JP2003141912A - Headlight for vehicle - Google Patents
Headlight for vehicleInfo
- Publication number
- JP2003141912A JP2003141912A JP2002243564A JP2002243564A JP2003141912A JP 2003141912 A JP2003141912 A JP 2003141912A JP 2002243564 A JP2002243564 A JP 2002243564A JP 2002243564 A JP2002243564 A JP 2002243564A JP 2003141912 A JP2003141912 A JP 2003141912A
- Authority
- JP
- Japan
- Prior art keywords
- reflection surface
- movable
- elliptical
- elliptical reflection
- vehicle
- 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.)
- Granted
Links
- 238000009826 distribution Methods 0.000 claims abstract description 46
- 230000004044 response Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
【０００１】[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、二輪車、一部の三輪車など旋
回時に車体が傾くものとなる車両に適する車両用前照灯
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp, and more particularly to a vehicle headlamp suitable for a vehicle such as a two-wheeled vehicle or a part of a three-wheeled vehicle in which the vehicle body leans when turning. is there.
【０００２】[0002]
【従来の技術】従来の前照灯の構成としてプロジェクタ
型の前照灯９０を例として図１０に示す。前照灯９０
は、光源９１と、この光源９１の位置に第一焦点ｆ１を
有する回転楕円などの楕円系反射面（ellipse group re
flecting surface）９２と、この反射面９２の第二焦点
ｆ２の近傍に設けられたシャッタ９３と、投影レンズ９
４とから構成されている。2. Description of the Related Art FIG. 10 shows a projector type headlight 90 as an example of the structure of a conventional headlight. Headlight 90
Is a light source 91 and an ellipse-based reflective surface (ellipse group re) such as a spheroid having a first focal point f1 at the position of the light source 91.
flecting surface) 92, a shutter 93 provided near the second focal point f2 of the reflecting surface 92, and a projection lens 9
4 and.
【０００３】前記シャッタ９３は前記反射面９２から第
二焦点に収束する断面略円形状の光束中に設けられる。
シャッタ９３によりこの光束の下半部を遮蔽し、上弦の
略半円形の反射光をえる。反射面９２からの光束は第二
焦点で収束した後には上下、左右が反転するので、シャ
ッタ９３により上弦の半円形となった光束の断面形状は
下弦の半円形として投影レンズ９４により照射方向に投
射される。よって、前照灯９０からの照射光には上向き
光を含まないものとなり、図１１に示すような水平方向
に長い略矩形のすれ違い配光Ｓが得られる。The shutter 93 is provided in a light beam having a substantially circular cross section which converges from the reflecting surface 92 to a second focal point.
The lower half of this light flux is blocked by the shutter 93, and the reflected light in the substantially semicircular shape of the upper chord is obtained. Since the light flux from the reflecting surface 92 is vertically and horizontally inverted after being converged at the second focus, the cross-sectional shape of the light flux which has become a semicircle of the upper chord by the shutter 93 is a semicircle of the lower chord and is projected by the projection lens 94 in the irradiation direction. Is projected. Therefore, the irradiation light from the headlight 90 does not include upward light, and a substantially rectangular passing light distribution S that is long in the horizontal direction as shown in FIG. 11 is obtained.
【０００４】[0004]
【発明が解決しようとする課題】二輪車においては、旋
回を行う際には左カーブのときには左方向へと車体が傾
く。このときに、前記前照灯９０は車体に固定されて取
付けられているので、前記すれ違い配光Ｓも図１２に示
すようにスクリーン上の水平軸２０に対し左下がりとな
るように傾く。即ち、これから進行する左前方の方向を
充分に照射できないという問題点を生じている。この問
題点は運転席が旋回に伴い傾く三輪車などでも同様に生
じる。In a two-wheeled vehicle, the vehicle body leans to the left when turning to the left when turning. At this time, since the headlight 90 is fixedly attached to the vehicle body, the passing light distribution S is also inclined to the left with respect to the horizontal axis 20 on the screen as shown in FIG. That is, there is a problem in that the forward left direction cannot be sufficiently irradiated. This problem also occurs in a three-wheeled vehicle in which the driver's seat leans as the driver turns.
【０００５】この解決策として、前照灯９０が、その中
心軸周りを回動して、前記すれ違い配光Ｓを常に地表に
対して傾かないようにする方法も提案されている。しか
し、二輪車の旋回状態は様々である。例えば、比較的に
高速で走行しているときには車体を傾けるのみでハンド
ルはほとんど操作することなく旋回を行うが、低速のと
きは専らにハンドル操作で旋回を行う。そして、実際の
運転においては、高速走行時に旋回することがほとんど
であるから、前照灯の回動をハンドル操作と連動させる
ことでは必ずしも全ての条件を満足させられるものとは
ならず、抜本的な解決策となり得ないのが実情である。As a solution to this problem, a method has been proposed in which the headlight 90 is rotated around its central axis so that the passing light distribution S is not always inclined with respect to the ground surface. However, the turning state of the motorcycle varies. For example, when the vehicle is traveling at a relatively high speed, the vehicle body is only tilted and the steering wheel is turned with almost no operation, but when the vehicle speed is low, the steering wheel is operated exclusively. In actual driving, most of the turning is performed during high-speed running, so interlocking the turning of the headlight with the steering wheel operation does not necessarily satisfy all the conditions. The reality is that no such solution can be achieved.
【０００６】[0006]
【課題を解決するための手段】上記問題点を解決すべ
く、本発明の目的は、旋回時に車体の傾く二輪車などに
おいて、所望の配光形状を所望の方向に得ることができ
る車両用前照灯を提供することである。また、本発明の
目的は、旋回時にも所望の配光形状の水平ラインが常に
地表と平行であることを可能とする車両用前照灯を提供
することである。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、以下の構成の車両に搭載
される車両用前照灯を提供する。すなわち、光源と、投
影レンズと、少なくとも一部に可動部を有する第一楕円
系反射面であって、該第一楕円系反射面は第一焦点を有
し、該第一焦点は光源の位置にあり、該第一楕円系反射
面からの反射光は、投影レンズに入射するよう設定され
ており、該可動部に少なくとも一つの開口部を有する第
一楕円系反射面と、該第一楕円系反射面の可動部に設け
られた該開口部の移動範囲をカバーする領域に対応して
設けられている第二楕円系反射面であって、該第二楕円
系反射面は第一焦点を有し、該第一焦点は光源の位置に
あり、該第二楕円系反射面からの反射光は、投影レンズ
に入射するよう設定されている第二楕円系反射面と、前
記第一楕円系反射面の可動部に接続する駆動部と、該第
一楕円系反射面の可動部を回動可能に所定位置に保持す
る固定部材とを備え、投影レンズからの照射光の配光形
状は、その長辺が水平方向に沿う略矩形となるようにさ
れ、前記第一楕円系反射面可動部は駆動部の駆動によ
り、該配光形状の長辺が灯具の傾斜に依らず、地表に対
して水平を保つように回動が行われ、前記第一楕円系反
射面の開口部を通った光は、第二楕円系反射面の少なく
とも一部により反射され、所望の方向へ集束して照射さ
れることを特徴とする車両用前照灯である。従来旋回時
には車体が傾き、これに伴い車両用前照灯も傾いて配光
形状も傾くものとなるのを、本発明の車両用前照灯によ
れば、前記可動部を回動させることで、地表（路面）と
常に平行な略矩形の配光形状を得る構成を提供して問題
点を解決する。また、可動部と連動するシャッタ部を一
体に設けることで、所望の配光形状を所望の方向に得る
ことが可能となる。さらに、前記第一楕円系反射面の開
口部と第二楕円系反射面の位置の相対的移動を利用して
旋回方向に向けて光を偏寄させることで一層に視認性を
向上させる。よって、この種の車両用前照灯の性能向上
に極めて優れた効果を奏するものである。ここで、本発
明による車両用前照灯は、更に前記第一楕円系反射面の
可動部と連動のシャッタ部を有し、前記第一楕円系反射
面の可動部は駆動部の駆動によりシャッタ部上端が地表
に対して水平を保つように回動が行われることが好まし
い。また、車両用前照灯において、前記第一楕円系反射
面の可動部とシャッタ部は一体に形成されていることが
好ましい。また、本発明の車両用前照灯において、車体
が傾斜した時、開口部７ｃを通って第二楕円系反射面に
よって反射された光は、進行方向の前方を照射する。本
発明の車両用前照灯において、前記第二楕円系反射面の
第二焦点は、投影レンズの焦点付近に位置することが好
ましい。本発明の車両用前照灯において、前記第一楕円
系反射面は固定部を有し、前記第二楕円系反射面の開口
部をカバーする部分は、前記第一楕円系反射面の固定部
と段差部によってつながっていることが好ましい。本車
両用前照灯において、前記第一楕円系反射面は、さら
に、可動部より後方に位置する固定部を有し、該固定部
と可動部は連続した一つの面として機能することが好ま
しい。本車両用前照灯においては、前記第一楕円系反射
面は、第二楕円系反射面の内側に位置することが好まし
い。本車両用前照灯において、第一楕円系反射面の回動
は、前記駆動部を介して、車体傾きセンサの出力、走行
速度センサからの出力、あるいはハンドルの操作角セン
サ、からの出力に応じて行われることが好ましい。本車
両用前照灯において、前記駆動部はモータとかみ合わせ
歯車から成ることが好ましい。In order to solve the above problems, an object of the present invention is to provide a vehicle headlamp capable of obtaining a desired light distribution shape in a desired direction in a two-wheeled vehicle or the like in which the vehicle body leans when turning. Is to provide a light. Another object of the present invention is to provide a vehicle headlamp that enables a horizontal line having a desired light distribution shape to be always parallel to the ground surface even when turning. The present invention provides a vehicle headlamp mounted on a vehicle having the following configuration, as a specific means for solving the above-mentioned conventional problems. That is, a light source, a projection lens, and a first elliptical reflection surface having a movable portion at least in part, the first ellipsoid reflection surface having a first focus, and the first focus being the position of the light source. And the reflected light from the first elliptical reflection surface is set to enter the projection lens, and the first elliptical reflection surface having at least one opening in the movable portion, and the first ellipse reflection surface. A second elliptical reflection surface provided corresponding to a region covering a moving range of the opening provided in the movable portion of the system reflection surface, the second elliptical reflection surface having a first focal point. The first focus is at the position of the light source, and the reflected light from the second ellipsoidal reflection surface is set to enter the projection lens; and the first ellipse system. The drive unit connected to the movable portion of the reflecting surface and the movable portion of the first elliptical reflecting surface are rotatably held at predetermined positions. And a fixed member for irradiating light from the projection lens so that its long side is substantially rectangular along the horizontal direction, and the first elliptical reflection surface movable part is driven by a drive part. , The long side of the light distribution shape is rotated so as to keep horizontal with respect to the ground surface irrespective of the inclination of the lamp, and the light passing through the opening of the first elliptical reflection surface is the second ellipse. A headlight for a vehicle, which is reflected by at least a part of a system reflection surface and is focused and emitted in a desired direction. According to the vehicle headlamp of the present invention, by rotating the movable portion, the conventional vehicle headlamp tilts during turning, and the vehicle headlamp also tilts accordingly. The problem is solved by providing a configuration for obtaining a substantially rectangular light distribution shape that is always parallel to the ground surface (road surface). Further, by integrally providing the shutter unit that interlocks with the movable unit, it becomes possible to obtain a desired light distribution shape in a desired direction. Further, the relative movement of the positions of the opening of the first elliptical reflection surface and the position of the second elliptical reflection surface is used to bias the light toward the turning direction, thereby further improving the visibility. Therefore, it is extremely effective in improving the performance of this type of vehicle headlamp. Here, the vehicular headlamp according to the present invention further includes a shutter section that is interlocked with the movable section of the first elliptical reflection surface, and the movable section of the first elliptical reflection surface is shuttered by driving of a driving section. It is preferable that the upper end of the part is rotated so that the upper end of the part remains horizontal with respect to the ground surface. Further, in the vehicle headlamp, it is preferable that the movable portion of the first elliptical reflection surface and the shutter portion are integrally formed. Further, in the vehicle headlamp of the present invention, when the vehicle body is tilted, the light reflected by the second elliptical reflection surface through the opening 7c illuminates the front in the traveling direction. In the vehicle headlamp of the present invention, it is preferable that the second focal point of the second elliptical reflection surface is located near the focal point of the projection lens. In the vehicle headlamp of the present invention, the first elliptical reflection surface has a fixing portion, and a portion covering an opening of the second elliptical reflection surface is a fixing portion of the first elliptical reflection surface. Is preferably connected by a step. In the present vehicle headlamp, it is preferable that the first elliptical reflection surface further has a fixed portion located behind the movable portion, and the fixed portion and the movable portion function as one continuous surface. . In the vehicle headlamp, it is preferable that the first elliptical reflection surface is located inside the second elliptical reflection surface. In this vehicle headlamp, the rotation of the first elliptical reflection surface is output from the vehicle body tilt sensor, the traveling speed sensor, or the steering wheel operation angle sensor via the drive unit. It is preferable to be carried out accordingly. In the headlight for a vehicle of the present invention, it is preferable that the drive unit includes a motor and a meshing gear.
