Illuminating device

Abstract

To provide an illuminating device that can reduce machining cost.SOLUTION: An illuminating device comprises: a lighting fixture for emitting light to an irradiation region; and an appliance having a long shape, installed on an attachment object part on the side opposite to the irradiation region, and fitted with the lighting fixture. The appliance comprises: an appliance body comprising a fitting part fitted with the lighting fixture, and inclined parts extending to the side of the irradiation region from both end parts along the longitudinal direction of the fitting part, and inclined with respect to the fitting part; and end plates arranged on end parts in the longitudinal direction of the fitting part, and covering the end parts. The end plates comprise: end plate side fixing pieces provided so as to extend in the direction of the fitting part from end parts on the side of the attachment object part, and fixed to the fitting part; and correction parts provided on end parts on the side of the irradiation region, in contact with the inclined parts while the end plate side fixing pieces are fixed to the fitting part, and for correcting the inclination angles of the inclined parts with respect to the fitting part.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to lighting devices, and more particularly to the structure of lighting devices. [Background technology]

[0002] In a known lighting device, as in Patent Document 1, for example, four claws protruding outward are provided at the longitudinal ends of the case, which is the main body, and square holes for inserting the four claws are provided in an end plate attached to the longitudinal end of the main body. The claws are provided on the horizontal and inclined portions of the main body, and the main body and the end plate are fastened together by bending each of the four claws inserted into the square holes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-134620 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, four claws are inserted into four square holes, and if the bending angle between the horizontal and inclined portions of the main body is not precisely machined, the insertion operation becomes difficult, so precision is required for the bending angle when bending the horizontal and inclined portions of the main body. If precision is required for the bending angle, the processing cost required for bending the main body increases, leading to an increase in the material cost for the main body.

[0005] Furthermore, because there are multiple bending angles or orientations for the claws, when fastening the main body and end plate together to assemble, it is time-consuming to bend the four claws inserted into the square holes. For this reason, the claw configuration as in Patent Document 1 increases the processing costs for the parts, which in turn increases the processing costs for assembling the device.

[0006] The present disclosure aims to provide a lighting device that can reduce processing costs. [Means for solving the problem]

[0007] The lighting device according to the present disclosure comprises a lighting fixture that emits light to an illumination area, and a fixture having an elongated shape and installed on a mounting portion opposite the illumination area, to which the lighting fixture is attached. The fixture comprises a mounting portion to which the lighting fixture is attached, and a fixture body having inclined portions extending from both longitudinal ends of the mounting portion toward the illumination area and inclined relative to the mounting portion, and an end plate that is arranged at an end of the mounting portion in the longitudinal direction and covers the end, the end plate having an end plate side fixing piece that is fixed to the mounting portion and extends from the end on the mounting portion side toward the mounting portion, and a correction portion that is provided at the end on the illumination area side and comes into contact with the inclined portion when the end plate side fixing piece is fixed to the mounting portion, to correct the inclination angle of the inclined portion relative to the mounting portion. [Effects of the Invention]

[0008] According to the lighting device of the present disclosure, when the end plate is integrated with the main body portion by the end plate side fixing piece, the correction portion comes into contact with the inclined portion, correcting the inclination angle of the inclined portion relative to the mounting portion, thereby easing the precision of the inclination angle of the inclined portion during processing and reducing processing costs. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of the lighting device according to the first embodiment of the present disclosure, viewed from below. [Figure 2] 1 is an exploded perspective view of a lighting device according to a first embodiment of the present disclosure, viewed from above. [Figure 3] 1 is a partially exploded perspective view of a lighting device according to a first embodiment of the present disclosure. [Figure 4] FIG. 2 is a partial perspective view of the lighting device according to the first embodiment of the present disclosure, with a first end plate attached to the fixture body. [Figure 5]1 is a partial side view of a state in which a first end plate is attached to a fixture body of an illumination device in accordance with a first embodiment of the present disclosure. [Figure 6] 2 is a perspective view of a first end plate of the lighting device according to the first embodiment of the present disclosure as viewed from the inside. FIG. [Figure 7] 1 is a partial perspective view of a lighting device according to a first embodiment of the present disclosure, viewed from below. [Figure 8] 5A to 5C are perspective views illustrating an assembly procedure for the first end plate of the lighting device according to the first embodiment of the present disclosure. [Figure 9] 5A to 5C are perspective views illustrating an assembly procedure for the first end plate of the lighting device according to the first embodiment of the present disclosure. [Figure 10] 5A to 5C are enlarged perspective views illustrating an assembly procedure for the first end plate of the lighting device according to the first embodiment of the present disclosure. [Figure 11] 5A to 5C are enlarged perspective views illustrating an assembly procedure for the first end plate of the lighting device according to the first embodiment of the present disclosure. [Figure 12] 1 is a partial perspective view of the lighting device according to the first embodiment of the present disclosure with a blindfold attached. FIG. [Figure 13] FIG. 2 is a partial perspective view of a blindfold portion of the lighting device according to the first embodiment of the present disclosure. [Figure 14] FIG. 2 is a partial perspective view of a blindfold portion of the lighting device according to the first embodiment of the present disclosure. [Figure 15] FIG. 10 is a partial side view of an illumination device according to a modified example of the first embodiment of the present disclosure. [Figure 16] FIG. 10 is a partial perspective view of an illumination device according to a second embodiment of the present disclosure. [Figure 17] FIG. 10 is a partial side view of an illumination device according to a second embodiment of the present disclosure. [Figure 18] FIG. 11 is a partial perspective view of an illumination device according to a modified example of the second embodiment of the present disclosure. [Figure 19] FIG. 10 is a partial side view of an illumination device according to a modified example of the second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] 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.

[0011] 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, as viewed from below. FIG. 2 is an exploded perspective view of the lighting device 1 according to the first embodiment of the present disclosure, as viewed from above. FIG. 3 is a partially exploded perspective view of the lighting device 1 according to the first embodiment of the present disclosure. FIG. 4 is a partial perspective view of the lighting device 1 according to the first embodiment of the present disclosure, in which a first end plate 22 is attached to the fixture body 21. In FIG. 4, a dashed dotted line L indicates a cutting line of the fixture body 21. FIG. 5 is a partial side view of the lighting device 1 according to the first embodiment of the present disclosure, in which the first end plate 22 is attached to the fixture body 21. FIG. 6 is a perspective view of the first end plate 22 of the lighting device 1 according to the first embodiment of the present disclosure, as viewed from inside.

