WO2012026144A1

WO2012026144A1 - Embedded illumination structure

Info

Publication number: WO2012026144A1
Application number: PCT/JP2011/054239
Authority: WO
Inventors: 大野　達司; 小泉　秀樹; 田中　敏裕
Original assignee: パナソニック株式会社
Priority date: 2010-08-25
Filing date: 2011-02-25
Publication date: 2012-03-01
Also published as: JP5486438B2; JP2012048920A; CN103026124A

Abstract

In an embedded illumination structure in which an illumination device is embedded between a first plate-shaped member and a second plate-shaped member, the illumination device includes: a light source section having a light emitting surface from which light is emitted; and an illumination cover that is arranged so as to face the light emitting surface of the light source section and through which the light emitted from the light source section passes. The illumination cover has a slanted section formed thereon. The slanted section is formed on the surface opposing the light source section and/or the surface on the opposite side therefrom, is located in a section on the side of the first plate-shaped member, and is adjusted such that the light emitted from the light emitting surface of the light source section is refracted by the slanted section on the illumination cover and the irradiation direction of the light is directed toward the second plate-shaped member.

Description

Built-in lighting structure

The present invention relates to a built-in lighting structure in which a lighting device is incorporated.

Conventionally, in a built-in lighting structure, for example, a ceiling built-in lighting structure in which a lighting device is built between two ceiling materials is known. For example, an illuminating device described in Japanese Patent Publication No. 2001-152681 includes a box-shaped body that stores and holds a fluorescent lamp, and a flat-shaped lighting cover that is attached to the lower surface of the box-shaped body. It is built in between the bathtub side and the washroom side in the ceiling part.

In the ceiling built-in lighting structure described above, the interior of the bathroom is illuminated by a fluorescent lamp in a box-like body via a lighting cover, and the space on the bathtub side and the space on the washing room side are illuminated with substantially equal brightness. Has been. However, as for bathroom lighting, the bath space is made brighter so that the bather can easily wash and wash the hair, and the bather can relax and soak in the bathtub. It is desirable not to make it too bright. In order to control the light distribution such as changing the brightness in the bathroom depending on the location with a single lighting device, for example, a fine prism shape may be applied to the lighting cover. However, since the lighting cover of the lighting device incorporated in the ceiling of the bathroom unit is generally a long extrusion molded body of about 2 m, there is a problem that it is difficult to give a fine prism shape with high accuracy.

The present invention has been made in view of the circumstances as described above, and it is an object of the present invention to provide a built-in lighting structure with a light distribution control with a simpler structure that can be incorporated into a ceiling, for example. .

In order to solve the above problems, the built-in lighting structure of the present invention is characterized by the following.

The present invention relates to a built-in lighting structure in which an illuminating device is incorporated between a first plate-like member and a second plate-like member, and the illuminating device has a light source section having a light emitting surface for emitting light, An illumination cover that is disposed so as to face the light emitting surface of the light source unit and through which the light emitted from the light source unit is transmitted. The illumination cover includes an inclined portion, and the inclined portion is provided on the light source unit. The light emitted from the light emitting surface of the light source portion is refracted by the inclined portion of the illumination cover, which is formed on at least one of the facing surface and the opposite surface and is positioned on the first plate member side portion. The irradiation direction is controlled so as to be closer to the second plate member.

In this built-in lighting structure, the inclined portion of the lighting cover is preferably formed of a convex curved surface having a substantially arc shape in cross section.

This built-in lighting structure is a ceiling built-in lighting structure in which a lighting device is incorporated between two ceiling members, and the two ceiling members are a first plate member and a second plate member. The light source unit includes a light source and a light guide material having a light emitting surface that emits light from the light source, and the illumination cover is disposed to face the light emission surface of the light guide material. The convex curved surface is formed on at least one of the surface facing the light guide material and the opposite surface, and the light emitted from the light emitting surface of the light guide material is refracted by the convex curved surface of the lighting cover. It is preferable that the irradiation direction is controlled so as to be closer to the second plate member.

Further, in this built-in illumination structure, the illumination cover is formed so that the surface facing (facing) the light guide material (light source unit) and the surface on the opposite side thereof are substantially parallel in the portion on the second plate-like member side. It is preferable that

In this built-in illumination structure, the illumination cover includes a first plate in a portion where the surface facing (facing) the light guide member (light source unit) and the opposite surface are on the second plate member side. It is preferable that it is asymptotic toward the 2nd plate-shaped member from a sheet-like member.

In this built-in illumination structure, the light emitting surface of the light guide material is preferably a convex curved surface having a substantially semicircular arc shape in cross section.

In this built-in lighting structure, it is preferable that the inclined portion of the lighting cover is formed along the long direction of the lighting cover.

Further, in this built-in lighting structure, the lighting cover is preferably formed so that the shape of the portion on the first plate-like member side and the shape of the portion on the second plate-like member side are asymmetric. Moreover, it is preferable that the thickness of the part by the side of the 1st plate-shaped member is thinner than the thickness of the part by the side of the 2nd plate-shaped member.

Further, in this built-in lighting structure, the lighting device further includes a case body that holds the light source unit, and the case body includes a pair of side plates configured such that the light source unit is disposed between themselves, Engagement recesses are formed on the outer side surfaces of the pair of side plates, the lighting cover includes a pair of locking claw pieces, and the pair of locking claw pieces protrude from both side end portions of the surface facing the light source unit. The formed lighting cover is preferably attached to the case body by locking the pair of locking claw pieces to the engaging recesses of the pair of side plates.

