JP3430161B2 - head lamp - Google Patents
head lampInfo
- Publication number
- JP3430161B2 JP3430161B2 JP2001149414A JP2001149414A JP3430161B2 JP 3430161 B2 JP3430161 B2 JP 3430161B2 JP 2001149414 A JP2001149414 A JP 2001149414A JP 2001149414 A JP2001149414 A JP 2001149414A JP 3430161 B2 JP3430161 B2 JP 3430161B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- reflecting
- elliptical
- reflecting portion
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
- F21W2102/19—Arrangement or contour of the emitted light for regions other than high beam or low beam for curves
Description
【０００１】[0001]
【発明の属する技術分野】本発明は車両に取付けられる
ヘッドランプに関するものであり、詳細には、例えばメ
タルハライド放電灯など、すれ違い用フィラメントと走
行用フィラメントとを持たない光源を用いてすれ違い配
光と走行配光との切換を可能とするヘッドランプの構成
に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlamp mounted on a vehicle, and more particularly, to a light source that does not have a passing filament and a traveling filament, such as a metal halide discharge lamp. The present invention relates to a configuration of a headlamp that enables switching between traveling light distribution.
【０００２】[0002]
【従来の技術】従来のこの種のヘッドランプ９０の構成
の例を示すものが図６〜図７であり、図に示すように光
源９１には、この光源９１からの直射光がヘッドランプ
９０外に照射され幻惑光となるのを防止するためのフー
ド９２と共に、例えばソレノイドなど駆動装置９６によ
り２つの位置に設定可能とした可動遮蔽板９３が設けら
れている。2. Description of the Related Art FIGS. 6 to 7 show an example of the structure of a conventional headlamp 90 of this type. As shown in the drawings, a light source 91 emits direct light from the light source 91. A movable shield plate 93 that can be set to two positions by a driving device 96 such as a solenoid is provided together with a hood 92 for preventing the light from being radiated to the outside and becoming a dazzling light.
【０００３】また、前記光源９１の後方に設けられる反
射鏡９４は、図６に示すように中央部が主反射部９４
ａ、上方が副反射部９４ｂ、左右の側方が副反射部９４
ｃとされている。尚、前記光源９１がメタルハライド放
電灯である場合には、下方には黄色など着色された光が
放射されるものとなるので遮光板９５が設けられ、光源
９１の下方には配光形成上必要な一部を除き反射鏡９４
が設けられることはないものとされている。Further, as shown in FIG. 6, the central portion of the reflecting mirror 94 provided behind the light source 91 is the main reflecting portion 94.
a, the sub-reflecting portion 94b on the upper side, and the sub-reflecting portions 94 on the left and right sides
It is assumed to be c. When the light source 91 is a metal halide discharge lamp, light that is colored yellow or the like is emitted downward, and therefore a light shielding plate 95 is provided, and a portion below the light source 91 is necessary for forming light distribution. Reflector 94 except for a part
Is not provided.
【０００４】そして、前記主反射部９４ａは光源９１の
適宜な前方に焦点を有する回転放物面などとして形成さ
れて下向きの反射光を生じるものとされ、前記副反射部
９４ｂおよび副反射部９４ｃは光源９１に焦点を有する
回転放物面などとして形成されて水平方向に向かう反射
光を生じるものとされている。The main reflecting portion 94a is formed as a paraboloid of revolution having a focal point in front of the light source 91 to generate downward reflected light, and the sub reflecting portion 94b and the sub reflecting portion 94c are provided. Is formed as a paraboloid of revolution having a focus on the light source 91 and produces reflected light traveling in the horizontal direction.
【０００５】また、前記可動遮蔽板９３は、駆動装置９
６が動作を行わないときには、光源９１からの光の内の
前記副反射部９４ｂ、副反射部９４ｃに達するものとな
る部分を遮蔽するものとされ、駆動装置９６に動作が行
われたときには反射鏡９４の全面、即ち、主反射部９４
ａと副反射部９４ｂ、９４ｃとの双方に光を与えるもの
とされている。Further, the movable shield plate 93 is a driving device 9
When 6 does not operate, the part of the light from the light source 91 that reaches the sub-reflecting portion 94b and the sub-reflecting portion 94c is shielded, and when the driving device 96 operates, it is reflected. The entire surface of the mirror 94, that is, the main reflecting portion 94
Light is given to both a and the sub-reflecting portions 94b and 94c.