[0012] As shown in FIGS. 1 to 6, the lighting device 1 has an elongated shape and includes a lighting fixture 3 and a lighting apparatus 2 to which the lighting fixture 3 is attached. The lighting device 1 is installed and used on a mounting portion such as a system ceiling. The lighting device 1 may be a direct ceiling mount type, a recessed ceiling type, or an open-bottom type, and is not limited to a system ceiling as a mounting portion. In the following description, the longitudinal direction of the lighting device 1 is referred to as the X direction, the lateral direction of the lighting device 1 is referred to as the Y direction, and the vertical direction of the lighting device 1 is referred to as the Z direction. Furthermore, when the lighting device 1 is attached, the upper side of the lighting device 1 is also referred to as the mounting portion side. Furthermore, when the lighting device 1 is attached, the lower side of the lighting device 1 is also referred to as the illumination area side.

[0013] <Lamp 3> The lighting fixture 3 has a light source such as an LED, a semiconductor laser, an organic EL, or an inorganic EL, and constitutes a light source unit 4. The lighting fixture 3 is detachably attached to the lighting apparatus 2. The lighting fixture 3 emits light in an illumination direction.

[0014] <Lighting fixture 2> The lighting fixture 2 comprises a fixture body 21 having a top panel portion 211, side wall portions 212, and an inclined portion 213, and a first end plate 22 covering the ends of the top panel portion 211 and the side wall portion 212. The lighting fixture 2 also comprises a second end plate 23, a blind portion 24, and a holding mechanism 50. The lighting fixture 2 is attached to a bar member 9 of an attachment portion by the holding mechanism 50. The attachment portion is, for example, a system ceiling. 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 first end plate 22 is an example of an end plate.

[0015] <Apparatus body 21> The fixture body 21 is an elongated part extending along the X direction, which is the longitudinal direction. The fixture body 21 is disposed midway between adjacent bar members 9 so that its longitudinal direction coincides with the direction in which the bar members 9 extend. The dimension of the fixture body 21 in the Y direction, which is the short side direction, is approximately the same as the interval between adjacent bar members 9. The fixture body 21 houses the lighting fixture 3.

[0016] The device body 21 has a top plate portion 211, a side wall portion 212, an inclined portion 213, and a connecting spring 214. The top plate portion 211, the side wall portion 212, and the inclined portion 213 are integrally formed by bending a single plate-shaped member made of metal or the like.

[0017] The top plate portion 211 is a portion extending along the X direction and located midway between adjacent bar members 9. A pair of top plate portion slits 2111 formed in the top plate portion 211 are, for example, groove-shaped openings facing each other. The configuration of the pair of top plate portion slits 2111 is not limited thereto and, for example, they may penetrate in the short direction. The top plate portion 211 is provided with an area to which a terminal block (not shown) is attached and insertion holes 2112 into which electric wires (not shown) are inserted. An electric wire connecting an external power source to a power supply unit (not shown) is drawn into the lighting fixture 2 through the insertion holes 2112. The top plate portion 211 is provided with a body-side fixing hole 2113 for fixing the first end plate 22. The body-side fixing hole 2113 is formed in an end area of the top plate portion 211 in the X direction and is, for example, a rectangular hole penetrating the top plate portion 211. The restricting portion 54 of the holding mechanism 50 is attached to the inner surface of the top panel portion 211 .

[0018] The side walls 212 extend from both ends of the top plate 211 in the X direction toward the illumination area in the Z direction. The side walls 212 form an accommodation space S between the top plate 211 and the side walls 212, in which the lighting fixture 3 is attached and accommodated. The top plate 211 and the side walls 212 are an example of an attachment portion.

[0019] The inclined portions 213 are portions extending from both lower ends of the side wall portions 212 in the Y direction. The inclined portions 213 are inclined toward the irradiation area side and outward in the Y direction. In other words, the inclined portions 213 are inclined at an inclination angle α (see FIG. 5) with respect to the top plate portion 211. A reflective film that reflects light is provided on the inclined portions 213. By providing the reflective film on the inclined portions 213, part of the light emitted from the lighting fixture 3 hits the inclined portions 213 and is reflected toward the irradiation area side.

[0020] The inclined portion 213 includes a rising portion 2131 and a folded portion 2132. The rising portion 2131 is provided at the end of the inclined portion 213 in the Y direction, and extends from the end of the inclined portion 213 in the short direction toward the attachment portion, that is, upward.

[0021] The folded portion 2132 is provided at the upper end of the rising portion 2131, i.e., at the end on the attached portion side, and is continuous with the upper end of the rising portion 2131 and extends inward in the Y direction. A part of the folded portion 2132 serves as a main body side fixed piece 2133. The main body side fixed piece 2133 is formed by a pair of slits in the folded portion 2132 that open inward in the Y direction.

[0022] The connecting springs 214 are leaf springs made by bending long, plate-shaped metal members. A pair of connecting springs 214 are attached to the underside of the top plate 211 with their longitudinal directions aligned with the X direction. The connecting springs 214 are provided inward in the X direction from the top plate slits 2111 of the top plate 211. A lamp-side connector (not shown) of the lamp 3 is hooked onto the connecting springs 214. The lamp 3 is fixed to the lighting fixture 2 by the connecting springs 214.

[0023] <Blindfold Section 24> The blinding portion 24 extends along the X direction of the fixture body 21 and covers both ends of the fixture body 21 in the Y direction. The blinding portion 24 is, for example, a plate-like member bent into an L shape in cross section. The blinding portion 24 is disposed outside the inclined portion 213 at a certain distance from the inclined portion 213, and forms a return path between the blinding portion 24 and the inclined portion 213 for guiding indoor air to the space above the ceiling. The blinding portion 24 has a horizontal portion 241 extending in a direction parallel to the top panel portion 211 and a cover portion 242 continuing from the horizontal portion 241.

[0024] The horizontal portion 241 is arranged so that its end along the X direction is along the surface of the inclined portion 213 of the instrument body 21 on the attachment portion side. A retaining hole 2411 is formed in the region of the end of the horizontal portion 241 in the X direction. The retaining hole 2411 is a slit-shaped opening that extends along the X direction. The end of the horizontal portion 241 in the X direction is placed on the first end plate 22 and is held to the first end plate 22 by the retaining hole 2411.

