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JP3971076B2 - Vehicle headlamp - Google Patents
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JP3971076B2 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

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Publication number
JP3971076B2
JP3971076B2 JP2000034498A JP2000034498A JP3971076B2 JP 3971076 B2 JP3971076 B2 JP 3971076B2 JP 2000034498 A JP2000034498 A JP 2000034498A JP 2000034498 A JP2000034498 A JP 2000034498A JP 3971076 B2 JP3971076 B2 JP 3971076B2
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JP
Japan
Prior art keywords
light source
light
insulating plate
heat insulating
electromagnetic solenoid
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 - Fee Related
Application number
JP2000034498A
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Japanese (ja)
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JP2001229728A (en
Inventor
均 谷内
浩 岩崎
泰行 三間
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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Priority to JP2000034498A priority Critical patent/JP3971076B2/en
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  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は車両用前照灯に関するものであり、詳細には光源に可動式のフードを設けて反射面に達する光源光を制御し1つの光源で走行ビーム配光とすれ違いビーム配光との切り替えを可能とした車両用前照灯に関するものである。
【0002】
【従来の技術】
従来、この種の車両用前照灯90は、例えば図6に示すように構成されており、メタルハライドランプなど1つの光源91には固定フード92と、該固定フード92など適宜な固定部に回動軸93aで回動自在に軸支された可動フード93と、該可動フード93を駆動するための電磁ソレノイドなどの駆動装置94とが設けられている。
【0003】
可動フード93と電磁ソレノイド94とは、可動フード93の端部と電磁ソレノイド94のプランジャー94aの端部との夫々に設けられた軸受穴に連接リンク94bが嵌着されて接続されていて、電磁ソレノイド94を駆動することで可動フード93は展開位置Sから収納位置Mへ移動を行うものとされると共に、可動フード93にはリターンスプリング93bが設けられ、電磁ソレノイド94の駆動が停止されたときには収納位置Mから展開位置Sへ復帰を行うものとされている。
【0004】
電磁ソレノイド94は反射鏡95の背面側に固定されていて、すれ違い配光を得るときには前記電磁ソレノイド94は駆動しないでつまりプランジャー94aは吸引されずに可動フード93はリターンスプリング93bによって展開位置Sのままとし、走行配光を得るときには前記電磁ソレノイド94を駆動してプランジャー94aが吸引されることで可動フード93を回動軸93aを軸に回動して収納位置Mとして、光源91から反射鏡95に達する光を制御して配光の切り替えを行うものである。
【0005】
【発明が解決しようとする課題】
しかしながら、こうした従来の車両用前照灯90の場合、電磁ソレノイド94などの駆動装置は光源91近傍に回動自在に軸支された可動フード93を駆動するためものであるので、どうしても光源91の近くに設置せざるを得ないものである。そのため、光源91からの放射熱によって電磁ソレノイド94の温度が上昇し、低い温度のときに比べて吸引力が低下して動作不良を起こすといった問題点を生じてしまい、こうした高温下の状況においても確実な動作を行わせるためにはより大型の電磁ソレノイド94が必要となってしまい、結果としてこれが前照灯90全体の大型化、コストアップといった問題点を生じ、この点の解決が課題とされるものとなっている。
【0006】
【課題を解決するための手段】
