Lighting fixtures

Abstract

To provide a luminaire whose design can be improved.SOLUTION: A luminaire comprises a light source module 31, a unit body 30, a first conductive wire 323, and a second conductive wire 324. The light source module 31 comprises a long board 310, a plurality of light emitting elements 311 provided on an arrangement surface 312 of the board 310, and a connector 321 provided on the arrangement surface 312 of the board 310, and for supplying power to the plurality of light emitting elements 311. The unit body 30 comprises a bottom surface 302 supporting the board 310, and an opening part 322 formed in a region in a short direction of the board 310, and at a position that does not overlap with the board 310. The first conductive wire 323 and the second conductive wire 324 are inserted into the opening part 322 of the unit body 30, and one ends of them are electrically connected to the connector 321.SELECTED DRAWING: Figure 6

Description

Technical Field

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[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture in which a plurality of light emitting elements are arranged on a substrate.

Background Art

[0002] As a conventional example, the lighting device described in Patent Document 1 is exemplified. The lighting device described in Patent Document 1 includes a substantially rectangular substrate having a pattern for electrically connecting a plurality of LEDs, and a fixed connector mounted at a corner of the substrate and electrically connected to the LEDs via the pattern.

Prior Art Documents

Patent Documents

[0003] <000第000017号

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the lighting device described in Patent Document 1, the power supply unit that supplies power to the LED module is disposed outside the longitudinal direction of the longitudinal end of the LED module. In such a structure, the LED substrate cannot be extended to the end of the main body. Therefore, light emitting elements cannot be arranged at the longitudinal ends of the main body, and the design property of the lighting device is deteriorated.

[0005] An object of the present disclosure is to provide a lighting fixture capable of improving the design property.

Means for Solving the Problems

[0006] A lighting fixture according to one aspect of the present disclosure comprises a light source module, a support member, and a conductive wire. The light source module has a long substrate, a plurality of light-emitting elements provided on a first surface of the substrate, and a power supply connection portion provided on the first surface of the substrate for supplying power to the plurality of light-emitting elements. The support member has a first main surface that supports the substrate, a second main surface opposite to the first main surface, and an opening formed in a region in the short direction of the substrate and not overlapping with the substrate. The conductive wire is inserted through the opening of the support member and one end is electrically connected to the power supply connection portion. [Effects of the Invention]

[0007] The lighting fixtures disclosed herein have the effect of improving design aesthetics. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view from below of a lighting fixture according to an embodiment of this disclosure. [Figure 2] Figure 2 is a perspective view of the light source unit of the same lighting fixture, seen from above. [Figure 3] Figure 3 is a perspective view of the light source unit of the same lighting fixture, seen from below. [Figure 4] Figure 4 is a perspective view from below of the same light source unit with the cover removed. [Figure 5] Figure 5 is a perspective view of the light source unit shown above, seen from below. [Figure 6] Figure 6 is a partial front view of the conductive wire connection structure of the light source unit shown above. [Figure 7] Figure 7 is a perspective view of the same conductive wire connection structure as shown above, viewed from below. [Modes for carrying out the invention]

[0009] 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.

[0010] (Embodiment) A lighting fixture 1 according to an embodiment of this disclosure will now be described. The lighting fixture 1 is configured to be mounted on a system ceiling. A system ceiling is a suspended ceiling made up of unit ceilings, and has the function of allowing easy installation of equipment (also called equipment) such as lighting fixtures and air conditioning vents by placing ceiling panels on top of it (see Japanese Industrial Standard JIS A1445 "Test Method for System Ceiling Components"). However, the lighting fixture according to the embodiment of this disclosure is not limited to lighting fixtures for system ceilings, and may be a lighting fixture that can be mounted on a ceiling with a structure other than a system ceiling.

[0011] (1) Basic configuration of lighting fixtures As shown in Figure 1, the lighting fixture 1 mainly comprises a fixture body 2 and two light source units 3. In the following description, unless otherwise specified, the up / down, left / right, and front / back directions indicated by arrows in Figure 1 are defined as the up / down, left / right, and front / back directions of the lighting fixture 1.

[0012] (2) Main body of the device As shown in Figure 1, the fixture body 2 mainly consists of two housings 20 and two connecting plates 21. The fixture body 2 further includes louvers 24.

[0013] Each of the two containment bodies 20 has a rectangular bottom wall (not shown) and a pair of side walls 202 that protrude downward from both the left and right ends along the longitudinal direction of the bottom wall.

