Lighting fixtures

Abstract

The objective of this disclosure is to easily accommodate the increase in wiring that electrically connects the light source unit and the power supply unit. [Solution] The lighting fixture A1 comprises a long light source unit 2, a long fixture body 1 installed on the mounting surface S1 and holding the light source unit 2, and a power supply device 40 arranged in the space enclosed by the fixture body 1 and the light source unit 2. The light source unit 2 has a light source module 20, a long support member 21, a first connecting member 24A, and a second connecting member 24B. The first connecting member 24A and the second connecting member 24B are arranged in the longitudinal direction of the light source unit 2 so as to sandwich the power supply device 40. The first connecting member 24A is connected to a first input terminal along the thickness direction of the support member 21. The second connecting member 24B is connected to a second input terminal along the thickness direction of the support member 21.

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture including a long light source unit and a long fixture body that holds the light source unit.

Background Art

[0002] As a conventional example, a lighting device (lighting fixture) described in Patent Document 1 is exemplified. The lighting device described in Patent Document 1 (hereinafter referred to as a conventional example) includes a long light source unit having a light emitting element serving as a light source, and a long lighting fixture having a fixture body to which the light source unit is attached.

[0003] The lighting fixture has a fixture body and a power supply device. The power supply device converts AC power supplied from a commercial power supply into DC power and lights the light source unit. The power supply device has a case having a substantially rectangular parallelepiped shape and a lighting circuit disposed inside the case. In addition, on the output side of the power supply device, a power supply side electric wire that is detachably connected to the light source side electric wire of the light source unit by a connector or the like is provided.

[0004] The light source unit is formed in a long shape, partially housed in the fixture body, and detachably attached to the fixture body. The light source unit has a light emitting module, a frame, a cover, and an end cap.

[0005] The light emitting module is formed in a longer shape than the frame, and has a plurality of light emitting elements, a rectangular substrate on which the plurality of light emitting elements are linearly mounted, and a light source side electric wire provided at one end side in the longitudinal direction of the substrate.

[0006] That is, the conventional example constitutes an electric circuit that electrically connects the light emitting module and the lighting circuit by the power supply side electric wire and connector provided on the output side of the power supply device and the light source side electric wire and connector provided at one end side in the longitudinal direction of the substrate constituting the light emitting module.

Prior Art Documents

Patent Documents

[0007] [Patent Document 1] Japanese Patent Publication No. 2020-24806 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] Incidentally, in conventional examples, if the number or type of light-emitting elements mounted on the substrate of a light-emitting module increases, the number of light-source-side wires provided on the substrate may also increase.

[0009] However, in conventional examples, increasing the number of light source wires provided on one end of the substrate in the longitudinal direction requires extensive measures such as widening the gap between one end of the substrate and the end cap.

[0010] The purpose of this disclosure is to provide a lighting fixture that can easily accommodate an increase in the amount of wiring that electrically connects the light source unit and the power supply unit. [Means for solving the problem]

[0011] A lighting fixture according to one aspect of the present disclosure comprises a long light source unit, a long fixture body installed on a mounting surface and holding the light source unit, and a power supply device disposed in the space enclosed by the fixture body and the light source unit. The light source unit includes a light source module, a support member formed in the shape of a long plate and supporting the light source module, a first connecting member electrically connected to a first input terminal of the light source module, and a second connecting member electrically connected to a second input terminal of the light source module. The power supply device is electrically connected to the first input terminal and the second input terminal via the first connecting member and the second connecting member. The first connecting member and the second connecting member are arranged to sandwich the power supply device in the longitudinal direction of the light source unit. The first connecting member is connected to the first input terminal along the thickness direction of the support member. The second connecting member is connected to the second input terminal along the thickness direction of the support member. [Effects of the Invention]

[0012] The lighting fixtures of this disclosure have the advantage of being able to easily accommodate an increase in the amount of wiring that electrically connects the light source unit and the power supply. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view of a lighting fixture according to an embodiment of this disclosure. [Figure 2] Figure 2 is an exploded perspective view of the same lighting fixture, partially broken. [Figure 3] Figure 3 is a cross-sectional view of the same lighting fixture. [Figure 4] Figure 4 is a front view of the fixture body of the same lighting fixture. [Figure 5] Figure 5 is a perspective view of the same lighting fixture, with a portion of the fixture body omitted. [Figure 6] Figure 6 is a front view of the same lighting fixture, with a portion of the fixture body omitted. [Figure 7] Figure 7 is a front view of the same lighting fixture, with a portion of the fixture body omitted. [Figure 8] Figure 8 is a partially omitted perspective view showing another configuration of the fixture body in the same lighting fixture. [Figure 9] Figure 9A is a perspective view of the main part of the same lighting fixture, including the first connecting member of the light source module. Figure 9B is a perspective view of the main part of the same lighting fixture, including the second connecting member of the light source module. [Figure 10] Figure 10 is an exploded perspective view of the main part of the light source module in the same lighting fixture. [Figure 11] Figure 11 is an exploded perspective view of the main part of the light source module in the same lighting fixture. [Figure 12] Figure 12 is a plan view of the light source unit in the same lighting fixture. [Figure 13] Figure 13 is a circuit block diagram of the power supply and communication unit in the same lighting fixture. [Figure 14] Figure 14 is a bottom view of the power supply unit and the communication unit in the lighting fixture described above. [Figure 15] Figure 15 is a perspective view of the main part of the power supply unit in the lighting fixture described above. [Figure 16] Figure 16 is a perspective view of the main parts of the power supply unit and the communication unit in the lighting fixture described above. [Figure 17] Figure 17A is a perspective view of the main part of the light source unit in the lighting fixture described above. Figure 17B is an exploded perspective view of the main part of the light source unit in the lighting fixture described above. [Figure 18] Figure 18A is a cross-sectional view of the left end of the lighting fixture described above. Figure 18B is a cross-sectional view of the right end of the lighting fixture described above. [Figure 19] Figure 19 is a cross-sectional view of the main part of the lighting fixture described above. [Figure 20] Figure 20A is a perspective view of the communication unit in the lighting fixture described above as seen obliquely from above. Figure 20B is a perspective view of the communication unit in the lighting fixture described above as seen obliquely from below. [Figure 21] Figure 21 is an exploded perspective view of the communication unit in the lighting fixture described above. [Figure 22] Figure 22 is a plan view of the lighting fixture described above with the case cover of the communication unit omitted. [Figure 23] Figure 23 is an exploded perspective view of a modified example of the lighting fixture described above. [Figure 24] Figure 24A is a perspective view of the main part of the light source unit in a modified example of the lighting fixture described above. Figure 24B is an exploded perspective view of the main part of the light source unit in a modified example of the lighting fixture described above.

Embodiments for Carrying Out the Invention

[0014] Hereinafter, lighting fixtures according to embodiments of this disclosure will be described in detail with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0015] (1) Overview The lighting fixture A1 according to the embodiment of this disclosure comprises a long light source unit 2, a long fixture body 1 installed on an installation surface S1 and holding the light source unit 2, and a power supply device 40 arranged in the space K1 enclosed by the fixture body 1 and the light source unit 2 (see Figures 1-3). The fixture body 1 is installed on an installation surface S1 such as a ceiling, wall, or floor and holds the light source unit 2 (Figure 2 shows the case where the ceiling is the installation surface S1).

[0016] The light source unit 2 includes a light source module 20, a long support member 21 that supports the light source module 20, a first connecting member 24A, and a second connecting member 24B (see Figure 2). The light source module 20 is, for example, an LED module having a plurality of light-emitting elements (LEDs 201) and a substrate 200 on which the plurality of LEDs 201 are mounted in a single row on the mounting surface. Conductors (printed wiring) that electrically connect the plurality of LEDs 201 are formed on the mounting surface (bottom surface in Figure 2) of the substrate 200.

[0017] The first connecting member 24A is electrically connected to the first input terminal 204 of the light source module 20. The second connecting member 24B is electrically connected to the second input terminal 205 of the light source module 20. The first input terminal 204 and the second input terminal 205 are, for example, lands formed on the mounting surface of the substrate 200.

[0018] The power supply unit 40 is electrically connected to the first input terminal 204 and the second input terminal 205 via the first connecting member 24A and the second connecting member 24B. The first connecting member 24A and the second connecting member 24B are arranged to sandwich the power supply unit 40 in the longitudinal direction of the light source unit 2 (see Figure 2).

[0019] However, compared to the conventional example where the light source unit and the power supply unit are electrically connected with a single connecting member, the lighting fixture A1 according to this embodiment can easily accommodate an increase in the amount of wiring electrically connecting the light source unit 2 and the power supply unit 40 by arranging the first connecting member 24A and the second connecting member 24B so as to sandwich the power supply unit 40 in the longitudinal direction of the light source unit 2.