According to the present invention, for example, a built-in lighting structure that can be incorporated into a ceiling and is controlled for light distribution can be made a simpler structure.

FIG. 1A is a perspective view showing an embodiment of a ceiling built-in lighting structure using the built-in lighting structure of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. 1B is a sectional view taken along line BB in FIG. 1A. FIG. It is a schematic diagram for demonstrating the light distribution of the light which permeate | transmitted the illumination cover. It is a perspective view of a light source unit. It is a disassembled perspective view of an illuminating device. It is a perspective view explaining attachment to the case body of a light source unit. It is a perspective view explaining attachment of an illuminating device. 8A and 8B are schematic views showing another embodiment of the built-in illumination structure of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A is a perspective view showing an embodiment of a ceiling built-in lighting structure using the built-in lighting structure of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. 2 is a cross-sectional view taken along line BB of FIG. 1A. FIG. 3 is a schematic diagram for explaining the light distribution of the light transmitted through the illumination cover of the present embodiment. FIG. 4 is a perspective view of the light source unit of the present embodiment, and FIG. 5 is an exploded perspective view of the illumination device of the present embodiment. FIG. 6 is a perspective view illustrating attachment of the light source unit of the present embodiment to the case body, and FIG. 7 is a perspective view illustrating attachment of the lighting device of the present embodiment.

The ceiling material 40 is a component of the ceiling of a bathroom unit or the like. In this embodiment, the ceiling material 40 includes two ceiling materials 40 (first ceiling material and second ceiling material) and the lighting device 1. Is configured. In the present embodiment, the first ceiling material corresponds to the first plate member, and the second ceiling material corresponds to the second plate member. The two ceiling members 40 each constitute a ceiling on the bathtub 61 side and a ceiling on the washing place 64 side of the bathroom unit 60, and the lighting device 1 constitutes a ceiling at a boundary portion between the bathtub 61 side and the washing place 64 side.

As shown in FIG. 7, each ceiling member 40 is formed in a rectangular shape using a metal such as a steel plate or an aluminum plate, or a synthetic resin, and has a four-side end portion (four sides) of the face plate portion 41 whose lower surface is exposed in the bathroom. ) A flat plate-like sandwiching piece 42 that protrudes toward the back side (upper side) is formed in one of 41a so as to be bent over its entire length. The sandwiching piece 42 is provided with a positioning hole 46 at one location in the center of the longitudinal direction, and through holes 45 are provided at predetermined intervals at four locations in the longitudinal direction below the positioning hole 46. The positioning holes 46 and the through holes 45 are holes into which rod-shaped positioning members 70 and fixing members 50 described later are inserted, respectively, and the number, position, and the like are not particularly limited. For example, if the lighting device 1 can be attached to the sandwiching piece 42, the positioning holes 46 may be provided at a plurality of locations, or may be provided below the through holes 45. The through-hole 45 can also be configured as a fixing tool insertion hole formed inside the positioning member 70 that is inserted into the positioning hole 46. That is, a fixing tool insertion hole for inserting the fixing tool 50 may be formed in the positioning member 70.

One of the two ceiling members 40 (in this embodiment, the first ceiling member) is provided with an inspection port 44 to which an inspection lid 43 can be detachably attached. The two ceiling members 40 are arranged so that the sandwiching pieces 42 face each other, and the lighting device 1 is attached between the sandwiching pieces 42 facing each other.

The lighting device 1 is a glowing line illumination linearly (elongated rectangular shape), and the light source unit 10, a light guide member 2 which emits by receiving the light from the light source unit 10, emitted from the light guide member 2 And an illumination cover 30 through which the transmitted light is transmitted. Moreover, the case body 20 which accommodates the light guide material 2 and the light source unit 10 is also provided. The light guide material 2 may be singular or plural, and in the case of plural, the light guide members 2 are arranged in the longitudinal direction and are accommodated in the case body 20. In the present embodiment, as shown in FIG. 5, four light guide members 2 are arranged in the longitudinal direction, they are arranged continuously so that the ends of adjacent light guide member 2 abut each other. The overall length in the longitudinal direction substantially coincides with the length of one side of the ceiling member 40 on which the sandwiching piece 42 is formed. Although the four light source units 10 are provided corresponding to the number of the light guide members 2, the number of light source units 10 may be four or less as long as the light guide members 2 are continuously arranged in the longitudinal direction. In the present embodiment, the light source unit is configured by the four light source units 10 and the four light guide members 2. Moreover, in this embodiment, the light emission surface 2b of the light guide material 2 mentioned later is a light emission surface of a light source part.

It is preferable to use the light source 11 and the light guide material 2 in the light source section as in the present embodiment, since light with less uneven emission can be emitted from the light emitting surface of the light source section. The light source unit is not limited to the combination of the light guide member 2 and the light source unit 10. For example, as the light source unit, a plurality of LEDs arranged in a line may be used, or a fluorescent lamp may be used as the light source unit.

