JP2007042548A - Headlight - Google Patents

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JP2007042548A
JP2007042548A JP2005228079A JP2005228079A JP2007042548A JP 2007042548 A JP2007042548 A JP 2007042548A JP 2005228079 A JP2005228079 A JP 2005228079A JP 2005228079 A JP2005228079 A JP 2005228079A JP 2007042548 A JP2007042548 A JP 2007042548A
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shutter
light distribution
headlight
light
focal point
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JP4486007B2 (en
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Tsutomu Yamamoto
勉 山本
Makoto Kaneda
真 金田
Yukio Yamanaka
幸雄 山中
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of conventional projector-type headlights using a movable type shutter in which only one or two kind of light-distribution-patterns can be obtained, thereby less satisfying running conditions of a vehicle. <P>SOLUTION: This headlight 1 comprises a shutter assembly 4 having three shutters which is arranged in the vicinity of the second focal point of an elliptical reflecting surface but shifted in a direction perpendicular to the major axis, and each shutter of which has a fulcrum and is attached as to be turnable within a predetermined range; projection lens 5 having a focal point in the vicinity of the shutters; a shutter moving rod 8 which is movable in the upward and downward directions in a state of being fixed in a vehicle body, and has a pin drive arm which abuts on a pin formed in each shutter and makes a shutter turn to a predetermined position corresponding to shifting of the shutter assembly 4 by using a fulcrum as a turn center; and a plurality of light-distribution-patterns for different purposes are obtained by stopping the shutter moving rod 8 at a predetermined position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両用灯具に関するものであり、詳細には、シャッターが可動とされて、複数の配光特性が得られるものとされた車両用灯具の構成に係る。   The present invention relates to a vehicular lamp, and more particularly, to a configuration of a vehicular lamp in which a shutter is movable and a plurality of light distribution characteristics are obtained.

従来のプロジェクタ型ヘッドライトにおいては、シャッターの形状で、例えば、走行用配光、すれ違い用配光など配光形状が決定されるものであるので、前記シャッターを可動させることで、すれ違い用配光と走行用配光との双方を得られるようにしたものが、数々提案されている。   In conventional projector-type headlights, the shape of the shutter, for example, the light distribution shape such as the light distribution for traveling and the light distribution for passing, is determined. By moving the shutter, the light distribution for passing Many proposals have been made to obtain both a light distribution and a light distribution for traveling.

その１例を示すものが、図１１であり、ヘッドライト９０の主反射面である第一放物系反射面９１の第一焦点ｆ１の位置には電球のフィラメントなど光源９２が設置され、この光源９２からの光は第一前記放物系反射面９１の第二焦点ｆ２の位置に収束するものとなっている。   One example is shown in FIG. 11, and a light source 92 such as a filament of a light bulb is installed at the position of the first focal point f 1 of the first parabolic reflection surface 91 that is the main reflection surface of the headlight 90. The light from the light source 92 converges at the position of the second focal point f2 of the first parabolic reflection surface 91.

そして、前記第二焦点ｆ２に収束する光源像の不要部分を遮蔽するシャッタを設け、このシャッタにより成形された光源像に焦点を有する投影レンズ９４で照射方向Ｘに拡大投影し、例えばすれ違い配光を得るものとされている。このときに、照射光として利用できる光は、光源９２からの光の内の、前記第一放物系反射面９１に反射し、更にシャッタで不要部分を遮蔽された後に投影レンズ９４に入射可能なものであり、ヘッドライト９０としての光束補足率はそれ程に高い値は得られない。   Then, a shutter that shields an unnecessary portion of the light source image that converges on the second focal point f2 is provided, and the light is projected onto the light source image formed by the shutter by the projection lens 94 having a focal point, and is projected in the irradiation direction X. It is supposed to get. At this time, the light that can be used as the irradiation light can be reflected on the first parabolic reflection surface 91 of the light from the light source 92 and can be incident on the projection lens 94 after an unnecessary portion is shielded by the shutter. Therefore, the light beam supplement rate as the headlight 90 is not so high.

