JP2004047327A - Projector-type lighting fixture for vehicle - Google Patents

Projector-type lighting fixture for vehicle Download PDF

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Publication number
JP2004047327A
JP2004047327A JP2002204230A JP2002204230A JP2004047327A JP 2004047327 A JP2004047327 A JP 2004047327A JP 2002204230 A JP2002204230 A JP 2002204230A JP 2002204230 A JP2002204230 A JP 2002204230A JP 2004047327 A JP2004047327 A JP 2004047327A
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Japan
Prior art keywords
reflecting
light
vehicle
projector
auxiliary
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JP2002204230A
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Japanese (ja)
Inventor
Hitoshi Yanai
谷内 均
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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Publication date
Application filed by Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to JP2002204230A priority Critical patent/JP2004047327A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve inconveniences that utilization rate of light flux is low and a headlamp is apt to be dark because about one-half of light source light has been covered by a shielding plate, in a projector type light fixture for vehicle of this conventional type. <P>SOLUTION: In this projector-type lighting fixture 1 for the vehicle, a notched part 2d is installed at least at either side of vertical direction of the main oval reflection surface 2, and in the notched part 2d, two auxiliary oval reflection faces 6 which make the neighborhood of a light source 3 have a first focus and of which the major axis Y is intersected by the major axis X of the main oval reflection surface 2 at an appropriate angle making it roughly left-right symmetry are provided. In each auxiliary oval reflection surface 6, a parabolic reflection surface 7 is installed so that a vicinity of a second focus of this auxiliary oval reflection surface is made to have a focus, and the reflecting direction is made to be roughly the direction of radiation. As a result, capturing rate of the light flux for the light source is improved. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、ヘッドランプ、フォグランプなど車両用の照明用灯具に関するものであり、詳細には基本的に回転楕円面反射面など楕円面系の反射面が主反射面として採用されている構成とされた車両用の照明用灯具に係るものである。
【0002】
【従来の技術】
従来のこの種の車両用プロジェクタ型灯具90の構成の例を示すものが図7であり、反射面としては、例えば楕円を長軸Xで回転させた回転楕円面など楕円系反射面91が採用され、この楕円系反射面91の第一焦点f1の位置には白熱電球のフィラメントなど光源92が配置されている。
