Lighting fixture and illuminating device

Abstract

To provide a lighting fixture and an illuminating device that can reduce the risk of entry of foreign bodies.SOLUTION: A lighting fixture according to the present disclosure comprises: a board in which a light source is installed on a mounting surface; a base comprising a first surface on which the board is installed, so as to face a joint surface that is a surface on the side opposite to the mounting surface of the board, and in which a through hole penetrating a second surface that is a surface on the side opposite to the first surface from the first surface is formed; a claw protruding to the side of the first surface from the base; and a covering member overlapping the through hole, and in contact with the claw on the side of the first surface. A portion of the covering member is arranged between the joint surface and the first surface.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a lighting fixture and a lighting device that emits light. [Background technology]

[0002] Conventionally, there is known a lighting device that includes a lighting fixture in which an LED (Light Emitting Diode) is mounted on one side of a substrate, and a lighting device disposed on the other side of the substrate (see, for example, Patent Document 1). In the light-emitting unit (light fixture) of the lighting device of Patent Document 1, the light-emitting element substrate and the reflective member are fixed to a support member by a substrate fixing member. The reflective member is sandwiched between the light-emitting element substrate and the support member. Therefore, the reflective member does not fall off from the support member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-149332 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the light-emitting unit of the lighting device disclosed in Patent Document 1, the stacked support member and reflector member each have insertion holes for inserting a pair of claws of the substrate fixing member. The light-emitting element substrate is inserted between the pair of claws of the substrate fixing member from the longitudinal end of the support member. In this configuration, from a manufacturing perspective, the distance between the support member and the surface supporting the light-emitting element substrate at the tip of the claw is set to be larger than the thickness of the light-emitting element substrate. Therefore, although the insertion hole of the support member is covered from above by the flat portion of the substrate fixing member, there is a gap between the upper surface of the support member and the flat portion of the substrate fixing member, preventing the insertion hole of the support member and the insertion hole of the reflector from being completely blocked. As a result, the lighting device disclosed in Patent Document 1 has a problem in that foreign matter such as dust, dirt, and insects can enter the interior of the light-emitting unit through the insertion hole of the support member and the insertion hole of the reflector.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a lighting fixture and a lighting device that can reduce the risk of foreign matter entering. [Means for solving the problem]

[0006] The lighting fixture according to the present disclosure comprises a substrate on whose mounting surface a light source is mounted, a base having a first surface on which the substrate is mounted so as to face a bonding surface which is the surface opposite the mounting surface of the substrate, and having a through hole formed therein that passes from the first surface to a second surface which is the surface opposite the first surface, a claw protruding from the base toward the first surface, and a covering member that overlaps the through hole and abuts the claw on the first surface side, and a portion of the covering member is disposed between the bonding surface and the first surface.

[0007] The lighting device according to the present disclosure includes the above-described lamp and a lighting fixture to which the lamp is attached. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to provide a lighting fixture and a lighting device that improves light extraction efficiency while reducing the risk of foreign matter entering. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of the lighting device 1 according to the first embodiment as viewed from below. [Figure 2] 1 is a perspective view of a lighting device 1 according to a first embodiment, in which the lighting device 1 is divided into a lighting fixture 2 and a lighting apparatus 3. FIG. [Figure 3] 1 is a perspective view of a lighting fixture 3 according to a first embodiment. [Figure 4] 1 is an exploded perspective view of a lighting fixture 3 according to a first embodiment. [Figure 5] 2 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. [Figure 6] FIG. 6 is an enlarged view of part D in FIG. 5. [Figure 7] 2 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. [Figure 8] 2 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. [Figure 9] 3A to 3C are explanatory diagrams illustrating the process of assembling the light source unit 30 of the lighting fixture 3 according to the first embodiment. [Figure 10] 3A to 3C are explanatory diagrams illustrating the process of assembling the light source unit 30 of the lighting fixture 3 according to the first embodiment. [Figure 11] 3A to 3C are explanatory diagrams illustrating the process of assembling the light source unit 30 of the lighting fixture 3 according to the first embodiment. [Figure 12] 3A to 3C are explanatory diagrams illustrating the process of assembling the light source unit 30 of the lighting fixture 3 according to the first embodiment. [Figure 13] 1 is an exploded perspective view illustrating a light source unit 30a which is a modified example of the light source unit 30 which is a main part of the lighting fixture 3 according to the first embodiment. FIG. [Figure 14] 10 is an exploded perspective view illustrating a light source unit 30b which is a modified example of the light source unit 30 which is a main part of the lighting fixture 3 according to the first embodiment. FIG. [Figure 15] 10 is an exploded perspective view illustrating a light source unit 30c which is a modified example of the light source unit 30 which is a main part of the lighting fixture 3 according to the first embodiment. FIG. [Figure 16] 10 is an exploded perspective view illustrating a light source unit 30d, which is a modified example of the light source unit 30 that is a main part of the lighting fixture 3 according to the first embodiment. FIG. [Figure 17] 10 is a cross-sectional view showing a main part of a lighting fixture 3e according to a second embodiment. FIG. [Figure 18] FIG. 10 is a cross-sectional view showing a main part of a lighting fixture 3f according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Embodiments of a lighting fixture and 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 may be modified in various ways without departing from the spirit of the present disclosure. The present disclosure also includes all possible combinations of the configurations shown in the following embodiments. In each drawing, identical reference numerals denote identical or equivalent elements, and this applies throughout the specification. Throughout the specification, the direction from the floor to the ceiling will be referred to as the "upward direction," and the ceiling side will be referred to as the "upper side." Similarly, the perpendicular direction from the ceiling to the floor will be referred to as the "downward direction," and the floor side will be referred to as the "lower side." Each drawing defines mutually orthogonal X, Y, and Z directions. While the lighting device is illustrated as being basically installed with the Z direction facing up and down, this is not necessarily limited to the up and down direction. For example, the Z direction may be tilted from the up and down direction. The relative dimensional relationships or shapes of the components in each drawing may differ from the actual ones.

