JP7594948B2 - Lighting system and lighting fixture - Google Patents

Description

The present invention relates to a lighting system and a lighting fixture.

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 a structure inside the ceiling. The support faces the frame part on the lower edge of the fixture body in the vertical direction. The support part, together with the frame part, sandwiches the structure inside the ceiling, thereby mounting the ceiling recessed lighting fixture to the ceiling.

Japanese Utility Model Application Publication No. 2-36116

However, with the mounting device of Patent Document 1, when lighting fixtures are connected for use, gaps may occur between adjacent lighting fixtures. This may reduce the airtightness of the space into which the light is irradiated by the lighting fixtures.

The present invention was made in consideration of the above problems, and its purpose is to provide a lighting system and lighting fixture that are less likely to reduce the airtightness of the space into which light is irradiated.

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 the gap between the first housing and the second housing.

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

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 on the outside of the first housing and the second housing. The first sealing member is disposed on the inside of the connecting member.

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

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.

The lighting device disclosed in this application is a lighting device used in the above 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.

In the lighting fixture disclosed in the present application, the light source unit may have a light-emitting element that emits light. The lighting fixture 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.

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

The lighting system and lighting fixture disclosed in the present invention make it difficult for the airtightness of the space into which light is irradiated to decrease.

1 is a side view illustrating a lighting system according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the first lighting fixture taken along line AA in FIG. 1 (first specification). FIG. 2 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; FIG. 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. 1 is a perspective view showing a part of a lighting system according to an embodiment of the present invention; FIG. 2 is another perspective view of a portion of a lighting system according to an embodiment of the present invention. 1 is a side view illustrating a portion of a lighting system according to an embodiment of the present invention. FIG. 2 is another side view of a portion of a lighting system according to an embodiment of the present invention. FIG. 11 is a side view showing a lighting system of a second specification. 15 is a cross-sectional view of the first lighting fixture taken along line BB in FIG. 14. FIG. 4 is a cross-sectional view of a lighting fixture of the third specification. 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.

Below, 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 implemented in various forms without departing from the gist of the invention. Note that where explanations overlap, they may be omitted as appropriate. Also, in the drawings, the same or equivalent parts are given the same reference symbols, and explanations will not be repeated.

In this specification, in order to facilitate understanding of the invention, the description may refer to the mutually orthogonal X, Y, and Z directions. For example, the X and Y directions are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. However, the X and Y directions 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.

First, the first specification of the lighting system 100 will be described with reference to Figs. 1 to 13. In this embodiment, the lighting system 100 can change the specifications between the first specification, the second specification, and the third specification.

The lighting system 100 is used in buildings that require 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 in this embodiment, the ceiling C is parallel to the horizontal direction, but the ceiling to which the lighting system 100 is attached may be a sloped ceiling.

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 the 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.

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 it is not necessary 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".

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

As shown in FIG. 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.

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

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.

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

The housing 30 supports the blocking member 40, the power supply unit 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 unit 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, a one-piece molded product. The material of the housing 30 is, for example, a metal such as aluminum. The heat dissipation properties of the lighting device 200 are improved by making the material of the housing 30 a metal.

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 +X side end of the first housing 30A 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 -X side end of the second housing 30B 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.

The first housing 30A and the second housing 30B are connected at the open end on the -X side of the first housing 30A and the 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 the 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 the ends of the second housing 30B that is not connected to the first housing 30A.

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 the wall of the housing 30 on the +Z side (one side in a direction perpendicular to the longitudinal direction of the housing 30). The power supply unit 50 generates power that causes the light-emitting element 721 (see FIG. 2) to generate light based on AC power supplied to one of the two terminal blocks 51. For example, the power supply unit 50 generates a DC current that causes the light-emitting element 721 (see FIG. 2) to generate light.

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

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.

The plurality of body mounting members 60 mount the lighting fixture 200 to the ceiling C, as described with reference to FIG. 2. 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.

Next, the lighting fixture 200 of this 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 A-A 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. Below, the configuration of the lighting fixture 200 will be described using the first lighting fixture 200A as an example.