【０００７】[0007]
【発明の実施の形態】以下、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、２に符号１で示すも
のは本発明に係る第一実施形態の車両用前照灯である。
この車両用前照灯１は光源３と、投影レンズ５と、固定
反射面部４（固定部とも称す）と、固定ヶ所２と、可動
部７とから構成されている。固定反射面部４は、回転楕
円面等の楕円系反射面とされた第一楕円系反射面の一部
として機能し、その第一焦点ｆ１の位置に光源３を配置
し、その第二焦点ｆ２の位置付近に投影レンズ５の焦点
を配置する。固定ヶ所２は、第二楕円系反射面６と固定
部材９とからなる。第二楕円系反射面６の第一焦点の位
置に光源３を配置し、その第二焦点ｆ２の位置に投影レ
ンズ５の焦点を配置する。この車両用前照灯１は基本的
にはプロジェクタ型の前照灯である。固定部材９は、第
二楕円系反射面６と嵌合して固定ヶ所２を構成する。固
定部材９は同時に、第一楕円系反射面の固定反射面部４
と共に可動部７を、車両用前照灯１の中心線Ｚを軸とし
て回動可能に保持する機能を有している。第一楕円系反
射面の固定反射面部４と第二楕円系反射面６とは、可動
部７を所定位置に確実に保持するために段差部を設けて
接続することが望ましい。可動部７側に突起部を、固定
反射面部４側に円周方向に形成した溝部を設けることに
より、固定反射面部４に対し可動部７を回転可能に確実
に保持できるものとなる。図４の車両用前照灯１では、
固定部材９は、投影レンズ５を所定位置に保持する機能
も有しているが、固定部材９は、必ずしも、可動部７を
所定位置に保持する機能と、投影レンズ５を保持する機
能の両方を兼ね備えている必要はない。例えば、可動部
７を所定位置に保持するための部材と、投影レンズを所
定位置に保持するための部材が互いの境界部で接続され
ていてもよい。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on the embodiments shown in the drawings. 1 and 2 is a vehicle headlamp according to the first embodiment of the present invention.
The vehicle headlamp 1 includes a light source 3, a projection lens 5, a fixed reflection surface portion 4 (also referred to as a fixed portion), a fixed portion 2, and a movable portion 7. The fixed reflecting surface portion 4 functions as a part of the first elliptic reflecting surface which is an elliptic reflecting surface such as a spheroidal surface, the light source 3 is arranged at the position of the first focal point f1, and the second focal point f2 thereof. The focus of the projection lens 5 is arranged near the position of. The fixed part 2 is composed of a second elliptical reflection surface 6 and a fixed member 9. The light source 3 is arranged at the position of the first focus of the second ellipsoidal reflection surface 6, and the focus of the projection lens 5 is arranged at the position of the second focus f2 thereof. The vehicle headlamp 1 is basically a projector-type headlamp. The fixing member 9 is fitted with the second elliptical reflection surface 6 to form the fixing point 2. At the same time, the fixing member 9 fixes the fixed reflecting surface portion 4 of the first elliptical reflecting surface.
At the same time, it has a function of holding the movable portion 7 rotatably about the center line Z of the vehicle headlamp 1. It is desirable that the fixed reflecting surface portion 4 of the first elliptic reflecting surface and the second elliptic reflecting surface 6 are connected by providing a step portion so as to securely hold the movable portion 7 at a predetermined position. By providing the protrusion on the movable portion 7 side and the groove formed in the circumferential direction on the fixed reflection surface portion 4 side, the movable portion 7 can be rotatably and securely held with respect to the fixed reflection surface portion 4. In the vehicle headlight 1 of FIG. 4,
The fixed member 9 also has a function of holding the projection lens 5 in a predetermined position, but the fixed member 9 does not necessarily have both a function of holding the movable portion 7 in a predetermined position and a function of holding the projection lens 5. It is not necessary to have both. For example, a member for holding the movable portion 7 at a predetermined position and a member for holding the projection lens at the predetermined position may be connected to each other at the boundary portion.
【０００８】可動部７は、前記第一楕円系反射面の一部
を構成する可動反射面部７ａと、配光を形成するための
シャッタ部７ｂ（ロービーム用の場合）と、前記可動反
射面部７ａの一部を切欠いて形成した開口部７ｃとから
構成されている。可動部７は前記固定ヶ所２に対して、
前記車両用前照灯１の中心線Ｚを軸として回動自在とな
るように取付けられている。なお、ハイビーム用として
車両用前照灯１を使用する場合は、シャッタ部７ｂは無
くても良い。また、前記第二楕円系反射面６は、前記第
一楕円系反射面４の外側に位置し、可動する第一楕円系
反射面に設けられた前記開口部７ｃの移動範囲をカバー
する領域に設けられている。また、開口部７ｃの形状は
所望のものであってよく、図６はその例を示す。The movable portion 7 is a movable reflecting surface portion 7a forming a part of the first elliptic reflecting surface, a shutter portion 7b for forming a light distribution (for low beam), and the movable reflecting surface portion 7a. And an opening 7c formed by cutting out a part of the. The movable part 7 is
The vehicle headlight 1 is mounted so as to be rotatable about the center line Z. When the vehicle headlamp 1 is used for high beams, the shutter section 7b may be omitted. The second elliptical reflection surface 6 is located outside the first elliptical reflection surface 4 and covers a moving range of the opening 7c provided in the movable first elliptical reflection surface 4. It is provided. The shape of the opening 7c may be any desired shape, and FIG. 6 shows an example thereof.
【０００９】ここで、前記第一楕円系反射面の固定反射
面部４と可動反射面部７ａとは、車両用灯具１として必
要充分な大きさを有するように形成された一つの楕円系
反射面を、前記中心線Ｚに直交する面で切断して形成さ
れている。従って、前記固定反射面部４と可動反射面部
７ａとが組合わされた状態では、上記した開口部７ｃの
部分を除いては、光源３に対して一体の楕円反射面と同
じ作用を行うものとなる。本発明において、「楕円系反
射面」という用語は、全体として楕円叉は楕円に類似す
る曲面、例えば、回転楕円面、複合楕円面、楕円系自由
曲面、あるいはその組み合わせを意味する。楕円系反射
面の第一焦点に光源が位置している時、その光源から出
た光は、その楕円系反射面の第二焦点に集束する。Here, the fixed reflecting surface portion 4 and the movable reflecting surface portion 7a of the first elliptic reflecting surface are one elliptic reflecting surface formed so as to have a necessary and sufficient size for the vehicular lamp 1. , Is formed by cutting along a plane orthogonal to the center line Z. Therefore, in the state where the fixed reflecting surface portion 4 and the movable reflecting surface portion 7a are combined with each other, the same action as that of the elliptic reflecting surface integrated with the light source 3 is performed except for the above-mentioned opening portion 7c. . In the present invention, the term “elliptic reflecting surface” means a curved surface that is similar to an ellipse or an ellipse as a whole, for example, a spheroidal surface, a compound elliptic surface, an elliptic free-form surface, or a combination thereof. When the light source is located at the first focal point of the elliptical reflecting surface, the light emitted from the light source is focused at the second focal point of the elliptic reflecting surface.
【００１０】そして、固定反射面部４と可動反射面部７
ａとが組合わされて構成される第一楕円系反射面の第二
焦点ｆ２及び前記シャッタ部７ｂは、投影レンズ５の焦
点近傍に位置するように設けられている。また、上記の
ように組合わされた第一楕円系反射面の固定反射面部４
と可動反射面部７ａとには初期位置が設定されている。
この初期位置は、この車両用前照灯１を車体１０（図４
（Ａ）（１）参照）に取付け、且つ、車体が傾いていな
い状態で前記シャッタ部７ｂが前記した楕円反射面４か
らの反射光を遮蔽することにより路面に対して水平な明
暗境界線Ｈｈを与える位置（図４（Ａ）（２）参照）と
されている。なお、シャッタ部７ｂ上端は、直線状とし
たが、実際には希望する配光パターンに合わせて種々の
形状のカットラインに形成してもよい。例えば、左側通
行用の自動車等四輪用灯具として車両用前照灯１を使用
する場合は、配光パターンが左１５°上がり部分を含む
ように、運転席側から見た状態で、シャッタ部７ｂ上端
右半分が、上端の中心から右下方へ１５度傾斜する一辺
となるよう設定する。The fixed reflecting surface portion 4 and the movable reflecting surface portion 7
The second focal point f2 of the first ellipsoidal reflecting surface formed by combining a and a and the shutter portion 7b are provided so as to be located near the focal point of the projection lens 5. Further, the fixed reflecting surface portion 4 of the first elliptic reflecting surface combined as described above.
An initial position is set for the movable reflection surface portion 7a.
At this initial position, the vehicle headlamp 1 is mounted on the vehicle body 10 (see FIG.
(A) (1)), and the shutter portion 7b shields the reflected light from the elliptical reflecting surface 4 in a state where the vehicle body is not tilted, so that the bright / dark boundary line Hh horizontal to the road surface. Is given (see FIG. 4 (A) (2)). Although the upper end of the shutter portion 7b has a linear shape, it may actually be formed into cut lines of various shapes according to a desired light distribution pattern. For example, when the vehicle headlamp 1 is used as a four-wheeled lamp for an automobile such as a left-hand traffic vehicle, the shutter unit is viewed from the driver's seat side so that the light distribution pattern includes a left 15 ° rising portion. The right half of the upper end of 7b is set to be one side that inclines downward by 15 degrees from the center of the upper end.
