JP2010205607A - Headlamp unit for vehicle - Google Patents

Headlamp unit for vehicle Download PDF

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JP2010205607A
JP2010205607A JP2009050876A JP2009050876A JP2010205607A JP 2010205607 A JP2010205607 A JP 2010205607A JP 2009050876 A JP2009050876 A JP 2009050876A JP 2009050876 A JP2009050876 A JP 2009050876A JP 2010205607 A JP2010205607 A JP 2010205607A
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light
optical lens
headlamp unit
vehicle
vehicle headlamp
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JP5447782B2 (en
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Masanori Ono
雅典 大野
Ryutaro Owada
竜太郎 大和田
Norikatsu Myojin
紀勝 明神
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/322Optical layout thereof the reflector using total internal reflection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25Projection lenses
    • F21S41/26Elongated lenses

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headlamp unit for vehicle in which the visibility is improved by increasing the light use efficiency of a light source, and the structure is compact. <P>SOLUTION: In the headlamp unit for vehicle 10, a light guide 20 is formed around the periphery of an optical lens 14, then the light guide 20 reflects fowards the out-of-control light projected from the periphery of the optical lens 14. This can make the headlamp unit for vehicle 10 use the out-of-control light effectively, so that the light use efficiency of an LED light source 12 is improved. Further, a light-emitting surface at the time of lighting an optical surface 14C of the optical lens 14 plus the light guide 20, so that an area of the light emitting surface is increased. This improves the visibility for a walker and a driver of an oncoming vehicle, and improves the design properties. Furthermore, since the headlamp unit for vehicle 10 is composed that the light guide 20 is not arranged between the LED light source 12 and the optical lens 14 but arranged around the periphery of the optical lens 14, the length from front to back can be reduced. This makes the structure compact. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は車両用前照灯ユニットに係り、特に光源としてLED光源を使用したダイレクトプロジェクションタイプの車両用前照灯ユニットに関する。   The present invention relates to a vehicle headlamp unit, and more particularly to a direct projection type vehicle headlamp unit using an LED light source as a light source.

車両用前照灯ユニットは図6に示すように、光源1及び光学レンズ2を主たる構成とし、光源1からの光を光学レンズ2によって車両前方に照射し、光学レンズ2の光学面2Aから照射される光によって所望の配光パターンを得るようにしている。   As shown in FIG. 6, the vehicle headlamp unit mainly includes a light source 1 and an optical lens 2, and the light from the light source 1 is irradiated to the front of the vehicle by the optical lens 2 and irradiated from the optical surface 2 </ b> A of the optical lens 2. A desired light distribution pattern is obtained by the emitted light.

ところで光学レンズ2は、前面に形成された光学面2Aの他、光学面以外の面である周縁部2Bからも光が出射される。この光は配光に関与する光ではなく、グレア光となって対向車の運転手を幻惑させてしまう光となる場合がある。そのため従来は、光学レンズ2の周縁部2Bを遮光することによって、周縁部2Bから出る制御困難な光線をカットしている。しかしながら、この場合、光学レンズ2は光学面2Aのみしか露出しない制限されたものとなるため発光面が小さくなり、対向車の運転手及び歩行者に対する視認性が悪くなるという欠点があった。また、光源の光利用率も低下するという欠点もあった。   Incidentally, the optical lens 2 emits light from the peripheral surface 2B, which is a surface other than the optical surface, in addition to the optical surface 2A formed on the front surface. This light is not the light that is involved in the light distribution, but may be glare light that is obscuring the driver of the oncoming vehicle. Therefore, conventionally, by shielding the peripheral edge 2B of the optical lens 2, light beams that are difficult to control from the peripheral edge 2B are cut. However, in this case, since the optical lens 2 is limited so that only the optical surface 2A is exposed, there is a disadvantage that the light emitting surface becomes small and the visibility for the driver and pedestrian of the oncoming vehicle is deteriorated. In addition, the light utilization rate of the light source is also reduced.

また、配光に関与しないレンズの面の制御を行おうとした場合、レンズ内で複数回反射した後の光線を対象としなければならないため、制御が難しく、別部品に吸収させるしか方法が無かった。   Also, when trying to control the surface of a lens that is not involved in light distribution, it is difficult to control because the light after being reflected multiple times within the lens must be targeted, and there was only a way to absorb it in another part .

