JP7833702B2 - Lighting fixtures - Google Patents

Description

This disclosure relates to a lighting fixture, and more particularly to a lighting fixture having a light source unit and a functional unit.

As a conventional example, the lighting device described in Patent Document 1 is exemplified. The lighting device described in Patent Document 1 (hereinafter referred to as the conventional example) comprises a first luminaire having an emergency light source, two second luminaires having normal light sources, and a housing to which the first luminaire and the two second luminaires are mounted. The housing has a reflector and is mounted so as to be embedded in an opening provided in the ceiling or the like. The first luminaire is positioned approximately in the center of the elongated housing. Each of the two second luminaires is positioned at both ends in the longitudinal direction of the housing, flanking the first luminaire.

Japanese Patent Publication No. 2020-173924

Incidentally, in the conventional example described above, the internal space of the housing is almost entirely occupied by the first luminaire and the two second luminaires. Therefore, for example, when wiring multiple lighting devices (lighting fixtures), it was not possible to house the wiring wires within the housing (the fixture body).

The purpose of this disclosure is to provide a lighting fixture that can accommodate wiring for daisy-chaining within the fixture body.

A lighting fixture according to one aspect of the present disclosure comprises a long fixture body inserted into a recess provided in the ceiling , and a unit attached to the fixture body. The fixture body has a main body formed in the shape of a long plate and attached to a building member, and a pair of side walls facing each other in the short direction of the main body. A part of the unit is configured to be housed in a housing recess surrounded by the main body and the pair of side walls. The part of the unit housed in the housing recess forms a predetermined space between itself and the main body. The predetermined space can accommodate a power cable pulled into the housing recess. The housing recess is open at both ends in the longitudinal direction of the fixture body, leaving the predetermined space open.

The lighting fixture described herein has the advantage of allowing the wiring for daisy-chaining to be housed within the fixture body.

Figure 1 is a perspective view from below of a lighting fixture according to an embodiment of this disclosure. Figure 2 is an exploded perspective view of the same lighting fixture. Figure 3 is a right side view of the same lighting fixture. Figure 4 is a left side view of the same lighting fixture. Figure 5 is an exploded perspective view of the emergency light source block and battery block in the same lighting fixture during assembly. Figure 6 is a perspective view of the same lighting fixture with the light source unit, battery block, and cover removed. Figure 7 is a top view of the support member in the same lighting fixture. Figure 8 is a bottom view of the support member in the same lighting fixture. Figure 9 is a front view of the support member in the same lighting fixture. Figure 10 is a rear view of the support member in the same lighting fixture. Figure 11 is a left side view of the support member in the same lighting fixture. Figure 12 is a right side view of the support member in the same lighting fixture. Figure 13 is a perspective view of the main part of the same lighting fixture, seen from an oblique angle above. Figure 14 is a front view of the emergency light source unit and support member in the same lighting fixture, during the process of attaching the battery block. Figure 15 is a front view of the emergency light source unit and support member in the same lighting fixture with the battery block attached. Figure 16 is a bottom view of the main parts of the same lighting fixture with the battery block and light source unit removed. Figure 17 is a bottom view of the main part of the same lighting fixture with the light source unit removed and the battery block installed. Figure 18 is a bottom view of the main part of the same lighting fixture with the light source unit removed. Figure 19 is a bottom view of modification 1 of the same lighting fixture. Figure 20 is a bottom view of a modified example 2 of the same lighting fixture. Figure 21 is a partially omitted left side view of the same lighting fixture as above, modified example 3. Figure 22 is a partially omitted left side view of the modified example 4 of the same lighting fixture.

The lighting fixtures according to the embodiments of this disclosure will be described in detail below with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

(1) Overview of the lighting fixture according to the embodiment The lighting fixture A1 according to the embodiment comprises a long fixture body 1, one or more light source units 2 that are detachably attached to the fixture body 1, and a functional unit that is arranged adjacent to the light source units 2 along the longitudinal direction of the fixture body 1 (see Figure 1). The lighting fixture A1 according to the embodiment comprises a support member 6 that supports the functional unit (see Figure 2).

The functional unit is, for example, an emergency light source unit for providing emergency lighting (also called emergency lighting) during a power outage. However, the functional unit may also be a sensor unit for detecting the presence of people, ambient brightness, etc., and flashing/dimming the light source unit 2, or a switch unit with a pull-cord switch for switching the flashing of the light source unit 2. Alternatively, the functional unit may be a wireless communication unit for flashing/dimming the light source unit 2 via wireless communication such as Wi-Fi (registered trademark) and Bluetooth (registered trademark), an air purification unit for purifying the air in the illuminated space, or a speaker unit for outputting music, etc.

The fixture body 1 comprises a main body 10 and a pair of side wall portions 11. The main body 10 is formed in a long, plate-like shape and is attached to a construction member (suspension bolt 90). The pair of side wall portions 11 face each other in the short direction of the main body 10. The fixture body 1 is configured to house a part of the light source unit 2 and a part of the functional unit in a housing recess 12 surrounded by the main body 10 and the pair of side wall portions 11.

The support member 6 has a fixing portion 7 that is fixed to the main body 1 of the device, and a mounting portion 8 to which the functional unit is attached. The support member 6 is housed in the housing recess 12 so as to form a predetermined space (wiring space S1) between the main body 10 and the mounting portion 8.

