Lighting device

Abstract

To provide a lighting device capable of burying a gap between a ceiling and a device body simply.SOLUTION: A lighting device comprises an elongated fixture body that is fixed to a part to be attached and to which a lamp is mounted, and an end plate that is installed at a longitudinal end part of the fixture body, covers the end part, and is attached to the fixture body in a slidable manner relative to the fixture body along the longitudinal direction of the fixture body.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a lighting device, and more particularly to a lighting device that is mounted on a ceiling. [Background technology]

[0002] In a lighting device, the dimensions of the fixture body for mounting the light source module need to be changed to match the dimensions of the recessed hole on the ceiling side where the fixture body is mounted. Preparing multiple types of light source modules with different dimensions to match the recessed hole dimensions increases manufacturing costs, while using light source modules of the same size for fixture bodies of different dimensions results in a change in the gap between the end of the fixture body and the light source module. Patent Document 1 attempts to accommodate fixture bodies of different dimensions by configuring the first end plate to be usable in either the up or down direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6248368 Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration of Patent Document 1 requires the work of switching the top and bottom of the first end plate, which is cumbersome. Furthermore, although Patent Document 1 describes that the first end plate can be used in common for products with different longitudinal lengths, the compatible dimensions are limited to a maximum of two types on one side of the device body and a maximum of four types on both sides of the device body, making it impossible to fine-tune to the actual dimensions of the attachment part.

[0005] The present disclosure aims to provide a lighting device that can easily fill the gap between a ceiling and a fixture body. [Means for solving the problem]

[0006] The lighting device according to the present disclosure comprises a fixture body having an elongated shape, fixed to a mounting portion, and having a lighting fixture attached thereto, and an end plate installed at an end of the fixture body in the longitudinal direction, covering the end, and attached to the fixture body so as to be slidable relative to the fixture body along the longitudinal direction of the fixture body. [Effects of the Invention]

[0007] According to the lighting device of the present disclosure, the end plate is slidably attached to the fixture body, making it possible to adjust the longitudinal dimension of the lighting device in a stepless manner, and ensuring that the gap between the fixture body and the end plate, or the gap between the fixture body and the ceiling, is closed reliably. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of an illumination device according to a first embodiment of the present disclosure, viewed from above. [Figure 2] 1 is an exploded perspective view of a lighting device according to a first embodiment of the present disclosure. [Figure 3] 1 is an enlarged exploded perspective view of a lighting device according to a first embodiment of the present disclosure. [Figure 4] 2 is a perspective view of an end plate of the lighting device according to the first embodiment of the present disclosure as viewed from outside the lighting fixture. FIG. [Figure 5] FIG. 2 is a bottom view of the lighting device in accordance with the first embodiment of the present disclosure when the lighting device is at its minimum size. [Figure 6] FIG. 2 is a bottom view of the lighting device in accordance with the first embodiment of the present disclosure at its maximum size. [Figure 7] 1A to 1C are perspective views illustrating an assembly procedure for the lighting device according to the first embodiment of the present disclosure. [Figure 8] FIG. 10 is a perspective view illustrating a process of fixing a connector to the lighting device according to the first embodiment of the present disclosure. [Figure 9] FIG. 10 is a perspective view illustrating a process of fixing a blindfold to the lighting device according to the first embodiment of the present disclosure. [Figure 10]FIG. 10 is a perspective view illustrating a step of connecting an end plate to the lighting device according to the first embodiment of the present disclosure. [Figure 11] 10A and 10B are bottom views illustrating a step of connecting an end plate to the lighting device in accordance with the first embodiment of the present disclosure. [Figure 12] FIG. 10 is an enlarged perspective view of a lighting device according to a modified example of the first embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiments of a lighting device according to the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to the following embodiments and can be modified in various ways without departing from the spirit and scope of the present disclosure. Furthermore, the present disclosure includes all possible combinations of the configurations shown in the following embodiments. In particular, the combinations of components are not limited to those in each embodiment; components described in one embodiment can be applied to another embodiment. The lighting device shown in the drawings is an example of a lighting device according to the present disclosure, and the lighting device according to the present disclosure is not limited to the lighting device shown in the drawings. In the following description, directional terms (e.g., "up," "down," "right," "left," "front," "rear," etc.) are used as appropriate to facilitate understanding, but these are for explanatory purposes and do not limit the present disclosure. In each drawing, components designated with the same reference numerals are identical or equivalent, and this applies throughout the entire specification. Note that the relative dimensional relationships or shapes of the components in each drawing may differ from those in the actual cases.

