JP7112018B2 - Covers for luminaires, luminaires and luminaires - Google Patents

Description

The present invention relates to a lamp, a lighting device, and a cover for the lamp. In particular, the present invention relates to a lighting fixture that can be attached to and detached from a main body of a lighting fixture.

In a lighting device, a light-emitting element serving as a light source is sometimes covered with a cover in order to protect it. At this time, there has been proposed a lighting device having a lamp having a sealed structure sealed by a cylindrical cover or the like (see, for example, Patent Documents 1 and 2).

JP 2015-146264 A JP 2016-058266 A

However, depending on the shape of the cover, which is the outer shell, dust and dirt tend to accumulate on the outer surface of the cover.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a cover, a lamp, and a lighting device that are less likely to accumulate dust, dirt, and the like.

A lighting fixture according to the present invention is a lighting fixture to be attached to a lighting fixture, and includes a light-emitting element that serves as a light source, and a normal line to the outer surface of a portion that covers the light-emitting element and is exposed to the outside when mounted on the lighting fixture. a light-transmitting cover having an outer wall portion oriented within a range from the direction along the optical axis of the light emitting element to the direction perpendicular to the optical axis, wherein the cover is attached to the lighting fixture. It has a rib formed so as to protrude in the normal direction of the outer surface at a position facing the open end of the lighting fixture .

According to the present invention, in the outer peripheral portion of the cover, the direction of the normal to the outer surface portion of the portion exposed to the outside is within the range from the direction along the optical axis of the light emitting element to the direction orthogonal to the optical axis. Therefore, it has a shape that makes it difficult for dust and the like to accumulate, and dust and dirt are less likely to accumulate.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the illuminating device 1 which concerns on embodiment of this invention. FIG. 2 is a perspective view showing a division of the lighting fixture 2 and the lamp fixture 3 of the lighting device 1 according to the embodiment of the present invention. 1 is a perspective view of a lamp 3 according to an embodiment of the invention; FIG. 3 is an exploded perspective view of the end portion of the lamp 3 according to the embodiment of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the illuminating device 1 which concerns on embodiment of this invention. FIG. 4 is a diagram (part 1) for explaining the effects of the translucent cover 30 according to the embodiment of the present invention; FIG. 11 is a diagram (part 2) explaining the effect of the translucent cover 30 according to the embodiment of the present invention; It is a figure explaining the illuminating device 1a shown as the modification 1 in embodiment of this invention. It is a figure explaining the illuminating device 1b shown as the modification 2 in embodiment of this invention. It is a figure explaining the illuminating device 1c shown as the modification 3 in embodiment of this invention. It is a figure explaining the illuminating device 1d shown as the modification 4 in embodiment of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, lamps, lighting devices, and lamp covers according to embodiments of the present invention will be described with reference to the drawings. The same or corresponding components in each drawing are denoted by the same reference numerals, and repeated description may be omitted.

Here, the present invention is not limited by the embodiments described below. Also, in the following drawings, the size relationship of each component may differ from the actual size. Also, in the description of the embodiments, directions or positions such as up, down, left, right, front, back, front, and back may be indicated. These notations are for the convenience of explanation, and do not limit the arrangement, direction, and orientation of devices, instruments, or parts.

Embodiment.
<Configuration of lighting device 1>
A configuration of a lighting device 1 according to an embodiment will be described with reference to FIGS. 1 to 5. FIG.

FIG. 1 is a perspective view of a lighting device 1 according to an embodiment of the invention. FIG. 2 is a split perspective view of the lighting device 1 according to the embodiment of the present invention, in which the lighting fixture 2 and the lighting fixture 3 are separated. FIG. 3 is a perspective view of the lamp 3 according to the embodiment of the invention. FIG. 4 is an exploded perspective view of the end portion of the lamp 3 according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of lighting device 1 according to an embodiment of the present invention.

