Lighting device

Abstract

To provide a lighting device which enables improvement of heat radiation performance.SOLUTION: A lighting device 200 includes: a light source unit 70 which has a light source part 72 including light emitting elements 721 and is configured to emit light; a power source device 50 which generates electric power for causing the light emitting elements 721 to emit light; and a housing 30 supporting the light source unit 70. The housing 30 is an elongated member which is elongated in an X direction and has a first wall part at a + Z side, a second wall part protruding from a + Y side end of the first wall part to a -Z side; and a third wall part protruding from a -Y side end of the first wall part to the -Z side. The second wall part and the third wall part face each other in a Y direction. The power source device 50 is attached to a +Z side surface of the first wall part and disposed at an outer side of the housing 30. The light source part 72 is disposed at an inner side of the housing 30.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lighting system and a lighting fixture. [Background technology]

[0002] Patent Document 1 discloses a structure for mounting a large lighting fixture that uses a straight tube lamp to a ceiling. The mounting device for a ceiling recessed lighting fixture disclosed in Patent Document 1 includes a support that engages with an in-ceiling structure. The support faces a frame portion on the lower periphery of the fixture body in the vertical direction. The support, together with the frame portion, sandwiches the in-ceiling structure, thereby mounting the ceiling recessed lighting fixture to the ceiling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 2-36116 Summary of the Invention [Problem to be solved by the invention]

[0004] The challenge is to further improve the heat dissipation performance of lighting fixtures. [Means for solving the problem]

[0005] The lighting device disclosed in the present application comprises a light source unit having a light source section having a light-emitting element and emitting light, a power supply device generating power for causing the light-emitting element to emit light, and a housing supporting the light source unit, with the X direction, Y direction, and Z direction being perpendicular to each other, the housing is an elongated member that is long in the X direction and has a first wall portion on the +Z side, a second wall portion protruding from the +Y side end of the first wall portion to the -Z side, and a third wall portion protruding from the -Y side end of the first wall portion to the -Z side, the second wall portion and the third wall portion facing each other in the Y direction, the power supply device is attached to the +Z side surface of the first wall portion and is disposed outside the housing, and the light source section is disposed inside the housing. Effect of the Invention

[0006] According to the lighting fixture of the present disclosure, the heat dissipation performance is further improved. [Brief description of the drawings]

[0007] [Figure 1] 1 is a side view illustrating a lighting system according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of the first lighting fixture taken along line AA in FIG. 1 (first specification). [Diagram 3] FIG. 2 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. [Figure 4] 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; [Diagram 5] FIG. [Figure 6] 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; [Figure 7] FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. [Figure 8] 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; [Figure 9] FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. [Figure 10] 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; [Figure 11] FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. [Figure 12] 1 is a side view illustrating a portion of a lighting system according to an embodiment of the present invention. [Figure 13] FIG. 2 is another side view of a portion of a lighting system according to an embodiment of the present invention. [Figure 14] FIG. 11 is a side view showing a lighting system of a second specification. [Figure 15] 15 is a cross-sectional view of the first lighting fixture taken along line BB in FIG. 14. [Figure 16]FIG. 11 is a cross-sectional view of a lighting fixture of the third specification. [Figure 17] FIG. 4 is a flow diagram showing an example of a construction method for a lighting system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the lighting system and lighting fixture of the present invention will be described with reference to the drawings (FIGS. 1 to 17). However, the present invention is not limited to the following embodiment, and can be embodied in various forms without departing from the gist of the present invention. Note that where the explanation is repeated, it may be omitted as appropriate. Also, in the drawings, the same or corresponding parts are denoted by the same reference symbols, and explanations will not be repeated.

[0009] In this specification, in order to facilitate understanding of the invention, the description may refer to the X direction, Y direction, and Z direction which are perpendicular to each other. For example, the X direction and the Y direction are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. However, the X direction and the Y direction may be parallel to a direction other than the horizontal direction, and the Z direction may be parallel to a direction other than the vertical direction.

[0010] First, a first specification of the lighting system 100 will be described with reference to Figures 1 to 13. In this embodiment, the lighting system 100 can be changed between the first specification, the second specification, and the third specification.

[0011] The lighting system 100 is used in buildings requiring airtightness, such as detached houses or apartment buildings. The object (mounting object) to which the lighting system 100 is attached is a structure such as a ceiling, a wall (side wall) or a floor. More specifically, the lighting system 100 is embedded in a structure such as a ceiling, a wall (side wall) or a floor. In this embodiment, the lighting system 100 embedded in a ceiling C (see FIG. 2) that is parallel to the horizontal direction will be described. When the lighting system 100 is embedded in the ceiling C (see FIG. 2), the +Z side is the upper side and the -Z side is the lower side. Note that, although the ceiling C is parallel to the horizontal direction in this embodiment, the ceiling to which the lighting system 100 is attached may be an inclined ceiling.

[0012] Hereinafter, the lighting system 100 of this embodiment will be described with reference to Fig. 1. Fig. 1 is a side view showing the lighting system 100 of this embodiment. In detail, Fig. 1 shows the lighting system 100 of a first specification. As shown in Fig. 1, the lighting system 100 includes a first lighting fixture 200A, a second lighting fixture 200B, and a connecting member 10.

[0013] The first lighting fixture 200A and the second lighting fixture 200B emit light. The connecting member 10 connects the first lighting fixture 200A and the second lighting fixture 200B. Hereinafter, when there is no need to distinguish between the first lighting fixture 200A and the second lighting fixture 200B, the first lighting fixture 200A and the second lighting fixture 200B may be referred to as "lighting fixture 200."

[0014] 1, lighting fixture 200 includes housing 30, blocking member 40, power supply device 50, two terminal blocks 51, a plurality of main body mounting members 60, and light source unit 70. Hereinafter, when it is necessary to distinguish between housing 30 of first lighting fixture 200A and housing 30 of second lighting fixture 200B, housing 30 of first lighting fixture 200A may be referred to as "first housing 30A" and housing 30 of second lighting fixture 200B may be referred to as "second housing 30B."

[0015] 1, the connecting member 10 connects adjacent housings 30. In this embodiment, the connecting member 10 connects a first housing 30A and a second housing 30B. More specifically, the housings 30 are elongated members that are long in the X direction. The first housing 30A and the second housing 30B (adjacent housings 30) are connected along the X direction.

[0016] Specifically, the housing 30 has an end on the +X side and an end on the -X side. The connecting member 10 connects the end on the -X side of the first housing 30A (one of the housings 30 adjacent to each other) and the end on the +X side of the second housing 30B (the other of the housings 30 adjacent to each other).

[0017] More specifically, the housing 30 has a first end 30a and a second end 30b. The first end 30a is an end on one side in the longitudinal direction of the housing 30. The second end 30b is an end on the other side in the longitudinal direction of the housing 30. In the example shown in Fig. 1, the connecting member 10 connects the second end 30b of the first housing 30A and the first end 30a of the second housing 30B.