[0025] The cover portion 242 is a portion that extends obliquely downward from the Y-direction end portion of the horizontal portion 241 to the outside in the Y direction. The cover portion 242 covers the outside in the Y direction of the inclined portion 213 of the appliance body 21.

[0026] <First end plate 22> The first end plate 22 is disposed on the attachment portion side, above the end in the X direction of the device body 21. In other words, the first end plate 22 covers the end of the horizontal portion 241 in the X direction.

[0027] The first end plate 22 has a first end plate body 221, an end plate side portion 222, a first upper flange portion 223, a first lower flange portion 224, an end plate side fixing piece 225, a correcting portion 226, and an attachment guide 227. The first end plate body 221 extends along the Y direction.

[0028] The end plate side portions 222 are portions that extend in the X direction from both ends in the Y direction of the first end plate body 221 toward the instrument body 21. The end plate side portions 222 have holes formed therein through which the fixing screws 511 of the holding mechanism 50 are inserted.

[0029] The first upper flange portion 223 and the first lower flange portion 224 are portions that extend from both end portions in the Z direction of the first end plate body 221 toward the instrument body 21 in the X direction. The first upper flange portion 223 is provided at the upper end of both end portions in the Z direction of the first end plate body 221. The first lower flange portion 224 is provided at the lower end of both end portions in the Z direction of the first end plate body 221. An opening 224a for attaching the second end plate 23 is formed in the first lower flange portion 224. The opening 224a is provided in the regions of both end portions in the Y direction of the first lower flange portion 224.

[0030] The end plate fixing piece 225 is a protruding piece provided to extend from the upper end of the first end plate main body 221, i.e., the end on the attachment side, toward the top plate portion 211 of the device body 21, i.e., inward in the X-direction. The end plate fixing piece 225 is formed, for example, to extend from a part of the first upper flange portion 223. Before the first end plate 22 is assembled, the end plate fixing piece 225 extends straight inward in the X-direction, as shown by the dotted line in Fig. 6. After the first end plate 22 is assembled, the end plate fixing piece 225 is bent downward, toward the irradiation area, at a bent portion 225a, as shown by the solid line in Fig. 6, and inserted into the device body fixing hole 2113 of the device body 21.

[0031] The first end plate 22 is integrated with the instrument body 21 by inserting and fastening the end plate fixing piece 225 into the body fixing hole 2113 of the instrument body 21. Fastening the end plate fixing piece 225 to the body fixing hole 2113 makes it possible to fasten the first end plate 22 to the instrument body 21 without using fixing members such as screws. Furthermore, the end plate fixing piece 225 is fastened to the body fixing hole 2113 by the simple process of bending and inserting it.

[0032] The correcting portion 226 is provided on the first lower flange portion 224, which is provided at the end of the device body 21 on the irradiation area side, i.e., the lower end. The correcting portion 226 extends from both ends of the first lower flange portion 224 in the Y direction toward the irradiation area side, i.e., downward. The correcting portion 226 is a portion that contacts the inclined portion 213 when the end plate side fixing piece 225 is fixed to the top plate portion 211 of the device body 21. The contact of the correcting portion 226 with the inclined portion 213 corrects the inclination angle α, which is the angle of the inclined portion 213 with respect to the side wall portion 212, thereby easing the accuracy of the bending process of the device body 21. Correcting the inclination angle α of the inclined portion 213 with the correcting portion 226 eliminates the need to provide a portion, such as a claw portion, on the device body 21 that protrudes outward in the X direction from the cutting line indicated by the dashed dotted line L in FIG. 4 in order to correct the inclination angle α.

[0033] Protruding portions such as claws are typically formed by peripheral punching, a process for cutting out the outer periphery of a metal sheet. However, eliminating the protruding portions eliminates the need for peripheral punching, thereby reducing processing costs. When the punch die and die are misaligned during cutting, a step occurs on the cut surface, resulting in unevenness. However, eliminating the protruding portions reduces the risk of misalignment of the die. Eliminating the protruding portions eliminates the excess material required to form the protruding portions, improving material utilization efficiency and reducing waste, thereby simplifying the processing of the device body 21 and improving yield. Furthermore, eliminating the need to consider the step that occurs during peripheral punching eliminates the need to consider deformation of the protruding portions when attaching the first end plate 22 to the device body 21, simplifying parts management and reducing management costs.

[0034] The correcting portion 226 has a connecting portion 2261, a correcting piece 2262, a holding piece 2263, and a correcting protrusion 2264. The connecting portion 2261 is a portion that extends from the end of the first lower flange portion 224 in the Y direction toward the irradiation area, that is, downward.

[0035] Correcting piece 2262 is a portion that extends outward in the Y direction from the lower end of connecting portion 2261. Correcting piece 2262 comes into contact with the lower surface of folded portion 2132 of inclined portion 213, i.e., the surface on the irradiation area side, and corrects inclination angle α of inclined portion 213. In the lighting device 1, when a return path for guiding indoor air to the ceiling space is provided outside inclined portion 213, correcting piece 2262 functions to correct inclination angle α of inclined portion 213.

[0036] An end plate side fixing hole 2262a is formed in the correcting piece 2262. The end plate side fixing hole 2262a is, for example, a square hole. The end plate side fixing hole 2262a is a hole into which the main body side fixing piece 2133 of the folded portion 2132 is inserted.

[0037] The main body-side fixed piece 2133 of the folded-back portion 2132 is folded downward into the end plate-side fixed hole 2262a with the inclined portion 213 in contact with or disposed near the corrective piece 2262. Therefore, the inclination angle α of the inclined portion 213 is determined by the simple process of bending and inserting, without using any fixing members such as screws. Because the main body-side fixed piece 2133 is folded downward, which is the same direction as the end plate-side fixed piece 225 fixed to the top plate 211 of the fixture main body 21, the assembly work of the lighting device 1 is simplified and the assembly work can be easily automated.