The light guide 2 is made of a material having a high refractive index, such as a synthetic resin such as acrylic resin or polycarbonate resin, or glass. The light guide member 2 has a long side having a substantially rectangular shape in cross-section in which one side surface on the short side is an incident surface 2a and one side surface on the long side is a light emitting surface 2b that emits light as illumination light in the indoor space. Consists of members. More specifically, it has a wedge shape with a pair of opposite sides of the long side toward the side surface of the opposite side from the incident surface 2a is asymptotic, one of the pair of side surfaces asymptotic is a light emitting surface 2b The By adopting the wedge shape, attenuation due to repeated reflection of light incident from the incident surface 2a can be suppressed. In order to enhance this effect, a light guide pattern for diffusing and deriving light can be provided on the side surface opposite to the light emitting surface 2b among the pair of side surfaces asymptotically. The light guide pattern is formed, for example, by sticking a reflective sheet or printing or depositing a reflective substance on the side surface opposite to the light emitting surface 2b. The light guide pattern can also be formed by groove processing or forming a groove in a direction orthogonal to the longitudinal direction of the light guide material 2. Such a light guide pattern can be provided over the entire length of the light guide member 2 in the longitudinal direction.

As shown in FIG. 4, the light source unit 10 includes a light source 11 such as an LED, a substrate 12, and a substrate case 13 that accommodates the substrate 12, and is detachable in the vertical direction as shown in FIG. Housed in the case body 20. If a long-life LED is used as the light source 11, maintenance work can be reduced.

One or a plurality of light sources 11 are mounted on the substrate 12, and the substrate 12 is mounted on the substrate case 13 so that the light sources 11 are arranged facing (facing) the incident surface 2 a of the light guide 2. The substrate case 13 is attached to the case body 20.

The case body 20 is made of a rigid member such as a metal such as aluminum or a synthetic resin, and has a pair of opposed flat plate-like long side plates 23 and a flat plate-like long connection that connects the pair of side plates 23. It is formed integrally with the plate 21. Specifically, the pair of side plates 23 are arranged substantially parallel to each other, the connecting plate 21 is arranged between the pair of side plates 23 so as to be orthogonal to the side plates 23, and the case body 20 is substantially H-shaped in cross section. Is formed. By setting it as such a shape, the intensity | strength of case body 20 itself is effectively ensured, and the bending and deformation | transformation of case body 20 are suppressed. The rigidity required for attaching the lighting device 1 to the ceiling member 40 is more effectively ensured. Moreover, it can also serve as a reinforcing material for the ceiling material 40. The strength of the light guide member 2 housed in the case body 20 is also reinforced, and the light guide member 2 has a function of suppressing bending and deformation.

The case body 20 is arranged between the clamping piece 42 two are formed in each of the ceiling material 40, (the opposite surface to the opposite side plate-side surface) of each outer surface of each side plate 23 It abuts on the inner side surface of the clamping piece 42 (the surface on the opposite clamping piece side).

Each side plate 23 has a flat plate-like support piece 24 that protrudes inward (in a direction toward the opposite side plate) at the lower end portion over the entire length in the longitudinal direction. The support piece 24 is formed substantially parallel to the connecting plate 21. The support pieces 24 of the side plates 23 are formed to face each other, and the light guide material 2 is sandwiched and supported between the support pieces 24. In addition, on the inner side surface (surface on the side plate on the opposite side) of each side plate 23, a lower portion is recessed inward, and a mounting portion 28 that supports the light source unit 10 is formed.

As shown in FIG. 1B, the light guide material 2 is attached to the support piece 24 in the lower region Y that is formed below the connection plate 21 and opens downward in the region surrounded by the connection plate 21 and the pair of side plates 23. It is supported and stored. On the other hand, in the upper region X formed on the upper side of the connecting plate 21 and opened upward, the positioning member 70 is inserted from the outside through the positioning hole 46 of the holding piece 42 described above, and the case body 20 is held by the holding piece 42. Can be attached to. Further, the fixing tool 50 is inserted from the outside through the through hole 45 of the sandwiching piece 42 so that the case body 20 is fixed to the sandwiching piece 42. As a result, the lighting device 1 is attached to the ceiling member 40 without the positioning member 70 and the fixture 50 and the light guide member 2 interfering with each other.

Distance d between the support piece 24 which is formed opposite to the side plates 23 of the case body 20 is slightly smaller set than the width D of the Shirubekozai 2, the light emitting surface 2b of Shirubekozai 2 support The piece 24 is made as unshielded as possible. Each support piece 24 is provided with a protrusion 25 on the upper end portion to form a stepped portion 26. Since the light guide material 2 is sandwiched between the step portions 26 of the support pieces 24, the installation stability of the light guide material 2 is improved and the case body 20 is stably stored.

The light guide 2 is housed in the case body 20 by being inserted into the lower region Y from one end of both ends of the case body 20 so that the light emitting surface 2b of the light guide 2 faces the indoor space. Made by.

Each side plate 23 of the case body 20 is provided with a positioning hole 37 of the positioning member 70 corresponding to the positioning hole 46 of the clamping piece 42 at a substantially central position in the longitudinal direction. Each side plate 23 is provided with through holes 27 of the fixing tool 50 corresponding to the through holes 45 of the sandwiching pieces 42 at four positions in the longitudinal direction below the positioning holes 37. The lighting device 1 is attached to the holding piece 42 by inserting the positioning member 70 into the positioning holes 37 and 46 of the side plate 23 and the holding piece 42, and the fixing tool 50 is attached to the through

holes

27 and 45 of the side plate 23 and the holding piece 42. The lighting device 1 is fixed to the clamping piece 42 by being inserted and fastened. In order to suppress deformation of the case body 20 at the time of fastening of the fixing tool 50 as much as possible, it is preferable to provide a through hole 27 in the vicinity of the connecting plate 21. A positioning hole 37 and a through hole 27 are provided in the side plate 23 below the connecting plate 21, and a positioning member 70 is provided in the lower region Y through the positioning holes 37 and 46 and the through

holes

27 and 45 of the side plate 23 and the clamping piece 42. It is also possible to attach and fix the lighting device 1 to the holding piece 42 by inserting the fixing tool 50. In this case, the positioning member 70 and the through hole 27 are provided in the side plate 23 at a position where the light guide member 2 housed in the lower region Y does not interfere with the positioning member 70 and the fixing tool 50 to be inserted.