【００１１】前記可動部７には開口部７ｃが設けられ
る。本発明の第一実施形態では前記開口部７ｃは上記初
期位置における反射面部７ａの上方となる位置に設けら
れる。前記固定ヶ所２側には前記開口部７ｃに対応し
て、後に説明するように車体１０の傾きに応じて所定方
向に反射光を生じるものとした第二楕円系反射面６が設
けられている。The movable portion 7 is provided with an opening 7c. In the first embodiment of the present invention, the opening 7c is provided at a position above the reflecting surface 7a in the initial position. A second elliptical reflection surface 6 is provided on the fixed portion 2 side so as to generate reflected light in a predetermined direction according to the inclination of the vehicle body 10 as described later, corresponding to the opening 7c. .
【００１２】前記可動部７には、例えば車体の傾斜を検
出する傾斜センサ（図示せず）からの信号に応じて回転
するモータ８ａと歯車８ｂとによる駆動部８が設けら
れ、車体１０が傾斜した場合に可動部７を本車両用前照
灯１の中心線Ｚを軸として回動させる。The movable portion 7 is provided with a drive portion 8 including a motor 8a and a gear 8b which rotate in response to a signal from an inclination sensor (not shown) for detecting the inclination of the vehicle body, and the vehicle body 10 is inclined. In this case, the movable portion 7 is rotated around the center line Z of the vehicle headlamp 1 as an axis.
【００１３】図４（１）は、前記可動部７の車体１０の
傾斜に対する動作を模式的に示すものである。図４
（Ａ）（１）は車体１０の直進時の状態を示し、このと
きには車体１０は傾いていないので、可動部７は固定反
射面部４に対し初期位置の状態にある。この時、前記開
口部７ｃは第二楕円系反射面６の中央部６ｃに位置す
る。尚、図４（Ａ）（１）から４（Ｃ）（１）において
は車体１０、可動部７、第二楕円系反射面６などは運転
席側から見る状態で示してある。FIG. 4 (1) schematically shows the operation of the movable portion 7 with respect to the inclination of the vehicle body 10. Figure 4
(A) (1) shows the state when the vehicle body 10 is traveling straight, and since the vehicle body 10 is not tilted at this time, the movable portion 7 is in the initial position with respect to the fixed reflection surface portion 4. At this time, the opening 7c is located at the central portion 6c of the second elliptical reflection surface 6. 4 (A) (1) to 4 (C) (1), the vehicle body 10, the movable portion 7, the second elliptical reflection surface 6 and the like are shown as viewed from the driver's seat side.
【００１４】本発明においては、この直進状態において
は、車両用前照灯１は、以後の進行方向である車体１０
の正面方向を明るく照射するように構成されていればよ
い。ここで、前記第二楕円系反射面６の中央部６ｃはそ
の第一焦点の位置に光源３が配置されている形状であ
り、前記固定反射面部４の第二焦点ｆ２の近傍に第二焦
点が位置する回転楕円面などとして形成されている。こ
の中央部６ｃからの反射光も図４（Ａ）（２）に補助配
光Ｈ６Ｃで示すように、前記第一楕円系反射面の固定反
射面部４、可動反射面部７の反射面部７ａ、および、シ
ャッタ部７ｂにより形成される水平方向に長い略矩形の
主配光Ｈｍと同様、車体１０の正面方向を水平な明暗境
界線Ｈｈを有して照射する。According to the present invention, in this straight traveling state, the vehicle headlamp 1 has the vehicle body 10 which is the traveling direction thereafter.
It suffices if it is configured to illuminate the front direction of the. Here, the central portion 6c of the second elliptical reflecting surface 6 has a shape in which the light source 3 is arranged at the position of the first focal point thereof, and the second focal point is near the second focal point f2 of the fixed reflecting surface portion 4. Is formed as a spheroid on which is located. The reflected light from the central portion 6c also includes the fixed reflecting surface portion 4 of the first elliptical reflecting surface, the reflecting surface portion 7a of the movable reflecting surface portion 7, and the reflected light portion 7a of the movable reflecting surface portion 7, as shown by an auxiliary light distribution H6C in FIGS. Similarly to the substantially rectangular main light distribution Hm that is long in the horizontal direction and is formed by the shutter portion 7b, the front direction of the vehicle body 10 is illuminated with a horizontal bright / dark boundary line Hh.
【００１５】図４（Ｂ）（１）は車体１０が左旋回を行
っているときの状態を示すものであり、このときには車
体は進行方向に向かって左側に傾けられる。このように
車体１０が傾くと、例えば車体傾きセンサ（図示せず）
はその傾きを検出し、駆動部８により可動部７を固定反
射面部４に対して回動する。例えば、左旋回時には、進
行方向に向かって、時計回りに可動部７を回動すること
により、前記シャッタ部７ｂを水平な明暗境界線Ｈｈを
形成する位置とする。従って、前記第一楕円系反射面の
固定反射面部４、可動部７の一部である第一楕円系反射
面の可動反射面部７ａ、および、シャッタ部７ｂにより
形成される主配光Ｈｍは、車体１０が傾いた状態におい
ても、上記に説明した直進時と同じ形状の配光が得られ
る。FIG. 4 (B) (1) shows a state in which the vehicle body 10 is turning to the left. At this time, the vehicle body is tilted leftward in the traveling direction. When the vehicle body 10 tilts in this way, for example, a vehicle body tilt sensor (not shown)
Detects the inclination and causes the drive unit 8 to rotate the movable unit 7 with respect to the fixed reflection surface unit 4. For example, when turning left, the movable portion 7 is rotated clockwise in the traveling direction to bring the shutter portion 7b to a position where a horizontal bright / dark boundary line Hh is formed. Therefore, the main light distribution Hm formed by the fixed reflecting surface portion 4 of the first elliptic reflecting surface, the movable reflecting surface portion 7a of the first elliptic reflecting surface that is a part of the movable portion 7, and the shutter portion 7b is Even when the vehicle body 10 is tilted, the light distribution having the same shape as that of the above-described straight traveling can be obtained.
【００１６】ここで、前記開口部７ｃと第二楕円系反射
面６との位置関係について考察してみると、固定反射面
部４は車体１０の傾斜につれて傾斜するのに対し、可動
部７は駆動部８の作動により正立位置を保つ。したがっ
て、前記開口部７ｃを基準として見れば補助反射面６側
が移動するものとなる。Now, considering the positional relationship between the opening 7c and the second elliptical reflection surface 6, the fixed reflection surface portion 4 is inclined as the vehicle body 10 is inclined, while the movable portion 7 is driven. The upright position is maintained by the operation of the portion 8. Therefore, when viewed with the opening 7c as the reference, the side of the auxiliary reflection surface 6 moves.
【００１７】本発明では、前記第二楕円系反射面６に対
して、車体１０が左に傾いたときに前記開口部７ｃを通
った光は、第二楕円系反射面６の左対応部６ｌに到達す
る。左対応部６ｌからの反射光は、所定領域即ち左側前
方を集中的に照射する。このようにすることで、この左
対応部６ｌからの補助配光Ｈ６Ｌは図４（Ｂ）（２）に
示すように主配光Ｈｍの垂直中心線Ｖに対して左側に位
置する。即ち、これからの車体１０の進行方向を明るく
照射する。In the present invention, the light passing through the opening 7c when the vehicle body 10 is tilted to the left with respect to the second elliptical reflection surface 6 has the left corresponding portion 6l of the second elliptical reflection surface 6. To reach. The reflected light from the left corresponding portion 6l intensively irradiates a predetermined area, that is, the left front side. By doing so, the auxiliary light distribution H6L from the left corresponding portion 6l is located on the left side with respect to the vertical center line V of the main light distribution Hm, as shown in FIG. That is, the traveling direction of the vehicle body 10 from now on is illuminated brightly.
【００１８】図４（Ｃ）（１）は車体１０が右旋回を行
うときの状態を示すものである。上記で説明したのと同
様な作用により車体１０が右に傾いたときには、前記開
口部７ｃを通った光は第二楕円系反射面６の右対応部６
ｒに到達する。右対応部６ｒからの反射光は、所定領域
即ち右側前方を集中的に照射する。図４（Ｃ）（２）に
示すように補助配光Ｈ６Ｒは主配光Ｈｍの垂直中心線Ｖ
に対して右側の所定領域を明るく照射する。なお、第二
楕円系反射面６の中央部６ｃ、左対応部６ｌ、右対応部
６ｒは、単一の楕円系反射面として形成されてもよい
し、異なる複数の楕円系反射面の組み合わせであっても
よい。また、可動部の移動に伴い、第二楕円系反射面６
からの反射光により構成される照射領域は、徐々に移動
していくことが望ましいので、第二楕円系反射面６の各
構成要素は、中央部６ｃ、左対応部６ｌ、右対応部６ｒ
の３つに限られるものではなく、適切な数で設けられ、
或いは連続した一つの面の一部として構成される。複数
の楕円系反射面を組み合わせる場合、第二楕円系反射面
６の各構成要素の境界部は外見上目立たない程度の連続
性を持つものとするのことが望ましい。FIG. 4C (1) shows a state in which the vehicle body 10 is turning right. When the vehicle body 10 leans to the right by the same operation as described above, the light passing through the opening 7c receives the right corresponding portion 6 of the second elliptic reflection surface 6.
reach r. The reflected light from the right corresponding portion 6r intensively irradiates a predetermined area, that is, the right front side. As shown in FIGS. 4C and 4B, the auxiliary light distribution H6R is the vertical center line V of the main light distribution Hm.
The predetermined area on the right side is illuminated brightly. The central portion 6c, the left corresponding portion 6l, and the right corresponding portion 6r of the second elliptic reflecting surface 6 may be formed as a single elliptic reflecting surface, or may be a combination of a plurality of different elliptic reflecting surfaces. It may be. In addition, the second elliptical reflecting surface 6 is moved along with the movement of the movable part.
Since it is desirable that the irradiation region formed by the reflected light from the gradual movement gradually move, each component of the second elliptical reflection surface 6 has a central portion 6c, a left corresponding portion 6l, and a right corresponding portion 6r.
It is not limited to three, but an appropriate number is provided,
Alternatively, it is configured as a part of one continuous surface. When a plurality of elliptical reflection surfaces are combined, it is desirable that the boundary portion between the constituent elements of the second elliptical reflection surface 6 has continuity that is visually inconspicuous.
【００１９】本発明の車両用前照灯１によれば、旋回時
に車体１０が傾く二輪車などの車両にあっても、車体１
０の傾きにつれて配光のカットオフラインが傾くことな
く、常に路面と平行な状態を保つ。したがって、視認性
が向上するばかりでなく、可動反射面７の開口部７ｃと
第二楕円系反射面６との相互の位置関係を変化させるこ
とで旋回方向、言い換えれば、進路方向が明るく照射さ
れ、一層に視認性が向上するものとなる。According to the vehicle headlamp 1 of the present invention, even if the vehicle body 10 inclines when the vehicle turns, such as a motorcycle, the vehicle body 1
The cutoff line of the light distribution does not incline with the inclination of 0, and always maintains a state parallel to the road surface. Therefore, not only the visibility is improved, but also by changing the mutual positional relationship between the opening 7c of the movable reflecting surface 7 and the second elliptic reflecting surface 6, the turning direction, in other words, the course direction is illuminated brightly. Therefore, the visibility is further improved.