本発明は上記した従来の課題を解決するための具体的手段として、1つの光源に対して固定フードと可動フードと該可動フードを移動させる駆動装置とが設けられ、前記可動フードを駆動装置の作動によって移動させることで前記光源からの光の反射鏡に達する範囲を可変させ配光特性を切り替えて成る車両用前照灯において、前記光源と駆動装置との間には断熱板が設けられ、前記断熱板は前記光源から遠い側の端部が前記駆動装置を覆うように断面略コ字状に形成され前記駆動装置が取付けられ、前記断熱板の前記光源に近い側の端部には前記固定フードが取付けられ若しくは一体に形成されていると共に、回動軸が設けられていて前記可動フードが回動自在に軸支され、さらに、前記断熱板の少なくとも光源からの直射光が照射される範囲には光拡散処理部が形成されていることを特徴とする車両用前照灯。
【0007】
【発明の実施の形態】
次に本発明を図に示す実施形態に基づいて詳細に説明する。
【0008】
図1に符号1で示すものは本発明に係る車両用前照灯であり、この車両用前照灯1は、回転放物面などの反射面を有する反射鏡2と、この反射鏡2の焦点位置近傍に設置されたメタルハライドランプなどの光源3と、この光源3の前方で光源3からの直射光を遮蔽するなど適宜配光の調整をする固定フード4と、この固定フード4に対し回動軸5aで回動自在に軸支された可動フード5と、この可動フード5を駆動するための電磁ソレノイド6とによって構成されている。
【0009】
可動フード5と電磁ソレノイド6とは、可動フード5の端部と電磁ソレノイド6のプランジャー6aの端部との夫々に設けられた軸受穴に連接リンク6bが嵌着されて接続されていて、電磁ソレノイド6を駆動することで可動フード5は展開位置Sから収納位置Mへ移動を行うものとされると共に、可動フード5には図示しないリターンスプリングが設けられ、電磁ソレノイド6の駆動が停止されたときには収納位置Mから展開位置Sへ復帰を行うものとされている。
【0010】
なお、図2に示すように反射鏡2の背面側には光源3を挿着するための光源挿着用開口部2aと、電磁ソレノイド6を挿着するための電磁ソレノイド挿着用開口部2bとが形成されていて、光源3及び電磁ソレノイド6が各々挿着されるようになっている。さらに、反射鏡2の背面にはバネ部材8が取り付けられていて、このバネ部材8の反発力によって光源3と電磁ソレノイド6とが反射鏡2に対し押さえ付けられて保持固定されるようになっている。
【0011】
こうして構成された車両用前照灯1は、まず、すれ違い配光を得るときには、前記電磁ソレノイド6は駆動しないでつまりプランジャー6aは吸引されずに可動フード5は図示しないリターンスプリングによって展開位置Sのままとされ、走行配光を得るときには、前記電磁ソレノイド6を駆動してプランジャー6aが吸引されることで可動フード5を回動軸5aを軸に回動させて収納位置Mとして、光源3から反射鏡2に達する光を制御して配光の切り替えを行うものであり、ここまでは従来例のものと同様である。
【0012】
ここで本発明では、光源3からの放射熱が電磁ソレノイド6に直接伝わるのを防止するために、光源3と電磁ソレノイド6との間に断熱板7が設けられている。断熱板7は、一枚の金属板を打ち抜いて折り曲げる等によって形成されていて、光源3に遠い側の端部が電磁ソレノイド6を覆うように断面略コ字状に形成されている。これによって、光源3からの放射熱が電磁ソレノイド6に直接伝わるのを防ぐと共に、電磁ソレノイド6の取り付けも兼ねている。
【0013】
また、断熱板7の光源3に近い側の端部には、固定フード4が取り付けられ若しくは一体に形成されていると共に、回動軸5aが設けられていて可動フード5が回動自在に軸支されている。
【0014】
こうして、本発明では断熱板7に固定フード4と可動フード5と電磁ソレノイド6とが取り付けられていて、本実施形態では、これら全体が一体化されたユニットとして構成されているものとして説明する。
【0015】
そして、図2のように反射鏡2に形成された光源挿着用開口部2aに、まず光源3を反射鏡2の裏面側から挿着し、反射鏡2の裏面に取り付けられたバネ部材8の光源保持部8aが光源3のフランジ部3aを反射鏡2の裏面にバネ部材8の反発力によって押さえつけることで、反射鏡2に対し光源3を保持固定する。
【0016】
次に、前述の通り断熱板7に固定フード4と可動フード5と電磁ソレノイド6とが一体化されたユニットを、灯具前面側より反射鏡2の電磁ソレノイド挿着用開口部2bに挿着し、前記バネ部材8の光源保持部8aと一体に形成された電磁ソレノイド保持部8bに断熱板7に形成されたフック部7aを引っ掛けることにによって、バネ部材8による反発力で前記ユニットを反射鏡2に対し押圧して固定している。なお、フック部7aは断熱板7を切り起こす等によって一体に形成されている。
【0017】
こうして、バネ部材8の反発力によって、光源3と電磁ソレノイド6とを一緒に反射鏡2に対して固定することができ、少ない部品点数で構成することが可能になる。
【0018】
なお、このとき断熱板7は板状の金属で形成されていて光源3の近傍に設置されているため、図3に示すように、光源3からの光を反射し、その反射光が反射鏡2の反射面に当たって前面レンズを通して出射されて、グレア光Gを発生してしまうことが考えられる。