[0014] The two connecting plates 21 are each formed in a rectangular plate shape. One connecting plate 21 constitutes the front wall of each of the two containers 20. The other connecting plate 21 constitutes the rear wall of each of the two containers 20. As a result, each container 20 is formed in a box shape having a rectangular opening in the front (lower surface) facing the bottom wall 201 in the vertical direction.

[0015] A space 23 is provided between the two containers 20. The space 23 is surrounded by one side wall 202 of each container 20 and the pair of connecting plates 21, and can accommodate equipment such as an air-conditioning outlet.

[0016] The louver 24 has a plurality of light-shielding plates 240 and a pair of support plates 241 that support these plurality of light-shielding plates 240 arranged at equal intervals. The louver 24 is detachably attached to the pair of side walls 202 of the container 20 so as to cover the opening of the container 20.

[0017] (3) Light source unit (3-1) Basic structure of the light source unit The two light source units 3 have the same structure. As shown in FIGS. 2 to 5, the light source unit 3 mainly includes a unit body 30, a light source module 31, and a translucent cover 32.

[0018] The unit body 30 (an example of a support member) is formed in a long L-shape (U-shaped in cross section) by a metal plate as shown in FIG. 5. The unit body 30 includes a bottom plate 300 formed in a long and rectangular plate shape and a pair of side plates 301 extending downward from both ends in the short side direction (front-rear direction) of the bottom plate 300. The pair of side plates are inclined in a direction away from each other (outward). The bottom plate 300 has a bottom surface 302 (see FIGS. 4 and 5) facing downward to support a substrate 310 (described later) and an upper surface 303 (see FIG. 2) on the opposite side of the bottom surface 302.

[0019] As shown in Figure 4, the light source module 31 is attached to the bottom surface 302 (an example of the first main surface) of the bottom plate 300 of the unit body 30. The light source module 31 has a long (specifically, rectangular) substrate 310 and a plurality of light-emitting elements 311.

[0020] The substrate 310 is an insulating substrate made of resin, such as a glass cloth-based epoxy resin substrate. The length of the substrate 310 in the longitudinal direction is slightly shorter than the length of the base plate 300. That is, as shown in Figure 4, both longitudinal edges of the substrate 310 extend to a position close to the longitudinal edges of both longitudinal edges of the base plate 300. As a result, the substrate 310 of the light source module 31 is longer in the longitudinal direction of the base plate 300 compared to conventional substrates. The length of the substrate 310 in the short direction is shorter than the length of the base plate 300. The substrate 310 is positioned in the middle of the short direction of the base plate 300. Therefore, the bottom surface 302 of the base plate 300 has exposed portions (areas without the substrate 310) on both sides of the short direction of the substrate 310.

[0021] The substrate 310 has multiple types of fixing structures for fixing to the base plate 300. As a first fixing structure, the substrate 310 has multiple holes 313 into which screws (not shown) can be fixed to the base plate 300, as shown in Figure 4. Specifically, the multiple holes 313 are provided at multiple locations on both longitudinal edges of the substrate 310. As a second fixing structure, the substrate 310 has multiple grooves 314 into which multiple hooks (not shown) cut out from the base plate 300 are inserted, as shown in Figure 4. Specifically, the multiple grooves 314 are provided at multiple locations on both longitudinal edges of the substrate 310.

[0022] Each of the multiple light-emitting elements 311 is, for example, a packaged white LED (Light Emitting Diode) for illumination. As shown in Figure 4, the multiple light-emitting elements 311 are mounted in a single row at equal intervals along the longitudinal direction (front-to-back direction) of the substrate 310, in the center of the width direction (left-to-right direction) on the placement surface 312 (an example of the first surface) of the substrate 310. As mentioned above, since the substrate 310 extends to the longitudinal end of the bottom plate 300, the light-emitting elements 311 can be positioned closer to the longitudinal edge of the bottom plate 300 than in conventional designs. As a result, the light-emitting part of the lighting fixture 1 (here, the multiple light-emitting elements 311 provided on the substrate 310 covered with a translucent cover 32) can emit light over a wider area, which improves the aesthetic design of the lighting fixture 1.

[0023] Multiple light-emitting elements 311 are electrically connected in series or in series-parallel by printed wiring (an example of a conductor, not shown) formed on the mounting surface 312 of the substrate 310. The printed wiring is covered by a protective layer (not shown).

