JP5193546B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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JP5193546B2
JP5193546B2 JP2007256880A JP2007256880A JP5193546B2 JP 5193546 B2 JP5193546 B2 JP 5193546B2 JP 2007256880 A JP2007256880 A JP 2007256880A JP 2007256880 A JP2007256880 A JP 2007256880A JP 5193546 B2 JP5193546 B2 JP 5193546B2
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light source
optical axis
led light
projection lens
source device
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JP2009087785A (en
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竜太郎 大和田
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、ＬＥＤ（発光ダイオード）光源を使用した前照灯（ヘッドライト）、補助前照灯（フォグライト）など、車両用灯具に関するものであり、詳細には、ＬＥＤ光源の光軸調整機能を備えた車両用灯具の構成にかかるものである。   The present invention relates to a vehicular lamp such as a headlight (headlight) using an LED (light emitting diode) light source, an auxiliary headlight (fog light), and more specifically, an optical axis adjustment function of an LED light source. According to the configuration of the vehicular lamp including the above.

近年、ＬＥＤ光源を使用した車両用灯具として、ＬＥＤ光源の反射光を利用するためのリフレクタを具備しない光学構造が用いられることがある。その光学構造の例として、ＬＥＤ光源からの光を投影する投影レンズを介してＬＥＤ光源の直接光を利用する。このため、これらの光学構造は、ダイレクトプロジェクションタイプの灯具として知られている。   In recent years, an optical structure that does not include a reflector for using reflected light of an LED light source may be used as a vehicular lamp using an LED light source. As an example of the optical structure, the direct light of the LED light source is used through a projection lens that projects light from the LED light source. For this reason, these optical structures are known as direct projection type lamps.

ダイレクトプロジェクションタイプの灯具は、ＬＥＤ光源の反射光を利用しないため、反射光を利用するプロジェクションタイプよりも光源の光取り出し効率が高いとされている。このため、ダイレクトプロジェクションタイプの光学構造は、ＬＥＤ光源を使用した車両用灯具にしばしば利用される。   Since the direct projection type lamp does not use the reflected light of the LED light source, it is said that the light extraction efficiency of the light source is higher than the projection type using the reflected light. For this reason, the direct projection type optical structure is often used for a vehicular lamp using an LED light source.

特許文献１には、ダイレクトプロジェクションタイプのＬＥＤ光源と車両用灯具が開示されている。図３はＬＥＤ光源９３ａであり、内部には図示されているような遮光部材が設けられている。図４は、このＬＥＤ光源９３ａと投影レンズ９１の構成によるダイレクトプロジェクションタイプの車両用灯具９０の基本概念図であり、図５にそのすれ違い配光の例が開示されている。   Patent Document 1 discloses a direct projection type LED light source and a vehicle lamp. FIG. 3 shows an LED light source 93a, which is provided with a light shielding member as shown. FIG. 4 is a basic conceptual diagram of a direct projection type vehicular lamp 90 having the configuration of the LED light source 93a and the projection lens 91, and FIG. 5 discloses an example of the passing light distribution.

図５に示す部分において、中心線Vから右半分は対向車の運転者に対して幻惑を生じさせないように、上向き光を一切含まない配光となっている。また、左半分は、路側帯にある標識などの読み取りを容易にするために、エルボラインと言われる左上がり１５°に上向き光を含む配光となっている。   In the portion shown in FIG. 5, the right half from the center line V has a light distribution that does not include any upward light so as not to cause illusion to the driver of the oncoming vehicle. Further, the left half has a light distribution including upward light at 15 ° to the left, which is called an elbow line, in order to facilitate reading of signs and the like on the roadside belt.

図３のＬＥＤ光源９３aの内部に図示されている遮光部材は、図５に示すエルボラインを含むカットラインHLを形成するためのものである。したがって、図４の基本概念図に示す構成によりダイレクトプロジェクションタイプの車両用灯具９０が実現する。   The light shielding member illustrated inside the LED light source 93a of FIG. 3 is for forming the cut line HL including the elbow line shown in FIG. Therefore, the direct projection type vehicular lamp 90 is realized by the configuration shown in the basic conceptual diagram of FIG.