【0019】
そこで本発明においては、さらに断熱板7の光源3からの光が当たる範囲に光拡散処理部7bを形成する。光拡散処理部7bの形状としては、図5の(a)のように光源3側に向かって半球状の凸形状をした突起部を複数形成したり、(b)のように半球状の凹形状をした突起部を複数形成したり、(c)のように光軸に対し垂直な向きに円筒状の突起部を複数形成したものや、(d)のように光軸と同じ向きに円筒状の突起部を形成したもの等が考えられる。また、表面を適宜粗面処理したものでも良く、要は光を拡散させる作用のある面になっていれば良いものである。なお、遮光板7の表面に黒色塗装を施して光吸収面としても同様の効果は得られる。ただし、この場合、断熱板7に対して塗装工程が追加となりコストアップとなってしまう。本発明では、断熱板7の一部を上記のような形状に加工するだけで良く、新たに後工程を追加することなくグレア光Gの防止が図れるため、より好ましいものである。
【0020】
上記のように構成したことで、光源3からの放射熱は断熱板7によって遮断されるため、電磁ソレノイド6に直接光源3からの熱が伝わるのを防いで電磁ソレノイド6の動作不良を防ぐと共に、この断熱板7は電磁ソレノイド6の取り付け保持も兼ねており、さらにこの断熱板7には固定フード4と可動フード5が取り付けられているため、少ない部品点数で構成することが可能となり、前照灯1全体を小型化、軽量化することができるものである。
【0021】
なお、上記実施形態では駆動装置として電磁ソレノイドを使用した例で説明したが、本発明はこれに限定されず、光源からの熱によって受ける影響が無視できない駆動装置においても同様の効果を発揮することは言うまでもない。
【0022】
【発明の効果】
以上説明したように本発明によれば、光源と駆動装置との間には断熱板が設けられ、この断熱板に対して固定フードと可動フードと駆動装置とが取り付けられていることを特徴とする車両用前照灯としたことで、光源と駆動装置の間には断熱板が設置され、光源からの熱が駆動装置に直接伝わることを防いでいるため、駆動装置が光源からの熱によって動作不良を起こすことが防止される。そのため大型の駆動装置を用いなくても動作が確実となり、この種の車両用前照灯の小型化と軽量化に優れた効果を奏するものである。また、この断熱板に対し固定フードと可動フードと駆動装置とが取り付けられているため、断熱板を新たに設けたことによって部品点数は増加したものの、この断熱板が全体を一体化する部材の役割も兼ねているため、上記断熱効果に加え、少ない部品点数でユニット化を実現し、さらなる前照灯の小型化と軽量化とに優れた効果を奏するものである。
【0023】
【図面の簡単な説明】
【図1】本発明に係る車両用前照灯の実施形態を示す断面図である。
【図2】同じ実施形態の反射鏡を示す斜視図である。
【図3】断熱板によってグレア光が発生している状態を示す説明図である。
【図4】本発明の要部を示す斜視図である。
【図5】図4の光拡散処理部の形状例を示す説明図である。
【図6】従来例の要部を示す断面図である。
【符号の説明】
1……車両用前照灯
2……反射鏡
2a……光源挿着用開口部
2b……電磁ソレノイド挿着用開口部
3……光源
4……固定フード
5……可動フード
5a……回動軸
6……電磁ソレノイド
6a……プランジャー
6b……連接リンク
7……断熱板
7a……フック部
7b……拡散処理部
8……バネ部材
8a……光源保持部
8b……電磁ソレノイド保持部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle headlamp, and more specifically, a movable hood is provided in a light source to control light source light reaching a reflecting surface, and switching between traveling beam light distribution and low beam light distribution with one light source. The present invention relates to a vehicular headlamp that makes it possible.
[0002]
[Prior art]
Conventionally, this type of vehicle headlamp 90 is configured as shown in FIG. 6, for example. A single light source 91 such as a metal halide lamp has a fixed hood 92 and an appropriate fixed portion such as the fixed hood 92. A movable hood 93 pivotally supported by a moving shaft 93 a and a drive device 94 such as an electromagnetic solenoid for driving the movable hood 93 are provided.