[0038] The retaining piece 2263 is provided at the upper end of the connecting portion 2261 and protrudes toward the attached portion. The retaining piece 2263 is formed at a position corresponding to the retaining hole 2411 (see FIG. 3) of the blinding portion 24. The retaining piece 2263 is fitted into the retaining hole 2411 of the blinding portion 24 and, while fitted, is bent outward in the Y direction to hold the blinding portion 24 and fasten it to the first end plate 22. The retaining piece 2263 can hold and fasten the blinding portion 24 to the first end plate 22 by simply inserting and bending it, without using a fixing member such as a screw. The retaining piece 2263 may be configured to be bent inward rather than outward in the Y direction. In addition, the retaining piece 2263 may be configured to protrude inward in the Y direction from the upper end of the connecting portion 2261, rather than toward the attached portion, and in this case, the retaining piece 2263 may be bent downward after being inserted into the retaining hole 2411.

[0039] Correcting protrusion 2264 is a portion provided at the lower end of connecting portion 2261 and protruding toward the irradiation area. Correcting protrusion 2264 comes into contact with inclined portion 213 and functions to correct inclination angle α, for example, when a return path for guiding indoor air to the ceiling space is not provided outside inclined portion 213 in lighting device 1.

[0040] The mounting guide 227 is a portion of the first lower flange portion 224 that protrudes inward in the X direction from an end portion on the inner side in the X direction. A pair of mounting guides 227 are formed so as to contact the outer surfaces in the Y direction of the pair of side wall portions 212. The mounting guides 227 are provided to guide the first end plate 22 so that the first end plate 22 is positioned at a predetermined position in the X direction of the instrument body 21 when the first end plate 22 is mounted to the instrument body 21. The mounting guides 227 are also provided to ensure that the storage space S has a predetermined shape and correct the end of the opening of the storage space S so that it does not expand when the first end plate 22 is mounted to the instrument body 21. In other words, the mounting guides 227 prevent the pair of side wall portions 212 from expanding outward in the Y direction at their lower ends, thereby correcting the width of the pair of side wall portions 212.

[0041] When the first end plate 22 is attached to the instrument body 21, the pair of attachment guides 227 sandwich the pair of side wall portions 212 from the outside in the Y direction. The spacing dimension W1 between the pair of attachment guides 227 is equal to or greater than the width dimension W2 of the top plate portion 211 (see FIG. 8). The pair of attachment guides 227 prevent the width dimension W3 (see FIG. 5) of the pair of side wall portions 212 from becoming larger than a predetermined width, for example, 65 mm.

[0042] The mounting guide 227 is in the form of a plate extending in a direction parallel to the top plate 211. When correcting the width of the pair of side wall portions 212, stress acts on the mounting guide 227 from each side wall portion 212 outward in the Y direction. Because the mounting guide 227 is in the form of a plate extending in a direction parallel to the top plate 211, stress from the side wall portions 212 acts in a direction perpendicular to the plate thickness direction, making the mounting guide 227 less likely to deform.

[0043] A key portion 2271 is formed on the mounting guide 227. The key portion 2271 is a portion that protrudes inward in the Y direction from the inner end portion in the Y direction of the mounting guide 227. In other words, the key portions 2271 formed on each of the pair of mounting guides 227 are formed to protrude in directions that bring them closer to each other. The key portion 2271 is fitted into a groove portion 2121 formed in the side wall portion 212. Since the key portion 2271 is fitted into the groove portion 2121, the first end plate 22 does not come off the instrument body 21.

[0044] <Second end plate 23> The second end plate 23 is arranged on the irradiation area side, below the end in the X direction of the device body 21. The second end plate 23 covers the underside of the end in the X direction of the device body 21. The second end plate 23 has a second end plate body 231, a second upper flange portion 232, and a second lower flange portion 233.

[0045] The second end plate body 231 is a long, plate-shaped portion extending along the Y direction. The second end plate body 231 is disposed on the same plane as the first end plate body 221 of the first end plate 22.

[0046] The second upper flange portion 232 is a portion that continues from the upper end of the second end plate main body 231 and extends toward the instrument main body 21 in the X direction. End plate claw portions 232a are formed on the second upper flange portion 232. The end plate claw portions 232a are portions that are inserted into openings 224a formed in the first lower flange portion 224 of the first end plate 22. The second end plate 23 is attached to the first end plate 22 by inserting the end plate claw portions 232a into the openings 224a. The end plate claw portions 232a are provided on both ends of the second upper flange portion 232 in the short direction. The end plate claw portions 232a are formed, for example, by L-shaped notches whose tips extend toward the second end plate main body 231. When the end plate claw portion 232a is inserted into the opening 224a of the first end plate 22 with its tip elastically deformed, it returns to its original shape due to the restoring force and its tip comes into contact with the inner surface of the first end plate main body 221, thereby attaching the second end plate 23 to the first end plate 22.

[0047] The second lower flange portion 233 is continuous with the lower end of the second end plate body 231 and extends outward in the X direction opposite the fixture body 21, overhanging toward the outside of the fixture body 21. Both ends of the second lower flange portion 233 are placed on the upper ends of the bar members 9, thereby holding the lighting fixture 2 to the mounting portion. For example, the overhang dimension of the second lower flange portion 233, which is the dimension by which the second lower flange portion 233 overhangs the outside of the fixture body 21, can be adjusted. By adjusting the overhang dimension of the second lower flange portion 233, the overall dimension of the lighting device 1 in the X direction can be adjusted. For example, in renovation work in which an existing lighting device 1 is replaced with a lighting device 1, it is possible to provide a lighting device 1 with optimal dimensions corresponding to each individual existing lighting device 1.

[0048] <Holding mechanism 50> The holding mechanism 50 is a mechanism for holding the lighting fixture 2 on the bar member 9. The holding mechanism 50 is attached to the lighting fixture 2 and placed on the top of the bar member 9. The holding mechanism 50 has a fixed portion 51, an elastic portion 52, a movable portion 53, and a restricting portion 54. The fixed portion 51 is fixed to the lighting fixture 2 with a fixing screw 511 and is placed on the bar member 9. The elastic portion 52 is elastically deformable, and in an elastically deformed state, applies an outward force to the bar member 9. The lighting fixture 2 is held on the bar member 9 by the elastic portion 52. The movable portion 53 is vertically movable relative to the lighting fixture 2, and when moved downward, i.e., when pressed down, elastically deforms the elastic portion 52.