【0003】
このようにすることで、光源92から放射され楕円系反射面91に反射する光は第二焦点f2に収束するものとなるので、この第二焦点f2の近傍に遮蔽板93を、収束する光束の例えば下半部を覆うように設け、光束の断面形状を下弦の半月状と整形する。
【0004】
そして、上記の光束の断面形状は投影レンズ94で投射することで上下左右が反転するものとなるので、下弦の半月状は上限の半月状となり、即ち、対向車に対する幻惑発生の要因となる上向き光を一切含まないものとなるので、すれ違い配光が得られるものとなる。
【0005】
【発明が解決使用とする課題】
しかしながら、前記した従来の車両用プロジェクタ型灯具90においては、夜間走行時のほとんどの状態で使用されるすれ違い配光を得るために遮蔽板93により光束の下半部を覆う、即ち、前記楕円系反射面91からの反射光の略半分を遮蔽するものであるので、光源92に対する光束利用率が低く、車両用プロジェクタ型灯具90が暗くなる問題点を生じている。
【0006】
また、投影レンズ94は比較的に小径(例えば直径70mm程度)の凸レンズ状であるので点灯時の発光面積が小さく対向車などからの視認性が低い問題点、および、プロジェクタ型としたことで中心照度が低く、遠方に対する視認性が十分でないなど性能上の問題点も生じている。
【0007】
【課題を解決するための手段】
本発明は上記した従来の課題を解決するための具体的手段として、光源と、該光源近傍を第一焦点とし長軸をこの車両用プロジェクタ型灯具の照射方向とする主楕円系反射面と、前記主楕円系反射面の第二焦点の照射方向前方には投影レンズが設けられて成る車両用プロジェクタ型灯具であり、前記主楕円系反射面の少なくとも上下方向の一方には切欠部が設けられ、該切欠部には前記光源の近傍を第一焦点とし長軸を前記主楕円系反射面の長軸と適宜角度で交差し略左右対称とした2つの補助楕円系反射面が設けられ、それぞれの補助楕円系反射面に対してはこの補助楕円系反射面の第二焦点近傍を焦点とし反射方向をほぼ照射方向とする放物系反射面が設けられていることを特徴とする車両用プロジェクタ型灯具を提供することで課題を解決するものである。
【0008】
【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3に符号1で示すものは本発明に係る車両用プロジェクタ型灯具であり、この車両用プロジェクタ型灯具1は、楕円を長軸Xで回転させた回転楕円面など主楕円系反射面2が採用され、この主楕円系反射面2の第一焦点f1の近傍に光源3が配置されるものであり、そして、遮蔽板4、投影レンズ5が設けられるものである点は従来例のものと同様である。
【0009】
ここで、本発明では前記主楕円系反射面2に切欠部2dを設けるものであり、前記切欠部2dは実際の実施に当たっては主楕円系反射面2の車両への取付け状態における上方であっても良く、下方であっても良く、或いは、上下両方であっても良いものであるが、ここでは、車両用プロジェクタ型灯具1の光量増加に効果が期待できる下方に設けるときの例で説明する。
【0010】
前記切欠部2dが設けられたことで、前記光源3から放射される光の内の下方、即ち、切欠部2dに向かうものは前記主楕円系反射面2に達することがないものとなる。よって、本発明では上記切欠部2dに対応する位置に補助楕円系反射面6を設けるものであり、この補助楕円系反射面6は光源3、あるいは、その近傍を第一焦点f11とする回転楕円面など楕円系反射面として形成されている。
【0011】
このときに、前記補助楕円系反射面6は、前記車両用プロジェクタ型灯具1を車両に取付けた状態で運転席側から見る状態でその長軸Yが、図2に示すように左側に向かい交差する補助楕円系反射面6Lと、右側に向かい交差する補助楕円系反射面6Rとの2面が設けられている。尚、この実施形態においては前記補助楕円系反射面6Lと補助楕円系反射面6Rとは長軸Xに対して線対称として形成されている例で示すが、本発明はこれを限定するものではない。
【0012】
従って、補助楕円系反射面6L、6Rの第二焦点f12も左右対称の位置となり、この実施形態においては、図3に示すように前記車両用プロジェクタ型灯具1を正面から見る状態で、前記第二焦点f12は前記主楕円系反射面2の最大外径の適宜な外側となるように設定されている。
【0013】
そして、左右それぞれの前記第二焦点f12に対応しては、この第二焦点f12、もしくは、その近傍を焦点とし、反射方向を前記長軸Xとほぼ並行とする回転放物面などとした放物系反射面7L、7Rが設けられ、前記第二焦点f12に収束する補助楕円系反射面6L、6Rからの反射光を照射方向に向かう平行光線として反射するものとし、これら放物系反射面7L、7Rの反射光の進行方向の前方には、適宜に水平方向に光を拡散するものなどとされたインナーレンズ8L、8Rが設けられ(図1、図2参照)ている。
【0014】
ここで、前記インナーレンズ8L、8Rと投影レンズ5とについて考察してみると、それらは共に車両用プロジェクタ型灯具1を点灯したときの発光部を構成するものであるので、機能的、デザイン的な面で一体化が要求されることが多いが、このような場合には図2に示すように投影レンズ5をフランジ5aでインナーレンズ8(L、R)に一体化させることで、インナーレンズ8が投影レンズ5を保持するものとすれば良い。尚、図2中に符号10で示ものはアウターレンズであり、このアウターレンズ10は、車体デザインに沿う形状などとされて、前記投影レンズ5、インナーレンズ8を外側から覆い美感を向上させる。