特許文献1には、光源の光利用率を高めて視認性を向上させた車両用前照灯ユニットが開示されている。この車両用前照灯ユニットは光源、凸レンズ、及び補助レンズユニット等を備えており、光源から光源の光軸方向に照射される光を、光源の光軸上に配置された凸レンズによって前方に照射することにより主配光を作り、かつ、光源から拡散照射される光を、光源と凸レンズとの間に配置された補助レンズユニットによって前方に照射することにより、光源の光利用率を高めて視認性を向上させている。   Patent Document 1 discloses a vehicle headlamp unit that improves the visibility by increasing the light utilization factor of a light source. The vehicle headlamp unit includes a light source, a convex lens, an auxiliary lens unit, and the like, and irradiates light emitted from the light source in the optical axis direction of the light source forward by a convex lens disposed on the optical axis of the light source. The main light distribution is made, and the light diffused from the light source is radiated forward by the auxiliary lens unit placed between the light source and the convex lens, thereby increasing the light utilization rate of the light source and viewing Improves sex.

特開2003−86009号公報JP 2003-86009 A

しかしながら、特許文献1の車両用前照灯ユニットは、光源と凸レンズとの間に補助レンズユニットの光入射面を配置しなければならないので、光源と凸レンズとの距離が長くなり、その分だけ車両用前照灯ユニットの奥行き方向の寸法が長くなる。よって、特許文献1では、車両用前照灯ユニットが大型になるという欠点があった。   However, since the vehicle headlamp unit of Patent Document 1 requires that the light incident surface of the auxiliary lens unit be disposed between the light source and the convex lens, the distance between the light source and the convex lens becomes longer, and the vehicle is accordingly increased. The length of the headlight unit for use in the depth direction becomes longer. Therefore, in patent document 1, there existed a fault that the vehicle headlamp unit became large.

本発明は、このような事情に鑑みてなされたものであり、光源の光利用率を高めて視認性を向上させるとともに、コンパクトな構造の車両用前照灯ユニットを提供することを目的とする。   The present invention has been made in view of such circumstances, and an object thereof is to provide a vehicle headlamp unit having a compact structure while improving the light utilization rate of a light source to improve visibility. .

本発明は、前記目的を達成するために、光源と光学レンズとを備え、光源からの直射光を光学レンズの光学面を介して前方に照射する車両用前照灯ユニットにおいて、前記光学レンズの周縁部から出射された光を前方に反射させる反射部材が、光学レンズの周囲の少なくとも一部に設けられていることを特徴とする車両用前照灯ユニットを提供する。   In order to achieve the above object, the present invention provides a vehicle headlamp unit that includes a light source and an optical lens, and irradiates the direct light from the light source forward through the optical surface of the optical lens. Provided is a vehicle headlamp unit characterized in that a reflecting member that reflects light emitted from a peripheral portion forward is provided at least at a part of the periphery of an optical lens.

本発明の車両用前照灯ユニットによれば、光学レンズの周囲に反射部材を設け、この反射部材によって、光学レンズの周縁部から出射された制御不能な光を前方に反射させる。これにより、本発明の車両用前照灯ユニットは、制御不能な光を有効利用できるので、光源の光利用率が向上する。また、点灯時の発光面も光学レンズの光学面に反射部材を加えたものとなるので、発光面の面積が大きくなり、これによって、対向車の運転手及び歩行者に対する車両の被視認性が向上するとともに、意匠性も向上する。更に、本発明の車両用前照灯ユニットは、反射部材を光源と光学レンズとの間に配置せず、光学レンズの周囲に配置した構成なので、奥行き方向の長さを抑えることができ、これによって、コンパクトな構造となる。   According to the vehicle headlamp unit of the present invention, the reflecting member is provided around the optical lens, and the uncontrollable light emitted from the peripheral portion of the optical lens is reflected forward by the reflecting member. Thereby, since the vehicle headlamp unit of the present invention can effectively use uncontrollable light, the light utilization rate of the light source is improved. In addition, since the light emitting surface at the time of lighting is also a reflection member added to the optical surface of the optical lens, the area of the light emitting surface is increased, which makes the vehicle visible to oncoming drivers and pedestrians. As well as improving design properties. Furthermore, the vehicle headlamp unit of the present invention has a configuration in which the reflecting member is not disposed between the light source and the optical lens, but is disposed around the optical lens, so that the length in the depth direction can be suppressed. By this, it becomes a compact structure.