[0020] (2)Details As shown in Figures 1 and 2, the lighting fixture A1 according to this embodiment (hereinafter referred to as lighting fixture A1) comprises a light source unit 2, a fixture body 1, a control unit (communication unit 3), and a power supply unit 4.

[0021] Lighting fixture A1 is directly mounted, for example, to the ceiling of an office in an office building. However, the location where lighting fixture A1 is installed is not limited to the ceiling of an office; it may also be installed on the walls or floors of offices and other living spaces. In the following explanation, unless otherwise specified, the up / down, front / back, and left / right directions indicated by arrows in Figure 2 are defined as the up / down, front / back, and left / right directions of lighting fixture A1.

[0022] (2-1) Main body of the device The device body 1 has a main part 10 formed in the shape of a long rectangle, a pair of side parts 11 that protrude upward from both ends (front and rear) along the longitudinal direction (left and right direction) of the main part 10, and a passage part 13 through which radio waves can pass (see Figures 2-5). The pair of side parts 11 are each formed in the shape of a long rectangle. The main part 10 and the pair of side parts 11 are formed integrally and in a trough shape by bending a long metal plate.

[0023] The main section 10 has two power supply holes 111, two mounting holes 112, and two hooking holes 113 (see Figures 2 and 4). All three types of holes (power supply holes 111, mounting holes 112, and hooking holes 113) penetrate the main section 10 in the thickness direction (vertical direction). The surrounding portions of the two mounting holes 112 in the main section 10 are formed in the shape of a frustoconical cone, each projecting upward from the upper surface of the main section 10.

[0024] Furthermore, multiple protrusions 110 are provided on the upper surface of the main part 10, spaced apart along the longitudinal direction of the main part 10 (see Figure 3). Each of these multiple protrusions 110 is formed in a hemispherical shape and protrudes upward. When the device body 1 is attached to the installation surface S1, these multiple protrusions 110 contact the installation surface S1 with their tips, thereby forming a gap G1 between the installation surface S1 and the main part 10 (see Figure 3).

[0025] Power supply holes 111 are provided at each end of the main unit 10 in the longitudinal direction (left-right direction) (see Figures 2 and 4). Each power supply hole 111 is circular. A bushing is fitted into each power supply hole 111. The bushing is formed in a cylindrical shape from a synthetic resin material. For example, a power cable C1 supplied from an external power source P1 such as a commercial power grid (see Figure 8) or another lighting fixture is inserted through the power supply hole 111 at the left end. On the other hand, a power cable C2 for supplying power to another lighting fixture is inserted through the power supply hole 111 at the right end. In the following description, power cable C1 may be referred to as the first power supply cable C1, and power cable C2 may be referred to as the second power supply cable C2.

[0026] Here, on the lower surface of the main unit 10, one first terminal block 14A and one second terminal block 14B are attached to each end, closer to the center in the longitudinal direction than the power supply hole 111 (see Figure 4). However, the first terminal block 14A and the second terminal block 14B are terminal blocks of the same structure.

[0027] The first power cable C1 is electrically connected to the primary terminal of the first terminal block 14A (see Figure 6), and the second power cable C2 is electrically connected to the primary terminal of the second terminal block 14B (see Figure 7).

[0028] The wire 15A connected to the positive terminal of the secondary terminal of the first terminal block 14A, the wire 15B connected to the secondary terminal of the second terminal block 14B, and the wire 15C connected to the plug connector 150 are connected by a closed-end connector 151A (see Figures 6 and 7).

[0029] The wire 15D connected to the negative terminal of the secondary terminal of the first terminal block 14A, the wire 15E connected to the negative terminal of the secondary terminal of the second terminal block 14B, and the wire 15F connected to the plug connector 150 are connected by a closed-end connector 151B (see Figures 6 and 7). The two wires 15B and 15E connected to the second terminal block 14B are inserted into an insulating tube 154 (see Figures 6 and 7). In Figure 6, the two closed-end connectors 151A and 151B are shown protruding from the fixture body 1, but in reality they are housed between the pair of side parts 11 of the fixture body 1 (space K1).

[0030] The grounding wire 15G, connected to the plug connector 150, is connected to the main unit 10 via a crimp terminal 153. The two electric wires 15C and 15F connected to the plug connector 150 and the grounding wire 15G are inserted into an insulating tube 152 (see Figure 6).

[0031] Two mounting holes 112 are provided on the main part 10, one to the right of the first terminal block 14A and the other to the left of the second terminal block 14B (see Figure 4). One suspension bolt B1 protruding from the mounting surface S1 is inserted through each of these two mounting holes 112 (see Figure 2). The fixture body 1 is then fixed to the mounting surface S1 by tightening nuts N1 onto the suspension bolts B1 inserted through the mounting holes 112.

[0032] The two hooking holes 113 are round holes located closer to the center than the two mounting holes 112 (see Figures 2 and 4). The ends of two strings (not shown) for temporarily suspending the light source unit 2 are inserted into and hooked into these two hooking holes 113.

[0033] The passage section 13 is composed of a slit (opening) that runs through the device body 1 in the thickness direction along the longitudinal direction of the device body 1 (see Figures 3 and 5). By composing the passage section 13 with a slit (opening), the work efficiency of forming the passage section 13 in the device body 1 can be improved.

[0034] In this embodiment, one through section 13 is formed spanning the front end of the main section 10 and the upper end of the front side section 11, and one spanning the rear end of the main section 10 and the upper end of the rear side section 11 (see Figures 3 and 5). The longitudinal dimension (length L1) of the through section 13 is preferably at least one-quarter of the wavelength of the radio waves used as the communication medium by the communication unit 3, and less than or equal to two-thirds, with about half being the most desirable. The short-side dimension (width D1) of the through section 13 is preferably smaller (shorter) than the diameter of the electric wires (electric wires 15B, 15E) described later. For example, when the communication unit 3 uses 2.4GHz band radio waves as the communication medium, the wavelength is approximately 12cm, so the length L1 of the through section 13 is preferably 12cm ÷ 4 = 3cm or more and 6cm or less. The width D1 of the through section 13 is preferably a few millimeters. Note that the two passage sections 13 are not aligned in the longitudinal direction of the device body 1, with the rear passage section 13 positioned to the right of the front passage section 13 (see Figure 7). However, the positional relationship of the two passage sections 13 is not limited to the above positional relationship.

[0035] Incidentally, the passage portion 13 may be sealed with a sealing member 130 (see Figure 8). The sealing member 130 is preferably formed in the shape of a tape from a material that can transmit radio waves, such as a synthetic resin material such as polyethylene terephthalate resin. By sealing the passage portion 13 with a sealing member 130 made of a material that can transmit radio waves, it is possible to improve wireless communication performance through the passage portion 13 while preventing foreign matter from entering the space K1 through the passage portion 13.

[0036] (2-2) Mounting spring The fixture body 1 has two mounting springs 12. Each of the two mounting springs 12 is responsible for attaching the light source unit 2 to the fixture body 1. One mounting spring 12 is provided between the first terminal block 14A and the adjacent mounting hole 112 in the main part 10, and one between the second terminal block 14B and the adjacent mounting hole 112 (see Figures 2 and 4). Each mounting spring 12 is formed into a U-shape by bending a strip of metal plate. These two mounting springs 12 are fixed to the main part 10 by screws. Each mounting spring 12 is deformable (bendable) along the short side (front-back direction) of the fixture body 1.

[0037] (2-3) Light source unit The light source unit 2 comprises a light source module 20, a support member 21, a cover 22, a power supply unit 4, a communication unit 3, and a pair of end members 23 (see Figure 2).

[0038] (2-3-1) Light source module The light source module 20 includes two substrates 200, a plurality of light-emitting elements (LEDs 201) mounted on the mounting surface 200A (bottom surface) of each substrate 200, and one connecting member (first connecting member 24A and second connecting member 24B) provided on each substrate 200 (see Figure 2). Each substrate 200 is formed in a long rectangular shape. Conductors (not shown) for connecting the plurality of LEDs 201 are formed on the mounting surface 200A of each substrate 200. The conductors of the two substrates 200 are connected via connectors mounted on the longitudinal ends of each substrate 200 (the longitudinal center of the light source module 20).

[0039] Multiple LED201s include, for example, a warm white LED for illumination and a daylight white LED for illumination. In the following description, the warm white LED for illumination may be referred to as LED201A, and the daylight white LED for illumination may be referred to as LED201B.