In the present embodiment, the height of the sandwiching piece 42 (the length in the direction from the ceiling surface 41b to the back of the ceiling (rear surface)), the case so that the lighting device 1 attached to the sandwiching piece 42 does not protrude from the ceiling surface 41b. The height of the body 20 (the length in the direction from the ceiling surface 41b to the back surface of the ceiling) and the like are set. Similarly, the shapes and positions of the positioning holes 37 and 46 and the through

holes

27 and 45 of the side plate 23 and the holding piece 42 are set so that the lighting device 1 does not protrude from the ceiling surface 41b. It is preferable that the height of the above-described member, the shape of the hole, the position, and the like are set so that the lighting device 1 is flush with the ceiling surface 41b. In the present embodiment, the lighting device 1 includes a light cover 30 described later, as the indoor space side of the plane of the light cover 30 does not protrude from the ceiling surface 41b, the height and hole shapes of the members described above, the position Etc. are set. In addition, the illuminating device 1 may protrude from the ceiling surface 41b (downward of FIG. 1A), and conversely may be retracted behind the ceiling surface 41b. Speaking of design properties, for example, it may be better for the lighting cover 30 to protrude from the ceiling surface 41b.

It is preferable that the shape of the positioning holes 37 and 46 of the side plate 23 and the sandwiching piece 42 is substantially the same as the outer shape of the positioning member 70. At this time, it is preferable that the clearance formed between the positioning holes 37 and 46 and the positioning member 70 when the positioning member 70 is inserted into the positioning holes 37 and 46 is as small as possible. For example, when the positioning member 70 has a cylindrical shape, it is considered that the positioning holes 37 and 46 are formed in a circular shape slightly smaller than the outer diameter of the positioning member 70. The shape of the through

holes

27 and 45 of the side plate 23 and the sandwiching piece 42 is not particularly limited as long as the lighting device 1 can be fixed to the sandwiching piece 42 by fastening the fixing tool 50. For example, the shape of the through

holes

27 and 45 is such that the clearances formed between the through

holes

27 and 45 and the fixing tool 50 when the fixing tool 50 is inserted are the positioning holes 37 and 46 and the positioning member 70 described above. It can be made into a long hole shape that is larger than the clearance between the two.

In the present embodiment, the side plate 23 of the case body 20 is provided with a flat locking piece 29 protruding outward from the outer surface, and the locking piece 29 is hooked on the tip 42a of the holding piece 42 and the case The body 20 is placed on and supported by the sandwiching piece 42. Thereby, when attaching the illuminating device 1 to the ceiling material 40, fall of the case body 20 can be prevented. It also has the advantage of improving workability.

The illumination cover 30 is disposed so as to face the light emitting surface 2 b of the light guide member 2, and is attached to the lower portion of the side plate 23 of the case body 20 so as to cover the light guide member 2. Light cover 30 is an elongated member which is produced by extrusion molding of a transparent synthetic resin such as acrylic resin, polycarbonate resin, having substantially the same length as the entire length of the case body 20, a ceiling material 40 At the same time, the ceiling of the bathroom unit 60 is formed.

The lighting cover 30 is provided with an optical function, and the lighting effect of the lighting device 1 is enhanced. For example, as shown in FIG. 1, the surface 82 opposite to the surface (opposing surface 81) facing the light guide material 2 of the illumination cover 30 is a flat surface, and the light emitting surface 2 b (light source unit) of the light guide material 2. Of the light emitting surface). On the other hand, as shown in FIG. 1B, the opposing surface 81 is formed with a convex curved surface 83 having a substantially ¼ arc shape in a cross-sectional view at a portion on the ceiling material 40 side on the bathtub 61 side. That is, in the present embodiment, the inclined surface is formed on the facing surface 81 by the convex curved surface 83. The facing surface 81 is formed with a surface 84 that is continuous with the convex curved surface 83 from the ceiling material 40 on the bathtub 61 side toward the ceiling material 40 on the washing place 64 side, and a portion on the ceiling material 40 side on the bathtub 61 side. The part on the ceiling material 40 side on the washing place 64 side is continuous. A surface 84 continuing to the convex curved surface 83 is a flat surface and is formed substantially parallel to the opposite surface 82. The inclined portion (convex curved surface 83) of the illumination cover 30 is formed along the longitudinal direction of the surface on which the inclined portion is formed. That is, the illumination cover 30 is formed in the same shape in the cross-sectional view in the long direction (longitudinal direction of the case body 20). In the present embodiment, the convex curved surface 83 is configured by a part of the surface of the cylinder whose height direction is the long direction of the illumination cover 30. In this way, the surface on which the convex curved surface 83 is formed (opposing surface 81 in this embodiment) is asymmetric in the shape of the portion on the ceiling material 40 side on the bathtub 61 side and the portion on the ceiling material 40 side on the washing place 64 side. ing. That is, in the lighting cover 30, the shape of the portion on the ceiling material 40 side on the bathtub 61 side and the shape of the portion on the ceiling material 40 side on the washing place 64 side are asymmetric. In the lighting cover 30, the thickness of the portion on the ceiling material 40 side on the bathtub 61 side is thinner than the thickness of the portion on the ceiling material 40 side on the washing place 64 side.