【００２０】図５〜６に本発明の第二実施形態に係る車
両用前照灯２０を示す。車両用前照灯２０は、光源３
と、投影レンズ５と、第一楕円系反射面７（可動部ある
いは可動反射面７とも称す）と、第二楕円系反射面６
と、シャッタ部７ｂと、駆動部８と、固定部材９とで構
成される。第一楕円系反射面７はその第一焦点ｆ１の位
置に光源３が配置され、その第二焦点ｆ２を投影レンズ
５の焦点付近に配置している。第一楕円系反射面７は可
動反射面部７ａからなる。第二楕円系反射面６は、第一
楕円系反射面７の外側に位置し、その第一焦点ｆ１の位
置に光源３が配置され、その第二焦点ｆ２を投影レンズ
５の焦点付近に配置している。シャッタ部７ｂは前記第
一楕円系反射面７の可動反射面部７ａと一体として形成
されている。駆動部８は第一楕円系反射面７に接続され
それを駆動する。第一実施形態と同一の個所については
説明を省略する。本実施形態の車両用前照灯２０と第一
実施形態の車両用前照灯１では、開口部７ｃの位置が異
なっており、これに伴い第一楕円系反射面７、第二楕円
系反射面６の構成が第１実施形態と異なっている。5 to 6 show a vehicle headlamp 20 according to a second embodiment of the present invention. The vehicle headlamp 20 includes a light source 3
A projection lens 5, a first elliptical reflection surface 7 (also referred to as a movable portion or a movable reflection surface 7), and a second elliptical reflection surface 6
A shutter portion 7b, a drive portion 8 and a fixing member 9. The light source 3 is arranged at the position of the first focal point f1 of the first elliptical reflecting surface 7, and the second focal point f2 thereof is arranged near the focal point of the projection lens 5. The first elliptical reflection surface 7 is composed of a movable reflection surface portion 7a. The second elliptical reflection surface 6 is located outside the first elliptical reflection surface 7, the light source 3 is arranged at the position of the first focal point f1, and the second focal point f2 is arranged near the focal point of the projection lens 5. is doing. The shutter portion 7b is formed integrally with the movable reflecting surface portion 7a of the first elliptic reflecting surface 7. The drive unit 8 is connected to the first elliptic reflection surface 7 and drives it. Description of the same parts as those in the first embodiment will be omitted. The vehicular headlamp 20 of the present embodiment and the vehicular headlamp 1 of the first embodiment have different positions of the opening 7c, and accordingly, the first elliptical reflection surface 7 and the second elliptic reflection The structure of the surface 6 is different from that of the first embodiment.
【００２１】本実施形態において、車両用前照灯２０の
開口部７ｃは、第一楕円系反射面７の側方に一対すなわ
ち両側方に１つずつ設けられている。また、第二楕円系
反射面６は、開口部７ｃの可動範囲をカバーする位置に
設けられるため、これに対応して車両用前照灯２０にお
いては側方の両側に設けられている。また、第一楕円系
反射面は、固定反射面部４を有さず、可動反射面部７ａ
のみから成っている。車両用前照灯２０において、固定
ヶ所２は第二楕円系反射面６及び固定部材９である。可
動反射面部７ａは、シャッタ部７ｂと一体となってお
り、駆動部８の駆動により、固定部材９に対して、前記
車両用前照灯２０の中心線Ｚを軸として回動する。可動
部７の開口部７ｃの大きさは、第二楕円系反射面６の反
射光に要求される照射領域と照度分布に応じて適宜決定
される。図６では、開口部７ｃを大きく取り、リム部分
７ｄのみを残すものとして示している。しかし本発明に
おいては、開口部７ｃの形状はこれに限られるものでは
ない。In this embodiment, a pair of openings 7c of the vehicular headlamp 20 are provided laterally of the first elliptic reflection surface 7, that is, one opening is provided at each side. In addition, the second elliptical reflection surface 6 is provided at a position that covers the movable range of the opening 7c, and accordingly, the second ellipsoidal reflection surface 6 is provided on both sides of the vehicle headlight 20. Further, the first elliptical reflection surface does not have the fixed reflection surface portion 4 but the movable reflection surface portion 7a.
Made of chisel. In the vehicle headlamp 20, the fixing points 2 are the second elliptical reflection surface 6 and the fixing member 9. The movable reflecting surface portion 7a is integrated with the shutter portion 7b, and is driven by the driving portion 8 to rotate about the center line Z of the vehicle headlamp 20 with respect to the fixed member 9. The size of the opening 7c of the movable portion 7 is appropriately determined according to the irradiation area and the illuminance distribution required for the reflected light of the second elliptical reflection surface 6. In FIG. 6, the opening 7c is shown to be large and only the rim portion 7d is left. However, in the present invention, the shape of the opening 7c is not limited to this.
【００２２】なお、第二楕円系反射面６は、全周に亘っ
て設けられていても良いが、軽量化、コスト等の観点か
ら、図６のように必要な部分にのみ設けられることが好
ましい。また、固定部材９は、第二楕円系反射面６との
間に可動部７を挟みこみ、可動部７を、前照灯２０の中
心線Zを軸とする回動可能な状態で所定位置に保持して
いる。第一楕円系反射面７のリム部７ｄが第二楕円系反
射面６の光源側周縁部６ｄに押し当てられた状態で、固
定部材９は、第二楕円系反射面６の投影レンズ側周縁部
でネジ等で固定される。The second elliptical reflecting surface 6 may be provided over the entire circumference, but from the viewpoint of weight reduction, cost, etc., it may be provided only in a necessary portion as shown in FIG. preferable. Further, the fixed member 9 sandwiches the movable portion 7 between the fixed member 9 and the second elliptic reflection surface 6, and the movable portion 7 is rotatable at a predetermined position about the center line Z of the headlight 20. Hold on. In a state where the rim portion 7d of the first elliptic reflection surface 7 is pressed against the light source side peripheral portion 6d of the second elliptical reflection surface 6, the fixing member 9 has the projection lens side peripheral edge of the second elliptical reflection surface 6. It is fixed with screws, etc.
【００２３】図８は、前記可動部７の車体１０の傾斜に
対する動作を模式的に示すものである。車体１０につい
ては、その垂直軸方向のみを示す。まず、図８（Ａ）は
車体１０の直進時の状態を示す。このときには図８
（Ａ）（１）に示すように、車体１０は傾いていないの
で、可動部７は固定部材９に対し初期位置の状態にあ
る。図８（Ａ）（２）に示すように、前記開口部７ｃは
第二楕円系反射面６の中央部６ｃ１、６ｃ２と向き合う
ように位置する。尚、図８においては可動部７、第二楕
円系反射面６などは運転席側から見る状態で示してあ
る。FIG. 8 schematically shows the operation of the movable portion 7 with respect to the inclination of the vehicle body 10. For the vehicle body 10, only the vertical axis direction is shown. First, FIG. 8A shows a state where the vehicle body 10 is traveling straight. At this time,
As shown in (A) and (1), since the vehicle body 10 is not tilted, the movable portion 7 is in the initial position with respect to the fixed member 9. As shown in FIGS. 8A and 8B, the opening 7c is located so as to face the central portions 6c1 and 6c2 of the second elliptic reflection surface 6. In addition, in FIG. 8, the movable part 7, the second elliptical reflection surface 6 and the like are shown as viewed from the driver's seat side.
【００２４】本発明においては、この直進状態において
は、車両用前照灯２０は、以後の進行方向である車体１
０の正面方向を明るく照射するように構成されていれば
よい。ここで、前記第二楕円系反射面６の中央部６ｃ
１、６ｃ２はその第一焦点の位置に光源３が配置され、
前記投影レンズ５の焦点ｆ２の近傍に第二焦点が位置す
る回転楕円面などとして形成されている。よって、この
中央部６ｃ１、６ｃ２からの反射光も図８（Ａ）（３）
に補助配光Ｈ６Ｃで示すように、前記第一楕円系反射面
７の可動反射面部７ａ、および、シャッタ部７ｂにより
形成される主配光Ｈｍと同様、車体１０の正面方向を水
平な明暗境界線Ｈｈを有して照射する。According to the present invention, in this straight traveling state, the vehicle headlamp 20 has the vehicle body 1 which is the traveling direction thereafter.
It suffices that the front direction of 0 is illuminated brightly. Here, the central portion 6c of the second elliptical reflection surface 6
1, 6c2 has the light source 3 arranged at the position of its first focal point,
It is formed as a spheroid having a second focus located near the focus f2 of the projection lens 5. Therefore, the reflected light from the central portions 6c1 and 6c2 is also shown in FIG.
As indicated by the auxiliary light distribution H6C, as in the case of the main light distribution Hm formed by the movable reflection surface portion 7a of the first elliptical reflection surface 7 and the shutter portion 7b, a horizontal light / dark boundary in the front direction of the vehicle body 10 is formed. Irradiate with line Hh.
【００２５】図８（Ｂ）は車体１０が左旋回を行ってい
るときの状態を示すものである。このときには車体は進
行方向に向かって左側に傾けられ、駆動部８により可動
部７の固定部材９に対する回動が行われる。例えば、左
旋回時には、進行方向に向かって、時計回りに可動部７
を回動することにより、前記シャッタ部７ｂを水平な明
暗境界線Ｈｈを形成する位置とする。従って、前記第一
楕円系反射面７の可動反射面部７ａ、および、シャッタ
部７ｂにより形成される主配光Ｈｍは、車体１０が傾い
た状態においても、上記に説明した直進時と同じ形状の
配光が得られるものとなる。FIG. 8B shows a state in which the vehicle body 10 is turning left. At this time, the vehicle body is tilted leftward in the traveling direction, and the drive unit 8 causes the movable unit 7 to rotate with respect to the fixed member 9. For example, when turning to the left, the movable portion 7 is turned clockwise in the traveling direction.
The shutter portion 7b is brought to a position where a horizontal bright / dark boundary line Hh is formed by rotating. Therefore, the main light distribution Hm formed by the movable reflecting surface portion 7a of the first elliptic reflecting surface 7 and the shutter portion 7b has the same shape as that when traveling straight ahead even when the vehicle body 10 is tilted. The light distribution can be obtained.
【００２６】ここで、前記開口部７ｃと第二楕円系反射
面６との位置関係について考察してみると、固定部材９
は車体１０の傾斜につれて傾斜するのに対し、可動部７
は駆動部８の作動により正立位置を保つものであるの
で、前記開口部７ｃは第二楕円系反射面６の左側上方部
分６ｌ１及び右側下方部分６ｌ２と向き合う。Now, considering the positional relationship between the opening 7c and the second elliptical reflection surface 6, the fixing member 9 will be described.
Is inclined as the vehicle body 10 is inclined, while the movable portion 7 is inclined.
