JPH0361961B2 - - Google Patents
Info
- Publication number
- JPH0361961B2 JPH0361961B2 JP61208428A JP20842886A JPH0361961B2 JP H0361961 B2 JPH0361961 B2 JP H0361961B2 JP 61208428 A JP61208428 A JP 61208428A JP 20842886 A JP20842886 A JP 20842886A JP H0361961 B2 JPH0361961 B2 JP H0361961B2
- Authority
- JP
- Japan
- Prior art keywords
- front lens
- focal point
- shade
- upward
- light source
- 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 - Lifetime
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
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/686—Blades, i.e. screens moving in a vertical plane
-
- 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
- F21S41/635—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 moving refractors, filters or transparent cover plates
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は自動車用前照灯に関し、更に詳しくは
楕円面反射鏡と凸レンズ状前面レンズを用いた自
動車用前照灯に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an automobile headlamp, and more particularly to an automobile headlamp using an ellipsoidal reflector and a convex front lens.
＜従来の技術＞
この種前照灯では第１図に示す如く楕円面反射
鏡１の第１焦点F1位置に光源バルブ２を設置さ
せ、楕円面反射鏡１で反射された光源バルブ２か
らの反射光P1，P2を楕円面反射鏡１の第２焦点
F2位置より前方に設置させた凸レンズ状前面レ
ンズ３でもつて拡散配光する仕組になつている。
その為に、すれ違い用ビーム時には上方へ向う反
射光P1をカツトするためのシエード４が必要と
なる。換言すれば、従来のこの種前照灯ではシエ
ード４がなければ走行ビーム用ランプとなりシエ
ード４を設置させるとすれ違いビーム用ランプと
なり、走行ビーム用ランプとすれ違いビーム用ラ
ンプとが独立して必要となり、片側２灯の４灯式
ヘツドランプしか構成できない不具合があつた。<Prior art> In this type of headlight, a light source bulb 2 is installed at the first focal point F1 position of an ellipsoidal reflector 1 as shown in FIG. The reflected lights P 1 and P 2 of
The convex front lens 3 installed in front of the F2 position also diffuses and distributes light.
Therefore, in the case of a passing beam, a shade 4 is required to cut the upward reflected light P1 . In other words, in a conventional headlight of this type, if there is no shade 4, it becomes a running beam lamp, and when shade 4 is installed, it becomes a passing beam lamp, and the running beam lamp and the passing beam lamp are required independently. , there was a problem that only a 4-lamp headlamp with 2 lights on each side could be configured.
＜発明が解決しようとする問題点＞
本発明はこの様な従来の不具合に鑑みてなされ
たものであり、１つのランプでもつて走行ビーム
用ランプにもすれ違いビーム用ランプにも使用で
きる自動車用前照灯を提供せんとするものであ
る。<Problems to be Solved by the Invention> The present invention has been made in view of the above-described problems in the prior art. The purpose is to provide illumination.
＜問題点を解決するための手段＞
係る目的を達成する本発明自動車用前照灯は、
楕円面反射鏡の第１焦点位置に光源バルブを設置
させ第２焦点付近にシエードを下方へ可動自在に
設置させると共に、該反射鏡の前方位置に該反射
鏡の第２焦点付近に焦点を有する凸レンズ状前面
レンズを上方へ可動自在に設置せしめた事を特徴
としたものである。<Means for solving the problems> The automobile headlamp of the present invention that achieves the above object has the following features:
A light source bulb is installed at the first focal point of the ellipsoidal reflecting mirror, a shade is installed movably downward near the second focal point, and the focal point is located at the front position of the reflecting mirror near the second focal point of the reflecting mirror. It is characterized by a convex lens-shaped front lens that is movable upward.
＜実施例＞
以下、本発明実施の一例を図面に基づいて説明
する。<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.
第１図は本発明自動車用前照灯の光学系を説明
する模式図であり、図中１は楕円面反射鏡、２は
光源バルブ、３は前面レンズ、４はシエードであ
る。 FIG. 1 is a schematic diagram illustrating the optical system of the automobile headlamp of the present invention, in which 1 is an ellipsoidal reflector, 2 is a light source bulb, 3 is a front lens, and 4 is a shade.