By using the illumination cover 30 having such a structure, the space on the washing place 64 side in the bathroom unit 60 can be illuminated more brightly than the space on the bathtub 61 side. FIG. 3 is a schematic diagram for explaining the light distribution of the light transmitted through the illumination cover 30, in which the light guide material 2 and the illumination cover 30 disposed facing the light emitting surface 2 b are simplified and described. ing. The arrows in the figure indicate the direction of light irradiation.

Light emitted from the light emitting surface 2b of the Shirubekozai 2 is a light diffused by the light guide pattern, light directed to these bath 61 side is the irradiation direction is refracted by the convex surface 83 of the light cover 30 Head toward the washing area 64. On the other hand, light directed toward the washing area 64 side of the light emitted from the light emitting surface 2b of the Shirubekozai 2, since the surface 84 that is continuous with the convex curved surface 83 and the surface 82 on the opposite side is substantially parallel to illumination Even if it passes through the cover 30, it goes to the washing place 64 as it is. Thus, the light passing through the illumination cover 30 is directed toward the washing place 64, and in the bathroom unit 60, the intensity of the light radiated to the space on the washing place 64 side is in the space on the bathtub 61 side. It becomes higher than the intensity of the irradiated light, and the space on the washing place 64 side becomes brighter. When the illumination cover 30 is not provided as in the present embodiment, the light emitted from the light emitting surface 2b of the light guide member 2 is diffused light, so the space on the washing place 64 side and the space on the bathtub 61 side are approximately equal in brightness. It will be illuminated. Further, the lighting cover 30 has a simple structure that is easy to extrude, such as a surface 84 that is continuous with the convex curved surface 83 and a surface 82 on the opposite side, and can be manufactured at a low cost. Manufacturing is stabilized and quality reliability is improved. Moreover, since the inclined part (convex curved surface 83) is formed in the illumination cover 30, the additional member for controlling light distribution becomes unnecessary.

Convex surface 83 of the light cover 30 (inclined portion) may be formed in the ceiling material 40 side portion of the tub 61 side of the opposing surface 81 not only the opposite surface 82, opposite surface 82 It may be formed only. In any case, light distribution control is possible, and the space on the washing place 64 side can be brightened. In consideration of design properties such as providing a clean indoor space while suppressing the presence of the lighting device 1 observed from inside the bathroom unit 60, and the cleaning in the bathroom, the convex curved surface 83 is formed only on the opposing surface 81, The opposite surface 82 is preferably a flat surface.

In addition, the shape of the inclined portion of the illumination cover 30 is not limited to a ¼ arc shape in a cross-sectional view. For example, the inclined portion of the illumination cover 30 may be formed in a 1/8 arc shape in a cross-sectional view. Alternatively, the inclined portion of the illumination cover 30 may have another curved surface shape such as a hyperbola shape, a parabola shape, or an elliptic arc shape in a cross-sectional view. Further, the inclined portion of the lighting cover 30 may be a flat surface inclined with respect to the opposite surface 82.

As shown in FIG. 1B, the lighting cover 30 of the present embodiment has a pair of opposing claw pieces 31 at opposite ends. The locking claw piece 31 protrudes upward from the facing surface 81 of the lighting cover 30 and is formed integrally with the lighting cover 30, and a convex portion 32 protruding inward is formed at the tip thereof. . On the other hand, on the outer side surface of the side plate 23 to which the illumination cover 30 is mounted, an engagement recess 33 is formed in which the lower portion is recessed inward and the protrusion 32 of the locking claw piece 31 is hooked. The engagement recess 33 is formed between the support piece 24 and the placement portion 28. The projection 32 of the locking claw piece 31 is hooked on the engagement recess 33, the illumination cover 30 is mounted, the lower region Y is closed, and the light guide material 2 is covered, thereby improving waterproofness and design. .

In order to further improve waterproofness, a packing 80 that contacts the clamping piece 42 may be provided on the back side (clamping piece side) of the locking claw piece 31. When the lighting device 1 is sandwiched between the opposing sandwiching pieces 42, a gap formed between the illumination cover 30 and the sandwiching piece 42 is shielded by the packing 80, and water tightness is ensured. The packing 80 is affixed to the stepped portion 36 formed by the protruding portion 35 formed by protruding the side end portion of the lighting cover 30 outward and the locking claw piece 31.

Further, in the present embodiment, as shown in FIG. 5, end caps 39 formed of a rigid member such as a synthetic resin are fitted to both ends of the case body 20. As a result, the gaps at both ends of the case body 20 are closed.

Next, attachment of the light source unit 10 to the case body 20 will be described.

The attachment of the light source unit 10 is performed after the light guide member 2 is accommodated in the case body 20.

