JP2003297108A - Ring-like illuminator - Google Patents
Ring-like illuminatorInfo
- Publication number
- JP2003297108A JP2003297108A JP2002099692A JP2002099692A JP2003297108A JP 2003297108 A JP2003297108 A JP 2003297108A JP 2002099692 A JP2002099692 A JP 2002099692A JP 2002099692 A JP2002099692 A JP 2002099692A JP 2003297108 A JP2003297108 A JP 2003297108A
- Authority
- JP
- Japan
- Prior art keywords
- light
- ring
- shaped
- emitting
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0029—Spatial arrangement
- B60Q1/0041—Spatial arrangement of several lamps in relation to each other
- B60Q1/0052—Spatial arrangement of several lamps in relation to each other concentric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えばＬＥＤラ
ンプのような点状光源を用い、この点状光源からの光を
線状光に変換してリング状に発光させるリング状発光体
に関するものである。尚、このリング状発光体は、特に
車両のヘッドランプの電飾やブレーキランプなどの車両
用灯具して用いるのに適する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring-shaped light emitting body which uses a point light source such as an LED lamp and converts light from the point light source into linear light to emit light in a ring shape. is there. In addition, this ring-shaped light emitting body is particularly suitable for use as a vehicle lamp such as an electric decoration of a vehicle headlamp or a brake lamp.
【０００２】[0002]
【従来の技術】従来から、線状の発光が得られる発光体
としては、例えばネオン管や蛍光灯のような電灯が知ら
れているが、かかる電灯は、高電圧を必要とし、感電や
漏電の危険性があるため、例えば、雨や雪のような水気
のある場所では使用することができない。また、上記電
灯は、ガラス管で形成されているので、人や車両等が物
理的に衝突する恐れのある場所では、ガラス管が破損す
る可能性があることから使用することができない。さら
に、リング状に湾曲させるような態様で上記電灯を使用
する場合には、その曲率に合わせたガラス細工を行う必
要があり、これは、熟練を要するとともに、コストの増
大を招くことにある。その上、消費電力が１ｍの長さ当
たり数十Ｗ程度と大きいことから、長時間にわたって使
用する場合には、商用電源が利用できる場所でなければ
使用できない。従って、発光体として上記電灯を用いた
場合、上述した種々の問題点があった。2. Description of the Related Art Conventionally, electric lights such as neon tubes and fluorescent lamps have been known as light emitters capable of obtaining linear light emission. However, such electric lights require high voltage, and electric shock or leakage current. Therefore, it cannot be used in a place with water such as rain or snow. Further, since the electric lamp is formed of a glass tube, it cannot be used in a place where a person, a vehicle, or the like may physically collide, because the glass tube may be damaged. Furthermore, when the above electric lamp is used in a manner that it is curved in a ring shape, it is necessary to perform glass work matching the curvature, which requires skill and increases cost. In addition, since the power consumption is as large as several tens of watts per 1 m, when used for a long time, it can be used only in a place where a commercial power source can be used. Therefore, when the above electric lamp is used as the light emitting body, there are various problems described above.
【０００３】一方、点状光源、例えばＬＥＤ（発光ダイ
オード）ランプは、発光の応答速度が速く、低消費電力
で長寿命であり、小型である等の利点を有している。On the other hand, a point light source, for example, an LED (light emitting diode) lamp has advantages such as a fast response speed of light emission, low power consumption, long life, and small size.
【０００４】かかる点状光源を用いて線状光を発するた
めの手段としては、例えば、管状クラッドと、該管状ク
ラッドの構成材料よりも高屈折率の材料で構成されるコ
アと、該管状クラッドとコアとの間に該管状クラッドの
長さ方向に沿って帯状に延びる反射層とを具える光伝送
チューブを用い、この光伝送チューブの端面にＬＥＤラ
ンプを配置して、このＬＥＤランプから発した光を前記
コアに入射し、この入射光を該反射層で反射・散乱させ
て該反射層形成側と反対側の管状クラッド側周面から線
状光を発する構成にするのが有用である。Examples of means for emitting linear light using such a point light source include, for example, a tubular clad, a core made of a material having a higher refractive index than the constituent material of the tubular clad, and the tubular clad. A light transmission tube including a reflection layer extending in a strip shape along the length direction of the tubular clad between the core and the core is used, and an LED lamp is arranged at an end surface of the light transmission tube. It is useful to have a structure in which the generated light is incident on the core, the incident light is reflected and scattered by the reflective layer, and linear light is emitted from the peripheral surface of the tubular clad side opposite to the reflective layer forming side. .
