JPH0418405B2 - - Google Patents
Info
- Publication number
- JPH0418405B2 JPH0418405B2 JP63039188A JP3918888A JPH0418405B2 JP H0418405 B2 JPH0418405 B2 JP H0418405B2 JP 63039188 A JP63039188 A JP 63039188A JP 3918888 A JP3918888 A JP 3918888A JP H0418405 B2 JPH0418405 B2 JP H0418405B2
- Authority
- JP
- Japan
- Prior art keywords
- projection lens
- focal point
- mask plate
- spheroidal
- reflecting mirror
- 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
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
本発明は自動車など車両に使用される照明灯に
関するものであり、詳細にはフオグランプおよび
ドライビングランプとして兼用することを可能と
するために可変配光パターンとした前照灯に係
る。
The present invention relates to a lighting lamp used in a vehicle such as an automobile, and more particularly to a headlamp that has a variable light distribution pattern so that it can be used both as a fog lamp and a driving lamp.
従来のこの種の前照灯は、例えば第７図に示す
ように、回転放物面の反射鏡２１の焦点に略一致
させた光源２２と、該光源２２からの光線が前記
反射鏡２１に反射し平行光線として照射される照
射方向に配設されたレンズ２３とによる構成とさ
れるもので、フオグランプとして使用するときに
は前記レンズ２３をアンバ色で形成したものを使
用すると共に、該レンズ２３に施すレンズカツト
２３ａも比較的に強度のものとし、左右方向への
拡散を高めて前記フオグランプとしての目的に適
する配光特性とし、ドライビングランプとして使
用するときには前記レンズ２３を透明とすると共
に前記レンズカツト２３ａも浅いものとしスポツ
ト状の配光特性として遠方を確認するドライビン
グランプの目的に沿わせるものである。
A conventional headlamp of this kind, for example, as shown in FIG. It is composed of a lens 23 disposed in the irradiation direction that is reflected and irradiated as parallel light beams, and when used as a fog lamp, the lens 23 is formed in an amber color, and the lens 23 is made of an amber color. The lens cut 23a to be applied is also made relatively strong, and the diffusion in the left and right direction is increased to provide a light distribution characteristic suitable for the purpose of the fog lamp.When used as a driving lamp, the lens 23 is made transparent and the lens cut 23a is also made to be transparent. It is shallow and has a spot-like light distribution characteristic to meet the purpose of a driving lamp for confirming distance.
しかしながら、従来の構成の前照灯は前記にも
説明したように当初からフオグランプあるいはド
ライビングランプとして製造されるものであり、
このために山岳走行を主とする自動車使用者など
はその両方を取付けなければならず、主前照灯の
ほかに更に四個の前照灯の取付が必要となり取付
位置上での制約を受けたり、あるいは夫々の何れ
かを選択し点灯するための点灯回路の増設を要す
るなど手間が係るなど使用上で課題を生ずるもの
となつていた。
However, as explained above, headlamps with conventional configurations are manufactured from the beginning as fog lamps or driving lamps.
For this reason, car users who mainly drive in the mountains must install both, and in addition to the main headlight, it is necessary to install four additional headlights, and there are restrictions on the mounting position. However, it is necessary to add a lighting circuit to select and turn on either one of them, which is time-consuming and creates problems in use.