Here, to supply power to the light source unit 2 and the functional unit, the power cable 91 of the indoor wiring is routed into the housing recess 12 of the fixture body 1. The power cable 91 routed into the housing recess 12 can be housed in a predetermined space (wiring space S1) formed between the support member 6, the main body 10, and the mounting portion 8. However, the lighting fixture A1 according to this embodiment is not usually installed individually; rather, multiple lighting fixtures A1 are often installed side-by-side in the longitudinal direction. These multiple lighting fixtures A1 are then connected to each other by the daisy-chain wiring of the power cable 91.

Therefore, the lighting fixture A1 according to this embodiment can house the wiring wires (power cables 91) for feed-through wiring inside the fixture body 1. As a result, the lighting fixture A1 according to this embodiment can improve the work efficiency of installation compared to the case where the wiring wires (power cables 91) for feed-through wiring are routed outside the fixture body 1.

(2) Details of the lighting fixture according to the embodiment The lighting fixture A1 according to the embodiment (hereinafter abbreviated as lighting fixture A1) comprises a fixture body 1, a light source unit 2, an emergency light source unit 3 corresponding to a functional unit, and a support member 6, as shown in Figures 1 and 2. In the following description, unless otherwise specified, the up and down, front and back, and left and right directions indicated by arrows in Figure 1 are defined as the up and down, front and back, and left and right directions of lighting fixture A1.

(2-1) Light source unit The light source unit 2 comprises a regular light source, a mounting member 21 to which the regular light source is attached, a light-transmitting cover 20 that covers the regular light source, and a power supply device 22 that lights up the regular light source (see Figures 1 to 3).

The standard light source consists of a long substrate and numerous LEDs (light-emitting diodes) mounted on its surface. The mounting member 21 is formed from a metal material in a long, trough-like shape. The mounting member 21 has a long, rectangular base plate and a pair of side plates 210 rising upward from both ends of the base plate in the short-side direction (front-to-back direction) (see Figure 2). The standard light source is attached to the underside of the base plate of the mounting member 21. The mounting member 21 also has a pair of hook fittings 211 (see Figure 2) protruding from one end (rear end) in the width direction near both ends in the longitudinal direction (left-to-right direction), and a hook spring 212 (see Figure 3) positioned at the other end (front end) in the width direction.

The power supply unit 22 is configured to convert AC power supplied from the regular power source (e.g., the commercial power grid) via the terminal block 23 (see Figures 2 and 3) into DC power. The power supply unit 22 is mounted on the upper surface of the bottom plate of the mounting member 21. The regular light source and the power supply unit 22 are electrically connected, for example, by a wire inserted through a through-hole provided in the bottom plate. The regular light source lights up when DC power is supplied from the power supply unit 22 via the wire.

The light-transmitting cover 20 is formed in the shape of a long box with an open top surface, using a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin. The bottom surface of the light-transmitting cover 20 is formed in a curved shape that projects gently downward from both ends toward the center in the short-side direction (front-to-back direction) (see Figure 1). A diffusing material is mixed into the synthetic resin material that forms the light-transmitting cover 20. That is, light emitted from the normal light source is diffused when it passes through the light-transmitting cover 20.

The light source unit 2, excluding the light-transmitting cover 20 (such as the pair of side plates 210 of the mounting member 21 and the power supply unit 22), is housed in the housing recess 12 of the fixture body 1. The light-transmitting cover 20 protrudes from the opening of the housing recess 12 of the fixture body 1, allowing it to be detachably attached to the fixture body 1.

(2-2) Emergency light source unit The emergency light source unit 3 includes an emergency light source block 4, a battery block 5, and a cover 30 (see Figures 2 and 5).

The emergency light source block 4 comprises an emergency light source consisting of LEDs, a lens 40 that controls the light distribution of the emergency light source, and a lighting circuit that illuminates the emergency light source using power supplied from the battery block 5. Furthermore, the emergency light source block 4 includes a charging circuit that charges the battery block 5 with AC power supplied from the normal power source, a control circuit that controls the lighting circuit and charging circuit for inspection, and a housing 41 that houses the lighting circuit, charging circuit, and control circuit. Additionally, the emergency light source block 4 includes a heat sink 42, a receptacle connector 43 for connecting the lighting circuit, charging circuit, and control circuit to the battery block 5, and wires 44 (see Figure 6) connected to the normal power source via a terminal block 23.

The housing 41 is formed in a box shape from a synthetic resin material. The heat sink 42 is formed in a C-shape from a metal plate such as an aluminum plate. The heat sink 42 is attached to the housing 41 so as to cover the bottom surface, both front and rear sides, and a portion of the top surface of the housing 41. An emergency light source and lens 40 are attached to the bottom surface of the heat sink 42 (see Figure 6).

The receptacle connector 43 is positioned at the bottom of a recess 410 located at the front right corner of the housing 41 (see Figure 6). The recess 410 is recessed upwards from the bottom surface of the housing 41. Furthermore, a vertical groove 411 connected to the recess 410 is provided at the rightmost end of the front of the housing 41 (see Figure 5).

The battery block 5 comprises multiple batteries (for example, five) and a battery case 50 that houses these batteries. Each battery is a dry-cell type rechargeable battery (storage battery), such as a nickel-metal hydride battery.

