Luminaire

Abstract

To realize slimming down.SOLUTION: A luminaire A1 comprises a power supply terminal block 15 for connecting a power supply cable 80 connected to an external power supply and a power supply unit 5, and a signal terminal block 52 for connecting a signal cable connected to an external signal transmission source and the power supply unit 5. One terminal block out of the power supply terminal block 15 and the signal terminal block 52 is provided in an appliance body 1. The appliance body 1 comprises a bottom plate 10 formed in a long plate shape, first electric wire holes 12 provided in the bottom plate 10 in order to draw in the power cable 80, and a second electric wire hole 13 provided in the bottom plate 10 in order to draw in the signal cable. The first electric wire holes 12 are provided at both ends in the longitudinal direction of the bottom plate 10 one by one. The power supply terminal block 15, the signal terminal block, the power supply unit 5, and the second electric wire hole 13 are arranged between the two first electric wire holes 12.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture including a fixture body and a light source unit. [Background technology]

[0002] As a conventional example, the lighting device (lighting fixture) described in Patent Document 1 is exemplified. The lighting device described in Patent Document 1 includes a long lighting fixture and a light source unit attached to the lighting fixture. The lighting fixture has a fixture body with a recess having a bottom, and a power terminal block and a signal terminal block attached to the bottom. The light source unit includes a light source and a power supply device that turns on the light source, and is detachably attached to the fixture body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-154083 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting device (lighting fixture) described in Patent Document 1, the power terminal block and the signal terminal block are both attached to the bottom of the fixture body, so it was necessary to secure space in the recess of the fixture body for wiring the power line and the signal line. Therefore, with the conventional configuration described in Patent Document 1, it was difficult to slim down the lighting fixture.

[0005] An object of the present disclosure is to provide a lighting fixture that can be made slimmer. [Means for solving the problem]

[0006] A lighting fixture according to an embodiment of the present disclosure includes a long fixture body, a long light source unit detachably attached to the fixture body, a power supply unit that supplies power to the light source unit, a power terminal block for connecting an electric wire connected to an external power source to the power supply unit, and a signal terminal block for connecting a signal wire connected to an external signal transmission source to the power supply unit. One of the power supply terminal block and the signal terminal block is provided on the fixture body. The other terminal block of the power supply terminal block and the signal terminal block, excluding the one terminal block, is provided on the light source unit. The fixture body has a bottom plate formed in a long plate shape, a first electric wire hole provided on the bottom plate for drawing in the electric wire, and a second electric wire hole provided on the bottom plate for drawing in the signal wire. The first electric wire hole is provided at each end of the bottom plate in the longitudinal direction. The power supply terminal block, the signal terminal block, the power supply unit, and the second electric wire hole are arranged between two of the first electric wire holes. Effect of the Invention

[0007] The lighting fixture of the present disclosure has the advantage of being slimmer. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a front view of the above lighting fixture. [Diagram 3] FIG. 3 is a side view of the above lighting fixture. [Figure 4] FIG. 4 is a partially cutaway exploded perspective view of the above lighting fixture. [Diagram 5] FIG. 5 is an exploded perspective view of the above lighting fixture. [Figure 6] FIG. 6 is a plan view of the above lighting fixture. [Figure 7] FIG. 7 is a front view of the fixture body in the above lighting fixture. [Figure 8] FIG. 8 is an exploded perspective view of the lighting fixture of the above with a portion of the fixture body omitted. [Figure 9] FIG. 9 is a front view of the lighting fixture of the above with a part of the fixture body omitted. [Figure 10] FIG. 10 is a plan view of a light source unit in the above lighting fixture. [Figure 11] FIG. 11 is a cross-sectional view of the above lighting fixture. [Figure 12] FIG. 12 is a perspective view of an end member in the lighting fixture. [Figure 13] FIG. 13 is an exploded perspective view of an end member in the lighting fixture. [Figure 14] FIG. 14 is an exploded perspective view of an end member in the lighting fixture. [Figure 15] FIG. 15 is a side view of the lighting fixture of the above with the end member omitted. [Figure 16] FIG. 16 is a cross-sectional view of the above lighting fixture with a portion thereof omitted. [Figure 17] FIG. 17 is a front view of the above lighting fixture with a portion thereof omitted. [Figure 18] FIG. 18 is an exploded perspective view of a modification of the lighting fixture of the above embodiment, with a portion of the fixture body omitted. [Figure 19] FIG. 19 is a front view of a modification of the lighting fixture of the above with a portion of the fixture body omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiments of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configuration described in the following embodiments is merely one example of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0010] (1) Overview of the embodiments of the present disclosure The lighting fixture A1 according to an embodiment of the present disclosure includes a long fixture body 1, a long light source unit 2 detachably attached to the fixture body 1, and a power supply unit 5 that supplies power to the light source unit 2. The lighting fixture A1 according to an embodiment of the present disclosure includes a power terminal block 15 for connecting the power supply unit 5 to a power cable 80 connected to an external power source, and a signal terminal block 52 for connecting the power supply unit 5 to a signal line connected to an external signal transmission source. One of the power supply terminal block 15 and the signal terminal block 52 is provided in the fixture body 1, and the other terminal block excluding the one of the power supply terminal block 15 and the signal terminal block 52 is provided in the light source unit 2.

[0011] Thus, in the lighting fixture A1 according to the embodiment of the present disclosure, space for wiring the power lines and the signal lines can be more easily secured than in the case where the power terminal block 15 and the signal terminal block 52 are provided together in either the fixture body 1 or the light source unit 2. As a result, the lighting fixture A1 according to the embodiment of the present disclosure can reduce the extra space for the power lines and the signal lines and can be slimmed down.

[0012] (2) Detailed Description of the Embodiments (2-1) Lighting equipment As shown in Figs. 1 to 6, a lighting fixture A1 according to an embodiment of the present disclosure (hereinafter, abbreviated as lighting fixture A1) includes a long fixture body 1, a long light source unit 2, and a mounting member 3 for detachably mounting the light source unit 2 to the fixture body 1. The lighting fixture A1 is directly attached to, for example, a ceiling of a work room in an office building. In the following description, unless otherwise specified, the up-down, front-back, and left-right directions indicated by arrows in Fig. 1 are defined as the up-down, front-back, and left-right directions of the lighting fixture A1 and the light source unit 2, respectively.