[0024] As shown in Figure 3, the translucent cover 32 is attached to the bottom plate 300 of the unit body 30 at a position facing the bottom surface 302 of the bottom plate 300. The translucent cover 32 is made of a translucent material (for example, a translucent synthetic resin material such as acrylic resin and polycarbonate resin). The illumination light emitted by the light source module 31 passes through the translucent cover 32 and is irradiated into the illuminated space.

[0025] (3-2) Wiring connection structure of the light source unit As shown in Figures 4, 6, and 7, the light source unit 3 further includes a conductive wire connection structure 320. The conductive wire connection structure 320 includes a connector 321, a first conductive wire 323, and a second conductive wire 324. The conductive wire connection structure 320 is configured to electrically connect a power supply unit (not shown), which will be described later, to a plurality of light-emitting elements 311 through an opening 322 provided in the bottom plate 300.

[0026] The opening 322 penetrates from the upper surface 303 to the bottom surface 302 of the base plate 300 and is a structure for arranging a portion of the first conductive wire 323 and the second conductive wire 324. The opening 322 is formed on the bottom surface 302 of the base plate 300 in a region in the short-side direction of the substrate 310 and in a position that does not overlap with the substrate 310 (the aforementioned exposed portion). More specifically, the opening 322 is provided in a portion of the base plate 300 on the short-side outer side of the substrate 310 (a position adjacent to the substrate 310 along the short-side direction of the substrate 310). By setting the position of the opening 322 in this way, the substrate 310 can be extended to near the longitudinal edge of the base plate 300 as described above, and as a result, the light-emitting element 311 can be positioned closer to the longitudinal edge of the base plate 300 than in the conventional design.

[0027] Furthermore, the longitudinal position of the opening 322 on the bottom plate 300 is shifted outward in the longitudinal direction on the bottom plate 300 (towards one longitudinal edge of the bottom plate 300) compared to the longitudinal position of the connector 321 on the bottom plate 300.

[0028] (3-2-1) Connector The connector 321 (an example of a power supply connection) is provided on the mounting surface 312 of the circuit board 310 and is a component for supplying power to multiple light-emitting elements 311. As shown in Figure 4, the connector 321 is located in the region on one end of the circuit board 310 in the longitudinal direction (the lower left end in Figure 4). The connector 321 is electrically connected to a printed circuit board (not shown) connected to the light-emitting elements 311, and to a first conductive wire 323 and a second conductive wire 324. The connector 321 has two terminals; one terminal electrically connects the first conductive wire 323 to the positive terminal of the printed circuit board, and the other terminal electrically connects the second conductive wire 324 to the negative terminal of the printed circuit board. The first conductive wire 323 is electrically connected to the positive output terminal of a power supply unit (not shown), and the second conductive wire 324 is electrically connected to the negative output terminal of the power supply unit.

[0029] (3-2-2) Conductive wire The first conductive wire 323 and the second conductive wire 324 are inserted through the opening 322 in the bottom plate 300, with one end connected to the connector 321. More specifically, the first conductive wire 323 and the second conductive wire 324 are guided from the upper surface 303 (an example of the second main surface, see Figure 2) side of the bottom plate 300 through the opening 322 to the bottom surface 302 side and connected to the connector 321.

[0030] The first conductive wire 323 and the second conductive wire 324 are brought out to the upper surface 303 side of the bottom plate 300 (see Figure 3) and connected to a power supply unit (not shown). Power supplied from the LED lighting circuit inside the power supply unit is supplied to the light-emitting element 311 via the first conductive wire 323 and the second conductive wire 324 and the connector 321.

[0031] As shown in Figures 6 and 7, the first conductive wire 323 has a first portion 341, a second portion 342, and a third portion 343, starting from the connector 321 side. The first portion 341 extends outward in the longitudinal direction (towards one longitudinal edge of the substrate 310) parallel to the longitudinal direction of the substrate 310. The second portion 342 extends from the end of the first portion 341 in the short direction of the substrate 310 (away from the substrate 310). The third portion 343 extends outward in the longitudinal direction parallel to the longitudinal direction from the tip of the second portion 342 and extends into the opening 322. As described above, since the first portion 341 is electrically connected to the connector 321 along the longitudinal direction of the substrate 310 on the bottom surface 302 side of the bottom plate 300, the first portion 341 makes it easy to make the longitudinal positions of the connector 321 and the opening 322 different, increasing the degree of freedom in designing their placement positions.

