JP3715635B2 - Light source and the light guide member and a plane light emitting device - Google Patents

Light source and the light guide member and a plane light emitting device Download PDF

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JP3715635B2
JP3715635B2 JP2003176685A JP2003176685A JP3715635B2 JP 3715635 B2 JP3715635 B2 JP 3715635B2 JP 2003176685 A JP2003176685 A JP 2003176685A JP 2003176685 A JP2003176685 A JP 2003176685A JP 3715635 B2 JP3715635 B2 JP 3715635B2
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light
portion
surface
light source
emitting element
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JP2004140327A (en
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カリル カランタル
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日本ライツ株式会社
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【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は、半導体発光素子を用いて半導体発光素子のサイド方向に出射する光源と、この光源を中心に設けて放射方向に進んだ光線を平坦な表面部から出射する導光体と、これら光源と導光体を用いて高輝度な平面発光装置を得て、例えば鉄道信号灯、交通信号灯や大型のディスプレや車のテールランプ等に利用できる光源および導光体ならびに平面発光装置に関する。 The present invention includes a light source for emitting the side direction of the semiconductor light-emitting device using a semiconductor light emitting element, a light guide for emitting a light beam advances in the radial direction is provided around this light source from the flat surface portion, the light sources and to obtain a high-luminance plane emission device using a light guide, for example, railway signaling lamp, the light source and the light guide body can be used for tail lamps or the like of the traffic lights and large Display and cars as well as to the plane light-emitting device.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来の光源としては、リードフレームや基板上の載置面に半導体発光素子を載置し、この半導体発光素子からリードフレームや基板とは反対方向(半導体発光素子の上部表面方向)に出射される光を集光するため、透明樹脂等によって半導体発光素子の出射面側を砲弾形状にモールドをしたり、単に半導体発光素子を封印した構成が知られている。 The conventional light source, a semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, it is emitted in the opposite direction (the upper surface direction of the semiconductor light emitting element) and a lead frame or a substrate from the semiconductor light emitting element for condensing light, or the mold shell-shaped, just the configuration that sealed the semiconductor light-emitting device has been known an exit surface side of the semiconductor light-emitting device by a transparent resin or the like.
【0003】 [0003]
また、従来の導光体としては、矩形形状で4辺の1辺や2辺若しくは隅の近傍に光源を備え、導光体の表面部や裏面部にプリズム等の溝を施したり、凸形状や凹形状のドット等を設け、光源から離れる程、これら溝やドット等を多く設けるものが知られている。 As the conventional light guide, a light source on one side and two sides or corners near the four sides in rectangular shape, or subjected to a groove such as a prism surface portion and the back surface of the light guide, convex and concave dots or the like is provided for, as the distance from the light source, those provided many of these grooves or dots or the like are known.
【0004】 [0004]
さらに、従来の平面発光装置としては、上記の光源や導光体を用いたもので、砲弾形状にモールド成形した半導体発光素子や矩形形状にモールド成形した半導体発光素子チップ等やこれらをアレー状に並べた光源を表面部や裏面部に光源から離れる程多くプリズム等の溝や凸形状、凹形状のドット等を設けた導光体の側面や隅に光源を備えたものが知られている。 Further, the conventional planar light-emitting device, one using the above-mentioned light source and the light guide, the semiconductor light-emitting element chip, or the like, or which is molded to the semiconductor light-emitting device or a rectangular shape which is molded shell-shaped in an array groove or convex shape, such as large as the distance from the light source Sorting light source on the surface portion and the back surface prism, that a light source on a side surface or corner of concave dots or the like provided with the light guide is known. この平面発光装置では、光源の一方向から導光体内に光を導き、導光体の一方向から進んでくる光を表面部方向に反射させて表面部から出射させている。 In the planar light emitting device guides the light from one direction to the light guide body of the light source, the light coming proceed from one of the light guide is reflected in the surface portion direction and is emitted from the surface portion.
【0005】 [0005]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
上述した従来の光源は、リードフレームや基板上の載置面に半導体発光素子を載置し、リードフレームや基板とは反対方向(半導体発光素子の上部表面方向)から出射される光を集光するため、透明樹脂等によって半導体発光素子の出射面側を砲弾形状にモールドをしたり、単に半導体発光素子を封印した構成となっている。 Conventional light sources described above, the semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, condensing the light emitted from the opposite direction (the upper surface direction of the semiconductor light emitting element) and the lead frame or substrate to reason, it has become or the mold shell-shaped the emission surface side of the semiconductor light-emitting device by a transparent resin or the like, and simply sealed semiconductor light-emitting device structure. これにより、半導体発光素子の光は、リードフレームや基板上に載置した載置面の上方(半導体発光素子の表面からの出射方向)に出射される。 Thus, light from the semiconductor light-emitting element is emitted above the mounting surface is placed on the lead frame or substrate (emission direction from the surface of the semiconductor light-emitting device). このため、特に砲弾形状の場合には、指向性の強い(狭い出射角度の)ビームになって出射してしまう課題がある。 Therefore, especially in the case of shell-shaped has a problem that results in emitted as the high directivity (narrow emission angle) beam.
【0006】 [0006]
また、従来の導光体は、矩形形状で4辺の1辺や2辺若しくは隅の近傍に光源を備え、導光体の表面部や裏面部にプリズム等の溝を施したり、凸形状や凹形状のドット等を設け、光源から離れる程、これら溝やドット等を多く設ける構成となっている。 Further, conventional light guide has a light source 1 side and two sides or corners near the four sides in rectangular shape, or subjected to a groove such as a prism surface portion and the back surface of the light guide, convex Ya It provided a concave dots such as increasing distance from the light source, and has a configuration in which many of these grooves and dot like. これにより、光源からの光を一方向または二方向から取り込み、導光体の一方向から進んでくる光を表面部方向等へ反射や屈折等によって出射している。 Thus, incorporation of the light from the light source from one or two directions, and emitting by reflection or refraction, etc. of light coming proceed from one of the light guide to the surface portion direction and the like. 従って、入射面部から距離が長いと、両端での輝度差が出たり、側面部での出射等によるロス等の発生に課題がある。 Therefore, the distance from the incident surface is long, and out the luminance difference between the two ends, there is a problem in the generation of loss due emission or the like in the side surface portion.
【0007】 [0007]
さらに、従来の平面発光装置として、上記の光源や導光体を用い、砲弾形状にモールド成形した半導体発光素子や矩形形状にモールド成形した半導体発光素子チップ等やこれらをアレー状に並べた光源を表面部や裏面部に光源から離れる程多くプリズム等の溝や凸形状、凹形状のドット等を設けた導光体の側面や隅に光源を備えた構成となっている。 Further, as a conventional planar light-emitting device, using the above-mentioned light source and the light guide, a light source arranged molded with the molded semiconductor light-emitting element or a rectangle shape of the semiconductor light-emitting element chip, or the like, or in an array in shell-shaped groove or convex shape such as a lot more distant from the light source on the surface portion and the back surface prism, has a configuration including a light source side surface and the corner of concave dots or the like provided lightguide. これにより、光源の一方向から導光体内に光を導き、導光体の一方向から進んでくる光を表面部方向に反射させて表面部から出射させている。 Thus, guide the light from one direction to the light guide body of the light source, the light coming proceed from one of the light guide is reflected in the surface portion direction and is emitted from the surface portion. しかし、この構成では、光源からの光線が直接的に導光体の入射面部から進入する。 However, in this configuration, light from the light source enters from the incident surface of the direct light guide. しかも、光源自身に指向性が強くあるため、入射面部の近傍に光源の映り込みが現れてしまう課題がある。 Moreover, since the directional light source itself is strong, there is a problem that glare may appear in the light source in the vicinity of the incident surface.
【0008】 [0008]
また、アレー状に並べた光源の場合には、光源自身の指向性により輝度的に波のように斑が現れてしまう課題がある。 In the case of light sources arranged in an array, there is a problem that unevenness may appear as luminance to wave by the light source itself directivity.
さらに、図12(a),(b)に示すように、従来の光源40,41を本発明の導光体3を用いて平面発光装置50を構成した場合に於いても以下に説明するような課題がある。 Further, FIG. 12 (a), (b) as shown in, as described below even in a case where the planar light emitting device 50 of a conventional light sources 40 and 41 using the light guide 3 of the present invention there is a problem. 図12(a),(b)に於いて、導光体3の中心位置に光源40,41を配置するとき、導光体3の開口部21が円形状や四角形状なので、光源40,41を円や四角の環状に設けなければ成らない。 FIG. 12 (a), the at (b), the time of placing the light source 40 and 41 to the center position of the light guide 3, the opening 21 of the light guide 3 is circular and square shape, light sources 40 and 41 the not become to be provided to a circle or a square of the ring. このため、光源40,41の配置方法や必要空間やリード42等の接続配線等の課題がある。 Therefore, there is a problem of connection wirings such as the arrangement method and requires space and leads 42 of the light source 40 and 41. しかも、図12(a)に示すように、光源40,41自身の指向性により、光源40,41個々の光線L40,L41が放射状になり、はっきりとした光線の斑が発生してしまう課題がある。 Moreover, as shown in FIG. 12 (a), the light source 40 and 41 own directional, light sources 40 and 41 individual rays L40, L41 is radially and clear the problem spots of light occurs is there.
【0009】 [0009]
本発明は、上記のような課題を解決するためになされたもので、リードフレームや基板上の載置面に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行うように円柱形状や四角柱形状の上部の半導体発光素子に対向する位置が逆向きの円錐形状や四角錐形状に切除し、載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する円形または四角形状の開口部または裏面部に凹部を設けるとともに裏面部に前記入射部を中心として放射状に同心円上または平行に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に The present invention has been made to solve the above problems, a semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting device mounted on the mounting surface of the lead frame or substrate cone position facing the upper portion of the semiconductor light emitting element of cylindrical shape or a square pillar shape so as to perform total reflection at the surface provided at a position opposed to the opposite of the semiconductor light emitting element light emitted in the opposite direction of the mounting surface resected shape or a quadrangular pyramid shape, and the mold was light source to emit radially substantially parallel to the mounting surface, the incident part for guiding light from the light source is located in the center, a circular or rectangular inserting the light source and a concentric or on parallel provided a concave shape having an inclined portion facing the incident portion direction lightguide radially around the entrance portion to the back surface provided with a recess in the opening or the back portion, the light source the recess of the opening or the back portion 入し、光源から横方向の放射状に出射した光線を傾斜部で全反射や屈折して導光体の表面部から出射し、輝度が高く斑の無い発光が得られる光源および導光体ならびに平面発光装置を提供することにある。 Type, emits light rays radially emitted in the lateral direction from the light source from the surface portion of the total reflection and refraction to the light guide in the inclined portion, the light source and the light guide member and the plane with no emission of high spots luminance can be obtained and a light-emitting device.
【0010】 [0010]
【課題を解決するための手段】 In order to solve the problems]
上記課題を解決するため、本発明の請求項1に係る光源は、モールドが、下部が円柱形状を成し、半導体発光素子に対向する上部位置が円柱形状よりも外側に放射状の曲線を有した漏斗形状であるとともに上部位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面と放射状の曲線の曲面とで全反射を繰り返して漏斗形状の先端から水平に円周方向に放射状に出射することを特徴とする。 To solve the above problems, a light source according to claim 1 of the present invention, mold, bottom forms a cylindrical shape, an upper position facing the semiconductor light-emitting device had a radial curve outside the cylindrical shaped upper position is excised conically opposite with a funnel-shaped, while repeating total reflection at the curved surface of the conical surface and the radial curve of the conical horizontally circumferentially from the tip of the funnel-shaped characterized by radially emitted.
【0011】 [0011]
請求項1に係る光源は、モールドが、下部が円柱形状を成し、半導体発光素子に対向する上部位置が円柱形状よりも外側に放射状の曲線を有した漏斗形状であるとともに上部位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面と放射状の曲線の曲面とで全反射を繰り返して漏斗形状の先端から水平に円周方向に放射状に出射するので、 円錐形状の面と放射状の曲面とで全反射を繰り返し、漏斗形状の先端部から円周方向(360度の範囲を出射する)に半導体発光素子からの光を大部分出射することができる Light source according to claim 1, mold, bottom forms a cylindrical shape, opposite the upper position together with the upper position facing the semiconductor light emitting element is a funnel-shaped having a radially curved outwardly from cylindrical It has a cut shape to a cone shape, since the radially emitted horizontally in the circumferential direction from the tip of the funnel-shaped repeats total reflection at the curved surface of the conical surface and the radial curve of the conical surface of the conical and repeating total reflection and radial curved surface, the light from the semiconductor light emitting element (emitting a range of 360 degrees) circumferentially from the tip of the funnel-shaped can be largely emitted.
【0012】 [0012]
また、請求項2に係る光源は、モールドが、全体が略円錐形状を成し、半導体発光素子に対向する位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面で全反射をし、やや下方向に傾きを有して放射状に出射することを特徴とする。 The light source according to claim 2, mold, entirely a substantially conical shape, opposing positions has a shape formed by cutting a conical shape opposite to the semiconductor light-emitting device, all in the conical surface of the conical the reflected, characterized in that radially emitted with a slope slightly downwards.
【0013】 [0013]
請求項2に係る光源は、モールドが、全体が略円錐形状を成し、半導体発光素子に対向する位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面で全反射をし、やや下方向に傾きを有して放射状に出射するので、円錐面で全反射をして円周方向(360度の範囲を出射する)に半導体発光素子からの光を大部分出射することができる。 Light source according to claim 2, mold, entirely a substantially conical shape, the position facing the semiconductor light-emitting device has a cut shape to the conical shape of the inverted, total reflection on the conical surface of the conical and, since the radially emitted with a slope slightly downwards, to most emitting light from the semiconductor light emitting element by total reflection on the conical surface (emitting a range of 360 degrees) circumferentially can.
【0018】 [0018]
さらに、請求項に係る光源は、半導体発光素子を赤色発光または緑色発光または青色発光の単色光あるいは赤色発光、緑色発光、青色発光を一体にしたことを特徴とする。 Further, light source according to claim 3, the semiconductor light emitting element of red luminescence or green-emitting and blue-emitting monochromatic light or red light emission, green light emission, characterized in that the blue emitting integrally.
【0019】 [0019]
請求項に係る光源は、半導体発光素子を赤色発光または緑色発光または青色発光の単色光あるいは赤色発光、緑色発光、青色発光を一体にしたので、単色光は白色光を得ることができる。 Light source according to claim 3, monochromatic light or red light the semiconductor light-emitting element red emitting or green-emitting or blue-emitting, green-emitting, since the blue light together, monochromatic light white light can be obtained.
【0020】 [0020]
また、請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部または/および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けたことを特徴とする。 Further, the light guide body according to claim 4, about the incident portion in a surface portion and / or back surface with incidence portion located in the center of the light guide body is provided with a recess in the opening or the back portion to insert the light source characterized in that a concave shape having an inclined portion facing the incident portion direction concentrically radially.
【0021】 [0021]
請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部または/および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けたので、入射部から進入した光源からの光を傾斜部で全反射や屈折等をして導光体の表面部の中心から円周方向(360度の範囲)に放射状に出射することができる。 Lightguide according to claim 4, radially around the incident portion in a surface portion and / or back surface with incidence portion located in the center of the light guide body is provided with recesses in the opening or the back portion to insert the light source is provided with the concave shape having an inclined portion facing the incident portion direction on a concentric circle, the center of the surface portion of the total reflection and refraction etc. to light guide light from the light source entering from the incident portion is inclined portion it can be emitted radially in the circumferential direction (360 ° range) from.
【0022】 [0022]
さらに、請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けたことを特徴とする。 Further, the light guide according to claim 5 is located in the center of the entrance portion light guide, the surface portion and / or back surface provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source characterized in that a concave shape having an inclined portion facing parallel to the incident portion direction about the incident portion parts.
