JP2015041554A - Head lamp for vehicle - Google Patents

Head lamp for vehicle Download PDF

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JP2015041554A
JP2015041554A JP2013172812A JP2013172812A JP2015041554A JP 2015041554 A JP2015041554 A JP 2015041554A JP 2013172812 A JP2013172812 A JP 2013172812A JP 2013172812 A JP2013172812 A JP 2013172812A JP 2015041554 A JP2015041554 A JP 2015041554A
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vehicle
light
reflector
reflecting surfaces
reflected
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JP6162543B2 (en
Inventor
隆二 植木
Ryuji Ueki
隆二 植木
小池 輝夫
Teruo Koike
輝夫 小池
能子 木村
Yoshiko Kimura
能子 木村
内田 光裕
Mitsuhiro Uchida
光裕 内田
祥子 川野辺
Shoko Kawanobe
祥子 川野辺
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To give no glare to facing vehicles and pedestrians while the forward visibility being excellent for a vehicle driver and further capable of illuminating the facing vehicles and pedestrians on the side of facing vehicle.SOLUTION: A head lamp for vehicle 1 comprises: a reflector 10; and a light source 2, in which in a vertical central part of the front face of the reflector 10, traveling light-distribution formation reflection planes 12a to 14b are formed; on the upper and lower sides of the reflection planes 12a to 14b as well as on the front face of the reflector 10, reflection planes 15a to 17d are formed; the light emitted from the light source 2 is reflected forward by the reflection planes 12a to 14b to form light-distribution of traveling beams; the light emitted from the light source 2 is reflected by the reflection planes 15a to 17d toward regions D to F which being deviated from the optical axis on the side of facing vehicles in a virtual screen while partly overlapping with each other; and each of the brightness of the light reflected by facing-vehicle side illumination reflection planes 15a to 17d is 625 cd or less.

Description

本発明は、車両用前照灯に関する。   The present invention relates to a vehicle headlamp.

走行用ビーム(ハイビーム)の配光を前方に形成する走行用前照灯は、車両から遠く離れた前方を照明するものである。そのため、走行用ビームは、車両のドライバーにとっては前方の視認性が高いが、前走車、対向車及び歩行者にグレアを与えてしまう。
一方、すれ違い用ビーム(ロービーム)の配光を前方に形成するすれ違い用前照灯は、灯具光軸を通る水平面よりも下の領域を照明するものである。そのため、すれ違い用ビームは、前走者、対向車及び歩行者にグレアを与えないが、車両のドライバーにとっては前方の視認性が低い。
配光可変型前照灯も開発されているが(例えば、特許文献1〜4参照)、そのような配光可変型前照灯は前走車及び対向四輪車に対する眩しさ軽減に有効であるが、対向二輪車及び歩行者にとっては眩しさを与えてしまう。
A traveling headlamp that forms a light distribution of a traveling beam (high beam) forward illuminates the front far away from the vehicle. For this reason, the traveling beam has high front visibility for the driver of the vehicle, but gives glare to the preceding vehicle, the oncoming vehicle, and the pedestrian.
On the other hand, a passing headlamp that forms a light distribution of a passing beam (low beam) forward illuminates a region below a horizontal plane that passes through the lamp optical axis. Therefore, the passing beam does not give glare to the forerunner, the oncoming vehicle, and the pedestrian, but the forward visibility is low for the driver of the vehicle.
Light distribution variable type headlamps have also been developed (see, for example, Patent Documents 1 to 4), but such light distribution variable type headlamps are effective in reducing glare on front vehicles and oncoming four-wheel vehicles. However, it is dazzling for oncoming motorcycles and pedestrians.

特開平9−39648号公報JP-A-9-39648 特開2002−289008号公報JP 2002-289008 A 特開2009−220631号公報JP 2009-220631 A 特開平1−244934号公報JP-A-1-244934

走行用前照灯、すれ違い用前照灯及び配光可変型前照灯は何れも一長一短である。
そこで、本発明が解決しようとする課題は、車両のドライバーにとって前方の視認性が良く、更に対向車及び対向車側の歩行者を照明することができ、対向車及び歩行者に眩しさを与えないようにすることである。
The traveling headlamp, the passing headlamp, and the variable light distribution headlamp are all advantages and disadvantages.
Therefore, the problem to be solved by the present invention is that the driver of the vehicle has good front visibility, and can illuminate the oncoming vehicle and the pedestrian on the oncoming vehicle side, giving glare to the oncoming vehicle and the pedestrian. It is to avoid.

