JP7479941B2 - Lighting fixtures and lighting devices - Google Patents

Description

This disclosure relates to lighting fixtures and lighting devices that emit light.

Conventionally, there is known a lighting device that includes a lamp in which an LED (Light Emitting Diode) is mounted on one side of a substrate, and a lighting device arranged on the other side of the substrate (see, for example, Patent Document 1). In the light-emitting unit (lamp) of the lighting device of Patent Document 1, the light-emitting element substrate and the reflective member are fixed to the support member by a substrate fixing member. The reflective member is sandwiched between the light-emitting element substrate and the support member. For this reason, the reflective member does not fall off the support member.

JP 2016-149332 A

However, in the light-emitting unit of the lighting device of Patent Document 1, the supporting member and the reflecting member, which are assembled by stacking, each have an insertion hole for inserting a pair of claws of the substrate fixing member. Also, the light-emitting element substrate is configured to be inserted between the pair of claws of the substrate fixing member from the longitudinal end of the supporting member. In such a configuration, from the viewpoint of manufacturing, the dimension between the supporting member and the surface supporting the light-emitting element substrate at the tip of the claw is set to be larger than the thickness dimension of the light-emitting element substrate. Therefore, although the insertion hole of the supporting member is covered from above by the flat portion of the substrate fixing member, there is a gap between the upper surface of the supporting member and the flat portion of the substrate fixing member, and the insertion hole of the supporting member and the insertion hole of the reflecting member cannot be completely blocked. As a result, the lighting device of Patent Document 1 has a problem in that foreign objects such as dust, dirt, and insects enter the inside of the light-emitting unit through the insertion hole of the supporting member and the insertion hole of the reflecting member.

The present disclosure has been made in consideration of the above problems, and aims to provide a lighting fixture and lighting device that can reduce the risk of foreign objects entering the device.

The lighting fixture of the present disclosure comprises a substrate on which a light-emitting element is mounted on a mounting surface, a base having a first surface that is joined to a joining surface, which is the surface opposite the mounting surface of the substrate, and at least a portion of which is covered by the substrate, and in which a through hole is formed passing through the first surface to a second surface, which is the surface opposite the first surface, and a covering member that is arranged between the outer periphery of the substrate and the first surface so as to overlap with the through hole, and the covering member has a plurality of through portions formed in the portion covered by the substrate, in which an adhesive is arranged for joining the joining surface and the first surface, and the covering member is held on the base by joining the joining surface and the first surface with the adhesive arranged in the through portions .

The lighting device according to the present disclosure includes the above-mentioned lamp and a lighting fixture to which the lamp is attached.

This disclosure makes it possible to provide a lighting fixture and lighting device that improves light extraction efficiency while reducing the risk of foreign matter entering the device.

1 is a perspective view of a lighting device 1 according to a first embodiment, as viewed from below. FIG. 1 is a perspective view of a lighting device 1 according to a first embodiment in a state where the lighting device 1 is divided into a lighting fixture 2 and a lamp 3. FIG. FIG. 2 is a perspective view of a lighting device 3 according to the first embodiment. FIG. 2 is an exploded perspective view of the lamp 3 according to the first embodiment. 2 is a cross-sectional view of a lamp 3 according to the first embodiment. FIG. FIG. 6 is an enlarged view of part D in FIG. 5 . 2 is a cross-sectional view of a lamp 3 according to the first embodiment. FIG. 2 is a cross-sectional view of a lamp 3 according to the first embodiment. FIG. 5A to 5C are explanatory diagrams illustrating a process for assembling the light source unit 30 of the lamp 3 according to the first embodiment. 5A to 5C are explanatory diagrams illustrating a process for assembling the light source unit 30 of the lamp 3 according to the first embodiment. 5A to 5C are explanatory diagrams illustrating a process for assembling the light source unit 30 of the lamp 3 according to the first embodiment. 5A to 5C are explanatory diagrams illustrating a process for assembling the light source unit 30 of the lamp 3 according to the first embodiment. 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 lamp 3 according to the first embodiment. FIG. 1 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 lamp 3 according to the first embodiment. FIG. 1 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 lamp 3 according to the first embodiment. FIG. 10 is an exploded perspective view illustrating a light source unit 30d which is a modified example of the light source unit 30 which is a main part of the lamp 3 according to the first embodiment. FIG. 11 is a cross-sectional view showing a main part of a lighting device 3e according to a second embodiment. FIG. 11 is a cross-sectional view showing a main part of a lighting fixture 3f according to embodiment 3. FIG.