In the following description, a direction along the longitudinal direction of the illumination device 1 is defined as a longitudinal direction X. As shown in FIG. Also, a widthwise direction perpendicular to the lengthwise direction X is referred to as a widthwise direction Y. As shown in FIG. A vertical direction Z is a direction perpendicular to both the longitudinal direction X and the lateral direction Y. As shown in FIG. In addition, in the longitudinal direction X, the direction toward the longitudinal ends is defined as an end direction X1. And, it is the direction opposite to the end direction X1, and the direction toward the longitudinal center side is defined as the middle direction X2. Furthermore, in the vertical direction Z, the direction toward the construction portion 9 to which the lighting device 1 is mounted (that is, toward the mounted portion such as the ceiling or wall) is defined as an upward direction Z1. A downward direction Z2 is defined as a direction opposite to the upward direction Z1 and toward the irradiation space side where light is emitted from the lighting device 1 . Here, the upward direction Z1 is the direction in which the lighting device 3 is attached to the lighting device 2, and the downward direction Z2 is the direction in which the lighting device 3 is removed from the lighting device 2. FIG.

A lighting device 1 according to the present embodiment is composed of a lighting fixture 2 attached to a structure 9 such as a ceiling or a wall, and a lighting fixture 3 attached to the lighting fixture 2, which will be described later. In this embodiment, a so-called trough-type lighting fixture 2 is shown as an example. In Embodiment 1, the fixture body 20 that constitutes the lighting fixture 2 is formed by bending a metal plate material. The instrument body 20 has an instrument bottom portion 21 , a pair of instrument side portions 22 and an instrument end portion 23 . A knockout 24 is formed in the instrument end 23, and is removed when an electric wire (not shown) or the like, which will be described later, is inserted. The configuration and the like of the lighting fixture 2 will be further described.

The mounting portion 25 (accommodating portion, concave portion) accommodates a part of the attached lamp 3 . The mounting portion 25 is formed by the instrument bottom portion 21 of the instrument body 20 , the pair of instrument side portions 22 and the instrument end portion 23 . Therefore, the mounting portion 25 has a space. Here, a part of the lamp 3 accommodated in the mounting portion 25 is a non-irradiating portion that is not on the irradiation side. An open end portion 26 located at the lower end of the instrument body 20 is an opening portion that is not surrounded by the instrument body 20 . The open end portion 26 serves as a mounting opening for attaching and detaching the lamp 3 to and from the mounting portion 25 of the lighting fixture 2 . The lamp 3 is attached to the connecting portion 27 . In this embodiment, the connecting portion 27 is formed integrally with the instrument end portion 23 . It is formed by bending from the open end 26 toward the middle direction X2 in the longitudinal direction X. As shown in FIG. The screw hole 28 is a hole into which a connection screw 48 (to be described later) attached to the lamp 3 is screwed. The connection screw 48 is screwed, and the lamp 3 is attached to the lighting fixture 2 .

A lamp 3 serving as a lighting fixture and a light source unit is used by being attached to the lighting fixture 2 . In the present embodiment, the connecting portion 27 of the lighting fixture 2 is mounted by connecting screws 48 attached to both ends in the longitudinal direction X. As shown in FIG. The lamp 3 of Embodiment 1 mainly has a translucent cover 30, a light-emitting portion 60, and the like.

The light-transmitting cover 30 is made of a light-transmitting material that transmits at least visible light, and accommodates and protects the mounting member 50, the light emitting unit 60, the lighting device (not shown), etc., which will be described later, in an internal space. , a cylindrical outer shell. The translucent cover 30 can be formed using a resin material such as glass, polycarbonate, or acrylic. In addition, the portion of the translucent cover 30 that is exposed to the outside from the mounting portion 25 also serves as an appearance design portion. The light-transmitting cover 30 of the present embodiment can be manufactured by cutting a cylindrical member by extrusion molding to a required length according to product specifications and the like.

In the present embodiment, the portion of the translucent cover 30 that is exposed to the outside from the mounting portion 25 is an outer shell portion (outer wall portion) that covers the irradiation side of the light emitting portion 60 and the surface of the pedestal 51, which will be described later. Become. Here, regarding the outer peripheral portion 37 of this portion, the direction of the normal to the outer surface portion is within the range from the direction along the optical axis L of the light emitting element 61 to the direction orthogonal to the optical axis L, which will be described later. For example, in the lighting device 3 attached to the lighting device 2 so that light is emitted downward, the portion of the translucent cover 30 that is exposed to the outside from the mounting portion 25 has an outer surface that is downward and obliquely downward. , or facing laterally (horizontally outward) and not upward or obliquely upward. The portion of the light-transmitting cover 30 that is housed in the mounting portion 25 and is not exposed to the outside is an outer shell that covers the fixture side of the lighting device (not shown) and the back side of the mounting surface portion 52 of the pedestal 51 . becomes the part (outer wall part). Here, the translucent cover 30 may have light diffusing properties, wavelength discriminating properties, etc. according to product specifications. In addition, the portion of the translucent cover 30 that is not exposed to the outside may be formed using a material having reflectivity, light shielding property, or the like.

