JP2022123796A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture that reduces the glare to achieve uniform light emission.SOLUTION: A lighting fixture 11 has a light source part 41, an irradiation opening 25 formed laterally long to emit the light from the light source part 41 from a lower end part of the lighting fixture to the outside, and a light control member 61 provided to close the irradiation opening 25. The light control member 61 has an incidence surface 62 made plane and an emission surface 64 formed into an arch-sectioned concave surface. Both lengthwise end parts 61a of the light control member 61 are arranged nearby both lengthwise end parts 25a of the irradiation opening 25. The lengthwise center part of the light control member 61 is arranged more on an inner side of the lighting fixture than both the lengthwise end pars 25a of the irradiation opening 25.SELECTED DRAWING: Figure 8

Description

The present invention relates to lighting fixtures.

In US Pat. No. 5,400,000, a bright foot light is disclosed that does not produce glare.

The foot light disclosed in Patent Document 1 is provided with a translucent cover formed of a light-shielding louver plate material over the irradiation opening of the device body. The direct light emitted from the footlight mainly illuminates the feet and is configured so that it does not enter the human eye.

JP-A-9-282911

However, when a highly directional light source such as an LED element is used in the configuration of the foot light of Patent Document 1, the light emitted from the light source cannot be sufficiently emitted unless the distance between the light source and the light shielding louver plate material is appropriately set. Since the light is not diffused, there is a risk that the light emitted from the foot light may become locally bright.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a lighting fixture that reduces glare and achieves uniform light emission.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, the lighting fixture disclosed in the present application is
a light source;
a horizontally long irradiation opening for irradiating the light from the light source unit to the outside from the lighting fixture;
a light control member provided to block the irradiation aperture;
The light control member has a plane entrance surface and a concave exit surface with an arch-shaped cross section.

In the lighting fixture disclosed in the present application,
Both ends of the light control member in the longitudinal direction are preferably arranged in the vicinity of both ends of the irradiation aperture in the longitudinal direction.

In the lighting fixture disclosed in the present application,
It is preferable that the longitudinal central portion of the light control member is arranged closer to the inside of the lighting fixture than both longitudinal end portions of the irradiation opening.

In the lighting fixture disclosed in the present application,
It is preferable that the optical axis direction of the light source section and the emission direction of the emission surface of the light control member are different.

In the lighting fixture disclosed in the present application,
The light control member has at least one wall that intersects with the exit surface,
It is preferable that the end portion of the wall portion on the side of the exit surface is close to the end portion of the irradiation opening in the vertical direction.

ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which reduced glare and implement|achieved uniform light emission can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the lighting fixture which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the lighting fixture which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the lighting fixture which concerns on embodiment of this invention. FIG. 4 is a cross-sectional view along the line AA in FIG. 3; 1 is an exploded view showing a lighting fixture according to an embodiment of the present invention; FIG. The perspective view which shows a top plate. Explanatory drawing for demonstrating the method of attaching a board|substrate to an instrument main body. FIG. 5 is a cross-sectional view along the line BB in FIG. 4; It is a figure which shows packing, (a) is a perspective view which shows a back side, (b) is a perspective view which shows a front side. FIG. 4 is a view showing the front side of the light control member, (a) is a perspective view of the light control member as seen from the upper right, and (b) is a perspective view of the light control member as seen from the lower left.

A lighting fixture 11 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10. FIG. A lighting fixture 11 according to the present embodiment is a lighting fixture that uses an LED element 42 as a light source. The lighting device 11 can be used, for example, as a footlight (footlight) that is embedded in a mounting hole provided in a wall surface W, which is an example of a mounting surface, to illuminate a floor surface. In the following description, the side of the lighting fixture 11 attached to the wall surface W is assumed to be the mounting surface side (back side) of the lighting fixture 11, based on the case where the lighting fixture 11 is attached to the wall surface W as shown in FIG. explain. The vertical direction in FIGS. 1 to 3 will be described as the “vertical direction” of the lighting device 11. As shown in FIG. The left-right direction in FIGS. 1 to 3 will be described as the “left-right direction” or “width direction” of the lighting device 11 . The front-back direction in FIG. 4 will be described as the “front-back direction” of the lighting device 11 . Further, in the following description, a state in which the lighting fixture 11 and the like are viewed from above is assumed to be a plan view. Moreover, the state which looked at the lighting fixture 11 grade|etc., from the side is made into the side view. Moreover, the state which looked at the cross-sectional shape of lighting fixtures 11 grade|etc., is made into cross-sectional view.

