JPH09106703A - Lighting fixture for vehicle - Google Patents
Lighting fixture for vehicleInfo
- Publication number
- JPH09106703A JPH09106703A JP7265107A JP26510795A JPH09106703A JP H09106703 A JPH09106703 A JP H09106703A JP 7265107 A JP7265107 A JP 7265107A JP 26510795 A JP26510795 A JP 26510795A JP H09106703 A JPH09106703 A JP H09106703A
- Authority
- JP
- Japan
- Prior art keywords
- light
- incident
- light emitting
- emitting source
- inner lens
- 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
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、インナーレンズを
有する車両用灯具の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicular lamp having an inner lens.
【０００２】[0002]
【従来の技術】従来から、図１に示すように、インナー
レンズ１を有する車両用灯具２が知られている。そのイ
ンナーレンズ１は、その中央部４に発光源３からの直射
光を屈折させて外方に導くための断面直角三角形状の複
数個の屈折角部４´が等ピッチで設けられ、その周辺部
５に発光源３からの直射光Ｐ１が入射する入射面５ａと
この入射面５ａに入射した直射光Ｐ１を反射して外方に
導く断面二等辺三角形状の反射面５ｂとを有する複数個
の反射角部５´が等ピッチで設けられている。2. Description of the Related Art Conventionally, a vehicular lamp 2 having an inner lens 1 as shown in FIG. 1 has been known. The inner lens 1 has a plurality of refraction angle portions 4'having a right-angled triangular cross section for refracting the direct light from the light emitting source 3 and guiding the light outward from the central portion 4 at equal pitches. A plurality of portions having an incident surface 5a on which the direct light P1 from the light emitting source 3 is incident on the portion 5 and a reflecting surface 5b having an isosceles triangular cross section that reflects the direct light P1 incident on the incident surface 5a and guides it to the outside. The reflective corner portions 5'are provided at equal pitches.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この従
来の車両用灯具では、反射角部５´が発光源３から遠く
なればなるほど、その反射角部５´の入射面５ａに入射
する直射光Ｐ１の入射面積Ｓが小さくなり、従って、発
光源３から遠い周辺部５ほど暗く見えるという不都合が
ある。そこで、図２に示すように、インナーレンズ１に
反射鏡７を臨ませて設け、その反射鏡７の焦点Ｆに発光
源３を設け、発光源３からの発光光束Ｐ２を光軸Ｏと平
行な反射光束Ｐ３に変換して外部に導くことが考えられ
ている。この反射鏡７を設ける構成とすれば、発光源３
から遠い周辺部５ほど暗く見えるという不都合の多少の
改善を図ることができるが、反射鏡７により平行に反射
された反射光束Ｐ３が入射面５ａ又は反射面５ｂによっ
て不規則な反射・屈折を受けることになるので、発光源
３から遠い周辺部５ほど暗く見えるという不都合を抜本
的に解決できない。However, in this conventional vehicular lamp, as the reflection angle portion 5'is farther from the light emitting source 3, the direct light P1 incident on the incident surface 5a of the reflection angle portion 5 '. The incident area S of is small, and therefore the peripheral portion 5 farther from the light emitting source 3 looks darker. Therefore, as shown in FIG. 2, the reflecting mirror 7 is provided facing the inner lens 1, the light emitting source 3 is provided at the focal point F of the reflecting mirror 7, and the luminous flux P2 emitted from the light emitting source 3 is parallel to the optical axis O. It is considered that the reflected light flux P3 is converted into a reflected light flux P3 and guided to the outside. If the reflecting mirror 7 is provided, the light emitting source 3
Although it is possible to improve the inconvenience that the peripheral portion 5 farther away from the object becomes darker, the reflected light beam P3 reflected in parallel by the reflecting mirror 7 is irregularly reflected and refracted by the incident surface 5a or the reflective surface 5b. Therefore, the inconvenience that the peripheral portion 5 farther from the light emitting source 3 looks darker cannot be fundamentally solved.