また、本発明の車両用前照灯ユニットによれば、前記反射部材は導光体であり、該導光体の内面を利用して前記光を前方に反射させることが好ましい。   Moreover, according to the vehicle headlamp unit of the present invention, it is preferable that the reflecting member is a light guide, and the light is reflected forward using an inner surface of the light guide.

本発明によれば、光学レンズの周縁部から出射された制御不能な光を、導光体の内面で全反射させて前方に出射させる。これにより、アルミニウム蒸着によって構成される反射板と比較して光損失を抑えることができるので、光源の光利用率が向上する。   According to the present invention, the uncontrollable light emitted from the peripheral portion of the optical lens is totally reflected by the inner surface of the light guide and emitted forward. Thereby, since the optical loss can be suppressed as compared with a reflector configured by aluminum vapor deposition, the light utilization rate of the light source is improved.

以上説明したように本発明の車両用前照灯ユニットによれば、光源の光利用率が向上するとともに視認性も向上し、かつ、コンパクトな構造となる。   As described above, according to the vehicle headlamp unit of the present invention, the light utilization rate of the light source is improved, the visibility is improved, and the structure is compact.

実施の形態の車両用前照灯ユニットを正面側から見た斜視図The perspective view which looked at the headlight unit for vehicles of an embodiment from the front side 図1に示した車両用前照灯ユニットの縦断面図1 is a longitudinal sectional view of the vehicle headlamp unit shown in FIG. 図1に示した車両用前照灯ユニットの発光面を斜線部で示した説明図Explanatory drawing which showed the light emission surface of the vehicle headlamp unit shown in FIG. 従来の車両用前照灯ユニットの発光面を斜線部で示した説明図Explanatory drawing which showed the light emission surface of the conventional vehicle headlamp unit by the shaded part 反射部材として金属製のリフレクタを使用した車両用前照灯ユニットの縦断面図Vertical sectional view of a vehicle headlamp unit using a metal reflector as a reflecting member 従来の車両用前照灯ユニットの構成を示した縦断面図A longitudinal sectional view showing the configuration of a conventional vehicle headlamp unit

以下、添付図面に従って本発明に係る車両用前照灯ユニットの好ましい実施の形態について詳説する。   Hereinafter, preferred embodiments of a vehicle headlamp unit according to the present invention will be described in detail with reference to the accompanying drawings.

図1は、実施の形態の車両用前照灯ユニット10を正面側から見た斜視図である。   FIG. 1 is a perspective view of a vehicle headlamp unit 10 according to an embodiment as viewed from the front side.

この車両用前照灯ユニット10は、特にロービーム配光パターン(すれ違い配光パターン)を形成する灯具ユニットである。車両用前照灯は、実施の形態の車両用前照灯ユニット10を1台又は複数台並設することにより構成され、複数台並設した場合には、各々の車両用前照灯ユニット10、10…から照射される複数の光を合成してロービーム配光パターンを得るものである。また、この車両用前照灯ユニット10は、特にLED光源12と光学レンズ14を用いてLED光源12の直射光を光学レンズ14から照射する、いわゆるダイレクトプロジェクションタイプのものである。更に、LED光源12は、例えば1つ又は複数の白色の発光ダイオードが配置されたLEDパッケージである。更にまた、LED光源12の直近の前方側には、ロービーム配光パターンを形成するためのシェード(不図示)が配置されている。なお、同図においては、ハイビーム用車両用前照灯ユニット、ターンシグナル、ポジションランプ、アウターレンズ等の灯具部品は省略している。   The vehicle headlamp unit 10 is a lamp unit that forms a low beam light distribution pattern (passing light distribution pattern). The vehicle headlamp is configured by arranging one or a plurality of vehicle headlamp units 10 according to the embodiment. When a plurality of vehicle headlamp units 10 are arranged side by side, each of the vehicle headlamp units 10 is arranged. A low beam light distribution pattern is obtained by combining a plurality of lights irradiated from 10. The vehicle headlamp unit 10 is of a so-called direct projection type in which the LED light source 12 and the optical lens 14 are used to irradiate direct light from the LED light source 12 from the optical lens 14. Furthermore, the LED light source 12 is, for example, an LED package in which one or a plurality of white light emitting diodes are arranged. Furthermore, a shade (not shown) for forming a low-beam light distribution pattern is disposed on the front side closest to the LED light source 12. In the drawing, lamp components such as a high beam vehicle headlamp unit, a turn signal, a position lamp, and an outer lens are omitted.

