WO2016038843A1 - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
WO2016038843A1
WO2016038843A1 PCT/JP2015/004389 JP2015004389W WO2016038843A1 WO 2016038843 A1 WO2016038843 A1 WO 2016038843A1 JP 2015004389 W JP2015004389 W JP 2015004389W WO 2016038843 A1 WO2016038843 A1 WO 2016038843A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
extended
main body
base
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Application number
PCT/JP2015/004389
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French (fr)
Japanese (ja)
Inventor
雄司 細田
小泉　秀樹
大野　達司
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2016038843A1 publication Critical patent/WO2016038843A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures

Definitions

  • the present invention relates to an illuminating device, and more particularly to an illuminating device that includes a light source and a light guide and is provided so as to emit light through the light guide.
  • Japanese Patent Application Publication No. 2011-11873 describes an illumination device including a light source and a light guide plate. Light incident on the light guide plate from the light source is irradiated downward through the light guide plate.
  • a light diffusion sheet and a protective plate are arranged so as to cover the lower part of the light guide plate.
  • the light emitted from the light guide plate is diffused through the light diffusion sheet and the protective plate to illuminate the external space.
  • the conventional illumination device described above has a structure in which a light diffusion sheet and a protective plate are provided separately from the light guide plate, there is a problem that it is difficult to make the entire device compact.
  • the present invention aims to provide an illumination device capable of stably illuminating the outside with a compact structure in order to solve the above-mentioned problems.
  • An illumination device includes a light guide having a length direction, a width direction, and a thickness direction orthogonal to each other, a light source that makes light incident on the light guide, and a base that supports the light guide It comprises.
  • the light guide body is provided with a main body portion, an extension portion that extends from a portion of the main body portion along the width direction, and extends from a front end of the extension portion in the width direction, and is connected to the base. And a mounting portion to be integrated.
  • the main body includes an incident surface provided at an end in the length direction so that the light is incident, a diffusion surface provided at a first end in the thickness direction of the main body, and And an emission surface provided at the second end in the thickness direction.
  • the extended portion includes an extended exit surface that is located continuously with the exit surface.
  • the exit surface and the extended exit surface have a series of uneven shapes in which a plurality of concave stripes are arranged at a distance in the width direction.
  • a bottom of one of the plurality of grooves is located in a region near the attachment portion on the extended emission surface.
  • the uneven shape is a shape in which the plurality of concave stripes and the plurality of convex stripes are alternately arranged one by one, and the bottoms of the plurality of concave stripes are respectively It is preferably a concave curved surface, and the tops of the plurality of ridges are each preferably a convex curved surface.
  • FIG. 7 is a sectional view taken along line AA in FIG. 6.
  • the lighting device 8 according to an embodiment will be described with reference to the accompanying drawings.
  • the lighting device 8 of the present embodiment is an edge light type lighting device that is mounted along an edge 51 on the lower surface of the cabinet 5 of the system kitchen (see FIG. 1).
  • Cabinet 5 is located in the upper area of the system kitchen. That is, the cabinet 5 is positioned above a sink, a heating cooker, a work table, and the like included in the system kitchen.
  • the lighting device 8 of the present embodiment includes a long base 3 (see FIG. 3) fixed to the lower surface of the cabinet 5, and a pair of light source blocks 4a and 4b fixed to positions on both the left and right sides of the base 3.
  • a long light guide 1 (see FIG. 2) is detachably attached to the base 3 from below.
  • the light source blocks 4a and 4b are provided with light sources 2a and 2b at locations facing the light guide 1, respectively.
  • the light guide 1 is a straight bar-shaped member formed using a light-transmitting synthetic resin.
  • the length direction D1, the width direction D2, and the thickness direction D3 are used with the light guide 1 as a reference.
  • the length direction D1, the width direction D2, and the thickness direction D3 are orthogonal to each other.
  • the length direction D ⁇ b> 1 is parallel to the edge 51 of the cabinet 5. That is, the length direction D1 is parallel to the left-right direction of the cabinet 5.
  • the width direction D ⁇ b> 2 is parallel to the front-rear direction of the cabinet 5.
  • the thickness direction D3 is parallel to the vertical direction of the cabinet 5.
  • the cross-sectional shape of the light guide 1 is the same over the entire length in the length direction D1.
  • the cross-sectional shape is a cross-sectional shape in a plane orthogonal to the length direction D1 of the light guide 1.
  • the light guide 1 can be divided into a plurality of regions described below in the width direction D2.
  • a region 91 is located in the center of the light guide 1 in the width direction D2.
  • the main body 11 having a main function as the light guide 1 is located.
  • the extended portions 12a and 12b are located in the regions 92a and 92b on both sides of the central region 91, respectively.
  • Attachment portions 13a and 13b are located in regions 93a and 93b at both ends sandwiching these regions 91, 92a and 92b, respectively.
  • the main body 11, the extended portions 12a and 12b, and the attachment portions 13a and 13b included in the light guide 1 are integrally formed using a light-transmitting synthetic resin.
  • the main body 11 located in the central region 91 has a pair of incident surfaces 111a and 111b, a diffusing surface 112, and an emitting surface 113 (see FIG. 2).
  • the pair of incident surfaces 111a and 111b are located in opposite directions at both ends in the length direction D1 of the main body 11.
  • the diffusion surface 112 is formed at the first end (upper end) in the thickness direction D3 of the main body 11 by, for example, laser processing.
  • the emission surface 113 is formed at the second end (lower end) of the main body 11 in the thickness direction D3.
  • the emission surface 113 is located in the opposite direction to the diffusion surface 112. The detailed shape of the emission surface 113 will be described later.
  • the main body 11 further includes a pair of side surfaces 114a and 114b (see FIG. 4).
  • the pair of side surfaces 114a and 114b are located in opposite directions at both ends in the width direction D2 of the main body 11.
  • Each of the side surfaces 114a and 114b is a convex curved surface provided so as to be bent in a parabolic shape when the light guide 1 is viewed along the length direction D1.
  • the distance between the pair of side surfaces 114a and 114b of the main body 11 (that is, the dimension in the width direction D2 of the main body 11) gradually increases as the distance from the diffusion surface 112 approaches the emission surface 113.
  • the extended portions 12a and 12b located in the regions 92a and 92b are respectively connected to each other along the width direction D2 from the end portion in the thickness direction D3 of the main body portion 11 (the end portion on the second end side where the emission surface 113 is located). It has a shape extended in the direction of leaving.
  • the pair of expansion portions 12a and 12b are formed over the entire length of the main body portion 11 in the length direction D1.
  • the extended portions 12a and 12b have extended exit surfaces 121a and 121b each having a shape extending smoothly from the exit surface 113 of the main body 11 on the end surface (lower end surface) on the second end side in the thickness direction D3.
  • the detailed shape of the extended emission surfaces 121a and 121b will be described later.
  • the attachment portions 13a and 13b located in the regions 93a and 93b at both ends have a shape further extended in an L shape from the respective ends of the pair of extension portions 12a and 12b extended from the main body portion 11.
  • the mounting portions 13a and 13b protrude along the thickness direction D3 in the direction away from the emission surface 113 and the extended emission surfaces 121a and 121b (upward), and have hook-like projections 131a and 131b at the protruding portions.
  • the attachment portions 13a and 13b have flexibility.
  • the central body part 11 and the attachment parts 13a and 13b at both ends are positioned in parallel to each other.
  • Grooves 16a and 16b are formed across the entire length in the length direction D1 between the main body 11 and the attachment portions 13a and 13b adjacent thereto.
  • the grooves 16a and 16b are located on the back sides of the extended portions 12a and 12b (that is, on the side opposite to the side where the extended emission surface 121 is located in the thickness direction D3).
  • the base 3 is a highly reflective member formed of a material such as anodized. As shown in FIGS. 3 and 4, the base 3 includes a flat fixing plate 31 fixed to the lower surface of the cabinet 5 and a pair of attachment pieces 32 a and 32 b protruding from one surface side of the fixing plate 31.
  • the pair of attachment pieces 32a and 32b protrude in the same direction in the thickness direction D3.
  • the pair of attachment pieces 32a and 32b are positioned parallel to each other with a distance in the width direction D2.
  • the attachment pieces 32a and 32b have hook-shaped protrusions 321a and 321b, respectively.
  • a light source block 4a fixed at a position adjacent to the base 3 houses a light source 2a that is an LED (light emitting diode), a circuit 25a configured to control light emission of the light source 2a, and the light source 2a and the circuit 25a.
  • a case 41a (see FIG. 1).
  • a light source block 4b fixed on the opposite side of the light source block 4a across the base 3 includes a light source 2b that is an LED (light emitting diode), a circuit 25b configured to control light emission of the light source 2b, and a light source 2b. And a case 41b for housing the circuit 25b.
  • the mounting of the light guide 1 to the base 3 is performed as follows.
  • the light guide 1 is brought close to the base 3 fixed to the cabinet 5 with the diffusing surface 112 of the main body 11 facing upward, and the base 3 is placed in the pair of grooves 16 a and 16 b of the light guide 1.
  • a pair of attachment pieces 32a and 32b are inserted one-on-one.
