JPS6366001B2 - - Google Patents
Info
- Publication number
- JPS6366001B2 JPS6366001B2 JP59233273A JP23327384A JPS6366001B2 JP S6366001 B2 JPS6366001 B2 JP S6366001B2 JP 59233273 A JP59233273 A JP 59233273A JP 23327384 A JP23327384 A JP 23327384A JP S6366001 B2 JPS6366001 B2 JP S6366001B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- diode
- holding member
- emitting diode
- 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.)
- Expired
Links
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は発光ダイオードを光源として利用した
車輌用灯具に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicular lamp using a light emitting diode as a light source.
近年、半導体技術の発達により輝度の高い発光
ダイオードが開発され、しかも安価に入手できる
ようになつたことから、車輌用灯具，例えば方向
指示灯，後退灯，尾灯などの光源として電球の代
りに使用されるに至つており、その一例として実
開昭57−112405号，実開昭58−34301号等が知ら
れている。
In recent years, advances in semiconductor technology have led to the development of high-brightness light-emitting diodes, which are now available at low prices, and are now being used in place of light bulbs as light sources for vehicle lights, such as turn signals, reversing lights, taillights, etc. As examples, Utility Model Application No. 57-112405 and Utility Model Application No. 58-34301 are known.
しかし、このような灯具にあつては各発光ダイ
オードが点光源を構成しているため、前面レンズ
の発光ダイオードに対応する部分が対応しない部
分に比べて明るく照明され、均一照明という点で
問題があつた。
However, in such lighting equipment, each light emitting diode constitutes a point light source, so the part of the front lens that corresponds to the light emitting diode is illuminated brighter than the part that does not correspond, which poses a problem in terms of uniform illumination. It was hot.
本発明は上述したような点に鑑みてなされたも
ので、灯室内に配設された導光体から成るダイオ
ード保持部材の背面側に各発光ダイオードをそれ
ぞれ収納保持する収納凹部を設け、この収納凹部
の内底面もしくは少なくとも該凹部に対応するダ
イオード保持部材の表面に拡散レンズを設けたも
のである。
The present invention has been made in view of the above-mentioned points, and is provided with a storage recess for storing and holding each light emitting diode on the back side of a diode holding member made of a light guide disposed in a lamp chamber. A diffusing lens is provided on the inner bottom surface of the recess or at least on the surface of the diode holding member corresponding to the recess.
本発明においては拡散レンズによつて発光ダイ
オードからの光を拡散させるようにしたので、発
光出力の指向性を制御し、前面レンズを均一に照
明する。
In the present invention, since the light from the light emitting diode is diffused by the diffusion lens, the directivity of the light emission output is controlled and the front lens is uniformly illuminated.
以下、本発明を図面に示す実施例に基づいて詳
細に説明する。
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第１図は本発明を自動車の尾灯に適用した場合
の一実施例を示す一部破断斜視図，第２図は要部
拡大断面図である。これらの図において、１は自
動車の後部側端に取付けられた尾灯で、バツクカ
バー２，バツクカバー２の前面を覆う如く該カバ
ーに取付けられた前面レンズ３，バツクカバー２
と前面レンズ３によつて形成された灯室４内に配
設されたダイオード保持部材５，発光ダイオード
６および回路基板７等によつて構成されている。 FIG. 1 is a partially cutaway perspective view showing an embodiment in which the present invention is applied to a tail light of an automobile, and FIG. 2 is an enlarged sectional view of the main part. In these figures, reference numeral 1 denotes a tail light attached to the rear end of the automobile, a back cover 2, a front lens 3 attached to the cover so as to cover the front of the back cover 2, and the back cover 2.
It is composed of a diode holding member 5, a light emitting diode 6, a circuit board 7, etc., arranged in a lamp chamber 4 formed by a front lens 3 and a front lens 3.
前記バツクカバー２は左右方向に長い板状に形
成されて車体本体に取付けられ、車体側方側端に
は車体本体に沿つて折曲された折曲部２Ａが一体
に設けられている。 The back cover 2 is formed into a plate shape that is elongated in the left-right direction and is attached to the vehicle body, and is integrally provided with a bent portion 2A that is bent along the vehicle body at the side end of the vehicle body.