[0049] 7 is a partial perspective view of the lighting device 1 according to the first embodiment of the present disclosure, viewed from below. As shown in FIG. 7 , the restricting portion 54 is disposed inside the top plate portion 211 and is slidable in the X direction. When the restricting portion 54 is slid toward the first end plate 22, that is, outward in the X direction, the restoring force of the elastic portion 52 counters the reaction force of the elastic portion 52 and restricts the upward movement of the movable portion 53. A notch 54a is provided in a portion of the surface of the restricting portion 54 facing the top plate portion 211, so as to prevent interference with the end plate side fixing piece 225 folded into the main body side fixing hole 2113 of the top plate portion 211.

[0050] <Installation Procedure> 8 is a perspective view illustrating a procedure for assembling the first end plate 22 of the lighting device 1 according to the first embodiment of the present disclosure. As illustrated in FIG. 8, in assembling the first end plate 22 of the lighting device 1, first, the first end plate 22 is disposed on the outer side of the fixture body 21 in the X direction.

[0051] Next, the first end plate 22 is slid along the X direction in the direction of arrow A in Fig. 8 and is placed at the end in the X direction of the instrument body 21. At this time, the first end plate 22 is placed at the end of the instrument body 21 so that the mounting guides 227 sandwich the side wall portion 212 of the instrument body 21 from the outside.

[0052] Then, the first end plate 22 is abutted against the instrument body 21 so that the first end plate body 221 of the first end plate 22 contacts the end of the instrument body 21. In this state, the key portion 2271 of the mounting guide 227 fits into the groove portion 2121 of the side wall portion 212. This fixes the first end plate 22 to the instrument body 21 and prevents the first end plate 22 from coming off the instrument body 21.

[0053] Fig. 9 is a perspective view illustrating the assembly procedure of first end plate 22 of lighting device 1 according to embodiment 1 of the present disclosure, illustrating the step subsequent to that of Fig. 8. In Fig. 9, arrow B indicates the direction in which end plate-side fixing piece 225 is bent, and arrow C indicates the direction in which main body-side fixing piece 2133 is bent.

[0054] 9, when the first end plate 22 is fixed to the instrument body 21, the end plate-side fixing piece 225 of the first end plate 22 is folded and inserted into the body-side fixing hole 2113 formed in the top plate portion 211 of the instrument body 21. In other words, the end plate-side fixing piece 225 is folded from a straight extending shape in the direction of arrow B to a shape extending downward.

[0055] The work of folding in the end plate-side fixing piece 225 is performed using a pointed tool such as the tip of a screwdriver. The end plate-side fixing piece 225 and the main body-side fixing hole 2113 allow the first end plate 22 to be fastened to the top plate portion 211 of the instrument main body 21 by the simple work of folding and inserting, without using fixing members such as screws.

[0056] Fig. 10 is an enlarged perspective view illustrating the procedure for assembling the first end plate 22 of the lighting device 1 according to the first embodiment of the present disclosure, and is a perspective view illustrating the step following that of Fig. 9. Fig. 11 is an enlarged perspective view illustrating the procedure for assembling the first end plate 22 of the lighting device 1 according to the first embodiment of the present disclosure, and is a perspective view illustrating the opposite side to that of Fig. 10. In Figs. 10 and 11, arrow C indicates the direction in which the main body side fixing piece 2133 is bent, similar to Fig. 9.

[0057] 10 and 11, when the end plate-side fixing piece 225 is folded into the body-side fixing hole 2113, the body-side fixing piece 2133 provided on the inclined portion 213 is bent in the direction of arrow C. In other words, the body-side fixing piece 2133 is bent downward from a straight extending state, and assumes a downward extending shape.

[0058] The bent main body-side fixed piece 2133 is inserted into the end plate-side fixing hole 2262a provided in the correcting piece 2262 of the first end plate 22, and is folded into the end plate-side fixing hole 2262a. By folding the main body-side fixed piece 2133 into the end plate-side fixing hole 2262a, the inclined portion 213 comes into contact with or is arranged near the correcting portion 226, and the position of the inclined portion 213 is fixed. At this time, since the first end plate 22 of the instrument main body 21 is fastened to the top plate portion 211, the position of the inclined portion 213 is fixed by the correcting portion 226. As a result, the inclination angle α of the inclined portion 213 with respect to the top plate portion 211 is corrected to a desired angle.

[0059] In this way, the main body-side fixed piece 2133 and the end plate-side fixed hole 2262a are fastened together by the simple process of bending and inserting without using any fixing members such as screws, thereby determining the inclination angle α of the inclined portion 213. Furthermore, the direction of arrow B in which the end plate-side fixed piece 225 is bent and the direction of arrow C in which the main body-side fixed piece 2133 is bent are the same and common. This simplifies the assembly process of the first end plate 22 and facilitates automation of the assembly process.

[0060] Fig. 12 is a partial perspective view of the lighting device 1 according to the first embodiment of the present disclosure with the blindfold unit 24 attached. Fig. 13 is a partial perspective view of the blindfold unit 24 in the lighting device 1 according to the first embodiment of the present disclosure. Fig. 14 is a partial perspective view of the blindfold unit 24 in the lighting device 1 according to the first embodiment of the present disclosure, as viewed from the opposite side of Fig. 13.

[0061] 12 to 14, when the main body-side fixing piece 2133 is folded into the end plate-side fixing hole 2262a, the blindfold part 24 is placed on the correcting part 226 and attached to the appliance main body 21. The blindfold part 24 is placed on the correcting part 226 and held by the correcting part 226 with the holding piece 2263 of the correcting part 226 inserted into the holding hole 2411. The holding piece 2263 inserted into the holding hole 2411 is bent outward in the Y direction, whereby the blindfold part 24 is held and fastened to the first end plate 22.

[0062] <Modification> 15 is a partial side view of lighting device 1 according to a modification of embodiment 1 of the present disclosure. As shown in FIG. 15, inclined portion 213 may be configured to come into contact with correcting protrusion 2264 of correcting portion 226.

[0063] For example, if lighting device 1 does not have a return path for guiding indoor air to the ceiling, rising portion 2131 of inclined portion 213 is positioned away from correcting portion 226, and therefore correcting piece 2262 cannot come into contact with inclined portion 213. Even in such a case, correcting protrusion 2264 of correcting portion 226 comes into contact with inclined portion 213, thereby achieving the function of correcting inclination angle α.