図４に示した１個のＬＥＤ光源９３aでは、照度が不足する場合がある。このため、複数のＬＥＤ光源９３aと投影レンズ９１による構成により、規格を満たす配光を得ることができる。図６に示す基本概念図は、図３のＬＥＤ光源９３aを３個とそれぞれの投影レンズ９１a、９１b、９１cで構成したダイレクトプロジェクションタイプの車両用灯具である。   The single LED light source 93a shown in FIG. 4 may have insufficient illuminance. For this reason, the light distribution satisfying the standard can be obtained by the configuration of the plurality of LED light sources 93a and the projection lens 91. The basic conceptual diagram shown in FIG. 6 is a direct projection type vehicular lamp including three LED light sources 93a shown in FIG. 3 and respective projection lenses 91a, 91b, 91c.

図７は、図６に示した光学構造による配光の一例を示す。
ＬＥＤ光源３aと投影レンズ１aで配光Haを形成している。同様に、ＬＥＤ光源３aと投影レンズ１bで配光、ＬＥＤ光源３aと投影レンズ１cで配光Hｃを形成し、図５に相当する配光HBｓを構成する。このように、複数のＬＥＤ光源と投影レンズを組み合わせることにより、規定を満足する配光を形成できる。 FIG. 7 shows an example of light distribution by the optical structure shown in FIG.
The LED light source 3a and the projection lens 1a form a light distribution Ha. Similarly, the LED light source 3a and the projection lens 1b form a light distribution, and the LED light source 3a and the projection lens 1c form a light distribution Hc to form a light distribution HBs corresponding to FIG. Thus, by combining a plurality of LED light sources and a projection lens, a light distribution satisfying the regulations can be formed.

ところで、図５又は図７に示した配光は、車両に灯具を装着すれば得られるとは限らない。灯具の生産時に、車両に望まれる配光になるようにＬＥＤ光源９３又は投影レンズ９１の光軸を調整する。更には、車両に装着した段階で、必要があれば再び光軸を調整することになる。このため、車両用灯具には生産時においてのみならず、車両に搭載された場合にも容易に光軸を調整する機能が設けられている。 By the way, the light distribution shown in FIG. 5 or FIG. 7 is not always obtained if a lamp is mounted on the vehicle. During the production of the lamp, the optical axis of the LED light source 93 or the projection lens 91 is adjusted so that the light distribution desired by the vehicle is obtained. Furthermore, the optical axis is adjusted again if necessary at the stage of mounting on the vehicle. For this reason, the vehicular lamp is provided with a function of easily adjusting the optical axis not only during production but also when mounted on a vehicle.

図８は、光源がハロゲンランプやHIDバーナーを使用した従来の車両用灯具に普及している光軸調整機能を示している。投影レンズホルダー１２は、投影レンズ９１を固定して、ブラケット９７に固定されている。ＬＥＤ光源９３aを含む光源装置９３は、投影レンズホルダー９２又はブラケット９７に固定されている。投影レンズホルダー９２とブラケット９７は、固定ネジ９４と上下光軸調整ネジ９５と左右光軸調整ネジ９６で固定されている。 FIG. 8 shows an optical axis adjustment function that is widely used in conventional vehicular lamps that use halogen lamps or HID burners as light sources. The projection lens holder 12 fixes the projection lens 91 and is fixed to the bracket 97. The light source device 93 including the LED light source 93 a is fixed to the projection lens holder 92 or the bracket 97. The projection lens holder 92 and the bracket 97 are fixed by a fixing screw 94, a vertical optical axis adjusting screw 95, and a left and right optical axis adjusting screw 96.

図５又は図７に示した配光に調整する際、その配光を上下に調整する場合には上下光軸調整ネジ９５により、固定ネジ９７を支点とした回転動作により調整される。同様に左右の配光を調整する場合には、左右光軸調整ネジ９６により固定ネジ９７を支点として回転動作により調整される。   When adjusting the light distribution shown in FIG. 5 or 7, when adjusting the light distribution vertically, the light distribution is adjusted by the vertical optical axis adjusting screw 95 by a rotating operation using the fixing screw 97 as a fulcrum. Similarly, when adjusting the left and right light distribution, the left and right optical axis adjusting screws 96 are adjusted by a rotating operation with the fixing screw 97 as a fulcrum.