【0023】 [0023]
請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けたので、入射部から進入した光源からの光を傾斜部で全反射や屈折等をして導光体の表面部の中心から四方向(180度の範囲で四方向)に放射状に出射することができる。 Light guide according to claim 5 is located in the center of the entrance portion light guide, in a surface portion and / or back surface portion provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source is provided with the concave shape having an inclined portion facing parallel to the incident portion direction about the incident portion, the surface of the total reflection and refraction etc. to light guide light from the light source entering from the incident portion is inclined portion can be emitted radially (four directions in a range of 180 degrees) the four directions from the center of the part.
【0024】 [0024]
また、請求項に係る導光体は、入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であることを特徴とする。 Further, the light guide body according to claim 6, also the thickness is increased as the distance from the incident portion is characterized by a constant thickness.
【0025】 [0025]
請求項に係る導光体は、入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であるので、導光体が入射部から遠ざかるに従って導光体の厚さが厚くなる場合には、入射部から進入した光はすぐには導光体内から出られず、入射部の反対方向に進み、ここで反射されて入射部方向に向かう時にテーパーリークにより出射する、また導光体の厚さが一定である場合には、テーパ−リークにより出射する事無く光偏向素子によって屈折や全反射を起し出射する。 Light guide body according to claim 6, since also the thickness is increased as the distance from the incident portion is constant thickness, when the light guide thickness of the light guide body as the distance from the incident portion is thicker , the light which has entered from the incident portion is not get out of the light guide body immediately proceeds to the opposite direction of the incident portion, where it is reflected emitted by taper leakage when toward the incident portion direction, or the light guide If the thickness of the constant is tapered - leakage by causing emits refraction and total reflection by the light deflecting element without emitting.
【0026】 [0026]
さらに、請求項に係る導光体は、表面部および裏面部に対して球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四角柱、円柱等から成る形状を垂直にまたは三角柱、四角柱、半円柱等から成る形状を水平にランダムおよび直線状や曲線状ならびに任意の分布で光偏向素子を設けることを特徴とする。 Further, the light guide according to claim 7, the surface portion and part as well as a triangular pyramid sphere and ellipsoid with respect to the rear surface portion, conical, quadrangular pyramid, triangular prism, quadrangular prism, or a shape consisting of a cylinder or the like perpendicularly triangular prism, quadrangular prism, and providing a light deflector shape consisting of a semi-cylindrical or the like in the horizontal random and straight or curved and any distribution.
【0027】 [0027]
請求項に係る導光体は、表面部および裏面部に対して球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四角柱、円柱等から成る形状を垂直にまたは三角柱、四角柱、半円柱等から成る形状を水平にランダムおよび直線状や曲線状ならびに任意の分布で光偏向素子を設けるので、屈折させて外部に出射したり、一度屈折してから全反射して再度導光体に戻したり、全反射して反対側から出射したり全反射して再度導光体に戻すことができる。 Light guide according to claim 7, part and a triangular pyramid sphere and ellipsoid with respect to the surface portion and the back portion, conical, quadrangular pyramid, triangular prism, quadrangular prism, a vertically or triangular prism consisting of a cylinder or the like, quadrangular prism, since a shape composed of a semi-cylindrical or the like in the horizontal random and straight or curved and any distribution providing a light deflection element, or emitted outside by refracting, again totally reflected from the refracted once or return to the light guide, it can be returned to the totally reflected again lightguide or emitted from the opposite side is totally reflected.
【0028】 [0028]
また、請求項に係る平面発光装置は、リードフレームや基板上の載置面に半導体発光素子が載置され、半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い、載置面に略並行に放射状に出射するように半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向な放射状に出射した光線を傾斜部で全反射または/および屈折して導光体の表面部から出射することを特徴とする The planar light-emitting device according to claim 8, the semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, opposing the semiconductor light emitting element light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element perform total reflection surfaces provided at a position, guides a light source molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element to emit radially substantially parallel to the mounting surface, the light from the light source incidence portion located in the center, having an inclined portion facing the incident portion direction concentrically radially around the entrance portion in the surface portion All and back surface provided with a recess in the opening or the rear surface portion for inserting the light source concave and a light guide having a shape, inserting the light source into the recess of the opening or the back portion, the total reflection and / or refraction to the light guide a light beam emitted in the circumferential direction radially from the light source by the inclined portion characterized in that it emitted from the surface portion
【0029】 [0029]
請求項に係る平面発光装置は、リードフレームや基板上の載置面に半導体発光素子が載置され、半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い、載置面に略並行に放射状に出射するように半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向な放射状(360度の範囲)に出射した光線を傾斜部で全反射または/および屈折して導光体の表面部から出射するので Flat light emitting device according to claim 8, the semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, a position facing the semiconductor light emitting element light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element perform total reflection surfaces provided on the incident portion for guiding a light source molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element to emit radially substantially parallel to the mounting surface, the light from the light source the but centrally located concave shape having an inclined portion facing the incident portion direction concentrically radially around the entrance portion in the surface portion All and back surface provided with a recess in the opening or the rear surface portion for inserting the light source and a provided light guide body, by inserting the light source into the recess of the opening or the back section, the light rays emitted in the circumferential direction radially (360 ° range) from the light source is totally reflected and / or refracted by the inclined portion since emitted from the surface portion of the light guide Te 半導体発光素子からの出射光を効率良く導光体の表面部から出射でき、どの位置でも高輝度で斑の無い平面発光を得ることができる。 The light emitted from the semiconductor light emitting element can emit from the surface portion of efficiently guiding the light, it is possible to obtain a plane light emission without spots even in a high luminance at any position.
【0030】 [0030]
さらにまた、請求項に係る平面発光装置は、リードフレームや基板上の載置面に矩形状の半導体発光素子が載置され、半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状に半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行に出射した光線を傾斜部で全反射または/ Furthermore, the planar light-emitting device according to claim 9, rectangular semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, it forms a square pillar shape corresponding to the side surface of the semiconductor light emitting element, a semiconductor position facing the light emitting element is cut into a quadrangular pyramid shape in the opposite direction, a light source and a bottom side and a quadrangular pyramid square pillar is molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element in a shape to be connected , incident portion for guiding light from the light source is located in the center, in parallel around the incident portion in a surface portion and / or back surface portion provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source and a provided a concave shape having an inclined portion facing the incident portion direction lightguide, insert the light source into the recess of the opening or the back portion, in parallel to the exit in the recess of the opening or the back portion from the light source light at the inclined portion total reflection or / よび屈折して導光体の表面部から出射することを特徴とする。 Characterized in that by pre refracted emitted from the surface portion of the light guide.
【0031】 [0031]
請求項に係る平面発光装置は、リードフレームや基板上の載置面に矩形状の半導体発光素子が載置され、半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状に半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行(180度の範囲で四方)に出射した光線を傾斜部で全 Flat light emitting device according to claim 9, rectangular semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, it forms a square pillar shape corresponding to the side surface of the semiconductor light emitting device, the semiconductor light emitting element a position opposed to the resected quadrangular pyramid opposite the bottom side and a quadrangular pyramid square pole is molded by a transparent resin or the like in the direction of light emission from the semiconductor light emitting element in a shape that connects the light source, the light source incident portion for guiding the light is located in the center, parallel to the incident portion direction about the incident portion in a surface portion and / or back surface portion provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source and a light guide having a concave shape having an inclined portion facing to insert the light source into the recess of the opening or the back section, square in the range of the opening or parallel to the recess of the bottom (180 degrees from the light source the light rays emitted into) all in the inclined portion 射または/および屈折して導光体の表面部から出射するので、半導体発光素子からの出射光を効率良く導光体の四方の表面部から出射でき、どの位置でも高輝度の斑の無い平面発光を得ることができる。 Since emitted from elevation and / or the surface portion of the refracted light guide body, the light emitted from the semiconductor light emitting element can emit efficiently from all sides of the surface portion of the light guide, without plan also levelness of high luminance at any position light emission can be obtained.
【0032】 [0032]
またさらに、請求項10に係る平面発光装置は、赤色発光または緑色発光または青色発光の単色光を出射する各光源を3つの導光体の開口部または裏面部の凹部に各々挿入し、各導光体の表面部から赤色光、緑色光、青色光の各々を出射する3つの導光体を重ね合わせたことを特徴とする。 Furthermore, the planar light-emitting device according to claim 10, respectively inserted into the recess of the opening or the rear surface portion of the three light guide each light source for emitting monochromatic light of red-emitting or green-emitting and blue-emitting, Kakushirube the red light from the surface of the optical body, the green light, wherein the superposition of three light guide for emitting each of blue light.
【0033】 [0033]
請求項10に係る平面発光装置は、赤色発光または緑色発光または青色発光の単色光を出射する各光源を3つの導光体の開口部または裏面部の凹部に各々挿入し、各導光体の表面部から赤色光、緑色光、青色光の各々を出射する3つの導光体を重ね合わせたので、光源を制御することによって出射光がフルカラを表せることができるとともに赤色光、緑色光、青色光を同時に出射することによって白色光を得ることができる。 Flat light emitting device according to claim 10, respectively inserted into the recess of the red-emitting or green-emitting or opening of the blue light emitting three light guide each light source emitting a monochromatic light or a back surface portion, of each of the light guide the red light from the surface portion, the green light, since superposition of three light guide for emitting each of blue light, red light, green light with the emitted light by controlling the light source can be expressed a full color, blue it is possible to obtain white light by emitting light at the same time.
【0034】 [0034]
また、請求項11に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向で放射状に出射した光線を光偏向素子で全反射または/および屈折して導光体の表 The planar light-emitting device according to claim 11, the light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate a light source which is molded so as to emit radially substantially parallel to the opposing mounting surface subjected to total reflection at the surface provided at the position of the semiconductor light emitting device, located in the center of the entrance portion for guiding light from the light source, the light source also the thickness is increased as the distance from the incident portion provided with a recess in the opening or the rear surface portion for inserting a predetermined thickness, a light guide having a light deflecting element in a surface portion and / or back surface, and a reflector that reflects light other than emitting surface and the incident portion, inserting the light source into the recess of the opening or the back portion, the total reflection or the light rays emitted radially in the circumferential direction from the light source in the light deflector / Table and refracted light guide body 部から出射することを特徴とする。 Characterized in that it emitted from parts.
【0035】 [0035]
請求項11に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向で放射状に出射した光線を光偏向素子で全反射または/および屈折して導光体の表面部か Flat light emitting device according to claim 11, the semiconductor light-emitting light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate located in the center a light source is molded so as to emit radially substantially parallel opposing the mounting surface subjected to total reflection at the surface provided at the position of the element, the incident portion for guiding light from the light source, inserting the light source provided with a recess in the opening or the back portion thickness is increased as the distance from the incident portion or a constant thickness, a light guide having a light deflecting element in a surface portion and / or back surface, the incident portion and a reflector that reflects light other than emitting surface portion and by inserting the light source into the recess of the opening or the back portion, the total reflection and / or refraction of the light rays emitted radially in the circumferential direction from the light source in the optical deflecting element or the surface portion of the light guide and 出射するので、出射光の方向や視野角をコントロールすることができる。 Since emitted, it is possible to control the direction and viewing angle of the emitted light.
【0036】 [0036]
さらに、請求項12に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行に出射した光線を光 Furthermore, the planar light-emitting device according to claim 12, a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate form, the opposing position is excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected, an incident portion for guiding light from the light source located in the center, also the thickness is increased as the distance from the incident portion provided with a recess in a square shape openings or back surface for inserting the light source is constant thickness, the light in the surface portion and / or back surface portion a light guide having a deflection device, and a reflector that reflects light other than emitting surface and the incident portion, inserting the light source into the recess of the opening or the back portion, the concave portion of the opening portion or the back portion from a light source light rays in parallel to emit 向素子で全反射または/および屈折して導光体の表面部から出射することを特徴とする。 It is emitted from the surface of the total reflection and / or refraction to the light guide in a counter element and said.
【0037】 [0037]
請求項12に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行に出射した光線を光偏向素子 Flat light emitting device according to claim 12, forms a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate opposing positions excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected to a central incident portion for guiding light from the light source position, and also the thickness is increased as the distance from the incident portion provided with a recess in a square shape openings or back surface for inserting the light source is constant thickness, the surface portion and / or the optical deflecting element on the rear surface portion the light guide body and which is provided, and a reflector that reflects light other than emitting surface and the incident portion, inserting the light source into the recess of the opening or the back portion, parallel to the recess of the opening or the back portion from a light source optical deflection element emitted light rays 全反射または/および屈折して導光体の表面部から出射するので、出射光の方向や視野角をコントロールすることができる。 Since emitted from the surface of the total reflection and / or refraction to the light guide, it is possible to control the direction and viewing angle of the emitted light.
【0038】 [0038]
また、請求項13に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を反射する反射体とを備え、入射部から遠ざかるに The planar light-emitting device according to claim 13, the light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate a light source which is molded so as to emit radially substantially parallel to the opposing mounting surface subjected to total reflection at the surface provided at the position of the semiconductor light emitting device, located in the center of the entrance portion for guiding light from the light source, the light source an opening for inserting provided, located in the center and the lightguide thickness becomes thicker as the distance from the incident portion, the entrance portion for guiding light from a light source provided with a light deflecting element in a surface portion and / or back surface, a recess for inserting the light source on the back portion includes a lightguide thickness is increased toward the incident portion provided with an optical deflection element, and a reflector for reflecting the light in a surface portion and / or back surface, to move away from the incident part って厚さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を前記各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得ることを特徴とする。 What the facing surfaces inclined to each other lightguide thickness is increased toward the incident portion above the thickness is thicker lightguide, opening a light source wherein each of the light guide and the back surface portion was inserted into the recess of the cover the final back surface and side portions except for the incident portion in the reflector, is reflected in the incident portion direction by the reflector to light traveling in the light guide body thickness is increased as the distance from the entrance portion obtaining an exit light emitted by the light deflector and taper leak light, the outgoing light emitted by the light deflector and taper leaked light traveling in the light guide body thickness is increased toward the incident portion and the light guide body it is characterized in.
【0039】 [0039]
請求項13に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を反射する反射体とを備え、入射部から遠ざかるに従って Flat light emitting device according to claim 13, the semiconductor light-emitting light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate located in the center a light source is molded so as to emit radially substantially parallel opposing the mounting surface subjected to total reflection at the surface provided at the position of the element, the incident portion for guiding light from the light source, inserting the light source an opening is formed, a light guide body thickness is increased as the distance from the incident portion is provided with the light deflecting element in a surface portion and / or back surface, located in the center of the entrance portion for guiding light from the light source, the light source a recess for inserting the rear surface portion includes a lightguide thickness is increased toward the incident portion is provided with the light deflecting element in a surface portion and / or back surface, and a reflector that reflects light incident section as the distance from the さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を前記各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得るので、互いに出射方向の異なる導光体を用いることによって視野角の広い出射光を得ることかできるとともに多くの出射光を出射することができる。 Is is face to face the surface inclined to each other lightguide thickness is increased toward the incident portion above the thickened light guide, a light source in a recess of the opening and the back portion of each of said light guide inserted, cover the final back surface and side portions except for the incident portion in the reflector, light reflected to the incident portion direction by the reflector to light traveling in the light guide body thickness is increased as the distance from the entrance portion and outgoing light emitted by the deflecting element and tapered leak, since obtain outgoing light emitted by the light deflector and taper leaked light traveling in the light guide body which is thicker thickness toward the incident portion and the light guide body, with each other it can emit many outgoing light is possible either to obtain a wide output light viewing angle by using different light guide of the emission direction.
【0040】 [0040]
さらに、請求項14に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を Furthermore, the planar light-emitting device according to claim 14, a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate form, the opposing position is excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected, an incident portion for guiding light from the light source located in the center, a rectangular opening for inserting the light source is provided, and a light guide body thickness is increased as the distance from the incident portion is provided with the light deflecting element in a surface portion and / or back surface, the light from the light source located around the entrance portion for guiding, providing a square-shaped recess for inserting the light source on the back portion, the surface portion and / or the light guide thickness is increased toward the incident portion with the rear surface portion providing a light deflecting element and body, the light 射する反射体とを備え、入射部から遠ざかるに従って厚さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得ることを特徴とする。 And a reflector for morphism, and the facing surfaces inclined to each other lightguide becomes thick thickness toward the incident portion above the lightguide thickness becomes thicker as the distance from the incident portion, each light source the opening of the light guide body and inserted into the recess of the bottom, cover the final back surface and side portions except for the incident portion in the reflector, it proceeds to the lightguide thickness becomes thicker as the distance from the entrance portion light emitted light and the light deflection element the light proceeding to the light guide body thickness is increased toward the incident portion and the light guide for emitting a light deflector and taper leakage light reflected to the incident portion direction by the reflector to by and taper leakage; and obtaining outgoing light emitted.