本発明は前記した従来の構成に生ずる課題を解
決するための具体的な手段として、長軸に垂直に
最大径近傍で切断された回転楕円面反射鏡と、こ
の回転楕円面反射鏡の内部に位置する第一焦点に
略一致して配置される光源と、前記回転楕円面反
射鏡と光軸を一致し該光軸方向前後に移動可能と
した凸レンズ状で所定の焦点距離を有する投影レ
ンズと、前記回転楕円面反射鏡と前記投影レンズ
との中間の位置に設けられ前記回転楕円面反射鏡
からの第二焦点に集束する光束中に起立位置と前
倒位置とに回動することで出入自在とされたマス
ク板とから成り、該マスク板の回動と前記投影レ
ンズの光軸方向前後の移動とは連動して動作する
ものとされ、前記投影レンズと前記第二焦点とが
略一致する位置とされたときには前記マスク板は
前記投影レンズの焦点の位置で前記光束中に前記
起立位置として挿入され、前記投影レンズの焦点
の位置と前記第二焦点とが略一致する位置とされ
たときには前記マスク板は前記光束中から前記前
倒位置として排除されることを特徴とする可変配
光パターン前照灯を提供することで、フオグラン
プとドライビングランプとを兼ねられるものとし
て前記従来の課題を解決するものである。
As a specific means for solving the problems that occur in the conventional configurations described above, the present invention provides a spheroidal reflector that is cut perpendicularly to the long axis near the maximum diameter, and a spheroidal reflector that is a light source disposed to substantially coincide with a first focal point; a projection lens having a predetermined focal length and having a convex lens shape whose optical axis coincides with the spheroidal reflecting mirror and is movable back and forth in the direction of the optical axis; , which is provided at an intermediate position between the spheroidal reflector and the projection lens, and enters and exits by rotating between an upright position and a forward position into the light beam converged on a second focal point from the spheroidal reflector. The rotation of the mask plate and the movement of the projection lens back and forth in the optical axis direction are operated in conjunction with each other, and the projection lens and the second focal point substantially coincide with each other. When the mask plate is in the upright position, the mask plate is inserted into the light beam at the focal point of the projection lens in the upright position, and the focal point of the projection lens and the second focal point substantially coincide with each other. By providing a variable light distribution pattern headlamp characterized in that the mask plate is sometimes removed from the light beam in the forward position, the conventional problem can be solved by providing a variable light distribution pattern headlamp that can serve as both a fog lamp and a driving lamp. It is something to be solved.
つぎに、本発明を図に示す一実施例に基づいて
詳細に説明する。
第１図に符号１で示すものは本発明による可変
配光パターン前照灯であり、この可変配光パター
ン補助前照灯１は略最大径の位置で長軸Ｘとの垂
直線で切断された回転楕円面反射鏡２が採用さ
れ、該回転楕円面反射鏡２の内部に位置する第一
焦点F1に電球のフイラメントなど光源３が配置
されている。
同時に前記回転楕円面反射鏡２の前方には一対
のスライドレール４，４がこの可変配光パターン
補助前照灯１の照射方向に沿うように設けられ、
投影レンズ５が前記スライドレール４，４上を摺
動自在となるように取付けられている。
また、前記スライドレール４，４の前記回転楕
円面反射鏡２と投影レンズ５との中間の位置には
軸６を使用するなど適宜な手段で不透明部材によ
るマスク板７が配設され、駆動モータ８と歯車装
置９とにより前記軸６を中心として前記マスク板
７は起立位置と前倒位置との回動自在となつてい
る。
ここで、前記マスク板７には一端をこのマスク
板７に軸止され、他の一端を前記投影レンズ５に
軸止された連結アーム１０が取付けられ、前記マ
スク板７の回動により前記投影レンズ５は前後に
摺動するものとなつている。尚、このときに前記
回転楕円面反射鏡２と投影レンズ５とは光学的な
軸を一致させたままで摺動する。
第２図、第３図は前記回転楕円面反射鏡２と投
影レンズ５とマスク板７との相互位置関係を示す
もので、第２図は前記マスク板７が前記した起立
位置にあるときであり、前記投影レンズ５は前記
回転楕円面反射鏡２の第二焦点F2の位置に略一
致し、前記マスク板７は前記投影レンズ５の焦点
F3の位置に起立する。前記第二焦点F2と前記投
影レンズ５との位置を適宜に調整することで前記
投影レンズ５を介する回転楕円面反射鏡２からの
光束は適宜な照射角をもつて照射されるものとな
るが、このとき前記マスク板７を略光軸、即ち長
軸Ｘを通る水平線下部となるように設けることで
配光特性の水平線より上の部分は遮蔽され、第４
図に示すような半月状の配光特性FOGとなる。
同様に第３図は前記マスク板７が前記した前倒
位置にあるときであり、前記投影回転楕円面反射
鏡２の第二焦点F2と前記投影レンズ５の焦点F3
とは一致するようにされ、これにより前記投影レ
ンズ５を介する回転楕円面反射鏡２からの光束は
略平行光となりスポツト状で照射されるものとな
り、このとき前記マスク板７は前倒位置であり前
記回転楕円面反射鏡２からの光束中から排除され
るので遮蔽は行われず、配光特性DRVは第５図
に示す円状となる。
第６図に示すものは本発明の別な実施例であ
り、前記した不透明材料に換えてマスク板７１を
前記回転楕円面反射鏡２からの光束全てに挿入さ
れる淡黄色の例えばガラスによる透明部材７１ａ
とし、所定部分に不透明塗料で塗装を施すなどし
てマスク板７１ｂを形成したもので、この様にし
たことで前記第２図に示したのと同様に前記マス
ク板７１が起立位置となる状態では第４図と同様
な半月状の配光特性となるが、このときに前記半
月状の部分は前記透明部材７１ａを透過すること
で淡黄色に着色されたものとなる。尚、その他の
部分は前の実施例と同様であるのでここでの詳細
な説明は省略する。
