WO2021229877A1

WO2021229877A1 - Lighting fixture, assembling method of lighting fixture, and elevator car

Info

Publication number: WO2021229877A1
Application number: PCT/JP2021/005222
Authority: WO
Inventors: 祐芽横堀; 真行近藤
Original assignee: 三菱電機株式会社
Priority date: 2020-05-15
Filing date: 2021-02-12
Publication date: 2021-11-18
Also published as: CN115461575A; JPWO2021229877A1; JP7353477B2

Abstract

This lighting fixture (1) is provided with: a light-emitting substrate (2) which has light-emitting parts (20) for emitting light; a heatsink (3) which has a bottom section (3a) where the light-emitting substrate (2) is disposed, a cylindrical sidewall section (3b) for accommodating the light-emitting substrate (2), and heat dissipation fins (3c) formed on an outer peripheral surface of the sidewall section (3b), and which dissipates heat generated from the light-emitting parts (20); a reflective member (4) which is accommodated in the sidewall section (3b) and disposed so as to surround the light-emitting parts (20), and which reflects the light; and a case (6) which is at least partially accommodated in the sidewall section (3b). Given that a direction in which the light is emitted is defined as an emission direction, and the opposite direction to the emission direction as a counter-emission direction, the sidewall section (3b) is formed to extend toward the counter-emission direction with respect to the bottom section (3a), the light-emitting substrate (2) is disposed on the emission direction side of the bottom section (3a), the reflective member (4) is disposed on the emission direction side of the light-emitting substrate (2), the case (6) is disposed on the emission direction side of the reflective member (4), and fastening members (7) for fastening the bottom section (3a) and the case (6) together are disposed to penetrate through the reflective member (4) from the counter-emission direction side of the bottom section (3a).

Description

Lighting equipment, lighting equipment assembly method and elevator basket

This disclosure relates to lighting fixtures, lighting fixture assembly methods, and elevator baskets.

A luminaire with a light emitting part and a reflector housed inside a cylindrical fixture body and a large number of radiating fins integrally formed on the outer peripheral surface and the bottom surface of the fixture body is disclosed (for example, a patent). See Document 1). The light emitting module constituting the light emitting unit mounts an LED (Light Emitting Diode) chip as a solid light emitting element. The reflector is arranged so as to face the light emitting module, reflects light toward the emission direction, and has a plurality of reflecting portions that set the light distribution angle to a predetermined angle.

Japanese Unexamined Patent Publication No. 2014-11257

However, in the technique of Patent Document 1, the light emitting module and the reflector are fastened to the instrument main body from the light emitting direction side, but in order to ensure workability at the time of assembly, the light emitting module and the reflector are used. When trying to fasten from the light emission direction side, it is necessary to widen the distance between the heat radiation fins extending from the fixture body or thin out the heat radiation fins, and there is a problem that the temperature of the light emitting module rises due to the decrease in the heat radiation area. there were.

The present disclosure has been made to solve the above-mentioned problems, and an object of the present invention is to provide a lighting fixture that can secure heat dissipation efficiency, a method of assembling the lighting fixture, and an elevator car.

The lighting fixture according to the present disclosure includes a light emitting substrate having a light emitting portion that emits light, a bottom portion on which the light emitting substrate is arranged, a tubular side wall portion accommodating the light emitting substrate, and heat dissipation formed on the outer peripheral surface of the side wall portion. A heat sink that has fins and dissipates heat generated from the light emitting part, and a reflective member that is arranged so as to surround the light emitting part and reflects light, and at least a part thereof is housed in the side wall part. When the direction in which light is emitted is the emission direction and the direction opposite to the emission direction is the reflection direction, the side wall portion is formed so as to extend toward the reflection direction side from the bottom portion, and is a light emitting substrate. Is arranged on the emission direction side of the bottom, the reflection member is arranged on the emission direction side of the light emitting substrate, the case is arranged on the emission direction side of the reflection member, and the bottom and the fastening member for fastening the case are on the bottom. It is arranged through the reflective member from the counter-emission direction side.

The method for assembling the lighting fixture according to the present disclosure is the lighting fixture described in the present disclosure, and penetrates from the emission direction side to the reflection direction side at the corresponding positions of the light emitting substrate, the bottom of the heat sink, the reflection member, and the case. It is a method of assembling a lighting fixture having a through hole, and a guide pin provided at a position corresponding to the through hole is provided in each through hole in the order of a heat sink, a light emitting substrate, a reflective member, and a case from the counter-emission direction side. Insert the assembly jig you have and pull out the assembly jig from the combined heat sink, light emitting board, reflective member and case through hole to the heat sink, light emitting board, reflective member and case. In the process, the assembly jig is pulled out from the through hole, and the fastening member is inserted into the through hole of the case from the counter-emission direction side of the bottom into the through hole of the heat sink, light emitting board, reflective member and case as they are combined. It has a step of fastening a bottom portion and a case, and fixing a heat sink, a light emitting substrate, a reflective member, and a case.

The elevator car according to the present disclosure is an elevator car provided with a car floor, an elevator ceiling, a wall, and a door, and is provided with the lighting equipment described in the present disclosure installed on the elevator ceiling, and the elevator ceiling is. It has a ceiling plate portion and a ceiling plate metal arranged opposite to each other, the ceiling plate metal is arranged on the side of the car floor rather than the ceiling plate portion, and a space portion is formed between the ceiling plate portion and the ceiling plate metal. The lighting fixture is installed in the space portion through the mounting hole formed in the ceiling plate metal and does not protrude from the ceiling plate portion.