The following describes the embodiments of the lighting fixture and lighting device according to the present disclosure with reference to the drawings. The present disclosure is not limited to the following embodiments, and various modifications are possible without departing from the spirit of the present disclosure. The present disclosure includes all combinations of the configurations shown in the following embodiments that can be combined. In each drawing, the same reference numerals are used to denote the same or equivalent parts, and this is common throughout the specification. In the entire specification, the direction from the floor to the ceiling is referred to as the "upper direction," and the ceiling side is referred to as the "upper side." Similarly, the vertical direction from the ceiling to the floor is referred to as the "downward direction," and the floor side is referred to as the "lower side." In each drawing, X, Y, and Z directions that are mutually orthogonal are defined. The lighting device is basically described in a state in which the Z direction is set in the vertical direction, but is not necessarily limited to the vertical direction, and may be arranged with the Z direction tilted from the vertical direction, for example. In addition, the relative dimensional relationship or shape of each component in each drawing may differ from the actual one.

Embodiment 1.
FIG. 1 is a perspective view of the lighting device 1 according to the first embodiment, as viewed from below. FIG. 2 is a perspective view of the lighting device 1 according to the first embodiment, divided into a lighting fixture 2 and a lamp 3. FIG. 3 is a perspective view of the lamp 3 according to the first embodiment. The lighting device 1 includes a lighting fixture 2 that is attached to a ceiling 9, and a lamp 3 that is attached to the lighting fixture 2. The lighting fixture 2 is also referred to as a fixture body. The lamp 3 is also referred to as a lighting or 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 is not limited to this. For example, the lighting fixture 2 may be attached to a mounting portion such as a wall or a floor.

The lighting fixture 2 forms a box-shaped mounting portion 200 in which the luminaire 3 is mounted. 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 direction that is perpendicular to the X direction, which is the longitudinal direction of the lighting device 1 mounted on the ceiling 9, in the horizontal direction when the Z direction is the up-down direction. The lighting fixture 2 is a so-called V-type directly-mounted lighting fixture. The lighting fixture 2 is not limited to the one shown in Figs. 1 and 2, and may be, for example, a directly-mounted lighting fixture such as a trough type or a shaded type that does not have an inclined portion 202, or a recessed lighting fixture.

Figure 4 is an exploded perspective view of the lamp 3 according to the first embodiment. Figure 5 is a cross-sectional view of the lamp 3 according to the first embodiment. Figure 5 shows a cross section perpendicular to the longitudinal direction of the lamp 3. The lamp 3 is attached to the mounting part 200 of the lighting fixture 2 using a connector 60 such as a spring or a screw. The lamp 3 irradiates light into the lighting space when attached to the mounting part 200 of the lighting fixture 2. In the first embodiment, the lamp 3 includes a light source unit 31 formed long along the X direction and a base 34 on whose surface 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. The first surface 345 of the base 34, which is the surface facing the Z2 direction, is covered by the covering member 36. In addition, the power supply unit 40 and the connector 60 for attaching the lamp 3 to the lighting fixture 2 are attached to the 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 of the base 34 in the longitudinal direction. The connectors 60 are disposed at both ends of the base 34 in the longitudinal direction. 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.

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 the 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.

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 limited to this and the power supply line 38 may be composed of one, or three or more in a set.

As shown in FIG. 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 facing the Z2 direction of the base 340 of the base 34, that is not covered by the substrate 32. The covering member 36 is formed, for example, using a resin material. The thickness dimension of the covering member 36 is, for example, about 0.5 mm.

In the lamp 3 according to the first embodiment, the mounting 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, in the portion covered by the mounting portion 392 of the outer casing 39, it may be formed using a light-absorbing material to the extent that the performance of the product is not affected.

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 white, for example.

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 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 does not come off.

Figure 6 is an enlarged view of part D in Figure 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 the light source circuit, which is composed of the wiring pattern laid near the outer periphery of the substrate 32 and the 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 lamp 3 and the lighting device 1 can be reduced.

As shown in FIG. 5, the outer casing 39 has mounting portions 392 formed on both sides of a light-transmitting portion 391 that faces the LED 33, which is the light source, in the Y direction. The mounting portion 392 is composed of a holding portion 393 that holds the first surface 345 of the base 34 and an engagement 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 the first surface 345 of the base 34 and the holding portion 393, 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.