【0041】 [0041]
請求項14に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を反射する Flat light emitting device according to claim 14, forms a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate opposing positions excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected to a central incident portion for guiding light from the light source position, and a rectangular opening for inserting the light source is provided, and a light guide body thickness is increased as the distance from the incident portion is provided with the light deflecting element in a surface portion and / or back surface, it guides the light from the light source located in the center of the incident portion, a rectangular recess for inserting the light source provided on the back surface portion, and the light guide thickness is increased toward the incident portion is provided with the light deflecting element in a surface portion and / or back surface portion , and it reflects the light 射体とを備え、入射部から遠ざかるに従って厚さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得るので、互いに出射方向の異なる導光体を用いることによって視野角の広い出射光を得ることができるとともに多くの出射光を出射することができる。 A Itay, the facing thickness as the thickness approaches the entrance portion above the thickened light guide are inclined to each other thickened lightguide surface as the distance from the incident portion, each of the guide light source reflected inserted into the recess of the opening and the back surface portion of the light body, cover the final back surface and side portions except for the incident portion in the reflector, the light traveling in the light guide body thickness is increased as the distance from the entrance portion and outgoing light emitted by the light deflector and taper leakage light reflected to the incident portion direction by the body, the light deflector and taper the light traveling in the light guide body thickness is increased toward the incident portion and the light guide body since obtaining the outgoing light emitted by the leakage can emit many outgoing light it is possible to obtain a wide output light viewing angle by using different light guide of the emission directions.
【0042】 [0042]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
以下、本発明の実施の形態を添付図面に基づき説明する。 It will be described below with reference to embodiments of the present invention in the accompanying drawings.
なお、本発明は、セラミック基板、液晶ポリマー樹脂基板、ガラス布エポキシ樹脂基板等の基板や金属薄板からなるリードフレーム上、またはこれら基板やリードフレームの電気配線パターン上に設けた半導体発光素子を透明樹脂等で全体を円柱や四角柱にし、その上部を円錐状や四角錘状に切除した形状にモールドし、半導体発光素子からの上方に出射する出射光をモールドの円錐や四角錐の面で全反射をして横方向(放射状方向)に光線を偏向させて出射する光源と、中心位置に設けた円形状や四角形状の開口部または裏面の凹部に光源を挿入し、開口部または凹部の周壁面による入射部を中心に入射部方向に向く傾斜部を有した凹形状を設けた導光体とによって、導光体の入射部から進入した光源からの光を凹形状の傾斜部で全反射や The present invention is a ceramic substrate, a liquid crystal polymer resin substrate, a lead frame on consisting substrate or a thin metal plate of glass cloth epoxy resin substrate or the like, or a semiconductor light emitting element provided on the electric wiring pattern of the substrate or a lead frame transparent the total resin in the cylinder or square pole, molded the upper portion excised shape conically or a square pyramid, the total in terms of a cone or pyramid mold outgoing light emitted upward from the semiconductor light emitting element a light source for emitting by deflecting the light beam in the transverse direction (radial direction) by a reflection, to insert the light source into a circular shape and a square shaped opening or the back of the recess formed in the center position, the circumferential openings or recesses total reflection by the concave shape of the provided light guide body having an inclined portion facing the incident section direction around the entrance portion by the wall, the light from entering the light source from the incident part of the light guide in the concave shape of the inclined portion Ya 折等をして導光体の表面部の中心から放射状に出射することができる光源および導光体ならびに平面発光装置を提供することにある。 It is to provide a light source and the light guide member and a plane light emitting device capable of emitting by the folding and the like from the center of the surface portion of the light guide radially.
【0043】 [0043]
図1は本発明に係る平面発光装置の概略構成を示す斜視図、図2乃至図6は本発明に係る光源の各実施の形態を示す図、図7および図8は本発明に係る導光体の実施の形態を示す図、図9は本発明に係る導光体の凹形状における光の軌跡の概略図、図10は本発明に係る導光体の他の実施の形態を示す図、図11は本発明に係る平面発光装置の光の軌跡の概略図、図13は本発明に係る平面発光装置の概略構成を示す図、図14は図13の平面発光装置における右半部の光の軌跡の概略図、図15は本発明に係る平面発光装置の概略構成を示す図、図16は図15の平面発光装置における右半部の光の軌跡の概略図である。 Figure 1 is a perspective view showing a schematic configuration of a planar light-emitting device according to the present invention, shows the respective embodiments of the light source according to FIG. 2 through 6 present invention, FIGS. 7 and 8 the light guide according to the present invention shows an embodiment of a body, Figure 9 is a schematic view of the light trajectory in the recessed light guide according to the present invention, FIG. 10 is a diagram showing another embodiment of a light guide member according to the present invention, Figure 11 is a schematic view of the light trajectory of the plane light emitting device according to the present invention, FIG. 13 showing a schematic configuration of a planar light-emitting device according to the present invention, FIG 14 is light right half portion in the plane light emitting device of FIG. 13 schematic trajectory view of FIG. 15 FIG, 16 illustrating a schematic configuration of a planar light-emitting device according to the present invention is a schematic diagram of the light path of the right half portion in the plane light emitting device of FIG. 15. なお、図1、図7、図8、図10に於いて、凹形状は1本の細線で簡略的に表現している。 1, 7, 8, in FIG. 10, the concave shape are schematically represented by a single thin line.
【0044】 [0044]
本例の平面発光装置1は、図1に示すように、円形の導光体3の中心に開口部21が設けられ、この開口部21に半導体発光素子からの出射方向(垂直)を略並行に放射状に出射する光源22(22A〜22E)が挿入されて概略構成される。 Flat light emitting device 1 of this embodiment, as shown in FIG. 1, an opening 21 is provided in the center of the circular light guide 3, a substantially parallel outgoing direction from the semiconductor light emitting element to the opening 21 (vertical) source 22 (22 a to 22 e) is a schematic constructed is inserted emitted radially. 図11に示すように、開口部21の周壁面は、光源22からの光を導く入射部20を形成している。 As shown in FIG. 11, the peripheral wall surface of the opening 21 forms an incident portion 20 for guiding light from the light source 22. また、表面部31や裏面部32には、開口部21の入射部20を中心として放射状に同心円上に入射部20方向に向く傾斜部を有した凹形状34が形成される。 The surface portion 31 and the rear surface portion 32, concave 34 having an inclined portion facing the incident portion 20 direction concentrically radially around the entrance portion 20 of the opening 21 is formed. なお、開口部21に代えて、導光体3の裏面部32の中心に凹部21を形成しても良い。 Instead of the opening 21 may be formed a recess 21 in the center of the bottom 32 of the light guide 3. この場合、凹部21の周壁面が光源22からの光線を導光体2内に導く入射部20となる。 In this case, the incident portion 20 of the peripheral wall surface of the recess 21 guides the light from the light source 22 into the light guide 2.
【0045】 [0045]
本例の平面発光装置1には、例えば図2乃至図6に示す構成の光源22(22A〜22E)を採用している。 The plane light emitting device 1 of the present embodiment employs, for example, FIG. 2 to the configuration of a light source 22 shown in FIG. 6 (22 a to 22 e). 図2に示すように、光源22は、有機金属気相成長法等で製作された4元素化合物等からなる半導体発光素子2がリードフレーム23や基板23等の基台上の載置面に載置される。 2, the light source 22, the light emitting element 2 consisting of quaternary compounds fabricated by metal organic chemical vapor deposition or the like mounting the mounting surface on the base such as a lead frame 23 and the substrate 23 It is location. そして、半導体発光素子2の光の出射面側が全体が透明樹脂等による円柱形状のモールド24(24A〜24E)で覆われる。 The exit surface of the light from the semiconductor light-emitting element 2 is entirely covered with a mold 24 of a cylindrical shape by a transparent resin (24A to 24E). モールド24は、半導体発光素子2に対向する位置が逆向きの円錐形状25に切除した形状に構成される。 Mold 24 is configured in a shape position is excised reverse conical shape 25 that faces the semiconductor light emitting element 2. また、基台をなすリードフレーム23や基板23等には、半導体発光素子2に駆動電源を供給するためのリード端子26が設けられる。 Further, in the such as a lead frame 23 and the substrate 23 forming the base, the lead terminals 26 for supplying driving power to the semiconductor light emitting element 2 is provided.
【0046】 [0046]
リードフレーム23は、導通性および弾力性のある燐青銅等の銅合金材等で構成される。 The lead frame 23 is composed of a copper alloy such as phosphor bronze or the like with conductivity and elasticity. 図示しないが、リードフレーム23には、電気的接続をするための配線パターンやリード端子26等のパターンがパターンプレスによって形成される。 Although not shown, the lead frame 23, the pattern such as a wiring pattern or the lead terminals 26 for the electrical connection is formed by a pattern press. そして、この薄板のリードフレーム23に対し、樹脂によりインサート成形が施され、モールド24が形成される。 Then, with respect to the lead frame 23 of the sheet, insert molding is performed with a resin molding 24 is formed.
【0047】 [0047]
基板23は、電気絶縁性に優れたセラミック、液晶ポリマー樹脂、ガラス布エポキシ樹脂等で構成される。 Substrate 23, a ceramic excellent in electrical insulating properties, a liquid crystal polymer resin, and a glass fabric epoxy resin or the like. 図示しないが、基板23の表面には、電気的接続をするための配線パターンが形成される。 Although not shown, the surface of the substrate 23, a wiring pattern for electrical connection is formed.
【0048】 [0048]
さらに説明すると、セラミックからなる基板23は、AlOやSiOを主成分とし、さらにZrO,TiO,TiC,SiCおよびSiN等との化合物からなり、耐熱性や硬度、強度に優れ、白色系の表面を持ち、半導体発光素子2からの発光された光を効率良く反射する。 To further illustrate, a substrate 23 made of ceramic is mainly composed of AlO and SiO, further ZrO, TiO, TiC, made of a compound of SiC and SiN or the like, heat resistance and hardness, excellent strength, the surface of the white has a light emitted from the semiconductor light emitting element 2 efficiently reflected.
【0049】 [0049]
また、液晶ポリマー樹脂やガラス布エポキシ樹脂からなる基板23は、液晶ポリマーやガラス布エポキシ樹脂などの絶縁性の有る材料に、チタン酸バリウム等の白色粉体を混入または塗布させて成形し、半導体発光素子2からの発光された光を効率良く反射する。 The substrate 23 made of liquid crystal polymer resin or glass cloth epoxy resin, the material having the insulating property such as a liquid crystal polymer or glass cloth epoxy resin, and molded by mixing or coating a white powder such as barium titanate, semiconductor the light emitted from the light emitting element 2 efficiently reflected.
【0050】 [0050]
なお、基板23としては、珪素樹脂、紙エポキシ樹脂、合成繊維布エポキシ樹脂および紙フェノール樹脂等の積層板や変成ポリイミド、ポリブチレンテレフタレート、ポリカーボネートや芳香族ポリエステル等からなる板にパターン印刷を施して半導体発光素子2からの発光された光を効率良く反射する構成としてもよい。 As the substrate 23, silicon resins, paper epoxy resins, laminates and modified polyimide such as synthetic fiber cloth epoxy resin and paper phenol resin, polybutylene terephthalate is subjected to a pattern printing plate made of polycarbonate and aromatic polyester the light emitted from the semiconductor light emitting element 2 effectively may be configured to reflect.
【0051】 [0051]
また、図示しないパターンは、セラミック基板、液晶ポリマー樹脂基板、ガラス布エポキシ樹脂基板のいずれかの基板23上に真空蒸着スパッタリング、イオンプレーティング、CVD(化学蒸着)、エッチング(ウエット、ドライ)等により電気的接続をするパターン形状に形成される。 The pattern, not shown, a ceramic substrate, a liquid crystal polymer resin substrate, a vacuum deposition sputtered onto one of the substrate 23 of glass cloth epoxy resin substrate, ion plating, CVD (chemical vapor deposition), etching (wet, dry) by such It is formed in a pattern shape that the electrical connection. そして、パターンの上に金属メッキを施した後、さらに金や銀等の貴金属メッキを施し、リード端子26に電気的に接続される。 Then, after performing metal plating on the pattern, further subjected to noble metal plating such as gold or silver, it is electrically connected to the lead terminals 26.
【0052】 [0052]
半導体発光素子2は、4元素化合物やInGaAlP系、InGaAlN系、InGaN系等の化合物の半導体チップ等からなる高輝度発光素子であり、赤色発光、緑色発光、青色発光の単色光である。 The semiconductor light-emitting element 2, 4 element compound or InGaAlP-based, InGaAlN-based, high brightness light emitting device comprising a semiconductor chip or the like of a compound of the InGaN-based, etc., red light emission, green light emission, a monochromatic light of blue emission.
【0053】 [0053]
また、赤色発光、緑色発光、青色発光を一体化して3種の色発光により白色光を可能とし、さらに波長変換材料を用いる構成としてもよい。 The red-emitting, green-emitting, and allows white light with three color emission by integrating blue emission may be configured to use a further wavelength converting material. 例えば、青色発光の半導体発光素子2と、この青色発光の半導体発光素子2によって励起し、黄色発光の波長変換材料(蛍光材)による黄色の発光色と青色の発光色との混合によって白色発光させたものでも良い。 For example, the semiconductor light emitting device 2 of the blue emission, the excited by blue light emission of the semiconductor light-emitting element 2, is a white light by mixing the light emission color and blue emission color of yellow by the wavelength conversion material for yellow light emission (fluorescence material) may be one was.
【0054】 [0054]
さらに、半導体発光素子2は、表面に取り付ける電極をIn 23 ,SnO 2 ,ITO等からなる導電性透明電極等をスパッタリング、真空蒸着、化学蒸着等により生成させて製作する。 Furthermore, the semiconductor light-emitting element 2, the electrode attached to the surface an In 2 O 3, sputtering SnO 2, made of ITO or the like conductive transparent electrode such as vacuum deposition, manufactured by produced by chemical vapor deposition or the like.
【0055】 [0055]
半導体発光素子2は、図示しないが、半導体発光素子2の電極と配線パターンとを金線等の導通線からなるボンディングワイヤでワイヤーボンディングされ、電気的に接続される。 The semiconductor light-emitting element 2, although not shown, the electrode and the wiring pattern of the semiconductor light emitting element 2 are wire-bonded by bonding wires made of conducting line such as gold wires, are electrically connected.
【0056】 [0056]
モールド24(24A〜24E)は、透明性の良い材料、例えば無色透明なエポキシ樹脂やシリコーン樹脂等で形成される。 Mold 24 (24A to 24E), a transparent material having good, for example, formed a colorless transparent epoxy resin or silicone resin. 図2に示すモールド24Aは、全体が円柱形状をなし、半導体発光素子2の対向する位置が逆向きの円錐形状25に切除した形状に構成される。 Mold 24A shown in FIG. 2 is entirely without a cylindrical shape, configured in a shape position is excised reverse conical shape 25 that faces the semiconductor light emitting element 2.
【0057】 [0057]
そして、モールド24Aの円錐形状25の面25a(リードフレーム23や基板23に半導体発光素子2を載置した面に対向する面25a)で半導体発光素子2から出射する光を全反射して、半導体発光素子2を載置面に略並行に放射状に360度の範囲に出射させる。 Then, the totally reflected light emitted from the semiconductor light emitting element 2 in terms 25a of conical shape 25 of the mold 24A (a surface 25a facing the surface of mounting the semiconductor light emitting element 2 to the lead frame 23 and the substrate 23), the semiconductor radially emit in the range of 360 degrees in a substantially parallel to the light emitting element 2 mounting surface.
