JP5359654B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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Publication number
JP5359654B2
JP5359654B2 JP2009178217A JP2009178217A JP5359654B2 JP 5359654 B2 JP5359654 B2 JP 5359654B2 JP 2009178217 A JP2009178217 A JP 2009178217A JP 2009178217 A JP2009178217 A JP 2009178217A JP 5359654 B2 JP5359654 B2 JP 5359654B2
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light
reflector
light source
light guide
vehicular lamp
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JP2009178217A
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JP2011034729A (en
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恭史 鈴木
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Ichikoh Industries Ltd
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Ichikoh Industries 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of deterioration of a light volume of a light distribution pattern of a headlight and of poor appearance of a conventional lighting fixture for a vehicle. <P>SOLUTION: The lighting fixture includes reflecting faces 9, 35 of which reflectors 4, 31 reflect light from a first light source 2 as a first light distribution pattern toward a given direction, a light guide part, a light-incident face 10 for letting in light from a second light source 3 into the light guide part, and light-irradiating faces 11, 21, 22 for irradiating light from the second light source 3 incident into the light guide part as a second light distribution pattern in a given direction. As a result, deterioration of a light volume of the first light distribution pattern is prevented, and appearance is improved. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

この発明は、１つのランプユニットに複数のランプ機能を有する車両用灯具に関するものである。   The present invention relates to a vehicular lamp having a plurality of lamp functions in one lamp unit.

この種の車両用灯具は、従来からある（たとえば、特許文献１）。以下、従来の車両用灯具について説明する。従来の車両用灯具は、リフレクタに設けられているヘッドランプバルブと、ハウジングに設けられている発光ダイオードバルブと、リフレクタに設けられている貫通孔に貫通して設けられている発光ダイオードバルブの導光部と、を備えるものである。ヘッドランプバルブを点灯させると、ヘッドランプの配光パターンが照射される。また、発光ダイオードバルブを点灯させると、導光部を通ってクリアランスランプの配光パターンが照射される。   This type of vehicular lamp is conventionally known (for example, Patent Document 1). Hereinafter, a conventional vehicle lamp will be described. A conventional vehicular lamp includes a headlamp bulb provided in a reflector, a light-emitting diode bulb provided in a housing, and a light-emitting diode bulb provided through a through-hole provided in the reflector. And an optical part. When the headlamp bulb is turned on, the light distribution pattern of the headlamp is irradiated. When the light emitting diode bulb is turned on, the light distribution pattern of the clearance lamp is irradiated through the light guide.

ところが、従来の車両用灯具は、発光ダイオードバルブの導光部を貫通させるための貫通孔をリフレクタに設けるものであるから、ヘッドランプバルブからの光を反射させるリフレクタの反射面の一部が減り、その分、ヘッドランプの配光パターンの光量が低下する。また、従来の車両用灯具は、リフレクタに貫通孔を設け、かつ、その貫通孔に発光ダイオードバルブの導光部を貫通させるものであるから、外部から貫通孔や発光ダイオードバルブの導光部が見えて、見栄え上課題がある。   However, since the conventional vehicular lamp is provided with a through-hole for penetrating the light guide portion of the light-emitting diode bulb in the reflector, a part of the reflecting surface of the reflector that reflects the light from the headlamp bulb is reduced. Accordingly, the light amount of the light distribution pattern of the headlamp is reduced. In addition, since the conventional vehicular lamp is provided with a through hole in the reflector and the light guide portion of the light emitting diode bulb is passed through the through hole, the through hole and the light guide portion of the light emitting diode bulb are externally provided. There is a problem in appearance and appearance.

特開２００８−１６６１４５号公報JP 2008-166145 A

この発明が解決しようとする問題点は、従来の車両用灯具では、ヘッドランプの配光パターンの光量が低下し、また、見栄え上課題があるという点にある。   The problems to be solved by the present invention are that, in the conventional vehicular lamp, the light amount of the light distribution pattern of the headlamp is reduced, and there is a problem in appearance.

この発明（請求項１にかかる発明）は、リフレクタが、第１光源からの光を第１配光パターンとして所定の方向に反射させる反射面と、導光部と、第２光源からの光を導光部中に入射させる入射面と、導光部中に入射した第２光源からの光を第２配光パターンとして所定の方向に出射させる出射面と、を有し、リフレクタが、光を照射させる方向側と、１方向側とがそれぞれ開口し、かつ、その他の４方向側が閉塞した中空形状をなし、リフレクタの内面には、反射面が設けられていて、リフレクタの１方向側の面には、入射面が設けられていて、リフレクタの光を照射させる方向側の面には、出射面が設けられている、ことを特徴とする。 In the present invention (the invention according to claim 1), the reflector reflects the light from the first light source as a first light distribution pattern in a predetermined direction, the light guide, and the light from the second light source. having an entrance surface through which in the light guiding portion, possess an exit surface for emitting in a predetermined direction the light from the second light source as a second light distribution pattern that has entered into the light guide portion, a reflector, a light The direction side to be irradiated and the one direction side are open, and the other four direction sides are closed to form a hollow shape. the, optionally incident surface is provided on the surface of the direction for irradiating the light of the reflector, exit surface that is provided, characterized in that.

また、この発明（請求項２にかかる発明）は、第１光源と第２光源とが同一の取付部材に取り付けられている、ことを特徴とする。   In addition, the present invention (the invention according to claim 2) is characterized in that the first light source and the second light source are mounted on the same mounting member.

