JP6057080B2 - Light guide and lighting device - Google Patents

Light guide and lighting device Download PDF

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JP6057080B2
JP6057080B2 JP2013199672A JP2013199672A JP6057080B2 JP 6057080 B2 JP6057080 B2 JP 6057080B2 JP 2013199672 A JP2013199672 A JP 2013199672A JP 2013199672 A JP2013199672 A JP 2013199672A JP 6057080 B2 JP6057080 B2 JP 6057080B2
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light guide
light
recesses
lens
recess
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JP2015065126A (en
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悠紀 倉滿
悠紀 倉滿
田中　義治
義治 田中
弘貴 福井
弘貴 福井
恒典 田中
恒典 田中
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Toyoda Gosei Co Ltd
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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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape

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

Description

本発明は導光体および照明装置に係り、詳しくは、略平板長尺状の導光体と、その導光体を備えた照明装置とに関するものである。   The present invention relates to a light guide and a lighting device, and more particularly to a substantially flat plate-like light guide and a lighting device including the light guide.

特許文献１には、矩形平板状の導光体の裏面側に光源を配置し、光源の直上に位置する導光体の表面に角錐状凹部を形成し、光源の放射光を角錐状凹部によって反射・屈折させることにより導光体の面方向全体に拡散・導光させ、導光体の表面全面を出射面として出射させる面状照明装置が開示されている。   In Patent Document 1, a light source is arranged on the back side of a rectangular flat light guide, a pyramidal recess is formed on the surface of the light guide located immediately above the light source, and the emitted light of the light source is transmitted by the pyramidal recess. A planar illumination device is disclosed that diffuses and guides light in the entire surface direction of a light guide by reflecting and refracting, and emits the entire surface of the light guide as an output surface.

特開２０１２−４３６１７号公報JP 2012-43617 A

従来より、自動車のオーナメントに照明装置を取り付けてイルミネーションを構成する技術（イルミネーション付オーナメント）が知られており、この技術に特許文献１の面状照明装置を用いることが考えられる。
しかし、横長で略平行四辺形状のオーナメントに特許文献１の面状照明装置を取り付けた場合には、前記光源の放射光を略平行四辺形状の隅々にまで拡散・導光させるのが難しいという問題がある。 2. Description of the Related Art Conventionally, a technique (illumination with illumination) is known in which an illumination device is attached to an automobile ornament to form an illumination. It is conceivable to use the planar illumination device of Patent Document 1 for this technology.
However, when the planar illumination device of Patent Document 1 is attached to a horizontally long and substantially parallelogram-shaped ornament, it is difficult to diffuse and guide the light emitted from the light source to every corner of the substantially parallelogram. There's a problem.

そこで、前記光源および前記角錐状凹部を横方向に２個以上配置することが考えられる。
しかし、１個の前記角錐状凹部で反射・屈折された光が、他の前記角錐状凹部に導光されて反射・屈折されるおそれがあり、前記導光体の出射面からの出射光が減少して発光効率が低下したり、出射面が均一に発光せず発光強度にムラが生じるという問題がある。 Therefore, it is conceivable to arrange two or more light sources and pyramidal recesses in the horizontal direction.
However, there is a possibility that the light reflected and refracted by one of the pyramidal recesses may be guided to the other pyramidal recesses and reflected and refracted, and the emitted light from the exit surface of the light guide There is a problem in that the light emission efficiency is reduced due to a decrease, and the emission surface does not emit light uniformly, and the light emission intensity is uneven.

本発明は前記問題を解決するためになされたものであって、以下の目的を有するものである。
（１）導光体の出射面からの出射光の減少を防止して発光効率を高めることが可能で、出射面を均一に発光させることにより発光強度のムラを低減可能な導光体を提供する。
（２）前記（１）の導光体を備えた照明装置を提供する。 The present invention has been made to solve the above problems, and has the following objects.
(1) Providing a light guide body that can prevent emission light from decreasing from the light exit surface of the light guide body and increase the light emission efficiency, and can reduce unevenness in light emission intensity by uniformly emitting light on the light output surface. To do.
(2) Provided is an illuminating device including the light guide of (1).

本発明者らは前記課題を解決するために鋭意検討を重ねた結果、下記のように本発明の各局面に想到した。   As a result of intensive studies in order to solve the above-mentioned problems, the present inventors have arrived at each aspect of the present invention as follows.

＜第１の局面＞
第１の局面は、
略平板長尺状の導光体であって、
導光体の短手方向に伸びる直線溝状の凹部が導光体の表面側に複数個形成され、
複数個の凹部はそれぞれ、導光体の長手方向に沿って非平行に並べて配置され、
複数個の凹部のうち、任意の凹部の平面視における中心点を通る垂線は、他の凹部とは交差せず、他の凹部の延伸方向に位置する導光体の端部よりも遠くの導光体の端部を通る。 <First aspect>
The first aspect is
It is a substantially flat plate-shaped light guide,
A plurality of linear groove-shaped recesses extending in the short direction of the light guide are formed on the surface side of the light guide,
Each of the plurality of recesses is arranged non-parallel along the longitudinal direction of the light guide,
Of the plurality of recesses, the perpendicular line passing through the center point of any recess in plan view does not intersect with the other recesses, but is farther from the end of the light guide located in the extending direction of the other recesses. It passes through the end of the light body.

第１の局面では、導光体の裏面を入射面として導光体内に入射された光が、複数個の凹部の内壁面を反射面として反射・屈折され、導光体内を面方向全体に拡散されて導光され、導光体の表面全面を出射面として出射される。   In the first aspect, light entering the light guide with the back surface of the light guide as the entrance surface is reflected and refracted with the inner wall surface of the plurality of recesses as the reflection surface, and diffuses through the light guide in the entire surface direction. Then, the light is guided and emitted with the entire surface of the light guide as the exit surface.

ここで、複数個の凹部はそれぞれ、導光体の長手方向に沿って非平行に並べて配置され、複数個の凹部のうち、任意の凹部の平面視における中心点を通る垂線は、他の凹部とは交差しない。
そのため、複数個の凹部のうち、任意の凹部で反射・屈折された光の多くが、他の凹部に導光されて反射・屈折され難くなるため、導光体の出射面からの出射光が減少して発光効率が低下するのを抑制すると共に、出射面が均一に発光せず発光強度にムラが生じるのを抑制できる。 Here, each of the plurality of recesses is arranged in a non-parallel manner along the longitudinal direction of the light guide, and among the plurality of recesses, a perpendicular passing through the center point in plan view of an arbitrary recess is another recess. Do not cross.
For this reason, most of the light reflected and refracted by any of the plurality of recesses is guided to other recesses and is not easily reflected or refracted. It is possible to suppress the light emission efficiency from being reduced and decrease, and to prevent the emission surface from emitting light uniformly and causing unevenness in the light emission intensity.