以上の課題を解決するべく、請求項1に係る発明は、前面が凹面状のリフレクターと、前記リフレクターの前面側に設けられ、正面から見て前記リフレクターの中央部に配置された光源と、を備え、前記リフレクターの前面の上下中央部には、複数の走行用配光形成反射面が形成され、前記リフレクターの前面であって前記走行用配光形成反射面の上側及び下側には、複数の対向車側照明反射面が形成され、前記複数の走行用配光形成反射面が、前記光源により発せられた光を前方へ反射させて、前記リフレクターに正対する仮想スクリーンに走行用ビームとしての配光を形成し、前記複数の対向車側照明反射面が、前記光源により発せられた光を、前記仮想スクリーンのうち前記光軸から対向車側にずれているとともに互いに一部重なり合った複数の領域に向けて反射させ、前記複数の対向車側照明反射面によって反射される光の光度がそれぞれ625cd以下であることを特徴とする車両用前照灯である。   In order to solve the above problems, the invention according to claim 1 includes: a reflector having a concave front surface; and a light source provided on a front surface side of the reflector and disposed at a central portion of the reflector as viewed from the front. A plurality of light distribution forming reflecting surfaces for traveling are formed in the upper and lower central portions of the front surface of the reflector, and a plurality of light distribution forming reflecting surfaces on the upper side and the lower side of the light distribution forming reflecting surface for traveling are formed on the front surface of the reflector. An oncoming vehicle side illumination reflecting surface is formed, and the plurality of running light distribution forming reflecting surfaces reflect light emitted by the light source forward, and the virtual screen directly facing the reflector serves as a running beam. The plurality of oncoming vehicle side illumination reflecting surfaces form a light distribution, and the light emitted by the light source is shifted from the optical axis of the virtual screen to the oncoming vehicle side and partially overlaps each other. It was reflected to a plurality of regions, a headlamp for a vehicle, wherein the intensity of light reflected by the plurality of the oncoming vehicle side illumination reflection surface is 625cd follows.

請求項2に係る発明は、前記複数の対向車側照明反射面のうち、前記複数の領域のうち同一の領域に向けて反射させる対向車側照明反射面同士が互いに離れていることを特徴とする請求項1に記載の車両用前照灯である。   The invention according to claim 2 is characterized in that, among the plurality of oncoming vehicle side illumination reflecting surfaces, the oncoming vehicle side illumination reflecting surfaces that are reflected toward the same region among the plurality of regions are separated from each other. The vehicle headlamp according to claim 1.

本発明によれば、走行用ビームとしての配光が走行用配光形成反射面によって形成されるから、この車両用灯具が取り付けられた車両のドライバーにとって前方の視認性が良い。
光源によって発せられた光が複数の対向車側照明反射面によって対向車側へ向けて反射されるから、対向車及び対向車側の歩行者を照明することができる。
対向車側照明反射面によって反射される光の光度が625cd以下である。対向車側の歩道にいる歩行者等にとっては、これら対向車側照明反射面によって反射された光が別々の方角から進行してきているように見える。そのため、歩行者等にとっては眩しさを感じにくい。
According to the present invention, since the light distribution as the traveling beam is formed by the traveling light distribution forming reflecting surface, the forward visibility is good for the driver of the vehicle to which the vehicle lamp is attached.
Since the light emitted by the light source is reflected toward the oncoming vehicle by the plurality of oncoming vehicle-side illumination reflecting surfaces, it is possible to illuminate the oncoming vehicle and the oncoming vehicle side pedestrian.
The luminous intensity of the light reflected by the oncoming vehicle side illumination reflecting surface is 625 cd or less. For pedestrians and the like who are on the sidewalk on the oncoming vehicle side, the light reflected by these oncoming vehicle side illumination reflecting surfaces appears to travel from different directions. Therefore, it is difficult for pedestrians to feel dazzling.

車両用前照灯の正面図である。It is a front view of a vehicle headlamp. 車両が通行する道路の平面図である。It is a top view of the road where a vehicle passes. 車両が通行する道路の側面図である。It is a side view of the road where a vehicle passes. 車両用前照灯に正対する仮想スクリーン上において走行用ビームの規格を満たす光度を説明するための図面である。It is drawing for demonstrating the luminous intensity which satisfy | fills the specification of the beam for driving | running | working on the virtual screen which faces a vehicle headlamp. 車両用前照灯に正対する仮想スクリーン上における反射光の照射領域を示した図面である。It is drawing which showed the irradiation area | region of the reflected light on the virtual screen facing a vehicle headlamp.

以下に、本発明を実施するための形態について図面を用いて説明する。但し、以下に述べる実施形態には、本発明を実施するために技術的に好ましい種々の限定が付されているが、本発明の技術的範囲を以下の実施形態及び図示例に限定するものではない。   EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, the embodiments described below have various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Absent.

図1は、マルチリフレクター型の車両用前照灯1の正面図である。図1に示す左右は、車両の進行方向に向かって見て定めたものである。   FIG. 1 is a front view of a multi-reflector vehicular headlamp 1. The left and right shown in FIG. 1 are determined by looking toward the traveling direction of the vehicle.