As shown in FIGS. 1 to 5, the lighting fixture 11 has a horizontally long substantially rectangular parallelepiped shape when viewed from the front. The lighting fixture 11 mainly includes a fixture main body 21 , a power source section 31 , a terminal block 35 , a terminal block cover 36 , a light source section 41 , a packing 51 that is an example of an elastic member, a light control member 61 and a mounting spring 71 .

The instrument main body 21 has a horizontally long rectangular shape when viewed from the front. The instrument main body 21 is a bottomed concave metal member with an opening on the back side (rear side). The instrument main body 21 is open on the lower side. The fixture main body 21 is an example of a front cover arranged on the front side of the lighting fixture 11 . The fixture main body 21 holds the top plate 28, the power source section 31, the terminal block 35, the light source section 41, the packing 51, the light control member 61, the mounting spring 71, and the like. The instrument main body 21 is made of, for example, a metal material with high thermal conductivity. In this embodiment, as an example, the instrument main body 21 is made of an aluminum alloy. Thereby, the heat generated from the power supply section 31 and the light source section 41 can be dissipated.

The instrument main body 21 mainly has a concave portion 22 , a pair of board guide portions 23 and 23 , a top plate mounting portion 24 and an irradiation opening 25 .

The recessed portion 22 is a substantially box-shaped portion with a bottom that is open on the back side (rear side) and the bottom side. The concave portion 22 is a portion for accommodating and arranging the light source portion 41, the packing 51, the light control member 61, wiring, etc., and the depth and width for accommodating these are secured inside. The concave portion 22 has a rectangular bottom portion 22a that closes the front side of the instrument main body 21, and a substantially U-shaped side wall portion 22b that is formed around the bottom portion 22a.

The board guide portion 23 is a U-shaped portion protruding from the bottom portion 22a of the recessed portion 22 toward the back side. The board guide portion 23 is for guiding the light source portion 41 to a predetermined position on the back side of the bottom portion 22 a of the recess portion 22 . The board guide portions 23 are arranged near both ends in the left-right direction of the bottom portion 22a. The board guide portion 23 is arranged substantially in the vertical center of the bottom portion 22a. Both ends of the substrate 43 of the light source portion 41 in the longitudinal direction are engaged with the substrate guide portions 23 , and the light source portion 41 is positioned with respect to the instrument main body 21 .
Although the substrate guide portion 23 of the present embodiment is provided in a U shape, it may be formed in a shape other than a U shape. For example, they may be provided in a linear shape or in a shape that sandwiches part of the substrate 43 of the light source unit 41 .

The top plate mounting portion 24 is a plurality of bosses that are provided on the bottom portion 22a of the recessed portion 22 and protrude toward the back side. The top plate mounting portion 24 is formed corresponding to the through holes 28 a and 28 b of the top plate 28 . A top plate 28 is attached to the top plate attachment portion 24 with an attachment member 30 such as a screw.

The irradiation opening 25 is an opening portion on the lower side of the instrument body 21 . The irradiation opening 25 is a horizontally long portion that irradiates the light from the light source unit 41 to the outside from the lower end portion of the lighting device 11 . The irradiation opening 25 is a portion that irradiates the light emitted from the light emitting surface of the light control member 61 to the outside (see FIG. 4).

As shown in FIGS. 4 and 5 , the top plate 28 is a plate-like member that partitions the light source section 41 and the power supply section 31 . The top plate 28 is an example of the partition plate of the present invention. The top plate 28 is a member that covers the back side of the instrument body 21 to which the packing 51 is attached. The top plate 28 is formed in a laterally elongated rectangular shape whose dimensions in the vertical direction and width direction are slightly smaller than the outer shape of the packing 51 . The top plate 28 has through-holes 28a in the vicinity of the four corners through which mounting members 30 such as screws are inserted, through-holes 28b provided substantially in the center in the left-right direction, and notch holes in which the projections 56b of the wire holding portion 56 of the packing 51 are engaged. 28c (see FIG. 6). The notch hole 28c is formed so as to partially open the upper end of the top plate 28 . The front side of the top plate 28 is painted black. The top plate 28 is arranged on the back side of the packing 51. First, the convex portion 56b of the packing 51 is engaged with the notch hole 28c to position it, and the mounting member 30 such as a screw is inserted through the through hole 28b to attach the bottom plate 28. 22a is attached to the top plate attachment portion 24 arranged in the center portion in the left-right direction. Next, the through hole 33b of the power supply cover 33 is arranged so as to overlap with the through hole 28a of the top plate 28, and the mounting member 30 such as a screw is inserted into the through hole 33b and the through hole 28a. It is tightened together with the mounting portion 24 . The extending portions 33 a of the power supply cover 33 and the top plate 28 are fastened together by the mounting member 30 and attached to the instrument main body 21 . As shown in FIG. 4 , the top plate 28 forms a space S surrounding the light source unit 41 together with the fixture main body 21 . The top plate 28 has a reflecting surface 28 d that reflects the light emitted from the light source section 41 . The reflecting surface 28 d faces the light source section 41 .