[0003]
The movable hood 93 and the electromagnetic solenoid 94 are connected by connecting the connecting link 94b to the bearing holes provided in the end of the movable hood 93 and the end of the plunger 94a of the electromagnetic solenoid 94, respectively. By driving the electromagnetic solenoid 94, the movable hood 93 is moved from the deployment position S to the storage position M. The movable hood 93 is provided with a return spring 93b, and the drive of the electromagnetic solenoid 94 is stopped. Sometimes, the storage position M is returned to the deployment position S.
[0004]
The electromagnetic solenoid 94 is fixed to the back side of the reflecting mirror 95, and when obtaining a passing light distribution, the electromagnetic solenoid 94 is not driven, that is, the plunger 94a is not attracted, and the movable hood 93 is expanded by the return spring 93b. When the travel light distribution is obtained, the electromagnetic solenoid 94 is driven to attract the plunger 94a, so that the movable hood 93 is rotated about the rotation shaft 93a as the storage position M. The light reaching the reflecting mirror 95 is controlled to switch the light distribution.
[0005]
[Problems to be solved by the invention]
However, in the case of such a conventional vehicle headlamp 90, the driving device such as the electromagnetic solenoid 94 is for driving the movable hood 93 pivotally supported in the vicinity of the light source 91. It must be installed nearby. For this reason, the temperature of the electromagnetic solenoid 94 rises due to the radiant heat from the light source 91, which causes a problem that the suction force is reduced compared to when the temperature is low, causing malfunction, and even under such high temperature conditions. In order to perform a reliable operation, a larger electromagnetic solenoid 94 is required. As a result, this causes problems such as an increase in the size and cost of the entire headlamp 90, and the solution of this point is a problem. Has become.
[0006]
[Means for Solving the Problems]
The present invention is provided with a fixed hood, a movable hood, and a drive device for moving the movable hood with respect to one light source as specific means for solving the above-described conventional problems. In a vehicle headlamp configured to change a range of light reflected from the light source to reach a reflecting mirror by switching the light distribution characteristics by moving by operation, a heat insulating plate is provided between the light source and the driving device, The heat insulating plate is formed in a substantially U-shaped cross section so that an end portion on the side far from the light source covers the driving device, the driving device is attached, and an end portion of the heat insulating plate on the side close to the light source is attached to the heat insulating plate. A fixed hood is attached or integrally formed, and a rotating shaft is provided so that the movable hood is pivotally supported. Further, at least direct light from the light source of the heat insulating plate is irradiated. Vehicle headlamp and a light diffusing section is formed on the circumference.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on embodiments shown in the drawings.
[0008]
What is indicated by reference numeral 1 in FIG. 1 is a vehicle headlamp according to the present invention. This vehicle headlamp 1 includes a reflecting mirror 2 having a reflecting surface such as a rotating paraboloid, and a reflecting mirror 2. A light source 3 such as a metal halide lamp installed in the vicinity of the focal position, a fixed hood 4 that appropriately adjusts light distribution such as shielding direct light from the light source 3 in front of the light source 3, and a rotation with respect to the fixed hood 4. The movable hood 5 is pivotally supported by a moving shaft 5a and an electromagnetic solenoid 6 for driving the movable hood 5.
[0009]
The movable hood 5 and the electromagnetic solenoid 6 are connected by connecting the connecting link 6b to the bearing holes provided at the end of the movable hood 5 and the end of the plunger 6a of the electromagnetic solenoid 6, By driving the electromagnetic solenoid 6, the movable hood 5 is moved from the deployment position S to the storage position M, and the movable hood 5 is provided with a return spring (not shown) to stop driving the electromagnetic solenoid 6. In the event of a failure, the return from the storage position M to the deployment position S is performed.
[0010]
As shown in FIG. 2, a light source insertion opening 2 a for inserting the light source 3 and an electromagnetic solenoid insertion opening 2 b for inserting the electromagnetic solenoid 6 are provided on the back side of the reflecting mirror 2. The light source 3 and the electromagnetic solenoid 6 are respectively inserted and attached. Further, a spring member 8 is attached to the back surface of the reflecting mirror 2, and the light source 3 and the electromagnetic solenoid 6 are pressed against the reflecting mirror 2 and held and fixed by the repulsive force of the spring member 8. ing.
