JP2011238422A - Vehicular headlight - Google Patents

Vehicular headlight Download PDF

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JP2011238422A
JP2011238422A JP2010107924A JP2010107924A JP2011238422A JP 2011238422 A JP2011238422 A JP 2011238422A JP 2010107924 A JP2010107924 A JP 2010107924A JP 2010107924 A JP2010107924 A JP 2010107924A JP 2011238422 A JP2011238422 A JP 2011238422A
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light
filament
reflecting surface
vicinity
bulb
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JP5592154B2 (en
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Katsushi Ono
克司 大野
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Stanley Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a vehicular headlight in which light distribution patterns can be changed without installing a movable portion, respective light distribution patterns adapted to characteristics respectively required for high beam and low beam are formed, glare light is not generated when the low beam is formed, and a light utilization efficiency is made higher compared with a conventional one.SOLUTION: The vehicular headlight 1 includes: a bulb 4 having a first filament 41 and a second filament 42; a parabolic first reflecting face 51 having a focus F1 in the vicinity of the first filament 41; an ellipsoidal second reflecting face 61 which has a first focus F21 in the vicinity of the second filament 42 and in which the light emitted from the second filament 42 is reflected to the second focus F22; and a parabolic third reflecting face 71 having a focus F3 in the vicinity of the second focus F22 of the second reflecting face 61. The bulb 4 has a cup 43 in the vicinity of the first filament 41 to shade the light from the first filament 41 to the second reflecting face 61.

Description

本発明は、車両用前照灯に関する。   The present invention relates to a vehicle headlamp.

二輪車用などの二眼式の車両用前照灯として、可動部分を設けることなく走行ビームとすれ違いビームとに配光パターンを切り換えることのできるものが提案されている(例えば、特許文献1参照)。   2. Description of the Related Art As a two-lens vehicle headlamp for a motorcycle or the like, there has been proposed one that can switch a light distribution pattern between a traveling beam and a passing beam without providing a movable part (see, for example, Patent Document 1). .

この車両用前照灯100は、図7に示すように、上下に並んだ第一発光部111及び第二発光部112を有するバルブ110と、バルブ110の下方に配設され、第一発光部111近傍に焦点を有する放物系の第一反射面120,120と、バルブ110の上方に配設され、第二発光部112近傍に第一焦点を有して長軸が左右方向に延在する楕円系の第二反射面130,130と、第二反射面130,130の第二焦点を焦点とし、反射方向を光軸Ax方向とした第三反射面140,140と、第三反射面140,140の焦点近傍に配設され、第二反射面130から第三反射面140への光の一部を遮光してすれ違いビームのカットオフラインを形成するシャッタ150,150と、を備えている。   As shown in FIG. 7, the vehicle headlamp 100 includes a bulb 110 having a first light-emitting portion 111 and a second light-emitting portion 112 arranged vertically, and a first light-emitting portion. The parabolic first reflecting surfaces 120 and 120 having a focal point near 111 and the bulb 110 are disposed above the first light-emitting unit 112 and the major axis extends in the left-right direction. Second reflecting surfaces 130, 130 of the elliptical system, third reflecting surfaces 140, 140 having the second focal point of the second reflecting surfaces 130, 130 as the focal point and the reflecting direction as the optical axis Ax direction, and the third reflecting surface The shutters 150 and 150 are disposed in the vicinity of the focal points 140 and 140 to block a part of the light from the second reflecting surface 130 to the third reflecting surface 140 to form a cut-off line of a low beam. .

