JP7799786B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting device equipped with a normal-use lighting fixture and an emergency lighting fixture.

As an example of a lighting fixture that can be attached to a ceiling or wall, a lighting device with an integrated emergency light has been proposed, in which a normal lighting fixture and an emergency lighting fixture are installed in the same housing (see, for example, Patent Document 1). The lighting device in Patent Document 1 uses a storage battery, which is an emergency power source, as its power source to turn on the emergency lighting fixture in an emergency when the power supply from the commercial power source is stopped for some reason and the normal lighting fixture cannot be turned on.

Patent No. 6238162

The lighting device in Patent Document 1 has emergency lighting fixtures located at its longitudinal ends, and if regular lighting fixtures of the same dimensions as regular lighting fixtures are used, the overall length of the lighting device must be increased. Furthermore, if the overall length of the lighting device were to be the same as that of regular lighting fixtures, the length of the regular lighting fixtures would have to be shortened by at least the length of the emergency lighting fixtures. As such, with the previously disclosed technology, either the lighting device or the regular lighting fixtures must be designed and manufactured to accommodate length dimensions that differ from those of regular lighting devices and regular regular lighting fixtures, posing challenges in terms of cost and construction.

The present invention was made to solve the above-mentioned problems, and aims to provide a lighting device that has both normal-use lighting fixtures and emergency lighting fixtures, and that is equipped with emergency lighting fixtures that is economical and easy to install.

The lighting device of the present invention comprises a long, elongated first lighting fixture and a second lighting fixture arranged alongside the first lighting fixture in the short direction, the second lighting fixture having an emergency light source unit, a lens unit covering the emergency light source unit, and an outer casing that houses the emergency light source unit and the lens unit, the length of the second lighting fixture in the longitudinal direction of the first lighting fixture being shorter than the length of the first lighting fixture, the outer casing having a main outer casing portion in which a translucent portion through which the lens unit is exposed, an inner outer casing portion extending along the longitudinal direction, and an outer casing short side portion arranged opposite the lens unit in the longitudinal direction to separate the first lighting fixture and the lens unit, the inner outer casing portion being arranged between the first lighting fixture and the lens unit in the short direction in a cross section of the first lighting fixture and second lighting fixture perpendicular to the longitudinal direction and perpendicular to the direction in which the inner outer casing portion extends, separating the first lighting fixture and the lens unit .

In the lighting device of the present invention, when the first lighting fixture is attached to the lighting fixture, the outer casing is arranged on the lighting fixture so as to separate the second light-emitting unit from the first light-emitting unit. Therefore, the first lighting fixture and the second lighting fixture can be arranged side by side in the lighting fixture. By arranging the first lighting fixture and the second lighting fixture side by side in the lighting fixture, the first lighting fixture and the second lighting fixture can be arranged side by side in the short direction of the lighting device in a long lighting device. As a result, when designing and manufacturing the lighting device, it is not necessary to design and manufacture it according to length dimensions different from those of general lighting devices and general regular lighting fixtures, and a lighting device equipped with emergency lighting equipment that is economical and easy to install can be provided.

1 is a perspective view of a lighting device according to a first embodiment of the present invention, taken in a first direction; FIG. 2 is a perspective view of the lighting device according to the first embodiment of the present invention, viewed from a second direction. 1 is a front view of a lighting device according to a first embodiment of the present invention. FIG. 2 is a bottom view of the lighting device according to the first embodiment of the present invention. FIG. 2 is a rear view of the lighting device according to the first embodiment of the present invention. 1 is a top view of an illumination device according to a first embodiment of the present invention. 1 is a side view of a lighting device according to a first embodiment of the present invention. 1 is an exploded perspective view of a lighting device according to a first embodiment of the present invention. 5 is a cross-sectional view of the lighting device of FIG. 4 taken along line AA. FIG. 2 is a perspective view of the second lighting device of FIG. 1 in a third direction. FIG. 11 is an exploded perspective view of the second lighting device of FIG. 10 in a third direction. FIG. 11 is a perspective view of the second lighting device of FIG. 10 in a fourth direction. FIG. 13 is an exploded perspective view of the second lighting device of FIG. 12 in a fourth direction. FIG. 14 is an exploded perspective view of the second light source unit of FIG. 13 . FIG. 14 is a perspective view of the battery placed in the base of FIG. 13. 5 is a cross-sectional view of the lighting device of FIG. 4 taken along line BB. 16 is a schematic cross-sectional view showing the attachment and detachment of the battery in FIG. 15. 17 is a schematic cross-sectional view showing the attachment and detachment of the battery in FIG. 16. FIG. 2 is a perspective view of the lighting device of FIG. 1 with the outer casing of a second lighting fixture removed. FIG. 10 is a cross-sectional view taken along the line BB of a modified example of the lighting device according to the first embodiment of the present invention. FIG. 10 is a perspective view of a lighting device according to a second embodiment of the present invention, viewed from a first direction. FIG. 10 is a perspective view of the lighting device according to the second embodiment of the present invention, viewed from a second direction. FIG. 10 is a front view of a lighting device according to a second embodiment of the present invention. FIG. 10 is a bottom view of the lighting device according to the second embodiment of the present invention. FIG. 10 is a rear view of the lighting device according to the second embodiment of the present invention. FIG. 10 is a top view of an illumination device according to a second embodiment of the present invention. FIG. 10 is a side view of a lighting device according to a second embodiment of the present invention. FIG. 10 is a perspective view of a lighting device according to a third embodiment of the present invention, viewed from a first direction. FIG. 10 is a perspective view of the lighting device according to the third embodiment of the present invention, viewed from a second direction. FIG. 10 is a front view of a lighting device according to a third embodiment of the present invention. FIG. 10 is a bottom view of an illumination device according to a third embodiment of the present invention. FIG. 10 is a rear view of the lighting device according to the third embodiment of the present invention. FIG. 10 is a top view of an illumination device according to a third embodiment of the present invention. FIG. 10 is a side view of a lighting device according to a third embodiment of the present invention. FIG. 10 is a perspective view of a lighting device according to a fourth embodiment of the present invention, viewed from a first direction. FIG. 10 is a perspective view of the lighting device according to the fourth embodiment of the present invention, viewed from a second direction. FIG. 10 is a front view of a lighting device according to a fourth embodiment of the present invention. FIG. 10 is a bottom view of an illumination device according to a fourth embodiment of the present invention. FIG. 10 is a rear view of the lighting device according to the fourth embodiment of the present invention. FIG. 10 is a top view of an illumination device according to a fourth embodiment of the present invention. FIG. 10 is a side view of a lighting device according to a fourth embodiment of the present invention. FIG. 10 is a perspective view of a lighting device according to a fifth embodiment of the present invention, viewed from a first direction. FIG. 10 is a perspective view of the lighting device according to the fifth embodiment of the present invention, viewed from a second direction. FIG. 10 is a front view of a lighting device according to a fifth embodiment of the present invention. FIG. 10 is a bottom view of an illumination device according to a fifth embodiment of the present invention. FIG. 10 is a rear view of the lighting device according to the fifth embodiment of the present invention. FIG. 10 is a top view of an illumination device according to a fifth embodiment of the present invention. FIG. 10 is a side view of a lighting device according to a fifth embodiment of the present invention. 46 is a cross-sectional view of the lighting device of FIG. 45 taken along line EE. FIG. 43 is a perspective view of the second lighting device of FIG. 42 from a third direction. FIG. 43 is an exploded perspective view of the second lighting device of FIG. 42 in a third direction. FIG. 50 is a perspective view of the second lighting device of FIG. 49 from a fourth direction. FIG. 50 is an exploded perspective view of the second lighting device of FIG. 49 in a fourth direction. FIG. 52 is a detailed exploded perspective view of the second lighting fixture of FIG. 51 with the outer shell removed. FIG. 54 is a detailed exploded perspective view of the second lighting fixture of FIG. 53 with the outer shell removed. 46 is a cross-sectional view of the lighting device of FIG. 45 taken along line FF. 57 is a schematic cross-sectional view showing the attachment and detachment of the battery in FIG. 56.

A lighting device 1 according to an embodiment of the present invention will now be described with reference to the drawings. In each drawing, the same or corresponding components are designated by the same reference numerals, and repeated description may be omitted. The present invention is not limited to the embodiments described below. Furthermore, the sized relationships between components in the drawings may differ from the actual relationships. Furthermore, in the description of the embodiments, orientations or positions such as up, down, left, right, front, rear, front, and back may be indicated. These notations are provided for the convenience of explanation and do not limit the placement, direction, or orientation of devices, fixtures, or components.

Embodiment 1.
FIG. 1 is a perspective view from a first direction of the lighting device 1 according to the first embodiment of the present invention. FIG. 2 is a perspective view from a second direction of the lighting device 1 according to the first embodiment of the present invention. FIG. 3 is a front view of the lighting device 1 according to the first embodiment of the present invention. FIG. 4 is a bottom view of the lighting device 1 according to the first embodiment of the present invention. FIG. 5 is a rear view of the lighting device 1 according to the first embodiment of the present invention. FIG. 6 is a top view of the lighting device 1 according to the first embodiment of the present invention. FIG. 7 is a side view of the lighting device 1 according to the first embodiment of the present invention. FIG. 8 is an exploded perspective view of the lighting device 1 according to the first embodiment of the present invention. The configuration of the lighting device 1 according to the first embodiment will be described with reference to FIGS. 1 to 8.

In the following description, the direction along the longitudinal direction of the lighting device 1 is referred to as the longitudinal direction (X-axis direction). The direction perpendicular to the longitudinal direction (X-axis direction) and shorter than the longitudinal direction (X-axis direction) is referred to as the short-side direction (Y-axis direction). The direction perpendicular to both the longitudinal direction (X-axis direction) and the short-side direction (Y-axis direction) is referred to as the up-down direction (Z-axis direction). In the up-down direction (Z-axis direction), the direction toward the mounting surface 9, such as the ceiling or wall, on which the lighting device 1 is mounted is referred to as the upward direction Z1. The direction opposite to the upward direction Z1, toward the illuminated space onto which light is emitted from the lighting device 1, is referred to as the downward direction Z2. The upward direction Z1 is also the direction in which the first lighting fixture 20 is mounted to the lighting fixture 10, and the downward direction Z2 is the direction in which the first lighting fixture 20 is removed from the lighting fixture 10. The first direction in FIG. 1 is the direction in the short-side direction (Y-axis direction) of the lighting device 1, viewed from below on the side where the second lighting fixture 30 is not installed. Additionally, the second direction in FIG. 2 is the direction in the short-side direction (Y-axis direction) of the lighting device 1 when viewing the lighting device 1 from below, on the side where the second lighting fixture 30 is provided.

<Lighting device 1>
The lighting device 1 is installed at a position where it can illuminate the lighting space, and illuminates the lighting space. The lighting space refers to the space below where the lighting device 1 is installed, such as a residential space, a space such as a warehouse, a space such as a building or public facility, a shared space such as an elevator or a corridor, or a space inside a vehicle such as a train or a ship. In the first embodiment, the lighting device 1 is illustrated as a so-called V-shaped (150 mm wide) lighting device 1. Note that, although the lighting device 1 in the first embodiment is described using a so-called V-shaped lighting device as an example, the lighting device 1 is not limited to the V-shaped type lighting device 1. The lighting device 1 may be of other types, such as a so-called shaded type, a one-sided reflective shaded type, or a trough type.

The lighting device 1 includes an elongated lighting fixture 10 that is attached to a mounting portion 9 such as a ceiling or wall, an elongated first lighting fixture 20 that is detachably attached to the lighting fixture 10, and a second lighting fixture 30 that is attached to the lighting fixture 10. In the lighting device 1, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short-side direction (Y-axis direction). If a certain direction in a plane parallel to the mounting portion 9 is defined as the first direction and a direction perpendicular to the first direction as the second direction, as shown in Figures 3 to 7, the maximum dimensions of the second lighting fixture 30 are smaller than the maximum dimensions of the first lighting fixture 20 in both the first and second directions. The lighting fixture 10 is formed in an elongated shape, with the first direction being the longitudinal direction (X-axis direction) of the lighting fixture 10 and the second direction being the short-side direction (Y-axis direction) of the lighting fixture 10.

[Lighting fixture 10]
As shown in FIG. 8 , the lighting fixture 10 has a fixture body 11, a fixture end portion 12, a fixture-side connector 13, a fixture-side terminal block 14, a fixture-side fixing device 15, and a fixture-side power line 16.

(Apparatus main body 11)
The fixture body 11 is a housing that forms the outer shell of the lighting fixture 10. The fixture body 11 is attached to the mounting portion 9 using fasteners such as bolts. The fixture body 11 has a fixture bottom 110, fixture side portions 111, fixture inclined portions 114, and fixture side edge portions 117. The fixture bottom 110, fixture side portions 111, fixture inclined portions 114, and fixture side edge portions 117 are integrally formed, for example, by bending a metal plate. However, the fixture body 11 is not limited to being formed by bending a metal plate, and may be formed using other materials such as resin or ceramic, or by other methods such as extrusion molding or additive manufacturing. Furthermore, the fixture bottom 110, fixture side portions 111, fixture inclined portions 114, and fixture side edge portions 117 are not limited to being integrally formed, and may be formed separately as long as these components are securely fixed to each other.

The fixture bottom 110 is a plate-like member formed in a long, rectangular shape along the longitudinal direction (X-axis direction) of the fixture main body 11. The fixture side 111 is a pair of side walls rising from the sides at both ends of the fixture bottom 110 in the short direction (Y-axis direction), and is a plate-like member formed in a long, rectangular shape along the longitudinal direction (X-axis direction) of the fixture main body 11. As shown in FIG. 8, a screw hole 113 is formed in the fixture bottom 110. As shown in FIG. 6, a second lighting fixture fixing device 80 such as a screw or rivet is attached to the screw hole 113 to fix the second lighting fixture 30 to the fixture main body 11. As shown in FIG. 8, a wire passage hole 112 is formed in the fixture side 111. The wire passage hole 112 is a through-hole formed in the fixture side 111. A power line is inserted through the wire hole 112, which serves as a path for supplying power from the power supply unit 23, which is the lighting device for the first lighting fixture 20 (described below), to the second lighting fixture 30.

The fixture body 11 defines a recessed storage section 18 formed by the fixture bottom 110, the fixture side sections 111, and the end plate 120 of the fixture end section 12 (described below). The storage section 18 is the first space defined in the lighting fixture 10. The storage section 18 has a bottom surface defined by the fixture bottom 110, a side wall extending in the longitudinal direction defined by the fixture side sections 111, and a side wall extending in the lateral direction defined by the end plate 120. The first lighting fixture 20 is removably attached to this storage section 18, and a portion of the first lighting fixture 20 is housed therein. In other words, the first space is the storage space for the first lighting fixture 20.

The fixture inclined portions 114 are inclined walls provided in pairs on both sides of the storage portion 18 in the lateral direction (Y-axis direction) of the fixture main body 11. The fixture inclined portions 114 are formed so as to be inclined with respect to the mounting surface of the mounting portion 9. The pair of fixture inclined portions 114 are formed from each of the longitudinal sides of the fixture side edge 117, extending upward (toward the Z1 side) and away from the storage portion 18. In other words, the fixture inclined portions 114 are inclined so that the distance between their ends on the mounting portion 9 side in the vertical direction (Z-axis direction) of the fixture main body 11 is wider than the distance between their ends on the illumination space side. In the lighting device 1, the storage portion 18 is formed between the pair of fixture inclined portions 114 in the lateral direction (Y-axis direction). The fixture inclined portions 114 form an inclined surface and may reflect light emitted from the light source toward the illumination space.

The appliance side edges 117 are edges of the storage section 18 that are provided in pairs on both sides of the storage section 18 in the short direction (Y-axis direction) of the appliance main body 11. The appliance side edges 117 are formed between the appliance side section 111 and the appliance inclined section 114. The appliance side edges 117 are formed at the tip of the appliance side section 111 opposite the appliance bottom section 110, and are formed in pairs so as to be spaced apart from each tip of the pair of appliance side sections 111. The appliance side edges 117 form the underside of the appliance main body 11.

A fixture penetration portion 115, which is a through-hole, is formed in the fixture inclined portion 114 and the fixture side edge portion 117, which are formed on one side of the housing portion 18 in the lateral direction (Y-axis direction) of the fixture main body portion 11. The fixture penetration portion 115 is formed in the center of the fixture main body portion 11 in the longitudinal direction (X-axis direction). As shown in FIG. 4 , the fixture penetration portion 115 is rectangular in the fixture main body portion 11 in a plan view of the mounting portion 9 viewed from the lighting space side. A second lighting fixture 30 (described below) is inserted into this fixture penetration portion 115, and the second lighting fixture 30 is positioned in the fixture penetration portion 115 so as to protrude from the fixture inclined portion 114 and the fixture side edge portion 117 toward the lighting space side. Therefore, the fixture penetration portion 115 only needs to be formed to correspond to the shape and dimensions of the outer casing 42 of the second lighting fixture 30 (described below), and is not limited to a rectangular shape in a plan view of the mounting portion 9 viewed from the lighting space side. The instrument penetration portion 115 functions as an attachment/detachment opening for the outer shell portion 42.

(Instrument end 12)
The fixture end portions 12 are arranged at both longitudinal (X-axis) ends of the fixture main body 11. The fixture end portions 12 have end plates 120 that cover the longitudinal (X-axis) ends of the fixture main body 11. The end plates 120 form side walls of the fixture main body 11 that extend in the lateral direction (Y-axis) of the fixture main body 11. The end plates 120 of the fixture end portions 12 are arranged at the longitudinal (X-axis) ends of the fixture inclined portions 114 and the fixture side edge portions 117, and together with the fixture inclined portions 114 and the fixture side edge portions 117 of the fixture main body 11, form the outer shell of the lighting fixture 10.

The end plate 120 is formed with a knockout portion 121, which forms a through-hole in the end plate 120 by removing a portion of the wall that constitutes the end plate 120. The knockout portion 121 is a portion of the end plate 120 that has been knocked out, and can be easily drilled on-site by, for example, hammering or cutting. The knockout portion 121 is, for example, a plurality of continuous through-holes formed like perforations along the periphery of the wall to be cut out of the end plate 120. The knockout form is not limited to a plurality of continuous through-holes, and other forms of knockout may be used on the end plate 120. Furthermore, while the knockout portion 121 is formed to be removable from the end plate 120 by knockout processing, the knockout portion 121 may also be formed to be removable from the end plate 120 by means of engagement with a claw or adhesive other than knockout processing. For example, an electrical wire for feed wiring may be inserted through the through-hole formed by the knockout portion 121.