The holding portion 393 is 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 at both ends of the base 34 in the Y direction. This allows the mounting portion 392 of the outer shell 39 to be assembled so as not to fall off the base 34. By assembling the outer shell 39 so as not to fall off the base 34, the center of the covering member 36 is sandwiched between the base 34 and the substrate 32, and the end of the covering member 36 is sandwiched and held between the base 34 and the holding portion 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 mounting member or the like.

The base 340 of the base 34 has through holes 35 for mounting the power supply unit 40, the electric wire arrangement device 80, and the spring receiver which is the connector 60 for the lighting fixture 2 provided on the side of the lamp 3. 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 arranged in close contact with the entire first surface 345 of the base 34, so that the risk of foreign matter entering the internal space in which the light source unit 31 is arranged from outside the lamp 3 via these through holes 35 is significantly reduced. Here, foreign matter refers to things that interfere with lighting, such as insects and dust.

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 circumferential side portions 366 extending along the X direction, which is the longitudinal direction, and is connected between them 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 circumferential side portions 366 in the Y direction. The covering member 36 has a protruding portion 362 that protrudes outward and covers a portion of the slit-shaped through hole 35 formed in the base portion 340 of the base 34, and a connecting portion 363 that connects the through hole 35 so as to straddle it. These can cover the through hole 35 formed in the portion of the base 34 covered by the substrate 32. This improves the ease of assembly of the lamp 3 compared to individually covering a large number of through holes 35 using adhesive tape or the like.

Figure 7 is a cross-sectional view of the lighting device 3 according to the first embodiment. Figure 7 shows a cross section perpendicular to the X direction including the electric wire arrangement tool 80 in particular. The electric wire arrangement tool 80 has a mounting claw 801, a base 802, and a substrate portion 805. The mounting claw 801 protrudes from both ends of the substrate portion 805 in the Y direction toward the Z2 side. The mounting claw 801 protrudes from the Z2 side end toward the center of the base 802 to form a claw portion 803. The mounting claw 801 is inserted into the electric wire arrangement tool mounting hole 352 and protrudes toward the first surface 345 of the base 34. The electric wire arrangement tool 80 is attached to the base 34 by clamping the base 340 of the base 34 between the substrate portion 805 arranged on the second surface 346 side of the base 34 and the claw portion 803 of the mounting claw 801.

As shown in FIG. 7, the electric wire arrangement tool 80 has end protrusions 800 protruding upward from both ends of the substrate part 805 in the Y direction. The upper end of the end protrusion 800 is bent toward the center of the electric wire arrangement tool 80 in the Y direction. The electric wire arrangement tool 80 has an intermediate protrusion 804 protruding upward between the end protrusion 800 and the base 802 arranged in the center of the substrate part 805. The upper end of the intermediate protrusion 804 is bent so as to cover the upper part of the end protrusion 800 above the upper end of the end protrusion 800. The region 806 surrounded by the end protrusion 800, the intermediate protrusion 804, and the substrate part 805 is a region through which the power supply line 38 connecting the power supply part 40 and the light source part 31 is passed. The upper ends of the end protrusion 800 and the intermediate protrusion 804 protrude in opposing directions and cover the upper part of the region 806. By configuring it in this way, 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 after being placed in the area 806.

The foreign matter entering through the electric 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, that is, in the Y direction. In other words, according to the lighting device 3 according to the first embodiment, the foreign matter entering through the electric wire arrangement tool mounting hole 352 has a long intrusion path into the space in which the light source unit 31 is arranged. This allows the lighting device 3 to reduce the risk of foreign matter entering the internal space. In addition, 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 shell 39, and the intrusion path from the electric wire arrangement tool mounting hole 352 to the space in which the light source unit 31 is arranged is blocked. This allows the lighting device 3 to significantly reduce the risk of foreign matter entering the internal space.

Figure 8 is a cross-sectional view of the lamp 3 according to the first embodiment. Figure 8 shows a cross section perpendicular to the X direction, particularly 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 side of the base 34. The connector 60 is hooked on the base 340 of the base 34 by passing the guide claw 602 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. Also, as shown in Figure 4, a slide piece 603 protruding in the X direction protrudes from the lower end of the center of the connector 60. In the center of the base 340 of the base 340 of the base 34, a part of the base 340 is cut and raised toward the Z2 side, and a slide hole 351 is formed so that the slide piece 603 can be freely inserted in the X direction. The slide 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.