  • the groove 16a the protrusion 131a provided on the attachment portion 13a of the light guide 1 is caught by the protrusion 321a provided on the attachment piece 32a of the base 3 (see FIG. 4).
  • the protrusion 131 b provided on the attachment portion 13 b of the light guide 1 is caught by the protrusion 321 b provided on the attachment piece 32 b of the base 3. Thereby, the light guide 1 is supported by the base 3.
  • the base 3 is not first fixed to the cabinet 5 in this way, but the base 3, the light guide 1, and the light source blocks 4 a and 4 b are combined first, and then the base 3 is fixed to the cabinet 5. Good.
  • the light source blocks 4a and 4b can be attached and detached, respectively.
  • the diffusion surface 112 of the main body 11 is located in contact with or close to one surface (lower surface) of the fixing plate 31.
  • the attachment portions 13a and 13b at both ends of the light guide 1 cover the sides of the attachment pieces 32a and 32b of the base 3, and form the side walls of the entire lighting device 8.
  • the light source 2 in order to obtain illumination light, has light sources 2 a and 2 b of the light source blocks 4 a and 4 b with the light guide 1 mounted on the base 3. Light is incident on the incident surfaces 111 a and 111 b of the main body 11.
  • the main-body part 11 has the entrance surfaces 111a and 111b in the both ends of the length direction D1
  • the light source block 4b can be disposed only on the other side of the length direction D1 of the main body 11.
  • the light diffused by the diffusion surface 112 is transmitted toward the emission surface 113 directly or through total reflection at the side surfaces 114a and 114b.
  • the emission surface 113 which is the lower surface of the main body 11 of the light guide 1 and the extended emission surfaces 121a and 121b which are the lower surfaces of the extension portions 12a and 12b, and a series of these emission surfaces 113 and 121a.
  • 121b emits light toward the lower space.
  • continuous uneven shapes are provided on the emission surface 113 of the main body 11 and the extended emission surfaces 121a and 121b of the pair of expansion portions 12a and 12b.
  • the concavo-convex shape is a corrugated shape in which a plurality of concave strips 14, 14... Are arranged in parallel at equal intervals in the width direction D2. Each recess 14 has a straight shape extending along the length direction D1.
  • one of the plurality of concave strips 14 is located on each of the extended light exit surfaces 121a and 121b.
  • One of the plurality of recesses 14 forming the uneven shape is a recess 14a located on the extended exit surface 121a, and the other one of the plurality of recesses 14 is a recess 14b located on the extended exit surface 121b. is there.
  • the bottom 141a of one recess 14a is located on the extended emission surface 121a.
  • the bottom 141a is the most recessed portion of the groove 14a in the thickness direction D3.
  • a bottom 141b of one concave strip 14b is located on the extended emission surface 121b.
  • the bottom 141b is the most concave portion of the concave strip 14b in the thickness direction D3.
  • the bottom 141a of one recess 14a is located in the region 921a set on the extended exit surface 121a.
  • the region 921a is a region closer to the attachment portion 13a (ie, closer to the region 93a) when the region 92a where the extended emission surface 121a is located is equally divided into the width direction D2.
  • the bottom 141b of one concave strip 14b is located in the region 921b set on the extended emission surface 121b.
  • the region 921b is a region closer to the attachment portion 13b (ie, closer to the region 93b) when the region 92b where the extended emission surface 121b is located is equally divided into the width direction D2.
  • the inner side surface 142a of one concave strip 14a is located on the extended outgoing surface 121a.
  • the inner side surface 142a is a surface that continues from the bottom 141a of the concave strip 14a toward the inner side in the width direction D2 (the side on which the emission surface 113 is located). On the inner side surface 142a, the closer to the inner side in the width direction D2, the greater the distance in the thickness direction D3 from the diffusion surface 112.
  • the inner surface 142b of the concave strip 14b is located on the extended outgoing surface 121b.
  • the inner side surface 142b is a surface that continues from the bottom 141b of the concave strip 14b toward the inner side in the width direction D2 (the side on which the emission surface 113 is located). In the inner side surface 142b, the distance in the thickness direction D3 from the diffusion surface 112 increases as it goes inward in the width direction D2.
  • the bottoms 141a and 141b of the concave strips 14a and 14b are located at locations close to the mounting portions 13a and 13b, respectively, of the extended emission surfaces 121a and 121b of the extended portions 12a and 12b.
  • the extended portions 12a and 12b have a shape in which the light transmission path is narrowed down at the portions where the bottoms 141a and 141b of the concave strips 14a and 14b are located.
  • the light diffused in the main body 11 is suppressed from reaching the attachment portions 13a and 13b through the extension portions 12a and 12b, and light is emitted from the extension emission surfaces 121a and 121b with a large amount of light.
  • the extended emission surfaces 121a and 121b have a function of expanding the emission surface 113 to increase the light emission area.
  • the projection surface 113 and the extended exit surfaces 121a and 121b that are continuous with the projection surface are provided with the concavo-convex shape in which the concavo-convex are alternately arranged, the light is diffused at the time of emission, and the entire lower area of the system kitchen is uniformly distributed. Illuminate. Thereby, a user's glare is reduced.
  • the bottoms of the plurality of concave stripes 14, 14... are all concavely curved when viewed along the length direction D1.
  • the tops of the ridges 15 located between the adjacent ridges 14 and 14 are both convex curved surfaces having an arc shape when viewed along the length direction D1.
  • FIG. 5 shows a modification of the lighting device 8 of the present embodiment.
  • a concave and convex shape in which a plurality of concave strips 14, 14... And a plurality of convex strips 15, 15.
  • the bottom has an angular shape
  • the top of each ridge 15 has an angular shape.
  • the uneven shape of this modification is a sawtooth shape.
  • FIG. 6 and 7 show an installation example in which the lighting device 8 of the present embodiment is provided in the bathroom 6.
  • the base 3 is fixed to the ceiling plate 61 of the bathroom 6, and the light guide 1 is attached to the base 3 from below.
  • a ceiling plate 61 is formed by a pair of plates 611a and 611b.
  • the edges of the pair of plates 611a and 611b face each other with a predetermined distance in the horizontal direction.
  • Vertical pieces 612a and 612b are extended upward from the end edges of the pair of plates 611a and 611b, respectively.
  • a groove-like gap 62 is formed in a straight line between the vertical pieces 612 a and 612 b located opposite to each other, and the base 3 is fixed in the gap 62.
  • extension pieces 311a and 311b protrude upward from both ends in the width direction D2 of the fixing plate 31 of the base 3, respectively.
  • the base 3 is fixed to the ceiling board 61 by the vertical pieces 612a and 612b of the ceiling board 61 and the extension pieces 311a and 311b of the base 3 being fastened together by the fasteners 63.
  • the base 3 fixed to the ceiling board 61 is located in a deep part of the gap 62 when viewed from below.
  • the light guide 1 is mounted on the base 3 by inserting the light guide 1 into the gap 62 with the exit surface 113 and the extended exit surfaces 121a and 121b facing downward.
  • the light guide 1 mounted on the base 3 is positioned such that the lower surface including the emission surface 113 and the extended emission surfaces 121a and 121b is exposed to the bathroom space below.
  • FIG. 8 to 10 show installation examples in which the lighting device 8 of the present embodiment is provided in a car 7.
  • the front seat 72 and the rear seat 73 are positioned side by side in the passenger compartment space of the automobile 7, and the ceiling 71 is positioned above the seats 72 and 73.
  • the length direction D ⁇ b> 1 of the light guide 1 is parallel to the front-rear direction of the automobile 7 in a state where the lighting device 8 of the present embodiment is mounted on the ceiling 71.
  • the width direction D2 of the light guide 1 is parallel to the left-right direction of the automobile.
  • the thickness direction D3 of the light guide 1 is parallel to the vertical direction of the automobile.
  • Only one lighting device 8 is located in the central portion of the ceiling 71 in the left-right direction.
  • the light emission of the light sources 2 a and 2 b in the front and rear light source blocks 4 a and 4 b is controlled by operating a switch 74 disposed on the ceiling 71.
  • the switch 74 is preferably disposed at a position where it can be operated from all the seats 72 and 73.
  • the light sources 2a and 2b are LEDs capable of at least one of light control and color control.
  • the on / off of light emission of the light sources 2a and 2b in the front and rear light source blocks 4a and 4b is individually controlled, and at least one of dimming and toning is controlled, thereby realizing various interior lighting including a gradation state Is done.
  • two illumination devices 8 of the present embodiment are arranged in parallel with a distance in the left-right direction.
  • the light emission of the light sources 2 a and 2 b in the front and rear light source blocks 4 a and 4 b is controlled on a one-to-one basis by operating a plurality of switches 74 arranged on the ceiling 71.
  • the switches 74 installed at four locations, the light emission of the light source blocks 4a and 4b of each lighting device 8 is individually controlled, thereby realizing various interior lighting.
  • two illumination devices 8 of the present embodiment are arranged in parallel with a distance in the front-rear direction.
  • the length direction D1 of the light guide 1 is parallel to the left-right direction of the automobile 7 in a state where the lighting device 8 of the present embodiment is mounted on the ceiling 71.