そして、複数個の凹部のうち、任意の凹部の平面視における中心点を通る垂線は、他の凹部の延伸方向に位置する導光体の端部よりも遠くの導光体の端部を通るため、略平板長尺状の導光体の端部まで隅々に光が拡散されて行き渡り、出射面をより均一に発光させて発光強度のムラを更に低減できる。
従って、第１の局面によれば、導光体の出射面からの出射光の減少を防止して発光効率を高めることが可能で、出射面を均一に発光させることにより発光強度のムラを低減可能な導光体を実現できる。 And the perpendicular which passes along the center point in the planar view of arbitrary recessed parts among several recessed parts passes through the edge part of the light guide far from the edge part of the light guide body located in the extending | stretching direction of another recessed part. Therefore, the light is diffused and spread to every corner of the substantially flat plate-shaped light guide, and the emission surface can emit light more uniformly, thereby further reducing the unevenness of the light emission intensity.
Therefore, according to the first aspect, it is possible to prevent emission light from decreasing from the exit surface of the light guide and increase the light emission efficiency, and to reduce unevenness in the light emission intensity by causing the exit surface to emit light uniformly. Possible light guides can be realized.

＜第２の局面＞
第２の局面は、第１の局面において、導光体の表面が略四角形である。
第２の局面では、長尺な略四角形（例えば、横長の略平行四辺形・台形・菱形など）の導光体であっても、第１の局面の前記作用・効果が確実に得られる。 <Second aspect>
In a second aspect, in the first aspect, the surface of the light guide is substantially rectangular.
In the second aspect, even if the light guide has a long and substantially quadrangular shape (for example, a horizontally long substantially parallelogram, trapezoid, or rhombus), the above-described operation and effect of the first aspect can be reliably obtained.

＜第３の局面＞
第３の局面は、
第１の局面または第２の局面の導光体と、
導光体の裏面側に配置された複数個の光源と
を備えた照明装置であって、
複数個の光源の中心軸はそれぞれ、複数個の凹部の中心点を通る。 <Third aspect>
The third aspect is
A light guide of the first aspect or the second aspect;
A lighting device comprising a plurality of light sources arranged on the back side of the light guide,
The central axes of the plurality of light sources respectively pass through the center points of the plurality of recesses.

第３の局面では、光源の直上に凹部の中心点が位置するため、光源の放射光は、導光体の裏面を入射面として導光体内に入射された後に、凹部によって効率的に反射・屈折されることから、第１の局面または第２の局面の前記作用・効果が確実に得られる照明装置を実現できる。   In the third aspect, since the center point of the concave portion is located immediately above the light source, the emitted light of the light source is efficiently reflected by the concave portion after entering the light guide body with the back surface of the light guide body as the incident surface. Since it is refracted, it is possible to realize an illuminating device that can reliably obtain the operation and effect of the first aspect or the second aspect.

＜第４の局面＞
第４の局面は、第３の局面において、
導光体の表面側に配置された装飾部材を備え、
装飾部材は遮光性を有する部分を備え、複数個の凹部は装飾部材の遮光性を有する部分によって被覆されている。 <Fourth aspect>
The fourth aspect is the third aspect,
A decorative member disposed on the surface side of the light guide;
The decorative member includes a light-shielding portion, and the plurality of concave portions are covered with the light-shielding portion of the decorative member.

第４の局面では、凹部とその直下に位置する光源とが、装飾部材の遮光性を有する部分によって被覆されるため、照明装置の外部から凹部および光源が見えるのを防止可能であり、凹部および光源を隠して意匠性を高めることができる。   In the fourth aspect, since the concave portion and the light source located immediately below it are covered by the light-shielding portion of the decorative member, it is possible to prevent the concave portion and the light source from being seen from the outside of the lighting device. The design can be enhanced by hiding the light source.

図１（Ａ）は、本発明を具体化した第１実施形態の照明装置１０の上面図。図１（Ｂ）は、照明装置１０の縦断面の端面図であり、図１（Ａ）におけるＸ−Ｘ矢示端面図。FIG. 1A is a top view of a lighting apparatus 10 according to a first embodiment that embodies the present invention. FIG. 1B is an end view of a longitudinal section of the lighting device 10, and is an end view taken along the line XX in FIG. 図２（Ａ）は、第１実施形態の照明装置１０の上面図（図１（Ａ）と同一図面）。図２（Ｂ）は、照明装置１０の導光体６０の上面図。FIG. 2A is a top view of the illumination device 10 according to the first embodiment (the same drawing as FIG. 1A). FIG. 2B is a top view of the light guide 60 of the lighting device 10. 第１実施形態の照明装置１０の要部縦断面の端面図。The end elevation of the important section longitudinal section of lighting installation 10 of a 1st embodiment. 図４（Ａ）は、本発明を具体化した第２実施形態の照明装置１００の上面図。図４（Ｂ）は、照明装置１００の要部縦断面の端面図であり、図４（Ａ）におけるＸ−Ｘ矢示端面図。FIG. 4A is a top view of the illumination device 100 according to the second embodiment that embodies the present invention. FIG. 4B is an end view of a longitudinal section of a main part of the lighting device 100, and is an end view taken along the line XX in FIG.

以下、本発明を具体化した各実施形態について図面を参照しながら説明する。尚、各実施形態において、同一の構成部材および構成要素については符号を等しくすると共に、同一内容の箇所については重複説明を省略する。
また、各図面では、説明を分かり易くするために、各実施形態の構成部材の寸法形状および配置箇所を誇張して模式的に図示してあり、各構成部材の寸法形状および配置箇所が実物とは必ずしも一致しないことがある。 Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In each embodiment, the same constituent members and constituent elements are denoted by the same reference numerals, and redundant description of the same contents is omitted.
Moreover, in each drawing, in order to make the explanation easy to understand, the dimensional shape and arrangement location of the constituent members of each embodiment are schematically illustrated in an exaggerated manner, and the dimensional shape and arrangement location of each constituent member are the real thing. May not always match.

＜第１実施形態＞
図１〜図３に示すように、第１実施形態の照明装置１０は、ガーニッシュ２０（挿通孔２１〜２３）、レンズ４０（本体部４１、凸部４２〜４４、凹部４５）、シート材５０、導光体６０（凹部６１，６２、傾斜面６３、白色塗装層６４、黒色塗装層６５）、ハウジング７０（収容凹部７１、接続部７２）、発光部材８１，８２（ＬＥＤ８３、配線基板８４）などを備え、自動車のイルミネーション付オーナメントとして用いられる。
ちなみに、オーナメントとは、自動車に取付けられるエンブレムや自動車メーカーのロゴ等の装飾品全般を指すものである。 <First Embodiment>
As shown in FIGS. 1 to 3, the illumination device 10 according to the first embodiment includes a garnish 20 (insertion holes 21 to 23), a lens 40 (a body portion 41, convex portions 42 to 44, a concave portion 45), and a sheet material 50. , Light guide 60 (recesses 61 and 62, inclined surface 63, white paint layer 64, black paint layer 65), housing 70 (accommodation recess 71, connection part 72), light emitting members 81 and 82 (LED 83, wiring board 84). Etc., and used as an ornament with automobile illumination.
By the way, ornament refers to all decorative items such as emblems attached to automobiles and automobile manufacturer logos.

ガーニッシュ２０における照明装置１０の該当部分は略平板状を成しており、厚み方向に貫通形成された挿通孔２１〜２３を備え、挿通孔２１〜２３はオーナメントの装飾用の文字符号「ＩＩＶ」を構成している。
尚、ガーニッシュ２０は、遮光性を有する合成樹脂材料の射出成形により一体形成されており、自動車のエクステリアまたはインテリアとして車両に取付固定される。 The corresponding portion of the illuminating device 10 in the garnish 20 has a substantially flat plate shape, and includes insertion holes 21 to 23 that are formed to penetrate in the thickness direction. Is configured.
The garnish 20 is integrally formed by injection molding of a synthetic resin material having light shielding properties, and is attached and fixed to a vehicle as an exterior or interior of an automobile.