楕円面反射鏡１は周知の通り２つの焦点F1，
F2を有し、その第１焦点F1位置に設置させた光
源バルブ２からの光P1，P2を第２焦点F2位置に
反射収束し得るように構成される。 As is well known, the ellipsoidal reflector 1 has two focal points F 1 ,
F 2 , and is configured to be able to reflect and converge the lights P 1 and P 2 from the light source bulb 2 installed at the first focal point F 1 position to the second focal point F 2 position.
光源バルブ２は光軸Ｈに沿つて配置されたシン
グルフイラメント２ａのバルブを使用し、楕円面
反射鏡１の第１焦点F1位置に設置させる。 The light source bulb 2 uses a single filament 2a bulb arranged along the optical axis H, and is installed at the first focal point F1 of the ellipsoidal reflecting mirror 1.
前面レンズ３は前方に向かつて膨らんだ凸レン
ズを使用し、楕円面反射鏡１の前方位置に、その
焦点F3位置が楕円面反射鏡１の第２焦点F2付近、
すなわち第２焦点F2と一致するか或いは前又は
後方向に少しずれた位置となるように設置させ
る。 The front lens 3 uses a convex lens that bulges toward the front, and is located in front of the ellipsoidal reflector 1, with its focal point F3 near the second focal point F2 of the ellipsoidal reflector 1.
In other words, it is installed so that it coincides with the second focal point F2 or is slightly shifted in the front or rear direction.
シエード４は光源バルブ２からの光の一部をカ
ツトしてすれ違い用ビームとするためのものであ
り、前面レンズ３の焦点F3位置付近に設置させ
る。 The shade 4 is for cutting off part of the light from the light source bulb 2 to create a passing beam, and is installed near the focal point F3 of the front lens 3.
そして、前記前面レンズ３を適宜な手段を用い
て上方へ可動自在ならしめ、楕円面反射鏡１で反
射収束させた光源バルブ２からの光P1，P2をす
れ違い用ビーム時より上方へ向けて走行用ビーム
に変換させる。即ち、第２図に示した実施例で
は、前面レンズ３をその半径Ｒ中心点Ｏ付近を中
心にして上方へ角θ°（約3°）回転移動させると共
に、シエード４も前面レンズ３の中心点Ｏ付近を
中心にして下方へ角θ°（約3°）回転移動できるよ
うに構成したものである。即ち、第３図に示す如
く前面レンズ３を支持する支持枠５とシエード４
とを一体に形成させ、その支持枠５に回転支軸６
を前面レンズ３の半径Ｒ中心点Ｏ付近に位置させ
て光軸Ｈと直交する方向に突設させ、この支持枠
５を灯体（図示せず）に取付けて電気磁石などの
操作によつて前面レンズ３を上方へシエード４を
下方へ可動させるようにしたものである。従つて
この実施例の場合、前面レンズ３及びシエード４
を所定の通りの位置に設置させた状態（すなわち
第１図に示す状態）でもつて光源バルブ２を点灯
させれば、前面レンズ３を通つて上向きに配光さ
れる反射光P1はシエード４でカツトされてしま
うのですれ違い用ビームとなり、また前面レンズ
３の中心点Ｏ付近を中心として前面レンズ３を角
θだけ上方へ回転移動させシエード４を角θだけ
下方へ回転移動させた状態でもつて光源バルブ２
を点灯させれば、楕円面反射鏡１で反射された反
射光P1，P2はシエード４で遮ぎられることなく
前面レンズ３に入射し、前面レンズ３でもつて前
面レンズ３が上向いた分だけその最高光度点が上
方へ移動し、すれ違い用ビーム時よりも上方に配
光されて走行用ビームとなる。 Then, the front lens 3 is made freely movable upward using an appropriate means, and the lights P 1 and P 2 from the light source bulb 2 reflected and converged by the ellipsoidal reflector 1 are directed upward compared to the passing beam. to convert it into a running beam. That is, in the embodiment shown in FIG. It is configured so that it can be rotated downward by an angle θ° (approximately 3°) around point O. That is, as shown in FIG. 3, a support frame 5 supporting the front lens 3 and a shade 4
are integrally formed, and a rotation support shaft 6 is attached to the support frame 5.