  • the width direction D2 of the light guide 1 is parallel to the front-rear direction of the automobile.
  • the thickness direction D3 of the light guide 1 is parallel to the vertical direction of the automobile.
  • the light emission of the light source blocks 4 a and 4 b of each lighting device 8 is controlled by operating a plurality of switches 74 arranged on the ceiling 71.
  • various illuminations are realized by individually controlling the light emission of the light source blocks 4a and 4b by operating the switches 74 installed at four places, for example.
  • the illumination device 8 of the present embodiment supports the light guide 1, the light sources 2 a and 2 b for making light incident on the light guide 1, and the light guide 1. And a base 3 to be provided.
  • the light guide 1 has a length direction D1, a width direction D2, and a thickness direction D3 that are orthogonal to each other.
  • the light guide 1 extends from the main body 11, the extended portions 12a and 12b extended from a part of the main body 11 along the width direction D2, and the end portions of the extended portions 12a and 12b in the width direction D2.
  • the provided mounting portions 13a and 13b are integrally provided.
  • the attachment portions 13 a and 13 b are connected to the base 3.
  • the main body 11 includes incident surfaces 111a and 111b provided at end portions in the length direction D1 so that light enters, a diffusion surface 112 provided at a first end in the thickness direction D3 of the main body portion 11, and a main body. And an emission surface 113 provided at the second end of the portion 11 in the thickness direction D2.
  • the extended portions 12a and 12b include extended exit surfaces 121a and 121b that are located continuously with the exit surface 113.
  • the exit surface 113 and the extended exit surfaces 121a and 121b have a series of concave and convex shapes in which a plurality of concave strips 14, 14... Are arranged at a distance in the width direction D2.
  • the extended light exit surface 113 is provided on the light exit surface 113 while having a compact structure in which the light guide 1 is mounted on the base 3 (that is, a structure that does not require a light diffusion sheet or a protective plate). It is possible to illuminate the outside with a wide light emitting area to which 121a and 121b are added. Moreover, since the exit surface 113 and the extended exit surfaces 121a and 121b have a series of the uneven shapes, the diffusibility, directivity, extraction efficiency, and the like of the emitted light can be adjusted by the uneven shapes. Therefore, freely adjusted emission light can be obtained even with a structure that does not include a light diffusion sheet or a protective plate.
  • the bottom 141a of one of the plurality of concave strips 14, 14... Is located in the region 921a on the side close to the mounting portion 13a of the extended emission surface 121a.
  • the bottom 141b of one recess 14b among the plurality of recesses 14, 14... Is located in a region 921b on the side closer to the attachment portion 13b in the extended emission surface 121b.
  • the concave strips 14a and 14b are located on the extended exit surfaces 121a and 121b.
  • the uneven shape is a shape in which a plurality of concave stripes 14, 14... And a plurality of convex stripes 15, 15. , 14... Are concavely curved, and the tops of the plurality of ridges 15, 15.
  • the emitted light is more evenly diffused.
  • the lighting device has been described based on the embodiments shown in the accompanying drawings.
  • the lighting device is not limited to the above-described embodiments and installation examples, and appropriate design changes and configurations of the examples are provided. Can be applied in appropriate combination.

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  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

　The present invention addresses the problem of providing a compact lighting device. This lighting device is provided with a light guide element (1), a light source, and a base (3) for supporting the light guide element (1). The light guide element (1) is integrally provided with a body part (11), extension parts (12a, 12b) extended from the body part (11), and fitting parts (13a, 13b) provided extending from the extension parts (12a, 12b). The body part (11) includes an emission surface (113), and the extension parts (12a, 12b) include extended emission surfaces (121a, 121b). The emission surface (113) and the extended emission surfaces (121a, 121b) have a series of irregular shapes in which a plurality of recessed streaks (14, 14, etc.) are in a row.

Description

照明装置Lighting device
　本発明は、照明装置に関し、より詳細には、光源と導光体を備え、該導光体を介して光を出射させるように設けた照明装置に関する。 The present invention relates to an illuminating device, and more particularly to an illuminating device that includes a light source and a light guide and is provided so as to emit light through the light guide.
　日本国特許出願公開番号２０１１－１１８７３には、光源と導光板を備えた照明装置が記載されている。光源から導光板に入射した光は、該導光板を通じて下方に照射される。 Japanese Patent Application Publication No. 2011-11873 describes an illumination device including a light source and a light guide plate. Light incident on the light guide plate from the light source is irradiated downward through the light guide plate.
　前記照明装置では、導光板を支持するために、導光板の下方を覆うように光拡散シートと保護板が配されている。導光板から照射された光は、この光拡散シートと保護板を通じて拡散され、外部空間を照らすようになっている。 In the illumination device, in order to support the light guide plate, a light diffusion sheet and a protective plate are arranged so as to cover the lower part of the light guide plate. The light emitted from the light guide plate is diffused through the light diffusion sheet and the protective plate to illuminate the external space.
　前記した従来の照明装置は、導光板とは別に光拡散シートと保護板を設ける構造であるから、装置全体のコンパクト化が困難であるという課題がある。 Since the conventional illumination device described above has a structure in which a light diffusion sheet and a protective plate are provided separately from the light guide plate, there is a problem that it is difficult to make the entire device compact.
　本発明は前記課題を解決すべく、外部を安定して照らすことのできる照明装置を、コンパクトな構造で提供することを目的とする。 The present invention aims to provide an illumination device capable of stably illuminating the outside with a compact structure in order to solve the above-mentioned problems.
　本発明の一様態に係る照明装置は、互いに直交する長さ方向、幅方向及び厚み方向を有する導光体と、前記導光体に光を入射させる光源と、前記導光体を支持するベースとを具備する。 An illumination device according to an aspect of the present invention includes a light guide having a length direction, a width direction, and a thickness direction orthogonal to each other, a light source that makes light incident on the light guide, and a base that supports the light guide It comprises.
　前記導光体は、本体部と、前記本体部の一部から前記幅方向に沿って拡張された拡張部と、前記拡張部の前記幅方向の先端から延長して設けられ、前記ベースに連結される取付部とを一体に備える。 The light guide body is provided with a main body portion, an extension portion that extends from a portion of the main body portion along the width direction, and extends from a front end of the extension portion in the width direction, and is connected to the base. And a mounting portion to be integrated.
　前記本体部は、前記光が入射するように前記長さ方向の端部に設けられた入射面と、前記本体部の前記厚み方向の第一端に設けられた拡散面と、前記本体部の前記厚み方向の第二端に設けられた出射面とを含む。 The main body includes an incident surface provided at an end in the length direction so that the light is incident, a diffusion surface provided at a first end in the thickness direction of the main body, and And an emission surface provided at the second end in the thickness direction.
　前記拡張部は、前記出射面と連続して位置する拡張出射面を含む。 The extended portion includes an extended exit surface that is located continuously with the exit surface.
　前記出射面と前記拡張出射面は、複数の凹条が前記幅方向に距離をあけて並ぶ一連の凹凸形状を有する。 The exit surface and the extended exit surface have a series of uneven shapes in which a plurality of concave stripes are arranged at a distance in the width direction.
　また、本発明の一態様に係る照明装置においては、前記拡張出射面のうち前記取付部に近い側の領域に、前記複数の凹条のうち一つの凹条の底が位置することが好ましい。 Further, in the lighting device according to one aspect of the present invention, it is preferable that a bottom of one of the plurality of grooves is located in a region near the attachment portion on the extended emission surface.
　また、本発明の一態様に係る照明装置において、前記凹凸形状は、前記複数の凹条と複数の凸条が、一つずつ交互に並んだ形状であり、前記複数の凹条の底部がそれぞれ凹曲面状であり、前記複数の凸条の頂部がそれぞれ凸曲面状であることが好ましい。 In the illumination device according to an aspect of the present invention, the uneven shape is a shape in which the plurality of concave stripes and the plurality of convex stripes are alternately arranged one by one, and the bottoms of the plurality of concave stripes are respectively It is preferably a concave curved surface, and the tops of the plurality of ridges are each preferably a convex curved surface.
一実施形態の照明装置をキャビネットに備えた例の斜視図である。It is a perspective view of the example which provided the illuminating device of one Embodiment in the cabinet. 一実施形態の照明装置が備える導光体の斜視図である。It is a perspective view of the light guide with which the illuminating device of one Embodiment is provided. 一実施形態の照明装置が備えるベースの斜視図である。It is a perspective view of the base with which the illuminating device of one Embodiment is provided. 一実施形態の導光体をベースに装着した状態の側面図である。It is a side view of the state where the light guide of one embodiment was attached to the base. 一実施形態の照明装置の変形例において導光体をベースに装着した状態の側面図である。It is a side view of the state which mounted | wore the light guide with the base in the modification of the illuminating device of one Embodiment. 一実施形態の照明装置を浴室に備えた例の斜視図である。It is a perspective view of the example which provided the illuminating device of one Embodiment in the bathroom. 図６のＡ－Ａ線断面図である。FIG. 7 is a sectional view taken along line AA in FIG. 6. 一実施形態の照明装置を自動車に備えた例の斜視図である。It is a perspective view of the example which provided the illuminating device of one Embodiment in the motor vehicle. 一実施形態の照明装置を別の配置で自動車に備えた例の斜視図である。It is a perspective view of the example which provided the illuminating device of one Embodiment in the motor vehicle by another arrangement | positioning. 一実施形態の照明装置を更に別の配置で自動車に備えた例の斜視図である。It is a perspective view of the example which provided the illuminating device of one Embodiment in the motor vehicle by another arrangement | positioning.
