JP2024142369A - Lighting equipment - Google Patents

Abstract

A lighting device that can be easily assembled is provided.
[Solution] The lighting device includes a long fixture body 20, a long light source unit attached to the fixture body 20, an attachment receiver 33 provided on the fixture body 20, and an attachment portion 23 attached to the attachment receiver 33 and used for attaching the light source unit to the fixture body 20. The attachment portion 23 is attached by sliding in the longitudinal direction of the fixture body 20 relative to the attachment receiver 33 from the light source attachment side of the fixture body 20 where the light source unit is attached.
[Selected Figure] Figure 6

Description

An embodiment of the present invention relates to a lighting device.

Conventionally, there is a lighting device that includes a long fixture body and a long light source unit that is attached to the fixture body.

In this lighting device, the mounting section used to attach the light source unit to the fixture body is attached to the fixture body. The mounting section is attached using bolts and nuts from both the back side (opposite the light source side) and the front side (light source side) of the fixture body, and the fixture body must be turned over each time the installation work is performed. In addition, other components such as a terminal block are attached from the front side of the fixture body, but if the mounting section needs to be attached to the other components from the back side of the fixture body, the fixture body must be turned over for the work. For these reasons, assembling the lighting device is time-consuming.

JP 2022-143361 A

The problem that this invention aims to solve is to provide a lighting device that can be easily assembled.

The lighting device of the embodiment includes a long fixture body, a long light source unit attached to the fixture body, an attachment receiver provided on the fixture body, and an attachment part attached to the attachment receiver and used to attach the light source unit to the fixture body. The attachment part is attached to the fixture body from the light source attachment side where the light source unit is attached by sliding it in the longitudinal direction of the fixture body relative to the attachment receiver.

The lighting device of the embodiment is expected to improve ease of assembly.

1 is a perspective view of an illumination device showing an embodiment. FIG. FIG. FIG. 2 is an exploded perspective view of a fixture body and a mounting structure of the lighting device. FIG. 5A to 5C are perspective views showing a mounting procedure of the mounting portion of the lighting device.

An embodiment will be described below with reference to the drawings.

The lighting device 10 is shown in Figs. 1 to 3. The lighting device 10 is a semi-recessed lighting device in which a non-light-emitting part is recessed in a recessed opening provided in an installation part such as a ceiling surface, and a light-emitting part protrudes from the installation part. The lighting device 10 is a slim lighting device formed to be long and whose width dimension in the width direction, which is the short side direction intersecting the longitudinal direction, is smaller than its height dimension in the height direction. Note that in this embodiment, the lighting device 10 is attached to the ceiling surface, and in accordance with this installation posture, the front side of the lighting device 10 in the light irradiation direction is described as the bottom, and the back side opposite to the light irradiation direction is described as the top.

The lighting device 10 comprises a main unit 11 and a light source unit 12 that is detachably attached to the underside of the main unit 11, which is the light source attachment side.

The main unit 11 includes a long metal fixture body 20 that is a metal housing, a terminal block 21 that is arranged inside the fixture body 20, a pair of mounting springs 22 for removably mounting the light source unit 12 to the fixture body 20, a pair of mounting parts 23 that attach each mounting spring 22 to the fixture body 20, and end members 24 at both ends that are attached to both longitudinal ends of the fixture body 20.

The appliance body 20 is shown in Figures 1 to 5. The appliance body 20 has a long top plate portion 26, side plate portions 27 on both sides protruding downward from both sides in the width direction of the top plate portion 26, and edge portions 28 protruding outward from the lower ends of the side plate portions 27 on both sides. The appliance body 20 is formed into a substantially U-shaped cross section by the top plate portion 26 and the side plate portions 27 on both sides, and a bottom surface opening 29, which is a front opening, is provided on the bottom surface, and end surface openings 30 are provided on the end surfaces of both ends.

A wiring hole 31 is provided at one longitudinal end of the top plate 26, through which a power supply line can be inserted.

Near both ends of the top plate 26 in the longitudinal direction, there are provided installation holes 32 for attachment to a pair of hanging bolts installed in the ceiling structure. The installation holes 32 are provided in the shape of long elongated holes along the longitudinal direction of the top plate 26.

