JPH0272502A - Headlight - Google Patents
HeadlightInfo
- Publication number
- JPH0272502A JPH0272502A JP63224309A JP22430988A JPH0272502A JP H0272502 A JPH0272502 A JP H0272502A JP 63224309 A JP63224309 A JP 63224309A JP 22430988 A JP22430988 A JP 22430988A JP H0272502 A JPH0272502 A JP H0272502A
- Authority
- JP
- Japan
- Prior art keywords
- light
- high beam
- liquid crystal
- crystal screen
- converging 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
Classifications
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
- F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
- F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はヘッドライトに関し、特に自動車などに使用さ
れる放射光束の切替え可能なヘッドライトに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a headlight, and more particularly to a headlight whose emitted light flux can be switched for use in automobiles and the like.
第２図は従来のヘッドライトの一例を示す断面図である
。FIG. 2 is a sectional view showing an example of a conventional headlight.
自動車などに使用される放射光束の切替え可能な従来の
ヘッドライトは、第２図に示すように、ロービーム用フ
ィラメント２１およびハイビーム用フィラメント２２を
有している。2. Description of the Related Art Conventional headlights used in automobiles and the like whose emitted light flux can be switched have a low beam filament 21 and a high beam filament 22, as shown in FIG.
そして、ロービーム用フィラメント２１には、下方への
光を遮るためにロービーム遮光板２３を有している。The low beam filament 21 has a low beam shielding plate 23 for blocking downward light.
このため、ロービーム用フィラメント２１の光は、上方
への光だけとなり、反射面２４に反射して、前方の広い
範囲に分散させる第１の集光レンズ部２５を透過して、
ロービームとなる。Therefore, the light from the low beam filament 21 is only directed upward, is reflected on the reflective surface 24, and is transmitted through the first condensing lens section 25, which disperses it over a wide range in front.
Low beam.
一方、ハイビーム用フィラメント２２を点灯することに
より、ハイビーム用フィラメント２２の光は、下方へも
送られるので、反射面２４に反射して、前方の狭い範囲
に収束させる第２の集光レンズ部２６を透過して、ハイ
ビームを形成することができる。On the other hand, by lighting the high beam filament 22, the light from the high beam filament 22 is also sent downward, so it is reflected on the reflective surface 24 and converged in a narrow area in front of the second condenser lens section 26. can be transmitted to form high beams.
上述した従来のヘッドライトは、放射光束の切替えのた
めに、ロービーム用フィラメントおよびハイビーム用フ
ィラメントを必要とし、これらを点滅するために、電流
容量の大きい継電器も、２個を必要とするという欠点が
ある。The conventional headlights described above require a low beam filament and a high beam filament to switch the emitted light flux, and have the disadvantage that two relays with large current capacity are required to blink them. be.
本発明の目的は、集光レンズ面に液晶スクリーンを配置
して、液晶スクリーンにおける光の透過性を制御するこ
とにより、一つの発光用フィラメントでロービームとハ
イビームとを切替えることができるヘッドライトを提供
することにある。An object of the present invention is to provide a headlight that can switch between low beam and high beam with a single light-emitting filament by arranging a liquid crystal screen on the condensing lens surface and controlling the transmittance of light on the liquid crystal screen. It's about doing.