[0011] Embodiment 1 FIG. 1 is a perspective view of the lighting device 1 according to the first embodiment, seen from below. FIG. 2 is a perspective view of the lighting device 1 according to the first embodiment, separated into a lighting fixture 2 and a lighting fixture 3. FIG. 3 is a perspective view of the lighting fixture 3 according to the first embodiment. The lighting device 1 includes a lighting fixture 2 that is attached to a ceiling 9, and a lighting fixture 3 that is attached to the lighting fixture 2. The lighting fixture 2 is also referred to as a fixture body. The lighting fixture 3 is also referred to as a lighting or a light unit. In the first embodiment, the lighting device 1 is configured such that the lighting fixture 2 is attached to the ceiling 9, but this is not limited to this. For example, the lighting fixture 2 may be attached to an attachment portion such as a wall or a floor.

[0012] The lighting fixture 2 forms a box-shaped mounting portion 200 to which the lamp 3 is attached. The lighting fixture 2 according to the first embodiment has inclined portions 202 on both sides of the mounting portion 200 in the Y direction. Here, the Y direction is a horizontal direction perpendicular to the X direction, which is the longitudinal direction of the lighting device 1 attached to the ceiling 9, when the Z direction is the up-down direction. The lighting fixture 2 is a so-called V-type direct-mount lighting fixture. The lighting fixture 2 is not limited to the one shown in FIGS. 1 and 2 , and may be, for example, a trough-type lighting fixture, a shade-type lighting fixture, or a recessed lighting fixture, which does not have the inclined portion 202.

[0013] FIG. 4 is an exploded perspective view of the lighting fixture 3 according to the first embodiment. FIG. 5 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. 5 shows a cross section perpendicular to the longitudinal direction of the lighting fixture 3. The lighting fixture 3 is attached to the mounting portion 200 of the lighting fixture 2 using a connector 60 such as a spring or a screw. The lighting fixture 3 irradiates light into the lighting space when attached to the mounting portion 200 of the lighting fixture 2. In the first embodiment, the lighting fixture 3 includes a light source unit 31 formed long along the X direction and a base 34 to which the light source unit 31 is attached. An outer shell 39 that covers the light source unit 31 is attached to the end of the base 34 in the Y direction. A first surface 345 of the base 34, which is the surface facing the Z2 direction, is covered by a covering member 36. A power supply unit 40 and a connector 60 for attaching the lighting fixture 3 to the lighting fixture 2 are attached to a second surface 346 of the base 34, which is the surface facing the Z1 direction. The power supply unit 40 is disposed near the center in the longitudinal direction of the base 34. The connectors 60 are disposed at both ends in the longitudinal direction of the base 34. Note that the first surface 345 of the base 34 may be referred to as the front surface, and the second surface 346 may be referred to as the back surface.