【０００６】このようにすることで、駆動装置９６に動
作が行われないときには、ヘッドランプ９０の配光は、
図８中に配光Ｓで示すように主反射部９４ａからの下向
きの光のみで構成されるものとなり、即ち、すれ違い配
光となる。また、駆動装置９６に動作が行われたときに
は、上記配光Ｓに、副反射部９４ｂからの水平方向への
配光Ｈ１と、副反射部９４ｃからの配光Ｈ２が加算さ
れ、配光Ｓと配光Ｈ１、配光Ｈ２との総合で走行配光が
得られるものとなる。By doing so, when the drive device 96 is not operated, the light distribution of the headlamp 90 is
As indicated by the light distribution S in FIG. 8, the light is composed only of the downward light from the main reflecting portion 94a, that is, the passing light distribution. When the driving device 96 is operated, the light distribution S is added with the light distribution H1 from the sub-reflecting portion 94b in the horizontal direction and the light distribution H2 from the sub-reflecting portion 94c. The traveling light distribution is obtained by combining the light distribution H1 and the light distribution H2.
【０００７】尚、このときに、前記配光Ｈ１は光源９１
の反射像が垂直方向に長くなる主反射部９４ａの上方に
設けられた副反射部９４ｂでスポット的に車両の正面を
照射するものとして形成され、配光Ｈ２は光源９１の反
射像が水平方向に長くなる主反射部９４ａ左右側方に設
けられた副反射部９４ｃで車両の進行方向左右を幅広く
照射するものとして形成される。At this time, the light distribution H1 is generated by the light source 91.
Is formed as a sub-reflecting portion 94b provided above the main reflecting portion 94a which is elongated in the vertical direction so as to illuminate the front of the vehicle in a spotwise manner. The main reflecting portion 94a, which becomes longer, is formed as a sub-reflecting portion 94c provided on the left and right sides so as to illuminate widely in the traveling direction of the vehicle.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、前記し
た従来の構成のヘッドランプ９０においては、反射鏡９
４を主反射部９４ａと副反射部９４ｂとに区画するもの
であり、すれ違い配光のときには副反射部９４ｂを光源
９１から覆うものであるので、通常の走行時のほとんど
の状況で使用されるすれ違い配光が暗くなるという問題
点を生じている。However, in the above-described conventional headlamp 90, the reflecting mirror 9 is used.
4 is divided into a main reflecting portion 94a and a sub-reflecting portion 94b, and covers the sub-reflecting portion 94b from the light source 91 in the passing light distribution. Therefore, it is used in most situations during normal traveling. This causes a problem that the passing light distribution becomes dark.
【０００９】[0009]
【課題を解決するための手段】本発明は前記した従来の
課題を解決するための具体的手段として、光源を略焦点
とする放物面とし、すれ違い配光を形成する主反射部が
略上半部に設けられて成るヘッドランプであり、前記主
反射部の左右には照射方向を正面とする副反射部が設け
られ、前記光源の前上方には前記光源を第一焦点とする
２つの楕円反射面が左右方向に対峙して設けられ、これ
ら楕円反射面の第二焦点は、それぞれの楕円反射面が存
在する側の前記光源の側方近傍に設けられ、前記主反射
部の下方には前記それぞれの楕円反射面の第二焦点を焦
点とし、照射方向を正面とする放物反射面がそれぞれに
設けられると共に、前記光源の近傍には可動遮蔽板が設
けられて、前記光源から前記副反射部に入射する光と、
前記楕円反射面から放物反射面入射する光とが開閉可能
とされていることを特徴とするヘッドランプを提供する
ことで課題を解決するものである。As a concrete means for solving the above-mentioned conventional problems, the present invention uses a parabolic surface having a light source as a substantially focal point, and a main reflecting portion forming a passing light distribution is substantially It is a headlamp that is provided in a half part, and a sub-reflecting portion whose front is in the irradiation direction is provided on the left and right of the main reflecting portion, and two sub-reflecting portions that have the light source as a first focus are provided in front of and above the light source. Elliptical reflecting surfaces are provided facing each other in the left-right direction, and the second focal points of these elliptical reflecting surfaces are provided in the vicinity of the side of the light source on the side where the respective elliptical reflecting surfaces are present, and below the main reflecting portion. Is a focus of the second focus of each of the elliptical reflection surface, each is provided with a parabolic reflection surface with the irradiation direction to the front, a movable shield plate is provided in the vicinity of the light source, from the light source Light incident on the sub-reflector,
The problem is solved by providing a headlamp which is capable of opening and closing the light incident on the parabolic reflection surface from the elliptical reflection surface.