According to this disclosure, heat dissipation efficiency can be ensured.

An exploded perspective view showing a lighting fixture according to the first embodiment. The schematic diagram which shows the lighting fixture which concerns on Embodiment 1. FIG. The perspective view which shows the lighting fixture which concerns on Embodiment 1. FIG. An exploded perspective view showing a lighting fixture according to the first embodiment. FIG. 6 is a schematic vertical sectional view showing a lighting fixture according to the first embodiment. An exploded perspective view showing a lighting fixture according to the first embodiment. The schematic diagram which shows the other lighting fixtures which concerns on Embodiment 1. FIG. An exploded perspective view showing a lighting fixture according to the second embodiment. The schematic diagram which shows the lighting fixture which concerns on Embodiment 2. The perspective view which shows the lighting fixture which concerns on Embodiment 2. An exploded perspective view showing a lighting fixture according to the third embodiment. The schematic diagram which shows the lighting fixture which concerns on Embodiment 3. FIG. The schematic diagram which shows the elevator car which concerns on Embodiment 4. The schematic diagram which shows the ceiling of the elevator car which concerns on Embodiment 4.

Embodiment 1.
In the drawings shown below, the relative dimensional relationships and shapes of the constituent members may differ from those of the actual lighting fixture 1. Also, for ease of understanding, terms indicating direction and position (eg, "top", "bottom", "right", "left", "front", "rear", etc.) are used as appropriate. However, these notations are described only for convenience of explanation, and do not limit the arrangement and orientation of each component member. Further, in the following drawings, those having the same reference numerals are the same or equivalent thereof.

FIG. 1 is an exploded perspective view showing the lighting fixture 1 according to the first embodiment. FIG. 2 is a schematic schematic diagram showing the lighting fixture 1 according to the first embodiment. In FIG. 2, the left side of the paper surface from the central axis L1 of the lighting equipment 1 is a schematic vertical cross-sectional view showing the lighting equipment 1, and the right side of the paper surface is a side view showing the lighting equipment 1. FIG. 3 is a perspective view showing the lighting fixture 1 according to the first embodiment.

In FIGS. 1 to 3, the direction connecting the mounting springs 8 (described later) arranged opposite to each other is defined as the X axis, and the direction orthogonal to the X axis is defined as the Y axis. The Z-axis indicates the height direction of the luminaire 1. The X-axis, Y-axis, and Z-axis are orthogonal to each other. The XY plane and the installation surface (for example, the ceiling) on which the luminaire 1 is installed are horizontal, and the XZ plane and the YZ plane and the installation surface on which the luminaire 1 is installed are vertical. The directions of the X-axis, Y-axis, and Z-axis arrows are positive, and are indicated as + X-axis, + Y-axis, and + Z-axis, respectively. The directions opposite to the directions of the arrows on the X-axis, Y-axis, and Z-axis are defined as negative directions, and are indicated as -X-axis, -Y-axis, and -Z-axis, respectively. These are the same in the following drawings. Hereinafter, the + Z-axis direction in which light is emitted is referred to as an emission direction, and the direction opposite to the emission direction is referred to as a counter-emission direction.

The lighting fixture 1 includes a light emitting substrate 2, a heat sink 3, a reflecting member 4, and a case 6. The luminaire 1 further includes a diffuser plate 5, a fastening member 7, a mounting spring 8, and a spring fastening member 9. Hereinafter, the lighting fixture 1 will be described in detail.

The light emitting substrate 2 has a light emitting unit 20 and a substrate 21. The light emitting unit 20 is, for example, an SMD (Surface Mount Device). The light emitting unit 20 is mounted on the substrate 21. The light emitting unit 20 has an LED chip (blue LED) that emits blue light of about 440 nm to 480 nm. The light emitting unit 20 employs a single-chip system that emits white light by combining a blue LED and a yellow phosphor which is a complementary color thereof. The LED chip of the light emitting unit 20 is coated or filled with a sealing member (not shown in FIGS. 1 to 3) in which a yellow phosphor is dispersed or mixed. A part of the blue light emitted from the LED chip excites a yellow phosphor and is converted into yellow light. The blue light and the yellow light converted from the blue light are mixed, and the white light is emitted from the light emitting unit 20.

The substrate 21 is a plate-shaped glass epoxy substrate. A circuit pattern for power supply is formed on the substrate 21. In addition to the light emitting unit 20, elements such as a diode (not shown in FIG. 1) are mounted on the substrate 21 as needed. The substrate 21 is connected to a power source (not shown in FIG. 1) via wires and connectors.

The heat sink 3 includes a bottom portion 3a, a cylindrical side wall portion 3b, and a heat radiation fin 3c. A light emitting substrate 2 is arranged on the bottom portion 3a. The side wall portion 3b extends toward the counter-emission direction with respect to the bottom portion 3a. In other words, the bottom portion 3a is arranged on the exit direction side with respect to the end portion of the side wall portion 3b on the counter-emission direction side. As a result, the heat dissipation area of the lighting fixture 1 can be increased. The heat radiation fins 3c are arranged on the outer peripheral surface of the side wall portion 3b. The heat radiation fin 3c extends from the end portion of the side wall portion 3b on the emission direction side to the end portion on the counter-emission direction side. The heat radiation fin 3c has a plate shape. The heat sink 3 houses the light emitting substrate 2, the reflective member 4 described later, and the diffuser plate 5. The heat sink 3 further houses at least a portion of the case 6. The heat sink 3 is made of aluminum.