前記前面レンズ３はアクリル樹脂等の透光性を
有する樹脂によつて背面側に開放する浅箱状に形
成され、その周縁部が止めねじ８，図示しないガ
スケツト，接着剤等を介して前記バツクカバー２
に気密に固定されている。また、前面レンズ３の
車体側方側端には前面バツクカバー２の折曲部２
Ａと同様、車体側面に沿つて折曲された折曲部３
Ａが一体に設けられ、これによつて廻り込みレン
ズを構成している。そして、前面レンズ３はその
表面を車体色と同一色の遮光膜９によつてマスキ
ング塗装されることにより、縦，横方向に所定の
間隔をおいて設けられた多数の光透過部１０を有
し、それ以外の部分は遮光膜９によつて光不透過
部を構成しており、また内側面には多数の凸レン
ズ１１が密集して形成されている。 The front lens 3 is formed of a translucent resin such as acrylic resin into a shallow box shape that opens to the back side, and its peripheral edge is connected to the back cover via a set screw 8, a gasket (not shown), an adhesive, etc. 2
is fixed airtight. In addition, a bent portion 2 of the front back cover 2 is located at the side end of the front lens 3 on the side of the vehicle body.
Similar to A, the bent part 3 is bent along the side of the vehicle body.
A is provided integrally, thereby forming a wraparound lens. The front lens 3 has a large number of light transmitting parts 10 provided at predetermined intervals in the vertical and horizontal directions by masking its surface with a light shielding film 9 of the same color as the vehicle body. However, the other parts constitute a light-impermeable part by the light-shielding film 9, and a large number of convex lenses 11 are densely formed on the inner surface.
前記ダイオード保持部材５は発光ダイオード６
を保持する機能に加えて該ダイオード６から出た
光をより遠くへ導き、光のロスを防止する機能を
有するもので、そのため透明なアクリル樹脂等か
ら成る導光体で略Ｌ字形に形成され、その端部が
前記前面レンズ３の端部内側面に止めねじ１２に
よつて固定されている。また、ダイオード保持部
材５の背面側には多数の収納凹部１３が前記前面
レンズ３の各光透過部１０に対応して形成されて
おり、これらの収納凹部１３には赤色の発光ダイ
オード６がそれぞれ挿入配置されている。そし
て、各収納凹部１３の内底面には多数の小さな凸
レンズ１５が密集して形成されている。 The diode holding member 5 holds a light emitting diode 6
In addition to the function of holding the diode 6, it also has the function of guiding the light emitted from the diode 6 further and preventing light loss.For this purpose, it is formed into a roughly L-shape with a light guide made of transparent acrylic resin or the like. , whose end portion is fixed to the inner surface of the end portion of the front lens 3 with a set screw 12 . Further, a large number of storage recesses 13 are formed on the back side of the diode holding member 5, corresponding to each of the light transmitting parts 10 of the front lens 3, and each of these storage recesses 13 accommodates a red light emitting diode 6. Insert is placed. A large number of small convex lenses 15 are densely formed on the inner bottom surface of each storage recess 13.
前記各発光ダイオード６のリード線１４ａ，１
４ｂは、ダイオード保持部材５とバツクカバー２
との間に介装された回路基板７のリード線挿通孔
にそれぞれ挿通され、かつ該基板７の電気回路に
半田付け接続されている。回路基板７としては、
一般のガラスエポキシ樹脂またはベークライトか
ら成るプリント回路基板の使用も可能ではある
が、むしろこれよりもフレキシブル回路基板を使
用することが望ましく、そうすることにより基板
自体の可撓性を利用して発光ダイオード６の組付
け誤差を吸収し、収納凹部１３への挿入を容易に
すると同時に屈曲によつて生じる復元力の作用に
よつて発光ダイオード６を収納凹部１３の周面に
押し付けるため、該ダイオード６のガタ付きを防
止し、しかも一般の基板に比べて薄いため灯具の
厚みをより一層薄形化できる利点が期待される。 Lead wires 14a, 1 of each light emitting diode 6
4b is a diode holding member 5 and a back cover 2;
The lead wires are respectively inserted into the lead wire insertion holes of the circuit board 7 interposed between the lead wires and are connected to the electric circuit of the board 7 by soldering. As the circuit board 7,
Although it is possible to use a printed circuit board made of ordinary glass epoxy resin or Bakelite, it is preferable to use a flexible circuit board, so that the flexibility of the board itself can be used to connect light emitting diodes. In order to absorb assembly errors of the light emitting diode 6 and facilitate insertion into the storage recess 13, the light emitting diode 6 is pressed against the circumferential surface of the storage recess 13 by the restoring force generated by bending. It is expected to have the advantage of preventing wobbling and being thinner than ordinary substrates, making it possible to make lamps even thinner.