The front side (28d of reflection surfaces) of the top plate 28 of this embodiment was painted black. The reflecting surface 28d painted in black has a lower reflectance than those painted in white or silver. Therefore, part of the light emitted from the light source is absorbed by the reflecting surface 28 d of the top plate 28 , part of the light is reflected and diffused into the space S, and then emitted from the emission opening of the lighting fixture 11 . As a result, the brightness of the illumination light from the lighting device 11 is reduced and the brightness is suppressed. Even when it is lit in the dark, the illumination light from the lighting device 11 is not too dazzling, so that it is difficult to wake up the user who is going to bed at night, for example, to go to the bathroom.
In order to efficiently reflect light, the reflecting surface 28d may be subjected to reflection processing such as white coating, silver coating, or glossy metal plating. Further, a concave curved surface or an inclined surface may be formed on the reflecting surface 28 d so as to guide the light to the exit opening of the instrument body 21 . Further, the reflecting surface 28d may be processed to have a dimple shape, for example. Furthermore, the reflective surface 28d may have fine irregularities formed on its surface by surface roughening (for example, texturing). The shape of the reflecting surface 28d can be changed as appropriate to obtain desired irradiation light. The reflective surface 28d may diffuse light.

The power supply unit 31 is a power supply device for supplying power to the LED elements 42 of the light source unit 41 to light the LED elements 42 . The power supply unit 31 is arranged behind (on the rear side of) the light source unit 41 in the instrument main body 21 . The power supply unit 31 has a power supply circuit unit 32 and a power supply cover 33 covering the power supply circuit unit 32 . The power supply circuit unit 32 contains a power supply circuit in which a plurality of electronic components are mounted on a rectangular parallelepiped printed wiring board in a substantially rectangular parallelepiped insulating case. The power supply cover 33 is a bottomed box-shaped metal member that covers the power supply circuit section 32 . The power supply cover 33 includes extending portions 33a extending in the left-right direction from a portion of the end portion of the bottomed box-shaped portion covering the periphery of the power supply circuit portion 32, and spring mounting portions 34 and 34 to which the mounting spring 71 is mounted. have The extending portion 33a is provided with screw mounting portions 33b, 33b which are through holes. The extending portions 33a and 33a of the power supply cover 33 and the top plate 28 are fastened together and fixed to the top plate mounting portion 24 of the instrument main body 21 by mounting members 30 such as screws. As a result, workability in assembling the lighting device 11 can be improved, and the number of parts can be reduced. The spring attachment portions 34 and 34 have a pair of upper and lower protrusions 34 a and 34 a for positioning the base end portion of the attachment spring 71 . Note that the pair of upper and lower protrusions 34a, 34a is not an essential configuration, and a configuration in which the protrusion 34a is not provided, or a protrusion 34a may be provided on each of the spring mounting portions 34 is possible. As shown in FIG. 4, the power supply unit 31 is arranged to face the mounting surface side of the substrate 43 of the light source unit 41 on which the LED elements 42 are mounted. The power supply unit 31 converts an alternating current supplied from an external commercial power supply via wiring into a predetermined direct current, and supplies the converted current to the LED element 42 . The power supply unit 31 is electrically connected to the terminal block 35 via electric wires.

The terminal block 35 has a pair of vertically arranged protrusions 35a for positioning the terminal block 35 with respect to the power supply cover 33, and a through hole 35b provided between the pair of protrusions 35a. The terminal block 35 is positioned by inserting the convex portion 35a into the through hole 33c of the power supply cover 33, and is attached to the back side of the power supply cover 33 by inserting a mounting member 37 such as a screw into the through hole 35b. For example, when attaching the lighting fixture 11 to the wall surface W, the wiring extending from the terminal block 35 is connected in advance to the wiring for an external commercial power supply (not shown) on the back side of the wall surface W, so that the power supply unit 31 is electrically connected to the external commercial power supply. connected to The power supply unit 31 and the light source unit 41 are electrically connected by wiring (electric wire). The terminal block cover 36 is in the shape of a bottomed box made of resin and has an open front side. The terminal block cover 36 covers the terminal block 35 and is fitted to the outside of the terminal block 35 .

Although the terminal block 35 is used in this embodiment, it is not particularly limited. For example, instead of using the terminal block 35, it is also possible to use a connection part such as a connector.