【０００５】ところで、近年においては、車両、特に高
級乗用車では、その付加価値を高める等の理由から、デ
ザイン等の意匠性を重視する傾向がある。By the way, in recent years, in vehicles, especially high-class passenger cars, there is a tendency to attach importance to designability such as design, for the reason of increasing the added value thereof.
【０００６】車両の意匠性を向上させるための手段とし
ては、例えば、ヘッドライトによる照明光とは別に、Ｌ
ＥＤランプのような点状光源を用いてヘッドライトの外
周縁に沿って配設した発光体をリング状に点灯又は点滅
させてヘッドライトの電飾等を施すことが有用である。As means for improving the design of the vehicle, for example, in addition to the illumination light from the headlight, L
It is useful to use a point light source such as an ED lamp to illuminate or blink a ring-shaped light-emitting body arranged along the outer peripheral edge of the headlight so as to provide an illumination of the headlight.
【０００７】リング状発光体の形成手段としては、例え
ば、米国特許第６１０７９１６号公報に、Ｃ字状の光放
射素子を発光部と、点状光源からの光を導く導光部（光
偏向素子）とでリング状をなし、発光部の向かい合う両
端面を導光部に設けた凹所で保持して、導光部からの入
射光が発光部の両端面を通じて発光部全体にわたって直
接案内されるように構成したリング状発光体が記載され
ている。As a means for forming a ring-shaped light emitting body, for example, US Pat. No. 6,107,916 discloses a C-shaped light emitting element as a light emitting portion and a light guiding portion (light deflecting element) for guiding light from a point light source. ) Form a ring shape, and the opposite end surfaces of the light emitting portion are held by the recesses provided in the light guide portion, and the incident light from the light guide portion is directly guided through the both end surfaces of the light emitting portion over the entire light emitting portion. A ring-shaped light emitter configured as described above is described.
【０００８】しかしながら、上掲公報に記載されたリン
グ状発光体は、発光部と導光部とを別部材で構成してい
るため、導光部内を透過した光が、発光部と導光部の接
触界面で屈折や反射しやすく、また、発光部の端面を導
光部の凹所で保持するだけだと、車両に強い衝撃や振動
が作用した場合には、発光部と導光部の接触面同士がず
れる可能性もあり、かかる場合には、導光部内を透過し
た光を発光部内に有効に取り入れることができず、均一
な輝度のリング状の光が得られない場合がある。However, in the ring-shaped light emitting body described in the above publication, the light emitting portion and the light guiding portion are formed as separate members, so that the light transmitted through the light guiding portion is the light emitting portion and the light guiding portion. Is easily refracted and reflected at the contact interface of the light emitting part, and if only the end face of the light emitting part is held in the recess of the light guiding part, when a strong shock or vibration acts on the vehicle, the light emitting part and the light guiding part The contact surfaces may be displaced from each other, and in such a case, the light transmitted through the light guide portion cannot be effectively taken into the light emitting portion, and ring-shaped light with uniform brightness may not be obtained.
【０００９】[0009]
【発明が解決しようとする課題】この発明の目的は、点
状光源から発する光を発光部内に導光部を経て有効に取
り入れることによって、均一な輝度でリング状の光を発
することができるリング状発光体を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to effectively take in the light emitted from a point light source into the light emitting section through the light guide section, and thereby to generate the ring-shaped light with uniform brightness. The purpose of the present invention is to provide a light emitter.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するた
め、この発明は、一の側周面の側に、点状光源からの入
射光を反射させる光反射手段を有し、他の側周面の側
に、リング状の光を発する発光面を有する発光部と、点
状光源からの光を取り入れる光入射面を有し、発光部の
前記一の側周面の、前記光反射手段の非配設部分の少な
くとも１箇所から突出させ、発光部と一体的に形成した
導光部とを具えることを特徴とするリング状発光体であ
る。また、導光部内に取り入れられた光の少なくとも一
部の進行方向を、発光部の延在方向をなす２方向のうち
の少なくとも１方向に向かって反射させる光偏向手段を
さらに具えることが好ましい。In order to achieve the above object, the present invention has a light reflecting means for reflecting incident light from a point light source on one side peripheral surface side and another side peripheral surface side. On the side of the surface, a light emitting portion having a light emitting surface that emits ring-shaped light, and a light incident surface for taking in light from a point light source are provided, and the one side peripheral surface of the light emitting portion is provided with the light reflecting means. A ring-shaped light-emitting body, comprising: a light-guiding section that is integrally formed with a light-emitting section by protruding from at least one location of a non-disposed portion. Further, it is preferable to further include a light deflecting means for reflecting at least a part of the traveling direction of the light introduced into the light guide section toward at least one of the two directions forming the extending direction of the light emitting section. .