【０００４】本発明は、上記の事情に鑑みて為されたも
ので、インナーレンズの発光源から遠い箇所に存在する
周辺部の明るさの向上を図り、もって、配光の改善を図
ることのできる車両用灯具を提供する。The present invention has been made in view of the above circumstances, and it is possible to improve the brightness of the peripheral portion existing far from the light emitting source of the inner lens, thereby improving the light distribution. Provided is a vehicular lamp that can be used.
【０００５】[0005]
【課題を解決するための手段】本発明に係わる車両用灯
具は、上記の課題を解決するため、発光源がその焦点に
設けられて該発光源からの発光光束を光軸と平行な反射
光束に変換する反射鏡にインナーレンズが臨まされ、該
インナーレンズにはその中央部に前記発光源からの直射
光を屈折させて外方に導くために複数個の屈折角部が設
けられ、その周辺部には前記発光源からの直射光が入射
する入射面と該入射面に入射した直射光を反射して外方
に導く反射面とを有する反射角部が複数個設けられ、互
いに隣接する反射角部の間は前記反射鏡からの平行光束
をそのまま通過させる平面部となっていることを特徴と
する。In order to solve the above-mentioned problems, a vehicular lamp according to the present invention is provided with a light emitting source provided at its focal point, and a luminous flux emitted from the light emitting source is a reflected luminous flux parallel to the optical axis. The inner lens is exposed to the reflecting mirror that converts the light into light, and the inner lens is provided with a plurality of refraction angle portions for refracting the direct light from the light emitting source and guiding the light to the outside in the central portion, and the periphery thereof. The portion is provided with a plurality of reflection corner portions having an incident surface on which the direct light from the light emitting source is incident and a reflecting surface for reflecting the direct light incident on the incident surface and guiding the light to the outside, and adjacent reflection angles. A space between the corners is a flat surface through which the parallel light flux from the reflecting mirror passes as it is.
【０００６】[0006]
【作用】本発明に係わる車両用灯具によれば、発光源か
らの発光光束のうち反射鏡に向かう発光光束はその反射
鏡により反射されて光軸と平行な平行光束となり、イン
ナーレンズに導かれる。この平行光束のうち平面部に直
接向かう平行光束は、反射角部による反射・屈折を受け
ずにそのまま外部に出射するので、インナーレンズの発
光源から遠い箇所に存在する周辺部の明るさの向上を期
待できる。According to the vehicular lamp of the present invention, of the luminous flux emitted from the light source, the luminous flux directed to the reflecting mirror is reflected by the reflecting mirror to become a parallel luminous flux parallel to the optical axis and is guided to the inner lens. . Of these parallel light beams, the parallel light beam that goes directly to the flat surface is directly output to the outside without being reflected or refracted by the reflection angle portion, so that the brightness of the peripheral portion existing far from the light source of the inner lens is improved. Can be expected.
【０００７】[0007]
【発明の実施の形態】図３、図４は本発明に係わる車両
用灯具１０の一実施形態を示し、この図３、図４におい
て、１１はアウターレンズ、１２は反射鏡、１３は発光
源である。この反射鏡１２はここでは放物面鏡である
が、これに限るものではない。発光源１３は反射鏡１２
の光軸Ｏ上に存在する焦点Ｆに設けられている。発光源
１３から出射されて反射鏡１２の反射面１２ａに向かっ
た発光光束Ｐ２は、その反射面１２ａによって光軸Ｏと
平行な反射光束Ｐ３に変換される。反射鏡１２にはイン
ナーレンズ１４が臨まされて設けられている。インナー
レンズ１４は、その中央部１５に発光源１３からの直射
光Ｐ１を屈折させて外方に導くために断面直角三角形状
の複数個の屈折角部１５ａが等ピッチで設けられ、その
周辺部１６に発光源１３からの直射光Ｐ１が入射する入
射面１６ａとこの入射面１６ａに入射した直射光Ｐ１を
反射して外方に導く反射面１６ｂとを有する反射角部１
６ｃが複数個設けられている。この反射角部１６ｃの頂
部１７は等ピッチで形成され、反射角部１６ｃの頂部１
７の高さは同一である。互いに隣接する反射角部１６
ｃ、１６ｃの間は反射鏡１２からの反射光束Ｐ３をその
まま透過させる平面部１６ｄとなっている。この平面部
１６ｄの面積は発光源１３から遠くなるに伴ってその面
積が大きくなっている。3 and 4 show an embodiment of a vehicular lamp 10 according to the present invention. In FIGS. 3 and 4, 11 is an outer lens, 12 is a reflecting mirror, and 13 is a light emitting source. Is. The reflecting mirror 12 is a parabolic mirror here, but is not limited to this. The light source 13 is a reflecting mirror 12.