[0014] The light source unit 31 has LEDs 33 mounted on a substrate 32 that is long in the X direction. The LEDs 33 are also called light-emitting elements. The surface of the substrate 32 on which the LEDs 33 are mounted is called a mounting surface 32a. The light source unit 31 is also called an LED module. The mounting surface 32a is arranged facing the side on which the translucent portion 391 of the outer casing 39 is arranged. The base 34 is also called a chassis or mounting member. The outer casing 39 is a cover that covers the light source unit 31 and is made of a translucent material, and is formed using, for example, a resin material or glass. The covering member 36 is also called a sheet member or a film member.

[0015] A power supply line 38 is connected to the power supply unit 40. The power supply line 38 is arranged to pass through the base 340 of the pedestal 34 and connect to the light source unit 31, with one end connected to the power supply unit 40 and the other end connected to the light source unit 31. The power supply line 38 is held by a wire holder 50 attached to a wire holder fixing hole 357, which is a through hole formed in the base 340 of the pedestal 34, and electrical insulation from the pedestal 34 is maintained. In the first embodiment, there are two power supply lines 38 in a set, but this is not limiting and the power supply line 38 may be made up of one line or three or more lines in a set.

[0016] 5, the covering member 36 is formed in a thin film shape and is disposed between the light source unit 31 and the base 34. The covering member 36 covers almost the entire area of ​​the first surface 345, which is the surface of the base 340 of the base 34 facing the Z2 direction, that is not covered by the substrate 32. The covering member 36 is formed using, for example, a resin material. The thickness of the covering member 36 is, for example, about 0.5 mm.

[0017] In the lighting fixture 3 according to the first embodiment, the attachment portion 392 of the outer casing 39 is formed using a highly reflective material. Therefore, the covering member 36 according to the first embodiment does not have to be formed using a highly reflective material. In other words, the covering member 36 may be formed using a light-transmitting (translucent) material, or the portion of the covering member 36 covered by the attachment portion 392 of the outer casing 39 may be formed using a light-absorbing material as long as the performance of the product is not affected.

[0018] In particular, when considering the ease of assembly of the lamp 3, it is preferable to use a highly visible colored material for the covering member 36. Note that the color of the material used for the covering member 36 is not limited, and the covering member 36 may be formed using a material of a color other than whitish, for example.

[0019] As shown in Fig. 5, the covering member 36 is sandwiched and fixed between the substrate 32 and the base 34. As shown in Fig. 4, the covering member 36 has a plurality of slit-shaped through-holes 365 in the center in the Y direction, the through-holes 365 being smaller than the width of the substrate 32 in the Y direction. The longitudinal direction of the through-holes 365 is arranged along the X direction, and the substrate 32 is joined to the first surface 345 of the base 34 by an adhesive 86 arranged along the plurality of through-holes 365 of the covering member 36. When the adhesive 86 hardens, the covering member 36 sandwiched between the substrate 32 and the base 34 gets caught on the substrate 32 and will not come off.

[0020] 6 is an enlarged view of portion D in FIG. 5. The outer periphery of the substrate 32 overlaps with the covering member 36. In other words, the covering member 36 is disposed between the outer periphery of the substrate 32 and the first surface 345 of the base 34. The covering member 36 can be formed using an electrically insulating material, and can ensure electrical insulation between the base 34 and a light source circuit composed of a wiring pattern laid near the outer periphery of the substrate 32 and electronic components mounted near the outer periphery of the substrate 32. This configuration makes it possible to reduce the size of the substrate 32, and the weight and material costs of the lighting fixture 3 and the lighting device 1 can be reduced.

[0021] 5, the outer shell 39 has mounting portions 392 formed on both sides of a light-transmitting portion 391 facing the LED 33, which is the light source, in the Y direction. The mounting portion 392 is made up of a holding portion 393 that holds the first surface 345 of the base 34 and an engaging portion 394 that is hooked onto the second surface 346 of the base 34. The holding portion 393 is disposed so as to sandwich the end of the covering member 36 between itself and the first surface 345 of the base 34, and holds the end of the covering member 36. This prevents the end of the covering member 36 from turning over and keeps it along the first surface 345 of the base 34.