Next, the present invention will be explained in detail based on an embodiment shown in the drawings. What is indicated by reference numeral 1 in FIG. 1 is a variable light distribution pattern headlamp according to the present invention, and this variable light distribution pattern auxiliary headlamp 1 is cut along a line perpendicular to the long axis X at approximately the maximum diameter position. A light source 3 such as a filament of a light bulb is disposed at a first focal point F1 located inside the spheroidal reflecting mirror 2. At the same time, a pair of slide rails 4, 4 are provided in front of the spheroidal reflector 2 along the irradiation direction of the variable light distribution pattern auxiliary headlamp 1,
A projection lens 5 is mounted so as to be slidable on the slide rails 4, 4. Further, a mask plate 7 made of an opaque material is disposed at a position intermediate between the spheroidal reflecting mirror 2 and the projection lens 5 of the slide rails 4, 4 by an appropriate means such as using a shaft 6, and the drive motor 8 and a gear device 9, the mask plate 7 is rotatable about the shaft 6 between an upright position and a forward position. Here, a connecting arm 10 is attached to the mask plate 7, one end of which is pivoted to the mask plate 7, and the other end of which is pivoted to the projection lens 5. The lens 5 is designed to slide back and forth. At this time, the spheroidal reflecting mirror 2 and the projection lens 5 slide while keeping their optical axes aligned. FIGS. 2 and 3 show the mutual positional relationship between the spheroidal reflecting mirror 2, the projection lens 5, and the mask plate 7, and FIG. 2 shows the position when the mask plate 7 is in the above-mentioned upright position. The projection lens 5 substantially coincides with the position of the second focal point F2 of the spheroidal reflecting mirror 2, and the mask plate 7 corresponds to the focal point of the projection lens 5.
Stand in position F3 . By appropriately adjusting the positions of the second focal point F 2 and the projection lens 5, the light beam from the spheroidal reflecting mirror 2 passes through the projection lens 5 and is irradiated with an appropriate irradiation angle. However, at this time, by providing the mask plate 7 so as to be substantially below the horizontal line passing through the optical axis, that is, the long axis
This results in a half-moon-shaped light distribution characteristic FOG as shown in the figure. Similarly, FIG. 3 shows the mask plate 7 in the above-described forward position, and the second focal point F 2 of the projection spheroidal reflector 2 and the focal point F 3 of the projection lens 5 are shown in FIG.
As a result, the light beam from the spheroidal reflecting mirror 2 passing through the projection lens 5 becomes approximately parallel light and is irradiated in a spot shape, and at this time, the mask plate 7 is in the forward position. Since the light is excluded from the light beam from the spheroidal reflecting mirror 2, no shielding is performed, and the light distribution characteristic DRV becomes circular as shown in FIG. What is shown in FIG. 6 is another embodiment of the present invention, in which a mask plate 71 is made of a light yellow transparent material, for example glass, which is inserted into all the light beams from the spheroidal reflector 2 instead of the opaque material described above. Member 71a
The mask plate 71b is formed by painting predetermined portions with opaque paint, etc. By doing this, the mask plate 71 is in the upright position as shown in FIG. In this case, a half-moon-shaped light distribution characteristic similar to that shown in FIG. 4 is obtained, but at this time, the half-moon-shaped portion is colored pale yellow by passing through the transparent member 71a. Note that other parts are the same as those in the previous embodiment, so detailed explanations will be omitted here.
