JP2016154105A - Luminaire, installation structure of luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which hardly gives a glare feeling to a user about the light emitted from a light guide member.SOLUTION: A luminaire 1 includes a bar-like light guide member 2 and a casing 3 which extends in a length direction D1 of the light guide member 2 and in which the light guide member 2 is accommodated. The casing 3 includes a first surface 31 arranged along an installation object 8 and a second surface 32 which is an outer surface facing the opposite side from the first surface 31, when mounted on the installation object 8. An emission surface 21 which is a surface along the length direction D1 of the light guide member 2 faces backward and the second surface 32 side, and it faces a light outlet part 36 formed on the second surface 32 via an optical path 35. A rear edge part 37 of the light outlet part 36 is located being further separated from the emission surface 21 than a front edge part 38 of the light outlet part 36. On an inner surface 51 on the rear side of the optical path 35, a reflection part 45 is provided for reflecting a part of the light emitted from the emission surface 21 toward the light outlet part 36.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an illumination device and an installation structure of the illumination device.

  Patent Document 1 discloses an illumination device attached to a wall surface. This illuminating device includes a rod-shaped light guide member and a light source that emits light toward an end face in the length direction of the light guide member. The light guide member includes an emission surface along the length direction. The light incident from the end face in the length direction of the light guide member is configured to exit from the exit surface. This illuminating device is attached to a wall surface with the emission surface facing downward.

JP 2014-170681 A

  By the way, the said illuminating device has a possibility that the light radiate | emitted from the output surface of the light guide member may enter into a user's eyes directly, and a user may feel dazzling.

  This invention is made | formed in view of the said situation, Comprising: It makes it a subject to provide the illuminating device which a user does not feel dazzling light emitted from the light guide member, and the installation structure of an illuminating device.

  In order to solve the above-mentioned problems, a lighting device according to the present invention includes a rod-shaped light guide member, a casing extending in a length direction of the light guide member, and housing the light guide member, and a length of the light guide member. A light source that emits light toward an end of the direction, and a direction perpendicular to the length direction of the casing is a front-rear direction, and the casing is orthogonal to both the length direction and the front-rear direction of the casing A first surface arranged along an installation target, a second surface which is an outer surface facing the opposite side of the first surface, and a light exit portion formed on the second surface And an optical path leading to the light exit portion, and the light guide member is a surface along the length direction of the light guide member, and the light guide member extends from an end portion in the length direction of the light guide member. A light exit surface that emits light that has entered, the light exit surface facing rearward and the second surface side, It faces the light exit portion via a path, and the rear edge portion of the light exit portion is located farther from the light exit surface than the front edge portion of the light exit portion, and the inner surface on the rear side of the light path A reflection portion is provided that reflects a part of the light emitted from the light exit surface toward the light exit portion.

  Further, in the lighting device installation structure of the present invention, the lighting device is provided on the lower surface of the hanging door shelf provided along the wall in a state in which the light exit surface faces the lower side of the hanging door shelf and the wall side. It is characterized by that.

  The illuminating device according to the present invention illuminates the opposite side of the installation target with direct light that reaches the light exit portion from the light exit surface and indirect light that is reflected from the light exit surface by the reflection portion and reaches the light exit portion. be able to. In this case, the front side of the lighting device is brightly illuminated by the indirect light. Moreover, it is difficult for the direct light to enter the eyes of the user on the front side of the lighting device. For this reason, it is difficult for the user to feel that the light emitted from the light guide member is dazzling.

  Moreover, in the installation structure of the illuminating device which concerns on this invention, the lower side of a hanging cabinet can be illuminated with the direct light and indirect light which come out of the said illuminating device. In this case, the lower front side of the hanging cupboard where the user is located is brightly illuminated by the indirect light. In addition, the direct light is difficult to enter into the eyes of the user on the front side of the hanging cabinet. Therefore, it is difficult for the user to feel that the light guide member is dazzling.

FIG. 1 is a cross-sectional view showing a lighting device according to an embodiment of the present invention, with a plane orthogonal to the length direction taken as a cut surface. FIG. 2 is a perspective view seen from the side opposite to the first surface of the lighting device. FIG. 3 is a perspective view seen from the side opposite to the second surface of the lighting device. FIG. 4 is a side view showing the lighting device installed on the hanging cupboard. FIG. 5 is a side view showing the lighting device installed in the cabinet. FIG. 6 is a perspective view of an end portion in the length direction of the lighting device from which a cap is omitted.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a lighting device 1 according to this embodiment. 2 and 3 are perspective views of the lighting device 1.

