JP6054724B2 - Vehicle signal lights - Google Patents

Vehicle signal lights Download PDF

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JP6054724B2
JP6054724B2 JP2012266012A JP2012266012A JP6054724B2 JP 6054724 B2 JP6054724 B2 JP 6054724B2 JP 2012266012 A JP2012266012 A JP 2012266012A JP 2012266012 A JP2012266012 A JP 2012266012A JP 6054724 B2 JP6054724 B2 JP 6054724B2
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reflector
light
light source
opening
signal lamp
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JP2014112473A (en
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貞治 八田
貞治 八田
陽介 小池
陽介 小池
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Stanley Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection

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

Description

本発明は、車両後部に配置されるテールランプ等の車両用信号灯に関するものである。   The present invention relates to a signal lamp for a vehicle such as a tail lamp disposed at the rear of the vehicle.

例えば、車両後部に配置されるテールランプには、光軸に対して車両内側方向に４５°、車両外側方向に８０°の領域を所定の光度（例えば、０．０５ｃｄ）で照明することができる配光特性が要求される。このような配光特性を満足させるために、従来はインナレンズやアウタレンズ、或いはリフレクタに反射カットや屈折カットを施すことが行われている（例えば、特許文献１〜３参照）。ここで、従来の車両用信号灯の一例を図３に示す。   For example, a tail lamp arranged at the rear of the vehicle can illuminate an area of 45 ° in the vehicle inner direction and 80 ° in the vehicle outer direction with a predetermined luminous intensity (for example, 0.05 cd) with respect to the optical axis. Optical characteristics are required. In order to satisfy such a light distribution characteristic, a reflection cut and a refraction cut are conventionally performed on an inner lens, an outer lens, or a reflector (see, for example, Patent Documents 1 to 3). An example of a conventional vehicle signal lamp is shown in FIG.

即ち、図３は従来の車両用信号灯要部の側断面図であり、図示の車両用信号灯１０１は、光源であるＬＥＤ（発光ダイオード）１０２と、このＬＥＤ１０２から出射する光を反射させる椀状のリフレクタ１０３を備えている。ここで、リフフレクタ１０３は、ＬＥＤ１０２の付近に焦点を有する放物面系の反射面１０３ａを備えており、その反射面１０３ａの一部にはプリズム状の側方用カット１０３ｂが形成されている。尚、ＬＥＤ１０２はＬＥＤ基板１０５上に実装されている。   That is, FIG. 3 is a side sectional view of a main part of a conventional vehicle signal lamp. The illustrated vehicle signal lamp 101 is an LED (light emitting diode) 102 that is a light source and a bowl-like shape that reflects light emitted from the LED 102. A reflector 103 is provided. Here, the reflector 103 includes a parabolic reflecting surface 103a having a focal point in the vicinity of the LED 102, and a prism-shaped side cut 103b is formed on a part of the reflecting surface 103a. The LED 102 is mounted on the LED substrate 105.

斯かる車両用信号灯１０１において、ＬＥＤ１０２が起動されてこれが発光すると、大部分の光Ｌ１は、リフレクタ１０３の反射面１０３ａで反射してメイン配光（平行光）として図３の上方へ向かい、一部の光Ｌ２は、側方用カット１０３ｂで反射して光軸に対して側方に８０°方向の光（８０°方向配光）として車両の外側方に向かう。   In such a vehicle signal lamp 101, when the LED 102 is activated and emits light, most of the light L1 is reflected by the reflecting surface 103a of the reflector 103 and travels upward in FIG. 3 as main light distribution (parallel light). The light L2 of the part is reflected by the side cut 103b and travels outward of the vehicle as light in the direction of 80 ° (80 ° direction light distribution) to the side with respect to the optical axis.

