JP7325035B2 - lighting equipment - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to lighting fixtures and, more particularly, to lighting fixtures having power supplies attached to the fixture body.

As a conventional example, the lighting fixture described in Patent Document 1 will be exemplified. A lighting fixture described in Patent Document 1 (hereinafter referred to as a conventional example) includes four light source units, a power supply device that supplies power to each light source unit, a fixture body, and a reflecting member.

The instrument body has a square bottom plate and four side plates rising from the four sides of the bottom plate and is formed in a box shape. Each of the four light source units has an LED module and a light guide plate. The light guide plate is formed in a long rectangular plate shape from a synthetic resin material having translucency. Light emitted from the LED module enters the light guide plate from one of two longitudinal end faces of the light guide plate, is guided through the light guide plate, and exits from the surface of the light guide plate. These four light source units are attached to the fixture body so that the respective light guide plates face the side plates.

The reflecting member has a reflecting plate formed in a square plate shape, four reflecting side plates bent one by one from the four sides of the reflecting plate, two hooks, and a mounting spring. Each of the two hooks is formed in the shape of a diamond-shaped plate, and is arranged near two adjacent corners on the upper surface of the reflector. The mounting spring is composed of a torsion coil spring.

A power supply unit consists of a printed wiring board mounted with a power conversion circuit that converts AC power supplied from the power system into DC power, an input terminal block for the power supply, an output terminal block, etc., housed in a metal case. It is The power supply device is attached to the lower surface of the bottom plate of the instrument body.

The reflecting member is housed in the instrument body and supported by the instrument body by means of two hooks and a mounting spring.

JP 2018-22673 A

By the way, it is desired to reduce the height of lighting fixtures such as conventional examples.

An object of the present disclosure is to provide a lighting fixture capable of achieving a low profile.

A lighting fixture according to an aspect of the present disclosure includes a box-shaped fixture body with one side open, and a surface light source housed in the fixture body. The lighting fixture includes a reflecting member that has a reflecting surface that reflects light emitted from the surface light source toward the one surface and that is accommodated in the fixture body; and a power supply device that lights the surface light source. Prepare. The instrument body has a bottom portion facing the one surface and a plurality of side portions surrounding the bottom portion. The surface light source is housed in the fixture body along only one of the plurality of side portions. The reflective member has a reflective plate that has the reflective surface and faces the bottom portion of the instrument body. The reflector has a first portion adjacent to the one side portion and having a distance from the bottom portion less than a threshold value, and a second portion having the distance greater than or equal to the threshold value. At least part of the power supply device is arranged in a space sandwiched between the second portion and the bottom portion of the reflector.

The lighting fixture of the present disclosure has the effect of being able to achieve a low profile.

1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure; FIG. FIG. 2 is a perspective view of a fixture body of the same lighting fixture. FIG. 3 is a bottom view of the fixture main body of the same lighting fixture. FIG. 4 is a perspective view of a reflecting member of the same lighting fixture. FIG. 5 is a top view of a reflecting member of the same lighting fixture. FIG. 6 is a perspective view of the lighting fixture same as the above in a temporarily held state. FIG. 7 is a side view of the front end portion of the lighting fixture with the third side portion omitted. FIG. 8 is a side view of the rear end portion of the lighting fixture with the third side portion omitted. FIG. 9 is a cross-sectional view of the front end portion of the same lighting fixture. FIG. 10 is a cross-sectional view of the same lighting fixture. FIG. 11 is a bottom view of a fixture body of a modified example of the above lighting fixture. FIG. 12 is a cross-sectional view of a lighting fixture of a modified example of the same.

Hereinafter, lighting fixtures according to embodiments of the present disclosure will be described in detail with reference to the drawings. However, each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present disclosure can be achieved.