本発明のヘッドライトは、
（Ａ）光を発生するフィラメントなどの発光体、（Ｂ）
前記発光体から後方へ送られる光を反射して前方に送る
反射面、
（Ｃ）前記発光体および前記反射面から前方へ送られる
光を透過して、前方の広い範囲に分散した光であるロー
ビームを照射する第１の集光レンズ部、
（Ｄ）前記発光体および前記反射面から前方へ送られる
光を透過して、前方の狭い範囲に収束した光であるハイ
ビームを照射する第２の集光レン゛ズ部、
（Ｅ）前記第２の集光レンズ部の表面に配置し、制御電
圧の印加で透明な状態から不透明な状態に変化すること
により、前記第２の集光レンズ部を透過する光によるハ
イビームの照射を妨げる液晶スクリーン、
を備えて構成されている。The headlight of the present invention includes (A) a light emitting body such as a filament that generates light; (B)
a reflective surface that reflects the light sent backward from the light emitting body and sends it forward; (C) the light transmitted forward from the light emitting body and the reflective surface is transmitted and the light is dispersed over a wide range in front; (D) a first condensing lens unit that emits a low beam; (D) a second condensing lens unit that transmits light sent forward from the light emitting body and the reflective surface and emits a high beam that is light converged in a narrow area in front; (E) a condensing lens section, which is disposed on the surface of the second condensing lens section and changes from a transparent state to an opaque state by applying a control voltage; The system is equipped with an LCD screen that prevents high beam irradiation by light that passes through the system.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明のヘッドライトの一実施例を示す断面図
である。FIG. 1 is a sectional view showing an embodiment of the headlight of the present invention.
第１図に示すように、発光体であるフィラメント１は、
光を発生している。As shown in FIG. 1, a filament 1 that is a light emitter is
It generates light.
一方、反射面２は、焦点Ｆを有する放物面を形成し、焦
点Ｆの外側に置がれなフィラメント１がら後方へ送られ
る光ａ Ｉ ＋ ｂｌを反射して前方に送っている。On the other hand, the reflecting surface 2 forms a paraboloid having a focal point F, and reflects the light a I + bl, which is sent backward from the filament 1 placed outside the focal point F, and sends it forward.
このため、上方の第１の集光レンズ部３は、フィラメン
ト１および反射面２がら前方へ送られる光を透過して、
前方の広い範囲に分散した光であるロービームａ２を照
射することができる。Therefore, the upper first condensing lens section 3 transmits the light sent forward from the filament 1 and the reflective surface 2, and
It is possible to irradiate a low beam a2, which is light that is dispersed over a wide area in front of the vehicle.
また、下方の第２の集光レンズ部４は、フィラメント１
および反射面２から前方へ送られる光を透過して、前方
の狭い範囲に収束した光であるハイビームｂ２を照射す
ることができる。Further, the lower second condensing lens section 4 has a filament 1
The light transmitted forward from the reflective surface 2 can be transmitted and a high beam b2, which is light converged in a narrow range in front, can be irradiated.
一方、液晶スクリーン５は、第２の集光レンズ部４の表
面に配置し、制御電圧の印加で透明な状態から不透明な
状態に変化することにより、第２の集光レンズ部４を透
過する光によるハイビームｂ２の照射を妨げることがで
きる。On the other hand, the liquid crystal screen 5 is disposed on the surface of the second condensing lens section 4, and changes from a transparent state to an opaque state by applying a control voltage, thereby transmitting light through the second condensing lens section 4. Irradiation of the high beam b2 by light can be prevented.
従って、本実施例のヘッドライトは、液晶スクリーン５
の制御電圧により、ロービームとハイビームとを切替え
ることができる。Therefore, in the headlight of this embodiment, the liquid crystal screen 5
The control voltage allows switching between low beam and high beam.
以上述べたように、本実施例のヘッドライトは、集光レ
ンズ面に液晶スクリーンを配置して、液晶スクリーンに
おける光の透過性を制御することにより、一つの発光用
フィラメントでロービームとハイビームとを切替えるこ
とができる。As described above, the headlight of this embodiment has a liquid crystal screen placed on the condensing lens surface and controls the light transmittance of the liquid crystal screen, thereby producing low beam and high beam with one light emitting filament. Can be switched.
以上説明したように、本発明のヘッドライトは、集光レ
ンズ面に液晶スクリーンを配置して、液晶スクリーンに
おける光の透過性を制御することにより、一つの発光用
フィラメントでロービームとハイビームとを切替えるこ
とができるという効果を有している。As explained above, the headlight of the present invention switches between low beam and high beam with one light emitting filament by arranging a liquid crystal screen on the condensing lens surface and controlling the transmittance of light on the liquid crystal screen. It has the effect of being able to
なお、発光用フィラメントが、一つのため、電流容量の
大きい継電器も、一つで良いという効果がある。Furthermore, since there is only one light-emitting filament, there is an advantage that only one relay with a large current capacity is required.