[0013] (2-2) Equipment body The appliance body 1 has a bottom plate 10 formed in a long rectangular shape, and a pair of side plates 11 rising upward from both ends (front end and rear end) along the longitudinal direction (left-right direction) of the bottom plate 10 (see FIG. 4). The bottom plate 10 and the pair of side plates 11 are integrally formed by bending a single metal plate. In other words, the pair of side plates 11 have the function of improving the strength of the bottom plate 10.

[0014] The bottom plate 10 has two first electric wire holes 12, two second electric wire holes 13, two bolt insertion holes 14, and two hook holes 18 (see Figs. 4 and 6).

[0015] The two first electric wire holes 12 are circular holes provided at both ends (left end and right end) in the longitudinal direction of the bottom plate 10. A power cable 80 connected to an external power source (e.g., a commercial power system) is inserted into one of the two first electric wire holes 12 (see FIG. 7 ). A bushing 120 made of an annular synthetic resin molded body is fitted into each first electric wire hole 12, and the bushing 120 protects the power cable 80 from the edge of the first electric wire hole 12 of the bottom plate 10.

[0016] The power cable 80 is connected to a power terminal block 15 attached to the underside of the bottom plate 10 (see FIG. 7). The power terminal block 15 is attached near the first electric wire hole 12 of the bottom plate 10. The power cable 80 is electrically connected to the two electric wires 17 via the power terminal block 15.

[0017] The two electric wires 17 connected to one power terminal block 15, the two electric wires 17 connected to the other power terminal block 15, and the two electric wires 17 connected to the plug connector 16 are each connected one by one by a closed end connector 82 (see FIG. 7). Of the three electric wires included in the power cable 80, one electric wire 17 (the ground electrode electric wire) is electrically connected to the bottom plate 10 of the device body 1 by a crimp terminal.

[0018] The two second electric wire holes 13 are oval holes provided between the center in the longitudinal direction of the bottom plate 10 and each of the first electric wire holes 12 (see FIG. 7). A signal cable connected to an external signal transmission source is inserted into one of the two second electric wire holes 13. The signal cable inserted into the second electric wire hole 13 is connected to a signal terminal block 52 (described later) provided in the light source unit 2. However, a bushing portion 43 of a function block 4 described later is fitted into each second electric wire hole 13, and the bushing portion 43 protects the signal cable from the edge of the second electric wire hole 13 of the bottom plate 10 (see FIG. 7).

[0019] The two bolt insertion holes 14 are oval holes provided between the power terminal block 15 and the second electric wire hole 13 of the bottom plate 10 (see FIG. 7). A suspension bolt protruding from the ceiling is inserted into each of the two bolt insertion holes 14. Then, a nut is fastened to the suspension bolt inserted into the bolt insertion hole 14, thereby fixing the fixture body 1 to the ceiling.

[0020] The two hanging holes 18 are round holes provided closer to the center than the second electric wire hole 13 of the bottom plate 10 (see FIG. 7). The ends of two strings for temporarily hanging the light source unit 2 are inserted into and hung on the two hanging holes 18.

[0021] (2-3) Mounting parts The device main body 1 is provided with two mounting members 3. Each mounting member 3 has one mounting spring 30 (see Figs. 4 and 5). The mounting spring 30 has a pair of spring pieces 300 and a connecting piece 301 that connects the pair of spring pieces 300 together (see Fig. 8). The pair of spring pieces 300 and the connecting piece 301 are formed into a U-shape by bending a strip-shaped metal plate. The tip portion (lower end portion) of each spring piece 300 is bent into a V-shape, so that it is inclined inward toward the tip (lower end).

[0022] These two mounting springs 30 are fixed to the bottom plate 10 of the fixture body 1 by screwing. That is, the connecting piece 301 of each mounting spring 30 is screwed between the power terminal block 15 and the bolt insertion hole 14 in the bottom plate 10. Each of the pair of spring pieces 300 is deformable (flexible) along the short side direction (front-rear direction) of the fixture body 1.

[0023] (2-4) Functional blocks The device main body 1 has two function blocks 4 (see FIG. 4). Each function block 4 has a guide member 40, a restricting member 41, a holding member 42, and a bushing portion 43 (see FIG. 8). The function block 4 is composed of a synthetic resin molded body in which the guide member 40, the restricting member 41, the holding member 42, and the bushing portion 43 are integrally formed. However, the guide member 40, the restricting member 41, the holding member 42, and the bushing portion 43 may each be formed separately, or at least two of them may be formed integrally.

[0024] The limiting member 41 is formed in a rectangular flat plate shape (see FIG. 8). Each limiting member 41 is disposed on the inner side of the pair of spring pieces 300 of the mounting spring 30. When each spring piece 300 is deformed (bent) inward, the spring piece 300 comes into contact with the limiting member 41, thereby limiting the amount of deformation (bend) of each spring piece 300. In other words, the limiting member 41 can prevent the spring pieces 300 of the mounting spring 30 from plastically deforming.

[0025] The guide member 40 has four guide pieces 400 (see FIG. 8). The four guide pieces 400 are arranged one on each end of a pair of limiting members 41. That is, the limiting member 41 is arranged between two guide pieces 400 arranged side by side in the longitudinal direction (left-right direction) of the device body 1.

[0026] Each guide piece 400 is formed in a prismatic shape with a triangular tip (lower end). Each guide piece 400 is formed to a length such that the tip of each guide piece 400 is located ahead (below) the tip of the spring piece 300 of the mounting spring 30 when the function block 4 is attached to the instrument body 1. However, the guide pieces may be formed in a U-shape by connecting the tips (lower ends) of two guide pieces 400 arranged along the short side direction (front-rear direction) of the instrument body 1 among the four guide pieces 400.

[0027] The holding member 42 has a pair of first holding pieces 421, a second holding piece 422, and a third holding piece 423 (see Figs. 7 to 9). The pair of first holding pieces 421 are formed in a long plate shape with one end in the longitudinal direction curved. The pair of first holding pieces 421 are configured to surround the periphery of the bolt insertion hole 14 when viewed from the up-down direction in a state in which the function block 4 is attached to the instrument body 1. The pair of first holding pieces 421 are configured to form a space for wiring between the pair of first holding pieces 421 and the side plate 11 of the instrument body 1 and to hold the electric wire 17 arranged in the space. Thus, by the pair of first holding pieces 421 holding the electric wire 17, it is possible to suppress the occurrence of a defect such as the coating of the electric wire 17 being damaged by the hanging bolt inserted into the bolt insertion hole 14 (see Figs. 7 and 9).