The battery case 50 has a first case section 51, a second case section 52, a projection 53, a connector section 54, a projection 55, etc. (see Figures 2 and 5). The first case section 51 is formed in a rectangular parallelepiped shape, with its vertical height shorter than its front-to-back and left-to-right lengths. Four batteries are housed inside the first case section 51. The second case section 52 protrudes downward from the left end of the lower surface of the first case section 51. The interior of the second case section 52 is connected to the interior of the first case section 51. The remaining battery is housed inside the second case section 52. These five batteries are electrically connected in series by multiple conductive plates.

The projection 53 is formed in a rectangular parallelepiped shape and protrudes to the right from the rear end on the right side of the first case portion 51 (see Figure 2). The length of the projection 53 in the front-to-back direction is shorter than the length of the first case portion 51 in the front-to-back direction.

The connector section 54 is located at the front left end of the second case section 52. The connector section 54 contains five batteries and a pair of contacts connected in series. The connector section 54 is removably connected to the receptacle connector 43 of the emergency light source block 4.

The projection 55 is formed in an L-shape when viewed from the left or right direction. The projection 55 is formed to protrude upward from the left side of the connector portion 54 (see Figure 5).

The cover 30 comprises a first cover 31 and a second cover 32 (see Figure 2). The first cover 31 and the second cover 32 are integrally formed from a metal such as aluminum.

The first cover 31 is formed in a box shape with an open top. The bottom surface of the first cover 31, similar to the light-transmitting cover 20 of the light source unit 2, is formed in a curved shape that gently protrudes downward from both ends toward the center in the short-side direction (front-to-back direction). An elliptical recess 310 is provided in the center of the bottom surface of the first cover 31, with a hole 311 opening in the center of the recess 310. The hole 311 is shaped and sized to allow a portion of the lens 40 of the emergency light source block 4 to pass through (see Figure 1).

The first cover 31 has two hook springs 312 at its upper left end (see Figure 4). The hook springs 312 are L-shaped when viewed from the front-to-back direction. Furthermore, the hook springs 312 are configured to incline upward as they approach their tip (left end).

As shown in Figure 2, the second cover 32 has a flat portion 320, an arm portion 321, and a fixing portion 322. The flat portion 320 is formed in an approximately rectangular plate shape. The flat portion 320 is connected to the first cover 31 at its left end. The arm portion 321 is also formed in an approximately rectangular plate shape. The arm portion 321 is configured to rise upward from the front end of the right end of the flat portion 320. The fixing portion 322 is also formed in an approximately rectangular plate shape. The fixing portion 322 is configured to protrude to the right from the upper end of the arm portion 321. Furthermore, the fixing portion 322 has a circular insertion hole at its front right corner.

The cover 30 is configured such that the first cover 31 covers the emergency light source block 4 and a portion of the battery block 5 (the second case portion 52) from below, and the second cover 32 covers the remaining portion of the battery block 5 (the first case portion 51) from below. The lens 40 of the emergency light source block 4 protrudes below the first cover 31 through the hole 311 in the first cover 31 (see Figure 18).

(2-3) Fixture Body The fixture body 1 has a main body 10 formed in the shape of a long plate and attached to a building member (suspension bolt 90), and a pair of side wall portions 11 facing each other in the short direction of the main body 10 (see Figures 1 and 2). The fixture body 1 also has a pair of reflectors 13, a pair of end plates 14, and a frame portion 15.

The main body 10 comprises a long, rectangular base plate 100 and a pair of side plates 101 that are bent downward from both ends (front and rear) along the longitudinal direction of the base plate 100 (see Figure 3).

The base plate 100 has two through holes 102 and one power supply hole 103. The two through holes 102 are circular holes located near both ends of the base plate 100 in the longitudinal direction (left-right direction). A suspension bolt 90, which is a structural member, is inserted through each through hole 102 (see Figure 2).

The power supply hole 103 is a circular hole located in the center of the longitudinal direction of the base plate 100. A power cable 91 connected to the regular power supply is routed through the power supply hole 103 (see Figure 3). The power cable 91 is, for example, a three-core VVF (vinyl insulated vinyl sheathed flat) cable.

Two terminal blocks 23 are mounted on the underside of the base plate 100, between the power supply hole 103 and the right-side insertion hole 102 (see Figures 2 and 3). A power cable 91 and an intermediate cable are connected to one of the terminal blocks 23. The power supply unit 22 is connected to the power cable 91 via the intermediate cable and the terminal block 23. The wires 44 of the emergency light source block 4 are connected to the other terminal block 23. Note that the power cables 91 for the daisy-chain wiring, described later, are also connected to these terminal blocks 23.

Each of the pair of side plates 101 has a U-shaped support portion 104 integrally provided at its lower end (see Figure 3). Furthermore, each of the pair of side plates 101 is bent in a stepped manner along its longitudinal direction (left-right direction).

Each pair of side wall sections 11 is integrally formed with the reflector 13. Each reflector 13 is formed as a long rectangular plate with one surface (bottom surface) as the reflective surface. Each side wall section 11 is a long rectangular plate and is integrally formed with the reflector 13, rising from one end edge (upper edge) along the longitudinal direction (left-right direction) of the reflector 13. Furthermore, a protruding wall section 110 is provided at the upper end of each side wall section 11. The protruding wall section 110 is a long rectangular plate and projects from the leading edge (upper edge) along the longitudinal direction of the side wall section 11 in a direction opposite to the reflector 13 (see Figure 3). The tip of the protruding wall section 110 is bent downwards and in a hook shape along the longitudinal direction.