8, foreign matter entering through the connector mounting hole 350 must pass through the end of the covering member 36 in the short direction, i.e., the Y direction, and must pass through the outside of the end 367 in the short direction, i.e., the Y direction, of the covering member 36. In other words, according to the lighting device 3 according to the first embodiment, foreign matter entering through the connector mounting hole 350 has a long intrusion path into the space in which the light source unit 31 is arranged. This allows the lighting device 3 to reduce the risk of foreign matter entering the internal space. In addition, 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, and the intrusion path from the electric wire arrangement device mounting hole 352 to the space in which the light source unit 31 is arranged is blocked. The lighting device 3 can significantly reduce the risk of foreign matter entering the internal space.

In addition, in the first embodiment, the covering member 36 is provided with a connection portion 363 so as to cover the slide hole 351 that fixes the connector 60. The connection portion 363 and the joint surface 32b of the substrate 32 face each other. In the first embodiment, the connection portion 363 is adhered to the joint surface 32b of the substrate 32 by adhesive 86. As a result, the substrate 32 and the slide piece 603 of the connector 60 are arranged with the connection portion 363 of the covering member 36 between them, and are insulated. In addition, the slide hole 351 that fixes the connector 60 is covered and blocked by the connection portion 363 of the covering member 36, which reduces the risk of foreign matter entering the internal space.

9, 10, 11, and 12 are explanatory diagrams of the process of assembling the light source unit 30 of the lamp 3 according to the first embodiment. In the lamp 3 according to the first embodiment, the adhesive 86 is laid with the covering member 36 placed on the first surface 345 of the base 34. The adhesive 86 is applied, in detail, using a nozzle, a roller, a brush, or the like. As shown in FIG. 10, the adhesive 86 is laid along the through-hole 365 of the covering member 36 at the center of the Y direction of the base 34 and at 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 arranged is pressed against the laid adhesive 86 against the base 34, 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 manages the thickness direction when the adhesive 86 hardens. That is, as shown in FIG. 6, the adhesive 86 spreads and is crushed by pressing the light source unit 31 against the base 34. When the light source unit 31 is pressed against the covering member 36, the thickness dimension D2 of the adhesive 86 becomes equal to the thickness dimension 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.

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

Adhesive 86 may be applied to the base 34 before the covering member 36 is placed on the first surface 345 of the base 34. In this case, the protruding portion 362 and the connecting portion 363 of the covering member 36 may be adhered to the base 34 by adhesive. In this way, the covering member 36 is held more firmly against the base 34.

(Modification)
The lighting device 1 may have a modified structure of the light source unit 30, which is a main part of the lamp 3. As a modified example of the lighting device 1 according to the first embodiment, a modified structure of the light source unit 30, which is a main part of the lamp 3, will be described. In the following description, the modified parts will be mainly described. Furthermore, the modified parts having the same functions in each drawing will be indicated by the same reference numerals as those in the drawings used in the description of the first embodiment.

Figure 13 is an exploded perspective view illustrating light source unit 30a, which is a modified example of light source unit 30, which is a main part of lamp 3 according to embodiment 1. Covering member 36 of light source unit 30 according to embodiment 1 is composed of one sheet-like member, but in light source unit 30a according to the modified example, covering member 36a is composed of two sheet-like members. Covering member 36a includes first covering member 36a-1 and second covering member 36a-2, which are divided along the X direction, which is the longitudinal direction of lighting device 1. First covering member 36a-1 and second covering member 36a-2 are arranged side by side in the Y direction.

The first covering member 36a-1 and the second covering member 36a-2 have shapes corresponding to the two parts obtained by dividing the covering member 36 of the light source unit 30 of embodiment 1 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 embodiment 1. The first covering member 36a-1 and the second covering member 36a-2 are formed so that the connection portion 363a protrudes in the Y direction from the outer peripheral side portion 366a at the same position in the X direction. Note that the connection portion 363a is a general term for the connection portions 363a-1 and 363b-2, and the end connection portion 364a is a general term for the connection portions 364a-1 and 364b-2. In the following explanation, when the "-1" or "-2" is omitted from the symbols, it refers collectively to the components etc. with the symbols "-1" or "-2" added.

The second covering member 36a-2 also has a protruding portion 362 that protrudes from the outer circumferential side portion 366a-2. The first covering member 36a-1 and the second covering member 36a-2 form a shape equivalent to the connecting portion 363 of the covering member 36 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 with each other, and since they also have the protruding portion 362, they can be formed into the same shape as the covering member 36. The covering member 36a is divided into two, which reduces costs.