[0040] Multiple LEDs 201 are arranged so that LEDs 201 of different light-emitting colors (warm white LEDs 201A and daylight white LEDs 201B) are arranged alternately in a single row along the longitudinal direction of the mounting surface 200A of the substrate 200 (see Figures 2, 9, and 10). Multiple LEDs 201 are connected in series and parallel to each other by conductors formed on the mounting surface 200A of the substrate 200. In other words, the light source module 20 includes an array of warm white LEDs and an array of daylight white LEDs.

[0041] The multiple LEDs 201 may consist only of white LEDs of the same color for illumination, or they may include three or more white LEDs for illumination. Alternatively, the multiple LEDs 201 may include LEDs with light-emitting colors other than white, such as red, green, or blue. Here, the area on the mounting surface 200A of the substrate 200 where the multiple LEDs 201 are mounted and where conductors electrically connecting these multiple LEDs 201 are formed is called the mounting area 202 (see Figures 9 and 10). The mounting area 202 is located approximately in the center of the short-side direction (front-to-back direction) on the mounting surface 200A of the substrate 200 (see Figures 9 and 10).

[0042] The first connecting member 24A is a component that electrically connects the power supply unit 40 (the positive terminals of the first constant current circuit 401 and the second constant current circuit 402, respectively) and the positive terminals of the light source module 20 (the positive terminals of the incandescent LED array and the positive terminals of the daylight LED array). The first connecting member 24A is mounted on the right end of the right-side circuit board 200 (see Figure 2).

[0043] The second connecting member 24B is a component that electrically connects the power supply unit 40 (the negative terminals of the first constant current circuit 401 and the second constant current circuit 402, respectively) and the negative terminals of the light source module 20 (the negative terminals of the incandescent LED array and the negative terminals of the daylight LED array). The second connecting member 24B is mounted on the left end of the left circuit board 200 (see Figure 2).

[0044] The first connecting member 24A includes a connector having a first receptacle 240A and a first plug 241A (see Figure 10). The first receptacle 240A has a housing 242 formed in the shape of a long box. The housing 242 has a bottomed rectangular tubular socket portion 2420 with an open top surface and a fixing portion 2421 provided on the lower surface of the socket portion 2420 (see Figures 9-11). The socket portion 2420 accommodates a pair of contact pins 2422 (see Figure 11). The fixing portion 2421 is formed in the shape of a long flat plate that extends beyond the outside of the socket portion 2420 when viewed from the vertical direction (thickness direction of the substrate 200) (see Figure 10). The housing 242 (socket portion 2420 and fixing portion 2421) is made of an electrically insulating material such as synthetic resin. The color of the exterior of the housing 242 is preferably white.

[0045] A pair of terminals 245 are provided in the center of one side of the fixed portion 2421 along its longitudinal direction (see Figure 9). The pair of terminals 245 are spaced apart along the longitudinal direction of the fixed portion 2421. The pair of terminals 245 are electrically connected one-to-one with a pair of contact pins 2422 housed in the socket portion 2420. In addition, reinforcing portions 2423, each consisting of two metal plates, are embedded at both ends of the fixed portion 2421 along its longitudinal direction by insert molding (see Figure 9).

[0046] The first receptacle 240A is attached to the substrate 200 by inserting the socket portion 2420 through the through hole 203 from the mounting surface 200A side of the substrate 200 and soldering the two reinforcing portions 2423 to the mounting surface 200A of the substrate 200. Here, the first receptacle 240A is attached to the substrate 200 so that the longitudinal direction of the housing 242 is parallel to the longitudinal direction (left-right direction) of the substrate 200 (see Figure 9). Furthermore, on the mounting surface 200A of the substrate 200, the first receptacle 240A is soldered one by one to the pair of first input terminals 204 provided in the mounting area 202 adjacent to the through hole 203 and to the pair of terminals 245 of the fixing portion 2421 (see Figure 9A). As a result, the pair of contact pins 2422 of the first receptacle 240A are electrically connected to the pair of first input terminals 204 of the light source module 20.

[0047] The first plug 241A comprises a plug body 243 and a pair of pin receivers (not shown). The plug body 243 has a long, rectangular parallelepiped-shaped retaining portion 2430 and a long, rectangular prism-shaped fitting portion 2431. The retaining portion 2430 and the fitting portion 2431 are integrally formed from an electrically insulating synthetic resin.

[0048] The mating portion 2431 is formed in a prismatic shape and houses a pair of pin receivers inside. Two insertion holes 2432 are open on the bottom surface (lower surface) of the mating portion 2431 (see Figure 10). Each of these two insertion holes 2432 is connected to a space within the mating portion 2431 that houses the pair of pin receivers. In other words, when the pair of contact pins 2422 of the first receptacle 240A are inserted one by one into the two insertion holes 2432, the contact pins 2422 and the pin receivers are electrically and mechanically connected on a one-to-one basis.

[0049] The retaining portion 2430 is connected to the upper surface of the mating portion 2431, and a pair of wire insertion openings 2433 are opened on its upper surface (see Figure 11). These wire insertion openings 2433 are connected to the space within the mating portion 2431 in which a pair of pin receivers are housed. In other words, when the conductors of the wires L11 and L21, described later, are inserted into each wire insertion opening 2433, the pin receivers housed in the space within the mating portion 2431 and the conductors of the wires L11 and L21 are electrically and mechanically connected. The two wires L11 and L21 held by the retaining portion 2430 are electrically connected to the positive terminal of the output terminal of the power supply device 40, described later.

[0050] On the other hand, the second connecting member 24B includes a connector having a second receptacle 240B and a second plug 241B. However, the second receptacle 240B and the second receptacle 241B have the same structure as the first receptacle 240A and the first plug 241A of the first connecting member 24A. Therefore, a detailed description of the second connecting member 24B is omitted.

[0051] (2-3-2) Power supply unit The power supply unit 4 comprises a power supply device 40 composed of printed circuits and a power supply case 41 that houses the power supply device 40 (see Figures 3 and 12).

[0052] Figure 13 shows the circuit configuration of the power supply unit 40. The power supply unit 40 includes a power conversion circuit 400, a first constant current circuit 401, a second constant current circuit 402, a control circuit 403, and the like.

[0053] The power conversion circuit 400 includes, for example, a rectifier circuit such as a diode bridge, a boost chopper circuit (power factor correction circuit), and the like. The power conversion circuit 400 converts AC power supplied from an external power supply P1 into DC power. The external power supply P1 is, for example, a commercial power grid that supplies AC voltage and AC current with an effective value of 100V or 200V. However, the power conversion circuit 400 may include a switching power supply circuit with a power factor correction function, such as a buck chopper circuit, a buck-boost chopper circuit, or a flyback converter, instead of a boost chopper circuit.

[0054] The first constant current circuit 401 and the second constant current circuit 402 include, for example, a step-down chopper circuit (buck converter). The first constant current circuit 401 steps down the DC voltage output from the power conversion circuit 400 and applies it to the warm white LED 201 of the light source module 20, and adjusts the DC current flowing through the warm white LED 201 of the light source module 20. The second constant current circuit 402 steps down the DC voltage output from the power conversion circuit 400 and applies it to the daylight-colored LED 201 of the light source module 20, and adjusts the DC current flowing through the daylight-colored LED 201 of the light source module 20. However, the first constant current circuit 401 and the second constant current circuit 402 may be equipped with various chopper circuits, series regulators, etc., instead of step-down chopper circuits.

[0055] The positive output terminal of the first constant current circuit 401 is inserted via wire L11 into one of the wire insertion ports 2433 of the first plug 241A of the first connecting member 24A and electrically connected to one of the pin receptacles. The negative output terminal of the first constant current circuit 401 is inserted via wire L12 into one of the wire insertion ports 2433 of the second plug 241B of the second connecting member 24B and electrically connected to one of the pin receptacles. The positive output terminal of the second constant current circuit 402 is inserted via wire L21 into the other wire insertion port 2433 of the first plug 241A of the first connecting member 24A and electrically connected to the other pin receptacle. The negative output terminal of the second constant current circuit 402 is inserted via wire L22 into the other wire insertion port 2433 of the second plug 241B of the second connecting member 24B and electrically connected to the other pin receptacle.

[0056] The control circuit 403 includes, for example, a microcontroller. The control circuit 403 controls the step-down chopper circuit of the first constant current circuit 401 so that the DC current supplied from the first constant current circuit 401 to the warm white LED 201 of the light source module 20 matches a target value. The control circuit 403 also controls the step-down chopper circuit of the second constant current circuit 402 so that the DC current supplied from the second constant current circuit 402 to the daylight-colored LED 201 of the light source module 20 matches a target value. The control circuit 403 individually changes the target values ​​of the DC current supplied to the warm white and daylight-colored LEDs 201 of the light source module 20 according to the control signals received from the communication unit 3, which will be described later.