It is provided at a focal point F existing on the optical axis O of. The luminous flux P2 emitted from the light emitting source 13 and directed to the reflecting surface 12a of the reflecting mirror 12 is converted by the reflecting surface 12a into a reflected luminous flux P3 parallel to the optical axis O. An inner lens 14 is provided facing the reflecting mirror 12. The inner lens 14 is provided with a plurality of refraction angle portions 15a having a right-angled triangular cross section at equal pitches in a central portion 15 thereof for refracting the direct light P1 from the light emitting source 13 and guiding the light P1 to the outside. A reflection corner portion 1 having an incident surface 16a on which the direct light P1 from the light emitting source 13 is incident on 16 and a reflecting surface 16b which reflects the direct light P1 incident on the incident surface 16a and guides it to the outside.
A plurality of 6c are provided. The top portions 17 of the reflection corner portions 16c are formed at equal pitches, and the top portions 1 of the reflection corner portions 16c are formed.
The height of 7 is the same. Reflection corners 16 adjacent to each other
Between c and 16c is a flat portion 16d that allows the reflected light beam P3 from the reflecting mirror 12 to pass through as it is. The area of the flat portion 16d increases as the distance from the light emitting source 13 increases.
【０００８】この発明の実施の形態によれば、反射鏡１
２により反射されて光軸Ｏと平行にされた反射光束Ｐ３
のうち平面部１２ｄに直接向かう反射光束Ｐ３は、反射
角部１６ｃ、１６ｃによる反射・屈折を受けずにそのま
ま透過して外部に出射することになるので、反射角部１
６ｃの入射面１６ａに入射する直射光Ｐ１の入射面積Ｓ
が小さくなったとしても、その入射面積Ｓの減少に伴う
光量低下を補償でき、インナーレンズ１４の発光源１３
から遠い箇所に存在する周辺部１６の明るさの向上を期
待できる。According to the embodiment of the present invention, the reflecting mirror 1
Reflected light beam P3 reflected by 2 and made parallel to the optical axis O
The reflected light beam P3 that directly travels to the flat surface portion 12d of the reflection angle portions 16c and 16c does not undergo reflection and refraction by the reflection angle portions 16c and is directly transmitted and emitted to the outside.
Incident area S of the direct light P1 incident on the incident surface 16a of 6c
Even if the incident light becomes small, it is possible to compensate for the decrease in the light amount due to the decrease in the incident area S, and the light source 13
It can be expected that the brightness of the peripheral portion 16 existing at a position far from is improved.
【０００９】[0009]
【発明の効果】本発明に係わる車両用灯具によれば、発
光源からの発光光束のうち反射鏡に向かう発光光束はそ
の反射鏡により反射されて光軸と平行な平行光束とな
り、インナーレンズに導かれる。この平行光束のうち平
面部に直接向かう平行光束は、反射角部による反射・屈
折を受けずにそのまま外部に出射するので、インナーレ
ンズの発光源から遠い箇所に存在する周辺部の明るさの
向上を期待できる。According to the vehicular lamp according to the present invention, of the luminous flux emitted from the light source, the luminous flux directed to the reflecting mirror is reflected by the reflecting mirror to become a parallel luminous flux which is parallel to the optical axis, and is directed to the inner lens. Be guided. Of these parallel light beams, the parallel light beam that goes directly to the flat surface is directly output to the outside without being reflected or refracted by the reflection angle part, so that the brightness of the peripheral part existing far from the light source of the inner lens is improved. Can be expected.