[0018] The housing 30 is attached to an object to which the lighting system 100 is attached. More specifically, the housing 30 is embedded in the object to which the lighting system 100 is attached. In this embodiment, the housing 30 is embedded in a ceiling C (see FIG. 2).

[0019] The housing 30 supports the blocking member 40, the power supply device 50, the two terminal blocks 51, the multiple body mounting members 60, and the light source unit 70. In other words, the blocking member 40, the power supply device 50, the two terminal blocks 51, the multiple body mounting members 60, and the light source unit 70 are attached to the housing 30. The housing 30 is, for example, an integrally molded product. The material of the housing 30 is, for example, a metal such as aluminum. The heat dissipation property of the lighting device 200 is improved by using a metal material for the housing 30.

[0020] The housing 30 has both ends open in the X direction. The blocking member 40 of the first lighting device 200A is attached to the end of the first housing 30A on the +X side and blocks the open end on the +X side of the first housing 30A. The blocking member 40 of the second lighting device 200B is attached to the end of the second housing 30B on the -X side and blocks the open end on the -X side of the second housing 30B. The blocking member 40 is made of the same material as the housing 30. However, the blocking member 40 may be made of a different material than the housing 30.

[0021] The first housing 30A and the second housing 30B are connected at an open end on the -X side of the first housing 30A and an open end on the +X side of the second housing 30B. The blocking member 40 of the first lighting device 200A is attached to one of both ends of the first housing 30A that is not connected to the second housing 30B. The blocking member 40 of the second lighting device 200B is attached to one of both ends of the second housing 30B that is not connected to the first housing 30A.

[0022] The housing 30 has, for example, a substantially rectangular parallelepiped shape extending along the X direction. The power supply unit 50 and the two terminal blocks 51 are attached to a wall on the +Z side of the housing 30 (one side in a direction perpendicular to the longitudinal direction of the housing 30). The power supply unit 50 generates power for generating light from the light-emitting element 721 (see FIG. 2) based on AC power supplied to one of the two terminal blocks 51. For example, the power supply unit 50 generates a DC current for generating light from the light-emitting element 721 (see FIG. 2).

[0023] One of the two terminal blocks 51 is disposed at a first end 30a of the housing 30, and the other of the two terminal blocks 51 is disposed at a second end 30b of the housing 30. In other words, one of the two terminal blocks 51 is disposed at an end on the +X side of the housing 30, and the other of the two terminal blocks 51 is disposed at an end on the -X side of the housing 30.

[0024] The light source unit 70 emits light. The light source unit 70 has a cover 71. The cover 71 is, for example, a shade or a diffusion cover. The housing 30 has an open surface on the -Z side (the other side in the direction perpendicular to the longitudinal direction of the housing 30). In the first specification, the cover 71 protrudes from the open surface on the -Z side of the housing 30.

[0025] As will be described with reference to Fig. 2, the plurality of body mounting members 60 mount the lighting fixture 200 to the ceiling C. Specifically, the plurality of body mounting members 60 mount the housing 30 to the ceiling C. The body mounting members 60 are, for example, mounting brackets. The body mounting members 60 may also be, for example, mounting springs.

[0026] Next, the lighting fixture 200 of the present embodiment will be described with reference to Fig. 2. Fig. 2 is a cross-sectional view of the first lighting fixture 200A taken along line AA in Fig. 1. In detail, Fig. 2 shows a cross-section of the first lighting fixture 200A embedded in an embedding hole CH in a ceiling C. The configuration of the lighting fixture 200 will be described below using the first lighting fixture 200A as an example.

[0027] 2, the housing 30 has a substantially U-shape in cross-sectional or side view. In more detail, the housing 30 has a substantially U-shape with sharp corners in cross-sectional or side view.

[0028] Specifically, the housing 30 has a first wall portion 31, a second wall portion 32, and a third wall portion 33. The first wall portion 31 is a +Z side wall portion. The second wall portion 32 is a +Y side wall portion. The third wall portion 33 is a -Y side wall portion. The second wall portion 32 protrudes in the -Z direction from the +Y side end portion of the first wall portion 31. The third wall portion 33 protrudes in the -Z direction from the -Y side end portion of the first wall portion 31. The second wall portion 32 and the third wall portion 33 face each other in the Y direction.

[0029] The housing 30 further has a first flange 34a and a second flange 34b. The first flange 34a and the second flange 34b protrude outward from the end of the housing 30 on the -Z side. Specifically, the first flange 34a protrudes outward (+Y side) from the end of the second wall 32 on the -Z side. The second flange 34b protrudes outward (-Y side) from the end of the third wall 33 on the -Z side.

[0030] As shown in FIG. 2, when the lighting fixture 200 is embedded in the embedding hole CH in the ceiling C, the first flange 34a and the second flange 34b are located on the -Z side (lower side) of the ceiling C, and the outer (+Y side) edge of the first flange 34a and the outer (-Y side) edge of the second flange 34b abut against the -Z side surface (lower surface) of the ceiling C.

[0031] As shown in FIG. 2, the power supply device 50 is attached to the first wall portion 31. More specifically, the power supply device 50 is attached to the outer surface (the surface on the +Z side) of the first wall portion 31. Therefore, the power supply device 50 is disposed outside the housing 30. The power supply device 50 is fixed to the housing 30 by a fastening member such as a screw. Note that the two terminal blocks 51 shown in FIG. 1 are also attached to the outer surface of the first wall portion 31, similar to the power supply device 50. The two terminal blocks 51 are each fixed to the housing 30 by a fastening member such as a screw.

[0032] 2, the multiple body mounting members 60 include a first body mounting member 60a and a second body mounting member 60b. The first body mounting member 60a is attached to the outer surface (the surface on the +Y side) of the second wall portion 32. The second body mounting member 60b is attached to the outer surface (the surface on the -Y side) of the third wall portion 33. The multiple body mounting members 60 are each fixed to the housing 30 by a fastening member such as a screw.

[0033] In this embodiment, each of the multiple main body mounting members 60 has elasticity. Due to the elasticity of the first main body mounting member 60a and the second main body mounting member 60b, the first main body mounting member 60a and the second main body mounting member 60b, together with the first flange portion 34a and the second flange portion 34b, respectively, sandwich the ceiling C. As a result, the lighting fixture 200 (housing 30) is attached to the ceiling C.

[0034] 2, the lighting system 100 further includes a sealing member 20. In this embodiment, the sealing member 20 includes a first sealing member 21. The first sealing member 21 is disposed on the +Z side surfaces of the first flange 34a and the second flange 34b, and seals the gap between the first flange 34a and the second flange 34b and the ceiling C. Therefore, the first sealing member 21 improves the airtightness of the space into which light is irradiated by the lighting system 100. As a result, it is possible to improve the airtightness and heat insulation performance of the building in which the lighting system 100 is installed.