The cylindrical translucent cover 30 of the present embodiment covers the equipment housed inside, and has a set of parallel parts 31, a first connecting part 32 and a second connecting part depending on the position with respect to the equipment housed inside. It is divided into parts 33. Also, two ribs 34 are provided. The pair of parallel portions 31 has surfaces that are parallel to each other at the same distance in the translucent cover 30 . In the present embodiment, the outer surface portion serving as the outer surface portion and the inner surface portion serving as the inner surface portion of the pair of parallel portions 31 are both planar. A pair of the outer surface portion and the inner surface portion are planes along the optical axis L of the light emitting element 61 housed in the translucent cover 30, and serve as the outer surface of the outer shell portion (outer wall portion). In this embodiment, this plane extends along the vertical direction Z when the lamp 3 is attached to the lighting fixture 2 . Furthermore, this plane is also a plane along which the pair of outer surface portions and inner surface portions are along the luminaire side portions 22 facing each other when the lamp 3 is attached to the lighting luminaire 2 . It also becomes a plane along the direction in which the lighting fixture 3 is attached to or removed from the lighting fixture 2 . Therefore, the parallel portion 31 of the translucent cover 30 is positioned inside the instrument side portion 22 rather than outside the instrument side portion 22 in the lateral direction Y. As shown in FIG. A portion of the parallel portion 31 that is exposed when the lamp 3 is attached to the lighting equipment 2 serves as an irradiation portion on the side of the lamp 3 .

The first connection portion 32 is a portion that connects the ends of the pair of parallel portions 31 on the irradiation side, intersects the optical axis L of the light emitting element 61 described later, and serves as the main irradiation portion of the lamp 3 . The first connection portion 32 emits light downward from the light emitting element 61 . The outer surface portion and the inner surface portion of the first connecting portion 32 are composed of one or more surfaces. As shown in FIG. 5, in the present embodiment, the case where the outer surface portion and the inner surface portion of the first connection portion 32 of the light-transmitting cover 30 are configured by one curved surface will be described. Here, when the outer surface portion and the inner surface portion of the first connecting portion 32 are composed of a plurality of surfaces, a plurality of curved surfaces having different curvatures, a plurality of planes having different angles, and a combination of these curved surfaces and planes. can be configured in combination. The second connecting portion 33 is a portion that connects the fixture-side ends of the pair of parallel portions 31, and is a portion that is accommodated in the mounting portion 25 when the lamp 3 is mounted on the lighting fixture 2. be. In the present embodiment, the case where the outer surface portion and the inner surface portion of the second connection portion 33 in the translucent cover 30 are configured by one curved surface will be described. Here, when the outer surface portion and the inner surface portion of the second connecting portion 33 are composed of a plurality of surfaces, a plurality of curved surfaces having different curvatures, a plurality of planes having different angles, and a combination of these curved surfaces and planes. can be configured in combination.

The rib 34 is provided so as to protrude in the normal direction of the outer surface of the translucent cover 30 . In the present embodiment, the ribs 34 are provided in each parallel portion 31 so as to protrude outward. Each rib 34 is integrally formed with the parallel portion 31 . Each rib 34 extends in the longitudinal direction X of the translucent cover 30 . The rib 34 is formed at a position facing the vicinity of the open end 26 of the fixture side portion 22 when the lamp 3 is attached to the lighting fixture 2 .

The cover end portions 35 are both end portions of the translucent cover 30 . The fitting portion 36 is a portion to which the end cover 40 is fitted at the cover end portion 35 . The outer surface of mating portion 36 does not have ribs 34 so that it can be mated with end cover 40 . As described above, when the translucent cover 30 is manufactured by cutting a cylindrical member extruded by extrusion molding, the portion of the rib 34 extending in the longitudinal direction X corresponding to the fitting portion 36 is cut. delete. The outer peripheral portion 37 is the outer surface side of the outer shell portion (outer wall portion) that forms the set of the parallel portion 31 , the first connection portion 32 and the second connection portion 33 . In addition, the inner peripheral portion 38 is the inner surface side of the outer shell portion (outer wall portion) that forms the set of parallel portions 31 , the first connection portion 32 and the second connection portion 33 .