【0058】 [0058]
図3(a),(b)に示すモールド24Bは、下部が円柱形状をなし、半導体発光素子2の対向する上部位置が円柱形状よりも外側に放射状の曲面27aを有した漏斗形状27をなしており、上部位置が逆向きの円錐形状25に切除した形状に構成される。 Mold 24B shown in FIG. 3 (a), (b), the lower part forms a cylindrical shape, forms a funnel shape 27 the upper position had a radial curved surface 27a outside the cylindrical shape facing the semiconductor light-emitting element 2 and is configured to shape the upper position is excised reverse conical shape 25.
【0059】 [0059]
そして、図3(a),(b)に示した光源22Bのモールド24Bは、半導体発光素子2からの光線を漏斗形状27内に導くとともに、円錐形状25の円錐面25aと放射状の曲面27aとで全反射を繰り返して漏斗形状27の先端27bから水平に円周方向に360度の範囲に指向性を持つ光線を出射する。 The mold 24B of the light source 22B shown in FIG. 3 (a), (b), the light rays from the light emitting element 2 and guides in the funnel-shaped 27, and radially curved surface 27a and the conical surface 25a of the conical 25 in emitting a light beam having a directivity in the range of horizontal 360 degrees in the circumferential direction from the distal end 27b of the funnel-shaped 27 repeats total reflection.
【0060】 [0060]
図4に示す光源22Cは、リードフレーム23や基板23上に載置した矩形状の半導体発光素子2に対応させてモールド24Cが形成される。 Light source 22C shown in FIG. 4, the mold 24C is formed corresponding to the rectangular semiconductor light-emitting element 2 is placed on the lead frame 23 and the substrate 23. さらに説明すると、このモールド24Cは、全体が半導体発光素子2の側面に対応した四角柱形状をなし、半導体発光素子2に対向する位置が逆向きの四角錐形状28に切除され、四角柱の側面と四角錐の底辺とが四角柱の上部4辺28bで接続する形状に構成される。 To further illustrate, the mold 24C is entirely without a square pillar shape corresponding to the side surface of the semiconductor light-emitting element 2, opposite position is cut in the opposite direction of the quadrangular pyramid 28 in the semiconductor light-emitting element 2, the side surface of the square pillar When configured in a shape and pyramid base is connected with the upper four sides 28b of the rectangular prism.
【0061】 [0061]
そして、モールド24Cの四角錐形状28の面28a(リードフレーム23や基板23に半導体発光素子2を載置した面に対向する面28a)で半導体発光素子2から出射する光を全反射して、半導体発光素子2を載置面に略並行に180度の範囲で4方向に出射させる。 Then, the totally reflected light emitted from the semiconductor light emitting element 2 in terms 28a of quadrangular pyramid 28 of the mold 24C (surface 28a facing the surface of mounting the semiconductor light emitting element 2 to the lead frame 23 and the substrate 23), 4 is emitted in the direction in a range of 180 degrees in a substantially parallel to the mounting surface of the semiconductor light-emitting element 2.
【0062】 [0062]
さらに、図5および図6は、光源22に於けるモールド24の変形例を示している。 Further, FIGS. 5 and 6 show a modification of the in mold 24 to the light source 22. 図5(a),(b)に示すモールド24Dは、全体が略円錐形状をなし、半導体発光素子2の対向する位置が逆向きの円錐形状25に切除した形状に構成される。 FIG. 5 (a), the mold 24D shown in (b) is entirely a substantially conical shape, configured in a shape position is excised reverse conical shape 25 that faces the semiconductor light emitting element 2.
【0063】 [0063]
この場合は、円錐形状25の面25aで半導体発光素子2から出射する光を全反射して、半導体発光素子2を載置面に略並行に放射状に出射する。 In this case, the total reflection light emitted from the semiconductor light emitting element 2 in terms 25a of conical shape 25, is emitted radially substantially parallel to the mounting surface of the semiconductor light-emitting element 2. そして、モールド24Dの全体が略円錐形状をしているので、出射光がモールド24Dでやや下方向に傾きを有して放射状に360度の範囲に光線として出射する。 The entire mold 24D because has a substantially conical shape, the outgoing light is emitted as light in the range of 360 ° radially with a slope slightly downwards in the mold 24D.
【0064】 [0064]
同様に、図6(a),(b)に示すモールド24Eは、全体が円柱形状をなし、半導体発光素子2の対向する位置が逆向きの内側に反った曲面25bを有した円錐形状25に切除した形状に構成される。 Similarly, FIG. 6 (a), the mold 24E shown in (b) is entirely without a cylindrical shape, a conical shape 25 that a position opposed to the semiconductor light-emitting element 2 had a curved surface 25b warped to the inside of the opposite configured to cut shape.
【0065】 [0065]
この場合は、円錐形状25の曲面25bで半導体発光素子2から出射する光を全反射する時に、やや下方向に傾きを有して放射状に360度の範囲に光線として出射する。 In this case, when the total reflecting light emitted from the semiconductor light emitting element 2 by a curved surface 25b of the conical 25 and exits as ray in a range of 360 ° radially with a slope slightly downwards.
【0066】 [0066]
ところで、上述したモールド24(24A〜24E)は、全反射させる面(25a,25b,28a)に金等を蒸着したり、光の反射性の良いチタン酸バリウム等を塗布して反射面を形成し、半導体発光素子2からの光を効率良く反射させても良い。 Meanwhile, the mold 24 described above (24A to 24E) is totally reflected by causing the surface (25a, 25b, 28a) or depositing gold or the like, by applying a good barium titanate reflective of light, such as a reflecting surface formed and, light may be efficiently reflects the from the semiconductor light emitting element 2.
【0067】 [0067]
なお、モールド24(24A〜24E)は、透明なアクリルやポリカーボネート等で成形した物を無色透明なエポキシ樹脂等の接着剤で半導体発光素子2を包囲するようにリードフレーム23や基板23に接着しても良い。 Incidentally, the mold 24 (24A to 24E) is a material obtained by molding a transparent acrylic or polycarbonate or the like is bonded to the lead frame 23 and the substrate 23 so as to surround the semiconductor light emitting element 2 with an adhesive such as a colorless transparent epoxy resin and it may be.
【0068】 [0068]
リード端子26は、導通性および弾性力のある燐青銅等の銅合金材等からなるリードフレーム23を直接取り出して形成される。 Lead terminal 26 is formed is taken out the lead frame 23 made of a copper alloy such as phosphor bronze with a conductivity and elasticity directly. また、基板23にリード端子26を設けて配線パターンと電気的に接続するように構成することもできる。 It can also be configured to connect to the substrate 23 provided with the lead terminals 26 to the wiring pattern electrically.
【0069】 [0069]
このように、光源22A,22D,22Eは、半導体発光素子2からの光を円錐面25a,25bで全反射するので、円周方向に半導体発光素子2からの光を大部分出射することができる。 Thus, the light source 22A, 22D, 22E is a conical surface 25a of the light from the semiconductor light-emitting element 2, because the total reflection at 25b, it is possible to light from the semiconductor light emitting element 2 in the circumferential direction largely emitted .
【0070】 [0070]
同様に光源22Bは、半導体発光素子2からの光を円錐面25aと放射状の曲面27aとで全反射を繰り返して、漏斗形状27の先端部27bから円周方向に反射するので、半導体発光素子2からの光を大部分出射することができる。 Similarly the light source 22B is, the light from the semiconductor light emitting element 2 while repeating total reflection at the conical surface 25a and radial curved surface 27a, so that the reflection in the circumferential direction from the distal end 27b of the funnel-shaped 27, the semiconductor light-emitting element 2 the light from can be largely emitted.
【0071】 [0071]
さらに、光源22Cは、半導体発光素子2からの光を四角錐面28aで全反射をして四方向に反射するので、半導体発光素子2からの光を大部分出射することができる。 Further, the light source 22C is so reflected in the four directions of the light from the semiconductor light emitting element 2 by total reflection by a square conical surface 28a, it can be largely emitted light from the semiconductor light emitting element 2.
【0072】 [0072]
なお、平面発光装置1に利用する場合、これら光源22(22A〜22E)の頂部には、平面全体が均一な出射光を必要とするために微量の光の漏れがあっても良い。 Incidentally, when using the plane light emitting device 1, the top of the light sources 22 (22 a to 22 e), there may be leakage of trace amounts of light in the entire plane requires a uniform emitted light.
【0073】 [0073]
導光体3は、屈折率が1.4〜1.7程度の透明なアクリル樹脂(PMMA)やポリカーボネート(PC)等により形成される。 Light guide 3 is formed by such as the refractive index is 1.4 to 1.7 approximately transparent acrylic resin (PMMA) or polycarbonate (PC). 図7(a),(b)に示す導光体3は、外形が円形状に形成されている。 FIG. 7 (a), the light guide 3 shown in (b), the outer shape is formed in a circular shape. この導光体3の中心位置には、光源22Aや22Bを挿入する円形の開口部21または裏面部32に円形の凹部21が設けられる。 The central position of the light guide 3, the circular recess 21 is provided in the circular opening 21 or rear portion 32 for inserting the light source 22A and 22B. 開口部21または凹部21の周壁面は、光源22Aや22Bからの光を導く円形状の入射部20を形成している。 Peripheral wall surface of the opening 21 or the recess 21 forms a circular entrance portion 20 for guiding light from the light source 22A and 22B.
【0074】 [0074]
また、導光体3には、表面部31や裏面部32に入射部(開口部21)を中心として放射状に同心円上に入射部20(開口部21)方向に向く傾斜部33を有した凹形状34(34A)が設けられている。 Further, the light guide 3, having a surface portion 31 and the rear surface portion 32 to the incident portion incident portion 20 concentrically radially around the (opening 21) (opening 21) inclined portion 33 facing in a direction concave shape 34 (34A) is provided.
【0075】 [0075]
即ち、この傾斜部33を有した凹形状34Aは、開口部21を中心に環状の凹形状34Aが同心に多重に導光体3の表面部31や裏面部32に設けた構造である。 In other words, concave 34A having the inclined portion 33 has a structure in which an annular concave 34A around the opening portion 21 is provided on the surface portion 31 and the rear surface portion 32 of the light guide 3 to the multiple concentric.
【0076】 [0076]
なお、図7(a),(b)の例では、裏面部32のみに傾斜部33を有した凹形状34Aを設けている。 Incidentally, FIG. 7 (a), provided concave 34A in the example, which has an inclined portion 33 only on the rear surface portion 32 of (b).
【0077】 [0077]
また、導光体3としては、図8(a),(b)に示す構成を採用しても良い。 As the light guide 3, FIG. 8 (a), the may be adopted as shown in (b). 図8(a),(b)に示す導光体3は、外形が四角形状に形成される。 FIG. 8 (a), the light guide 3 shown in (b), the outer shape is formed in a rectangular shape. この導光体3の中心位置には、光源22Cを挿入する四角形状の開口部21または裏面部32に四角形状の凹部21が設けられる。 The central position of the light guide 3, a square-shaped recess 21 is provided in the rectangular opening 21 or rear portion 32 for inserting the light source 22C. 開口部21または凹部21の周壁面は、光源22Cからの光を導く四角形状の入射部20を形成している。 Peripheral wall surface of the opening 21 or the recess 21 forms a rectangular entrance portion 20 for guiding light from the light source 22C.
【0078】 [0078]
また、導光体3には、表面部31や裏面部32に入射部(開口部21)を中心として平行に入射部20(開口部21)方向に向く傾斜部33を有した凹形状34(34B)が設けられている。 Further, the light guide 3, the surface portion 31 and the entrance portion to the rear surface portion 32 (the opening 21) parallel to the incident portion 20 around the (opening 21) having an inclined portion 33 facing in a direction concave shape 34 ( 34B) is provided.
【0079】 [0079]
即ち、この傾斜部33を有した凹形状34Bは、開口部21からの同距離に設けた入射部20(開口部21)に平行な4つの凹部の端部が接続されたものであり、開口部21を中心に四角の環状が同心に多重に導光体3の表面部31や裏面部32に設けた構造である。 That is, a concave shape 34B having the inclined portion 33, which end of the four recesses parallel to the incident portion 20 provided at the same distance from the opening 21 (opening 21) is connected, the opening an annular square around the part 21 is a structure provided in the surface portion 31 and the rear surface portion 32 of the light guide 3 to the multiple concentric.
【0080】 [0080]
なお、図8(a),(b)の例では、裏面部32のみに傾斜部33を有した凹形状34Bを設けている。 Incidentally, FIG. 8 (a), provided a concave shape 34B in the example, which has an inclined portion 33 only on the rear surface portion 32 of (b). また、凹形状34は、傾斜部(傾斜面)33が入射部20方向に向く形状であれば良い。 Moreover, concave shape 34, the inclined portion (inclined surface) 33 may have any shape that faces the incident portion 20 direction. 例えば図9に示すように、断面形状が二等辺三角形の傾斜部33aや直角三角形の傾斜部33bを傾斜部33として採用することができる。 For example, as shown in FIG. 9, the cross-sectional shape can be adopted an inclined portion 33b of the inclined portion 33a and the right triangle of the isosceles triangle as an inclined portion 33.
【0081】 [0081]
上記のように構成される導光体3は、図9に示すように、開口部21に備えた光源22A〜22Eからの略平行な光線を入射部20から導く。 Configured light guide as described above 3, as shown in FIG. 9, it leads to a substantially parallel light beam from the light source 22A~22E provided in the opening 21 from the incident portion 20. そして、導光体3内に導かれた光線Lは、導光体3の裏面部32に設けた凹形状34(34A,34B)の入射部20方向に向く傾斜部33aで全反射して表面部31の上方へ光線L1を出射する。 The light L that has been guided into the light guide 3, concave shape 34 provided on the rear surface portion 32 of the light guide 3 (34A, 34B) is totally reflected by the inclined portion 33a facing the incident portion 20 direction of the surface above the parts 31 for emitting a light beam L1.
【0082】 [0082]
同様に、導光体3は、図9に示すように、開口部21に備えた光源22A〜22Eからの光線が入射部20から導入されると、導光体3内に導かれた光線Lは、導光体3の表面部31に設けた凹形状34(34A,34B)の入射部20方向に向く傾斜部33bで屈折して表面部31の上方へ光線L2を出射する。 Similarly, the light guide 3, as shown in FIG. 9, the light beam from the light source 22A~22E having the opening 21 is introduced from the incident portion 20, light rays guided into the light guide 3 L emits light L2 above the surface portion 31 is refracted by the inclined portion 33b facing the incident portion 20 direction of the concave 34 provided on the surface portion 31 of the light guide 3 (34A, 34B).
【0083】 [0083]
このように、導光体3は、入射部20方向に向く傾斜部33(33a,33b)によって入射部20から進入した光源22からの光を傾斜部33で全反射や屈折等をして導光体3の表面部31の中心から円周方向や四方向に放射状に表面部31から光線L1やL2を出射することができる。 Thus, the light guide 3, the inclined portion 33 (33a, 33b) facing the incident portion 20 direction by total reflection and refraction, etc. of light from the light source 22 that enters the inclined portion 33 from the incident portion 20 by guide it can emit light L1 and L2 from the surface portion 31 radially in the circumferential direction and four directions from the center of the surface portion 31 of the optical member 3.
【0084】 [0084]
なお、凹形状34の形状は、出射角を決定するような形状を選択すれば、表面部31から出射する出射光の目的等に合わせることができる。 The shape of the concave 34, by selecting the shape to determine the exit angle, can be adapted to the purpose and the like of the emitted light emitted from the surface portion 31. また、凹形状34は、入射部20方向に向く傾斜部33を有する形状ならどんな形状でも良い。 Moreover, concave shape 34 may be any shape if the shape having the inclined portion 33 facing the incident portion 20 direction.
【0085】 [0085]
例えば図9に示すように、断面形状が二等辺三角形や直角三角形の他、逆三角、矩形、円弧等で、連続な溝やドット等の形状およびサイズを自由に選択することができる。 For example, as shown in FIG. 9, another cross-sectional shape of an isosceles triangle and right triangle, inverted triangle, rectangle, a circular arc or the like, it is possible to freely select the shape and size of such continuous grooves or dots.