[0057] The power supply case 41 is formed from metal plates into a long, box-like shape with an open bottom (see Figure 14). The power supply case 41 houses the two power supply boards (first power supply board 45A and second power supply board 45B) that make up the power supply unit 40. The first power supply board 45A is housed at one end (left side) in the longitudinal direction of the power supply case 41, and the second power supply board 45B is housed at the other end (right side) in the longitudinal direction of the power supply case 41 (see Figure 14).

[0058] The first power supply board 45A is equipped with a power terminal section 450 and various circuit components that constitute the power conversion circuit 400. The power terminal section 450 is a quick-connect, plug-in type terminal block and is mounted on the left end of the first power supply board 45A. An opening 413 is provided on the left side of the power supply case 41 (see Figure 15), and a pair of electric wires 43 are plugged into the power supply case 41 through the opening 413 and connected to the power terminal section 450. A receptacle connector 44 is attached to the ends of these electric wires 43 (see Figure 12). The receptacle connector 44 is connected to a plug connector 150. In other words, the power supply unit 40 is electrically connected to an external power supply P1 via the plug connector 150, the receptacle connector 44, and the pair of electric wires 43.

[0059] The second power supply board 45B has circuit components that constitute the first constant current circuit 401, the second constant current circuit 402, and the control circuit 403, as well as an output terminal section 451 and a signal terminal section 452 mounted on it (see Figure 14). The output terminal section 451 is a connector and is mounted near the right end of the second power supply board 45B. The output terminal section 451 electrically connects one pair (positive and negative) of output terminals of the first constant current circuit 401 and the second constant current circuit 402 to the first input terminal 204 (see Figure 9A) and the second input terminal 205 (see Figure 9B) of the light source module 20 via four wires L11, L12, L21, and L22. Here, an insertion opening 414 is provided on the right side of the power supply case 41, and the four wires L11, L12, L21, and L22 connected to the output terminal section 451 are pulled out of the power supply case 41 through the insertion opening 414 (see Figure 16).

[0060] Furthermore, multiple wire holders 411 are provided on the bottom 410 of the power supply case 41 (see Figure 12). These wire holders 411 are formed in an L-shape by cutting and bending from the bottom 410. These wire holders 411 are spaced apart along the longitudinal direction (left-right direction) of the power supply case 41. These wire holders 411 hold the second output wire (wire L12) of the negative terminal of the first constant current circuit 401 and the output wire (wire L22) of the negative terminal of the second constant current circuit 402 (see Figure 12).

[0061] The signal terminal section 452 is electrically connected to the connector 34 of the communication unit 3, which will be described later, via a pair of power supply lines 341 and a pair of signal lines 342. The open bottom surface of the power supply case 41 is covered with an electrically insulating sheet 46 (see Figure 15).

[0062] The power supply unit 4 is attached to the light source unit 2 by screwing the lower surface of the power supply case 41 to the upper surface of the support member 21 of the light source unit 2, with the lower surface of the power supply case 41 facing the support member 21 (see Figure 12). However, the method of fixing the power supply case 41 to the support member 21 is not limited to screwing; for example, any appropriate fixing method such as crimping can be used. Also, when attached to the support member 21, the opening (lower surface) of the power supply case 41 is closed by the support member 21.

[0063] (2-3-3) Support Member The support member 21 has a long, plate-shaped base plate 210 and a pair of side plates 211 that rise upward from a pair of side ends (front and rear ends) along the longitudinal direction (left-right direction) of the base plate 210 (see Figures 2 and 3). The pair of side plates 211 are formed in a long, rectangular shape.

[0064] Furthermore, the support member 21 has a positioning piece 212, a locking piece 213, a pair of cover mounting pieces 214, a pair of projections 215, and a pair of hooking parts 216 (see Figure 3).

[0065] The positioning piece 212 is formed in a prismatic shape that protrudes downward from the rear end of the lower surface (first surface 210A) of the base plate 210. The locking piece 213 is formed in an L-shape that protrudes downward from the front end of the first surface 210A of the base plate 210. The positioning piece 212 and the locking piece 213 are each formed along the entire length of the base plate 210 in the longitudinal direction, parallel to each other. The substrate 200 of the light source module 20 is inserted into the gap between the locking piece 213 and the base plate 210, and the substrate 200 is locked to the locking piece 213 (see Figure 3). The positioning piece 212 then positions the substrate 200 in the front-rear direction of the base plate 210. The substrate 200 is screwed to the base plate 210 by a plurality of screws 217.

[0066] Each of the pair of cover mounting pieces 214 is formed in an L-shape and protrudes downward from each side end along the longitudinal direction of the base plate 210. A pair of mounting portions 222 of the cover 22 are hooked onto each cover mounting piece 214, as will be described later.

[0067] Each pair of hooks 216 protrudes inward from approximately the center in the vertical direction on the inner surface of each of the pair of side plates 211, along the entire length of the longitudinal direction of each side plate 211. However, the tip of each hook 216 is bent downward (see Figure 3). These pair of hooks 216 hook onto the respective tips of the two mounting springs 12 attached to the fixture body 1.

[0068] Each pair of projections 215 protrudes inward from the lower end portion of the inner surface of each of the pair of side plates 211, along the entire length of each side plate 211 in the longitudinal direction. The bottom plate 210, the pair of side plates 211, the positioning piece 212, the locking piece 213, the pair of cover mounting pieces 214, the pair of projections 215, and the pair of hooks 216 are integrally formed by extrusion molding of a metal material such as an aluminum alloy.

[0069] Here, the support member 21 has one cavity 218 at each of the longitudinal ends of the base plate 210. The cavity 218 is a hole that penetrates the base plate 210 (see Figure 17B). The cavity 218 is provided in the thickness direction of the base plate 210, opposite to the through hole 203 of the substrate 200. That is, when the support member 21 is supporting the light source module 20, the first receptacle 240A and the second receptacle 240B protrude above the base plate 210 through the cavity 218 (see Figure 17B). This allows the first plug 241A connected to the wires L11 and L21, and the second plug 241B connected to the wires L12 and L22, to be easily connected to the first receptacle 240A and the second receptacle 240B.

[0070] Here, with the light source unit 2 held in the fixture body 1, when viewed from above, the first connecting member 24A is in a position overlapping with the second terminal block 14B, and the second connecting member 24B is in a position overlapping with the first terminal block 14A (see Figures 18 and 19). Therefore, there is a possibility that the power cables C1 and C2 connected to the first terminal block 14A and the second terminal block 14B may come into contact with the wires L11, L21, L12, and L22 connected to the first connecting member 24A and the second connecting member 24B, or to the first plug 241A and the second plug 241B.

[0071] Therefore, in this embodiment, the light source unit 2 is protected by covering the tops of the first connecting member 24A and the second connecting member 24B with two protective covers 25 provided on the support member 21 (see Figures 17A, 18, and 19). However, in the following description, the protective cover 25 corresponding to the first connecting member 24A may be referred to as the first protective cover 25A, and the protective cover 25 corresponding to the second connecting member 24B may be referred to as the second protective cover 25B.

[0072] The protective cover 25 has a main piece 250, a pair of side pieces 251, a pair of hook pieces 252, and a fixing piece 253 (see Figure 17). The main piece 250 is formed in the shape of a rectangular flat plate. The pair of side pieces 251 are formed in the shape of a rectangular flat plate and protrude downward from both ends of the main piece 250 in the longitudinal direction (front-to-back direction). The length of the pair of side pieces 251 in the longitudinal direction is longer than the length of the main piece 250 in the short direction. Therefore, the pair of side pieces 251 protrude from one end of the main piece 250 in the short direction. The pair of hook pieces 252 are provided at an outward inclination from the tips of the pair of side pieces 251. The fixing piece 253 is formed in the shape of an L when viewed from the front-to-back direction (the longitudinal direction of the main piece 250). Circular holes 254 pass through both ends of the fixing piece 253 in the longitudinal direction (see Figure 17B).

[0073] The protective cover 25 is attached to the support member 21 by hooking one hook piece 252 onto a projection 215 on one side plate 211 and screwing a fixing screw 255, which is inserted through one hole 254 of the fixing piece 253, into a screw hole in the bottom plate 210 (see Figures 17A and 17B). When the first protective cover 25A is attached to the support member 21, the main piece 250 and a pair of side pieces 251 cover the first connecting member 24A (see Figures 17A and 19). When the second protective cover 25B is attached to the support member 21, the main piece 250 and a pair of side pieces 251 cover the second connecting member 24B (see Figure 12).