[0022] The holding portions 393 are disposed along the Z2 side of the base 34. The tips of the engagement portions 394 extending upward from both ends of the outer shell 39 in the Y direction are formed to embrace from above the upper ends of the rising portions 341 formed on both ends of the base 34 in the Y direction. This allows the attachment portions 392 of the outer shell 39 to be attached so as not to fall off from the base 34. By attaching the outer shell 39 to the base 34 so as not to fall off, the center of the covering member 36 is sandwiched between the base 34 and the substrate 32, and the ends of the covering member 36 are sandwiched and held between the base 34 and the holding portions 393. Therefore, the covering member 36 can be arranged in a state where it stably covers the first surface 345 of the base 34 without using a dedicated attachment member or the like.

[0023] The base 34 has through holes 35 in its base 340 for attaching the power supply unit 40, the electric wire arrangement device 80, and a spring receiver that is a connector 60 for connecting to the lighting fixture 2 provided on the lighting fixture 3 side. The covering member 36 covers the through holes 35 from the first surface 345 side, i.e., the Z2 side. The covering member 36 is disposed in close contact with the entire first surface 345 of the base 34, thereby significantly reducing the risk of foreign matter entering the internal space in which the light source unit 31 is disposed from outside the lighting fixture 3 via the through holes 35. Here, foreign matter refers to insects, dust, and other objects that may interfere with lighting.

[0024] As shown in FIG. 4 , in the first embodiment, the covering member 36 is formed in a ladder shape extending in the X direction. That is, the covering member 36 has two outer peripheral side portions 366 extending along the X direction, which is the longitudinal direction, and is connected between the two outer peripheral side portions 366 by a plurality of connecting portions 363 and end connecting portions 364. The end connecting portions 364 are located at both ends in the X direction and connect the outer peripheral side portions 366 in the Y direction. The covering member 36 has a protruding portion 362 that partially protrudes and covers a portion of the slit-shaped through hole 35 formed in the base portion 340 of the pedestal 34, and a connecting portion 363 that connects the through hole 35 so as to straddle the through hole 35. These can cover the through hole 35 formed in the portion of the pedestal 34 covered by the substrate 32. This improves the ease of assembly of the lamp 3 compared to individually covering multiple through holes 35 using adhesive tape or the like.

[0025] FIG. 7 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. 7 particularly shows a cross section perpendicular to the X direction that includes the wire placement tool 80. The wire placement tool 80 has mounting claws 801, a base 802, and a substrate portion 805. The mounting claws 801 protrude toward the Z2 side from both ends of the substrate portion 805 in the Y direction. The Z2-side ends of the mounting claws 801 protrude toward the center of the base 802, forming claw portions 803. The mounting claws 801 are inserted into wire placement tool mounting holes 352 and protrude toward the first surface 345 of the pedestal 34. The wire placement tool 80 is attached to the pedestal 34 by clamping the base portion 340 of the pedestal 34 between the substrate portion 805, which is arranged on the second surface 346 side of the pedestal 34, and the claw portions 803 of the mounting claws 801.

[0026] As shown in FIG. 7 , the electric wire placement tool 80 includes end protrusions 800 protruding upward from both ends of the substrate portion 805 in the Y direction. The upper ends of the end protrusions 800 are bent toward the center of the electric wire placement tool 80 in the Y direction. The electric wire placement tool 80 includes an intermediate protrusion 804 protruding upward between the end protrusion 800 and a base 802 disposed in the center of the substrate portion 805. The upper end of the intermediate protrusion 804 is bent above the upper end of the end protrusion 800 so as to cover the upper part of the end protrusion 800. A region 806 surrounded by the end protrusion 800, the intermediate protrusion 804, and the substrate portion 805 is a region through which the power supply line 38 connecting the power supply unit 40 and the light source unit 31 is passed. The upper ends of the end protrusion 800 and the intermediate protrusion 804 protrude in opposite directions and cover the upper part of the region 806. By configuring it in this manner, the power supply line 38 can be wired to the area 806 through the gap between the upper end of the end protrusion 800 and the upper end of the intermediate protrusion 804, and will not easily fall off once placed in the area 806.

[0027] Foreign matter entering through the wire arrangement tool mounting hole 352 shown in FIG. 7 must pass through the outside of the end 367 in the short direction of the covering member 36, i.e., in the Y direction. In other words, according to the lighting fixture 3 of embodiment 1, foreign matter entering through the wire arrangement tool mounting hole 352 has a long path to enter the space where the light source unit 31 is disposed. This allows the lighting fixture 3 to reduce the risk of foreign matter entering the interior space. Furthermore, in the portion where the mounting claw 801 protrudes toward the first surface 345 of the base 34, the covering member 36 is sandwiched between the mounting claw 801 and the holding portion 393 of the outer casing 39, blocking the path from the wire arrangement tool mounting hole 352 to the space where the light source unit 31 is disposed. This allows the lighting fixture 3 to significantly reduce the risk of foreign matter entering the interior space.