この点を補足すべく、図１１では、長軸Ｙを下向きとする第二放物系反射面９５を、前記光源９２からの光が前記第一放物系反射面９１に達しない位置に形成し、その第二放物系反射面９５が第二焦点に集束した光を前記第一放物系反射面９１の下方に設けた放物系反射面９６で照射方向に投射し、光源に対する光束補足率を向上させている。   To supplement this point, in FIG. 11, the second parabolic reflection surface 95 with the major axis Y facing downward is formed at a position where the light from the light source 92 does not reach the first parabolic reflection surface 91. Then, the light whose second parabolic reflection surface 95 is focused on the second focal point is projected in the irradiation direction by the parabolic reflection surface 96 provided below the first parabolic reflection surface 91, and the light flux to the light source The supplement rate is improved.

この場合、前記第二放物系反射面９５が、前記第一放物系反射面９１から第二焦点に向かう光を遮るものとなるので、第二放物系反射面９５の当該の部分に開口部９５ａを設け、前記第一放物系反射面９１から投影レンズ９４への光路を確保する。   In this case, since the second parabolic reflection surface 95 blocks light from the first parabolic reflection surface 91 toward the second focal point, An opening 95 a is provided to secure an optical path from the first parabolic reflection surface 91 to the projection lens 94.

このとき、前記開口部９５ａを、前記第一放物系反射面９１で反射する光源９２からの光のほぼ全てを通過するように形成すると、投影レンズ９４を介して投影される配光特性Ｈ９０の形状は、図１２に示すようにヘッドライト９０の中心線Ｘに対して上下左右全ての方向へ向かう光を含むものとなり、郊外、高速道路の走行に適する走行配光が得られるものとなる。   At this time, if the opening 95a is formed so as to pass almost all of the light from the light source 92 reflected by the first parabolic reflection surface 91, the light distribution characteristic H90 projected through the projection lens 94 is obtained. As shown in FIG. 12, the shape includes light that travels in all directions up, down, left, and right with respect to the center line X of the headlight 90, and a traveling light distribution suitable for traveling on suburbs and highways can be obtained. .

従って、市街地走行時には上向き光が対向車に眩惑を与えるものとなるので、照射方向Ｘの下半部を覆う可動シャッター９３を設置し、市街地走行時には可動シャッター９３で下半部を覆い、上向き光線を遮蔽し、図１３に配光特性Ｈ９１で示すように、すれ違い走行を得られるようにし、すれ違い配光と走行配光との２つの配光形状が得られるようにしている。
特開２００３−１３２７１２号公報 Therefore, since upward light gives glare to oncoming vehicles when traveling in urban areas, a movable shutter 93 that covers the lower half of the irradiation direction X is installed, and when traveling in urban areas, the lower half is covered with the movable shutter 93 and upward rays As shown by the light distribution characteristic H91 in FIG. 13, it is possible to obtain the passing light distribution and to obtain two light distribution shapes of the passing light distribution and the traveling light distribution.
JP 2003-132712 A

しかしながら、近来の交通量の増加などに伴い、上記したように単にすれ違い配光と、走行配光との２種類の切り換えのみでは複雑化した交通状態に対応できないものとなってきている。更に加えてＡＦＳなどと称される操舵装置と連動するヘッドライト、あるいは、貨物の積載量や、発進時の車両の姿勢変化を補正する光軸調整装置などが付加される場合が多く、上記したように単純な構成では満足する配光特性が得られないという問題点を生じるものとなっている。   However, with the recent increase in traffic, etc., as described above, it has become impossible to cope with complicated traffic conditions only by switching between two types of light distribution, that is, passing light distribution and traveling light distribution. In addition, in many cases, a headlight linked to a steering device called AFS or the like, or an optical axis adjustment device that corrects a load amount of a cargo or a posture change of a vehicle at the time of starting is added. As described above, with a simple configuration, a satisfactory light distribution characteristic cannot be obtained.