[0010] Embodiment 1 <Lighting device 1> Fig. 1 is a perspective view of the lighting device 1 according to the first embodiment of the present disclosure, viewed from above. Fig. 2 is an exploded perspective view of the lighting device 1 according to the first embodiment of the present disclosure. Fig. 3 is an enlarged exploded perspective view of the lighting device 1 according to the first embodiment of the present disclosure. Fig. 4 is a perspective view of the end plate 22 of the lighting device 1 according to the first embodiment of the present disclosure, viewed from outside the lighting fixture 2.

[0011] As shown in Figures 1 to 4, the lighting device 1 has an elongated lighting fixture 2 and a lamp 3 attached to the lighting fixture 2, and has an elongated shape as a whole. The lighting device 1 is installed and used on an attachment portion such as a system ceiling. In the following description, the longitudinal direction of the lighting device 1 may be referred to as the X direction, and the lateral direction of the lighting device 1 may be referred to as the Y direction. Furthermore, the area below the lighting device 1 may be referred to as the illumination area side, and the vertical direction of the lighting device 1 may be referred to as the Z direction.

[0012] <Lamp 3> The lighting fixture 3 has a light source such as an LED, a semiconductor laser, an organic EL, or an inorganic EL. The lighting fixture 3 is detachably attached to the lighting apparatus 2. The lighting fixture 3 emits light toward the illumination area.

[0013] <Lighting fixture 2> The lighting fixture 2 includes a fixture body 21 and an end plate 22. The lighting fixture 2 has a generally trapezoidal cross section as a whole. The lighting fixture 2 may have various shapes, for example, a generally rectangular cross section. The lighting fixture 2 is attached to a bar member 9, which is a structural part of a system ceiling, using a mounting part 50. The mounting part 50 extends in the Y direction and is engaged with the bar member 9 at a mounting end 501 at its end in the Y direction. The mounting part 50 is fixed to the lighting fixture 2 with a mounting screw 502 attached from the fixture body 21 side. Although not shown, in addition to the lighting fixture 2, a ceiling material, an equipment plate, another lighting fixture (lighting device), or the like is generally attached adjacent to the lighting fixture 2 between the bar members 9.

[0014] <Apparatus body 21> The fixture body 21 is a long, plate-like part extending in the X direction, which is its longitudinal direction. The fixture body 21 is arranged between adjacent bar members 9 so that its longitudinal direction is along the extension direction of the bar members 9. The dimension of the fixture body 21 in the Y direction, which is its short side direction, is approximately the same as the distance between adjacent bar members 9. The fixture body 21 houses a lighting fixture 3 having a light source (not shown).

[0015] The fixture body 21 has a top surface portion 211, side surfaces 212, a reflective surface portion 213, a connecting spring 214, a terminal block 215, and a fixture electric wire 216. The top surface portion 211 is a plate-shaped portion extending along the X direction and is located approximately in the center between adjacent bar members 9. The top surface portion 211 is provided with an insertion hole 2113 into which an external electric wire (not shown) is inserted. The external electric wire is drawn into the interior of the lighting fixture 2 through the insertion hole 2113 and connected to the terminal block 215. The fixture electric wire 216 connects the terminal block 215 and a power supply unit (not shown).

[0016] The top surface 211 has through holes formed at its end in the X direction, including a first through hole 2111 and a second through hole 2112. The first through hole 2111 and the second through hole 2112 are holes for attaching an end plate 22 to the end of the fixture body 21 in the X direction. The top surface 211 and the side surface 212 of the fixture body 21 and the end plate 22 attached to the fixture body 21 form a cylindrical mounting portion 2A with a bottom. The mounting portion 2A is a space in which the lighting fixture 3 is attached and accommodated. The first through hole 2111 and the second through hole 2112 are elongated holes extending in the longitudinal direction. The end plate 22 can be connected to the top surface 211 by the first through hole 2111 and the second through hole 2112.