The reflective member 4 is arranged on the emission direction side of the light emitting substrate 2. In the reflective member 4, the surface that reflects light is referred to as a reflective surface 4a. The reflective member 4 is arranged so as to surround the light emitting unit 20. As a result, the reflective member 4 reflects the light emitted from the light emitting unit 20 to change the direction of the light. The reflective member 4 is formed of ABS (Acrylonitrile butadiene style) resin.

The diffuser plate 5 diffuses the light emitted from the light emitting unit 20 to alleviate the irradiation image and improve the color unevenness of the irradiation surface. The diffusion plate 5 is arranged on the emission direction side of the light emitting substrate 2 and the reflection member 4. By arranging the diffuser plate 5, the light emitting substrate 2 can be protected. The diffuser plate 5 is made of acrylic resin.

Case 6 changes the direction of light that has passed through the diffuser plate 5. The case 6 is arranged on the emission direction side of the diffusion plate 5. Case 6 is made of ABS resin.

The mounting spring 8 has a leaf spring shape. The mounting spring 8 is mounted on the outer peripheral surface of the side wall portion 3b of the heat sink 3 by the spring fastening member 9. In the luminaire 1, the pair of mounting springs 8 are mounted on the outer peripheral surface of the side wall portion 3b so as to face each other. The spring fastening member 9 is arranged on the exit direction side of the side wall portion 3b on the counter-emission direction side and on the anti-emission direction side of the bottom portion 3a. The mounting spring 8 is inserted into the mounting hole in a state of being bent along the outer peripheral surface of the side wall portion 3b of the heat sink 3. When the mounting spring 8 is inserted into the mounting hole on the ceiling, it tries to return to the shape as shown in FIG. 3 again by its own elastic force. Therefore, the mounting spring 8 is pressed against the inner surface of the mounting hole, and the luminaire 1 is fixed to the mounting hole by the force thereof.

As shown in FIG. 2, the light emitting substrate 2, the bottom portion 3a of the heat sink 3, the reflective member 4, and the diffuser plate 5 have through holes or notches at positions through which the fastening member 7 penetrates (hereinafter, collectively referred to as “through holes””. ). The through holes formed in the light emitting substrate 2, the bottom portion 3a of the heat sink 3, the reflective member 4, and the diffuser plate 5 are provided outside the reflective member 4 with respect to the reflective surface 4a.

The case 6 has a boss portion 6a, and a nut 6b is inserted into the boss portion 6a. By inserting the fastening member 7 into the nut 6b, the light emitting substrate 2, the heat sink 3, the reflecting member 4, and the diffusion plate 5 are sandwiched by the case 6 from the emission direction side and by the fastening member 7 from the anti-emission direction side. It is fixed. The light emitting substrate 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6 are fastened and positioned by the fastening member 7. The fastening member 7 coincides with or substantially coincides with the central axis L1 of the light emitting substrate 2 and the central axes of the reflective member 4 and the case 6. The fastening member 7 is a screw member. As shown in FIG. 2, the tip of the head of the fastening member 7 is located closer to the exit direction side than the end portion of the side wall portion 3b on the counter-emission direction side. That is, the end portion of the side wall portion 3b on the counter-emission direction side extends toward the counter-emission direction side from the end portion of the fastening member 7 on the counter-emission direction side.

Here, the method of assembling the lighting fixture 1 will be described. FIG. 4 is an exploded perspective view showing the lighting fixture 1 according to the first embodiment. FIG. 5 is a schematic vertical sectional view showing the lighting fixture 1 according to the first embodiment. FIG. 6 is an exploded perspective view showing the lighting fixture 1 according to the first embodiment.

The lighting fixture 1 is assembled using the assembly jig 600 shown in FIGS. 4 and 5. The assembly jig 600 has a base 600a and a guide pin 600b extending in a direction orthogonal to the direction in which the base 600a extends. The base 600a is, for example, plate-shaped. The guide pin 600b is provided on the base 600a at a position corresponding to each through hole of the light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffusion plate 5, and the case 6. The guide pin 600b is inserted into each through hole of the light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffuser plate 5, and the case 6 at the time of assembling the lighting fixture 1. In the lighting fixture 1, since the light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffuser plate 5, and the case 6 each have three through holes, an example in which three guide pins 600b are used will be shown. The number of guide pins 600b is not limited to this. Further, the number of guide pins 600b may be less than the number of through holes as long as the central axes of the light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffusion plate 5 and the case 6 can be aligned. The term "matching the central axes" includes both cases where the central axes of the light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffuser plate 5 and the case 6 are aligned or substantially aligned.

First, the guide pin 600b of the assembly jig 600 is inserted into the through holes of the light emitting substrate 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6 from the counter-emission direction side. As shown in FIG. 4, for example, the assembly jig 600 is arranged so that the base 600a of the assembly jig 600 is on the bottom surface. Then, as shown by the arrows in FIG. 4, the heat sink 3, the light emitting board 2, and the heat sink 2, while inserting the guide pins 600b into the through holes in the order of the heat sink 3, the light emitting board 2, the reflecting member 4, the diffusion plate 5, and the case 6. The reflective member 4, the diffuser plate 5, and the case 6 may be stacked. A guide pin 600b is inserted into the through holes of the light emitting board 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6, and the light emitting board 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6 are combined. Is shown in FIG. By inserting the guide pin 600b into each through hole, the guide pin 600b serves as a guide, and the central axes of the light emitting substrate 2, the heat sink 3, the reflection member 4, the diffusion plate 5, and the case 6 can be aligned. At this time, the lighting fixture 1 may sandwich the heat sink 3 and the case 6 from the outer peripheral side with a temporary fixing tool such as a clip, or the light emitting substrate 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6 may be attached to each other. For example, a temporary fixing portion having an uneven shape may be provided, which can be temporarily fixed when each of them is combined. As a result, as described later, even if the guide pin 600b of the assembly jig 600 is pulled out from each through hole, the lighting fixture 1 has a light emitting substrate 2, a heat sink 3, a reflective member 4, a diffusion plate 5, and a case 6. It is possible to suppress the deviation of the central axis of.