[0011]
In the vehicle headlamp 1 thus configured, first, when obtaining a passing light distribution, the electromagnetic solenoid 6 is not driven, that is, the plunger 6a is not attracted, and the movable hood 5 is unfolded by a return spring (not shown). When the travel light distribution is obtained, the electromagnetic hood 6 is driven to attract the plunger 6a, whereby the movable hood 5 is rotated about the rotation shaft 5a as the storage position M, and the light source The light distribution from 3 to the reflecting mirror 2 is controlled to switch the light distribution, and the steps up to here are the same as those in the conventional example.
[0012]
Here, in the present invention, a heat insulating plate 7 is provided between the light source 3 and the electromagnetic solenoid 6 in order to prevent radiant heat from the light source 3 from being directly transmitted to the electromagnetic solenoid 6. The heat insulating plate 7 is formed by punching and bending a single metal plate or the like, and is formed in a substantially U-shaped cross section so that the end portion on the side far from the light source 3 covers the electromagnetic solenoid 6. This prevents the radiant heat from the light source 3 from being directly transmitted to the electromagnetic solenoid 6 and also serves to attach the electromagnetic solenoid 6.
[0013]
A fixed hood 4 is attached to or integrally formed with the end of the heat insulating plate 7 near the light source 3, and a rotating shaft 5a is provided so that the movable hood 5 can be pivoted. It is supported.
[0014]
Thus, in the present invention, the fixed hood 4, the movable hood 5, and the electromagnetic solenoid 6 are attached to the heat insulating plate 7, and in the present embodiment, description will be made assuming that these are configured as an integrated unit.
[0015]
Then, the light source 3 is first inserted into the light source insertion opening 2 a formed in the reflecting mirror 2 as shown in FIG. 2 from the back surface side of the reflecting mirror 2, and the spring member 8 attached to the back surface of the reflecting mirror 2. The light source holding portion 8 a holds and fixes the light source 3 to the reflecting mirror 2 by pressing the flange portion 3 a of the light source 3 against the back surface of the reflecting mirror 2 by the repulsive force of the spring member 8.
[0016]
Next, as described above, the unit in which the fixed hood 4, the movable hood 5 and the electromagnetic solenoid 6 are integrated with the heat insulating plate 7 is inserted into the electromagnetic solenoid insertion opening 2b of the reflector 2 from the front side of the lamp, By hooking the hook portion 7a formed on the heat insulating plate 7 on the electromagnetic solenoid holding portion 8b formed integrally with the light source holding portion 8a of the spring member 8, the unit is made to reflect the unit by the repulsive force of the spring member 8. Is pressed against and fixed. The hook portion 7a is integrally formed by cutting up the heat insulating plate 7 or the like.
[0017]
Thus, the light source 3 and the electromagnetic solenoid 6 can be fixed together with respect to the reflecting mirror 2 by the repulsive force of the spring member 8 and can be configured with a small number of parts.
[0018]
At this time, since the heat insulating plate 7 is formed of a plate-like metal and is installed in the vicinity of the light source 3, as shown in FIG. 3, the light from the light source 3 is reflected and the reflected light is reflected by the reflecting mirror. It is considered that the glare light G is generated by hitting the reflection surface 2 and being emitted through the front lens.
[0019]
Therefore, in the present invention, the light diffusion processing section 7b is further formed in the range where the light from the light source 3 of the heat insulating plate 7 is irradiated. As the shape of the light diffusion processing section 7b, a plurality of projections having a hemispherical convex shape toward the light source 3 side as shown in FIG. 5 (a), or a hemispherical concave shape as shown in (b). A plurality of shaped protrusions are formed, or a plurality of cylindrical protrusions are formed in a direction perpendicular to the optical axis as in (c), or a cylinder in the same direction as the optical axis as in (d) The thing which formed the shape-like projection part etc. can be considered. Further, the surface may be appropriately roughened, and the point is that the surface should have a function of diffusing light. The same effect can be obtained by applying a black coating on the surface of the light shielding plate 7 to obtain a light absorbing surface. However, in this case, a coating process is added to the heat insulating plate 7 and the cost is increased. In the present invention, only a part of the heat insulating plate 7 needs to be processed into the shape as described above, and glare light G can be prevented without newly adding a post-process, which is more preferable.