[0035] The first sealing member 21 may have flexibility or elasticity, for example. When the first sealing member 21 has flexibility or elasticity, the first sealing member 21 can easily come into close contact with the first flange 34a, the second flange 34b, and the ceiling C. As a result, the gaps between the first flange 34a and the second flange 34b and the ceiling C can be more easily sealed. The first sealing member 21 is, for example, a packing. The first sealing member 21 may be, for example, a molded product of silicone rubber.

[0036] Next, the light source unit 70 will be described with reference to Fig. 2. As shown in Fig. 2, the light source unit 70 further includes a light source section 72 and a support member 73. The light source section 72 emits light. In detail, the light source section 72 includes a light emitting element 721 and a substrate 722.

[0037] The light-emitting element 721 emits light (emits light). The light-emitting element 721 is, for example, a light-emitting diode (LED). Alternatively, the light-emitting element 721 may be an organic EL (Electro-Luminescence) element or a laser diode. The light-emitting element 721 is disposed on a substrate 722. Specifically, the light-emitting element 721 is attached to a mounting surface of the substrate 722. That is, the light-emitting element 721 is mounted on the substrate 722.

[0038] The light source unit 72 may have, for example, a COB (Chip on Board) structure in which a plurality of light emitting elements 721 are mounted on a mounting surface of a substrate 722 and sealed with phosphor. Alternatively, the light source unit 72 may have an SMD (Surface Mount Device) structure in which a unit in which the light emitting elements 721 and phosphor are integrated is mounted on the mounting surface of the substrate 722 and electrically connected to a conductor of the substrate 722.

[0039] The support member 73 supports the light source unit 72. Specifically, the substrate 722 is attached to the support member 73. For example, the substrate 722 may be adhered to the support member 73 by an adhesive, or may be fixed to the support member 73 by a fastening member such as a screw. The support member 73 is a member made of a metal such as aluminum. When the support member 73 is made of a metal, the support member 73 functions as a heat sink for the light source unit 72.

[0040] The support member 73 supports the cover 71 such that the cover 71 covers the light source unit 72 from the -Z side. Specifically, the inside of the cover 71 is hollow. The support member 73 supports the cover 71 such that the inner surface of the cover 71 faces the light emitting surface of the light emitting element 721.

[0041] The cover 71 is transparent or translucent and passes light emitted from the light emitting element 721 (light emitted from the light emitting element 721). The cover 71 may, for example, diffuse the light, or may transmit the light without diffusing it. In order to reduce the glare felt by the user due to the light passing through the cover 71, it is preferable that the cover 71 is, for example, milky white or translucent and diffuses the light passing through the cover 71. In addition, in a specification (first specification) in which the cover 71 protrudes from a structure (attachment target) such as the ceiling C, the cover 71 diffuses the light, so that the attachment surface of the attachment target (for example, the ceiling surface of the ceiling C) can be illuminated by the light emitted from the side surface of the cover 71.

[0042] The cover 71 has a substantially rectangular prism shape. More specifically, the front, rear, both side and bottom surfaces of the cover 71 are flat. In this embodiment, the width of the bottom surface of the cover 71 is substantially equal to the height of the side surfaces. However, the shape and dimensions of the cover 71 are not particularly limited.

[0043] In a specification (first specification) in which the cover 71 protrudes from a structure (attachment target) such as a ceiling C, by forming the cover 71 into a substantially rectangular prism shape as in this embodiment, a sense of unity between the structure (e.g., the ceiling C) and the cover 71 can be created. This allows the lighting fixture 200 to be designed as if it were a part of the structure. In particular, when the lighting fixture 200 is turned off, the presence of the lighting fixture 200 can be prevented from being unnecessarily conspicuous.

[0044] Next, a structure for supporting the light source unit 70 will be described with reference to Fig. 2. As shown in Fig. 2, the lighting fixture 200 further includes a light source attachment member 80. Moreover, in the lighting system 100 of the first specification, the lighting fixture 200 further includes a first adjustment member 85a.

[0045] The light source attachment member 80 is fixed to the light source unit 70. In this embodiment, the light source attachment member 80 is fixed to the support member 73 by a fastening member B1 such as a screw. The light source attachment member 80 protrudes from the support member 73 in the +Z direction.

[0046] The inside of the housing 30 is hollow. The first adjustment member 85a is disposed inside the housing 30. Specifically, the first adjustment member 85a is fixed to the housing 30 by a fastening member such as a screw.

[0047] The first adjustment member 85a extends in the -Z direction from the first wall portion 31 of the housing 30. The first adjustment member 85a is detachable from the housing 30. The first adjustment member 85a is, for example, a metal member. The first adjustment member 85a is, for example, an integrally molded product. Specifically, the first adjustment member 85a may be produced by bending a metal sheet.

[0048] The light source mounting member 80 has elasticity. The elasticity of the light source mounting member 80 causes the light source mounting member 80 to engage with the first adjustment member 85a. As a result, the light source mounting member 80 is supported by the first adjustment member 85a. The light source mounting member 80 is, for example, a mounting bracket. The light source mounting member 80 may be, for example, a mounting spring. The light source mounting member 80 is detachable from the first adjustment member 85a. Therefore, the light source unit 70 is detachable from the housing 30.

[0049] More specifically, the first adjustment member 85a has a first wall portion 86a and a second wall portion 86b. The first wall portion 86a and the second wall portion 86b extend in the -Z direction. The first wall portion 86a is disposed on the second wall portion 32 side (+Y side) of the housing 30 and faces the second wall portion 32. The second wall portion 86b is disposed on the third wall portion 33 side (-Y side) of the housing 30 and faces the third wall portion 33.

[0050] The light source mounting member 80 has a first arm 81a and a second arm 81b. The first arm 81a and the second arm 81b extend in the +Z direction. The first arm 81a is disposed on the second wall 32 side (+Y side) of the housing 30 and faces the first wall 86a of the first adjustment member 85a. The second arm 81b is disposed on the third wall 33 side (-Y side) of the housing 30 and faces the second wall 86b of the first adjustment member 85a.

[0051] The first wall portion 86a of the first adjustment member 85a has a first engagement hole 87a. The second wall portion 86b of the first adjustment member 85a has a second engagement hole 87b. The first arm portion 81a has a first curved portion 82a. The first curved portion 82a is curved so as to protrude outward (to the +Y side). The second arm portion 81b has a second curved portion 82b. The second curved portion 82b is curved so as to protrude outward (to the -Y side).

[0052] Due to the elastic force of the light source mounting member 80, the first curved portion 82a of the light source mounting member 80 engages with the first engagement hole 87a of the first adjustment member 85a, and the second curved portion 82b of the light source mounting member 80 engages with the second engagement hole 87b of the first adjustment member 85a. As a result, the light source mounting member 80 is supported by the first adjustment member 85a, and the light source unit 70 is supported on the housing 30 via the light source mounting member 80 and the first adjustment member 85a.