The end covers 40 are attached to both ends in the longitudinal direction X of the translucent cover 30 . The end cover 40 is fitted (fitted) with the sealing tool 43 interposed therebetween, so that the translucent cover 30 has a closed structure. Here, the mounting member 50 and the translucent cover 30 mounted on the end cover 40 are particularly resistant to changes in the operating environment temperature of the lighting device 1 and temperature changes between when the lamp 3 is turned on and when the lamp 3 is turned off. The amount of expansion and contraction is different. The end cover 40 has a structure such that the end portions of the light-transmitting cover 30 and the mounting member 50 in the longitudinal direction X are movable relative to each other while maintaining the sealing of the light-transmitting cover 30 . . The end cover 40 has a first end cover 41 as an outer cover and a second end cover 42 as an inner cover. The first end cover 41 includes a first cover main portion 410, first cover through holes 411 and 415, a first cover engaging hole 412, a first cover peripheral portion 414, a first cover wire holding portion 416, and a first cover. It has an end face portion 417 , a first cover drain hole 418 and a first cover lid 419 . The second end cover 42 also has a second cover main portion 420 , a second cover through hole 421 , a second cover engaging piece 422 and a second cover peripheral portion 425 . Here, it is assumed that the first end cover 41 and the second end cover 42 of the present embodiment are formed using a resin material. However, it is not limited to this. It may be formed using a metal material other than a resin material, a ceramic material, or the like. In addition, in the present embodiment, the first end cover 41 and the second end cover 42 are formed as separate members and are integrated by fitting (fitting). You may make it shape|mold as a member.

The sealing member 43, which is a sealing member such as a packing, is sandwiched between both ends of the translucent cover 30 in the longitudinal direction X and the end covers 40. Seal both ends. The sealing member 43 is formed of a resin material so as to be elastically deformable, and adheres tightly to the translucent cover 30 and the end cover 40 . The closure main portion 430 is formed so as to close the inside of an inner peripheral portion 435, which will be described later. The closure main portion 430 is sandwiched between the fixing portion 56 of the fixture 54 and the second cover main portion 420 of the second end cover 42 . The wire insertion portion 431 has a wire insertion hole 432 for passing an electric wire (not shown). Further, the screw insertion portion 433 covers the boss portion 57 . The tip of the screw insertion portion 433 has a screw insertion hole 434 into which the fixing screw 75 is screwed. The inner peripheral portion 435 is a portion sandwiched between the second cover peripheral portion 425 of the second end cover 42 and the inner peripheral portion 38 of the translucent cover 30 . Also, the connecting portion 436 is a portion sandwiched between the second cover main portion 420 of the second end cover 42 and the cover end portion 35 of the translucent cover 30 . The outer peripheral portion 437 is a portion sandwiched between the first cover peripheral portion 414 of the first end cover 41 and the outer peripheral portion 37 of the translucent cover 30 .

The connectors 44 are provided at both ends of the lamp 3 in the longitudinal direction X, and serve as mounting brackets for attaching the lamp 3 to the lighting fixture 2 . In this embodiment, the connector 44 is formed by bending a metal plate. However, it is not limited to this, and may be formed by other methods such as extrusion molding. The connecting portion 45 abuts on the connecting portion 27 of the lighting device 2 . A retaining washer 49 for fixing the connection screw 48 that has passed through the connection screw insertion hole 451 is arranged in the gap portion 450 of the connection portion 45 . The gap dimension of the gap portion 450 is the same as the thickness dimension of the retaining washer 49 . A boss portion 57 is attached to the fixed portion 46 . The fixing portion 46 clamps the end cover 40 and the sealing member 43 together with the fixing member 54 of the mounting member 50 . The fixed portion 46 has a fixing screw insertion hole 460 for screwing the fixing screw 75 . Further, the engaging portion 47 has an electric wire insertion hole 470 through which an electric wire (not shown) is passed. It also has an engagement piece 471 that engages with the first cover wire holding portion 416 .