[0028] The second holding piece 422 is formed in a thin plate shape so as to straddle the tips (lower ends) of the pair of limiting members 41 (see Figs. 7 to 9). The second holding piece 422 is configured to form a space for wiring between itself and the bottom plate 10 of the device body 1 and to hold the electric wire 17 arranged in the space (see Figs. 7 and 9).

[0029] The third holding piece 423 is formed in a generally L-shape (see FIG. 8). The third holding piece 423 is disposed on the opposite side (the side adjacent to the power terminal block 15) to the first holding piece 421 across the limiting member 41 (see FIG. 7). The third holding piece 423 is positioned below the electric wire 17 connected to the power terminal block 15 and configured to hold the electric wire 17 (see FIGS. 7 and 9).

[0030] The bushing portion 43 has a main body portion 430 formed in an oval cylindrical shape, a flange portion 431 protruding from the lower end of the main body portion 430 to the outside of the main body portion 430, and a tongue piece 432 protruding from the tip of the flange portion 431 (see FIG. 8). A circular screw insertion hole 433 penetrates the tongue piece 432. The main body portion 430 is inserted into the second electric wire hole 13 in a state in which the function block 4 is attached to the device main body 1 (see FIG. 7). That is, the bushing portion 43 can protect the coating of the signal cable from the edge of the second electric wire hole 13 of the bottom plate 10 by the main body portion 430 inserted into the second electric wire hole 13.

[0031] The function block 4 has a plurality of claws 44 (see FIG. 8). One claw 44 is provided at the tip of the flange portion 431. The remaining two claws 44 are provided at the end of the guide member 40. A screw hole 100 is provided in the bottom plate 10 of the device body 1 near the second electric wire hole 13. In addition, a C-shaped hook groove 101 is provided in the bottom plate 10 between the mounting spring 30 and the power terminal block 15.

[0032] The functional block 4 is attached to the fixture body 1 by hooking the claw 44 provided at the tip of the flange portion 431 onto the edge of the second wire hole 13, hooking the two claws 44 provided at the end of the guide member 40 onto the edges at both ends of the hooking groove 101, and screwing the screw inserted into the screw insertion hole 433 of the tongue piece 432 into the screw hole 100.

[0033] (2-5) Light source unit The light source unit 2 includes a light source module 20, a support member 21, a cover 22, a power supply unit 5, and a pair of end members 6 (see FIGS. 4 and 5).

[0034] (2-5-1) Light source module The light source module 20 has two substrates 200 and a plurality of light emitting elements (LEDs 201) mounted on the surface (lower surface) of each substrate 200 (see FIG. 5). Each substrate 200 is formed in a long rectangular shape. Conductors for connecting the plurality of LEDs 201 are formed on the surface of each substrate 200. The conductors of the two substrates 200 are connected via connectors mounted on the longitudinal ends of each substrate 200.

[0035] Each of the LEDs 201 is a packaged white LED for illumination. However, the light emitting element of the light source module 20 may be a light emitting element other than an LED, such as an organic electroluminescence element or a semiconductor laser element.

[0036] (2-5-2) Power supply unit The power supply unit 5 includes a power supply circuit 50 configured by a printed circuit and a power supply case 51 that houses the power supply circuit 50 (see FIG. 4 and FIG. 11). The power supply case 51 is formed in a long box shape with one surface (bottom surface) open. The power supply circuit 50 includes a rectifier circuit that rectifies the AC voltage supplied from an external power supply via an electric wire 54, a boost circuit that boosts and smoothes the pulsating voltage rectified by the rectifier circuit, a step-down circuit that steps down the DC voltage output from the step-up circuit, and a control circuit that controls the step-down circuit. The control circuit controls the step-down circuit so that the current (load current) supplied to the light source module 20 matches a target value to make it a constant current. The control circuit also adjusts the target value of the load current according to a signal (dimming signal) input from a signal transmission source via a signal cable and a signal terminal block 52 to dim the light source module 20. The signal transmission source is, for example, a lighting controller installed on the wall of an office. A receptacle connector 55 connectable to the plug connector 16 of the device body 1 is attached to the tip of the electric wire 54 drawn out from the power supply case 51 (see FIG. 10).

[0037] (2-5-3) Supporting member The support member 21 has a main portion 210 formed in a long plate shape, and a pair of side wall portions 211 standing upward from a pair of side ends (front end and rear end) along the longitudinal direction (left-right direction) of the main portion 210 (see FIG. 5). The pair of side wall portions 211 are formed in a long rectangular shape.

[0038] Furthermore, the support member 21 has a positioning piece 212, a locking piece 213, a pair of cover attachment pieces 214, a pair of hooks 31, and a pair of protrusions 215 (see FIG. 11).

[0039] The positioning piece 212 is formed in a rectangular column shape protruding downward from the rear end of the lower surface of the main part 210 (see FIG. 11). The locking piece 213 is formed in an L shape protruding downward from the front end of the lower surface of the main part 210. The positioning piece 212 and the locking piece 213 are formed over the entire length of the main part 210 in the longitudinal direction so as to be parallel to each other along the longitudinal direction of the main part 210. The board 200 of the light source module 20 is inserted into the gap between the locking piece 213 and the main part 210, and the board 200 is locked to the locking piece 213 (see FIG. 11). The positioning piece 212 determines the position of the board 200 in the front-rear direction of the main part 210. The board 200 is screwed to the main part 210 by a plurality of screws.

[0040] The pair of cover attachment pieces 214 are each formed in an L-shape and protrude downward from each side end along the longitudinal direction of the main portion 210 (see FIG. 11). A pair of attachment portions 222 of the cover 22 are hooked onto each of the cover attachment pieces 214, as described below.

[0041] The pair of hooks 31 each protrude inward from approximately the center in the up-down direction on the inner surfaces of the pair of side wall portions 211 over the entire length of the side wall portions 211 in the longitudinal direction (see FIG. 11). However, the tip portion of each hook portion 31 is bent downward. The pair of hooks 31 hook onto the tip portions of the respective spring pieces 300 of the two mounting springs 30 attached to the appliance body 1. In other words, the pair of hooks 31, together with the mounting springs 30, constitute the mounting member 3.