【0015】
図4は上記のように構成した本発明の車両用プロジェクタ型灯具1の配光特性Dの例を示すものであり、図中に符号D1で示すものは主楕円系反射面2と投影レンズ5とにより形成される主配光であり、図中に符号D2で示すものは補助楕円系反射面6(L、R)と放物系反射面7(L、R)とインナーレンズ8(L、R)とにより形成される補助配光である。そして、配光特性Dは主配光D1と補助配光D2との加算されたものである。
【0016】
ここで、前記補助配光D2について考察してみると、この補助配光D2は、本来、遮蔽板4により遮蔽されていた主楕円系反射面2の下半部からの光を補助楕円系反射面6で回収するものであるので、前記補助配光D2の光量は従来例の光量に対しての増加分となる。
【0017】
従って、車両用プロジェクタ型灯具1としては、主楕円系反射面2からの反射光のみで従来例と変わらぬ光量と配光形状が得られているものであるので、前記補助楕円系反射面6および放物系反射面7により得られる光量の配布には自由度が高く、例えば、略正面方向をスポット的に照射するものとして遠方視界を向上させる。或いは、水平方向に広く拡散して市街地走行において広い視界を確保するなど、様々な対応が可能である。また、投影レンズ5の左右にはインナーレンズ8(L、R)が存在するものとなり、点灯時においては発光面積が拡大され、対向車などからの視認性も向上する。
【0018】
図5、図6は本発明に係る車両用プロジェクタ型灯具1の別な実施形態であり、前の実施形態では切欠部2dは主楕円系反射面2の下方にのみ設けられるものとされていたが、この実施形態では上方に設けられる切欠部2uと、下方に設けられる切欠部2dとで2箇所に設けられるものとされている。
【0019】
また、上記した下方に設けられる切欠部2dに対応しては、前の実施形態と同様な構成とした補助楕円系反射面6(Ld、Rd)が設けられると共に、上方に設けられる切欠部2uに対応しては、前記補助楕円系反射面6(Ld、Rd)を長軸Xを中心として180°回転させたような形状として補助楕円系反射面6(Lu、Ru)が設けられている。
【0020】
そして、補助楕円系反射面6Ldに対応しては放物系反射面7Ldが設けられ、補助楕円系反射面6Rdに対応しては放物系反射面7Rdが設けられ、補助楕円系反射面6Luに対応しては放物系反射面7Luが設けられ、補助楕円系反射面6Ruに対応しては放物系反射面7Ruが設けられている。また、それぞれの放物系反射面7(Ld、Lu、Rd、Ru)の照射方向前方にはインナーレンズ8(Ld、Lu、Rd、Ru)が設けられるものとされている。
【0021】
このように構成することで、この実施形態においては、前の実施形態の車両用プロジェクタ型灯具1と同様に光量の増加による明るさの向上が期待できると共に、投影レンズ5とインナーレンズ8とを組み合わせたときの形状も水平、垂直方向に対称形状となり、デザイン面での向上も期待できるものとなる。また、投影レンズ5に対するインナーレンズ8の面積も増すものとなり、点灯時の対向車などからの視認性も一層に向上するものとなる。
【0022】
また、図5、図6中に符号9で示すものは回転軸であり、この回転軸9は、例えば、車両の左側に取付けられる車両用プロジェクタ型灯具1では、左側の放物系反射面7L(或いは、7Ld、7Luの何れか、または、7Ld、7Luの双方)に設けられ、前記左側の放物系反射面7Lを、焦点を通る垂直方向の軸で回動可能としている。そして前記回転軸9はステアリング装置などからの信号を受け、車両に左旋回を行うための操作が行われたときには、左側の放物系反射面7Lを左方向に旋回させる。よって、車両の旋回時には、以後に車両が進行する方向をより明るく照射するものとなる。
【0023】
上記の構成は当然に車両の右側に取付けられる車両用プロジェクタ型灯具1の右側の放物系反射面7Rに対しても実施されるものとされ、車両の右旋回時にも対応できるものとされている。尚、例えば2輪車用など1灯のみが採用される車種に対応させて1つの車両用プロジェクタ型灯具1の左側の放物系反射面7Lと右側の放物系反射面7Rとに回転軸を設けるなどは自在である。
【0024】
【発明の効果】
以上に説明したように本発明により、主楕円系反射面の少なくとも上下方向の一方には切欠部が設けられ、該切欠部には光源の近傍を第一焦点とし長軸を前記主楕円系反射面の長軸と適宜角度で交差し略左右対称とした2つの補助楕円系反射面が設けられ、それぞれの補助楕円系反射面に対してはこの補助楕円系反射面の第二焦点近傍を焦点とし反射方向をほぼ照射方向とする放物系反射面が設けられている車両用プロジェクタ型灯具としたことで、第一には、光源に対する光束補足率を向上し、同一の光源でも一層に明るい車両用灯具の実現を可能とし、この種の車両用プロジェクタ型灯具の性能向上にきわめて優れた効果を奏するものである。
【0025】
また第二には、投影レンズに加えてインナーレンズを採用するものとして、点灯時の発光面積を増加させ、対向車、歩行者などからの視認性を向上させて安全性の向上にも極めて優れた効果を奏する。さらには、主楕円系反射面と、補助楕円系反射面および放物系反射面による二系統の照射光が得られるものとなったことで、一方を回動させコーナリングランプも兼ねられるものとして、この種の車両用プロジェクタ型灯具の機能向上にも極めて優れた効果を奏する。