[0017] The first through holes 2111 are arranged in pairs in the short direction and are composed of, for example, a rectangular first wide portion 2111a and a slit-shaped first narrow portion 2111b (see FIG. 7). An engagement piece 2231 provided on the end plate upper surface portion 223 of the end plate 22 is inserted into the rectangular first wide portion 2111a. The engagement piece 2231 of the end plate 22 slides and moves into the slit-shaped first narrow portion 2111b. The second through hole 2112 is formed between the two first through holes 2111 and is composed of, for example, a circular second wide portion 2112a and a slit-shaped second narrow portion 2112b (see FIG. 7). A connector 2232 such as a connecting screw is inserted into the circular second wide portion 2112a. A screw or the like slides and moves into the slit-shaped second narrow portion 2112b for fastening. The connector 2232 that passes through the second through-hole 2112 is screwed into a screw hole 2232a formed in the end plate upper surface portion 223.

[0018] The side surface portions 212 are portions that extend from both ends along the longitudinal direction of the top surface portion 211 toward the downward direction of the irradiation area side in a direction that intersects with the top surface portion 211. A connector fixing portion 2121 (see FIG. 7) is provided on the side surface portion 212. The connector fixing portion 2121 is formed by cutting out a portion of the side surface portion 212 so that it is set back toward the other end of the top surface portion 211 in the longitudinal direction. The connector fixing portion 2121 forms a connector fixing piece 2122 (see FIG. 7). The connector fixing piece 2122 is a portion that is inserted into the connector fixing hole 2311 of the connector 23.

[0019] The reflective surface portion 213 is a pair of plate-like portions extending from the lower end of the side surface portion 212. The reflective surface portion 213 has a flat surface 2131 extending outward in the Y direction from the side surface portion 212, and an inclined surface portion 2132 that is inclined from the outer end of the flat surface 2131 toward the irradiation area and outward in the Y direction, which is the short side direction. The reflective surface portion 213 has a reflective film that reflects light on its surface on the irradiation area side. Because the reflective film is provided on the reflective surface portion 213, a portion of the light emitted from the lighting fixture 3 hits it and is reflected toward the irradiation area side.

[0020] The connecting spring 214, which is an appliance-side connector, is a leaf spring made by bending a metal plate-shaped member. A pair of connecting springs 214 are attached to the underside of the top surface 211 along the X direction. The connecting springs 214 are provided more inward in the X direction than the first through-hole 2111 and the second through-hole 2112 of the top surface 211. The connecting springs 214 are hooked onto a spring receiver (not shown) which is a lamp-side connector provided on the lamp 3. The lamp 3 is attached to the lighting fixture 2 by the connecting spring 214 engaging with the spring receiver.

[0021] <End plate 22> End plate 22 covers the end portion in the X direction of lighting fixture 2. End plate 22 has end plate end surface portion 221, end plate side surface portion 222, end plate upper surface portion 223, and end plate lower surface portion 224.

[0022] The end plate end surface portion 221 is a plate-like portion extending along the Y direction and facing the end portion in the X direction of the fixture body 21. The plate surface of the end plate end surface portion 221 is close to the end portion in the X direction of the fixture body 21, thereby closing the gap between the ceiling material and the lighting fixture 2.

[0023] The end plate side surface portions 222 are portions that protrude inward in the X direction from both side edges in the Y direction of the end plate end face portion 221. The end plate side surface portions 222 cover and close the gaps between the end plate end face portions 221 and the device body 21 on the side surfaces of the device body 21.

[0024] The end plate upper surface portion 223 is a portion that protrudes inward in the X direction from the upper end of the end plate end surface portion 221. An engagement piece 2231 and a screw hole 2232a are formed in the end plate upper surface portion 223. The engagement piece 2231 and the screw hole 2232a constitute an engagement mechanism that engages with the first through hole 2111 and the second through hole 2112.

[0025] The engagement piece 2231 is a protruding portion that engages with the first through-hole 2111. The engagement piece 2231 is formed by cutting and raising a portion of the end plate upper surface portion 223. The engagement piece 2231 has an upright portion 2231a and a bent portion 2231b (see FIG. 4). The upright portion 2231a is a portion that stands up from the end plate upper surface portion 223 downward in the Z direction, toward the mounting portion 2A side. The bent portion 2231b is a portion that bends inward in the Y direction from the tip of the upright portion 2231a. The engagement piece 2231 may be formed integrally with the end plate upper surface portion 223, or may be configured by attaching a separate member to the end plate upper surface portion 223.