[0028] FIG. 8 is a cross-sectional view of the lighting fixture 3 according to the first embodiment. FIG. 8 particularly shows a cross section perpendicular to the X direction, including the connector 60. The connector 60 according to the first embodiment has a guide claw 602. The guide claw 602 is inserted into the connector mounting hole 350 and protrudes toward the first surface 345 of the base 34. The connector 60 is hooked onto the base 340 of the base 34 as the guide claw 602 passes from the second surface 346 side to the first surface 345 side of the base 34. This prevents the connector 60 from falling off the base 34. As shown in FIG. 4, a slide piece 603 protrudes in the X direction from the lower end of the central portion of the connector 60. A portion of the base 340 of the base 34 is cut out toward the Z2 side at the central portion of the base 340 of the base 34 to form a slide hole 351 into which the slide piece 603 can be inserted in the X direction. The sliding piece 603 of the connector 60 is covered from above by the fixed piece 351a formed on the base 340 of the pedestal 34. This structure and the guide claw 602 prevent the connector 60 from falling off the pedestal 34.

[0029] As shown in FIG. 8 , foreign matter entering through the connector mounting hole 350 must pass through the end of the covering member 36 in the short-side direction, i.e., the Y-direction, and must pass around the outside of the end 367 in the short-side direction, i.e., the Y-direction. In other words, according to the lighting fixture 3 of embodiment 1, foreign matter entering through the connector mounting hole 350 has a long path to enter the space where the light source unit 31 is disposed. This reduces the risk of foreign matter entering the interior space of the lighting fixture 3. Furthermore, in the portion where the guide claw 602 protrudes toward the first surface 345 of the base 34, the covering member 36 is sandwiched between the guide claw 602 and the holding portion 393 of the outer shell 39, blocking the path from the wire placement fixture mounting hole 352 to the space where the light source unit 31 is disposed. The lighting fixture 3 can significantly reduce the risk of foreign matter entering the interior space.

[0030] Moreover, in the first embodiment, the covering member 36 is provided with a connecting portion 363 that covers the slide hole 351 that secures the connector 60. The connecting portion 363 and the joint surface 32b of the substrate 32 face each other. In the first embodiment, the connecting portion 363 is adhered to the joint surface 32b of the substrate 32 with adhesive 86. As a result, the substrate 32 and the slide piece 603 of the connector 60 are disposed with the connecting portion 363 of the covering member 36 therebetween and are insulated from each other. Furthermore, the slide hole 351 that secures the connector 60 is covered and blocked by the connecting portion 363 of the covering member 36, which reduces the risk of foreign matter entering the internal space.

[0031] 9, 10, 11, and 12 are explanatory views of the process of assembling the light source unit 30 of the lighting fixture 3 according to the first embodiment. In the lighting fixture 3 according to the first embodiment, the covering member 36 is placed on the first surface 345 of the base 34, and then the adhesive 86 is applied. Specifically, the adhesive 86 is applied using a nozzle, a roller, a brush, or the like. As shown in FIG. 10, the adhesive 86 is applied along the through-hole 365 of the covering member 36 to the center of the base 34 in the Y direction and the center of the covering member 36. As shown in FIG. 11, the surface of the substrate 32 on which the LEDs 33 are not disposed is pressed against the applied adhesive 86, and the light source unit 31 is adhered to the base 34. As the light source unit 31 is adhered to the base 34, the covering member 36 is also sandwiched and fixed between the base 34 and the substrate 32. At this time, the covering member 36 controls the thickness direction when the adhesive 86 hardens. 6, the adhesive 86 spreads and is crushed as the light source unit 31 is pressed against the base 34. When the light source unit 31 is pressed against the covering member 36, the thickness D2 of the adhesive 86 becomes equal to the thickness D1 of the covering member 36 even at its smallest. Note that the light source unit 31 may be fixed to the base 34 using adhesive tape or the like instead of the adhesive 86.

[0032] Furthermore, protruding portions 362 protruding from outer peripheral side portions 366 of covering member 36 toward the center in the Y direction, connecting portions 363 connecting the outer peripheral side portions across the center in the Y direction of covering member 36, and end connecting portions 364 connecting the outer peripheral side portions 366 across the center in the Y direction at the ends of covering member 36 in the X direction may be adhered to substrate 32 with adhesive 86. In this manner, covering member 36 is firmly held by substrate 32.