そして、走行ビームを形成するときには、バルブ110内の下側の第一発光部111を発光させ、その出射光を第一反射面120,120で反射させて前方へ照射させると同時に、この第一発光部111からの出射光を第二反射面130,130で反射させ、更に第三反射面140,140で反射させて前方へ照射させている。
一方、すれ違いビームを形成するときには、バルブ110内の上側の第二発光部112を発光させ、その出射光を走行ビーム形成時と全く同様に第一反射面120〜第三反射面140で反射させて前方へ照射させている。
When the traveling beam is formed, the first light emitting portion 111 on the lower side in the bulb 110 is caused to emit light, and the emitted light is reflected by the first reflecting surfaces 120 and 120 and irradiated forward. Light emitted from the light emitting unit 111 is reflected by the second reflecting surfaces 130 and 130 and further reflected by the third reflecting surfaces 140 and 140 to be irradiated forward.
On the other hand, when forming a passing beam, the upper second light emitting portion 112 in the bulb 110 is caused to emit light, and the emitted light is reflected by the first reflecting surface 120 to the third reflecting surface 140 in the same manner as when the traveling beam is formed. To irradiate forward.

つまり、この車両用前照灯100では、走行ビームとすれ違いビームとの何れの配光パターンを形成するときにも同様の反射過程を経ているものの、発光源を第一発光部111と第二発光部112とに切り換えることによって、これら第一発光部111と第二発光部112との位置の差異に起因する光路差を利用して、可動部分を設けることなく走行ビームとすれ違いビームとに配光パターンを切り換えている。   That is, in the vehicle headlamp 100, the light source is the first light emitting unit 111 and the second light emitting although the same reflection process is performed when any of the light distribution patterns of the traveling beam and the passing beam is formed. By switching to the unit 112, light distribution between the traveling beam and the passing beam is performed without providing a movable part by utilizing the optical path difference resulting from the difference in position between the first light emitting unit 111 and the second light emitting unit 112. The pattern is switched.

特開2008−243795号公報Japanese Patent Application Laid-Open No. 2008-243795

しかしながら、上記従来の車両用前照灯100では、以下の3つの問題があった。
第一に、何れの配光パターンを形成する場合にも同一の反射面を用いているため、走行ビームとすれ違いビームとの違いを明確にすることが難しく、それぞれに求められる特性に適応した各配光パターンを形成することが困難であった。
第二に、何れの配光パターンを形成する場合にも全ての反射面で光を反射させているため、高精度な光路設計が必要であった。特に、すれ違いビームを形成する場合には、各反射面やシャッタ150の設定が適切でないと、水平線より上方に光線が照射されてグレア光(眩惑光)を生じさせてしまうおそれがあった。
第三に、何れの配光パターンを形成する場合にもシャッタ150が一部の光を遮光してしまい、光利用効率を低下させていた。
However, the conventional vehicle headlamp 100 has the following three problems.
First, since the same reflecting surface is used when forming any light distribution pattern, it is difficult to clarify the difference between the traveling beam and the passing beam, and each of them adapted to the required characteristics. It was difficult to form a light distribution pattern.
Second, when any light distribution pattern is formed, the light is reflected by all the reflecting surfaces, so that a highly accurate optical path design is required. In particular, when forming a low-pass beam, if the setting of each reflecting surface and the shutter 150 is not appropriate, there is a possibility that a light beam is irradiated above the horizontal line and glare light (glare light) is generated.
Third, when any light distribution pattern is formed, the shutter 150 blocks a part of the light, thereby reducing the light use efficiency.

本発明は、上記事情を鑑みてなされたもので、可動部分を設けることなく走行ビームとすれ違いビームとに配光パターンを切り換えることができる車両用前照灯であって、走行ビームとすれ違いビームとのそれぞれに求められる特性に適応した各配光パターンを形成することができ、すれ違いビーム形成時にグレア光を生じさせることがなく、且つ、従来に比べて光利用効率を高くすることのできる車両用前照灯の提供を課題とする。   The present invention has been made in view of the above circumstances, and is a vehicle headlamp capable of switching a light distribution pattern between a traveling beam and a passing beam without providing a movable part, and includes a traveling beam and a passing beam. For vehicles that can form each light distribution pattern adapted to the characteristics required for each of them, do not cause glare light at the time of passing beam formation, and can increase the light utilization efficiency compared to the conventional The issue is to provide headlamps.