さらに、この発明（請求項３にかかる発明）は、導光部のうち入射面および出射面以外の面には導光部中に入射した光を反射させる反射面としての表面処理が施されている、ことを特徴とする。   Further, in the present invention (the invention according to claim 3), a surface treatment as a reflecting surface for reflecting the light incident on the light guide unit is performed on the surfaces other than the incident surface and the output surface of the light guide unit. It is characterized by that.

さらにまた、この発明（請求項４にかかる発明）は、導光部が、導光性を有する樹脂から構成されていて、リフレクタのうち入射面および出射面を含む一部からなる、ことを特徴とする。   Furthermore, this invention (invention according to claim 4) is characterized in that the light guide portion is made of a resin having a light guide property, and is composed of a part including the entrance surface and the exit surface of the reflector. And

さらにまた、この発明（請求項５にかかる発明）は、出射面には第２光源からの光の出射を制御する出射制御素子群が設けられている、ことを特徴とする。   Furthermore, this invention (the invention according to claim 5) is characterized in that an emission control element group for controlling the emission of light from the second light source is provided on the emission surface.

さらにまた、この発明（請求項６にかかる発明）は、出射面を含む一部分の肉厚がその他の部分の肉厚よりも厚い、ことを特徴とする。   Furthermore, the present invention (the invention according to claim 6) is characterized in that the thickness of a part including the emission surface is thicker than the thickness of the other part.

さらにまた、この発明（請求項７にかかる発明）は、出射面を含む一部分の肉厚がその他の部分の肉厚よりも厚く、出射面を含む肉厚部分のうち出射面と対向する面が導光部中を導かれてきた第２光源からの光を出射面側に反射させる傾斜面である、ことを特徴とする。   Furthermore, according to the present invention (the invention according to claim 7), the thickness of a part including the emission surface is thicker than the thickness of the other part, and the surface of the thick part including the emission surface is opposed to the emission surface. It is an inclined surface that reflects the light from the second light source guided through the light guide part to the exit surface side.

この発明（請求項１にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、第１光源を点灯すると、第１光源からの光がリフレクタの反射面で第１配光パターンとして所定の方向に反射される。また、第２光源を点灯すると、第２光源からの光が、リフレクタの入射面からリフレクタの導光部中に入射し、リフレクタの導光部中出射面まで導かれ、その出射面から第２配光パターンとして所定の方向に出射する。このように、この発明（請求項１にかかる発明）の車両用灯具は、リフレクタに貫通孔を設ける必要が無いので、その分、第１配光パターンの光量が低下するようなことが無く、また、見栄えが低下するようなこともない。   In the vehicular lamp according to the present invention (the invention according to claim 1), when the first light source is turned on by the means for solving the above-described problem, the light from the first light source is reflected on the reflecting surface of the reflector. Reflected in a predetermined direction as a pattern. When the second light source is turned on, the light from the second light source enters the light guide portion of the reflector from the incident surface of the reflector, is guided to the exit surface in the light guide portion of the reflector, and is second from the exit surface. The light is emitted in a predetermined direction as a light distribution pattern. Thus, since the vehicle lamp of this invention (the invention according to claim 1) does not need to provide a through hole in the reflector, the amount of light of the first light distribution pattern is not reduced accordingly. In addition, the appearance does not deteriorate.

また、この発明（請求項２にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、第１光源および第２光源とリフレクタとの相対位置精度が向上する。その結果、第１光源からの光とリフレクタの反射面とで得られる第１配光パターン、および、第２光源からの光とリフレクタの入射面、導光部、出射面とで得られる第２配光パターンの精度を向上させることができる。   In the vehicular lamp of the present invention (the invention according to claim 2), the relative position accuracy between the first light source, the second light source and the reflector is improved by the means for solving the above-mentioned problems. As a result, the first light distribution pattern obtained by the light from the first light source and the reflecting surface of the reflector, and the second light obtained by the light from the second light source and the incident surface, the light guide unit, and the emitting surface of the reflector. The accuracy of the light distribution pattern can be improved.

しかも、この発明（請求項２にかかる発明）の車両用灯具は、第１光源と第２光源とを同一の取付部材に取り付けるので、第１光源と第２光源とを別個の取付部材に取り付けるものと比較して、部品点数を軽減することができ、その分、製造コストを安価にすることができる。   Moreover, in the vehicular lamp of the present invention (the invention according to claim 2), the first light source and the second light source are attached to the same mounting member, so that the first light source and the second light source are attached to separate mounting members. The number of parts can be reduced as compared with the product, and the manufacturing cost can be reduced accordingly.

さらに、この発明（請求項３にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、入射面から導光部中に入射した第２光源からの光が導光部のうち入射面および出射面以外の面に達すると、表面処理が施されている反射面で導光部中に反射する。この結果、導光部の出射面以外の面から外部に出射する光（露光）をなくすことができ、その分、第２光源からの光を導光部の出射面から効率良く出射させることができる。   Furthermore, in the vehicular lamp according to the present invention (the invention according to claim 3), the light from the second light source incident on the light guide unit from the incident surface is transmitted to the light guide unit by means for solving the above-described problem. Of these, when reaching a surface other than the entrance surface and the exit surface, the light is reflected in the light guide portion by the reflection surface subjected to the surface treatment. As a result, it is possible to eliminate light (exposure) exiting from the surface other than the exit surface of the light guide unit, and to efficiently emit light from the second light source from the exit surface of the light guide unit. it can.

さらにまた、この発明（請求項４にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、入射面から導光部中に入射した第２光源からの光を導光部中出射面側に確実に導くことができる。この結果、リフレクタ全体が導光部であるものと比較して、第２光源からの光を出射面から効率良く出射させることができる。   Furthermore, the vehicular lamp according to the present invention (the invention according to claim 4) is configured to guide the light from the second light source incident on the light guide portion from the incident surface into the light guide portion by means for solving the above-described problem. It can be reliably guided to the medium exit surface side. As a result, the light from the second light source can be efficiently emitted from the emission surface as compared with the case where the entire reflector is the light guide unit.