その際、ハロゲンランプやHIDバーナーのように指向性の広い光源を使用する場合には、図８に示す回転動作による光軸調整で容易に調整可能である。しかしながら、ＬＥＤ光源９３aのような指向性の狭い光源では、僅かな回転動作で大きく配光が変化するため、図８に示す回転動作による光軸調整では調整が困難という課題をかかえていた。   At that time, when a light source having a wide directivity such as a halogen lamp or an HID burner is used, the light axis can be easily adjusted by adjusting the optical axis by the rotation operation shown in FIG. However, a light source with narrow directivity such as the LED light source 93a has a problem that adjustment is difficult by optical axis adjustment by the rotation operation shown in FIG.

更には、投影レンズホルダー９２自体が光軸調整により移動するため、図６に示したような複数のＬＥＤ光源９３aと投影レンズ９１を使用する車両用灯具においては、それぞれのＬＥＤ光源９３aと投影レンズ９１は狭い間隔では配置できないという課題も生じている。
特開２００５−５１９３ Further, since the projection lens holder 92 itself moves by adjusting the optical axis, in the vehicular lamp using the plurality of LED light sources 93a and the projection lens 91 as shown in FIG. 6, the respective LED light sources 93a and projection lenses are used. There is also a problem that 91 cannot be arranged at a narrow interval.
JP2005-5193

上述したように、ＬＥＤ光源９３aを使用した車両用灯具において、従来の光軸調整機構では正確な配光調整が難しく、生産時及び車両搭載時の光軸調整に時間を要していた。   As described above, in the vehicular lamp using the LED light source 93a, accurate light distribution adjustment is difficult with the conventional optical axis adjustment mechanism, and it takes time to adjust the optical axis at the time of production and mounting on the vehicle.

また、複数のＬＥＤ光源９３aと投影レンズ９１を使用する灯具では、投影レンズホルダー９２自体が移動するため、狭い間隔で複数の灯具を配置できない。したがって、車両用灯具全体の光学構造や外観デザインにも制約があった。   Further, in the lamp using the plurality of LED light sources 93a and the projection lens 91, since the projection lens holder 92 itself moves, the plurality of lamps cannot be arranged at a narrow interval. Therefore, there are restrictions on the optical structure and appearance design of the entire vehicle lamp.

本発明は、以上の観点から正確な配光調整を容易にする。また、複数のＬＥＤ光源９３aを使用する灯具においても、その光学構造や外観デザインの設計の制約を払拭することを目的としている。   The present invention facilitates accurate light distribution adjustment from the above viewpoint. The purpose of the lamp that uses a plurality of LED light sources 93a is to eliminate restrictions on the design of the optical structure and appearance design.

上記課題は、ＬＥＤ光源と、このＬＥＤ光源からの光を投影する投影レンズと、この投影レンズを固定するレンズホルダーから構成される車両用灯具であって、前記ＬＥＤ光源は前記投影レンズの光軸に対して略垂直に、互いに略直角な２軸の光軸調整機能を有する構成により、解決される。   The subject is a vehicular lamp that includes an LED light source, a projection lens that projects light from the LED light source, and a lens holder that fixes the projection lens, and the LED light source is an optical axis of the projection lens. This is solved by a configuration having two axis optical axis adjustment functions substantially perpendicular to each other and substantially perpendicular to each other.

前記ＬＥＤ光源は、前記投影レンズにより照射方向に拡大投影されて明暗境界線が得られる遮光部材を含んでもよい。また、前記ＬＥＤ光源の光軸調整機能の１軸は、前記ＬＥＤ光源を含む光源装置と、この光源装置を固定する光源台座を介して行われ、他の１軸は前記光源台座と前記レンズホルダーを介して行ってもよい。   The LED light source may include a light shielding member that is enlarged and projected in the irradiation direction by the projection lens to obtain a light / dark boundary line. One axis of the optical axis adjustment function of the LED light source is performed via a light source device including the LED light source and a light source base that fixes the light source device, and the other one axis is the light source base and the lens holder. You may go through.