【００１０】[0010]
【発明の実施の形態】つぎに、本発明を図に示す実施形
態に基づいて詳細に説明する。図１〜図４に符号１で示
すものは本発明に係るヘッドランプであり、このヘッド
ランプ１は、光源２と、反射鏡３と、遮光板４と、フー
ド５とが設けられるものである点は同様である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on the embodiments shown in the drawings. 1 to 4 is a headlamp according to the present invention, which is provided with a light source 2, a reflecting mirror 3, a light shielding plate 4, and a hood 5. The points are the same.
【００１１】ここで、本発明においては前記フード５と
一体化されて、一対の楕円反射面６（Ｌ、Ｒ））が光軸
Ｘに対して左右対称として設けられるものであり、前記
楕円反射面６は、それぞれが光源２を第一焦点ｆ１とし
ている。そして、この楕円反射面６が設けられる位置
は、前記光源２の前方で且つ上方であり、前記反射鏡３
には到達することのない範囲であって、即ち、従来はフ
ードにより遮蔽されていた部分である。Here, in the present invention, a pair of elliptical reflecting surfaces 6 (L, R) are integrally provided with the hood 5, and are provided symmetrically with respect to the optical axis X. Each of the surfaces 6 has the light source 2 as the first focus f1. The position where the elliptical reflecting surface 6 is provided is in front of and above the light source 2, and the reflecting mirror 3 is provided.
It is a range that does not reach to, that is, a part that is conventionally shielded by a hood.
【００１２】尚、前記フード５には上記の楕円反射面６
（Ｌ、Ｒ）、以下に説明する放物反射面７（Ｌ，Ｒ）と
共に、光源２から下方へ放射される着色光を遮蔽する遮
光板４、これら楕円反射面６、放物反射面７（Ｌ、
Ｒ）、遮光板４、可動遮蔽板９などが一体化されたもの
を反射鏡３と接合するためのステー１０なども一体化し
て形成しても良いものである。The hood 5 has the elliptical reflecting surface 6 described above.
(L, R), a parabolic reflection surface 7 (L, R) described below, and a light blocking plate 4 for blocking colored light emitted downward from the light source 2, these elliptical reflection surfaces 6, parabolic reflection surfaces 7 (L,
R), the light shielding plate 4, the movable shielding plate 9 and the like are integrally formed, and the stay 10 and the like for joining to the reflecting mirror 3 may be integrally formed.
【００１３】それぞれの前記楕円反射面６の第二焦点ｆ
２は、前記楕円反射面６が光源２の左側に設けられてい
る左楕円反射面６Ｌであれば光源２の略左側方、右楕円
反射面６Ｒであれば光源２の略右側方というように、そ
れぞれが設けられた側に設けられるものとされ、加え
て、前記反射鏡３の下方には、それぞれの前記楕円反射
面６（Ｌ、Ｒ）の第二焦点ｆ２を焦点とする回転放物面
などとして、反射方向を水平とした放物反射面７（Ｌ、
Ｒ）が設けられている。The second focus f of each of the elliptical reflecting surfaces 6
2 is substantially left side of the light source 2 if the elliptical reflection surface 6 is a left elliptical reflection surface 6L provided on the left side of the light source 2, and approximately right side of the light source 2 if the right elliptical reflection surface 6R. , Each of which is provided on the side where they are provided, and in addition, below the reflecting mirror 3, a paraboloid of revolution having the second focus f2 of each of the elliptical reflecting surfaces 6 (L, R) as a focus. As a surface, etc., the parabolic reflection surface 7 (L,
R) is provided.