上記課題を解決するために、請求項1に記載の発明は、車両用前照灯において、
第一発光部及び第二発光部を有するバルブと、
前記第一発光部の近傍に焦点を有し、当該第一発光部から出射された光を車両前方へ反射させる放物系の第一反射面と、
前記第二発光部の近傍に第一焦点を有し、当該第二発光部から出射された光を第二焦点へ反射させる楕円系の第二反射面と、
前記第二反射面の第二焦点の近傍に焦点を有し、当該第二反射面で反射された光を車両前方へ反射させるとともに、前記バルブから遮蔽された放物系の第三反射面と、
を備え、
前記バルブは、前記第一発光部から前記第二反射面への光を遮光する遮光部材を前記第一発光部の近傍に有することを特徴とする。
In order to solve the above problems, the invention according to claim 1 is directed to a vehicle headlamp.
A bulb having a first light emitting part and a second light emitting part;
A parabolic first reflecting surface that has a focal point in the vicinity of the first light emitting unit and reflects light emitted from the first light emitting unit forward of the vehicle;
An elliptical second reflecting surface that has a first focal point in the vicinity of the second light emitting unit and reflects light emitted from the second light emitting unit to the second focal point;
A parabolic third reflecting surface that has a focal point in the vicinity of the second focal point of the second reflecting surface, reflects light reflected by the second reflecting surface toward the front of the vehicle, and is shielded from the bulb; ,
With
The bulb has a light blocking member that blocks light from the first light emitting unit to the second reflecting surface in the vicinity of the first light emitting unit.

本発明によれば、バルブの第一発光部を発光させた場合には、その出射光は第一反射面のみで反射されて車両前方へ照射され、第二反射面及び第三反射面には入射しない。一方、バルブの第二発光部を発光させた場合には、その出射光は第二反射面で反射された後に、更に第三反射面で反射されて車両前方へ照射される。したがって、すれ違いビームを形成するときには第一発光部を発光させ、走行ビームを形成するときには第二発光部を発光させることにより、可動部分を設けることなく走行ビームとすれ違いビームとに配光パターンを切り換えることができる。
このとき、第二反射面及び第三反射面には走行ビーム形成時にのみ光が入射するので、当該第二反射面及び第三反射面を走行ビーム形成に特化した反射面として設計することができ、ひいては、走行ビームとすれ違いビームとのそれぞれに求められる特性に適応した各配光パターンを形成することができる。
また、すれ違いビーム形成時には、第一反射面のみで光が反射され、走行ビーム形成用の第二反射面及び第三反射面に光が入射しないので、意図しないグレア光を生じさせるおそれがない。
更に、すれ違いビーム形成時には遮光部材により一部の光が遮られるものの、走行ビーム形成時には当該遮光部材により遮光されることはないので、何れの配光パターンを形成するときにも一部の光を遮光していた従来に比べ、光利用効率を高くすることができる。
According to the present invention, when the first light emitting part of the bulb is caused to emit light, the emitted light is reflected only by the first reflecting surface and irradiated to the front of the vehicle, and the second reflecting surface and the third reflecting surface are illuminated. Not incident. On the other hand, when the second light emitting portion of the bulb is caused to emit light, the emitted light is reflected by the second reflecting surface, and then reflected by the third reflecting surface and irradiated to the front of the vehicle. Therefore, the light distribution pattern is switched between the traveling beam and the passing beam without providing a movable part by causing the first light emitting portion to emit light when forming the passing beam and causing the second light emitting portion to emit light when forming the traveling beam. be able to.
At this time, since light is incident on the second reflecting surface and the third reflecting surface only when the traveling beam is formed, the second reflecting surface and the third reflecting surface can be designed as reflecting surfaces specialized for traveling beam formation. As a result, each light distribution pattern adapted to the characteristics required for each of the traveling beam and the passing beam can be formed.
Further, when forming a low beam, light is reflected only by the first reflecting surface, and light does not enter the second reflecting surface and the third reflecting surface for forming the traveling beam, so that there is no possibility of causing unintended glare light.
Furthermore, although a part of the light is blocked by the light blocking member when the passing beam is formed, the light is not blocked by the light blocking member when the traveling beam is formed. The light utilization efficiency can be increased compared to the conventional case where light is shielded.