このような構成から成る尾灯において、発光ダ
イオード６を一斉に発光させると、赤色の光を発
し、前面レンズ３の光透過部１０を透過して外部
に出射し、該レンズ３を赤く照明する。また、ブ
レーキ時にはライトスイツチの切換えにより回路
抵抗が変化し、そのため発光ダイオード６は全て
同一の明るさでしかも通常発光時より明るく発光
し、後続車への注意を喚起する。 In the taillight having such a configuration, when the light emitting diodes 6 are made to emit light all at once, red light is emitted, which is transmitted through the light transmission section 10 of the front lens 3 and emitted to the outside, illuminating the lens 3 in red. Furthermore, when braking, the circuit resistance changes due to switching of the light switch, so that the light emitting diodes 6 all emit light of the same brightness and brighter than when normally emitting light, calling attention to following vehicles.
ここで、ある一つの発光ダイオード６に着目す
ると、その光の一部a1は前方に向つて進み、ダイ
オード保持部材５および前面レンズ３を透過して
当該ダイオードに対応する光透過部１０ａから外
部に出射する。この時、前記光a1は凸レンズ１５
および１１によつて屈折するため拡散されたり集
光したりする。一方、光の他の一部a2，a3はダイ
オード保持部材５内に入つてその臨界面で反射し
ながら進み、該保持部材５から出た後その一部が
前面レンズ３を透過し隣接する発光ダイオードに
対応する光透過部１０ｂ，１０ｃから外部に出射
する。また、光透過部１０ａには隣接する発光ダ
イオードからの光b1，c1が前述したと同様ダイオ
ード保持部材５を介して導かれる。したがつて、
発光ダイオード６の光は有効に利用されて損失が
少なく、各光透過部１０を明るく照明する。しか
も、発光ダイオード６から出て前方に向う光は凸
レンズ１５によつて拡散されるため、光透過部１
０を大きく形成しても、ダイオード自体の発光出
力の指向性にかかわらず光透過部１０の全面をほ
ぼ均一な明るさで照明する。 Here, when focusing on one light emitting diode 6, a part of the light a1 travels forward, passes through the diode holding member 5 and the front lens 3, and is transmitted from the light transmitting section 10a corresponding to the diode to the outside. emitted to. At this time, the light a 1 is transmitted through the convex lens 15
and 11, the light is diffused or condensed. On the other hand, the other part of the light a 2 and a 3 enters the diode holding member 5 and propagates while being reflected at its critical surface, and after leaving the holding member 5, a part of the light passes through the front lens 3 and is transmitted to the adjacent diode holding member 5. The light is emitted to the outside from the light transmitting parts 10b and 10c corresponding to the light emitting diodes. Furthermore, light b 1 and c 1 from adjacent light emitting diodes are guided to the light transmitting portion 10a via the diode holding member 5 as described above. Therefore,
The light from the light emitting diode 6 is effectively used, has little loss, and brightly illuminates each light transmitting section 10. Moreover, since the light emitted from the light emitting diode 6 and directed forward is diffused by the convex lens 15, the light transmitting portion 1
Even if 0 is formed to be large, the entire surface of the light transmitting part 10 is illuminated with substantially uniform brightness regardless of the directivity of the light emitting output of the diode itself.