[0020]
With the above configuration, since the heat radiated from the light source 3 is blocked by the heat insulating plate 7, the heat from the light source 3 is prevented from being directly transmitted to the electromagnetic solenoid 6 to prevent malfunction of the electromagnetic solenoid 6. The heat insulating plate 7 also serves to attach and hold the electromagnetic solenoid 6. Further, since the fixed hood 4 and the movable hood 5 are attached to the heat insulating plate 7, it can be configured with a small number of parts. The entire lighting 1 can be reduced in size and weight.
[0021]
In the above embodiment, an example in which an electromagnetic solenoid is used as a driving device has been described. However, the present invention is not limited to this, and the same effect can be achieved even in a driving device in which the influence of heat from a light source cannot be ignored. Needless to say.
[0022]
【The invention's effect】
As described above, according to the present invention, a heat insulating plate is provided between the light source and the driving device, and the fixed hood, the movable hood, and the driving device are attached to the heat insulating plate. Because the vehicle headlamp is used, a heat insulating plate is installed between the light source and the driving device to prevent the heat from the light source from being transmitted directly to the driving device. It is possible to prevent malfunction. Therefore, the operation is ensured without using a large drive device, and this type of vehicle headlamp is excellent in miniaturization and weight reduction. In addition, because the fixed hood, movable hood, and driving device are attached to the heat insulating plate, the number of parts is increased by newly providing the heat insulating plate. Since it also serves as a role, in addition to the above heat insulation effect, it can be unitized with a small number of parts, and has an excellent effect in further downsizing and weight reduction of the headlamp.
[0023]
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a vehicle headlamp according to the present invention.
FIG. 2 is a perspective view showing a reflecting mirror of the same embodiment.
FIG. 3 is an explanatory view showing a state in which glare light is generated by a heat insulating plate.
FIG. 4 is a perspective view showing a main part of the present invention.
5 is an explanatory diagram showing a shape example of a light diffusion processing unit in FIG. 4; FIG.
FIG. 6 is a cross-sectional view showing a main part of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle headlamp 2 ... Reflector 2a ... Light source insertion opening 2b ... Electromagnetic solenoid insertion opening 3 ... Light source 4 ... Fixed hood 5 ... Movable hood 5a ... Rotating shaft 6 ... Electromagnetic solenoid 6a ... Plunger 6b ... Connection link 7 ... Insulating plate 7a ... Hook 7b ... Diffusion processing part 8 ... Spring member 8a ... Light source holding part 8b ... Electromagnetic solenoid holding part

Claims (1)

1つの光源に対して固定フードと可動フードと該可動フードを移動させる駆動装置とが設けられ、前記可動フードを駆動装置の作動によって移動させることで前記光源からの光の反射鏡に達する範囲を可変させ配光特性を切り替えて成る車両用前照灯において、前記光源と駆動装置との間には断熱板が設けられ、前記断熱板は前記光源から遠い側の端部が前記駆動装置を覆うように断面略コ字状に形成され前記駆動装置が取付けられ、前記断熱板の前記光源に近い側の端部には前記固定フードが取付けられ若しくは一体に形成されていると共に、回動軸が設けられていて前記可動フードが回動自在に軸支され、さらに、前記断熱板の少なくとも光源からの直射光が照射される範囲には光拡散処理部が形成されていることを特徴とする車両用前照灯。A fixed hood, a movable hood, and a drive device for moving the movable hood are provided for one light source, and the movable hood is moved by the operation of the drive device so that the range reaching the reflecting mirror of the light from the light source is reduced. In a vehicle headlamp having a variable light distribution characteristic that is changed, a heat insulating plate is provided between the light source and the driving device, and the heat insulating plate covers the driving device at an end portion far from the light source. The drive device is attached with a substantially U-shaped cross section, and the fixed hood is attached to or integrally formed with the end of the heat insulating plate on the side close to the light source. vehicle movable hood provided is rotatably supported, further characterized in that the light diffusing section is formed in the range where direct light is emitted from at least a light source of the heat insulating plate Before use Light.
JP2000034498A 2000-02-14 2000-02-14 Vehicle headlamp Expired - Fee Related JP3971076B2 (en)

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Publication number Priority date Publication date Assignee Title
JP4565604B2 (en) * 2001-09-14 2010-10-20 スタンレー電気株式会社 Vehicle headlamp
JP3991849B2 (en) 2002-11-28 2007-10-17 市光工業株式会社 head lamp
JP5817336B2 (en) * 2011-08-25 2015-11-18 市光工業株式会社 Vehicle headlamp

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