　一実施形態の照明装置８について、添付図面に基づいて説明する。 The lighting device 8 according to an embodiment will be described with reference to the accompanying drawings.
　本実施形態の照明装置８は、システムキッチンのキャビネット５が有する下面の端縁５１に沿って装着される、エッジライト型の照明装置である（図１参照）。 The lighting device 8 of the present embodiment is an edge light type lighting device that is mounted along an edge 51 on the lower surface of the cabinet 5 of the system kitchen (see FIG. 1).
　キャビネット５は、システムキッチンの上部領域に位置する。即ち、キャビネット５は、システムキッチンが備える流し台、加熱調理器、作業台等の上方に位置する。 Cabinet 5 is located in the upper area of the system kitchen. That is, the cabinet 5 is positioned above a sink, a heating cooker, a work table, and the like included in the system kitchen.
　本実施形態の照明装置８は、キャビネット５の下面に固定される長尺のベース３（図３参照）と、ベース３を挟む左右両側の位置に固定される一対の光源ブロック４ａ，４ｂと、ベース３に対して下方から着脱自在に装着される長尺の導光体１（図２参照）とを備える。光源ブロック４ａ，４ｂは、導光体１と対向する箇所にそれぞれ光源２ａ，２ｂを備える。 The lighting device 8 of the present embodiment includes a long base 3 (see FIG. 3) fixed to the lower surface of the cabinet 5, and a pair of light source blocks 4a and 4b fixed to positions on both the left and right sides of the base 3. A long light guide 1 (see FIG. 2) is detachably attached to the base 3 from below. The light source blocks 4a and 4b are provided with light sources 2a and 2b at locations facing the light guide 1, respectively.
　導光体１は、光透過性の合成樹脂を用いて成形された直線棒状の部材である。 The light guide 1 is a straight bar-shaped member formed using a light-transmitting synthetic resin.
　以下においては、この導光体１を基準として長さ方向Ｄ１、幅方向Ｄ２及び厚み方向Ｄ３を用いる。長さ方向Ｄ１、幅方向Ｄ２及び厚み方向Ｄ３は、互いに直交する。 In the following, the length direction D1, the width direction D2, and the thickness direction D3 are used with the light guide 1 as a reference. The length direction D1, the width direction D2, and the thickness direction D3 are orthogonal to each other.
　本実施形態の照明装置８をキャビネット５に装着した状態において、長さ方向Ｄ１は、キャビネット５の端縁５１と平行である。つまり、長さ方向Ｄ１は、キャビネット５の左右方向と平行である。幅方向Ｄ２は、キャビネット５の前後方向と平行である。厚み方向Ｄ３は、キャビネット５の上下方向と平行である。 In the state where the lighting device 8 of the present embodiment is mounted on the cabinet 5, the length direction D <b> 1 is parallel to the edge 51 of the cabinet 5. That is, the length direction D1 is parallel to the left-right direction of the cabinet 5. The width direction D <b> 2 is parallel to the front-rear direction of the cabinet 5. The thickness direction D3 is parallel to the vertical direction of the cabinet 5.
　図２に示すように、導光体１の断面形状は、長さ方向Ｄ１の全長に亘って同一である。前記断面形状は、導光体１の長さ方向Ｄ１と直交する面での断面形状である。 As shown in FIG. 2, the cross-sectional shape of the light guide 1 is the same over the entire length in the length direction D1. The cross-sectional shape is a cross-sectional shape in a plane orthogonal to the length direction D1 of the light guide 1.
　導光体１は、幅方向Ｄ２において、以下に述べる複数の領域に区分することができる。 The light guide 1 can be divided into a plurality of regions described below in the width direction D2.
　図４に示すように、幅方向Ｄ２において、導光体１の中央には領域９１が位置する。導光体１の領域９１には、導光体１としての主要な機能を有する本体部１１が位置する。 As shown in FIG. 4, a region 91 is located in the center of the light guide 1 in the width direction D2. In the region 91 of the light guide 1, the main body 11 having a main function as the light guide 1 is located.
　中央の領域９１を挟んだ両側の領域９２ａ，９２ｂには、拡張部１２ａ，１２ｂがそれぞれ位置する。これらの領域９１，９２ａ，９２ｂを挟んだ両端の領域９３ａ，９３ｂには、それぞれ取付部１３ａ，１３ｂが位置する。 The extended portions 12a and 12b are located in the regions 92a and 92b on both sides of the central region 91, respectively. Attachment portions 13a and 13b are located in regions 93a and 93b at both ends sandwiching these regions 91, 92a and 92b, respectively.
　導光体１が備える本体部１１、拡張部１２ａ，１２ｂ及び取付部１３ａ，１３ｂは、光透過性の合成樹脂を用いて一体に成形される。 The main body 11, the extended portions 12a and 12b, and the attachment portions 13a and 13b included in the light guide 1 are integrally formed using a light-transmitting synthetic resin.
　中央の領域９１に位置する本体部１１は、一対の入射面１１１ａ，１１１ｂと拡散面１１２と出射面１１３を有する（図２参照）。一対の入射面１１１ａ，１１１ｂは、本体部１１の長さ方向Ｄ１の両端において、互いに反対方向を向いて位置する。 The main body 11 located in the central region 91 has a pair of incident surfaces 111a and 111b, a diffusing surface 112, and an emitting surface 113 (see FIG. 2). The pair of incident surfaces 111a and 111b are located in opposite directions at both ends in the length direction D1 of the main body 11.
　拡散面１１２は、例えばレーザー加工によって、本体部１１の厚み方向Ｄ３の第一端（上端）に形成される。出射面１１３は、本体部１１の厚み方向Ｄ３の第二端（下端）に形成される。出射面１１３は、拡散面１１２とは反対方向を向いて位置する。出射面１１３の詳細な形状については後述する。 The diffusion surface 112 is formed at the first end (upper end) in the thickness direction D3 of the main body 11 by, for example, laser processing. The emission surface 113 is formed at the second end (lower end) of the main body 11 in the thickness direction D3. The emission surface 113 is located in the opposite direction to the diffusion surface 112. The detailed shape of the emission surface 113 will be described later.
　本体部１１は、一対の側面１１４ａ，１１４ｂを更に有する（図４参照）。一対の側面１１４ａ，１１４ｂは、本体部１１の幅方向Ｄ２の両端において、互いに反対方向を向いて位置する。 The main body 11 further includes a pair of side surfaces 114a and 114b (see FIG. 4). The pair of side surfaces 114a and 114b are located in opposite directions at both ends in the width direction D2 of the main body 11.
　側面１１４ａ，１１４ｂはそれぞれ、導光体１を長さ方向Ｄ１に沿って視たときに放物線状に湾曲するように設けられた凸曲面である。本体部１１が有する一対の側面１１４ａ，１１４ｂ間の距離（即ち、本体部１１の幅方向Ｄ２の寸法）は、拡散面１１２から離れて出射面１１３に近づくほどに漸次大きくなる。 Each of the side surfaces 114a and 114b is a convex curved surface provided so as to be bent in a parabolic shape when the light guide 1 is viewed along the length direction D1. The distance between the pair of side surfaces 114a and 114b of the main body 11 (that is, the dimension in the width direction D2 of the main body 11) gradually increases as the distance from the diffusion surface 112 approaches the emission surface 113.
　領域９２ａ，９２ｂに位置する拡張部１２ａ，１２ｂはそれぞれ、本体部１１の厚み方向Ｄ３の端部（出射面１１３が位置する第二端側の端部）から、幅方向Ｄ２に沿って、互いに離れる方向に延長された形状を有する。一対の拡張部１２ａ，１２ｂはそれぞれ、本体部１１の長さ方向Ｄ１の全長に亘って形成される。 The extended portions 12a and 12b located in the regions 92a and 92b are respectively connected to each other along the width direction D2 from the end portion in the thickness direction D3 of the main body portion 11 (the end portion on the second end side where the emission surface 113 is located). It has a shape extended in the direction of leaving. The pair of expansion portions 12a and 12b are formed over the entire length of the main body portion 11 in the length direction D1.
　拡張部１２ａ，１２ｂはそれぞれ、厚み方向Ｄ３の第二端側の端面（下端面）に、本体部１１の出射面１１３から滑らかに延長された形状の拡張出射面１２１ａ，１２１ｂを有する。拡張出射面１２１ａ，１２１ｂの詳細な形状については後述する。 The extended portions 12a and 12b have extended exit surfaces 121a and 121b each having a shape extending smoothly from the exit surface 113 of the main body 11 on the end surface (lower end surface) on the second end side in the thickness direction D3. The detailed shape of the extended emission surfaces 121a and 121b will be described later.