第３図は本発明の他の実施例を示す要部拡大断
面図である。本実施例はダイオード保持部材５の
の表面全体に多数の小さな凸レンズ２０を密集し
て形成すると共に収納凹部１３の内底面中央に前
記ダイオード保持部材５の表面に開口する小径の
連通孔２１を形成し、またダイオード保持部材５
と回路基板７との間に、その表面側に回転放物面
から成る凹状の反射部２３が形成された反射部材
２２を介在させ、反射部２３の焦点位置に発光ダ
イオード６の半導体ペレツトを位置させたもので
あり、他の構成は上記実施例と同様である。発光
ダイオード６から出て反射部２３により反射した
光a5は平行光線となつてダイオード保持部材５内
に入射し、表面から出射する際凸レンズ２０によ
つて拡散または集光され、しかる後その部が前面
レンズ３を透過して光透過部１０より外部に出射
する。発光ダイオード６から出た光軸とほぼ平行
な光a1は連通孔２１を通過した後前面レンズ３を
透過して光透過部１０より外部に出射する。そし
て、発光ダイオード６から出てダイオード保持部
材５内に導かれた光のうち前方に向う光a2は連通
孔２１周りの凸レンズ２０部分より外部に出射
し、前面レンズ３を透過した後光透過部１０から
外部に出射する。 FIG. 3 is an enlarged sectional view of a main part showing another embodiment of the present invention. In this embodiment, a large number of small convex lenses 20 are densely formed on the entire surface of the diode holding member 5, and a small-diameter communication hole 21 that opens to the surface of the diode holding member 5 is formed at the center of the inner bottom surface of the storage recess 13. Also, the diode holding member 5
A reflecting member 22 having a concave reflecting portion 23 formed of a paraboloid of revolution is interposed on the front surface of the reflecting member 22 and the circuit board 7, and the semiconductor pellet of the light emitting diode 6 is positioned at the focal point of the reflecting portion 23. The other configurations are the same as those in the above embodiment. Light a 5 emitted from the light emitting diode 6 and reflected by the reflection section 23 becomes a parallel beam of light and enters the diode holding member 5. When it exits from the surface, it is diffused or condensed by the convex lens 20, and then that part The light passes through the front lens 3 and exits from the light transmitting section 10 to the outside. Light a 1 emitted from the light emitting diode 6 and substantially parallel to the optical axis passes through the communication hole 21 , passes through the front lens 3 , and exits from the light transmitting section 10 to the outside. Of the light emitted from the light emitting diode 6 and guided into the diode holding member 5, the forward light a2 is emitted to the outside from the convex lens 20 portion around the communication hole 21, and is transmitted through the front lens 3. The light is emitted from the section 10 to the outside.
このような構成においてもダイオード保持部材
５の表面に形成した凸レンズ２０により光を拡散
させているので、上記実施例と同様光透過部１０
を全面に亘つてほぼ均一に照明できることは容易
に理解されるであろう。 Even in this configuration, since the light is diffused by the convex lens 20 formed on the surface of the diode holding member 5, the light transmitting portion 10 is
It will be easily understood that the entire area can be illuminated almost uniformly.
第４図は本発明の他の実施例を示す要部拡大断
面図である。第１図および第２図に示した実施例
が収納凹部１３の内底面に多数の凸レンズを形成
して構成したのに対して、本実施例はダイオード
保持部材５の表面全体に多数の小さな凸レンズ２
０を形成したもので、その他の構成はほぼ同一で
ある。 FIG. 4 is an enlarged sectional view of a main part showing another embodiment of the present invention. While the embodiment shown in FIGS. 1 and 2 is constructed by forming a large number of convex lenses on the inner bottom surface of the storage recess 13, this embodiment has a large number of small convex lenses formed on the entire surface of the diode holding member 5. 2
0, and the other configurations are almost the same.
第５図は本発明の更に他の実施例を示す要部拡
大断面図である。本実施例は第１図および第２図
に示した実施例構造に加えてダイオード保持部材
５の表面で収納凹部１３に対応する箇所に１個の
大きな凸レンズ３０を形成し、この凸レンズ３０
と収納凹部１３内に形成された多数の小さな凸レ
ンズ１５とで発光ダイオード６から出た前方に向
う光を拡散させるようにしたものである。 FIG. 5 is an enlarged sectional view of a main part showing still another embodiment of the present invention. In addition to the structure of the embodiment shown in FIG. 1 and FIG.
The forward light emitted from the light emitting diode 6 is diffused by a large number of small convex lenses 15 formed in the housing recess 13.
なお、上記実施例はいずれも前面レンズ３に遮
光膜９を設けた場合について説明したが、かなら
ずしも必要ではない。 Although the above embodiments have all been described with respect to the case where the light shielding film 9 is provided on the front lens 3, it is not always necessary.
以上説明したように本発明に係る車輌用灯具
は、灯室内に配設された導光体から成るダイオー
ド保持部材の背面側に発光ダイオードを収納保持
する収納凹部を設け、かつこの収納凹部の内底面
もしくは少なくとも該凹部に対応するダイオード
保持部材の表面に発光ダイオードからの光を拡散
させるレンズを形成したので、発光ダイオード自
体の発光出力の指向性を制御することができ、し
たがつてレンズ全面の均一照明を実現でき、照明
効果を向上させる。
As explained above, the vehicle lamp according to the present invention is provided with a storage recess for storing and holding a light emitting diode on the back side of a diode holding member made of a light guide disposed in a lamp chamber, and a storage recess for storing and holding a light emitting diode. Since a lens that diffuses the light from the light emitting diode is formed on the bottom surface or at least on the surface of the diode holding member corresponding to the recess, the directivity of the light emitting output of the light emitting diode itself can be controlled, and therefore the entire surface of the lens can be controlled. It can achieve uniform illumination and improve the lighting effect.