【００１４】また、本発明のヘッドランプ１においても
前記反射鏡３にすれ違い配光を形成するための主反射部
３ａと、走行配光を形成するための副反射部３ｂとを設
けるものである点は同様であるが、従来例と異なり本発
明では、図２にも示すように副反射部３ｂは主反射部３
ａの左右側方にのみ設けられている。In the headlamp 1 of the present invention, the reflecting mirror 3 is also provided with a main reflecting portion 3a for forming a passing light distribution and a sub-reflecting portion 3b for forming a traveling light distribution. Although the points are the same, unlike the conventional example, in the present invention, as shown in FIG.
It is provided only on the left and right sides of a.
【００１５】加えて、本発明のヘッドランプ１において
も、ソレノイドなど駆動装置８で所定の２位置に移動が
行われる可動遮蔽板９が設けられるものとなるが、この
可動遮蔽板９は、駆動装置８による駆動が行われないと
きには、光源２からの光が前記主反射部３ａの左右側方
に設けられた副反射部３ｂに達するのを遮蔽する側面遮
蔽部９ａと、前記光源２からの光が前記楕円反射面６に
反射して、放物反射面７に向かう光路を遮蔽する下面遮
蔽部９ｂとで構成され、例えば、図５にも示すようにフ
ード５に軸９ｃで回動自在として取付けられている。In addition, also in the headlamp 1 of the present invention, a movable shield plate 9 which is moved to two predetermined positions by a drive device 8 such as a solenoid is provided, and the movable shield plate 9 is driven. When the drive by the device 8 is not performed, the side shields 9a that shield the light from the light source 2 from reaching the sub reflectors 3b provided on the left and right sides of the main reflector 3a, and the light from the light source 2 are provided. Light is reflected by the elliptical reflecting surface 6 and is composed of a lower surface shielding portion 9b that shields an optical path toward the parabolic reflecting surface 7. For example, as shown in FIG. 5, the hood 5 is rotatable about a shaft 9c. Is installed as.
【００１６】そして、前記駆動装置８により駆動が行わ
れたときには、図４に示すように光源２から副反射部３
ｂに至る光路と、楕円反射面６から放物反射面７に至る
光路中から退去して、これら、副反射部３ｂと放物反射
面７とに光を与えるものとする。よって、ヘッドランプ
１として前方に照射される光は反射鏡３の主反射部３ａ
からのすれ違い配光に、それぞれが正面方向に照射され
る副反射部３ｂからの光と、放物反射面７とからの光が
加算され、走行配光が得られる（図７も参照されたい）
のものとなる。When driven by the driving device 8, the light source 2 to the sub-reflecting portion 3 are driven as shown in FIG.
It is assumed that the optical path extending to b and the optical path extending from the elliptical reflecting surface 6 to the parabolic reflecting surface 7 are retreated to give light to the sub-reflecting portion 3b and the parabolic reflecting surface 7. Therefore, the light emitted forward as the headlamp 1 is the main reflection portion 3 a of the reflection mirror 3.
The light from the sub-reflecting portion 3b, which is respectively irradiated in the front direction, and the light from the parabolic reflection surface 7 are added to the passing light distribution from each other to obtain traveling light distribution (see also FIG. 7). )
Will be the one.
【００１７】尚、本発明においても、主反射部３ａの左
右方向に設けられた副反射部３ｂでは、車両の正面左右
方向を幅広く照射する配光（図８における配光Ｈ２に相
当）を形成し、楕円反射面６と放物反射面７との組合せ
の部分では車両に正面方向をスポット的に照射する配光
（図８における配光Ｈ１に相当）を形成するものとされ
ている。Also in the present invention, the sub-reflecting portion 3b provided in the left-right direction of the main reflecting portion 3a forms a light distribution (corresponding to the light distribution H2 in FIG. 8) that widely illuminates the front-right direction of the vehicle. However, a light distribution (corresponding to the light distribution H1 in FIG. 8) that illuminates the vehicle in a spotwise manner in the front direction is formed in a portion where the elliptical reflection surface 6 and the parabolic reflection surface 7 are combined.
【００１８】次いで、上記の構成とした本発明のヘッド
ランプ１の作用および効果について説明を行う。まず、
本発明により副反射部３ｂの内の主反射部３ａの上方に
設けられていた部分が不要となったことで、主反射部３
ａの面積が増し、常時に使用されるすれ違い配光が明る
くなる。Next, the operation and effect of the headlamp 1 of the present invention having the above structure will be described. First,
According to the present invention, since the portion of the sub-reflecting portion 3b provided above the main reflecting portion 3a is unnecessary, the main reflecting portion 3
The area of a increases, and the passing light distribution that is always used becomes brighter.