(Appliance-side connector 13 and appliance-side fixture 15)
The fixture-side connector 13 constitutes a connecting mechanism for detachably connecting the first lighting fixture 20 to the lighting fixture 10. The fixture-side connector 13 holds the first lighting fixture 20 when the first lighting fixture 20 is attached to the lighting fixture 10. The fixture-side connector 13 is a leaf spring formed of an elastic material such as stainless steel or spring steel. The fixture-side connector 13 may be formed by bending an elastic plate material or an elastic wire material. The fixture-side connector 13 engages with a lighting-side connector (not shown) of the first lighting fixture 20. As shown in FIG. 8 , two fixture-side connectors 13 are attached to the fixture bottom 110 and are arranged along the longitudinal direction (X-axis direction) of the fixture bottom 110 that constitutes the storage section 18. The fixture-side connectors 13 are arranged on the end side of the fixture bottom 110 relative to the center in the longitudinal direction (X-axis direction) of the fixture bottom 110. The pair of tool-side connectors 13 are arranged on the tool bottom 110 so that the tips of the springs face in opposite directions. The tool-side fixing device 15 is a member, such as a screw, for fixing the tool-side connector 13 to the tool body 11.

(Appliance side terminal block 14)
The fixture-side terminal block 14 is connected to an external power source (not shown) drawn into the fixture body 11 from the outside, and supplies power from a commercial power source to the first lighting fixture 20. The fixture-side terminal block 14 is attached to and fixed to the fixture bottom 110 of the fixture body 11. An external electric wire (not shown) for receiving power from the external power source is connected to the fixture-side terminal block 14. In addition, a fixture-side power line 16 for supplying power to a power supply unit 23 of the first lighting fixture 20 (described later) is connected to the fixture-side terminal block 14.

(Apparatus side power line 16)
The fixture-side power line 16 has an electric wire portion 160 that connects the fixture main body 11 and the first lighting fixture 20. One end of the electric wire portion 160 of the fixture-side power line 16 is connected to the fixture-side terminal block 14, and the other end is provided with a connector 161 for connection to a power supply-side power line (not shown) of the first lighting fixture 20.

[First lighting device 20]
FIG. 9 is a cross-sectional view of the lighting device 1 of FIG. 4 taken along line A-A. The configuration of each part of the first lighting device 20 will be described with reference to FIGS. 1, 4, 8, and 9. The first lighting device 20 is a lighting device for regular use, and under normal circumstances, power is supplied to the first light source unit 21, which serves as a light source, from outside the lighting device 1 via the fixture-side terminal block 14. Note that "normal circumstances" refers to a state in which power is supplied to the lighting device 1 from an external source such as a commercial power source. Furthermore, an "emergency" refers to a state in which power is not supplied to the lighting device 1 from outside the lighting device 1 for some reason, such as a power outage. Under normal circumstances, when the lighting device 1 is turned on, the lighting device 1 emits light from the first lighting device 20 to illuminate the illumination space.

As shown in FIG. 4, the first lighting fixture 20 is attached to the lighting fixture 10 to form the lighting device 1. The first lighting fixture 20 is formed in an elongated shape and is used by being attached to the fixture body 11 of the lighting fixture 10. A portion of the first lighting fixture 20 is housed in the housing 18 of the fixture body 11, and the first lighting fixture 20 is detachably attached to the fixture body 11. As shown in FIG. 9, the first lighting fixture 20 has a first light source unit 21, a first light-transmitting unit 22, a power supply unit 23, and a support unit 24. The first lighting fixture 20 also has a lighting fixture-side connecting unit (not shown) that engages with the fixture-side connecting unit 13. This lighting fixture-side connecting unit, together with the fixture-side connecting unit 13, forms a connecting mechanism for detachably connecting the first lighting fixture 20 to the fixture body 11.

(First light source section 21)
The first light source unit 21 is a light source that emits light. The first light source unit 21 is lit by a first lighting power supplied from a first lighting device. The first lighting device is a power supply unit 23, which will be described later. The first light source unit 21 is disposed in a space surrounded by the first light-transmitting unit 22 and the support unit 24 when the first light-transmitting unit 22 is attached to the support unit 24. The first light source unit 21 is formed long and, as shown in FIG. 9 , includes a first light source element 211 and a first light source substrate 210 on which the first light source element 211 is mounted. In addition, an electric wire (not shown) is connected to one end of the first light source unit 21 in the longitudinal direction (X-axis direction) for electrically connecting the first light source unit 21 to the power supply unit 23, which will be described later.

The first light source element 211 emits light upon receiving a supply of power. In this embodiment, a light-emitting diode (LED) element is used as the first light source element 211. The multiple first light source elements 211 are arranged in a row along the longitudinal direction (X-axis direction) on the mounting surface of the first light source substrate 210. Note that the arrangement of the first light source elements 211 on the first light source substrate 210 is not limited to a row, and may be, for example, arranged in multiple rows or in a staggered pattern. Furthermore, instead of an LED, the first light source element 211 may be, for example, a solid-state laser, a semiconductor laser, an organic electroluminescence (EL), or an inorganic EL. The first light source substrate 210 is an elongated, plate-like member extending in the longitudinal direction (X-axis direction) of the first illuminator 20. The first light source substrate 210 may be made of, for example, a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenolic substrate (XPC), or a metal-based substrate.

(First transparent part 22)
The first light-transmitting portion 22 receives light emitted by the first light source unit 21 and transmits the light for irradiation. The first light-transmitting portion 22 is made of a light-transmitting material that transmits at least visible light. The material of the first light-transmitting portion 22 may be, for example, a milky white resin material or a resin material mixed with a diffusing material. The first light-transmitting portion 22 may be made of, for example, a resin material such as polycarbonate or acrylic. The first light-transmitting portion 22 is formed long so as to cover the first light source unit 21 and is attached to a side end of the support unit 24 (described later). The first light-transmitting portion 22 has a main portion 220, an attachment portion 221, and a lid portion 226.

The main portion 220 is the first light-emitting portion, covers the first light source portion 21, and transmits light emitted from the first light source portion 21. The main portion 220 is part of the first translucent portion 22, and covers and faces the first light source portion 21 when the first translucent portion 22 is attached to the support portion 24. Therefore, the main portion 220 is the portion of the first translucent portion 22 where light emitted by the first light source portion 21 enters and transmits the light for irradiation. Light emitted from the first light source portion 21 enters through the first incident portion 222, which constitutes the inner surface of the first translucent portion 22, and is emitted to the outside from the first exit portion 223, which constitutes the outer surface of the first translucent portion 22. In a cross section perpendicular to the longitudinal direction (X-axis direction), the main portion 220 has an arc-shaped lower end as shown in FIG. 9 . The cross section of the main portion 220 perpendicular to the longitudinal direction (X-axis direction) is not limited to the shape shown in FIG. 9 in which the lower end is formed in an arc shape, and the cross section of the main portion 220 may have other shapes. For example, the cross section of the main portion 220 perpendicular to the longitudinal direction (X-axis direction) may have straight or curved portions, or may have both straight and curved portions. The surface of the main portion 220 may be a planar shape formed from one plane or a polyhedral shape formed from multiple planes, or may have a shape formed from one or multiple curved surfaces.

The mounting portion 221 is a portion of the first translucent portion 22 that engages with the support portion 24. The mounting portion 221 is provided on the end side of the first translucent portion 22 relative to the center in the short-side direction (Y-axis direction). The mounting portions 221 are provided in pairs in the short-side direction (Y-axis direction) of the first translucent portion 22. The mounting portions 221 are formed to protrude upward from the main portion 220, and are formed to extend in the up-down direction (Z-axis direction) when the first lighting device 20 is attached to the lighting fixture 10. One end of the mounting portion 221 is continuous with the main portion 220 in the up-down direction (Z-axis direction), and the other end of the mounting portion 221 is bent in a hook shape toward the center in the short-side direction (Y-axis direction). A hook-shaped portion formed on the end of this mounting portion 221 hooks onto the standing portion 241, thereby engaging and attaching the first light transmitting portion 22 to the support portion 24. Note that the mounting portion 221 may have any other shape as long as it is structured to engage with the standing portion 241. Furthermore, the mounting portions 221 may be formed continuously along the longitudinal direction (X-axis direction) of the first light transmitting portion 22, or may be formed at intervals along the longitudinal direction (X-axis direction) of the first light transmitting portion 22.

The lid portion 226 is disposed at the end of the first translucent portion 22 in the longitudinal direction (X-axis direction), covers the opening formed at the end of the first translucent portion 22 in the longitudinal direction (X-axis direction), and distributes the light emitted by the first light source portion 21 in the longitudinal direction (X-axis direction). The lid portion 226 is formed of a transparent and diffusive material such as acrylic resin, and is joined to the main portion 220 by a joining method such as adhesive or thermal welding. Note that in Embodiment 1, the lid portion 226 is configured separately from the main portion 220 and the mounting portion 221, but the lid portion 226 may be formed integrally with the main portion 220 and the mounting portion 221. Note that the lid portion 226 is not limited to distributing the light emitted by the first light source portion 21 in the longitudinal direction (X-axis direction), and may also block the light emitted by the first light source portion 21.

(Power supply section 23)
The power supply unit 23 supplies power, which is externally supplied via the fixture-side terminal block 14, to the first light source unit 21 to light the first light source element 211. The power supply unit 23 is a first lighting device of the lighting device 1. As shown in FIG. 9 , the power supply unit 23 is fixed to the surface of the support unit 24 opposite to the surface to which the first light source unit 21 is attached by a power-supply-side fastener (not shown). The power-supply-side fastener is, for example, a screw, a screw and nut, or a rivet. The power supply unit 23 includes a substantially rectangular parallelepiped case 230, a power supply board housed inside the case 230, and power supply circuit components (not shown) mounted on the power supply board. The power supply unit 23 also includes a power-supply-side power line (not shown) connected to the first light source unit 21.

(Support part 24)
The support portion 24 is a member on which a lighting-device-side connector (not shown) for attaching the first lighting device 20 to the lighting fixture 10 is provided, and is also a member on which the first light source unit 21, the first light-transmitting unit 22, and the power supply unit 23 are attached. As shown in FIG. 9 , the support portion 24 has a base portion 240 formed in the shape of a long, rectangular plate along the longitudinal direction (X-axis direction) and upright portions 241 rising from both ends of the base portion 240 in the lateral direction (Y-axis direction). The support portion 24 also has a power supply unit placement portion 242 formed in the shape of a plate that protrudes from the base portion 240 on the side on which the upright portions 241 rise. The support portion 24 is formed of a reflective material, but a reflective paint may be used, or a reflective material may be disposed on a substrate.

As described above, the base 240 is formed in the shape of a long plate, with the power supply unit 23 and lighting fixture-side connector (not shown) disposed on one side of the plate, and the first light source unit 21 attached to the wall on the other side of the plate. The standing portion 241 is formed to extend upward (in the Z1 direction) from the base 240 when the first lighting fixture 20 is attached to the lighting fixture 10. The standing portion 241 is also formed along the longitudinal direction (X-axis direction) of the base 240. One end of the standing portion 241 is continuous with the base 240 in the up-down direction (Z-axis direction), and the other end of the standing portion 241 has rounded edges and is bent in an arc toward the center in the short direction (Y-axis direction). The mounting portion 221 of the first light-transmitting portion 22 hooks onto the end of this standing portion 241, thereby engaging and attaching the first light-transmitting portion 22 to the support portion 24. The power supply unit placement portion 242 is a plate-shaped portion located above (on the Z1 side of) the base 240 when the first lighting device 20 is attached to the lighting fixture 10. In other words, the base 240 and an imaginary extension plane of the power supply unit placement portion 242 are parallel. The power supply unit placement portion 242 is formed in the center of the base 240 in the short direction (Y-axis direction) of the base 240. The power supply unit 23 is placed in the power supply unit placement portion 242.

[Second lighting device 30]
An overview of the second lighting device 30 will be described with reference to Figures 1 to 9. The second lighting device 30 is an emergency lighting device that emits light to illuminate the lighting space in an emergency when power is not supplied to the lighting device 1 from outside the lighting device 1 for some reason, such as a power outage.

The second lighting fixture 30 is attached to the lighting fixture 10 and, together with the first lighting fixture 20, constitutes the lighting device 1. The second lighting fixture 30 is located outside the storage section 18 in the short-side direction (Y-axis direction) of the lighting fixture 10. The second lighting fixture 30 is formed in an elongated shape and is attached along the longitudinal direction (X-axis direction) of the lighting fixture 10. The second lighting fixture 30 is also located in the center of the lighting fixture 10 in the long-side direction (X-axis direction). The second lighting fixture 30 is located alongside the first lighting fixture 20 in the short-side direction (Y-axis direction) of the lighting fixture 10. The second lighting fixture 30 is located within the lighting fixture 10 so that the long-side direction of the first lighting fixture 20 and the long-side direction of the second lighting fixture 30 are parallel to each other in a plan view of the mounting portion 9 viewed from the lighting space side. The second lighting fixture 30 is located so as to protrude from the fixture penetration portion 115 formed in the fixture inclined portion 114.

Figure 10 is a perspective view of the second lighting fixture 30 of Figure 1 in a third direction. Figure 11 is an exploded perspective view of the second lighting fixture 30 of Figure 10 in a third direction. Figure 12 is a perspective view of the second lighting fixture 30 of Figure 10 in a fourth direction. Figure 13 is an exploded perspective view of the second lighting fixture 30 of Figure 12 in a fourth direction. Figure 14 is an exploded perspective view of the second light source unit 31 of Figure 13. The configuration of the second lighting fixture 30 will be described in more detail using Figures 9 to 14. Note that the third direction in Figures 10 and 11 is a perspective view of the second lighting fixture 30 when viewing the lighting device 1 from the outside to the inside of the lighting device 1 in the short direction (Y-axis direction) of the lighting device 1, and from the lighting space side toward the mounting portion 9 side. Furthermore, the fourth direction in Figures 12 and 13 is a perspective view of the second lighting fixture 30 when viewing the lighting device 1 from the inside to the outside of the lighting device 1 in the short direction (Y-axis direction) of the lighting device 1, and from the lighting space side toward the mounting portion 9 side. 10 to 14, the vertical direction (Z-axis direction) on the paper illustrating the second lighting device 30 is shown opposite to the vertical direction (Z-axis direction) on the paper of the lighting device 1 in FIG. 1. Also, FIGS. 11 and 13 show the second lighting device 30 with the battery 70 removed. As shown in FIGS. 13 to 15, the second lighting device 30 has a second light source unit 31, a control unit 34, an operation unit 36, an insulating unit 38, a housing unit 40, a holding member 50, a battery 70, a second lighting device fixing device 80, and a hanging cord 60.

(Second light source section 31)
The second light source unit 31 is an emergency light source that emits light. The second light source unit 31 is turned on by second lighting power supplied from a second lighting device. The second lighting device is the control unit 34, which will be described later. As shown in FIGS. 10 and 12 , the second light source unit 31 is housed within the housing unit 40 with some components, such as the second translucent unit 312, exposed from the housing unit 40. When the outer casing 42 is attached to the base unit 44, the second light source unit 31 is disposed between the base unit 44 and the outer casing 42. As shown in FIG. 14 , the second light source unit 31 includes a second light source substrate 310, a second light-emitting element 311, a second translucent unit 312, a holding unit 317, and a second light source unit fixing device 327.

The second light source substrate 310 is a plate-shaped member on which the second light emitting element 311 is mounted. The second light source substrate 310 may be made of, for example, a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenolic substrate (XPC), or a metal-based substrate.

The second light-emitting element 311 emits light upon receiving a supply of power. In this embodiment, a light-emitting diode (LED) element is used as the second light-emitting element 311. The second light-emitting elements 311 are arranged in pairs along the longitudinal direction (X-axis direction) on the mounting surface of the second light source substrate 310. The number of second light-emitting elements 311 is not limited to two, and may be one, three, or more. The arrangement of the second light-emitting elements 311 on the second light source substrate 310 is not limited to being arranged in the longitudinal direction (X-axis direction). For example, they may be arranged in the lateral direction (Y-axis direction) or at an angle to the longitudinal or lateral direction. Instead of an LED, the second light-emitting element 311 may be, for example, a solid-state laser, a semiconductor laser, an organic electroluminescence (EL), or an inorganic EL.

The second light-transmitting portion 312 receives the light emitted by the second light-emitting element 311 and transmits it for illumination. It is made of a translucent material that transmits at least visible light. The second light-transmitting portion 312 can be made of, for example, a resin material or a glass material. The second light-transmitting portion 312 is formed in an oval shape. The second light-transmitting portion 312 has two lens portions 313 and an attachment portion 316 that forms the edge of the second light-transmitting portion 312.

The lens portion 313 is the second light-emitting portion, which covers the second light source portion 31 and transmits light emitted from the second light source portion 31. The lens portion 313 also controls the light distribution of the light emitted from the second light-emitting element 311. When the second light-transmitting portion 312 is attached to the holder 317, the lens portion 313 covers the second light-emitting element 311, as shown in FIG. 9. Here, the dotted line Lt1 shown in FIG. 9 is a line comparing the position of the tip of the lens portion 313 on the irradiation side with the position of the tip of the main portion 220 of the first light-transmitting portion 22 that constitutes the first lighting fixture 20 on the irradiation side. Furthermore, the dotted line Lt2 is a line comparing the attachment position of the lens portion 313 with the attachment position of the main portion 220 of the first light-transmitting portion 22 that constitutes the first lighting fixture 20. As can be seen from the dotted line Lt2, the installation position of the lens portion 313 in the lighting device 1 is closer to the illumination space than the installation position of the main portion 220 of the first lighting fixture 20. That is, the lens portion 313 is located higher than the main portion 220, relative to the installation surface of the mounting portion 9. Furthermore, as can be seen from the dotted line Lt1, the distance between the tip of the light-emitting side of the lens portion 313 and the installation surface of the mounting portion 9 is approximately equal to the distance between the tip of the light-emitting side of the main portion 220 of the first lighting fixture 20 and the installation surface of the mounting portion 9. Note that the lighting device 1 is not limited to the positional relationship between the lens portion 313 and the main portion 220 as long as a partition wall is provided between the main portion 220 of the first lighting fixture 20 and the lens portion 313 of the second lighting fixture 30. The second incident portion 314, which constitutes the inner surface of the lens portion 313, faces the second light-emitting element 311, as shown in FIG. 9 . Light emitted from the second light-emitting element 311 enters the second incident portion 314 of the lens portion 313 and is emitted to the outside from the second exit portion 315 that forms the outer surface of the lens portion 313. Therefore, the second exit portion 315 of the lens portion 313 serves as the light-emitting portion of the second light source portion 31. As shown in FIG. 14 , the attachment portion 316 is a flange formed around the periphery of the lens portion 313. When the second light-transmitting portion 312 is attached to the holding portion 317, the attachment portion 316 is guided by the attachment guide 321 of the holding portion 317 and engages with the holding protrusion 320 of the holding portion 317.