実施形態における車両用前照灯の側断面図である。It is a sectional side view of the vehicle headlamp in an embodiment. バルブの斜視図である。It is a perspective view of a valve. 車両用前照灯の要部を示す斜視図である。It is a perspective view which shows the principal part of the vehicle headlamp. 車両用前照灯の要部を示す正面図である。It is a front view which shows the principal part of the vehicle headlamp. 車両用前照灯における配光パターン形成時の光線軌跡を示す図である。It is a figure which shows the light ray locus at the time of the light distribution pattern formation in the vehicle headlamp. 車両用前照灯が形成する配光パターンを示す図である。It is a figure which shows the light distribution pattern which a vehicle headlamp forms. 従来の車両用前照灯を示す斜視図である。It is a perspective view which shows the conventional vehicle headlamp.

以下、本発明の実施形態について、図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1は、本実施形態における車両用前照灯1の側断面図であり、図2は、車両用前照灯が備えるバルブ4の斜視図であり、図3及び図4は、車両用前照灯1の要部を示す斜視図及び正面図である。
なお、以下の説明では、「前」,「後」,「左」,「右」との記載は、車両用前照灯1が搭載された車両における方向を指すものとする。これに類する「前方」や「前面」等の記載についても同様である。
FIG. 1 is a side sectional view of a vehicle headlamp 1 according to this embodiment, FIG. 2 is a perspective view of a valve 4 provided in the vehicle headlamp, and FIGS. 3 and 4 are front views of the vehicle. It is the perspective view and front view which show the principal part of the lamp.
In the following description, “front”, “rear”, “left”, and “right” refer to directions in a vehicle on which the vehicle headlamp 1 is mounted. The same applies to descriptions such as “front” and “front”.

図1に示すように、車両用前照灯1は、前面が開口したランプボディ2と、ランプボディ2の前面開口を覆うように配置された透光カバー3とを備えている。これらランプボディ2と透光カバー3とで形成される灯室内には、バルブ4と、第一リフレクタ5と、第二リフレクタ6と、2つの第三リフレクタ7,7とが収容されている。   As shown in FIG. 1, the vehicle headlamp 1 includes a lamp body 2 having an open front surface and a translucent cover 3 disposed so as to cover the front opening of the lamp body 2. In the lamp chamber formed by the lamp body 2 and the translucent cover 3, a bulb 4, a first reflector 5, a second reflector 6, and two third reflectors 7 and 7 are accommodated.

バルブ4は、図2に示すように、前後方向に並設された第一フィラメント41及び第二フィラメント42の2つの発光部を有している。このうち、第一フィラメント41の下方近傍には、当該第一フィラメント41から第二リフレクタ6への光を遮光するカップ43が設けられている。つまり、バルブ4は、いわゆるH4タイプのダブルフィラメントバルブである。   As shown in FIG. 2, the bulb 4 has two light emitting portions of a first filament 41 and a second filament 42 arranged in parallel in the front-rear direction. Among these, a cup 43 that shields light from the first filament 41 to the second reflector 6 is provided near the lower portion of the first filament 41. That is, the valve 4 is a so-called H4 type double filament valve.