Figure 14 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 lamp 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 in parallel in the Y direction.

The first covering member 36b-1 and the second covering member 36b-2 have shapes corresponding to the respective parts obtained by dividing the covering member 36 according to the light source unit 30 of the first embodiment into two parts 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 according to 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 overhanging portion 362 protrude from the rectangular outer circumferential side portion 366b-2 toward the first covering member 36b-1. The covering member 36b is also divided into two parts, which allows costs to be reduced. Furthermore, the first covering member 36b-1 has a simple rectangular shape, which allows further cost reduction.

Figure 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 lamp 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 has a connection portion 363c provided on each of the first covering member 36c-1 and the second covering member 36b-2, which are divided along the X direction, which is the longitudinal direction of the lighting device 1, and is formed longer in the Y direction than the connection portion 363a of the covering member 36a. As a result, the first covering member 36c-1 and the second covering member 36c-2 of the covering member 36c are arranged so that the connection portions 363c overlap each other when they are arranged in parallel in the Y direction. Therefore, the connection portion 363c can suppress the influence of deformation caused by the through hole 35 formed in the base 34, and can reliably block the through hole 35. In addition, the covering member 36c is also divided, thereby reducing costs.

Figure 16 is an exploded perspective view illustrating a light source unit 30d, which is a modified example of the light source unit 30, which is a main part of the lamp 3 according to the first embodiment. In the light source unit 30d according to the modified example, the covering member 36d is composed of two sheet-like members, similar to the covering member 36a. However, the first covering member 36d-1 and the second covering member 36d-2, which are divided along the X direction, which is the longitudinal direction of the lighting device 1, constituting the covering member 36d, do not have the connection portion 363, the end connection portion 364, and 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 long in the X direction, similar to the first covering member 36b-1 in the covering member 36b. When 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 can block the through hole 35 formed at the end of the base 34 in the Y direction. Therefore, the covering member 36d does not need to have the connection portion 363, the end connection portion 364, and the protruding portion 362. The covering member 36d is also divided into two, which reduces costs. In addition, the first covering member 36d-1 and the second covering member 36d-2 are both simply rectangular, which further reduces costs.

Embodiment 2.
The lighting device 201 according to the second embodiment is obtained by modifying the covering member 36 and the outer casing 39 of the lamp 3 in the lighting device 1 according to the first embodiment. The lighting device 201 according to the second embodiment will be described mainly with respect to the modifications made to the lighting device 201 according to the first embodiment. Furthermore, in the drawings, parts of the lighting device 201 according to the second embodiment that have the same functions are denoted by the same reference numerals as those in the drawings used in the description of the first embodiment.

Figure 17 is a cross-sectional view showing the main part of the lamp 3e according to the second embodiment. Figure 17 shows a cross-section corresponding to Figure 8, which is a cross-sectional view of the lamp 3 according to the first embodiment. The covering member 36e according to the second embodiment has a surface facing the Z2 side formed to have a high reflectivity. In other words, the reflectivity of light in the visible light band of the surface facing the transparent portion 391 side of the outer shell 39e of the covering member 36e is formed to be at least higher than that of the transparent portion 391 of the outer shell 91. By being configured in this way, the outer shell 39e of the lamp 3e can form the holding portion 393e of the mounting portion 392e that is combined with the base 34 from the same material as the transparent portion 391. In other words, since the outer shell 39e can be molded from a single material, the material cost and processing cost of the outer shell 39e can be reduced, and the processability is improved, and improved product quality can be expected.

In the case of the lamp 3 according to embodiment 1 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 located on the Z2 side of the base 34 among the mounting portions 392 of the outer casing 39 must be highly reflective. In this case, the outer casing 39 must 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 applying the covering member 36e having a highly reflective surface as in the lamp 3e according to embodiment 2, the cost of the outer casing 39e can be reduced.

Embodiment 3.
The lighting device 301 according to the third embodiment is obtained by modifying the covering member 36 and the outer casing 39 of the lamp 3 in the lighting device 1 according to the first embodiment. The lighting device 301 according to the third embodiment will be described mainly with respect to the modifications made to the lighting device 301 according to the first embodiment. Furthermore, in the drawings, parts of the lighting device 301 according to the third embodiment that have the same functions are denoted by the same reference numerals as those in the drawings used in the description of the first embodiment.