【００１１】発光部は、円形又は多角形の断面形状を有
すること、光偏向手段は、反射層又はハーフミラーであ
ること、及び／又は、光偏向手段は、前記光入射面から
導光部内に取り入れられた光の少なくとも一部を、発光
部の延在方向をなす２方向に反射させることが好まし
い。The light emitting section has a circular or polygonal cross-sectional shape, the light deflecting means is a reflecting layer or a half mirror, and / or the light deflecting means is located in the light guide section from the light incident surface. It is preferable that at least a part of the taken-in light is reflected in two directions forming the extending direction of the light emitting unit.
【００１２】さらに、リング状発光体は、点状光源を取
り付けた連結手段を有し、この連結手段を導光部の端部
に連結して、点状光源とこれに対向する導光部の光入射
面との間の距離を一定に保持することが好ましい。Further, the ring-shaped light emitting body has a connecting means to which a point light source is attached, and the connecting means is connected to an end portion of the light guide section so that the point light source and the light guide section opposed thereto are connected. It is preferable to keep the distance from the light incident surface constant.
【００１３】さらにまた、リング状発光体は、一の側面
の側に点状光源からの入射光を反射させる光反射手段を
有し、他の側面の側に線状光を発する発光面を有する発
光部を具える棒状発光体を、リング状に湾曲させて前記
発光部を形成するとともに、リング状に湾曲させた棒状
発光体の両端部の外面同士を拝み合わせ状態で接合し、
この接合された前記両端部によって、独立した２個の光
入射面を有する前記導光部を形成することが好ましく、
加えて、２個の光入射面に対応して2個の点状光源をそ
れぞれ対向させて配設することがより好ましい。尚、点
状光源はＬＥＤランプであることが好ましく、また、リ
ング状発光体は、ヘッドライトの電飾やブレーキランプ
等の車両用灯具として使用することがより好適である。Furthermore, the ring-shaped light emitting body has a light reflecting means for reflecting incident light from the point light source on one side surface side, and has a light emitting surface for emitting linear light on the other side surface side. A rod-shaped light emitting body having a light emitting portion is curved in a ring shape to form the light emitting portion, and outer surfaces of both ends of the rod-shaped light emitting body curved in a ring shape are joined together in a worried state,
It is preferable to form the light guide portion having two independent light incident surfaces by the joined both end portions,
In addition, it is more preferable to dispose two point light sources facing the two light incident surfaces, respectively. The point light source is preferably an LED lamp, and the ring-shaped light emitting body is more preferably used as a vehicle lamp such as an electric decoration of a headlight or a brake lamp.
【００１４】[0014]
【発明の実施の形態】図１は、この発明に従う代表的な
リング状発光体の一例を示したものであり、図１(a)が
斜視図、図１(b)が側面図である。図１(a),(b)に示すリ
ング状発光体１Ａは、発光部２と、導光部３と、光偏向
手段４とで主に構成されている。1 shows an example of a typical ring-shaped light emitting body according to the present invention. FIG. 1 (a) is a perspective view and FIG. 1 (b) is a side view. The ring-shaped light emitting body 1A shown in FIGS. 1A and 1B is mainly composed of a light emitting section 2, a light guiding section 3, and a light deflecting means 4.
【００１５】発光部２は、例えば、高屈折率をもつコア
５と、コア５よりも低い屈折率をもち、コア５の外面を
被覆するクラッド６とで主に構成されている（図３(a),
(b)参照）。The light emitting section 2 is mainly composed of, for example, a core 5 having a high refractive index and a clad 6 having a refractive index lower than that of the core 5 and covering the outer surface of the core 5 (see FIG. 3 ( a),
(See (b)).
【００１６】また、発光部２の一の側周面７の側であっ
て、コア５とクラッド６の間に、点状光源８からの入射
光を反射させる光反射手段９を有し、他の側周面10の側
に、リング状の光を発する発光面11を有している（図３
(a),(b)）。On the side of the side peripheral surface 7 of the light emitting portion 2, between the core 5 and the clad 6, there is a light reflecting means 9 for reflecting the incident light from the point light source 8, and the other. Has a light emitting surface 11 that emits ring-shaped light on the side surface 10 side (see FIG. 3).
(a), (b)).
【００１７】発光部２は、真円形（図２(a)）や楕円形
又は四角形（図２(b)）のような多角形の断面形状を有
することが好ましい。The light emitting section 2 preferably has a polygonal cross section such as a perfect circle (FIG. 2A), an ellipse or a quadrangle (FIG. 2B).