Next, the guide pin 600b of the assembly jig 600 is pulled out from the through holes of the combined light emitting substrate 2, the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6 in the direction of the anti-emission direction. As shown in FIG. 5, for example, the combined light emitting substrate 2, the heat sink 3, the reflecting member 4, the diffusion plate 5, and the case 6 are arranged so that the base 600a of the assembly jig 600 faces the upper surface. The guide pin 600b of the assembly jig 600 may be pulled out from the through hole.

Then, as shown in FIG. 6, the fastening member 7 is inserted from the through hole formed in the heat sink 3 into the through hole of the case 6 from the counter-emission direction side, the heat sink 3 and the case 6 are fastened, and the light emitting substrate is fastened. 2. Fix the heat sink 3, the reflective member 4, the diffuser plate 5, and the case 6. Finally, the mounting spring 8 is arranged on the side wall portion 3b of the heat sink 3 and fastened to the heat sink 3 using the spring fastening member 9. Here, the mounting spring 8 is provided with a hole portion 8a penetrating in a direction intersecting the extending direction of the side wall portion 3b, and the outer periphery of the case 6 is provided at a position corresponding to the hole portion 8a of the mounting spring 8. A convex portion 6c protruding outward of the case 6 is provided. By inserting the convex portion 6c of the case 6 into the hole portion 8a of the mounting spring 8, even if the nut 6b inserted into the boss portion 6a comes off during the use of the lighting fixture 1, the convex portion 6c Since the case 6 is supported by the mounting spring 8, the case 6 can be suppressed from falling.

As described above, the lighting fixture 1 includes a light emitting substrate 2 having a light emitting portion 20 that emits light, a bottom portion 3a on which the light emitting substrate 2 is arranged, a tubular side wall portion 3b that accommodates the light emitting substrate 2, and a side wall portion 3b. It has a heat radiating fin 3c formed on the outer peripheral surface of the light emitting portion 20, and is housed in a heat insulating portion 3 that dissipates heat generated from the light emitting portion 20 and a side wall portion 3b, and is arranged so as to surround the light emitting portion 20 to reflect light. When the reflective member 4 and the case 6 in which at least a part thereof is housed in the side wall portion 3b are provided, and the direction in which the light is emitted is the emission direction and the direction opposite to the emission direction is the counter-emission direction, the side wall portion 3b is provided. The light emitting substrate 2 is arranged on the emission direction side of the bottom 3a, the reflective member 4 is arranged on the emission direction side of the light emitting substrate 2, and the case 6 is formed by extending from the bottom 3a to the emission direction side. , The fastening member 7 for fastening the bottom portion 3a and the case 6 is arranged on the emission direction side of the reflection member 4, and is arranged through the reflection member 4 from the reflection direction side of the bottom portion 3a.

With the above configuration, the lighting fixture 1 can secure heat dissipation efficiency.

Further, in the luminaire 1, the side wall portion 3b extends toward the counter-emission direction side from the bottom portion 3a, and the tip of the head of the fastening member 7 is closer than the end portion of the side wall portion 3b on the counter-emission direction side. , Located on the emission direction side. Therefore, the side wall portion 3b can protect the fastening member 7 from an external impact. As a result, even if an operator accidentally comes into contact with the luminaire 1 during the inspection of the luminaire 1, it becomes difficult for the impact to be transmitted to the fastening member 7.

Further, since the side wall portion 3b extends in the counter-emission direction side from the bottom portion 3a, when the mounting spring 8 is attached to the outer peripheral surface of the side wall portion 3b, the spring fastening member 9 is moved toward the counter-emission direction side from the bottom portion 3a. Can be concluded. As a result, the spring fastening member 9 can suppress blocking the light emitted from the light emitting substrate 2, and the lighting fixture 1 can be miniaturized.

Further, as described above, in the lighting equipment described in Japanese Patent Application Laid-Open No. 2014-112567, when the light emitting module and the reflector are to be fastened from the light emission direction side, it is necessary to thin out the heat radiation fins, and the heat radiation area needs to be thinned out. There is a problem that the temperature of the light emitting module rises due to the decrease in the amount of light. In this luminaire, in order to increase the heat radiating area, it is necessary to extend the heat radiating fins toward the counter-emission direction, and the length (total length) of the luminaire in the Z-axis direction becomes long. However, in the lighting fixture 1, heat dissipation efficiency is ensured by the side wall portion 3b extending in the direction opposite to the bottom portion 3a, and heat can be dissipated by the side wall portion 3b and the heat radiation fins 3c. The total length of the luminaire 1 can be shortened while maintaining the heat dissipation efficiency.