[0032] As shown in Figures 6 and 7, the second conductive wire 324 has a first portion 345 and a second portion 346, extending from the connector 321 side. The first portion 345 extends in the short direction (away from the substrate 310). The second portion 346 extends from one end of the first portion 345 parallel to the longitudinal direction of the substrate 310, outward in the longitudinal direction, and into the opening 322. As described above, the first portion 345 is electrically connected to the connector 321 along the short direction of the substrate 310 on the bottom surface 302 side of the bottom plate 300. Therefore, the amount of the second conductive wire 324 overlapping the substrate 310 can be reduced.

[0033] (3-2-3) Regulating member The conductive wire connection structure 320 further includes a restricting member 325, as shown in Figures 6 and 7. The restricting member 325 is provided on the bottom surface 302 of the base plate 300 and restricts the movement of the first conductive wire 323 and the second conductive wire 324 between the opening 322 and the connector 321. Specifically, the restricting member 325 is a tape with adhesive applied to one side, and supports the third portion 343 of the first conductive wire 323 and the second portion 346 of the second conductive wire 324 so that they do not move away from the bottom surface 302 of the base plate 300. This stabilizes the position of the first conductive wire 323 and the second conductive wire 324 relative to the connector 321. Furthermore, the first conductive wire 323 and the second conductive wire 324 can be positioned closer to the connector 321, thereby reducing high-frequency noise and costs.

[0034] (3-2-4) Others As shown in Figure 6, on the mounting surface 312 of the substrate 310, an area 326 is provided around the connector 321 where there are no printed wirings connecting the multiple light-emitting elements 311. This ensures an appropriate insulation distance between the connector 321 and the printed wiring.

[0035] (modified version) (1) Modified light source module The substrate of the light source module is not limited to a rectangular shape; it may also be a square or other rectangular shape.

[0036] The substrate of the light source module may be constructed by connecting multiple substrates in the longitudinal direction.

[0037] The light-emitting element is not limited to LEDs; it may also be an organic electroluminescent element or a semiconductor laser element, etc.

[0038] The light-emitting elements may be arranged in two or more rows.

[0039] (2) Modified example of the power supply connection section In the above embodiment, only one connector 321 was provided on the substrate 310. However, the number of connectors is not particularly limited. As a modification, in addition to connector 321, a second connector (not shown) may be provided, for example, at a position symmetrical to connector 321. In this case, the worker can choose to connect the conductive wire to either connector 321 or the second connector. This increases the flexibility of wiring the conductive wire. Furthermore, to connect the conductive wire to the second connector, an opening in the bottom plate 300, which is provided in advance near the second connector, can be used.

[0040] The position of the connector on the circuit board is not limited.

[0041] The position of the opening in the bottom plate of the unit body is not limited in the longitudinal direction of the bottom plate, as long as it does not overlap with the circuit board in the short direction of the circuit board.

[0042] The relative positions of the connector and the opening are not particularly limited. The opening may be located in the same longitudinal position as the connector. The opening may also be located longitudinally inward from the connector (away from one longitudinal edge of the substrate).

[0043] The power supply connection point may not be a connector; for example, it may be a land to which a conductive wire is soldered.

[0044] The restricting element does not have to be tape; for example, a cable tie may also be used.

[0045] (Aspect) This specification discloses the following aspects:

[0046] The lighting fixture (1) according to the first embodiment comprises a light source module (31), a support member (30), and conductive wires (323, 324). The light source module (31) has a long substrate (310), a plurality of light-emitting elements (311) provided on a first surface (312) of the substrate (310), and a power supply connection part (321) provided on the first surface (312) of the substrate (310) for supplying power to the plurality of light-emitting elements (311). The support member (30) has a first main surface (302) that supports the substrate (310), a second main surface (303) opposite to the first main surface (302), and an opening (322) formed in a region in the short direction of the substrate (310) that does not overlap with the substrate (310). The conductive wires (323, 324) are inserted through the opening (322) of the support member (31), and one end is electrically connected to the power supply connection part (321).

[0047] According to this embodiment, the substrate (310) of the light source module (31) can be extended longer in the longitudinal direction of the support member (31) than in the conventional design, thereby allowing the light-emitting element (311) to be positioned closer to the longitudinal end of the support member (30) than in the conventional design. As a result, the design of the lighting fixture (1) is improved.

[0048] In the lighting fixture (1) according to the second embodiment, in the first embodiment, on the first surface (312) of the substrate (310), a region (326) is provided around the power supply connection portion (321) in which there are no conductors connecting the multiple light-emitting elements (311).