ちなみに、ガーニッシュとは、自動車を装飾するパーツ全般を指し、例えば、エクステリアでは、車両サイド下部を小石の飛び跳ね等による傷付きから守るサイドシルガーニッシュや、バックドアに取り付けられるバックドアガーニッシュなどがあり、インテリアではシフトパネル周辺を飾るセンターガーニッシュなどがある。
また、装飾用の文字符号「ＩＩＶ」は例示であり、この文字符号に特別な意味は無い。 By the way, garnish refers to all parts that decorate automobiles.For example, in exterior, there are side sill garnish that protects the lower part of the vehicle from scratches caused by jumping pebbles, etc., and back door garnish that can be attached to the back door. Then there are center garnishes around the shift panel.
Also, the decorative character code “IIV” is merely an example, and this character code has no special meaning.

レンズ４０は、平面視で横長略平行四辺形の略平板状を成す本体部４１と、本体部４１の表面側から厚み方向に突出するように立設された凸部４２〜４４とを備え、凸部４２〜４４は装飾用の文字符号「ＩＩＶ」を構成している。
尚、レンズ４０は、適宜な色（例えば、青色など）に着色された有色透明な合成樹脂材料（例えば、アクリル樹脂など）の射出成形により一体形成されている。
また、凸部４２〜４４の先端部分は、平坦な頂面を形成し、略同一平面上に位置するように形成されている。
そして、図３に示すように、レンズ４０の裏面側には、僅かに凹んだ凹部４５が形成されている。 The lens 40 includes a main body 41 that has a substantially flat parallelogram shape in a plan view, and convex portions 42 to 44 that are erected so as to protrude in the thickness direction from the surface side of the main body 41. The convex portions 42 to 44 constitute a decorative character code “IIV”.
The lens 40 is integrally formed by injection molding of a colored transparent synthetic resin material (for example, acrylic resin) colored in an appropriate color (for example, blue).
Moreover, the front-end | tip part of the convex parts 42-44 forms a flat top surface, and is formed so that it may be located on substantially the same plane.
As shown in FIG. 3, a concave portion 45 that is slightly recessed is formed on the back surface side of the lens 40.

シート材５０は、レンズ４０の本体部４１より一回り小さな同一平面形状のシート状を成しており、透明な合成樹脂材料によって形成され、装飾用の各種加工（例えば、着色加工、ハーフミラー加工、模様の印刷加工など）が施されている。   The sheet material 50 has a sheet shape of the same plane shape that is slightly smaller than the main body portion 41 of the lens 40, and is formed of a transparent synthetic resin material. Various processing for decoration (for example, coloring processing, half mirror processing) , Pattern printing, etc.).

導光体６０は、シート材５０と同一平面形状の略平板状を成しており、透明な合成樹脂材料（例えば、アクリル樹脂、ポリカーボネート樹脂など）の射出成形により一体形成されている。
また、導光体６０の表面側には、断面が頂角９０゜の略三角形状で直線溝状の凹部６１，６２が穿設されている。 The light guide 60 has a substantially flat plate shape that is the same plane as the sheet material 50, and is integrally formed by injection molding of a transparent synthetic resin material (for example, an acrylic resin, a polycarbonate resin, or the like).
Further, on the surface side of the light guide 60, concave portions 61 and 62 having a substantially triangular shape with a vertical angle of 90 ° and linear groove shapes are formed.

そして、図３に示すように、導光体６０の裏面側の角部分全周には、４５゜の面取り加工が施された傾斜面（Ｃ面）６３が形成されている。
また、図３に示すように、導光体６０の側端面および傾斜面６３と、導光体６０の凹部６１，６２の直下部分（ＬＥＤ８３の放射光の入射領域）を除く裏面には、白色塗料が塗布された白色塗装層６４が形成され、白色塗装層６４の表面には黒色塗料が塗布された黒色塗装層６５が形成されている。 As shown in FIG. 3, an inclined surface (C surface) 63 that is chamfered at 45 ° is formed on the entire circumference of the corner portion on the back surface side of the light guide 60.
Further, as shown in FIG. 3, the back surface of the light guide 60 excluding the side end surface and the inclined surface 63 and the portion directly under the concave portions 61 and 62 of the light guide 60 (incident area of the emitted light of the LED 83) is white. A white paint layer 64 to which a paint is applied is formed, and a black paint layer 65 to which a black paint is applied is formed on the surface of the white paint layer 64.

ハウジング７０は、上面側が開口された箱状を成しており、ハウジング７０の底面部分に形成された収容凹部７１と、ハウジング７０の外周縁部と収容凹部７１とを接続する接続部７２とを備え、合成樹脂材料の射出成形により一体形成されている。
また、ハウジング７０の外周縁部の上端面は、レンズ４０の本体部４１の外周縁部の裏面側に対して、液密状態になるように接合固定されている。
そして、ハウジング７０は、ガーニッシュ２０の裏面側に対して取付固定されている。 The housing 70 has a box shape with an upper surface opened, and includes a housing recess 71 formed in the bottom surface portion of the housing 70 and a connection portion 72 that connects the outer peripheral edge of the housing 70 and the housing recess 71. And is integrally formed by injection molding of a synthetic resin material.
Further, the upper end surface of the outer peripheral edge portion of the housing 70 is bonded and fixed to the back surface side of the outer peripheral edge portion of the main body 41 of the lens 40 so as to be in a liquid-tight state.
The housing 70 is fixedly attached to the back side of the garnish 20.

尚、ハウジング７０とレンズ４０との接合固定の方法は、良好な液密状態が得られるならば、どのような方法（例えば、ネジ止め、接着、超音波溶着など）を用いてもよい。
また、ハウジング７０とガーニッシュ２０との取付固定の方法は、確実な固定状態が得られるならば、どのような方法（例えば、取付金具を用いる方法、ネジ止め、接着など）を用いてもよい。 As a method for joining and fixing the housing 70 and the lens 40, any method (for example, screwing, bonding, ultrasonic welding, etc.) may be used as long as a good liquid-tight state can be obtained.
In addition, as a method for fixing the housing 70 and the garnish 20, any method (for example, a method using a mounting bracket, screwing, adhesion, or the like) may be used as long as a secure fixing state can be obtained.

同一構成の発光部材８１，８２は、ＬＥＤ（Light Emitting Diode）８３と、ＬＥＤ８３が実装された配線基板８４とを備える。
発光部材８１，８２のＬＥＤ８３の中心軸である光軸はそれぞれ、導光体６０の凹部６１，６２の平面視中心を通るように配置されている。
尚、ＬＥＤ８３は、どのような光源（例えば、ＥＬ（Electro Luminescence）素子などの半導体発光素子、電球など）に置き換えてもよい。 The light emitting members 81 and 82 having the same configuration include an LED (Light Emitting Diode) 83 and a wiring board 84 on which the LED 83 is mounted.
The optical axes that are the central axes of the LEDs 83 of the light emitting members 81 and 82 are arranged so as to pass through the centers of the concave portions 61 and 62 of the light guide 60 in plan view, respectively.
The LED 83 may be replaced with any light source (for example, a semiconductor light emitting element such as an EL (Electro Luminescence) element, a light bulb, etc.).