Further, the light emitting substrate 2, the bottom portion 3a of the heat sink 3, the reflective member 4, and the diffuser plate 5 each have a through hole for the fastening member 7 to penetrate outside the reflective member 4 with respect to the reflective surface 4a of the reflective member 4. By having the light, the light emitted from the light emitting unit 20 can reach the diffuser plate 5 without being blocked by the through hole. Further, since the member or the like is not provided inside the reflecting surface 4a of the reflecting member 4, the lighting fixture 1 has a high degree of freedom in the number or arrangement of the light emitting portions 20. Therefore, even if variations such as changing the number or arrangement of the light emitting units 20 are added, the lighting fixture 1 does not need to change the shape of the reflective member 4, can suppress the mold cost, and is diverse. It can correspond to various variations.

In the first embodiment, the lighting fixture 1 may have a heat conductive sheet 22 which is a heat radiating member having heat dissipation. FIG. 7 is a schematic schematic diagram showing another lighting fixture 1a according to the first embodiment. FIG. 7 shows an enlarged portion of the luminaire 1a surrounded by the broken line frame.

The heat conductive sheet 22 is arranged between the light emitting substrate 2 and the bottom portion 3a of the heat sink. The heat conductive sheet 22 is a highly heat conductive and flexible material, and is, for example, a heat-dissipating silicone sheet having a thickness of 0.2 mm or more and 2.0 mm or less. Further, if the surface of the heat conductive sheet 22 has adhesiveness, the surface of the light emitting substrate 2 and the bottom portion 3a of the heat sink 3 are in close contact with each other, so that the lighting fixture 1a can improve the heat dissipation.

The heat conductive sheet 22 has a through hole through which the fastening member 7 penetrates, like the light emitting substrate 2, the bottom 3a of the heat sink 3, the reflective member 4, and the diffuser plate 5. Further, the heat conductive sheet 22 has a light emitting substrate 2, a heat sink 3, and reflection by the case 6 from the emission direction side and by the fastening member 7 from the anti-emission direction side by inserting the fastening member 7 into the nut 6b of the case 6. It is sandwiched and fixed together with the member 4 and the diffusion plate 5.

Although the heat-dissipating silicone sheet is shown as the material of the heat-conducting sheet 22, the material of the heat-conducting sheet 22 may be a material containing acrylic as a main component, a material containing carbon fiber, or the like. Further, if the material of the heat conductive sheet 22 is made of a material having a property of softening due to a phase change with increasing temperature and improving the adhesion, the luminaire 1a can further improve the heat dissipation.

Further, since the heat conductive sheet 22 is a flexible material, when it is arranged between the light emitting substrate 2 and the bottom portion 3a of the heat sink 3, it is crushed by the light emitting substrate 2 and the bottom portion 3a. At this time, if the amount of warpage of the light emitting substrate 2 is set to be equal to or less than the crushing allowance of the heat conductive sheet 22, the adhesion between the bottom portion 3a of the heat sink 3 and the heat conductive sheet 22 is ensured on the entire surface of the light emitting substrate 2. The lighting fixture 1a can ensure heat dissipation.

Further, in the first embodiment, an example is shown in which the entire circumference of the tubular side wall portion 3b extends toward the counter-emission direction with respect to the bottom portion 3a, but the end of the side wall portion 3b on the counter-emission direction side. A part of the portion may be extended from the bottom portion 3a toward the counter-emission direction.

Further, in the first embodiment, a lens member may be provided instead of the diffuser plate 5. The lens unit is, for example, a flat plate having a lens at a position facing the light emitting unit 20. By providing the lens member, the luminaire 1 can collect the light emitted from the light emitting unit 20 and control the light distribution of the luminaire 1.

Embodiment 2.
FIG. 8 is an exploded perspective view showing the lighting fixture 10 according to the second embodiment. FIG. 9 is a schematic schematic diagram showing the lighting fixture 10 according to the second embodiment. In FIG. 9, the left side of the paper surface from the central axis L1 of the lighting equipment 10 is a schematic vertical cross-sectional view showing the lighting equipment 10, and the right side of the paper surface is a side view showing the lighting equipment 10. FIG. 10 is a perspective view showing the lighting fixture 10 according to the second embodiment.

The luminaire 10 is different from the luminaire 1 in that the heat sink 30 has a plate-shaped radiating fin 30c and a radiating fin 30d (bottom radiating fin) formed by extending from the radiating fin 30c to the bottom 30a. The heat radiating fin 30d extends from the end portion of the side wall portion 30b on the counter-emission direction side toward the center of the bottom portion 30a.

Further, the lighting fixture 10 is different from the lighting fixture 1 in that a part of the end portion of the side wall portion 30b on the counter-emission direction side is formed so as to extend toward the counter-emission direction side from the bottom portion 30a. In the bottom portion 30a, the heat radiation fins 30d cannot be arranged at the portion where the fastening member 7 is arranged. Therefore, in the luminaire 10, the end portion of the side wall portion 30b between the heat radiation fins 30d sandwiching the fastening member 7 on the counter-emission direction side is extended toward the counter-emission direction side from the bottom portion 30a. At this time, among the ends of the side wall portion 30b on the rebound direction side, the tip of the head of the fastening member 7 is located on the exit direction side with respect to the end portion where the bottom portion 30a also extends in the rebound direction side. Further, the spring fastening member 9 is arranged on the exit direction side of the end portion of the side wall portion 30b on the anti-emission direction side and on the anti-emission direction side of the bottom portion 30a.

With the above configuration, the lighting fixture 10 can secure heat dissipation efficiency.