[0026] The end plate 22 is attached to the device body 21 by inserting the bent portion 2231b into the first wide portion 2111a of the first through hole 2111 formed in the top surface portion 211 of the device body 21. When the end plate 22 is attached to the device body 21, the standing portion 2231a is moved in the X direction inside the first through hole 2111 and inserted into the first narrow portion 2111b of the first through hole 2111. Because the bent portion 2231b cannot pass through the first narrow portion 2111b of the first through hole 2111, when the standing portion 2231a is moved into the first narrow portion 2111b of the first through hole 2111, the end plate 22 is engaged with the top surface portion 211. When the end plate 22 engages with the top surface portion 211, the fixture body 21 and the end plate 22 are connected, and when the standing portion 2231a moves in the X direction inside the first through hole 2111, the end plate 22 moves along the X direction relative to the fixture body 21, and the overall length of the lighting fixture 2 is adjusted.

[0027] The screw hole 2232a is a hole into which a connector 2232 such as a connecting screw is screwed. The connector 2232 inserted into the second through-hole 2112 of the top surface portion 211 of the device body 21 is screwed into the screw hole 2232a. The connector 2232 is, for example, a shoulder screw, and can move along the longitudinal direction of the second through-hole 2112 in a connected state. The connector 2232 may be a general screw or a shoulder screw, or a connecting part that performs a connecting function instead of a screw may be used. As an example of a connecting part that performs a connecting function, a configuration in which a protrusion that can engage with the second through-hole 2112 of the top surface portion 211 can be provided on the end plate upper surface portion 223 can be provided.

[0028] The engagement piece 2231 and the connecting device 2232 inserted into the screw hole 2232a maintain the end plate 22 and the instrument body 21 connected together, preventing the end plate 22 from detaching or coming off from the instrument body 21 upward or outward in the longitudinal direction.

[0029] End plate underside portion 224 is a portion that protrudes outward in the X direction from the lower end of end plate end surface portion 221. The outer edge of end plate underside portion 224 comes into close proximity with and comes into contact with a ceiling material, an equipment plate, or another lighting fixture that is adjacent to lighting fixture 2 in the X direction. By having end plate underside portion 224 come into contact with the ceiling material or equipment plate, no gaps are created between lighting fixture 2 and the ceiling material, between lighting fixture 2 and the equipment plate, or between lighting fixture 2 and another lighting fixture (lighting device), making it possible to maintain and improve the design.

[0030] <Eye Cover 24> A blindfold 24 is attached to the fixture body 21. The blindfold 24 extends along the X direction of the fixture body 21 and covers the edges of the fixture body 21 along the X direction, i.e., both ends of the fixture body 21 in the Y direction. The blindfold 24 is, for example, a plate-like member bent into an L shape in a cross section viewed in the X direction. The blindfold 24 is disposed outside the reflective surface 213 at a certain distance from the reflective surface 213, and forms a return path between the reflective surface 213 and the blindfold 24 for guiding indoor air to the ceiling space. The blindfold 24 is used to visually separate the lighting space from the ceiling space so that the return hole, structural components constituting the system ceiling, wiring components, piping components, etc., which form the return path, are not visible from the lighting space side. The blindfold 24 has a horizontal portion 241 extending in a direction parallel to the top surface portion 211 of the device body 21 and a cover portion 242 continuing from the horizontal portion 241.

[0031] The horizontal part 241 is arranged so that its end along the X direction is along the surface of the reflecting surface part 213 of the device body 21 on the attachment side. A blindfold fixing hole 2411 is formed in the region of the end of the horizontal part 241 in the X direction. The blindfold fixing hole 2411 is a slit-shaped opening that extends along the Y direction. The blindfold fixing piece 2312 of the connecting device 23 is inserted into the blindfold fixing hole 2411, so that the blindfold 24 is fixed to the device body 21 via the connecting device 23.