Each of the pair of end plates 14 is formed in a trapezoidal shape (see Figure 3). These pair of end plates 14 are joined one by one to the longitudinal ends of the pair of reflectors 13 by an appropriate method such as spot welding.

The frame portion 15 is formed in a rectangular frame shape when viewed from above or below. However, it is preferable that the frame portion 15 is formed integrally with the pair of reflectors 13 and the pair of end plates 14.

Furthermore, when the pair of reflectors 13 are connected to the integrated end plate 14, the pair of side wall portions 11 face each other at a predetermined distance in the short-side direction (front-to-back direction) of the reflectors 13 (see Figure 3).

The main body 10 and the pair of side wall portions 11 are joined as follows. First, the pair of protruding wall portions 110 are inserted into the inside of the pair of support portions 104 from one end of the main body 10 in the longitudinal direction. Then, the main body 10 is moved parallel to the pair of side wall portions 11 along the longitudinal direction of the side wall portions 11. Here, each side wall portion 11 has a cut-out piece at both ends in the longitudinal direction. On the other hand, each protruding wall portion 110 has a notch at its tip. Then, the cut-out pieces of each side wall portion 11 are crimped into the notches of each protruding wall portion 110, thereby joining the main body 10 and the pair of side wall portions 11 via the pair of protruding wall portions 110.

The main body 10 and the pair of side wall portions 11 are joined together to form a receiving recess 12 surrounded by the main body 10 and the pair of side wall portions 11 (see Figures 2-4 and 6). However, the receiving recess 12 is open at both ends (left and right ends) in the longitudinal direction of the device body 1.

(2-4) Support Member Next, the support member 6 will be described with reference to Figures 7 to 15.

The support member 6 has a fixing portion 7 that is fixed to the main body of the device 1, and a mounting portion 8 to which the emergency light source unit 3 is attached.

The mounting section 8 includes a mounting plate 80 to which the emergency light source block 4 is attached, a support plate 81 that detachably supports the battery block 5, and an opening 82 positioned between the mounting plate 80 and the support plate 81 (see Figures 7 and 8).

The mounting plate 80 is formed in a rectangular, flat shape (see Figures 7 and 8). A rectangular vertical piece 800 is integrally provided on the mounting plate 80 (see Figures 8 to 11). The vertical piece 800 protrudes downward from the left end of the mounting plate 80 (see Figure 9). One circular hole 801 penetrates each of the front and rear ends of the mounting plate 80 at its center in the left-right direction (see Figures 7 and 8). One screw is inserted through each of these two holes 801. The emergency light source block 4 is then attached to the underside of the mounting plate 80 by screwing these screws into screw holes provided in the heat sink 42 (see Figure 14). The emergency light source block 4 is attached to the mounting plate 80 with a slight overhang from the end opposite the vertical piece 800 (right end) (see Figure 14).

The support plate 81 is formed in an L-shaped flat plate form when viewed from above (see Figures 7 and 8). A hook portion 810 is provided at the tip (rear end) of the narrower part of the support plate 81 in the left-right direction (see Figures 8 to 10 and 12). The hook portion 810 has a main piece 8100, a first hook piece 8101, and a second hook piece 8102. The main piece 8100, the first hook piece 8101, and the second hook piece 8102 are each formed in a rectangular flat plate form (see Figures 8, 9, and 12). The main piece 8100 protrudes downward from the tip (rear end) of the support plate 81 (see Figures 9 and 10). The first hook piece 8101 protrudes to the left from the tip (lower end) of the main piece 8100 and faces the support plate 81 in the vertical direction (see Figures 9 and 10). The second hook piece 8102 protrudes to the left from the front edge of the first hook piece 8101 (see Figures 8 to 10). On the support plate 81, a female threaded portion 811 is provided at the tip (right end) of the wider portion in the left-right direction (see Figures 7 and 8).

The opening 82 is rectangular in shape when viewed from above and below, and is positioned between the mounting plate 80 and the support plate 81 (see Figures 7 and 8). The width of the opening 82 along the shorter side (front-to-back direction) of the fixture body 1 is approximately equal to the distance between the pair of side wall portions 11. However, the shape of the opening 82 is not limited to a rectangle; for example, it may be a polygon with five or more sides, a circle, an ellipse, etc. The end of the support plate 81 facing the opening 82 (the left end) is folded upwards (see Figures 7 and 13).

The battery block 5 is supported by the support plate 81 of the support member 6 in the following procedure. First, with the battery block 5 tilted relative to the support plate 81, the protrusion 53 provided on the battery case 50 of the battery block 5 is hooked onto the hook portion 810 provided on the support plate 81 of the support member 6 (see Figure 14).

Next, the battery block 5 is rotated using the projection 53, which is hooked onto the hook portion 810, as a pivot point (see Figure 5). Then, the projection 55 of the battery block 5 is inserted into the vertical groove 411 provided in the housing 41 of the emergency light source block 4, and the connector portion 54 of the battery block 5 is connected to the receptacle connector 43 (see Figure 15). In this way, the battery block 5 is supported by the support plate 81 of the support member 6, and the connector portion 54 and the receptacle connector 43 are connected (see Figure 15). Note that while the battery block 5 is supported by the support plate 81, the opening 82 of the support member 6 is closed by the battery block 5 (Figure 17).