【図１】 従来の車両用灯具の不具合の一例を説明する
ための部分断面図である。FIG. 1 is a partial cross-sectional view for explaining an example of a problem of a conventional vehicle lamp.
【図２】 従来の車両用灯具の不具合の他の例を説明す
るための部分断面図である。FIG. 2 is a partial cross-sectional view for explaining another example of the problem of the conventional vehicle lamp.
【図３】 本発明に係わる車両灯具の一例を示す正面図
である。FIG. 3 is a front view showing an example of a vehicle lamp according to the present invention.
【図４】 本発明に係わる車両用灯具の一例を示す部分
断面図であって、図３のＡ−Ａ線に沿う断面図である。FIG. 4 is a partial cross-sectional view showing an example of the vehicular lamp according to the present invention, which is a cross-sectional view taken along the line AA of FIG.
１２…反射鏡 １３…発光源 １４…インナーレンズ １５…中央部 １５ａ…屈折角部 １６…周辺部 １６ａ…入射面 １６ｂ…反射面 １６ｃ…反射角部 １６ｄ…平面部 Ｆ…焦点 Ｏ…光軸 Ｐ１…直射光 Ｐ２…発光光束 Ｐ３…反射光束 12 ... Reflecting mirror 13 ... Light source 14 ... Inner lens 15 ... Center part 15a ... Refraction angle part 16 ... Peripheral part 16a ... Incident surface 16b ... Reflection surface 16c ... Reflection angle part 16d ... Plane part F ... Focus O ... Optical axis P1 ... Direct light P2 ... Emitted light flux P3 ... Reflected light flux
Claims (1)
からの発光光束を光軸と平行な反射光束に変換する反射
鏡にインナーレンズが臨まされ、該インナーレンズには
その中央部に前記発光源からの直射光を屈折させて外方
に導くために複数個の屈折角部が設けられ、その周辺部
には前記発光源からの直射光が入射する入射面と該入射
面に入射した直射光を反射して外方に導く反射面とを有
する反射角部が複数個設けられ、互いに隣接する反射角
部の間は前記反射鏡からの平行光束をそのまま通過させ
る平面部となっていることを特徴とする車両用灯具。1. An inner lens is exposed to a reflecting mirror which is provided with a light emitting source at its focal point and converts a light beam emitted from the light source into a reflected light beam parallel to the optical axis, and the inner lens is provided at the center of the inner lens. A plurality of refraction angle portions are provided for refracting the direct light from the light emitting source and guiding the light to the outside, and an incident surface on which the direct light from the light emitting source is incident and incident on the incident surface in the peripheral portion thereof. A plurality of reflection angle portions having a reflection surface that reflects the direct light and guides the light to the outside are provided, and between the reflection angle portions adjacent to each other, there is a flat surface portion through which the parallel light flux from the reflecting mirror passes as it is. A vehicle lighting device characterized by being
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7265107A JPH09106703A (en) | 1995-10-13 | 1995-10-13 | Lighting fixture for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7265107A JPH09106703A (en) | 1995-10-13 | 1995-10-13 | Lighting fixture for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09106703A true JPH09106703A (en) | 1997-04-22 |
Family
ID=17412709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7265107A Pending JPH09106703A (en) | 1995-10-13 | 1995-10-13 | Lighting fixture for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09106703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8158337B2 (en) | 2004-05-31 | 2012-04-17 | Sekonix Co., Ltd. | Display device uniforming light distribution throughout areas and method for manufacturing same |
| JP2012209111A (en) * | 2011-03-29 | 2012-10-25 | Ichikoh Ind Ltd | Vehicular lamp |
-
1995
- 1995-10-13 JP JP7265107A patent/JPH09106703A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8158337B2 (en) | 2004-05-31 | 2012-04-17 | Sekonix Co., Ltd. | Display device uniforming light distribution throughout areas and method for manufacturing same |
| JP2012209111A (en) * | 2011-03-29 | 2012-10-25 | Ichikoh Ind Ltd | Vehicular lamp |
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