【００１８】発光部２を構成するコア５としては、クラ
ッド６よりも屈折率が高く、変形しにくい固体状の透光
材料を用いることが好ましく、例えば、ポリスチレン、
スチレン・メチルメタクリレート共重合体、（メタ）ア
クリル樹脂、ポリメチルペンテン、アリルグリコールカ
ーボネート樹脂、スピラン樹脂、アモルファスポリオレ
フィン、ポリカーボネート、ポリアミド、ポリアリレー
ト、ポリサルホン、ポリアリルサルホン、ポリエーテル
サルホン、ポリエーテルイミド、ポリイミド、ジアリル
フタレート、フッ素樹脂、ポリエステルカーボネート、
ノルボルネン系樹脂（ＡＲＴＯＮ）、脂環式アクリル樹
脂（オプトレッツ）、シリコーン樹脂、アクリルゴム、
シリコーンゴムなどの透明材料が挙げられ、これらの１
種を単独で又は２種以上を組み合わせて用いることがで
きる。As the core 5 constituting the light emitting section 2, it is preferable to use a solid light-transmitting material having a refractive index higher than that of the clad 6 and being hard to be deformed. For example, polystyrene,
Styrene / methyl methacrylate copolymer, (meth) acrylic resin, polymethylpentene, allyl glycol carbonate resin, spirane resin, amorphous polyolefin, polycarbonate, polyamide, polyarylate, polysulfone, polyallylsulfone, polyethersulfone, polyether Imide, polyimide, diallyl phthalate, fluororesin, polyester carbonate,
Norbornene-based resin (ARTON), alicyclic acrylic resin (Opttrez), silicone resin, acrylic rubber,
Transparent materials such as silicone rubber can be mentioned.
The seeds may be used alone or in combination of two or more.
【００１９】発光部２を構成するクラッド６としては、
コア５よりも屈折率が低い透光材料であればよく、例え
ば、プラスチックやエラストマーなどの有機材料が挙げ
られ、より具体的には、ポリエチレン、ポリプロピレ
ン、ポリメチル（メタ）アクリレート、フッ化ポリメチ
ル（メタ）アクリレート、ポリ塩化ビニル、ポリ塩化ビ
ニリデン、ポリ酢酸ビニル、ポリエチレン−酢酸ビニル
共重合体、ポリビニルアルコール、ポリエチレン−ポリ
ビニルアルコール共重合体、フッ素樹脂、シリコーン樹
脂、天然ゴム、ポリイソプレンゴム、ポリブタジエンゴ
ム、スチレン−ブタジエン共重合体、ブチルゴム、ハロ
ゲン化ブチルゴム、クロロプレンゴム、アクリルゴム、
エチレン−プロピレン−ジエン共重合体（ＥＰＤＭ）、
アクリロニトリル−ブタジエン共重合体、フッ素ゴム、
シリコーンゴムなどが挙げられ、これらの１種を単独で
又は２種以上を組み合わせて用いることができる。尚、
上述した発光部の構成は、コアとクラッドで構成されて
いる場合について説明しているが、例えば、クラッドな
し（厳密には空気がクラッド）で構成してもよい。As the clad 6 constituting the light emitting section 2,
Any transparent material having a refractive index lower than that of the core 5 may be used, and examples thereof include organic materials such as plastics and elastomers, and more specifically, polyethylene, polypropylene, polymethyl (meth) acrylate, polymethyl fluoride (meth). ) Acrylate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyethylene-vinyl acetate copolymer, polyvinyl alcohol, polyethylene-polyvinyl alcohol copolymer, fluororesin, silicone resin, natural rubber, polyisoprene rubber, polybutadiene rubber, Styrene-butadiene copolymer, butyl rubber, halogenated butyl rubber, chloroprene rubber, acrylic rubber,
Ethylene-propylene-diene copolymer (EPDM),
Acrylonitrile-butadiene copolymer, fluororubber,
Silicone rubber and the like can be used, and one of these can be used alone or two or more can be used in combination. still,
Although the above-described structure of the light emitting unit is described as being composed of a core and a clad, for example, it may be composed without a clad (strictly speaking, air is a clad).
【００２０】点状光源８としては、例えば、発光の応答
速度が速く、低消費電力で長寿命であり、小型である等
の利点を有するＬＥＤランプを用いることが好ましい。
また、ＬＥＤランプ８としてＲＧＢ３色ＬＥＤランプを
用いれば、赤（Ｒ）、緑（Ｇ）、青（Ｂ）、白（Ｒ＋Ｇ
＋Ｂ）、黄（Ｒ＋Ｇ）、紫（Ｒ＋Ｂ）及びコバルトブル
ー（Ｇ＋Ｂ）の７色に変化することが可能になるので、
特にヘッドランプの電飾等に適用することが好適であ
る。As the point light source 8, it is preferable to use, for example, an LED lamp which has advantages such as fast response speed of light emission, low power consumption, long life, and small size.