The holding portion 317 is used to secure the second light source substrate 310 and the lens portion 313 to the base portion 44 (described below). The holding portion 317 has a main holding portion 318, a secondary holding portion 324, and a connection portion 326.

The main holder 318 is formed in a plate shape and serves as a base on which the second light-transmitting portion 312, which functions as a lens, is attached. The main holder 318 has a holding protrusion 320 that engages the attached second light-transmitting portion 312. The holding protrusion 320 is provided on a side wall 318a that rises from the main holder 318 and is a protrusion that extends inward from the side wall 318a. The holding protrusion 320, together with the main holder 318, holds the second light-transmitting portion 312 by sandwiching it from above and below (in the Z-axis direction). The second light-transmitting portion 312 is positioned in the lens holder 319 of the main holder 318 by the holding protrusion 320. The holder 317 forms an attachment guide 321 between the lens holder 319 and the holding protrusion 320. The attachment guide 321 is a groove formed between the lens holder 319 and the holding protrusion 320. The mounting guide 321 fits into the mounting portion 316 of the second light transmitting portion 312 when the second light transmitting portion 312 is attached to the holding portion 317, and guides the sliding of the attached second light transmitting portion 312. A through hole 322 is formed in the main holding portion 318. The through hole 322 is formed to be located above the mounting range of the second light emitting element 311. When the second light transmitting portion 312 is attached to the main holding portion 318, the lens portion 313 and the second light emitting element 311 face each other via the through hole 322. Therefore, light emitted from the second light emitting element 311 reaches the lens portion 313 via the through hole 322. The main holding portion 318 is further formed with main portion screw holes 323. The main portion screw holes 323 are formed in two locations on the main holding portion 318, with the lens holding portion 319 in between. The main screw hole 323 is a hole through which a second light source unit fixing device 327 for fixing the second light source unit 31 to the base unit 44 is inserted. Of the two main screw holes 323 formed, one main screw hole 323 overlaps with and communicates with a secondary screw hole 325 formed in the secondary holding portion 324.

The secondary holding portion 324 is a plate-shaped member that engages the second light-transmitting portion 312 arranged in the lens holding portion 319 to prevent it from slipping out of the mounting guide 321. The secondary holding portion 324 also secures the second light-transmitting portion 312 to prevent it from rattling within the mounting guide 321. A secondary screw hole 325 is formed in the secondary holding portion 324. The secondary screw hole 325 is a hole through which a second light source unit fixing device 327 is inserted to secure the second light source unit 31 to the base unit 44. The secondary screw hole 325 overlaps with the main screw hole 323 formed in the main holding portion 318 and is connected to the main screw hole 323.

The connecting portion 326 is the portion that connects the main holding portion 318 and the secondary holding portion 324. In embodiment 1, the connecting portion 326 connects the main holding portion 318 and the secondary holding portion 324 and is configured as a single component.

The second light source unit fixing device 327 is a member that fixes the second light source unit 31 to the base unit 44. The second light source unit fixing device 327 is, for example, a screw, a rivet, or the like. The second light source unit fixing device 327 is inserted into the main unit screw hole 323 formed in the main holding part 318 and the secondary unit screw hole 325 formed in the secondary holding part 324.

(Control unit 34)
Next, the control unit 34 will be described with reference to Fig. 13. The control unit 34 turns on the second light source unit 31 and controls the lighting of the second light source unit 31. The control unit 34 is a second lighting device of the lighting device 1. The control unit 34 also performs an inspection operation of the second light source unit 31 and controls the inspection operation of the second light source unit 31. The control unit 34 also has a battery 70 (described later), stores electricity in the battery 70, and controls the storage of electricity in the battery 70. For example, the control unit 34 controls switching between storing electricity in the battery 70 and discharging the battery 70.

The control unit 34 has a control board 340 and control circuit components 341, and constitutes a storage circuit, a discharge circuit, a control circuit, etc. The control board 340 is a plate-shaped member on which the control circuit components 341 are mounted. The control circuit components 341 include, for example, a storage device that stores programs, a CPU (Central Processing Unit) that executes the programs, etc.

The control unit 34 also has a case 342 and a control unit fixing device 346. The case 342 is box-shaped and houses the control board 340 inside. The case 342 has a first case 343 and a second case 345. The first case 343 is a so-called bottom case, and is a container to which the control board 340 is attached. The first case 343 has a plate-shaped case bottom wall 343a and a pair of case side walls 343b that rise up from the case bottom wall 343a and face each other. A screw hole 344 is formed in the case bottom wall 343a of the first case 343. This screw hole 344 is a hole through which a control unit fixing device 346 is inserted to fix the control unit 34 to the pedestal 44 and base 41. The second case 345 is a so-called upper case, and is a lid that covers the top of the first case 343. That is, the second case 345 covers the upper part of the control board 340 attached to the first case 343 in the control unit 34. The control unit fixing device 346 fixes the control unit 34 to the pedestal 44 and the base 41. The control unit fixing device 346 is, for example, a screw, nut, rivet, etc.

(Operation unit 36)
Next, the operation unit 36 will be described with reference to FIG. 13 . The operation unit 36 is used for inspecting the lighting device 1. The operation unit 36 has an operation surface 360 and an operation unit fixture 363. The operation surface 360 has operation buttons 361 operated by an operator and an indicator light 362. The indicator light 362 displays the power supply state, for example, as a so-called indicator. The operation unit fixture 363 fixes the operation unit 36 to the base 44. The operation unit fixture 363 is, for example, a screw, a nut, a rivet, or the like.

(Insulating portion 38)
Next, the insulating portion 38 will be described with reference to FIG. 14 . The insulating portion 38 is a plate-shaped member and an insulating sheet. The insulating portion 38 is disposed within the second lighting device 30 between the second light source substrate 310 of the second light source unit 31 and a second light source unit mounting portion 440 of the base unit 44 (described later). The insulating portion 38 electrically insulates the second light source substrate 310 of the second light source unit 31 from the second light source unit mounting portion 440 of the base unit 44. The insulating portion 38 has insulating portion screw holes 380 formed therein. The insulating portion screw holes 380 are formed in two locations. The insulating portion screw holes 380 are holes through which second light source unit fixing devices 327 for fixing the second light source unit 31 to the base unit 44 are inserted. By fixing the main holder 318 of the second light source unit 31 to the second light source unit mounting portion 440 of the base 44 , the insulating portion 38 is also fixed to the second light source unit mounting portion 440 of the base 44 .

(Housing unit 40)
Next, the housing 40 of the second lighting device 30 will be described with reference to Figures 9 to 14. The housing 40 forms the outer shell of the second lighting device 30. As shown in Figures 10 and 11, the housing 40 is formed in a box shape by an outer shell 42 and a base 41, and as shown in Figure 9, a second space 45 is formed inside the housing 40. The second space 45 formed by the housing 40 accommodates the second light source 31, the control unit 34, the operation unit 36, and the insulating unit 38. The housing 40 also forms the second space 45 that accommodates the second light source 31 and the control unit 34, together with a lens 313 that covers the second light source 31 and transmits light emitted from the second light source 31. 10 and 12, the second lighting device 30 is covered by a housing 40 that houses the entire optical system, including the second light source 31, and the lens 313 and the outer casing fixture 432 are exposed, but neither protrudes beyond the outer surface 420a of the housing 40. Therefore, the housing 40 serves as a partition between the first lighting device 20, which is a normal light source, and the second lighting device 30, which is an emergency light source. As shown in FIG. 13, the housing 40 has a base 41 fixed to the lighting device 10, a pedestal 44 fixed to the base 41, and an outer casing 42 that is detachably attached to the pedestal 44.

The base 41 serves as a base for accommodating the second light source unit 31. The base 41 has a base bottom 410, base side portions 414, and a base extension 415. The base bottom 410 is a member formed in the shape of a rectangular plate. A pedestal 44 and a holding member 50 (described below) are attached to the base bottom 410. The base bottom 410 is formed with a holding member fixing portion 411, as shown in Figures 11 and 13, and with a screw hole 412 and a mounting hole 413, as shown in Figure 6.

The holding member fixing portion 411 is a bridge-shaped cut-and-raised portion. In other words, the holding member fixing portion 411 is a plate material cut and raised from the base bottom portion 410, with both ends formed continuous with the base bottom portion 410. The fixing portion 51 of the holding member 50 is inserted into the holding member fixing portion 411. The screw holes 412 are holes through which mounting fixtures such as screws can be inserted to attach the control unit 34 and pedestal portion 44 to the base bottom portion 410. The mounting holes 413 are holes through which holding member fixing fixtures 54 can be inserted to secure the holding member 50 to the base bottom portion 410.

The base side portions 414 guide the movement of the outer shell portion 42 when the outer shell portion 42 is attached to the base 41. The base side portions 414 are side walls that rise from the edges of the base bottom portion 410. The base side portions 414 are arranged along the longitudinal direction (X-axis direction) of the elongated base bottom portion 410, and are arranged so as to be positioned at both ends of the base bottom portion 410 in the longitudinal direction (X-axis direction). In other words, the base side portions 414 are formed so as to be positioned on three adjacent sides of the rectangular base bottom portion 410.

The base extension 415 is an attachment portion for attaching the second lighting fixture 30 to the fixture bottom 110 of the lighting fixture 10. The base extension 415 is a plate member that is continuous with and integrally formed with the base bottom 410, and extends from the base bottom 410. The base extension 415 is provided on one side of the base bottom 410 where the base side 414 is not provided. As shown in FIG. 13 , the base extension 415 extends to the opposite side of the base side 414 that is provided along the longitudinal direction (X-axis direction) of the base bottom 410, via the pedestal 44. When the second lighting fixture 30 is placed in the lighting fixture 10, the base extension 415 faces and abuts against the fixture bottom 110. A screw hole 416 is formed in the base extension 415. The screw hole 416 is a hole through which the second lighting fixture fixing device 80 (described below) is inserted to secure the second lighting fixture 30 to the fixture bottom 110 of the lighting fixture 10.

The outer casing 42 forms the outer casing of the second lighting fixture 30 and constitutes the exterior design part of the second lighting fixture 30. The outer casing 42 is formed using a light-blocking material. The outer casing 42 is also formed using a flame-retardant or non-flammable material. The outer casing 42 is also formed using a thermally conductive material. As shown in Figures 11 and 13, the outer casing 42 is formed in the shape of a rectangular prism-like box with an opening 42a on one side. The outer casing 42 is detachably attached to the base 41 of the second lighting fixture 30. More specifically, the outer casing 42 is attached to the pedestal 44 so as to cover the base 41. By attaching the outer casing 42 to the pedestal 44, the outer casing 42 is attached to the base 41 via the pedestal 44. By attaching the outer shell 42 to the base 44, the outer shell 42 covers and accommodates the second light source 31 excluding the exposed portion, the control unit 34, the operation unit 36 excluding the exposed portion, and the insulating unit 38. That is, the outer shell 42 accommodates the second light source 31 and the lens unit 313 inside while leaving the lens unit 313, which is the second light emitter, exposed. The outer shell 42 forms a second space 45 in which the second light source 31 is accommodated together with the lens unit 313, which is the second light emitter. Furthermore, by attaching the outer shell 42 to the base 44, the outer shell 42 covers and accommodates the base 41 excluding the base protrusion 415, the base 44, the battery 70, and the holding member 50 inside. The outer shell 42 has an outer shell main portion 420, outer shell long side portions 427, outer shell short side portions 431, and outer shell fasteners 432.

The outer casing main portion 420 is a wall located on the surface opposite the opening 42a formed in the outer casing 42. The outer casing main portion 420 is a rectangular, elongated, plate-like wall. The outer casing main portion 420 faces the base bottom portion 410 when the outer casing 42 is attached to the base portion 44. The outer casing main portion 420 forms part of the underside of the lighting device 1 when the second illuminator 30 is attached to the lighting fixture 10. The outer casing main portion 420 has a second translucent member arrangement portion 421 and an operation unit arrangement portion 425.

The second translucent member arrangement portion 421 is a portion of the main outer casing portion 420 that faces the second translucent portion 312 arranged inside the housing portion 40. In other words, in the second lighting device 30, the second translucent portion 312 is arranged below the second translucent member arrangement portion 421. The second translucent member arrangement portion 421 has a step portion 422.

The step portion 422 is a flat wall portion formed so that the wall of the outer casing main portion 420 is recessed inward. Therefore, as shown in FIG. 9, the outer casing 42 is recessed inward at the step portion 422. As shown in FIGS. 11 and 13, a step is formed between the step portion 422 and the outer surface 420a of the outer casing main portion 420. The step portion 422 has a light-transmitting portion through-hole 423 and a screw hole 424. The light-transmitting portion through-hole 423 is a through-hole formed in the step portion 422. When the outer casing 42 is attached to the base portion 44, the light-transmitting portion through-hole 423 is formed in a position facing the lens portion 313, which is the second light-emitting portion. Therefore, when the outer shell 42 is attached to the base 44, as shown in FIGS. 9 and 10 , the lens portion 313 of the second light-transmitting portion 312 arranged inside the housing 40 is exposed to the outside from the step portion 422 via the light-transmitting portion through-hole 423. Also, when the outer shell 42 is attached to the base 44, as shown in FIGS. 9 and 10 , the lens portion 313 of the second light-transmitting portion 312 arranged inside the housing 40 partially protrudes to the outside from the step portion 422 via the light-transmitting portion through-hole 423. Screw holes 424 are formed in two locations on the step portion 422, with the light-transmitting portion through-hole 423 in between. The screw holes 424 are holes through which outer shell fixing devices 432 are inserted to fix the outer shell 42 to the base 44.

The operation unit placement section 425 is the portion of the outer casing main section 420 that faces the operation unit 36 arranged inside the housing section 40. That is, in the second lighting device 30, the operation unit 36 is arranged below the operation unit placement section 425. An operation through-hole 426 is formed in the operation unit placement section 425. The operation through-hole 426 is a through-hole formed in the operation unit placement section 425. When the outer casing 42 is attached to the base section 44, as shown in FIGS. 10 and 12 , the operation surface section 360 of the operation unit 36 arranged inside the housing section 40 is exposed from the wall surface of the operation unit placement section 425 through the operation through-hole 426. By exposing the operation surface section 360 on the underside of the lighting device 1, the operator can operate the operation button 361 of the operation unit 36 and can recognize when the indicator light 362 is on or off.

As shown in Figures 11 to 13, the outer shell longitudinal side portions 427 form the side walls of the outer shell portion 42. The outer shell longitudinal side portions 427 are formed to rise from the side edges of the outer shell main portion 420 along the longitudinal direction (X-axis direction) of the outer shell main portion 420. The outer shell longitudinal side portions 427 have an outer shell outer portion 428 and an outer shell inner portion 429. The outer shell outer portion 428 and the outer shell inner portion 429 are formed to face each other. When the outer shell portion 42 is attached to the base portion 44, the outer shell outer portion 428 faces the base side portion 414, which is formed to extend in the longitudinal direction (X-axis direction). When the outer shell 42 is attached to the base portion 44, the outer shell inner portion 429 is positioned on the projecting side of the base projecting portion 415. As shown in FIG. 9 , when the second lighting fixture 30 is attached to the lighting fixture 10, the outer casing portion 428 forms the outer sidewall of the lighting device 1 and the second lighting fixture 30 in the short-side direction (Y-axis direction). Furthermore, in the short-side direction (Y-axis direction) of the lighting device 1, the inner casing portion 429 forms the inner sidewall of the second lighting fixture 30 relative to the outer casing portion 428.

When the second lighting fixture 30 is attached to the lighting fixture 10, the inner casing portion 429 is positioned along and abuts against the fixture side portion 111 of the lighting fixture 10. When the second lighting fixture 30 is attached to the lighting fixture 10, the inner casing portion 429 functions as a partition wall separating the storage portion 18 of the lighting fixture 10 from the components of the second lighting fixture 30, as shown in FIG. 9 . That is, when the first lighting fixture 20 is attached to the lighting fixture 10, the outer casing portion 42 is positioned on the lighting fixture 10 so as to separate the lens portion 313, which is the second light-emitting portion, from the main portion 220, which is the first light-emitting portion. The storage portion 18, which is the first space, and the second space 45 are separated by the outer casing 42. That is, in the lighting device 1, the space connecting the lighting fixture 10 to the second lighting fixture 30 is divided by the outer casing 42 into the storage portion 18, which is the first space, and the second space 45. The outer casing inner portion 429 functions as a heat shielding wall and reduces the effect of operating heat generated by the first illuminator 20 on the second light source unit 31, control unit 34, battery 70, and other components of the second illuminator 30. The outer casing inner portion 429 also functions as a heat dissipation path for transmitting operating heat generated by the first illuminator 20 to the outside or to the lighting fixture 10. That is, the outer casing 42 functions as a heat transfer path from the accommodation portion 18, which is the first space, to the attachment portion 9, or functions as a heat transfer path from the accommodation portion 18, which is the first space, to the lighting space illuminated by the first illuminator 20 or the second illuminator 30. The outer casing 42 also functions as a heat transfer path from the second space 45 to the attachment portion 9, or functions as a heat transfer path from the second space 45 to the lighting space illuminated by the first illuminator 20 or the second illuminator 30. A notch 430 is formed in the outer casing inner portion 429. The cutout portion 430 is a through-hole formed by cutting out part of the wall of the outer shell inner portion 429, and serves as a wiring path between the first lighting fixture 20 and the second lighting fixture 30.