　両端の領域９３ａ，９３ｂに位置する取付部１３ａ，１３ｂは、本体部１１から延長された一対の拡張部１２ａ，１２ｂのそれぞれの先端から、更にＬ字状に延長された形状を有する。 The attachment portions 13a and 13b located in the regions 93a and 93b at both ends have a shape further extended in an L shape from the respective ends of the pair of extension portions 12a and 12b extended from the main body portion 11.
　取付部１３ａ，１３ｂはそれぞれ、厚み方向Ｄ３に沿って、出射面１１３や拡張出射面１２１ａ，１２１ｂから離れる方向（上方）に突出し、その突出部分にフック状の突起１３１ａ，１３１ｂを有する。取付部１３ａ，１３ｂは可撓性を有する。 The mounting portions 13a and 13b protrude along the thickness direction D3 in the direction away from the emission surface 113 and the extended emission surfaces 121a and 121b (upward), and have hook- like projections 131a and 131b at the protruding portions. The attachment portions 13a and 13b have flexibility.
　中央の本体部１１と両端の取付部１３ａ，１３ｂとは、互いに平行に位置する。本体部１１とこれに隣接する取付部１３ａ，１３ｂとの間には、それぞれ長さ方向Ｄ１の全長に亘って溝１６ａ，１６ｂが形成される。溝１６ａ，１６ｂは、拡張部１２ａ，１２ｂのそれぞれの裏側（即ち、厚み方向Ｄ３において拡張出射面１２１が位置する側とは反対側）に位置する。 The central body part 11 and the attachment parts 13a and 13b at both ends are positioned in parallel to each other. Grooves 16a and 16b are formed across the entire length in the length direction D1 between the main body 11 and the attachment portions 13a and 13b adjacent thereto. The grooves 16a and 16b are located on the back sides of the extended portions 12a and 12b (that is, on the side opposite to the side where the extended emission surface 121 is located in the thickness direction D3).
　ベース３は、アルマイト等の材料で成形された高反射性の部材である。図３や図４に示すように、ベース３は、キャビネット５の下面に固定される平板状の固定板３１と、固定板３１の一面側から突出する一対の取付片３２ａ，３２ｂとを備える。 The base 3 is a highly reflective member formed of a material such as anodized. As shown in FIGS. 3 and 4, the base 3 includes a flat fixing plate 31 fixed to the lower surface of the cabinet 5 and a pair of attachment pieces 32 a and 32 b protruding from one surface side of the fixing plate 31.
　一対の取付片３２ａ，３２ｂは、厚み方向Ｄ３において互いに同一の方向に突出する。一対の取付片３２ａ，３２ｂは、幅方向Ｄ２に距離をあけて互いに平行に位置する。取付片３２ａ，３２ｂはそれぞれ、フック状の突起３２１ａ，３２１ｂを有する。 The pair of attachment pieces 32a and 32b protrude in the same direction in the thickness direction D3. The pair of attachment pieces 32a and 32b are positioned parallel to each other with a distance in the width direction D2. The attachment pieces 32a and 32b have hook-shaped protrusions 321a and 321b, respectively.
　ベース３に隣接した位置に固定される光源ブロック４ａは、ＬＥＤ（発光ダイオード）である光源２ａと、光源２ａの発光を制御するように構成された回路２５ａと、光源２ａと回路２５ａを収容するケース４１ａとを備える（図１参照）。ベース３を挟んで光源ブロック４ａとは反対側に固定される光源ブロック４ｂは、ＬＥＤ（発光ダイオード）である光源２ｂと、光源２ｂの発光を制御するように構成された回路２５ｂと、光源２ｂと回路２５ｂを収容するケース４１ｂとを備える。 A light source block 4a fixed at a position adjacent to the base 3 houses a light source 2a that is an LED (light emitting diode), a circuit 25a configured to control light emission of the light source 2a, and the light source 2a and the circuit 25a. A case 41a (see FIG. 1). A light source block 4b fixed on the opposite side of the light source block 4a across the base 3 includes a light source 2b that is an LED (light emitting diode), a circuit 25b configured to control light emission of the light source 2b, and a light source 2b. And a case 41b for housing the circuit 25b.
　ベース３に対する導光体１の装着は、以下のように行われる。 The mounting of the light guide 1 to the base 3 is performed as follows.
　キャビネット５に固定されたベース３に対して、本体部１１の拡散面１１２が上を向く姿勢で導光体１が近づけられ、導光体１が有する一対の溝１６ａ，１６ｂ内に、ベース３が有する一対の取付片３２ａ，３２ｂが、一対一で挿入される。溝１６ａ内においては、導光体１の取付部１３ａに設けられた突起１３１ａが、ベース３の取付片３２ａに設けられた突起３２１ａに引っ掛かる（図４参照）。溝１６ｂ内においては、導光体１の取付部１３ｂに設けられた突起１３１ｂが、ベース３の取付片３２ｂに設けられた突起３２１ｂに引っ掛かる。これにより、導光体１はベース３に支持される。 The light guide 1 is brought close to the base 3 fixed to the cabinet 5 with the diffusing surface 112 of the main body 11 facing upward, and the base 3 is placed in the pair of grooves 16 a and 16 b of the light guide 1. A pair of attachment pieces 32a and 32b are inserted one-on-one. In the groove 16a, the protrusion 131a provided on the attachment portion 13a of the light guide 1 is caught by the protrusion 321a provided on the attachment piece 32a of the base 3 (see FIG. 4). In the groove 16 b, the protrusion 131 b provided on the attachment portion 13 b of the light guide 1 is caught by the protrusion 321 b provided on the attachment piece 32 b of the base 3. Thereby, the light guide 1 is supported by the base 3.
　なお、このようにベース３が先にキャビネット５に固定されるのでなく、ベース３と導光体１と光源ブロック４ａ，４ｂが先に組み合わせられ、そのうえで、キャビネット５にベース３が固定されてもよい。本実施形態の照明装置８において、光源ブロック４ａ，４ｂはそれぞれ装着と取り外しが自在である。 The base 3 is not first fixed to the cabinet 5 in this way, but the base 3, the light guide 1, and the light source blocks 4 a and 4 b are combined first, and then the base 3 is fixed to the cabinet 5. Good. In the illuminating device 8 of the present embodiment, the light source blocks 4a and 4b can be attached and detached, respectively.
　導光体１がベース３に装着された状態において、本体部１１が有する拡散面１１２は、固定板３１の一面（下面）に接触又は近接して位置する。導光体１の両端の取付部１３ａ，１３ｂは、ベース３が有する取付片３２ａ，３２ｂの側方を覆い、照明装置８全体の側壁を形成する。 In the state where the light guide 1 is mounted on the base 3, the diffusion surface 112 of the main body 11 is located in contact with or close to one surface (lower surface) of the fixing plate 31. The attachment portions 13a and 13b at both ends of the light guide 1 cover the sides of the attachment pieces 32a and 32b of the base 3, and form the side walls of the entire lighting device 8.
　本実施形態の照明装置８において、照明光を得るには、ベース３に導光体１が装着された状態で、光源ブロック４ａ，４ｂの光源２ａ，２ｂを発光させ、導光体１が有する本体部１１の入射面１１１ａ，１１１ｂに光を入射させる。 In the illuminating device 8 of this embodiment, in order to obtain illumination light, the light source 2 has light sources 2 a and 2 b of the light source blocks 4 a and 4 b with the light guide 1 mounted on the base 3. Light is incident on the incident surfaces 111 a and 111 b of the main body 11.
　なお、本実施形態では、本体部１１は長さ方向Ｄ１の両端に入射面１１１ａ，１１１ｂを有するが、入射面１１１ａ，１１１ｂの一方だけを有することも可能である。つまり、本実施形態では、本体部１１の長さ方向Ｄ１の両側に光源ブロック４ａ，４ｂが配置されるが、本体部１１の長さ方向Ｄ１の一側にだけ光源ブロック４ａが配置されることや、本体部１１の長さ方向Ｄ１の他側にだけ光源ブロック４ｂが配置されることも可能である。 In addition, in this embodiment, although the main-body part 11 has the entrance surfaces 111a and 111b in the both ends of the length direction D1, it is also possible to have only one of the entrance surfaces 111a and 111b. That is, in the present embodiment, the light source blocks 4a and 4b are arranged on both sides of the main body 11 in the length direction D1, but the light source block 4a is arranged only on one side of the main body 11 in the length direction D1. Alternatively, the light source block 4b can be disposed only on the other side of the length direction D1 of the main body 11.
　本体部１１の内部では、拡散面１１２で拡散された光が、直接或いは側面１１４ａ，１１４ｂでの全反射を介して、出射面１１３に向けて透過される。これにより、導光体１の本体部１１の下面である出射面１１３と、拡張部１２ａ，１２ｂの下面である拡張出射面１２１ａ，１２１ｂにまで光が透過され、これら一連の出射面１１３，１２１ａ，１２１ｂから、下方空間に向けて光が出射する。 Inside the main body 11, the light diffused by the diffusion surface 112 is transmitted toward the emission surface 113 directly or through total reflection at the side surfaces 114a and 114b. As a result, light is transmitted to the emission surface 113 which is the lower surface of the main body 11 of the light guide 1 and the extended emission surfaces 121a and 121b which are the lower surfaces of the extension portions 12a and 12b, and a series of these emission surfaces 113 and 121a. , 121b emits light toward the lower space.