If an RGB three-color LED lamp is used as the LED lamp 8, red (R), green (G), blue (B), white (R + G)
+ B), yellow (R + G), purple (R + B), and cobalt blue (G + B) can be changed to seven colors.
In particular, it is suitable to be applied to the electric decoration of headlamps and the like.
【００２１】光反射手段９は、白色顔料や散乱材を含む
（メタ）アクリル系ポリマー等で形成した白色線や金属
層などからなる反射層で構成するか、または、一の側周
面７に、三角形の断面形状を有する山部を周方向に設
け、かかる山部を構成する斜面で反射させるように構成
することが好ましい。The light-reflecting means 9 is composed of a white wire formed of a (meth) acrylic polymer containing a white pigment or a scattering material, a reflective layer formed of a metal layer, or the one side peripheral surface 7 It is preferable that a mountain portion having a triangular cross-sectional shape is provided in the circumferential direction, and the mountain surface is reflected by an inclined surface.
【００２２】白色顔料や散乱材としては、例えばシリコ
ーン樹脂粒子やポリスチレン樹脂粒子等の有機ポリマー
粒子、Al2O3、TiO2、SiO2等の金属酸化物粒子、BaSO4等
の硫酸塩粒子、CaCO3等の炭酸塩粒子などが挙げられ、
これらの１種を単独で又は２種以上を併用して使用すれ
ばよい。Examples of the white pigment and the scattering material include organic polymer particles such as silicone resin particles and polystyrene resin particles, metal oxide particles such as Al 2 O 3 , TiO 2 and SiO 2 , sulfate particles such as BaSO 4 , Examples include carbonate particles such as CaCO 3 .
These 1 type may be used individually or in combination of 2 or more types.
【００２３】尚、発光部２の発光面11は、導光部３の光
入射面12から離れる位置にあるほど光量が少なくなるた
め、均一な輝度でリング状の発光を得るには光反射手段
９の適正化を図ることが好ましい。例えば、発光部は、
点状光源から離れる位置にある部分ほど、反射層９の幅
を広くするか（図３(a),(b)）、あるいは、山部の配設
数を増加させたり、山部の配設ピッチを狭くするなどの
手段を講じることによって、均一な輝度で発光体をリン
グ状に発光させることができる。Since the light emitting surface 11 of the light emitting portion 2 is located farther from the light incident surface 12 of the light guiding portion 3, the amount of light becomes smaller. Therefore, in order to obtain ring-shaped light emission with uniform brightness, the light reflecting means is provided. It is preferable to make 9 appropriate. For example, the light emitting unit
The width of the reflection layer 9 is made wider at the position farther from the point light source (FIGS. 3 (a) and 3 (b)), or the number of peaks is increased or the peaks are arranged. By taking measures such as narrowing the pitch, the light-emitting body can emit light in a ring shape with uniform brightness.
【００２４】また、発光部２の発光面11以外の部分から
光が漏れる恐れがある場合には、図1(a)に示すように、
発光部２の発光面11以外の部分を覆うように保護層13を
配設することが好ましい。この保護層13によって、反射
層９で反射できずに漏れた光を反射させることにより光
の損失を低減して、発光面11の輝度を高めることができ
る。If there is a risk of light leaking from a portion other than the light emitting surface 11 of the light emitting portion 2, as shown in FIG. 1 (a),
It is preferable to dispose the protective layer 13 so as to cover the portion of the light emitting unit 2 other than the light emitting surface 11. The protective layer 13 reflects the light that cannot be reflected by the reflective layer 9 and leaks, thereby reducing the loss of light and increasing the brightness of the light emitting surface 11.
【００２５】保護層13としては、例えば銀、アルミニウ
ム等の金属箔や金属シート、又は光を散乱する散乱性粒
子を分散させた塗膜などを用いることが好ましい。As the protective layer 13, it is preferable to use, for example, a metal foil or a metal sheet of silver, aluminum or the like, or a coating film in which scattering particles that scatter light are dispersed.
【００２６】導光部３は、点状光源８からの光を取り入
れる光入射面12を有し、発光部２の前記一の側周面７
の、前記光反射手段９の非配設部分の少なくとも１箇所
から突出させ、発光部２と一体的に形成する。尚、導光
部３を発光部の側周面７の2箇所以上に設ける場合に
は、側周面７上に均等間隔で配設することが、均一な輝
度でリング状の光を得る点で好ましい。The light guide section 3 has a light incident surface 12 for taking in light from the point light source 8, and the one side peripheral surface 7 of the light emitting section 2.