[0042] The pair of protrusions 215 protrude inward from lower end portions of the inner surfaces of the pair of side wall portions 211 over the entire longitudinal length of each of the side wall portions 211 (see FIG. 11). Note that the main portion 210, the pair of side wall portions 211, the positioning piece 212, the locking piece 213, the pair of cover mounting pieces 214, the pair of hook portions 31, and the pair of protrusions 215 are preferably formed integrally by extrusion molding of a metal material such as an aluminum alloy.

[0043] (2-5-4) Cover The cover 22 has a front wall 220, a pair of side walls 221, and a pair of mounting parts 222 (see FIG. 5). The front wall 220 is formed in a long rectangular shape. The pair of side walls 221 are each formed in a long rectangular shape and protrude upward from both ends (front end and rear end) along the longitudinal direction of the front wall 220. The pair of mounting parts 222 are each formed in a long U-shape and protrude inward from the upper end of each side wall part 211 over the entire length of the side wall part 211 in the longitudinal direction. Here, the front wall 220, the pair of side wall parts 211, and the pair of mounting parts 222 are preferably formed integrally by extrusion molding of a synthetic resin having translucency, such as polycarbonate resin or acrylic resin. Note that the cover 22 is preferably 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.

[0044] The cover 22 is attached to the support member 21 by hooking the pair of attachment portions 222 one by one onto the pair of cover attachment pieces 214 of the support member 21 (see FIG. 11). The cover 22 attached to the support member 21 covers the light source module 20 attached to the lower surface of the main part 210.

[0045] (2-5-5) End members The end member 6 has a cover end portion 60, an end cap portion 61, and a mounting fixture 62 (see Figs. 12 to 14). The cover end portion 60 has a tube portion 600, a wall portion 601, a protruding wall 602, a base 603, a pair of connecting portions 604, and a pair of pressing pieces 605.

[0046] The cylinder portion 600 is formed in a rectangular cylinder shape. The wall portion 601 is formed in a rectangular flat plate shape, and is connected to one axial end of the cylinder portion 600 to close the one axial end of the cylinder portion 600. A triangular prism-shaped mating protrusion 606 with the axial direction being the front-rear direction is provided on the upper surface of the wall portion 601 (see FIG. 13).

[0047] The protruding wall 602 is formed in a rectangular flat plate shape and protrudes upward from a position on the upper surface of the tube portion 600 near the wall portion 601. The base 603 is formed in a rectangular flat plate shape and is disposed from the upper end of the protruding wall 602 in parallel with the upper surface of the tube portion 600.

[0048] The pair of connecting parts 604 are each formed in an inverted L-shape and protrude upward from both front and rear ends on the upper surface of the base 603 that are farther from the wall part 601. The pair of pressing pieces 605 are each formed in a rectangular flat plate shape and protrude from both front and rear ends of the upper part at the opening end (the end opposite to the wall part 601) of the tube part 600 along the axial direction of the tube part 600. The tube part 600, the wall part 601, the protruding wall 602, the base 603, the pair of connecting parts 604, and the pair of pressing pieces 605 are integrally formed as a synthetic resin molding having translucency such as acrylic resin or polycarbonate resin. However, in order to diffuse the light emitted from the light source module 20 like the cover 22, it is preferable that the cover end part 60 is formed in a milky white color by mixing a filler into the synthetic resin material.

[0049] The end cap portion 61 has a main body 610 having a hole 611 for passing wires through, and a lid body 63 that is detachably attached to the main body 610 and closes the hole 611 when attached to the main body 610. The main body 610 and the lid body 63 are each made of a synthetic resin molding that does not have light-transmitting properties.

[0050] The main body 610 is formed in a U-shaped flat plate shape. A triangular prism-shaped recess (fitting recess 618) is formed on the lower surface of the main body 610 (see FIG. 14). The front surface of the main body 610 is flat, and the back surface of the main body 610 is provided with a pair of vertical pieces 612, a horizontal piece 613, a pair of support pieces 614, and a pair of protruding pieces 615.

[0051] The pair of vertical pieces 612 are formed in a roughly trapezoidal shape, and protrude from both the front and rear of the hole 611 on the back surface of the main body 610 in the thickness direction of the main body 610. The horizontal piece 613 is formed in a rectangular flat plate shape, and protrudes from below the hole 611 on the back surface of the main body 610 in the thickness direction of the main body 610 so as to connect the lower ends of the pair of vertical pieces 612.

[0052] A coupling groove 616 is provided at each end in the front-rear direction of the horizontal piece 613. These coupling grooves 616 are opened at the tip side of the horizontal piece 613 and are formed in a quadrangular shape with the thickness direction of the main body 610 as the longitudinal direction. Furthermore, a protrusion 617 is provided on the upper surface of the horizontal piece 613 near the coupling groove 616. These protrusions 617 are formed in a quadrangular column shape with the thickness direction of the main body 610 as the axial direction.

[0053] The pair of support pieces 614 are formed in a square pyramid shape and protrude from the side surfaces of the pair of vertical pieces 612 along the main body 610 in a direction approaching the hole 611. Here, a space is formed between the pair of support pieces 614 and the main body 610, into which the flange portion 631 of the lid body 63 is slidably inserted.

[0054] The pair of protrusions 615 are formed in a rectangular column shape and protrude outward from approximately the center of the vertical pieces 612 on the outer surfaces of the pair of vertical pieces 612 along the thickness direction (front-to-back direction) of the vertical pieces 612 in the vertical direction.

[0055] The lid body 63 has a main body portion 630 formed in a rectangular box shape, a flange portion 631 protruding from the bottom surface and both front and rear side surfaces of the main body portion 630, a pair of support portions 632, and a claw portion 633 (see Figures 13 and 14).

[0056] The surface of main body 630 is a flat surface. The portions of flange 631 protruding from both front and rear side surfaces of main body 630 are formed so as to taper in thickness downward.

[0057] The pair of support portions 632 are each formed in a trapezoidal shape, and protrude in the left-right direction from both front and rear ends below the rear surface of the main body portion 630. The claw portion 633 is provided in the center in the front-rear direction on the lower surface of the main body portion 630, and protrudes toward the front surface side of the main body portion 630 beyond the flange portion 631.