［照明装置１０の組み立て方］
照明装置１０を組み立てるには、まず、発光部材８１，８２のＬＥＤ８３がハウジング７０の開口側を向くように、発光部材８１，８２をハウジング７０の収容凹部７１内に収容して取付固定する。
そして、ハウジング７０に形成されているコネクタ（図示略）と発光部材８１，８２の接続端子（図示略）とを、収容凹部７１内に配置された接続ケーブル（図示略）によって接続する。 [How to assemble lighting device 10]
To assemble the lighting device 10, first, the light emitting members 81, 82 are accommodated in the housing recesses 71 of the housing 70 and fixed so that the LEDs 83 of the light emitting members 81, 82 face the opening side of the housing 70.
Then, a connector (not shown) formed on the housing 70 and a connection terminal (not shown) of the light emitting members 81 and 82 are connected by a connection cable (not shown) disposed in the housing recess 71.

次に、導光体６０の凹部６１，６２が外方を向くように、導光体６０をハウジング７０内に収容し、導光体６０の外周縁部の裏面側をハウジング７０の接続部７２の内壁面に当接させる。
続いて、導光体６０の表面上にシート材５０を被着させ、平面視同一寸法形状の導光体６０とシート材５０とを位置ズレ無く重ね合わせる。 Next, the light guide 60 is accommodated in the housing 70 so that the concave portions 61 and 62 of the light guide 60 face outward, and the back surface side of the outer peripheral edge of the light guide 60 is connected to the connection portion 72 of the housing 70. It is made to contact with the inner wall surface.
Subsequently, the sheet material 50 is attached onto the surface of the light guide 60, and the light guide 60 and the sheet material 50 having the same size and shape in plan view are overlapped without misalignment.

そして、レンズ４０の凸部４２〜４４が外方を向くように、ハウジング７０の開口側にレンズ４０を被着させ、ハウジング７０の外周縁部の上端面と、レンズ４０の本体部４１の外周縁部の裏面側とを接合固定する。
すると、レンズ４０の本体部４１の裏面側と、ハウジング７０の接続部７２の内壁面との間で、シート材５０と導光体６０とが挟持固定され、レンズ４０に対してシート材５０および導光体６０が設定位置に位置決めされる。
その結果、レンズ４０とシート材５０と導光体６０とハウジング７０とが一体物となる。 Then, the lens 40 is attached to the opening side of the housing 70 so that the convex portions 42 to 44 of the lens 40 face outward, and the upper end surface of the outer peripheral edge portion of the housing 70 and the outer side of the main body portion 41 of the lens 40. Joining and fixing the back surface side of the peripheral edge.
Then, the sheet material 50 and the light guide 60 are sandwiched and fixed between the back surface side of the main body portion 41 of the lens 40 and the inner wall surface of the connection portion 72 of the housing 70. The light guide 60 is positioned at the set position.
As a result, the lens 40, the sheet material 50, the light guide 60, and the housing 70 are integrated.

そして、ガーニッシュ２０の挿通孔２１〜２３に対して、ガーニッシュ２０の裏面側から、レンズ４０の凸部４２〜４４を挿通させた状態で、ハウジング７０をガーニッシュ２０に取付固定すると、照明装置１０が一体物となって組立が完成する。
ここで、挿通孔２１〜２３に対する凸部４２〜４４の挿通をスムーズにした上で、挿通孔２１〜２３と凸部４２〜４４との隙間が小さくなるように、挿通孔２１〜２３および凸部４２〜４４の寸法形状が設定されている。 When the housing 70 is attached and fixed to the garnish 20 with the convex portions 42 to 44 of the lens 40 inserted through the insertion holes 21 to 23 of the garnish 20 from the back side of the garnish 20, the lighting device 10 is fixed. The assembly is completed as an integrated object.
Here, after smooth insertion of the convex portions 42 to 44 with respect to the insertion holes 21 to 23, the insertion holes 21 to 23 and the convex portions are made so that the gap between the insertion holes 21 to 23 and the convex portions 42 to 44 becomes small. The dimensions of the parts 42 to 44 are set.

その後、ハウジング７０に形成されているコネクタ（図示略）を車両のワイヤーハーネス（図示略）に接続し、車載バッテリ（図示略）からワイヤーハーネスを介して照明装置１０へ直流電源を供給させ、発光部材８１，８２のＬＥＤ８３を発光させる。   Thereafter, a connector (not shown) formed on the housing 70 is connected to a vehicle wire harness (not shown), and direct current power is supplied from the in-vehicle battery (not shown) to the lighting device 10 via the wire harness to emit light. The LEDs 83 of the members 81 and 82 are caused to emit light.

［照明装置１０の動作］
発光部材８１，８２のＬＥＤ８３の放射光は、導光体６０の裏面を入射面として導光体６０内に入射され、導光体６０の凹部６１，６２の内壁面を反射面として反射・屈折され、導光体６０内を面方向全体に拡散されて導光され、導光体６０の表面全面を出射面として出射される。 [Operation of Lighting Device 10]
The light emitted from the LEDs 83 of the light emitting members 81 and 82 is incident on the light guide 60 with the back surface of the light guide 60 as the incident surface, and is reflected and refracted with the inner wall surfaces of the recesses 61 and 62 of the light guide 60 as the reflecting surfaces. Then, the light guide body 60 is diffused and guided in the entire surface direction, and the entire surface of the light guide body 60 is emitted as the exit surface.

導光体６０の出射光は、レンズ４０の裏面を入射面としてレンズ４０内に入射され、ガーニッシュ２０から露出しているレンズ４０の凸部４２〜４４の頂面（先端部）から放射される。
その結果、凸部４２〜４４により形成された文字符号「ＩＩＶ」が発光し、その文字符号を照明装置１０の外部から良好に視認可能になる。 The light emitted from the light guide 60 enters the lens 40 with the back surface of the lens 40 as the incident surface, and is emitted from the top surfaces (tip portions) of the convex portions 42 to 44 of the lens 40 exposed from the garnish 20. .
As a result, the character code “IIV” formed by the convex portions 42 to 44 emits light, and the character code can be viewed well from the outside of the illumination device 10.

［第１実施形態の作用・効果］
第１実施形態によれば、以下の作用・効果を得ることができる。 [Operations and effects of the first embodiment]
According to the first embodiment, the following actions and effects can be obtained.

［１］導光体６０は平面視で横長略平行四辺形の略平板状（略平板長尺状）であり、導光体６０の短手方向に伸びる直線溝状で断面が頂角９０゜の略三角形状の凹部６１，６２が導光体６０の表面側に形成されている。   [1] The light guide 60 has a substantially flat plate shape (substantially flat plate shape) with a horizontally long parallelogram in a plan view, and has a straight groove shape extending in the short direction of the light guide 60 and a cross section of 90 ° apex angle. The substantially triangular recesses 61 and 62 are formed on the surface side of the light guide 60.