As shown in Figures 11 to 13, the outer short side portions 431 form the side walls of the outer shell 42. The outer short side portions 431 are formed to rise from the side edges of the outer shell main portion 420 along the short side direction (Y-axis direction) of the outer shell main portion 420. The outer short side portions 431 form wall portions at both ends of the outer shell 42 in the longitudinal direction (X-axis direction). When the second lighting fixture 30 is attached to the lighting fixture 10, the outer short side portions 431 form part of the side walls at both ends of the second lighting fixture 30 in the longitudinal direction (X-axis direction).

The outer long side portion 427 and outer short side portion 431 of the outer shell portion 42 are positioned so as to pass through the fixture inclined portion 114 when the second lighting fixture 30 is attached to the lighting fixture 10.

The outer casing fixing device 432 fixes the outer casing 42 to the base 44. The outer casing fixing device 432 is inserted into a screw hole 424 formed in the stepped portion 422 and screwed into a screw hole 442 formed in the second light source unit mounting portion 440 of the base 44. The outer casing fixing device 432 is, for example, a thumb screw. As shown in FIG. 13, a nut 434 may be used for the outer casing fixing device 432.

The housing 40 also forms a mounting structure for the second light source 31 and other components within the second space 45 via the base 44. The base 44 is where the second light source 31, holding portion 317, control unit 34, operating unit 36, insulating unit 38, and other components are mounted, and the components mounted on the base 44 are arranged on the base 41. As shown in FIG. 14 , the base 44 has a second light source mounting portion 440, an operating unit mounting portion 443, a control unit mounting portion 445, and a connecting portion 447.

The second light source unit mounting portion 440 is a plate-shaped portion. The second light source unit 31 and the insulating portion 38 are placed and attached to the second light source unit mounting portion 440. The outer casing 42 is also attached to the second light source unit mounting portion 440. The second light source unit mounting portion 440 receives operating heat emitted by the second light source unit 31 and dissipates the received heat. The second light source unit mounting portion 440 is formed with screw holes 441 and 442. The screw holes 441 are formed in two locations corresponding to the main screw holes 323 of the second light source unit 31. The screw holes 441 are fitted with second light source unit fixing devices 327 for fixing the second light source unit 31 to the second light source unit mounting portion 440. The screw holes 442 are formed in two locations corresponding to the screw holes 424 of the outer casing 42. An outer shell fixing device 432 is attached to the screw hole 442 to fix the outer shell 42 to the second light source mounting portion 440.

The operation unit mounting portion 443 is a plate-shaped portion. The operation unit 36 is placed and attached to the operation unit mounting portion 443. A screw hole 444 is formed in the operation unit mounting portion 443. An operation unit fixing device 363 for fixing the operation unit 36 to the operation unit mounting portion 443 is attached to the screw hole 444.

The control unit mounting portion 445 is a plate-shaped portion. The control unit 34 is placed and attached to the control unit mounting portion 445. The control unit mounting portion 445 receives operating heat emitted by the second light source unit 31 via the connecting portion 447 and functions as a heat dissipation path that transfers the received heat to the base 41 and the lighting fixture 10. A screw hole 446 is formed in the control unit mounting portion 445. A control unit fixing device 346 for fixing the control unit 34 to the control unit mounting portion 445 is attached to the screw hole 446.

The connecting portion 447 is a side wall that interconnects the second light source unit mounting portion 440, the operation unit mounting portion 443, and the control unit mounting portion 445. The connecting portion 447 is a plate member that extends vertically when the plate surfaces of the second light source unit mounting portion 440, the operation unit mounting portion 443, and the control unit mounting portion 445 are assumed to be horizontal. Note that the vertical direction does not necessarily have to be strictly perpendicular to the horizontal direction; the connecting portion 447 may be inclined relative to the second light source unit mounting portion 440, the operation unit mounting portion 443, or the control unit mounting portion 445. The connecting portion 447 connects the second light source unit mounting portion 440 and the control unit mounting portion 445 so that they face each other, and also connects the operation unit mounting portion 443 and the control unit mounting portion 445 so that they face each other. The connecting portion 447 receives operating heat emitted by the second light source unit 31 and functions as a heat dissipation path that transmits the received heat to the base 41 and the lighting fixture 10.

The base 44 is formed so that the distance between the second light source unit mounting portion 440 and the control unit mounting portion 445 is greater than the distance between the operation unit mounting portion 443 and the control unit mounting portion 445. The distance between the second light source unit mounting portion 440 and the control unit mounting portion 445 and the distance between the operation unit mounting portion 443 and the control unit mounting portion 445 may vary depending on the thickness of the second light source unit 31 and the thickness of the operation unit 36, respectively. Therefore, the base 44 may be formed so that the distance between the second light source unit mounting portion 440 and the control unit mounting portion 445 is equal to or smaller than the distance between the operation unit mounting portion 443 and the control unit mounting portion 445. In the base 44, the connecting portion 447, the second light source unit mounting portion 440, the operation unit mounting portion 443, and the control unit mounting portion 445 are integrally formed, but these may also be formed separately. The base 44 has an opening 44a formed by the operation unit attachment portion 443 and the control unit attachment portion 445 at a position facing the connecting portion 447. The opening 44a is formed in the base 44 at a position where at least the battery 70 is disposed. When the outer casing 42 of the lighting device 1 is attached to the base 44, at least a portion of the opening 44a is covered by the outer casing 42.

(Holding member 50)
Fig. 15 is a perspective view of the battery 70 arranged in the base 41 of Fig. 13. Fig. 16 is a cross-sectional view of the lighting device 1 of Fig. 4 taken along line B-B. Fig. 17 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 of Fig. 15. Fig. 18 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 of Fig. 16. Next, the holding member 50 will be described with reference to Figs. 11 and 15 to 18. The holding member 50 is an elastic member such as a leaf spring, and holds the battery 70 arranged in the housing 40. The holding member 50 has a fixing portion 51, a holding portion 53, and a holding member fixture 54.

The fixing portion 51 is a flat plate-shaped plate portion. As shown in Figures 15 and 16, the fixing portion 51 is inserted into the holding member fixing portion 411 formed on the base 41, thereby engaging with the base 41 and being attached to the base 41. When inserted into the holding member fixing portion 411 formed on the base 41, the fixing portion 51 abuts against the base 41. As shown in Figure 11, a fixing hole 52 is formed in the fixing portion 51. A holding member fixing device 54 for fixing the holding member 50 to the base 41 is attached to the fixing hole 52. As shown in Figure 16, when the second lighting device 30 is attached to the lighting fixture 10, the fixing portion 51 is positioned so as to be approximately parallel to the mounting portion 9.

The holding portion 53 is formed integrally with the fixed portion 51 and is a plate-like portion that rises from the fixed portion 51. The holding portion 53 is a plate-like portion that extends vertically when the plate surface of the fixed portion 51 is horizontal. When the holding member 50 is attached to the base 41, the holding portion 53 faces the base side portion 414, as shown in FIG. 17 . The holding portion 53 is inclined with respect to the plate surface of the fixed portion 51 so as to approach the fixed portion 51, and it is desirable that the angle between the plate surface of the holding portion 53 and the plate surface of the fixed portion 51 be 90 degrees or less. Therefore, when the holding member 50 is attached to the base 41, the holding portion 53 is inclined so as to approach the base side portion 414.

The retaining portion 53 has a retaining bent portion 53c at its tip. The retaining bent portion 53c is bent in a mountain shape in a cross section in the direction in which the retaining portion 53 rises, and is formed so as to protrude above the plate surface of the fixing portion 51. More specifically, the retaining portion 53 has a sidewall fixing portion 53b connected to the fixing portion 51, and a retaining bent portion 53c formed at the tip of the sidewall fixing portion 53b. The retaining bent portion 53c has a first inclined portion 53c1 connected to the sidewall fixing portion 53b, and a second inclined portion 53c2 connected to the first inclined portion 53c1. The sidewall fixing portion 53b is inclined with respect to the plate surface of the fixing portion 51 so as to approach the fixing portion 51, and the first inclined portion 53c1 of the retaining bent portion 53c is inclined with respect to the plate surface of the fixing portion 51 so as to be closer to the fixing portion 51 than the sidewall fixing portion 53b. The second inclined portion 53c2 of the holding bent portion 53c is inclined in the opposite direction to the inclination direction of the first inclined portion 53c1. Therefore, the first inclined portion 53c1 and the second inclined portion 53c2 form an L-shaped cross section of the holding bent portion 53c. The holding portion 53 is integrally formed with the side wall fixing portion 53b, the first inclined portion 53c1, and the second inclined portion 53c2.

The holding portion 53 has spring properties and is elastically deformable. As shown in FIG. 16 , when the second lighting device 30 is attached to the lighting fixture 10, the holding portion 53 is positioned to extend in the vertical direction (Z-axis direction) of the lighting device 1. Furthermore, when the outer casing 42 is attached to the base 44, as shown in FIG. 16 , the holding portion 53 abuts against the inner outer casing portion 429 of the outer casing 42, thereby restricting elastic deformation and holding the battery 70. In other words, when the outer casing 42 is attached to the base 44, the holding member 50 has a narrower range of movement than when the outer casing 42 is not attached to the base 44. In contrast, as shown in FIG. 18 , when the outer casing 42 is not attached to the base 44, the holding member 50 is elastically deformable within a range of movement that allows the battery 70 to be attached and detached.

The holding member fixture 54 is a component that secures the holding member 50 to the base 41. The holding member fixture 54 is, for example, a screw or rivet. The holding member fixture 54 is inserted through the fixing hole 52 formed in the fixing portion 51 and the mounting hole 413 formed in the base bottom 410 shown in Figure 6.

(Battery 70)
Next, the battery 70 will be described with reference to FIGS. 11 and 15 to 18. The battery 70 supplies second lighting power to the second light source unit 31. The battery 70 is a storage battery. The battery 70 is a so-called four-cell storage battery, but the number of cells constituting the battery 70 is not limited to four and may be other numbers, such as six. The battery 70 is detachably held to the base 41 by a holding member 50. When the outer shell 42 is attached to the pedestal 44, as shown in FIG. 16, the battery 70 is held to the base 41 of the housing unit 40 while being held by the holding member 50. That is, when the battery 70 is placed inside the housing unit 40, it abuts against the inner surface of the housing unit 40 and is held within the second space 45 by the holding member 50 attached to the housing unit 40. More specifically, when the outer casing 42 is attached to the base 44, the battery 70 abuts against the holding bent portion 53c and the base side portion 414 via the holding bent portion 53c, and the holding bent portion 53c supports the lower portion of the battery 70, restricting downward movement of the battery 70. At this time, as described above, the holding portion 53 abuts against the outer casing inner portion 429 of the outer casing 42, thereby restricting elastic deformation. When the outer casing 42 is detached from the base 41, as shown in FIG. 18 , the operator can remove the battery 70 downward by elastically deforming the holding member 50. At this time, the holding portion 53 does not abut against the outer casing inner portion 429 of the outer casing 42, and therefore elastic deformation is not restricted. In Figure 18, arrow S indicates the direction in which the battery 70 or outer casing 42 is attached to the base 41, and arrow R indicates the direction in which the battery 70 or outer casing 42 is removed from the base 41.

(Second lighting fixture 80)
Next, the second lighting fixture fixture 80 will be described with reference to Fig. 6. The second lighting fixture fixture 80 is a member that fixes the second lighting fixture 30 to the lighting fixture 10. The second lighting fixture fixture 80 is, for example, a screw, a rivet, or the like. The second lighting fixture fixture 80 is inserted into the screw hole 113 formed in the fixture bottom 110 and the screw hole 416 formed in the base protrusion 415.

(Hanging string 60)
19 is a perspective view of the lighting device 1 of FIG. 1 with the outer casing 42 of the second lighting fixture 30 removed. The hanging cord 60 temporarily secures the outer casing 42 of the second lighting fixture 30 to the lighting fixture 10. The hanging cord 60 is a cord- or rod-shaped member, and one end is secured to the base 41 and the other end is secured to the outer casing 42.

<Modifications of the lighting device 1>
20 is a cross-sectional view taken along line B-B of a modified example of the lighting device 1 according to the first embodiment of the present invention. The modified example of the lighting device 1 has a second lighting device 30a. The modified example of the lighting device 1 differs from the lighting device 1 only in the configuration of the second lighting device 30, with the other configurations being the same. The second lighting device 30a has a battery 70a and a housing 40a that are different from the battery 70 and housing 40 of the second lighting device 30. The second lighting device 30a differs from the second lighting device 30 only in the battery 70a and housing 40a, with the other configurations being the same. In the modified example of the lighting device 1, parts that have the same configuration as the lighting device 1 are given the same reference numerals, and their description will be omitted.

(Battery 70a)
The battery 70a is a storage battery. The battery 70 is a large storage battery with six cells. The battery 70a has a different number of cells from the battery 70.
(Housing part 40a)
The housing 40a has a holding portion 53a. The housing 40a has the same configuration as the holding portion 53 of the housing 40, except for the configuration of the holding portion 53a. The holding portion 53a has a sidewall fixing portion 53b1 connected to the fixing portion 51 and a holding bent portion 53c formed at the tip of the sidewall fixing portion 53b1. The holding portion 53a is shaped to be suitable for holding a large, so-called six-cell storage battery. For example, the battery 70a is larger than the battery 70, and the sidewall fixing portion 53b1 is longer in the vertical direction (Z-axis direction) than the sidewall fixing portion 53b. That is, the distance between the fixing portion 51 and the holding bent portion 53c of the holding portion 53a is greater than the distance between the fixing portion 51 and the holding bent portion 53c of the holding portion 53.

Embodiment 2.
FIG. 21 is a perspective view of a lighting device 1b according to embodiment 2 of the present invention, viewed from a first direction. FIG. 22 is a perspective view of a lighting device 1b according to embodiment 2 of the present invention, viewed from a second direction. FIG. 23 is a front view of a lighting device 1b according to embodiment 2 of the present invention. FIG. 24 is a bottom view of a lighting device 1b according to embodiment 2 of the present invention. FIG. 25 is a rear view of a lighting device 1b according to embodiment 2 of the present invention. FIG. 26 is a top view of a lighting device 1b according to embodiment 2 of the present invention. FIG. 27 is a side view of a lighting device 1b according to embodiment 2 of the present invention. The configuration of a lighting device 1b according to embodiment 2 will be described with reference to FIGS. 21 to 27 , focusing on differences from the configuration of the lighting device 1 according to embodiment 1. Note that components having the same configuration as those of the lighting device 1 in FIGS. 1 to 20 are denoted by the same reference numerals, and their description will be omitted. The first direction in FIG. 21 is the direction in which the lighting device 1b is viewed from below, on the side where the second illuminator 30 is not provided, in the short-side direction (Y-axis direction) of the lighting device 1b. The second direction in FIG. 22 is the direction in which the lighting device 1b is viewed from below the side where the second lighting fixture 30 is provided, in the short-side direction (Y-axis direction) of the lighting device 1b.

<Lighting device 1b>
The lighting device 1b is installed at a position where it can illuminate the lighting space, and illuminates the lighting space. The lighting device 1b of the second embodiment is a so-called V-shaped lighting device (250 mm wide).

The lighting device 1b comprises an elongated lighting fixture 10b that is attached to a mounting portion 9 such as a ceiling or wall, an elongated first lighting fixture 20 that is detachably attached to the lighting fixture 10b, and a second lighting fixture 30 that is attached to the lighting fixture 10b. In the lighting device 1b, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short side direction (Y-axis direction).

[Lighting fixture 10b]
Lighting fixture 10b has fixture body 11b, fixture end portion 12b, fixture-side connector 13, fixture-side terminal block 14, fixture-side fixing device 15, and fixture-side power line 16. In lighting device 1b of embodiment 2, lighting fixture 10b has a configuration different from lighting fixture 10 of lighting device 1 of embodiment 1.

(Apparatus main body 11b)
The fixture main body 11b is a housing that forms the outer shell of the lighting fixture 10b. The fixture main body 11b is attached to the mounting portion 9 using fasteners such as bolts. The fixture main body 11b has a fixture bottom 110, fixture side portions 111, fixture inclined portions 114b, and fixture side edge portions 117b. The fixture bottom 110, fixture side portions 111, fixture inclined portions 114b, and fixture side edge portions 117b are integrally formed by, for example, bending a metal plate. However, the fixture main body 11b is not limited to being formed by bending a metal plate, and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Furthermore, the appliance bottom portion 110, the appliance side portion 111, the appliance inclined portion 114b, and the appliance side edge portion 117b are not limited to being formed as a single unit, but may be formed as separate bodies as long as these components are securely fixed to each other.

The fixture inclined portions 114b are inclined walls provided in pairs on both sides of the storage portion 18 in the lateral direction (Y-axis direction) of the fixture main body 11b. The fixture inclined portions 114b are formed so as to be inclined with respect to the mounting surface of the mounting portion 9. The pair of fixture inclined portions 114b are formed from each of the longitudinal sides of the fixture side edge 117b upward (toward the Z1 direction) and away from the storage portion 18. In other words, the fixture inclined portions 114b are inclined so that the distance between their ends on the mounting portion 9 side in the vertical direction (Z-axis direction) of the fixture main body 11b is wider than the distance between their ends on the illumination space side. In the lighting device 1b, the storage portion 18 is formed between the pair of fixture inclined portions 114b in the lateral direction (Y-axis direction). The fixture inclined portions 114b form an inclined surface and may reflect light emitted from the light source toward the illumination space. The distance between both ends of the fixture tilting portion 114b in the short side direction (Y-axis direction) of the lighting device 1b is greater than the distance between both ends of the fixture tilting portion 114 in the lighting device 1 in the short side direction (Y-axis direction).

The appliance side edges 117b are edges of the storage section 18 that are provided in pairs on both sides of the storage section 18 in the short direction (Y-axis direction) of the appliance main body 11b. The appliance side edges 117b are formed between the appliance side section 111 and the appliance inclined section 114b. The appliance side edges 117b are formed at the tip of the appliance side section 111 opposite the appliance bottom section 110, and are formed in pairs so as to be spaced apart from each tip of the pair of appliance side sections 111. The appliance side edges 117b form the underside of the appliance main body 11b.