[0058] The mounting fixture 62 has a fixed plate 620, a connecting plate 621, and a support plate 622. The fixed plate 620 is formed in a rectangular flat plate shape. The support plate 622 is formed in a rectangular flat plate shape smaller than the fixed plate 620. The connecting plate 621 is formed in a Z shape, and connects an end of the fixed plate 620 and an end of the support plate 622. The fixed plate 620, the connecting plate 621, and the support plate 622 are integrally formed by bending a single metal plate.

[0059] The fixing plate 620 has two circular screw insertion holes 623. The mounting fixture 62 is fixed to the support member 21 by screwing the screws inserted into the two screw insertion holes 623 of the fixing plate 620 into the main portion 210 of the support member 21.

[0060] The fixed plate 620, the connecting plate 621 and the support plate 622 are formed with two mating grooves 624 in parallel with each other (see FIGS. 12 to 14).

[0061] (2-5-6) Sealing materials The light source unit 2 includes a sealing member 7. The sealing member 7 has a function of preventing foreign matter (dust, insects, etc.) from entering through a gap generated between the cover end portion 60 of the end member 6 and the cover 22.

[0062] The seal member 7 has a main body 70, a seal piece 71, and a pair of ribs 72 (see Figs. 13 and 14). The seal member 7 is formed of, for example, silicone resin. The main body 70 is formed in a roughly rectangular tube shape. However, the upper wall of the main body 70 is formed thinner than the lower wall and the front and rear walls. The seal piece 71 is formed in a U-shape and protrudes outward from near the tip of the lower wall and the front and rear walls of the main body 70. The pair of ribs 72 are each formed in a rectangular flat plate shape and protrude upward from both the front and rear ends of the upper wall of the main body 70 (see Fig. 13).

[0063] (2-6) Light source unit assembly process Next, the assembly process of the light source unit 2 will be described.

[0064] (2-6-1) Installation process of the power supply unit and the signal terminal block to the support member First, the power supply case 51 is screwed to the main part 210 at approximately the center of the upper surface of the main part 210 of the support member 21, thereby attaching the power supply unit 5 to the support member 21 (see FIG. 10). At this time, the open surface of the power supply case 51 is closed by the main part 210 (see FIG. 11). Also, the power supply case 51 has a hook piece 510 cut out and raised so as to protrude outward (see FIG. 11). Then, the hook piece 510 is hooked on the hook part 31 of the side wall part 211, thereby preventing the power supply case 51 from floating up from the main part 210 of the support member 21.

[0065] The two signal terminal blocks 52 are attached to the upper surface of the main part 210 of the support member 21 by two mounting bases 23 (see Figs. 10 and 15). Each mounting base 23 has a fixing part 230 to which the signal terminal block 52 is fixed, and a screw fastening piece 231 to be screwed to the main part 210. A step is formed between the fixing part 230 and the screw fastening piece 231, and when the screw fastening piece 231 is screwed to the main part 210, a space is formed between the fixing part 230 and the main part 210 (see Fig. 15). A V-shaped protrusion 233 is provided at an end of the fixing part 230, and the protrusion 233 is hooked onto a protrusion 215 provided on the side wall part 211 of the support member 21, whereby the fixing part 230 is supported by the side wall part 211 (see Fig. 15). The two signal terminal blocks 52 and the power supply unit 5 are each connected by two signal lines 53 (see FIG. 10).

[0066] The fixing parts 230 are provided with string attachment parts 232 to which a string for temporary hanging is attached. The lower end of the string for temporary hanging is attached to the string attachment part 232. The string for temporary hanging is used when attaching the light source unit 2 to the fixture body 1.

[0067] (2-6-2) Mounting process of the light source module to the support member Next, the light source module 20 is attached to the lower surface of the main part 210. The light source module 20 is attached to the main part 210 by inserting the board 200 into the gap between the locking piece 213 and the main part 210 and screwing the board 200 to the main part 210 in a state where the board 200 is positioned by the positioning piece 212 (see FIGS. 11 and 16). At this time, the light source module 20 and the power supply unit 5 are electrically connected through a through hole provided in the main part 210.

[0068] (2-6-3) Attaching the cover to the support member Next, the mounting portion 222 of the cover 22 is inserted from one end in the longitudinal direction of the cover 22 into the gap between the underside of the main portion 210 and the cover mounting piece 214, thereby attaching the cover 22 to the main portion 210 (see FIG. 11). Note that the cover 22 is movable relative to the main portion 210 along the longitudinal direction of the main portion 210, since the mounting portion 222 is simply hooked onto the cover mounting piece 214 of the main portion 210.

[0069] (2-6-4) End member installation process First, the main body 70 of the seal member 7 is attached to the tubular portion 600 of the cover end portion 60 so as to cover the tubular portion 600. Then, the pair of coupling portions 604 of the cover end portion 60 are inserted one by one into the pair of coupling grooves 616 of the main body 610 of the end cap portion 61, and the cover end portion 60 and the main body 610 of the end cap portion 61 are coupled together (see FIG. 12). At this time, the coupling protrusions 606 of the cover end portion 60 and the coupling recesses 618 of the end cap portion 61 are coupled together, thereby positioning the cover end portion 60 and the end cap portion 61.

[0070] Next, the pair of protrusions 617 of the main body 610 of the end cap portion 61 are engaged with the two engagement grooves 624 of the attachment tool 62 one by one, thereby attaching the attachment tool 62 to the end cap portion 61 .

[0071] Then, the flange portion 631 is inserted into the space between the pair of support pieces 614 of the end cap portion 61 and the main body 610, thereby attaching the lid body 63 to the end cap portion 61. Note that the lid body 63 is prevented from coming off the main body 610 by the claw portions 633 provided on the main body portion 630 being caught in recesses 619 provided on the back surface of the main body 610 of the end cap portion 61 (see FIG. 16).

[0072] Here, with the lid body 63 attached to the end cap portion 61, the support plate 622 of the mounting fixture 62 is sandwiched between the pair of support parts 632 of the lid body 63 and the horizontal piece 613 of the main body 610 (see FIG. 16). As a result, the pair of support parts 632 restrict the vertical movement of the mounting fixture 62, so that the engagement between the protrusion 617 and the engagement groove 624 will not come off.