The fixing portion 7 has a pair of side plates 70 and a pair of fixing pieces 71 (see Figures 7 to 10). Each of the pair of side plates 70 is formed in the shape of a rectangular flat plate. One of the side plates 70 protrudes upward from the front end of the mounting portion 8 (mounting plate 80 and support plate 81) (see Figure 9).
The other side plate 70 protrudes upward from the rear end of the mounting portion 8 (mounting plate 80 and support plate 81) (see Figure 10).

Each fixing piece 71 is formed in a rectangular, flat shape (see Figure 7). One fixing piece 71 protrudes forward from the upper end of the front side plate 70. The other fixing piece 71 protrudes backward from the upper end of the rear side plate 70. A circular hole 710 is provided at one end (left end) in the longitudinal direction of each pair of fixing pieces 71 (see Figure 7).

Furthermore, one locking piece 72 is provided at each longitudinal end (left and right end) of each fixing piece 71 (see Figures 9 and 10). These four locking pieces 72 are hook-shaped and protrude downward from the edges of the fixing piece 71 along its longitudinal direction (left-right direction).

The fixing portion 7 of the support member 6 is fixed to a pair of side wall portions 11 of the fixture body 1. Specifically, a pair of fixing pieces 71 of the fixing portion 7 are fixed one by one to the protruding wall portions 110 of the pair of side wall portions 11 of the fixture body 1.

A pair of locking pieces 72, each provided on a fixing piece 71, are locked one by one to the edges of a pair of holes 111 located at the left end of the protruding wall portion 110. In this state, a screw 74, inserted through the hole 710 of the fixing piece 71, is screwed into a screw hole in the protruding wall portion 110, thereby fixing the fixing piece 71 to the protruding wall portion 110 (see Figure 13). The hole 710 through which the screw 74 is inserted is positioned so that, when viewed from the short side (front-to-back direction) of the fixing piece 71, the optical axis L1 of the lens 40 and the screw 74 coincide (see Figure 15).

Here, with the support member 6 fixed to the fixture body 1 (a pair of side wall portions 11), the opening 82 of the support member 6 overlaps vertically with the insertion hole 102 located at the left end of the main body 10 of the fixture body 1 (see Figure 15). The opening 82 is sized to allow for the tightening of a nut 92 onto a suspension bolt 90 inserted through the insertion hole 102.

The support member 6 is then housed in the receiving recess 12 such that it forms a predetermined space (wiring space S1) between the main body 10 and the mounting portion 8 (see Figure 4). Preferably, the wiring space S1 is large enough to accommodate at least two power cables 91.

Here, the wire 44 for connecting the emergency light source block 4 to the normal power supply is routed through the opening 82 of the support member 6 into the wiring space S1 (see Figure 6). This prevents the wire 44 from being pinched between the battery block 5 and the support plate 81 when the battery block 5 is attached to the support plate 81. The wire 44 is supported by multiple cable holders 45 attached to the side wall 11 and the main body 10 (see Figure 6).

(3) Installation procedure of lighting fixture according to the embodiment Next, the installation procedure of lighting fixture A1 will be described.

First, the worker performing the installation removes the light source unit 2, battery block 5, and cover 30 from the lighting fixture A1. Then, the worker inserts the power cable 91, which is pre-wired in the ceiling space, into the power hole 103 of the main body 10, and then inserts the fixture body 1 into the recessed hole X10 provided in the ceiling X1. At this time, the worker inserts the two suspension bolts 90 located in the recessed hole X10 into the two through holes 102 provided in the main body 10, one bolt at a time (see Figure 2). Then, the worker tightens nuts 92 on the suspension bolts 90 inserted into the through holes 102 via washers 93 (see Figure 16). At this time, the worker can reach their hand through the opening 82 of the support member 6 of the emergency light source unit 3 and tighten the nuts 92. Note that the end of the support plate 81 facing the opening 82 (the left end) is folded upward, so the possibility of the worker's hand touching the edge of the support plate 81 and getting injured is reduced. Similarly, since the emergency light source block 4 is attached to the mounting plate 80 with the vertical piece 800 slightly protruding from the opposite end (right end) of the mounting plate 80, the possibility of a worker's hand touching the edge of the mounting plate 80 and getting injured is reduced.

In this way, the fixture body 1 is fixed to the two suspension bolts 90. Furthermore, the frame portion 15 of the fixture body 1 abuts against the periphery of the mounting hole X10 in the ceiling X1, thereby blocking the mounting hole X10 with the fixture body 1.

Next, the worker connects the power cable 91, which was pulled in through the power hole 103, to the terminal block 23. Furthermore, the worker connects the power cable 91 for daisy-chaining to the terminal block 23. The worker then houses the two power cables 91 in the wiring space S1 of the housing recess 12 of the fixture body 1 (see Figures 3 and 4), and pulls the power cable 91 for daisy-chaining out of the fixture body 1 from one end in the longitudinal direction of the housing recess 12, and houses it in the housing recess 12 of the fixture body 1 of another lighting fixture A1.