【0086】 [0086]
また、図10(a)〜(d)に示すように、導光体3の中心位置に光源22Aや22Bを挿入する円形の開口部21または裏面部32に円形の凹部21を設け、入射部20方向に向く傾斜部33を有する凹形状34を備えた各種の形状を採用することができる。 Further, as shown in FIG. 10 (a) ~ (d), a circular recess 21 provided in the circular opening 21 or rear portion 32 for inserting the light source 22A and 22B to the center position of the light guide 3, the incident portion it is possible to use various shapes having a concave shape 34 having an inclined portion 33 facing 20 direction. 例えば図10(a)や図10(b)の様な形状の導光体3を採用した場合、開口部21または裏面部32に円形の凹部21に橙色等の光源22Aや22Bを挿入し、導光体3を回転を可能にする。 For example, FIG. 10 (a) and FIG. 10 the case of adopting the light guide 3 in such shape (b), by inserting the light source 22A and 22B of the orange or the like in a circular recess 21 in the opening 21 or rear portion 32, the light guide 3 to allow rotation. これにより、道路交通のガードレール等に用いられる注意表示器をもっと明るく自発光により自動車の運転者に知らせることが可能である。 Thus, it is possible to inform the driver of the motor vehicle by brighter self-luminous attention indicator for use in road traffic guardrail like.
【0087】 [0087]
また、導光体3を図10(c)や図10(d)に示す形状とし、ディスプレイ単体として、光源22Aや22Bの発光色をカラフルにすることにより利用することが可能である。 Further, the light guide 3 to the shape shown in FIG. 10 (c) and FIG. 10 (d), the as display alone can be utilized by the color of light emitted by the light source 22A and 22B colorful.
【0088】 [0088]
平面発光装置1は、図11に示すように、光源22(22A,22B,22D,22Eの何れか)と、円形の導光体3Aとを備えて概略構成される。 Flat light emitting device 1, as shown in FIG. 11, the light source 22 and (22A, 22B, 22D, any one of 22E), schematically constituted by a circular light guide 3A. この場合の光源22は、前述したように、リードフレーム23や基板23上の載置面に載置した半導体発光素子2からの光の出射方向に透明樹脂等で半導体発光素子2の載置面の対向方向に出射する光を半導体発光素子2の対向する面25a,25bで全反射を行い、載置面に略並行に放射状に出射するようにモールドしたものである。 Light source 22 in this case, as described above, the mounting of the semiconductor light emitting element 2 with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element 2 which is mounted on the mounting surface of the lead frame 23 and the substrate 23 surface opposing surfaces 25a of the light emitted in the opposite direction the semiconductor light-emitting element 2 of the perform total reflection at 25b, is obtained by molding so as to emit radially substantially parallel to the mounting surface. 導光体3Aは、光源22(22A,22B,22D,22Eの何れか)からの光を導く入射部20が中心に位置し、光源22(22A,22B,22D,22Eの何れか)を挿入する開口部21または裏面部32に凹部21を有している。 Light guide 3A, the light source 22 incident portion 20 for guiding light from (22A, 22B, 22D, either 22E) is located in the center, insert a light source 22 (22A, 22B, 22D, either 22E) It has a recess 21 in the opening 21 or rear portion 32. また、導光体3は、入射部20を中心として放射状に同心円上に入射部20方向に向く傾斜部33を有した凹形状34Aが表面部31や裏面部32に設けられている。 Further, the light guide 3 is concave 34A having an inclined portion 33 facing the incident portion 20 direction concentrically radially around the entrance portion 20 is provided in a surface portion 31 and the rear surface portion 32.
【0089】 [0089]
そして、上記構成による平面発光装置1では、光源22(22A,22B,22D,22Eの何れか)から円周方向な放射状に出射した光線Lを凹形状34の傾斜部33で全反射や屈折等をして導光体3の表面部31から光線L1,L2を出射する。 Then, the planar light-emitting device 1 having the above arrangement, the light source 22 total reflection and refraction etc. The light L emitted in the circumferential direction radially from (22A, 22B, 22D, either 22E) at the inclined portion 33 of the concave 34 the emitted light rays L1, L2 from the surface portion 31 of the light guide 3.
【0090】 [0090]
よって、半導体発光素子2からの出射光L1,L2を効率良く導光体3の表面部31から出射でき、どの位置でも高輝度で斑の無い平面発光を得ることができる。 Therefore, the outgoing light L1, L2 from the light emitting element 2 can exit from the surface portion 31 of the efficient light guide 3, it is possible to obtain a plane light emission without spots even in a high luminance at any position.
【0091】 [0091]
また、平面発光装置1としては、別の構成も考えられる。 As the planar light emitting device 1, other configurations are also contemplated. この場合の光源22Cは、前述したように、リードフレーム23や基板23上の載置面に載置した矩形状の半導体発光素子2からの光の出射方向に透明樹脂等で半導体発光素子2の側面に対応した四角柱形状を成し、半導体発光素子2に対向する位置が逆向きの四角錐形状28に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドしたものである。 Light source 22C in this case, as described above, the semiconductor light emitting element 2 with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light-emitting element 2 mounted on the mounting surface on the lead frame 23 and the substrate 23 forms a square pillar shape corresponding to the side surface, a position facing the semiconductor light emitting element 2 is cut in the opposite direction of the quadrangular pyramid 28, in which the bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected is there. 導光体3Bは、光源22Cからの光を導く入射部20が中心に位置し、光源22Cを挿入する四角形状の開口部21または裏面部32に四角形状の凹部21が設けられる。 Light guide 3B, the incident portion 20 for guiding light from the light source 22C is located in the center, a square-shaped recess 21 is provided in the rectangular opening 21 or rear portion 32 for inserting the light source 22C. また、導光体3Bは、入射部20を中心として平行に入射部20方向に向く傾斜部33を有した凹形状34Bが表面部31や裏面部32に設けられる。 Further, the light guide 3B is concave 34B having an inclined portion 33 facing incident parallel to section 20 direction around the entrance portion 20 is provided on the surface portion 31 and the rear surface portion 32.
【0092】 [0092]
そして、上記構成による平面発光装置1の場合も同様に、光源22Cから開口部21または裏面部32の凹部21に平行に出射した光線Lを凹形状34Bの傾斜部33で全反射や屈折等をして導光体3の表面部31から光線L1,L2を出射する。 Then, similarly in the case of the planar light-emitting device 1 having the above arrangement, total reflection and refraction etc. The light L that is parallel to the exit to the recess 21 of the opening 21 or rear portion 32 from the light source 22C in the inclined portion 33 of the concave shape 34B emitting a light beam L1, L2 from the surface portion 31 of the light guide 3.
【0093】 [0093]
よって、半導体発光素子2からの出射光L1,L2を効率良く導光体3の四方の表面部31から出射でき、どの位置でも高輝度で斑の無い平面発光を得ることができる。 Therefore, the outgoing light L1, L2 from the light emitting element 2 can exit efficiently from all sides of the surface portion 31 of the light guide 3, it is possible to obtain a plane light emission without spots even in a high luminance at any position.
【0094】 [0094]
また、平面発光装置1は、光源22(22A,22B,22C,22D,22E)に載置する半導体発光素子2の出射光を赤色発光または緑色発光または青色発光の単色光を各々3つの導光体3の開口部21または裏面部32の凹部21に各々挿入し、各導光体3の表面部31から赤色光、緑色光、青色光の各々を出射する3つの導光体3を重ね合わせた構成とすることができる。 The planar light-emitting device 1 includes a light source 22 (22A, 22B, 22C, 22D, 22E) the output light of the semiconductor light emitting element 2 is placed on the red-emitting or green-emitting or each three light monochromatic light of blue emission respectively inserted into the recess 21 of the opening 21 or rear portion 32 of the body 3, superimposed red light from the surface portion 31 of the respective light guide bodies 3, green light, three light guide 3 for emitting each of blue light and it can be configured. この他、導光体3をモザイクに並べ、光源22を制御することにより、出射光をフルカラで表せることができる。 In addition, arranging the light guide 3 in a mosaic, by controlling the light source 22 can be represented emitted light in full color. しかも、光源22の赤色光、緑色光、青色光を同時に出射することにより、白色光を得ることができる。 Moreover, the red light source 22, the green light, by emitting blue light at the same time, it is possible to obtain white light. 例えば、交通信号や自動車のテールランプの様な単色利用やモザイク状に並べることによって大型のフルカラ画面を再現することができる。 For example, it is possible to reproduce the large full color screen by arranging the traffic signal and automobile of a single color use and mosaic-like, such as a tail lamp.
【0095】 [0095]
なお、ここでは図示しないが、導光体3からの微小の漏れ光や、反射効率を良くするために導光体3の裏面部32の下側近傍に反射体を別途設けても良い。 Here, although not shown, and leakage light minute from the light guide 3, it may be separately provided lower near the reflector of the rear surface portion 32 of the light guide 3 in order to improve the reflection efficiency.
この場合の反射体は、熱可塑性樹脂に例えば酸化チタンのような白色材料を混入したシートや熱可塑性樹脂のシートにアルミニウム等の金属蒸着を施したり、金属箔を積層した物やシート状金属で構成される。 Reflector in this case, or subjected to a metal deposition such as aluminum sheet and the thermoplastic resin white material is mixed, such as titanium oxide in the thermoplastic resin sheet, in and sheet metal material formed by laminating a metal foil constructed.
【0096】 [0096]
先に説明したように、導光体の屈折率はn=1.49程度であるので、導光体の入射部で屈折する屈折角γはγ=0〜±42°程度の範囲内になる。 As described above, since the refractive index of the light guide is approximately n = 1.49, the refraction angle gamma refracted at the incident portion of the light guide becomes in the range of about γ = 0~ ± 42 ° . また、屈折角γ=0〜±42°の範囲内で導光体内に入射した光は、導光体と空気層(屈折率n=1)との境界面で臨界角αがα=42°程度になる。 Moreover, light incident on the light guide body within the range of the refractive angle γ = 0~ ± 42 ° is the light guide and the critical angle alpha is alpha = 42 ° at the boundary surface of an air layer (refractive index n = 1) It becomes degree. したがって、導光体の表面部や裏面部に光線を偏向する凸や凹等がない場合や臨界角αを越えなければ、導光体内の光は表面部や裏面部で全て全反射しながら入射部の反対方向の反入射部35方向へ進むことになる。 Therefore, if exceeded or if the critical angle α is no convex or 凹等 for deflecting the light beam in the surface portion and the back surface of the light guide, the light of the light guide body while totally reflected all by the surface portion and the back surface incident and the flow proceeds to counter the incident portion 35 a direction opposite the direction of the parts.
【0097】 [0097]
図13は本発明に係る平面発光装置の他の構成例を示している。 Figure 13 shows another configuration example of the planar light-emitting device according to the present invention. 図13に示す平面発光装置1は、上述した構成の光源22と、光源22からの光を導く入射部20bを中心に位置し、光源22を挿入する挿入部としての開口部21または裏面部32に凹部21を設け、入射部20bから遠ざかるに従って厚さが厚くなる楔形状の導光体3と、光を反射する反射体60からなる。 Flat light emitting device 1 shown in FIG. 13 includes a light source 22 of the structure described above, located in the center of the incident portion 20b for guiding light from the light source 22, the opening 21 or rear portion 32 of the insertion portion for inserting the light source 22 the recess 21 is provided, the light guide 3 of wedge-shaped thickness becomes thicker as the distance from the incident portion 20b, a reflecting member 60 that reflects light in. なお、光源22が挿入される開口部21または裏面部32の凹部21は、使用される光源22の外形に合わせた形状とされる。 Incidentally, the concave portion 21 of the opening 21 or rear portion 32 the light source 22 is inserted is shaped to match the outer shape of the light source 22 used.
【0098】 [0098]
ここで、入射部20bから遠ざかるに従って厚さが厚くなる楔形状の導光体3での光の軌跡について図14を参照しながら説明する。 Here, the trajectory of light in the light guide member 3 of a wedge shape becomes thick thickness with reference to FIG. 14 will be described as the distance from the incident portion 20b.
入射部20bから入射した光は、屈折角γ=0〜±42°の範囲内で導光体3内に入射し、光偏向素子34が存在しなければ、楔形状であっても光がリークすることなく反入射部35にまで達する。 Light incident from the incident part 20b is incident on the light guide body 3 within the range of the refractive angle γ = 0~ ± 42 °, if the light deflector 34 is present, even wedge-shaped light leakage it reaches the anti incident portion 35 without.
しかし、反入射部35まで達した光は、反射体60によって反射され、光線Lrとして再度入射部20b方向に進みながら表面部31や裏面部32で全反射を繰り返し、幾度かの表面部31や裏面部32に対しての入射角が導光体3のテーパ角によって臨界角αを破り表面部31から出射角の大きな出射光LLを出射する。 However, the light reaches the anti-incident portion 35 is reflected by the reflector 60, repeating total reflection surface portion 31 and the rear surface portion 32 while proceeds again to the incident portion 20b direction as ray Lr, Ya several times of the surface portion 31 It emits large outgoing light LL output angle from the surface portion 31 breaks the critical angle α by the tapered angle of the incident angle of the light guide 3 of the rear surface portion 32.
【0099】 [0099]
以上のように、本例では、入射部20bから遠ざかるに従って厚さが厚くなる楔形状の導光体3により入射部20b(光源22)方向にテーパーリークを利用している。 As described above, in this embodiment, utilizes a tapered leak incident portion 20b (light source 22) direction by the light guide member 3 of a wedge-shaped thickness becomes thicker as the distance from the incident portion 20b. これにより、一般のような入射部から遠ざかるに従って厚さが薄くなる楔形状の導光体では、入射部から離れるように広がって出射してしまうため、平面発光装置の正面からの観測では輝度の低下として認識されてしまうが、本発明の導光体3や平面発光装置1では、入射部20bに向かって出射するため、平面発光装置1の正面からの観測では輝度の向上として認識される。 Thus, in the light guide of a wedge-shaped thickness becomes thinner as the distance from the incident portion, such as general, since thus emitted spread away from the incident portion, the luminance in the observation from the front of the flat light emitting device While thus being recognized as a decrease, in the light guide member 3 and the planar light emitting device 1 of the present invention, since the emitted toward the incident portion 20b, the observation from the front of the flat light emitting device 1 is recognized as improving the luminance.
【0100】 [0100]
なお、ここでは図示しないが、このような出射角の大きな出射光を効率良く利用するために導光体3の上部に頂角が導光体3に向くようにプリズムシート等を用いることができる。 Incidentally, although not shown here, it can be used such exit angle larger emitted light efficiently apex angle at the top of the light guide 3 in order to use it like a prism sheet so as to face the light guide 3 . この場合、出射光をプリズムの一側面からプリズム内に導き、さらに他のプリズムの一側面で全反射をして、略垂直に上方に出射することができる。 In this case, lead the light emitted from one side of the prism in the prism can be further by total reflection on one side of the other prism and emitted upward substantially perpendicularly.
【0101】 [0101]
また、導光体3の表面部31や裏面部32に光偏向素子34を設ける構成としても良い。 Further, it may be configured on the surface portion 31 and the rear surface portion 32 of the light guide 3 is provided an optical deflection element 34.
なお、光偏向素子34は、表面部31および裏面部32に対して球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四柱柱、円柱等から成る形状を垂直に設けたり、三角柱、四角柱、半円柱等から成る形状を水平に設ける。 The optical deflection element 34, a portion of a sphere and ellipsoid with respect to the surface portion 31 and the rear surface portion 32 and a triangular pyramid, a cone, quadrangular pyramid, a triangular prism, or provided four-poster pillar, a shape composed of a cylindrical or the like vertically, triangular prism, quadrangular prism, a shape composed of a semi-cylindrical or the like horizontally provided.
また、これら球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四角柱、円柱等をランダムおよび直線状や曲線状ならびに任意の分布で表面部31および裏面部32に対して垂直に設けたり、三角柱、四角柱、半円柱等を直線や曲線に任意の分布で表面部31および裏面部32に対して水平に設ける。 Further, some of these balls and ellipsoid, as well as a triangular pyramid, a cone, quadrangular pyramid, triangular prism, quadrangular prism, perpendicular to the surface portion 31 and the rear surface portion 32 of the cylinder or the like in a random and straight or curved and any distribution the provided or, triangular prism, quadrangular prism, provided horizontally with respect to the surface portion 31 and the rear surface portion 32 of the semi-cylindrical, etc. in any distribution lines and curves.