第一リフレクタ5は、図3及び図4に示すように、バルブ4の後部に固定されて凹状の前面を有しており、当該前面が第一反射面51を構成している。第一反射面51は、回転放物面を基調とした放物系の自由曲面であり、第一フィラメント41の近傍に焦点F1を有している。ここで、「第一フィラメント41の近傍」とは、第一フィラメント41の配設位置をも含むその近傍のことである。なお、以下の説明では、「近傍」との記載を同様の意味で用いることとする。   As shown in FIGS. 3 and 4, the first reflector 5 has a concave front surface that is fixed to the rear portion of the bulb 4, and the front surface constitutes a first reflection surface 51. The first reflecting surface 51 is a parabolic free-form surface based on a rotating paraboloid, and has a focal point F 1 in the vicinity of the first filament 41. Here, “the vicinity of the first filament 41” means the vicinity including the position where the first filament 41 is disposed. In the following description, the term “neighboring” is used in the same meaning.

第二リフレクタ6は、第一リフレクタ5の下方に配設され、バルブ4の下方位置を中心として上面が左右に分けられており、その各上面が第二反射面61を構成している。各第二反射面61は、左右方向に沿った長軸を有する回転楕円面を基調とした楕円系の自由曲面であり、第二フィラメント42の近傍に第一焦点F21を有するとともに、その左右側方に第二焦点F22を有している。   The second reflector 6 is disposed below the first reflector 5, and its upper surface is divided into left and right with the lower position of the bulb 4 as the center, and each upper surface constitutes a second reflecting surface 61. Each of the second reflecting surfaces 61 is an elliptical free-form surface based on a spheroid having a long axis along the left-right direction, and has a first focal point F21 in the vicinity of the second filament 42, and its left and right sides. It has a second focal point F22.

第三リフレクタ7,7は、第一リフレクタ5の左右に配設され、前面が第三反射面71を構成している。第三反射面71は、回転放物面を基調とした放物系の自由曲面であり、左右2つの第二反射面61,61に個別に対応するように、当該第二反射面61の第二焦点F22の近傍に焦点F3を有している。また、第三反射面71は、第一リフレクタ5によってバルブ4から遮蔽されており、第一フィラメント41及び第二フィラメント42からの光が直接入射しないように配設されている。   The third reflectors 7, 7 are arranged on the left and right sides of the first reflector 5, and the front surface constitutes a third reflecting surface 71. The third reflecting surface 71 is a parabolic free-form surface based on the rotating paraboloid, and the second reflecting surface 61 has a first reflecting surface 61 and 61 corresponding to the left and right second reflecting surfaces 61 and 61, respectively. A focal point F3 is provided in the vicinity of the bifocal point F22. The third reflecting surface 71 is shielded from the bulb 4 by the first reflector 5 and is arranged so that light from the first filament 41 and the second filament 42 does not enter directly.

続いて、車両用前照灯1における走行ビーム及びすれ違いビームの各配光パターンの形成動作について説明する。
図5は、車両用前照灯1における配光パターン形成時の光線軌跡を示す図であり、このうち(a)はすれ違いビームP1形成時の光線軌跡を示し、(b)は走行ビームP2形成時の光線軌跡を示している。また、図6は、車両用前照灯1が形成する配光パターンを示す図であり、このうち(a)はすれ違いビームP1を示し、(b)は走行ビームP2を示している。
Next, the operation of forming each light distribution pattern of the traveling beam and the passing beam in the vehicle headlamp 1 will be described.
FIGS. 5A and 5B are diagrams showing light ray trajectories when a light distribution pattern is formed in the vehicle headlamp 1, in which FIG. 5A shows a light ray trajectory when a passing beam P1 is formed, and FIG. 5B shows a travel beam P2 formation. The ray trajectory at the time is shown. FIG. 6 is a diagram showing a light distribution pattern formed by the vehicular headlamp 1, in which (a) shows a passing beam P1 and (b) shows a traveling beam P2.