さらにまた、この発明（請求項５にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、出射面から出射する第２光源からの光であって第２配光パターンを高精度に配光制御することができる。   Furthermore, the vehicular lamp of the present invention (the invention according to claim 5) is a light from the second light source that is emitted from the emission surface and has the second light distribution pattern by means for solving the above-mentioned problems. Light distribution can be controlled with high accuracy.

さらにまた、この発明（請求項６にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、出射面を含む一部分の肉厚がその他の部分の肉厚とほぼ同一のものと比較して、肉厚が厚い分出射面の面積が大きくなる。その結果、出射面からの出射光量が増す。   Furthermore, in the vehicular lamp of the present invention (the invention according to claim 6), the thickness of a part including the emission surface is substantially the same as the thickness of the other part by means for solving the above-mentioned problem. As compared with the case, the area of the emission surface is increased by the increase in thickness. As a result, the amount of light emitted from the emission surface increases.

さらにまた、この発明（請求項７にかかる発明）の車両用灯具は、前記の課題を解決するための手段により、出射面からの出射光量がさらに増す。   Furthermore, in the vehicular lamp of the present invention (the invention according to claim 7), the amount of light emitted from the light exit surface is further increased by the means for solving the above-mentioned problems.

図１は、この発明にかかる車両用灯具の実施例１を示す主要構成部品の一部破断斜視図である。FIG. 1 is a partially broken perspective view of main components showing Embodiment 1 of a vehicular lamp according to the present invention. 図２は、同じく、主要構成部品を示す分解斜視図である。FIG. 2 is an exploded perspective view showing main components. 図３は、同じく、光路を示す主要構成部品の正面図である。FIG. 3 is also a front view of main components showing the optical path. 図４は、同じく、光路を示す主要構成部品の縦断面図（垂直断面図）である。FIG. 4 is also a longitudinal sectional view (vertical sectional view) of main components showing the optical path. 図５は、同じく、主要構成部品を示す側面図である。FIG. 5 is a side view showing the main components. 図６は、同じく、主要構成部品を示す縦断面図（垂直断面図）である。FIG. 6 is also a longitudinal sectional view (vertical sectional view) showing the main components. 図７は、同じく、出射面の第１変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 7 is also a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a first modification of the emission surface. 図８は、同じく、出射面の第２変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 8 is also a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a second modification of the exit surface. 図９は、同じく、導光部の第１変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 9 is also a partial longitudinal sectional view (partially vertical sectional view) showing a first modification of the light guide. 図１０は、同じく、導光部の第２変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 10 is also a partial longitudinal sectional view (partially vertical sectional view) showing a second modification of the light guide. 図１１は、同じく、導光部の第３変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 11 is also a partial longitudinal sectional view (partially vertical sectional view) showing a third modification of the light guide section. 図１２は、同じく、導光部の第４変形例を示す一部縦断面図（一部垂直断面図）である。FIG. 12 is also a partial longitudinal sectional view (partially vertical sectional view) showing a fourth modification of the light guide section. 図１３は、この発明にかかる車両用灯具の実施例２を示す主要構成部品の縦断面図（垂直断面図）である。FIG. 13: is a longitudinal cross-sectional view (vertical cross-sectional view) of the main components which shows Example 2 of the vehicle lamp concerning this invention.

以下に、この発明にかかる車両用灯具の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。この明細書において、「上、下、前、後、右、左」は、車両用灯具を車両に装備された際の「上、下、前、後、右、左」である。なお、図１および図３において、第２光源の半導体型光源を図示するために第２リフレクタ５の垂直板部１６の一部を破断してある。また、図３および図４において光路の一部を実線矢印で示してある。さらに、図４において、光路を明確にするためにハッチングを省略してある。さらにまた、図４（Ａ）は、図３におけるＡ−Ａ線断面図、図４（Ｂ）は、図３におけるＢ−Ｂ線断面図、図４（Ｃ）は、図３におけるＣ−Ｃ線断面図である。   Embodiments of a vehicular lamp according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In this specification, “up, down, front, back, right, left” is “up, down, front, back, right, left” when the vehicle lamp is mounted on the vehicle. 1 and 3, a part of the vertical plate portion 16 of the second reflector 5 is cut away in order to illustrate the semiconductor light source of the second light source. 3 and 4, a part of the optical path is indicated by a solid line arrow. Further, in FIG. 4, hatching is omitted to clarify the optical path. 4A is a sectional view taken along line AA in FIG. 3, FIG. 4B is a sectional view taken along line BB in FIG. 3, and FIG. 4C is a sectional view taken along line CC in FIG. It is line sectional drawing.

図１〜図６は、この発明にかかる車両用灯具の実施例１を示す。以下、この実施例１における車両用灯具の構成について説明する。図において、符号１は、この実施例１における車両用灯具である。前記車両用灯具１は、この例では、リフレクタタイプの車両用前照灯である。前記車両用灯具１は、ランプハウジング（図示せず）と、ランプレンズ（図示せず）と、第１光源２と、第２光源３と、第１リフレクタ４と、第２リフレクタ５と、取付部材６と、を備えるものである。前記車両用灯具１は、車両の前部の左右両側部の所定の位置に装備されている。   FIGS. 1-6 shows Example 1 of the vehicle lamp concerning this invention. Hereinafter, the configuration of the vehicular lamp in the first embodiment will be described. In the figure, reference numeral 1 denotes a vehicular lamp in the first embodiment. In this example, the vehicular lamp 1 is a reflector type vehicular headlamp. The vehicular lamp 1 includes a lamp housing (not shown), a lamp lens (not shown), a first light source 2, a second light source 3, a first reflector 4, a second reflector 5, and an attachment. The member 6 is provided. The vehicular lamp 1 is mounted at predetermined positions on both the left and right sides of the front portion of the vehicle.