Further, in the lighting fixture 10, a part of the side wall portion 30b extends toward the counter-emission direction side from the bottom portion 30a, and the tip of the head of the fastening member 7 is the end of the side wall portion 30b on the counter-emission direction side. It is located on the emission direction side of the unit. That is, the end portion of the fastening member 7 on the counter-emission direction side does not protrude from the side wall portion 30b toward the counter-emission direction. Therefore, the side wall portion 30b can protect the fastening member 7 from an external impact.

Further, since the side wall portion 30b extends in the counter-emission direction side from the bottom portion 30a, when the mounting spring 8 is attached to the outer peripheral surface of the side wall portion 30b, the spring fastening member 9 is moved toward the counter-emission direction side from the bottom portion 30a. Can be concluded. As a result, the spring fastening member 9 can suppress blocking the light emitted from the light emitting substrate 2, and the lighting fixture 1 can be miniaturized.

Further, the heat dissipation efficiency can be ensured by forming the end portion of the side wall portion 30b between the heat radiation fins 30d sandwiching the fastening member 7 on the counter-emission direction side with respect to the bottom portion 30a.

Further, the lighting fixture 10 can further improve the heat dissipation efficiency by forming the heat dissipation fins 30d on the bottom portion 30a.

Further, in the lighting fixture 1, heat dissipation efficiency is ensured by the side wall portion 30b extending in the direction opposite to the bottom portion 30a, and heat can be dissipated by the side wall portion 30b and the heat radiation fins 30c. Compared with the luminaire described in No., the total length of the luminaire 1 can be shortened while maintaining the heat dissipation efficiency.

Embodiment 3.
FIG. 11 is an exploded perspective view showing the lighting fixture 100 according to the third embodiment. FIG. 12 is a schematic schematic diagram showing the lighting fixture 100 according to the third embodiment. In FIG. 12, the left side of the paper surface from the central axis L1 of the lighting equipment 100 is a schematic vertical cross-sectional view showing the lighting equipment 100, and the right side of the paper surface is a side view showing the lighting equipment 100. In FIGS. 11 and 12, the configurations with the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding configurations, and thus detailed description thereof will be omitted. Hereinafter, the details of the difference between the lighting fixture 100 and the

lighting fixtures

1, 1a and 10 will be described.

In the lighting fixture 100, the light emitting substrate 200 has a light emitting unit 201 and a substrate 202. Here, the through hole formed in the substrate 202 is referred to as a through hole 202a. The light emitting unit 201 is, for example, a COB (Chip On Board). That is, in the light emitting unit 201, a large number of LED chips (blue LEDs) that emit blue light of about 440 nm to 480 nm are directly mounted on the substrate 202, and a sealing member in which a yellow phosphor is dispersed or mixed (FIG. 11 and (not shown in FIG. 12) are coated or filled. A part of the blue light emitted from the LED chip excites a yellow phosphor and is converted into yellow light. The blue light and the yellow light converted from the blue light are mixed, and the white light is emitted from the light emitting unit 201.

The reflective member 400 of the luminaire 100 has a boss portion 400b at one end of a cylindrical through hole 400a extending from the emission direction side to the reverse emission direction side, and has a boss portion 400c at the other end. Different from 4. The boss portion 400b is formed on the lens 500 side, which will be described later, and the boss portion 400c is formed on the light emitting substrate 200 side. The boss portion 400b is combined with the through hole 500a of the lens 500, and the boss portion 400c is combined with the through hole 202a of the light emitting substrate 200. As a result, the central axis of the light emitting substrate 200 and the central axis of the lens 500 are positioned by the reflecting member 400.

The luminaire 100 differs from the

luminaires

1, 1a and 10 in that it has a lens 500, for example a Fresnel lens, instead of the diffuser 5. The lens 500 is arranged on the emission direction side of the reflection member 400. The reflective member 400 and the lens 500 are formed of, for example, an acrylic resin.

With the above configuration, the lighting fixture 100 can secure heat dissipation efficiency.

Further, in the third embodiment, since the light emitting unit 201 is provided, the area of the portion that emits light is larger than that of the light emitting unit 20, and one light emitting unit 201 can emit a large amount of light.

Further, in order to realize the desired optical performance, it is necessary that the central axes of the light emitting unit 201 and the lens 500 are aligned, but in the third embodiment, the light emitting unit 400 is provided in the through hole 400a of the reflective member 400. The boss portion 400b and the boss portion 400c have a role as a positioning portion for aligning the central axis of the light emitting unit 201 with the central axis of the lens 500. Therefore, as compared with the case where the through hole and the positioning portion are provided separately, the luminaire 100 can suppress the increase in size and can realize the desired optical performance.

Further, in the third embodiment, by having the lens 500, the light emitted from the light emitting unit 201 can be collected and the light distribution of the luminaire 100 can be controlled. Further, the luminaire 100 can protect the light emitting substrate 200 by arranging the lens 500.

Embodiment 4.
FIG. 13 is a schematic schematic diagram showing the elevator car 2000 according to the fourth embodiment. FIG. 14 is a schematic schematic diagram showing the ceiling of the elevator car 2000 according to the fourth embodiment (hereinafter, referred to as “elevator ceiling portion 210”). The elevator car 2000 includes an elevator ceiling portion 210, a car floor portion 211, a wall portion 212, and a door portion 213.