Of the light reflecting means 9 is projected from at least one portion of the non-arranged portion and is formed integrally with the light emitting portion 2. When the light guide parts 3 are provided at two or more places on the side peripheral surface 7 of the light emitting part, it is necessary to arrange them on the side peripheral surface 7 at even intervals so that ring-shaped light can be obtained with uniform brightness. Is preferred.
【００２７】光偏向手段４は、前記光入射面12から導光
部３内に採り入れられた光の少なくとも一部の進行方向
を、発光部２の延在方向14をなす２方向のうちの少なく
とも１方向に反射させる構成を有している。The light deflecting means 4 sets the traveling direction of at least part of the light introduced from the light incident surface 12 into the light guide section 3 to at least one of the two extending directions 14 of the light emitting section 2. It is configured to reflect in one direction.
【００２８】尚、より均一な輝度でリング状の発光を実
現するには、光偏向手段４は、前記光入射面12から導光
部３内に採り入れられた光の少なくとも一部の進行方向
を、発光部２の延在方向14をなす２方向に反射させる構
成にすることがより好適である。In order to realize ring-shaped light emission with more uniform brightness, the light deflecting means 4 causes the light incident surface 12 to guide at least a part of the traveling direction of the light introduced into the light guide section 3. More preferably, the light emitting section 2 is configured to reflect in two directions forming the extending direction 14.
【００２９】光偏向手段４としては、具体的には、光入
射面12から導光部３内に取り入れられた光が最初に衝突
する発光部２の発光面11の部分に、図１(a),(b)に示す
ようなプリズム状の反射層、又はハーフミラーを配設し
て、光の進行方向を発光部２内に反射させることが好ま
しい。As the light deflecting means 4, specifically, a portion of the light emitting surface 11 of the light emitting portion 2 where the light introduced from the light incident surface 12 into the light guide portion 3 first collides is shown in FIG. ) and (b), it is preferable to dispose a prism-shaped reflective layer or a half mirror to reflect the traveling direction of light into the light emitting section 2.
【００３０】一般に、導光部３内に取り入れられた光が
最初に衝突する発光面11の特定部分11aは、他の発光面
の部分11ｂに比べて発光量が多く、前者が高輝度、後者
が低輝度となる傾向がある。In general, the specific portion 11a of the light emitting surface 11 on which the light introduced into the light guide portion 3 first collides has a larger amount of light emission than the other portion 11b of the light emitting surface. Tends to have low brightness.
【００３１】この場合には、発光面11の特定部分11a
に、入射光を透過光と反射光に２分するハーフミラーを
設けることによって、リング状の発光面11を均一な輝度
で発光させることができる。In this case, the specific portion 11a of the light emitting surface 11
In addition, by providing a half mirror that divides the incident light into a transmitted light and a reflected light, the ring-shaped light emitting surface 11 can emit light with uniform brightness.
【００３２】また、発光面11の特定部分11aが他の部材
によって隠れるような用途に用いられる場合には、発光
面11の特定部分11aに反射層を配設すればよく、これに
よって、発光面11の他の部分11bでの輝度を高めること
ができる。尚、この場合の発光面11での発光は、厳密に
はリング状ではなくＣ字状となるが、例えば、車両のヘ
ッドライトに使用する場合には、発光面の発光しない特
定部分11aを他の部材等で見えなくなるような位置に配
置することが意匠性を高める点で好ましい。When the specific portion 11a of the light emitting surface 11 is used for the purpose of being hidden by another member, a reflective layer may be provided on the specific portion 11a of the light emitting surface 11, whereby the light emitting surface 11a is formed. The brightness in the other portion 11b of 11 can be increased. In this case, the light emission from the light emitting surface 11 is not a ring shape but a C-shape in a strict sense. It is preferable to arrange it at a position where it cannot be seen by the member etc. from the viewpoint of improving the design.
【００３３】また、リング状発光体１は、点状光源８を
取り付けた連結手段15、図2(a),(b)ではソケット15を有
し、この連結手段15を導光部３の端部に連結して、点状
光源８とこれに対向する導光部３の光入射面12との間の
距離を一定に保持することが好ましい。Further, the ring-shaped light emitting body 1 has a connecting means 15 to which the point light source 8 is attached, and a socket 15 in FIGS. 2 (a) and 2 (b). It is preferable that the distance between the point light source 8 and the light incident surface 12 of the light guide section 3 facing the point light source 8 is kept constant by connecting to the section.