前記第１光源２および前記第２光源３および前記第１リフレクタ４および前記第２リフレクタ５および前記取付部材６は、ランプユニットを構成する。前記第１光源２および前記第２光源３および前記第１リフレクタ４および前記第２リフレクタ５および前記取付部材６は、前記ランプハウジングおよび前記ランプレンズにより区画されている灯室内に光軸調整装置（図示せず）を介して光軸調整可能に配置されている。   The first light source 2, the second light source 3, the first reflector 4, the second reflector 5, and the mounting member 6 constitute a lamp unit. The first light source 2, the second light source 3, the first reflector 4, the second reflector 5, and the mounting member 6 are arranged in an optical axis adjustment device (in the lamp chamber defined by the lamp housing and the lamp lens). (Not shown) so that the optical axis can be adjusted.

前記第１光源２および前記第２光源３は、この例では、半導体型光源を使用する。前記第１光源２および前記第２光源３としての半導体型光源は、たとえば、ＬＥＤ、ＥＬ（有機ＥＬ）などの自発光半導体型光源（この実施例１ではＬＥＤ）を使用する。前記第１光源２および前記第２光源３としての半導体型光源は、板形状の基板７と、前記基板７の一面（上面）に固定されている微小な直方体形状の光源チップ（半導体チップ）の発光体（図示せず）と、前記発光体を覆う半球形状（ドーム形状）の光透過部材すなわちレンズ８と、から構成されている。   In this example, the first light source 2 and the second light source 3 use semiconductor type light sources. As the semiconductor light source as the first light source 2 and the second light source 3, for example, a self-luminous semiconductor light source (LED in this embodiment 1) such as LED and EL (organic EL) is used. The semiconductor light source as the first light source 2 and the second light source 3 includes a plate-shaped substrate 7 and a minute rectangular parallelepiped light source chip (semiconductor chip) fixed to one surface (upper surface) of the substrate 7. It comprises a light emitter (not shown) and a hemispherical (dome-shaped) light transmitting member that covers the light emitter, that is, a lens 8.

前記第１リフレクタ４は、導光性を有する樹脂、たとえば、アクリル樹脂やポリカーボネート樹脂などからなる。前記第１リフレクタ４は、光を照射（反射または出射）させる方向側、すなわち、前側と、下側とがそれぞれ開口し、かつ、その他の４方向側（後側、上側、右側、左側）が閉塞した回転放物面の２分の１（上半分）の中空形状をなす。   The first reflector 4 is made of a light-guiding resin such as an acrylic resin or a polycarbonate resin. The first reflector 4 is opened on the direction side where light is irradiated (reflected or emitted), that is, the front side and the lower side, and the other four direction sides (rear side, upper side, right side, left side) are opened. It forms a hollow shape that is half (upper half) of the closed paraboloid.

前記第１リフレクタ４の内面には、第１反射面９が設けられている。前記第１反射面９は、パラボラ系の自由曲面（ＮＵＲＢＳ曲面）からなる。前記第１反射面９は、基準焦点（擬似焦点、焦点）Ｆ１および基準光軸（擬似光軸、光軸）Ｚ１をそれぞれ有する。前記第１反射面９は、アルミ蒸着や銀塗装などにより形成されている。前記第１反射面９は、前記第１光源２からの光を第１配光パターンとして所定の方向に反射させる反射面である。   A first reflecting surface 9 is provided on the inner surface of the first reflector 4. The first reflecting surface 9 is a parabolic free-form surface (NURBS surface). The first reflecting surface 9 has a reference focus (pseudo focus, focus) F1 and a reference optical axis (pseudo optical axis, optical axis) Z1. The first reflecting surface 9 is formed by aluminum vapor deposition or silver coating. The first reflection surface 9 is a reflection surface that reflects light from the first light source 2 in a predetermined direction as a first light distribution pattern.

この例における前記第１リフレクタ４は、全体が導光部を構成するものである。前記第１リフレクタ４の前側の開口端部の左右両下面には、入射面１０が設けられている。前記入射面１０は、図４（Ａ）に示すように、この例では、円柱形の凹部が設けられていて、前記凹部の底面に半球形状の凸部が設けられてなる。なお、前記入射面１０としては、平面、曲面、傾斜面であっても良いし、小凹凸面であっても良い。   The first reflector 4 in this example constitutes the light guide part as a whole. Incident surfaces 10 are provided on the left and right lower surfaces of the opening end on the front side of the first reflector 4. As shown in FIG. 4 (A), the incident surface 10 is provided with a cylindrical concave portion, and a hemispherical convex portion is provided on the bottom surface of the concave portion. The incident surface 10 may be a flat surface, a curved surface, an inclined surface, or a small uneven surface.

前記第１リフレクタ４の前側の開口端部の前面には、半環状形状の出射面１１が設けられている。前記出射面１１には、出射制御素子群としての小凹凸のプリズム素子群（図示せず）が設けられている。   A semi-annular exit surface 11 is provided on the front surface of the opening end on the front side of the first reflector 4. The exit surface 11 is provided with a small uneven prism element group (not shown) as an exit control element group.