この車両用前照灯1は、走行用ビーム(ハイビーム)の前照灯であって、対向車の乗員又は歩行者に与える眩しさを低減させるものである。そのため、対向車又は歩行者が車両の前方にいても、この車両用前照灯1を消灯せずに済み、この車両用前照灯1は夜間中に常時点灯して使用可能なものである。この車両用前照灯1は2つで一組のセットを構成し、一方の車両用前照灯1が車両の右前部に取り付けられ、他方の車両用前照灯1が車両の左前部に取り付けられている。   The vehicular headlamp 1 is a traveling beam (high beam) headlamp, and reduces glare on an oncoming vehicle occupant or pedestrian. Therefore, even if an oncoming vehicle or a pedestrian is in front of the vehicle, it is not necessary to turn off the vehicle headlamp 1, and the vehicle headlamp 1 can be used by always lighting at night. . The two vehicle headlamps 1 constitute a set, and one vehicle headlamp 1 is mounted on the right front portion of the vehicle, and the other vehicle headlamp 1 is mounted on the left front portion of the vehicle. It is attached.

この車両用前照灯1はバルブ2及びリフレクター10を備える。
バルブ2は、ハロゲン電球、白熱電球、放電灯(例えば、高輝度放電灯(HID)、高圧金属蒸気放電灯等)その他のバルブである。
リフレクター10が前側で開口した椀状に形作られ、リフレクター10の前面が凹面状に形成され、リフレクター10の後面が凸面状に形成されている。リフレクター10の中央部を装着孔11が前後に貫通し、バルブ2がリフレクター10の後ろから装着孔11に差し込まれ、バルブ2の基部がリフレクター10に固定され、そのバルブ2がリフレクタ10の前面の前側に配置されている。正面から見て、リフレクター10の直径が100mmであることが好ましい。
The vehicle headlamp 1 includes a bulb 2 and a reflector 10.
The bulb 2 is a halogen bulb, an incandescent bulb, a discharge lamp (for example, a high-intensity discharge lamp (HID), a high-pressure metal vapor discharge lamp, or the like) and other bulbs.
The reflector 10 is formed in a bowl shape opened on the front side, the front surface of the reflector 10 is formed in a concave shape, and the rear surface of the reflector 10 is formed in a convex shape. The mounting hole 11 penetrates through the center of the reflector 10 back and forth, the valve 2 is inserted into the mounting hole 11 from behind the reflector 10, the base of the valve 2 is fixed to the reflector 10, and the valve 2 is connected to the front surface of the reflector 10. Located on the front side. When viewed from the front, the reflector 10 preferably has a diameter of 100 mm.

リフレクター10の前面が複数の領域に格子状に分割され、それら領域には反射面12a,13a,13b,14a,14b,15a,15b,16a〜16d,17a〜17dがそれぞれ形成されている。反射面12a,13a,13b,14a,14bが走行用配光形成反射面であり、反射面15a,15b,16a〜16d,17a〜17dが対向車側照明反射面である。リフレクター10の前面のうち上下方向の中央部に反射面12a,13a,13bが配置され、その前面のうち上部に反射面15a,16a,16b,17a,17bが配置され、その前面のうち下部に反射面15b,16c,16d,17c,17dが配置されている。   The front surface of the reflector 10 is divided into a plurality of regions in a lattice shape, and reflective surfaces 12a, 13a, 13b, 14a, 14b, 15a, 15b, 16a to 16d, and 17a to 17d are formed in these regions. The reflecting surfaces 12a, 13a, 13b, 14a, and 14b are light distribution forming reflecting surfaces for travel, and the reflecting surfaces 15a, 15b, 16a to 16d, and 17a to 17d are oncoming vehicle side lighting reflecting surfaces. Reflective surfaces 12a, 13a, 13b are arranged at the center in the vertical direction of the front surface of the reflector 10, reflective surfaces 15a, 16a, 16b, 17a, 17b are arranged at the upper portion of the front surface, and at the lower portion of the front surface. Reflecting surfaces 15b, 16c, 16d, 17c, and 17d are arranged.

反射面12aはリフレクター10の前面の中央部に形成され、装着孔11が反射面12aによって囲繞されている。
反射面13a,13bは反射面12aの左右にそれぞれ形成されている。反射面13aの左側に反射面14aが形成され、反射面13bの右側に反射面14bが形成されている。
反射面15a,15bは反射面12aの上下にそれぞれ形成されている。
反射面16a,16bが反射面15aの左右にそれぞれ形成されている。反射面16c,16dが反射面15bの左右にそれぞれ配置されている。反射面16aの左側に反射面17aが形成され、反射面16bの右側に反射面17bが形成され、反射面16cの左側に反射面17cが形成され、反射面16dの右側に反射面17dが形成されている。反射面16a,16cが反射面13aの上下にそれぞれあり、反射面16b,16dが反射面13bの上下にそれぞれあり、反射面17a,17cが反射面17b,17dが反射面14bの上下にそれぞれある。
The reflection surface 12a is formed at the center of the front surface of the reflector 10, and the mounting hole 11 is surrounded by the reflection surface 12a.
The reflection surfaces 13a and 13b are formed on the left and right sides of the reflection surface 12a, respectively. A reflective surface 14a is formed on the left side of the reflective surface 13a, and a reflective surface 14b is formed on the right side of the reflective surface 13b.
The reflecting surfaces 15a and 15b are formed above and below the reflecting surface 12a, respectively.
Reflecting surfaces 16a and 16b are formed on the left and right sides of the reflecting surface 15a, respectively. Reflective surfaces 16c and 16d are arranged on the left and right of the reflective surface 15b, respectively. A reflective surface 17a is formed on the left side of the reflective surface 16a, a reflective surface 17b is formed on the right side of the reflective surface 16b, a reflective surface 17c is formed on the left side of the reflective surface 16c, and a reflective surface 17d is formed on the right side of the reflective surface 16d. Has been. The reflecting surfaces 16a and 16c are above and below the reflecting surface 13a, the reflecting surfaces 16b and 16d are above and below the reflecting surface 13b, respectively, and the reflecting surfaces 17a and 17c are respectively above and below the reflecting surface 14b. .