更に、複数のＬＥＤ光源と、これらのＬＥＤ光源からの光を投影する複数の投影レンズと、これらの複数の投影レンズを固定する少なくとも一つのレンズホルダーから構成される車両用灯具であって、前記複数のＬＥＤ光源の少なくとも一つは前記当該投影レンズの光軸に対して略垂直に、互いに略直角な２軸の光軸調整機能を有する構成でもよい。   Furthermore, the vehicle lamp comprising a plurality of LED light sources, a plurality of projection lenses that project light from these LED light sources, and at least one lens holder that fixes the plurality of projection lenses, At least one of the plurality of LED light sources may have a biaxial optical axis adjustment function that is substantially perpendicular to the optical axis of the projection lens and substantially perpendicular to each other.

上記複数のＬＥＤ光源の少なくとも一つは、前記当該投影レンズにより照射方向に拡大投影されて明暗境界線が得られる遮光部材を含んでもよい。また、前記光軸調整機能を有するＬＥＤ光源の光軸調整機能の１軸は、前記ＬＥＤ光源を含む光源装置と、この光源装置を固定する光源台座を介して行われ、他の１軸は前記光源台座と前記レンズホルダーを介して行ってもよい。   At least one of the plurality of LED light sources may include a light shielding member that is enlarged and projected in the irradiation direction by the projection lens to obtain a light / dark boundary line. One axis of the optical axis adjustment function of the LED light source having the optical axis adjustment function is performed through a light source device including the LED light source and a light source base that fixes the light source device, and the other one axis is the above-described one axis. You may carry out through a light source base and the said lens holder.

本発明の構成により、正確に所望の配光に調整可能にする効果がある。また、光軸調整が容易となり、灯具の生産時や車両への搭載時の配光調整時間を少なくする効果も兼備えている。   With the configuration of the present invention, there is an effect that the light distribution can be accurately adjusted to a desired light distribution. In addition, the optical axis can be easily adjusted, and the light distribution adjustment time can be reduced when the lamp is produced or mounted on the vehicle.

また、上下左右の２軸による二つの平行動作による光軸調整のため、従来の回転動作の光軸調整と比較して調整機能部分の奥行きの薄さを実現できる。   In addition, since the optical axis is adjusted by two parallel movements of the upper, lower, left, and right axes, the depth of the adjustment function portion can be reduced compared with the optical axis adjustment of the conventional rotational movement.

更には、複数のＬＥＤ光源と投影レンズによる灯具を複数組み合わせた車両用灯具において、従来の回転動作の光軸調整機能ではそれぞれのレンズホルダー自体が移動する。このため、それぞれのレンズホルダーは光軸調整による移動する範囲より狭い間隔では配置できない。また、ＬＥＤ光源と投影レンズ毎に投影レンズホルダーを必要とする。   Further, in a vehicular lamp in which a plurality of lamps using a plurality of LED light sources and projection lenses are combined, the lens holders themselves move in the conventional optical axis adjustment function of the rotating operation. For this reason, the lens holders cannot be arranged at an interval narrower than the moving range by adjusting the optical axis. In addition, a projection lens holder is required for each LED light source and projection lens.

本発明の構成によると、レンズホルダーを移動させることなくＬＥＤ光源を2軸で平行移動により光軸を調整する。このため、複数の灯具間の間隔を狭くできる。また、複数のＬＥＤ光源と投影レンズを使用しても、従来例のように同数の投影レンズホルダーを必要としない。一つの投影レンズホルダーでも構成可能である。   According to the configuration of the present invention, the optical axis is adjusted by translating the LED light source in two axes without moving the lens holder. For this reason, the space | interval between several lamps can be narrowed. Even if a plurality of LED light sources and projection lenses are used, the same number of projection lens holders as in the conventional example is not required. A single projection lens holder can also be configured.