[0064] In the lighting device 1 according to the first embodiment described above, when the first end plate 22 is fixed to the fixture body 21, the correcting portion 226 of the first end plate 22 contacts the inclined portion 213 of the fixture body 21, thereby correcting the inclination angle α of the inclined portion 213. In other words, the bending angle of the fixture body 21 is corrected by the shapes of the fixture body 21 and the first end plate 22 and the arrangement of the body-side fixing hole 2113 and the end plate-side fixing piece 225 of the fixture body 21. Therefore, it is not necessary to maintain the accuracy of the bending of the fixture body 21. Even if the bending accuracy is poor, the fixture can be assembled, thereby reducing the processing costs for parts and assembly. Furthermore, the relaxed accuracy of the bending of the fixture body 21 contributes to reducing the bending cost and the material cost of the fixture body 21. Furthermore, because there are no claws or other parts protruding from the fixture body 21 toward the first end plate 22, unevenness in the finished surface can be eliminated, thereby reducing the processing costs for parts. Furthermore, the first end plate 22 is provided with a structure for correcting or determining the inclination angle α of the inclined portion 213 of the fixture body 21. As a result, there is no need to strictly maintain or control the inclination angle α or bending angle of the fixture body 21 alone, so the processing precision is relaxed and deformation after processing is permitted. In other words, the fixture body 21 alone does not require the rigidity required to strictly maintain or control the inclination angle α or bending angle, so the thickness dimension of, for example, a metal plate material used in the fixture body 21 can be reduced. This provides effects such as thinner and lighter plates, improved workability, improved transportation efficiency, and reduced environmental impact.

[0065] Furthermore, since the first end plate 22 and the instrument body 21 are integrated by inserting the end plate side fixing piece 225 into the body side fixing hole 2113 of the top plate portion 211, the parts are easily assembled for integration, and the processing costs associated with assembly can be reduced.

[0066] Furthermore, the end plate side fixing piece 225 is bent toward the top plate portion 211 and inserted into the main body side fixing hole 2113 and folded in, so that it can be fastened by the simple process of bending and inserting without using fixing members such as screws.

[0067] Furthermore, the inclination angle α of the inclined portion 213 is corrected by the contact of the correction piece 2262 of the first end plate 22 with the folded portion 2132 of the inclined portion 213, and the instrument body 21 does not have any protruding portions, such as claws, protruding outward in the X direction. This eliminates the need for peripheral punching for the protruding portions, reducing processing costs and eliminating excess material for forming the protruding portions, improving material utilization efficiency, reducing waste, and enabling material cost reduction. Furthermore, although the step generated during peripheral punching can cause defects depending on the degree of the step, eliminating the need to consider the step simplifies the processing of the instrument body 21 and improves yield. Furthermore, since there are no protruding portions, there is no need to consider deformation of the protruding portions during the process of attaching the first end plate 22 to the instrument body 21, simplifying parts management and reducing management costs. Furthermore, by providing the correcting piece 2262 and the correcting protrusion 2264, the function of correcting the inclination angle α can be achieved in both cases, where there is an air conditioning return with a return path, and where there is no air conditioning return with no return path.

[0068] The inclination angle α of the inclined portion 213 is determined by inserting the main body side fixing piece 2133 provided on the folded portion 2132 of the inclined portion 213 into the end plate side fixing hole 2262a of the first end plate 22. Therefore, precision is not required for the inclination angle α of the inclined portion 213, and the processing costs of the part can be reduced. Furthermore, the inclination angle α of the inclined portion 213 can be determined by the simple process of bending and inserting, without using fixing members such as screws.

[0069] Furthermore, since both the main body side fixing piece 2133 and the end plate side fixing piece 225 are bent in the direction of the irradiation area, the bending direction of the fixing pieces that function as claw portions is unified, which contributes to reducing assembly processing costs.

[0070] In addition, a holding hole 2411 is formed in the blindfold portion 24, into which the holding piece 2263 of the correction portion 226 is inserted, and the blindfold portion 24 can be held on the first end plate 22 by a simple insertion operation without using fixing members such as screws.

[0071] Furthermore, the holding piece 2263 of the correcting portion 226 is bent while inserted into the slit of the blinding portion 24. Therefore, the blinding portion 24 can be held and fastened to the first end plate 22 by the simple process of inserting and bending, without using any fixing members such as screws.

[0072] Furthermore, by clamping the side wall portion 212 of the instrument body 21 between the mounting guide 227 of the first end plate 22, the first end plate 22 can be guided to a predetermined position in the longitudinal direction of the instrument body 21, and the spacing dimension W1 between the pair of side wall portions 212 can be corrected to a predetermined dimension.

[0073] Furthermore, since the width dimension W2 of the top panel portion 211 is smaller than the spacing dimension W1 of the mounting guide 227, the side wall portion 212 is corrected so as not to expand, and the width dimension W3 of the side wall portion 212 can be prevented from becoming larger than a specified value, for example, 65 mm.

[0074] Furthermore, since the mounting guide 227 is plate-shaped and extends in a direction parallel to the top plate portion 211, a force acts from the side wall portion 212 in a direction perpendicular to the plate thickness direction of the mounting guide 227, thereby preventing deformation of the mounting guide 227.

[0075] Furthermore, the key portion 2271 of the mounting guide 227 fits into the groove portion 2121 of the side wall portion 212, thereby preventing the first end plate 22 from coming off the instrument body 21.

[0076] Embodiment 2 Fig. 16 is a partial perspective view of lighting device 1 according to embodiment 2 of the present disclosure. Fig. 17 is a partial side view of lighting device 1 according to embodiment 2 of the present disclosure. Embodiment 2 differs from embodiment 1 in the configurations of correcting portion 226 and inclined portion 213. In embodiment 2, parts common to embodiment 1 are assigned the same reference numerals and description thereof will be omitted, and the description will focus on the differences from embodiment 1.

[0077] As shown in Figures 16 and 17, the inclination angle α of the inclined portion 213 is corrected and determined by fitting the fitting piece 2262c of the correcting portion 226 into the fitting portion 213a formed in the inclined portion 213.

[0078] Fitting portion 213a is a cavity along the X direction formed by rising portion 2131, folded portion 2132, and hanging portion 2134. Hanging portion 2134 is a portion extending from the inner end of folded portion 2132 in the Y direction toward the irradiation area. Fitting piece 2262c is configured by a part of correction piece 2262, and is formed by cut 2262b that is open on the inside in the X direction.