反射面15a,15b,16a〜16d,17a〜17dの総面積は33.75cm2以上である。 The total area of the reflecting surfaces 15a, 15b, 16a to 16d, 17a to 17d is 33.75 cm 2 or more.

バルブ2によって発せられた光が反射面12a,13a,13b,14a,14b,15a,15b,16a〜16d,17a〜17dによって前方へ反射され、これにより車両の前方が照明される。   The light emitted by the bulb 2 is reflected forward by the reflecting surfaces 12a, 13a, 13b, 14a, 14b, 15a, 15b, 16a-16d, 17a-17d, thereby illuminating the front of the vehicle.

ここで、次のような条件を想定して(図2及び図3参照)、車両用前照灯1の配光が定められる。
(条件1) 道路を片側一車線の道路とし、通行区分を左側通行であり、車両を道路中央よりも左側の部分に配置する。
(条件2) 車線の幅員を3.5mとし、車両を走行車線の幅方向中央に配置する
(条件3) 歩道の幅員を1.0mとする。
(条件4) 歩行者を対向車線側の歩道の幅方向中央に配置する。その歩行者の顔の高さを1.0〜1.8mとする。
(条件5) 車両用前照灯1の設置高さを路面から0.75mとする。
(条件6) 2つの車両用前照灯1の間隔を1.4mとする。
Here, the light distribution of the vehicle headlamp 1 is determined assuming the following conditions (see FIGS. 2 and 3).
(Condition 1) The road is a one-lane road, the traffic classification is left-hand traffic, and the vehicle is placed on the left side of the center of the road.
(Condition 2) The width of the lane is 3.5 m, and the vehicle is arranged at the center in the width direction of the traveling lane (Condition 3) The width of the sidewalk is 1.0 m.
(Condition 4) A pedestrian is placed in the center of the opposite lane side in the width direction. The height of the pedestrian's face is set to 1.0 to 1.8 m.
(Condition 5) The installation height of the vehicle headlamp 1 is set to 0.75 m from the road surface.
(Condition 6) The distance between the two vehicular headlamps 1 is 1.4 m.

図4を参照して、上記条件1〜6における車両右前部の車両用前照灯1によって必要な光度について説明する。図4は、車両用前照灯1及びリフレクター10に正対する仮想スクリーンを示した図面である。図4において、原点Oは車両用前照灯1の光軸と仮想スクリーンの交点であり、H線は車両用前照灯1の光軸を通った水平面と仮想スクリーンとの交線であり、V線は車両用前照灯1の光軸を通った鉛直面と仮想スクリーンとの交線である。また、H線に沿った横軸は車両用前照灯1の光軸に対する光の照射方向の水平角を示し、V線に沿った縦軸は車両用前照灯1の光軸に対する光の照射方向の鉛直角を示す。   With reference to FIG. 4, the light intensity required by the vehicle headlamp 1 at the right front of the vehicle in the above conditions 1 to 6 will be described. FIG. 4 is a view showing a virtual screen directly facing the vehicle headlamp 1 and the reflector 10. In FIG. 4, the origin O is the intersection of the optical axis of the vehicle headlamp 1 and the virtual screen, and the H line is the intersection of the horizontal plane passing through the optical axis of the vehicle headlamp 1 and the virtual screen. The V line is an intersection line between the vertical plane passing through the optical axis of the vehicle headlamp 1 and the virtual screen. The horizontal axis along the H line indicates the horizontal angle of the light irradiation direction with respect to the optical axis of the vehicle headlamp 1, and the vertical axis along the V line indicates the light with respect to the optical axis of the vehicle headlamp 1. Indicates the vertical angle of the irradiation direction.

車両用前照灯1は以下の(1)〜(6)に記載のような光度の光を照射する。
(1) 光軸に沿って進行する光の光度が40500cdである。これは、車両用前照灯1が走行用ビームの前照灯としての規格を満たすために必要な光度である。
The vehicular headlamp 1 emits light having a luminous intensity as described in the following (1) to (6).
(1) The luminous intensity of light traveling along the optical axis is 40500 cd. This is the light intensity necessary for the vehicle headlamp 1 to satisfy the standard as a headlight for a traveling beam.