Next, the worker supports the battery block 5 on the support plate 81 of the support member 6 using the procedure described in "(2-4) Support Member" (see Figures 14 and 15). Then, the worker attaches the cover 30 to the device body 1. The worker inserts the pair of hook springs 312 of the first cover 31 into the gap between the upper end of the left end plate 14 and the left end of the emergency light source block 4. The pair of hook springs 312 are hooked onto the projection that protrudes to the right from the upper end of the left end plate 14 of the device body 1 (see Figure 4).

Next, the worker places the fixing portion 322 of the second cover 32 onto the female threaded portion 811 of the support plate 81 from below. Then, the worker attaches the cover 30 to the device body 1 and support member 6 by screwing the screw 323, which is inserted through the insertion hole in the fixing portion 322, into the female threaded portion 811 of the support plate 81. Note that multiple protrusions are formed on the upper surface of the flat portion 320 of the cover 30 (the surface facing the battery block 5). These multiple protrusions contact the lower surface of the first case portion 51 of the battery case 50, allowing the cover 30 to suppress rattling of the battery block 5.

Next, the worker attaches the light source unit 2 to the fixture body 1. First, the worker temporarily suspends the light source unit 2 from the fixture body 1 by hooking the pair of hooking brackets 211 into the square holes 112 (see Figure 2) located on the rear side wall 11 of the fixture body 1. With the light source unit 2 temporarily suspended from the fixture body 1, the worker connects the power connector connected to the terminal block 23 to the power supply unit 22 of the light source unit 2.

Next, the worker hooks the light source unit 2's spring 212 (see Figure 3) onto the receiving bracket 16 (see Figure 2) located on the front side wall 11 of the fixture body 1. Finally, the worker rotates the light source unit 2, using the spring 211 as a pivot point to lift it. As a result, the spring 212 returns to its original position while remaining hooked onto the receiving bracket 16, and the spring force of the spring 212 holds the light source unit 2 to the fixture body 1 (see Figures 1 and 3).

The lighting fixture A1 is installed on ceiling X1 using the procedure described above.

(4) Modified Examples Hereinafter, several modified examples of the lighting fixture A1 according to this embodiment will be described. However, since the basic configuration of each modified example described below is the same as the basic configuration of the lighting fixture A1 according to this embodiment, the same reference numerals are used for common components and their illustration and description are omitted.

(4-1) Modification example 1
The lighting fixture A1 of the modified example 1 differs from the embodiment in that, as shown in Figure 19, it has two light source units 2 and an emergency light source unit 3 is positioned between the two light source units 2.

Each of the two light source units 2 has approximately half the length (longitudinal dimension) of the light source unit 2 in the lighting fixture A1 according to this embodiment. These two light source units 2 are attached to the fixture body 1, positioned towards both ends of the fixture body 1 in the longitudinal direction.

The emergency light source unit 3 is positioned between the two light source units 2, that is, in the center of the longitudinal direction of the fixture body 1. In this case, the opening 82 of the support member 6 that supports the emergency light source unit 3 faces the power supply hole 103 provided in the center of the main body 10.

However, even in the lighting fixture A1 of the modified example 1, the power cable 91 can be pulled through the opening 82 of the support member 6 from the power hole 103.

As described above, the functional unit (emergency light source unit 3) may be positioned at a location other than the longitudinal end of the fixture body 1, for example, in the center of the longitudinal direction.

(4-2) Modification 2
As shown in Figure 20, the lighting fixture A1 of the modified example is equipped with an electrostatic atomization unit 3A, which has an electrostatic atomizing device, as a functional unit, instead of the emergency light source unit 3.

The electrostatic atomizer is designed to generate nano-sized particulate ions by applying a high voltage to water in the air. The particulate ions generated by the electrostatic atomizer contain hydroxyl radicals (OH radicals) that readily interact with various substances, allowing them to remove or suppress allergens such as pollen, bacteria, and viruses floating in the air.

The electrostatic atomization unit 3A has a housing 30A that houses the electrostatic atomization device. Multiple openings 300A are provided on the underside of the housing 30A. The particulate ions generated by the electrostatic atomization device are released into the room through the openings 300A on the underside of the housing 30A.

(4-3) Variation 3
The lighting fixture A1 of the modified example 3 is characterized in that the fixing portion 7 of the support member 6 has only one side plate 70 and one fixing piece 71 (see Figure 21).

In Modified Example 3, the lighting fixture A1 has only one side plate 70 and one fixing piece 71 in its fixing section 7. Therefore, the support member 6 can be attached to the fixture body 1 simply by fixing the fixing piece 71 to the protruding wall 110 of one side wall 11 of the fixture body 1. As a result, Modified Example 3's lighting fixture A1 improves the workability of the assembly process.

(4-4) Modification example 4
The lighting fixture A1 of Modification 4 is characterized by the structure of the fixing part 7 in the support member 6. The fixing part 7 in Modification 4 has a pair of side plates 70 and a pair of fixing pieces 71. The pair of side plates 70 each protrude downward from the front end and rear end of the mounting part 8 (see Figure 22). The pair of fixing pieces 71 each protrude outward from the lower end of the pair of side plates 70.

The fixing portion 7 of the support member 6 is fixed to a pair of side wall portions 11 of the fixture body 1. Specifically,
A pair of fixing pieces 71 of the fixing part 7 are fixed to a pair of side wall portions 11 of the device body 1 by screwing them in one by one (see Figure 22). Each of the pair of fixing pieces 71 is secured to the lower end of the pair of side wall portions 11.