A pair of mounting receivers 33 to which the mounting parts 23 are attached are provided near both ends of the top plate 26 in the longitudinal direction and closer to the center of the fixture body 20 than the installation holes 32. In this embodiment, the pair of mounting receivers 33 are integrally provided on the fixture body 20. Note that the mounting receivers 33 may be formed separately from the fixture body 20 and attached to the underside of the top plate 26.

Each mounting receiving portion 33 has a pair of mounting grooves 34 arranged side by side in the width direction of the top plate portion 26, and a pair of engaged portions 35 arranged at the outer positions in the width direction of the pair of mounting grooves 34.

Each mounting groove 34 is formed in a roughly L-shape, with a long slide groove section 36 along the longitudinal direction of the instrument body 20, and an insertion groove section 37 at one end of the slide groove section 36, the groove width of which is wider outward in the width direction of the top plate section 26 than the slide groove section 36.

The length of the slide groove portion 36 in the longitudinal direction of the instrument body 20 is longer than or equal to the length of the mounting portion 23. In addition, the length of the insertion groove portion 37 in the longitudinal direction of the instrument body 20 is shorter than the length of the mounting portion 23.

A step occurs between the slide groove portion 36 and the insertion groove portion 37 due to the difference in groove width in the width direction. At the step position between the slide groove portion 36 and the insertion groove portion 37 where the groove width in the width direction is different, a notch portion 38 is provided in a shape in which the corner of the step position is cut out. The notch portion 38 is formed as an inclined portion that is inclined at an angle of, for example, 45° with respect to the longitudinal direction of the slide groove portion 36, but may also be formed as an arc-shaped portion.

Each engaged portion 35 is provided at the outer side of each slide groove portion 36 of the top plate portion 26 in the width direction. Each engaged portion 35 has an attachment hole 39.

The pair of mounting receivers 33 are provided at two locations on the longitudinal direction of the instrument body 20, and the insertion grooves 37 on one end are positioned toward the center of the instrument body 20 and are provided facing in opposite directions so as to face each other.

As shown in FIG. 2, the terminal block 21 is attached to the underside of the top plate 26 at the end of the fixture body 20 opposite the end where the wiring hole 31 is provided. The terminal block 21 is positioned by inserting a plurality of positioning protrusions 40 protruding from the rear side of the terminal block 21 into positioning holes provided in the top plate 26, and is attached to the top plate 26 with a screw that passes through the terminal block 21. A power line that is drawn into the fixture body 20 is connected to the terminal block 21. A wire with a connector for supplying power to the light source unit 12 is connected to the terminal block 21.

As shown in Figs. 4 and 5, the mounting spring 22 is integrally formed from a metal leaf spring. The mounting spring 22 has a fixed portion 42 attached to the mounting portion 23, and a pair of arm portions 43 bent diagonally downward from opposite sides of one of the fixed portions 42 so that the tip sides spread apart from each other, and is formed to have a substantially U-shaped cross section. The mounting spring 22 is attached to the mounting portion 23 so that the pair of arm portions 43 are arranged in the width direction of the instrument body 20.

The tip ends of the pair of arm parts 43 have positioning parts 44 bent so as to protrude opposite each other, holding parts 45 bent diagonally downward so as to approach each other on the tip side of the arm parts 43 from the positioning parts 44, and inclined parts 46 bent diagonally downward from the tip side of the holding parts 45 so as to move away from each other. The tip side of the inclined parts 46 is bent so as to fold back on the outer surface side of the inclined parts 46. The fixing part 42 has an attachment hole 47 for attachment to the attachment part 23.

The mounting portion 23 is made of metal and is formed as a single unit. The mounting portion 23 includes a base portion 49, a pair of rising portions 50 that are bent and raised from both sides of the base portion 49, a pair of engagement portions 51 that are bent and protruded from the pair of rising portions 50 toward the outside opposite the base portion 49, and a rotation prevention portion 52 that is bent and protruded from a side of the base portion 49 that is different from the pair of rising portions 50 in the opposite direction to the rising portions 50.

The base portion 49 has a mounting hole 54 for mounting the mounting spring 22 with a screw 53. The engagement portion 51 has a mounting hole 56 for mounting to the fixture body 20 with a screw 55. The screw 55 is attached from the light source mounting side of the fixture body 20 where the light source unit 12 is attached, from the bottom opening 29 side.