したがって、構成部品と製造工数の削減を実現しながら、車両用灯具の全体の光学設計の自由度や外観デザインの自由度が広がる。このため、本発明の構成によれば、車両の機種や外観に合わせて、さまざまな形状で配光特性の良好な車両用灯具を提供できる。   Therefore, the degree of freedom in the overall optical design and appearance design of the vehicular lamp can be expanded while realizing reduction in the number of components and manufacturing steps. For this reason, according to the configuration of the present invention, it is possible to provide a vehicular lamp having various shapes and good light distribution characteristics according to the model and appearance of the vehicle.

以下、図を参照しながら本発明の代表的な実施形態を説明する。   Hereinafter, representative embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の代表的な実施形態を示す構成図である。図２は図１の光軸調整機能部分の断面図であり、その中の図２(A)は左右方向の光軸調整機能の断面図であり、図２(B)は上下方向の光軸調整機能を示す断面図である。   FIG. 1 is a block diagram showing a typical embodiment of the present invention. 2 is a cross-sectional view of the optical axis adjustment function portion of FIG. 1, in which FIG. 2 (A) is a cross-sectional view of the optical axis adjustment function in the horizontal direction, and FIG. 2 (B) is the optical axis in the vertical direction. It is sectional drawing which shows an adjustment function.

図１において、投影レンズ１は投影レンズホルダー２に固定されている。ＬＥＤ光源３aは、図３に示す従来のＬＥＤ光源と同等な光源であるが、ＬＥＤ光源３aからの発熱を効率よく放熱するための放熱部３bと共に、光源装置３を構成している。   In FIG. 1, the projection lens 1 is fixed to a projection lens holder 2. The LED light source 3a is a light source equivalent to the conventional LED light source shown in FIG. 3, but constitutes a light source device 3 together with a heat radiating portion 3b for efficiently radiating heat generated from the LED light source 3a.

光源台座４は、上下光軸調整ネジ５によりＬＥＤ光源３aを含む光源装置３を、上下平行移動可能なように固定している。光源台座４は、投影レンズホルダー２に左右平行移動可能なように、左右光軸調整ネジ６により固定されている。   The light source pedestal 4 fixes the light source device 3 including the LED light source 3a with a vertical optical axis adjusting screw 5 so as to be movable in the vertical direction. The light source pedestal 4 is fixed to the projection lens holder 2 by a left / right optical axis adjustment screw 6 so as to be movable in the left / right direction.

ＬＥＤ光源３aは光源装置３の中に、図４に示す基本概念図において投影レンズ１の光軸Pに略垂直に配置されている。したがって、図２に示すようにＬＥＤ光源３aは上下光軸調整ネジ５により、その光軸を投影レンズ１の光軸に対して略垂直に上下平行に調整可能である。また、ＬＥＤ光源３aは左右光軸調整ネジ６により、その光軸を投影レンズの光軸に対して略垂直に左右平行に調整可能である。   The LED light source 3a is disposed in the light source device 3 substantially perpendicular to the optical axis P of the projection lens 1 in the basic conceptual diagram shown in FIG. Therefore, as shown in FIG. 2, the LED light source 3 a can be adjusted vertically and parallel to the optical axis of the projection lens 1 by the vertical optical axis adjusting screw 5. Further, the LED light source 3a can be adjusted by the left / right optical axis adjustment screw 6 so that its optical axis is substantially perpendicular to the optical axis of the projection lens in the horizontal direction.

したがって、ＬＥＤ光源３aは、上下光軸調整ネジ５と左右光軸調整ネジ６による互いに略直角な２軸の光軸調整機能により、図５に示すすれ違い配光特性に調整可能となる。   Therefore, the LED light source 3a can be adjusted to the passing light distribution characteristic shown in FIG. 5 by the biaxial optical axis adjustment function that is substantially perpendicular to each other by the vertical optical axis adjustment screw 5 and the left and right optical axis adjustment screw 6.