【図面の簡単な説明】
【図1】本発明に係る車両用プロジェクタ型灯具の実施形態を示す斜視図である。
【図2】図1のA−A線に沿う断面図である。
【図3】図2のB−B線に沿う断面図である。
【図4】本発明に係る車両用プロジェクタ型灯具における配光特性の形成状態を示す説明図である。
【図5】同じく本発明に係る車両用プロジェクタ型灯具の別の実施形態を示す斜視図である。
【図6】図5のC−C線に沿う断面図である。
【図7】従来例を示す断面図である。
【符号の説明】
1……車両用プロジェクタ型灯具
2……主楕円系反射面
2d、2u……切欠部
3……光源
4……遮蔽板
5……投影レンズ
6(L、Ld、Lu、R、Rd、Ru)……補助楕円系反射面
7(L、Ld、Lu、R、Rd、Ru)……放物系反射面
8(L、Ld、Lu、R、Rd、Ru)……インナーレンズ
9……回転軸
10……アウターレンズ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting device for a vehicle, such as a headlamp or a fog lamp, and more particularly to a configuration in which an ellipsoidal reflecting surface such as a spheroidal reflecting surface is basically employed as a main reflecting surface. And a lighting device for a vehicle.
[0002]
[Prior art]
FIG. 7 shows an example of the configuration of a conventional projector-type lamp 90 for a vehicle of this type. An elliptical reflecting surface 91 such as a spheroid obtained by rotating an ellipse about a long axis X is used as the reflecting surface. A light source 92 such as a filament of an incandescent lamp is disposed at the position of the first focal point f1 of the elliptical reflecting surface 91.
[0003]
By doing so, the light emitted from the light source 92 and reflected on the elliptical reflecting surface 91 converges on the second focal point f2. For example, the light beam is provided so as to cover the lower half, and the cross-sectional shape of the light beam is shaped like a crescent half moon.
[0004]
Then, since the cross-sectional shape of the light beam is inverted up and down and left and right by projecting it with the projection lens 94, the half-moon shape of the lower chord becomes the upper-limit half-moon shape, that is, the upward direction which causes dazzling to oncoming vehicles. Since the light does not include any light, a passing light distribution can be obtained.
[0005]
[Problems to be solved and used by the invention]
However, in the above-described conventional projector-type lamp 90 for a vehicle, the lower half of the light beam is covered by a shielding plate 93 in order to obtain a low-pass light distribution used in most situations during night driving, ie, the elliptical system. Since almost half of the reflected light from the reflecting surface 91 is shielded, the luminous flux utilization rate for the light source 92 is low, and the projector-type lamp 90 for a vehicle becomes dark.