[0053] The first adjustment member 85a adjusts the position of the light source unit 70 in the Z direction. More specifically, the first adjustment member 85a supports the light source unit 70 (light source attachment member 80) so that the cover 71 protrudes from the -Z side surface (lower surface) of the housing 30 and the light source section 72 is disposed inside the housing 30. Specifically, a first engagement hole 87a and a second engagement hole 87b are formed in a first wall section 86a and a second wall section 86b of the first adjustment member 85a, respectively, so that the light source unit 70 is held at a position where the cover 71 protrudes from the -Z side surface (lower surface) of the housing 30 and the light source section 72 is disposed inside the housing 30.

[0054] In this embodiment, the upper end 74 of the support member 73 abuts against the lower end 88 of the first adjustment member 85a. Therefore, the position of the light source unit 70 in the Z direction is regulated by the lower end 88 of the first adjustment member 85a. In other words, when the light source unit 70 is attached to the housing 30 (first adjustment member 85a), movement of the light source unit 70 in the +Z direction is regulated by the lower end 88 of the first adjustment member 85a.

[0055] In this embodiment, the housing 30 supports the power supply device 50 at a position away from the light emitting element 721. Specifically, the power supply device 50 is disposed on the outer surface of the first wall portion 31 of the housing 30. The light source unit 72 is disposed inside the housing 30 at a position away from the first wall portion 31 of the housing 30. Therefore, according to this embodiment, it is difficult for the heat generated from the power supply device 50 and the heat generated from the light source unit 72 to interfere with each other. Furthermore, the heat dissipation performance of the lighting device 200 is improved.

[0056] Furthermore, according to the present embodiment, the space in which the power supply device 50 is disposed and the space in which the light source unit 72 is disposed are separated by the housing 30. Therefore, the heat generated from the power supply device 50 and the heat generated from the light source unit 72 are less likely to interfere with each other. In addition, the heat dissipation performance of the lighting device 200 is further improved.

[0057] Furthermore, according to this embodiment, the power supply device 50 is disposed outside the housing 30. Therefore, the height of the housing 30 can be made lower than in a configuration in which the power supply device 50 is disposed inside the housing 30. As a result, the material of the housing 30 can be reduced.

[0058] Next, the lighting fixture 200 of the present embodiment will be described with reference to Fig. 3. Fig. 3 is an exploded perspective view of the lighting fixture 200 of the present embodiment. More specifically, Fig. 3 is an exploded perspective view of the first lighting fixture 200A. Below, the lighting fixture 200 will be described using the first lighting fixture 200A as an example.

[0059] As shown in FIG. 3, the housing 30 has a first open surface 14, a second open surface 15, and a third open surface 16. The first open surface 14 is the surface on the -Z side of the housing 30. The first open surface 14 faces the first wall portion 31 described with reference to FIG. 2. The surface on the -Z side of the housing 30 is open. The second open surface 15 is the end surface of the housing 30 on the first end portion 30a side. The third open surface 16 is the end surface of the housing 30 on the second end portion 30b side. Both ends of the housing 30 in the longitudinal direction are open.

[0060] 3, the lighting fixture 200 of this embodiment includes four main body mounting members 60. In detail, the lighting fixture 200 includes two first main body mounting members 60a and two second main body mounting members 60b.

[0061] One of the two first body mounting members 60a is attached to the first end 30a side of the housing 30. The other of the two first body mounting members 60a is attached to the second end 30b side of the housing 30. Similarly, one of the two second body mounting members 60b is attached to the first end 30a side of the housing 30. The other of the two second body mounting members 60b is attached to the second end 30b side of the housing 30.

[0062] 3, the cover 71, the substrate 722, and the support member 73 extend in the X direction. The light source unit 72 has a plurality of light-emitting elements 721. The substrate 722 is provided with wiring for supplying power to the plurality of light-emitting elements 721. The plurality of light-emitting elements 721 are arranged in a single row along the X direction. However, the arrangement of the plurality of light-emitting elements 721 is not limited to a single row. The plurality of light-emitting elements 721 may be arranged in two or more rows along the X direction, or may be arranged in a staggered pattern.

[0063] 3, the lighting fixture 200 of this embodiment includes three first adjustment members 85a and three light source mounting members 80. The three first adjustment members 85a and the three light source mounting members 80 are arranged along the X direction.

[0064] Specifically, one of the three first adjustment members 85a is attached to the first end 30a side of the housing 30. The other of the three first adjustment members 85a is attached to the second end 30b side of the housing 30. The remaining one of the three first adjustment members 85a is attached to the center of the housing 30 in the X direction. The three light source mounting members 80 are disposed at positions where they can engage with the three first adjustment members 85a, respectively.

[0065] Next, the lighting system 100 of this embodiment will be described with reference to Figs. 4 to 7. Fig. 4 is a perspective view showing a part of the lighting system 100 of this embodiment. However, for convenience of explanation, the connecting member 10 is omitted in Fig. 4. As shown in Fig. 4, a gap G may occur between the first housing 30A and the second housing 30B. The gap G may reduce the airtightness of the space into which light is irradiated by the lighting system 100.

[0066] FIG. 5 is a perspective view of the connecting member 10. As shown in FIG. 5, the connecting member 10 has a first wall portion 11, a second wall portion 12, and a third wall portion 13. The first wall portion 11 is a wall portion on the +Z side. The second wall portion 12 is a wall portion on the +Y side. The third wall portion 13 is a wall portion on the -Y side. The second wall portion 12 extends in the -Z direction from an end portion on the +Y side of the first wall portion 11. The third wall portion 13 extends in the -Z direction from an end portion on the -Y side of the first wall portion 11. The second wall portion 12 and the third wall portion 13 face each other in the Y direction. The connecting member 10 is, for example, a member made of metal. The connecting member 10 is, for example, an integrally molded product. Specifically, the connecting member 10 may be produced by bending a metal plate.

[0067] As shown in FIG. 5, the sealing member 20 includes a second sealing member 22. In other words, the lighting system 100 further includes the second sealing member 22. The second sealing member 22 is disposed inside the connecting member 10. Specifically, the second sealing member 22 is provided on the inner surface of the first wall portion 11, the inner surface of the second wall portion 12, and the inner surface of the third wall portion 13. More specifically, the second sealing member 22 is provided continuously from the end of the second wall portion 12 on the -Z side to the end of the third wall portion 13 on the +Z side. The second sealing member 22 may be adhered to the inner surface of the connecting member 10 by, for example, double-sided tape or adhesive.