【００３４】さらに、図２(a),(b)に示すようなリング
状発光体１の形成は、例えば、一の側面の側に点状光源
からの入射光を反射させる光反射手段を有し、他の側面
の側に線状光を発する発光面を有する発光部を具える棒
状発光体をリング状に湾曲させて前記発光部２を形成す
るとともに、リング状に湾曲させた棒状発光体の両端部
の外面同士を拝み合わせ状態で接合して、独立した２個
の光入射面12a,12bを有する前記導光部３を形成する。
従って、リング状発光体の両端から光を取り入れるの
で、高輝度かつ均一の発光を実現できる。Further, in the formation of the ring-shaped light emitting body 1 as shown in FIGS. 2A and 2B, for example, a light reflecting means for reflecting the incident light from the point light source is provided on one side surface side. Then, a rod-shaped light-emitting body having a light-emitting portion having a light-emitting surface that emits linear light on the side of the other side surface is curved in a ring shape to form the light-emitting portion 2, and the rod-shaped light-emitting body curved in a ring shape The outer surfaces of the both end portions are joined together in a state of worship to form the light guide portion 3 having two independent light incident surfaces 12a and 12b.
Therefore, since light is taken in from both ends of the ring-shaped light emitting body, high brightness and uniform light emission can be realized.
【００３５】かかる場合、２個の光入射面12a,12bにそ
れぞれ対向させて点状光源8a,8bを配設することがより
好適であり、これによって、より均一な輝度でリング状
に発光させることができる。In such a case, it is more preferable to dispose the point light sources 8a and 8b so as to face the two light incident surfaces 12a and 12b, respectively, whereby the ring-shaped light is emitted with more uniform brightness. be able to.
【００３６】尚、上述したところは、この発明の実施形
態の一例を示したにすぎず、請求の範囲において種々の
変更を加えることができる。例えば、図１〜３に示すリ
ング状発光体1A,1Bは、ヘッドライトの電飾や表示灯と
して使用できる他、点状光源８として、発光の応答速度
が速いＬＥＤランプを用いれば、ブレーキランプとして
も適用することができ、さらに、リング状の発光が必要
なあらゆる分野で適用することも可能である。The above description is merely an example of the embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, the ring-shaped light emitters 1A and 1B shown in FIGS. 1 to 3 can be used as an illumination of headlights and an indicator lamp, and if a point light source 8 is an LED lamp having a fast light emission response speed, a brake lamp is used. The present invention can also be applied to any field requiring ring-shaped light emission.
【００３７】[0037]
【発明の効果】この発明によれば、点状光源から発する
光を発光部内に導光部を経て有効に取り入れることによ
って、均一な輝度でリング状の光を発することができる
リング状発光体の提供が可能になった。According to the present invention, a ring-shaped light emitting body capable of emitting ring-shaped light with uniform brightness by effectively taking in light emitted from a point light source into a light emitting section through a light guide section. Offering is now possible.
【図１】 この発明に従うリング状発光体の一例を示し
たものであり、(a)は斜視図、(b)は側面図である。FIG. 1 shows an example of a ring-shaped light emitting body according to the present invention, (a) is a perspective view and (b) is a side view.
【図２】 リング状発光体の他の実施形態を示したもの
であり、(a)は斜視図、(b)は側面図である。2A and 2B show another embodiment of a ring-shaped light emitting body, FIG. 2A is a perspective view, and FIG. 2B is a side view.
【図３】 (a)及び(b)は、それぞれ図２(a)に示すＡ−
Ａ断面図及びＢ−Ｂ断面図である。3 (a) and (b) are A- shown in FIG. 2 (a), respectively.
It is an A sectional view and a BB sectional view.
1A,1B リング状発光体 ２ 発光部 ３ 導光部 ４ 光偏向手段 ５ コア ６ クラッド ７、10 発光部の側周面 ８、8a、8b 点状光源（又はＬＥＤランプ） ９ 光反射手段 11 発光面 12、12a、12b 導光部の光入射面 13 保護層 14 発光部の延在方向 15 連結手段（又はソケット） 1A, 1B ring-shaped light emitter 2 Light emitting part 3 Light guide 4 Light deflection means 5 cores 6 clad 7, 10 Side surface of light emitting part 8, 8a, 8b Point light source (or LED lamp) 9 Light reflection means 11 Light emitting surface 12, 12a, 12b Light incident surface of light guide 13 Protective layer 14 Light emitting part extension direction 15 Connection means (or socket)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２１Ｙ 101:02 Ｆ２１Ｐ 3/00 Ｚ Ｆ２１Ｑ 1/00 Ｅ Ｎ (72)発明者 吉川 雅人 東京都小平市上水本町３−16−15−102 Ｆターム(参考） 3K060 AA06 BA17 BB01 BB02 BB03 BD04 EA01 3K080 AA01 AB01 BA07 BB19 5F041 AA05 AA24 AA47 DB02 DC81 EE21 EE23 EE25 FF12 FF16─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) F21Y 101: 02 F21P 3/00 Z F21Q 1/00 EN (72) Inventor Masato Yoshikawa Above Kodaira, Tokyo Mizumotocho 3-16-15-102 F term (reference) 3K060 AA06 BA17 BB01 BB02 BB03 BD04 EA01 3K080 AA01 AB01 BA07 BB19 5F041 AA05 AA24 AA47 DB02 DC81 EE21 EE23 EE25 FF12 FF16
Claims (10)
光を反射させる光反射手段を有し、他の側周面の側に、
リング状の光を発する発光面を有する発光部と、点状光
源からの光を取り入れる光入射面を有し、発光部の前記
一の側周面の、前記光反射手段の非配設部分の少なくと
も１箇所から突出させ、発光部と一体的に形成した導光
部と、を具えることを特徴とするリング状発光体。1. A light reflecting means for reflecting incident light from a point light source is provided on one side peripheral surface side, and another side peripheral surface side is provided.