As shown in FIG. 2, the housing 30 has a generally U-shape in cross-section or side view. More specifically, the housing 30 has a generally angular U-shape in cross-section or side view.

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 wall portion on the +Z side. The second wall portion 32 is a wall portion on the +Y side. The third wall portion 33 is a wall portion on the -Y side. The second wall portion 32 protrudes in the -Z direction from the end portion on the +Y side of the first wall portion 31. The third wall portion 33 protrudes in the -Z direction from the end portion on the -Y side of the first wall portion 31. The second wall portion 32 and the third wall portion 33 face each other in the Y direction.

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 -Z end of the housing 30. Specifically, the first flange 34a protrudes outward (+Y side) from the -Z end of the second wall 32. The second flange 34b protrudes outward (-Y side) from the -Z end of the third wall 33.

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.

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

As shown in FIG. 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 (+Y side surface) of the second wall portion 32. The second body mounting member 60b is attached to the outer surface (-Y side surface) 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.

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

As shown in FIG. 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 surface 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, the airtightness and thermal insulation performance of the building in which the lighting system 100 is installed can be improved.

The first sealing member 21 may be flexible or elastic, for example. When the first sealing member 21 is flexible or elastic, the first sealing member 21 can be easily attached to the first flange 34a, the second flange 34b, and the ceiling C. As a result, the gap 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.

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.

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 the substrate 722. Specifically, the light-emitting element 721 is attached to the mounting surface of the substrate 722. That is, the light-emitting element 721 is mounted on the substrate 722.

The light source unit 72 may have a COB (chip on board) structure in which a plurality of light emitting elements 721 are mounted on the mounting surface of the 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 the conductor of the substrate 722.

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.

The support member 73 supports the cover 71 so 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 so that the inner surface of the cover 71 faces the light emitting surface of the light emitting element 721.

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 from the light that has passed through the cover 71, it is preferable that the cover 71 is, for example, milky white or translucent and diffuses the light that passes 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 of the cover 71.

The shape of the cover 71 is a substantially rectangular prism. More specifically, the front, rear, both side surfaces, and bottom surface 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.

In a specification (first specification) in which the cover 71 protrudes from a structure (mounting target) such as a ceiling C, by making the cover 71 into a roughly 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 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.

Next, the 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 mounting member 80. In addition, in the lighting system 100 of the first specification, the lighting fixture 200 further includes a first adjustment member 85a.

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

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.

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, a one-piece molded product. Specifically, the first adjustment member 85a may be produced by bending a metal sheet.

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 also 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.

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.

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.

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).

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.

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 mounting member 80) so that the cover 71 protrudes from the -Z side surface (bottom 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 the first wall section 86a and the second wall section 86b of the first adjustment member 85a, respectively, so that the light source unit 70 is held in a position where the cover 71 protrudes from the -Z side surface (bottom surface) of the housing 30 and the light source section 72 is disposed inside the housing 30.

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 restricted 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 restricted by the lower end 88 of the first adjustment member 85a.

In this embodiment, the housing 30 supports the power supply unit 50 at a position away from the light emitting element 721. Specifically, the power supply unit 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, the heat generated by the power supply unit 50 and the heat generated by the light source unit 72 are less likely to interfere with each other. In addition, the heat dissipation performance of the lighting fixture 200 is improved.

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

In addition, according to this embodiment, the power supply unit 50 is disposed outside the housing 30. Therefore, the height of the housing 30 can be reduced compared to a configuration in which the power supply unit 50 is disposed inside the housing 30. This allows the amount of material used for the housing 30 to be reduced.

Next, the lighting fixture 200 of this embodiment will be described with reference to FIG. 3. FIG. 3 is an exploded perspective view of the lighting fixture 200 of this 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.

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 on the first end portion 30a side of the housing 30. The third open surface 16 is the end surface on the second end portion 30b side of the housing 30. Both ends of the housing 30 in the longitudinal direction are open.