【００１９】ここで、前記主反射部３ａの左右側方には
依然として副反射部３ｂが設けられているので主反射部
３ａの面積を狭めているように見えるが、車体の左右方
向には寸法的な余裕がある場合が多く延長可能であるの
で、副反射部３ｂは寸法を延長して形成することが可能
であり、実質的な光量損失は生じない。Here, since the sub-reflecting portions 3b are still provided on the left and right sides of the main reflecting portion 3a, it seems that the area of the main reflecting portion 3a is narrowed, but the size in the left-right direction of the vehicle body. In many cases, it is possible to extend the sub-reflecting portion 3b, so that the dimension of the sub-reflecting portion 3b can be extended, and no substantial light amount loss occurs.
【００２０】また、光源２の前方で且つ上方に楕円反射
面６を設け、この楕円反射面６からの反射光を更に放物
反射面７で正面方向に反射するものとして、従来例の主
反射部３ａの上方に設けられた副反射部に換えたこと
で、上記にも説明したように前記楕円反射面６は、従来
は、幻惑光の要因となる部分としてフードにより遮蔽さ
れ使用されることのなかった部分の光を回収し照射光に
変換するものであるので、ヘッドランプ１全体として光
源２に対する光束捕捉率を向上させられるものとなる。Further, an elliptical reflecting surface 6 is provided in front of and above the light source 2, and the reflected light from the elliptic reflecting surface 6 is further reflected by the parabolic reflecting surface 7 in the front direction. By replacing the sub-reflecting portion provided above the portion 3a, as described above, the elliptical reflecting surface 6 is conventionally used by being shielded by the hood as a portion that causes a dazzling light. Since the light of the portion where there is no light is collected and converted into irradiation light, the headlamp 1 as a whole can improve the luminous flux capture rate for the light source 2.
【００２１】このことは、常時に使用されるすれ違い配
光を明るいものとするばかりでなく、例えば、高速道
路、郊外など高速で走行する際に使用される走行配光も
明るくするものであり、即ち、同じ明るさの光源２にお
いても一層に明るいヘッドランプ１とすることを可能と
するものである。This not only makes the passing light distribution that is used all the time bright, but also makes the traveling light distribution that is used when traveling at high speeds such as highways and suburbs, That is, it is possible to make the headlamp 1 even brighter even with the light source 2 having the same brightness.
【００２２】また、前記可動遮蔽板９は、駆動装置８を
含めて、従来例のものとほぼ同様な構成であり、また、
前記楕円反射面６および放物反射面７もフード５と一体
形成が可能な形状であるので、従来例に対して部品コス
トが増したり、或いは、組立工数が増すこともなく、上
記の作用、効果が製品コストの上昇を生じることなく得
られるものとなる。Further, the movable shield plate 9 has almost the same structure as that of the conventional example including the drive unit 8, and
Since the elliptical reflecting surface 6 and the parabolic reflecting surface 7 are also formed so as to be integrally formed with the hood 5, there is no increase in the cost of parts or the number of assembling steps as compared with the conventional example. The effect can be obtained without increasing the product cost.