The mounting member 50 is a member for fixing the light emitting portion 60 , the lighting device (not shown), etc. in the space inside the translucent cover 30 . Therefore, the mounting member 50 is housed in the translucent cover 30 . The mounting member 50 is fixed to the end cover 40 and the connector 44 by a fixing screw 75, which will be described later. Therefore, the mounting member 50 is not directly fixed to the translucent cover 30 , but is fitted (fitted) to the cover ends 35 on both sides in the longitudinal direction X of the translucent cover 30 . connected through 40.

The pedestal 51 is a main part of the mounting member 50, and the light emitting part 60, the lighting device (not shown) and the like are mounted thereon. In this embodiment, the pedestal 51 is formed by bending a metal plate. However, it is not limited to this, and may be formed by other methods such as extrusion molding. In addition, although not shown in the drawings, the pedestal 51 is subjected to surface treatment, placement of functional members, etc. in order to improve heat dissipation efficiency (thermal emissivity), light utilization efficiency (reflectance), and the like. good too. A light-emitting part 60 is attached to the surface of the attachment surface part 52 of the base 51, which is the surface on the irradiation side. A lighting device (not shown) or the like is attached to the back surface, which is the surface of the instrument. The side portions 53 are standing portions that are bent from both ends of the attachment surface portion 52 in the short direction Y toward the irradiation side. The side portions 53 improve the rigidity of the pedestal 51 . In this embodiment, the side portion 53 is erected only on the irradiation side, but may be erected on both the irradiation side and the instrument side. In addition, in the present embodiment, the side portions 53 are erected at both ends of the attachment surface portion 52 in the transverse direction Y, but for example, the central portion of the attachment surface portion 52 in the transverse direction Y, etc., other than the both ends. It may be set up at the position of

The fixtures 54 are provided at both ends of the pedestal 51 in the longitudinal direction X, and are metal fittings for fixing the mounting member 50 to the end covers 40 and connectors 44 attached to both ends of the translucent cover 30 . Here, in the present embodiment, the fixture 54 is configured as a separate member from the pedestal 51, but the configuration is not limited to this. For example, both ends of the pedestal 51 may be bent so that the pedestal 51 has a portion having the same function as the fixture 54 . The fixture 54 may be attached using a fixing member such as a mounting screw (not shown). The fixture 54 has a mounting portion 55 and a fixing portion 56 . The attachment portion 55 is a portion for attaching the fixture 54 to the base 51 . The mounting portion 55 is structurally integrated with the pedestal 51 by caulking, welding (welding), fitting (engaging), or the like. A boss portion 57 is attached to the fixed portion 56 . The fixing portion 56 sandwiches the end cover 40 and the sealing member 43 together with the fixing portion 46 of the connector 44 . A screw hole 58 into which a fixing screw 75 is screwed is formed in the boss portion 57 . A screw groove is formed on the inner peripheral side of the screw hole 58 . Then, from the outside of the connector 44, the fixing screw insertion hole 460 of the connector 44, the second cover through hole 421 of the second end cover 42, the first cover through hole 411 of the first end cover 41, and the sealing member A screw insertion hole 434 of 43 is screwed by a fixing screw 75 .

The light emitting section 60 has a light emitting element 61, a substrate 62, and the like. The light emitting element 61 emits light by power supply. In this embodiment, a light emitting diode (hereinafter referred to as LED) element is used as the light emitting element 61 . The light-emitting element 61 of the present embodiment is packaged by disposing a phosphor that converts the wavelength of blue light into yellow light on an LED chip that emits blue light with a wavelength of 440 to 480 [nm]. It is a pseudo-white LED element that is a surface mount component. Here, the light emitted from the light emitting element 61 has the maximum luminous flux value and spreads symmetrically by the illumination angle α with respect to the optical axis L perpendicular to the light emitting surface. In this embodiment, the irradiation angle α of the light emitting element 61 is assumed to be 120 degrees. A solid state laser, a semiconductor laser, an organic EL (Electro Luminescence), an inorganic EL, or the like may be used as the light emitting element 61 . The substrate 62 may be a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper epoxy substrate (FR-3), a paper phenol substrate (XPC), a metal base substrate, or the like.