【0102】 [0102]
光偏向素子34を設けることで、導光体3の楔形状により反入射部35まで達した光が反射体60によって反射された臨界角ぎりぎりの光を屈折させて出射することができる。 By providing an optical deflection element 34, it can be light reaches anti incident portion 35 by the wedge shape of the light guide 3 is emitted by refracting the critical angle marginal light reflected by the reflector 60. また、全反射をして反対側に光を偏向しで反対側から出射することができる。 Further, it is possible to emit from the opposite side to deflect light to the opposite side to the total reflection. さらに、光偏向素子34の分布によって出射量や出射させる位置をコントロールすることができる。 Furthermore, it is possible to control the position for extraction intensity and emission by the distribution of the light deflector 34.
【0103】 [0103]
図15は本発明に係る平面発光装置の更に他の構成例を示している。 Figure 15 shows yet another configuration example of the planar light-emitting device according to the present invention. 図15に示す平面発光装置1は、上述した構成の光源22と、光源22からの光を導く入射部20bを中心に位置し、光源22を挿入する挿入部としての開口部21を設け、入射部20bから遠ざかるに従って厚さが厚くなる楔形状の導光体3と、同様に光源22からの光を導く入射部20bを中心に位置し、光源22を挿入する挿入部としての裏面部32に凹部21を設け、入射部20から遠ざかるに従って厚さが薄くなる(入射部20に近づく従って厚さが厚くなる)楔形状の導光体3とを互いに傾斜する面31,32を向かい合わせにし、光源22を開口部21および裏面部32の凹部21に挿入し、最終裏面部32と入射部以外の側面部35,36(反入射部35,36)とを覆う反射体60からなる。 Flat light emitting device 1 shown in FIG. 15, provided with a light source 22 of the structure described above, located in the center of the incident portion 20b for guiding light from the light source 22, the opening 21 of the insertion portion for inserting the light source 22, incident a light guide member 3 of a wedge-shaped thickness becomes thicker as the distance from the part 20b, situated in the center of the entrance portion 20b for guiding light from Similarly the light source 22, the rear surface portion 32 of the insertion portion for inserting the light source 22 the recess 21 is provided, the thickness is reduced (approaching the entrance portion 20 therefore thickness is increased) as the distance from the incident portion 20 and the facing surfaces 31 and 32 inclined and the light guide body 3 of wedge shapes, the light source 22 is inserted into the recess 21 of the opening 21 and the rear surface portion 32, a reflecting member 60 covering the final back surface 32 side portions 35 and 36 other than the entrance portion and the (anti-incident part 35, 36). なお、光源22が挿入される開口部21または裏面部32の凹部21は、使用される光源22の外形に合わせた形状とされる。 Incidentally, the concave portion 21 of the opening 21 or rear portion 32 the light source 22 is inserted is shaped to match the outer shape of the light source 22 used.
【0104】 [0104]
ここで、入射部20bから遠ざかるに従って厚さが厚くなる楔形状の導光体3を下方に配置し、入射部20から遠ざかるに従って厚さが薄くなる楔形状の導光体3を上方に配置して重ね合わせた場合の光の軌跡について図16を参照しながら説明する。 Here, the light guide member 3 of a wedge-shaped thickness becomes thicker as the distance from the incident portion 20b disposed below the light guide member 3 of a wedge-shaped thickness becomes thinner as the distance from the incident portion 20 is disposed above It will now be described with reference to FIG. 16 for the trajectory of the light when the superimposed Te.
【0105】 [0105]
下方にある入射部20bから遠ざかるに従って厚さが厚くなる導光体3の光の軌跡については図14で説明したのでここでは省略する。 Since the trajectory of the light of the light guide 3 having a thickness becomes thicker as the distance from the incident portion 20b located below described in FIG. 14 will be omitted here.
また、入射部20から遠ざかるに従って厚さが薄くなる楔形状の導光体3は、テーパー形状であるために、屈折角γ=±42°に近い光が導光体3の傾斜角度とによって臨界角を破り入射部20から離れるように出射する。 Further, the light guide 3 of wedge-shaped thickness becomes thinner as the distance from the incident portion 20, the critical because of the tapered shape, the light close to the refraction angle gamma = ± 42 ° by the angle of inclination of the light guide 3 emitted away from the incident portion 20 breaks the corners.
【0106】 [0106]
以上に様に、テーパーリークの利用のみの説明であるが、光偏向素子34を設けることによってより効果的な出射光が得られる点ついて説明する。 As the above, a description of only the use of tapered leak, will be explained in more points effectively emitted light can be obtained by providing a light deflector 34.
下部方向にある導光体3は、反入射部35まで達した光が反射体60によって反射され、入射部20b方向に進む時、一部はテーパーリークによって表面部31bから光線LLを出射し、この光線LLが上部にある導光体3の裏面部32に設けた光偏向素子34に達する。 Light guide 3 at the bottom direction, the light reaches the anti-incident portion 35 is reflected by the reflector 60, when proceeding to the incident portion 20b direction, some of the light rays LL emitted from the surface portion 31b by tapered leak, the beam LL reach the light deflector 34 provided on the rear surface portion 32 of the light guide 3 at the top. 例えば光偏向素子34がプリズム形状をなす場合、一度光線LLはプリズムの一側面からプリズム内に進入し、プリズムの他の側面で全反射をして、略垂直に導光体3を透過して表面部31から光線L1を出射する。 For example, when the light deflector 34 forms a prism shape, once light LL enters from one side of the prism in the prism, and the total reflection at the other side surface of the prism passes through the light guide 3 substantially vertically from the surface 31 for emitting a light beam L1.
【0107】 [0107]
また、導光体3の反入射部35まで達して反射体60により反射され、入射部20b方向に進んだ光線Lrは、裏面部32bに設けた光偏向素子34によって全反射する。 Further, reflected by the reflecting member 60 reaches the anti-incident portion 35 of the light guide 3, light Lr proceeding to the incident portion 20b direction is totally reflected by the light deflecting device 34 provided on the rear surface portion 32b. この全反射した光線L10は、表面部31b方向に進み、表面部31bから出射して、上部の導光体3の裏面部32から導光体3内に進み、この導光体3を透過して表面部31から光線L1を出射する。 Ray L10 that this total reflection, the process proceeds to the surface portion 31b direction, and emitted from the surface portion 31b, the process proceeds from the rear surface portion 32 of the upper portion of the light guide 3 in the light guide body 3, transmitted through the light guide 3 emitting a light beam L1 from the surface portion 31 Te.
【0108】 [0108]
さらに、ここでは図示しないが裏面部32bから出射したリーク光等は、裏面部32bの下方に設けた反射体60によって反射され再度導光体3内に光を戻す。 Furthermore, where the leakage light, etc. Although not shown emitted from the rear surface portion 32b is, return the light to the reflected again the light guide body 3 by the reflector 60 provided below the rear surface portion 32b.
【0109】 [0109]
また、上部方向にある導光体3は、入射部20からの光の内、屈折角γ=±42°に近い臨界角ぎりぎりの光を光偏向素子34で屈折し、表面部31から光線L2を出射する。 Further, the light guide 3 at the top direction, among the light from the incident portion 20, and refracted critical angle marginal light close to the refraction angle gamma = ± 42 ° by the light deflector 34, light from the surface portion 31 L2 the emitted.
さらに、導光板3内に閉じ込められ、反入射部36方向に進み反射体60によって反射され再び入射部20方向に進む時にも光偏向素子34で屈折して表面部31から光線を出射することができる。 Further, trapped in the light guide plate 3, it emits light from the surface portion 31 is refracted by the light deflection element 34 when traveling to the incident portion 20 direction is reflected again by the reflector 60 advances the counter-incidence part 36 direction it can.
【0110】 [0110]
なお、ここでは、光偏向素子34をプリズムで説明したが、形状はどんなものでも良く、光に対して傾斜面を有すれば良い。 Here, although the light deflector 34 described prism shape may also anything, it you have an inclined surface to light.
【0111】 [0111]
このように、平面発光装置1は光源22からの光を入射部20と入射部20bから導光体3内に光を導き、1つの導光体3によって導光体3内に進んだ光を反射体60によって入射部20b方向に反射した光を光偏向素子34やテーパーリークにより入射部30b方向に出射する出射光と、他の導光体3内に進んだ光を光偏向素子34やテーパーリークにより反入射部36方向に出射する出射光とによって嗜好性の異なる2つの出射光を出射することができる。 Thus, the planar light-emitting device 1 guides light from the incident portion 20 incident portion 20b on the light guide body 3 light from the light source 22, the light traveling in one of the light guide light guide body 3 by 3 an emission light emitted to the incident portion 30b direction by the light deflector 34 and tapered leakage light reflected on the incident portion 20b direction by the reflector 60, the light deflector 34 and taper the light traveling in the other of the light guide 3 it can emit two output light of different palatability by the outgoing light emitted in the counter-incident portion 36 direction by leaks.
【0112】 [0112]
【発明の効果】 【Effect of the invention】
以上のように、請求項1に係る光源は、モールドが、下部が円柱形状を成し、半導体発光素子に対向する上部位置が円柱形状よりも外側に放射状の曲線を有した漏斗形状であるとともに上部位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面と放射状の曲線の曲面とで全反射を繰り返して漏斗形状の先端から水平に円周方向に放射状に出射するので、 円錐形状の面と放射状の曲面とで全反射を繰り返し、漏斗形状の先端部から円周方向(360度の範囲を出射する)に半導体発光素子からの光を大部分出射することができる。 As described above, light source according to claim 1, mold, bottom forms a cylindrical shape, with an upper position facing the semiconductor light emitting element is a funnel-shaped having a radially curved outwardly from cylindrical shaped upper position is excised conically in the opposite direction, because the radially emitted horizontally in the circumferential direction from the tip of the funnel-shaped repeats total reflection at the curved surface of the conical surface and the radial curve of the conical , repeating total reflection between the surface and the radial curved conical, light from the semiconductor light emitting element (emitting a range of 360 degrees) circumferentially from the tip of the funnel-shaped can be largely emitted. これにより、光エネルギの大部分を円周方向に偏向することができる。 This makes it possible to deflect most of the light energy in the circumferential direction.
【0113】 [0113]
また、請求項2に係る光源は、モールドが、全体が略円錐形状を成し、半導体発光素子に対向する位置が逆向きの円錐形状に切除した形状を有し、円錐形状の円錐面で全反射をし、やや下方向に傾きを有して放射状に出射するので、円錐面で全反射をして円周方向(360度の範囲を出射する)に半導体発光素子からの光を大部分出射することができる。 The light source according to claim 2, mold, entirely a substantially conical shape, opposing positions has a shape formed by cutting a conical shape opposite to the semiconductor light-emitting device, all in the conical surface of the conical the reflected, since the radially emitted with a slope slightly downward (emits a range of 360 degrees) circumferentially by total reflection at the conical surface most outgoing light from the semiconductor light emitting element can do. これにより、光エネルギの大部分を偏向することができる。 This makes it possible to deflect most of the light energy.
【0116】 [0116]
さらに、請求項に係る光源は、半導体発光素子を赤色発光または緑色発光または青色発光の単色光あるいは赤色発光、緑色発光、青色発光を一体にしたので、単色光や白色光を得ることができる。 Further, light source according to claim 3, monochromatic light or red light the semiconductor light-emitting element red emitting or green-emitting or blue-emitting, green-emitting, since the blue light together, it is possible to obtain a monochromatic light or white light . その結果、自由な発光色を再現することができる。 As a result, it is possible to reproduce the free emission colors.
【0117】 [0117]
また、請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部または/および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けたので、入射部から進入した光源からの光を傾斜部で全反射や屈折等をして導光体の表面部の中心から円周方向(360度の範囲)に放射状に出射することができる。 Further, the light guide body according to claim 4, about the incident portion in a surface portion and / or back surface with incidence portion located in the center of the light guide body is provided with a recess in the opening or the back portion to insert the light source radially it is provided with the concave shape having an inclined portion facing the incident portion direction concentrically as the surface portion of the total reflection and refraction etc. to light guide light from the light source entering from the incident portion is inclined portion from the center it can be emitted radially in the circumferential direction (360 ° range) of. これにより、高輝度で斑の無い出射光を得ることができる。 This makes it possible to obtain a free outgoing light mottled with high luminance.
【0118】 [0118]
さらに、請求項に係る導光体は、入射部が導光体の中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けたので、入射部から進入した光源からの光を傾斜部で全反射や屈折等をして導光体の表面部の中心から四方向(180度の範囲で四方向)に放射状に出射することができる。 Further, the light guide according to claim 5 is located in the center of the entrance portion light guide, the surface portion and / or back surface provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source It is provided with the concave shape having an inclined portion facing parallel to the incident portion direction about the incident portion in part, total reflection and refraction etc. to guide the light at the inclined portion of the light from the light source entering from the incident portion from the center it can be emitted radially (four directions in a range of 180 degrees) four directions of the surface portion. その結果、高輝度で斑の無い出射光を得ることができる。 As a result, it is possible to obtain a free outgoing light mottled with high luminance.
【0119】 [0119]
また、請求項に係る導光体は、入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であるので、導光体が入射部から遠ざかるに従って導光体の厚さが厚くなる場合には、入射部から進入した光はすぐには導光体内から出られず、入射部の反対方向に進み、ここで反射されて入射部方向に向かう時にテーパーリークにより出射する、また導光体の厚さが一定である場合には、テーパ−リークにより出射する事無く光偏向素子によって屈折や全反射を起し出射する。 Further, the light guide body according to claim 6, since also the thickness is increased as the distance from the incident portion is constant thickness, the light guide thickness of the light guide increases with the increasing distance from the entrance portion in this case, light which has entered from the incident portion is not get out of the light guide body immediately proceeds to the opposite direction of the incident portion, and emits the taper leakage when directed where it is reflected to the incident portion direction, or guide when the thickness of the optical body is constant, it tapered - leak by emitting cause refraction and total reflection by the light deflecting element without emitting. これにより、目的とする出射方向に対応した出射光を得ることができる。 Thus, it is possible to obtain the emission light corresponding to the emission direction of interest.
【0120】 [0120]
さらに、請求項に係る導光体は、表面部および裏面部に対して球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四角柱、円柱等から成る形状を垂直にまたは三角柱、四角柱、半円柱等から成る形状を水平にランダムおよび直線状や曲線状ならびに任意の分布で光偏向素子を設けるので、屈折させて外部に出射したり、一度屈折してから全反射して再度導光体に戻したり、全反射して反対側から出射したり全反射して再度導光体に戻すことができる。 Further, the light guide according to claim 7, the surface portion and part as well as a triangular pyramid sphere and ellipsoid with respect to the rear surface portion, conical, quadrangular pyramid, triangular prism, quadrangular prism, or a shape consisting of a cylinder or the like perpendicularly triangular prism, quadrangular prism, since a shape composed of a semi-cylindrical or the like horizontally providing a light deflecting element in a random and straight or curved and any distribution, or emitted outside by refracting, is totally reflected from the refracted once and back again to the light guide Te, it can be returned to the totally reflected again lightguide or emitted from the opposite side is totally reflected. これにより、光の進ませる方向を目的通りに制御することができる。 This makes it possible to control the direction to advance the light as intended.