The elevator ceiling portion 210 has a ceiling plate portion 210a and a ceiling sheet metal 210b. The ceiling plate portion 210a and the ceiling sheet metal 210b are arranged so as to face each other. A space portion is formed between the ceiling plate portion 210a and the ceiling sheet metal 210b. The ceiling sheet metal 210b is arranged on the car floor portion 211 side. The lighting fixture 1 is installed in the space between the ceiling plate portion 210a and the ceiling plate metal 210b. As shown in FIG. 14, it is desirable that the height h of the space portion in the Z-axis direction is narrow, for example, about 50 mm. The luminaire 1 is inserted into a mounting hole 220 formed in the ceiling sheet metal 210b, and is supported by the mounting hole 220 by a force that the mounting spring 8 tries to open by an elastic force. The ceiling sheet metal 210b corresponds to the above-mentioned installation surface.

For example, when the lighting fixture described in Japanese Patent Application Laid-Open No. 2014-112567 is installed in the space portion of the present disclosure, the lighting fixture penetrates the ceiling plate portion because the entire length of the fixture may not fit in the space portion. Need to make a hole for it. In addition, when inspecting the elevator car, the worker works on the ceiling plate, so it is necessary to cover and protect the lighting equipment that protrudes from the ceiling plate so that the worker does not come into direct contact with it. There is.

However, since the total length of the luminaire 1 can be shortened, the luminaire 1 can be installed in the space of the elevator car 2000 without the luminaire 1 protruding from the ceiling plate portion 210a.

Further, since the lighting fixture 1 can be installed without protruding from the ceiling plate portion 210a, it is not necessary to make a hole in the ceiling plate portion 210a for passing the lighting fixture 1, and it is not necessary to arrange a cover for covering the lighting fixture 1. Thereby, the workability when the worker performs the work on the ceiling plate portion 210a can be improved.

Further, since the side wall portion 3b extends in the direction opposite to the bottom portion 3a to protect the head of the fastening member 7, the workability when the worker works on the ceiling plate portion 210a can be improved.

In the fourth embodiment, an example in which the lighting fixture 1 is fixed to the ceiling sheet metal 210b by the mounting spring 8 is shown, but a fixing method such as screwing to the ceiling sheet metal 210b using a fixing metal fitting is used. It may be different.

Further, in the fourth embodiment, the example in which the lighting fixture 1 is installed in the elevator car 2000 is shown, but the

lighting fixtures

1a, 10 or 100 may be used.

Although a glass epoxy substrate is used as the substrate 21 in the present disclosure, a metal substrate such as aluminum or iron may be used, or a paper phenol material may be used.

Further, in the present disclosure, an example in which the heat sink 3 is formed of aluminum is shown, but it may be formed of a metal or alloy having good thermal conductivity such as copper. Further, the heat sink 3 may be formed of a resin material or the like having good thermal conductivity.

Further, in the present disclosure, an example in which the heat radiation fins 3c and the heat radiation fins 30c are formed into a plate shape is shown, but the present invention is not limited to this.

Further, in the present disclosure, an example is shown in which the heat radiation fins 3c extend from the end portion of the outer peripheral surface of the side wall portion 3b on the emission direction side to the end portion on the anti-emission direction side, but on the outer peripheral surface of the side wall portion 3b. It may be formed in any way. Further, although the example in which the heat radiation fins 30c extend from the end portion of the outer peripheral surface of the side wall portion 30b on the emission direction side to the bottom portion 30a is shown, any method may be formed on the outer peripheral surface of the side wall portion 30b. However, there are no restrictions on the shape on the bottom 30a.

Further, in the present disclosure, an example in which the reflective member 4 is formed of ABS resin is shown, but for example, polypropylene, PBT (polybutylene terephrate) resin, or the like may be formed of a resin material colored in white. Further, the reflective member 4 may be formed of a metal having a high reflectance such as aluminum.

Further, in the present disclosure, an example in which the diffusion plate 5 is formed of an acrylic resin is shown. For example, a transparent resin material such as a polycarbonate resin is formed by mixing fine particles with a material having diffusivity. You may. Further, the diffusing plate 5 may be formed of a transparent material such as an acrylic resin, a polycarbonate resin, or glass by imparting minute irregularities to the surface of the transparent material so as to have diffusivity. Further, the diffusing plate 5 is formed of a transparent material such as acrylic resin, polycarbonate resin, or glass to provide diffusivity between the diffusing plate 5 and the reflective member 4, or between the diffusing plate 5 and the case 6. The diffuser plate 5 may be configured to have diffusivity by sandwiching the sheet to be held. Further, the diffusing plate 5 may be formed by placing a diffusible thin film on the surface of a transparent material such as an acrylic resin, a polycarbonate resin, or glass.

Further, in the present disclosure, an example in which the case 6 is formed of ABS resin is shown, but for example, polypropylene, PBT resin, or the like may be formed of a colored resin material. Further, the case 6 may be formed of a metal having a high reflectance such as aluminum. Further, the surface state of the case 6 may be smooth or may have minute irregularities for diffusing light.

Further, in the present disclosure, an example in which the mounting spring 8 is in the shape of a leaf spring is shown, but it may be in the shape of a wire spring.

Further, in the present disclosure, an example in which an LED chip is used as the light emitting unit 20 and the light emitting unit 201 is shown, but for example, an LD (Laser Diode) chip may be used. Further, it may be a light emitting element having a large area of one light emitting surface.

Further, in the present disclosure, an example in which the light emitting unit 20 is a single-chip system in which white light is emitted by a blue LED and a yellow phosphor is shown, but a single chip in which a blue LED, a red phosphor, and a green phosphor are mixed is shown. It may be a method. Further, a multi-chip system in which a red LED, a green LED, and a blue LED are mixed may be used.