As shown in FIG. 6, the substrate case 13 constituting the light source unit 10 includes a box-shaped light source storage portion 14 that has an opening on the incident surface 2 a side of the light guide 2 and stores the substrate 12, and a case body 20. And a holding portion 15 that holds the light source storage portion 14 are connected to each other and formed in a substantially L shape in a side view. The holding portion 15 is formed by extending a pair of side plates 17 constituting the light source storage portion 14 upward, and a pair of through holes 16 are formed in the upper part of the pair of side plates 17. The connection plate 21 of the case body 20 is cut out at a portion where the light source unit 10 is mounted to form an opening 22, and the upper region X and the lower region Y communicate with each other through the opening 22. The light source unit 10 is attached to the case body 20 by inserting the light source unit 10 into the opening 22 of the connecting plate 21 from above and pushing the lower end portion of the substrate case 13 until it contacts the mounting portion 28 of the side plate 23. Accordingly, the light source storage portion 14 of the light source unit 10 is disposed in the lower region Y, the holding portion 15 of the light source unit 10 is disposed in the upper region X, and the light source unit 10 is stored in the case body 20. The light source storage unit 14 disposed in the lower region Y faces the incident surface 2 a of the light guide member 2 stored in the same lower region Y, and from the light source 11 mounted on the substrate 12 of the light source storage unit 14. Light is emitted toward the incident surface 2 a of the light guide member 2.

In the side plate 23 of the case body 20, a through hole 38 corresponding to the through hole 45 of the holding piece 42 is provided above the locking piece 29. With the board case 13 being housed in the case body 20, the connecting member 53 such as the pin 54 and the screw is inserted into the holding portion 15 and the through

holes

16 and 38 of the side plate 23, so that the case body 20 can be stably attached. it can.

In the present embodiment, the light source unit 10 can be easily detached upward from the case body 20 by removing the coupling tool 53 from the through

holes

16 and 38 of the holding portion 15 and the side plate 23, and the case body 20. It is also possible to install by inserting from above to below. For this reason, it is excellent in maintainability and workability, such that the light source unit 10 can be easily replaced and inspected.

The lighting device 1 having the above-described configuration is attached to the ceiling member 40 when the ceiling member 40 is attached to the plurality of wall panels 62 constituting the wall of the bathroom unit 60, for example.

The bathroom unit 60 is generally configured by assembling a waterproof pan, a bathtub 61, a wall panel 62, and a ceiling material 40 on site. For example, a wall panel placing portion is formed on the upper end of the outer end of the waterproof pan, and a plurality of wall panels 62 are placed on the wall panel placing portion. Next, the bathroom unit 60 is assembled by being mounted on the wall panel 62 so as to close the upper opening 63 of the space surrounded by the wall panel 62 with the ceiling material 40. In the present embodiment, the lighting device 1 is attached to the ceiling member 40 when the ceiling member 40 is attached. Below, the attachment to the ceiling material 40 of the illuminating device 1 is demonstrated.

First, as shown in FIG. 7, one ceiling member 40 of the two ceiling members 40 is arranged such that the three-side end portion 41 a where the clamping piece 42 is not formed coincides with the upper end portion 62 a of the wall panel 62. Place and install. That is, one ceiling member 40 (for example, the first ceiling member) is composed of three side end portions 41a in which the clamping piece 42 is not formed among the four side end portions 41a and the upper end portion 62a of the wall panel 62. It arrange | positions so that it may correspond and it attaches to the wall panel 62. FIG. Next, the lighting device 1 is arranged by bringing the side plate 23 of the case body 20 into contact with the sandwiching piece 42 so that the locking piece 29 of the case body 20 is caught by the tip end portion 42a of the sandwiching piece 42 of the ceiling member 40. In the case where the locking piece 29 is not provided in the lighting device 1, both end portions of the lighting device 1 are placed on the pair of opposing wall panels 62 so that the side plate 23 comes into contact with the holding piece 42. At this time, the lighting device 1 is in a state in which both ends thereof are supported by the pair of wall panels 62 and are bridged over the bathroom.

Next, the other ceiling member 40 is attached to the wall panel 62 so that the sandwiching piece 42 of the other ceiling member 40 (in this case, the second ceiling member) comes into contact with the side plate 23. Thus, the lighting device 1 is sandwiched between the sandwiching pieces 42 formed to face each of the one ceiling member 40 and the other ceiling member 40, and the upper opening 63 of the space surrounded by the wall panel 62 of the bathroom. Is closed by the two ceiling members 40 and the lighting device 1. Note that either the first ceiling material or the second ceiling material may be attached first.

Next, the lighting device 1 is placed between the two ceiling members 40 using the rod-shaped positioning member 70 from the inside of the bathroom unit 60 through the inspection port 44 of the ceiling member 40 (in this embodiment, the first ceiling member). Attach to and temporarily fix.

The positioning member 70 is formed of a rigid material such as metal and has sufficient strength. The lighting device 1 is sandwiched between the sandwiching pieces 42 of the two ceiling members 40 and is inserted into the positioning holes 37 and 46. In this state, both ends are long enough to protrude outward from each sandwiching piece 42. The positioning member 70 of this embodiment has a cylindrical shape, and both end portions have an inclined structure in which the outer diameter gradually decreases toward the tip. This inclined structure facilitates the insertion into the positioning holes 37 and 46, and may have an inclined structure only at one end. Of course, it does not have to have an inclined structure. The shape of the positioning holes 37 and 46 is formed in a circular shape according to the outer shape of the positioning member 70. The shapes of the positioning member 70 and the positioning holes 37 and 46 are not particularly limited. For example, the positioning member 70 may be a prismatic shape, and the positioning holes 37 and 46 may be rectangular.