The light emitting section 60 also has a lighting device (not shown) that serves as a power source for the light emitting element 61 . The lighting device converts electric power supplied from the outside into electric power for lighting the light emitting element 61 and supplies the electric power to the light emitting element 61 . In the present embodiment, as described above, the lighting device is attached to the back surface of the pedestal 51 using a fixing member such as a screw (not shown), and the light emitting element 61 and the like are arranged in a tubular shape. housed in a protective cover 30. However, the lighting device may be attached to the luminaire 2 instead of the lamp 3 . In this case, an electric wire (not shown), which will be described later, serves as a power supply line that functions as a supply path for electric power supplied from the lighting device to the light emitting element 61 .

One end of the electric wire (not shown) in this embodiment is connected to a lighting device (not shown). The other end is connected to a terminal block (not shown) attached to the lighting fixture 2 . It becomes a power supply line that functions as a power receiving path for receiving power supply from an external power supply. The fixing screw 75 is a screw for fixing the connector 44 , the end cover 40 , the sealing member 43 and the fixture 54 of the mounting member 50 .

<Effect>
6 and 7 are diagrams for explaining the effect of the translucent cover 30 according to the embodiment of the invention. In the lighting device 1 of the present embodiment configured as described above, the use of the translucent cover 30 described above for the lamp 3 provides the following effects.

The translucent cover 30 in the lamp 3 of the present embodiment has a pair of parallel portions 31 in which the outer surface portion and the inner surface portion are parallel to each other at the same distance. In addition, of the set of parallel portions 31 , the portion exposed when the lamp 3 is attached to the lighting equipment 2 faces the side of the lamp 3 (outward in the horizontal direction). The ends of the set of parallel portions 31 on the irradiation side are connected by a first connection portion 32 . As described above, the portion of the translucent cover 30 that is exposed when the lamp 3 is attached to the lighting fixture 2 does not protrude in the lateral direction Y, and is positioned downward from the side. facing the direction. Therefore, the parallel portion 31 of the translucent cover 30 does not have a surface facing upward or obliquely upward.

Therefore, even if dust or the like is carried in the direction of arrow D1 shown in FIG. As indicated by arrow D2 in FIG. 6, it flows down. Therefore, dust and the like do not accumulate on the outer peripheral portion 37 of the translucent cover 30 . Therefore, the translucent cover 30 is kept clean and translucent. In other words, the design of the lamp 3 is not impaired, and the light utilization efficiency is maintained, so the optical performance such as the amount of light (luminous flux value) emitted from the lamp 3 and light distribution is maintained.

In addition, in the lamp 3 of the present embodiment, the portion of the translucent cover 30 that is exposed when the lamp 3 is attached to the lighting fixture 2 expands outward (to the side) in the transverse direction Y. not issued. Therefore, as shown by the arrow W in FIG. 6 , the wind received from the side can be smoothly detoured along the outer peripheral portion 37 . That is, the exposed portion of the translucent cover 30 has a shape with low air resistance. Therefore, it is less likely to be affected by wind pressure, and the lighting device 1 is less likely to sway due to the wind. That is, even in the outdoors exposed to strong wind, the lighting device 1 is free from the possibility that the lamp 3 will come off from the lighting fixture 2 or the lighting fixture 2 will come off from the construction portion 9 . In addition, light is stably emitted from the lighting device 1 to the irradiation space.

Further, in the present embodiment, a set of integrally formed ribs 34 extend in the longitudinal direction X so as to protrude outward from the opposing parallel portions 31 of the translucent cover 30 . Therefore, the rigidity of the translucent cover 30 can be improved, and deformation such as warping, bending, and twisting of the lamp 3 can be suppressed.

Also, the set of ribs 34 guides the lighting device 3 to be mounted on the central portion in the lateral direction Y of the mounting portion 25 of the lighting device 2 . Therefore, the ribs 34 can position (center) the lighting fixture 3 in relation to the lighting fixture 2 .

Further, the rib 34 is formed at a position facing (lower end portion) the vicinity of the opening end portion 26 of the fixture side portion 22 in a state where the lamp 3 is attached to the lighting fixture 2 . Therefore, it is possible to prevent dust from entering the mounting portion 25 . Then, as shown in FIG. 6, dust or the like that flows downward (arrow P) of the second connection portion 33 of the translucent cover 30 stays in the S portion formed by the rib 34, It is possible to suppress falling on the part where the optical cover 30 is exposed.