[0073] The end members 6 assembled as described above are attached to both ends of the support member 21 and the cover 22 in the longitudinal direction, one by one. Specifically, the front and rear end portions of the fixing plate 620 of the mounting fixture 62 are inserted between the upper surface of the main part 210 and the pair of protrusions 215. In addition, the pair of protrusions 615 of the end cap part 61 are inserted under the hook parts 31 of the pair of side wall parts 211. In other words, the pair of protrusions 615 of the end cap part 61 are hooked on the hook parts 31 in the vertical direction. As a result, rattling of the end cap part 61 with respect to the support member 21 is suppressed. Then, the fixing plate 620 is screwed to the main part 210 of the support member 21 by two screws inserted into the two screw insertion holes 623 of the fixing plate 620.

[0074] Furthermore, the tubular portion 600 of the cover end portion 60 and the seal member 7 are inserted into the cover 22, and both longitudinal ends of the support member 21 are closed by the main body 610 of the end cap portion 61. The seal piece 71 of the seal member 7 inserted into the cover 22 closes the gap between the cover end portion 60 and the cover 22 by coming into close contact with the inner surfaces of the front wall 220 and the side wall portion 211 of the cover 22 (see FIG. 16).

[0075] Here, if the main body 70 of the sealing member 7 is in close contact with the inner surfaces of the front wall 220 and the side wall portion 211 of the cover 22, the frictional force between the sealing member 7 and the cover 22 may become too large when the cover 22 expands and contracts due to heat, causing excessive stress to be generated in the cover 22.

[0076] However, by closely adhering the sealing piece 71 of the sealing member 7 to the inner surfaces of the front wall 220 and the side wall portion 211 of the cover 22 as described above, the frictional force between the sealing member 7 and the cover 22 does not become greater than necessary, and the stress generated in the cover 22 can be suppressed.

[0077] Furthermore, when the end member 6 is attached to the longitudinal ends of the support member 21 and the cover 22, the pair of pressing pieces 605 of the cover end portion 60 are disposed at positions overlapping with the ends of the substrate 200 of the light source module 20 in the vertical direction (see FIG. 16). Therefore, when an external force is applied to the cover end portion 60, the pressing pieces 605 press the substrate 200, thereby preventing the cover end portion 60 from falling into the cover 22.

[0078] As described above, the end members 6 are attached to both ends of the support member 21 and the cover 22 in the longitudinal direction, respectively, and thus the assembly of the light source unit 2 is completed.

[0079] (2-7) Installation procedure for lighting fixtures Next, the procedure of the installation work for mounting the lighting fixture A1 on the ceiling will be described. The worker performing the installation work inserts the power cable 80, which is drawn into the room from a hole provided in the ceiling, into the first wire hole 12 of the fixture body 1. The worker also inserts the signal cable, which is drawn into the room from a hole provided in the ceiling, into the second wire hole 13. The worker then inserts the two suspension bolts protruding downward from the ceiling into the two bolt insertion holes 14 of the fixture body 1, one by one, and fastens nuts to each suspension bolt to mount the fixture body 1 to the ceiling. The worker also connects the power cable 80 to the power terminal block 15.

[0080] Next, the worker temporarily hangs the light source unit 2 on the fixture body 1 with the two strings by hooking one end of each of the two strings attached to the string attachment parts 232 of the two mounting bases 23 into the two hanging holes 18 of the fixture body 1. In this state, the worker connects the receptacle connector 55 of the power supply unit 5 to the plug connector 16 of the fixture body 1. Furthermore, the worker connects the signal line of the signal cable inserted into the second electric wire hole 13 of the fixture body 1 to the signal terminal block 52.

[0081] Then, while supporting the light source unit 2 in the temporarily hung state with both hands, the worker brings it closer to the fixture body 1, and inserts the mounting spring 30 of the fixture body 1 between the pair of side wall portions 211 of the support member 21. At this time, the tip of the side wall portion 211 abuts against the guide piece 400 of the guide member 40, so that the mounting spring 30 is securely inserted between the pair of side wall portions 211. This makes it possible to prevent the spring piece 300 of the mounting spring 30 from protruding outside the side wall portion 211, preventing the spring piece 300 from being subjected to excessive force and causing plastic deformation.

[0082] In addition, the tip portions of the pair of spring pieces 300 of the mounting spring 30 are inclined inward (away from the hook portion 31). Therefore, the worker can smoothly bend the tip portions of the spring pieces 300 without getting them caught by the hook portion 31, and finally, the spring pieces 300 can be securely hooked onto the hook portion 31.

[0083] Furthermore, since the amount of deformation (amount of deflection) of the spring piece 300 is limited by the limiting member 41, it is possible to prevent the occurrence of problems such as plastic deformation caused by application of an excessive force to the spring piece 300.

[0084] The mounting spring 30 inserted between the pair of side wall portions 211 has a pair of spring pieces 300 with their respective tip portions hooked onto the hook portions 31 on the inner surfaces of the side wall portions 211 (see FIGS. 11 and 15). That is, the light source unit 2 is mounted to the fixture body 1 by the mounting member 3 consisting of the two mounting springs 30 and the hook portions 31. If an operator pulls the light source unit 2 downward, the tip portion of the mounting spring 30 will come off the hook portions 31, and the light source unit 2 can be removed from the fixture body 1.

[0085] Here, as shown in FIG. 17, the light source unit 2 generates a small gap between the end of the cover 22 in the longitudinal direction and the wall portion 601 of the cover end portion 60 of the end member 6. That is, while the power supply unit 5 is operating and the light source module 20 is turned on, the temperature of the cover 22 rises, and the cover 22 made of a synthetic resin molded body expands due to thermal expansion. If there is no gap between the end of the cover 22 and the wall portion 601 of the cover end portion 60, the end of the cover 22 expanded due to thermal expansion may come into contact with the wall portion 601, and the expansion of the cover 22 may be prevented, resulting in defects such as warping or deformation of the cover 22. However, the light source unit 2 provides a gap between the end of the cover 22 and the wall portion 601 of the cover end portion 60 as described above, so that the end of the cover 22 expanded due to thermal expansion is less likely to come into contact with the wall portion 601. As a result, the light source unit 2 and the lighting device A1 can suppress the occurrence of defects such as breakage of the cover 22 due to the expansion of the cover 22 caused by thermal expansion.