The distance between the pair of rising portions 50 is set to a dimension that allows the pair of sliding grooves 36 of the mounting receiver 33 to be slidably inserted. The protruding width of the engagement portion 51 protruding from the rising portions 50 is wider than the widthwise groove width of the sliding grooves 36 and narrower than the widthwise groove width of the insertion grooves 37. The length of the engagement portion 51 in the longitudinal direction of the instrument body 20 is shorter than or equal to the length of the sliding grooves 36 and shorter than the length of the insertion grooves 37.

The anti-rotation portion 52 prevents the mounting spring 22, which is attached to the base portion 49 by a single screw 53, from rotating around the screw 53 and becoming misaligned.

As shown in Figs. 1 to 4, the end member 24 is integrally formed from, for example, resin. The end member 24 has an end surface portion 58 arranged on the end surface side of the fixture body 20, an edge portion 59 protruding from the lower end of the outer surface side of the end surface portion 58 facing the outside of the fixture body 20 and arranged on the end side of the edge portion 28 of the fixture body 20, an attachment portion 60 detachably attached to the end of the fixture body 20, and a holding portion 61 that holds the light source unit 12 attached to the fixture body 20.

The end surface portion 58 is narrow at the top and widens toward the bottom, and is wider than the width between the side plate portions 27 on both sides of the instrument body 20 at the bottom end. The edge portion 59 is the same width as the width between the outermost portions of the edge portions 28 on both sides of the instrument body 20, and is configured to be continuous with the edge portions 28 on both sides and to form a frame around the instrument body 20. The mounting portion 60 includes a first mounting portion 62 that is attached to the top plate portion 26 of the instrument body 20 on the upper side of the end surface portion 58, and a second mounting portion 63 that is attached to the side plate portions 27 and edge portions 28 on both sides of the instrument body 20. The holding portion 61 is provided with a cross section that is approximately U-shaped, forming a groove that opens downward and in the width direction between the inner side of the end surface portion 58 and the holding portion 61.

Next, the light source unit 12 is shown in Figures 1 to 3 and 5. The light source unit 12 includes a cover 70 which is a resin housing, a light source holding section 71 which is attached inside the cover 70, a light source module 72 which is a light source attached to the underside of the light source holding section 71, and a power supply section 73, a spring receiving member (spring receiving metal fitting) 74, and a plurality of correction metal fittings 75 which are attached to the upper side of the light source holding section 71.

The cover 70 is made of resin and is long, and is formed with an external shape in which the width dimension in the width direction intersecting the longitudinal direction is smaller than the height dimension in the height direction. The cover 70 has a front surface portion 77 on the lower surface side, side surface portions 78 on both sides in the width direction, and end surface portions 79 on both ends in the longitudinal direction, and an opening portion 80 is formed on the upper surface side. Therefore, the cover 70 is formed with a cross section that is approximately U-shaped in both the longitudinal and width directions.

The lower sides of the front surface 77, side surface 78, and end surface 79 of the cover 70 are formed as translucent sections 81 through which light from the light source module 72 passes, and the upper sides of the side surface 78 and end surface 79 of the cover 70 are formed as opaque sections 82 through which light does not pass. The translucent section 81 and the opaque section 82 of the cover 70 are integrally formed by two-color molding using different resin materials.

The widthwise dimension between the outer surfaces of the side portions 78 on both sides of the cover 70 is narrower than the widthwise dimension between the inner surfaces of the side plate portions 27 of the instrument body 20, and the longitudinal dimension between the outer surfaces of the end surface portions 79 at both ends of the cover 70 is shorter than the longitudinal dimension between the inner surfaces of the end surface portions 58 of the end members 24 attached to both ends of the instrument body 20, so that the upper side of the cover 70 is configured in a dimensional relationship that allows it to be inserted into the lower openings 29 that open between the instrument body 20 and the end surface portions 58 of the end members 24 at both ends.

A light source attachment section 83 for attaching the light source holder 71 is provided on the inner surface of the side section 78 on both sides of the cover 70, below the opaque section 82. A correction fitting engagement section 84 for engaging with the correction fitting 75 is formed between the light source attachment section 83 and the upper end of the side section 78 on both sides of the cover 70.

The light source holding part 71 is made of, for example, metal and is formed into a long plate shape. The light source holding part 71 is disposed inside the cover 70 with both sides in the width direction attached to the light source attachment parts 83 on both sides.