[0079] When the first end plate 22 is positioned and butted against the end of the instrument body 21 in the X direction, the fitting piece 2262c provided on the correction portion 226 is inserted and fitted into the fitting portion 213a of the instrument body 21. This completes the correction and determination of the inclination angle α of the inclined portion 213, so that the inclination angle α of the inclined portion 213 can be determined by the simple operation of fitting or inserting without using a fixing member such as a screw. Furthermore, the fitting direction coincides with the direction in which the first end plate 22 is butted against the instrument body 21, and the "bending" step in the first embodiment is unnecessary, further simplifying the assembly work and making it easier to automate the assembly work.

[0080] <Modification> Fig. 18 is a partial perspective view of lighting device 1 according to a modified example of embodiment 2 of the present disclosure. Fig. 19 is a partial side view of lighting device 1 according to a modified example of embodiment 2 of the present disclosure. As shown in Figs. 18 and 19, inclination angle α of inclined portion 213 is corrected and determined by folding portion 2132 of inclined portion 213 meshing and engaging with fitting piece 2262c of correcting portion 226.

[0081] The folded portion 2132 is composed of a base end portion that is continuous with the upper end of the rising portion 2131, and a tip end portion that extends from the base end inward in the Y direction and toward the irradiation area. The base end portion of the folded portion 2132 is located above the correcting piece 2262, and the tip end portion is located below the correcting piece 2262, so that the folded portion 2132 meshes with and engages with the fitting piece 2262c, thereby correcting and determining the inclination angle α of the correcting portion 226.

[0082] The configuration in which the folded portion 2132 engages with the fitting piece 2262c reduces the number of times the device body 21 is bent, making it possible to reduce the cost of the bending process, and also simplifies the bending process because the cross-sectional shape of the device body 21 is simplified. Furthermore, the reduction in the cross-sectional area of the device body 21 makes it possible to improve the efficiency of use of the material required for the device body 21 and reduce material costs.

[0083] In the lighting device 1 according to the second embodiment described above, when the first end plate 22 is positioned at and butted against the end of the fixture body 21 in the X direction, the fitting piece 2262c provided on the correction portion 226 is inserted and fitted into the fitting portion 213a of the fixture body 21. This completes the correction and determination of the inclination angle α of the inclined portion 213, and the inclination angle α of the inclined portion 213 can be determined by the simple operation of fitting or inserting without using a fixing member such as a screw. Furthermore, the fitting direction coincides with the direction in which the first end plate 22 is butted against the fixture body 21, and the "bending" step in the first embodiment is unnecessary. This further simplifies the assembly process and makes it easier to automate the assembly process.

[0084] The first and second embodiments can be combined as appropriate.

[0085] Various aspects of the present disclosure are summarized below as appendices.

[0086] (Appendix 1) a lighting fixture that emits light to an illumination area; a fixture having an elongated shape, installed on a mounting portion on the opposite side of the illumination area, and to which the lighting fixture is attached; Equipped with The device comprises: a fixture body including a mounting portion to which the lighting fixture is mounted, and inclined portions extending from both longitudinal ends of the mounting portion toward the illumination area and inclined relative to the mounting portion; an end plate disposed at an end of the mounting portion in the longitudinal direction and covering the end; Equipped with The end plate is an end plate-side fixing piece provided so as to extend from an end of the attached portion toward the mounting portion and fixed to the mounting portion; a correction part provided at an end part on the irradiation area side, the correction part contacting the inclined part when the end plate side fixing piece is fixed to the mounting part, and correcting an inclination angle of the inclined part with respect to the mounting part; have Lighting equipment. (Appendix 2) The mounting portion is formed with a main body side fixing hole into which the end plate side fixing piece is inserted and fixed, The end plate is integrated with the instrument body by inserting the end plate side fixing piece into the body side fixing hole. 10. The lighting device of claim 1. (Appendix 3) The end plate side fixing piece of the end plate is The attachment portion is bent toward the attachment portion of the instrument body, inserted into the body-side fixing hole of the instrument body, and folded into the body-side fixing hole. 10. The lighting device of claim 2. (Appendix 4) a rising portion extending from an end portion of the inclined portion along the longitudinal direction toward the attached portion; a folded portion extending inward in a short direction from an end of the rising portion on the attached portion side; and The correction unit is a connecting portion extending from an end portion of the end plate on the side of the irradiation area toward the irradiation area; a correcting piece extending outward in the short side direction from an end of the connecting portion on the irradiation area side; a corrective protrusion protruding from an end of the connecting portion on the irradiation area side toward the irradiation area; and The correction piece comes into contact with a surface of the folded portion on the irradiation area side, or the correction protrusion comes into contact with a surface of the inclined portion on the attached portion side, thereby correcting the inclination angle of the inclined portion. 4. The lighting device according to claim 1, wherein the first light source is a light source. (Appendix 5) a main body side fixing piece that is fixed to the correcting piece of the end plate is formed on the folded portion of the inclined portion, An end plate side fixing hole is formed in the correction piece of the end plate, The inclination angle of the inclined portion is determined by inserting the main body side fixing piece into the end plate side fixing hole. 5. The lighting device of claim 4. (Appendix 6) Both the main body side fixing piece and the end plate side fixing piece are bent toward the irradiation area when the end plate is fixed to the instrument main body. 6. The lighting device of claim 5. (Appendix 7) The correction piece has an insertion piece formed by a cut that opens to the inside in the longitudinal direction, The fitting piece is fitted into a fitting portion formed by the rising portion and the folded portion of the inclined portion, thereby correcting the inclination angle of the inclined portion. 5. The lighting device of claim 4. (Appendix 8) Further provided is a blindfold portion that covers the inclined portion from the outside in the short side direction, the correcting portion has a holding piece that protrudes toward the attached portion from an end of the connecting portion that is closer to the attached portion, The blindfold is held by inserting the holding piece of the correction part into a holding hole formed in a slit shape in the blindfold. 10. The lighting device of claim 6. (Appendix 9) The holding piece of the correction part is The blindfold is inserted into the retaining hole of the blindfold and bent. 10. The lighting device of claim 8. (Appendix 10) The mounting portion is a top plate portion extending in the longitudinal direction of the device body; a pair of sidewall portions extending from both ends of the top plate portion in the longitudinal direction toward the irradiation area; and The end plate is a pair of mounting guides extending in the direction of the instrument body; The pair of side walls of the mounting portion are sandwiched between the pair of mounting guides. 10. The lighting device according to any one of claims 1 to 9. (Appendix 11) The width dimension of the top plate portion in the short direction is The distance between the pair of mounting guides is smaller than the distance between the pair of mounting guides. 11. The lighting device of claim 10. (Appendix 12) The pair of mounting guides are plate-shaped and extend in a direction parallel to the top plate portion. 12. The lighting device according to claim 10 or 11. (Appendix 13) The pair of mounting guides are provided with key portions that protrude in directions approaching each other, The pair of side walls are formed with grooves into which the key portions of the pair of mounting guides fit. 13. The lighting device according to any one of claims 10 to 12. [Explanation of symbols]