Since the upright position is maintained by the operation of the drive unit 8, the opening 7c faces the upper left portion 6l1 and the lower right portion 6l2 of the second elliptic reflecting surface 6.
【００２７】本発明では、前記第二楕円系反射面６に対
して、車体１０が左に傾いたときに前記開口部７ｃを通
った光が到達する第二楕円系反射面６の左対応部６ｌ
１，６ｌ２からの反射光が、所定領域Ｈ６Ｌ即ち左側前
方を集中的に照射する。これによりこの左対応部６ｌか
らの補助配光Ｈ６Ｌは図８（Ｂ）（３）に示すように主
配光Ｈｍの垂直中心線Ｖに対して左側に位置する。即
ち、これからの車体１０の進行方向を明るく照射する。In the present invention, the left corresponding portion of the second elliptical reflection surface 6 to which the light passing through the opening 7c reaches when the vehicle body 10 leans to the left with respect to the second elliptical reflection surface 6. 6l
Reflected light from 1, 6l2 intensively illuminates a predetermined region H6L, that is, the left front side. As a result, the auxiliary light distribution H6L from the left corresponding portion 6l is located on the left side with respect to the vertical center line V of the main light distribution Hm, as shown in FIGS. That is, the traveling direction of the vehicle body 10 from now on is illuminated brightly.
【００２８】図８（Ｃ）は車体１０が右旋回を行うとき
の状態を示すものである。上記で説明したのと同様な作
用により車体１０が右に傾いたときには、図８（ｃ）
（２）に示すように、前記開口部７ｃを通った光は第二
楕円系反射面６の右対応部６ｒ１、６ｒ２に到達する。
６ｒ１は、第二楕円系反射面６の左側下方部分であり、
６ｒ２は、第二楕円系反射面６の右側上方部分である。
この第二楕円系反射面６の右対応部６ｒ１，６ｒ２から
の反射光が、所定領域Ｈ６Ｒ即ち右側前方を集中的に照
射する。図８（Ｃ）（３）（４）に示すように補助配光
Ｈ６Ｒは主配光Ｈｍ中の垂直中心線Ｖに対して右側の所
定領域を明るく照射する。FIG. 8C shows a state in which the vehicle body 10 is turning right. When the vehicle body 10 leans to the right due to the same action as described above, FIG.
As shown in (2), the light passing through the opening 7c reaches the right corresponding portions 6r1 and 6r2 of the second elliptic reflection surface 6.
6r1 is a lower left portion of the second elliptical reflection surface 6,
6r2 is an upper right portion of the second elliptical reflection surface 6.
The reflected light from the right corresponding portions 6r1 and 6r2 of the second elliptical reflection surface 6 intensively illuminates the predetermined area H6R, that is, the right front side. As shown in FIGS. 8 (C), (3) and (4), the auxiliary light distribution H6R brightly illuminates a predetermined area on the right side of the vertical center line V in the main light distribution Hm.
【００２９】即ち、本実施形態の車両用前照灯２０にお
いても、旋回時に車体１０が傾く二輪車などの車両にあ
っても、車体１０の傾きにつれて配光のカットオフライ
ンが傾くことなく、常に路面と平行な状態を保つので視
認性が向上する。これにくわえ、可動反射面７の開口部
７ｃと第二楕円系反射面６との相互の位置関係を変化さ
せることで旋回方向、言い換えれば、進路方向が明るく
照射され、一層に視認性が向上する。That is, even in the vehicle headlight 20 of this embodiment, even in a vehicle such as a two-wheeled vehicle in which the vehicle body 10 leans when turning, the cutoff line of the light distribution does not tilt as the vehicle body 10 leans, and the road surface is always Visibility is improved because it stays parallel to. In addition to this, by changing the mutual positional relationship between the opening 7c of the movable reflecting surface 7 and the second elliptic reflecting surface 6, the turning direction, in other words, the course direction is illuminated brightly, and the visibility is further improved. To do.
【００３０】なお、第二楕円系反射面６を設ける領域に
ついては、開口部７ｃの可動範囲をカバーするものであ
れば良く、車体１０の傾斜角度が大きい時、即ち可動部
７の固定ヶ所２に対する相対的移動距離が大きい場合で
も、開口部７ｃを通った光が確実に第二楕円系反射面６
により捕捉されるようにするため、第二楕円系反射面６
が開口部７ｃの可動範囲よりも適宜広い領域に設けられ
ていることが望ましい。また、第二楕円系反射面６の上
辺６ａと下辺６ｂの位置は、第二楕円系反射面６の反射
光に要求される配光特性、例えば、照射領域と照度分布
に応じて調整され、第二楕円系反射面６の光軸Z方向の
長さと幅、搭載される車両の傾斜の態様、例えば角度等
も考慮の上決定される。The area in which the second elliptic reflection surface 6 is provided may cover the movable range of the opening 7c, and when the inclination angle of the vehicle body 10 is large, that is, the fixed portion 2 of the movable portion 7. Even when the relative movement distance to the second is large, the light passing through the opening portion 7c can be surely emitted.
The second elliptical reflecting surface 6 in order to be captured by
Is preferably provided in a region appropriately larger than the movable range of the opening 7c. The positions of the upper side 6a and the lower side 6b of the second elliptical reflection surface 6 are adjusted according to the light distribution characteristics required for the reflected light of the second elliptical reflection surface 6, for example, the irradiation area and the illuminance distribution. The length and width of the second ellipsoidal reflecting surface 6 in the optical axis Z direction, the mode of inclination of the mounted vehicle, such as the angle, are also taken into consideration.
【００３１】図７は第二実施形態としての車両用前照灯
２０の可動部７の変形例を示すものである。可動部７に
関して、開口部７ｃを大きく取る場合は、図６に示すよ
うに第二楕円系反射面の光源側周縁部６ｄに押し当てら
れる部分であるリム７ｄを、衝撃等による変形防止のた
め設定しておいてもよい。また、変形等の恐れがない場
合は、図８に示すように、リム７ｄは無くても良い。ま
た、シャッタ部７ｂと可動反射面部７aは一体成形され
てもよいが、別体として成形し、ネジ等で固定してもよ
い。FIG. 7 shows a modification of the movable portion 7 of the vehicle headlamp 20 according to the second embodiment. When the opening 7c of the movable portion 7 is large, as shown in FIG. 6, the rim 7d, which is a portion pressed against the light source side peripheral portion 6d of the second elliptical reflection surface, is prevented from being deformed by an impact or the like. You may set it. If there is no fear of deformation or the like, the rim 7d may be omitted as shown in FIG. Further, the shutter portion 7b and the movable reflection surface portion 7a may be integrally molded, but may be separately molded and fixed with screws or the like.
【００３２】尚、実際の実施に当たっては、例えば二輪
車などにおいては、低速走行時には旋回は専らにハンド
ルの操作で行われ、車体１０にはそれ程の傾きを生じる
ことがないのに対して、高速走行時にはハンドルの操作
はほとんど行われず、専らに車体を傾けることで行われ
るなど、車体１０に生じる傾きには走行速度に依存する
部分もかなり認められる。したがって、本発明において
は前記駆動部８に入力する信号は上記した傾斜センサの
みでなく、ハンドルの操作角センサ、走行速度センサ車
体などからの出力も必要に応じて採用することが好まし
い。In actual practice, for example, in a two-wheeled vehicle or the like, turning is performed exclusively by operating the steering wheel during low-speed traveling, and the vehicle body 10 does not tilt so much, whereas high-speed traveling is performed. Occasionally, the steering wheel is rarely operated, and the vehicle body 10 is tilted exclusively, so that the leaning of the vehicle body 10 considerably depends on the traveling speed. Therefore, in the present invention, it is preferable that not only the above-described tilt sensor but also the output from the steering wheel operation angle sensor, the traveling speed sensor vehicle body, etc. be adopted as the signal input to the drive unit 8 as necessary.
【００３３】図９（Ａ）は、モータ８aの制御回路９を
示すブロック図である。図中実線経路は、モータ８ａの
駆動条件として車体傾きセンサーの出力結果だけである
場合を示し、一点鎖線経路は、車体傾きセンサーの出力
結果の他に、走行速度センサー及びハンドル操作角セン
サーから出力結果を参照する場合を示す。まず、モータ
８ａの駆動条件が車体傾きセンサーの出力結果だけであ
る場合（図中実線経路）の制御回路９の構成を説明す
る。制御回路９は、モータ駆動回路９ａと比較回路９ｂ
から成る。モータ駆動回路９aの出力側はモータ８ａに
接続されている。モータ駆動回路９ａは，比較回路９ｂ
からの入力に応じて駆動される。比較回路９ｂは、入力
側は、可動部７に取り付けられたポテンショメータ１
１、車体傾き検出器１２の出力側に接続されている。比
較回路９ｂの出力側は、モータ駆動回路９ａに接続され
ている。ポテンショメータ１１の歯車部１１ａは可動部
７のギア部と噛み合っている。なお、ポテンショメータ
１１を取り付ける位置は、基本的には可動部７のどの部
分でも良いが、生産効率等を考えると、可動部７に設け
られるギア部の端に設けられることが望ましい。比較回
路の信号処理について説明する。ポテンショメータ１１
の端子電圧即ち車両用灯具１の傾きを示す信号と、基準
電圧即ち車体傾き検出センサー１２からの電圧が、比較
回路９ｂ内で比較され、そこに差があれば、その差に応
じて駆動信号が出力される。この駆動信号は、モータ駆
動回路に直接出力され、それによりモータ８ａが駆動さ
れ、歯車８ｂを介して可動部７が回動される。そして、
車体傾き検出センサー１２からの電圧とポテンショメー
タ１１の端子電圧が同じ値である時は、駆動信号はモー
タ駆動回路９ａに出力されない。FIG. 9A is a block diagram showing the control circuit 9 of the motor 8a. The solid line path in the figure shows the case where only the output result of the vehicle body tilt sensor is the driving condition of the motor 8a, and the one-dot chain line path is output from the traveling speed sensor and the steering wheel operation angle sensor in addition to the output result of the vehicle body tilt sensor The case of referring to the result is shown. First, the configuration of the control circuit 9 in the case where the driving condition of the motor 8a is only the output result of the vehicle body inclination sensor (solid line path in the figure) will be described. The control circuit 9 includes a motor drive circuit 9a and a comparison circuit 9b.
Consists of. The output side of the motor drive circuit 9a is connected to the motor 8a. The motor drive circuit 9a is a comparison circuit 9b.
It is driven according to the input from. The input side of the comparison circuit 9b is the potentiometer 1 attached to the movable portion 7.
1. Connected to the output side of the vehicle body tilt detector 12. The output side of the comparison circuit 9b is connected to the motor drive circuit 9a. The gear portion 11 a of the potentiometer 11 meshes with the gear portion of the movable portion 7. It should be noted that the position where the potentiometer 11 is attached may be basically any part of the movable part 7, but in view of production efficiency and the like, it is desirable that it is provided at the end of the gear part provided in the movable part 7. The signal processing of the comparison circuit will be described. Potentiometer 11
Of the terminal voltage, that is, the signal indicating the inclination of the vehicular lamp 1, and the reference voltage, that is, the voltage from the vehicle body inclination detection sensor 12 are compared in the comparison circuit 9b. If there is a difference, a drive signal is generated according to the difference. Is output. This drive signal is directly output to the motor drive circuit, which drives the motor 8a and rotates the movable portion 7 via the gear 8b. And
When the voltage from the vehicle body tilt detection sensor 12 and the terminal voltage of the potentiometer 11 have the same value, the drive signal is not output to the motor drive circuit 9a.