まず、すれ違いビームP1を形成する場合には、図5(a)に示すように、バルブ4の第一フィラメント41を発光させる。
すると、第一フィラメント41から第一リフレクタ5へ出射された光L1は、第一反射面51によって反射され、透光カバー3を通じて車両前方へ照射される。この光L1は、図6(a)に示すように、すれ違いビームP1全体を形成する。
また、第一フィラメント41から下方へ出射された光は、カップ43に遮光されるため、第二反射面61,61には入射しない。更に、第一リフレクタ5によって第三反射面71がバルブ4から遮蔽されているため、第一フィラメント41からの光は第三反射面71にも入射しない。このとき、カップ43の後縁部によって、すれ違いビームP1のカットオフラインCが形成される。
First, when forming the passing beam P1, as shown in FIG. 5A, the first filament 41 of the bulb 4 is caused to emit light.
Then, the light L <b> 1 emitted from the first filament 41 to the first reflector 5 is reflected by the first reflecting surface 51 and is irradiated forward of the vehicle through the translucent cover 3. As shown in FIG. 6A, the light L1 forms the entire passing beam P1.
Further, the light emitted downward from the first filament 41 is shielded by the cup 43 and therefore does not enter the second reflecting surfaces 61 and 61. Further, since the third reflecting surface 71 is shielded from the bulb 4 by the first reflector 5, the light from the first filament 41 does not enter the third reflecting surface 71. At this time, the cut-off line C of the passing beam P1 is formed by the rear edge of the cup 43.

一方、走行ビームP2を形成する場合には、図5(b)に示すように、バルブ4の第二フィラメント42を発光させる。
すると、第二フィラメント42から第一リフレクタ5へ出射された光L2aは、第一反射面51によって反射され、透光カバー3を通じて車両前方へ照射される。この光L2aは、図6(b)に示すように、走行ビームP2のうち、主に全体を広く照射する照射エリアA1〜A3を形成する。
また、図5(b)に示すように、第二フィラメント42から下方の第二リフレクタ6へ出射された光L2bは、第二反射面61,61によって各第二焦点F22へ集光するように左右へ反射され、更に第三リフレクタ7,7の各第三反射面71によって反射されて、透光カバー3を通じて車両前方へ照射される。この光L2bは、図6(b)に示すように、走行ビームP2のうち、主に中心部分を照射する照射エリアA4を形成する。
On the other hand, when the traveling beam P2 is formed, the second filament 42 of the bulb 4 is caused to emit light as shown in FIG.
Then, the light L <b> 2 a emitted from the second filament 42 to the first reflector 5 is reflected by the first reflecting surface 51 and is irradiated forward of the vehicle through the translucent cover 3. As shown in FIG. 6B, the light L2a forms irradiation areas A1 to A3 that mainly irradiate the whole of the traveling beam P2.
Further, as shown in FIG. 5B, the light L2b emitted from the second filament 42 to the lower second reflector 6 is condensed by the second reflecting surfaces 61 and 61 to the respective second focal points F22. The light is reflected left and right, is further reflected by the third reflecting surfaces 71 of the third reflectors 7, 7, and is irradiated forward of the vehicle through the translucent cover 3. As shown in FIG. 6B, the light L2b forms an irradiation area A4 that mainly irradiates the central portion of the traveling beam P2.

以上の車両用前照灯1によれば、発光部をバルブ4の第一フィラメント41と第二フィラメント42とに切り換えるだけで、すれ違いビームP1と走行ビームP2とに配光パターンを切り換えることができる。すなわち、可動部分を設けることなく走行ビームP2とすれ違いビームP1とに配光パターンを切り換えることができる。   According to the vehicle headlamp 1 described above, the light distribution pattern can be switched between the passing beam P1 and the traveling beam P2 simply by switching the light emitting portion between the first filament 41 and the second filament 42 of the bulb 4. . That is, the light distribution pattern can be switched between the traveling beam P2 and the passing beam P1 without providing a movable part.

また、第二反射面61及び第三反射面71には走行ビームP2形成時にのみ光が入射するので、当該第二反射面61及び第三反射面71を走行ビームP2形成に特化した反射面として設計することができ、ひいては、走行ビームP2とすれ違いビームP1とのそれぞれに求められる特性に適応した各配光パターンを形成することができる。   Further, since light enters the second reflecting surface 61 and the third reflecting surface 71 only when the traveling beam P2 is formed, the second reflecting surface 61 and the third reflecting surface 71 are reflecting surfaces specialized for forming the traveling beam P2. As a result, each light distribution pattern adapted to the characteristics required for each of the traveling beam P2 and the passing beam P1 can be formed.