In the modified example 4, the lighting fixture A1 has its fixing portion 7 of the support member 6 positioned below the mounting portion 8, thereby further expanding the wiring space S1 (see Figure 22).

(5) Advantages of the lighting fixture according to the embodiment In the lighting fixture A1, the support member 6 that supports functional units such as the emergency light source unit 3 and the electrostatic atomization unit 3A is housed in the housing recess 12 of the fixture body 1 such that a wiring space S1 is formed between the main body 10 of the fixture body 1 and the mounting portion 8 of the support member 6 (see Figures 3 and 4). The wiring space S1 is sized to accommodate at least two power cables 91.

Therefore, lighting fixture A1 can accommodate two power cables 91 in the wiring space S1 of the housing recess 12: one for supplying power to the power supply unit 22 and the functional unit, and another for wiring to another lighting fixture. As a result, lighting fixture A1 has the advantage of improving the workability of installation compared to the case where the wiring wires (power cables 91) for distribution are routed outside the fixture body 1.

Furthermore, the housing recess 12 leaves the wiring space S1 open at both ends in the longitudinal direction of the fixture body 1 (see Figures 3 and 4). Therefore, when multiple lighting fixtures A1 are installed side-by-side in the longitudinal direction, a power cable 91 for feed-through wiring can be routed from the longitudinal end of the housing recess 12 of one lighting fixture A1 to the housing recess 12 of another lighting fixture A1. As a result, lighting fixture A1 has the advantage of further improving the workability of installation work.

Incidentally, the main body 10 of the fixture body 1 may bend when the nuts 92 are tightened onto the two suspension bolts 90. If the fixing portion 7 of the support member 6 is fixed to the main body 10, the bending of the main body 10 will also affect the support member 6, potentially changing the light distribution characteristics of the emergency light source unit 3 supported by the support member 6. In contrast, in lighting fixture A1, the fixing portion 7 of the support member 6 is fixed to a pair of side wall portions 11. More specifically, fixing pieces 71 provided on a pair of side plates 70 of the fixing portion 7 are fixed to a pair of protruding wall portions 110 that project outward from the longitudinal end edges of the pair of side wall portions 11 (see Figure 13). Therefore, lighting fixture A1 has the advantage of reducing the influence of the bending of the main body 10 on the support member 6 and suppressing changes in the light distribution characteristics of the emergency light source unit 3.

Here, since the protruding wall portion 110 to which the fixing piece 71 is fixed protrudes outward from the leading edge along the longitudinal direction of the pair of side wall portions 11, when assembling the fixture body 1, the support member 6 and the main body 10 can be assembled from the same direction relative to the pair of side wall portions 11. Therefore, compared to the case where the support member 6 and the main body 10 are assembled from different directions (for example, upward and downward) relative to the pair of side wall portions 11, the lighting fixture A1 can achieve improved work efficiency during assembly.

Furthermore, since the fixing piece 71 is provided on the side plate 70 that protrudes from the respective edges of the mounting plate 80 and the support plate 81 toward the side opposite the emergency light source unit 3, the distance between the mounting plate 80 and the support plate 81 can be increased, further reducing the influence of the deflection of the main body 10 on the mounting plate 80 of the support member 6.

Furthermore, the battery case 50 of the battery block 5 of the emergency light source unit 3 has a projection 53 that can be hooked onto a hooking portion 810 provided on the support plate 81 of the support member 6. In other words, in the lighting fixture A1, the battery block 5 can be temporarily supported on the support member 6 by hooking the projection 53 of the battery case 50 onto the hooking portion 810. This means that in the lighting fixture A1, temporarily supporting the battery block 5 on the support member 6 improves the ease of attaching and detaching the cover 30 to the fixture body 1 and the support member 6.

Here, in the fixing portion 7 of the support member 6, the holes 710 provided in each fixing piece 71 are positioned so that, when viewed from the short side direction (front-to-back direction) of the fixing piece 71, the optical axis L1 of the lens 40 and the screw 74 inserted through the hole 710 overlap (see Figure 15). Therefore, even if the support member 6 of the lighting fixture A1 rattles relative to the pair of side walls 11, the optical axis L1 of the lens 40 can be prevented from shifting relative to the fixture body 1.

(6) Summary The lighting fixture (A1) according to the first aspect of the present disclosure comprises a long fixture body (1) and one or more light source units (2) that are detachably attached to the fixture body (1). The lighting fixture (A1) according to the first aspect comprises a functional unit (emergency light source unit 3) arranged adjacent to the light source units (2) along the longitudinal direction of the fixture body (1) and a support member (6) that supports the functional unit. The fixture body (1) has a body (10) formed in the shape of a long plate and attached to a building member (suspension bolt 90), and a pair of side wall portions (11) facing each other in the short direction of the body (10). The fixture body (1) is configured to house a part of the light source unit (2) and a part of the functional unit in a housing recess (12) surrounded by the body (10) and the pair of side wall portions (11). The support member (6) has a fixing portion (7) that is fixed to the main body of the device (1) and a mounting portion (8) to which the functional unit is attached. The support member (6) is housed in the housing recess (12) such that a predetermined space (wiring space S1) is formed between the main body (10) and the mounting portion (8).