The light source part 41 is a part that emits light toward the side (back side) in the lighting device 11 . The light source unit 41 is a module substrate on which a light emitting element as a light source is mounted. The light source unit 41 includes a board 43 processed into a flat plate (horizontally long), and a plurality of LED elements 42, which are point light sources, are arranged on the board 43 in the longitudinal direction (horizontal direction) of the board 43 at regular intervals and substantially linearly. They are arranged on top of each other. In addition, although a plurality of LED elements are used as the light source in this embodiment, the light source is not limited to this, and a COB type light emitting module, an organic EL element, or the like may be used. The substrate 43 is positioned by a pair of substrate guide portions 23 of the instrument main body 21 (see FIG. 7(a)). As a result, the substrate 43 is placed in contact with the flat surface of the bottom portion 22 a on the back side of the instrument main body 21 . Next, the packing 51 with which the light control member 61 is engaged in advance is fitted into the concave portion 22 of the instrument main body 21 . As a result, the substrate pressing portions 53 of the packing 51 come into contact with both lateral end portions of the substrate 43 (see FIG. 7B). Subsequently, the top plate 28 is arranged on the back side of the packing 51, and the packing 51 is pressed by attaching the top plate 28 to the top plate mounting portion 24 of the instrument main body 21 with a mounting member 30 such as a screw (FIG. 8). reference). Thereby, the substrate 43 is fixed to the concave portion 22 of the instrument main body 21 . Further, the substrate pressing portion 53 of the packing 51 presses the substrate 43 toward the bottom portion 22a of the concave portion 22 of the instrument body 21, so that the adhesion between the substrate 43 and the instrument body 21 can be enhanced. Since the light source unit 41 is attached to the device main body 21 in this manner, attachment members such as screws for attaching the light source unit 41 are not required, and the number of parts can be reduced. The board 43 is electrically connected to the power source section 31 by an electric wire extending from a connector 44 provided near one end in the left-right direction of the board 43 .

Since the light source unit 41 is arranged with the rear surface of the mounting surface of the substrate 43 in contact with the flat surface of the bottom portion 22a of the concave portion 22 of the fixture body 21, the heat generated from the light source portion 41 is conducted to the bottom portion 22a. The heat transmitted to the bottom portion 22a is transmitted to the surrounding air on the front side of the bottom portion 22a when the ambient temperature on the front side of the bottom portion 22a is lower than the temperature of the bottom portion 22a. Also, the heat transmitted to the bottom portion 22 a is transmitted to the entire instrument main body 21 . Thereby, the heat transmitted to the bottom portion 22a is radiated to the periphery of the bottom portion 22a. That is, the fixture main body 21 functions as a heat radiating member that conducts heat generated from the light source section 41 and releases the heat to the outside.
The substrate 43 may be attached to the concave portion 22 (bottom portion 22a) of the fixture body 21 via a heat conductive sheet or heat dissipation grease, thereby obtaining higher heat dissipation.
In addition, in this embodiment, one module substrate is used as the light source unit 41, but the light source unit 41 may be configured by a plurality of module substrates without being limited thereto.

As shown in FIG. 9, the packing 51 is a flexible elastic member having a laterally long, substantially rectangular frame shape. The packing 51 of this embodiment is colored black. The packing 51 of this embodiment was produced using silicone rubber. The packing 51 is arranged between the light source section 41 and the top plate 28 . The packing 51 has a peripheral wall portion 52, a board pressing portion 53, an engaging portion 54, an overhanging portion 55, a wire holding portion 56, and a locking portion 57 (see FIG. 8). The peripheral wall portion 52 is formed along the side wall portion 22b of the instrument main body 21 . The peripheral wall portion 52 is an outer frame portion of the packing 51 having a substantially rectangular tubular shape. The substrate pressing portion 53 is a portion extending inward from the left and right portions of the peripheral wall portion 52 . The substrate holding portion 53 is a portion that overlaps with both ends of the light source portion 41 in the left-right direction and contacts the mounting surface of the substrate 43 when the packing 51 is attached to the instrument main body 21 . The engaging portion 54 is a rectangular tubular portion that extends in the left-right direction and communicates in the up-down direction. The engaging portion 54 is formed to have dimensions smaller than the outer shape of the upper end portion of the light control member 61 . As a result, when the light control member 61 is engaged with the engaging portion 54, the engaging portion 54 expands. placed along the When the packing 51 is arranged between the instrument main body 21 and the top plate 28 with the light control member 61 engaged, the engaging portion 54 of the packing 51 abuts against the instrument main body 21, the top plate 28, and the light control member 61, respectively. . The packing 51 is held in a desired position by being in close contact with each member due to its frictional force. Thereby, the engaging portion 54 can stably hold the light control member 61 . The protruding portion 55 is a substantially rectangular frame-shaped portion that protrudes outward from the outer peripheral edge of the top plate 28 (see FIGS. 2 and 4). The protruding portion 55 has a rib 55a that abuts against the wall surface W when the lighting fixture 11 is attached to the wall surface W. As shown in FIG. The rib 55a is shaped like a rectangular frame around the peripheral wall portion 52 and protrudes toward the rear side. The rib 55a is formed in a shape in which two substantially triangular shapes are continuous in a cross-sectional view. The rib 55a abuts on the periphery of the mounting hole of the wall surface W when the lighting device 11 is mounted on the wall surface W. As shown in FIG. As a result, the gap between the peripheral portion of the mounting hole of the wall surface W and the lighting fixture 11 can be closed, and for example, intrusion of rainwater or the like can be prevented in the case of outdoor use.