前記第１リフレクタ４の前側の開口端部において、前記出射面１１を含む一部分１２の肉厚は、その他の部分の肉厚よりも厚い。また、前記出射面１１を含む肉厚部分１２のうち前記出射面１１と対向する面１３は、傾斜面をなす。   At the opening end on the front side of the first reflector 4, the thickness of the portion 12 including the emission surface 11 is thicker than the thickness of the other portions. Moreover, the surface 13 which opposes the said output surface 11 among the thick parts 12 containing the said output surface 11 makes | forms an inclined surface.

前記第１リフレクタ４のうち、すなわち、導光部のうち前記入射面１０および前記出射面１１以外の面１４には、前記導光部すなわち前記第１リフレクタ４中に入射した光を反射させる反射面としての表面処理が施されている。なお、表面処理が施されている前記反射面１４には、前記第１反射面９も含まれている。前記反射面１４は、前記第１反射面９と同様に、アルミ蒸着や銀塗装などにより表面処理が施されている。   Reflection that reflects light incident on the light guide part, that is, the first reflector 4, on the first reflector 4, that is, on the surface 14 of the light guide part other than the incident surface 10 and the emission surface 11. Surface treatment is applied as a surface. The reflective surface 14 that has been surface-treated includes the first reflective surface 9. Similar to the first reflecting surface 9, the reflecting surface 14 is subjected to surface treatment by aluminum vapor deposition or silver coating.

前記第２リフレクタ５は、樹脂製部材からなる。前記第２リフレクタ５は、光を照射（反射または出射）させる方向側、すなわち、上側と、後側とがそれぞれ開口し、かつ、その他の４方向側（下側、前側、右側、左側）が閉塞した回転楕円面の４分の１（前下四半分）の中空形状をなす。   The second reflector 5 is made of a resin member. The second reflector 5 is opened on the direction side in which light is irradiated (reflected or emitted), that is, on the upper side and the rear side, and on the other four direction sides (lower side, front side, right side, left side). It forms a hollow shape that is a quarter (front lower quadrant) of the closed spheroid.

前記第２リフレクタ５の内面には、第２反射面１５が設けられている。前記第２反射面１５は、収束型の反射面であって、楕円系の自由曲面（ＮＵＲＢＳ曲面）からなる。前記第２反射面１５は、第１基準焦点（第１擬似焦点、第１焦点）Ｆ２１および第２基準焦点（第２擬似焦点、第２焦点）Ｆ２２および基準光軸（擬似光軸、光軸）Ｚ２をそれぞれ有する。前記第２反射面１５は、アルミ蒸着や銀塗装などにより形成されている。前記第２反射面１５は、前記第１光源２からの光を前記第１反射面９に反射させる反射面である。   A second reflecting surface 15 is provided on the inner surface of the second reflector 5. The second reflecting surface 15 is a converging-type reflecting surface and is composed of an elliptical free-form surface (NURBS curved surface). The second reflecting surface 15 includes a first reference focus (first pseudo focus, first focus) F21, a second reference focus (second pseudo focus, second focus) F22, and a reference optical axis (pseudo optical axis, optical axis). ) Each with Z2. The second reflecting surface 15 is formed by aluminum vapor deposition or silver coating. The second reflecting surface 15 is a reflecting surface that reflects light from the first light source 2 to the first reflecting surface 9.

前記第２リフレクタ５には、垂直板部１６と水平板部１７とがそれぞれ一体に設けられている。前記垂直板部１６は、前記第２リフレクタ５の後側の開口部と面一に設けられている。前記水平板部１７は、前記第２リフレクタ５の上側の開口部とほぼ面一に設けられている。   The second reflector 5 is integrally provided with a vertical plate portion 16 and a horizontal plate portion 17. The vertical plate portion 16 is provided flush with the opening on the rear side of the second reflector 5. The horizontal plate portion 17 is provided substantially flush with the opening on the upper side of the second reflector 5.

前記取付部材６は、熱伝導率が高い樹脂材料もしくは金属材料、例えばアルミダイカスト製から構成されている。前記取付部材６は、前記第１光源２と前記第２光源３とを取り付ける同一の取付部材と、ヒートシンク部材とを兼用するものである。   The mounting member 6 is made of a resin material or a metal material having a high thermal conductivity, for example, aluminum die casting. The mounting member 6 serves as both the same mounting member for mounting the first light source 2 and the second light source 3 and a heat sink member.

前記取付部材６には、１個の第１取付部１８と、２個の第２取付部１９と、を備えるものである。前記第１取付部１８には、前記第１光源２が１個取り付けられている。２個の前記第２取付部１９には、１個の前記第２光源３がそれぞれ取り付けられている。   The attachment member 6 includes one first attachment portion 18 and two second attachment portions 19. One first light source 2 is attached to the first attachment portion 18. One second light source 3 is attached to each of the two second attachment portions 19.

前記第１リフレクタ４および前記第２リフレクタ５および前記取付部６を組み立てる。すると、前記第１光源２は、前記第２反射面１５の前記第１基準焦点Ｆ２１もしくはその近傍に位置する。一方、２個の前記第２光源３は、前記第１リフレクタ４の前側の開口端部の左右両下面の前記入射面１０にそれぞれ対向する。さらに、前記第１反射面９の前記基準焦点Ｆ１と前記第２反射面１５の前記第２基準焦点Ｆ２２とは、一致もしくはほぼ一致する。   The first reflector 4, the second reflector 5, and the mounting portion 6 are assembled. Then, the first light source 2 is located at the first reference focal point F21 of the second reflecting surface 15 or in the vicinity thereof. On the other hand, the two second light sources 3 respectively oppose the incident surfaces 10 on the left and right lower surfaces of the opening end on the front side of the first reflector 4. Further, the reference focal point F1 of the first reflecting surface 9 and the second reference focal point F22 of the second reflecting surface 15 are coincident or substantially coincident with each other.