[0032] The cover portion 242 extends from the outer end of the horizontal portion 241 in the Y direction outward in the Y direction and at a downward incline. The cover portion 242 covers the outer side of the reflective surface portion 213 of the fixture body 21 in the Y direction. The outer surface of the end of the cover portion 242 in the X direction is in contact with the inner surface of the end plate side portion 222 of the end plate 22. The dimension of the end plate side portion 222 of the end plate 22 in the X direction is at least greater than the maximum adjustable dimension Lmax of the lighting fixture 2. Therefore, even when the end plate 22 is moved relative to the fixture body 21, the end of the blindfold 24 in the X direction and the end of the end plate side portion 222 in the X direction can be adjacent to each other without forming a gap. Note that the blindfold 24 can be configured so that the inclination angle between the horizontal portion 241 and the cover portion 242 is corrected by the cover portion 242 contacting the end plate side portion 222.

[0033] <Connector 23> The connector 23 fixes the blindfold 24 to the appliance body 21, and is a plate-like member extending in the Y direction along the inner surface of the end plate 22. The main surface portion 231 is a plate-like portion extending in the Y direction, and the flange portion 232 is a portion whose lower end protrudes outward in the X direction. The connector 23 is disposed on the outside of the appliance body 21 in the X direction so that the main surface portion 231 is along the inner surface of the end plate 22.

[0034] The connector 23 is fixed to the center of the device body 21 at the center in the Y direction. Specifically, a connector fixing hole 2311 is formed in the center in the Y direction of the main surface portion 231. The connector fixing hole 2311 is a hole into which a connector fixing piece 2122 formed on the side surface portion 212 of the device body 21 is inserted. The connector fixing piece 2122 inserted into the connector fixing hole 2311 is, for example, bent inward in the Y direction and cannot pass through the connector fixing hole 2311 in its bent state. The connector 23 is fixed to the device body 21 by inserting the connector fixing piece 2122 into the connector fixing hole 2311 and bending it.

[0035] The blindfold 24 is fixed to both ends of the connector 23 in the Y direction, and the blindfold 24 is fixed to the device main body 21 via the connector 23. Specifically, a blindfold fixing piece 2312 is provided at the upper end of both ends in the Y direction of the main surface portion 231. The blindfold fixing piece 2312 is a portion that is inserted into the blindfold fixing hole 2411 of the blindfold 24. The blindfold fixing piece 2312 is bent, for example, outward in the X direction while inserted into the blindfold fixing hole 2411, and at least a portion of it overlaps with the blindfold 24 when viewed in the up-down direction. The flange portion 232 is in contact with the reflective surface portion 213 of the device main body 21 when the connector 23 is arranged in the connector fixing portion 2121, and the connector 23 is placed on the reflective surface portion 213. The blindfold fixing piece 2312 is bent while being inserted into the blindfold fixing hole 2411 and cannot pass through the blindfold fixing hole 2411, so that the blindfold 24 is fixed to the connector 23.

[0036] By using the connector 23, the blindfold 24 can be fixed to the appliance body 21 without interfering with the attachment of the end plate 22 to the appliance body 21 or its movement along the longitudinal direction relative to the appliance body 21. Furthermore, by using the connector 23, the blindfold 24 can be easily fixed to the appliance body 21 without using fasteners such as screws or joining equipment such as welding. Furthermore, the connector 23 can correct the dimension between the side portions 212 of the appliance body 21 and fix it.

[0037] <Operation> Fig. 5 is a bottom view of the lighting device 1 in accordance with the first embodiment of the present disclosure when the lighting device 1 has a minimum dimension Lmin. Fig. 6 is a bottom view of the lighting device 1 in accordance with the first embodiment of the present disclosure when the lighting device 1 has a maximum dimension Lmax.

[0038] As shown in FIG. 5 or 6 , the lighting device 1 has an end plate 22 that moves along the X direction. The end plate 22 moves along the X direction with the upright portion 2231a of the engagement piece 2231 inserted into the first through-hole 2111 formed in the top surface 211 of the fixture body 21 and the bent portion 2231b of the engagement piece 2231 engaged with the top surface 211 of the fixture body 21. The minimum dimension Lmin of the fixture body 21 is, for example, 1260 mm, and the maximum dimension Lmax of the fixture body 21 is, for example, 1268 mm, and can be adjusted within a range of up to 4 mm at each end and up to 8 mm overall. Therefore, the longitudinal dimension of the lighting fixture 2, i.e., the dimension in the X direction, can be continuously adjusted from the minimum dimension Lmin to the maximum dimension Lmax, allowing the overall length of the lighting fixture 2 to be easily adjusted even during installation of the lighting device 1.