以上に説明したように本発明により、前後に移
動可能とした投影レンズと、回転楕円面反射鏡と
前記投影レンズとの中間の位置に設けられ前記回
転楕円面反射鏡からの第二焦点に集束する光束中
に出入自在とされたマスク板とから成り、前記投
影レンズと前記第二焦点とが略一致する位置とさ
れたときには前記マスク板は投影レンズの焦点の
位置で前記光束中に挿入され、前記投影レンズの
焦点の位置と前記第二焦点とが略一致する位置と
されたときには前記マスク板は前記光束中から排
除される構成の補助前照灯としたことで、前記投
影レンズと前記第二焦点とが略一致する位置とさ
れたときには前記マスク板で遮蔽され、上半部に
は全くに光が達することがない、例えばフオグラ
ンプとして理想的な配光特性を得られ、前記投影
レンズの焦点の位置と前記第二焦点とが略一致す
る位置とされたときには前記マスク板は前記光束
中から排除される構成の前照灯としたときにはス
ポツト状のドライビングランプとして理想的な配
光が得られるものとなり、一体の灯具で双方の目
的を達し、自動車への取付けを容易とする優れた
効果を奏するものであり、更に前記マスク板を淡
黄色の透明部材で形成し所定の部分をマスキング
したものとすることで、前記フオグランプとして
使用するときには霧に対し透過度に優れる淡黄色
の照射光に変換し、その効果を一層に高めるもの
である。
As explained above, according to the present invention, the projection lens is movable back and forth, the spheroidal reflecting mirror is provided at an intermediate position between the spheroidal reflecting mirror and the projection lens, and the light is focused at the second focal point from the spheroidal reflecting mirror. and a mask plate that can freely enter and exit the beam of light, and when the projection lens and the second focal point are positioned at approximately the same position, the mask plate is inserted into the beam of light at the focal point of the projection lens. By using an auxiliary headlamp configured such that the mask plate is excluded from the light beam when the focal point position of the projection lens and the second focal point substantially coincide with each other, the projection lens and the second focal point are When the second focal point is at a position that substantially coincides with the second focal point, it is shielded by the mask plate, and no light reaches the upper half, for example, ideal light distribution characteristics can be obtained as a fog lamp, and the projection lens When the position of the focal point and the second focal point are substantially coincident, and the headlight is configured such that the mask plate is excluded from the luminous flux, an ideal light distribution is achieved as a spot-shaped driving lamp. The present invention achieves both objectives with an integrated lamp, and has an excellent effect of facilitating installation in an automobile.Furthermore, the mask plate is formed of a pale yellow transparent material to mask predetermined portions. By doing so, when used as the fog lamp, it is converted into pale yellow illumination light that has excellent penetration through fog, further enhancing its effect.
第１図は本発明に係る可変配光パターン前照灯
の一実施例を示す斜視図、第２図、第３図は同じ
実施例の動作状態を示す説明図、第４図、第５図
は同じく配光特性を示すグラフ、第６図は本発明
の別な実施例を示す斜視図、第７図は従来例を示
す断面図である。
１……可変配光パターン前照灯、２……回転楕
円面反射鏡、３……光源、４……スライドレー
ル、５……投影レンズ、７，７１……マスク板、
F1……第一焦点、F2……第二焦点、F3……投影
レンズの焦点。
FIG. 1 is a perspective view showing an embodiment of a variable light distribution pattern headlamp according to the present invention, FIGS. 2 and 3 are explanatory diagrams showing the operating state of the same embodiment, and FIGS. 4 and 5 6 is a perspective view showing another embodiment of the present invention, and FIG. 7 is a sectional view showing a conventional example. 1... variable light distribution pattern headlight, 2... spheroidal reflector, 3... light source, 4... slide rail, 5... projection lens, 7, 71... mask plate,
F 1 ...First focus, F 2 ...Second focus, F 3 ...Focus of the projection lens.