第１図は本発明を自動車の尾灯に適用した場合
の一実施例を示す一部破断斜視図、第２図は要部
拡大断面図、第３図〜第５図はそれぞれ本発明の
他の実施例を示す要部拡大断面図である。
１……尾灯、２……バツクカバー、３……前面
レンズ、４……灯室、５……ダイオード保持部
材、６……発光ダイオード、７……回路基板、１
３……収納凹部、１５，２０，３０……凸レン
ズ。
FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention applied to an automobile tail light, FIG. 2 is an enlarged cross-sectional view of the main part, and FIGS. 3 to 5 show other embodiments of the present invention. FIG. 2 is an enlarged sectional view of a main part showing an example. DESCRIPTION OF SYMBOLS 1... Tail light, 2... Back cover, 3... Front lens, 4... Light chamber, 5... Diode holding member, 6... Light emitting diode, 7... Circuit board, 1
3... Storage recess, 15, 20, 30... Convex lens.
Claims (1)
ズと、前記灯室内に配設され前記前面レンズを照
明する多数の発光ダイオードと、同じく前記灯室
内に配設され各発光ダイオードを収納保持する収
納凹部を有する導光体から成るダイオード保持部
材とを備え、前記収納凹部の内底面もしくは少な
くとも該凹部に対応するダイオード保持部材の表
面に発光ダイオードからの光を拡散させるレンズ
を形成したことを特徴とする車輌用灯具。1. It has a front lens that forms a light chamber together with the back cover, a number of light emitting diodes disposed within the light chamber to illuminate the front lens, and a storage recess that is also disposed within the light chamber and stores and holds each light emitting diode. and a diode holding member made of a light guide, and a lens for diffusing light from the light emitting diode is formed on the inner bottom surface of the storage recess or at least on the surface of the diode holding member corresponding to the recess. Light equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59233273A JPS61114402A (en) | 1984-11-07 | 1984-11-07 | Lamp apparatus for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59233273A JPS61114402A (en) | 1984-11-07 | 1984-11-07 | Lamp apparatus for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61114402A JPS61114402A (en) | 1986-06-02 |
| JPS6366001B2 true JPS6366001B2 (en) | 1988-12-19 |
Family
ID=16952500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59233273A Granted JPS61114402A (en) | 1984-11-07 | 1984-11-07 | Lamp apparatus for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114402A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3428705B2 (en) * | 1993-10-20 | 2003-07-22 | キヤノン株式会社 | Position detecting device and method of manufacturing semiconductor device using the same |
| JP4345518B2 (en) * | 2004-02-18 | 2009-10-14 | 市光工業株式会社 | Vehicle lighting |
| US8047696B2 (en) * | 2006-10-16 | 2011-11-01 | Koninklijke Philips Electronics N.V. | Luminaire arrangement with cover layer |
-
1984
- 1984-11-07 JP JP59233273A patent/JPS61114402A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61114402A (en) | 1986-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH1031905A (en) | Marker lamp for vehicle | |
| JPH0374442B2 (en) | ||
| JP2001118411A (en) | Lamp for vehicle | |
| JPS61181002A (en) | Lighting apparatus | |
| JPS62229701A (en) | Lamp apparatus for vehicle | |
| EP3581846A2 (en) | Vehicular lamp | |
| JPS6366001B2 (en) | ||
| JPS61292801A (en) | Lighting apparatus | |
| JPH0374441B2 (en) | ||
| JPS636702A (en) | Lighting apparatus | |
| JP2000133013A (en) | Luminaire for vehicle using led as illuminant | |
| JPH0374444B2 (en) | ||
| JPH0371722B2 (en) | ||
| JPH0129926Y2 (en) | ||
| JPS6366002B2 (en) | ||
| JPH0343609Y2 (en) | ||
| JPS6366003B2 (en) | ||
| JPS61116701A (en) | Lamp apparatus for vehicle | |
| JPH0371721B2 (en) | ||
| JPH0371723B2 (en) | ||
| JPH0132248Y2 (en) | ||
| JPH0996551A (en) | Light emitting needle | |
| JPS61181001A (en) | Lighting apparatus | |
| JPH0343608Y2 (en) | ||
| JPS61183803A (en) | Lighting apparatus |