[0039] End plate 22 is arranged so that end plate upper surface portion 223 is aligned with the upper surface of top surface portion 211, and end plate upper surface portion 223 covers a gap between fixture body 21 and end plate end surface portion 221 that occurs when end plate 22 is moved in the X direction. End plate upper surface portion 223 also covers first through hole 2111 and second through hole 2112 formed for attaching end plate 22 to top surface portion 211 of fixture body 21. This makes it possible to prevent foreign matter such as insects or dust from entering mounting portion 2A in lighting fixture 2, where lamp 3 is housed and attached.

[0040] <Fixing the connector 23> Fig. 7 is a perspective view illustrating an assembly procedure for the lighting device 1 according to the first embodiment of the present disclosure. Fig. 8 is a perspective view illustrating a process for fixing the connector 23 to the lighting device 1 according to the first embodiment of the present disclosure.

[0041] 7 and 8 , the assembly procedure for the lighting device 1 begins with a step of fixing the connector 23. In the step of fixing the connector 23, first, the connector 23 is placed at an end of the fixture body 21 in the longitudinal direction, and the connector fixing piece 2122 of the connector 23 is held so as to be positioned outside the connector fixing portion 2121 of the side surface portion 212. Next, the connector 23 is moved toward the fixture body 21, and the connector fixing piece 2122 of the connector 23 is inserted into the connector fixing hole 2311 of the fixture body 21. In this state, the lower surface of the flange portion 232 contacts the upper surface of the reflective surface portion 213 of the fixture body 21, and the connector 23 is placed on the reflective surface portion 213. After passing through the connector fixing hole 2311, the connector fixing piece 2122 is bent inward in the short-side direction indicated by arrow F1, thereby completing the step of fixing the connector 23 to the fixture body 21. By bending the connector fixing piece 2122 that has passed through the connector fixing hole 2311, the bent portion can no longer pass through the connector fixing hole 2311, and the connector 23 can be fixed to the appliance main body 21. Therefore, the connector 23 can be easily fixed to the appliance main body 21 without using fixing devices such as screws or joining equipment such as welding.

[0042] <Fixing the blindfold 24> 9 is a perspective view illustrating a step of fixing the blindfold 24 to the lighting device 1 according to the first embodiment of the present disclosure. As shown in FIG. 9, the next step in the assembly procedure for the lighting device 1 is a step of fixing the blindfold 24. In the step of fixing the blindfold 24, the blindfold 24 is placed on the outside of the main surface portion 231 of the connector 23. Next, the blindfold fixing piece 2312 is inserted into the blindfold fixing hole 2411. After passing through the blindfold fixing hole 2411, the blindfold fixing piece 2312 is bent in the direction of arrow F2, and the blindfold 24 is fixed to both end portions of the connector 23.

[0043] The bent portion is bent, for example, so as to overlap the blindfold 24 in the vertical direction. The blindfold fixing piece 2312 may be bent in other ways as long as it is possible to fix the blindfold 24 to the connector 23. The blindfold 24 can be assembled by a simple method to the connector 23 on the device body 21 without using fixing devices such as screws or joining equipment such as welding.

[0044] <Connection of end plates 22> Fig. 10 is a perspective view illustrating a step of connecting end plate 22 to lighting device 1 according to embodiment 1 of the present disclosure. Fig. 11 is a bottom view illustrating a step of connecting end plate 22 to lighting device 1 according to embodiment 1 of the present disclosure. As shown in Figs. 10 and 11, the final step in the assembly procedure for lighting device 1 is the step of connecting end plate 22.

[0045] In the process of connecting the end plates 22, the end plates 22 are positioned outside the end portions in the X direction of the device body 21. Then, the end plate upper surface portion 223 is placed on the upper surface of the top surface portion 211 of the device body 21, and the two engagement pieces 2231 of the end plate upper surface portion 223 are inserted into the first wide portions 2111a of the first through holes 2111 of the top surface portion 211. Next, the end plate 22 is moved inward, toward the other end side in the X direction of the device body 21, toward the device body 21. As a result, the upright portions 2231a of the two engagement pieces 2231 of the end plate upper surface portion 223 are inserted into the first narrow portions 2111b of the two first through holes 2111 of the top surface portion 211. Next, the connector 2232 is inserted from the underside of the top surface 211 of the device body 21 into the second through-hole 2112 of the top surface 211, and then inserted and screwed into the screw hole 2232a of the end plate upper surface portion 223. This connects the end plate 22 to the device body 21 so as to be movable in the X direction.