A fixture penetration 115b, which is a through-hole, is formed in the fixture inclined portion 114b and the fixture side edge 117b, which are formed on one side of the housing portion 18 in the lateral direction (Y-axis direction) of the fixture main body 11b. The fixture penetration 115b is formed in the center of the fixture main body 11b in the longitudinal direction (X-axis direction). As shown in FIG. 24 , the fixture penetration 115b is rectangular in the fixture main body 11b when viewed from the lighting space side of the mounting base 9. A second lighting fixture 30 is inserted through this fixture penetration 115b, and the second lighting fixture 30 is positioned in the fixture penetration 115b so as to protrude from the fixture inclined portion 114b and the fixture side edge 117b toward the lighting space side. Therefore, the fixture penetration 115b need only be formed to correspond to the shape and dimensions of the outer casing 42 of the second lighting fixture 30, and is not limited to a rectangular shape when viewed from the lighting space side of the mounting base 9. The instrument penetration portion 115b functions as an attachment/detachment opening for the outer shell portion 42.

(Instrument end 12b)
The fixture end portions 12b are disposed at both longitudinal (X-axis) ends of the fixture main body 11b. The fixture end portion 12b has end plates 120b that cover the longitudinal (X-axis) ends of the fixture main body 11b. The end plates 120b form side walls of the fixture main body 11b extending in the lateral (Y-axis) direction of the fixture main body 11b. The end plates 120b are disposed at the longitudinal (X-axis) ends of the fixture inclined portion 114b and the fixture side edge portion 117b, and together with the fixture main body 11b, form the outer shell of the lighting fixture 10b. The distance between the two lateral (Y-axis) ends of the fixture end portion 12b of the lighting device 1b is greater than the distance between the two lateral (Y-axis) ends of the fixture end portion 12 of the lighting device 1. The end plate 120b has knockout portions 121 formed therein, which form through-holes in the end plate 120b by removing a portion of the wall that constitutes the end plate 120b.

Embodiment 3.
FIG. 28 is a perspective view from a first direction of a lighting device 1c according to embodiment 3 of the present invention. FIG. 29 is a perspective view from a second direction of a lighting device 1c according to embodiment 3 of the present invention. FIG. 30 is a front view of a lighting device 1c according to embodiment 3 of the present invention. FIG. 31 is a bottom view of a lighting device 1c according to embodiment 3 of the present invention. FIG. 32 is a rear view of a lighting device 1c according to embodiment 3 of the present invention. FIG. 33 is a top view of a lighting device 1c according to embodiment 3 of the present invention. FIG. 34 is a side view of a lighting device 1c according to embodiment 3 of the present invention. The configuration of a lighting device 1c according to embodiment 3 will be described with reference to FIGS. 28 to 34 , focusing on differences from the configuration of the lighting device 1 according to embodiment 1. Note that components having the same configuration as the lighting device 1 in FIGS. 1 to 20 are denoted by the same reference numerals, and their description will be omitted. The first direction in FIG. 28 is the direction in which the lighting device 1c is viewed from below, on the side where the second illuminator 30 is not provided, in the short-side direction (Y-axis direction) of the lighting device 1c. The second direction in FIG. 29 is the direction in which the lighting device 1c is viewed from below the side where the second lighting fixture 30 is provided, in the short-side direction (Y-axis direction) of the lighting device 1c.

<Lighting device 1c>
The lighting device 1c is installed at a position where it can illuminate the lighting space, and illuminates the lighting space. The lighting device 1c of the third embodiment is a so-called trough-type lighting device.

The lighting device 1c comprises an elongated lighting fixture 10c that is attached to a mounting portion 9 such as a ceiling or wall, an elongated first lighting fixture 20 that is detachably attached to the lighting fixture 10c, and a second lighting fixture 30 that is attached to the lighting fixture 10c. In the lighting device 1c, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short side direction (Y-axis direction). As shown in FIG. 29, the lighting device 1c is arranged to the side of the lighting fixture 10c in the short side direction (Y-axis direction) of the lighting device 1c. The lighting device 1c of embodiment 3 differs from the lighting device 1 of embodiment 1 and the lighting device 1b of embodiment 2 in that the second lighting fixture 30 is arranged outside the lighting fixture 10c.

[Lighting equipment 10c]
Lighting fixture 10c has fixture main body 11c, fixture end portion 12c, fixture side connector 13, fixture side terminal block 14, fixture side fixing device 15, and fixture side power line 16. Lighting device 1c of embodiment 3 differs in the configuration of lighting fixture 10c from lighting fixture 10 of lighting device 1 of embodiment 1.

(Apparatus main body 11c)
The fixture main body 11c is a housing that forms the outer shell of the lighting fixture 10c. The fixture main body 11c is attached to the mounting portion 9 using fasteners such as bolts. The fixture main body 11c includes a fixture bottom 110, fixture side portions 111, and fixture side edge portions 117c. The fixture bottom 110, fixture side portions 111, and fixture side edge portions 117c are integrally formed, for example, by bending a metal plate. However, the fixture main body 11c is not limited to being formed by bending a metal plate, and may be formed using other materials such as resin or ceramic, or by other methods such as extrusion molding or additive manufacturing. Furthermore, the fixture bottom 110 and fixture side portions 111 are not limited to being integrally formed, and may be formed separately as long as these components are securely fixed to each other. The fixture side edges 117c are edges of the storage section 18 that are provided in pairs on both sides of the storage section 18 in the short direction (Y-axis direction) of the fixture main body 11c. The fixture side edges 117c are formed at the tip of the fixture side section 111 on the side opposite the fixture bottom section 110. The fixture main body 11c of the third embodiment forms the outer shell of a so-called trough-shaped lighting fixture 10, and differs from the fixture main body 11 of the first embodiment in that it does not have the fixture inclined section 114.

(Instrument end 12c)
The fixture end portions 12c are disposed at both longitudinal (X-axis) ends of the fixture main body 11c. The fixture end portions 12c have end plates 120c that cover the longitudinal (X-axis) ends of the fixture main body 11c. The end plates 120c form side walls of the fixture main body 11c that extend in the lateral direction (Y-axis) of the fixture main body 11c. The end plates 120c are disposed at the longitudinal (X-axis) ends of the fixture bottom 110 and the fixture side portions 111, and together with the fixture main body 11c, form the outer shell of the lighting fixture 10c. The end plates 120c are formed with knockout portions 121c that form through-holes in the end plates 120c by removing portions of the wall portions that form the end plates 120c.

Embodiment 4.
FIG. 35 is a perspective view of a lighting device 1d according to embodiment 4 of the present invention, viewed from a first direction. FIG. 36 is a perspective view of a lighting device 1d according to embodiment 4 of the present invention, viewed from a second direction. FIG. 37 is a front view of a lighting device 1d according to embodiment 4 of the present invention. FIG. 38 is a bottom view of a lighting device 1d according to embodiment 4 of the present invention. FIG. 39 is a rear view of a lighting device 1d according to embodiment 4 of the present invention. FIG. 40 is a top view of a lighting device 1d according to embodiment 4 of the present invention. FIG. 41 is a side view of a lighting device 1d according to embodiment 4 of the present invention. The configuration of the lighting device 1d according to embodiment 4 will be described with reference to FIGS. 35 to 41 , focusing on differences from the configuration of the lighting device 1 according to embodiment 1. Note that components having the same configuration as the lighting device 1 in FIGS. 1 to 20 are denoted by the same reference numerals, and their description will be omitted. The first direction in FIG. 35 refers to the direction in which the lighting device 1d is viewed from below, on the side where the second illuminator 30 is not provided, in the short-side direction (Y-axis direction) of the lighting device 1d. The second direction in FIG. 36 is the direction in which the lighting device 1d is viewed from below the side where the second lighting fixture 30 is provided, in the short-side direction (Y-axis direction) of the lighting device 1d.

<Lighting device 1d>
The lighting device 1d is installed at a position where it can illuminate the lighting space, and illuminates the lighting space. The lighting device 1d of the fourth embodiment is a so-called recessed lighting device.

The lighting device 1d comprises an elongated lighting fixture 10d that is attached to a mounting portion 9 such as a ceiling or wall, an elongated first lighting fixture 20 that is detachably attached to the lighting fixture 10d, and a second lighting fixture 30 that is attached to the lighting fixture 10d. In the lighting device 1d, the first lighting fixture 20 and the second lighting fixture 30 are arranged side by side in the short direction (Y-axis direction).

[Lighting fixture 10d]
Lighting fixture 10d has fixture main body 11d, fixture end portion 12d, fixture-side connector 13, fixture-side terminal block 14, fixture-side fixing device 15, and fixture-side power line 16. Lighting device 1d of embodiment 4 differs in the configuration of lighting fixture 10 of lighting device 1 of embodiment 1.

(Apparatus main body 11d)
The fixture main body 11d is a housing that forms the outer shell of the lighting fixture 10d. The fixture main body 11d is attached to the mounting portion 9 using fasteners such as bolts. The fixture main body 11d has a fixture bottom 110, fixture side portions 111d, fixture inclined portions 114d, and fixture side edge portions 117d. The fixture bottom 110, fixture side portions 111d, fixture inclined portions 114d, and fixture side edge portions 117d are integrally formed, for example, by bending a metal plate. However, the fixture main body 11d is not limited to being formed by bending a metal plate, and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Furthermore, the appliance bottom portion 110, the appliance side portion 111d, the appliance inclined portion 114d, and the appliance side edge portion 117d are not limited to being formed integrally, but may be formed separately as long as these components are securely fixed to each other.

The fixture body 11d defines a concave storage section 18 formed by the fixture bottom 110, the fixture side sections 111d, and the fixture end sections 12d (described below). The storage section 18 has a bottom surface formed by the fixture bottom 110, a side wall extending in the longitudinal direction formed by the fixture side sections 111d, and a side wall extending in the lateral direction formed by the fixture end sections 12d. The first lighting fixture 20 is attached to this storage section 18, with a portion of the first lighting fixture 20 housed in it.

The fixture inclined portions 114d are inclined walls provided in pairs on both sides of the storage portion 18 in the lateral direction (Y-axis direction) of the fixture main body 11b. The fixture inclined portions 114d are formed so as to be inclined with respect to the mounting surface of the mounting portion 9. The pair of fixture inclined portions 114d are formed so as to be spaced apart downward (toward the Z2 direction) from the storage portion 18. That is, the fixture inclined portions 114d are inclined so that the distance between their ends on the illumination space side in the vertical direction (Z-axis direction) of the fixture main body 11d is wider than the distance between their ends on the mounting portion 9 side. In the lighting device 1d, the storage portion 18 is not located between the pair of fixture inclined portions 114d in the lateral direction (Y-axis direction), and the pair of fixture inclined portions 114d are formed so as to face each other. However, in a plan view of the lighting device 1d seen from the illumination space side, the storage portion 18 is located between the pair of fixture inclined portions 114d. The fixture inclined portion 114d forms an inclined surface and may reflect light emitted from the light source toward the lighting space.

The appliance side edges 117d are edges of the storage section 18 that are provided in pairs on both sides of the storage section 18 in the short direction (Y-axis direction) of the appliance main body 11d. The appliance side edges 117d are formed between the appliance side section 111d and the appliance inclined section 114d. The appliance side edges 117d are formed at the tip of the appliance side section 111d on the side opposite the appliance bottom section 110, and are formed in pairs so as to be spaced apart from each other from the tip of each of the pair of appliance side sections 111d.

A fixture penetration hole 115d, which is a through-hole, is formed in the fixture inclined portion 114d and the fixture side edge portion 117d, which are formed on one side of the fixture main body portion 11d in the short direction (Y-axis direction) across the storage portion 18. The fixture penetration hole 115d is formed in the center of the fixture main body portion 11d in the longitudinal direction (X-axis direction). As shown in Figure 38, the fixture penetration hole 115d is rectangular in the fixture main body portion 11d when viewed from the lighting space side of the mounting portion 9. A second lighting fixture 30 is inserted through this fixture penetration hole 115d, and the second lighting fixture 30 is positioned in the fixture penetration hole 115d so as to protrude from the fixture inclined portion 114d and the fixture side edge portion 117d toward the lighting space side. Therefore, the fixture penetration hole 115d need only be formed to correspond to the shape and dimensions of the outer casing 42 of the second lighting fixture 30, and is not limited to a rectangular shape when viewed from the lighting space side of the mounting portion 9 in a plan view. The instrument penetration portion 115d functions as an attachment/detachment opening for the outer shell portion 42.

(Instrument end 12d)
The fixture end portions 12d are disposed at both longitudinal (X-axis) ends of the fixture main body 11d. The fixture end portions 12d cover the longitudinal (X-axis) ends of the fixture main body 11d. The fixture end portions 12d form side walls of the fixture main body 11d that extend in the lateral direction (Y-axis) of the fixture main body 11d. The fixture end portions 12d, together with the fixture main body 11d, form the outer shell of the lighting fixture 10d.

Embodiment 5.
FIG. 42 is a perspective view from a first direction of a lighting device 1e according to embodiment 5 of the present invention. FIG. 43 is a perspective view from a second direction of a lighting device 1e according to embodiment 5 of the present invention. FIG. 44 is a front view of a lighting device 1e according to embodiment 5 of the present invention. FIG. 45 is a bottom view of a lighting device 1e according to embodiment 5 of the present invention. FIG. 46 is a rear view of a lighting device 1e according to embodiment 5 of the present invention. FIG. 47 is a top view of a lighting device 1e according to embodiment 5 of the present invention. FIG. 48 is a side view of a lighting device 1e according to embodiment 5 of the present invention. The configuration of a lighting device 1e according to embodiment 5 will be described with reference to FIGS. 42 to 48 , focusing on differences from the configuration of the lighting device 1 according to embodiment 1. Note that parts having the same configuration as the lighting device 1 in FIGS. 1 to 20 are denoted by the same reference numerals, and their description will be omitted. The first direction in FIG. 42 is the direction in which the lighting device 1e is viewed from below, on the side where the second illuminator 30 is not provided, in the short-side direction (Y-axis direction) of the lighting device 1e. The second direction in FIG. 43 is the direction in which the lighting device 1e is viewed from below the side where the second lighting fixture 30 is provided, in the short-side direction (Y-axis direction) of the lighting device 1e.

<Lighting device 1e>
The lighting device 1e is installed at a position where it can illuminate the lighting space, and illuminates the lighting space. The lighting device 1e of the fifth embodiment is a so-called recessed lighting device.

The lighting device 1e comprises an elongated lighting fixture 10e that is attached to a mounting portion 9 such as a ceiling or wall, an elongated first lighting fixture 20 that is detachably attached to the lighting fixture 10e, and a second lighting fixture 30e that is attached to the lighting fixture 10e. In the lighting device 1e, the first lighting fixture 20 and the second lighting fixture 30e are arranged side by side in the short direction (Y-axis direction).

[Lighting fixture 10e]
Lighting fixture 10e has fixture main body 11e, fixture end portion 12e, fixture-side connector 13, fixture-side terminal block 14, fixture-side fixing device 15, and fixture-side power line 16. In lighting device 1e of embodiment 5, lighting fixture 10e and second lighting fixture 30e have configurations that are different from lighting fixture 10 and second lighting fixture 30 of lighting device 1 of embodiment 1.

(Apparatus main body 11e)
The fixture main body 11e is a housing that forms the outer shell of the lighting fixture 10e. The fixture main body 11e is attached to the mounting portion 9 using fasteners such as bolts. The fixture main body 11e has a fixture bottom 110e, fixture side portions 111e, fixture inclined portions 114e, and fixture side edge portions 117e. The fixture bottom 110e, fixture side portions 111e, fixture inclined portions 114e, and fixture side edge portions 117e are integrally formed by, for example, bending a metal plate. However, the fixture main body 11e is not limited to being formed by bending a metal plate, and may be formed using other materials such as resin or ceramic, or may be formed by other methods such as extrusion molding or additive manufacturing. Furthermore, the appliance bottom portion 110e, the appliance side portion 111e, the appliance inclined portion 114e, and the appliance side edge portion 117e are not limited to being formed integrally, but may be formed separately as long as these components are securely fixed to each other.

The fixture body 11e defines a concave storage section 18 formed by the fixture bottom 110e, the fixture side sections 111e, and the fixture end section 12e (described below). The storage section 18 has a bottom surface formed by the fixture bottom 110e, a side wall extending in the longitudinal direction formed by the fixture side sections 111e, and a side wall extending in the lateral direction formed by the fixture end section 12e. The first lighting fixture 20 is attached to this storage section 18, with a portion of the first lighting fixture 20 housed in it.

The fixture inclined portions 114e are inclined walls provided in pairs on both sides of the storage portion 18 in the lateral direction (Y-axis direction) of the fixture main body 11e. The fixture inclined portions 114e are formed so as to be inclined with respect to the mounting surface of the mounting portion 9. The pair of fixture inclined portions 114e are formed so as to be spaced apart downward (toward the Z2 direction) from the storage portion 18. That is, the fixture inclined portions 114e are inclined so that the distance between their ends on the illumination space side in the vertical direction (Z-axis direction) of the fixture main body 11e is wider than the distance between their ends on the mounting portion 9 side. In the lighting device 1e, the storage portion 18 is not located between the pair of fixture inclined portions 114e in the lateral direction (Y-axis direction), and the pair of fixture inclined portions 114e are formed so as to face each other. However, in a plan view of the lighting device 1e viewed from the illumination space side, the storage portion 18 is located between the pair of fixture inclined portions 114e. The fixture inclined portion 114e forms an inclined surface and may reflect light emitted from the light source toward the lighting space.

The appliance side edges 117e are edges of the storage section 18 that are provided in pairs on both sides of the storage section 18 in the short direction (Y-axis direction) of the appliance main body 11e. The appliance side edges 117e are formed between the appliance side section 111e and the appliance inclined section 114e. The appliance side edges 117e are formed at the tip of the appliance side section 111e opposite the appliance bottom section 110e, and are formed in pairs so as to be spaced apart from each other from the tip of the pair of appliance side sections 111e.