本発明は上記した課題を解決するための具体的手段として、楕円系反射面と、この楕円系反射面の略第一焦点の位置に設置される光源と、前記楕円系反射面の第二焦点の近傍に前記楕円系反射面の長軸と直交方向に設置され、それぞれが支点を有して所定の範囲を回動自在とするように設けられる第一シャッター、第二シャッター、第三シャッターの３枚のシャッターと、前記シャッターの近傍に焦点を有する投影レンズとから成るヘッドライトであり、前記ヘッドライトには、このヘッドライトを車体に取付けた状態で上下方向に移動可能とされ、移動に応じてそれぞれのシャッターに設けられたピンに順次に当接し前記支点を中心として所定の位置への回動を生じさせるピン駆動アームが設けられた移動用ロッドが設けられており、この移動ロットを所定位置に設定することで前記シャッターのそれぞれを所定位置に設定し、目的の異なる形状とした配光特性が得られることを特徴とするヘッドライトを提供することで、課題を解決するものである。   As specific means for solving the above-described problems, the present invention provides an elliptical reflecting surface, a light source installed at a position of a substantially first focal point of the elliptical reflecting surface, and a second focal point of the elliptical reflecting surface. Of the first shutter, the second shutter, and the third shutter that are installed in the vicinity of the major axis of the elliptical reflecting surface and each has a fulcrum so that a predetermined range can be rotated. The headlight is composed of three shutters and a projection lens having a focal point in the vicinity of the shutter. The headlight is movable in the vertical direction with the headlight attached to the vehicle body. Correspondingly, there is provided a moving rod provided with a pin drive arm that abuts sequentially on the pins provided on the respective shutters and causes rotation to a predetermined position around the fulcrum. The problem is solved by providing a headlight characterized in that each of the shutters is set at a predetermined position by setting a moving lot at a predetermined position, and a light distribution characteristic having a different shape can be obtained. Is.

本発明により、複数のシャッターを組合わせて配光特性の形状を形成する構成と、移動用ロッドにより暫進的に所定位置に前記シャッターを移動させる構成としたことで、例えば、上記した貨物の搭載による車両の前上がりのように定量でない変形状態にも対応可能となり、可変配光型とした車両用灯具の対応範囲を拡げるという優れた効果を奏するものとなる。   According to the present invention, a configuration in which a shape of light distribution characteristics is formed by combining a plurality of shutters, and a configuration in which the shutter is temporarily moved to a predetermined position by a moving rod, for example, It is possible to cope with a non-quantitative deformation state such as a vehicle uphill due to the mounting, and an excellent effect of expanding the corresponding range of the vehicular lamp having a variable light distribution type is obtained.

つぎに、本発明を図に示す実施形に基づいて詳細に説明する。図１に符号１で示すものは、本発明に係るヘッドライトであり、このヘッドライト１は、第一焦点ｆ１に光源２が設置された楕円系反射面３と、前記楕円系反射面３の第二焦点ｆ２の近傍に設けられられたシャッター４と、前記シャッター４の近傍に焦点を有する投影レンズ５とを基本として構成され、いわゆる、プロジェクター型とされている。   Next, the present invention will be described in detail based on the embodiments shown in the drawings. What is denoted by reference numeral 1 in FIG. 1 is a headlight according to the present invention. This headlight 1 includes an elliptical reflecting surface 3 in which a light source 2 is installed at a first focal point f 1, and the elliptical reflecting surface 3. The projector 4 is configured based on a shutter 4 provided in the vicinity of the second focal point f2 and a projection lens 5 having a focal point in the vicinity of the shutter 4, and is a so-called projector type.

ここで、本発明ではシャッター４の構成に工夫を凝らすものであり、まず、シャッター４としては、第一シャッター４１、第二シャッター４２、第三シャッター４３の三枚が使用され、それぞれが可動とされて、それぞれを組合わせることで所望の配光形状が得られるものとされている。   Here, in the present invention, the configuration of the shutter 4 is devised. First, as the shutter 4, the first shutter 41, the second shutter 42, and the third shutter 43 are used, and each of them is movable. In addition, a desired light distribution shape can be obtained by combining them.