[0046] <Modification> Fig. 12 is an enlarged perspective view of lighting device 1 according to a modification of embodiment 1 of the present disclosure. As shown in Fig. 12, end plate side surface portion 222 of end plate 22 is sandwiched at the lower end portion by blindfold 24.

[0047] Specifically, the blindfold 24 has a folded portion 243 formed at its lower end in the Z direction. The folded portion 243 is a portion that bends upward and extends from the lower end of the cover portion 242. When the end plate 22 is connected to the device body 21, the lower end of the end plate side portion 222 of the end plate 22 is located inside the folded portion 243. With this configuration, the lower end of the end plate side portion 222 engages with the folded portion 243, maintaining the blindfold 24 in a predetermined position and preventing deformation. Furthermore, even if the blindfold 24 is deformed, the position of the blindfold 24 can be corrected. The end plate side portion 222 has a dimension that allows it to engage with the folded portion 243 within the range of movement of the end plate 22 in the X direction. This prevents a gap from being formed between the end plate side portion 222 and the end of the blindfold 24.

[0048] According to the lighting device 1 of embodiment 1 described above, the end plate 22 is attached to the fixture body 21 so as to be slidable along the longitudinal direction of the fixture body 21, so that the longitudinal dimension of the lighting device 1 can be adjusted continuously. This closes the gap between the fixture body 21 and the end plate 22 and reliably closes the gap between the fixture body 21 and the ceiling, so that the overall design of the ceiling to which the lighting device 1 is attached can be easily maintained. Furthermore, because the end plate 22 can be easily positioned and fixed to the fixture body 21, the longitudinal dimension of the lighting device 1 can be easily adjusted during installation.

[0049] The end plate 22 also has an end plate upper surface portion 223 that protrudes from its upper end toward the fixture body 21, and an engagement piece 2231 and a screw hole 2232a are formed on the end plate upper surface portion 223. The engagement piece 2231 and the screw hole 2232a are engaged with the first through hole 2111 and the second through hole 2112 of the fixture body 21, and together with the first through hole 2111 and the second through hole 2112, form an engagement mechanism. The engagement mechanism allows the end plate 22 to slide and move inside the first through hole 2111 and the second through hole 2112 that extend in the longitudinal direction of the fixture body 21. This makes it possible to adjust the position of the end plate 22 relative to the fixture body 21, facilitating adjustment of the longitudinal dimension of the lighting fixture 2.

[0050] The engagement piece 2231 also has an upright portion 2231a extending downward from the end plate upper surface portion 223, and a bent portion 2231b bending and extending from the upright portion 2231a. The upright portion 2231a is inserted into the first through hole 2111 and is movable inside the first through hole 2111, and the bent portion 2231b is engageable with the first through hole 2111. The end plate 22 is attached to the device body 21 by the upright portion 2231a and the bent portion 2231b, which prevents the end plate 22 from detaching upward from the device body 21 or outward in the X direction.

[0051] Furthermore, the position of end plate 22 relative to fixture body 21 is adjusted by moving engagement piece 2231 through first through-hole 2111 and connector 2232 through second through-hole 2112, and end plate 22 is fixed to fixture body 21 by being fastened by connector 2232. This makes it easy to position end plate 22, and also makes it easy to adjust the longitudinal dimension of lighting fixture 2 and fix it during installation.

[0052] Furthermore, the blindfold 24 that covers the end of the fixture body 21 in the short direction is fixed to the fixture body 21 via a connector 23 that is arranged between the fixture body 21 and the end plate 22. Therefore, the blindfold 24 can be fixed to the fixture body 21 without interfering with the movement of the end plate 22. Furthermore, the connector 23 can also correct the inclination angle of the blindfold 24, which makes it easier to manufacture the lighting device 1, relaxes the precision required for the inclination angle of the blindfold 24, and reduces the manufacturing costs of the lighting device 1.

[0053] Various aspects of the present disclosure are summarized below as appendices.