[0006]
Further, since the projection lens 94 is a convex lens having a relatively small diameter (for example, a diameter of about 70 mm), the light emission area at the time of lighting is small and visibility from an oncoming vehicle is low. There are also problems in performance such as low illuminance and insufficient visibility to distant places.
[0007]
[Means for Solving the Problems]
The present invention, as a specific means for solving the above-described conventional problems, a light source, a main elliptical reflecting surface having a long axis near the light source as a first focal point and a long axis as an irradiation direction of the vehicle projector lamp, A vehicular projector-type lamp in which a projection lens is provided in front of an irradiation direction of a second focal point of the main elliptic reflecting surface, and a cutout is provided on at least one of the vertical directions of the main elliptic reflecting surface. The notch portion is provided with two auxiliary elliptical reflecting surfaces which are substantially bilaterally symmetrical with the first focal point in the vicinity of the light source, the major axis intersecting the major axis of the main elliptic reflecting surface at an appropriate angle, and being substantially symmetrical. A vehicular projector characterized in that a parabolic reflecting surface is provided for the auxiliary elliptical reflecting surface of (1), the focal point being in the vicinity of the second focal point of the auxiliary elliptical reflecting surface, and the reflecting direction being substantially the irradiation direction. Challenges by Providing Lighting Fixtures It is intended to attain.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIGS. 1 to 3 denotes a vehicle projector lamp according to the present invention. The vehicle projector lamp 1 has a main elliptic reflection such as a spheroid obtained by rotating an ellipse about a long axis X. In the conventional example, the light source 3 is disposed near the first focal point f1 of the main elliptic reflecting surface 2 and the shielding plate 4 and the projection lens 5 are provided. It is similar to that of
[0009]
Here, in the present invention, the notch 2d is provided in the main elliptic reflecting surface 2, and the notch 2d is located above the main elliptic reflecting surface 2 in the state of attachment to the vehicle in actual implementation. Although it may be lower, or may be both upper and lower, here, an example will be described in which the projector-type lamp 1 is provided below which is expected to be effective in increasing the amount of light. .
[0010]
By providing the notch 2d, the lower part of the light emitted from the light source 3, that is, the light going to the notch 2d does not reach the main elliptic reflection surface 2. Therefore, in the present invention, the auxiliary elliptical reflecting surface 6 is provided at a position corresponding to the notch 2d, and the auxiliary elliptical reflecting surface 6 is a spheroid having the light source 3 or its vicinity as the first focal point f11. It is formed as an elliptical reflection surface such as a surface.
[0011]
At this time, the auxiliary elliptical reflecting surface 6 crosses the major axis Y toward the left side as shown in FIG. 2 when the projector type lamp 1 for a vehicle is mounted on a vehicle and viewed from the driver's seat side. And an auxiliary elliptical reflecting surface 6R that crosses rightward. In this embodiment, the auxiliary elliptical reflecting surface 6L and the auxiliary elliptical reflecting surface 6R are shown as being symmetric with respect to the major axis X, but the present invention is not limited to this. Absent.
[0012]
Accordingly, the second focal points f12 of the auxiliary elliptical reflecting surfaces 6L and 6R are also symmetrical, and in this embodiment, the vehicle projector-type lamp 1 is viewed from the front as shown in FIG. The bifocal f12 is set so as to be appropriately outside the maximum outer diameter of the main elliptic reflecting surface 2.
[0013]
In response to the left and right second focal points f12, the second focal point f12 or the vicinity thereof has a focal point, and a paraboloid of revolution or the like whose reflection direction is substantially parallel to the long axis X is used. The object-based reflecting surfaces 7L and 7R are provided, and the reflected light from the auxiliary elliptic-based reflecting surfaces 6L and 6R converging on the second focal point f12 is reflected as parallel rays directed toward the irradiation direction. In front of the traveling directions of the reflected lights of 7L and 7R, inner lenses 8L and 8R that appropriately diffuse light in the horizontal direction are provided (see FIGS. 1 and 2).