　本実施形態の照明装置８では、本体部１１が有する出射面１１３と、一対の拡張部１２ａ，１２ｂが有する拡張出射面１２１ａ，１２１ｂとに、連続的な凹凸形状を設けている。 In the illuminating device 8 of the present embodiment, continuous uneven shapes are provided on the emission surface 113 of the main body 11 and the extended emission surfaces 121a and 121b of the pair of expansion portions 12a and 12b.
　前記凹凸形状は、幅方向Ｄ２に等間隔をあけて複数の凹条１４，１４…が平行に並んだ、波型の形状である。各凹条１４は、長さ方向Ｄ１に沿って伸びる一直線状の形状を有する。 The concavo-convex shape is a corrugated shape in which a plurality of concave strips 14, 14... Are arranged in parallel at equal intervals in the width direction D2. Each recess 14 has a straight shape extending along the length direction D1.
　図４に示すように、拡張出射面１２１ａ，１２１ｂにはそれぞれ、複数の凹条１４のうち一つが位置する。前記凹凸形状を形成する複数の凹条１４の一つが、拡張出射面１２１ａに位置する凹条１４ａであり、複数の凹条１４の他の一つが、拡張出射面１２１ｂに位置する凹条１４ｂである。 As shown in FIG. 4, one of the plurality of concave strips 14 is located on each of the extended light exit surfaces 121a and 121b. One of the plurality of recesses 14 forming the uneven shape is a recess 14a located on the extended exit surface 121a, and the other one of the plurality of recesses 14 is a recess 14b located on the extended exit surface 121b. is there.
　拡張出射面１２１ａには、一つの凹条１４ａの底１４１ａが位置する。底１４１ａは、厚み方向Ｄ３において凹条１４ａの最も凹んだ部分である。拡張出射面１２１ｂには、一つの凹条１４ｂの底１４１ｂが位置する。底１４１ｂは、厚み方向Ｄ３において凹条１４ｂの最も凹んだ部分である。 The bottom 141a of one recess 14a is located on the extended emission surface 121a. The bottom 141a is the most recessed portion of the groove 14a in the thickness direction D3. A bottom 141b of one concave strip 14b is located on the extended emission surface 121b. The bottom 141b is the most concave portion of the concave strip 14b in the thickness direction D3.
　より具体的に述べると、拡張出射面１２１ａにおいて設定される領域９２１ａ内に、一つの凹条１４ａの底１４１ａが位置する。領域９２１ａは、拡張出射面１２１ａが位置する領域９２ａを幅方向Ｄ２に二等分したときの、取付部１３ａに近い側（即ち、領域９３ａに近い側）の領域である。拡張出射面１２１ｂにおいて設定される領域９２１ｂ内には、一つの凹条１４ｂの底１４１ｂが位置する。領域９２１ｂは、拡張出射面１２１ｂが位置する領域９２ｂを幅方向Ｄ２に二等分したときの、取付部１３ｂに近い側（即ち、領域９３ｂに近い側）の領域である。 More specifically, the bottom 141a of one recess 14a is located in the region 921a set on the extended exit surface 121a. The region 921a is a region closer to the attachment portion 13a (ie, closer to the region 93a) when the region 92a where the extended emission surface 121a is located is equally divided into the width direction D2. The bottom 141b of one concave strip 14b is located in the region 921b set on the extended emission surface 121b. The region 921b is a region closer to the attachment portion 13b (ie, closer to the region 93b) when the region 92b where the extended emission surface 121b is located is equally divided into the width direction D2.
　また、拡張出射面１２１ａには、一つの凹条１４ａの内側面１４２ａが位置する。内側面１４２ａは、凹条１４ａの底１４１ａから幅方向Ｄ２の内側（出射面１１３の位置する側）に向けて連続する面である。内側面１４２ａにおいては、幅方向Ｄ２の内側に近い部分ほど、拡散面１１２からの厚み方向Ｄ３の距離が大きい。 Also, the inner side surface 142a of one concave strip 14a is located on the extended outgoing surface 121a. The inner side surface 142a is a surface that continues from the bottom 141a of the concave strip 14a toward the inner side in the width direction D2 (the side on which the emission surface 113 is located). On the inner side surface 142a, the closer to the inner side in the width direction D2, the greater the distance in the thickness direction D3 from the diffusion surface 112.
　拡張出射面１２１ｂには、凹条１４ｂの内側面１４２ｂが一つ位置する。内側面１４２ｂは、凹条１４ｂの底１４１ｂから幅方向Ｄ２の内側（出射面１１３の位置する側）に向けて連続する面である。内側面１４２ｂにおいては、幅方向Ｄ２の内側にいくほど、拡散面１１２からの厚み方向Ｄ３の距離が大きい。 The inner surface 142b of the concave strip 14b is located on the extended outgoing surface 121b. The inner side surface 142b is a surface that continues from the bottom 141b of the concave strip 14b toward the inner side in the width direction D2 (the side on which the emission surface 113 is located). In the inner side surface 142b, the distance in the thickness direction D3 from the diffusion surface 112 increases as it goes inward in the width direction D2.
　本実施形態の照明装置８では、拡張部１２ａ，１２ｂが有する拡張出射面１２１ａ，１２１ｂのうち、取付部１３ａ，１３ｂに近い箇所に、それぞれ凹条１４ａ，１４ｂの底１４１ａ，１４１ｂが位置する。拡張部１２ａ，１２ｂは、凹条１４ａ，１４ｂの底１４１ａ，１４１ｂが位置する部分において、光の透過する経路が最も絞られた形状である。 In the illuminating device 8 of the present embodiment, the bottoms 141a and 141b of the concave strips 14a and 14b are located at locations close to the mounting portions 13a and 13b, respectively, of the extended emission surfaces 121a and 121b of the extended portions 12a and 12b. The extended portions 12a and 12b have a shape in which the light transmission path is narrowed down at the portions where the bottoms 141a and 141b of the concave strips 14a and 14b are located.
　これにより、本体部１１で拡散した光が、拡張部１２ａ，１２ｂを通じて取付部１３ａ，１３ｂにまで至ることが抑制され、且つ、拡張出射面１２１ａ，１２１ｂからは大きな光量で光が出射される。拡張出射面１２１ａ，１２１ｂは、出射面１１３を拡張して発光面積を広げる機能を有する。 Thus, the light diffused in the main body 11 is suppressed from reaching the attachment portions 13a and 13b through the extension portions 12a and 12b, and light is emitted from the extension emission surfaces 121a and 121b with a large amount of light. The extended emission surfaces 121a and 121b have a function of expanding the emission surface 113 to increase the light emission area.
　また、出射面１１３とこれに連続する拡張出射面１２１ａ，１２１ｂには、凹凸が交互に並ぶ前記凹凸形状が設けられているので、光は出射時に拡散され、システムキッチンの下部領域を万遍なく照らす。これにより、使用者の眩しさが低減される。 In addition, since the projection surface 113 and the extended exit surfaces 121a and 121b that are continuous with the projection surface are provided with the concavo-convex shape in which the concavo-convex are alternately arranged, the light is diffused at the time of emission, and the entire lower area of the system kitchen is uniformly distributed. Illuminate. Thereby, a user's glare is reduced.
　加えて、複数の凹条１４，１４…の底部は、いずれも長さ方向Ｄ１に沿って視たときに円弧状をなす凹曲面状である。隣接する凹条１４，１４間に位置する凸条１５の頂部は、いずれも長さ方向Ｄ１に沿って視たときに円弧状をなす凸曲面状である。このような波型の凹凸形状を採用することにより、出射時に光が更に万遍なく拡散され、使用者の眩しさが低減される。その他、前記凹凸形状の設計に基づいて、出射される照明光の指向性、取出し効率等が調整自在である。 In addition, the bottoms of the plurality of concave stripes 14, 14... Are all concavely curved when viewed along the length direction D1. The tops of the ridges 15 located between the adjacent ridges 14 and 14 are both convex curved surfaces having an arc shape when viewed along the length direction D1. By adopting such a corrugated uneven shape, light is more evenly diffused at the time of emission, and the glare of the user is reduced. In addition, the directivity, extraction efficiency, and the like of the emitted illumination light can be adjusted based on the design of the uneven shape.
　図５には、本実施形態の照明装置８の変形例を示している。 FIG. 5 shows a modification of the lighting device 8 of the present embodiment.
　この変形例においては、導光体１の下面に、複数の凹条１４，１４…と複数の凸条１５，１５…が一つずつ交互に並んだ凹凸形状が設けられ、各凹条１４の底部が角張った形状を有し、各凸条１５の頂部が角張った形状を有する。この変形例の凹凸形状は、即ち鋸歯状である。 In this modified example, a concave and convex shape in which a plurality of concave strips 14, 14... And a plurality of convex strips 15, 15. The bottom has an angular shape, and the top of each ridge 15 has an angular shape. The uneven shape of this modification is a sawtooth shape.