[0054] (Appendix 1) a fixture body having an elongated shape, fixed to the mounting portion, and having a lighting fixture attached thereto; an end plate that is installed at an end of the instrument body in the longitudinal direction, covers the end, and is attached to the instrument body so as to be slidable relative to the instrument body along the longitudinal direction of the instrument body; A lighting device comprising: (Appendix 2) The end plate is an end plate end surface portion disposed along the end surface of the instrument body; an end plate upper surface portion that protrudes from the upper end of the end plate toward the instrument body; and The upper surface of the end plate is provided with an engagement piece that is engaged with a through hole formed in the instrument body and extending in the longitudinal direction. 10. The lighting device of claim 1. (Appendix 3) The engagement piece is an upright portion extending from the upper surface portion of the end plate toward the instrument body; a bent portion bent from the upright portion and extending in a direction parallel to the upper surface portion of the end plate; It is composed of The bent portion is engages with the through hole of the tool body, The standing portion is The through hole is slidable in the longitudinal direction. 10. The lighting device of claim 2. (Appendix 4) The device further includes a connector that connects the end plate upper surface portion and the device body, The through-hole includes a first through-hole with which the engaging piece is engaged and a second through-hole through which the connecting tool is inserted, The engaging piece moves through the first through-hole, and the connector moves through the second through-hole. The connector is fastened, thereby fixing the position of the end plate relative to the instrument body. 10. The lighting device of claim 3. (Appendix 5) a blindfold portion that covers an end portion of the device body in the short side direction; a connecting tool disposed between an end surface of the device body in the longitudinal direction and the end plate, and fixed to the device body and to the blindfold portion; Further equipped with 5. The lighting device according to claim 1. [Explanation of symbols]

[0055] 1 lighting device, 2 lighting fixture, 2A mounting portion, 3 lighting fixture, 9 bar member, 21 fixture body, 22 end plate, 23 connector, 24 concealer, 50 mounting portion, 211 top surface portion, 212 side portion, 213 reflective surface portion, 214 connecting spring, 215 terminal block, 216 fixture wire, 221 end plate end surface portion, 222 end plate side portion, 223 end plate upper surface portion, 224 end plate lower surface portion, 231 main surface portion, 232 flange portion, 241 horizontal portion, 242 cover portion, 243 folded portion, 501 mounting end portion, 502 mounting screw, 2111 first through hole, 2111a first wide portion, 2111b first narrow portion, 2112 second through hole, 2112a Second wide portion, 2112b second narrow portion, 2113 insertion hole, 2121 connector fixing portion, 2122 connector fixing piece, 2131 flat surface, 2132 inclined surface portion, 2231 engagement piece, 2231a standing portion, 2231b bending portion, 2232 connecting device, 2232a screw hole, 2311 connector fixing hole, 2312 blindfold fixing piece, 2411 blindfold fixing hole.

Claims

1. a fixture body having an elongated shape, fixed to the mounting portion, and having a lighting fixture attached thereto; an end plate that is installed at an end of the instrument body in the longitudinal direction, covers the end, and is attached to the instrument body so as to be slidable relative to the instrument body along the longitudinal direction of the instrument body; A lighting device comprising:

2. The end plate is an end plate end surface portion disposed along the end surface of the instrument body; an end plate upper surface portion that protrudes from the upper end of the end plate toward the instrument body; and The upper surface of the end plate is provided with an engagement piece that is engaged with a through hole formed in the instrument body and extending in the longitudinal direction. The lighting device according to claim 1 .

3. The engagement piece is an upright portion extending from the upper surface portion of the end plate toward the instrument body; a bent portion bent from the upright portion and extending in a direction parallel to the upper surface portion of the end plate; It is composed of The bent portion is engages with the through hole of the tool body, The standing portion is The through hole is slidable in the longitudinal direction.

3. The lighting device according to claim 2.

4. The device further includes a connector that connects the end plate upper surface portion and the device body, The through holes include a first through hole with which the engaging piece is engaged and a second through hole through which the connecting tool is inserted, The engaging piece moves through the first through-hole, and the connector moves through the second through-hole. The connector is fastened, thereby fixing the position of the end plate relative to the instrument body.

4. The lighting device according to claim 3.

5. a blindfold portion that covers an edge portion of the tool body along the longitudinal direction; a connecting tool disposed between an end surface of the device body in the longitudinal direction and the end plate, and fixed to the device body and to the blindfold portion; Further equipped with The lighting device according to any one of claims 1 to 4.

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