A lighting fixture 1 (hereinafter referred to as lighting fixture 1) according to the embodiment is configured to be attached to a system ceiling. A system ceiling is a suspended ceiling that combines unit ceilings, and has functions that allow ceiling panels to be placed on it and equipment such as lighting fixtures and air conditioning outlets to be installed easily (Japanese Industrial Standards A1445 "System ceiling configuration (Refer to “Methods for Testing Materials”). However, the lighting fixtures according to the embodiments of the present disclosure are not limited to lighting fixtures for system ceilings, and may be lighting fixtures attached to ceilings having structures other than system ceilings.

As shown in FIGS. 1 to 8, the lighting fixture 1 includes a fixture body 2, a light source unit 3, a reflecting member 4, a power supply device 10, two temporary holding members 5, two fixing members 6, a mounting member 7, and the like. . In the following description, the up/down, left/right, and front/rear directions indicated by arrows in FIG.

The instrument main body 2 is formed in a box shape with one surface (lower surface) open (see FIG. 2). The instrument body 2 has a bottom portion 20 formed in a quadrilateral shape and facing the lower surface, and four side portions surrounding the bottom portion 20 and connected to the four sides of the bottom portion 20 one by one. However, in the following description, the side portion connected to the front side of the bottom portion 20 is the first side portion 21, the side portion connected to the rear side of the bottom portion 20 is the second side portion 22, and the left side of the bottom portion 20 is connected. The side portion is called a third side portion 23 and the side portion connected to the right side of the bottom portion 20 is called a fourth side portion 24 .

The bottom part 20 is formed in a square frame shape by connecting a first bottom plate 201, a second bottom plate 202, a third bottom plate 203 and a fourth bottom plate 204 (see FIGS. 2 and 3). The first bottom plate 201, the second bottom plate 202, the third bottom plate 203, and the fourth bottom plate 204 are each formed of a metal plate in a rectangular shape with the same dimensions. However, the bottom portion 20 is not limited to a square, and may be a quadrilateral other than a square such as a rectangle.

Each of the first side portion 21, the second side portion 22, the third side portion 23 and the fourth side portion 24 is formed in a rectangular shape. However, the first side portion 21 is formed integrally with the first bottom plate 201 by bending a metal plate. Similarly, the second side 22 is integrally formed with the second bottom plate 202 , the third side 23 is integrally formed with the third bottom plate 203 , and the fourth side 24 is integrally formed with the fourth bottom plate 204 . ing. The first side portion 21, the second side portion 22, the third side portion 23, and the fourth side portion 24 are separate from the first bottom plate 201, the second bottom plate 202, the third bottom plate 203, and the fourth bottom plate 204, respectively. may be formed in

The light source unit 3 has a light source section 30 and a light guide plate 31 (see FIG. 7). The light source unit 30 has an LED module 300 configured by mounting a plurality of LEDs (Light Emitting Diodes) 301 on a long substrate 302, and a case 32 that houses the LED module 300 (see FIG. 7). The light guide plate 31 is formed in a rectangular flat plate shape from a translucent synthetic resin material such as acrylic resin or polycarbonate resin. The light guide plate 31 is held by the case 32 with its upper end housed in the case 32 . Inside the case 32, the plurality of LEDs 301 of the LED module 300 face the upper end surface of the light guide plate 31 (see FIG. 7). Therefore, the light emitted from the LED module 300 enters the light guide plate 31 from the upper end surface of the light guide plate 31 , travels through the light guide plate 31 , and is emitted rearward from the surface (rear surface) of the light guide plate 31 . That is, the light source unit 3 constitutes a surface light source.

The light source unit 3 is housed inside the fixture body 2 along the first side portion 21 (see FIGS. 3 and 7). Specifically, the case 32 of the light source unit 3 is attached to the front end of the lower surface of the first bottom plate 201 . The light guide plate 31 and the first side portion 21 are arranged in parallel with a small gap therebetween (see FIG. 7).

The reflecting member 4 has a reflecting plate 40, four side plates (a first side plate 41, a second side plate 42, a third side plate 43 and a fourth side plate 44), and a top plate 45 (see FIGS. 4 and 5). . The reflector 40 is formed in a square flat plate shape. In addition, the lower surface of the reflector 40 becomes the reflective surface 400 (see FIG. 1).