ここで、走行配光（ハイビーム）のような図５に示すカットラインHLを持たない配光特性にするためには、ＬＥＤ光源３aに遮蔽部材を含まないＬＥＤ光源を使用し、その光軸を同様に調整すればよい。   Here, in order to achieve a light distribution characteristic that does not have the cut line HL shown in FIG. 5 such as traveling light distribution (high beam), an LED light source that does not include a shielding member is used as the LED light source 3a, and its optical axis is changed. Adjustment may be made in the same manner.

次に、図６に示すようなＬＥＤ光源３aを複数使用した場合の構成を説明する。その場合、複数の全てＬＥＤ光源３aに前記した2軸の調整機能を設けて、例えば図７の配光特性になるようＬＥＤ光源３aの光軸を調整して実現できる。   Next, a configuration when a plurality of LED light sources 3a as shown in FIG. 6 are used will be described. In that case, all the plurality of LED light sources 3a can be realized by providing the above-described biaxial adjustment function and adjusting the optical axis of the LED light source 3a so as to obtain the light distribution characteristics of FIG.

しかしながら、使用する全てＬＥＤ光源３aの光軸を調整することは、工数もかかり面倒でもある。このため、例えば配光Hｂを分担する投影レンズ１ｂのＬＥＤ光源３ａを、光軸調整機能を持たせず固定する。配光HaとHcを分担するＬＥＤ光源３aにのみに光軸調整機能を設ける。その上で、光軸調整機能を有するＬＥＤ光源３aの光軸を調整することにより、固定配光Hbに合わせて配光Ha、Hcを形成して所望の配光にすることも可能である。   However, adjusting the optical axis of all the LED light sources 3a to be used is time consuming and cumbersome. For this reason, for example, the LED light source 3a of the projection lens 1b sharing the light distribution Hb is fixed without having an optical axis adjustment function. An optical axis adjustment function is provided only in the LED light source 3a that shares the light distributions Ha and Hc. In addition, by adjusting the optical axis of the LED light source 3a having the optical axis adjustment function, it is possible to form the light distributions Ha and Hc in accordance with the fixed light distribution Hb to obtain a desired light distribution.

また、遮蔽部材を含むＬＥＤ光源３aと遮光部材を含まないＬＥＤ光源の構成により、上述したすれ違い配光と走行配光の両方の配光を形成することもできる。   Moreover, the light distribution of both the passing light distribution and the traveling light distribution described above can be formed by the configuration of the LED light source 3a including the shielding member and the LED light source not including the light shielding member.

本実施例では、光源台座４によってＬＥＤ光源３aの上下光軸調整を行い、光源台座４と投影レンズホルダー２によって、ＬＥＤ光源３aの左右光軸調整をする構成にした。しかしながら、本構成に限定するものではない。例えば、光源台座４にてＬＥＤ光源３aの左右光軸調整を行い、光源台座４と投影レンズホルダー２によって、ＬＥＤ光源３aの上下光軸調整を行う構成でも可能である。   In the present embodiment, the vertical light axis adjustment of the LED light source 3 a is performed by the light source base 4, and the left and right optical axis adjustment of the LED light source 3 a is performed by the light source base 4 and the projection lens holder 2. However, it is not limited to this configuration. For example, a configuration in which the left and right optical axes of the LED light source 3a are adjusted by the light source pedestal 4 and the vertical light axis of the LED light source 3a is adjusted by the light source pedestal 4 and the projection lens holder 2 is possible.

また、本実施例では投影レンズホルダー２を使用して、2軸の光軸調整機能の1軸を構成した。しかしながら、車両用灯具の全体の構成によっては、灯具全体のハウジングなどの他の構成部材を利用して、1軸の光軸調整機能を構成することも可能である。   In this embodiment, the projection lens holder 2 is used to constitute one axis of the two-axis optical axis adjustment function. However, depending on the overall configuration of the vehicular lamp, it is possible to configure a single-axis optical axis adjustment function using other components such as a housing of the entire lamp.