The wire holding portion 56 is a portion that protrudes downward from the upper right side of the peripheral wall portion 52 . The wire holding portion 56 has a notch portion 56a and a convex portion 56b having a substantially trapezoidal cross-sectional view. The notch portion 56a is a portion cut out so as to open the lower side of the wire holding portion 56, and is a portion that sandwiches and holds the wire that electrically connects the light source portion 41 and the power supply portion 31. As shown in FIG. The convex portion 56b is a portion with which the notch hole 28c of the top plate 28 is engaged. The notch portion 56a of the electric wire holding portion 56 is formed by notching so that the lower side is open, and the notch hole 28c of the top plate 28 is formed by notching so that the upper side is open. Therefore, the electric wire is held by being vertically sandwiched between the notch portion 56 a of the electric wire holding portion 56 and the notch hole 28 c of the top plate 28 . As a result, the electric wire can be prevented from falling out of the notch portion 56 a of the electric wire holding portion 56 . The engaging portion 57 is a flat surface arranged below the substrate pressing portion 53, and when the light controlling member 61 is engaged with the engaging portion 54, the upper ends of the left and right ends of the light controlling member 61 are supported. This is the part to be locked.

The packing 51 is attached to the apparatus main body 21 by a mounting member such as a screw so that the top plate 28 resists the restoring force of the packing 51, and thereby a part of the peripheral edge portion of the substrate 43 of the light source unit 41 (in this embodiment, the substrate 43 in the left-right direction) are pressed against the bottom portion 22 a of the device main body 21 by the board pressing portion 53 of the packing 51 . At this time, since the packing 51 is attached in a compressed state inside the instrument main body 21, it is possible to suppress, for example, the formation of a gap between the engaging portion 54 and the light control member 61. In the case of use, it is possible to prevent infiltration of rainwater or the like. Unlike the shape of the left substrate pressing portion 53 , the right substrate pressing portion 53 has a notch portion so as not to interfere with the connector 44 of the light source portion 41 when the substrate 43 of the light source portion 41 is placed on the substrate guide portion 23 . 53a is provided.
When a portion of the peripheral edge of the substrate 43 is pressed by the substrate pressing portion, the portion to be pressed may be other than both ends of the substrate 43. For example, only the corner portion of the substrate 43 is pressed by the substrate pressing portion. It may be configured as

The light control member 61 is a member that controls the light from the light source section 41 by reflecting and diffusing it. The light control member 61 is provided so as to close the irradiation opening 25 . The light control member 61 is a translucent (milky white) resin member. The light control member 61 has an entrance surface 62 , a light guide portion 63 , an exit surface 64 , a wall portion 65 and a locking portion 66 . The incident surface 62 is a plane extending horizontally in the left-right direction, and is formed in a horizontally long rectangular shape in a plan view. The light guide portion 63 has a concave shape and is a portion that guides light from the entrance surface 62 to the exit surface 64 . Both ends 63a, 63a in the longitudinal direction of the light guide portion 63 are arranged in the vicinity of both ends 25a, 25a in the longitudinal direction of the irradiation aperture 25 (see FIG. 8). The longitudinal central portion of the light guide portion 63 is arranged closer to the inside of the lighting fixture 11 than the longitudinal end portions 25 a of the irradiation opening 25 . The exit surface 64 extends in the left-right direction and is formed into an arch-shaped concave surface in a cross-sectional view. The direction of the optical axis L of the light source unit 41 is different from the emission direction of the emission surface 64 of the light control member 61 (arrow E in FIG. 4). As a result, the light in the direction of the optical axis L, which is the strongest light from the light source unit 41, is not directly emitted from the emission surface 64, and glare can be reduced. A perpendicular line P to the incident surface 62 of the light control member 61 intersects the direction of the optical axis L (see FIG. 4). As a result, the light in the direction of the optical axis L, which is the strongest light from the light source unit 41, does not enter the incident surface 62, and glare can be reduced.