[0074] However, the lighting fixture A1 can be protected by protective covers 25 (first protective cover 25A, second protective cover 25B) to prevent unnecessary external forces from being applied to the first connecting member 24A and the second connecting member 24B, as well as the electric wires L11, L21, L12, and L22, which could cause malfunctions in the first connecting member 24A, the second connecting member 24B, and the electric wires.

[0075] (2-3-4) Cover The cover 22 has a front wall 220, a pair of side walls 221, and a pair of mounting parts 222 (see Figures 2 and 3). The front wall 220 is formed in a long rectangular shape. Each of the pair of side walls 221 is formed in a long rectangular shape and protrudes upward from both ends (front and rear ends) along the longitudinal direction of the front wall 220. Each of the pair of mounting parts 222 is formed in a long U-shape and protrudes inward from the upper end of each side wall 221 along the entire length of the side wall 221 in the longitudinal direction. Here, it is preferable that the front wall 220, the pair of side walls 221, and the pair of mounting parts 222 are integrally formed by extrusion molding of a translucent synthetic resin such as polycarbonate resin or acrylic resin. Furthermore, it is preferable that the cover 22 is formed in a milky white color by mixing a filler into the synthetic resin material in order to diffuse the light emitted from the light source module 20.

[0076] The cover 22 is attached to the support member 21 by hooking one of the pair of mounting parts 222 onto each of the pair of cover mounting pieces 214 of the support member 21 (see Figure 3). The cover 22 attached to the support member 21 covers the light source module 20 which is mounted on the first surface 210A of the bottom plate 210.

[0077] (2-3-5) End members The end member 23 includes a cover end portion 230 that closes the longitudinal end of the cover 22, an end cap portion 231 that closes the longitudinal end of the support member 21, and a mounting fixture 232 for attaching the end member 23 to the support member 21 (see Figure 2).

[0078] The end members 23 are attached to the support member 21 by screwing the mounting fixture 232 to the support member 21. With the two end members 23 each attached to the support member 21, the openings at both ends in the longitudinal direction of the cover 22 and the openings at both ends in the longitudinal direction of the support member 21 are closed (see Figure 1).

[0079] (2-3-6) Communication Unit The communication unit 3 includes a wireless circuit section 30, an antenna section 31, a circuit board 32 on which the wireless circuit section 30 and the antenna section 31 are formed, and a case 33 that houses the circuit board 32 (see Figures 3, 13, 20-22).

[0080] The circuit board 32 consists of a printed circuit board with wiring conductors printed on a rectangular insulating substrate (see Figure 21). In other words, the wireless circuit section 30 is composed of a printed circuit including a wireless communication module IC 300 with a built-in microcontroller (see Figures 13 and 21). Note that the shape of the circuit board 32 is not limited to a rectangle, but includes various shapes such as polygons other than rectangles, circles, etc.

[0081] The antenna section 31 is configured to emit electromagnetic waves (for example, radio waves in the 920 MHz band or 2.4 GHz band) into space and to receive electromagnetic waves from space. The antenna section 31 is a so-called pattern antenna, for example, formed from a conductor printed on the circuit board 32 (see Figure 21). The antenna section 31 is formed in an S-shape at one end (lower part) of the surface of the circuit board 32. However, the antenna section 31 is not limited to a pattern antenna, and may also be a patch antenna (microstrip antenna), chip antenna, rod antenna, film antenna, etc.

[0082] The wireless circuit unit 30 extracts a wireless signal from the radio waves received by the antenna unit 31 and obtains control information (control commands) from the wireless signal. Furthermore, the wireless circuit unit 30 converts the control information into a dimming signal and transmits the converted dimming signal to the control circuit 403 of the power supply unit 40. The wireless circuit unit 30 is capable of not only receiving wireless signals but also transmitting them. For example, the wireless circuit unit 30 performs wireless communication compliant with the BLE (Bluetooth® low energy) communication standard. The wireless circuit unit 30 can also receive wireless signals transmitted from a communication unit 3 mounted on another lighting fixture A1 and transmit (relay) the received wireless signal, including the control information contained in the wireless signal, to a communication unit 3 mounted on yet another lighting fixture A1.

[0083] A connector 34 is mounted on the circuit board 32 (see Figure 21). The connector 34 is connected to a pair of power supply lines 341 for supplying power from the power supply unit 40 to the wireless circuit unit 30 and a pair of signal lines 342 for transmitting dimming signals (see Figure 22).

[0084] The power supply unit 40 controls the light source module 20 by changing the target value of the DC current supplied from the control circuit 403 to the light source module 20 in response to a dimming signal received from the communication unit 3 via the signal line 342, thereby causing the light source module 20 to blink (switch on and off), dim, and change color.

[0085] Case 33 has a case body 33A and a case cover 33B (see Figures 20-22). In the following description, unless otherwise specified, the up / down, left / right, and front / back directions indicated by arrows in Figure 20A are defined as the up / down, left / right, and front / back directions of Case 33 (communication unit 3).

[0086] The case body 33A is made of a box-shaped synthetic resin molded body with one side (bottom) open (see Figures 21 and 22). A mounting portion 330 protrudes from the upper end of the left side of the case body 33A. The mounting portion 330 is formed in the shape of a rectangular box with an open top (see Figure 20). There is one round hole 331 at each end of the bottom surface (bottom) of the mounting portion 330 in the longitudinal direction (front-to-back direction).

[0087] Furthermore, the case body 33A has one recess 332 on its front and one on its rear surface, with the lower end open. A projection 333 is provided on the upper part of the bottom surface of each recess 332. The projection 333 is formed in the shape of a triangular prism, inclined upwards from the bottom surface of the recess 332.

[0088] Furthermore, support portions 334 are provided on the inner surfaces of both the left and right sides of the case body 33A to clamp and support both ends of the circuit board 32 (see Figure 21). The support portions 334 have grooves with the vertical direction as their longitudinal direction, and the ends of the circuit board 32 are inserted into the grooves to support the circuit board 32 in an upright position (see Figure 22).

[0089] The case body 33A is constructed as a synthetic resin molded body made of a synthetic resin material such as polycarbonate resin. However, the case body 33A may be formed from a material other than synthetic resin, including metal, or from a hybrid material of metal and synthetic resin.

[0090] The case cover 33B has a flat cover body 335 and a pair of assembly legs 336 (see Figure 21). However, the cover body 335 and the pair of assembly legs 336 are integrally formed as a molded body of synthetic resin. The pair of assembly legs 336 are formed in an inverted U shape and protrude upward from the front and rear ends of the cover body 335, respectively (see Figure 21).

[0091] The case cover 33B is attached to the underside of the case body 33A, which houses the circuit board 32. Specifically, the two assembly legs 336 of the case cover 33B are inserted from below into a pair of recesses 332 on the case body 33A, and the upper end of each assembly leg 336 bends outward while riding on the inclined surface of each projection 333. Once the upper part of each assembly leg 336 has passed over each projection 333, the assembly leg 336 catches on each projection 333, thereby fixing the case cover 33B to the case body 33A (see Figure 20).

[0092] Here, a wire insertion hole 337 is provided on the left side of the case 33 (see Figures 20B and 22). The wire insertion hole 337 is through which the power supply line 341 and the signal line 342, which are electrically connected to the connector 34 of the circuit board 32, are inserted. The power supply line 341 and the signal line 342 are electrically connected to the signal terminal section 452 mounted on the right end of the second power supply board 45B of the power supply unit 40 (see Figure 16).

[0093] Furthermore, a recess 338 is formed on the left side of case 33 (see Figures 20B and 22). The recess 338 is formed by making the width of the front half of case 33 shorter than the width of the rear half of case 33. As will be described later, when case 33 is attached to the power supply case 41, a gap G3 is formed between case 33 and the power supply case 41 by the recess 338 (see Figure 16). The four electric wires L11, L21, L12, and L22, which are pulled out from the insertion opening 414 of the power supply case 41, are then placed in this gap G3.

[0094] (2-3-7) Installation process of the power supply unit and communication unit to the support member Next, the process of attaching the power supply unit 4 and the communication unit 3 to the support member 21 will be explained.

[0095] First, the case 33 of the communication unit 3 is attached to the right end of the power supply case 41 of the power supply unit 4. Specifically, the mounting portion 330 of the case 33 is placed on the upper surface of the right end of the power supply case 41, and screws, one in each of the two round holes 331 of the mounting portion 330, are screwed into the screw holes of the power supply case 41. In other words, the case 33 is attached to the power supply case 41 by screwing the mounting portion 330 to the power supply case 41. However, it is preferable that the communication unit 3 and the power supply unit 4 are electrically connected by a connector 34 mounted on the circuit board 32 before the communication unit 3 is attached to the power supply unit 4.