そして、２個の凹部６１，６２はそれぞれ、導光体６０の長手方向に沿って「ハの字形」に非平行に並べて配置されている。
また、図２（Ｂ）に示すように、２個の凹部６１，６２のうち、一方の凹部６１，６２の平面視における中心点Ｏ１，Ｏ２を通る垂線Ｖ１，Ｖ２は、他方の凹部６１，６２とは交差しない。
そのため、２個の凹部６１，６２のうち、一方の凹部６１，６２で反射・屈折された光の多くが、他方の凹部６１，６２に導光されて反射・屈折され難くなるため、導光体６０の出射面からの出射光が減少して発光効率が低下するのを抑制すると共に、出射面が均一に発光せず発光強度にムラが生じるのを抑制できる。 The two concave portions 61 and 62 are arranged in parallel with each other in a “C” shape along the longitudinal direction of the light guide 60.
Further, as shown in FIG. 2B, among the two recesses 61, 62, the perpendiculars V1, V2 passing through the center points O1, O2 in the plan view of one recess 61, 62 are the other recess 61, 62. Does not cross 62.
Therefore, since most of the light reflected and refracted by one of the two concave portions 61 and 62 is guided to the other concave portion 61 and 62 and is difficult to be reflected and refracted, the light is guided. The emission light from the emission surface of the body 60 can be prevented from decreasing and the light emission efficiency can be suppressed, and the emission surface can be prevented from emitting light uniformly and unevenness in emission intensity can be suppressed.

また、図２（Ｂ）に示すように、２個の凹部６１，６２のうち、一方の凹部の平面視における中心点Ｏ１，Ｏ２を通る垂線は、他方の凹部の延伸方向に位置する導光体６０の端部よりも遠くの導光体６０の端部６０ａ，６０ｂを通るため、平面視で横長略平行四辺形の導光体６０の端部６０ａ，６０ｂまで隅々に光が拡散されて行き渡り、出射面をより均一に発光させて発光強度のムラを更に低減できる。
従って、第１実施形態によれば、導光体６０の出射面からの出射光の減少を防止して発光効率を高めることが可能で、出射面を均一に発光させることにより発光強度のムラを低減可能な導光体６０を実現できる。 Further, as shown in FIG. 2B, the perpendicular line passing through the center points O1 and O2 in the plan view of one of the two recesses 61 and 62 is a light guide located in the extending direction of the other recess. Since the light passes through the end portions 60a and 60b of the light guide body 60 farther from the end portion of the body 60, light is diffused to every corner up to the end portions 60a and 60b of the horizontally elongated parallelogram light guide body 60 in plan view. Thus, the emission surface can be made to emit light more uniformly, and the unevenness of the emission intensity can be further reduced.
Therefore, according to the first embodiment, it is possible to prevent emission light from decreasing from the exit surface of the light guide 60 and increase the light emission efficiency, and to uniformly emit light by emitting light uniformly from the exit surface. A light guide 60 that can be reduced can be realized.

［２］導光体６０は平面視で横長略平行四辺形の略平板状であるが、平面視で長尺な略四角形（例えば、横長の台形・菱形など）の導光体６０であっても、前記［１］の作用・効果が確実に得られる。
尚、レンズ４０およびシート材５０の平面形状についても、導光体６０の平面形状に合わせて変更すればよい。 [2] The light guide 60 is a substantially flat parallelepipedal substantially flat plate shape in a plan view, but is a substantially quadrangular light guide body 60 (for example, a horizontally long trapezoid or a rhombus) in a plan view. However, the operation and effect of [1] can be obtained with certainty.
The planar shapes of the lens 40 and the sheet material 50 may be changed in accordance with the planar shape of the light guide 60.

［３］照明装置１０は、導光体６０と、導光体６０の裏面側に配置された発光部材８１，８２のＬＥＤ８３とを備え、発光部材８１，８２のＬＥＤ８３の中心軸はそれぞれ、導光体６０の凹部６１，６２の中心点Ｏ１，Ｏ２を通る。   [3] The lighting device 10 includes the light guide 60 and the LEDs 83 of the light emitting members 81 and 82 arranged on the back surface side of the light guide 60, and the central axes of the LEDs 83 of the light emitting members 81 and 82 are respectively guided. It passes through the center points O1, O2 of the concave portions 61, 62 of the light body 60.

すなわち、発光部材８１，８２のＬＥＤ８３の直上に、凹部６１，６２の中心点Ｏ１，Ｏ２が位置するため、ＬＥＤ８３の放射光は、導光体６０の裏面を入射面として導光体６０内に入射された後に、凹部６１，６２によって効率的に反射・屈折されることから、前記［１］［２］の作用・効果が確実に得られる照明装置１０を実現できる。   That is, since the center points O1 and O2 of the recesses 61 and 62 are located immediately above the LED 83 of the light emitting members 81 and 82, the emitted light of the LED 83 enters the light guide 60 with the back surface of the light guide 60 as the incident surface. Since the light is efficiently reflected and refracted by the concave portions 61 and 62 after being incident, the illumination device 10 can be realized in which the operations and effects of [1] and [2] can be obtained with certainty.

［４］照明装置１０は、導光体６０の表面側に配置されたレンズ４０と、レンズ４０の表面側に配置されたガーニッシュ２０とを備え、導光体６０の凹部６１，６２は、遮光性を有するガーニッシュ２０の直下に配置され、ガーニッシュ２０によって被覆されている。
すなわち、レンズ４０およびガーニッシュ２０は、導光体６０の表面側に配置された装飾部材を構成し、その装飾部材における遮光性を有する部分であるガーニッシュ２０により、導光体６０の凹部６１，６２が被覆されている。 [4] The illumination device 10 includes the lens 40 disposed on the surface side of the light guide 60 and the garnish 20 disposed on the surface side of the lens 40, and the recesses 61 and 62 of the light guide 60 are light-shielding. The garnish 20 is disposed directly under the garnish 20 and is covered with the garnish 20.
That is, the lens 40 and the garnish 20 constitute a decorative member disposed on the surface side of the light guide 60, and the garnish 20 that is a portion having a light shielding property in the decorative member causes the concave portions 61 and 62 of the light guide 60 to be formed. Is covered.

従って、照明装置１０では、導光体６０の凹部６１，６２とその直下に位置する発光部材８１，８２のＬＥＤ８３とが、ガーニッシュ２０によって被覆されるため、照明装置１０の外部から凹部６１，６２およびＬＥＤ８３が見えるのを防止可能であり、凹部６１，６２およびＬＥＤ８３を隠して意匠性を高めることができる。   Therefore, in the illuminating device 10, the recesses 61, 62 of the light guide 60 and the LEDs 83 of the light emitting members 81, 82 located immediately below the light guide 60 are covered with the garnish 20, so In addition, it is possible to prevent the LED 83 from being seen, and the concavities 61 and 62 and the LED 83 can be hidden to improve the design.

［５］レンズ４０は、板状の本体部４１と、本体部４１の表面側から厚み方向に突出する凸部４２〜４４とを有する。
ガーニッシュ２０は、厚み方向に貫通形成された挿通孔２１〜２３を有する。 [5] The lens 40 includes a plate-shaped main body 41 and convex portions 42 to 44 protruding in the thickness direction from the surface side of the main body 41.
The garnish 20 has insertion holes 21 to 23 that are formed through in the thickness direction.