The lighting fixture (A1) according to the first embodiment allows the power cable (power cable 91) for daisy-chain wiring to be housed within the fixture body (1).

A lighting fixture (A1) according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting fixture (A1) according to the second aspect, the predetermined space is preferably large enough to accommodate at least two power cables (91).

The lighting fixture (A1) according to the second embodiment can accommodate at least two power cables (91), including wires for daisy-chain wiring, in a predetermined space.

A lighting fixture (A1) according to a third aspect of this disclosure can be realized by combining it with the second aspect. In the lighting fixture (A1) according to the third aspect, it is preferable that the housing recess (12) leaves a predetermined space open at both ends in the longitudinal direction of the fixture body (1).

In the third embodiment of the lighting fixture (A1), when multiple lighting fixtures (A1) are installed side by side in the longitudinal direction, a power cable (91) for daisy-chaining can be routed from the longitudinal end of the housing recess (12) of one lighting fixture (A1) to the housing recess (12) of another lighting fixture (A1). As a result, the lighting fixture (A1) in the third embodiment can further improve the workability of installation work.

The lighting fixture (A1) according to the fourth aspect of this disclosure can be realized by combining it with any of the first to third aspects. In the lighting fixture (A1) according to the fourth aspect, it is preferable that the fixing portion (7) is fixed to at least one of the pair of side wall portions (11).

The lighting fixture (A1) according to the fourth embodiment can reduce the effect of the deflection occurring in the main body (10) on the support member (6).

A lighting fixture (A1) according to a fifth aspect of this disclosure can be realized by combining it with the fourth aspect. In the lighting fixture (A1) according to the fifth aspect, it is preferable that the pair of side wall portions (11) have a pair of protruding wall portions (110) projecting outward from the leading edges along the longitudinal direction of the pair of side wall portions (11). It is preferable that the fixing portion (7) is fixed to the pair of protruding wall portions (110).

The lighting fixture (A1) according to the fifth embodiment can improve the workability of the assembly process compared to the case where the support member (6) and the main body (10) are assembled from different directions (for example, upward and downward) to a pair of side wall portions (11).

The lighting fixture (A1) according to the sixth aspect of this disclosure can be realized by combining it with any of the first to fifth aspects. In the lighting fixture (A1) according to the sixth aspect, the functional unit is preferably an emergency light source unit (3) having a battery block (5) and an emergency light source block (4) that provides emergency lighting using power discharged from the battery block (5).

The lighting fixture (A1) according to the sixth embodiment can provide both normal lighting using the light source unit (2) and emergency lighting using the emergency light source unit (3).

A lighting fixture (A1) according to the seventh aspect of this disclosure can be realized by combining it with the sixth aspect. In the lighting fixture (A1) according to the seventh aspect, the mounting portion (8) preferably includes a mounting plate (80) to which the emergency light source block (4) is attached, and a support plate (81) that detachably supports the battery block (5). The fixing portion (7) preferably includes one or more side plates (70) protruding from the respective edges of the mounting plate (80) and the support plate (81) toward the side opposite the emergency light source unit (3), and fixing pieces (71) that fix one or more side plates (70) to the side wall portion (11).

The lighting fixture (A1) according to the seventh embodiment can further reduce the effect of the deflection occurring in the main body (10) on the support member (6).

The lighting fixture (A1) according to the eighth aspect of this disclosure can be realized by combining it with the seventh aspect. In the lighting fixture (A1) according to the eighth aspect, the battery block (5) preferably includes a plurality of batteries and a battery case (50) formed in a box shape for housing the plurality of batteries. The battery case (50) preferably has a projection (53) that hooks onto a hook portion (810) provided on the support plate (81).

In the eighth embodiment of the lighting fixture (A1), the battery block (5) can be easily supported on the support plate (81) of the support member (6) by hooking the projection (53) onto the hooking portion (810) and rotating the battery case (50).

A1 Lighting fixture 1 Fixture body 2 Light source unit 3 Emergency light source unit (functional unit)
6 Support member 7 Fixing part 8 Mounting part 10 Main body 11 Side wall part 12 Recessed part 50 Battery case 53 Protrusion 70 Side plate 71 Fixing piece 80 Mounting plate 81 Support plate 90 Suspension bolt 91 Power cable (electric wire)
110 Protruding wall section S1 Wiring space (predetermined space)

Claims (3)

A long fixture body is inserted into a recessed hole in the ceiling ,
A unit attached to the main body of the aforementioned device,
Equipped with,
The device body comprises a main body formed in a long, plate-like shape and attached to a building member, and a pair of side wall portions facing each other in the short direction of the main body, and is configured to accommodate a part of the unit in a housing recess surrounded by the main body and the pair of side wall portions.
The part of the unit housed in the aforementioned housing recess forms a predetermined space between itself and the main body.
The predetermined space is capable of accommodating the power cable that has been pulled into the housing recess.
The aforementioned receiving recesses leave the predetermined space open at both ends in the longitudinal direction of the device body.
Lighting fixtures. The predetermined space is large enough to accommodate at least two multi-core power cables.
The lighting fixture according to claim 1. The unit includes a light source unit that is detachably attached to the fixture body, and a functional unit that is positioned adjacent to the light source unit along the longitudinal direction of the fixture body.
A lighting fixture according to claim 1 or 2 .