The wall portion 65 is a plate-like portion that extends downward from the rear end portion of the light guide portion 63 in the front-rear direction. The wall portion 65 is formed so as to intersect the exit surface 64 (see FIG. 10(b)). The lower end of the wall portion 65 (the end on the output surface side) is close to the lower end of the irradiation aperture 25 in the vertical direction. A lower end portion of the wall portion 65 is formed so as to be parallel to a lower end portion of the irradiation aperture 25 . The wall portion 65 faces the wall surface W when the lighting device 11 is attached to the wall surface W. As shown in FIG. The side of the wall portion 65 facing the wall surface W is formed into a flat surface. The locking portion 66 is an eave-like portion extending linearly in the left-right direction from the upper end portions of the front and rear surfaces of the light guide portion 63 . The locking portion 66 is a portion locked to the upper end of the engaging portion 54 of the packing 51 . The light control member 61 is attached so as to close the engaging portion 54 of the packing 51 . As a result, the light control member 61 can prevent dust from adhering to the LED element 42 . In the light control member 61, the light emitted from the light source section 41 is guided downward while being reflected in the space S, and enters the light guide section 63 through the incident surface 62 and passes through the light guide section 63. Light is emitted from the emission surface 64 and emitted downward from the irradiation opening 25 of the lighting device 11 .
The shape of the light control member 61 can be appropriately changed according to the application. good too.
Further, the outer surface of the light control member 61 may be subjected to light diffusion processing such as texturing. As a result, the graininess of the LED elements 42 can be reduced, and a more uniform light emitting surface can be realized.

The mounting spring 71 is a fixing means for embedding and mounting the lighting fixture 11 in the mounting hole of the wall surface W. As shown in FIG. The mounting spring 71 is arranged on the spring mounting portion 34 of the power supply cover 33 . The mounting spring 71 is a plate spring formed by bending and curving the middle portion of a plate-shaped metal member such as stainless steel at a plurality of locations. The mounting spring 71 is a plate spring formed in a substantially V shape, and has a base end abutting against the spring mounting portion 34 of the power supply cover 33 and is fixed by a mounting member such as a screw, and a free end is attached to the light source. It extends to the instrument 11 side. When the luminaire 11 is installed in the mounting hole of the wall surface W with the mounting spring 71 bent, the mounting spring 71 presses the peripheral edge of the mounting hole by the elastic force of the mounting spring 71, which tends to spread, so that the top plate 28 is bent. The wall surface W is sandwiched between and the luminaire 11 is fixed to the wall surface W.
The shape, mounting position, number, etc. of the mounting springs are not limited to those of this embodiment. Moreover, as a method for attaching the lighting device 11 to the attachment surface, a method other than the attachment spring may be used. For example, it is possible to adopt a method of attaching to a mounting surface or a mounting frame using a mounting member such as a screw.

In the lighting fixture 11 according to the present embodiment described above, the substrate 43 on which the LED elements 42 of the light source section 41 are mounted is in contact with the back side of the fixture main body 21, which is the front cover. As a result, the heat generated by the LED element 42 can be transferred from the substrate 43 to the fixture body 21 and further dissipated from the fixture body 21 to, for example, the surrounding air on the front side. As a result, it is possible to provide the lighting fixture 11 that is small and has high heat dissipation.

Further, in the lighting fixture 11, the power supply section 31 is arranged so as to face the mounting surface side of the substrate 43 on which the LED elements 42 are mounted. When setting a distance between the light source and the power supply so that the heat generated from the light source does not affect the power supply, if the power supply is placed adjacent to the light source in the width direction, the lighting equipment will not move in the width direction. becomes large. On the other hand, by arranging the power supply unit 31 facing the mounting surface of the substrate 43 as in the lighting device 11, the substrate 43 on which the LED element 42 is mounted and the LED element 42 are mounted without increasing the size of the lighting device 11 in the width direction. A distance can be provided between the power supply unit 31 and the power supply unit 31 is less likely to be affected by the heat from the LED element 42 .