そして、照明装置１０において、導光体６０はレンズ４０の裏面側に配置され、レンズ４０の凸部４２〜４４はガーニッシュ２０の裏面側から挿通孔２１〜２３に挿通されてガーニッシュ２０の表面側から突出（露出）している。
そのため、照明装置１０では、レンズ４０の平面形状を導光体６０の平面形状と略同一にして、凸部４２〜４４をレンズ４０の長手方向に並べて配置することが可能であり、前記［４］の作用・効果を更に高めることができる。 And in the illuminating device 10, the light guide 60 is arrange | positioned at the back surface side of the lens 40, and the convex parts 42-44 of the lens 40 are penetrated by the insertion holes 21-23 from the back surface side of the garnish 20, and are the surface side of the garnish 20 Protruding (exposed).
Therefore, in the illuminating device 10, the planar shape of the lens 40 can be made substantially the same as the planar shape of the light guide 60, and the convex portions 42 to 44 can be arranged in the longitudinal direction of the lens 40. ] Can be further enhanced.

［６］照明装置１０では、レンズ４０の凸部４２〜４４が文字符号「ＩＩＶ」を構成しているため、凸部４２〜４４の意匠性を更に高めることができる。   [6] In the illuminating device 10, since the convex portions 42 to 44 of the lens 40 constitute the character code “IIV”, the design of the convex portions 42 to 44 can be further improved.

［７］導光体６０の裏面側の角部分全周には、４５゜の面取り加工が施された傾斜面（Ｃ面）６３が形成されている。
ここで、傾斜面６３を設けず、導光体６０の側端面と裏面との成す角度を９０゜にした場合には、導光体６０内を導光されて側端面で反射された光が、導光体６０の表面側における角部分近傍の広い範囲に拡散され、その範囲の発光強度が高くなるため、導光体６０の出射面（表面）の発光強度にムラが生じる。 [7] An inclined surface (C surface) 63 that is chamfered at 45 ° is formed on the entire circumference of the corner portion on the back surface side of the light guide 60.
Here, when the inclined surface 63 is not provided and the angle formed between the side end surface and the back surface of the light guide 60 is 90 °, the light guided in the light guide 60 and reflected by the side end surface is reflected. The light is diffused over a wide range in the vicinity of the corner portion on the surface side of the light guide 60, and the light emission intensity in that range is increased, so that the light emission intensity on the exit surface (surface) of the light guide 60 is uneven.

そこで、導光体６０に傾斜面６３を形成することにより、導光体６０内を導光されて側端面で反射された光を、導光体６０の表面側における角部分近傍の狭い範囲Ｍだけに拡散させることが可能になり、導光体６０の出射面（表面）の発光強度に生じるムラを少なくできる。
尚、傾斜面６３の前記角度については、４５゜に限らず、導光体６０の寸法形状に合わせ、実験やシミュレーション等に基づいて適値に設定すればよい。 Therefore, by forming the inclined surface 63 on the light guide 60, the light guided in the light guide 60 and reflected by the side end face can be converted into a narrow range M near the corner portion on the surface side of the light guide 60. Therefore, it is possible to reduce the unevenness that occurs in the light emission intensity of the exit surface (surface) of the light guide 60.
The angle of the inclined surface 63 is not limited to 45 °, and may be set to an appropriate value based on experiments, simulations, or the like according to the size and shape of the light guide 60.

また、傾斜面６３を設けず、導光体６０の側端面と裏面との成す角度を９０゜にした場合には、導光体６０の裏面側の角部分に白色塗装層６４および黒色塗装層６５を塗布し難いため、導光体６０の裏面側の角部分が塗装層６４，６５から露出するおそれがある。
しかし、導光体６０の裏面側の角部分に傾斜面６３を形成すれば、導光体６０の裏面側の角部分にも塗装層６４，６５を容易に塗布することが可能になり、導光体６０の裏面側の角部分が塗装層６４，６５から露出するのを防止できる。 Further, when the inclined surface 63 is not provided and the angle formed between the side end surface and the back surface of the light guide 60 is 90 °, the white coating layer 64 and the black coating layer are formed at the corners on the back surface side of the light guide 60. Since 65 is difficult to apply, the corner portion on the back surface side of the light guide 60 may be exposed from the coating layers 64 and 65.
However, if the inclined surface 63 is formed in the corner portion on the back surface side of the light guide body 60, the coating layers 64 and 65 can be easily applied to the corner portion on the back surface side of the light guide body 60. It is possible to prevent the corner portion on the back surface side of the light body 60 from being exposed from the coating layers 64 and 65.

［８］導光体６０の側端面および傾斜面６３と、導光体６０の凹部６１，６２の直下部分（ＬＥＤ８３の放射光の入射領域）を除く裏面には、白色塗料が塗布された白色塗装層６４が形成されている。
そのため、発光部材８１，８２のＬＥＤ８３の放射光が、導光体６０内を導光され、導光体６０の側端面および傾斜面６３や、導光体６０の凹部６１，６２の直下部分を除く裏面に到達すると、その放射光は白色塗装層６４によって反射され、その後に導光体６０の出射面（表面）から出射される。 [8] White coated with white paint on the back surface of the light guide 60 except the side end surface and the inclined surface 63 and the portions directly under the concave portions 61 and 62 of the light guide 60 (incident area of the emitted light of the LED 83). A coating layer 64 is formed.
Therefore, the radiated light of the LED 83 of the light emitting members 81 and 82 is guided through the light guide 60, and the side end surface and the inclined surface 63 of the light guide 60 and the portions directly below the recesses 61 and 62 of the light guide 60 are detected. When reaching the back surface, the radiated light is reflected by the white coating layer 64 and then emitted from the exit surface (front surface) of the light guide 60.

すなわち、ＬＥＤ８３の放射光が、導光体６０の側端面および傾斜面６３や、導光体６０の凹部６１，６２の直下部分を除く裏面から外部へ漏出するのを白色塗装層６４が遮断するため、導光体６０の出射面からの出射光の減少を防止して発光効率を更に高めることができる。   That is, the white paint layer 64 blocks the radiated light of the LED 83 from leaking to the outside from the back surface except the side end surface and the inclined surface 63 of the light guide 60 and the portions directly below the recesses 61 and 62 of the light guide 60. For this reason, it is possible to prevent the decrease of the emitted light from the exit surface of the light guide 60 and further increase the light emission efficiency.

［９］ＬＥＤ８３の放射光が導光体６０内を導光され、白色塗装層６４に到達すると、大部分の光は白色塗装層６４によって反射されるが、僅かの光が白色塗装層６４を透過する。
そのため、白色塗装層６４を透過した光が、シート材５０とハウジング７０との隙間からレンズ４０を通して照明装置１０の外部へ漏出し、照明装置１０の意匠性が損なわれるおそれがある。 [9] When the radiated light of the LED 83 is guided through the light guide 60 and reaches the white paint layer 64, most of the light is reflected by the white paint layer 64, but a small amount of light passes through the white paint layer 64. To Penetrate.
Therefore, the light transmitted through the white coating layer 64 may leak out of the lighting device 10 through the lens 40 from the gap between the sheet material 50 and the housing 70, and the design of the lighting device 10 may be impaired.

しかし、白色塗装層６４の表面には、黒色塗料が塗布された黒色塗装層６５が形成されているため、白色塗装層６４を透過した光は、黒色塗装層６５により吸収・遮断されて外部へ漏出しないことから、照明装置１０の意匠性が損なわれるのを防止できる。   However, since the black paint layer 65 to which the black paint is applied is formed on the surface of the white paint layer 64, the light transmitted through the white paint layer 64 is absorbed and blocked by the black paint layer 65 to the outside. Since it does not leak, it can prevent that the designability of the illuminating device 10 is impaired.