実開平６−０６８２１３号公報Japanese Utility Model Publication No. 6-068213 特開２０１０−１９９０５３号公報JP 2010-199053 A 特開２０１２−１７４５４０号公報JP 2012-174540 A

しかしながら、図３に示す従来の車両用信号灯１０１において、リフレクタ１０３の成形時にその反射面１０３ａの一部にプリズム状の側方用カット１０３ｂを形成するには、スライド型が別途必要となるために型構造が複雑化し、製造コストが高くなるという問題がある。   However, in the conventional vehicular signal light 101 shown in FIG. 3, a separate slide mold is required to form the prism-shaped side cut 103b on a part of the reflecting surface 103a when the reflector 103 is formed. There is a problem that the mold structure becomes complicated and the manufacturing cost becomes high.

本発明は上記観点に鑑みてなされたもので、その目的とする処は、低コストで簡単に製造されて所望の側方配光特性を満足することができる車両用信号灯を提供することにある。   The present invention has been made in view of the above viewpoints, and an object thereof is to provide a vehicular signal lamp that can be easily manufactured at low cost and can satisfy desired side light distribution characteristics. .

上記目的を達成するため、請求項１記載の発明は、光源と、該光源からの光を反射させるリフレクタを備える車両用信号灯において、前記リフレクタを透明な導光体から成る成形体で椀状に構成し、前記リフレクタには、前記光源が配置される孔と、該孔と異なる位置に設けた開口部が形成され、前記孔の端面は、前記光源に対向し、前記開口部の周縁の一部には、外側方に向かって広がる斜面状の反射面が形成されており、前記開口部の周縁の反射面は、前記光源からの放射光の一部が前記リフレクタで反射した後に前記開口部を通過して到達する位置で、且つ、前記リフレクタを成形する際にアンダーカットとならない位置に形成されており、前記光源からの放射光のうちの一部は、前記開口部の周縁の反射面にて反射した光が、車両の外側方に向かい、前記光源からの放射光のうちの一部は、前記孔の端面から入射して前記リフレクタの他端面から出射することを特徴とする。
In order to achieve the above object, according to a first aspect of the present invention, there is provided a vehicular signal lamp including a light source and a reflector that reflects light from the light source. The reflector is formed into a bowl shape with a molded body made of a transparent light guide. The reflector is provided with a hole in which the light source is disposed and an opening provided at a position different from the hole, and an end surface of the hole is opposed to the light source and is a part of a periphery of the opening. The part is formed with a slope-like reflecting surface that spreads outward, and the reflecting surface at the periphery of the opening is formed by reflecting the part of the radiated light from the light source after the reflector reflects the opening. Is formed at a position that does not cause an undercut when the reflector is formed, and a part of the emitted light from the light source is a reflection surface at the periphery of the opening. The light reflected by the Toward the side, a part of the light emitted from the light source is characterized by emitting incident from an end face of the hole from the other end face of the reflector.

請求項２記載の発明は、請求項１記載の発明において、前記基板が前記リフレクタの後面側に位置することを特徴とする。
According to a second aspect of the present invention, in the first aspect of the present invention, the substrate is located on a rear surface side of the reflector .

本発明によれば、光源から出射した光のうち、リフレクタの開口部を通過した光は、リフレクタの外面の開口部周縁に形成された反射面で反射して外側方に向かうため、当該車両用信号灯に要求される側方配光特性を満足することができる。そして、開口部が形成されるリフレクタの型成形においては、開口部がアンダーカットとならないために型を一方向に抜くことができる。このため、リフレクタの成形にスライド型が不要となり、型構造が単純化して製造コストが低く抑えられる。
According to the present invention, among the light emitted from the light source, the light that has passed through the opening of the reflector is reflected by the reflecting surface formed on the periphery of the opening on the outer surface of the reflector and travels outward. Side light distribution characteristics required for signal lights can be satisfied. And in the shaping | molding of the reflector in which an opening part is formed, since an opening part does not become an undercut, a type | mold can be extracted in one direction. This eliminates the need for a slide mold for molding the reflector, simplifies the mold structure, and reduces manufacturing costs.