[0049] According to this embodiment, an appropriate insulation distance is ensured between the power supply connection (321) and the conductor.

[0050] The lighting fixture (1) according to the third embodiment includes a pair of conductive wires (323, 324), each electrically connected to a power supply connection (321), in the first or second embodiment. At least one conductive wire (323) is electrically connected to the power supply connection (321) along the longitudinal direction of the substrate (310) on the first main surface (302) side of the support member (30).

[0051] According to this embodiment, it becomes easy to make the longitudinal positions of the power supply connection part (321) and the opening (322) different, and the degree of design freedom for their arrangement is increased.

[0052] In the lighting fixture (1) according to the fourth embodiment, in any one of the first to third embodiments, at least one conductive wire (324) is electrically connected to a power supply connection part (321) along the short direction of the substrate (310) on the first main surface (302) side of the support member (31).

[0053] According to this embodiment, the amount of conductive wires (324) that overlap the substrate (310) can be reduced.

[0054] The lighting fixture (1) according to the fifth embodiment further comprises, in any one of the first to fourth embodiments, a restricting member (325) provided on the first main surface (302) of the support member (30) and between the opening (322) and the power supply connection part (321) for restricting the movement of conductive wires (323, 324).

[0055] According to this embodiment, the position of the conductive wires (323, 324) relative to the connector (321) is stabilized, thereby allowing the conductive wires (323, 324) to be positioned close to the connector (321).

[0056] The lighting fixture (1) according to the sixth embodiment further comprises a translucent cover (32) made of a translucent material and positioned opposite the first main surface (302) of the support member (30) in any one of the first to fifth embodiments.

[0057] According to this embodiment, the translucent cover (32) improves the aesthetic design of the lighting fixture (1). [Explanation of symbols]

[0058] 1: Lighting fixtures 2: Main body of the device 3: Light source unit 30: Unit body 31: Light source module 32: Translucent cover 300: Bottom plate 301: Side panel 302: Bottom 303:Top surface 310: Circuit board 311: Light-emitting element 312: Placement surface 320: Conductive wire connection structure 321: Connector 322: Opening 323: First conductive wire 324: Second conductive wire 325: Regulating member 326 :Area

Claims

1. A light source module having a long substrate, a plurality of light-emitting elements provided on the first surface of the substrate, and a power supply connection part provided on the first surface of the substrate for supplying power to the plurality of light-emitting elements, A support member having a first main surface that supports the substrate, a second main surface opposite to the first main surface, and an opening formed in a region in the short direction of the substrate that does not overlap with the substrate, A pair of conductive wires are inserted through the opening of the support member, with one end of each wire electrically connected to the power supply connection portion, Equipped with, The power supply connection section includes a single connector to which the pair of conductive wires are electrically connected. One of the pair of conductive wires is electrically connected to the connector along the longitudinal direction of the substrate on the first main surface side of the support member. The other conductive wire of the pair is electrically connected to the one connector along the short-side direction of the substrate on the first main surface side of the support member. Lighting fixtures.

2. On the first surface of the substrate, a region is provided around one connector in which there are no conductors connecting the multiple light-emitting elements. The lighting fixture according to claim 1.

3. The support member further comprises a restricting member provided on the first main surface of the support member, which restricts the movement of the conductive wire between the opening and the connector. A lighting fixture according to claim 1 or 2.

4. The one conductive wire is A first portion is electrically connected to the connector along the longitudinal direction of the substrate, and extends parallel to the longitudinal direction and outward in the longitudinal direction. A second portion extending in the shorter direction from the end of the first portion, A third portion extending from the end of the second portion parallel to the longitudinal direction and outward in the longitudinal direction, and extending into the opening. It has, The other conductive wire is, A first portion extending in the short direction is electrically connected to the connector along the short direction of the substrate, and A second portion extends from one end of the first portion parallel to the longitudinal direction and outward in the longitudinal direction, extending into the opening. It has, The restricting member restricts the movement of the third portion of one conductive wire and the second portion of the other conductive wire. The lighting fixture according to claim 3.

5. The one connector is located on one end of the substrate in the longitudinal direction, and the position where the opening is formed is shifted toward the edge of the one end in the longitudinal direction compared to the position where the connector is located. A lighting fixture according to claim 1 or 2.

6. The support member further comprises a translucent cover made of a translucent material and positioned opposite the first main surface of the support member. A lighting fixture according to claim 1 or 2.

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