このようにして、本発明によれば簡単な構成により、ＬＥＤ光源３aの光軸調整を容易にし、正確に配光を調整可能にする。また、光学構造や外観デザインの制約からも解放され、極めて良好な配光特性を有する美観を兼ね備えた車両用灯具を提供できる。   Thus, according to the present invention, the optical axis of the LED light source 3a can be easily adjusted and the light distribution can be accurately adjusted with a simple configuration. Further, it is possible to provide a vehicular lamp that is free from restrictions on the optical structure and appearance design and has an aesthetic appearance having extremely good light distribution characteristics.

本発明の代表的な実施形態を示す構成図である。It is a block diagram which shows typical embodiment of this invention. 図１の光軸調整機構部分の断面図である。It is sectional drawing of the optical axis adjustment mechanism part of FIG. 従来および本発明で使用されるＬＥＤ光源を示す図である。It is a figure which shows the LED light source used conventionally and by this invention. 従来および本発明におけるダイレクトプロジェクションタイプの車両用灯具の基本概念図である。It is the basic conceptual diagram of the vehicle lamp of the direct projection type in the past and this invention. 図４により得られるすれ違い配光特性の例を示す図である。It is a figure which shows the example of the passing light distribution characteristic obtained by FIG. 従来および本発明における複数のＬＥＤ光源を使用した場合のダイレクトプロジェクションタイプの車両用灯具の基本概念図である。It is a basic conceptual diagram of a direct projection type vehicular lamp when a plurality of LED light sources according to the related art and the present invention are used. 図６によるすれ違い配光特性の例を示す図である。It is a figure which shows the example of the passing light distribution characteristic by FIG. 従来の光軸調整機能を示す図である。It is a figure which shows the conventional optical axis adjustment function.

符号の説明Explanation of symbols

１ 投影レンズ
２ レンズホルダー
３ 光源装置
３ａ ＬＥＤ光源
３ｂ 放熱部
４ 光源台座
５ 上下光軸調整ネジ
６ 左右光軸調整ネジ DESCRIPTION OF SYMBOLS 1 Projection lens 2 Lens holder 3 Light source device 3a LED light source 3b Heat radiation part 4 Light source base 5 Vertical optical axis adjustment screw 6 Left / right optical axis adjustment screw

Claims (6)