実施の形態の車両用前照灯ユニット10は、光学レンズ14の光学面以外を露出することによって意匠性に優れ、かつ、光学面以外の周縁部から出る光線を有効に活用することによってLED光源12の光利用率を高め、また、前方への発光面の面積を大きくすることにより、対向車の運転手及び歩行者からの視認性を高めたものである。   The vehicle headlamp unit 10 according to the embodiment is excellent in design by exposing parts other than the optical surface of the optical lens 14, and effectively uses light rays emitted from the peripheral part other than the optical surface to produce an LED light source. By increasing the light utilization rate of 12 and increasing the area of the light emitting surface to the front, the visibility from the driver and pedestrian of the oncoming vehicle is improved.

車両用前照灯ユニット10は、LED光源12、光学レンズ14、レンズホルダー16、ヒートシンク18、及び導光体(反射部材)20から構成される。   The vehicle headlamp unit 10 includes an LED light source 12, an optical lens 14, a lens holder 16, a heat sink 18, and a light guide (reflecting member) 20.

LED光源12は、矩形状に構成されたヒートシンク18の前面中央部に固定され、このヒートシンク18の各隅部から前方に延設された4本の脚部22、22…からなるレンズホルダー16の前部に光学レンズ14が接着固定されている。光学レンズ14は凸レンズ状に構成されるとともに、上部及び下部がカットされた正面視横長の矩形状に構成されている。この光学レンズ14の焦点位置に、前述したシェードが配置されており、シェードのカットオフ形状が光学レンズ14を介して前方に投影されることによってロービーム配光パターンが形成される。   The LED light source 12 is fixed to a front central portion of a heat sink 18 configured in a rectangular shape, and a lens holder 16 including four leg portions 22, 22. The optical lens 14 is bonded and fixed to the front part. The optical lens 14 is configured in a convex lens shape, and is configured in a rectangular shape that is horizontally long when viewed from the front with the upper and lower portions cut off. The shade described above is arranged at the focal position of the optical lens 14, and the cut-off shape of the shade is projected forward through the optical lens 14 to form a low beam light distribution pattern.

光学レンズ14は、屈折により配光パターンを作るレンズが用いられているが、屈折だけでなく、反射膜による反射、全反射のいずれか、或いは全てによる制御を行う光学レンズを用いてもよい。   As the optical lens 14, a lens that forms a light distribution pattern by refraction is used. However, an optical lens that is controlled not only by refraction but also by reflection by a reflection film, total reflection, or all may be used.

本発明の反射部材の一例である導光体20は図2の如く、光学レンズ14の周縁部、特に光学レンズ14の上下の平坦面14A、14Bから出射された光を前方に反射させるように、光学レンズ14の周囲に設けられている。この導光体20は、正面視矩形の枠状に形成されるとともに、縦断面が図2の如く略三角形状に形成され、その傾斜面20Aが外周部に配置されている。光学レンズ14の周縁部から出射された制御不能な光線は、図2の矢印で示すように導光体20の水平面である入射面20Bから導光体20内に入射し、導光体20の傾斜面20Aによって全反射されて、導光体20の垂直面である出射面20Cから前方に照射される。   As shown in FIG. 2, the light guide 20 which is an example of the reflecting member of the present invention reflects light emitted from the peripheral portion of the optical lens 14, particularly from the upper and lower flat surfaces 14 </ b> A and 14 </ b> B of the optical lens 14 to the front. Are provided around the optical lens 14. The light guide 20 is formed in a rectangular frame shape when viewed from the front, the longitudinal section thereof is formed in a substantially triangular shape as shown in FIG. 2, and the inclined surface 20A is disposed on the outer peripheral portion. The uncontrollable light emitted from the peripheral edge of the optical lens 14 enters the light guide 20 from the incident surface 20B, which is the horizontal surface of the light guide 20, as indicated by the arrows in FIG. The light is totally reflected by the inclined surface 20 </ b> A and irradiated forward from the light exit surface 20 </ b> C, which is a vertical surface of the light guide 20.