図２は、それぞれの前記シャッター４の配置の状態の例を示すものであり、本発明では、まず、それぞれの前記シャッター４（４１〜４３）を所定の位置に保持し、且つ、必要に応じて可動を行わせるための保持枠６が設けられている。そして、前記第二シャッター４２と第三シャッター４３とは支点４ａで前記保持枠６に回動自在に取付けられている。   FIG. 2 shows an example of the state of arrangement of each of the shutters 4. In the present invention, each of the shutters 4 (41 to 43) is first held at a predetermined position, and if necessary. Thus, a holding frame 6 is provided for enabling the movement. The second shutter 42 and the third shutter 43 are rotatably attached to the holding frame 6 at a fulcrum 4a.

これに対して、第一シャッター４１は、前記第二シャッター４２の上端近傍に支点４ｃで取付けられて回動が行われ、第二シャッター４２に設けられた切欠部４ｂを開閉することで、上向き、若しくは、上向きに近い光を制御し、いわゆる、明暗境界線の形状を制御するものとされている。尚、それぞれのシャッター、例えば第一シャッター４１には、駆動が行われないときには、所定の位置を保つためのストッパー４１ａ、スプリング４１ｂが設けられているが、これらの動作については、後にそれぞれの配光特性の説明を行う際に行う。   On the other hand, the first shutter 41 is attached to the vicinity of the upper end of the second shutter 42 at the fulcrum 4c to rotate, and opens and closes the notch 4b provided in the second shutter 42, so that the first shutter 41 faces upward. Alternatively, light that is close to upward is controlled to control the shape of a so-called light / dark boundary line. Each of the shutters, for example, the first shutter 41, is provided with a stopper 41a and a spring 41b for maintaining a predetermined position when the drive is not performed. This is done when explaining the optical characteristics.

そして、本発明では、上記シャッター４を可動させるために、ステッピングモーター７などにより上下方向に正確な位置として移動する移動用ロッド８が設置され、該移動用ロッド８には適宜な位置にピン駆動アーム８ａ〜ピン駆動アーム８ｃが突出させられていて、前記それぞれのシャッター４を順次に移動させ、この実施形態においては、市街地走行など低速走行に適する配光から、順次に高速走行に適する配光に配光形状を変化させて行く。   In the present invention, in order to move the shutter 4, a moving rod 8 that is moved in the vertical direction by a stepping motor 7 or the like is installed, and the moving rod 8 is driven by a pin at an appropriate position. The arm 8a to the pin drive arm 8c are projected, and the respective shutters 4 are sequentially moved. In this embodiment, the light distribution suitable for low-speed traveling such as city traveling is sequentially used. Change the light distribution shape.

図３は、市街地、特に道幅の狭い裏道などを走行するときにも対向車に眩惑を与えないように、上向き光を一切に生じることのない配光を得るときの、各シャッター４（４１〜４３）の配置の例を示すものであり、このときには、前記移動用ロッド８のピン駆動アーム８ａが、第二シャッター４２に設けられた切欠部４ｂを閉止する位置に第一シャッタ４１を支点４ｃで回動させ、前記切欠部４ｂにより生じる上向き光の発生を遮蔽し停止させる。   FIG. 3 shows the shutters 4 (41-41) for obtaining a light distribution that does not generate any upward light so as not to dazzle oncoming vehicles even when traveling in urban areas, particularly on narrow roads. 43) shows an example of the arrangement of the first shutter 41 at a position where the pin driving arm 8a of the moving rod 8 closes the notch 4b provided in the second shutter 42. And the generation of upward light generated by the notch 4b is blocked and stopped.