[0096] Next, the power supply unit 4 is attached to the support member 21 by screwing the power supply case 41 to the bottom plate 210 at the center of the upper surface of the bottom plate 210 of the support member 21. At this time, the open side (bottom surface) of the power supply case 41 is closed off by the bottom plate 210.

[0097] Then, the first plugs 241A at the ends of the two wires L11 and L21, which are pulled out from the gap G3 between the power supply case 41 and the case 33 of the communication unit 3, are plugged into the first receptacle 240A that protrudes from the space 218 on the right side of the bottom plate 210 (see Figure 17B).

[0098] Meanwhile, the remaining two wires L12 and L22, which are pulled out from the gap G3 between the power supply case 41 and the case 33 of the communication unit 3, are held in multiple wire holders 411 of the power supply case 41 (see Figure 12). The second plugs 241B at the ends of these wires L12 and L22 are then plugged into the second receptacle 240B that protrudes from the space 218 on the left side of the bottom plate 210.

[0099] Finally, the two protective covers 25 are attached to the support member 21 (see Figures 17A and 17B).

[0100] The power supply unit 4 and the communication unit 3 are attached to the support member 21 using the above procedure. However, the communication unit 3 may be attached to the power supply unit 4 after the power supply unit 4 has been attached to the support member 21.

[0101] (2-3-8) Installation procedure for lighting fixtures Next, we will explain the procedure for installing lighting fixture A1 on the ceiling (installation surface S1).

[0102] The worker performing the installation inserts the first power cable C1 and the second power cable C2, which are pulled out from the ceiling (installation surface S1) into the room, one by one into the two power holes 111 of the fixture body 1. Then, the worker inserts the two suspension bolts B1 protruding from the ceiling (installation surface S1) into the two mounting holes 112 of the fixture body 1, one by one, and tightens nuts N1 onto each suspension bolt B1 to attach the fixture body 1 to the ceiling (installation surface S1). After that, the worker connects the first power cable C1 to the primary terminal of the first terminal block 14A, and connects the second power cable C2 to the primary terminal of the second terminal block 14B.

[0103] Next, the worker temporarily suspends the light source unit 2 from the fixture body 1 by hooking the ends of the two strings provided on the light source unit 2 into the two hook holes 113 on the fixture body 1, one string at a time. In this state, the worker connects the receptacle connector 44 of the power supply unit 4 to the plug connector 150 of the fixture body 1.

[0104] Then, the worker supports the temporarily suspended light source unit 2 with both hands and brings it close to the fixture body 1, inserting the mounting spring 12 of the fixture body 1 between the pair of side plates 211 of the support member 21. The tip of the mounting spring 12 inserted between the pair of side plates 211 then hooks onto the hook portion 216 on the inner surface of each side plate 211 (see Figure 3). As a result, the light source unit 2 is attached to the fixture body 1 by the two mounting springs 12. If the worker pulls the light source unit 2 downwards, the tip of the mounting spring 12 will detach from the hook portion 216, and the light source unit 2 can be removed from the fixture body 1.

[0105] The installation of lighting fixture A1 is completed following the steps above.

[0106] (2-4) Characteristics of the Embodiment Lighting fixture A1 has the following characteristics:

[0107] In the conventional example described in Patent Document 1, the electrical circuit connecting the light-emitting module and the lighting circuit is configured using power supply side wires and connectors provided on the output side of the power supply device and light source side wires and connectors provided on one longitudinal end of the substrate constituting the light-emitting module. Therefore, in the conventional example, if the number or type of light-emitting elements mounted on the substrate of the light-emitting module increases, the number of light source side wires provided on the substrate may also increase.

[0108] However, in conventional examples, increasing the number of light source wires provided on one end of the substrate in the longitudinal direction requires extensive measures such as widening the gap between one end of the substrate and the end cap.

[0109] In contrast, lighting fixture A1 has a first connecting member 24A and a second connecting member 24B that electrically connect the power supply unit 40 and the first input terminal 204 and second input terminal 205 of the light source module 20, and these are arranged in the longitudinal direction of the light source unit 2 so as to sandwich the power supply unit 40 (see Figure 2).

[0110] As a result, lighting fixture A1 can easily accommodate an increase in the amount of wiring that electrically connects the light source unit 2 and the power supply unit 40, compared to the conventional example where the light source unit and the power supply unit are electrically connected with a single connecting member.

[0111] Here, the first connecting member 24A includes a first connector having a first receptacle 240A and a first plug 241A, and the second connecting member 24B includes a second connector having a second receptacle 240B and a second plug 241B. The lighting fixture A1 has the first receptacle 240A and the second receptacle 240B protruding from the second surface 210B (upper surface) of the bottom plate 210 of the support member 21 through a cavity 218 provided in the bottom plate 210 of the support member 21 into the space K1 (see Figure 18).

[0112] However, compared to the case where the first connecting member 24A and the second connecting member 24B are arranged around the support member 21, the lighting fixture A1 can effectively utilize the dead space in space K1, thereby suppressing the need to enlarge the light source unit 2.

[0113] Furthermore, lighting fixture A1 has a power terminal section 450 at one end (left end) in the longitudinal direction of the first power supply board 45A, which is electrically connected to an external power supply P1. In addition, lighting fixture A1 has an output terminal section 451 at the other end (right end) in the longitudinal direction of the second power supply board 45B, which is electrically connected to the first input terminal 204 and the second input terminal 205 of the light source module 20 (see Figure 14). As a result, lighting fixture A1 can shorten the wires 15A to 15F for connecting the power terminal section 450 and the external power supply P1, and shorten the wires L11 and L21 for connecting one of the connecting members (first connecting member 24A) and the output terminal section 451.

[0114] Here, lighting fixture A1 has the wires L12 and L22, which connect the other connecting member (second connecting member 24B) to the output terminal section 451, arranged along the outer surface (top surface) of the power supply case 41 (see Figure 12). As a result, lighting fixture A1 can suppress the enlargement of the light source unit 2 by arranging the wires L12 and L22 in the dead space in space K1 (the space between the bottom 410 of the power supply case 41 and the main part 10 of the fixture body 1).

[0115] Furthermore, lighting fixture A1 is provided with multiple wire holders 411 at the bottom 410 of the power supply case 41 facing space K1, and these wire holders 411 hold the wires L21 and L22 (see Figure 12). As a result, lighting fixture A1 can prevent the wires L21 and L22 from getting caught between, for example, the side 11 of the fixture body 1 and the side plate 211 of the support member 21 by restricting the movement of the wires L21 and L22.

[0116] Furthermore, lighting fixture A1 includes a first protective cover 25A that covers the first connector (first receptacle 240A and first plug 241A) of the first connecting member 24A, and a second protective cover 25B that covers the second connector (second receptacle 240B and second plug 241B) of the second connecting member 24B. Since lighting fixture A1 covers the first connector of the first connecting member 24A and the second connector of the second connecting member 24B, which are both live parts, with protective covers, it is possible to prevent direct contact of the live parts with hands.

[0117] Furthermore, the lighting fixture A1 has the first protective cover 25A positioned so as to overlap with the second terminal block 14B when viewed from the direction opposite to the second surface 210B of the base plate 210 (downward), and the second protective cover 25B positioned so as to overlap with the first terminal block 14A. As a result, the lighting fixture A1 can be miniaturized by positioning the first connecting member 24A and the second connecting member 24B so as to overlap with the terminal blocks (the second terminal block 14B and the first terminal block 14A).

[0118] Furthermore, in space K1, lighting fixture A1 positions the wires 15A, 15B, 15D, and 15E connecting the power terminal section 450 to the first terminal block 14A and the second terminal block 14B in a position close to the fixture body 1. Also, in space K1, lighting fixture A1 positions the wires L11 and L21 connecting the power supply unit 40 to the light source module 20 in a position close to the support member 21 (see Figures 6, 7, and 12). In other words, by separating the wires 15A, 15B, 15D, and 15E from the wires L11 and L21, lighting fixture A1 can reduce the influence of electromagnetic noise emitted from wires 15A, 15B, 15D, and 15E on the current flowing through wires L11 and L21.

[0119] Furthermore, lighting fixture A1 places four wires L11, L21, L12, and L22, which are pulled out from the insertion opening 414 of the power supply case 41, into the gap G3 between the power supply case 41 and the case 33 of the communication unit 3 (see Figure 16). This allows lighting fixture A1 to place the four wires L11, L21, L12, and L22 within space K1 without being obstructed by the case 33 of the communication unit 3.