又、リフレクタを透明な導光体で構成するとともに、その端面を除く内外面を反射面としたため、リフレクタの光源に対向する一端面から該リフレクタ内に入射した光は、全反射しながらリフレクタ内を進み、該リフレクタの他端面から出射するため、リフレクタの端部周縁が光り、特徴的な意匠を演出することができる。
 In addition, since the reflector is composed of a transparent light guide and the inner and outer surfaces except for the end surfaces are reflecting surfaces, the light incident on the reflector from one end surface facing the light source of the reflector is totally reflected and reflected in the reflector. Since the light is emitted from the other end face of the reflector, the peripheral edge of the reflector shines and a characteristic design can be produced.

本発明に係る車両用信号灯要部の正面図である。It is a front view of the signal lamp principal part for vehicles concerning the present invention. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 従来の車両用信号灯要部の側断面図である。It is a sectional side view of the conventional vehicle signal lamp main part.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る車両用信号灯要部の正面図、図２は図１のＡ−Ａ線断面図であり、図示の車両用信号灯１は車両後部に配置されるテールランプである。   FIG. 1 is a front view of an essential part of a vehicle signal lamp according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and the illustrated vehicle signal lamp 1 is a tail lamp disposed at the rear of the vehicle.

図示の車両用信号灯１は、図２に示すように、光源であるＬＥＤ２と、このＬＥＤ２から出射する光を反射させる椀状のリフレクタ３を備えている。ここで、リフレクタ３の中心部には円孔４が形成されており、この円孔４の中心に前記ＬＥＤ２が配置されている。尚、ＬＥＤ２はＬＥＤ基板５上に実装されている。   As illustrated in FIG. 2, the illustrated vehicle signal lamp 1 includes an LED 2 that is a light source and a bowl-shaped reflector 3 that reflects light emitted from the LED 2. Here, a circular hole 4 is formed at the center of the reflector 3, and the LED 2 is disposed at the center of the circular hole 4. The LED 2 is mounted on the LED substrate 5.

ところで、本実施の形態では、リフレクタ３は透明な導光体で構成されており、その内面はＬＥＤ２の付近に焦点を有する放物面系の反射面３ａを構成しており、この反射面３ａにはアルミ蒸着が施されている。そして、このリフレクタ３の一部には、矩形の開口部３Ａが形成されており、リフレクタ３の外面の開口部３Ａの周縁の一部には、外側方に向かって広がる斜面状の反射面３ｂが形成されており、この反射面３ｂを含むリフレクタ３の外面にはアルミ蒸着が施されている。但し、リフレクタ３のＬＥＤ２に対向する端面３ｃ（円孔４の内周面）と開口端面３ｄにはアルミ蒸着が施されていない。従って、リフレクタ３の開口部３Ａと端面３ｃ，３ｄを除く内面と外面にはアルミ蒸着が施されており、この部分は全体として反射面を構成している。   By the way, in this Embodiment, the reflector 3 is comprised with the transparent light guide, and the inner surface comprises the parabolic reflecting surface 3a which has a focus in the vicinity of LED2, This reflecting surface 3a Has been subjected to aluminum vapor deposition. A rectangular opening 3A is formed in a part of the reflector 3, and a slant-like reflecting surface 3b spreading outward is formed in a part of the periphery of the opening 3A on the outer surface of the reflector 3. The outer surface of the reflector 3 including the reflecting surface 3b is subjected to aluminum vapor deposition. However, aluminum vapor deposition is not performed on the end surface 3c (inner peripheral surface of the circular hole 4) and the open end surface 3d of the reflector 3 facing the LED 2. Therefore, aluminum deposition is performed on the inner surface and the outer surface except for the opening 3A and the end surfaces 3c and 3d of the reflector 3, and this portion constitutes the reflecting surface as a whole.