[0033] Note that adhesive 86 may be applied to base 34 before covering member 36 is placed on first surface 345 of base 34. In this case, protruding portion 362 and connecting portion 363 of covering member 36 may be adhered to base 34 with adhesive. In this way, covering member 36 is held more firmly to base 34.

[0034] (Variation) The lighting device 1 may have a modified structure of the light source unit 30, which is a main part of the lighting fixture 3. As a modified example of the lighting device 1 according to embodiment 1, a modified structure of the light source unit 30, which is a main part of the lighting fixture 3, will be described. The following description will focus on the modified parts. Furthermore, in the drawings, modified parts having the same functions will be indicated by the same reference numerals as those in the drawings used to describe embodiment 1.

[0035] 13 is an exploded perspective view illustrating a light source unit 30a, which is a modified example of the light source unit 30 that is a main part of the lighting fixture 3 according to Embodiment 1. While the covering member 36 of the light source unit 30 according to Embodiment 1 is composed of a single sheet-like member, in the light source unit 30a according to the modified example, the covering member 36a is composed of two sheet-like members. The covering member 36a includes a first covering member 36a-1 and a second covering member 36a-2 that are divided along the X direction, which is the longitudinal direction of the lighting device 1. The first covering member 36a-1 and the second covering member 36a-2 are arranged side by side in the Y direction.

[0036] The first covering member 36a-1 and the second covering member 36a-2 have shapes corresponding to the two portions obtained by dividing the covering member 36 of the light source unit 30 of the first embodiment into two at the center in the Y direction. In other words, when the first covering member 36a-1 and the second covering member 36a-2 are arranged side by side in the Y direction, they have the same shape as the covering member 36 of the first embodiment. The first covering member 36a-1 and the second covering member 36a-2 are each formed so that a connecting portion 363a protrudes in the Y direction from an outer peripheral side portion 366a at the same position in the X direction. Note that the connecting portion 363a collectively refers to the connecting portions 363a-1 and 363b-2, and the end connecting portion 364a collectively refers to the connecting portions 364a-1 and 364b-2. In the following explanation, when the symbols with "-1" and "-2" are used without the "-1" and "-2", this refers to the components with the symbols with "-1" and "-2" collectively.

[0037] The second covering member 36a-2 also has a protruding portion 362 that protrudes from the outer circumferential side portion 366a-2. By aligning the X-direction positions of the connecting portion 363a and the end connecting portion 364a that protrude from the outer circumferential side portion 366a, the first covering member 36a-1 and the second covering member 36a-2 form a shape that corresponds to the connecting portion 363 of the covering member 36, and also includes the protruding portion 362, it is possible to form the same shape as the covering member 36. Dividing the covering member 36a into two reduces costs.

[0038] 14 is an exploded perspective view illustrating a light source unit 30b, which is a modified example of the light source unit 30 that is a main part of the lighting fixture 3 according to Embodiment 1. In the modified light source unit 30b, the covering member 36a is composed of two sheet-like members. The covering member 36a includes a first covering member 36b-1 and a second covering member 36b-2 that are divided along the X direction, which is the longitudinal direction of the lighting device 1. The first covering member 36b-1 and the second covering member 36b-2 are arranged side by side in the Y direction.

[0039] The first covering member 36b-1 and the second covering member 36b-2 have shapes corresponding to the respective portions obtained by dividing the covering member 36 of the light source unit 30 of the first embodiment into two in the Y direction at the base of the connecting portion 363 and the end connecting portion 364 and the outer circumferential side portion 366. In other words, when the first covering member 36b-1 and the second covering member 36b-2 are arranged side by side in the Y direction, they have the same shape as the covering member 36 of the first embodiment. The first covering member 36b-1 is formed in a rectangular shape that is long in the X direction. On the other hand, the second covering member 36b-2 is formed so that the connecting portion 363b, the end connecting portion 364b, and the protruding portion 362 protrude from the rectangular outer circumferential side portion 366b-2 toward the first covering member 36b-1. Dividing the covering member 36b into two also reduces costs. Furthermore, the first covering member 36b-1 has a simple rectangular shape, further reducing costs.