The light source module 72 is attached to the underside of the light source holding part 71. A roughly L-shaped support part 85 that supports one side of the light source module 72 in the width direction is provided on one side of the underside of the light source holding part 71 in the width direction. A plurality of screws 86 for screwing the other side of the light source module 72 in the width direction are screwed into the other side of the underside of the light source holding part 71 in the width direction. The screws 86 are shoulder screws. The support part 85 and the plurality of screws 86 do not fix the light source module 72, but support it so as to allow the light source module 72 to move within a range that can be supported.

The end surface portion 79 is provided with a generally U-shaped opening groove 87 that opens to the upper end side. The opening groove 87 is provided in the opaque portion 82 above the light source holding portion 71 that is disposed inside the cover 70. The portion of the end surface portion 79 below the opening groove 87 is inserted into the groove between the end surface portion 58 of the end member 24 and the holding portion 61.

The light source module 72 also has a long substrate 89 and a number of light emitting elements 90 mounted on the front side of the substrate 89 at a predetermined interval along the longitudinal direction. The light emitting elements 90 are semiconductor light emitting elements such as LEDs and organic EL. Both sides of the substrate 89 in the width direction are attached to the underside of the light source holding part 71 by supports 85 and screws 86.

As shown in FIG. 3, the power supply unit 73 is attached to the upper surface side of the light source holding unit 71 by screwing. The power supply unit 73 is disposed inside the cover 70. The power supply unit 73 converts external power supplied from the outside via a power line into lighting power required to light the light emitting element 90 of the light source module 72 and supplies it to the light source module 72. A wire with a connector is connected to the power supply unit 73, and the wire with a connector of this power supply unit 73 and the wire with a connector of the terminal block 21 of the fixture body 20 are connected by a connector.

As shown in Figs. 4 and 5, the spring receiving member 74 is integrally formed from a metal plate. The spring receiving member 74 has a substantially rectangular spring receiving plate portion 92 and a pair of mounting plate portions 93 bent downward from one of the opposing side portions of the spring receiving plate portion 92. The other opposing side portion of the spring receiving plate portion 92 has a pair of notched spring receiving grooves 94 in the central region in the width direction of the both sides. The mounting plate portion 93 is attached to the upper surface side of the light source holding portion 71 by screwing. The spring receiving member 74 is attached to the light source holding portion 71 so that the pair of spring receiving grooves 94 are arranged in the width direction of the fixture body 20.

The correction fitting 75 is made of a metal plate and is formed with a generally U-shaped cross section. The correction fitting 75 is attached by screwing to the upper surface of the light source holding part 71 with both ends engaged with the correction fitting engagement parts 84 provided on the side parts 78 on both sides of the cover 70. The correction fitting 75 is attached to multiple points in the longitudinal direction of the cover 70, and is configured to prevent the gap between the side parts 78 on both sides of the cover 70 from widening and to maintain the attached state of the cover 70 and the light source holding part 71.

The procedure for attaching the mounting portion 23 to the fixture body 20 will now be described with reference to Figure 6. The mounting portion 23 is attached from the light source mounting side of the fixture body 20 where the light source unit 12 is attached, from the bottom opening 29 side. Figure 6 shows the fixture body 20 in a state where the inner surface side of the top plate portion 26 is positioned facing upward.

As shown in FIG. 6(a), with the mounting portion 23 tilted relative to the inner surface of the top plate portion 26 of the instrument body 20, one end side of the pair of engagement portions 51 of the mounting portion 23 is inserted into the pair of insertion groove portions 37.

As shown in FIG. 6(b), one end of the engaging portion 51 of the mounting portion 23 inserted into the insertion groove 37 is inserted from the inner surface side of the top plate portion 26 to the opposite outer surface side, and moved to the area on the outer surface side of the engaged portion 35.

At this time, if there is a step between the slide groove portion 36 and the insertion groove portion 37, which have different groove widths in the width direction, and if there is no notch portion 38 at the step position and a corner exists, the engaging portion 51 will get caught on the corner, and the mounting portion 23 cannot be attached unless the inclination angle of the mounting portion 23 relative to the inner surface of the top plate portion 26 is increased, which reduces the workability of attaching the mounting portion 23. In this embodiment, a notch portion 38 is provided in a shape that cuts out the corner at the step position, so the mounting portion 23 can be attached without the engaging portion 51 getting caught on the engaging portion 51, even if the inclination angle of the mounting portion 23 is not increased.