The positioning member 70 is inserted into the positioning holes 37 and 46 in a state in which the lighting device 1 is sandwiched between the sandwiching pieces 42 of the two ceiling members 40, whereby the lighting device 1 is attached to the two ceiling members 40. Installed between. The positioning member 70 is inserted into the positioning holes 37 and 46 by the following method. That is, insert the one end of one of the ceiling material 40 (e.g., a first ceiling material) the positioning member 70 from the outside to the positioning hole 46 of the clamping pieces 42, the positioning of the case body 20 of the lighting device 1 The hole 37 and the other ceiling member 40 (in this case, the second ceiling member in this case) are sequentially inserted into the positioning holes 46 of the holding pieces 42. When the end portion of the positioning member 70 has an inclined structure, the end portion is inserted into the positioning hole 46 of the sandwiching piece 42 of one ceiling member 40, and the positioning hole 37 and the other of the case body 20 of the lighting device 1 are inserted. What is necessary is just to insert sequentially in the positioning hole 46 of the clamping piece 42 of the ceiling material 40 of this. By inserting the positioning member 70 into the positioning holes 37 and 46, the lighting device 1 is attached between the two ceiling members 40 and temporarily fixed. At this time, the lighting device 1 is attached in a state where the surface of the lighting cover 30 of the lighting device 1 on the indoor space side is substantially flush with the ceiling surface 41b.

Next, the lighting device 1 in a temporarily fixed state is fixed between the two ceiling members 40 using the fixing tool 50 including the bolts 51 and the nuts 52 from the inside of the bathroom unit 60 through the inspection port 44 of the ceiling member 40. To fix. Specifically, the lighting device 1 Insert the tip of the bolt 51 from the outside into the through hole 45 of the holding pieces 42 of one of the ceiling material 40 in temporarily fixed state (for example, the first ceiling material), The through hole 27 of the case body 20 of the lighting device 1 and the through hole 45 of the holding piece 42 of the other ceiling member 40 (in this case, the second ceiling member) are sequentially inserted. The lighting device 1 is fixed between the two ceiling members 40 by fastening the tip of the inserted bolt 51 with a nut 52 from the outside of the through hole 45 of the clamping piece 42 of the other ceiling member 40. .

Thus, the sandwiching piece 42 of the ceiling member 40 is illuminated by inserting the positioning member 70 into the positioning holes 37 and 46 in a state where the lighting device 1 is sandwiched between the sandwiching pieces 42 of the two ceiling members 40. The device 1 can be easily attached and temporarily fixed. By appropriately adjusting and setting the positions of the positioning holes 37 and 46, the surface of the lighting cover 30 of the lighting device 1 on the indoor space side is substantially flush with the ceiling surface 41b. It becomes possible to attach to. Further, the lighting device 1 can be positioned easily and accurately. Since the illuminating device 1 is attached to the clamping piece 42 by the positioning member 70 and temporarily fixed, the illuminating device 1 can be easily fixed by the fixing tool 50 without adjusting the position such as shifting the illuminating device 1 up and down and left and right. it can. The lighting device 1 can be easily fixed between the two ceiling members 40 so as not to protrude from the ceiling surface 41b, the presence of the lighting device 1 observed from the bathroom side is suppressed, and the interior space is clean. Can be imparted and the design can be improved.

The lighting device 1 attached between the two ceiling members 40 as described above has the washing space 64 side (in this embodiment) rather than the space on the bathtub 61 side (in this embodiment, the first ceiling material side). The light distribution is controlled so that the space on the second ceiling material side) is illuminated more brightly. Therefore, in the washing place 64, the bather can easily perform operations such as body washing and hair washing, and the usability is improved. In the bathtub 61, a calm space is realized such that the bather can relax and soak in the bathtub. The lighting device 1 has a simple structure in which the lighting cover 30 does not have a fine prism shape. Since the lighting cover 30 has a simple structure that can be easily extruded, it can be manufactured at a low cost, and the manufacturing is stabilized and the reliability of quality is improved.

Another embodiment of a ceiling built-in lighting structure using another built-in lighting structure of the present invention will be described. FIG. 8 is a schematic view showing another embodiment of the ceiling built-in lighting structure, in which a light guide material and a lighting cover arranged to face the light emitting surface are simplified. The same parts as those in the ceiling built-in illumination structure shown in FIGS. 1 to 7 are denoted by the same reference numerals, and description thereof is omitted.

In the embodiment of FIG. 8A, a surface 84 that continues to the convex curved surface 83 of the facing surface 81 of the lighting cover 30 linearly asymptotically approaches the surface 82 on the opposite side from the bathtub-side ceiling material toward the washing-room-side ceiling material. An inclined surface 85 is formed. The light guide 2 has the same shape as the light guide 2 in FIG. In other words, in the present embodiment, the illumination cover 30 has one ceiling on the other ceiling member 40 (second ceiling member) side where the surface facing the light guide member 2 of the light source unit and the surface on the opposite side thereof. It is asymptotic from the material 40 (first ceiling material) toward the other ceiling material 40 (second ceiling material). Here, the inclination of the inclined surface 85 is gentler than the inclination of the convex curved surface 83.

In this embodiment, of the diffused light emitted from the light emitting surface 2b of the light guide member 2, the light directed toward the bathtub is refracted by the convex curved surface 83 of the illumination cover 30, and the irradiation direction is directed toward the washing area. On the other hand, the light traveling toward the washing area is refracted on the inclined surface 85 of the illumination cover 30 as indicated by an arrow, and is condensed slightly toward the bathtub. Therefore, the light that has passed through the illumination cover 30 and travels toward the washing place is condensed slightly closer to the bathtub and the directivity is enhanced, and the space on the washing place side can be illuminated more effectively and brightly.

The inclined surface 85 may be formed not only on the facing surface 81 of the lighting cover 30 but also on the opposite surface 82, or may be formed only on the opposite surface 82.