【００３４】次に、モータ８ａの駆動条件が車体傾きセ
ンサーの出力結果の他に、必要に応じて走行速度センサ
ー１３、ハンドルの操作角センサー１４が、制御回路９
に設けられる場合（図中一点鎖線経路）の制御回路９の
構成を説明する。制御回路９は、モータ駆動回路９ａ、
比較回路９ｂ、信号処理回路９ｃを含み、信号処理回路
９ｃが比較回路９ｂとモータ駆動回路９ａの間に設けら
れる。比較回路９ｂの入力側は、車体傾きセンサー１２
の出力側及びポテンショメータ１１の出力側に接続され
ており、比較回路９ｂの出力側は、信号処理回路９ｃの
入力側に接続されている。比較回路内の作動は、実線経
路の場合と同じである。モータ駆動回路９ａは、入力側
を信号処理回路９ｃの出力側に有し、出力側をモータ８
ａに有しており、信号処理回路９ｃからの入力に応じて
モータ８ａの駆動信号を出力する。制御回路９の作動に
ついては、信号処理回路９ｃにおいて、比較回路９ｂか
らから出力されたモータ駆動信号を、走行速度センサー
及び或いはハンドル操作角センサーからの出力を参照す
ることにより適宜補正するよう処理される。例えば、走
行速度センサー１３からの出力が、例えば走行速度５ｋ
ｍ／ｈ未満である時（運転者がバイクを押して歩いてい
る時）は、比較回路９ｂで差が検出されても、モータ駆
動回路９ａは駆動されないよう設定されてよい。或い
は、低速走行時はハンドル操作角センサー１４からの信
号を優先処理し、中・高走行時は比較回路９ｂからの出
力を優先するよう設定してもよい。Next, in addition to the output result of the vehicle body tilt sensor, the driving condition of the motor 8a, the traveling speed sensor 13 and the steering wheel operation angle sensor 14 are connected to the control circuit 9 if necessary.
The configuration of the control circuit 9 in the case of being provided in (indicated by the one-dot chain line in the figure) will be described. The control circuit 9 includes a motor drive circuit 9a,
The comparison circuit 9b and the signal processing circuit 9c are included, and the signal processing circuit 9c is provided between the comparison circuit 9b and the motor drive circuit 9a. The input side of the comparison circuit 9b has a body tilt sensor 12
Is connected to the output side of the potentiometer 11 and the output side of the comparison circuit 9b is connected to the input side of the signal processing circuit 9c. The operation in the comparison circuit is the same as in the case of the solid line path. The motor drive circuit 9a has an input side on the output side of the signal processing circuit 9c and an output side on the motor 8 side.
a, and outputs a drive signal for the motor 8a in response to an input from the signal processing circuit 9c. The operation of the control circuit 9 is processed in the signal processing circuit 9c so as to appropriately correct the motor drive signal output from the comparison circuit 9b by referring to the output from the traveling speed sensor and / or the steering wheel operation angle sensor. It For example, the output from the traveling speed sensor 13 is, for example, a traveling speed of 5k.
When it is less than m / h (when the driver is walking while pushing the motorcycle), the motor drive circuit 9a may be set not to be driven even if the difference is detected by the comparison circuit 9b. Alternatively, the signal from the steering wheel operation angle sensor 14 may be preferentially processed during low speed traveling, and the output from the comparison circuit 9b may be prioritized during medium / high speed traveling.
【００３５】また、図示は省略するが、走行速度センサ
１３を車体傾きセンサー１２及びポテンショメータ１１
の入力側に取り付け、走行速度５ｋｍ／ｈ未満の場合
は、車体傾きセンサー１２及びポテンショメータ１１が
駆動されないようにしてもよい。なお、図９では、セン
サーは、車体傾きセンサー１２だけの使用例、車体傾き
センサー１２、走行速度センサー１３、ハンドル操作角
センサー１４の三種の使用例を示したが、センサーの種
類と数はこれに限られるものでなく、他の種類のセンサ
ーを使ってもよいし、どれか一種類を単独で使用しても
よいし、２種類以上の組み合わせであってもよい。Although not shown, the traveling speed sensor 13 is replaced by the vehicle body inclination sensor 12 and the potentiometer 11.
The vehicle body inclination sensor 12 and the potentiometer 11 may be prevented from being driven when the vehicle speed is less than 5 km / h. Note that FIG. 9 shows three types of usage examples of the sensor including only the vehicle body tilt sensor 12, the vehicle body tilt sensor 12, the traveling speed sensor 13, and the steering wheel operation angle sensor 14, but the types and number of sensors are as follows. However, other types of sensors may be used, any one type may be used alone, or a combination of two or more types may be used.
【００３６】本発明の効果について説明する。第一に、
車両用前照灯１、２０は、その作動中いつでも、配光の
水平ラインを地表と平行に保つことができる。この利点
は、車両用前照灯１、２０が、車体の傾斜が大きい二輪
車、三輪車に搭載された場合効果的である。第二に、車
両用前照灯１、２０の構成は、可動部７が固定部材９と
第二楕円反射面の間で回動自在に保持されるようになっ
ており、この構成は可動部７の駆動機構を簡素なものと
することを可能にしている。この利点は、量産効率とコ
ストの面で有利である。The effects of the present invention will be described. Primarily,
The vehicle headlamps 1, 20 can keep the horizontal line of light distribution parallel to the ground surface at any time during their operation. This advantage is effective when the vehicle headlamps 1 and 20 are mounted on a two-wheeled vehicle or a three-wheeled vehicle with a large body inclination. Secondly, the configuration of the vehicle headlamps 1 and 20 is such that the movable portion 7 is rotatably held between the fixed member 9 and the second elliptical reflecting surface. It is possible to simplify the drive mechanism of 7. This advantage is advantageous in terms of mass production efficiency and cost.
【図１】 本発明に係る車両用前照灯の第一実施形態を
示す断面図である。FIG. 1 is a sectional view showing a first embodiment of a vehicle headlamp according to the present invention.
【図２】 本発明の第一実施形態である車両用前照灯の
斜視分解図である。FIG. 2 is a perspective exploded view of the vehicle headlamp that is the first embodiment of the present invention.
【図３】 本発明に係る車両用前照灯の開口部の形状の
変形例を示す斜視図である。FIG. 3 is a perspective view showing a modified example of the shape of the opening of the vehicle headlamp according to the present invention.
【図４】 本発明に係る第一実施形態の車両用前照灯の
（１）車体の傾きに応じた第一楕円系反射面と第二楕円
系反射面の位置関係、（２）第二楕円系反射面からの反
射光から成る配光及び車両用前照灯全体からの配光特性
を示す説明図である。FIG. 4 is (1) the positional relationship between the first elliptical reflection surface and the second elliptical reflection surface according to the inclination of the vehicle body of the vehicle headlamp according to the first exemplary embodiment of the present invention; It is explanatory drawing which shows the light distribution which consists of the reflected light from an elliptical reflection surface, and the light distribution characteristic from the whole vehicle headlamp.
【図５】 本発明に係る第二実施形態を示す車両用前照
灯のランプ光軸Ｚに沿った（ａ）水平断面図（ｂ）垂直
断面図である。FIG. 5 is a horizontal sectional view (a) along a lamp optical axis Z of a vehicle headlamp showing a second embodiment according to the present invention (b) a vertical sectional view.
【図６】 本発明の第二実施形態による車両用前照灯の
斜視分解図である。FIG. 6 is a perspective exploded view of a vehicle headlamp according to a second embodiment of the present invention.
【図７】 本発明に係る第二実施形態による車両用前照
灯の可動部の変形例を示す斜視図である。FIG. 7 is a perspective view showing a modified example of the movable portion of the vehicle headlamp according to the second embodiment of the present invention.
【図８】 本発明に係る第二実施形態の車両用前照灯の
（１）車体の傾きに応じた第一楕円系反射面と第二楕円
系反射面の位置関係、（２）第二楕円系反射面の反射領
域（３）第二楕円系反射面からの反射光から成る配光
（４）車両用前照灯全体からの配光特性を示す説明図で
ある。FIG. 8 is (1) a positional relationship between the first elliptical reflection surface and the second elliptical reflection surface according to the inclination of the vehicle body of the vehicle headlamp according to the second embodiment of the present invention; It is explanatory drawing which shows the light distribution characteristic from the reflection area | region of an elliptical system reflective surface (3) and the light reflected from the 2nd elliptical system reflective surface (4) vehicle headlamp whole.
【図９】 本発明の第一実施形態による（A）モータを
駆動するための制御回路を示すブロック図（B）ポテン
ショメータを可動部に取り付けた状態を示す斜視図であ
る。FIG. 9 is a block diagram showing a control circuit for driving a motor according to the first embodiment of the present invention (B) is a perspective view showing a state in which a potentiometer is attached to a movable portion.
【図１０】 従来例を示す断面図である。FIG. 10 is a cross-sectional view showing a conventional example.
【図１１】 従来例の配光特性を示す説明図である。FIG. 11 is an explanatory diagram showing a light distribution characteristic of a conventional example.
【図１２】 従来例の車両用灯具において車体が傾いた
ときの配光特性を示す説明図である。FIG. 12 is an explanatory diagram showing a light distribution characteristic when the vehicle body is tilted in the conventional vehicle lamp.