(2) 鉛直角がゼロ°で且つ水平角が右へ2.5°の方向へ照射される光の光度が20300cであり、鉛直角がゼロ°で且つ水平角が左へ2.5°の方向へ進行する光の光度が20300cdである。これは、車両用前照灯1が走行用ビームの前照灯としての規格を満たすために必要な光度である。 (2) The luminous intensity of the light irradiated in the direction where the vertical angle is zero ° and the horizontal angle is 2.5 ° to the right is 20300c, the vertical angle is zero ° and the horizontal angle is 2.5 ° to the left The intensity of light traveling in the direction is 20300 cd. This is the light intensity necessary for the vehicle headlamp 1 to satisfy the standard as a headlight for a traveling beam.

(3) 鉛直角がゼロ°で且つ水平角が右へ5°の方向へ照射される光の光度が5100cdであり、鉛直角がゼロ°で且つ水平角が左へ5°の方向へ進行する光の光度が5100cdである。これは、車両用前照灯1が走行用ビームの前照灯としての規格を満たすために必要な光度である。 (3) The luminous intensity of the light irradiated in the direction where the vertical angle is zero ° and the horizontal angle is 5 ° to the right is 5100 cd, and the vertical angle is zero ° and the horizontal angle advances to the left in the direction of 5 °. The luminous intensity of light is 5100 cd. This is the light intensity necessary for the vehicle headlamp 1 to satisfy the standard as a headlight for a traveling beam.

(4) 鉛直角が上へ0.3〜1.2°の範囲で且つ水平角が右へ3°の方向へ照射される光の光度が15000cd以上である。これは、車両から100m先の前方を狙って照明するために必要な光度である。車両から100m先の前方で3Lxの照度を得れば、車両のドライバーが100m先の前方にある物・人を視認することができ、そのような照度を得るために必要な光度が15000cdである。 (4) The luminous intensity of light irradiated in the direction in which the vertical angle is 0.3 to 1.2 ° upward and the horizontal angle is 3 ° to the right is 15000 cd or more. This is the light intensity necessary to illuminate the vehicle 100 meters ahead of the vehicle. If the illuminance of 3Lx is obtained 100 meters ahead of the vehicle, the driver of the vehicle can visually recognize objects and people in front of 100 meters, and the luminous intensity required to obtain such illuminance is 15000 cd. .

(5) 鉛直角が上へ0.15〜0.6°の範囲で且つ水平角が右へ6°の方向へ照射される光の光度が3750cd以上である。これは、車両から50m先の前方を狙って照明するために必要な光度である。車両から50m先の前方で3Lxの照度を得れば、車両のドライバーが50m先の前方にある物・人を視認することができ、そのような照度を得るために必要な光度が3750cdである。 (5) The luminous intensity of light irradiated in the direction in which the vertical angle is 0.15 to 0.6 ° upward and the horizontal angle is 6 ° to the right is 3750 cd or more. This is the light intensity necessary to illuminate the vehicle 50 meters ahead of the vehicle. If the illuminance of 3Lx is obtained 50 meters ahead of the vehicle, the driver of the vehicle can see objects and people ahead of the vehicle 50 meters ahead, and the light intensity necessary to obtain such illuminance is 3750 cd. .

(6) 鉛直角が上へ0.15〜1.2°の範囲で且つ水平角が右へ3〜6°の範囲へ照射される光の光度が3750〜15000cdであり、右への水平角が大きくなるにつれて光度が漸減する。これは、車両から50〜100m先の前方を狙って照明するために必要な光度である。車両から80m先の前方で3Lxの照度を得れば、車両のドライバーが80m先の前方にある物・人を視認することができ、そのような照度を得るために必要な光度が9600cdである。 (6) The luminous intensity of the light irradiated in the vertical angle range of 0.15 to 1.2 ° and the horizontal angle range of 3 to 6 ° to the right is 3750 to 15000 cd, and the horizontal angle to the right As the value increases, the light intensity gradually decreases. This is the light intensity necessary to illuminate the vehicle 50 to 100 meters ahead of the vehicle. If 3Lx illuminance is obtained 80 meters ahead of the vehicle, the driver of the vehicle can visually recognize objects and people ahead 80 meters away, and the luminous intensity required to obtain such illuminance is 9600 cd. .

図5を参照して、反射面12a,13a,13b,14a,14b,15a,15b,16a〜16d,17a〜17dによって反射される光の向き及び範囲について説明する。ここで、図5は、車両用前照灯1に正対する仮想スクリーンを示した図面である。   With reference to FIG. 5, the direction and range of light reflected by the reflecting surfaces 12a, 13a, 13b, 14a, 14b, 15a, 15b, 16a to 16d, and 17a to 17d will be described. Here, FIG. 5 is a drawing showing a virtual screen directly facing the vehicular headlamp 1.