　図６、図７には、本実施形態の照明装置８を浴室６に備えた設置例を示している。この設置例では、浴室６の天井板６１にベース３が固定され、ベース３に対して下方から導光体１が装着される。 6 and 7 show an installation example in which the lighting device 8 of the present embodiment is provided in the bathroom 6. In this installation example, the base 3 is fixed to the ceiling plate 61 of the bathroom 6, and the light guide 1 is attached to the base 3 from below.
　図７に鉛直断面で示すように、この設置例では、一対の板６１１ａ，６１１ｂで天井板６１が形成される。一対の板６１１ａ，６１１ｂの端縁は、水平方向に所定の距離をあけて、互いに向い合う。 As shown in a vertical section in FIG. 7, in this installation example, a ceiling plate 61 is formed by a pair of plates 611a and 611b. The edges of the pair of plates 611a and 611b face each other with a predetermined distance in the horizontal direction.
　一対の板６１１ａ，６１１ｂの端縁からは、それぞれ上方に向けて鉛直片６１２ａ，６１２ｂが延長される。互いに対向して位置する鉛直片６１２ａ，６１２ｂ間に、溝状の空隙６２が一直線状に形成され、この空隙６２内にベース３が固定される。 Vertical pieces 612a and 612b are extended upward from the end edges of the pair of plates 611a and 611b, respectively. A groove-like gap 62 is formed in a straight line between the vertical pieces 612 a and 612 b located opposite to each other, and the base 3 is fixed in the gap 62.
　この設置例では、ベース３の固定板３１の幅方向Ｄ２の両端から、それぞれ上方に向けて延長片３１１ａ，３１１ｂが突出している。天井板６１の鉛直片６１２ａ，６１２ｂとベース３の延長片３１１ａ，３１１ｂが、締結具６３によって共に締結されることで、天井板６１にベース３が固定される。 In this installation example, extension pieces 311a and 311b protrude upward from both ends in the width direction D2 of the fixing plate 31 of the base 3, respectively. The base 3 is fixed to the ceiling board 61 by the vertical pieces 612a and 612b of the ceiling board 61 and the extension pieces 311a and 311b of the base 3 being fastened together by the fasteners 63.
　天井板６１に固定されたベース３は、下方から視たときに、空隙６２の奥まった箇所に位置する。この空隙６２内に、出射面１１３と拡張出射面１２１ａ，１２１ｂを下方に向けた姿勢で導光体１が挿入されることで、導光体１がベース３に装着される。ベース３に装着された導光体１は、出射面１１３と拡張出射面１２１ａ，１２１ｂを含む下面を、下方の浴室空間に露出させて位置する。 The base 3 fixed to the ceiling board 61 is located in a deep part of the gap 62 when viewed from below. The light guide 1 is mounted on the base 3 by inserting the light guide 1 into the gap 62 with the exit surface 113 and the extended exit surfaces 121a and 121b facing downward. The light guide 1 mounted on the base 3 is positioned such that the lower surface including the emission surface 113 and the extended emission surfaces 121a and 121b is exposed to the bathroom space below.
　図８～図１０には、本実施形態の照明装置８を自動車７に備えた設置例を示している。この設置例では、自動車７の車室空間の天井７１にベース３が固定され、ベース３に対して下方から導光体１が装着される。 8 to 10 show installation examples in which the lighting device 8 of the present embodiment is provided in a car 7. FIG. In this installation example, the base 3 is fixed to the ceiling 71 of the passenger compartment space of the automobile 7, and the light guide 1 is attached to the base 3 from below.
　自動車７の車室空間には、前部座席７２と後部座席７３が前後に並んで位置し、これら座席７２，７３の上方に天井７１が位置する。 The front seat 72 and the rear seat 73 are positioned side by side in the passenger compartment space of the automobile 7, and the ceiling 71 is positioned above the seats 72 and 73.
　図８の設置例では、本実施形態の照明装置８が天井７１に装着された状態において、導光体１の長さ方向Ｄ１が、自動車７の前後方向と平行である。導光体１の幅方向Ｄ２が、自動車の左右方向と平行である。導光体１の厚み方向Ｄ３が、自動車の上下方向と平行である。 In the installation example of FIG. 8, the length direction D <b> 1 of the light guide 1 is parallel to the front-rear direction of the automobile 7 in a state where the lighting device 8 of the present embodiment is mounted on the ceiling 71. The width direction D2 of the light guide 1 is parallel to the left-right direction of the automobile. The thickness direction D3 of the light guide 1 is parallel to the vertical direction of the automobile.
　照明装置８は、天井７１の左右方向の中央部分に、一つだけ位置する。前後の光源ブロック４ａ，４ｂにおける光源２ａ，２ｂの発光は、天井７１に配置されたスイッチ７４の操作によって制御される。スイッチ７４は、全ての座席７２，７３から操作可能な位置に配置されることが好ましい。 Only one lighting device 8 is located in the central portion of the ceiling 71 in the left-right direction. The light emission of the light sources 2 a and 2 b in the front and rear light source blocks 4 a and 4 b is controlled by operating a switch 74 disposed on the ceiling 71. The switch 74 is preferably disposed at a position where it can be operated from all the seats 72 and 73.
　光源２ａ，２ｂは、調光と調色の少なくとも一方が可能なＬＥＤである。前後の光源ブロック４ａ，４ｂでの光源２ａ，２ｂの発光のオンオフが個別に制御され、且つ、調光と調色の少なくとも一方が制御されることで、グラデーション状態を含む多様な車内照明が実現される。 The light sources 2a and 2b are LEDs capable of at least one of light control and color control. The on / off of light emission of the light sources 2a and 2b in the front and rear light source blocks 4a and 4b is individually controlled, and at least one of dimming and toning is controlled, thereby realizing various interior lighting including a gradation state Is done.
　図９の設置例では、本実施形態の照明装置８が、左右方向に距離をあけて二つ平行に配置されている。各照明装置８において、前後の光源ブロック４ａ，４ｂでの光源２ａ，２ｂの発光は、天井７１に配置された複数のスイッチ７４の操作によって、一対一で制御される。この設置例では、例えば四箇所に設置されたスイッチ７４の操作によって、各照明装置８の光源ブロック４ａ，４ｂの発光が個別に制御されることで、多様な車内照明が実現可能される。 In the installation example of FIG. 9, two illumination devices 8 of the present embodiment are arranged in parallel with a distance in the left-right direction. In each illumination device 8, the light emission of the light sources 2 a and 2 b in the front and rear light source blocks 4 a and 4 b is controlled on a one-to-one basis by operating a plurality of switches 74 arranged on the ceiling 71. In this installation example, for example, by operating the switches 74 installed at four locations, the light emission of the light source blocks 4a and 4b of each lighting device 8 is individually controlled, thereby realizing various interior lighting.
　図１０の設置例では、本実施形態の照明装置８が、前後方向に距離をあけて二つ平行に配置されている。 In the installation example of FIG. 10, two illumination devices 8 of the present embodiment are arranged in parallel with a distance in the front-rear direction.
　この設置例では、本実施形態の照明装置８が天井７１に装着された状態において、導光体１の長さ方向Ｄ１が、自動車７の左右方向と平行である。導光体１の幅方向Ｄ２が、自動車の前後方向と平行である。導光体１の厚み方向Ｄ３が、自動車の上下方向と平行である。 In this installation example, the length direction D1 of the light guide 1 is parallel to the left-right direction of the automobile 7 in a state where the lighting device 8 of the present embodiment is mounted on the ceiling 71. The width direction D2 of the light guide 1 is parallel to the front-rear direction of the automobile. The thickness direction D3 of the light guide 1 is parallel to the vertical direction of the automobile.
　各照明装置８の光源ブロック４ａ，４ｂの発光は、天井７１に配置された複数のスイッチ７４の操作によって、制御される。この設置例では、例えば四箇所に設置されたスイッチ７４の操作により、光源ブロック４ａ，４ｂの発光が個別に制御されることで、多様な照明が実現される。 The light emission of the light source blocks 4 a and 4 b of each lighting device 8 is controlled by operating a plurality of switches 74 arranged on the ceiling 71. In this installation example, various illuminations are realized by individually controlling the light emission of the light source blocks 4a and 4b by operating the switches 74 installed at four places, for example.
　以上、添付図面に基づいて述べたように、本実施形態の照明装置８は、導光体１と、導光体１に光を入射させるための光源２ａ，２ｂと、導光体１を支持するベース３とを具備する。導光体１は、互いに直交する長さ方向Ｄ１、幅方向Ｄ２及び厚み方向Ｄ３を有する。 As described above with reference to the accompanying drawings, the illumination device 8 of the present embodiment supports the light guide 1, the light sources 2 a and 2 b for making light incident on the light guide 1, and the light guide 1. And a base 3 to be provided. The light guide 1 has a length direction D1, a width direction D2, and a thickness direction D3 that are orthogonal to each other.
　導光体１は、本体部１１と、本体部１１の一部から幅方向Ｄ２に沿って拡張された拡張部１２ａ，１２ｂと、拡張部１２ａ，１２ｂの幅方向Ｄ２の端部から延長して設けられた取付部１３ａ，１３ｂとを一体に備える。取付部１３ａ，１３ｂは、ベース３に連結される。 The light guide 1 extends from the main body 11, the extended portions 12a and 12b extended from a part of the main body 11 along the width direction D2, and the end portions of the extended portions 12a and 12b in the width direction D2. The provided mounting portions 13a and 13b are integrally provided. The attachment portions 13 a and 13 b are connected to the base 3.