尚、この実施形態では、この状態を初期位置とし、ステッピングモーター７の駆動は行われず、移動用ロッド８は移動範囲の最上方に位置する状態となっているが、本発明は、これを限定するものではない。また、この初期位置においては、第二シャッター４２、第三シャッター４３には、特にステッピングモーター７の駆動による移動は生じない。   In this embodiment, this state is set as the initial position, the stepping motor 7 is not driven, and the moving rod 8 is positioned at the top of the moving range. However, the present invention limits this. Not what you want. Further, in this initial position, the second shutter 42 and the third shutter 43 are not particularly moved by driving the stepping motor 7.

図４は、各シャッター４を図３に示した状態としたときの、配光特性Ｈ１を示すものであり、この配光特性Ｈ１は上向き光線を全く発生しないものであるので、どのような状況ですれ違うときでも、対向車に対して眩惑を生じさせることはなく、よって、狭く入り組んだ裏道や繁華街などを走行するのに適した市街地配光が得られるものとなる。   FIG. 4 shows the light distribution characteristic H1 when each shutter 4 is in the state shown in FIG. 3, and this light distribution characteristic H1 does not generate an upward ray at all. Even when passing each other, the oncoming vehicle is not dazzled, and therefore, it is possible to obtain an urban light distribution suitable for traveling on a narrow intricate back street or a busy street.

図５は通常のすれ違い用配光に相当する配光特性Ｈ２を得るときの各シャッター４の状況を示すものであり、前記ステッピングモーター７の駆動が行われて、移動用ロッド８が予めに設定された量だけ下降する。よって、移動用ロッド８に付属するピン駆動アーム８ａも下降し、スプリング４２ｃの引っ張り力により第一シャッター４１は、第二シャッター４２に止められている支点４ｃを軸として回動し、前記第二シャッター４２の切欠部４ｂを露出させる。   FIG. 5 shows the state of each shutter 4 when obtaining a light distribution characteristic H2 corresponding to a normal light distribution for passing. The stepping motor 7 is driven and the moving rod 8 is set in advance. Move down by the specified amount. Accordingly, the pin driving arm 8a attached to the moving rod 8 is also lowered, and the first shutter 41 is rotated about the fulcrum 4c fixed to the second shutter 42 by the pulling force of the spring 42c, and the second shutter The notch 4b of the shutter 42 is exposed.

尚、このときの前記第一シャッター４１の回動の角度は、前記第二シャッター４２の面上の適宜位置に取付けられたストッパー４２ａにより、前記切欠部４ｂが露出する量として設定されている。なお、このときに、ピン駆動アーム８ｂが第一シャッター４２に取付けられたスプリング４２ｃに当接し、僅かに圧縮力が加わることもあるが、この第二シャッター４２にはスプリング４２ｄも設けられ、スプリング４２ｄの強度がスプリング４２ｃよりも強くしてあるので、実質的に第一シャッター４２には位置の移動を生じることはない。   The angle of rotation of the first shutter 41 at this time is set as an amount by which the notch 4b is exposed by a stopper 42a attached at an appropriate position on the surface of the second shutter 42. At this time, the pin drive arm 8b abuts against a spring 42c attached to the first shutter 42, and a slight compression force may be applied, but the second shutter 42 is also provided with a spring 42d. Since the strength of 42d is stronger than that of the spring 42c, the position of the first shutter 42 does not substantially move.

図６は、上記図５に示した各シャッター４の配置のときの配光特性Ｈ２を示すものであり、配光特性の左側半部には適宜な上向き光が放射されるものとなり路側にいる歩行者、あるいは、道路標識などの確認が容易となると共に、対抗車線側には、上向き光を生じないものであるので、いわゆる、すれ違い配光として適するものとなる。   FIG. 6 shows the light distribution characteristic H2 when the respective shutters 4 shown in FIG. 5 are arranged. Appropriate upward light is radiated in the left half of the light distribution characteristic and is on the road side. It is easy to confirm a pedestrian or a road sign, and no upward light is generated on the opposite lane side, so that it is suitable as a so-called passing light distribution.