[0014]
Here, when considering the inner lenses 8L and 8R and the projection lens 5, both of them constitute a light emitting portion when the vehicle-type projector lamp 1 is turned on. In many cases, the projection lens 5 is integrated with the inner lens 8 (L, R) by the flange 5a as shown in FIG. What is necessary is just to let 8 hold the projection lens 5. In FIG. 2, the reference numeral 10 denotes an outer lens. The outer lens 10 has a shape conforming to the vehicle body design, and covers the projection lens 5 and the inner lens 8 from the outside to improve the beauty.
[0015]
FIG. 4 shows an example of the light distribution characteristic D of the projector-type lighting device 1 for a vehicle according to the present invention configured as described above. In FIG. The main light distribution formed by the above, and indicated by reference numeral D2 in the figure, is an auxiliary elliptical reflecting surface 6 (L, R), a parabolic reflecting surface 7 (L, R), and an inner lens 8 (L, R). R) and the auxiliary light distribution. The light distribution characteristic D is the sum of the main light distribution D1 and the auxiliary light distribution D2.
[0016]
Here, considering the auxiliary light distribution D2, the auxiliary light distribution D2 reflects light from the lower half of the main elliptic reflection surface 2 originally shielded by the shielding plate 4 in the auxiliary elliptical reflection. Since the light is collected on the surface 6, the light amount of the auxiliary light distribution D2 is an increase from the light amount of the conventional example.
[0017]
Therefore, the projector-type lamp 1 for a vehicle has the same light quantity and light distribution shape as those of the conventional example by only the reflected light from the main elliptic reflecting surface 2. There is a high degree of freedom in distributing the amount of light obtained by the parabolic reflective surface 7 and, for example, irradiates the spot substantially in the frontal direction to improve the far field of view. Alternatively, various measures are possible, such as widespreading in the horizontal direction to secure a wide field of view in city driving. Also, inner lenses 8 (L, R) are present on the left and right sides of the projection lens 5, so that when lit, the light emitting area is enlarged, and visibility from oncoming vehicles and the like is also improved.
[0018]
FIGS. 5 and 6 show another embodiment of the vehicular projector-type lamp 1 according to the present invention. In the previous embodiment, the notch 2 d is provided only below the main elliptic reflecting surface 2. However, in this embodiment, a cutout 2u provided above and a cutout 2d provided below are provided at two places.
[0019]
In addition, corresponding to the notch 2d provided below, the auxiliary elliptical reflecting surface 6 (Ld, Rd) having the same configuration as that of the previous embodiment is provided, and the notch 2u provided above. , The auxiliary elliptical reflection surface 6 (Lu, Ru) is provided in a shape such that the auxiliary elliptical reflection surface 6 (Ld, Rd) is rotated by 180 ° about the long axis X. .
[0020]
A parabolic reflecting surface 7Ld is provided corresponding to the auxiliary elliptical reflecting surface 6Ld, and a parabolic reflecting surface 7Rd is provided corresponding to the auxiliary elliptic reflecting surface 6Rd. Is provided with a parabolic reflecting surface 7Lu, and corresponding to the auxiliary elliptical reflecting surface 6Ru, a parabolic reflecting surface 7Ru is provided. An inner lens 8 (Ld, Lu, Rd, Ru) is provided in front of each parabolic reflecting surface 7 (Ld, Lu, Rd, Ru) in the irradiation direction.
[0021]
With this configuration, in this embodiment, similar to the vehicle-type projector lamp 1 of the previous embodiment, improvement in brightness due to an increase in the amount of light can be expected, and the projection lens 5 and the inner lens 8 are connected to each other. The shape when combined is also symmetrical in the horizontal and vertical directions, and improvement in design can be expected. Further, the area of the inner lens 8 with respect to the projection lens 5 is also increased, and the visibility from an oncoming vehicle or the like at the time of lighting is further improved.