[0068] Fig. 6 is a perspective view showing a part of the lighting system 100 of this embodiment. Fig. 7 is another perspective view showing a part of the lighting system 100 of this embodiment. As shown in Figs. 4, 6 and 7, the connecting member 10 is disposed outside the first housing 30A and the second housing 30B so as to face the gap G. The connecting member 10 is fixed to the first housing 30A and the second housing 30B by a fastening member B2 such as a screw.

[0069] As shown in Fig. 6, the first wall portion 11 of the connecting member 10 faces the first wall portion 31 of the first housing 30A and the second housing 30B, and the second wall portion 12 of the connecting member 10 faces the second wall portion 32 of the first housing 30A and the second housing 30B. As shown in Fig. 7, the third wall portion 13 of the connecting member 10 faces the third wall portion 33 of the first housing 30A and the second housing 30B. The second sealing member 22 described with reference to Fig. 5 faces the gap G shown in Fig. 4 and seals the gap G.

[0070] In detail, the second sealing member 22 provided on the inner surface of the first wall portion 11 of the connecting member 10 faces the first wall portion 31 of the first housing 30A, the first wall portion 31 of the second housing 30B, and the gap G between the first wall portion 31 of the first housing 30A and the first wall portion 31 of the second housing 30B. In addition, the second sealing member 22 provided on the inner surface of the second wall portion 12 of the connecting member 10 faces the second wall portion 32 of the first housing 30A, the second wall portion 32 of the second housing 30B, and a part of the +Z side of the gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B. The second sealing member 22 provided on the inner surface of the third wall portion 13 of the connecting member 10 faces the third wall portion 33 of the first housing 30A, the third wall portion 33 of the second housing 30B, and a portion of the +Z side of the gap G between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B.

[0071] According to the present embodiment, the second sealing member 22 seals the gap G from the outside of the first housing 30A and the second housing 30B. Therefore, the second sealing member 22 improves the airtightness of the space into which light is irradiated by the lighting system 100. As a result, the thermal insulation performance of the building in which the lighting system 100 is installed can be improved.

[0072] The second sealing member 22 may have flexibility or elasticity, similar to the first sealing member 21. When the second sealing member 22 has flexibility or elasticity, the second sealing member 22 can easily come into close contact with the housing 30. As a result, the gap G can be more easily sealed. The second sealing member 22 is, for example, a packing, similar to the first sealing member 21. The second sealing member 22 may be, for example, a molded product made of silicone rubber.

[0073] Next, the lighting system 100 of this embodiment will be described with reference to Fig. 8 and Fig. 9. Fig. 8 is a perspective view showing a part of the lighting system 100 of this embodiment. Fig. 9 is another perspective view showing a part of the lighting system 100 of this embodiment. However, for convenience of explanation, the light source unit 70, the light source mounting member 80, and the first adjustment member 85a are omitted in Fig. 8 and Fig. 9.

[0074] 8, the sealing member 20 further includes a third sealing member 23. In other words, the lighting system 100 further includes the third sealing member 23. The third sealing member 23 seals the gap G from the insides of the first housing 30A and the second housing 30B.

[0075] In detail, the third sealing member 23 is positioned on the inner surfaces of the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B so as to cover a portion of the -Z side of the gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B.

[0076] 9, the sealing member 20 further includes a fourth sealing member 24. In other words, the lighting system 100 further includes the fourth sealing member 24. The fourth sealing member 24 seals the gap G from the insides of the first housing 30A and the second housing 30B.

[0077] In detail, the fourth sealing member 24 is positioned on the inner surfaces of the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B so as to cover a portion of the -Z side of the gap G between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B.

[0078] According to the present embodiment, the third sealing member 23 and the fourth sealing member 24 seal the gap G from the inside of the first housing 30A and the second housing 30B. Therefore, the third sealing member 23 and the fourth sealing member 24 improve the airtightness of the space into which light is irradiated by the lighting system 100. As a result, the thermal insulation performance of the building in which the lighting system 100 is installed can be improved.

[0079] The third sealing member 23 and the fourth sealing member 24 are, for example, a seal member (tape member) having an adhesive layer on one side. Alternatively, the third sealing member 23 and the fourth sealing member 24 may be adhered to the inner side of the first housing 30A and the second housing 30B by double-sided tape or adhesive. By adhering the third sealing member 23 and the fourth sealing member 24 to the inner side of the first housing 30A and the second housing 30B, the third sealing member 23 and the fourth sealing member 24 are easily adhered to the first housing 30A and the second housing 30B.

[0080] Next, the lighting fixture 200 of the present embodiment will be described with reference to Fig. 10. Fig. 10 is a perspective view showing a part of the lighting system 100 of the present embodiment. In the following, the lighting fixture 200 will be described using the first lighting fixture 200A as an example.

[0081] 10, the blocking member 40 is fixed to the housing 30 by a fastening member B3 such as a screw. Specifically, the blocking member 40 has a blocking portion 41 and a flange portion 42, and the blocking member 40 is fixed to the housing 30 by the fastening member B3.

[0082] The blocking portion 41 of the first lighting fixture 200A blocks the open end on the +X side of the first housing 30A. The blocking portion 41 of the second lighting fixture 200B blocks the open end on the -X side of the second housing 30B. More specifically, the blocking portion 41 is in close contact with the housing 30. This can improve the airtightness of the space into which the light is irradiated by the lighting system 100. As a result, the airtightness and heat insulation performance of the building in which the lighting system 100 is installed can be improved. An elastic member such as silicone rubber may be disposed between the blocking portion 41 and the housing 30. By sandwiching the elastic member between the blocking portion 41 and the housing 30, the airtightness of the space into which the light is irradiated by the lighting system 100 can be further improved.

[0083] The flange 42 of the blocking member 40 protrudes outward from the end of the blocking member 41 on the -Z side. The flange 42 of the blocking member 40 is connected to the first flange 34a and the second flange 34b of the housing 30. The first sealing member 21 described with reference to FIG. 2 is also disposed on the +Z side surface of the flange 42 of the blocking member 40, and seals the gap between the flange 42 and the ceiling C (see FIG. 2). Therefore, the first sealing member 21 improves the airtightness of the space into which the light is irradiated by the lighting system 100. As a result, the thermal insulation performance of the building in which the lighting system 100 is installed can be improved.

[0084] Next, the terminal block 51 will be described with reference to Fig. 10 and Fig. 11. Fig. 11 is another perspective view showing a part of the lighting system 100 of the present embodiment. In the following description, when it is necessary to distinguish between the two terminal blocks 51, the terminal block 51 on the +X side of the two terminal blocks 51 may be described as the "first terminal block 51a" and the terminal block 51 on the -X side may be described as the "second terminal block 51b."