図７は、郊外などにおける比較的高速での走行用に適する配光特性Ｈ３を得るときの、各シャッター４の状況を示すものであり、移動用ロッド８は更に所定の量だけ下降が行われる。これによって、スプリング４２ｃはピン駆動アーム８ｂに更に圧縮され、ついにはスプリング４２ｄの強さを上回り、第二シャッター４２を支点４ａにより回動させるものとなり、ストッパー４２ｂに当接させる。   FIG. 7 shows the state of each shutter 4 when obtaining a light distribution characteristic H3 suitable for traveling at a relatively high speed in a suburb or the like. The moving rod 8 is further lowered by a predetermined amount. . As a result, the spring 42c is further compressed by the pin drive arm 8b, and finally exceeds the strength of the spring 42d, and the second shutter 42 is rotated by the fulcrum 4a and is brought into contact with the stopper 42b.

よって、図８に示すように、配光特性Ｈ３はすれ違い配光特性Ｈ２が全般的に水平線Ｈに対して持ち上がったような形状となり、右半部にも適宜に上向き光を放射するものとなり、左右の視認性が高まり、いわゆる、走行配光として適するものとなる。   Therefore, as shown in FIG. 8, the light distribution characteristic H3 has a shape in which the passing light distribution characteristic H2 is generally raised with respect to the horizontal line H, and appropriately radiates upward light to the right half part. The visibility on the left and right is enhanced, which is suitable as a so-called traveling light distribution.

図９は、本発明により新たに設けられた霧、豪雨など悪天候に有効な悪天候配光Ｈ４を形成するときのそれぞれのシャッター４の配置を示すものであり、この実施形態では、更に移動用ロッド８が降下され、ピン駆動アーム８ｃが第三シャッター４３のピン４３ｃをスプリング４３ｂに抗して押し、第２シャッター４２の上方に、ほぼ水平位置として設定される。   FIG. 9 shows the arrangement of the respective shutters 4 when forming the bad weather light distribution H4 effective in bad weather such as fog and heavy rain newly provided by the present invention. 8 is lowered, and the pin driving arm 8c pushes the pin 43c of the third shutter 43 against the spring 43b, and is set as a substantially horizontal position above the second shutter 42.

このように、上方に設置されたシャッターは下向きの光を遮蔽するものとなるので、図示のように第一シャッター４２に対して、格段に高い位置に設定される第三シャッター４３は車両の正面直前を照射する光を遮蔽するものとなり、図１０に示すような配光形状となる。   As described above, since the shutter installed at the upper side shields the downward light, the third shutter 43 set at a significantly higher position with respect to the first shutter 42 as shown in the figure is the front of the vehicle. The light to be irradiated just before is shielded, and the light distribution shape as shown in FIG. 10 is obtained.

このようにすることで、前記第三シャッター４３により、車両手前の光をカットして、濡れた路面による路面反射を減少させて、対向車への眩惑光を防止する、悪天候配光が得られるものとなる。   In this way, the third shutter 43 cuts light in front of the vehicle, reduces road surface reflections due to wet road surfaces, and prevents bad light distribution to oncoming vehicles. It will be a thing.

尚、本発明においては、シャッター４１〜４３の形状は、この実施形態で説明したものに限定するものではなく、また、シャッターの枚数も限定するものではない。要は、車両が使用される場所の道路状況、天候などに合わせて、最適なものとすればよいものである。   In the present invention, the shapes of the shutters 41 to 43 are not limited to those described in this embodiment, and the number of shutters is not limited. In short, it should be optimal in accordance with the road conditions, weather, etc. of the place where the vehicle is used.