As shown in FIG. 3, the lighting fixture 200 of this embodiment has four main body mounting members 60. More specifically, the lighting fixture 200 has two first main body mounting members 60a and two second main body mounting members 60b.

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.

As shown in FIG. 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 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.

As shown in FIG. 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.

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 positioned in positions where they can respectively engage with the three first adjustment members 85a.

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 ease of explanation, the connecting member 10 is omitted from 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.

Figure 5 is a perspective view of the connecting member 10. As shown in Figure 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 the end portion on the +Y side of the first wall portion 11. The third wall portion 13 extends in the -Z direction from the 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 sheet.

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 -Z side end of the second wall portion 12 to the +Z side end of the third wall portion 13. 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.

Figure 6 is a perspective view showing a part of the lighting system 100 of this embodiment. Figure 7 is another perspective view showing a part of the lighting system 100 of this embodiment. As shown in Figures 4, 6, and 7, the connecting member 10 is disposed on the outside of 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.

As shown in FIG. 6, the first wall 11 of the connecting member 10 faces the first wall 31 of the first housing 30A and the second housing 30B, and the second wall 12 of the connecting member 10 faces the second wall 32 of the first housing 30A and the second housing 30B. As shown in FIG. 7, the third wall 13 of the connecting member 10 faces the third wall 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.

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. Also, 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 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.

According to this 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.

The second sealing member 22 may have flexibility or elasticity, similar to the first sealing member 21. The flexibility or elasticity of the second sealing member 22 makes it easier for the second sealing member 22 to adhere closely to 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.

Next, the lighting system 100 of this embodiment will be described with reference to Figs. 8 and 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 the sake of convenience, the light source unit 70, the light source mounting member 80, and the first adjustment member 85a are omitted in Figs. 8 and 9.

As shown in FIG. 8, the sealing member 20 further includes a third sealing member 23. In other words, the lighting system 100 further includes a third sealing member 23. The third sealing member 23 seals the gap G from the inside of the first housing 30A and the second housing 30B.

In more detail, the third sealing member 23 is disposed on the inner side 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.

As shown in FIG. 9, the sealing member 20 further includes a fourth sealing member 24. In other words, the lighting system 100 further includes a fourth sealing member 24. The fourth sealing member 24 seals the gap G from the inside of the first housing 30A and the second housing 30B.

In more detail, the fourth sealing member 24 is disposed on the inner side 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.

According to this 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.

The third sealing member 23 and the fourth sealing member 24 are, for example, sealing members (tape members) 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 surfaces of the first housing 30A and the second housing 30B with double-sided tape or adhesive. By adhering 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, the third sealing member 23 and the fourth sealing member 24 become more easily adhered to the first housing 30A and the second housing 30B.

Next, the lighting fixture 200 of this embodiment will be described with reference to FIG. 10. FIG. 10 is a perspective view showing a part of the lighting system 100 of this embodiment. Below, the lighting fixture 200 will be described using the first lighting fixture 200A as an example.

As shown in FIG. 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.

The blocking portion 41 of the first lighting device 200A blocks the open end on the +X side of the first housing 30A. The blocking portion 41 of the second lighting device 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. Therefore, the airtightness of the space into which light is irradiated by the lighting system 100 can be improved. 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 light is irradiated by the lighting system 100 can be further improved.

The flange 42 of the blocking member 40 protrudes outward from the -Z end of the blocking member 41. 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 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.

Next, the terminal block 51 will be described with reference to Figs. 10 and 11. Fig. 11 is another perspective view showing a part of the lighting system 100 of this 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."

As shown in Figures 10 and 11, the terminal block 51 has a connection portion 500. The connection portion 500 is connected to an external power line F1 (see Figure 12) or a feed wiring F2 (see Figure 13). 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 Figure 12) is connected to the first connection portion 501 or the second connection portion 502. Similarly, the feed wiring F2 (see Figure 13) is connected to the first connection portion 501 or the second connection portion 502.