【００２３】[0023]
【発明の効果】以上に説明したように本発明により、光
源を略焦点とする放物面とし、すれ違い配光を形成する
主反射部が略上半部に設けられて成るヘッドランプであ
り、前記主反射部の左右には照射方向を正面とする副反
射部が設けられ、前記光源の前上方には前記光源を第一
焦点とする２つの楕円反射面が左右方向に対峙して設け
られ、これら楕円反射面の第二焦点は、それぞれの楕円
反射面が存在する側の前記光源の側方近傍に設けられ、
前記主反射部の下方には前記それぞれの楕円反射面の第
二焦点を焦点とし、照射方向を正面とする放物反射面が
それぞれに設けられると共に、前記光源の近傍には可動
遮蔽板が設けられて、前記光源から前記副反射部に入射
する光と、前記楕円反射面から放物反射面入射する光と
が開閉可能とされているヘッドランプとしたことで、従
来は使用されることのなかった光源から上方の前方へ放
射する光を楕円反射面で捕捉し、放物反射面で水平方向
へ投射して走行用配光の形成を行うものとして、第一に
は、ヘッドランプとしては寸法の延長が困難な主反射部
上下方向に設けられていた副反射部を前記楕円反射面と
放物反射面とで代替し、常時に使用されるすれ違い配光
が暗くなることをなくし、この種のヘッドランプの視認
性の向上など、性能向上に極めて優れた効果を奏するも
のである。As described above, according to the present invention, there is provided a headlamp having a parabolic surface having a light source as a substantially focal point, and a main reflection portion for forming a passing light distribution provided in a substantially upper half portion, A sub-reflecting portion whose front is in the irradiation direction is provided on the left and right of the main reflecting portion, and two elliptical reflecting surfaces having the light source as a first focus are provided in front of and above the light source so as to face each other in the left-right direction. , The second focal point of these elliptical reflecting surfaces is provided near the side of the light source on the side where the respective elliptical reflecting surfaces are present,
A parabolic reflection surface having the second focus of each of the elliptical reflection surfaces as a focal point and a front in the irradiation direction is provided below the main reflection portion, and a movable shield plate is provided near the light source. The headlamp is configured so that the light incident from the light source to the sub-reflecting portion and the light incident from the elliptical reflecting surface to the parabolic reflecting surface can be opened and closed. The light emitted upward from the light source was captured by the elliptical reflecting surface and projected in the horizontal direction by the parabolic reflecting surface to form the traveling light distribution. The elliptical reflecting surface and the parabolic reflecting surface replace the sub-reflecting portion provided in the up-down direction of the main reflecting portion, which is difficult to extend in dimension, so that the passing light distribution used at all times does not become dark, and this Improves the visibility of various types of headlamps In which exhibits the excellent effect in improving.
【００２４】また、第二には、上記楕円反射面は上記の
ように従来は使われることのなかった光源光を捕捉する
ものであるので、高速走行時などに選択され、一層に光
量が要求される走行配光も光量の増加を可能とするもの
となり、上記すれ違い配光ばかりでなく走行配光時にも
性能を向上させる優れた効果を奏するものとなる。Secondly, since the elliptical reflecting surface captures the light of the light source which has not been used in the past as described above, it is selected when traveling at high speed and requires a greater amount of light. The traveling light distribution to be performed also enables an increase in the amount of light, and not only the above-mentioned passing light distribution but also an excellent effect of improving the performance during traveling light distribution.
【００２５】更に第三には、本発明により設けられた楕
円反射面および放物反射面はフードとの一体成形が可能
な形状であるので、上記の性能の向上が従来構成に対し
て特に部品点数の増加、組立工数の増加を来すことなく
実施を可能とし、製品のコストパーフォマンスを向上さ
せる優れた効果も奏するものである。Thirdly, since the elliptical reflecting surface and the parabolic reflecting surface provided by the present invention are shaped so that they can be integrally molded with the hood, the above-mentioned improvement in performance is particularly achieved in comparison with the conventional structure. It can be carried out without increasing the number of points and the number of assembling steps, and also has an excellent effect of improving the cost performance of the product.
【図１】 本発明に係るヘッドランプの実施形態を示す
斜視図である。FIG. 1 is a perspective view showing an embodiment of a headlamp according to the present invention.
【図２】 図１のＡ−Ａ線に沿う断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG.
【図３】 図１のＢ−Ｂ線に沿う断面図である。FIG. 3 is a cross-sectional view taken along the line BB of FIG.
【図４】 可動遮蔽板の動作状態を示す説明図である。FIG. 4 is an explanatory diagram showing an operating state of a movable shield plate.
【図５】 本発明に係るヘッドランプの要部を分解した
状態で示す斜視図である。FIG. 5 is a perspective view showing a main part of a headlamp according to the present invention in a disassembled state.
【図６】 従来例を示す正面図である。FIG. 6 is a front view showing a conventional example.
【図７】 図６のＣ−Ｃ線に沿う断面図である。7 is a cross-sectional view taken along the line CC of FIG.
【図８】 この種の可変配光ヘッドランプの配光切り換
え方法を説明する説明図である。FIG. 8 is an explanatory diagram illustrating a light distribution switching method of this type of variable light distribution headlamp.