本発明に係るヘッドライトの構成を略示的に示す断面図である。It is sectional drawing which shows schematically the structure of the headlight which concerns on this invention. 本発明に係るヘッドライトの要部であるシャッターの構成を示す正面図である。It is a front view which shows the structure of the shutter which is the principal part of the headlight which concerns on this invention. 本発明に係るヘッドライトにおいて市街地配光を得るときのシャッターの配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of a shutter when obtaining a city area light distribution in the headlight which concerns on this invention. 本発明によって得られる市街地配光の形状を示す説明図である。It is explanatory drawing which shows the shape of the urban area light distribution obtained by this invention. 本発明に係るヘッドライトにおいてすれ違い配光を得るときのシャッターの配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of a shutter when obtaining the passing light distribution in the headlight which concerns on this invention. 本発明によって得られるすれ違い配光の形状を示す説明図である。It is explanatory drawing which shows the shape of the passing light distribution obtained by this invention. 本発明に係るヘッドライトにおいて走行配光を得るときのシャッターの配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of a shutter when obtaining a traveling light distribution in the headlight which concerns on this invention. 本発明によって得られる走行配光の形状を示す説明図である。It is explanatory drawing which shows the shape of the traveling light distribution obtained by this invention. 本発明に係るヘッドライトにおいて悪天候配光を得るときのシャッターの配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of a shutter when obtaining bad weather light distribution in the headlight which concerns on this invention. 本発明によって得られる悪天候配光の形状を示す説明図である。It is explanatory drawing which shows the shape of the bad weather light distribution obtained by this invention. 従来例を示す断面図である。It is sectional drawing which shows a prior art example. 同じ従来例で走行配光としたときの配光形状の例を示す説明図である。It is explanatory drawing which shows the example of a light distribution shape when it is set as traveling light distribution in the same prior art example. 同じ従来例でシャッターを移動しすれ違い配光としたときに配光形状の例を示す説明図である。It is explanatory drawing which shows the example of a light distribution shape, when a shutter is moved by the same conventional example and it is set as a passing light distribution.

符号の説明Explanation of symbols

１…ヘッドライト
２…光源
３…楕円系反射面
４…シャッター
４ａ…支点
４ｂ…切欠部
４ｃ…支点
４１…第一シャッター
４１ａ、…ストッパー
４１ｂ…スプリング
４１ｃ…ピン
４２…第二シャッター
４２ａ、４２ｂ…ストッパー
４２ｃ、４２ｄ…スプリング
４３…第三シャッター
４３ａ…ストッパー
４３ｂ…スプリング
４３ｃ…ピン
５…投影レンズ
６…保持枠
７…ステッピングモーター
８…移動用ロッド
８ａ、８ｂ、８ｃ…ピン駆動アーム DESCRIPTION OF SYMBOLS 1 ... Headlight 2 ... Light source 3 ... Elliptic reflecting surface 4 ... Shutter 4a ... Supporting point 4b ... Notch part 4c ... Supporting point 41 ... First shutter 41a, Stopper 41b ... Spring 41c ... Pin 42 ... Second shutter 42a, 42b ... Stopper 42c, 42d ... Spring 43 ... Third shutter 43a ... Stopper 43b ... Spring 43c ... Pin 5 ... Projection lens 6 ... Holding frame 7 ... Stepping motor 8 ... Moving rod 8a, 8b, 8c ... Pin drive arm

Claims (5)