The first side plate 41 protrudes upward from the front side of the reflector 40 (see FIG. 4). The first side plate 41 includes a first vertical piece 411 connected to the reflector 40 , a horizontal piece 413 projecting in the horizontal direction (forward direction) from the upper end of the first vertical piece 411 , and an upward direction from the front end of the horizontal piece 413 . and a protruding second longitudinal piece 412 (see FIG. 7). In other words, the first side plate 41 is formed in a stepped shape protruding forward from the reflecting plate 40 upward. Furthermore, one hooking hole 410 consisting of a rectangular through hole is provided at each end of the first vertical piece 411 in the longitudinal direction (horizontal direction) (see FIG. 9). However, instead of the hook hole 410, a rectangular recess may be provided in the first vertical piece 411.

The second side plate 42 is formed in a rectangular flat plate shape and protrudes upward from the rear side of the reflector 40 (see FIG. 8). Each of the third side plate 43 and the fourth side plate 44 is formed in an elongated trapezoidal shape and protrudes upward from both left and right sides of the reflector 40 (see FIG. 4).

The top plate 45 is formed in a rectangular flat plate shape (see FIG. 4). One long side of the two long sides of the top plate 45 is connected to the upper end of the second side plate 42 . Two short sides of the top plate 45 are respectively connected to the rear upper end of the third side plate 43 and the rear upper end of the fourth side plate 44 (see FIG. 4). Also, the top plate 45 is provided with two hooks 450 . Each hooking portion 450 is formed by the edge of an inverted T-shaped through hole penetrating through the top plate 45 in the thickness direction (vertical direction) (see FIG. 5).

Each of the two temporary holding members 5 has a rectangular main piece 50, a hooking piece 51 connected to the lower end of the main piece 50, and a fixed piece 52 connected to the upper end of the main piece 50 (see FIG. 2). reference). The hooking piece 51 is formed in a rectangular shape wider than the main piece 50 and protrudes obliquely upward from the lower end of the main piece 50 . The fixed piece 52 is formed in a quadrilateral shape. The fixing piece 52 protrudes from the upper end of the main piece 50 along the thickness direction of the main piece 50 in the direction opposite to the hooking piece 51 .

Each of the two temporary holding members 5 is attached to the lower surface of the second bottom plate 202 of the instrument body 2 (see FIGS. 2 and 3). More specifically, on the lower surface of the second bottom plate 202, the temporary holding members 5 are arranged one by one at positions adjacent to the left and right ends behind the central square opening (see FIG. 3). However, each temporary holding member 5 is attached to the second bottom plate 202 in such a direction that the hooking piece 51 faces the second side portion 22 (see FIG. 2).

Each of the two fixing members 6 has one hook 60 and one hook spring 61 (see FIGS. 3 and 4). Each of the two hooks 60 is formed in a rhombic plate shape. The two hooks 60 are arranged one by one on the left and right ends of the front end of the upper surface of the reflector 40 . Each hook 60 stands parallel to the first side plate 41 (see FIGS. 4 and 5).

Each of the two hooking springs 61 is formed in an Ω shape by a strip-shaped metal plate having spring properties (see FIG. 9). The two hooking springs 61 are arranged one at each of the left and right ends on the lower surface of the first bottom plate 201 of the instrument main body 2 (see FIG. 3).

The hook 60 is removably inserted between the two arms of the hook spring 61 and supported by the hook spring 61 so as to be sandwiched between the two arms (see FIG. 9).

The mounting member 7 has a mounting spring 70 made of a torsion coil spring and a spring mounting member 71 (see FIG. 4). The mounting spring 70 has a coil portion 700 and a pair of arm portions 701 . Note that the tip portions of the pair of arms 701 are bent. The mounting spring 70 is mounted by a spring mounting member 71 to the front end portion at the center of the top plate 45 in the longitudinal direction (left-right direction) (see FIGS. 4 and 5).