[0040] FIG. 15 is an exploded perspective view illustrating a light source unit 30c, which is a modification of the light source unit 30, which is a main part of the lighting fixture 3 according to the first embodiment. In the light source unit 30c according to the modification, the covering member 36c is composed of two sheet-like members, similar to the covering member 36a. However, the covering member 36c is divided along the X direction, which is the longitudinal direction of the lighting device 1, into a first covering member 36c-1 and a second covering member 36b-2. The connecting portions 363c of the covering member 36c are each formed longer in the Y direction than the connecting portion 363a of the covering member 36a. As a result, when the first covering member 36c-1 and the second covering member 36c-2 of the covering member 36c are arranged side by side in the Y direction, the connecting portions 363c overlap each other. Therefore, the connecting portions 363c can suppress the influence of deformation due to the through-hole 35 formed in the base 34 and can reliably close the through-hole 35. Furthermore, dividing the covering member 36c also contributes to cost reduction.

[0041] FIG. 16 is an exploded perspective view illustrating a light source unit 30d, which is a modification of the light source unit 30 that is a main part of the lighting fixture 3 according to the first embodiment. In the light source unit 30d according to the modification, the covering member 36d is composed of two sheet-like members, similar to the covering member 36a. However, the covering member 36d is divided into a first covering member 36d-1 and a second covering member 36d-2 along the X direction, which is the longitudinal direction of the lighting device 1, and does not include the connecting portion 363, the end connecting portion 364, or the protruding portion 362. That is, the first covering member 36d-1 and the second covering member 36d-2 are formed in a rectangular shape that is elongated in the X direction, similar to the first covering member 36b-1 of the covering member 36b. If the through-hole 35 formed in the center of the base 34 in the Y direction is reliably blocked by the substrate 32 of the light source unit 31, it is sufficient that the covering member 36d be able to block the through-holes 35 formed at the ends of the base 34 in the Y direction. Therefore, the covering member 36d does not need to have the connecting portion 363, the end connecting portion 364, and the protruding portion 362. The covering member 36d is also divided into two, which reduces costs. Moreover, the first covering member 36d-1 and the second covering member 36d-2 are both simply rectangular, which further reduces costs.

[0042] Embodiment 2 The lighting device 201 according to the second embodiment is different from the lighting device 1 according to the first embodiment in that the covering member 36 and the outer casing 39 of the lamp 3 are modified. The lighting device 201 according to the second embodiment will be described mainly focusing on the modifications made to the lighting device 201 according to the first embodiment. Furthermore, with regard to the components of the lighting device 201 according to the second embodiment, components having the same functions in each drawing will be denoted by the same reference numerals as those in the drawings used to explain the first embodiment.

[0043] FIG. 17 is a cross-sectional view showing a main portion of a lamp 3e according to the second embodiment. FIG. 17 shows a cross-section corresponding to FIG. 8, which is a cross-sectional view of the lamp 3 according to the first embodiment. In the covering member 36e according to the second embodiment, the surface facing the Z2 side is formed to have a high reflectivity. That is, the surface of the outer casing 39e of the covering member 36e facing the translucent portion 391 is formed to have a higher reflectivity in the visible light band than at least the translucent portion 391 of the outer casing 39e. With this configuration, the outer casing 39e of the lamp 3e can have the holding portion 393e of the mounting portion 392e, which is combined with the base 34, formed from the same material as the translucent portion 391. That is, since the outer casing 39e can be molded from a single material, the material and processing costs of the outer casing 39e can be reduced, and processability is improved, which can lead to improved product quality.

[0044] In the case of the lamp 3 according to the first embodiment, in which the surface of the covering member 36 facing the Z2 side is not highly reflective, at least the Z2-side surface of the holding portion 393, which is located on the Z2 side of the base 34 and is included in the mounting portion 392 of the outer casing 39, needs to be highly reflective. In this case, the outer casing 39 needs to be formed, for example, by forming the holding portion 393 from a material with high reflectivity and the translucent portion 391 from a material with high translucency, which requires so-called two-color molding, which is costly. However, by using a covering member 36e having a highly reflective surface as in the lamp 3e according to the second embodiment, the cost of the outer casing 39e can be reduced.

[0045] Embodiment 3 The lighting device 301 according to the third embodiment is different from the lighting device 1 according to the first embodiment in that the covering member 36 and the outer casing 39 of the lamp 3 are modified. The lighting device 301 according to the third embodiment will be described mainly focusing on the changes made to the lighting device 301 according to the first embodiment. Furthermore, with regard to the components of the lighting device 301 according to the third embodiment, components having the same functions in each drawing will be denoted by the same reference numerals as those in the drawings used to explain the first embodiment.