Further, in the present disclosure, there are no particular restrictions on the arrangement of the LED chips of the light emitting substrate 2.

Further, in the present disclosure, the outer shapes of the side wall portion 3b (side wall portion 30b), the reflective member 4, and the case 6 and the shape of the luminaire 1 may be circular, elliptical, or polygonal, and are not particularly restricted. No.

Further, in the present disclosure, a heat conductive material such as heat conductive grease or a heat conductive sheet, or an adhesive may be interposed between the light emitting substrate 2 and the bottom 3a (bottom 30a). Whether or not to use these adhesives may be determined based on the heat resistant temperature, life, strength, etc. of the LED chip or circuit element used.

Further, in the present disclosure, within the scope of the invention, each embodiment can be freely combined, and each embodiment can be appropriately modified or omitted.

1, 10, 100 Lighting fixtures, 2, 200 light emitting boards, 3, 30 heat sinks,
4,400 reflective member, 5 diffuser plate, 6 case, 7 fastening member, 8 mounting spring,
9 Spring fastening member, 20, 201 light emitting part, 21, 202 substrate, 22 heat conductive sheet,
210 Elevator ceiling, 211 car floor, 212 wall, 213 door,
220 mounting holes, 500 lenses, 600 assembly jigs, 2000 elevator baskets.

Claims

A light emitting board having a light emitting part that emits light,
A heat sink having a bottom portion on which the light emitting substrate is arranged, a cylindrical side wall portion accommodating the light emitting substrate, and heat radiation fins formed on the outer peripheral surface of the side wall portion to dissipate heat generated from the light emitting portion.
A reflective member that is housed in the side wall portion and is arranged so as to surround the light emitting portion and reflects the light.
A case in which at least a part thereof is housed in the side wall portion is provided.
When the direction in which the light is emitted is the emission direction and the direction opposite to the emission direction is the counter-emission direction, the side wall portion is formed so as to extend toward the anti-emission direction side from the bottom portion.
The light emitting substrate is arranged on the emission direction side of the bottom portion, the reflection member is arranged on the emission direction side of the light emitting substrate, and the case is arranged on the emission direction side of the reflection member.
The fastening member for fastening the bottom portion and the case is arranged from the counter-emission direction side of the bottom portion through the reflection member.
lighting equipment.
In the side wall portion, the entire circumference of the end portion on the counter-emission direction side extends toward the counter-emission direction side from the bottom portion.
The lighting fixture according to claim 1.
The heat sink has a bottom radiating fin formed by extending from the radiating fin to the bottom.
The lighting fixture according to claim 1.
Further equipped with a heat dissipation member with heat dissipation,
The heat radiating member is sandwiched between the light emitting substrate and the bottom of the heat sink.
The lighting fixture according to any one of claims 1 to 3.
The end portion of the side wall portion on the rebound direction side extends toward the rebound direction side from the end portion of the fastening member on the rebound direction side.
The lighting fixture according to any one of claims 1 to 4.
It is provided with a diffuser plate which is arranged on the emission direction side of the reflection member, is arranged on the anti-emission direction side of the case, and diffuses the light emitted from the light emitting portion.
The lighting fixture according to any one of claims 1 to 5.
A mounting spring is provided which is fastened to the outer peripheral surface of the side wall portion in the direction opposite to the bottom portion and fixes the luminaire to the mounting hole on the installation surface.
The lighting fixture according to any one of claims 1 to 6.
The mounting spring has a hole penetrating in a direction intersecting the extending direction of the side wall portion, and the case projects outward of the case at a position corresponding to the hole portion of the mounting spring. Has a convex part,
The convex portion is inserted into the hole portion of the mounting spring.
The lighting fixture according to claim 7.
The luminaire according to claim 1, wherein a through hole penetrates from the emission direction side to the reflection direction side at each corresponding position of the light emitting substrate, the bottom of the heat sink, the reflection member, and the case. It is a method of assembling the lighting equipment having the above.
An assembly jig having a guide pin provided at a position corresponding to the through hole is inserted into each of the through holes in the order of the heat sink, the light emitting board, the reflection member, and the case from the counter-emission direction side. , The step of combining the heat sink, the light emitting substrate, the reflective member, and the case,
A step of pulling out the assembly jig from the combined heat sink, the light emitting substrate, the reflective member, and the through hole of the case toward the counter-emission direction side.
The assembly jig is pulled out from the through hole, and the through hole of the case is inserted into the through hole of the heat sink, the light emitting board, the reflection member, and the case as they are combined, from the counter-emission direction side of the bottom. It has a step of inserting a fastening member into, fastening the bottom portion and the case, and fixing the heat sink, the light emitting substrate, the reflective member, and the case.
How to assemble a lighting fixture.
An elevator car with a car floor, elevator ceiling, walls, and doors.
The lighting equipment according to any one of claims 1 to 8 installed on the ceiling of the elevator is provided.
The elevator ceiling portion has a ceiling plate portion and a ceiling sheet metal arranged so as to face each other.
The ceiling sheet metal is arranged on the floor side of the car with respect to the ceiling plate portion, a space portion is formed between the ceiling plate portion and the ceiling sheet metal, and the lighting fixture is formed on the ceiling sheet metal. It is installed in the space from the mounting hole and does not protrude from the ceiling plate.
Elevator basket.