第１図は本発明のヘッドライトの一実施例を示す断面図
、第２図は従来のヘッドライトの一例を示す断面図であ
る。
１・・・・・・フィラメント、２・・・・・・反射面、
３・・・・・・第１の集光レンズ部、４・・・・・・第
２の集光レンズ部、５・・・・・・液晶スクリーン、２
１・・・・・・ロービーム用フィラメント、２２・・・
・・・ハイビーム用フイラメン１−１２３・・・・・・
ロービーム遮光板、２４・・・・・・反射面、２５・・
・・・・第１の集光レンズ部、２６・・・・・・第２の
集光レンズ部。FIG. 1 is a sectional view showing an embodiment of the headlight of the present invention, and FIG. 2 is a sectional view showing an example of a conventional headlight. 1...Filament, 2...Reflecting surface,
3...First condensing lens section, 4...Second condensing lens section, 5...Liquid crystal screen, 2
1...Low beam filament, 22...
...High beam filament 1-123...
Low beam light shielding plate, 24... Reflective surface, 25...
...First condensing lens section, 26... Second condensing lens section.
Claims (1)
に送る反射面、 （Ｃ）前記発光体および前記反射面から前方へ送られる
光を透過して、前方の広い範囲に分散した光であるロー
ビームを照射する第１の集光レンズ部、 （Ｄ）前記発光体および前記反射面から前方へ送られる
光を透過して、前方の狭い範囲に収束した光であるハイ
ビームを照射する第２の集光レンズ部、 （Ｅ）前記第２の集光レンズ部の表面に配置し、制御電
圧の印加で透明な状態から不透明な状態に変化すること
により、前記第２の集光レンズ部を透過する光によるハ
イビームの照射を妨げる液晶スクリーン、 を備えることを特徴とするヘッドライト。[Scope of Claims] (A) A light-emitting body such as a filament that generates light; (B) a reflecting surface that reflects the light sent backward from the light-emitting body and sends it forward; (C) the light-emitting body and the reflection a first condenser lens section that transmits light sent forward from the surface and irradiates a low beam that is light dispersed over a wide range in front; (D) light sent forward from the light emitting body and the reflective surface; (E) A second condensing lens section that irradiates a high beam, which is light that passes through and converges in a narrow area in front, (E) is arranged on the surface of the second condensing lens section and is made transparent by applying a control voltage 1. A headlight comprising: a liquid crystal screen that changes from a transparent state to an opaque state to prevent high beam irradiation by light transmitted through the second condensing lens section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63224309A JPH0272502A (en) | 1988-09-06 | 1988-09-06 | Headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63224309A JPH0272502A (en) | 1988-09-06 | 1988-09-06 | Headlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0272502A true JPH0272502A (en) | 1990-03-12 |
Family
ID=16811743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63224309A Pending JPH0272502A (en) | 1988-09-06 | 1988-09-06 | Headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0272502A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010092873A (en) * | 2001-07-17 | 2010-04-22 | Epcos Ag | Overvoltage arrester |
| CN106949418A (en) * | 2016-01-06 | 2017-07-14 | 比亚迪股份有限公司 | Vehicle dipped headlight group and the vehicle with it |
-
1988
- 1988-09-06 JP JP63224309A patent/JPH0272502A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010092873A (en) * | 2001-07-17 | 2010-04-22 | Epcos Ag | Overvoltage arrester |
| CN106949418A (en) * | 2016-01-06 | 2017-07-14 | 比亚迪股份有限公司 | Vehicle dipped headlight group and the vehicle with it |
| CN106949418B (en) * | 2016-01-06 | 2020-11-06 | 比亚迪股份有限公司 | Vehicle dipped beam set and vehicle having the same |
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