  Examples of the installation object 8 that is an installation target of the lighting device 1 include a hanging cabinet 80 illustrated in FIG. 4 and a cabinet 81 illustrated in FIG. 5. Both the hanging cabinet 80 and the cabinet 81 are provided along the wall 90 of the room. In addition, the code | symbol 91 in FIG. 4 is the kitchen counter provided below the hanging cupboard 80. FIG.

  In FIG. 1, the installation object 8 of the illuminating device 1 and the installation surface 82 with which the installation object 8 was provided are shown with the dashed-two dotted line.

  As shown in FIG. 1, the lighting device 1 emits light toward a rod-shaped light guide member 2, a casing 3 in which the light guide member 2 is housed, and an end portion of the light guide member 2 in the length direction D <b> 1. And a light source 6.

  Hereinafter, a predetermined direction orthogonal to the length direction D1 (see FIG. 2 and the like) of the light guide member 2 is defined as the thickness direction D2 of the light guide member 2, and the length direction D1 of the light guide member 2 and the light guide member 2 The direction orthogonal to both of the thickness directions D2 will be described as the width direction D3 of the light guide member 2.

  The light guide member 2 is formed of a transparent acrylic resin. In addition, the light guide member 2 may be formed from other light-transmitting materials such as polycarbonate resin. When the light guide member 2 is colored, it is possible to emit colorful light.

  The light guide member 2 includes a light incident portion 20 (see FIG. 6) configured by both ends (specifically, both end surfaces) in the length direction D1 of the light guide member 2, and a length direction D1 of the light guide member 2. , And a light exit surface 21 configured by a surface along the surface (one surface in the thickness direction D2 of the light guide member 2).

  As shown in FIG. 1, the light guide member 2 according to the present embodiment includes a diffuse reflection portion 22 provided at an end opposite to the light exit surface 21. The diffuse reflection part 22 extends over the entire length of the light guide member 2 in the length direction D1. The diffuse reflection part 22 is formed of a material having a higher reflectance than the light guide member 2. The light guide member 2 and the diffuse reflection part 22 are formed by two-color molding and integrated. In addition, the diffuse reflection part 22 may be a reflective substance provided on the surface opposite to the light exit surface 21 of the light guide member 2 by printing or vapor deposition. Further, the diffuse reflection portion 22 may be fine unevenness provided on the surface of the light guide member 2 opposite to the light exit surface 21.

  The diffuse reflection unit 22 diffuses and reflects the light that has entered the light guide member 2 from the light incident unit 20 toward the light exit surface 21 side. That is, the light that has entered the light guide member 2 from each light incident portion 20 travels toward the opposite light incident portion 20 while being reflected by a surface along the length direction D1 of the light guide member 2. This light hits the diffuse reflection portion 22 and is diffused and reflected, and then exits the light guide member 2 from the light exit surface 21. Thereby, the light exit surface 21 emits light over the entire length of the light guide member 2 in the length direction D1.

  The light exit surface 21 is substantially orthogonal to the thickness direction 2 of the light guide member 2 and faces the side opposite to the diffuse reflection portion 22.

  The light exit surface 21 is curved so that the portion closer to the center of the light guide member 2 in the width direction D3 is closer to the diffuse reflection portion 22. For this reason, the light emitted from the light exit surface 21 of the light guide member 2 is difficult to spread outside the light guide member 2 in the width direction D3. Note that the light exit surface 21 may be curved so that the portion closer to the center of the light guide member 2 in the width direction D3 is away from the diffuse reflection portion 22. The light exit surface 21 may be a plane parallel to the width direction D3 of the light guide member 2.

  The casing 3 is a long member extending in the length direction D1 of the light guide member 2, and the length direction D4 (see FIG. 2) of the casing 3 and the length direction D1 of the light guide member 2 are parallel to each other.

  Hereinafter, as shown in FIG. 1, one direction orthogonal to the length direction D4 of the casing 3 is defined as a thickness direction D5 of the casing 3, and a direction orthogonal to both the length direction D4 and the thickness direction D5 of the casing 3 is defined. This will be described as the front-rear direction D6. Moreover, when the illuminating device 1 is installed in the installation object 8, the side where the user of the illuminating device 1 is located as viewed from the illuminating device 1 will be described as the front side, and the opposite side will be described as the rear side. That is, when one end in the width direction of the casing 3 (the direction orthogonal to both the length direction D4 and the thickness direction D5 of the casing 3) is the first end 41 and the opposite end is the second end 42, the first The end 41 is the rear end, and the second end 42 is the front end.