反射面12aはバルブ2により発せられた光を車両用前照灯1の光軸の方向へ反射させ、仮想スクリーン上におけるその反射光の照射範囲は原点Oを中心とした領域Aである。
反射面13a,13bはバルブ2により発せられた光を車両用前照灯1の光軸の方向へ反射させ、仮想スクリーン上におけるその反射光の照射範囲は原点Oを中心とした領域Bである。領域Bの中心と領域Aの中心が原点Oで重なり、領域Aの方が領域Bよりも広い。
反射面14a,14bはバルブ2により発せられた光を車両用前照灯1の光軸の方向へ反射させ、仮想スクリーン上におけるその反射光の照射範囲は原点Oを中心とした領域Cである。領域Cの中心と領域Bの中心が原点Oで重なり、領域Bの方が領域Cよりも広い。
The reflecting surface 12a reflects the light emitted by the bulb 2 in the direction of the optical axis of the vehicle headlamp 1, and the irradiation range of the reflected light on the virtual screen is a region A centered on the origin O.
The reflecting surfaces 13a and 13b reflect the light emitted by the bulb 2 in the direction of the optical axis of the vehicle headlamp 1, and the irradiation range of the reflected light on the virtual screen is a region B centered on the origin O. . The center of region B and the center of region A overlap at origin O, and region A is wider than region B.
The reflecting surfaces 14a and 14b reflect the light emitted by the bulb 2 in the direction of the optical axis of the vehicle headlamp 1, and the irradiation range of the reflected light on the virtual screen is a region C centered on the origin O. . The center of region C and the center of region B overlap at origin O, and region B is wider than region C.

領域A,B,Cが重なり、リフレクター10の中央部の反射面12a,13a,13b,14a,14bによって反射された光が上述の(1)〜(3)に示すような光度を満たす。従って、反射面12a,13a,13b,14a,14bの反射光の配光が走行用ビーム(ハイビーム)の規格を満たす。そのため、車両の前方の遠くを照明することができ、車両のドライバーにとって前方の視認性が良い。   The regions A, B, and C overlap, and the light reflected by the reflection surfaces 12a, 13a, 13b, 14a, and 14b at the center of the reflector 10 satisfies the luminous intensity as shown in the above (1) to (3). Therefore, the light distribution of the reflected light from the reflecting surfaces 12a, 13a, 13b, 14a, and 14b satisfies the standard for a traveling beam (high beam). Therefore, it is possible to illuminate a far distance in front of the vehicle, and the front visibility is good for the driver of the vehicle.

反射面15a,15bは、バルブ2により発せられた光を領域Dに向けて反射させる。領域Dは、鉛直角が上へ0〜1.0°の範囲であって、水平角が右へ2.5〜6.0°の範囲である。反射面15a,15bの組み合わせによって反射された光の光度は625cd以下である。なお、反射面15a,15bによって反射された光がそれぞれ625cd以下であってもよい。   The reflecting surfaces 15a and 15b reflect the light emitted by the bulb 2 toward the region D. In the region D, the vertical angle is in the range of 0 to 1.0 ° upward, and the horizontal angle is in the range of 2.5 to 6.0 ° to the right. The luminous intensity of the light reflected by the combination of the reflecting surfaces 15a and 15b is 625 cd or less. The light reflected by the reflecting surfaces 15a and 15b may be 625 cd or less.

反射面16a,16b,16c,16dは、バルブ2により発せられた光を領域Eに向けて反射させる。領域Eは、鉛直角が上へ0〜1.5°の範囲であって、水平角が右へ2.5〜5.0°の範囲である。反射面16a,16b,16c,16dの組み合わせによって反射された光の光度は625cd以下である。反射面16a,16b,16c,16dによって反射された光がそれぞれ625cd以下であってもよい。   The reflecting surfaces 16a, 16b, 16c, and 16d reflect the light emitted by the bulb 2 toward the region E. In the region E, the vertical angle is in the range of 0 to 1.5 ° upward, and the horizontal angle is in the range of 2.5 to 5.0 ° to the right. The luminous intensity of the light reflected by the combination of the reflecting surfaces 16a, 16b, 16c, and 16d is 625 cd or less. The light reflected by the reflecting surfaces 16a, 16b, 16c, and 16d may be 625 cd or less.

反射面17a,17b,17c,17dは、バルブ2により発せられた光を領域Eに向けて反射させる。領域Fは、鉛直角が上へ0〜1.5°の範囲であって、水平角が右へ2.5〜3.5°の範囲である。反射面17a,17b,17c,17dの組み合わせによって反射された光の光度は625cd以下である。また、反射面17a,17b,17c,17dによって反射された光がそれぞれ625cd以下であってもよい。   The reflecting surfaces 17a, 17b, 17c, and 17d reflect the light emitted by the bulb 2 toward the region E. In the region F, the vertical angle is in the range of 0 to 1.5 ° upward, and the horizontal angle is in the range of 2.5 to 3.5 ° to the right. The luminous intensity of the light reflected by the combination of the reflecting surfaces 17a, 17b, 17c, and 17d is 625 cd or less. The light reflected by the reflecting surfaces 17a, 17b, 17c, and 17d may be 625 cd or less.