Further, the lighting fixture 11 has a top plate 28 that separates the light source part 41 and the power supply part 31 , and the fixture main body 21 and the top plate 28 form a space S that surrounds the light source part 41 . In this way, by providing the top plate 28 between the light source unit 41 and the power supply unit 31 to form the space S, the power supply parts of the power supply unit 31 and the like block the light and suppress the occurrence of shadows. do. Furthermore, since the light emitted from the LED element 42 is reflected and diffused in the space S and then emitted from the irradiation opening 25 of the lighting device 11, it is possible to obtain even irradiation light.

Further, in the lighting fixture 11 , the top plate 28 has a reflecting surface 28 d that reflects the light emitted from the light source section 41 . Thereby, the light emitted from the LED element 42 of the light source section 41 can be controlled by the reflecting surface 28d of the top plate 28 to obtain desired irradiation light.

Moreover, the lighting device 11 has a packing 51 which is an elastic member between the board 43 on which the LED element 42 is mounted and the top plate 28 , and the top plate 28 resists the restoring force of the packing 51 so that the fixture main body 21 The substrate 43 is pressed against the instrument main body 21 by the packing 51 by attaching it to the device body 21 with an attachment member such as a screw. As a result, the degree of adhesion between the substrate 43 on which the LED element 42 is mounted and the instrument body 21 can be enhanced, so that the heat transfer can be further improved, and the heat dissipation from the instrument body 21 can be enhanced.

Further, in the lighting fixture 11, the fixture main body 21 has a board guide portion 23 that guides the board 43 on which the LED element 42 is mounted on the back side to a predetermined position. Since the substrate 43 can be easily arranged at a predetermined position of the instrument main body 21, assembling efficiency is improved. Further, for example, when the shape of the substrate guide part 23 is configured in a U shape along the shape of both ends of the substrate 43 as in the present embodiment, the substrate 43 can be prevented from falling off from the instrument main body 21 . can be suppressed.

Further, in the lighting device 11, the packing 51 has a peripheral wall portion 52 along the side wall portion 22b of the device main body 21, and substrate holding portions 53 extending inward in the left-right direction from the peripheral wall portion 52. A portion of the peripheral portion of the substrate 43 (both ends of the substrate 43 in the left-right direction in this embodiment) is pressed against the instrument main body 21 by 53 . In this way, by pressing a portion of the peripheral portion of the substrate 43 by the substrate holding portions 53, 53, the adhesion between the substrate 43 and the mounting surface can be enhanced. Further, by providing the substrate pressing portions 53 so as to press only a part of the peripheral portion of the substrate 43, the substrate pressing portion 53 does not enclose the entire peripheral portion of the substrate 43. Therefore, the substrate pressing portion 53 blocks light, It is possible to suppress the occurrence of shadows. In the case of the substrate holding portions 53, 53 of the present embodiment, since the substrate holding portions are not arranged at the upper and lower end portions of the substrate 43 except for both ends, the light is emitted toward the upper and lower end sides of the substrate 43. It has a structure that facilitates light distribution.

Moreover, the lighting fixture 11 has a light control member 61 that controls light from the light source section 41 , and the packing 51 has an engaging portion 54 that engages the light control member 61 . By providing the packing 51 with the engaging portion 54 for engaging the light control member 61 in this manner, the light control member 61 can be easily positioned with respect to the packing 51 and the light control member 61 can be held. can. Therefore, since a separate attachment member for attaching the light control member 61 is not required, the number of parts can be reduced. In addition, since the packing 51 is arranged around the light control member 61, the light control member 61 is airtight with other adjacent members (for example, the instrument main body 21 and the wall surface W) via the packing 51. can be enhanced.

In addition, in the lighting device 11, the packing 51 has an overhanging portion 55 that projects outward from the outer peripheral edge of the top plate 28, and the overhanging portion 55 is in contact with the wall surface W that is the mounting surface of the lighting device 11. there is In this way, by using the protruding portion 55 of the packing 51 to abut on the wall surface W, the airtightness of the lighting fixture 11 can be ensured. Since a separate airtight packing is not required to ensure the airtightness between the lighting fixture and the wall surface W, the number of parts can be reduced and the ease of assembly can be improved. In addition, since the packing 51 is sandwiched and fixed between the fixture main body 21 and the top plate 28, when the lighting fixture is attached to the wall surface W, the packing will not come off or be displaced. Easy to install.

Further, in the lighting device 11, the projecting portion 55 has a rib 55a that abuts on the wall surface W. As shown in FIG. By having the rib 55a, the contact with the wall surface W can be ensured, and the airtightness with the wall surface W can be further improved.