  The casing 3 is made of aluminum and is formed by extrusion molding. The casing 3 may be made of a metal other than aluminum or may be made of a synthetic resin.

  The casing 3 is flat, and the dimension of the casing 3 in the thickness direction D5 is smaller than the dimension of the casing 3 in the front-rear direction D6.

  The casing 3 includes a first surface 31 that is an outer surface on one side in the thickness direction D <b> 5 of the casing 3, and a second surface 32 that faces away from the first surface 31.

  The casing 3 is attached to the installation target 8 with the first surface 31 along the installation surface 82. Thus, when the casing 3 is attached to the installation object 8, the second surface 32 of the casing 3 is parallel to the installation surface 82.

  In the casing 3 of the present embodiment, a groove portion 33 is formed that opens to the opposite side to the first surface 31 side in the thickness direction D5 of the casing 3. The groove 33 extends in the length direction D4 of the casing 3.

  The groove portion 33 includes a storage portion 34 that forms the groove back portion, a light exit portion 36 that is formed on the second surface 32 and forms a groove opening portion, and one end portion communicates with the storage portion 34 and the other end portion is a light exit portion. And an optical path 35 leading to 36. The optical path 35 is located between the storage portion 34 and the light exit portion 36.

  The light guide member 2 is stored in the storage portion 34. The thickness direction D2 of the light guide member 2 is inclined with respect to both the thickness direction D5 and the front-rear direction D6 of the casing 3.

  The light exit surface 21 of the light guide member 2 faces rearward and toward the second surface 32 and is inclined with respect to the second surface 32. The light exit surface 21 faces the light exit portion 36 through the optical path 35.

  The front edge portion 38 and the rear edge portion 37 of the light exit portion 36 are arranged at the same position in the thickness direction D5 of the casing 3. The rear edge portion 37 of the light exit portion 36 is located farther from the light exit surface 21 than the front edge portion 38 of the light exit portion 36 in the thickness direction D2 of the light guide member 2.

  The lighting device 1 of the present embodiment includes a cover 10. The cover 10 is provided at the end of the storage portion 34 on the optical path 35 side. The cover 10 is a plate-like member along the light exit surface 21. The cover 10 is colorless and transparent and has translucency. The light path 35 side of the light exit surface 21 is covered with the cover 10. For this reason, the light exit surface 21 is hardly damaged. Also, dust and dust are less likely to enter the storage portion 34. The cover 10 may be colored as long as it has translucency. Further, the cover 10 can be omitted.

  The light emitted from the light exit surface 21 of the light guide member 2 passes through the cover 10 and reaches the optical path 35. A part of this light directly goes out of the casing 3 from the light exit part 36 without hitting the inner surfaces 51, 52 of the optical path 35.

  The optical path 35 includes a first inner surface 51 that is a rear inner surface and a second inner surface 52 that is a front inner surface.

  The casing 3 is positioned between a portion 43 positioned between the rear edge portion 37 of the light exit portion 36 and the rear end portion of the cover 10, and between a front edge portion 38 of the light exit portion 36 and the front end portion of the cover 10. And a portion 44 to be provided.

  The portions 43 and 44 are separated from each other in the width direction D3 of the light guide member 2. When the light exit surface 21 of the light guide member 2 is viewed in the thickness direction D <b> 2 of the light guide member 2, the light exit surface 21 is located between the portion 43 and the portion 44. The portion 43 is formed in a plate shape parallel to the thickness direction D2 of the light guide member 2. The first inner surface 51 of the optical path 35 is configured by the surface of the portion 43 facing the portion 44 side. The second inner surface 52 of the optical path 35 is configured by the surface of the portion 44 facing the portion 43 side.

  The first inner surface 51 is parallel to the thickness direction D2 of the light guide member 2, and is inclined so as to approach the second surface 32 as the portion is closer to the rear end.

  The first inner surface 51 extends from the rear edge portion 37 of the light exit portion 36 to the cover 10 toward the light guide member 2 side. The first inner surface 51 is longer in the thickness direction D <b> 2 of the light guide member 2 than the second inner surface 52.

  A reflective portion 45 is provided on the first inner surface 51. In the present embodiment, the entire first inner surface 51 is the reflecting portion 45. Note that the reflection portion 45 may be configured by only a part of the first inner surface 51.

  The reflector 45 is inclined with respect to the second surface 32. The reflection part 45 faces forward and on the second surface 32 side, and faces the light exit part 36.