尚、以上は車両用信号灯１を構成する主要部の構成のみについて説明したが、実際の車両用信号灯１は、ハウジングとその開口部を覆うレンズ（共に不図示）によって画成された灯室内に前記ＬＥＤ２やリフレクタ３を収容して構成されている。   Although only the configuration of the main part constituting the vehicular signal lamp 1 has been described above, the actual vehicular signal lamp 1 is disposed in a lamp chamber defined by a housing and a lens (both not shown) covering the opening. The LED 2 and the reflector 3 are accommodated.

以上のように構成された車両用信号灯１において、ＬＥＤ２が起動されてこれが発光すると、大部分の光Ｌ１は、リフレクタ３の反射面３ａで反射してメイン配光（平行光）として図２の上方へ向かい、一部の光Ｌ２は、リフレクタ３の反射面３ａで反射した後に開口部３Ａを通過し、開口部３Ａの周縁の一部に形成された反射面３ｂで反射して光軸に対して側方に８０°方向の光（８０°方向配光）として車両の外側方に向かい、車両外側方向に８０°の領域を所定の光度（例えば、０．０５ｃｄ）で照明する。   In the vehicular signal lamp 1 configured as described above, when the LED 2 is activated and emits light, most of the light L1 is reflected by the reflecting surface 3a of the reflector 3 to be main light distribution (parallel light) as shown in FIG. Heading upward, a part of the light L2 is reflected by the reflecting surface 3a of the reflector 3, passes through the opening 3A, is reflected by the reflecting surface 3b formed at a part of the periphery of the opening 3A, and is reflected on the optical axis. On the other hand, 80 ° direction light (80 ° direction light distribution) is directed to the outside of the vehicle, and the 80 ° region is illuminated with a predetermined luminous intensity (eg, 0.05 cd).

以上のように、本実施の形態では、ＬＥＤ２から出射した光のうち、リフレクタ３の開口部３Ａを通過した光Ｌ２は、リフレクタ３の外面の開口部３Ａの周縁に形成された反射面３ｂで反射して外側方に向かうため、当該車両用信号灯１に要求される側方配光特性を満足することができる。そして、開口部３Ａが形成されるリフレクタ３の型成形においては、開口部３Ａがアンダーカットとならないために型を一方向に抜くことができる。このため、リフレクタ３の成形にスライド型が不要となり、型構造が単純化して製造コストが低く抑えられる。   As described above, in the present embodiment, the light L2 that has passed through the opening 3A of the reflector 3 out of the light emitted from the LED 2 is reflected by the reflecting surface 3b formed at the periphery of the opening 3A on the outer surface of the reflector 3. Since it reflects and goes outside, the side light distribution characteristic requested | required of the said signal lamp 1 for vehicles can be satisfied. And in the shaping | molding of the reflector 3 in which the opening part 3A is formed, since the opening part 3A is not undercut, the mold can be pulled out in one direction. For this reason, a slide mold is not required for molding the reflector 3, the mold structure is simplified, and the manufacturing cost is kept low.

又、本実施の形態では、リフレクタ３を透明な導光体で構成するとともに、その端面３ｃ，３ｄを除く内外面を反射面としたため、リフレクタ３のＬＥＤ２に対向する一端面３ｃから該リフレクタ３内に入射した光Ｌ３は、図２に示すように全反射しながらリフレクタ３内を進み、該リフレクタ３の他端面３ｄから出射するため、リフレクタ３の端部周縁が光り、特徴的な意匠を演出することができるという効果も得られる。   In the present embodiment, the reflector 3 is formed of a transparent light guide, and the inner and outer surfaces except for the end surfaces 3c and 3d are reflective surfaces. Therefore, the reflector 3 starts from the one end surface 3c facing the LED 2 of the reflector 3. As shown in FIG. 2, the light L3 incident on the inside travels through the reflector 3 while being totally reflected, and exits from the other end surface 3d of the reflector 3, so that the edge of the end of the reflector 3 shines, giving a characteristic design. The effect that it can produce is also acquired.