［１０］レンズ４０の裏面側には、僅かに凹んだ凹部４５が形成されている。
ここで、凹部４５を設けず、レンズ４０の裏面側を平坦にした場合には、レンズ４０の裏面側とシート材５０とが密着し、その密着部分にニュートンリング（干渉縞模様）が発生し、照明装置１０の意匠性が損なわれるおそれがある。 [10] On the back surface side of the lens 40, a recessed portion 45 that is slightly recessed is formed.
Here, when the concave portion 45 is not provided and the back surface side of the lens 40 is flattened, the back surface side of the lens 40 and the sheet material 50 are in close contact with each other, and a Newton ring (interference fringe pattern) is generated in the close contact portion. The design of the lighting device 10 may be impaired.

そこで、レンズ４０の裏面側に凹部４５を形成し、凹部４５内の空気による空気層をレンズ４０の裏面側とシート材５０との間に生じさせることにより、レンズ４０の裏面側とシート材５０とが密着するのを阻止することで、ニュートンリングが発生しなくなるため、照明装置１０の意匠性が損なわれるのを防止できる。   Therefore, the concave portion 45 is formed on the back surface side of the lens 40, and an air layer due to the air in the concave portion 45 is generated between the back surface side of the lens 40 and the sheet material 50, whereby the back surface side of the lens 40 and the sheet material 50. Since the Newton ring will not generate | occur | produce by inhibiting that it adhere | attaches, it can prevent that the designability of the illuminating device 10 is impaired.

＜第２実施形態＞
図４に示すように、第２実施形態の照明装置１００は、ガーニッシュ２０（挿通孔２１〜２３）、導光体１２０（本体部１２１、凸部１２２〜１２４、凹部１２５，１２６、傾斜面１２７、白色塗装層１２８、黒色塗装層１２９）、ハウジング７０（収容凹部７１、接続部７２）、発光部材８１，８２（ＬＥＤ８３、配線基板８４）などを備え、自動車のイルミネーション付オーナメントとして用いられる。 Second Embodiment
As illustrated in FIG. 4, the illumination device 100 according to the second embodiment includes a garnish 20 (insertion holes 21 to 23), a light guide 120 (a main body 121, protrusions 122 to 124, recesses 125 and 126, and an inclined surface 127. , White coating layer 128, black coating layer 129), housing 70 (accommodating recess 71, connecting portion 72), light emitting members 81 and 82 (LED 83, wiring board 84), and the like, and used as an ornament with illumination of an automobile.

第２実施形態の照明装置１００において、第１実施形態の照明装置１０と異なるのは以下の点である。
［ア］第１実施形態のシート材５０および導光体６０が省かれている。 The illumination device 100 of the second embodiment differs from the illumination device 10 of the first embodiment in the following points.
[A] The sheet material 50 and the light guide 60 of the first embodiment are omitted.

［イ］第１実施形態のレンズ４０が、導光体１２０に置き換えられている。
導光体１２０は、第１実施形態のレンズ４０と平面視同一寸法形状の略平板状を成す本体部１２１と、本体部１２１の表面側から厚み方向に突出するように立設された凸部１２２〜１２４と、第１実施形態の導光体６０の凹部６１，６２と同一寸法形状の凹部１２５，１２６とを備える。
導光体１２０の凹部１２５，１２６の平面視における配置箇所は、導光体６０の凹部６１，６２と同じである（図１，図４を参照）。 [A] The lens 40 of the first embodiment is replaced with a light guide 120.
The light guide 120 includes a main body 121 that has a substantially flat plate shape having the same size as the lens 40 of the first embodiment, and a convex portion that protrudes from the surface of the main body 121 in the thickness direction. 122-124, and the recessed parts 125 and 126 of the same dimension shape as the recessed parts 61 and 62 of the light guide 60 of 1st Embodiment are provided.
The arrangement | positioning location in the planar view of the recessed parts 125 and 126 of the light guide 120 is the same as the recessed parts 61 and 62 of the light guide 60 (refer FIG. 1, FIG. 4).

［ウ］導光体１２０の凸部１２２〜１２４は、第１実施形態のレンズ４０の凸部４２〜４４と同一寸法形状である。
導光体１２０は、第１実施形態のレンズ４０と同じく、適宜な色に着色された有色透明な合成樹脂材料の射出成形により一体形成されている。 [C] The convex portions 122 to 124 of the light guide 120 have the same size and shape as the convex portions 42 to 44 of the lens 40 of the first embodiment.
Like the lens 40 of the first embodiment, the light guide 120 is integrally formed by injection molding of a colored transparent synthetic resin material colored in an appropriate color.

［エ］ハウジング７０の外周縁部の内壁面は、導光体１２０の本体部１２１の外周縁部の側面側に対して、液密状態になるように接合固定されている。   [D] The inner wall surface of the outer peripheral edge of the housing 70 is bonded and fixed to the side surface of the outer peripheral edge of the main body 121 of the light guide 120 so as to be in a liquid-tight state.

［オ］導光体１２０の裏面側の角部分全周には、４５゜の面取り加工が施された傾斜面（Ｃ面）１２７が形成されている。   [E] An inclined surface (C surface) 127 having a 45 ° chamfering process is formed on the entire circumference of the corner portion on the back surface side of the light guide 120.

［カ］導光体１２０の側端面および傾斜面１２７と、導光体１２０の凹部１２５，１２６の直下部分（ＬＥＤ８３の放射光の入射領域）を除く裏面には、白色塗料が塗布された白色塗装層１２８が形成され、白色塗装層１２８の表面には黒色塗料が塗布された黒色塗装層１２９が形成されている。   [F] White coated with white paint on the back surface of the light guide 120, except for the side end surface and the inclined surface 127 and the portions directly under the recesses 125 and 126 of the light guide 120 (incident area of the emitted light of the LED 83). A paint layer 128 is formed, and a black paint layer 129 coated with a black paint is formed on the surface of the white paint layer 128.

［照明装置１００の動作］
発光部材８１，８２のＬＥＤ８３の放射光は、導光体１２０の裏面を入射面として導光体１２０内に入射され、導光体１２０の凹部１２５，１２６の内壁面を反射面として反射・屈折され、導光体１２０内を面方向全体に拡散されて導光され、ガーニッシュ２０から露出している導光体１２０の凸部１２２〜１２４の頂面（先端部）から放射される。
その結果、凸部１２２〜１２４により形成された文字符号「ＩＩＶ」が発光し、その文字符号を照明装置１００の外部から良好に視認可能になる。 [Operation of Lighting Device 100]
The emitted light of the LED 83 of the light emitting members 81 and 82 is incident on the light guide 120 with the back surface of the light guide 120 as the incident surface, and is reflected and refracted with the inner wall surfaces of the recesses 125 and 126 of the light guide 120 as the reflecting surfaces. Then, the light guide 120 is diffused in the entire surface direction, guided, and emitted from the top surfaces (tip portions) of the convex portions 122 to 124 of the light guide 120 exposed from the garnish 20.
As a result, the character code “IIV” formed by the convex portions 122 to 124 emits light, and the character code can be viewed well from the outside of the illumination device 100.