２個の前記第２光源３には、切替装置２０が電気的に接続されている。前記切替装置２０は、２個の前記第２光源３の発光状態を第１発光状態と第２発光状態とに切り替える装置である。前記切替装置２０は、たとえば、パルスワイド変調（ＰＷＭ）方式や電圧制御方式を用いるものである。   A switching device 20 is electrically connected to the two second light sources 3. The switching device 20 is a device that switches the light emission state of the two second light sources 3 between a first light emission state and a second light emission state. The switching device 20 uses, for example, a pulse wide modulation (PWM) method or a voltage control method.

この実施例１における車両用灯具１は、以上のごとき構成からなり、以下、その作用について説明する。   The vehicular lamp 1 according to the first embodiment is configured as described above, and the operation thereof will be described below.

まず、第１光源２を点灯発光させる。すると、第１光源２からの光（図６中の実線矢印を参照）は、第２反射面１５で反射する。その反射光は、第２反射面１５の第２基準焦点Ｆ２２（第１反射面９の基準焦点Ｆ１もしくはその近傍）に収束してさらに放射（拡散）して第１反射面９で反射する。その反射光は、第１配光パターン（図示せず）として所定の方向車両の前方に照射される。   First, the first light source 2 is turned on. Then, the light from the first light source 2 (see the solid line arrow in FIG. 6) is reflected by the second reflecting surface 15. The reflected light converges on the second reference focal point F22 of the second reflecting surface 15 (or the reference focal point F1 of the first reflecting surface 9 or the vicinity thereof), further radiates (diffuses), and is reflected by the first reflecting surface 9. The reflected light is irradiated in front of the vehicle in a predetermined direction as a first light distribution pattern (not shown).

第１配光パターンとしては、走行用配光パターン（ハイビーム用配光パターン）、霧用配光パターン（フォグランプ用配光パターン）、すれ違い用配光パターン（ロービーム用配光パターン）、高速道路用配光パターン（ミッドビーム用配光パターン）などの前照灯用配光パターンである。なお、カットオフラインを有するすれ違い用配光パターンや高速道路用配光パターンの場合には、第２リフレクタ５の水平板部１７がシェードとしての機能を果たす。水平板部１７のエッジを第２反射面１５の第２基準焦点Ｆ２２（第１反射面９の基準焦点Ｆ１もしくはその近傍）に位置させる。   As the first light distribution pattern, a light distribution pattern for travel (light distribution pattern for high beam), a light distribution pattern for fog (light distribution pattern for fog lamps), a light distribution pattern for passing (light distribution pattern for low beams), and for highways It is a light distribution pattern for headlamps such as a light distribution pattern (mid-beam light distribution pattern). In the case of a passing light distribution pattern or a highway light distribution pattern having a cut-off line, the horizontal plate portion 17 of the second reflector 5 functions as a shade. The edge of the horizontal flat plate portion 17 is positioned at the second reference focal point F22 of the second reflecting surface 15 (the reference focal point F1 of the first reflecting surface 9 or its vicinity).

つぎに、第２光源３を点灯発光させる。すると、第２光源３からの光（図３および図４中の実線矢印を参照）は、第１リフレクタ４の入射面１０から第１リフレクタ４すなわち導光部中に入射する。第１リフレクタ４すなわち導光部中に入射した光は、第１リフレクタ４の導光作用により、第１リフレクタ４中を導かれて、第１リフレクタ４の出射面１１から第２配光パターン（図示せず）として所定の方向車両の前方に照射される。   Next, the second light source 3 is turned on. Then, the light from the second light source 3 (see solid line arrows in FIGS. 3 and 4) enters the first reflector 4, that is, the light guide unit, from the incident surface 10 of the first reflector 4. The light that has entered the first reflector 4, that is, the light guide section, is guided through the first reflector 4 by the light guide action of the first reflector 4, and is emitted from the emission surface 11 of the first reflector 4 to the second light distribution pattern ( (Not shown) is irradiated in front of the vehicle in a predetermined direction.

第２配光パターンとしては、切替装置２０により、２個の第２光源３の発光状態を第１発光状態に切り替えた場合には、デイタイムランニングランプ用配光パターン（昼間灯用配光パターン）が得られ、２個の第２光源３の発光状態を第２発光状態に切り替えた場合には、クリアランスランプ用配光パターン（車幅灯用配光パターン）が得られる。なお、デイタイムランニングランプ用配光パターンが得られているときには、第１配光パターンは照射されていない。一方、クリアランスランプ用配光パターンが得られているときには、第１配光パターンは照射される。すなわち、第１配光パターンは、デイタイムランニングランプ用配光パターンが照射されているときには照射されず、一方、クリアランスランプ用配光パターンが照射されているときに照射される。   As the second light distribution pattern, when the light emission state of the two second light sources 3 is switched to the first light emission state by the switching device 20, the light distribution pattern for the daytime running lamp (the light distribution pattern for the daylight) When the light emission state of the two second light sources 3 is switched to the second light emission state, a clearance lamp light distribution pattern (vehicle width light distribution pattern) is obtained. When the daytime running lamp light distribution pattern is obtained, the first light distribution pattern is not irradiated. On the other hand, when the clearance lamp light distribution pattern is obtained, the first light distribution pattern is irradiated. That is, the first light distribution pattern is not irradiated when the daytime running lamp light distribution pattern is irradiated, but is irradiated when the clearance lamp light distribution pattern is irradiated.