尚、以上は本発明をテールランプに対して適用した形態について説明したが、本発明は、ストップランプ等の他の任意の車両用信号灯に対しても同様に適用可能であることは勿論である。又，以上の実施の形態では、光源としてＬＥＤを使用した車両用信号灯について説明したが、本発明は、ＬＥＤ以外のバルブ等を光源とする車両用信号灯に対しても同様に適用可能である。   Although the present invention has been described with respect to a form in which the present invention is applied to a tail lamp, it is needless to say that the present invention can be similarly applied to other arbitrary vehicle signal lights such as a stop lamp. In the above embodiment, a vehicle signal lamp using an LED as a light source has been described. However, the present invention is also applicable to a vehicle signal lamp using a bulb or the like other than an LED as a light source.

１ 車両用信号灯
２ ＬＥＤ（光源）
３ リフレクタ
３Ａ リフレクタの開口部
３ａ，３ｂ リフレクタの反射面
３ｃ，３ｄ リフレクタの探検
４ 円孔
５ ＬＥＤ基板
Ｌ１〜Ｌ３ 光
1 Vehicle signal light 2 LED (light source)
DESCRIPTION OF SYMBOLS 3 Reflector 3A Reflector opening 3a, 3b Reflector reflective surface 3c, 3d Reflector exploration 4 Circular hole 5 LED board L1-L3 Light

Claims (2)

光源と、該光源からの光を反射させるリフレクタを備える車両用信号灯において、
前記リフレクタを透明な導光体から成る成形体で椀状に構成し、
前記リフレクタには、前記光源が配置される孔と、該孔と異なる位置に設けた開口部が形成され、
前記孔の端面は、前記光源に対向し、
前記開口部の周縁の一部には、外側方に向かって広がる斜面状の反射面が形成されており、
前記開口部の周縁の反射面は、前記光源からの放射光の一部が前記リフレクタで反射した後に前記開口部を通過して到達する位置で、且つ、前記リフレクタを成形する際にアンダーカットとならない位置に形成されており、
前記光源からの放射光のうちの一部は、前記開口部の周縁の反射面にて反射した光が、車両の外側方に向かい、
前記光源からの放射光のうちの一部は、前記孔の端面から入射して前記リフレクタの他端面から出射することを特徴とする車両用信号灯。 In a vehicle signal lamp comprising a light source and a reflector that reflects light from the light source,
The reflector is formed in a bowl shape with a molded body made of a transparent light guide,
The reflector is formed with a hole in which the light source is disposed and an opening provided at a position different from the hole,
The end face of the hole faces the light source,
A part of the periphery of the opening is formed with a sloped reflecting surface that spreads outward.
The reflection surface at the periphery of the opening is a position where a part of the radiated light from the light source is reflected by the reflector and then reaches through the opening, and is undercut when the reflector is molded. It is formed at a position that does not become
A part of the radiated light from the light source is reflected by the reflection surface at the periphery of the opening, and is directed outward of the vehicle.
A part of the radiated light from the light source is incident on the end surface of the hole and is emitted from the other end surface of the reflector . 前記光源が基板上に実装されたＬＥＤであり、
前記基板が前記リフレクタの後面側に位置することを特徴とする請求項１記載の車両用信号灯。
 The light source is an LED mounted on a substrate;
2. The vehicular signal lamp according to claim 1, wherein the substrate is located on a rear surface side of the reflector .
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FR3085638A1 (en) * 2018-09-07 2020-03-13 Psa Automobiles Sa LIGHTING DEVICE WITH SINGLE PHOTON SOURCE PROVIDING TWO DIFFERENT PHOTOMETRIC FUNCTIONS

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JPS583202Y2 (en) * 1978-03-02 1983-01-20 サンデン株式会社 bicycle headlight
JP3195294B2 (en) * 1998-08-27 2001-08-06 スタンレー電気株式会社 Vehicle lighting

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