The spring mounting member 71 has a spring support portion 710, a fixing portion 711 and a facing portion 712 (see FIGS. 4 and 5). The spring support portion 710 is formed in an inverted U shape. The spring support portion 710 is inserted through the coil portion 700 of the mounting spring 70 . The coil portion 700 is supported by the spring support portion 710 so as to be rotatable about the axis of the coil portion 700 and movable in the axial direction of the coil portion 700 . The fixing portion 711 is formed in a rectangular plate shape and provided at one end (rear end) of the spring support portion 710 . The fixed portion 711 is screwed to the top plate 45 . The opposing portion 712 protrudes from the other end (front end) of the spring support portion 710 to both the left and right sides of the spring support portion 710 along the width direction (horizontal direction) of the spring support portion 710 (see FIGS. 4 and 5). . Furthermore, the facing portion 712 protrudes above the spring support portion 710 in the vertical direction (see FIG. 4). Therefore, the facing portion 712 faces the base portion (the portion connected to the coil portion 700) of the pair of arm portions 701 of the mounting spring 70 in the front-rear direction.

A pair of arm portions 701 of the mounting spring 70 are hooked on the spring hook portions 26 provided on the bottom portion 20 (second bottom plate 202) of the instrument body 2. As shown in FIG. The spring hooking portion 26 is formed by the edge of a through hole penetrating through the second bottom plate 202 in the thickness direction (vertical direction) at the front end in the center of the second bottom plate 202 in the left-right direction (see FIG. 3). The through-hole has a square hole when viewed from above and a rectangular hole that protrudes along the diagonal direction (horizontal direction) of the square hole.

By the way, one spacer 8 is attached to each of the four corners of the inner bottom surface (lower surface of the bottom part 20) of the instrument body 2, that is, the left and right ends of the bottom surface of the first bottom plate 201 and the left and right ends of the bottom surface of the second bottom plate 202, respectively. (see Figures 2 and 3).

Each of these four spacers 8 has a trapezoidal opposing piece 80 , a first side piece 81 protruding from one side (first side) of two parallel sides of the opposing piece 80 , and two parallel sides of the opposing piece 80 . and a second side piece 82 projecting from the other side (second side) (see FIG. 2). Each spacer 8 has a fixed piece 84 protruding from the tip (upper end) of the second side piece 82 on the side opposite to the opposing piece 80, and a third side piece protruding from the tip of the fixed piece 84 parallel to the second side piece 82. 83. However, the opposing piece 80, the first side piece 81, the second side piece 82, the third side piece 83, and the fixed piece 84 are preferably integrally formed of a metal plate.

The opposing piece 80 has two screw holes 800 passing through the opposing piece 80 in the thickness direction (vertical direction). The two screw holes 800 are provided one by one at both ends of the first side in the longitudinal direction so as to be aligned along the first side of the opposing piece 80 (see FIGS. 2 and 3).

Each spacer 8 is attached to the bottom portion 20 by screwing the fixing piece 84 to the first bottom plate 201 or the second bottom plate 202 while the first side piece 81 is in contact with the third side portion 23 or the fourth side portion 24 . installed. A space S1 is formed between the opposing piece 80 of the spacer 8 and the inner bottom surface of the instrument body 2 (see FIG. 9). Also, the fixed pieces 84 of the two spacers 8 attached to both ends of the first bottom plate 201 are screwed to the first bottom plate 201 together with one hook spring 61 . That is, each arm portion 701 of the hook spring 61 faces the second side piece 82 and the third side piece 83 along the bending direction (horizontal direction) (see FIG. 9).

A power supply device 10, a signal conversion device 12, a power terminal block 13, and a signal terminal block 14 are attached to the lower surface of the bottom portion 20 (fourth bottom plate 204) of the fixture body 2 (see FIGS. 2 and 3).