In the embodiment of FIG. 8B, the light emitting surface 2b of the light guide member 2 is a convex curved surface having a substantially semicircular arc shape in a sectional view, and is formed in a rounded shape. The illumination cover 30 has the same shape as the illumination cover 30 of FIG.

In this embodiment, the light incident on the light guide member 2 is refracted and condensed on the light emitting surface 2b, and the light emitted from the light emitting surface 2b is prevented from diffusing and has increased directivity as indicated by arrows. ing. When such light with high directivity passes through the illumination cover 30, the light transmitted through the illumination cover 30 toward the washing area is also highly directional, and the space on the washing area side can be illuminated more effectively and brightly. it can.

Any embodiment has an advantage that energy can be saved because the brightness can be efficiently secured.

As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to said embodiment at all, and various changes are possible within the range which does not deviate from the summary. For example, the light cover shown in FIG. 8A and the light guide material shown in FIG. 8B may be combined. In the above embodiment, the light source unit of the lighting device is disposed to face the side surface on the short side of the light guide material. However, the light source unit may be disposed on the upper side of the light guide material. The shape may be a rectangular parallelepiped shape. Further, the light guide member 2 may have a quadrangular prism shape in which the incident surface 2a and the light emitting surface 2b are rectangular, and the surfaces intersecting the incident surface 2a and the light emitting surface 2b are trapezoidal. Further, the light guide member 2 may have a triangular prism shape in which the incident surface 2a and the light emitting surface 2b are rectangular, and the surfaces intersecting the incident surface 2a and the light emitting surface 2b are triangular.

Also, the number of ceiling materials (plate-like members) is not limited to two. Three or more ceiling materials (plate-like members) may be used.

The built-in lighting structure of the present invention can also be applied to ceilings other than bathroom units. Furthermore, the built-in illumination structure of the present invention can be incorporated in addition to the ceiling. For example, the built-in lighting structure of the present invention may be applied to a floor or a wall.

Claims

In a built-in illumination structure in which an illumination device is incorporated between a first plate member and a second plate member, the illumination device includes a light source unit having a light emitting surface for emitting light, and the light source unit. An illumination cover that is disposed so as to face the light emitting surface of the light source and transmits light emitted from the light source unit.
The lighting cover is formed with an inclined portion, and the inclined portion is formed on at least one of the surface facing the light source unit and the opposite surface thereof, and is a portion on the first plate-like member side. The light emitted from the light emitting surface of the light source unit is refracted by the inclined portion of the lighting cover, and the irradiation direction is controlled to be closer to the second plate member. Built-in lighting structure.
The built-in illumination structure according to claim 1, wherein the inclined portion of the illumination cover is formed of a convex curved surface having a substantially arc shape in cross section.
The built-in lighting structure is a ceiling built-in lighting structure in which the lighting device is incorporated between two ceiling members, and the two ceiling members are the first plate-like member and the second member. The plate-shaped member of
The light source unit includes a light source and a light guide material having a light emitting surface that emits light from the light source,
The lighting cover is disposed to face the light emitting surface of the light guide material,
The convex curved surface of the illumination cover is formed on at least one of a surface facing the light guide material and an opposite surface thereof, and light emitted from the light emitting surface of the light guide material is the illumination cover. The built-in illumination structure according to claim 2, wherein the built-in illumination structure is controlled such that the direction of irradiation is directed toward the second plate-like member by being refracted by the convex curved surface.
4. The lighting cover according to claim 3, wherein a surface facing the light guide material and a surface on the opposite side thereof are formed substantially parallel in a portion on the second plate-like member side. Built-in lighting structure.
The lighting cover has a surface facing the light guide member and a surface on the opposite side from the first plate member toward the second plate member in a portion on the second plate member side. The built-in lighting structure according to claim 3, which is asymptotic.
The built-in illumination structure according to any one of claims 3 to 5, wherein the light emitting surface of the light guide material is a convex curved surface having a substantially semicircular arc shape in a cross-sectional view.
3. The lighting cover according to claim 1, wherein a surface facing the light source part and a surface on the opposite side thereof are formed substantially in parallel at a portion on the second plate-like member side. Built-in lighting structure as described.
The lighting cover has a surface facing the light source unit and a surface on the opposite side thereof from the first plate member toward the second plate member at a portion on the second plate member side. The built-in illumination structure according to claim 1, wherein the built-in illumination structure is asymptotic.
The built-in lighting structure according to claim 1, wherein the inclined portion of the lighting cover is formed along a longitudinal direction of the lighting cover.
The said illumination cover is formed so that the shape of the part by the side of the said 1st plate-shaped member and the shape of the part by the side of the said 2nd plate-shaped member may become asymmetrical. Built-in lighting structure.
The built-in lighting structure according to claim 10, wherein the lighting cover has a thickness of a portion on the first plate-like member side that is thinner than a thickness of a portion on the second plate-like member side.
The illumination device further includes a case body that houses the light source unit,
The case body includes a pair of side plates configured such that the light source unit is disposed between the case bodies, and engagement concave portions are formed on outer surfaces of the pair of side plates,
The lighting cover includes a pair of locking claw pieces, and the pair of locking claw pieces are formed to protrude from both side end portions of the surface facing the light source unit,
2. The built-in illumination according to claim 1, wherein the lighting cover is attached to the case body by locking the pair of locking claw pieces to the engaging recesses of the pair of side plates, respectively. Construction.