625cdの光度は対向車及び歩行者にグレアを与えない範囲での最大値であり、光の光度が625cdを超えると対向車及び歩行者にグレアを与える虞がある。   The luminous intensity of 625 cd is the maximum value in a range that does not give glare to oncoming vehicles and pedestrians, and if the luminous intensity of light exceeds 625 cd, there is a risk of giving glare to oncoming vehicles and pedestrians.

領域D,E,Fの明部が一部重なり合うことによって、上述の(4)〜(6)に示すような光度を満たす。そのため、車両のドライバーが対向車側の歩道にいる歩行者等を視認することができる。ここで、反射面15a,15b,16a〜16d,17a〜17dの総面積は33.75cm2以上であるから、車両から100m先の前方で3Lxの照度を得るために必要な輝度(反射面15a,15b,16a〜16d,17a〜17dの反射光の輝度)は4444444cd/m2であり、車両から80m先の前方で3Lxの照度を得るために必要な輝度(反射面15a,15b,16a〜16d,17a〜17dの反射光の輝度)は2844444cd/m2であり、車両から100m先の前方で3Lxの照度を得るために必要な輝度(反射面15a,15b,16a〜16d,17a〜17dの反射光の輝度)は1111111cd/m2である。このような面発光照明とすることによって、対向車側の歩道にいる歩行者等にとっては眩しさを感じにくい。 When the bright portions of the regions D, E, and F partially overlap, the light intensity as shown in the above (4) to (6) is satisfied. Therefore, the driver of the vehicle can visually recognize a pedestrian or the like on the sidewalk on the oncoming vehicle side. Here, since the total area of the reflecting surfaces 15a, 15b, 16a to 16d, and 17a to 17d is 33.75 cm 2 or more, the luminance (reflecting surface 15a) required to obtain an illuminance of 3Lx 100 m ahead of the vehicle. , 15b, 16a to 16d, 17a to 17d reflected light) is 4444444 cd / m 2 , and the brightness (reflecting surfaces 15a, 15b, 16a to 16a to obtain 3 Lx illuminance 80 meters ahead of the vehicle). The luminance of the reflected light of 16d, 17a to 17d is 28444444 cd / m 2 , and the luminance (reflecting surfaces 15a, 15b, 16a to 16d, 17a to 17d) required to obtain an illuminance of 3Lx 100 meters ahead of the vehicle. Of the reflected light) is 11111111 cd / m 2 . By using such a surface-emitting illumination, it is difficult for a pedestrian or the like on the sidewalk on the oncoming vehicle to feel dazzling.

一方、反射面15a,15bの反射光の光度、反射面16a,16b,16c,16dの反射光の光度、反射面17a,17b,17c,17dの反射光の光度が625cd以下であり、対向車側の歩道にいる歩行者等にとってはこれらの反射光が別々の方角から進行してきているように見えるので、歩行者等にとっては眩しさを感じにくい。これは、対向車のドライバーにとっても同様である。   On the other hand, the intensity of the reflected light from the reflecting surfaces 15a and 15b, the intensity of the reflected light from the reflecting surfaces 16a, 16b, 16c and 16d, and the intensity of the reflected light from the reflecting surfaces 17a, 17b, 17c and 17d are 625 cd or less. For the pedestrians and the like on the sidewalk on the side, these reflected lights appear to be traveling from different directions, so it is difficult for the pedestrians to feel dazzling. The same applies to the driver of the oncoming vehicle.

反射面15a,15bの間隔は可能な限り離れていることが好ましい。つまり、反射面15a,15bによって反射された光が同一の領域Dに照射され、これらの反射面15a,15bが離れているから、対向車側の歩道にいる歩行者或いは対向車のドライバー等にとっては面発光しているように見えるので、歩行者又は対向車のドライバー等にとっては眩しさを感じにくい。反射面16a,16b,16c,16dについても同様であり、反射面17a,17b,17c,17dについても同様である。   The spacing between the reflecting surfaces 15a and 15b is preferably as far as possible. That is, the light reflected by the reflecting surfaces 15a and 15b is irradiated to the same region D, and these reflecting surfaces 15a and 15b are separated from each other. Therefore, for pedestrians on the oncoming side or drivers of oncoming vehicles, etc. Appears to emit light, it is difficult for a pedestrian or an oncoming driver to feel dazzling. The same applies to the reflective surfaces 16a, 16b, 16c, and 16d, and the same applies to the reflective surfaces 17a, 17b, 17c, and 17d.