Figure 18 is a cross-sectional view showing the main part of the lamp 3f according to the third embodiment. Figure 18 shows a cross-section corresponding to Figure 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. In other words, the reflectance of light in the visible light band of the surface facing the transparent portion 391 side of the covering member 36f is formed to be at least higher than the transparent portion 391 of the outer shell 91. In addition, the outer shell 39f is formed such that the holding portion 393f located on the Z2 side of the base 34 of the mounting portion 392f is 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 a high reflectance. By configuring in this way, the outer shell 39f can reduce the material cost of the outer shell 39 without reducing the light utilization efficiency because at least the holding portion 393f of the mounting portion 392f, which is highly reflective, is formed to be short. The outer shell 39 also reduces the amount of material used, which contributes to the weight reduction of the luminaire 3f. The weight reduction of the luminaire 3f not only simplifies packaging for shipping, reduces the burden of installation, and reduces the excessive burden on the fixture and construction section, but is also expected to simplify the connector 60.

Note that the embodiments of the present disclosure are not limited to the above-described embodiments, and various modifications are possible as necessary.

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 unit, 32 Substrate, 32a Mounting surface, 32b Joining 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 shell, 39e Outer shell, 39f Outer shell, 40 Power supply, 50 Wire holder, 60 Connector, 80 Wire arrangement tool, 86 Adhesive, 200 Mounting part, 201 Illumination device, 202 Slope, 301 Illumination device, 340 Base, 345 First surface, 346 Second surface, 350 Connector attachment hole, 351 Slide hole, 351a Fixing piece, 352 Wire arrangement tool attachment hole, 357 Wire holder fixing hole, 362 Extension, 363 Connection, 363a Connection, 363a-1 Connection, 363b Connection, 363c Connection, 364 End connection, 365 Penetration, 366 Outer periphery side, 366a Outer periphery side, 366a-2 Outer periphery side, 366b-2 Outer periphery side, 367 End, 391 light transmitting portion, 392 mounting portion, 392e mounting portion, 392f mounting portion, 393 holding portion, 393e holding portion, 393f holding portion, 394 engagement portion, 602 guide claw, 603 slide piece, 800 end protrusion, 801 mounting claw, 802 base, 803 claw portion, 804 intermediate protrusion, 805 substrate portion, 806 area.

Claims (9)

a substrate on which a light emitting element is mounted on a mounting surface;
a base having a first surface that is bonded to a bonding surface that is a surface opposite to the mounting surface of the board and at least a portion of which is covered by the board, and a through hole that penetrates from the first surface to a second surface that is a surface opposite to the first surface ;
a covering member disposed between an outer periphery of the substrate and the first surface so as to overlap the through hole ;
The covering member includes:
a plurality of through-holes in which an adhesive for bonding the bonding surface and the first surface is disposed are formed in the portion covered by the substrate;
The covering member is
The joining surface and the first surface are joined by the adhesive disposed in the through-hole, thereby holding the lamp on the base . The covering member is
The lamp according to claim 1 , wherein a part of the outer circumferential side of the covering member is disposed in an area covered by the substrate, and another part of the outer circumferential side is disposed in an area not covered by the substrate. The covering member is
A connection portion is provided between the plurality of through-holes,
At least a portion of the connection portion is
The lamp according to claim 2 , wherein the through hole of the base overlaps with the through hole. At least a portion of the connection portion is
The lamp according to claim 3 , which is joined to the joining surface of the substrate by the adhesive. At least a portion of the connection portion is
The lamp according to claim 3 or 4 , wherein the lamp is joined to the first surface of the base by the adhesive. an outer shell having a light-transmitting portion covering the light-emitting element;
The outer shell portion is
A mounting portion is provided to be attached to the base,
The outer peripheral side portion of the covering member is
The lamp according to any one of claims 1 to 5 , which is disposed between the first surface and the mounting portion. The mounting portion of the outer shell is
When attached to the base, the support has a holding portion disposed on the first surface side and an engaging portion disposed on the second surface side,
The surface of the holding portion facing the light transmitting portion is
The lamp according to claim 6 , wherein the reflectance of light at least in the visible light band is higher than that of the light transmitting portion. The surface of the covering member facing the light transmitting portion is
8. The lamp according to claim 6 , wherein the reflectance in at least the visible light band is higher than that of the light-transmitting portion. A lamp according to any one of claims 1 to 8 ,
A lighting device comprising: a lighting fixture in which the lamp is mounted.

Images