この実施例１における車両用灯具１は、以上のごとき構成および作用からなり、以下、その効果について説明する。   The vehicular lamp 1 according to the first embodiment is configured and operated as described above, and the effects thereof will be described below.

この実施例１における車両用灯具１は、第１リフレクタ４に導光部を一体に設けたものであるから、リフレクタすなわち第１リフレクタ４や第２リフレクタ５に貫通孔（第２光源３の導光部を貫通させるための孔）を設ける必要が無いので、その分、第１配光パターンの光量が低下するようなことが無く、また、見栄えが低下するようなこともない。   Since the vehicular lamp 1 according to the first embodiment is provided with a light guide unit integrally with the first reflector 4, a through-hole (guide of the second light source 3) is formed in the reflector, that is, the first reflector 4 or the second reflector 5. Since there is no need to provide a hole for penetrating the light portion, the amount of light of the first light distribution pattern is not reduced by that amount, and the appearance is not reduced.

また、この実施例１における車両用灯具１は、第１光源２と第２光源３とを同一の取付部材６にそれぞれ取り付けるものであるから、第１光源２および第２光源３とリフレクタすなわち第１リフレクタ４および第２リフレクタ５との相対位置精度が向上する。その結果、第１光源２からの光と第１リフレクタ４の第１反射面９および第２リフレクタ５の第２反射面１５とで得られる第１配光パターン、および、第２光源３からの光と第１リフレクタ４の入射面１０、導光部、出射面１１とで得られる第２配光パターンの精度を向上させることができる。   Further, since the vehicular lamp 1 according to the first embodiment attaches the first light source 2 and the second light source 3 to the same attachment member 6, the first light source 2 and the second light source 3 and the reflector, that is, the first light source 3. The relative positional accuracy between the first reflector 4 and the second reflector 5 is improved. As a result, the first light distribution pattern obtained by the light from the first light source 2 and the first reflecting surface 9 of the first reflector 4 and the second reflecting surface 15 of the second reflector 5, and the second light source 3 It is possible to improve the accuracy of the second light distribution pattern obtained by the light and the incident surface 10 of the first reflector 4, the light guide unit, and the exit surface 11.

しかも、この実施例１における車両用灯具１は、第１光源２と第２光源３とを同一の取付部材６に取り付けるので、第１光源２と第２光源３とを別個の取付部材に取り付けるものと比較して、部品点数を軽減することができ、その分、製造コストを安価にすることができる。   In addition, since the vehicular lamp 1 according to the first embodiment attaches the first light source 2 and the second light source 3 to the same attachment member 6, the first light source 2 and the second light source 3 are attached to separate attachment members. The number of parts can be reduced as compared with the product, and the manufacturing cost can be reduced accordingly.

さらに、この実施例１における車両用灯具１は、第１リフレクタ４すなわち導光部のうち入射面１０および出射面１１以外の面に反射面１４（第１反射面９を含む）としての表面処理が施されているものであるから、入射面１０から第１リフレクタ４すなわち導光部中に入射した第２光源３からの光が第１リフレクタ４すなわち導光部のうち入射面１０および出射面１１以外の面に達すると、表面処理が施されている反射面１４（第１反射面９を含む）で第１リフレクタ４すなわち導光部中に反射する。この結果、第１リフレクタ４すなわち導光部の出射面１１以外の面から外部に出射する光（露光）をなくすことができ、その分、第２光源３からの光を第１リフレクタ４すなわち導光部の出射面１１から効率良く出射させることができる。   Furthermore, the vehicular lamp 1 according to the first embodiment has a surface treatment as a reflection surface 14 (including the first reflection surface 9) on the first reflector 4, that is, the light guide portion other than the entrance surface 10 and the exit surface 11. Therefore, the light from the second light source 3 that has entered the first reflector 4, that is, the light guide unit from the incident surface 10 is incident on the incident surface 10 and the output surface of the first reflector 4, that is, the light guide unit. When a surface other than 11 is reached, the light is reflected into the first reflector 4, that is, the light guide portion, by the reflective surface 14 (including the first reflective surface 9) subjected to the surface treatment. As a result, it is possible to eliminate the light (exposure) emitted from the first reflector 4, that is, the surface other than the light exit surface 11 of the light guide unit, and to the extent that the light from the second light source 3 is guided to the first reflector 4. The light can be efficiently emitted from the emission surface 11 of the optical part.

さらにまた、この実施例１における車両用灯具１は、出射面１１に第２光源３からの光の出射を制御する出射制御素子群としての小凹凸のプリズム素子群が設けられているものであるから、出射面１１から出射する第２光源３からの光であって第２配光パターンを高精度に配光制御することができる。   Furthermore, the vehicular lamp 1 according to the first embodiment is provided with a small concave and convex prism element group as an emission control element group for controlling the emission of light from the second light source 3 on the emission surface 11. Thus, the light from the second light source 3 emitted from the emission surface 11 and the second light distribution pattern can be controlled with high accuracy.

さらにまた、この実施例１における車両用灯具１は、出射面１１を含む一部分１２の肉厚がその他の部分の肉厚よりも厚いものであるから、出射面を含む一部分の肉厚がその他の部分の肉厚とほぼ同一のものと比較して、肉厚が厚い分出射面の面積が大きくなる。その結果、出射面１１からの出射光量が増す。   Furthermore, in the vehicular lamp 1 according to the first embodiment, the thickness of the portion 12 including the emission surface 11 is thicker than the thickness of the other portions. The area of the emission surface is increased as the thickness is increased compared to the portion having the same thickness as that of the portion. As a result, the amount of light emitted from the emission surface 11 increases.