この車両用前照灯1のほかにすれ違い用前照灯も車両の前部に取り付けられ、すれ違い用前照灯と車両用前照灯1を同時に点灯してもよい。
また、車両のフロントのグリル部に面発光照明器を設け、この面発光照明器と車両用前照灯1を同時に点灯してもよい。面発光照明器を追加することによって全体の発光面積が増大するから、車両用前照灯1の輝度を下げることができ、歩行者又は対向車のドライバー等にとっては眩しさを感じにくい。
In addition to the vehicle headlamp 1, a passing headlamp may be attached to the front portion of the vehicle, and the passing headlamp and the vehicle headlamp 1 may be turned on simultaneously.
Further, a surface emitting illuminator may be provided on the front grill of the vehicle, and the surface emitting illuminator and the vehicle headlamp 1 may be turned on simultaneously. Since the entire light emitting area is increased by adding the surface light illuminator, the luminance of the vehicle headlamp 1 can be lowered, and it is difficult for a pedestrian or a driver of an oncoming vehicle to feel dazzling.

本発明は上記実施形態及び変形例に限定して解釈されるべきではなく、適宜変更・改良が可能であることはもちろんである。
例えば、車両用前照灯1が右側通行用の前照灯である場合、反射面15a,15bによって反射される光の照射範囲(領域D)は、鉛直角が上へ0〜1.0°の範囲であって、水平角が左へ2.5〜6.0°の範囲であり、反射面16a,16b,16c,16dによって反射される光の照射範囲(領域E)は、鉛直角が上へ0〜1.5°の範囲であって、水平角が左へ2.5〜5.0°の範囲であり、反射面17a,17b,17c,17dによって反射された光の照射範囲(領域F)は、鉛直角が上へ0〜1.5°の範囲であって、水平角が左へ2.5〜3.5°の範囲である。
The present invention should not be construed as being limited to the above-described embodiments and modifications, and of course can be modified or improved as appropriate.
For example, when the vehicular headlamp 1 is a right-handed headlamp, the vertical range of the light irradiation range (region D) reflected by the reflecting surfaces 15a and 15b is 0 to 1.0 °. The horizontal angle is in the range of 2.5 to 6.0 ° to the left, and the irradiation range (region E) of the light reflected by the reflecting surfaces 16a, 16b, 16c, and 16d has a vertical angle. The range of 0 to 1.5 ° upward, the horizontal angle of 2.5 to 5.0 ° to the left, and the irradiation range of light reflected by the reflecting surfaces 17a, 17b, 17c and 17d ( Region F) has a vertical angle in the range of 0 to 1.5 ° up and a horizontal angle in the range of 2.5 to 3.5 ° to the left.

1 車両用前照灯
2 バルブ(光源)
10 リフレクター
12a,13a,13b,14a,14b 反射面(走行用配光形成反射面)
15a,15b,16a〜16d,17a〜17d 反射面(対向車側照明反射面)
1 Vehicle headlamp 2 Bulb (light source)
10 reflector 12a, 13a, 13b, 14a, 14b reflective surface (light distribution forming reflective surface for traveling)
15a, 15b, 16a-16d, 17a-17d Reflecting surface (oncoming vehicle side lighting reflecting surface)

Claims (2)

前面が凹面状のリフレクターと、
前記リフレクターの前面側に設けられ、正面から見て前記リフレクターの中央部に配置された光源と、を備え、
前記リフレクターの前面の上下中央部には、複数の走行用配光形成反射面が形成され、前記リフレクターの前面であって前記走行用配光形成反射面の上側及び下側には、複数の対向車側照明反射面が形成され、
前記複数の走行用配光形成反射面が、前記光源により発せられた光を前方へ反射させて、前記リフレクターに正対する仮想スクリーンに走行用ビームとしての配光を形成し、
前記複数の対向車側照明反射面が、前記光源により発せられた光を、前記仮想スクリーンのうち前記光軸から対向車側にずれているとともに互いに一部重なり合った複数の領域に向けて反射させ、
前記複数の対向車側照明反射面によって反射される光の光度がそれぞれ625cd以下である、
ことを特徴とする車両用前照灯。
A reflector with a concave front,
A light source provided on the front side of the reflector and disposed at the center of the reflector as viewed from the front; and
A plurality of running light distribution forming reflecting surfaces are formed at the upper and lower central portions of the front surface of the reflector, and a plurality of facing light distribution forming reflecting surfaces on the front side of the reflector and above and below the running light distribution forming reflecting surface. A car-side lighting reflecting surface is formed,
The plurality of traveling light distribution forming reflecting surfaces reflect light emitted by the light source forward, and form a light distribution as a traveling beam on a virtual screen facing the reflector.
The plurality of oncoming vehicle side illumination reflecting surfaces reflect light emitted by the light source toward a plurality of regions of the virtual screen that are shifted from the optical axis toward the oncoming vehicle and partially overlap each other. ,
Intensities of light reflected by the plurality of oncoming vehicle side illumination reflecting surfaces are each 625 cd or less,
A vehicle headlamp characterized by that.
前記複数の対向車側照明反射面のうち、前記複数の領域のうち同一の領域に向けて反射させる対向車側照明反射面同士が互いに離れている、
ことを特徴とする請求項1に記載の車両用前照灯。
Of the plurality of oncoming vehicle-side illumination reflecting surfaces, the oncoming vehicle-side illumination reflecting surfaces that are reflected toward the same region among the plurality of regions are separated from each other.
The vehicle headlamp according to claim 1.
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