  The reflection part 45 is silver and has a high reflectance. In this embodiment, the reflection part 45 is comprised by a part of surface of the casing 3 made from aluminum, and is a silver rough surface with a high reflectance. In addition, the reflectance of the reflection part 45 may be higher than the reflectance of the other surface of the casing 3. Further, the color of the reflecting portion 45 may be other colors such as white as long as it has a high reflectance. Further, the reflecting portion 45 may be a smooth mirror surface. Moreover, the reflection part 45 may be comprised with the member with a high reflectance separate from the casing 3. FIG.

  Part of the light that has passed through the cover 10 from the light exit surface 21 and entered the optical path 35 is reflected forward and toward the second surface 32 by the reflecting portion 45, and thereafter, the light exit portion 36 and the outside of the casing 3. Get out. Further, another part of the light that has passed through the cover 10 from the light exit surface 21 and entered the optical path 35 is also reflected by the second inner surface 52.

  The fixing member 11 is attached to each of the both ends of the length direction D4 of the casing 3 of this embodiment by screwing. As shown in FIG. 6, a light source case 12 is attached to each fixing member 11 by screws. A circuit board 13 is sandwiched and fixed between each fixing member 11 and the corresponding light source case 12. A light source 6 that emits light toward a corresponding light incident portion 20 of the light guide member 2 is mounted on the surface of each circuit board 13 on the light source case 12 side. Each light source 6 is housed in a corresponding light source case 12.

  Each light source 6 is a light emitting diode. Each light source 6 may be an organic electroluminescence or a light bulb.

  Each fixing member 11 is made of metal and has excellent heat conductivity. Each fixing member 11 is made of, for example, aluminum. The heat generated when the light source 6 emits light is transmitted from the circuit board 13 to the corresponding fixing member 11 and is dissipated from the fixing member 11. Further, the heat of each fixing member 11 is transmitted to the casing 3 and is also dissipated from the casing 3.

  As shown in FIGS. 2 and 3, caps 14 and 15 are attached to both ends of the casing 3 in the length direction D <b> 4. Each cap 14 and 15 is attached to the casing 3 by, for example, screwing.

  The outer shell of the lighting device 1 is composed of a casing 3 and both caps 14 and 15. Each fixing member 11, each circuit board 13, and each light source case 12 are covered with corresponding caps 14 and 15.

  When installing the lighting device 1 on the installation target 8, a plurality of fixtures 83 are attached to the installation target 8 along the installation surface 82 as shown in FIG. 1. The plurality of attachments 83 are attached side by side in the length direction of the casing 3 scheduled to be installed by screwing.

  The illuminating device 1 hooks the hooks 39 formed on the first surface 31 of the casing 3 on the fixtures 83, and in this state, the casing 3 is screwed to the fixtures 83, so that the installation target 8 is fixed. It is attached. The lighting device 1 may be attached to the installation target 8 by screwing the casing 3 directly to the installation target 8.

  In the example shown in FIG. 4, the lighting device 1 is attached to the hanging cabinet 80 with the lower surface of the hanging cabinet 80 as the installation surface 82. Specifically, the lighting device 1 has a light emitting surface 21 shown in FIG. 1 in a state where the light exit surface 21 is directed to the lower side of the hanging shelf 80 and toward the wall 90, and the front portion (the portion opposite to the wall 90) of the lower surface of the hanging shelf 80. It is attached.

  In the example shown in FIG. 5, the lighting device 1 is attached to the cabinet 81 with the side surface of the cabinet 81 as the installation surface 82. Specifically, the lighting device 1 is attached to the front portion (the portion on the opposite side of the wall 90) of the cabinet 81 with the light exit surface 21 shown in FIG. 1 facing the outside of the cabinet 81 and the wall 90 side. Yes.

  When each light source 6 of the illuminating device 1 emits light, the light that reaches the light exit portion 36 directly from the light exit surface 21 without hitting the inner surfaces 51 and 52 of the light path 35 is directly reflected on the side opposite to the installation surface 82. And it goes out to the rear diagonal direction. Further, the light that hits the reflecting portion 45 from the light exit surface 21 and reaches the light exit portion 36 exits in the diagonal direction on the opposite side of the installation surface 82 and on the front side as reflected light. That is, the illuminating device 1 illuminates with the direct light emitted from the light exit part 36 without hitting the inner surfaces 51 and 52 of the optical path 35 and the indirect light emitted from the light exit part 36 after hitting the reflection part 45.