The power supply device 10 supplies a DC current to the LED module 300 of the light source unit 3 to light the LED module 300 . The power supply device 10 has a printed circuit board 104 and a metal case 103 that houses the printed circuit board 104 (see FIGS. 2 and 3). The printed circuit board 104 is configured by mounting a power conversion circuit for converting AC power supplied from a power system into DC power, a power connector 100, a signal connector 101, an output connector 102, and the like. there is The power connector 100 is electrically connected to the power terminal block 13 via electric wires. The signal connector 101 is electrically connected to the signal converter 12 via an electric wire. The output connector 102 is electrically connected to the light source section 30 of the light source unit 3 via two electric wires 11 .

The signal conversion device 12 is electrically connected to a signal line through a signal terminal block 14 and converts a pulse width modulation (PWM) dimming signal transmitted by the signal line into a DC voltage signal. The power conversion circuit of the power supply device 10 increases or decreases the output (output current) according to the voltage level of the voltage signal converted by the signal conversion device 12, that is, the dimming level indicated by the dimming signal. It is configured.

Here, the fourth bottom plate 204 is provided with two wire insertion holes 2041 and 2042 (see FIG. 3). The two wire insertion holes 2041 and 2042 are provided at both ends of the fourth bottom plate 204 in the longitudinal direction (front-rear direction). A power line to which AC power is supplied from the power system is inserted through the wire insertion hole 2041 on the front side. A signal wire is inserted through the rear wire insertion hole 2042 . However, the signal line may be inserted through the wire insertion hole 2041 on the front side, and the power line may be inserted through the wire insertion hole 2042 on the rear side.

Next, the construction procedure of the lighting fixture 1 will be described. First, a worker who performs construction work attaches the fixture body 2 from which the reflecting member 4 has been removed to the system ceiling. That is, the operator attaches the hook fittings 25 (see FIGS. 2 and 3) provided on the outer surfaces of the third side portion 23 and the fourth side portion 24, respectively, to the two T-bars constituting the system ceiling. The fixture body 2 is attached to the system ceiling by hooking it on the upper part.

Subsequently, the operator electrically connects the power line drawn from one of the wire insertion holes 2041 of the fourth bottom plate 204 to the power terminal block 13, and connects the signal line drawn from the other wire insertion hole 2042 to the signal terminal block. 14 electrically.

Next, the operator attaches the reflecting member 4 to the instrument main body 2 . First, the worker hooks the hooking pieces 51 of the pair of temporary holding members 5 to the hooking portions 450 of the top plate 45 . That is, the reflecting member 4 is temporarily held by the instrument main body 2 by the temporary holding member 5 . Further, the operator hooks the tip portions of the pair of arms 701 of the mounting spring 70 to the spring hooking portions 26 of the bottom portion 20 (second bottom plate 202) of the instrument main body 2 (see FIG. 6). Then, the operator pushes up the reflecting member 4 and accommodates the reflecting member 4 inside the instrument main body 2 (the space surrounded by the bottom portion 20 and the four side portions). Then, the pair of arm portions 701 of the mounting spring 70 extend outward while protruding through the spring hooking portion 26 to the upper surface side of the second bottom plate 202, and the root portions of the pair of arm portions 701 (portions close to the coil portion 700) extend outward. ) is caught on the spring hooking portion 26 . Further, the hooking device 60 of each of the two fixing members 6 is hooked on the hooking spring 61 . As a result, the reflecting member 4 is supported by the instrument body 2 by the spring forces of the mounting spring 70 and the two hooking springs 61 while being accommodated in the instrument body 2 (see FIG. 1). At this time, the reflecting member 4 has four side plates (the first side plate 41, the second side plate 42, the third side plate 43, and the fourth side plate 44), each of which has its upper end brought into contact with the four spacers 8, so that the device main body 2 is determined (see FIGS. 7 and 8). As described above, the construction work of the lighting fixture 1 is completed.

By the way, the reflector 40 has a first portion 401 whose distance L1 from the bottom portion 20 is less than the threshold and a second portion 402 whose distance L1 is equal to or greater than the threshold (see FIG. 10). The threshold is preferably, for example, the distance L1 at the position where the vertical width (height) of the third side plate 43 and the fourth side plate 44 is halved (the position of the dashed line X1 in FIG. 10). However, the threshold is not limited to the above values.