[0086] Even if a small gap is generated between the longitudinal end of the cover 22 and the wall portion 601 of the cover end portion 60 of the end member 6, the boundary portion between the cover 22 and the support member 21 is blocked by a pair of ribs 72 of the seal member 7 (see FIG. 17). Therefore, it is possible to prevent foreign matter from entering the cover 22 through the gap at the boundary portion between the cover 22 and the support member 21.

[0087] Incidentally, there are cases where a plurality of lighting fixtures A1 are attached to the ceiling so as to be lined up in a row with no gaps between them. In this case, the lid body 63 is removed from the main body 610 of the end cap portion 61, and the power cable 80 and the signal cable are routed and wired through the hole 611 of the end cap portion 61. Thus, the worker only needs to pull and remove the lid body 63 from the end cap portion 61 of the light source unit 2 before attaching it to the fixture main body 1, which improves the workability of the wiring work.

[0088] (3) Features of the embodiment One feature of the lighting fixture A1 according to this embodiment is that a power terminal block 15 to which a power cable 80 is connected is provided on the fixture body 1, and a signal terminal block 52 to which a signal cable is connected is provided on the light source unit 2. However, it is also possible that the power terminal block 15 is provided on the light source unit 2, and the signal terminal block 52 is provided on the light source unit 2.

[0089] According to the above-mentioned features, it is easier to secure extra space for wiring the power cable 80 and the signal cable, compared to a case where both the power terminal block 15 and the signal terminal block 52 are provided together on either the fixture body 1 or the light source unit 2. In other words, when both the power terminal block 15 and the signal terminal block 52 are attached to the fixture body 1, it is necessary to increase the width dimension (length dimension in the front-rear direction) of the fixture body 1 in order to secure space in the width direction of the fixture body 1 for wiring the power table 80 and the signal cable.

[0090] In contrast, in the lighting fixture A1 of the embodiment, the power terminal block 15 and the signal terminal block 52 are provided separately in the fixture body 1 and the light source unit 2, so that space can be secured in the height direction (up and down direction) of the fixture body 1 for wiring the power cable 80 and the signal cable.

[0091] As a result, the lighting fixture A1 according to the embodiment makes it easier to ensure space for wiring the power cable 80 and the signal cable, and reduces the extra space required for the power cable 80 and the signal cable, thereby enabling the lighting fixture A1 to be slimmer.

[0092] Here, the electric cable used for the power cable 80 (for example, a VVF cable) is characterized by being harder and less prone to bending than the electric cable used for the signal cable (for example, a CPEV cable for signal transmission). Therefore, it is easier to determine the amount (length) of the power cable 80 to be drawn from the first electric wire hole 12 when the power terminal block 15 is provided on the fixture body 1 fixed to the construction material (ceiling finishing material). In other words, when the power terminal block 15 is provided on the light source unit 2, when the light source unit 2 is attached to the fixture body 1, the power cable 80 drawn from the first electric wire hole 12 needs to be returned from the first electric wire hole 12 to the ceiling space, which reduces workability. Therefore, the lighting fixture A1 according to the embodiment can improve the workability of the wiring work compared to when the power terminal block 15 is provided on the light source unit 2.

[0093] In addition, in the lighting fixture A1 according to the embodiment, the first electric wire hole 12, the power terminal block 15, the second electric wire hole 13, the signal terminal block 52, and the power unit 5 are arranged in the longitudinal direction of the fixture body 1 in that order from the longitudinal end (see FIG. 4). That is, since the power terminal 15 is arranged immediately adjacent to the first electric wire hole 12, the amount (length) of the power cable 80 drawn from the first electric wire hole 12 can be minimized. Furthermore, since the signal terminal block 52 is arranged immediately adjacent to the second electric wire hole 13, the amount (length) of the signal cable drawn from the second electric wire hole 13 can also be minimized.

[0094] Thus, in the lighting fixture A1 according to the embodiment, it is possible to reduce the amount (length) of each of the power cable 80 introduced from the first wire hole 12 and the signal cable introduced from the second wire hole 13. As a result, the lighting fixture A1 according to the embodiment can be further slimmed down by reducing the extra space for the power cable 80 and the signal cable.

[0095] Furthermore, in the lighting fixture A1 according to the embodiment, the first electric wire hole 12, the power terminal block 15, the second electric wire hole 13, the signal terminal block 52, and the power supply unit 5 are arranged so as not to overlap one another in the mounting direction (vertical direction) of the light source unit 2 to the fixture body 1 (see FIG. 4). As a result, the lighting fixture A1 according to the embodiment can reduce the height dimension (vertical length dimension) compared to a case in which the first electric wire hole 12, the power terminal block 15, the second electric wire hole 13, the signal terminal block 52, and the power supply unit 5 are arranged so as to overlap one another in the vertical direction.

[0096] Moreover, in the lighting fixture A1 according to the embodiment, the bolt insertion hole 14 is disposed between the power terminal block 15 and the signal terminal block 52 in the longitudinal direction of the fixture body 1 (see FIG. 4). Thus, according to the above configuration, the suspension bolt inserted through the bolt insertion hole 14 is less likely to come into contact with the power terminal block 15 and the signal terminal block 52, thereby improving the workability of the installation work.

[0097] (4) Variations A modified example of lighting fixture A1 according to the embodiment will be described with reference to Fig. 18 and Fig. 19. However, lighting fixture A2 of the modified example has a common configuration with lighting fixture A1, except for the structure of functional block 4. Therefore, in lighting fixture A2 of the modified example, components common to lighting fixture A1 are denoted by the same reference numerals, and illustrations and descriptions thereof will be omitted as appropriate.

[0098] In the functional block 4 of the lighting fixture A2 of the modified example, the third holding piece 423 of the holding member 42 is formed in an L-shape. A pair of claws 44 is provided on each of the tip of the flange portion 431 of the bushing portion 43 and the upper end of the guide piece 400 of the guide member 40 (see FIG. 18 ). The functional block 4 is attached to the fixture body 1 by hooking these claws 44 onto the edges of the second electric wire hole 13 and the hook hole 102 of the bottom plate 10.

[0099] In the lighting fixture A2 of the modified example, similarly to the lighting fixture A1, the electric wires 17 are held by the holding member 42, and the covering of the electric wires 17 can be prevented from being damaged.