【0121】 [0121]
また、請求項に係る平面発光装置は、リードフレームや基板上の載置面に半導体発光素子が載置され、半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い、載置面に略並行に放射状に出射するように半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに表面部および裏面部に入射部を中心として放射状に同心円上に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向な放射状に出射した光線を傾斜部で全反射または/および屈折して導光体の表面部から出射するので、半導体発光 The planar light-emitting device according to claim 8, the semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, opposing the semiconductor light emitting element light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element perform total reflection surfaces provided at a position, guides a light source molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element to emit radially substantially parallel to the mounting surface, the light from the light source incidence portion located in the center, having an inclined portion facing the incident portion direction concentrically radially around the entrance portion in the surface portion All and back surface provided with a recess in the opening or the rear surface portion for inserting the light source concave and a light guide having a shape, inserting the light source into the recess of the opening or the back portion, the total reflection and / or refraction to the light guide a light beam emitted in the circumferential direction radially from the light source by the inclined portion since emitted from the surface portion, a semiconductor light emitting 子からの出射光を効率良く導光体の表面部から出射でき、どの位置でも高輝度で斑の無い平面発光を得ることができる。 The light emitted from the child can exit efficiently from the surface portion of the light guide, it is possible to obtain a plane light emission without spots even in a high luminance at any position. このため、自由な色の出射光を高輝度で斑の無い出射光が得ることができるとともに薄く広い面積を得ることができ、交通信号や自動車等およびディスプレイ等に利用するのに最適な形状をしている。 Therefore, it is possible to obtain a large area thin it is possible to not emit light levelness obtain light emitted free color with high luminance, the optimum shape for use in traffic lights and automobile or the like and displays, etc. doing.
【0122】 [0122]
さらにまた、請求項に係る平面発光装置は、リードフレームや基板上の載置面に矩形状の半導体発光素子が載置され、半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状に半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、光源からの光を導く入射部が中心に位置し、光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに表面部または/および裏面部に入射部を中心として平行に入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行(180度の範囲で四方)に出射した光線 Furthermore, the planar light-emitting device according to claim 9, rectangular semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, it forms a square pillar shape corresponding to the side surface of the semiconductor light emitting element, a semiconductor position facing the light emitting element is cut into a quadrangular pyramid shape in the opposite direction, a light source and a bottom side and a quadrangular pyramid square pillar is molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element in a shape to be connected , incident portion for guiding light from the light source is located in the center, in parallel around the incident portion in a surface portion and / or back surface portion provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source and a concave shape and is provided with light guide having an inclined portion facing the incident portion direction, inserting the light source into the recess of the opening or the back portion, parallel to the recess of the opening or the back portion from a light source (180 degrees rays emitted in all directions) in the range 傾斜部で全反射または/および屈折して導光体の表面部から出射するので、半導体発光素子からの出射光を効率良く導光体の四方の表面部から出射でき、どの位置でも高輝度の斑の無い平面発光を得ることができる。 Since emitted from the surface of the total reflection and / or refraction to the light guide in the inclined portion, the light emitted from the semiconductor light emitting element can emit efficiently from all sides of the surface portion of the light guide body, high luminance at any position it is possible to obtain a plane light emission free of plaque. これにより、自由な色の出射光を高輝度で斑の無い出射光が得ることができるとともに薄く広い面積を得ることができ、大型の表示画面等に利用するのに最適な形状を有している。 Thus, the free color light emitted can be obtained a large area thin it is possible to not emit light levelness obtained with high brightness, has an optimum shape for use on a large display screen, etc. there.
【0123】 [0123]
またさらに、請求項10に係る平面発光装置は、赤色発光または緑色発光または青色発光の単色光を出射する各光源を3つの導光体の開口部または裏面部の凹部に各々挿入し、各導光体の表面部から赤色光、緑色光、青色光の各々を出射する3つの導光体を重ね合わせたので、光源を制御することによって出射光がフルカラを表せることができるとともに赤色光、緑色光、青色光を同時に出射することによって白色光を得ることができる。 Furthermore, the planar light-emitting device according to claim 10, respectively inserted into the recess of the opening or the rear surface portion of the three light guide each light source for emitting monochromatic light of red-emitting or green-emitting and blue-emitting, Kakushirube the red light from the surface of the optical body, the green light, since superposition of three light guide for emitting each of blue light, red light with the emitted light by controlling the light source can be expressed a full color, green light, it is possible to obtain white light by emitting a blue light at the same time. このため、フィルタ等が要らなく応答速度の速い平面発光装置を得ることができる。 Therefore, it is possible to filter or the like to obtain a quick planar light emitting device response speed not needed.
【0124】 [0124]
さらに、請求項11に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から円周方向で放射状に出射した光線を光偏向素子で全反射または/および屈折して導光体の Furthermore, the planar light-emitting device according to claim 11, the light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate a light source which is molded so as to emit radially substantially parallel to the opposing mounting surface subjected to total reflection at the surface provided at the position of the semiconductor light emitting device, located in the center of the entrance portion for guiding light from the light source, the light source also the thickness is increased as the distance from the incident portion provided with a recess in the opening or the rear surface portion for inserting a predetermined thickness, a light guide having a light deflecting element in a surface portion and / or back surface, and a reflector that reflects light other than emitting surface and the incident portion, inserting the light source into the recess of the opening or the back portion, the total reflection or the light rays emitted radially in the circumferential direction from the light source in the light deflector / and refracted by the light guide 面部から出射するので、出射光の方向や視野角をコントロールすることができる。 Since emitted from surface portion, it is possible to control the direction and viewing angle of the emitted light. これにより、目的に合った円盤状の高輝度な出射光を得ることができる。 Thus, it is possible to obtain a disk-shaped high luminance emitted light to suit the purpose.
【0125】 [0125]
また、請求項12に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部または裏面部に凹部を設けるとともに入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、表面部または/および裏面部に光偏向素子を設けた導光体と、入射部と出射面部以外の光を反射する反射体とを備え、光源を開口部または裏面部の凹部に挿入し、光源から開口部または裏面部の凹部に平行に出射した光線を光偏 The planar light-emitting device according to claim 12, a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate form, the opposing position is excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected, an incident portion for guiding light from the light source located in the center, also the thickness is increased as the distance from the incident portion provided with a recess in a square shape openings or back surface for inserting the light source is constant thickness, the light in the surface portion and / or back surface portion a light guide having a deflection device, and a reflector that reflects light other than emitting surface and the incident portion, inserting the light source into the recess of the opening or the back portion, the concave portion of the opening portion or the back portion from a light source light polarized light rays in parallel to emit 素子で全反射または/および屈折して導光体の表面部から出射するので、出射光の方向や視野角をコントロールすることができる。 Since emitted from the surface of the total reflection and / or refraction to the light guide body element, it is possible to control the direction and viewing angle of the emitted light. これにより、目的に合った四角状の高輝度な出射光を得ることができる。 Thus, it is possible to obtain a square-shaped high luminance emitted light to suit the purpose.
【0126】 [0126]
さらに、請求項13に係る平面発光装置は、リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の載置面の対向方向に出射する光を半導体発光素子の対向する位置に設けた面で全反射を行い載置面に略並行に放射状に出射するようにモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を反射する反射体とを備え、入射部から遠ざかる Furthermore, the planar light-emitting device according to claim 13, the light emitted in the opposite direction of the mounting surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate a light source which is molded so as to emit radially substantially parallel to the opposing mounting surface subjected to total reflection at the surface provided at the position of the semiconductor light emitting device, located in the center of the entrance portion for guiding light from the light source, the light source an opening for inserting provided, located in the center and the lightguide thickness becomes thicker as the distance from the incident portion, the entrance portion for guiding light from a light source provided with a light deflecting element in a surface portion and / or back surface, a recess for inserting the light source on the back portion includes a lightguide thickness is increased toward the incident portion provided with an optical deflection element, and a reflector for reflecting the light in a surface portion and / or back surface, away from the entrance portion 従って厚さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を前記各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得るので、互いに出射方向の異なる導光体を用いることによって視野角の広い出射光を得ることかできるとともに多くの出射光を出射することができる。 Thus the facing surfaces inclined to each other lightguide thickness is increased toward the incident portion above the light guide thickness is increased, the light source of each of said light guide opening portion and the back portion was inserted into the recess, covering the final back surface and side portions except for the incident portion in the reflector, is reflected in the incident portion direction by the reflector to light traveling in the light guide body thickness is increased as the distance from the entrance portion light an exit light emitted by the light deflector and taper leak, since obtain outgoing light emitted by the light deflector and taper leaked light traveling in the light guide body which is thicker thickness toward the incident portion and the light guide body it can emit many outgoing light is possible either to obtain a wide output light viewing angle by using different light guide of the emission directions. これにより、円形状で広範囲で高輝度の出射光を得ることができる。 Thus, it is possible to obtain a high luminance emitted light in a wide range in a circular shape.
【0127】 [0127]
また、請求項14に係る平面発光装置は、リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で半導体発光素子の側面に対応した四角柱形状を成し、半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、四角柱の側面と四角錐の底辺とが接続する形状にモールドした光源と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の開口部を設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部から遠ざかるに従って厚さが厚くなる導光体と、光源からの光を導く入射部を中心に位置し、光源を挿入する四角形状の凹部を裏面部に設け、表面部または/および裏面部に光偏向素子を設けるとともに入射部に近づくに従って厚さが厚くなる導光体と、光を反 The planar light-emitting device according to claim 14, a square pillar shape corresponding to the side surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the rectangular semiconductor light emitting element mounted on a lead frame or substrate form, the opposing position is excised quadrangular pyramid opposite to the semiconductor light-emitting device, a light source and a bottom side and a quadrangular pyramid square pillar is molded into a shape to be connected, an incident portion for guiding light from the light source located in the center, a rectangular opening for inserting the light source is provided, and a light guide body thickness is increased as the distance from the incident portion is provided with the light deflecting element in a surface portion and / or back surface, the light from the light source located around the entrance portion for guiding, providing a square-shaped recess for inserting the light source on the back portion, the surface portion and / or the light guide thickness is increased toward the incident portion with the rear surface portion providing a light deflecting element and body, a light anti する反射体とを備え、入射部から遠ざかるに従って厚さが厚くなる導光体の上方に入射部に近づくに従って厚さが厚くなる導光体を互いに傾斜する面を向かい合わせにし、光源を各々の導光体の開口部および裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを反射体で覆い、入射部から遠ざかるに従って厚さが厚くなる導光体内に進んだ光を反射体によって入射部方向に反射した光を光偏向素子やテーパーリークにより出射する出射光と、導光体と入射部に近づくに従って厚さが厚くなる導光体内に進んだ光を光偏向素子やテーパーリークにより出射する出射光を得るので、互いに出射方向の異なる導光体を用いることによって視野角の広い出射光を得ることができるとともに多くの出射光を出射することができる。 And a reflector which, in the facing surfaces inclined to each other lightguide becomes thick thickness toward the incident portion above the lightguide thickness becomes thicker as the distance from the incident portion, each of the light source opening of the light guide body and inserted into the recess of the bottom, cover the final back surface and side portions except for the incident portion in the reflector, the light traveling in the light guide body thickness is increased as the distance from the entrance portion and outgoing light emitted by the light deflector and taper leakage light reflected to the incident portion direction by the reflector, Ya optical deflection element the light proceeding to the light guide body thickness is increased toward the incident portion and the light guide body since obtaining the outgoing light emitted by the taper leakage can emit many outgoing light it is possible to obtain a wide output light viewing angle by using different light guide of the emission directions. これにより、四角状で広範囲で高輝度の出射光を得ることができる。 Thus, it is possible to obtain a high luminance emitted light in a wide range in a square shape.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明に係る平面発光装置の概略構成を示す斜視図【図2】本発明に係る光源の実施の形態を示す斜視図【図3】(a)本発明に係る光源の実施の形態を示す斜視図(b)(a)の側面図【図4】本発明に係る光源の実施の形態を示す斜視図【図5】(a)本発明に係る光源の実施の形態を示す斜視図(b)(a)の側面図【図6】(a)本発明に係る光源の実施の形態を示す斜視図(b)(a)の側面図【図7】(a)本発明に係る導光体の平面図(b)(a)の側断面図【図8】(a)本発明に係る導光体の平面図(b)(a)の側断面図【図9】(a)〜(d)本発明に係る導光体の他の実施の形態を示す平面図【図10】本発明に係る導光体の凹形状に於ける光の軌跡の概略図【図11】本発明に係る平面発光装置の光の軌 1 is a perspective view [FIG 3] showing an embodiment of a light source according to the perspective view FIG. 2 the invention showing a schematic configuration of a planar light-emitting device according to the present invention (a) the implementation of a light source according to the present invention perspective view showing an embodiment (b) a perspective showing an embodiment of a light source according to a perspective view showing an embodiment of a light source according to the side view [FIG. 4] the present invention FIG. 5 (a) the invention (a) according to a side view and FIG. 6 (a) side view and FIG. 7 perspective view showing an embodiment of a light source according to the present invention (b) (a) (a) the present invention of FIG. (b) (a) plan view of the light guide (b) a side sectional view and FIG. 8 (a) a plan view of a light guide according to the present invention in (a) (b) (a) a side sectional view and FIG. 9 of (a) ~ (d) a schematic diagram of a concave shape in the light trajectory of the other plan view showing an embodiment of FIG. 10 according to the present invention the light guide of the light guide according to the present invention [11] the present invention trajectories of light plane light emitting device according to the の概略図【図12】(a)従来の平面発光装置の一部拡大平面図(b)(a)の側断面図であって、光の軌跡の概略図【図13】本発明に係る平面発光装置の概略構成を示す図【図14】図13の平面発光装置における右半部の光の軌跡の概略図【図15】本発明に係る平面発光装置の概略構成を示す図【図16】図15の平面発光装置における右半部の光の軌跡の概略図【符号の説明】 A side cross-sectional view of a schematic diagram of FIG. 12 (a) partially enlarged plan view of a conventional planar light-emitting device (b) (a), the plane of the schematic diagram of the light path 13 the invention Figure [16] showing the schematic configuration of a planar light-emitting device according to the schematic diagram of the light path of the right half Figure 15 the present invention in the plane light emitting device of FIG. 14] FIG. 13 shows a schematic configuration of a light emitting device schematic diagram of the light path of the right half portion in the plane light emitting device of FIG. 15 [description of symbols]
1…平面発光装置、2…半導体発光素子、3(3A,3B)…導光体、20,20b…入射部、21…開口部、凹部、22(22A〜22E)…光源、23…リードフレーム、基板、24(24A〜24E)…モールド、25…円錐形状、25a…面、25b…曲面、26…リード端子、27…漏斗形状、27a…曲面、27b…先端、28…四角錐形状、28a…面、31,31b…表面部、32,32b…裏面部、33(33a,33b)…傾斜部、34(34A,34B)…凹形状、35,36…反入射部、60…反射体、L,L1,L2,Lr,LL…光線。 1 ... plane light emitting device, 2 ... semiconductor light-emitting device, 3 (3A, 3B) ... light guide, 20 and 20B ... incident portion, 21 ... opening, recess, 22 (22 a to 22 e) ... light source, 23 ... lead frame , the substrate, 24 (24A to 24E) ... mold, 25 ... conical, 25a ... surface, 25b ... curved surface 26 ... lead terminal, 27 ... funnel-shaped, 27a ... curved, 27b ... tip, 28 ... quadrangular pyramid, 28a ... surface, 31,31B ... surface portion, 32,32B ... back surface, 33 (33a, 33b) ... inclined section, 34 (34A, 34B) ... concave, 35, 36 ... anti-incident portion, 60 ... reflector, L, L1, L2, Lr, LL ... light.

Claims (14)

  1. リードフレームや基板上の載置面に半導体発光素子が載置され、前記半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源において、 The semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, in the light source which is molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element,
    前記モールドは、 下部が円柱形状を成し、前記半導体発光素子に対向する上部位置が前記円柱形状よりも外側に放射状の曲線を有した漏斗形状であるとともに上部位置が逆向きの円錐形状に切除した形状を有し、前記円錐形状の円錐面と前記放射状の曲線の曲面とで全反射を繰り返して前記漏斗形状の先端から水平に円周方向に放射状に出射することを特徴とする光源。 The mold lower portion forms a cylindrical shape, cut the conically upper position is opposite with the upper position facing the semiconductor light emitting element is a funnel-shaped having a radially curved outwardly from said cylindrical light source, characterized in that the shaped, is radially emitted horizontally in the circumferential direction from the tip of the funnel-shaped repeats total reflection at the curved surface of the radial curve and conical surface of the conical shape.