Furthermore, as shown in FIGS. 6 and 7, the rib 34 can make the gap between the lamp 3 and the lighting fixture 2 inconspicuous. In addition, even if a gap remains, the position of the gap is evenly balanced, so that the design of the lighting device 1 can be improved both when it is turned on and when it is turned off.

<Modification>
The lighting device 3 described above can be applied to various lighting devices 1 other than the lighting device 1 formed by combining the lighting device 2 and the lighting device 3 described above. Next, modifications of the device will be described with reference to FIGS. 8 to 11. FIG.

<Modification 1>
FIG. 8 is a diagram illustrating a lighting device 1a shown as Modified Example 1 of the embodiment of the present invention. FIG. 8(a) is a diagram illustrating the shapes of the lighting device 2a and the lighting device 3 when the lighting device 1a is viewed in the longitudinal direction X corresponding to FIG. FIG. 8(b) is a perspective view showing a part of the illumination device 1a as seen in the Z1 direction of the vertical direction Z. As shown in FIG. And FIG.8(c) is a perspective view which shows a part of illuminating device 1a seen from another angle.

As shown in FIG. 8, the lighting fixture 2a of Modification 1 has a fixture body 20a formed with an inclined portion 200a for reflecting and diffusing part of the light directed toward the building portion 9. As shown in FIG. As Modified Example 1, the lighting device 1a shown in FIG. 8 can also use the lamp 3 described above, and the same effects can be obtained.

<Modification 2>
FIG. 9 is a diagram illustrating a lighting device 1b shown as Modified Example 2 of the embodiment of the present invention. FIG. 9(a) is a diagram illustrating the shapes of the lighting device 2b and the lighting device 3 when the lighting device 1b is viewed in the longitudinal direction X corresponding to FIG. FIG. 9(b) is a perspective view showing a part of the illumination device 1b as seen in the Z1 direction of the vertical direction Z. As shown in FIG. And FIG.9(c) is a perspective view which shows a part of illuminating device 1b seen from another angle.

A lighting fixture 2b of Modified Example 2 shown in FIG. 9 has a fixture main body 20b formed with an inclined portion 200b that is wider than the inclined portion 200a formed in the lighting fixture 2a of Modified Example 1 shown in FIG. . As Modified Example 2, the lighting device 3 described above can also be used in the illumination device 1b shown in FIG. 9, and the same effects can be obtained.

<Modification 3>
FIG. 10 is a diagram illustrating a lighting device 1c shown as Modified Example 3 of the embodiment of the present invention. FIG. 10(a) is a diagram illustrating the shapes of the lighting device 2c and the lighting device 3 when the lighting device 1c is viewed in the longitudinal direction X corresponding to FIG. Also, FIG. 10(b) is a perspective view showing a part of the illumination device 1c as seen in the Z1 direction of the vertical direction Z. As shown in FIG. And FIG.10(c) is a perspective view which shows a part of illuminating device 1c seen from another angle.

As shown in FIG. 10, the lighting fixture 2c of Modification 3 has a fixture main body 20c formed with a shade section 29 that reflects part of the light directed toward the construction section 9. As shown in FIG. The cap portion 29 is integrally formed by bending the instrument side portion 22 . In Modified Example 3, a cap portion 29 is formed on each of the pair of instrument side portions 22 . As a modification 3, the lighting device 3 described above can be used in the illumination device 1c shown in FIG. 10, and the same effects can be obtained.

<Modification 4>
FIG. 11 is a diagram illustrating a lighting device 1d shown as Modified Example 4 of the embodiment of the present invention. FIG. 11(a) is a diagram illustrating the shapes of the lighting device 2d and the lighting device 3 when the lighting device 1d is viewed in the longitudinal direction X corresponding to FIG. Also, FIG. 11(b) is a perspective view showing a part of the illumination device 1d as seen in the Z1 direction of the vertical direction Z. As shown in FIG. And FIG.11(c) is a perspective view which shows a part of illuminating device 1d seen from another angle.