このように、車両用前照灯ユニット10によれば、光学レンズ14の周囲に導光体20を設け、導光体20によって、光学レンズ14の周縁部(特に光学レンズ14の上下の平坦面14A、14B)から出射された制御不能な光を前方に反射させる。これにより、車両用前照灯ユニット10によれば、LED光源12の光利用率が向上する。   As described above, according to the vehicle headlamp unit 10, the light guide 20 is provided around the optical lens 14, and the light guide 20 allows the periphery of the optical lens 14 (particularly the upper and lower flat surfaces of the optical lens 14 to be formed). 14A, 14B) reflects the uncontrollable light emitted from the front. Thereby, according to the vehicle headlamp unit 10, the light utilization rate of the LED light source 12 is improved.

また、図3の斜線部で示すように、点灯時の発光面も光学レンズ14の光学面14Cに導光体20を加えたものとなるので、図4に示す光学レンズ14の光学面14Cのみを発光させる従来の車両用前照灯ユニットと比較して、発光面の面積が大きくなる。これによって、実施の形態の車両用前照灯ユニット10によれば、発光面の面積が増加した分、対向車の運転手及び歩行者に対する視認性が向上するとともに、歩行者は発光面の面積の大きな前照灯ほど夜間点灯時に近くにいるように感じられるため、道路横断中など早く対処することができ、安全性が向上する。また、見栄えによる意匠性も向上する。   Further, as indicated by the hatched portion in FIG. 3, since the light emitting surface at the time of lighting is also the optical surface 14C of the optical lens 14 with the light guide 20 added thereto, only the optical surface 14C of the optical lens 14 shown in FIG. Compared with the conventional vehicle headlamp unit that emits light, the area of the light emitting surface is increased. Thus, according to the vehicle headlamp unit 10 of the embodiment, the visibility of the driver and the pedestrian of the oncoming vehicle is improved by the increase in the area of the light emitting surface, and the area of the light emitting surface is increased by the pedestrian. The larger the headlight, the closer it feels when it is lit at night, it can be dealt with quickly, such as while crossing the road, improving safety. In addition, the design by appearance is improved.

更に、この車両用前照灯ユニット10は、導光体20をLED光源12と光学レンズ14との間に配置せず、光学レンズ14の周囲に配置した構成なので、車両用前照灯ユニット10の奥行き方向の長さを抑えることができ、これによって、車両用前照灯ユニット10はコンパクトな構造となる。   Further, the vehicle headlamp unit 10 has a configuration in which the light guide 20 is not disposed between the LED light source 12 and the optical lens 14 but is disposed around the optical lens 14. Thus, the vehicle headlamp unit 10 has a compact structure.