[0100] (5) Summary A lighting fixture (A1; A2) according to a first embodiment of the present disclosure includes a long fixture body (1), a long light source unit (2) detachably attached to the fixture body (1), and a power supply unit (5) that supplies power to the light source unit (2). The lighting fixture (A1; A2) according to the first embodiment includes a power supply terminal block (15) for connecting an electric wire (power cable 80) connected to an external power source and the power supply unit (5), and a signal terminal block (52) for connecting a signal line connected to an external signal transmission source and the power supply unit (5). One of the power supply terminal block (15) and the signal terminal block (52) is provided on the fixture body (1), and the other terminal block excluding the one of the power supply terminal block (15) and the signal terminal block (52) is provided on the light source unit (2).

[0101] The lighting fixture (A1; A2) according to the first aspect makes it easier to ensure space for wiring electric wires and signal wires, and reduces unnecessary space for electric wires and signal wires, thereby enabling a slimmer design.

[0102] A lighting fixture (A1; A2) according to a second aspect of the present disclosure can be realized by combining it with the first aspect. In the lighting fixture (A1; A2) according to the second aspect, it is preferable that the power terminal block (15) is provided on the fixture body (1) and the signal terminal block (52) is provided on the light source unit (2).

[0103] The lighting fixture (A1; A2) according to the second aspect can improve the workability of wiring work compared to a case in which the power terminal block (15) is provided in the light source unit (2).

[0104] A lighting fixture (A1; A2) according to a third aspect of the present disclosure can be realized by combining with the second aspect. In the lighting fixture (A1; A2) according to the third aspect, the light source unit (2) preferably has a long light source module (20) and a support member (21) that supports the light source module (20) and the power supply unit (5).

[0105] In the lighting fixture (A1; A2) of the third aspect, the power supply unit (5) is supported by the support member (21) of the light source unit (2), so that the length of the wiring for connecting the power supply unit (5) and the light source module (20) can be shortened.

[0106] A lighting fixture (A1; A2) according to a fourth aspect of the present disclosure can be realized by combining it with any one of the first to third aspects. In the lighting fixture (A1; A2) according to the fourth aspect, the fixture body (1) is preferably formed in a long plate shape and is provided with a first electric wire hole (12) for drawing in an electric wire and a second electric wire hole (13) for drawing in a signal wire. The first electric wire hole (12), the power terminal block (15), the second electric wire hole (13), and the signal terminal block (52) are preferably arranged in order along the longitudinal direction of the fixture body (1).

[0107] The lighting fixture (A1; A2) according to the fourth aspect can reduce the amount (length) of each of the electric wires introduced from the first electric wire hole (12) and the signal wires introduced from the second electric wire hole (13). As a result, the lighting fixture (A1; A2) according to the fourth aspect can reduce the extra space for the electric wires and the signal wires, thereby achieving further slimming.

[0108] A lighting fixture (A1; A2) according to a fifth aspect of the present disclosure can be realized by combining with the fourth aspect. In the lighting fixture (A1; A2) according to the fifth aspect, the first electric wire hole (12), the power terminal block (15), the second electric wire hole (13), the signal terminal block (52), and the power supply unit (5) are preferably arranged so as not to overlap each other in the mounting direction of the light source unit (2) relative to the fixture body (1).

[0109] The lighting fixture (A1; A2) of the fifth aspect can reduce the height dimension compared to a case in which the first wire hole (12), the power terminal block (15), the second wire hole (13), the signal terminal block (52), and the power unit (5) are arranged so as to overlap in the vertical direction.

[0110] A lighting fixture (A1; A2) according to a sixth aspect of the present disclosure can be realized by combining with the fourth or fifth aspect. In the lighting fixture (A1; A2) according to the sixth aspect, the fixture body (1) preferably has a bolt insertion hole (14) through which a bolt for attaching to a construction material is inserted. The bolt insertion hole (14) is preferably disposed between the power terminal block (15) and the signal terminal block (52) in the longitudinal direction of the fixture body (1).

[0111] The lighting fixtures (A1; A2) of the sixth aspect reduce the possibility that the hanging bolt inserted into the bolt insertion hole (14) will come into contact with the power terminal block (15) and the signal terminal block (52), thereby improving the workability of installation work. [Explanation of symbols]

[0112] A1;A2 Lighting equipment 1. Equipment body 2 Light source unit 5 Power supply unit 10 Bottom plate 12 1st wire hole 13 2nd wire hole 14 Bolt insertion hole 15 Power terminal block 20 Light source module 21 Support member 52 Signal terminal block 80 Power cable (electrical wire)

Claims

1. The device includes a long fixture body, a long light source unit detachably attached to the fixture body, a power supply unit that supplies power to the light source unit, a power supply terminal block for connecting an electric wire connected to an external power supply to the power supply unit, and a signal terminal block for connecting a signal wire connected to an external signal transmission source to the power supply unit; One of the power terminal block and the signal terminal block is provided on the device body, and the other of the power terminal block and the signal terminal block excluding the one terminal block is provided on the light source unit, The device body has a bottom plate formed in an elongated plate shape, a first electric wire hole provided in the bottom plate for drawing in the electric wire, and a second electric wire hole provided in the bottom plate for drawing in the signal wire, The first wire holes are provided at both ends of the bottom plate in a longitudinal direction, The power supply terminal block, the signal terminal block, the power supply unit, and the second wire hole are disposed between two of the first wire holes. Lighting fixtures.

2. The power supply terminal block is provided on the fixture body, and the signal terminal block is provided on the light source unit.

2. The lighting device of claim 1.

3. The light source unit includes a long light source module and a support member that supports the light source module and the power supply unit.

3. A lighting device according to claim 2.

4. the first wire hole, the power terminal block, the second wire hole, and the signal terminal block are arranged in sequence along the longitudinal direction of the bottom plate; A lighting device according to any one of claims 1 to 3.

5. The first wire hole, the power terminal block, the second wire hole, the signal terminal block, and the power supply unit are arranged so as not to overlap each other in the mounting direction of the light source unit relative to the fixture body.

5. A lighting device according to claim 4.

6. The bottom plate has a bolt insertion hole through which a bolt for attaching to a construction material is inserted, The bolt insertion hole is disposed between the power terminal block and the signal terminal block in the longitudinal direction of the bottom plate.

6. A lighting fixture according to claim 4 or 5.

Images