The instrument inclined portion 114e and the instrument side edge portion 117e, which are formed on one side of the instrument main body 11e in the short direction (Y-axis direction) with the storage portion 18 in between, are formed with an instrument through-hole 115e. The instrument through-hole 115e is composed of two through-holes: a first through-hole 116e and a second through-hole 118e. The first through-hole 116e and the second through-hole 118e are formed along the longitudinal direction (X-axis direction) of the instrument main body 11e.

The first through-portion 116e is formed in the center of the fixture body 11e in the longitudinal direction (X-axis direction). As shown in FIG. 45, the first through-portion 116e is rectangular in plan view of the mounting portion 9 viewed from the lighting space side. The outer casing 42e of the second lighting fixture 30e is inserted into this first through-portion 116e, and the second light source 31 of the second lighting fixture 30e is positioned in the first through-portion 116e so as to protrude toward the lighting space from the fixture inclined portion 114e and the fixture side edge 117e. Therefore, the first through-portion 116e only needs to be formed to correspond to the shape and dimensions of the outer casing 42e of the second lighting fixture 30e, and is not limited to a rectangular shape in plan view of the mounting portion 9 viewed from the lighting space side. The fixture through-portion 115e functions as an attachment/detachment opening for the outer casing 42e.

As shown in FIG. 45, the second through-hole 118e is rectangular in shape in the fixture main body 11e when viewed from the lighting space toward the mounting portion 9. This second through-hole 118e is positioned so that the operating unit 36 of the second lighting fixture 30e is exposed via the fixture inclined portion 114e and the fixture side edge 117e. Therefore, the second through-hole 118e only needs to be formed to correspond to the shape and dimensions of the operating unit 36 of the second lighting fixture 30e, and is not limited to a rectangular shape when viewed from the lighting space toward the mounting portion 9. In the lighting device 1e, the operating surface 360 of the operating unit 36, such as the operating button 361 and indicator light 362, is exposed to the outside of the fixture main body 11e through the second through-hole 118e.

(Instrument end 12e)
The fixture end portions 12e are disposed at both longitudinal ends (X-axis direction) of the fixture main body 11e. The fixture end portions 12e cover the longitudinal (X-axis direction) ends of the fixture main body 11e. The fixture end portions 12e form side walls of the fixture main body 11e extending in the lateral direction (Y-axis direction) of the fixture main body 11e. The fixture end portions 12e, together with the fixture main body 11e, form the outer shell of the lighting fixture 10e.

[Second lighting device 30e]
An overview of the second lighting device 30e will be described with reference to Figures 42 to 48. The second lighting device 30e is an emergency lighting device that emits light to illuminate the lighting space in an emergency when power is not supplied to the lighting device 1e from outside the lighting device 1e for some reason, such as a power outage. The second lighting device 30e has a smaller outer shell 42e exposed from the lighting device 10e than the lighting device 10 of the first embodiment, and the lighting device 1e has an improved design compared to the lighting device 1.

The second lighting fixture 30e is attached to the lighting fixture 10e and, together with the first lighting fixture 20, constitutes the lighting device 1e. The second lighting fixture 30e is formed in an elongated shape and is attached along the longitudinal direction (X-axis direction) of the lighting fixture 10e. The second lighting fixture 30e is also provided in the center of the lighting fixture 10e in the longitudinal direction (X-axis direction). The second lighting fixture 30e is arranged alongside the first lighting fixture 20 in the lateral direction (Y-axis direction) of the lighting fixture 10e. The second lighting fixture 30e is arranged within the lighting fixture 10e so that the longitudinal direction of the first lighting fixture 20 and the longitudinal direction of the second lighting fixture 30e are parallel in a plan view of the mounting portion 9 viewed from the lighting space side. The second lighting fixture 30e is arranged to protrude from the fixture penetration portion 115e formed in the fixture inclined portion 114e. More specifically, the outer casing 42e of the second lighting fixture 30e is positioned to protrude from the first through-hole 116e of the fixture through-hole 115e, and the operating unit 36 of the second lighting fixture 30e is positioned to be exposed from the second through-hole 118e of the fixture through-hole 115e. The second lighting fixture 30e has a second light source unit 31, a control unit 34, an operating unit 36, an insulating unit 38, a housing unit 40e, a holding member 50, a battery 70, a second lighting fixture fixing device 80, and a hanging cord 60.

Figure 49 is a cross-sectional view of the lighting device 1e of Figure 45 taken along line E-E. Figure 50 is an oblique view of the second lighting fixture 30e of Figure 42 from a third direction. Figure 51 is an exploded oblique view of the second lighting fixture 30e of Figure 42 from a third direction. Figure 52 is an oblique view of the second lighting fixture 30e of Figure 49 from a fourth direction. Figure 53 is an exploded oblique view of the second lighting fixture 30e of Figure 49 from a fourth direction. Figure 54 is a detailed exploded oblique view of the second lighting fixture 30e of Figure 51 with the outer casing 42e removed. Figure 55 is a detailed exploded oblique view of the second lighting fixture 30e of Figure 53 with the outer casing 42e removed. The configuration of the second lighting fixture 30 will be explained in more detail using Figures 49 to 55. Note that the third direction in Figures 50 and 51 is a perspective view of the second illuminator 30e when viewing the lighting device 1e from the outside to the inside, and from the illuminated space toward the mounting portion 9, in the short-side direction (Y-axis direction) of the lighting device 1e. Furthermore, the fourth direction in Figures 52 and 53 is a perspective view of the second illuminator 30e when viewing the lighting device 1e from the inside to the outside, and from the illuminated space toward the mounting portion 9, in the short-side direction (Y-axis direction) of the lighting device 1e. Furthermore, in Figures 50 to 55, the up-down direction (Z-axis direction) on the paper illustrating the second illuminator 30e is shown opposite to the up-down direction (Z-axis direction) on the paper of the lighting device 1e in Figure 42.

(Second light source section 31)
The second light source unit 31 is an emergency light source that emits light. As shown in FIGS. 50 and 52 , the second light source unit 31 is housed within the housing unit 40e with a portion of the second translucent unit 312 exposed from the housing unit 40e. As shown in FIGS. 54 and 55 , the second light source unit 31 includes a second light source substrate 310, a second light-emitting element 311, a second translucent unit 312, a holder 317e, and a second light source unit fixture 327. Note that the dotted line Lt1 in FIG. 49 is a line comparing the position of the tip of the lens unit 313 on the illumination side with the position of the tip of the main unit 220 of the first translucent unit 22 that constitutes the first lighting device 20. Furthermore, the dotted line Lt2 is a line comparing the mounting position of the lens unit 313 with the mounting position of the main unit 220 of the first translucent unit 22 that constitutes the first lighting device 20. As can be seen from the dotted line Lt2, in the lighting device 1e, the lens unit 313 is disposed closer to the illumination space than the main unit 220 of the first lighting fixture 20. That is, in the direction perpendicular to the fixture bottom 110e, the lens unit 313 is disposed higher than the main unit 220, with the fixture bottom 110e and its extended surface as the reference. Furthermore, as can be seen from the dotted line Lt1, in the lighting device 1e, the distance between the tip of the lens unit 313 on the irradiation side and the fixture bottom 110e and its extended surface is greater than the distance between the tip of the main unit 220 on the irradiation side and the fixture bottom 110e and its extended surface. Note that, in the lighting device 1e, it is sufficient that a partition is provided between the main unit 220 of the first lighting fixture 20 and the lens unit 313 of the second lighting fixture 30, and the positional relationship between the lens unit 313 and the main unit 220 is not limited to the above-described positional relationship.

The mounting portion 316 of the second light source unit 31 is a flange formed around the lens unit 313. When the second light-transmitting unit 312 is attached to the holding portion 317e, it is guided by the mounting guide 321 of the holding portion 317e and engages with the holding protrusion 320 of the holding portion 317e.

The holder 317e is used to secure the second light source substrate 310 and the lens portion 313 to the second pedestal portion 48e of the pedestal portion 45e (described below). As shown in Figures 51 and 53, the holder 317e has a main holder portion 318e and a secondary holder portion 324e. The main holder portion 318e is formed in a plate shape and serves as a base on which the second light-transmitting portion 312, which functions as a lens, is attached.

The main holder 318e has a holding protrusion 320 that engages the attached second light-transmitting portion 312. The holding protrusion 320 is provided on a side wall 318a that rises from the main holder 318e, and is a protrusion that extends inward from the side wall 318a. The holding protrusion 320, together with the main holder 318e, holds the second light-transmitting portion 312 by sandwiching it from above and below (in the Z-axis direction). The second light-transmitting portion 312 is positioned on the lens holder 319 of the main holder 318e by the holding protrusion 320. The holder 317e forms an attachment guide 321 between the lens holder 319 and the holding protrusion 320. The attachment guide 321 is a groove formed between the lens holder 319 and the holding protrusion 320. The mounting guide 321 engages with the mounting portion 316 of the second light transmitting portion 312 when the second light transmitting portion 312 is attached to the holding portion 317e, and guides the sliding of the attached second light transmitting portion 312. A through hole 322 is formed in the main holding portion 318e. The through hole 322 is formed to be located above the mounting range of the second light emitting element 311. When the second light transmitting portion 312 is attached to the main holding portion 318e, the lens portion 313 and the second light emitting element 311 face each other via the through hole 322. Therefore, light emitted from the second light emitting element 311 reaches the lens portion 313 via the through hole 322. The main holding portion 318e is further formed with main portion screw holes 323. The main portion screw holes 323 are formed in two locations on the main holding portion 318e, with the lens holding portion 319 in between. The main screw hole 323 is a hole through which a second light source unit fixing device 327 for fixing the second light source unit 31 to the base unit 45e is inserted. Of the two main screw holes 323 formed, one main screw hole 323 overlaps with and communicates with a secondary screw hole 325 formed in the secondary holding portion 324e.

The secondary holding portion 324e is a plate-shaped member that engages the second light-transmitting portion 312 arranged in the lens holding portion 319 to prevent it from slipping out of the mounting guide 321. The secondary holding portion 324e also secures the second light-transmitting portion 312 to prevent it from rattling within the mounting guide 321. A secondary screw hole 325 is formed in the secondary holding portion 324e. The secondary screw hole 325 is a hole through which a second light source unit fixing device 327 is inserted to secure the second light source unit 31 to the base portion 45e. The secondary screw hole 325 overlaps with and communicates with the main screw hole 323 formed in the main holding portion 318e.

The second light source unit fixing device 327 is a member that fixes the second light source unit 31 to the second base portion 48e of the base portion 45e. The second light source unit fixing device 327 is, for example, a screw, a rivet, or the like. The second light source unit fixing device 327 is inserted into the main portion screw hole 323 formed in the main holding portion 318 and the secondary portion screw hole 325 formed in the secondary holding portion 324.

(Control unit 34)
The screw holes 344 formed in the first case 343 of the case 342 are holes through which a control unit fixture 346 for fixing the control unit 34 to the first pedestal 46 e of the pedestal 45 e is inserted. That is, the control unit fixture 346 fixes the control unit 34 to the first pedestal 46 e of the pedestal 44.

(Operation unit 36)
The operation unit fixing device 363 fixes the operation unit 36 to the first base portion 46e of the base portion 45e.

(Insulating portion 38)
The insulating portion 38 is disposed within the second lighting device 30e between the second light source substrate 310 of the second light source unit 31 and the second light source unit mounting portion 480e of the second pedestal 48e. The insulating portion 38 electrically insulates the second light source substrate 310 of the second light source unit 31 from the second light source unit mounting portion 480e of the second pedestal 48e. The insulating portion screw hole 380 formed in the insulating portion 38 is a hole through which a second light source unit fastener 327 for fixing the second light source unit 31 to the second light source unit mounting portion 480e of the second pedestal 48e is inserted. When the main holder portion 318e of the second light source unit 31 is fixed to the second light source unit mounting portion 480e of the second pedestal 48e, the insulating portion 38 is also fixed to the second light source unit mounting portion 480e of the pedestal 48e.

(Housing part 40e)
Next, the housing 40e of the second lighting device 30e will be described with reference to FIGS. 49 to 55. The housing 40e constitutes the outer shell of the second lighting device 30e. The housing 40e is box-shaped and includes an outer shell 42e and a base 41e, forming a second space 45 therein. The second space 45 formed by the housing 40e accommodates the second light source 31, the control unit 34, the operation unit 36, and the insulating unit 38. As shown in FIGS. 50 and 52, the second lighting device 30e is covered by the housing 40e, which houses the entire optical system including the second light source 31. While the lens unit 313 and the outer shell fixing device 432 are exposed, neither protrudes beyond the outer surface 420a of the housing 40e. Therefore, the housing 40e serves as a partition between the first lighting device 20, which serves as a normal light source, and the second lighting device 30e, which serves as an emergency light source. The housing 40e has a base 41e, an outer shell 42e, and a pedestal 45e.

The base 41e serves as a base for housing the second light source unit 31. The base 41e has a base bottom 410e, base side portions 414e, and a base extension 415e. The base bottom 410e is a member formed in the shape of a rectangular plate. The first pedestal portion 46e of the pedestal unit 45e is attached to the base bottom 410e.

The base side portion 414e guides the movement of the outer shell portion 42e when the outer shell portion 42e is attached to the base 41e. The base side portion 414e is a side wall that rises from the edge of the base bottom portion 410e. The base side portion 414e is provided along the longitudinal direction (X-axis direction) of the elongated base bottom portion 410e. When the first pedestal portion 46e of the pedestal portion 45e is attached to the base 41e, the base side portion 414e faces the pedestal outer portion 467e, and the base side portion 414e and pedestal outer portion 467e are fixed together by fasteners such as screws.

The base extension 415e is an attachment portion for attaching the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e. The base extension 415e is a plate member that is continuous with the base bottom 410 and formed integrally with the base bottom 410e, extending from the base bottom 410e. The base extension 415e is provided on the side of the base bottom 410e opposite the side on which the base side 414 is provided. The base extension 415e extends on the opposite side of the base side 414e via the pedestal portion 45e. When the second lighting fixture 30e is placed in the lighting fixture 10e, the base extension 415e faces and abuts against the fixture bottom 110e. A screw hole 416e is formed in the base extension 415e. The screw hole 416e is a hole through which the second lighting fixture fixing device 80 is inserted to fix the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e.

The outer casing 42e forms part of the outer casing of the second lighting fixture 30e and constitutes the exterior design element of the second lighting fixture 30e. As shown in Figures 51 and 53, the outer casing 42e is formed in a roughly rectangular box shape with an opening 42a on one side. The outer casing 42e is attached to the second pedestal 48e of the pedestal 45e so as to cover part of the base 41e. In other words, the outer casing 42e is attached to the base 41e via the pedestal 45e. By attaching the outer casing 42e to the second pedestal 48e of the pedestal 45e, the outer casing 42e covers and houses the second light source unit 31 except for the exposed portion. Furthermore, by attaching the outer casing 42e to the second pedestal 48e of the pedestal 45e, the outer casing 42e covers and houses the second pedestal 48e inside. The outer shell 42e has an outer shell main portion 420e, an outer shell long side portion 427e, an outer shell short side portion 431e, and an outer shell fastener 432.

The outer casing main portion 420e is a wall located on the surface opposite the opening 42a formed in the outer casing portion 42e. The outer casing main portion 420e is a rectangular, elongated, plate-like wall. The outer casing main portion 420e faces the second light source unit mounting portion 480e when the outer casing portion 42e is attached to the base portion 45e. The outer casing main portion 420e forms part of the underside of the lighting device 1e when the second illuminator 30e is attached to the lighting fixture 10e. As shown in Figures 50 to 53, the outer casing main portion 420e has a second translucent member arrangement portion 421e. The outer casing portion 42e is smaller than the outer casing portion 42 of the lighting device 1 of embodiment 1, and the outer casing main portion 420 of the outer casing portion 42e does not have an operation unit arrangement portion 425 or an operation through-hole 426.

The second translucent member arrangement portion 421e is the portion of the main outer casing portion 420e that faces the second translucent portion 312 arranged within the housing portion 40e. That is, in the second lighting device 30e, the second translucent portion 312 is arranged below the second translucent member arrangement portion 421e. The second translucent member arrangement portion 421e has a step portion 422e.

The step portion 422e is a flat wall portion formed by recessing the wall of the outer main portion 420e, and a step is formed between the step portion 422e and the outer surface 420a of the outer main portion 420e. The step portion 422e is a portion that is recessed inward of the outer main portion 42e. As shown in Figures 51 and 53, the step portion 422e has a light-transmitting portion through-hole 423e and a screw hole 424e formed therein. The light-transmitting portion through-hole 423e is a through-hole formed in the step portion 422e. When the outer main portion 42e is attached to the base portion 45e, the light-transmitting portion through-hole 423e is formed in a position facing the lens portion 313, which is the second light-emitting portion. When the outer shell 42e is attached to the second pedestal 48e, the lens 313 of the second light-transmitting portion 312 arranged inside the housing 40e is exposed to the outside from the step 422e via the light-transmitting portion through-hole 423e. When the outer shell 42e is attached to the base 41e via the second pedestal 48e, a portion of the lens 313 of the second light-transmitting portion 312 arranged inside the housing 40e protrudes to the outside from the step 422e via the light-transmitting portion through-hole 423e. Screw holes 424e are formed in two locations on the step 422e, separated by the light-transmitting portion through-hole 423e. The screw holes 424e are holes through which outer shell fasteners 432 are inserted to secure the outer shell 42e to the second pedestal 48e of the pedestal 45e.

The outer shell longitudinal side portion 427e constitutes the side wall of the outer shell portion 42e. The outer shell longitudinal side portion 427e is formed to rise from the side edge of the outer shell main portion 420e along the longitudinal direction (X-axis direction) of the outer shell main portion 420e. The outer shell longitudinal side portion 427e has an outer shell outer portion 428e and an outer shell inner portion 429e. The outer shell outer portion 428e and the outer shell inner portion 429e are formed to face each other. Furthermore, when the outer shell portion 42e is attached to the base 41e via the second pedestal portion 48e, the outer shell inner portion 429e is positioned on the side of the base 41e where the base protrusion 415e extends from the base bottom portion 410e. Furthermore, when the outer shell portion 42e is attached to the base 41e via the second pedestal portion 48e, the outer shell inner portion 429e forms a sidewall from the outer surface 420a to the first pedestal extension portion 473e (described later). When the second lighting fixture 30e is attached to the lighting fixture 10e, the outer shell outer portion 428e forms the outer sidewall of the lighting device 1e and the second lighting fixture 30e in the short-side direction (Y-axis direction). Furthermore, in the short-side direction (Y-axis direction) of the lighting device 1e, the outer shell inner portion 429e forms the inner sidewall of the second lighting fixture 30e relative to the outer shell outer portion 428e.