  The illuminating device 1 of this embodiment demonstrated above has the following characteristics. The lighting device 1 includes a rod-shaped light guide member 2, a casing 3 in which the light guide member 2 is accommodated, and an end portion of the light guide member 2 in the length direction D1. And a light source 6 that emits light. One direction orthogonal to the length direction of the casing 3 is defined as the front-rear direction. The casing 3 is an outer surface on one side in a direction orthogonal to both the length direction D4 and the front-rear direction D6 of the casing 3, and the first surface 31 disposed along the installation target 8 and the first surface 31 are And a second surface 32 that is an outer surface facing the opposite side. The casing 3 includes a light exit portion 36 formed on the second surface 32, and an optical path 35 that communicates with the light exit portion 36. The light guide member 2 is a surface along the length direction D1 of the light guide member 2, and includes a light exit surface 21 that emits light that has entered the light guide member D2 from an end portion of the light guide member 2 in the length direction D1. . The light exit surface 21 faces rearward and on the second surface 32 side, and faces the light exit portion 36 through the optical path 35. The rear edge portion 37 of the light exit portion 36 is located farther from the light exit surface 21 than the front edge portion 38 of the light exit portion 36. A reflection portion 45 that reflects a part of the light emitted from the light exit surface 21 toward the light exit portion 36 is provided on the inner surface 51 on the rear side of the optical path 35.

  In the lighting device 1 having this feature, light emitted from the light source 6 enters the end portion of the light guide member 2 in the length direction D1 and exits from the light exit surface 21. Part of this light exits the casing 3 from the light exit portion 36 as direct light without being reflected by the inner surfaces 51 and 52 of the optical path 35. Further, another part of the light emitted from the light exit surface 21 is reflected by the reflecting portion 45 forward and to the second surface 32 side, and then exits the casing 3 from the light exit portion 36 as reflected light. In this case, the front side of the lighting device 1 is brightly illuminated by the indirect light. Further, the direct light is less likely to enter the eyes of the user on the front side of the lighting device 1. For this reason, the user is less likely to feel the light emitted from the light guide member 2 dazzlingly.

  Moreover, the installation structure of the illuminating device 1 of this embodiment has the following characteristics. The lighting device 1 is provided on the lower surface of the hanging cabinet 80 provided along the wall 90 with the light exit surface 21 facing downward and toward the wall 90.

  In the installation structure of the lighting device 1 having this feature, the lower side of the hanging cabinet 80 can be brightly illuminated by the direct light and the indirect light emitted from the light exit portion 36. Moreover, the user who exists in the front side of the hanging cupboard 80 does not feel the light emitted from the light guide member 2 dazzlingly.

  Note that the lighting device 1 and the installation structure of the lighting device 1 of the present embodiment can be appropriately changed in design without departing from the spirit of the present invention.

D1 Length direction of the light guide member D4 Length direction of the casing D5 Thickness direction of the casing (a direction orthogonal to the length direction of the casing and the front-rear direction)
D6 Longitudinal direction 1 Illuminating device 2 Light guide member 21 Light exit surface 3 Casing 31 First surface 32 Second surface 35 Optical path 36 Light exit portion 37 Rear edge portion of light exit portion 38 Front edge portion of light exit portion 45 Reflecting portion 51 Optical path Rear inner surface (first inner surface)
6 Light source 8 Installation object 80 Wall cabinet 90 Wall

Claims (2)

A rod-shaped light guide member;
A casing that extends in a length direction of the light guide member and that houses the light guide member;
A light source that emits light toward an end portion in a length direction of the light guide member,
One direction orthogonal to the length direction of the casing is the front-rear direction,
The casing is
The outer surface of one side in a direction orthogonal to both the length direction and the front-rear direction of the casing, a first surface disposed along the installation target;
A second surface that is an outer surface facing away from the first surface;
A light exit portion formed on the second surface;
An optical path leading to the light exit portion,
The light guide member is
A surface along the length direction of the light guide member, comprising a light exit surface for emitting light that has entered the light guide member from an end in the length direction of the light guide member;
The light exit surface faces rearward and toward the second surface, faces the light exit portion via the optical path, and the light exit portion has a rear edge portion that is closer to the light exit surface than a front edge portion of the light exit portion. An illuminating device, characterized in that a reflection portion is provided on the inner surface on the rear side of the optical path, the reflection portion reflecting a part of the light emitted from the light exit surface toward the light exit portion. It is the installation structure of the illuminating device of Claim 1, Comprising: On the lower surface of the hanging shelf provided along the wall, the said illuminating device is the state which faced the said light-emitting surface below the said hanging ledge, and the said wall side. The installation structure of the illuminating device characterized by being provided.

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