[0085] As shown in Figs. 10 and 11, the terminal block 51 has a connection portion 500. An external power line F1 (see Fig. 12) or a feeder wiring F2 (see Fig. 13) is connected to the connection portion 500. In this embodiment, the connection portion 500 includes a first connection portion 501 and a second connection portion 502. The external power line F1 (see Fig. 12) is connected to the first connection portion 501 or the second connection portion 502. Similarly, the feeder wiring F2 (see Fig. 13) is connected to the first connection portion 501 or the second connection portion 502.

[0086] Next, an example of the layout of wiring for supplying power to lighting fixture 200 will be described with reference to Fig. 12 and Fig. 13. Fig. 12 is a side view showing a part of lighting system 100 of the present embodiment. Fig. 13 is another side view showing a part of lighting system 100 of the present embodiment.

[0087] In the lighting system 100, an external power line F1 is connected to one of the lighting fixtures 200, and AC power is supplied to the remaining lighting fixtures 200 via a feeder wiring F2. For example, as shown in FIG. 12, the external power line F1 is connected to a connection portion 500 of a first terminal block 51a of a first lighting fixture 200A. The external power line F1 transmits AC power supplied from a commercial power source. The power supply device 50 of the first lighting fixture 200A generates power for generating light from a light-emitting element 721 (see FIG. 2) based on the AC power supplied to the first terminal block 51a via the external power line F1.

[0088] 13, one end of the outgoing wiring F2 is connected to connection portion 500 of second terminal block 51b of first lighting fixture 200A, and the other end of the outgoing wiring F2 is connected to connection portion 500 of first terminal block 51a of second lighting fixture 200B. The outgoing wiring F2 transmits AC power from the second terminal block 51b of first lighting fixture 200A to the first terminal block 51a of second lighting fixture 200B.

[0089] More specifically, a portion of the AC power supplied to first terminal block 51a of first lighting fixture 200A is transmitted to second terminal block 51b of first lighting fixture 200A via wiring provided on substrate 722 (see FIG. 3) of first lighting fixture 200A. As a result, AC power is transmitted from second terminal block 51b of first lighting fixture 200A to first terminal block 51a of second lighting fixture 200B via feed wiring F2.

[0090] Power supply device 50 of second lighting fixture 200B generates power for causing light emitting element 721 (see FIG. 2) to emit light, based on power supplied to first terminal block 51a via feed wiring F2.

[0091] An external power line F1 may be connected to the second terminal block 51b of the second lighting fixture 200B. In this case, the power supply device 50 of the second lighting fixture 200B generates power for causing the light-emitting element 721 (see FIG. 2) to emit light based on AC power supplied from the external power line F1 to the second terminal block 51b of the second lighting fixture 200B. In this case, AC power is supplied from the first terminal block 51a of the second lighting fixture 200B to the second terminal block 51b of the first lighting fixture 200A via the outgoing wiring F2. The power supply device 50 of the first lighting fixture 200A generates power for causing the light-emitting element 721 (see FIG. 2) to emit light based on the AC power supplied to the second terminal block 51b via the outgoing wiring F2.

[0092] Next, the second specification lighting system 100 will be described with reference to Fig. 14 and Fig. 15. Fig. 14 is a side view showing the second specification lighting system 100. As shown in Fig. 14, in the second specification, the cover 71 does not protrude from the open surface on the -Z side of the housing 30.

[0093] Fig. 15 is a cross-sectional view of first luminaire 200A taken along line BB in Fig. 14. In detail, Fig. 15 shows a cross-section of first luminaire 200A embedded in embedding hole CH in ceiling C. The configuration of luminaire 200 will be described below using first luminaire 200A as an example.

[0094] 15, in the second specification, the cover 71 is disposed inside the housing 30. In addition, in the second specification, the first adjustment member 85a described with reference to FIG. 2 is not used, and the light source attachment member 80 directly engages with the housing 30.

[0095] Specifically, the second wall 32 and the third wall 33 of the housing 30 have protrusions 37 that protrude inward. Specifically, the protrusion 37 of the second wall 32 protrudes from the second wall 32 to the -Y side. The protrusion 37 of the third wall 33 protrudes from the third wall 33 to the +Y side.

[0096] In the second specification, the first curved portion 82a and the second curved portion 82b of the light source mounting member 80 engage with the protrusions 37 of the second wall portion 32 and the third wall portion 33 of the housing 30, respectively, due to the elastic force of the light source mounting member 80. As a result, the light source mounting member 80 is supported by the housing 30, and the light source unit 70 is supported on the housing 30 via the light source mounting member 80.

[0097] Specifically, the protrusions 37 are formed on the second wall 32 and the third wall 33 of the housing 30 so that the light source unit 70 is held at a position where the cover 71 is disposed inside the housing 30.

[0098] In this embodiment, a step portion 35 is provided on the inner surfaces of the second wall portion 32 and the third wall portion 33 of the housing 30, and an upper end 71a of the cover 71 abuts against the step portion 35 of the housing 30. Therefore, the position of the light source unit 70 in the Z direction is regulated by the step portion 35 of the housing 30. In other words, when the light source unit 70 is attached to the housing 30, movement of the light source unit 70 in the +Z direction is regulated by the step portion 35 of the housing 30.

[0099] 14 and 15, in the second specification, cover 71 is disposed inside housing 30. Therefore, lighting system 100 and lighting device 200 in the second specification can reduce glare compared to the first specification.

[0100] Next, a third specification of the lighting system 100 will be described with reference to Fig. 14 and Fig. 16. In the third specification, similar to the second specification, the cover 71 does not protrude from the open surface on the -Z side of the housing 30. Therefore, the appearance of the lighting system 100 is substantially the same as the lighting system 100 of the second specification shown in Fig. 14.

[0101] Fig. 16 is a cross-sectional view of lighting fixture 200 of the third specification. In detail, Fig. 16 shows a cross-section of first lighting fixture 200A taken along line BB in Fig. 14. The configuration of lighting fixture 200 will be described below using first lighting fixture 200A as an example.

[0102] 16, in the third specification, like the second specification, cover 71 is disposed inside housing 30. However, unlike the second specification, in the third specification, lighting device 200 includes second adjustment member 85b.

[0103] The second adjustment member 85b has a first wall portion 86a and a second wall portion 86b each having a shorter length in the Z direction than the first adjustment member 85a. Also, the first engagement hole 87a and the second engagement hole 87b are located on the +Z side (the first wall portion 31 side of the housing 30) of the first adjustment member 85a and on the -Z side of the protrusion 37 (see FIG. 15) of the housing 30. In other words, the first engagement hole 87a and the second engagement hole 87b of the second adjustment member 85b are located between the protrusion 37 (see FIG. 15) of the housing 30 and the first engagement hole 87a and the second engagement hole 87b of the first adjustment member 85a.

[0104] Therefore, according to this embodiment, the position where the light source unit 70 is held can be changed depending on the presence or absence of the second adjustment member 85b, and the structure for cutting glare can be changed. Therefore, the structure for cutting glare can be changed according to the viewing environment. Therefore, the structure for cutting glare can be changed to a structure suitable for the viewing environment.