[0120] Furthermore, the lighting fixture A1 draws a pair of wires 43 into the power supply case 41 through an opening 413 on the left side of the power supply case 41, and connects the drawn-in pair of wires 43 to the power supply terminal section 450 (see Figure 15). As a result, the lighting fixture A1 can shorten the wiring (pair of wires 43) for connecting the power supply terminal section 450 to the external power supply P1.

[0121] (3) Modified example of a lighting fixture according to the embodiment Next, a modified example of the lighting fixture A1 according to the embodiment will be described. However, the basic configuration of the modified lighting fixture A1 described below is the same as the basic configuration of the lighting fixture A1 according to the embodiment. Therefore, components that are common to or substantially common with the basic configuration of the lighting fixture A1 according to the embodiment will be denoted by the same reference numerals, and their illustration and description will be omitted as appropriate. In the following description, "substantially common components" means components that differ slightly in shape, size, etc., but have the same function.

[0122] The modified lighting fixture A1 is characterized by having its overall length (length in the longitudinal direction) reduced to approximately three-quarters of that of the lighting fixture A1 of the embodiment (see Figure 23).

[0123] Specifically, the overall lengths of the fixture body 1, support member 21, and cover 22 have each been shortened to approximately three-quarters of their original length. In addition, the length of one of the two circuit boards 200 of the light source module 20 (the one on the right in Figure 15) has been reduced to half the length of the other circuit board 200 (the one on the left in Figure 23). As a result of shortening the overall length of the fixture body 1, the modified lighting fixture A1 has only one terminal block 14.

[0124] The modified lighting fixture A1 has a shorter overall length, which allows for greater flexibility in its installation location.

[0125] Furthermore, the modified lighting fixture A1 differs from the embodiment in the structure of the protective cover 25. As shown in Figures 24A and 24B, the protective cover 25 in the modified example has a main piece 250, a pair of side pieces 251, a hook piece 252, a pair of fixing pieces 253, and an auxiliary piece 256 (see Figure 24). The main piece 250 is formed in the shape of a rectangular flat plate. The pair of side pieces 251 are formed in the shape of a rectangular flat plate and protrude downward from both ends of the main piece 250 in the short direction (front-to-back direction). The pair of fixing pieces 253 are formed in the shape of an L when viewed from the front-to-back direction (the short direction of the main piece 250). A circular hole 254 passes through each fixing piece 253. The auxiliary piece 256 is formed in the shape of a rectangular flat plate and protrudes parallel to the main piece 250 from the lower end of one of the side pieces 251. The hook piece 252 is formed in a V-shape when viewed from the longitudinal direction of the auxiliary piece 256 and protrudes downward from the tip of the auxiliary piece 256 (see Figure 24B).

[0126] The protective cover 25 is attached to the support member 21 by hooking the hook piece 252 onto the projection 215 of one side plate 211 and screwing the fixing screw 255, which is inserted through the hole 254 of the fixing piece 253, into the screw hole of the bottom plate 210 (see Figure 24A). When attached to the support member 21, the protective cover 25 covers and protects the connecting member (first connecting member 24A in Figure 24) with the main piece 250, the pair of side pieces 251, and the pair of fixing pieces 253.

[0127] In this modified example, the lighting fixture A1 has only about three-quarters the overall length of the lighting fixture A1 of the embodiment, so the effective space in the support member 21 is also reduced to about three-quarters. Therefore, in the modified example, the protective cover 25 is provided with two hooking holes 257 on the auxiliary piece 256, and one cable holder 26 is attached to the auxiliary piece 256. In other words, the modified lighting fixture A1 can accommodate the reduction in space in the support member 21 by providing the hooking holes 257 and the cable holder 26 on the protective cover 25.

[0128] (4) Summary A lighting fixture (A1) according to a first aspect of this disclosure comprises a long light source unit (2), a long fixture body (1) installed on an installation surface (S1) and holding the light source unit (2), and a power supply device (40) disposed in a space (K1) enclosed by the fixture body (1) and the light source unit (2). The light source unit (2) includes a light source module (20), a long support member (21) that supports the light source module (20), a first connecting member (24A) electrically connected to a first input terminal (204) of the light source module (20), and a second connecting member (24B) electrically connected to a second input terminal (205) of the light source module (20). The power supply device (40) is electrically connected to the first input terminal (204) and the second input terminal (205) via the first connecting member (24A) and the second connecting member (24B). The first connecting member (24A) and the second connecting member (24B) are arranged in the longitudinal direction of the light source unit (2) so as to sandwich the power supply unit (40).

[0129] The lighting fixture (A1) according to the first embodiment can easily accommodate an increase in the amount of wiring electrically connecting the light source unit (2) and the power supply unit (40) by arranging the first connecting member (24A) and the second connecting member (24B) in the longitudinal direction of the light source unit (2) so as to sandwich the power supply unit (40).

[0130] A lighting fixture (A1) according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting fixture (A1) according to the second aspect, the support member (21) preferably has a first surface (210A) that supports a light source module (20) and a second surface (210B) that is the back surface of the first surface (210A) and faces space (K1). The first connecting member (24A) preferably includes a first connector having a first receptacle (240A) and a first plug (241A). The second connecting member (24B) preferably includes a second connector having a second receptacle (240B) and a second plug (241B). The first receptacle (240A) and the second receptacle (240B) preferably protrude from the second surface (210B) into the space (K1) through a cavity (218) provided in the support member (21).

[0131] In the second embodiment of the lighting fixture (A1), compared to the case where the first connecting member (24A) and the second connecting member (24B) are arranged around the support member (21), the size of the light source unit (2) can be suppressed by effectively utilizing the dead space in the space (K1).

[0132] A lighting fixture (A1) according to a third aspect of this disclosure can be realized by combining it with the first or second aspect. In the lighting fixture (A1) according to the third aspect, the power supply unit (40) preferably has a power terminal section (450), an output terminal section (451), and a long power supply board (first power supply board 45A, second power supply board 45B). The power terminal section (450) is preferably electrically connected to an external power supply (P1). The output terminal section (451) is preferably electrically connected to a first input terminal (204) and a second input terminal (205). The power supply board preferably has a power terminal section (450) at one end in the longitudinal direction and an output terminal section (451) at the other end in the longitudinal direction.

[0133] The lighting fixture (A1) according to the third embodiment can shorten the wiring (wires 15A to 15F) for connecting the power terminal section (450) and the external power supply (P1), and shorten the wiring (wires L11, L21) for connecting one of the connecting members (first connecting member 24A) and the output terminal section (451).

[0134] A lighting fixture (A1) according to a fourth aspect of this disclosure can be realized by combining it with a third aspect. In the lighting fixture (A1) according to the fourth aspect, the first connecting member (24A) preferably includes a first connector having a first receptacle (240A) and a first plug (241A). The second connecting member (24B) preferably includes a second connector having a second receptacle (240B) and a second plug (241B). The power supply unit (40) preferably further includes first output lines (wires L11, L12) that electrically connect an output terminal (451) and a first plug (241A), second output lines (wires L12, L22) that electrically connect an output terminal (451) and a second plug (241B), and a power supply case (41) that houses power supply boards (first power supply board 45A, second power supply board 45B). The second output wires (wires L12 and L22) are preferably arranged along the outer surface of the power supply case (41).

[0135] The lighting fixture (A1) according to the fourth embodiment can suppress the enlargement of the light source unit (2) by arranging the second output line in the dead space in the space (K1).

[0136] A lighting fixture (A1) according to a fifth aspect of this disclosure can be realized by combining it with a fourth aspect. In the lighting fixture (A1) according to the fifth aspect, it is preferable that the power supply case (41) has a wire holding portion (411) on its outer surface facing the space (K1) for holding the second output wires (wires L12, L22).

[0137] The lighting fixture (A1) according to the fifth embodiment can prevent the second output wire from being pinched between the fixture body (1) and the support member (21) by restricting the movement of the second output wire.

[0138] A lighting fixture (A1) according to a sixth aspect of the present disclosure can be realized in combination with any of the first to fifth aspects. In the lighting fixture (A1) according to the sixth aspect, the first connecting member (24A) preferably includes a first connector having a first receptacle (240A) and a first plug (241A). The second connecting member (24B) preferably includes a second connector having a second receptacle (240B) and a second plug (241B). The support member (21) preferably further includes a first protective cover (25A) covering the first connector and a second protective cover (25B) covering the second connector.

[0139] The lighting fixture (A1) according to the sixth embodiment can suppress malfunctions caused by unnecessary external forces being applied to the first connecting member (24A), the second connecting member (24B), the first output line, and the second output line.