is located near the center point O of the radius R of the front lens 3 and protrudes in a direction perpendicular to the optical axis H, and this support frame 5 is attached to a lamp body (not shown) and is operated by an electric magnet or the like. The front lens 3 is moved upward and the shade 4 is moved downward. Therefore, in this embodiment, the front lens 3 and the shade 4
If the light source bulb 2 is turned on with the light source bulb 2 installed in a predetermined position (that is, the state shown in FIG. 1), the reflected light P1 distributed upward through the front lens 3 will be reflected from the shade 4. This results in a passing beam, and even when the front lens 3 is rotated upward by an angle θ and the shade 4 is rotated downward by an angle θ around the center point O of the front lens 3, Light source bulb 2
When the light is turned on, the reflected lights P 1 and P 2 reflected by the ellipsoidal reflector 1 enter the front lens 3 without being blocked by the shade 4, and the front lens 3 also reflects the light as the front lens 3 faces upward. The highest luminous intensity point moves upwards, and the light is distributed higher than when it is a passing beam and becomes a driving beam.
また、第３図に示した実施例では、前面レンズ
３をそのまま上方へ距離Ｍ（約1.5mm）だけ移動で
きるように構成したものである。この時、シエー
ド４も下方へ少し移動できるように構成する。従
つてこの実施例の場合、前面レンズ３及びシエー
ド４を所定の通りの位置に設置させた状態（すな
わち第１図に示す状態）でもつて光源バルブ２を
点灯させれば、前面レンズ３を通つて上向きに配
光される反射光P1はシエード４でカツトされて
しまうのですれ違い用ビームとなり、また前面レ
ンズ３を上方へ距離Ｍだけ移動させた状態でもつ
て光源バルブ２を点灯させれば、楕円面反射鏡１
で反射された反射光P1，P2のほとんどはシエー
ド４で遮ぎられることなく前面レンズ３に入射
し、前面レンズ３でもつて前面レンズ３が上方へ
移動した分だけ最高光度点が上方へ移動し、すれ
違い用ビーム時よりも上方に配光されて走行用ビ
ームとなる。 Further, in the embodiment shown in FIG. 3, the front lens 3 is configured to be able to move upward by a distance M (approximately 1.5 mm). At this time, the shade 4 is also configured to be able to move slightly downward. Therefore, in the case of this embodiment, if the light source bulb 2 is turned on with the front lens 3 and the shade 4 installed in the predetermined positions (that is, the state shown in FIG. 1), the light will pass through the front lens 3. The reflected light P1 , which is distributed upward, is cut off by the shade 4 and becomes a passing beam.Also, if the light source bulb 2 is turned on while the front lens 3 is moved upward by a distance M, Ellipsoidal reflector 1
Most of the reflected lights P 1 and P 2 enter the front lens 3 without being blocked by the shade 4, and the maximum luminous intensity point of the front lens 3 also moves upward by the amount that the front lens 3 moves upward. It moves and becomes a driving beam by distributing the light higher than when it is a passing beam.
＜発明の効果＞
本発明自動車用前照灯は斯様に構成したので、
前面レンズを上方へ少し移動させるだけで１つの
ランプでもつて走行ビーム用ランプにもすれ違い
ビーム用ランプにも使用でき、従つて片側１灯の
２灯式ヘツドランプとして構成することが出来
る。<Effects of the Invention> Since the automobile headlamp of the present invention is configured in this manner,
Just by slightly moving the front lens upward, one lamp can be used as both a running beam lamp and a passing beam lamp, and can therefore be configured as a two-lamp headlamp with one lamp on each side.
しかも、前面レンズを上方へ移動させるだけで
なく、同時にシエードを下方へ移動させるように
したので、すれ違いビーム時のカツトラインがぼ
けたり色収差が発生することなく明確になる。 Moreover, since the front lens is not only moved upward, but also the shade is moved downward at the same time, the cut line in the case of passing beams becomes clear without blurring or chromatic aberration.
よつて、所期の目的を達成し得る。 Therefore, the intended purpose can be achieved.