また、すれ違いビームP1形成時には、第一反射面51のみで光が反射され、走行ビームP2形成用の第二反射面61及び第三反射面71に光が入射しないので、意図しないグレア光を生じさせるおそれがない。   Further, when the passing beam P1 is formed, light is reflected only by the first reflecting surface 51, and light is not incident on the second reflecting surface 61 and the third reflecting surface 71 for forming the traveling beam P2, so that unintended glare light is generated. There is no fear.

また、すれ違いビームP1形成時にはカップ43により一部の光が遮られるものの、走行ビームP2形成時には当該カップ43に遮光されることはないので、何れの配光パターンを形成するときにも一部の光を遮光していた従来に比べ、光利用効率を高くすることができる。   In addition, some light is blocked by the cup 43 when the passing beam P1 is formed, but is not blocked by the cup 43 when the traveling beam P2 is formed. The light use efficiency can be increased as compared with the conventional case where light is shielded.

なお、本発明を適用可能な実施形態は、上述した実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲で適宜変更可能である。   The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

1 車両用前照灯
4 バルブ
41 第一フィラメント(第一発光部)
42 第二フィラメント(第二発光部)
43 カップ(遮光部材)
51 第一反射面
61 第二反射面
71 第三反射面
F1 第一反射面の焦点
F21 第二反射面の第一焦点
F22 第二反射面の第二焦点
F3 第三反射面の焦点
DESCRIPTION OF SYMBOLS 1 Vehicle headlamp 4 Bulb 41 1st filament (1st light emission part)
42 Second filament (second light emitting part)
43 cups (shading member)
51 1st reflective surface 61 2nd reflective surface 71 3rd reflective surface F1 The focus F21 of a 1st reflective surface The 1st focus F22 of a 2nd reflective surface The 2nd focus 2 of a 2nd reflective surface The focus of a 3rd reflective surface

Claims (1)

第一発光部及び第二発光部を有するバルブと、
前記第一発光部の近傍に焦点を有し、当該第一発光部から出射された光を車両前方へ反射させる放物系の第一反射面と、
前記第二発光部の近傍に第一焦点を有し、当該第二発光部から出射された光を第二焦点へ反射させる楕円系の第二反射面と、
前記第二反射面の第二焦点の近傍に焦点を有し、当該第二反射面で反射された光を車両前方へ反射させるとともに、前記バルブから遮蔽された放物系の第三反射面と、
を備え、
前記バルブは、前記第一発光部から前記第二反射面への光を遮光する遮光部材を前記第一発光部の近傍に有することを特徴とする車両用前照灯。
A bulb having a first light emitting part and a second light emitting part;
A parabolic first reflecting surface that has a focal point in the vicinity of the first light emitting unit and reflects light emitted from the first light emitting unit forward of the vehicle;
An elliptical second reflecting surface that has a first focal point in the vicinity of the second light emitting unit and reflects light emitted from the second light emitting unit to the second focal point;
A parabolic third reflecting surface that has a focal point in the vicinity of the second focal point of the second reflecting surface, reflects light reflected by the second reflecting surface toward the front of the vehicle, and is shielded from the bulb; ,
With
The bulb has a light blocking member that blocks light from the first light emitting unit to the second reflecting surface in the vicinity of the first light emitting unit.
JP2010107924A 2010-05-10 2010-05-10 Vehicle headlamp Active JP5592154B2 (en)

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CN109578928A (en) * 2017-09-25 2019-04-05 百斯特普越野竞技赛车有限责任公司 Light fixture
CN109488988A (en) * 2018-11-23 2019-03-19 安徽江淮汽车集团股份有限公司 Combination lamp

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