[0022]
5 and 6, reference numeral 9 denotes a rotating shaft. The rotating shaft 9 is, for example, a parabolic reflecting surface 7L on the left side of the vehicle projector type lamp 1 mounted on the left side of the vehicle. (Or one of 7Ld and 7Lu, or both 7Ld and 7Lu), and the left parabolic reflecting surface 7L is rotatable about a vertical axis passing through the focal point. The rotation shaft 9 receives a signal from a steering device or the like, and turns the left parabolic reflective surface 7L to the left when the vehicle is operated to make a left turn. Therefore, at the time of turning of the vehicle, the direction in which the vehicle advances thereafter is illuminated more brightly.
[0023]
The above-described configuration is naturally applied to the parabolic reflective surface 7R on the right side of the vehicle projector-type lamp 1 mounted on the right side of the vehicle, and can cope with the right turn of the vehicle. ing. The left and right parabolic reflecting surfaces 7L and 7R of one projector-type lamp 1 for a vehicle correspond to the type of vehicle in which only one lamp is used, such as a motorcycle. And the like can be freely provided.
[0024]
【The invention's effect】
As described above, according to the present invention, at least one of the vertical directions of the main elliptic reflecting surface is provided with a notch, and the notch has a first focal point near the light source and a long axis whose main axis is the main elliptic reflecting surface. There are provided two auxiliary elliptical reflecting surfaces which intersect with the long axis of the surface at an appropriate angle and are substantially symmetrical, and each auxiliary elliptical reflecting surface is focused on the vicinity of the second focal point of the auxiliary elliptical reflecting surface. First, the vehicle-projector-type lamp provided with a parabolic reflecting surface whose reflection direction is substantially the irradiation direction improves the luminous flux capture rate with respect to the light source, and is even brighter with the same light source. This makes it possible to realize a vehicle lamp and has an extremely excellent effect in improving the performance of this type of vehicle projector lamp.
[0025]
Second, the use of an inner lens in addition to the projection lens increases the light emission area when lit, improves visibility from oncoming vehicles, pedestrians, etc., and is extremely superior in improving safety. Has the effect. Furthermore, by being able to obtain two types of irradiation light by the main ellipsoidal reflecting surface, the auxiliary elliptical reflecting surface and the parabolic reflecting surface, one of which is turned to double as a cornering lamp, This type of vehicle projector type lamp also has an extremely excellent effect on improving the function.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a vehicle projector lamp according to the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along the line BB of FIG. 2;
FIG. 4 is an explanatory diagram showing a state of formation of light distribution characteristics in the vehicle projector lamp according to the present invention.
FIG. 5 is a perspective view showing another embodiment of the vehicle projector-type lamp according to the present invention.
FIG. 6 is a sectional view taken along line CC of FIG. 5;
FIG. 7 is a sectional view showing a conventional example.