[0046] FIG. 18 is a cross-sectional view showing a main portion of a lamp 3f according to the third embodiment. FIG. 18 shows a cross-section corresponding to FIG. 8, which is a cross-sectional view of the lamp 3 according to the first embodiment. The Z2-side surface of the covering member 36f of the lamp 3 according to the third embodiment is formed to be highly reflective. That is, the surface of the covering member 36f facing the translucent portion 391 is formed to have a higher reflectance in the visible light band than at least the translucent portion 391 of the outer shell 91. Furthermore, in the outer shell 39f, the holding portion 393f of the mounting portion 392f, which is located on the Z2 side of the base 34, is formed to be shorter in the Y direction than the holding portion 393 according to the first embodiment. At least the Z2-side surface of the holding portion 393f is configured to have at least high reflectance. With this configuration, at least the holding portion 393f of the mounting portion 392f of the outer shell 39f is formed to be short, which allows the material cost of the outer shell 39 to be reduced without reducing light utilization efficiency. Furthermore, the outer shell 39 can reduce the amount of material used, contributing to a lighter lamp 3f. The lighter lamp 3f has the effects of simplifying packaging for shipping, reducing the burden of installation, and reducing the excessive load on the fixtures and construction parts, and is also expected to simplify the connector 60.

[0047] The embodiments of the present disclosure are not limited to the above-described embodiments, and various modifications are possible as needed. [Explanation of symbols]

[0048] REFERENCE SIGNS LIST 1 lighting device, 2 lighting fixture, 3 lighting fixture, 3e lighting fixture, 3f lighting fixture, 9 ceiling, 30 light source unit, 30a light source unit, 30b light source unit, 30c light source unit, 30d light source unit, 31 light source section, 32 substrate, 32a mounting surface, 32b bonding surface, 33 LED, 34 base, 35 through hole, 36 covering member, 36a covering member, 36a-1 first covering member, 36a-2 second covering member, 36b covering member, 36b-1 first covering member, 36b-2 second covering member, 36c covering member, 36c-1 first covering member, 36c-2 second covering member, 36d covering member, 36d-1 first covering member, 36d-2 second covering member, 36e covering member, 36f covering member, 38 power supply line, 39 Outer casing, 39e outer casing, 39f outer casing, 40 power supply unit, 50 electric wire holder, 60 connecting unit, 80 electric wire arrangement unit, 86 adhesive, 200 mounting unit, 201 lighting device, 202 inclined unit, 301 lighting device, 340 base, 345 first surface, 346 second surface, 350 connecting device mounting hole, 351 slide hole, 351a fixing piece, 352 electric wire arrangement unit mounting hole, 357 electric wire holder fixing hole, 362 protruding portion, 363 connecting portion, 363a connecting portion, 363a-1 connecting portion, 363b connecting portion, 363c connecting portion, 364 end connecting portion, 365 through portion, 366 outer peripheral side portion, 366a outer peripheral side portion, 366a-2 outer peripheral side portion, 366b-2 Outer peripheral side portion, 367 end portion, 391 light-transmitting portion, 392 mounting portion, 392e mounting portion, 392f mounting portion, 393 holding portion, 393e holding portion, 393f holding portion, 394 engaging portion, 602 guide claw, 603 slide piece, 800 end protrusion portion, 801 mounting claw, 802 base, 803 claw portion, 804 intermediate protrusion portion, 805 substrate portion, 806 region.

Claims

1. a substrate on which a light source is mounted; a base having a first surface on which the substrate is placed so as to face a bonding surface that is a surface opposite to the mounting surface of the substrate, and having a through hole formed therein that passes through from the first surface to a second surface that is a surface opposite to the first surface; a claw protruding from the base toward the first surface; a covering member that overlaps the through hole and abuts against the claw on the first surface side; Equipped with A lamp fixture in which a portion of the covering member is disposed between the joint surface and the first surface.

2. The lamp according to claim 1, further comprising an outer shell attached to the base so as to cover the light source, the outer shell sandwiching the covering member between the claws.

3. 3. The lamp according to claim 1, wherein the tip of the claw protrudes toward the first surface side beyond the substrate.

4. A lighting fixture according to any one of claims 1 to 3; and a lighting fixture to which the lamp is attached.

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