Claims (1)
円面反射鏡と、この回転楕円面反射鏡の内部に位
置する第一焦点に略一致して配置される光源と、
前記回転楕円面反射鏡と光軸を一致し該光軸方向
前後に移動可能とした凸レンズ状で所定の焦点距
離を有する投影レンズと、前記回転楕円面反射鏡
と前記投影レンズとの中間の位置に設けられ前記
回転楕円面反射鏡からの第二焦点に集束する光束
中に起立位置と前倒位置とに回動することにより
出入自在とされたマスク板とから成り、該マスク
板の回動と前記投影レンズの光軸方向前後の移動
とは連動して動作するものとされ、前記投影レン
ズと前記第二焦点とが略一致する位置とされたと
きには前記マスク板は前記投影レンズの焦点の位
置で前記光束中に前記起立位置として挿入され、
前記投影レンズの焦点の位置と前記第二焦点とが
略一致する位置とされたときには前記マスク板は
前記光束中から前記前倒位置として排除されるこ
とを特徴とする可変配光パターン前照灯。1. A spheroidal reflector cut perpendicular to the long axis near the maximum diameter, and a light source disposed approximately in alignment with a first focal point located inside the spheroidal reflector;
a projection lens having a predetermined focal length and having a convex lens shape whose optical axis coincides with the spheroidal reflecting mirror and is movable back and forth in the optical axis direction; and a position intermediate between the spheroidal reflecting mirror and the projection lens. and a mask plate which can be freely moved in and out by rotating between an upright position and a forward position into the light beam focused on the second focal point from the spheroidal reflector, and the mask plate is configured to rotate. and the forward and backward movement of the projection lens in the optical axis direction are operated in conjunction with each other, and when the projection lens and the second focal point are brought to a position where they substantially coincide, the mask plate moves to the focal point of the projection lens. inserted into the light beam at a position as the upright position;
The variable light distribution pattern headlamp is characterized in that when the focal point position of the projection lens and the second focal point are brought to a position where they substantially coincide, the mask plate is removed from the light beam at the forward tilted position. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63039188A JPH01213901A (en) | 1988-02-22 | 1988-02-22 | Auxiliary headlight with variable beam distribution pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63039188A JPH01213901A (en) | 1988-02-22 | 1988-02-22 | Auxiliary headlight with variable beam distribution pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01213901A JPH01213901A (en) | 1989-08-28 |
| JPH0418405B2 true JPH0418405B2 (en) | 1992-03-27 |
Family
ID=12546132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63039188A Granted JPH01213901A (en) | 1988-02-22 | 1988-02-22 | Auxiliary headlight with variable beam distribution pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01213901A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747761Y2 (en) * | 1990-01-12 | 1995-11-01 | 株式会社小糸製作所 | Light color change drive mechanism for vehicle headlights |
| DE4324829C2 (en) * | 1992-07-24 | 2002-08-01 | Koito Mfg Co Ltd | Motor vehicle headlights based on the projection principle with an adjustable aperture device |
| US5373424A (en) * | 1992-10-21 | 1994-12-13 | Koito Manufacturing Co., Ltd. | Automotive projection headlamp |
| JP4428223B2 (en) * | 2004-12-07 | 2010-03-10 | 市光工業株式会社 | Vehicle lamp and vehicle headlamp device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813606B2 (en) * | 1974-08-14 | 1983-03-15 | 川崎製鉄株式会社 | It's hard to tell what's going on. |
| JPS62202402A (en) * | 1986-02-28 | 1987-09-07 | 市光工業株式会社 | Projector type head lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813606U (en) * | 1981-07-20 | 1983-01-28 | 日産自動車株式会社 | headlight device |
| JPH0345364Y2 (en) * | 1986-03-05 | 1991-09-25 | ||
| JPH0345365Y2 (en) * | 1986-03-24 | 1991-09-25 | ||
| JPH046084Y2 (en) * | 1987-03-31 | 1992-02-20 |
-
1988
- 1988-02-22 JP JP63039188A patent/JPH01213901A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813606B2 (en) * | 1974-08-14 | 1983-03-15 | 川崎製鉄株式会社 | It's hard to tell what's going on. |
| JPS62202402A (en) * | 1986-02-28 | 1987-09-07 | 市光工業株式会社 | Projector type head lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01213901A (en) | 1989-08-28 |
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