[Explanation of symbols]
1 ... Vehicle projector lamp 2 ... Main elliptical reflecting surface 2d, 2u ... Notch 3 ... Light source 4 ... Shielding plate 5 ... Projection lens 6 (L, Ld, Lu, R, Rd, Ru) ) ... Auxiliary elliptical reflecting surface 7 (L, Ld, Lu, R, Rd, Ru) ... Parabolic reflecting surface 8 (L, Ld, Lu, R, Rd, Ru) ... Inner lens 9 ... Rotating shaft 10: Outer lens

Claims (3)

光源と、該光源近傍を第一焦点とし長軸をこの車両用プロジェクタ型灯具の照射方向とする主楕円系反射面と、前記主楕円系反射面の第二焦点の照射方向前方には投影レンズが設けられて成る車両用プロジェクタ型灯具であり、前記主楕円系反射面の少なくとも上下方向の一方には切欠部が設けられ、該切欠部には前記光源の近傍を第一焦点とし長軸を前記主楕円系反射面の長軸と適宜角度で交差し略左右対称とした2つの補助楕円系反射面が設けられ、それぞれの補助楕円系反射面に対してはこの補助楕円系反射面の第二焦点近傍を焦点とし反射方向をほぼ照射方向とする放物系反射面が設けられていることを特徴とする車両用プロジェクタ型灯具。A light source, a main elliptical reflecting surface having a first focus near the light source and a long axis as an irradiation direction of the vehicle-type projector lamp, and a projection lens in front of the main elliptic reflecting surface in a second focus irradiation direction. Is provided with a notch in at least one of the up and down direction of the main elliptical reflection surface, the notch has a long axis with a first focus near the light source. There are provided two auxiliary elliptical reflecting surfaces which intersect at an appropriate angle with the major axis of the main elliptic reflecting surface and are substantially symmetrical with respect to each other. A projector-type lamp for a vehicle, comprising a parabolic reflecting surface having a focal point near the two focal points and a reflecting direction substantially equal to an irradiation direction. 前記放物系反射面は焦点近傍を軸として略水平方向に回動可能とされていることを特徴とする請求項1記載の車両用プロジェクタ型灯具。2. The projector-type lamp according to claim 1, wherein the parabolic reflecting surface is rotatable in a substantially horizontal direction about an axis near the focal point. 前記放物系反射面の照射方向前方にはインナーレンズが設けられ、このインナーレンズが前記投影レンズを保持する構成とされていることを特徴とする請求項1または請求項2記載の車両用プロジェクタ型灯具。The vehicle projector according to claim 1 or 2, wherein an inner lens is provided in front of the parabolic reflecting surface in the irradiation direction, and the inner lens is configured to hold the projection lens. Type lighting.
JP2002204230A 2002-07-12 2002-07-12 Projector-type lighting fixture for vehicle Pending JP2004047327A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006156191A (en) * 2004-11-30 2006-06-15 Koito Mfg Co Ltd Vehicular headlight
JP2007172930A (en) * 2005-12-20 2007-07-05 Stanley Electric Co Ltd Vehicular headlight
JP2007287490A (en) * 2006-04-17 2007-11-01 Stanley Electric Co Ltd Vehicular lighting fixture
JP2008041598A (en) * 2006-08-10 2008-02-21 Ichikoh Ind Ltd Lamp for vehicle
CN102162615A (en) * 2010-02-18 2011-08-24 市光工业株式会社 Vehicle headlamp
KR101555858B1 (en) * 2013-12-17 2015-09-25 에스엘 주식회사 A head lamp for vehicle
KR20160066410A (en) * 2014-12-02 2016-06-10 현대모비스 주식회사 Lamp apparatus for an automobile
CN108397744A (en) * 2017-02-04 2018-08-14 通用汽车环球科技运作有限责任公司 Vehicle head lamp

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006156191A (en) * 2004-11-30 2006-06-15 Koito Mfg Co Ltd Vehicular headlight
JP2007172930A (en) * 2005-12-20 2007-07-05 Stanley Electric Co Ltd Vehicular headlight
JP2007287490A (en) * 2006-04-17 2007-11-01 Stanley Electric Co Ltd Vehicular lighting fixture
JP4587048B2 (en) * 2006-04-17 2010-11-24 スタンレー電気株式会社 Vehicle lighting
JP2008041598A (en) * 2006-08-10 2008-02-21 Ichikoh Ind Ltd Lamp for vehicle
CN102162615A (en) * 2010-02-18 2011-08-24 市光工业株式会社 Vehicle headlamp
KR101555858B1 (en) * 2013-12-17 2015-09-25 에스엘 주식회사 A head lamp for vehicle
KR20160066410A (en) * 2014-12-02 2016-06-10 현대모비스 주식회사 Lamp apparatus for an automobile
KR102326048B1 (en) * 2014-12-02 2021-11-17 현대모비스 주식회사 Lamp apparatus for an automobile
CN108397744A (en) * 2017-02-04 2018-08-14 通用汽车环球科技运作有限责任公司 Vehicle head lamp

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