Next, an example of the layout of wiring that supplies power to the lighting fixture 200 will be described with reference to Figs. 12 and 13. Fig. 12 is a side view showing a portion of the lighting system 100 of this embodiment. Fig. 13 is another side view showing a portion of the lighting system 100 of this embodiment.

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 the connection portion 500 of the first terminal block 51a of the 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 to generate light from the 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.

As shown in FIG. 13, one end of the feed wiring F2 is connected to the connection portion 500 of the second terminal block 51b of the first lighting fixture 200A, and the other end of the feed wiring F2 is connected to the connection portion 500 of the first terminal block 51a of the second lighting fixture 200B. The feed wiring F2 transmits AC power from the second terminal block 51b of the first lighting fixture 200A to the first terminal block 51a of the second lighting fixture 200B.

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

The power supply unit 50 of the second lighting device 200B generates power to generate light from the light-emitting element 721 (see FIG. 2) based on the power supplied to the first terminal block 51a via the feed wiring F2.

The 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 to generate light from the light-emitting element 721 (see FIG. 2) based on the 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 feed wiring F2. The power supply device 50 of the first lighting fixture 200A generates power to generate light from the light-emitting element 721 (see FIG. 2) based on the AC power supplied to the second terminal block 51b by the feed wiring F2.

Next, the second specification lighting system 100 will be described with reference to Figs. 14 and 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.

Figure 15 is a cross-sectional view of the first lighting fixture 200A taken along line B-B in Figure 14. In detail, Figure 15 shows a cross-section of the first lighting fixture 200A embedded in the embedding hole CH in the ceiling C. Below, the configuration of the lighting fixture 200 will be described using the first lighting fixture 200A as an example.

As shown in FIG. 15, in the second specification, the cover 71 is disposed inside the housing 30. Also, 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.

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

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.

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 in a position where the cover 71 is disposed inside the housing 30.

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 the 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 restricted by the step portion 35 of the housing 30. In other words, when the light source unit 70 is attached to the housing 30, the movement of the light source unit 70 in the +Z direction is restricted by the step portion 35 of the housing 30.

As described above with reference to Figures 14 and 15, in the second specification, the cover 71 is disposed inside the housing 30. Therefore, the lighting system 100 and lighting fixture 200 in the second specification can reduce glare compared to the first specification.

Next, the third specification of the lighting system 100 will be described with reference to Figs. 14 and 16. In the third specification, like 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.

Figure 16 is a cross-sectional view of lighting fixture 200 of the third specification. In detail, Figure 16 shows a cross-section of first lighting fixture 200A taken along line B-B in Figure 14. Below, the configuration of lighting fixture 200 will be explained using first lighting fixture 200A as an example.

As shown in FIG. 16, in the third specification, the cover 71 is disposed inside the housing 30, similar to the second specification. However, in the third specification, unlike the second specification, the lighting device 200 includes a second adjustment member 85b.

The Z-direction lengths of the first wall portion 86a and the second wall portion 86b of the second adjustment member 85b are shorter than those of 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 portion 37 of the housing 30 (see FIG. 15). 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 portion 37 of the housing 30 (see FIG. 15) and the first engagement hole 87a and the second engagement hole 87b of the first adjustment member 85a.

Therefore, according to this embodiment, the position at which the light source unit 70 is held can be changed depending on whether or not the second adjustment member 85b is present, 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.

Furthermore, according to this embodiment, the specifications of the lighting system 100 and the lighting fixture 200 can be changed depending on whether or not the first adjustment member 85a and the second adjustment member 85b are present. Therefore, the designs of the first to third specifications are standardized, improving productivity.

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 this embodiment. The construction method shown in FIG. 17 includes a first step to a tenth step (steps S1 to S10).

In the first step, the worker attaches the connecting member 10 to the housing 30 (first housing 30A) of the first lighting device 200A with the light source unit 70 removed (step S1). Specifically, the worker screws the connecting member 10 to the first housing 30A.

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

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

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

In the 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).

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

In the 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 screws the connecting member 10 to the second housing 30B.

In the 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.

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

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

The above describes embodiments of the present invention 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 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.