第１図は本発明実施の一例を示す模式図、第２
図は同前面レンズとシエードを回転移動させた状
態を示す模式図、第３図は同概略斜視図、第４図
は本発明他の実施例を示し前面面レンズを上方へ
移動させた状態の模式図である。
図中、１は楕円面反射鏡、２は光源バルブ、３
は前面レンズ、４はシエード、F1は楕円面反射
鏡の第１焦点、F2は同第２焦点、F3は前面レン
ズの焦点、である。
FIG. 1 is a schematic diagram showing an example of implementing the present invention, and FIG.
The figure is a schematic diagram showing a state in which the front lens and shade are rotated, FIG. 3 is a schematic perspective view of the same, and FIG. 4 is a diagram showing another embodiment of the present invention with the front lens moved upward. It is a schematic diagram. In the figure, 1 is an ellipsoidal reflector, 2 is a light source bulb, and 3
is the front lens, 4 is the shade, F 1 is the first focal point of the ellipsoidal reflector, F 2 is the second focal point, and F 3 is the focal point of the front lens.
Claims (1)
設置させ第２焦点付近にシエードを下方へ可動自
在に設置させると共に、該反射鏡の前方位置に該
反射鏡の第２焦点付近に焦点を有する凸レンズ状
前面レンズを上方へ可動自在に設置せしめた事を
特徴とする自動車用前照灯。1. A light source bulb is installed at the first focal point of the ellipsoidal reflecting mirror, a shade is installed movably downward near the second focal point, and a focal point is set at the front position of the reflecting mirror near the second focal point of the reflecting mirror. A headlamp for an automobile, characterized in that a front lens in the shape of a convex lens is movably installed upward.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208428A JPS6364201A (en) | 1986-09-03 | 1986-09-03 | Head lamp for automobile |
| US07/093,091 US4857794A (en) | 1986-09-03 | 1987-08-31 | Single-filament headlamp unit capable of throwing both upper and lower beams |
| FR878712188A FR2603363B1 (en) | 1986-09-03 | 1987-09-02 | SINGLE FILAMENT HEADLIGHT DEVICE CAPABLE OF PROJECTING AN UPPER BEAM AS WELL AS A BOTTOM BEAM |
| DE19873729515 DE3729515A1 (en) | 1986-09-03 | 1987-09-03 | SINGLE-THREAD LAMP HEADLAMP UNIT FOR HIGH AND LOW BEAM |
| GB8720713A GB2195433B (en) | 1986-09-03 | 1987-09-03 | Single-filament headlamp unit capable of throwing both upper and lower beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208428A JPS6364201A (en) | 1986-09-03 | 1986-09-03 | Head lamp for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6364201A JPS6364201A (en) | 1988-03-22 |
| JPH0361961B2 true JPH0361961B2 (en) | 1991-09-24 |
Family
ID=16556052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61208428A Granted JPS6364201A (en) | 1986-09-03 | 1986-09-03 | Head lamp for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6364201A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417301A (en) * | 1987-07-11 | 1989-01-20 | Koito Mfg Co Ltd | Head lamp for vehicle |
| US4868718A (en) * | 1989-03-13 | 1989-09-19 | General Electric Company | Forward illumination lighting system for vehicles |
| JP2543306Y2 (en) * | 1990-06-12 | 1997-08-06 | 市光工業株式会社 | Direct optics for vehicle headlamps |
| JP2546897Y2 (en) * | 1992-02-28 | 1997-09-03 | 株式会社小糸製作所 | Variable light distribution type headlamp |
| JP4154651B2 (en) * | 2002-08-23 | 2008-09-24 | スタンレー電気株式会社 | Lamp and projection lens |
| JP4459095B2 (en) * | 2005-03-15 | 2010-04-28 | 株式会社小糸製作所 | Bending lamp for vehicles |
| JP4997052B2 (en) * | 2007-10-01 | 2012-08-08 | 株式会社小糸製作所 | Vehicle headlamp |
| JP5571516B2 (en) * | 2010-03-24 | 2014-08-13 | スタンレー電気株式会社 | Vehicle signal lights |
| JP7112253B2 (en) * | 2018-05-28 | 2022-08-03 | 株式会社小糸製作所 | vehicle lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62222505A (en) * | 1986-03-25 | 1987-09-30 | 市光工業株式会社 | Projector type head lamp |
-
1986
- 1986-09-03 JP JP61208428A patent/JPS6364201A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6364201A (en) | 1988-03-22 |
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