１……車両用前照灯 ２……本体部 ３……光源 ４……楕円反射面 ５……投影レンズ ６……補助反射面 ６ｃ……中央部 ６ｌ……左対応部 ６ｒ……右対応部 ７……可動反射面 ７ａ……反射面部 ７ｂ……シャッタ部 ７ｃ……開口部 ８……駆動部 １０……車体 1 ... Vehicle headlight 2 ... Main body 3 ... Light source 4 ... Elliptical reflective surface 5 ... Projection lens 6 ... Auxiliary reflective surface 6c ... central part 6l …… Left part 6r: right side 7: Movable reflective surface 7a ... Reflecting surface part 7b ... Shutter 7c ... Opening 8: Drive unit 10 ... Body
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２１Ｖ 14/04 Ｆ２１Ｍ 3/20 Ｚ // Ｆ２１Ｗ 101:027 3/02 Ｄ 101:10 Ｂ６０Ｑ 1/12 Ｚ Ｆ２１Ｙ 101:00 Ｆターム(参考） 3K039 AA01 BA01 CC01 GA02 JA03 3K042 AA09 AC01 BB05 BB14 BC01 BC09 BD04 BE09 CB13 CB25─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F21V 14/04 F21M 3/20 Z // F21W 101: 027 3/02 D 101: 10 B60Q 1/12 Z F21Y 101: 00 F term (reference) 3K039 AA01 BA01 CC01 GA02 JA03 3K042 AA09 AC01 BB05 BB14 BC01 BC09 BD04 BE09 CB13 CB25
Claims (40)
って、該第一楕円系反射面は第一焦点を有し、該第一焦
点は光源の位置にあり、該第一楕円系反射面からの反射
光は、投影レンズに入射するよう設定されており、該可
動部に少なくとも一つの開口部を有する第一楕円系反射
面と、 該第一楕円系反射面の可動部に設けられた該開口部の移
動範囲をカバーする領域に対応して設けられている第二
楕円系反射面であって、該第二楕円系反射面は第一焦点
を有し、該第一焦点は光源の位置にあり、該第二楕円系
反射面からの反射光は、投影レンズに入射するよう設定
されている第二楕円系反射面と、 前記第一楕円系反射面の可動部に接続する駆動部と、 該第一楕円系反射面の可動部を回動可能に所定位置に保
持する固定部材とを備え投影レンズからの照射光の配光
形状は、その長辺が水平方向に沿う略矩形となるように
され、 前記第一楕円系反射面可動部は駆動部の駆動により、該
配光形状の長辺が灯具の傾斜によらず、地表に対して水
平を保つように回動が行われ、 前記可動部の開口部を通った光は、第二楕円系反射面の
少なくとも一部により反射され、所望の方向へ集束して
照射されることを特徴とする車両用前照灯。1. A light source, a projection lens, and a first elliptical reflection surface having a movable portion at least in part, wherein the first ellipsoid reflection surface has a first focal point, and the first focal point is Light reflected from the first elliptical reflection surface at the position of the light source is set to enter the projection lens, and the first elliptical reflection surface having at least one opening in the movable portion, A second elliptical reflection surface is provided corresponding to a region covering the movement range of the opening provided in the movable portion of the first elliptical reflection surface, and the second elliptical reflection surface is A second ellipsoidal reflection surface that is set so that the first focal point is located at the position of the light source, and the reflected light from the second ellipsoidal reflection surface is incident on the projection lens; A drive unit connected to the movable portion of the one elliptical reflection surface, and a movable portion of the first elliptical reflection surface rotatably at a predetermined position. And a fixed member for holding the light distribution shape of the irradiation light from the projection lens such that its long side is substantially rectangular along the horizontal direction, and the first elliptical reflection surface movable unit drives the driving unit. By this, the long side of the light distribution shape is rotated so as to keep horizontal with respect to the ground surface irrespective of the inclination of the lamp, and the light passing through the opening of the movable portion is reflected by the second elliptical reflection surface. A vehicle headlight, which is reflected by at least a part of the light and is focused and emitted in a desired direction.
ャッタ部を有し、前記第一楕円系反射面の可動部は駆動
部の駆動によりシャッタ部上端が地表に対して水平を保
つように回動が行われることを特徴とする請求項１に記
載の車両用前照灯。2. A shutter section interlocking with a movable section of the first elliptical reflection surface, wherein the movable section of the first elliptical reflection surface is driven by a drive section so that the upper end of the shutter section is horizontal to the ground surface. The vehicle headlamp according to claim 1, wherein the vehicle headlamp is rotated so as to be kept.
部は一体に形成されていることを特徴とする請求項２に
記載の車両用前照灯。3. The vehicle headlamp according to claim 2, wherein the movable portion of the first elliptical reflection surface and the shutter portion are integrally formed.
二楕円系反射面によって反射された光は、進行方向の前
方を照射することを特徴とする請求項１又は２に記載の
車両用前照灯。4. The light reflected by the second elliptical reflection surface through the opening 7c when the vehicle body is inclined, illuminates the front in the traveling direction. Vehicle headlights.
レンズの焦点付近に位置することを特徴とする請求項
１、２又は４の何れかに記載の車両用前照灯。5. The vehicle headlamp according to claim 1, wherein the second focal point of the second elliptical reflection surface is located near the focal point of the projection lens.
記第二楕円系反射面の開口部をカバーする部分は、前記
第一楕円系反射面の固定部と段差部によってつながって
いることを特徴とする請求項１、２、４又は５の何れか
に記載の車両用前照灯。6. The first elliptical reflection surface has a fixed portion, and a portion covering the opening of the second elliptical reflection surface is connected to the fixed portion of the first elliptical reflection surface by a step portion. The vehicle headlamp according to claim 1, 2, 4, or 5.
より後方に位置する固定部を有し、該固定部と可動部は
連続した一つの面として機能することを特徴とする請求
項１、２、４、５又は６の何れかに記載の車両用前照
灯。7. The first elliptic reflection surface further has a fixed portion located behind the movable portion, and the fixed portion and the movable portion function as one continuous surface. Item 7. The vehicle headlamp according to any one of Items 1, 2, 4, 5, and 6.
面の内側に位置することを特徴とする請求項１、２、
４、５、６又は７の何れかに記載の車両用前照灯。8. The first elliptic reflection surface is located inside the second elliptical reflection surface.
The vehicle headlight according to any one of 4, 5, 6 or 7.
部を介して、車体傾きセンサの出力に応じて行われるこ
とを特徴とする請求項１、２又は３の何れかに記載の車
両用前照灯。9. The rotation of the first elliptical reflection surface is performed according to the output of a vehicle body inclination sensor via the drive unit. The vehicle headlamp described.
介して走行速度センサからの出力に応じて行われること
を特徴とする請求項１、２又は９の何れかに記載の車両
用前照灯。10. The vehicle according to claim 1, wherein the movable reflecting surface is rotated in response to an output from a traveling speed sensor via the drive unit. Headlight.
介してハンドルの操作角センサからの出力に応じて行わ
れることを特徴とする請求項１、２、９又は１０の何れ
かに記載の車両用前照灯。11. The rotation of the movable reflecting surface is performed in response to an output from an operation angle sensor of a handle via the drive unit. The vehicle headlamp described in.
らなることを特徴とする請求項１、２、３、９、１０又
は１１の何れかに記載の車両用前照灯。12. The vehicle headlamp according to claim 1, wherein the drive unit includes a motor and a meshing gear.
れた前記開口部は、上方に設けられていることを特徴と
する請求項１ないし１２の何れかに記載の車両用前照
灯。13. The vehicle headlight according to claim 1, wherein the opening provided in the movable portion of the first elliptical reflection surface is provided above. light.
れた前記開口部は、両側方に設けられていることを特徴
とする請求項１ないし１２の何れかに記載の車両用前照
灯。14. The vehicle front according to claim 1, wherein the opening provided in the movable portion of the first elliptical reflection surface is provided on both sides. Light.
て、該第一焦点は光源の位置にあり、該固定第一楕円系
反射面からの反射光は、投影レンズに入射するよう設定
されており、 第一焦点を有し、少なくとも一つの開口部（７ｃ）を有
する可動第二楕円系反射面（７ａ）であって、該第一焦
点は光源の位置にあり、該可動第二楕円系反射面からの
反射光は、投影レンズに入射するよう設定されており、 第一焦点を有する固定第三楕円系反射面（６）であっ
て、該第一焦点は光源の位置にあり、該固定第三楕円系
反射面からの反射光は、投影レンズに入射するよう設定
されており、該固定第三楕円系反射面（６）は第一楕円
系反射面（４）に接続しており、該固定第三楕円系反射
面（６）は少なくとも前記可動第二楕円系反射面（７
ａ）の開口部の移動範囲をカバーする領域に対応して設
けられている固定第三楕円系反射面（６）と、 前記可動第二楕円系反射面（７ａ）に接続する駆動部
（８）と、 第二楕円系反射面（７ａ）を回動可能に所定位置に保持
する固定部材（９）とを備え投影レンズからの照射光の
配光形状は、その長辺が水平方向に沿う略矩形となるよ
うにされ、 前記第二楕円系反射面（７ａ）は駆動部（８）の駆動に
より、該配光形状の長辺が灯具の傾斜によらず、地表に
対して水平を保つように回動が行われ前記第二楕円系反
射面の開口部（７ｃ）を通った光は、第三楕円系反射面
（６）により反射され、所望の方向へ集束して照射され
ることを特徴とする車両用前照灯。15. A light source, a projection lens, and a fixed first elliptical reflection surface (4) having a first focus, the first focus being at the position of the light source, and the fixed first elliptical reflection surface. The reflected light from is set to enter the projection lens, has a first focal point, and is a movable second elliptical reflection surface (7a) having at least one opening (7c), One focal point is located at the position of the light source, and the reflected light from the movable second elliptical reflecting surface is set to enter the projection lens, and the fixed third elliptic reflecting surface (6) having the first focal point is used. The first focal point is at the position of the light source, and the reflected light from the fixed third elliptical reflection surface is set to enter the projection lens, and the fixed third elliptical reflection surface (6) Is connected to the first elliptical reflecting surface (4), and the fixed third elliptic reflecting surface (6) is at least The movable second elliptical reflecting surface (7
a) A drive unit (8) connected to the fixed third elliptical reflection surface (6) provided corresponding to the area covering the movement range of the opening of a) and the movable second elliptical reflection surface (7a). ) And a fixing member (9) for rotatably holding the second elliptical reflection surface (7a) at a predetermined position, the long side of the light distribution shape of the irradiation light from the projection lens is along the horizontal direction. The second elliptical reflection surface (7a) is driven by the driving unit (8) so that the long side of the light distribution shape is kept horizontal with respect to the ground surface regardless of the inclination of the lamp. The light that has been rotated as described above and has passed through the opening (7c) of the second elliptical reflection surface is reflected by the third elliptical reflection surface (6), focused in a desired direction, and irradiated. Vehicle headlights characterized by.
部を有し、前記第二楕円系反射面は駆動部の駆動により
シャッタ部上端が地表に対して水平を保つように回動が
行われることを特徴とする請求項１５に記載の車両用前
照灯。16. A shutter section interlocking with the second elliptical reflection surface is provided, and the second elliptical reflection surface is rotated by driving of a driving section so that the upper end of the shutter section is kept horizontal with respect to the ground surface. The vehicle headlamp according to claim 15, wherein the headlamp for a vehicle is performed.
体に形成されていることを特徴とする請求項１６に記載
の車両用前照灯。17. The vehicle headlamp according to claim 16, wherein the second elliptical reflection surface and the shutter portion are integrally formed.
第三楕円系反射面によって反射された光は、進行方向の
前方を照射することを特徴とする請求項１５又は１６に
記載の車両用灯具。18. The light reflected by the third elliptical reflection surface through the opening 7c when the vehicle body is tilted, and illuminates the front in the traveling direction. Vehicle lighting.
影レンズの焦点付近に位置することを特徴とする請求項
１５、１６又は１８の何れかに記載の車両用前照灯。19. The vehicle headlamp according to claim 15, wherein the second focal point of the third elliptical reflection surface is located near the focal point of the projection lens.
系反射面と段差部によってつながっていることを特徴と
する請求項１５、１６、１８又は１９の何れかに記載の
車両用前照灯。20. The vehicle according to claim 15, wherein the first elliptical reflection surface is connected to the third elliptical reflection surface by a step portion. Headlight.
面は連続した一つの面として機能することを特徴とする
請求項１５、１６、１８、１９又は２０の何れかに記載
の車両用前照灯。21. The first elliptical reflection surface and the second elliptical reflection surface function as one continuous surface, according to any one of claims 15, 16, 18, 19 and 20. Vehicle headlights.
射面の内側に位置することを特徴とする請求項１５、１
６、１８、１９、２０又は２１の何れかに記載の車両用
前照灯。22. The second elliptical reflection surface is located inside the third elliptical reflection surface.