A light-emitting portion having a light-emitting surface that emits ring-shaped light; and a light-incident surface that takes in light from a point light source, and the one side peripheral surface of the light-emitting portion, which is not provided with the light reflecting means. A ring-shaped light-emitting body, comprising: a light guide section that is formed integrally with the light-emitting section and that projects from at least one location.
も一部の進行方向を、発光部の延在方向をなす２方向の
うちの少なくとも１方向に向かって反射させる光偏向手
段をさらに具える請求項１記載のリング状発光体。2. A light deflecting means for reflecting the traveling direction of at least a part of the light introduced into the light guide section toward at least one of the two directions forming the extending direction of the light emitting section. The ring-shaped light emitting body according to claim 1.
有する請求項１又は２記載のリング状発光体。3. The ring-shaped light emitting body according to claim 1, wherein the light emitting portion has a circular or polygonal cross-sectional shape.
である請求項２又は３記載のリング状発光体。4. The ring-shaped light emitting body according to claim 2, wherein the light deflecting means is a reflecting layer or a half mirror.
た光の少なくとも一部を、発光部の延在方向をなす２方
向に向かって反射させる請求項２、３又は４記載のリン
グ状発光体。5. The ring shape according to claim 2, 3 or 4, wherein the light deflector reflects at least a part of the light introduced into the light guide section in two directions forming the extending direction of the light emitting section. Luminous body.
た連結手段を有し、この連結手段を導光部の端部に連結
して、点状光源とこれに対向する導光部の光入射面との
間の距離を一定に保持する請求項１〜５のいずれか１項
記載のリング状発光体。6. The ring-shaped light-emitting body has a connecting means to which a point light source is attached, and the connecting means is connected to an end portion of the light guide section so that the point light source and the light guide section facing the point light source. The ring-shaped light emitting body according to any one of claims 1 to 5, which maintains a constant distance from the light incident surface.
光源からの入射光を反射させる光反射手段を有し、他の
側面の側に線状光を発する発光面を有する発光部を具え
る棒状発光体を、リング状に湾曲させて前記発光部を形
成するとともに、リング状に湾曲させた棒状発光体の両
端部の外面同士を拝み合わせ状態で接合し、この接合さ
れた前記両端部によって、独立した２個の光入射面を有
する前記導光部を形成してなる請求項１〜６のいずれか
１項記載のリング状発光体。7. The ring-shaped light-emitting body has light-reflecting means for reflecting incident light from a point-like light source on one side surface side, and light-emitting surface for emitting linear light on the other side surface side. The rod-shaped light-emitting body including the portion is curved in a ring shape to form the light-emitting portion, and the outer surfaces of both ends of the rod-shaped light-emitting body curved in a ring shape are joined together in a worshipped state, and these are joined together. 7. The ring-shaped light emitting body according to claim 1, wherein the both end portions form the light guide portion having two independent light incident surfaces.
源をそれぞれ対向させて配設する請求項７記載のリング
状発光体。8. The ring-shaped light-emitting body according to claim 7, wherein two point-shaped light sources are arranged facing each other so as to correspond to the two light-incident surfaces.
〜８のいずれか１項記載のリング状発光体。9. The point light source is an LED lamp.
9. The ring-shaped light emitting body according to any one of items 1 to 8.
用する請求項１〜９のいずれか１項記載のリング状発光
体。10. The ring-shaped light emitter according to claim 1, wherein the ring-shaped light emitter is used as a vehicular lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002099692A JP2003297108A (en) | 2002-04-02 | 2002-04-02 | Ring-like illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002099692A JP2003297108A (en) | 2002-04-02 | 2002-04-02 | Ring-like illuminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003297108A true JP2003297108A (en) | 2003-10-17 |
Family
ID=29388218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002099692A Pending JP2003297108A (en) | 2002-04-02 | 2002-04-02 | Ring-like illuminator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003297108A (en) |
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