When the second lighting fixture 30e is attached to the lighting fixture 10e, the inner outer casing portion 429e functions as a partition wall separating the storage portion 18 of the lighting fixture 10e from the various components of the second lighting fixture 30e, as shown in FIG. 49 . That is, when the first lighting fixture 20 is attached to the lighting fixture 10e, the outer casing portion 42e is arranged on the lighting fixture 10e so as to separate the lens portion 313, which is the second light-emitting portion, from the main portion 220, which is the first light-emitting portion. The storage portion 18, which is the first space, and the second space 45 are separated by the outer casing portion 42e. The inner outer casing portion 429e functions as a heat-shielding wall, mitigating the impact of operating heat generated by the first lighting fixture 20 on the various components of the second lighting fixture 30e, such as the second light source portion 31, control portion 34, and battery 70. The outer casing inner portion 429e also functions as a heat dissipation path for transmitting operating heat generated by the first lighting fixture 20 to the outside or to the lighting fixture 10e. That is, the outer casing 42e functions as a heat transfer path from the housing 18 (the first space) to the mounting portion 9, or functions as a heat transfer path from the housing 18 (the first space) to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30. The outer casing 42e also functions as a heat transfer path from the second space 45 to the mounting portion 9, or functions as a heat transfer path from the second space 45 to the lighting space illuminated by the first lighting fixture 20 or the second lighting fixture 30.

The outer short side portions 431e form the side walls of the outer shell portion 42e. The outer short side portions 431e are formed to rise from the side edges of the outer shell main portion 420e along the short side direction (Y-axis direction) of the outer shell main portion 420e. The outer short side portions 431e form wall portions at both ends of the outer shell portion 42e in the longitudinal direction (X-axis direction). When the second lighting fixture 30e is attached to the lighting fixture 10e, the outer short side portions 431e form part of the side walls at both ends of the second lighting fixture 30e in the longitudinal direction (X-axis direction).

The outer long side portion 427e and outer short side portion 431e of the outer portion 42e are positioned so as to penetrate the fixture inclined portion 114e when the second lighting fixture 30e is attached to the lighting fixture 10e.

The outer casing fastener 432 fastens the outer casing 42e to the second base portion 48e of the base portion 45e. The outer casing fastener 432 is inserted into a screw hole 424e formed in the stepped portion 422e and screwed into a screw hole 482e formed in the second light source unit mounting portion 480e of the second base portion 48e that constitutes the base portion 45e. The outer casing fastener 432 is, for example, a thumb screw. As shown in Figures 51 and 53, a nut 434 may be used for the outer casing fastener 432.

The housing 40e forms a mounting structure for the second light source 31 and other components via the pedestal 45e. The pedestal 45e is where the second light source 31, holding portion 317e, control unit 34, operation unit 36, insulating unit 38, and other components are mounted, and the components mounted on the pedestal 45e are arranged on the base 41e. The pedestal 45e has a first pedestal 46e and a second pedestal 48e. The second pedestal 48e is mounted on the first pedestal 46e, and the second pedestal 48e is attached to the first pedestal 46e. The second pedestal 48e is also mounted on the base 41e.

The first base portion 46e forms a structure to which the second base portion 48e, control unit 34, operating unit 36, holding member 50, etc. are attached. As shown in Figures 54 and 55, the first base portion 46e is formed in the shape of a rectangular prism-shaped box with an opening 46e1 on one side. The first base portion 46e is attached to the base portion 41e so as to cover the base portion 41e. By attaching the first base portion 46e to the base 41e, the first base portion 46e covers and houses the control unit 34 and the operating unit 36 except for the exposed portions. Furthermore, by attaching the first base portion 46e to the base 41e, the first base portion 46e covers and houses the battery 70 and the holding member 50 that holds the battery 70. The first base portion 46e has a base main portion 460e, a base long side portion 466e, a first base extension portion 473e, and a base short side portion 475e.

The base main portion 460e is a wall that forms part of the housing portion 18, which houses the operating unit 36, the control unit 34, the holding member 50, the battery 70, etc. The base main portion 460e is a plate-like wall located on the surface facing the opening 46e1 formed in the first base portion 46e. The base main portion 460e is also a rectangular, elongated plate-like wall. When the first base portion 46e is attached to the base 41e, the base main portion 460e faces the base bottom portion 410e. When the second lighting fixture 30 is attached to the lighting fixture 10, the base main portion 460e faces the fixture inclined portion 114e and the fixture side edge portion 117e.

The base main part 460e is formed with a main part mounting opening 488e and a main part wire insertion hole 490e. The main part mounting opening 488e is a through hole formed in the short direction (Y-axis direction) from the inner side of the base main part 460e. Two main part mounting openings 488e are formed along the longitudinal direction (X-axis direction) of the base main part 460e. The base fixing part 483e of the second base part 48e is inserted and fixed into the main part mounting opening 488e. The main part wire insertion hole 490e is a through hole formed along the longitudinal direction of the base main part 460e. Electrical wires are inserted and positioned in the main part wire insertion hole 490e. The base main part 460e has an operation unit mounting part 461e and a control unit mounting part 464e.

The operation unit attachment portion 461e is the portion of the first base portion 46e where the operation unit 36 is attached. The operation unit attachment portion 461e faces the operation unit 36 located inside the first base portion 46e. That is, in the second lighting device 30e, the operation unit 36 is located below the operation unit attachment portion 461e of the first base portion 46e. The operation unit attachment portion 461e is formed with an operation unit through-hole 462e and a screw hole 463e.

The operation unit through-hole 462e is a through-hole formed in the operation unit mounting portion 461e. When the operation unit 36 is mounted inside the first base portion 46e, the operation surface portion 360 of the operation unit 36 located inside the first base portion 46e is exposed from the wall surface of the operation unit mounting portion 461e through the operation unit through-hole 462e. Furthermore, when the second lighting device 30e is mounted to the lighting fixture 10e, the operation unit through-hole 462e and the second through-hole 118e are connected. The operation surface portion 360, including the operation buttons 361 and indicator lights 362 of the operation unit 36, is exposed to the outside of the fixture body 11e through the operation unit through-hole 462e and the second through-hole 118e. With the operation surface portion 360 exposed on the underside of the lighting device 1, the operator can operate the operation buttons 361 of the operation unit 36 and recognize whether the indicator lights 362 are on or off. An operation unit fastener 363, such as a screw or rivet, is fitted into the screw hole 463e to fasten the operation unit 36 to the operation unit mounting portion 461e. The operation unit 36 is attached to the operation unit mounting portion 461e from the inside of the first base portion 46e using the operation unit fastener 363.

The control unit mounting portion 464e is the portion of the first base portion 46e where the control unit 34 is mounted. The control unit mounting portion 464e faces the first case 343 of the control unit 34 located inside the first base portion 46e. In other words, in the second lighting device 30e, the control unit 34 is located below the control unit mounting portion 464e of the first base portion 46e. A screw hole 465e is formed in the control unit mounting portion 464e.

A control unit fastener 346, such as a screw or rivet, is fitted into the screw hole 465e to fasten the control unit 34 to the control unit mounting portion 464e. The control unit 34 is attached to the control unit mounting portion 464e from the inside of the first base portion 46e using the control unit fastener 346.

The base longitudinal side portion 466e is a wall that forms part of the housing portion 18 that houses the operating unit 36, the control unit 34, the holding member 50, the battery 70, etc. As shown in Figures 54 and 55, the base longitudinal side portion 466e forms the side wall of the first base portion 46e. The base longitudinal side portion 466e is formed to rise from the side edge of the base main portion 460e along the longitudinal direction (X-axis direction) of the base main portion 460e. The base longitudinal side portion 466e has an outer base portion 467e and an inner base portion 470e.

The base outer portion 467e and the base inner portion 470e are formed to face each other. When the second lighting fixture 30e is attached to the lighting fixture 10e, the base outer portion 467e forms part of the outer side wall in the short direction (Y-axis direction) of the lighting device 1e and the second lighting fixture 30e, as shown in FIG. 46. The base inner portion 470e forms the inner side wall of the second lighting fixture 30e relative to the base outer portion 467e in the short direction (Y-axis direction) of the lighting device 1e. When the second lighting fixture 30e is attached to the lighting fixture 10e, the base inner portion 470e is arranged along the fixture side portion 111e of the lighting fixture 10e.

As shown in Figures 54 and 55, the base outer portion 467e is formed with a holding member fixing portion 468e and an attachment hole 469e. The holding member fixing portion 468e is a bridge-shaped cut-and-raised portion. In other words, the holding member fixing portion 468e is a plate material cut and raised from the base outer portion 467e, and both ends are formed continuous with the base outer portion 467e. The fixing portion 51 of the holding member 50 is inserted into the holding member fixing portion 468e. The attachment hole 469e is a hole through which a holding member fixing tool 54 for fixing the holding member 50 to the base outer portion 467e is inserted.

The base inner portion 470e is formed with a battery attachment/detachment portion 471e, a side wire insertion hole 472e, and a side mounting opening 489e. The battery attachment/detachment portion 471e is a through-hole that serves as an opening for inserting and removing the battery 70 into the first base portion 46e. The battery attachment/detachment portion 471e is formed at a position within the first base portion 46e where the battery 70 is located. When the outer casing 42e of the lighting device 1e is attached to the second base portion 48e of the base portion 45e, at least a portion of the battery attachment/detachment portion 471e is covered by the outer casing 42e. The battery attachment/detachment portion 471e may be formed contiguous with the base inner portion 470e and the main base portion 460e. The side wire insertion hole 472e is a through-hole that serves as a wiring path between the first lighting fixture 20 and the second lighting fixture 30e. The side mounting opening 489e is formed starting from the main mounting opening 488e and extending along the longitudinal direction (X-axis direction) of the base inner portion 470e.

The first base extension 473e is a bent piece formed at the end of the base inner portion 470e. The first base extension 473e is formed at the end opposite the base main portion 460e via the base inner portion 470e. The first base extension 473e, together with the base extension 415e, is an attachment portion for attaching the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e. When attaching the second lighting fixture 30e to the fixture bottom 110e of the lighting fixture 10e, the first base extension 473e faces the base extension 415e and the fixture bottom 110e and abuts against the base extension 415e and the fixture bottom 110e. That is, when the second lighting fixture 30e is attached to the lighting fixture 10e, the first base extension 473e is sandwiched between the base extension 415e and the fixture bottom 110e. A screw hole 474e is formed in the first base extension 473e. The screw hole 474e is a hole through which the second lighting fixture fixing device 80 is inserted to fix the second lighting fixture 30e to the fixture bottom 110e.

The base short side portions 475e are walls that form part of the storage section 18, which houses the operating unit 36, the control unit 34, the holding member 50, the battery 70, etc. As shown in Figures 54 and 55, the base short side portions 475e form the side walls of the first base portion 46e. The base short side portions 475e are formed to rise from the side edges of the base main portion 460e along the short direction (Y-axis direction) of the base main portion 460e. The base short side portions 475e form wall portions at both ends of the first base portion 46e in the longitudinal direction (X-axis direction). When the second lighting device 30e is attached to the lighting fixture 10e, the base short side portions 475e form part of the side walls at both ends of the second lighting device 30e in the longitudinal direction (X-axis direction).

The second base 48e is a base that attaches the second light source 31 to the first base 46e. The second base 48e is attached to the main base portion 460e of the first base 46e. The second base 48e has a second light source attachment portion 480e, a base fixing portion 483e, a connecting portion 485e, a base side portion 486e, and a second base fixing device 487e.

The second light source unit mounting portion 480e is a plate-shaped portion. The second light source unit 31 and the insulating portion 38 are placed and attached to the second light source unit mounting portion 480e. The outer casing 42e is also attached to the second light source unit mounting portion 480e. The second light source unit mounting portion 480e receives operating heat emitted by the second light source unit 31 and dissipates the received heat. When the second base portion 48e is attached to the first base portion 46e, the second light source unit mounting portion 480e faces the main base portion 460e of the first base portion 46e. The second light source unit mounting portion 480e is formed with a screw hole 481e and a screw hole 482e. The screw holes 481e are formed in two locations corresponding to the main portion screw holes 323 of the second light source unit 31. The screw holes 481e are fitted with second light source unit fixing devices 327 for fixing the second light source unit 31 to the second light source unit mounting portion 480e. The screw holes 482e are formed in two locations corresponding to the screw holes 424e of the outer casing 42e. The screw holes 482e are fitted with outer casing fixing devices 432 for fixing the outer casing 42e to the second light source unit mounting portion 480e.

The base fixing portion 483e is a bent piece used to attach the second base portion 48e to the first base portion 46e and secure the second base portion 48e to the first base portion 46e. The base fixing portion 483e is formed at the longitudinal end of the second base portion 48e, and is formed in two locations with the second light source unit mounting portion 480e in between. When attaching the second base portion 48e to the first base portion 46e, the base fixing portion 483e is inserted into the main portion mounting opening 488e formed in the first base portion 46e and abuts against the base main portion 460e of the first base portion 46e from the inside of the first base portion 46e. A screw hole 484e is formed in the base fixing portion 483e. A second base fixing device 487e, such as a screw or rivet, is fitted into the screw hole 484e to fix the second base 48e to the first base 46e.

The connecting portion 485e is a plate-shaped portion that interconnects the second light source unit mounting portion 480e and the base fixing portion 483e. The connecting portion 485e is formed at the end of the second light source unit mounting portion 480e in the longitudinal direction (X-axis direction), i.e., on the short side. The connecting portion 485 positions the second light source unit mounting portion 480e above the main base portion 460e of the first base portion 46e. The connecting portion 485e functions as a heat dissipation path that transfers operating heat generated by the second light source unit 31 to the base portion 41e and the lighting fixture 10e.

The base side portion 486 is a bent piece provided on the longitudinal side of the second light source unit mounting portion 480e. The base side portion 486 restricts elastic deformation of the holding member 50 when the outer shell portion 42e is attached to the second base portion 48e.

The second base fixing device 487e is, for example, a screw or a rivet. The second base fixing device 487e is used to attach the second base 48e to the first base 46e. The second base fixing device 487e is inserted into a screw hole 484e formed in the base fixing portion 483e that constitutes the second base 48e, and fixes the base fixing portion 483e of the second base 48e to the base main portion 460e of the first base 46e.

(Holding member 50)
Figure 56 is a cross-sectional view of the lighting device 1e of Figure 45 taken along line F-F. Figure 57 is a schematic cross-sectional view showing the attachment and detachment of the battery 70 of Figure 56. Next, the holding member 50 will be described with reference to Figures 54 to 57. The holding member 50 is an elastic member such as a leaf spring, and holds the battery 70 placed in the first pedestal portion 46e of the housing portion 40e. The holding member 50 has a fixing portion 51, a holding portion 53, and a holding member fixture 54.

The fixing portion 51 is a flat plate-shaped member. As shown in Figures 54 and 55, the fixing portion 51 is inserted into the holding member fixing portion 468e formed on the base outer portion 467e, thereby engaging with and attaching to the base outer portion 467e. When the fixing portion 51 is inserted into the holding member fixing portion 468e formed on the base outer portion 467e, the fixing portion 51 abuts against the base outer portion 467e. A fixing hole 52 is formed in the fixing portion 51. A holding member fixing device 54 for fixing the holding member 50 to the base outer portion 467e is attached to the fixing hole 52. When the second lighting device 30e is attached to the lighting fixture 10e, the fixing portion 51 is positioned approximately perpendicular to the base bottom portion 410e, as shown in Figure 56.

The holding portion 53 is formed integrally with the fixed portion 51 and is a plate-like portion that rises from the fixed portion 51. If the plate surface of the fixed portion 51 is assumed to be a plate-like portion extending vertically, the holding portion 53 is a plate-like portion that extends horizontally. When the holding member 50 is attached to the pedestal outer portion 467e, the holding portion 53 faces the base bottom portion 410e, as shown in FIG. 56. The holding portion 53 is inclined relative to the plate surface of the fixed portion 51 so as to approach the fixed portion 51, and it is desirable that the angle between the plate surface of the holding portion 53 and the plate surface of the fixed portion 51 be 90 degrees or less. When the holding member 50 is attached to the pedestal outer portion 467e, the holding portion 53 is inclined so as to approach the base bottom portion 410e.

The holding portion 53 has spring properties and is elastically deformable. As shown in FIG. 56, when the second lighting device 30e is attached to the lighting fixture 10e, the holding portion 53 is arranged to extend in the left-right direction (Y-axis direction) of the lighting device 1. Also, as shown in FIG. 56, the holding portion 53 holds the battery 70. As shown in FIG. 57, when the outer casing 42e is detached from the base portion 45e, the holding portion 53 is allowed to elastically deform, allowing the battery 70 to be attached or detached. Note that, as shown in FIG. 53, when the outer casing 42e is detached from the second base portion 48e, the battery attachment/detachment portion 471e formed on the first base portion 46e is exposed. By removing the first lighting fixture 20 and the outer casing 42e from the lighting fixture 10e, the worker can expose the battery attachment/detachment section 471e in the storage section 18, and the worker can insert or remove the battery 70 from the first base section 46e via the battery attachment/detachment section 471e. For this reason, it is desirable that the fixture side section 111e be formed with a through-hole that communicates with the battery attachment/detachment section 471e when the second lighting fixture 30e is attached to the lighting fixture 10e.

The holding member fastener 54 is a component that fastens the holding member 50 to the base outer portion 467e. The holding member fastener 54 is, for example, a screw or rivet. The holding member fastener 54 is inserted through the fixing hole 52 formed in the fixing portion 51 and the mounting hole 469e formed in the base outer portion 467e.