[0140] A lighting fixture (A1) according to the seventh aspect of this disclosure can be realized in combination with any of the first to sixth aspects. In the lighting fixture (A1) according to the seventh aspect, the power supply unit (40) preferably further comprises a power terminal section (450) electrically connected to an external power supply (P1). The lighting fixture (A1) according to the seventh aspect preferably further comprises two terminal blocks (a first terminal block 14A, a second terminal block 14B) electrically connected in parallel to the power terminal section (450) of the power supply unit (40). The two terminal blocks are preferably arranged so as to sandwich the power supply unit (40) along the longitudinal direction of the fixture body (1). The first connecting member (24A) preferably includes a first connector having a first receptacle (240A) and a first plug (241A). The second connecting member (24B) preferably includes a second connector having a second receptacle (240B) and a second plug (241B). Preferably, the support member (21) further includes a first surface (210A) that supports the light source module (20), a second surface (210B) that is the back surface of the first surface (210A) and faces the space (K1), a first protective cover (25A) that covers the first connector, and a second protective cover (25B) that covers the second connector. Preferably, the first protective cover (25A) is positioned so as to overlap one of the two terminal blocks (second terminal block 14B) when viewed from the direction facing the second surface (210B). Preferably, the second protective cover (25B) is positioned so as to overlap the other of the two terminal blocks (first terminal block 14A) when viewed from the direction facing the second surface (210B).

[0141] The lighting fixture (A1) according to the seventh embodiment allows for miniaturization of the light source unit (2).

[0142] A lighting fixture (A1) according to the eighth aspect of this disclosure can be realized by combining it with the seventh aspect. In the lighting fixture (A1) according to the eighth aspect, the power supply unit (40) preferably further includes an output terminal section (451) electrically connected to a first input terminal (204) and a second input terminal (205), a first output line electrically connecting the output terminal section (451) to a first plug (241A), and a second output line (wires L12, L22) electrically connecting the output terminal section (451) to a second plug (241B). In space (K1), it is preferable that the wires (15A, 15B, 15D, 15E) connecting the power supply terminal section (450) to the two terminal blocks are positioned close to the fixture body (1). In space (K1), it is preferable that the first output line or the second output line is positioned close to the support member (21).

[0143] The lighting fixture (A1) according to the eighth embodiment can reduce the influence of electromagnetic noise emitted from the electric wires (15A, 15B, 15D, 15E) on the current flowing through the first or second output line by separating the electric wires (15A, 15B, 15D, 15E) from the first or second output line.

[0144] A lighting fixture (A1) according to the ninth aspect of this disclosure can be realized in combination with any of the first to eighth aspects. The lighting fixture (A1) according to the ninth aspect preferably further comprises a control unit (communication unit 3) which is arranged in space (K1) and controls a power supply unit (40). The first connecting member (24A) preferably includes a first connector having a first receptacle (240A) and a first plug (241A). The second connecting member (24B) preferably includes a second connector having a second receptacle (240B) and a second plug (241B). The power supply unit (40) preferably includes a power terminal section (450), an output terminal section (451), a first output line, a second output line, a power supply board (first power supply board 45A, second power supply board 45B), and a power supply case (41). The power terminal section (450) is preferably electrically connected to an external power supply (P1). The output terminal section (451) is preferably electrically connected to the first input terminal (204) and the second input terminal (205). The first output line is preferably electrically connected to the output terminal section (451) and the first plug. The second output line (wires L12, L22) is preferably electrically connected to the output terminal section (451) and the second plug (241B). The power supply board is preferably provided with a power supply terminal section (450) at one end in the longitudinal direction and an output terminal section (451) at the other end in the longitudinal direction. The power supply case (41) is preferably used to house the power supply board. The first output line and the second output line are preferably arranged in the gap (G3) between the control unit and the power supply case (41).

[0145] The lighting fixture (A1) according to the ninth embodiment allows the first output line and the second output line to be arranged in space (K1) without being obstructed by the control unit.

[0146] A lighting fixture (A1) according to the tenth aspect of this disclosure can be realized in combination with any of the third to fifth aspects. In the lighting fixture (A1) according to the tenth aspect, the power supply device (40) preferably further comprises a power supply case (41) housing power supply boards (first power supply board 45A, second power supply board 45B). The power supply case (41) preferably has an opening (413) into which an electric wire (43) electrically connected to a power supply terminal portion (450) is inserted.

[0147] The lighting fixture (A1) according to the tenth embodiment can shorten the wiring (a pair of electric wires 43) for connecting the power terminal section (450) to an external power supply (P1). [Explanation of symbols]

[0148] A1 Lighting fixtures 1. Main body of the device 2 Light source units 3. Communication Unit (Control Unit) 14A Terminal block 1 14B Second terminal block 15A, 15B, 15D, 15E wire 20 Light Source Modules 21 Support member 24A First connecting member 24B Second connecting member 25A First protective cover 25B Second protective cover 40 Power supply 41 Power Supply Cases 43 Electric wire 45A 1st power supply board (power supply board) 45B 2nd power supply board (power supply board) 204 First Input Terminal 205 Second Input Terminal 210A 1st page 210B 2nd side 218 Blank 240A First Receptacle 240B Second Receptacle 241A Plug 1 241B Second plug 411 Wire holding part 413 Opening 450 Power terminal section 451 Output terminal section S1 installation surface K1 space P1 External power supply L11 Electric wire (1st output wire) L12 Electric wire (second output wire) L21 Electric wire (1st output wire) L22 Electric wire (second output wire) G3 Gap

Claims

1. A long light source unit, A long fixture body installed on the mounting surface and holding the light source unit, A power supply unit is placed in the space enclosed by the main body of the fixture and the light source unit, Equipped with, The aforementioned light source unit is Light source module, A support member formed in the shape of a long plate to support the light source module, A first connecting member electrically connected to the first input terminal of the light source module, A second connecting member electrically connected to the second input terminal of the light source module, It has, The power supply unit is electrically connected to the first input terminal and the second input terminal via the first connecting member and the second connecting member. The first connecting member and the second connecting member are arranged in the longitudinal direction of the light source unit so as to sandwich the power supply device. The first connecting member is connected to the first input terminal along the thickness direction of the support member, The second connecting member is connected to the second input terminal along the thickness direction of the support member. Lighting fixtures.

2. The aforementioned support member is The first surface supporting the light source module, The second surface is the reverse side of the first surface and faces the space, It has, The first connecting member includes a first connector having a first receptacle and a first plug. The second connecting member includes a second connector having a second receptacle and a second plug. The first receptacle and the second receptacle protrude from the second surface into the space through a cavity provided in the support member. The lighting fixture according to claim 1.

3. The aforementioned power supply device is A power terminal section that is electrically connected to an external power supply, An output terminal section electrically connected to the first input terminal and the second input terminal, A long power supply board having the power terminal section at one end in the longitudinal direction and the output terminal section at the other end in the longitudinal direction, Having, The lighting fixture according to claim 2.

4. The aforementioned power supply device is The output terminal section and the first plug are electrically connected by a first output line, The output terminal section and the second plug are electrically connected by a second output line, A power supply case housing the aforementioned power supply board, It further possesses, The second output line is arranged along the outer surface of the power supply case. The lighting fixture according to claim 3.

5. The power supply case has a wire holding portion on its outer surface facing the space for holding the second output wire. The lighting fixture according to claim 4.

6. The aforementioned support member is A first protective cover covering the first connector, A second protective cover covering the second connector, It further has, The lighting fixture according to claim 4.

7. The power supply unit further comprises two terminal blocks electrically connected in parallel to the power terminal section, The two terminal blocks are arranged along the longitudinal direction of the device body so as to sandwich the power supply device. The aforementioned support member is A first protective cover covering the first connector, A second protective cover covering the second connector, It further possesses, The first protective cover is positioned so as to overlap with one of the two terminal blocks when viewed from the direction opposite to the second surface. The second protective cover is positioned so as to overlap with the other terminal block of the two terminal blocks when viewed from a direction opposite to the second surface. The lighting fixture according to claim 4.

8. In the aforementioned space, the wires connecting the power terminal section and the two terminal blocks are positioned close to the main body of the device, and the first output wire or the second output wire is positioned close to the support member. The lighting fixture according to claim 7.

9. The space further comprises a control unit that controls the power supply device, The first output line and the second output line are arranged in the gap between the control unit and the power supply case. The lighting fixture according to claim 4.

10. The aforementioned power supply device further comprises a power supply case that houses the power supply board, The power supply case has an opening into which an electric wire, which is electrically connected to the power supply terminal, is inserted. The lighting fixture according to claim 3.

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