Moreover, in the lighting fixture 11, the packing 51 is formed in black. By making the packing 51 black, light leakage to the outside of the lighting fixture 11 can be suppressed. That is, the transmission of light through the packing 51 is suppressed by coloring the packing 51 black with respect to the light emitted from the light source section 41 . In addition, by making the packing 51 black, the reflection by the packing 51 is suppressed, the brightness of the irradiation light emitted from the lighting fixture 11 is reduced, and the glare is suppressed. irradiating light can be obtained.

In the lighting device 11, the light source section 41 and the power supply section 31 are electrically connected by an electric wire, and the packing 51 has an electric wire holding portion 56 for holding the electric wire. The electric wire holding portion 56 holds the electric wire at a position spaced apart from the light source portion 41 (substrate 43 ), thereby suppressing displacement and movement of the electric wire within the lighting fixture 11 . Further, by arranging the wire holding portion 56 at a position where the wiring distance between the light source portion 41 and the power supply portion 31 is short, the length of the wire between the light source portion 41 and the power supply portion 31 can be shortened. .

In addition, the lighting device 11 includes a light source unit 41, a horizontally long irradiation opening 25 for irradiating the light from the light source unit 41 to the outside from the lower end of the lighting device 11, and a light beam provided so as to close the irradiation opening 25. The light control member 61 has a plane entrance surface 62 and a concave exit surface 64 with an arch-shaped cross section. Accordingly, the light emitted from the light source unit 41 is reflected and diffused by the light control member 61 and emitted to the outside from the irradiation opening 25 of the lighting device 11 . Since the exit surface 64 is formed to have a concave surface with an arch-shaped cross section, the light can be diffused to both ends in the longitudinal direction of the irradiation aperture 25 formed in a laterally long direction, thereby achieving uniform light emission with reduced glare. can do.

Further, in the lighting fixture 11 , both longitudinal end portions 63 a of the light guide portion 63 of the light control member 61 are arranged in the vicinity of the longitudinal end portions 25 a of the irradiation opening 25 . As a result, the light passing through the longitudinal ends 63 a of the light guide portion 63 of the light control member 61 is less likely to be shaded by the edges of the irradiation opening 25 .

In addition, in the lighting device 11 , the longitudinal central portion of the light guide portion 63 of the light control member 61 is arranged closer to the inside of the lighting device 11 than the longitudinal end portions 25 a of the irradiation opening 25 . As a result, the brightest part of the emission surface 64 of the light control member 61 is arranged on the inner side of the lighting fixture 11, so that glare can be reduced.

Further, in the lighting fixture 11, the direction of the optical axis L of the light source section 41 is different from the emission direction of the emission surface 64 of the light control member 61 (arrow E in FIG. 4). As a result, the light in the direction of the optical axis L, which has the highest brightness, is not directly emitted from the emission surface 64, so that glare can be reduced.

Further, in the lighting fixture 11 , the light control member 61 has at least one wall portion 65 that intersects with the emission surface 64 , and the lower end of the wall portion 65 is close to the lower end of the irradiation opening 25 in the vertical direction. is. Since the rigidity of the light control member 61 can be increased by providing the wall portion 65 in this manner, the deformation of the light control member 61 becomes difficult. Further, by suppressing the influence of unevenness of the wall surface W and the occurrence of twisting of the packing 51, the irradiation opening 25 is not blocked, and uniform light distribution can be maintained.
As described above, according to the lighting fixture 11, it is possible to provide a lighting fixture that reduces glare and achieves uniform light emission.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 10). However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist of the present invention. Moreover, the shapes and the like shown in the above embodiments are examples and are not particularly limited, and various modifications are possible within the scope of the effects of the present invention.

REFERENCE SIGNS LIST 11 luminaire 21 fixture main body 25 irradiation aperture 31 power source section 41 light source section 42 LED element 43 substrate 61 light control member 62 incident surface 64 exit surface

Claims (5)

a light source;
a horizontally long irradiation opening for irradiating the light from the light source unit to the outside from the lighting fixture;
a light control member provided to block the irradiation aperture;
The lighting fixture, wherein the light control member has a plane entrance surface and a concave exit surface with an arch-shaped cross section. 2. The lighting fixture according to claim 1, wherein both longitudinal ends of said light control member are arranged near both longitudinal ends of said irradiation aperture. 3. The lighting fixture according to claim 1, wherein the longitudinal central portion of the light control member is arranged closer to the inner side of the lighting fixture than both longitudinal ends of the irradiation aperture. The lighting fixture according to any one of claims 1 to 3, wherein the optical axis direction of the light source section and the emission direction of the emission surface of the light control member are different. The light control member has at least one wall that intersects with the exit surface,
The lighting fixture according to any one of claims 1 to 4, wherein the end of the wall on the side of the exit surface is close to the end of the irradiation opening in the vertical direction.

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