As shown in FIG. 11, the lighting fixture 2c of Modification 4 has a fixture main body in which a shade section 29d that reflects part of the light directed toward the construction section 9 is attached to one of the pair of fixture side sections 22. 20d. As a modification 4, the lighting device 1d shown in FIG. 11 can also use the lamp 3 described above, and the same effects can be obtained.

Reference Signs List 1, 1a, 1b, 1c, 1d Lighting device 2, 2a, 2b, 2c, 2d Lighting fixture 3 Light fixture 9 Construction part 20, 20a, 20b, 20c, 20d Fixture main body 21 Fixture bottom part 22 Fixture side portion, 23 instrument end portion, 24 knockout, 25 mounting portion, 26 opening end portion, 27 connecting portion, 28 screw hole, 29, 29d cap portion, 30 translucent cover, 31 parallel portion, 32 first connection portion, 33 second connecting portion 34 rib 35 cover end portion 36 fitting portion 37 outer peripheral portion 38 inner peripheral portion 40 end cover 41 first end cover 42 second end cover 43 sealing tool, 44 connecting tool, 45 connecting part, 46 fixing part, 47 engaging part, 48 connecting screw, 49 retention washer, 50 mounting member, 51 pedestal, 52 mounting surface part, 53 side part, 54 fixing tool, 55 mounting part , 56 fixing portion, 57 boss portion, 58 screw hole, 60 light emitting portion, 61 light emitting element, 62 substrate, 75 fixing screw, 200a, 200b inclined portion, 410 first cover main portion, 411, 415 first cover through hole, 412 first cover engagement hole, 414 first cover peripheral portion, 416 first cover wire holding portion, 417 first cover end face portion, 418 first cover drain hole, 419 first cover lid, 420 second cover main portion, 421 second cover through hole, 422 second cover engaging piece, 425 second cover peripheral portion, 430 closure main portion, 431 wire insertion portion, 432 wire insertion hole, 433 screw insertion portion, 434 screw insertion hole, 435 Inner peripheral portion 436 Connecting portion 437 Outer peripheral portion 450 Difference portion 451 Connecting screw insertion hole 460 Fixing screw insertion hole 470 Wire insertion hole 471 Engagement piece.

Claims (7)

A lighting fixture attached to a lighting fixture,
a light-emitting element serving as a light source;
A range in which the direction of the normal to the outer surface of the portion that covers the light emitting element and is exposed to the outside in the state of being attached to the lighting equipment is from the direction along the optical axis of the light emitting element to the direction perpendicular to the optical axis. a translucent cover having an inner outer wall ,
The cover is
A lamp having a rib formed so as to protrude in the normal direction of the outer surface portion at a position facing the open end of the lighting fixture when attached to the lighting fixture. The cover is
2. The lighting device according to claim 1 , further comprising a pair of parallel portions that sandwich the light emitting element and serve as outer wall portions along the optical axis. The rib is
3. The lamp according to claim 2 , wherein the parallel portion is formed to protrude in the normal direction of the outer surface portion. The cover is
4. The lighting fixture according to claim 2 , further comprising a first connecting portion serving as an outer wall portion that connects ends of the pair of parallel portions on the irradiation side by the light emitting element. a lamp that emits light;
A lighting fixture having a mounting portion to which the lighting fixture is mounted,
The lamp is
a light-emitting element serving as a light source;
A range in which the direction of the normal to the outer surface of the portion that covers the light emitting element and is exposed to the outside in the state of being attached to the lighting equipment is from the direction along the optical axis of the light emitting element to the direction perpendicular to the optical axis. A translucent cover having an inner peripheral portion ,
The cover is
A lighting device having a rib formed so as to protrude in a normal direction of the outer surface portion at a position facing an open end portion of the lighting device when attached to the lighting device. A cover that covers a light-emitting element of a lamp attached to a lighting fixture,
an outer peripheral portion in which the direction of the normal to the outer surface portion of the portion exposed to the outside in the state of being attached to the lighting device is within the range from the direction along the optical axis of the light emitting element to the direction perpendicular to the optical axis ; ,
A lamp cover having a rib formed so as to protrude in the normal direction of the outer surface portion at a position facing the open end of the lighting equipment when attached to the lighting equipment . The lamp cover according to claim 6 , wherein the cover has a cylindrical shape.

Images