なお、導光体20は反射、全反射、屈折、乱反射のいずれか、或いはこのうち複数の特性を用いて、光学レンズ14の上下方向から出射された光を車両前方に向けて拡散させて出射するものであればよい。導光体20を配置しない場合、光学レンズ14の上下の平坦面14A、14Bからの光は、車両前方正面に意図して配光制御した光学レンズ14の光学面14Cからの配光とは異なっており、対向車の運転手にとって視認性向上に寄与しない光となる。導光体20を配置したことにより、光学レンズ14の上下の平坦面14A、14Bからの光は、車両前方正面に拡散出射することが可能となり、対向車の運転手を幻惑するおそれが無くなるだけではなく、対向車の運転手の視認性向上に寄与することができる。   The light guide 20 emits light emitted from the vertical direction of the optical lens 14 toward the front of the vehicle using any one of reflection, total reflection, refraction, and irregular reflection, or a plurality of these characteristics. Anything to do. When the light guide 20 is not disposed, the light from the upper and lower flat surfaces 14A and 14B of the optical lens 14 is different from the light distribution from the optical surface 14C of the optical lens 14 that is intentionally distributed in front of the vehicle. Therefore, the light does not contribute to the improvement of visibility for the driver of the oncoming vehicle. By arranging the light guide 20, the light from the upper and lower flat surfaces 14A, 14B of the optical lens 14 can be diffused and emitted to the front front of the vehicle, and there is no possibility of being dazzled by the driver of the oncoming vehicle. Instead, it can contribute to improving the visibility of the driver of the oncoming vehicle.

図5には、導光体20に代えて金属製のリフレクタ24を、本発明の反射部材として用いた車両用前照灯ユニット26の縦断面図が示されている。このリフレクタ24は、金属製又はプラスチック製の基材にアルミニウムを蒸着することによって反射面24Aが形成されている。   FIG. 5 shows a longitudinal sectional view of a vehicle headlamp unit 26 in which a metal reflector 24 is used in place of the light guide 20 as a reflecting member of the present invention. The reflector 24 has a reflecting surface 24A formed by vapor-depositing aluminum on a metal or plastic base material.

この車両用前照灯ユニット26によれば、光学レンズ14の周縁部から出射された制御不能な光線を反射面24Aによって前方に反射することができる。これによって、得られる効果は、導光体20を設けた車両用前照灯ユニット10と同様である。   According to the vehicle headlamp unit 26, the uncontrollable light emitted from the peripheral edge of the optical lens 14 can be reflected forward by the reflecting surface 24A. Thus, the obtained effect is the same as that of the vehicle headlamp unit 10 provided with the light guide 20.

なお、反射部材としてリフレクタ24を適用してもよいが、反射による光損失を考慮した場合には、導光体20の方が好適であり、導光体20を適用することによってLED光源12の光利用率を高めることができる。   The reflector 24 may be applied as the reflecting member. However, when light loss due to reflection is taken into consideration, the light guide 20 is preferable, and by applying the light guide 20, the LED light source 12 can be used. Light utilization can be increased.

一方で、車両用信号灯具を複数の車両用前照灯ユニット10、10…を用いて構成する場合、発光部が大きくなり車両用前照灯ユニット10、10間の距離を短くすることができる。これにより、一体感のあるレイアウトの実現、シングルランプ要件を容易に実現できる。   On the other hand, when the vehicular signal lamp is configured using a plurality of vehicular headlamp units 10, 10..., The light emitting portion is increased and the distance between the vehicular headlamp units 10, 10 can be shortened. . As a result, it is possible to easily realize a layout with a sense of unity and a single lamp requirement.

実施の形態では、導光体20又はリフレクタ24によって光学レンズ14の周囲全体を覆った例を説明したが、本発明はこれに限定されない。すなわち、本発明の反射部材は、導光体20又はリフレクタ24を光学レンズ14の全周囲ではなく、上下だけ、左右だけなど、光学レンズの周囲の一部に設けられていればよい。   In the embodiment, the example in which the entire periphery of the optical lens 14 is covered with the light guide 20 or the reflector 24 has been described, but the present invention is not limited to this. That is, the reflecting member of the present invention may be provided with the light guide 20 or the reflector 24 not on the entire periphery of the optical lens 14 but on a part of the periphery of the optical lens, such as only on the top and bottom and only on the left and right.

また、実施の形態において、導光体20又はリフレクタ24は、例えば図2、図5のように光学レンズ14と間隔をおいて設けられているが、本発明はこれに限定されない。つまり、本発明において、光学レンズ14と反射部材とが接するように設けられていても、所定の間隔をもって設けられていてもどちらでもよい。   In the embodiment, the light guide 20 or the reflector 24 is provided at a distance from the optical lens 14 as shown in FIGS. 2 and 5, for example, but the present invention is not limited to this. That is, in the present invention, the optical lens 14 and the reflecting member may be provided so as to contact each other, or may be provided with a predetermined interval.