ＬＥＤ光源と、このＬＥＤ光源からの光を投影する投影レンズと、この投影レンズを固定するレンズホルダーから構成される車両用灯具であって、
前記ＬＥＤ光源は、光源装置の中に前記投影レンズの光軸に対し略垂直に配置され、
前記ＬＥＤ光源はお互いが略直角方向となる２軸の光軸調整機能を有し、かつ、前記光軸調整機能の１軸は前記投影レンズの光軸に対して略垂直に設定されており、
前記光源装置は、前記投影レンズホルダーに対して移動可能に固定されており、
前記２軸の光軸調整機能は、前記レンズホルダーに対して前記光源装置を上下平行移動可能に固定する光軸調整部と、前記レンズホルダーに対して前記光源装置を左右平行移動可能に固定する光軸調整部からなることを特徴とする車両用灯具。 A vehicle lamp composed of an LED light source, a projection lens that projects light from the LED light source, and a lens holder that fixes the projection lens,
The LED light source is disposed in a light source device substantially perpendicular to the optical axis of the projection lens,
The LED light source has a biaxial optical axis adjustment function that is substantially perpendicular to each other, and one axis of the optical axis adjustment function is set substantially perpendicular to the optical axis of the projection lens ,
The light source device is fixed to be movable with respect to the projection lens holder,
The biaxial optical axis adjustment function fixes the light source device to the lens holder so that the light source device can be moved in parallel up and down, and fixes the light source device to the lens holder so that the light source device can be moved in parallel in the left and right direction. A vehicular lamp comprising an optical axis adjustment unit . 前記ＬＥＤ光源には、前記投影レンズにより照射方向に拡大投影されて明暗境界線を形成する遮光部材を含むことを特徴とする請求項１記載の車両用灯具。   The vehicular lamp according to claim 1, wherein the LED light source includes a light shielding member that is enlarged and projected in an irradiation direction by the projection lens to form a light / dark boundary line. 前記ＬＥＤ光源の光軸調整機能の１軸は、前記ＬＥＤ光源を含む光源装置と、この光源装置を含む光源台座を介して行われ、他の１軸は前記光源台座と前記投影レンズホルダーを介して行われることを特徴とする請求項１または請求項２記載の車両用灯具。   One axis of the optical axis adjustment function of the LED light source is performed via a light source device including the LED light source and a light source pedestal including the light source device, and the other one axis via the light source pedestal and the projection lens holder. The vehicular lamp according to claim 1, wherein the vehicular lamp is performed. 複数のＬＥＤ光源と、これら複数のＬＥＤ光源からの光を夫々に投影する複数の投影レンズと、前記複数の投影レンズを固定する少なくとも一つのレンズホルダーから構成される車両用灯具であって、
前記複数のＬＥＤ光源の少なくとも一つは、お互いが略直角方向となる２軸の光軸調整機能を有し、前記光軸調整機能の１軸は前記投影レンズの光軸に対して略垂直に設定されており、
前記複数のＬＥＤ光源の少なくとも一つは、光軸調整機能を持たずに固定され、
前記２軸の光軸調整機能を有するＬＥＤ光源は、光源装置の中に各々の投影レンズの光軸に対し略垂直に配置され、
前記光源装置は、前記投影レンズホルダーに対して移動可能に固定されており、
前記２軸の光軸調整機能は、前記レンズホルダーに対して前記光源装置を上下平行移動可能に固定する光軸調整部と、前記レンズホルダーに対して前記光源装置を左右平行移動可能に固定する光軸調整部からなり、
前記光軸調整機能を持たずに固定されたＬＥＤ光源からの照射光により形成される固定配光と、前記２軸の光軸調整機能を備えたＬＥＤ光源からの照射光により形成される配光とを合わせて配光を形成することを特徴とする車両用灯具。 A vehicular lamp composed of a plurality of LED light sources, a plurality of projection lenses that respectively project light from the plurality of LED light sources, and at least one lens holder that fixes the plurality of projection lenses,
At least one of the plurality of LED light sources has a biaxial optical axis adjustment function that is substantially perpendicular to each other, and one axis of the optical axis adjustment function is substantially perpendicular to the optical axis of the projection lens. Is set ,
At least one of the plurality of LED light sources is fixed without having an optical axis adjustment function,
The LED light source having the two-axis optical axis adjustment function is disposed substantially perpendicular to the optical axis of each projection lens in the light source device,
The light source device is fixed to be movable with respect to the projection lens holder,
The biaxial optical axis adjustment function fixes the light source device to the lens holder so that the light source device can be moved in parallel up and down, and fixes the light source device to the lens holder so that the light source device can be moved in parallel in the left and right direction. It consists of an optical axis adjustment unit,
Fixed light distribution formed by irradiation light from an LED light source fixed without having the optical axis adjustment function, and light distribution formed by irradiation light from an LED light source having the two-axis optical axis adjustment function And a vehicle lamp characterized by forming a light distribution . 前記複数のＬＥＤ光源の少なくとも一つは、このＬＥＤ光源に対応する投影レンズにより照射方向に拡大投影されて明暗境界線を形成する遮光部材を含むことを特徴とする請求項４記載の車両用灯具。   5. The vehicular lamp according to claim 4, wherein at least one of the plurality of LED light sources includes a light shielding member that is enlarged and projected in an irradiation direction by a projection lens corresponding to the LED light source to form a light / dark boundary line. . 前記遮光部材を有する前記ＬＥＤ光源の少なくとも一つは光軸調整機能を有し、この光軸調整機能の１軸は、前記ＬＥＤ光源を含む光源装置と、この光源装置を含む光源台座を介して行われ、他の１軸は前記光源台座と前記投影レンズホルダーを介して行われることを特徴とする請求項４または請求項５記載の車両用灯具。   At least one of the LED light sources having the light shielding member has an optical axis adjustment function, and one axis of the optical axis adjustment function is provided via a light source device including the LED light source and a light source base including the light source device. 6. The vehicular lamp according to claim 4, wherein the other one axis is performed through the light source base and the projection lens holder.
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