As shown in FIG. 6(c), the other end of the engagement portion 51 of the mounting portion 23 is passed through the insertion groove portion 37, and the mounting portion 23 is moved into the slide groove portion 36.

In this state, the screw 55 is screwed from the light source mounting side of the fixture body 20 where the light source unit 12 is mounted, from the bottom opening 29 side, through the mounting hole 39 of the engaged part 35 into the mounting hole 56 of the engaging part 51, and the mounting part 23 is attached to the fixture body 20.

In FIG. 6, the mounting spring 22 is not attached to the mounting portion 23, but the mounting portion 23 may be attached to the instrument body 20 with the mounting spring 22 attached to the mounting portion 23 by the screw 53, or the mounting spring 22 may be attached to the mounting portion 23 by the screw 53 after the mounting portion 23 is attached to the instrument body 20.

The mounting spring 22 is attached to the instrument body 20 by the mounting portion 23, and is positioned so that the pair of arms 43 face in the width direction of the instrument body 20.

When assembling the main unit 11, the underside opening 29, which is the light source mounting side of the fixture body 20, can be faced upward, and the above-mentioned mounting portion 23, the terminal block 21, and the wiring of the connector-equipped wire connected to the terminal block 21 can be performed only from the light source mounting side of the fixture body 20 without turning the fixture body 20 over.

To install the lighting device 10, the power cord is pulled out from the recessed opening in the ceiling surface and into the fixture body 20 through the wiring hole 31 in the fixture body 20.

The fixture body 20 is inserted from the top into the recessed opening in the ceiling surface, a pair of hanging bolts protruding from the ceiling structure above the ceiling surface are passed through a pair of installation holes 32 in the fixture body 20, and nuts are screwed onto the hanging bolts to attach the fixture body 20 to the ceiling surface. By tightening the nuts, the edge 28 of the fixture body 20 and the edge 59 of the end member 24 are attached in contact with the ceiling surface. The power cord passed through the wiring hole 31 is connected to the terminal block 21.

While lifting the light source unit 12, connect the connector-equipped wire connected to the terminal block 21 from the fixture body 20 side to the connector-equipped wire connected to the power supply unit 73 from the light source unit 12 side.

The light source unit 12 is pushed up toward the fixture body 20 so that the cover 70 of the light source unit 12 is inserted into the bottom opening 29 between the side plate portions 27 on both sides of the fixture body 20 and between the end surface portions 58 of the end members 24 at both ends. By pushing the light source unit 12 up toward the fixture body 20, the mounting spring 22 on the fixture body 20 side and the spring receiving member 74 on the light source unit 12 side are engaged. The pair of arm portions 43 of the mounting spring 22 engage with the pair of spring receiving grooves 94 of the spring receiving member 74, the positioning portion 44 of the mounting spring 22 abuts against the upper surface of the spring receiving plate portion 92 of the spring receiving member 74, and the holding portion 45 of the mounting spring 22 engages with the lower surface side of the spring receiving plate portion 92 of the spring receiving member 74, and the mounting spring 22 is attached to the spring receiving member 74. The light source unit 12 is attached to the fixture body 20 by the engagement between the mounting spring 22 and the spring receiving member 74.

In this way, the opaque portion 82 of the cover 70 is disposed within the fixture body 20, the translucent portion 81 protrudes from the fixture body 20, and the lighting device 10 is installed in a semi-recessed state in the ceiling surface.

When external power is supplied to the power supply unit 73, the power supply unit 73 converts the external power into a predetermined lighting power and supplies it to the light source module 72, causing the light-emitting element 90 of the light source module 72 to light up. The light from the light-emitting element 90 passes through the light-transmitting portion 81 of the cover 70 and is emitted to the outside. The heat generated by the light-emitting element 90 when it is turned on is transferred to the metal light source holding portion 71 and dissipated.

When removing the light source unit 12 from the fixture body 20, the cover 70 of the light source unit 12 is grasped and pulled downward, and the spring receiving member 74 is disengaged from the mounting spring 22, causing the light source unit 12 to be removed downward from the fixture body 20.

In the lighting device 10 of the embodiment, the mounting portion 23 can be attached to the mounting receiving portion 33 of the fixture body 20 by sliding it in the longitudinal direction of the fixture body 20 from the light source mounting side where the light source unit 12 of the fixture body 20 is attached. This means that, like parts such as the terminal block 21, it can be attached from the light source mounting side of the fixture body 20, improving assembly.