(Battery 70)
The battery 70 is supported from below by the holding portion 53 of the holding member 50, restricting downward movement of the battery 70. When the first lighting device 20 is removed from the housing 18 and the outer casing 42e is removed from the base 45e, an operator can remove the battery 70 to the side by elastically deforming the holding member 50, as shown in Fig. 57. In Fig. 57, arrow S indicates the direction in which the battery 70, outer casing 42e, or first lighting device 20 is attached to the lighting device 10e, and arrow R indicates the direction in which the battery 70, outer casing 42e, or first lighting device 20 is removed from the lighting device 10e.

<Effects of the lighting device 1, etc.>
The following describes the effects and advantages of the lighting device 1, lighting device 1b, lighting device 1c, lighting device 1d, and lighting device 1e. Note that although the following description will discuss the effects and advantages of lighting device 1, these effects and advantages also apply to lighting device 1b, lighting device 1c, lighting device 1d, and lighting device 1e unless otherwise specified.

As described above, when the first lighting fixture 20 is attached to the lighting fixture 10, the outer casing 42 is arranged on the lighting fixture 10 so as to separate the lens portion 313, which is the second light-emitting portion, from the main portion 220, which is the first light-emitting portion. Therefore, the lighting device 1 can arrange the first lighting fixture 20 and the second lighting fixture 30 side by side in the lighting fixture 10. By arranging the first lighting fixture 20 and the second lighting fixture 30 side by side in the lighting fixture 10, the lighting device 1 can arrange the first lighting fixture 20 and the second lighting fixture 30 side by side in the short direction (Y-axis direction) of the lighting device 1 in a long lighting device 1. As a result, when designing and manufacturing the lighting device 1, it is not necessary to design and manufacture according to length dimensions different from those of general lighting devices and general regular lighting fixtures, and a lighting device 1 equipped with an emergency lighting fixture that is economical and easy to install can be provided. Similarly, when the first illuminator 20 is attached to the lighting fixture 10e, the outer casing 42e is disposed on the lighting fixture 10e such that it separates the lens portion 313, which is the second light-emitting portion, from the main portion 220, which is the first light-emitting portion. Therefore, the first illuminator 20 and the second illuminator 30e can be arranged side by side in the lighting fixture 10e. By arranging the first illuminator 20 and the second illuminator 30e side by side in the lighting fixture 10e, the first illuminator 20 and the second illuminator 30e can be arranged side by side in the short direction (Y-axis direction) of the lighting device 1e in the elongated lighting device 1e. As a result, the lighting device 1e does not need to be designed and manufactured to accommodate length dimensions different from those of general lighting devices and general-purpose lighting fixtures, and a lighting device 1e equipped with an emergency lighting fixture that is economical and easy to install can be provided.

Furthermore, the lighting fixture 10 is formed in an elongated shape, with the first lighting fixture 20 and the second lighting fixture 30 arranged side by side in the short direction (Y-axis direction) of the lighting fixture 10. As a result, when designing and manufacturing the lighting device 1, it is not necessary to design and manufacture according to length dimensions that differ from those of general lighting devices and general regular lighting fixtures, and it is possible to provide a lighting device 1 equipped with an emergency lighting fixture that is economical and easy to install.

Furthermore, the second lighting fixture 30 is positioned outside the storage section 18. Therefore, the worker does not need to remove the second lighting fixture 30 when attaching or detaching the first lighting fixture 20 to or from the lighting fixture 10. As a result, the worker can easily attach and detach the first lighting fixture 20 that is in regular use, making it easier to perform maintenance on the lighting device 1.

The second lighting fixture 30 is also attached to the lighting fixture 10. By attaching the second lighting fixture 30 to the lighting fixture 10, workers can remove the second lighting fixture 30 from the lighting fixture 10 or attach the second lighting fixture 30 to the lighting fixture 10. This allows workers to repair or replace the second lighting fixture 30, making maintenance of the lighting device 1 easier.

Furthermore, the outer casing 42 is formed using a light-blocking material. This allows the lighting device 1 to prevent unnecessary light from leaking from the second lighting device 30. Similarly, the outer casing 42e is formed using a light-blocking material. This allows the lighting device 1e to prevent unnecessary light from leaking from the second lighting device 30e.

The outer casing 42 is also made of a flame-retardant or non-flammable material. This allows the lighting device 1 to prevent problems caused by heat generated by the first lighting fixture 20 from affecting the second lighting fixture 30, and also prevents problems caused by heat generated by the second lighting fixture 30 from affecting the first lighting fixture 20. Similarly, the outer casing 42e is also made of a flame-retardant or non-flammable material. This allows the lighting device 1e to prevent problems caused by heat generated by the first lighting fixture 20 from affecting the second lighting fixture 30e, and also prevents problems caused by heat generated by the second lighting fixture 30e from affecting the first lighting fixture 20.

Furthermore, the outer casing 42 is detachably attached to the second lighting fixture 30, making it easier for workers to perform maintenance on the second lighting fixture 30. Similarly, the outer casing 42e is detachably attached to the second lighting fixture 30e, making it easier for workers to perform maintenance on the second lighting fixture 30e.

The maximum dimension of the second lighting fixture 30 is smaller than the maximum dimension of the first lighting fixture 20. The first direction is the longitudinal direction of the lighting fixture 10, and the second direction is the lateral direction of the lighting fixture 10. Therefore, the lighting device 1 can ensure a sufficient amount of light to illuminate the lighting space when in normal use. Similarly, the maximum dimension of the second lighting fixture 30e is smaller than the maximum dimension of the first lighting fixture 20. The first direction is the longitudinal direction of the lighting fixture 10e, and the second direction is the lateral direction of the lighting fixture 10e. Therefore, the lighting device 1e can ensure a sufficient amount of light to illuminate the lighting space when in normal use.

Furthermore, the first lighting fixture 20 functions as a normal lighting fixture, and the second lighting fixture 30 functions as an emergency lighting fixture. Therefore, the lighting device 1 can provide lighting during normal use when power is being supplied from a commercial power source or the like, and can also provide lighting in emergencies when power is not being supplied from outside the lighting device 1 due to a power outage or the like. Similarly, the first lighting fixture 20 functions as a normal lighting fixture, and the second lighting fixture 30e functions as an emergency lighting fixture. Therefore, the lighting device 1e can provide lighting during normal use when power is being supplied from a commercial power source or the like, and can also provide lighting in emergencies when power is not being supplied from outside the lighting device 1e due to a power outage or the like.

In addition, in the lighting device 1, the first space, the storage section 18, and the second space 45 are separated by the outer casing 42. In the lighting device 1, the air in the first space, whose temperature rises due to the operating heat of the first light source section 21, does not move to the second space 45 because the air is separated by the outer casing 42. Therefore, in the lighting device 1, thermal stress is not applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is less susceptible to the operating heat of the regular lighting fixture. Similarly, in the lighting device 1e, the first space, the storage section 18, and the second space 45 are separated by the outer casing 42e. In the lighting device 1e, the air in the first space, whose temperature rises due to the operating heat of the first light source section 21, does not move to the second space 45 because the air is separated by the outer casing 42e. Therefore, in the lighting device 1e, thermal stress is not applied to the components of the second lighting fixture 30e. As a result, the lighting device 1e's emergency lighting fixtures are less susceptible to the operating heat of regular lighting fixtures.

Furthermore, the outer casing 42 of the lighting device 1 is formed using a light-shielding, heat-conducting material. Therefore, the lighting device 1 can transfer heat from the air in the first space, whose temperature rises due to the operating heat of the first light source unit 21, via the outer casing 42 and dissipate it to the outside of the lighting device 1. Therefore, the lighting device 1 does not apply thermal stress to the components of the second lighting fixture 30. As a result, the lighting device 1 is less susceptible to the operating heat of the regular lighting fixture. Similarly, the lighting device 1e has an outer casing 42e formed using a light-shielding, heat-conducting material. Therefore, the lighting device 1e can transfer heat from the air in the first space, whose temperature rises due to the operating heat of the first light source unit 21, via the outer casing 42e and dissipate it to the outside of the lighting device 1e. Therefore, the lighting device 1e does not apply thermal stress to the components of the second lighting fixture 30e. As a result, the lighting device 1 is less susceptible to the effects of heat generated by the operation of emergency lighting fixtures.

Furthermore, the outer casing 42 functions as a heat transfer path from the first space to the mounting portion 9, or as a heat transfer path from the first space to the illuminated space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Therefore, in the lighting device 1, thermal stress is less likely to be applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is less likely to be affected by the operating heat of the regular lighting fixture. Similarly, the outer casing 42e functions as a heat transfer path from the first space to the mounting portion 9, or as a heat transfer path from the first space to the illuminated space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Therefore, in the lighting device 1e, thermal stress is less likely to be applied to the components of the second lighting fixture 30e. As a result, in the lighting device 1, the emergency lighting fixture is less likely to be affected by the operating heat of the regular lighting fixture.

Furthermore, the outer casing 42 functions as a heat transfer path from the second space 45 to the mounting portion 9, or as a heat transfer path from the second space 45 to the illuminated space illuminated by the first lighting fixture 20 or the second lighting fixture 30. Therefore, in the lighting device 1, heat is easily dissipated from the second space 45 to the outside, and thermal stress is unlikely to be applied to the components of the second lighting fixture 30. As a result, in the lighting device 1, the emergency lighting fixture is less susceptible to the operating heat of the regular lighting fixture. Similarly, the outer casing 42e functions as a heat transfer path from the second space 45 to the mounting portion 9, or as a heat transfer path from the second space 45 to the illuminated space illuminated by the first lighting fixture 20 or the second lighting fixture 30e. Therefore, in the lighting device 1e, heat is easily dissipated from the second space 45 to the outside, and thermal stress is unlikely to be applied to the components of the second lighting fixture 30e. As a result, the lighting device 1e's emergency lighting fixtures are less susceptible to the operating heat of regular lighting fixtures.

When the battery 70 is placed inside the housing 40 of the lighting device 1, it abuts against the inner surface of the housing 40 and is held within the second space 45 by the holding member 50 attached to the housing 40. When the outer casing 42 is attached to the base 44, the holding member 50 has a narrower range of movement than when the outer casing 42 is not attached to the base 44. Therefore, when the outer casing 42 is attached to the base 44, the battery 70 is securely held by the holding member 50. As a result, the lighting device 1 has a simple configuration yet can securely hold the battery 70, which serves as an emergency power source.

Furthermore, when the outer casing 42 is not attached to the base 44, the holding member 50 elastically deforms within a movable range that allows the battery 70 to be attached and detached. When the outer casing 42 is detached from the base 41, the holding portion 53 is allowed to elastically deform, allowing the worker to easily attach or detach the battery 70 to or from the lighting device 1.

The outer casing 42 is formed in a box shape, and has a light-transmitting section 423, which is a through-hole, formed in a position facing the lens section 313, which is the second light-emitting section. Therefore, the outer casing 42 can expose the second light-emitting section housed inside, and can form the outer casing of the second lighting device 30.

Furthermore, the base 44 has an opening 44a formed at the position where the battery 70 is to be placed. When the outer casing 42 is attached to the base 44, at least a portion of the opening 44a is covered by the outer casing 42. The opening 44a can be exposed by removing the outer casing 42 that covers the opening 44a, allowing an operator to easily attach or detach the battery 70 to or from the lighting device 1 through the opening 44a. Similarly, the base 45e has a battery attachment/detachment portion 471e formed at the position where the battery 70 is to be placed. When the outer casing 42e is attached to the base 45e, at least a portion of the battery attachment/detachment portion 471e is covered by the outer casing 42e. The battery attachment/detachment portion 471e can be exposed by removing the outer casing 42e that covers the battery attachment/detachment portion 471e, allowing an operator to easily attach or detach the battery 70 to or from the lighting device 1 through the battery attachment/detachment portion 471e.

The above describes embodiments and variations of the present invention, but these embodiments and variations may be implemented in combination. Alternatively, one of these embodiments and variations may be implemented in part. Alternatively, these embodiments and variations may be implemented in part in combination. Note that the present invention is not limited to these embodiments and variations, and various modifications are possible as needed.

Reference Signs List 1 lighting device, 1b lighting device, 1c lighting device, 1d lighting device, 1e lighting device, 9 attached part, 10 lighting fixture, 10b lighting fixture, 10c lighting fixture, 10d lighting fixture, 10e lighting fixture, 11 fixture main body, 11b fixture main body, 11c fixture main body, 11d fixture main body, 11e fixture main body, 12 Instrument end, 12b Instrument end, 12c Instrument end, 12d Instrument end, 12e Instrument end, 13 Instrument side connector, 14 Instrument side terminal block, 15 Instrument side fixture, 16 Instrument side power line, 18 Accommodation section, 20 First lighting fixture, 21 First light source section, 22 First transparent section, 23 Power supply section, 24 Support section, 30 Second lighting fixture, 30a Second lighting fixture, 30e Second lighting fixture, 31 Second light source section, 34 Control unit, 36 Operation unit, 38 Insulation unit, 40 Housing unit, 40a Housing unit, 40e Housing unit, 41 Base, 41e Base, 42 Outer shell unit, 42a Opening, 42e Outer shell unit, 44 Pedestal unit, 44a Opening, 45 Second space, 45e Pedestal unit, 46e First pedestal unit, 46e1 Opening, 48e Second pedestal unit, 50 Holding member, 51 Fixing unit, 52 Fixing hole, 53 Holding unit, 53a Holding unit, 53b Side wall fixing unit, 53b1 Side wall fixing unit, 53c Holding bent unit, 53c1 First inclined unit, 53c2 Second inclined unit, 54 Holding member fixing device, 60 Hanging cord, 70 Battery, 70a Battery, 80 Second lighting device fixing device, 110 Fixture bottom, 110e bottom of appliance, 111 appliance side, 111d appliance side, 111e appliance side, 112 wire passage hole, 113 screw hole, 114 appliance inclined portion, 114b appliance inclined portion, 114d appliance inclined portion, 114e appliance inclined portion, 115 appliance penetration portion, 115b appliance penetration portion, 115d appliance penetration portion, 115e appliance penetration portion, 116e first penetration portion, 117 appliance side edge portion, 117b appliance side edge portion, 117c appliance side edge portion, 117d appliance side edge portion, 117e appliance side edge portion, 118e second penetration portion, 120 end plate, 120b end plate, 120c end plate, 121 knockout portion, 121c knockout portion, 160 electric wire portion, 161 connector, 210 First light source substrate, 211 First light source element, 220 Main portion, 221 Mounting portion, 222 First incident portion, 223 First emission portion, 226 Lid portion, 230 Case, 240 Base portion, 241 Standing portion, 242 Power supply unit arrangement portion, 310 Second light source substrate, 311 Second light emitting element, 312 Second light transmitting portion, 313 Lens portion, 314 Second incident portion, 315 Second emission portion, 316 Mounting portion, 317 Holding portion, 317e Holding portion, 318 Main holding portion, 318a Side wall, 318e Main holding portion, 319 Lens holding portion, 320 Holding protrusion, 321 Mounting guide, 322 Through hole, 323 Main portion screw hole, 324 Sub-holding portion, 324e Sub-holding portion, 325 Sub-portion screw hole, 326 Connection portion, 327: second light source unit fixing device, 340: control circuit board, 341: control circuit components, 342: case, 343: first case, 343a: case bottom wall, 343b: case side wall, 344: screw hole, 345: second case, 346: control unit fixing device, 360: operation surface portion, 361: operation button, 362: indicator light, 363: operation unit fixing device, 380: insulating unit screw hole, 410: base bottom portion, 410e: base bottom portion, 411: holding member fixing portion, 412: screw hole, 413: mounting hole, 414: base side portion, 414e: base side portion, 415: base protrusion portion, 415e: base protrusion portion, 416: screw hole, 416e: screw hole, 420: outer shell main portion, 420a: outer surface, 420e Outer casing main portion, 421: second light-transmitting member arrangement portion, 421e: second light-transmitting member arrangement portion, 422: step portion, 422e: step portion, 423: light-transmitting member through-portion, 423e: light-transmitting member through-portion, 424: screw hole, 424e: screw hole, 425: operation portion arrangement portion, 426: operation through-portion, 427: outer casing long side portion, 427e: outer casing long side portion, 428: outer casing outer portion, 428e: outer casing outer portion, 429: outer casing inner portion, 429e: outer casing inner portion, 430: notch portion, 431: outer casing short side portion, 431e: outer casing short side portion, 432: outer casing fixing device, 434: nut, 440: second light source unit attachment portion, 441: screw hole, 442: screw hole, 443: operation unit attachment portion, 444 Screw hole, 445 Control unit attachment portion, 446 Screw hole, 447 Connecting portion, 460e Base main portion, 461e Operation unit attachment portion, 462e Operation unit penetration portion, 463e Screw hole, 464e Control unit attachment portion, 465e Screw hole, 466e Base long side portion, 467e Base outer portion, 468e Holding member fixing portion, 469e Mounting hole, 470e Base inner portion, 471e Battery attachment/detachment portion, 472e Side electric wire insertion hole, 473e First base protrusion portion, 474e Screw hole, 475e Base short side portion, 480e Second light source unit attachment portion, 481e Screw hole, 482e Screw hole, 483e Base fixing portion, 484e Screw hole, 485 Connecting portion, 485e Connecting portion, 486: Base side portion, 486e: Base side portion, 487e: Second base fixing device, 488e: Main portion mounting opening, 489e: Side mounting opening, 490e: Main portion electric wire insertion hole.

Claims (1)

a first lighting fixture having an elongated shape;
a second lighting device arranged next to the first lighting device in a short-side direction, the second lighting device having an emergency light source unit, a lens unit covering the emergency light source unit, and an outer casing unit accommodating the emergency light source unit and the lens unit, the length of the second lighting device in the longitudinal direction of the first lighting device being shorter than the length of the first lighting device;
Equipped with
The outer shell portion is
an outer main portion having a light transmitting portion through which the lens portion is exposed;
an outer shell inner portion extending along the longitudinal direction;
an outer short side portion that is disposed opposite the lens portion in the longitudinal direction and separates the first lighting device from the lens portion;
and
The outer shell inner part is
In a cross section of the first lighting fixture and the second lighting fixture perpendicular to the longitudinal direction, a lighting device is arranged between the first lighting fixture and the lens portion in the short direction, which is perpendicular to the direction in which the outer casing inner portion extends, and separates the first lighting fixture and the lens portion .