　本体部１１は、光が入射するように長さ方向Ｄ１の端部に設けられた入射面１１１ａ，１１１ｂと、本体部１１の厚み方向Ｄ３の第一端に設けられた拡散面１１２と、本体部１１の厚み方向Ｄ２の第二端に設けられた出射面１１３とを含む。 The main body 11 includes incident surfaces 111a and 111b provided at end portions in the length direction D1 so that light enters, a diffusion surface 112 provided at a first end in the thickness direction D3 of the main body portion 11, and a main body. And an emission surface 113 provided at the second end of the portion 11 in the thickness direction D2.
　拡張部１２ａ，１２ｂは、出射面１１３と連続して位置する拡張出射面１２１ａ，１２１ｂを含む。出射面１１３と拡張出射面１２１ａ，１２１ｂは、複数の凹条１４，１４…が幅方向Ｄ２に距離をあけて並ぶ一連の凹凸形状を有する。 The extended portions 12a and 12b include extended exit surfaces 121a and 121b that are located continuously with the exit surface 113. The exit surface 113 and the extended exit surfaces 121a and 121b have a series of concave and convex shapes in which a plurality of concave strips 14, 14... Are arranged at a distance in the width direction D2.
　そのため、本実施形態の照明装置８では、ベース３に導光体１が装着されたコンパクトな構造（即ち、光拡散シートや保護板が不要な構造）でありながら、出射面１１３に拡張出射面１２１ａ，１２１ｂが加えられた広い発光面積で、外部を照らすことが可能である。しかも、出射面１１３と拡張出射面１２１ａ，１２１ｂは一連の前記凹凸形状を有するので、出射される光の拡散性、指向性、取出し効率等が、前記凹凸形状によって調整可能である。そのため、光拡散シートや保護板を備えない構造であっても、自在に調整された出射光が得られる。 Therefore, in the illuminating device 8 of the present embodiment, the extended light exit surface 113 is provided on the light exit surface 113 while having a compact structure in which the light guide 1 is mounted on the base 3 (that is, a structure that does not require a light diffusion sheet or a protective plate). It is possible to illuminate the outside with a wide light emitting area to which 121a and 121b are added. Moreover, since the exit surface 113 and the extended exit surfaces 121a and 121b have a series of the uneven shapes, the diffusibility, directivity, extraction efficiency, and the like of the emitted light can be adjusted by the uneven shapes. Therefore, freely adjusted emission light can be obtained even with a structure that does not include a light diffusion sheet or a protective plate.
　更に、本実施形態の照明装置８では、拡張出射面１２１ａのうち取付部１３ａに近い側の領域９２１ａに、複数の凹条１４，１４…のうち一つの凹条１４ａの底１４１ａが位置する。拡張出射面１２１ｂのうち取付部１３ｂに近い側の領域９２１ｂに、複数の凹条１４，１４…のうち一つの凹条１４ｂの底１４１ｂが位置する。 Furthermore, in the illuminating device 8 of the present embodiment, the bottom 141a of one of the plurality of concave strips 14, 14... Is located in the region 921a on the side close to the mounting portion 13a of the extended emission surface 121a. The bottom 141b of one recess 14b among the plurality of recesses 14, 14... Is located in a region 921b on the side closer to the attachment portion 13b in the extended emission surface 121b.
　そのため、本実施形態の照明装置８では、複数の凹条１４，１４…が並んだ前記凹凸形状で拡散性等が自在に調整されることに加えて、取付部１３ａ，１３ｂにまで光が回り込んでロスが生じることが、拡張出射面１２１ａ，１２１ｂに凹条１４ａ，１４ｂが位置することで抑制される。 Therefore, in the illuminating device 8 according to the present embodiment, in addition to the concavo-convex shape in which a plurality of concave stripes 14, 14. It is suppressed that the concave strips 14a and 14b are located on the extended exit surfaces 121a and 121b.
　更に、本実施形態の照明装置８において、前記凹凸形状は、複数の凹条１４，１４…と複数の凸条１５，１５…が一つずつ交互に並んだ形状であり、複数の凹条１４，１４…の底部がそれぞれ凹曲面状であり、複数の凸条１５，１５…の頂部がそれぞれ凸曲面状である。 Further, in the illumination device 8 of the present embodiment, the uneven shape is a shape in which a plurality of concave stripes 14, 14... And a plurality of convex stripes 15, 15. , 14... Are concavely curved, and the tops of the plurality of ridges 15, 15.
　そのため、本実施形態の照明装置８では、出射された光が一層万遍なく拡散される。 Therefore, in the illumination device 8 of the present embodiment, the emitted light is more evenly diffused.
　以上、照明装置について、添付図面に示す実施形態に基づいて説明したが、照明装置は前記の実施形態や設置例に限定されるものではなく、適宜の設計変更を行うことや、各例の構成を適宜組み合わせて適用することが可能である。 As described above, the lighting device has been described based on the embodiments shown in the accompanying drawings. However, the lighting device is not limited to the above-described embodiments and installation examples, and appropriate design changes and configurations of the examples are provided. Can be applied in appropriate combination.

Claims (3)

  1. 　互いに直交する長さ方向、幅方向及び厚み方向を有する導光体と、
    　前記導光体に光を入射させるための光源と、
    　前記導光体を支持するベースと、を具備し、
    　前記導光体は、
    　本体部と、
    　前記本体部の一部から前記幅方向に沿って拡張された拡張部と、
    　前記拡張部の前記幅方向の先端から延長して設けられ、前記ベースに連結される取付部と、を一体に備え、
    　前記本体部は、
    　前記光が入射するように前記長さ方向の端部に設けられた入射面と、
    　前記本体部の前記厚み方向の第一端に設けられた拡散面と、
    　前記本体部の前記厚み方向の第二端に設けられた出射面と、を含み、
    　前記拡張部は、
    　前記出射面と連続して位置する拡張出射面を含み、
    　前記出射面と前記拡張出射面は、
    　複数の凹条が前記幅方向に距離をあけて並ぶ一連の凹凸形状を有する
    　照明装置。     A light guide having a length direction, a width direction and a thickness direction orthogonal to each other;
    A light source for making light incident on the light guide;
    A base for supporting the light guide,
    The light guide is
    The main body,
    An extension part extended along the width direction from a part of the main body part;
    An extension portion provided extending from the widthwise tip of the extension portion and connected to the base; and
    The main body is
    An incident surface provided at an end of the length direction so that the light is incident;
    A diffusion surface provided at a first end of the body portion in the thickness direction;
    An emission surface provided at a second end in the thickness direction of the main body,
    The extension is
    Including an extended exit surface located continuously with the exit surface;
    The exit surface and the extended exit surface are
    A lighting device having a series of concave and convex shapes in which a plurality of concave stripes are arranged at a distance in the width direction.
  2. 　前記拡張出射面のうち前記取付部に近い側の領域に、前記複数の凹条のうち一つの凹条の底が位置する
    　請求項１に記載の照明装置。     The illuminating device according to claim 1, wherein a bottom of one of the plurality of concave stripes is located in a region of the extended emission surface close to the attachment portion.
  3. 　前記凹凸形状は、
    　前記複数の凹条と複数の凸条が、一つずつ交互に並んだ形状であり、
    　前記複数の凹条の底部がそれぞれ凹曲面状であり、
    　前記複数の凸条の頂部がそれぞれ凸曲面状である
    　請求項１又は２に記載の照明装置。     The uneven shape is
    The plurality of ridges and the plurality of ridges are alternately arranged one by one,
    Each of the bottoms of the plurality of concave stripes has a concave curved surface shape,
    The lighting device according to claim 1, wherein the tops of the plurality of ridges each have a convex curved surface shape.
PCT/JP2015/004389 2014-09-10 2015-08-31 Lighting device WO2016038843A1 (en)

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JP7526559B2 (en) 2019-09-02 2024-08-01 株式会社Lixil Lighting and bathroom

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011034862A (en) * 2009-08-04 2011-02-17 Colcoat Kk Line lighting system
JP2012119185A (en) * 2010-12-01 2012-06-21 Kurabo Ind Ltd Led lighting device
JP2013098513A (en) * 2011-11-07 2013-05-20 Panasonic Corp Led unit
JP2014110121A (en) * 2012-11-30 2014-06-12 Panasonic Corp Light guide member
JP2014170638A (en) * 2013-03-01 2014-09-18 Sharp Corp Lighting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011034862A (en) * 2009-08-04 2011-02-17 Colcoat Kk Line lighting system
JP2012119185A (en) * 2010-12-01 2012-06-21 Kurabo Ind Ltd Led lighting device
JP2013098513A (en) * 2011-11-07 2013-05-20 Panasonic Corp Led unit
JP2014110121A (en) * 2012-11-30 2014-06-12 Panasonic Corp Light guide member
JP2014170638A (en) * 2013-03-01 2014-09-18 Sharp Corp Lighting device

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