［第２実施形態の作用・効果］
第２実施形態の照明装置１００によれば、第１実施形態の前記作用・効果に加えて、導光体１２０にレンズ４０の機能（装飾機能）を付与することにより、導光体６０とは別部材のレンズ４０を設けている第１実施形態の照明装置１０に比べて、低コスト化を図ることができる。 [Operation and Effect of Second Embodiment]
According to the illumination device 100 of the second embodiment, in addition to the functions and effects of the first embodiment, the function of the lens 40 (decoration function) is imparted to the light guide 120, so that the light guide 60 Compared with the illumination device 10 of the first embodiment in which the lens 40 as a separate member is provided, the cost can be reduced.

＜別の実施形態＞
本発明は前記各実施形態に限定されるものではなく、以下のように具体化してもよく、その場合でも、前記各実施形態と同等もしくはそれ以上の作用・効果を得ることができる。 <Another embodiment>
The present invention is not limited to the above-described embodiments, and may be embodied as follows. Even in this case, operations and effects equivalent to or higher than those of the above-described embodiments can be obtained.

［Ａ］導光体６０，１２０の凹部６１，６２，１２５，１２６は、２個に限らず、３個以上の適宜な個数にしてもよい。
その場合には、前記各実施形態と同じく、導光体の凹部毎に発光部材８１，８２を設ければよい。 [A] The number of the recesses 61, 62, 125, 126 of the light guides 60, 120 is not limited to two, and may be an appropriate number of three or more.
In that case, the light emitting members 81 and 82 may be provided for each concave portion of the light guide, as in the above embodiments.

［Ｂ］導光体６０，１２０の凹部６１，６２，１２５，１２６は、断面が頂角９０゜の略三角形状に限らず、前記［１］の作用・効果が得られるならば、どのような断面形状にしてもよい。   [B] The recesses 61, 62, 125, 126 of the light guides 60, 120 are not limited to a substantially triangular shape with a cross section of 90 °, and any operation and effect of [1] can be obtained. Various cross-sectional shapes may be used.

［Ｃ］ガーニッシュ２０は、車両用外装部材（例えば、サイドプロテクションモール、ピラー外装品、エンブレムなど）、車両用内装部材（例えば、ドアライニング、インテリアパネル、エンブレムなど）、車両外板（例えば、ボディ、ドア、バンパーなど）などの車両内外のどのような部材に置き換えてもよい。   [C] The garnish 20 includes a vehicle exterior member (for example, a side protection molding, a pillar exterior product, and an emblem), a vehicle interior member (for example, a door lining, an interior panel, and an emblem), and a vehicle outer plate (for example, a body , Doors, bumpers, etc.) may be replaced with any member inside or outside the vehicle.

［Ｄ］レンズ４０、シート材５０、導光体６０，１２０は、平面視で長尺な略四角形に限らず、どのような平面形状（例えば、長尺な略楕円状など）であってもよい。   [D] The lens 40, the sheet material 50, and the light guides 60 and 120 are not limited to a substantially rectangular shape that is long in plan view, but may have any planar shape (for example, a long, generally elliptical shape). Good.

［Ｅ］照明装置１０，１００は車両の照明に適用したものであるが、本発明は車両用に限らず、どのような物品（例えば、電気製品、家具など）の照明に適用してもよく、その場合には、ガーニッシュ２０を当該物品の外装部材に置き換えればよい。   [E] The lighting devices 10 and 100 are applied to the lighting of the vehicle, but the present invention is not limited to the vehicle, and may be applied to lighting of any article (for example, an electric product, furniture, etc.). In that case, the garnish 20 may be replaced with the exterior member of the article.

本発明は、前記各局面および前記各実施形態の説明に何ら限定されるものではない。特許請求の範囲の記載を逸脱せず、当業者が容易に想到できる範囲で種々の変形態様も本発明に含まれる。本明細書の中で明示した公報などの内容は、その全ての内容を援用によって引用することとする。   The present invention is not limited to the description of each aspect and each embodiment. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims. The contents of publications and the like specified in the present specification are all incorporated by reference.

１０，１００…照明装置
２０…ガーニッシュ（装飾部材）
２１〜２３…ガーニッシュ２０の挿通孔
４０…レンズ（装飾部材）
４１…レンズ４０の本体部
４２〜４４…レンズ４０の凸部
６０，１２０…導光体
６１，６２…導光体６０の凹部
１２１…導光体１２０の本体部
１２２〜１２４…導光体１２０の凸部
１２５，１２６…導光体１２０の凹部
７０…ハウジング
８１，８２…発光部材
８３…ＬＥＤ（光源） 10, 100 ... Lighting device 20 ... Garnish (decorative member)
21-23 ... Insertion hole 40 of garnish 20 ... Lens (decorative member)
41... Main body portions 42 to 44 of lens 40. Convex portions 60 and 120 of lens 40. Light guides 61 and 62. Concave portion 121 of light guide body 60. Main body portions 122 to 124 of light guide body 120. , Convex portions 125, 126 of the light guide 120, housings 81, 82, light emitting members 83, LEDs (light sources).

Claims (4)

略平板長尺状の導光体であって、
導光体の短手方向に伸びる直線溝状の凹部であって、断面が三角形状の凹部が導光体の出射面側に複数個形成され、
前記複数個の凹部はそれぞれ、導光体の長手方向に沿って非平行に並べて配置され、
前記複数個の凹部のうち、任意の凹部の平面視における中心点を通り、凹部の長手方向に伸びる方向に直交する垂線は、他の凹部とは交差せず、他の凹部の延伸方向に位置する導光体の外縁部よりも遠くの導光体の外縁部を通る導光体。 It is a substantially flat plate-shaped light guide,
A linear groove-like recess extending in the short direction of the light guide, and a plurality of triangular recesses are formed on the exit surface side of the light guide,
Each of the plurality of recesses is arranged non-parallel along the longitudinal direction of the light guide,
Among the plurality of recesses, Ri through the center point in the plan view of any recess, perpendicular line orthogonal to a direction extending in the longitudinal direction of the recess, do not cross the other recess, the extending direction of the other recess A light guide that passes through the outer edge of the light guide farther than the outer edge of the light guide located. 前記導光体の出射面が平面視略四角形である、
請求項１に記載の導光体。 Emitting surface of the light guide is substantially rectangular in plan view,
The light guide according to claim 1. 請求項１または請求項２に記載の導光体と、
前記導光体の入射面側に配置された複数個の光源と
を備えた照明装置であって、
前記複数個の光源の中心軸はそれぞれ、前記複数個の凹部の前記中心点を通る照明装置。 The light guide according to claim 1 or 2,
A lighting device comprising a plurality of light sources arranged on the incident surface side of the light guide,
Each of the plurality of light sources has a central axis that passes through the center point of the plurality of recesses. 前記導光体の表面側に配置された装飾部材を備え、
前記装飾部材は遮光性を有する部分を備え、前記複数個の凹部は前記装飾部材の遮光性を有する部分によって被覆されている、
請求項３に記載の照明装置。 A decorative member disposed on the surface side of the light guide,
The decorative member includes a light-shielding portion, and the plurality of recesses are covered with the light-shielding portion of the decorative member.
The lighting device according to claim 3.
JP2013199672A 2013-09-26 2013-09-26 Light guide and lighting device Active JP6057080B2 (en)

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