In addition, the mounting receivers 33 and the mounting parts 23 are arranged in pairs in the longitudinal direction of the fixture body 20, and the pair of mounting parts 23 are attached to the pair of mounting receivers 33 by sliding them toward each other in the longitudinal direction of the fixture body 20. This prevents the pair of mounting parts 23 from coming off the pair of mounting receivers 33 even if the light source unit 12 moves in one direction or the other in the longitudinal direction relative to the fixture body 20.

In this case, by configuring the fixture body 20 to be attached by sliding it toward each other in the longitudinal direction, the mounting portion 23 can be separated from the hanging bolt inserted into the installation hole 32 and the nut screwed onto the hanging bolt, improving the ease of installation of the fixture body 20.

In addition, the mounting portion 23 may be configured to be attached by sliding in directions away from each other along the longitudinal direction of the device body 20, so that the mounting portion 23 can be secured in a positional relationship with the terminal block 21 and other components attached to the device body 20.

In addition, the mounting receiving portion 33 has a notch 38 formed by cutting out a corner at the step position between the slide groove portion 36 and the insertion groove portion 37, which have different groove widths in the width direction. This prevents the engaging portion 51 from getting caught on the engaging portion 51, even if the inclination angle of the mounting portion 23 is not large, improving the workability of mounting the mounting portion 23.

In addition, in the attachment receiving portion 33, the length of the insertion groove portion 37 in the longitudinal direction of the instrument body 20 is set to a dimension shorter than the dimension of the attachment portion 23, so that the opening area can be made smaller and the reduction in strength of the instrument body 20 can be reduced compared to when the length of the insertion groove portion 37 is set to a dimension longer than the attachment portion 23 so that the attachment portion 23 can be inserted from the vertical direction of the top plate portion 26.

The mounting receiver 33 may have a rectangular mounting opening on the top plate 26, and a pair of engaged parts 35 on both sides of the mounting opening in the longitudinal direction of the instrument body 20. Meanwhile, the mounting part 23 may be oriented so that the pair of engaging parts 51 face the longitudinal direction of the instrument body 20. One engaging part 51 may be inserted into the mounting opening and moved to one side, and the other engaging part 51 may be inserted into the mounting opening and moved to the other side, and the pair of engaging parts 51 may be attached to the pair of engaged parts 35.

Alternatively, the mounting spring 22 may be disposed on the light source unit 12 side, and the spring receiving member 74 may be disposed on the fixture body 20 side. In this case, the spring receiving member 74 serves as the mounting portion 23, and the spring receiving member 74 may be attached by sliding it in the longitudinal direction of the fixture body 20.

The lighting device 10 is not limited to a semi-recessed lighting device that is semi-recessed into the recessed opening of the installation target, but may be a direct-attached lighting device that is directly attached to the surface of the installation target.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

REFERENCE SIGNS LIST 10 Illumination device 12 Light source unit 20 Fixture body 23 Mounting portion 33 Mounting receiving portion 36 Slide groove portion 37 Insertion groove portion 38 Notch portion 49 Base portion 50 Rising portion 51 Engagement portion

Claims (3)

A long instrument body;
A long light source unit attached to the device body;
An attachment receiving portion provided on the device body;
an attachment portion that is attached to the attachment receiving portion and is used for attaching the light source unit to the fixture body, the attachment portion being attached by sliding from a light source attachment side of the fixture body where the light source unit is attached to the attachment receiving portion in a longitudinal direction of the fixture body;
A lighting device comprising: The lighting device according to claim 1, characterized in that the mounting receiving portion and the mounting portion are arranged in a pair in the longitudinal direction of the fixture body, and the pair of mounting portions are attached to the pair of mounting receiving portions by sliding toward or away from each other in the longitudinal direction of the fixture body. the mounting portion has a base portion, a pair of rising portions rising from both sides of the base portion, and a pair of engagement portions protruding from the pair of rising portions toward the outside opposite the base portion,
3. The lighting device according to claim 1 or 2, characterized in that the mounting receiving portion has a pair of slide groove portions provided along the longitudinal direction of the fixture body, through which the raised portion is slidably inserted, a pair of insertion groove portions at one end sides of the pair of slide groove portions, the groove width of which is wider outward than that of the slide groove portions, into which the pair of engagement portions are inserted, and a cutout portion provided at a step position between the insertion groove portions and the slide groove portions, which have different groove widths.

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