The vehicle headlight according to any one of 6, 18, 19, 20, or 21.
動部を介して、車体傾きセンサの出力に応じて行われる
ことを特徴とする請求項１５、１６又は１７の何れかに
記載の車両用前照灯。23. The rotation of the second ellipsoidal reflecting surface is performed according to the output of a vehicle body tilt sensor via the drive unit. The vehicle headlamp described.
記駆動部を介して走行速度センサからの出力に応じて行
われることを特徴とする請求項１５、１６又は２３の何
れかに記載の車両用前照灯。24. The rotation of the movable second elliptical reflecting surface is performed in response to an output from a traveling speed sensor via the drive unit. The vehicle headlamp described in.
記駆動部を介してハンドルの操作角センサからの出力に
応じて行われることを特徴とする請求項１５、１６、２
３、又は２４の何れかに記載の車両用前照灯。25. The rotation of the movable second elliptical reflecting surface is performed in response to an output from an operation angle sensor of a handle via the drive section.
The vehicle headlight according to any one of 3 and 24.
らなることを特徴とする請求項１５、１６、１７、２
３、２４又は２５の何れかに記載の車両用前照灯。26. The driving unit comprises a motor and a meshing gear, as set forth in claims 15, 16, 17, and 2.
The vehicle headlight according to any one of 3, 24, and 25.
口部（７ｃ）は、上方に設けられていることを特徴とす
る請求項１５ないし２６の何れかに記載の車両用前照
灯。27. The vehicle headlamp according to any one of claims 15 to 26, wherein the opening (7c) of the movable second elliptical reflection surface (7a) is provided above. light.
口部（７ｃ）は、両側方に設けられていることを特徴と
する請求項１５ないし２６の何れかに記載の車両用前照
灯。28. The vehicle front according to any one of claims 15 to 26, wherein the opening (7c) of the movable second elliptical reflection surface (7a) is provided on both sides. Light.
する可動第一楕円系反射面（７a）であって、該第一焦
点は光源の位置にあり、該可動第一楕円系反射面からの
反射光は、投影レンズに入射するよう設定されており、 第一焦点を有する固定第二楕円系反射面（６）であっ
て、該第一焦点は光源の位置にあり、該固定第二楕円系
反射面からの反射光は、投影レンズに入射するよう設定
されており、該固定第二楕円系反射面（６）は少なくと
も前記可動第一楕円系反射面の開口部の移動範囲をカバ
ーする領域に対応して設けられており、 前記可動第一楕円系反射面（７ａ）に接続する駆動部
（８）と、 可動第一楕円系反射面を回動可能に所定位置に保持する
固定部材（９）とを備え投影レンズからの照射光の配光
形状は、その長辺が水平方向に沿う略矩形となるように
され、 前記可動第一楕円反射面（７ａ）は駆動部（８）の駆動
により、該配光形状の長辺が灯具の傾斜によらず、地表
に対して水平を保つように回動が行われ、 前記可動第一楕円反射面の開口部（７ｃ）を通った光
は、固定第二楕円反射面（６）により反射され、所望の
方向へ集束して照射されることを特徴とする車両用前照
灯。29. A light source, a projection lens, and a movable first elliptical reflection surface (7a) having a first focal point and having at least one opening (7c), the first focal point of the light source. The fixed second elliptic reflection surface (6) having a first focus, the reflected light from the movable first elliptical reflection surface being set to enter the projection lens. One focal point is located at the position of the light source, the reflected light from the fixed second elliptical reflective surface is set to enter the projection lens, and the fixed second elliptic reflective surface (6) is at least the movable first elliptic reflective surface. A driving part (8) provided corresponding to a region covering the movement range of the opening of the one elliptical reflecting surface, and connected to the movable first elliptic reflecting surface (7a); A fixing member (9) for rotatably holding the reflecting surface at a predetermined position; The light distribution shape of the irradiation light is such that its long side is substantially rectangular along the horizontal direction, and the movable first elliptical reflecting surface (7a) is driven by a driving unit (8) to have a long shape of the light distribution shape. The light is rotated so that the side is kept horizontal with respect to the ground surface irrespective of the inclination of the lamp, and the light passing through the opening (7c) of the movable first elliptical reflecting surface (the second fixed elliptical reflecting surface ( 6) A vehicle headlight that is reflected by 6) and is focused and emitted in a desired direction.
ッタ部を有し、前記可動第一楕円系反射面は駆動部の駆
動によりシャッタ部上端が地表に対して水平を保つよう
に回動が行われることを特徴とする請求項２９に記載の
車両用前照灯。30. A shutter section interlocking with the movable first elliptical reflection surface, wherein the movable first elliptical reflection surface is rotated so that an upper end of the shutter section is kept horizontal with respect to the ground surface by driving of a driving section. 30. The vehicle headlamp according to claim 29, wherein the vehicle headlight is moved.
は一体に形成されていることを特徴とする請求項３０に
記載の車両用前照灯。31. The vehicle headlamp according to claim 30, wherein the movable first elliptical reflection surface and the shutter portion are integrally formed.
固定第二楕円系反射面によって反射された光は、進行方
向の前方を照射することを特徴とする請求項２９又は３
０に記載の車両用前照灯。32. When the vehicle body is tilted, the light reflected by the fixed second elliptical reflection surface through the opening 7c illuminates the front in the traveling direction.
The vehicle headlamp according to 0.
は、投影レンズの焦点付近に位置することを特徴とする
請求項２９、３０又は３２の何れかに記載の車両用前照
灯。33. The vehicle headlamp according to claim 29, 30 or 32, wherein the second focal point of the fixed second elliptical reflecting surface is located near the focal point of the projection lens. .
楕円系反射面の内側に位置することを特徴とする請求項
２９、３０又は３２の何れかに記載の車両用前照灯。34. The vehicle headlight according to claim 29, 30 or 32, wherein the movable first elliptical reflection surface is located inside the fixed second elliptical reflection surface. .
記駆動部を介して、車体傾きセンサの出力に応じて行わ
れることを特徴とする請求項２９ないし３１の何れかに
記載の車両用前照灯。35. The rotation of the movable first elliptic reflecting surface is performed according to the output of a vehicle body tilt sensor via the drive unit. Vehicle headlights.
記駆動部を介して走行速度センサからの出力に応じて行
われることを特徴とする請求項２９、３０、３１又は３
５の何れかに記載の車両用前照灯。36. The rotation of the movable first elliptical reflection surface is performed according to an output from a traveling speed sensor via the drive unit.
The vehicle headlamp according to any one of 5 above.
記駆動部を介してハンドルの操作角センサからの出力に
応じて行われることを特徴とする請求項２９、３０、３
１、３５又は３６の何れかに記載の車両用前照灯。37. The rotation of the movable first ellipsoidal reflecting surface is performed according to an output from an operation angle sensor of a handle via the drive section.
The vehicle headlight according to any one of 1, 35, and 36.
らなることを特徴とする請求項２９、３０、３１、３
５、３６又は３７の何れかに記載の車両用前照灯。38. The driving unit comprises a motor and a meshing gear as set forth in claim 29, 30, 31, and 3.
The vehicle headlight according to any one of 5, 36, and 37.
の開口部（７ｃ）は、上方に設けられていることを特徴
とする請求項２９ないし３８の何れかに記載の車両用前
照灯。39. The movable first elliptical reflection surface (7a).
39. The vehicle headlamp according to claim 29, wherein the opening (7c) is provided above.
口部（７ｃ）は、両側方に設けられていることを特徴と
する請求項２９ないし３８の何れかに記載の車両用前照
灯。40. The vehicle front according to claim 29, wherein the opening (7c) of the movable first elliptical reflection surface (7a) is provided on both sides. Light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002243564A JP4078151B2 (en) | 2001-08-24 | 2002-08-23 | Vehicle headlamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001254681 | 2001-08-24 | ||
| JP2001-254681 | 2001-08-24 | ||
| JP2002243564A JP4078151B2 (en) | 2001-08-24 | 2002-08-23 | Vehicle headlamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003141912A true JP2003141912A (en) | 2003-05-16 |
| JP4078151B2 JP4078151B2 (en) | 2008-04-23 |
Family
ID=26620943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002243564A Expired - Fee Related JP4078151B2 (en) | 2001-08-24 | 2002-08-23 | Vehicle headlamp |
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| Country | Link |
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| JP (1) | JP4078151B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005119615A (en) * | 2003-10-20 | 2005-05-12 | Mitsubishi Cable Ind Ltd | Headlight adjustment device |
| JP2006168710A (en) * | 2004-10-14 | 2006-06-29 | Zizala Lichtsysteme Gmbh | Headlight for vehicle |
| JP2008068680A (en) * | 2006-09-12 | 2008-03-27 | Honda Motor Co Ltd | Lighting device for motorcycle |
| JP2010033930A (en) * | 2008-07-30 | 2010-02-12 | Ichikoh Ind Ltd | Vehicular lighting fixture |
| JP2010155486A (en) * | 2008-12-26 | 2010-07-15 | Yamaha Motor Co Ltd | Saddle riding type vehicle |
| JP2010161006A (en) * | 2009-01-09 | 2010-07-22 | Marumo Denki Kk | Lighting system |
| WO2014038177A1 (en) * | 2012-09-07 | 2014-03-13 | 三菱電機株式会社 | Vehicle headlight device |
| JP2017119470A (en) * | 2015-12-28 | 2017-07-06 | 川崎重工業株式会社 | vehicle |
| JP2017174735A (en) * | 2016-03-25 | 2017-09-28 | 株式会社小糸製作所 | Vehicular lighting fixture and vehicle including vehicular lighting fixture |
-
2002
- 2002-08-23 JP JP2002243564A patent/JP4078151B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005119615A (en) * | 2003-10-20 | 2005-05-12 | Mitsubishi Cable Ind Ltd | Headlight adjustment device |
| JP2006168710A (en) * | 2004-10-14 | 2006-06-29 | Zizala Lichtsysteme Gmbh | Headlight for vehicle |
| JP2008068680A (en) * | 2006-09-12 | 2008-03-27 | Honda Motor Co Ltd | Lighting device for motorcycle |
| JP2010033930A (en) * | 2008-07-30 | 2010-02-12 | Ichikoh Ind Ltd | Vehicular lighting fixture |
| JP2010155486A (en) * | 2008-12-26 | 2010-07-15 | Yamaha Motor Co Ltd | Saddle riding type vehicle |
| JP2010161006A (en) * | 2009-01-09 | 2010-07-22 | Marumo Denki Kk | Lighting system |
| WO2014038177A1 (en) * | 2012-09-07 | 2014-03-13 | 三菱電機株式会社 | Vehicle headlight device |
| US9689549B2 (en) | 2012-09-07 | 2017-06-27 | Mitsubishi Electric Corporation | Vehicle headlight device |
| JP2017119470A (en) * | 2015-12-28 | 2017-07-06 | 川崎重工業株式会社 | vehicle |
| JP2017174735A (en) * | 2016-03-25 | 2017-09-28 | 株式会社小糸製作所 | Vehicular lighting fixture and vehicle including vehicular lighting fixture |
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|---|---|
| JP4078151B2 (en) | 2008-04-23 |
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