[0105] Furthermore, according to the present embodiment, the specifications of lighting system 100 and lighting fixture 200 can be changed depending on the presence or absence of first adjustment member 85a and second adjustment member 85b. Therefore, the designs of the first to third specifications are standardized, improving productivity.

[0106] Next, an example of a construction method for mounting the lighting system 100 on the ceiling C will be described with reference to Fig. 17. Fig. 17 is a flow diagram showing an example of a construction method for the lighting system 100 of the present embodiment. The construction method shown in Fig. 17 includes a first step to a tenth step (step S1 to step S10).

[0107] In a first step, the worker attaches the connecting member 10 to the housing 30 (first housing 30A) of the first lighting device 200A from which the light source unit 70 has been removed (step S1). Specifically, the worker fastens the connecting member 10 to the first housing 30A with screws.

[0108] In a second step, the worker connects the external power line F1 to the first terminal block 51a of the first lighting fixture 200A (step S2).

[0109] In a third step, the worker connects one end of the feeder wiring F2 to the second terminal block 51b of the first lighting fixture 200A (step S3).

[0110] In a fourth step, the worker attaches the first housing 30A to the ceiling C (step S4).

[0111] In a fifth step, the worker connects the other end of the feed wiring F2 to the first terminal block 51a of the second lighting fixture 200B from which the light source unit 70 has been removed (step S5).

[0112] In a sixth step, the worker attaches the second housing 30B to the ceiling C (step S6).

[0113] In a seventh step, the worker attaches the connecting member 10 attached to the first housing 30A to the second housing 30B (step S7). Specifically, the worker screws the connecting member 10 into the second housing 30B from the inside, and fastens the connecting member 10 to the second housing 30B with the screws.

[0114] In an eighth step, the worker attaches the third sealing member 23 and the fourth sealing member 24 to the inner surfaces of the first housing 30A and the second housing 30B so as to straddle the first housing 30A and the second housing 30B (step S8). In more detail, the worker attaches the third sealing member 23 and the fourth sealing member 24 so as to seal at least the gaps not sealed by the second sealing member 22.

[0115] In a ninth step, the worker attaches light source unit 70 of first lighting fixture 200A to first housing 30A (step S9). Note that a temporary hanging cord may be attached to light source unit 70 before attaching light source unit 70 to first housing 30A (step S9).

[0116] In a tenth step, the worker attaches light source unit 70 of second lighting device 200B to second housing 30B (step S10). Note that a temporary hanging cord may be attached to light source unit 70 before attaching light source unit 70 to second housing 30B.

[0117] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 17). However, the present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the gist of the present invention. In addition, the components disclosed in the above embodiments can be modified as appropriate. For example, a certain component among all the components shown in one embodiment may be added to a component of another embodiment, or some of all the components shown in one embodiment may be deleted from the embodiment.

[0118] The drawings are mainly schematic illustrations of each component to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention.

[0119] For example, in the embodiment described with reference to FIG. 1 to FIG. 17, the second end 30b of the first housing 30A and the first end 30a of the second housing 30B are connected, but the second end 30b of the first housing 30A and the second end 30b of the second housing 30B may be connected. In other words, the second end 30b of the second housing 30B may be disposed on the +X side, and the first end 30a of the second housing 30B may be disposed on the -X side. Alternatively, the first end 30a of the first housing 30A and the second end 30b of the second housing 30B may be connected, or the first end 30a of the first housing 30A and the first end 30a of the second housing 30B may be connected. In other words, the second end 30b of the first housing 30A may be disposed on the +X side, and the first end 30a of the first housing 30A may be disposed on the -X side.

[0120] Furthermore, in the embodiment described with reference to Figs. 1 to 17, the lighting system 100 includes two lighting fixtures 200, but the lighting system 100 may include three or more lighting fixtures 200. That is, three or more lighting fixtures 200 may be connected along the X direction. When three or more lighting fixtures 200 are connected, both ends of the housing 30 of an intermediate lighting fixture 200 disposed between the lighting fixture 200 on the +X side and the lighting fixture 200 on the -X side are open. That is, the intermediate lighting fixture 200 does not include a blocking member 40.

[0121] 1 to 17, lighting fixture 200 includes two terminal blocks 51, but the number of terminal blocks 51 may be one. In this case, for example, an external power line F1 is connected to one of first connection portion 501 and second connection portion 502 of terminal block 51 of first lighting fixture 200A, and one end of outgoing wiring F2 is connected to the other of first connection portion 501 and second connection portion 502. The other end of outgoing wiring F2 is connected to one of first connection portion 501 and second connection portion 502 of terminal block 51 of second lighting fixture 200B.

[0122] 1 to 17, the power supply device 50 is disposed outside the housing 30, but the power supply device 50 may be disposed inside the housing 30. The housing 30 only needs to be able to support the power supply device 50 and the light source unit 70 at a position where thermal interference between the heat generated from the power supply device 50 and the heat generated from the light source section 72 does not occur or is unlikely to occur.

[0123] In the embodiment described with reference to Figs. 1 to 17, the lighting device 200 includes three light source mounting members 80, but the number of light source mounting members 80 is not limited to three. The lighting device 200 may include at least two light source mounting members 80. For example, one of the at least two light source mounting members 80 is disposed at an end of the support member 73 on the +X side, and the other of the at least two light source mounting members 80 is disposed at an end of the support member 73 on the -X side. The number of light source mounting members 80 may be adjusted according to, for example, the length of the lighting device 200 (housing 30).

[0124] In the embodiment described with reference to Figs. 1 to 17, the second sealing member 22 seals a portion of the gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B on the +Z side, but the second sealing member 22 may seal substantially the entire gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B. Here, substantially the entire portion refers to the entire gap G on the +Z side of the first flange portion 34a. In this case, the second wall portion 12 of the connecting member 10 may extend in the -Z direction from the first wall portion 11 so as to face the entire gap G on the +Z side of the first flange portion 34a.

[0125] Similarly, in the embodiment described with reference to Figs. 1 to 17, the second sealing member 22 seals a part of the gap G on the +Z side between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B, but the second sealing member 22 may seal substantially the entire gap G between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B. Here, substantially the entire portion refers to the entire portion of the gap G on the +Z side of the second flange portion 34b. In this case, the third wall portion 13 of the connecting member 10 may extend in the -Z direction from the first wall portion 11 so as to face the entire portion of the gap G on the +Z side of the second flange portion 34b.

[0126] Furthermore, in the embodiment described with reference to Figures 1 to 17, the third sealing member 23 covers a portion of the gap G on the -Z side between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B, but the third sealing member 23 may cover the entire portion of the gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B.