[0087] 1 lighting device, 2 lighting fixture, 3 lighting fixture, 4 light source unit, 9 bar member, 21 fixture body, 22 first end plate, 23 second end plate, 24 blind portion, 50 holding mechanism, 51 fixed portion, 52 elastic portion, 53 movable portion, 54 restricting portion, 54a notch, 211 top plate portion, 212 side wall portion, 213 inclined portion, 213a fitting portion, 214 connecting spring, 221 first end plate body, 222 end plate side portion, 223 first upper flange portion, 224 first lower flange portion, 224a opening, 225 end plate side fixing piece, 225a bending portion, 226 correction portion, 227 mounting guide, 231 second end plate body, 232 second upper flange portion, 232a end plate claw portion, 233 second lower flange portion, 241 Horizontal portion, 242 cover portion, 511 fixing screw, 2111 top plate slit, 2112 insertion hole, 2113 main body side fixing hole, 2121 groove portion, 2131 rising portion, 2132 folded portion, 2133 main body side fixing piece, 2134 hanging portion, 2261 connection portion, 2262 correction piece, 2262a end plate side fixing hole, 2262b notch, 2262c insertion piece, 2263 holding piece, 2264 correcting protrusion, 2271 key portion, 2411 holding hole.

Claims

1. a lighting fixture that emits light to an illumination area; a fixture having an elongated shape, installed on a mounting portion on the opposite side of the illumination area, and to which the lighting fixture is attached; Equipped with The device comprises: a fixture body including a mounting portion to which the lighting fixture is mounted, and inclined portions extending from both longitudinal ends of the mounting portion toward the illumination area and inclined relative to the mounting portion; an end plate disposed at an end of the mounting portion in the longitudinal direction and covering the end; Equipped with The end plate is an end plate-side fixing piece provided so as to extend from an end of the attached portion toward the mounting portion and fixed to the mounting portion; a correction part provided at an end part on the irradiation area side, the correction part contacting the inclined part when the end plate side fixing piece is fixed to the mounting part, and correcting an inclination angle of the inclined part with respect to the mounting part; have Lighting equipment.

2. The mounting portion has a main body side fixing hole into which the end plate side fixing piece is inserted and fixed, The end plate is integrated with the instrument body by inserting the end plate side fixing piece into the body side fixing hole. The lighting device according to claim 1 .

3. The end plate side fixing piece of the end plate is The attachment portion is bent toward the attachment portion of the instrument body, inserted into the body-side fixing hole of the instrument body, and folded into the body-side fixing hole.

3. The lighting device according to claim 2.

4. a rising portion extending from an end portion of the inclined portion along the longitudinal direction toward the attached portion; a folded portion extending inward in a short direction from an end of the rising portion on the attached portion side; and The correction unit is a connecting portion extending from an end portion of the end plate on the side of the irradiation area toward the irradiation area; a correcting piece extending outward in the short side direction from an end of the connecting portion on the irradiation area side; a corrective protrusion protruding from an end of the connecting portion on the irradiation area side toward the irradiation area; and The correction piece comes into contact with a surface of the folded portion on the irradiation area side, or the correction protrusion comes into contact with a surface of the inclined portion on the attached portion side, thereby correcting the inclination angle of the inclined portion. The lighting device according to claim 1 .

5. a main body side fixing piece that is fixed to the correcting piece of the end plate is formed on the folded portion of the inclined portion, An end plate side fixing hole is formed in the correction piece of the end plate, The inclination angle of the inclined portion is determined by inserting the main body side fixing piece into the end plate side fixing hole.

5. The lighting device according to claim 4.

6. Both the main body side fixing piece and the end plate side fixing piece are bent toward the irradiation area when the end plate is fixed to the instrument main body.

6. The lighting device according to claim 5.

7. The correction piece has an insertion piece formed by a cut that opens to the inside in the longitudinal direction, The fitting piece is fitted into a fitting portion formed by the rising portion and the folded portion of the inclined portion, thereby correcting the inclination angle of the inclined portion.

5. The lighting device according to claim 4.

8. Further provided is a blindfold portion that covers the inclined portion from the outside in the short side direction, the correcting portion has a holding piece that protrudes toward the attached portion from an end of the connecting portion that is closer to the attached portion, The blindfold is held by inserting the holding piece of the correction part into a holding hole formed in a slit shape in the blindfold.

7. The lighting device according to claim 6.

9. The holding piece of the correction part is The blindfold is inserted into the retaining hole of the blindfold and bent.

9. The lighting device according to claim 8.

10. The mounting portion is a top plate portion extending in the longitudinal direction of the device body; a pair of sidewall portions extending from both ends of the top plate portion in the longitudinal direction toward the irradiation area; and The end plate is a pair of mounting guides extending in the direction of the instrument body; The pair of side walls of the mounting portion are sandwiched between the pair of mounting guides. The lighting device according to claim 1 .

11. The width dimension of the top plate portion in the short direction is The distance between the pair of mounting guides is smaller than the distance between the pair of mounting guides.

11. The lighting device according to claim 10.

12. The pair of mounting guides are plate-shaped and extend in a direction parallel to the top plate portion.

11. The lighting device according to claim 10.

13. The pair of mounting guides are provided with key portions that protrude in directions approaching each other, The pair of side walls are formed with grooves into which the key portions of the pair of mounting guides fit.

11. The lighting device according to claim 10.

Images