上述した実施の形態においては、ロービーム配光パターンを作る車両用前照灯ユニットについて説明したが、ハイビーム配光を作る車両用前照灯ユニット、又は車両用信号灯具に本発明の車両用前照灯ユニットを適用することもできる。   In the embodiment described above, the vehicle headlamp unit for creating the low beam light distribution pattern has been described. However, the vehicle headlamp unit for creating the high beam light distribution or the vehicle signal lamp according to the present invention may be used as a vehicle headlamp unit. A light unit can also be applied.

10…車両用前照灯ユニット、12…LED光源、14…光学レンズ、16…レンズホルダー、18…ヒートシンク、20…導光体、20A…反射面、20B…入射面、20C…出射面、22…脚部、24…リフレクタ、26…車両用前照灯ユニット   DESCRIPTION OF SYMBOLS 10 ... Vehicle headlamp unit, 12 ... LED light source, 14 ... Optical lens, 16 ... Lens holder, 18 ... Heat sink, 20 ... Light guide, 20A ... Reflecting surface, 20B ... Incident surface, 20C ... Output surface, 22 ... Leg part, 24 ... Reflector, 26 ... Vehicle headlamp unit

Claims (2)

光源と光学レンズとを備え、光源からの直射光を光学レンズの光学面を介して前方に照射する車両用前照灯ユニットにおいて、
前記光学レンズの周縁部から出射された光を前方に反射させる反射部材が、光学レンズの周囲の少なくとも一部に設けられていることを特徴とする車両用前照灯ユニット。
In a vehicle headlamp unit that includes a light source and an optical lens, and irradiates the direct light from the light source forward through the optical surface of the optical lens.
A vehicular headlamp unit, characterized in that a reflecting member that reflects light emitted from the peripheral edge of the optical lens forward is provided at least at a part of the periphery of the optical lens.
前記反射部材は導光体であり、該導光体の内面を利用して前記光を前方に反射させる請求項1に記載の車両用前照灯ユニット。   The vehicle headlamp unit according to claim 1, wherein the reflecting member is a light guide, and the light is reflected forward using an inner surface of the light guide.
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JP2015204228A (en) * 2014-04-15 2015-11-16 スタンレー電気株式会社 Vehicular lighting tool and lens body
JP2016058347A (en) * 2014-09-12 2016-04-21 株式会社小糸製作所 Lamp unit
WO2017122630A1 (en) * 2016-01-13 2017-07-20 三菱電機株式会社 Headlight module and headlight device
WO2017122629A1 (en) * 2016-01-13 2017-07-20 三菱電機株式会社 Headlight module and headlight device
JP2019204603A (en) * 2018-05-21 2019-11-28 スタンレー電気株式会社 Vehicular lighting fixture

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130136742A (en) * 2012-06-05 2013-12-13 현대모비스 주식회사 Vehicle lamp
JP2015204228A (en) * 2014-04-15 2015-11-16 スタンレー電気株式会社 Vehicular lighting tool and lens body
JP2016058347A (en) * 2014-09-12 2016-04-21 株式会社小糸製作所 Lamp unit
WO2017122630A1 (en) * 2016-01-13 2017-07-20 三菱電機株式会社 Headlight module and headlight device
WO2017122629A1 (en) * 2016-01-13 2017-07-20 三菱電機株式会社 Headlight module and headlight device
JPWO2017122629A1 (en) * 2016-01-13 2018-01-18 三菱電機株式会社 Headlight module and headlight device
CN108474537A (en) * 2016-01-13 2018-08-31 三菱电机株式会社 Headlamp module and front lamp device
US10495277B2 (en) 2016-01-13 2019-12-03 Mitsubishi Electric Corporation Headlight module with two light guides receiving light from two light sources
CN108474537B (en) * 2016-01-13 2020-10-02 三菱电机株式会社 Headlamp module and headlamp device
JP2019204603A (en) * 2018-05-21 2019-11-28 スタンレー電気株式会社 Vehicular lighting fixture
JP7139147B2 (en) 2018-05-21 2022-09-20 スタンレー電気株式会社 vehicle lamp

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