  2. リードフレームや基板上の載置面に半導体発光素子が載置され、前記半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源において、 The semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, in the light source which is molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element,
    前記モールドは、全体が略円錐形状を成し、前記半導体発光素子に対向する位置が逆向きの円錐形状に切除した形状を有し、前記円錐形状の円錐面で全反射をし、やや下方向に傾きを有して放射状に出射することを特徴とする光源。 The mold is entirely a substantially conical shape, the semiconductor light emitting element opposite to the position has a cut shape to a cone shape opposite to the total reflection on the conical surface of the conical, slightly downward light source characterized in that radially emitted with a tilt to.
  3. 前記半導体発光素子は、赤色発光または緑色発光または青色発光の単色光あるいは赤色発光、緑色発光、青色発光を一体にしたことを特徴とする請求項1または請求項記載の光源。 The semiconductor light-red emitting or green-emitting and blue-emitting monochromatic light or red light emission, green light emission, according to claim 1 or claim 2, wherein the light source, characterized in that the blue emitting integrally.
  4. 光源からの光を導く入射部と、該光を出射する表面部と、当該表面部の反対側に位置する裏面部とを有する導光体において、 An incident portion for guiding light from a light source, a surface portion for emitting light, the light guide body having a back portion positioned on the opposite side of the surface portion,
    前記入射部は、前記導光体の中心に位置し、前記光源を挿入する開口部または前記裏面部に凹部を設けるとともに前記表面部および前記裏面部に前記入射部を中心として放射状に同心円上に前記入射部方向に向く傾斜部を有した凹形状を設けたことを特徴とする導光体。 The incident portion is located in the center of the light guide, radially concentrically about said entrance portion to the back portion and contact the surface portion provided with a recess in the opening or the back surface for inserting the light source light guide, characterized in that a said entrance portion concave shape having an inclined portion facing direction.
  5. 光源からの光を導く入射部と、該光を出射する表面部と、当該表面部の反対側に位置する裏面部とを有する導光体において、 An incident portion for guiding light from a light source, a surface portion for emitting light, the light guide body having a back portion positioned on the opposite side of the surface portion,
    前記入射部は、前記導光体の中心に位置し、前記光源を挿入する四角形状の開口部または前記裏面部に四角形状の凹部を設けるとともに前記表面部または/および前記裏面部に前記入射部を中心として平行に前記入射部方向に向く傾斜部を有した凹形状を設けたことを特徴とする導光体。 The incident portion, the located in the center of the light guide member, the surface portion provided with a rectangular recess in a square shape of the opening or the back surface for inserting the light source and / or the entrance portion to the back portion light guide, characterized in that a concave shape having an inclined portion facing the incident portion direction in parallel around the.
  6. 前記入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であることを特徴とする請求項又は記載の導光体。 The or thickness as the distance from the incident portion is thicker is characterized by a constant thickness claim 4 or 5 lightguide according.
  7. 前記表面部および前記裏面部に対して球および楕円球の一部ならびに三角錐、円錐、四角錐、三角柱、四角柱、円柱等から成る形状を垂直にまたは三角柱、四角柱、半円柱等から成る形状を水平にランダムおよび直線状や曲線状ならびに任意の分布で光偏向素子を設けることを特徴とする請求項4〜6の何れかに記載の導光体。 Wherein the surface portion and part as well as a triangular pyramid sphere and ellipsoid with respect to the back part, conical, quadrangular pyramid, triangular prism, quadrangular prism, a vertically or triangular prism consisting of a cylinder or the like, a quadrangular prism, made of a semi-cylindrical, etc. light guide according to any one of claims 4-6, characterized in that the shape providing a light deflecting element in a horizontal random and straight or curved and any distribution.
  8. リードフレームや基板上の載置面に半導体発光素子が載置され、前記半導体発光素子の前記載置面の対向方向に出射する光を前記半導体発光素子の対向する位置に設けた面で全反射を行い、前記載置面に略並行に放射状に出射するように前記半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、 The semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, total reflection of light emitted in the opposite direction of the placing surface in a plane disposed at a position facing the semiconductor light emitting element of the semiconductor light emitting element was carried out, a light source molded with transparent resin or the like in the direction of light emission from the semiconductor light emitting element to emit radially substantially parallel to the mounting surface,
    前記光源からの光を導く入射部が中心に位置し、前記光源を挿入する開口部または裏面部に凹部を設けるとともに前記表面部および前記裏面部に前記入射部を中心として放射状に同心円上に前記入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、 Located in incidence portion mainly for guiding the light from the light source, radially concentrically about said entrance portion to the back portion and contact the surface portion provided with a recess in the opening or the rear surface portion for inserting the light source and a concave shape and is provided with light guide having an inclined portion facing the incident portion direction,
    前記光源を前記開口部または前記裏面部の凹部に挿入し、前記光源から円周方向な放射状に出射した光線を前記傾斜部で全反射または/および屈折して前記導光体の表面部から出射することを特徴とする平面発光装置。 Inserting the light source into the recess of the opening or the back portion, emits a light beam emitted in the circumferential direction radially from the light source from the surface of the total reflection and / or refraction to the light guide in the inclined portion plane light emitting device which is characterized in that.
  9. リードフレームや基板上の載置面に矩形状の半導体発光素子が載置され、前記半導体発光素子の側面に対応した四角柱形状を成し、前記半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、前記四角柱の側面と前記四角錐の底辺とが接続する形状に前記半導体発光素子からの光の出射方向に透明樹脂等でモールドした光源と、 Rectangular semiconductor light emitting element is mounted on the mounting surface of the lead frame or substrate, said forms a square pillar shape corresponding to the side surface of the semiconductor light emitting element, a position facing the semiconductor light emitting element opposite four and resected pyramid shape, is molded with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element in a shape with a side surface of the quadrangular prism and the base of the pyramids connect the light source,
    前記光源からの光を導く入射部が中心に位置し、前記光源を挿入する四角形状の開口部または裏面部に四角形状の凹部を設けるとともに前記表面部または/および前記裏面部に前記入射部を中心として平行に前記入射部方向に向く傾斜部を有した凹形状を設けた導光体とを備え、 Located on the entrance portion center for guiding light from the light source, the incident portion to the surface portion and / or the back portion provided with a rectangular recess in a square shape of the opening or the rear surface portion for inserting the light source comprising a guide and light body having a concave shape having an inclined portion facing the incident portion direction in parallel around,
    前記光源を前記開口部または前記裏面部の凹部に挿入し、前記光源から前記開口部または前記裏面部の凹部に平行に出射した光線を前記傾斜部で全反射または/および屈折して前記導光体の表面部から出射することを特徴とする平面発光装置。 Inserting the light source into the recess of the opening or the back surface, said light beam parallel to the exit in the recess of the opening or the back surface from the light source is totally reflected and / or refracted by the inclined portion and the light guide plane light emitting device, wherein emitted from the surface portion of the body.
  10. 赤色発光または緑色発光または青色発光の単色光を出射する前記各光源を3つの前記導光体の前記開口部または前記裏面部の凹部に各々挿入し、各前記導光体の前記表面部から赤色光、緑色光、青色光の各々を出射する3つの前記導光体を重ね合わせたことを特徴とする請求項または請求項記載の平面発光装置。 Respectively inserted into the recess of the opening or the back portion of the red light-emitting or green-emitting and blue-emitting three of said light guide the light sources for emitting monochromatic light, red from the surface portion of each of the light guide light, green light, flat light emitting device according to claim 8 or claim 9, wherein the superposition of three of the light guide for emitting each of blue light.
  11. リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で前記半導体発光素子の前記載置面の対向方向に出射する光を前記半導体発光素子の対向する位置に設けた面で全反射を行い前記載置面に略並行に放射状に出射するようにモールドした光源と、 Provided light emitted in the opposite direction of the placement surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate to a position facing the semiconductor light emitting element a molded light source to emit radially substantially parallel to the mounting surface before subjected to total reflection at the surface was,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する開口部または裏面部に凹部を設けるとともに前記入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、前記表面部または/および前記裏面部に光偏向素子を設けた導光体と、 Wherein in the center of the entrance portion for guiding light from the light source, the or thickness as the distance from the incident portion provided with a recess in the opening or the rear surface portion for inserting the light source is increased is constant thickness, light and body provided with an optical deflection element to the surface portion and / or the back portion,
    前記入射部と出射面部以外の光を反射する反射体とを備え、 And a reflector that reflects light other than emitting surface portion and said entrance portion,
    前記光源を前記開口部または前記裏面部の凹部に挿入し、前記光源から円周方向で放射状に出射した光線を前記光偏向素子で全反射または/および屈折して前記導光体の表面部から出射することを特徴とする平面発光装置。 Inserting the light source into the recess of the opening or the back surface, the light rays emitted radially in the circumferential direction from the surface portion of the total reflection and / or refraction to the light guide by the light deflecting element from the light source plane light emitting device, wherein emitted.
  12. リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で前記半導体発光素子の側面に対応した四角柱形状を成し、前記半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、前記四角柱の側面と前記四角錐の底辺とが接続する形状にモールドした光源と、 It forms a square pillar shape with a transparent resin or the like in the light emitting direction corresponding to the side surface of the semiconductor light emitting element of a rectangular semiconductor light emitting element placed on the lead frame or substrate, opposite to the semiconductor light emitting element position a light source but which is excised in quadrangular pyramid opposite, the side surface of the quadrangular prism and the base of the pyramids is molded into a shape to be connected,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する四角形状の開口部または裏面部に凹部を設けるとともに前記入射部から遠ざかるに従って厚さが厚くなるまたは厚さが一定であり、前記表面部または/および前記裏面部に前記光偏向素子を設けた導光体と、 Located around the entrance portion for guiding light from the light source, a square-shaped opening or the or thickness as the distance from the incident portion is thicker thickness provided with a recess in the rear surface portion for inserting the light source is constant , and the light guide body and provided the optical deflecting element on said surface portion and / or the back portion,
    前記入射部と出射面部以外の光を反射する反射体とを備え、 And a reflector that reflects light other than emitting surface portion and said entrance portion,
    前記光源を前記開口部または前記裏面部の凹部に挿入し、前記光源から前記開口部または前記裏面部の凹部に平行に出射した光線を前記光偏向素子で全反射または/および屈折して前記導光体の表面部から出射することを特徴とする平面発光装置。 Inserting the light source into the recess of the opening or the back portion, the totally reflected and / or refracted light rays in parallel to emit in the recess of the opening or the back surface from the light source at the light deflection element guide plane light emitting device, wherein emitted from the surface of the optical body.
  13. リードフレームや基板上に載置した半導体発光素子からの光の出射方向に透明樹脂等で前記半導体発光素子の前記載置面の対向方向に出射する光を前記半導体発光素子の対向する位置に設けた面で全反射を行い前記載置面に略並行に放射状に出射するようにモールドした光源と、 Provided light emitted in the opposite direction of the placement surface of the semiconductor light emitting element with a transparent resin or the like in the direction of light emission from the semiconductor light emitting element placed on the lead frame or substrate to a position facing the semiconductor light emitting element a molded light source to emit radially substantially parallel to the mounting surface before subjected to total reflection at the surface was,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する開口部を設け、前記表面部または/および前記裏面部に光偏向素子を設けるとともに前記入射部から遠ざかるに従って厚さが厚くなる導光体と、 Located around the entrance portion for guiding light from the light source, an opening for inserting the light source is provided, the thickness in accordance with provision of the light deflector to the surface portion and / or the back surface away from the entrance portion a light guide body that is thicker,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する凹部を裏面部に設け、前記表面部または/および前記裏面部に光偏向素子を設けるとともに前記入射部に近づくに従って厚さが厚くなる導光体と、 Located around the entrance portion for guiding light from the light source, provided on the back surface a recess for inserting the light source, the thickness as approaching the entrance portion provided with an optical deflection element to the surface portion and / or the back portion a light guide body that is thicker is,
    光を反射する反射体とを備え、 And a reflector for reflecting light,
    前記入射部から遠ざかるに従って厚さが厚くなる前記導光体の上方に前記入射部に近づくに従って厚さが厚くなる前記導光体を互いに傾斜する面を向かい合わせにし、前記光源を前記各々の導光体の前記開口部および前記裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを前記反射体で覆い、前記入射部から遠ざかるに従って厚さが厚くなる前記導光体内に進んだ光を前記反射体によって前記入射部方向に反射した光を前記光偏向素子やテーパーリークにより出射する出射光と、前記導光体と前記入射部に近づくに従って厚さが厚くなる前記導光体内に進んだ光を前記光偏向素子やテーパーリークにより出射する出射光を得ることを特徴とする平面発光装置。 The facing surfaces inclined to each other the light guide thickness is increased as approaching the incident portion above the thickness is increased the light guide as the distance from the incident portion, guiding the light of the respective the opening of the light body and inserted into the recess of the back surface, covering the final back surface and side portions except for the incident portion in the reflector, the lightguide thickness becomes thicker as the distance from the entrance portion and emitted light of the light reflected on the incident portion direction advanced light by the reflector exit by the light deflection element or taper leakage, the light guide thickness is increased as approaching the incident portion and the light guide body plane light emitting device, characterized in that to obtain outgoing light that emits light traveling in the body by the light deflection element or taper leakage.
  14. リードフレームや基板上に載置した矩形状の半導体発光素子からの光の出射方向に透明樹脂等で前記半導体発光素子の側面に対応した四角柱形状を成し、前記半導体発光素子に対向する位置が逆向きの四角錐形状に切除し、前記四角柱の側面と前記四角錐の底辺とが接続する形状にモールドした光源と、 It forms a square pillar shape with a transparent resin or the like in the light emitting direction corresponding to the side surface of the semiconductor light emitting element of a rectangular semiconductor light emitting element placed on the lead frame or substrate, opposite to the semiconductor light emitting element position a light source but which is excised in quadrangular pyramid opposite, the side surface of the quadrangular prism and the base of the pyramids is molded into a shape to be connected,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する四角形状の開口部を設け、前記表面部または/および前記裏面部に光偏向素子を設けるとともに前記入射部から遠ざかるに従って厚さが厚くなる導光体と、 Accordance located around the entrance section for guiding light from the light source, a square-shaped opening for inserting the light source is provided, away from the entrance portion provided with an optical deflection element to the surface portion and / or the back portion a lightguide thickness becomes thick,
    前記光源からの光を導く入射部を中心に位置し、前記光源を挿入する四角形状の凹部を裏面部に設け、前記表面部または/および前記裏面部に光偏向素子を設けるとともに前記入射部に近づくに従って厚さが厚くなる導光体と、 Located around the entrance portion for guiding light from the light source, a square-shaped recess for inserting the light source provided on the back surface portion, the entrance portion provided with an optical deflection element to the surface portion and / or the back portion a lightguide thickness becomes thicker as the distance,
    光を反射する反射体とを備え、 And a reflector for reflecting light,
    前記入射部から遠ざかるに従って厚さが厚くなる前記導光体の上方に前記入射部に近づくに従って厚さが厚くなる前記導光体を互いに傾斜する面を向かい合わせにし、前記光源を前記各々の導光体の前記開口部および前記裏面部の凹部に挿入し、最終裏面部と入射部以外の側面部とを前記反射体で覆い、前記入射部から遠ざかるに従って厚さが厚くなる前記導光体内に進んだ光を前記反射体によって前記入射部方向に反射した光を前記光偏向素子やテーパーリークにより出射する出射光と、前記導光体と前記入射部に近づくに従って厚さが厚くなる前記導光体内に進んだ光を前記光偏向素子やテーパーリークにより出射する出射光を得ることを特徴とする平面発光装置。 The facing surfaces inclined to each other the light guide thickness is increased as approaching the incident portion above the thickness is increased the light guide as the distance from the incident portion, guiding the light of the respective the opening of the light body and inserted into the recess of the back surface, covering the final back surface and side portions except for the incident portion in the reflector, the lightguide thickness becomes thicker as the distance from the entrance portion and emitted light of the light reflected on the incident portion direction advanced light by the reflector exit by the light deflection element or taper leakage, the light guide thickness is increased as approaching the incident portion and the light guide body plane light emitting device, characterized in that to obtain outgoing light that emits light traveling in the body by the light deflection element or taper leakage.
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