10, and the second portion 402 of the reflector 40 is located on the left side (backward) of the dashed line X1 in FIG. ).

In the lighting device 1, at least part of the power supply device 10 is arranged in the space S1 (the space surrounded by the dashed line in FIG. 10) sandwiched between the second portion 402 of the reflector 40 and the bottom portion 20. That is, when the first portion 401 and the second portion 402 of the reflector 40 are compared, the distance L1 between the second portion 402 and the bottom portion 20 of the device main body 2 is relatively large. Therefore, in the luminaire 1, the space S1 sandwiched between the second portion 402 and the bottom portion 20 is wider than the space sandwiched between the first portion 401 and the bottom portion 20 of the reflector 40, particularly in the height direction. (vertical direction). Therefore, in the lighting fixture 1, the heights of the first side plate 41, the second side plate 42, the third side plate 43, and the fourth side plate 44 of the reflecting member 4 are reduced by arranging at least part of the power supply device 10 in the space S1. (vertical width) can be shortened. As a result, it is possible to reduce the height of the lighting fixture 1 (reduce the size of the height).

Here, the reflecting member 4 has the reflecting plate 40 formed in a flat plate shape, and is accommodated in the instrument main body 2 in a state in which the reflecting plate 40 is inclined with respect to the bottom portion 20 (see FIG. 10). Therefore, in the luminaire 1 , the distance L1 between the reflector 40 and the bottom 20 can be changed continuously according to the inclination of the reflector 40 with respect to the bottom 20 of the fixture body 2 .

Next, modifications of the lighting fixture 1 according to the embodiment will be described with reference to FIGS. 11 and 12. FIG. However, since the basic configuration of the lighting fixture 1 of the modified example is the same as that of the lighting fixture 1 according to the embodiment, the same reference numerals are given to the common constituent elements, and illustration and description thereof will be omitted as appropriate.

As shown in FIGS. 11 and 12, the lighting fixture 1 of the modified example differs in the mounting position of the power supply device 10 with respect to the bottom portion 20 of the fixture body 2 . That is, the power supply device 10 is attached to the lower surface of the second bottom plate 202 of the bottom part 20 so that the longitudinal direction of the case 103 is aligned with the longitudinal direction (horizontal direction) of the second bottom plate 202 . In addition, in the lighting fixture 1 of the modified example, not only the power supply device 10 but also the signal conversion device 12 are attached to the second bottom plate 202 . However, in the lighting fixture 1 of the modified example, when the power supply device 10 is attached to the second bottom plate 202, the second bottom plate 202 is extended along the lateral direction (front-rear direction). The power supply device 10 and the signal conversion device 12 are attached to the lower surface of the second bottom plate 202 in front of the pair of temporary holding members 5 and the spring hooking portion 26 .

Thus, in the lighting device 1 of the modified example, the entire power supply device 10 is arranged in the space S1 sandwiched between the second portion 402 of the reflector 40 and the bottom portion 20 (see FIG. 12). Therefore, the lighting fixture 1 of a modification can achieve further reduction in height.

In addition, in the lighting device 1 of the embodiment and the modified example, the reflector 40 does not necessarily have to be formed in a rectangular flat plate shape. For example, the reflector 40 may be formed in a shape other than the flat plate shape, such as a convex curved surface shape, a concave curved surface shape, and a pyramidal surface shape.

As described above, the lighting fixture (1) according to the first aspect includes a box-shaped fixture body (2) with one surface (lower surface) open, and a surface light source (light source) housed in the fixture body (2). unit 3). A lighting fixture (1) according to a first aspect is a reflecting member that has a reflecting surface (400) that reflects light emitted from a surface light source toward one surface and is housed in a fixture body (2). (4) and a power supply device (10) for lighting the surface light source. The device body (2) has a bottom (20) facing one surface and a plurality of side portions (first side portion 21, second side portion 22, third side portion 23 and fourth side portion 23) surrounding the bottom portion (20). side 24). The surface light source is housed in the fixture body (2) along one side (first side 21) of the plurality of sides. The reflecting member (4) has a reflecting surface (400) and a reflecting plate (40) facing the bottom (20) of the instrument body (2). The reflector (40) has a first portion (401) whose distance (L1) from the bottom (20) is less than a threshold and a second portion (402) whose distance (L1) is greater than or equal to the threshold. have At least part of the power supply (10) is placed in a space (S1) sandwiched between the second part (402) and the bottom (20) of the reflector (40).