The drawings are primarily schematic illustrations of each component to facilitate understanding of the invention, and the thickness, length, number, spacing, etc., of each component shown may differ from the actual configuration due to the convenience of creating the drawings. Furthermore, the configuration of each component shown in the above embodiment is merely an example and is 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.

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 arranged on the +X side, and the first end 30a of the second housing 30B may be arranged 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 arranged on the +X side, and the first end 30a of the first housing 30A may be arranged on the -X side.

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 the 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.

In the embodiment described with reference to Figures 1 to 17, the lighting fixture 200 has 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 the first connection portion 501 and the second connection portion 502 of the terminal block 51 of the first lighting fixture 200A, and one end of the feed wiring F2 is connected to the other of the first connection portion 501 and the second connection portion 502. The other end of the feed wiring F2 is connected to one of the first connection portion 501 and the second connection portion 502 of the terminal block 51 of the second lighting fixture 200B.

In the embodiment described with reference to Figs. 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 in a position where there is no or little thermal interference between the heat generated by the power supply device 50 and the heat generated by the light source section 72.

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 only needs to 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 the 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 the 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).

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.

Similarly, in the embodiment described with reference to Figures 1 to 17, the second sealing member 22 seals a 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 on the +Z side, 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.

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 gap G between the second wall portion 32 of the first housing 30A and the second wall portion 32 of the second housing 30B.

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 gap G between the third wall portion 33 of the first housing 30A and the third wall portion 33 of the second housing 30B.

In the embodiment described with reference to Figs. 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 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.

In the embodiment described with reference to Figures 1 to 17, the connecting member 10 is disposed on the outside of the housing 30, but the connecting member 10 may be disposed on the inside of the housing 30. In this case, the connecting member 10 connects the first housing 30A and the second housing 30B from the inside of the first housing 30A and the second housing 30B.

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 be disposed in the gap G and sandwiched between the first housing 30A and the second housing 30B.

The present invention is useful in the field of lighting, and is particularly useful for lighting installed in residential buildings such as detached houses or apartment buildings.

10: Connection member 22: Second sealing member 23: Third sealing member 24: Fourth sealing member 30: Housing 30A: First housing 30B: Second housing 50: Power supply device 70: Light source unit 72: Light source section 80: Light source attachment member 85a: First adjustment member 85b: Second adjustment member 100: Lighting system 200: Lighting device 200A: First lighting device 200B: Second lighting device 721: Light-emitting element G: Gap

Claims (6)

A lighting system comprising a first lighting fixture, a second lighting fixture, a sealing member , and a connecting member ,
The first lighting fixture is
a first light source unit that emits light;
a first housing supporting the first light source unit;
The second lighting device is
a second light source unit that emits light;
a second housing supporting the second light source unit,
each of the first housing and the second housing is an elongated member,
Each of the first housing and the second housing has a first wall portion along a longitudinal direction on a side opposite to the first light source unit or the second light source unit, and a second wall portion and a third wall portion opposed to each other,
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 disposed on the outside of the first housing and the second housing ,
the sealing member seals a gap between the first housing and the second housing,
The lighting system includes a first sealing member arranged inside the connecting member and sealing the gaps between the first wall portion, the second wall portion, and the third wall portion from the outside of the first housing and the second housing . The lighting system according to claim 1 , wherein the sealing member includes a second sealing member that seals the gap from inside the first housing and the second housing. The lighting system according to claim 1 or 2 , wherein the first housing and the second housing are embedded in an object to which the first housing and the second housing are attached. A lighting fixture for use in the lighting system according to any one of claims 1 to 3 ,
A light source unit that emits light;
and a housing for supporting the light source unit. The light source unit has a light emitting element that emits light,
The lighting device further includes a power supply device that generates power for causing the light emitting element to emit light,
The lighting device according to claim 4 , wherein the housing supports the power supply device at a position spaced apart from the light emitting element. Further comprising an adjustment member for adjusting the position of the light source unit,
The lighting device according to claim 4 , wherein the housing supports the light source unit via the adjustment member.

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