[0127] Similarly, in the embodiment described with reference to Figures 1 to 17, the fourth sealing member 24 covers a portion of the gap G on the -Z side between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B, but the fourth sealing member 24 may cover the entire portion of the gap G between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B.

[0128] 1 to 17, the sealing member 20 includes the first sealing member 21 to the fourth sealing member 24, but the sealing member 20 may further include a fifth sealing member. The fifth sealing member is disposed on the inner side surfaces of the first wall portion 31 of the first housing 30A and the first wall portion 31 of the second housing 30B so as to cover the gap G between the first wall portion 31 of the first housing 30A and the first wall portion 31 of the second housing 30B from the inside of the first housing 30A and the second housing 30B.

[0129] 1 to 17, the connecting member 10 is disposed outside the housing 30, but the connecting member 10 may be disposed inside the housing 30. In this case, the connecting member 10 connects the first housing 30A and the second housing 30B from the insides of the first housing 30A and the second housing 30B.

[0130] Furthermore, in the embodiment described with reference to Figures 1 to 17, the second sealing member 22 to the fourth sealing member 24 cover the gap G, but the second sealing member 22 to the fourth sealing member 24 may also be disposed in the gap G and sandwiched between the first housing 30A and the second housing 30B.

[0131] [Appendix 1] In the mounting device of Patent Document 1, when lighting fixtures are used in a linked manner, there is a possibility that gaps may occur between adjacent lighting fixtures, which may reduce the airtightness of the space into which the lighting fixtures irradiate light.

[0132] The following disclosure has been made in consideration of the above-mentioned problems, and has an object to provide a lighting system and a lighting fixture in which the airtightness of the space where light is irradiated is not easily reduced.

[0133] The lighting system disclosed in the present application comprises a first lighting device, a second lighting device, and a sealing member. The first lighting device comprises a first light source unit and a first housing. The first light source unit emits light. The first housing supports the first light source unit. The second lighting device comprises a second light source unit and a second housing. The second light source unit emits light. The second housing supports the second light source unit. The first housing and the second housing are connected. The sealing member seals a gap between the first housing and the second housing.

[0134] In the lighting system disclosed in the present application, the sealing member may include a first sealing member that seals the gap from outside the first housing and the second housing.

[0135] The lighting system disclosed in the present application may further include a connecting member that connects the first housing and the second housing. The connecting member is disposed outside the first housing and the second housing. The first sealing member is disposed inside the connecting member.

[0136] In the lighting system disclosed in the present application, the sealing member may include a second sealing member that seals the gap from inside the first housing and the second housing.

[0137] In the lighting system disclosed in the present application, the first housing and the second housing may be embedded in an object to which the first housing and the second housing are attached.

[0138] The present application discloses a lighting device for use in the lighting system. The lighting device includes a light source unit and a housing. The light source unit emits light. The housing supports the light source unit.

[0139] In the lighting device disclosed in the present application, the light source unit may have a light emitting element that emits light. The lighting device may further include a power supply device that generates power for causing the light emitting element to emit light. The housing may support the power supply device at a position separated from the light emitting element.

[0140] The lighting device disclosed in the present application may further include an adjustment member that adjusts a position of the light source unit. The housing may support the light source unit via the adjustment member.

[0141] [Appendix 2] A first aspect of the present disclosure is an illumination system including a first lighting fixture, a second lighting fixture, a sealing member, and a connecting member, wherein the first lighting fixture includes a first light source unit that emits light and a first housing that supports the first light source unit, and the second lighting fixture includes a second light source unit that emits light and a second housing that supports the second light source unit, each of the first housing and the second housing being an elongated member, and each of the first housing and the second housing being a light source unit that is disposed along a longitudinal direction of the first light source unit or the second light source unit. the first housing and the second housing adjacent to each other along the longitudinal direction are connected at their respective longitudinal ends by the connecting member arranged on the outside of the first housing and the second housing, the sealing member seals the gap between the first housing and the second housing, and the sealing member includes a first sealing member arranged inside the connecting member to seal the gaps between the first wall portions, between the second wall portions, and between the third wall portions from the outside of the first housing and the second housing.

[0142] A second aspect of the present disclosure is the lighting system of the first aspect, wherein the sealing member includes a second sealing member that seals the gap from inside the first housing and the second housing.

[0143] A third aspect of the present disclosure is the lighting system of the first or second aspect, wherein the first and second housings are embedded in an object to which the first and second housings are attached.

[0144] A fourth aspect of the present disclosure is a lighting device for use in the lighting system of any one of the first to third aspects, the lighting device including a light source unit that emits light and a housing that supports the light source unit.

[0145] A fifth aspect of the present disclosure is an aspect in which the light source unit has a light-emitting element that emits light, the lighting fixture further includes a power supply device that generates power for causing the light-emitting element to emit light, and the housing supports the power supply device at a position away from the light-emitting element. 4 It is a lighting fixture in.

[0146] A sixth aspect of the present disclosure further includes an adjustment member for adjusting a position of the light source unit, and the housing supports the light source unit via the adjustment member. 4 Or aspect 5 It is a lighting fixture in. [Industrial Applicability]

[0147] The present invention is useful in the field of lighting, and in particular in lighting installed in residential buildings such as detached houses or apartment buildings. [Explanation of symbols]

[0148] 10: Connecting member 22:Second sealing member 23:Third sealing member 24:Fourth sealing member 30: Housing 30A: First housing 30B: Second housing 50: Power supply 70: Light source unit 72: Light source section 80: Light source mounting member 85a: First adjustment member 85b: Second adjustment member 100: Lighting system 200: Lighting equipment 200A: First lighting fixture 200B: 2nd lighting fixture 721: Light emitting element G: Gap

Claims

1. a light source unit having a light source section having a light emitting element and emitting light; a power supply device that generates power for causing the light emitting element to emit light; a housing for supporting the light source unit; The X direction, the Y direction, and the Z direction are perpendicular to each other, the housing is an elongated member that is long in the X direction, and has a first wall portion on the +Z side, a second wall portion that protrudes from an end portion on the +Y side of the first wall portion to the -Z side, and a third wall portion that protrudes from an end portion on the -Y side of the first wall portion to the -Z side, The second wall portion and the third wall portion face each other in the Y direction, the power supply device is attached to a +Z side surface of the first wall portion and disposed outside the housing; The light source unit is disposed inside the housing.

2. The light source unit includes: A support member that supports the light source unit; A cover that transmits light emitted from the light-emitting element, The lighting device according to claim 1 , wherein the support member supports the cover such that the cover covers the light source unit from a −Z side.

3. Further, an adjustment member for adjusting the position of the light source unit in the Z direction is provided, The lighting device according to claim 1 , wherein the housing supports the light source unit via the adjustment member.

4. The lighting device according to claim 1 , wherein the housing is configured to be embedded in an attachment target, which is a ceiling, a wall, or a floor of a building, so that the lighting device can be attached thereto.

Images