The lighting fixture (1) according to the first aspect can be made low-profile by arranging at least part of the power supply device (10) in a relatively large space (S1).

A lighting fixture (1) according to the second aspect can be realized by a combination with the first aspect. In the lighting fixture (1) according to the second aspect, the reflector (40) is preferably formed in a flat plate shape. The reflecting member (4) is preferably housed in the device body (2) with the reflecting plate (40) tilted with respect to the bottom (20).

In the lighting fixture (1) according to the second aspect, the distance (L1) between the reflector (40) and the bottom (20) depends on the inclination of the reflector (40) with respect to the bottom (20) of the fixture body (2). can be changed continuously.

A lighting fixture (1) according to the third aspect can be realized by a combination with the second aspect. In the lighting fixture (1) according to the third aspect, the power supply device (10) has a rectangular printed circuit board (104) and an elongated case (103) that houses the printed circuit board (104). is preferred. The reflector (40) is preferably slanted away from the bottom (20) from the first section (401) towards the second section (402). The power supply device (10) is preferably arranged in the space (S1) so that the longitudinal direction of the case (103) intersects the inclination direction of the reflector (40).

The luminaire (1) according to the third aspect can be further reduced in height by arranging a larger portion of the power supply device (10) in the space (S1).

A lighting fixture (1) according to the fourth aspect can be realized by a combination with the third aspect. In the lighting fixture (1) according to the fourth aspect, the case (103) is preferably attached to the bottom (20) while being placed in the space (S1).

The lighting fixture (1) according to the fourth aspect is attached to the bottom (20) with the case (103) disposed in the space (S1), so that the entire power supply device (10) is placed in the space (S1). will be placed in As a result, the height of the lighting fixture (1) according to the fourth aspect can be further reduced.

1 lighting fixture 2 fixture main body 3 light source unit (area light source)
4 reflective member 10 power supply device 20 bottom 21 first side (side)
22 second side (side)
23 third side (side)
24 fourth side (side)
40 reflector 103 case 104 printed circuit board 400 reflective surface 401 first part 402 second part S1 space L1 distance

Claims (4)

a box-shaped device body with one side open;
a surface light source housed in the fixture body;
a reflecting member that has a reflecting surface that reflects the light emitted from the surface light source toward the one surface and that is housed in the instrument body;
a power supply device for lighting the surface light source;
with
The instrument body is
a bottom facing the one surface;
a plurality of sides surrounding the bottom;
has
the surface light source is accommodated in the fixture body along only one of the plurality of side portions;
the reflecting member has the reflecting surface and a reflecting plate facing the bottom of the instrument body;
The reflector has a first portion adjacent to the one side portion and having a distance from the bottom portion less than a threshold value, and a second portion having the distance greater than or equal to the threshold value. ,
At least part of the power supply device is arranged in a space sandwiched between the second portion and the bottom portion of the reflector,
lighting equipment. The reflector is formed in a flat plate shape,
The reflecting member is housed in the instrument body with the reflecting plate inclined with respect to the bottom.
A lighting fixture according to claim 1 . The power supply device
a rectangular printed circuit board;
an elongated case containing the printed circuit board;
has
the reflector is inclined away from the bottom portion from the first portion toward the second portion;
The power supply device is arranged in the space so that the longitudinal direction of the case intersects the inclination direction of the reflector.
3. A lighting fixture according to claim 2. The case is attached to the bottom part while being arranged in the space,
4. A lighting fixture according to claim 3.

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