１……ヘッドランプ ２……光源 ３……反射鏡 ３ａ……主反射部 ３ｂ……副反射部 ４……遮光板 ５……フード ６……楕円反射面 ７……放物反射面 ８……駆動装置 ９……可動遮蔽板 ９ａ……側面遮蔽部 ９ｂ……下面遮蔽部 ９ｃ……軸 １０……ステー 1 ... Headlamp 2 ... Light source 3 ... Reflector 3a ... Main reflector 3b ... Secondary reflection part 4 ... Shading plate 5 ... Hood 6 ... Elliptical reflective surface 7: Parabolic reflection surface 8 ... Drive device 9: Movable shield plate 9a ... Side shield 9b: bottom shield 9c ... axis 10 ... Stay
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ２１Ｙ 101:00 (58)調査した分野(Int.Cl.7，ＤＢ名) F21S 8/10 F21S 8/12 F21V 13/00 F21V 14/00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 identification code FI F21Y 101: 00 (58) Fields investigated (Int.Cl. 7 , DB name) F21S 8/10 F21S 8/12 F21V 13/00 F21V 14/00
Claims (2)
い配光を形成する主反射部が略上半部に設けられて成る
ヘッドランプであり、前記主反射部の左右には照射方向
を正面とする副反射部が設けられ、前記光源の前上方に
は前記光源を第一焦点とする２つの楕円反射面が左右方
向に対峙して設けられ、これら楕円反射面の第二焦点
は、それぞれの楕円反射面が存在する側の前記光源の側
方近傍に設けられ、前記主反射部の下方には前記それぞ
れの楕円反射面の第二焦点を焦点とし、照射方向を正面
とする放物反射面がそれぞれに設けられると共に、前記
光源の近傍には可動遮蔽板が設けられて、前記光源から
前記副反射部に入射する光と、前記楕円反射面から放物
反射面入射する光とが開閉可能とされていることを特徴
とするヘッドランプ。1. A headlamp comprising a parabolic surface having a light source as a substantially focal point and a main reflecting portion for forming a passing light distribution provided in a substantially upper half portion, and an irradiation direction is provided to the left and right of the main reflecting portion. Is provided as a front surface, and two elliptical reflecting surfaces having the light source as a first focus are provided in front of and above the light source so as to face each other in the left-right direction. Provided in the vicinity of the side of the light source on the side where each elliptical reflecting surface is present, and below the main reflecting portion, the second focus of each elliptic reflecting surface is the focal point, and the irradiation direction is the front. An object reflecting surface is provided for each, and a movable shielding plate is provided in the vicinity of the light source, and light that enters the sub-reflecting portion from the light source and light that enters the parabolic reflecting surface from the elliptical reflecting surface are provided. A headlamp that is characterized by being opened and closed.
前記光源からの照射方向への直射光を遮蔽するフードと
一体形成されていることを特徴とする請求項１記載のヘ
ッドランプ。2. The elliptical reflecting surface and the parabolic reflecting surface are
The headlamp according to claim 1, wherein the headlamp is integrally formed with a hood that blocks direct light emitted from the light source in the irradiation direction.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001149414A JP3430161B2 (en) | 2001-05-18 | 2001-05-18 | head lamp |
| DE60132866T DE60132866T2 (en) | 2000-10-06 | 2001-09-18 | headlights |
| EP01122318A EP1195552B1 (en) | 2000-10-06 | 2001-09-18 | Headlamp |
| US09/972,845 US6607294B2 (en) | 2000-10-06 | 2001-10-05 | Headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001149414A JP3430161B2 (en) | 2001-05-18 | 2001-05-18 | head lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002343112A JP2002343112A (en) | 2002-11-29 |
| JP3430161B2 true JP3430161B2 (en) | 2003-07-28 |
Family
ID=18994590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001149414A Expired - Fee Related JP3430161B2 (en) | 2000-10-06 | 2001-05-18 | head lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3430161B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5938914B2 (en) * | 2012-01-17 | 2016-06-22 | 市光工業株式会社 | Vehicle headlamp |
-
2001
- 2001-05-18 JP JP2001149414A patent/JP3430161B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002343112A (en) | 2002-11-29 |
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