楕円系反射面と、この楕円系反射面の略第一焦点の位置に設置される光源と、前記楕円系反射面の第二焦点の近傍に前記楕円系反射面の長軸と直交方向に設置され、それぞれが支点を有して所定の範囲を回動自在とするように設けられる第一シャッター、第二シャッター、第三シャッターの３枚のシャッターと、前記シャッターの近傍に焦点を有する投影レンズとから成るヘッドライトであり、前記ヘッドライトには、このヘッドライトを車体に取付けた状態で上下方向に移動可能とされ、移動に応じてそれぞれのシャッターに設けられたピンに順次に当接し前記支点を中心として所定の位置への回動を生じさせるピン駆動アームが設けられた移動用ロッドが設けられており、この移動ロットを所定位置に設定することで前記シャッターのそれぞれを所定位置に設定し、目的の異なる形状とした配光特性が得られることを特徴とするヘッドライト。   An elliptical reflecting surface, a light source installed at the position of the first focal point of the elliptical reflecting surface, and a direction perpendicular to the major axis of the elliptical reflecting surface in the vicinity of the second focal point of the elliptical reflecting surface Each of the three shutters, ie, the first shutter, the second shutter, and the third shutter, which are each provided with a fulcrum so as to be rotatable within a predetermined range, and a projection lens having a focal point in the vicinity of the shutter The headlight is movable in the vertical direction with the headlight attached to the vehicle body, and sequentially contacts the pins provided on the respective shutters according to the movement. There is provided a moving rod provided with a pin drive arm that causes rotation to a predetermined position around a fulcrum. By setting the moving lot at a predetermined position, the shutter is adjusted. Headlight, characterized in that the light distribution characteristic of the, respectively set to a predetermined position, and the different shapes of the object can be obtained. 前記第一シャッターは支点を第二シャッター上に設けられて、このヘッドライトが左側通行用であるときには、前記第二シャッターの右半部に設けられた下方への切欠部を閉鎖しており、前記移動用ロッドによる前記第一シャッターの駆動が行われないときには、前記第二シャッターの左半部との組合せで車両正面よりも下方を水平に照射する市街地走行配光を形成することを特徴とする請求項１記載のヘッドライト。   The first shutter is provided with a fulcrum on the second shutter, and when the headlight is for left-hand traffic, the lower notch provided in the right half of the second shutter is closed, When the first shutter is not driven by the moving rod, a combination of the left half of the second shutter forms a city running light distribution that irradiates horizontally below the front of the vehicle. The headlight according to claim 1. 前記第一シャッターが、前記移動用ロッドによる所定量の駆動が行われたときには、前記第二シャッターの前記切欠部から第一シャッターが退去し、すれ違い配光が形成されることを特徴とする請求項１記載のヘッドライト。   The first shutter is retracted from the cutout portion of the second shutter when the first shutter is driven by a predetermined amount by the moving rod, and a passing light distribution is formed. Item 1. A headlight according to item 1. 前記第二シャッターは、前記楕円系反射面の第二焦点とほぼ直交する位置であり、且つ、前記楕円系反射面から生じる反射光の左外側に支点が設けられ、前記移動用ロッドを更に移動させると前記第二シャッターは左端側を所定位置まで下降させるものとなり、少なくとも左半部が水平線よりも上方を照射する走行配光が形成されることを特徴とする請求項１記載のヘッドライト。   The second shutter is positioned substantially orthogonal to the second focal point of the elliptical reflecting surface, and a fulcrum is provided on the left outer side of the reflected light generated from the elliptical reflecting surface, further moving the moving rod. The headlight according to claim 1, wherein the second shutter lowers the left end side to a predetermined position, and a traveling light distribution is formed in which at least the left half irradiates above the horizontal line. 前記第三シャッターは、前記移動用ロッドを更に下降させたときには、前記第二焦点の位置に上方から突出し、車両直前を照射する下向き光を遮蔽する悪天候配光を形成することを特徴とする請求項１記載のヘッドライト。   The third shutter, when the moving rod is further lowered, protrudes from above to the position of the second focal point, and forms a bad weather light distribution that blocks downward light that irradiates immediately before the vehicle. Item 1. A headlight according to item 1.
JP2005228079A 2005-08-05 2005-08-05 Headlight Expired - Fee Related JP4486007B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008293834A (en) * 2007-05-25 2008-12-04 Ichikoh Ind Ltd Vehicular headlight
JP2010086863A (en) * 2008-10-01 2010-04-15 Koito Mfg Co Ltd Vehicular headlight device
JP2011181233A (en) * 2010-02-26 2011-09-15 Koito Mfg Co Ltd Headlight for vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008293834A (en) * 2007-05-25 2008-12-04 Ichikoh Ind Ltd Vehicular headlight
JP4623056B2 (en) * 2007-05-25 2011-02-02 市光工業株式会社 Vehicle headlamp
JP2010086863A (en) * 2008-10-01 2010-04-15 Koito Mfg Co Ltd Vehicular headlight device
JP2011181233A (en) * 2010-02-26 2011-09-15 Koito Mfg Co Ltd Headlight for vehicle

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