さらにまた、この実施例１における車両用灯具１は、出射面１１を含む一部分１２の肉厚がその他の部分の肉厚よりも厚く、また、出射面１１を含む肉厚部分１２のうち出射面１１と対向する面１３が傾斜面をなすものであるから、出射面１１からの出射光量がさらに増す。   Furthermore, in the vehicular lamp 1 according to the first embodiment, the thickness of the portion 12 including the emission surface 11 is thicker than the thickness of the other portions, and the emission surface of the thick portion 12 including the emission surface 11. 11 is an inclined surface, the amount of light emitted from the exit surface 11 is further increased.

図７は、出射面の第１変形例を示す一部縦断面図（一部垂直断面図）である。この第１変形例の出射面２１は、出射面２１を含む一部分の肉厚がその他の部分の肉厚とほぼ同等の肉厚からなるものである。この第１変形例の出射面２１は、出射面１１を含む一部分１２の肉厚がその他の部分の肉厚よりも厚いものと比較して、出射面２１からの出射光量が第１配光パターンの光量に影響を与えない程度に若干減るが、第１リフレクタ４の構造が簡単となり、その分、製造コストが安価となる。   FIG. 7 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a first modification of the exit surface. The exit surface 21 of the first modification is such that the thickness of a portion including the exit surface 21 is substantially equal to the thickness of the other portions. The emission surface 21 of the first modification has a first light distribution pattern in which the amount of light emitted from the emission surface 21 is larger than that of the portion 12 including the emission surface 11 being thicker than the thickness of other portions. However, the structure of the first reflector 4 is simplified, and the manufacturing cost is reduced accordingly.

図８は、出射面の第２変形例を示す一部縦断面図（一部垂直断面図）である。この第２変形例の出射面２２は、出射面２２を含む一部分２３の肉厚がその他の部分の肉厚よりも厚く、一方、出射面２２を含む肉厚部分２３のうち出射面２２と対向する面２４が平面をなすものである。この第２変形例の出射面２２は、出射面１１を含む肉厚部分１２のうち出射面１１と対向する面１３が傾斜面をなすものと比較して、出射面２２からの出射光量が第１配光パターンの光量に影響を与えない程度に若干減るが、第１リフレクタ４の構造が簡単となり、その分、製造コストが安価となる。   FIG. 8 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a second modification of the emission surface. In the emission surface 22 of the second modification, the thickness of the portion 23 including the emission surface 22 is thicker than the thickness of the other portions, while facing the emission surface 22 of the thick portion 23 including the emission surface 22. The surface 24 to be formed is a flat surface. The emission surface 22 of the second modification has a light quantity emitted from the emission surface 22 that is the same as that of the thick portion 12 including the emission surface 11 and the surface 13 facing the emission surface 11 forms an inclined surface. Although it is slightly reduced to the extent that the light quantity of one light distribution pattern is not affected, the structure of the first reflector 4 is simplified, and the manufacturing cost is reduced accordingly.

図９は、導光部の第１変形例を示す一部縦断面図（一部垂直断面図）である。この第１変形例の導光部２５は、導光性を有する樹脂から構成されていて、第１リフレクタ４のうち入射面１０および第１変形例の出射面２１を含む一部からなるものである。この第１変形例の導光部２５は、入射面１０から導光部２５中に入射した第２光源３からの光を導光部２５中出射面２１側に確実に導くことができる。この結果、第１リフレクタ４全体が導光部であるものと比較して、第２光源３からの光を出射面２１から効率良く出射させることができる。   FIG. 9 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a first modification of the light guide. The light guide section 25 of the first modification is made of a resin having a light guide property, and is composed of a part of the first reflector 4 including the entrance surface 10 and the exit surface 21 of the first modification. is there. The light guide unit 25 of the first modification can reliably guide the light from the second light source 3 that has entered the light guide unit 25 from the incident surface 10 to the light exit surface 21 side in the light guide unit 25. As a result, the light from the second light source 3 can be efficiently emitted from the emission surface 21 as compared with the case where the entire first reflector 4 is the light guide.

図１０は、導光部の第２変形例を示す一部縦断面図（一部垂直断面図）である。この第２変形例の導光部２６は、導光性を有する樹脂から構成されていて、第１リフレクタ４のうち入射面１０および第２変形例の出射面２２を含む一部からなるものである。この第２変形例の導光部２６は、前記の第１変形例の導光部２５とほぼ同様に、入射面１０から導光部２６中に入射した第２光源３からの光を導光部２６中出射面２１側に確実に導くことができる。この結果、第１リフレクタ４全体が導光部であるものと比較して、第２光源３からの光を出射面２２から効率良く出射させることができる。しかも、出射面２２の面積が大きくなり、その分、出射面２２からの出射光量が増す。   FIG. 10 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a second modification of the light guide section. The light guide section 26 of the second modification is made of a resin having a light guide property, and is composed of a part of the first reflector 4 including the entrance surface 10 and the exit surface 22 of the second modification. is there. The light guide unit 26 of the second modification guides light from the second light source 3 that has entered the light guide unit 26 from the incident surface 10 in substantially the same manner as the light guide unit 25 of the first modification example. The portion 26 can be reliably guided to the emission surface 21 side. As a result, the light from the second light source 3 can be efficiently emitted from the emission surface 22 as compared with the case where the entire first reflector 4 is the light guide. In addition, the area of the emission surface 22 increases, and the amount of light emitted from the emission surface 22 increases accordingly.

図１１は、導光部の第３変形例を示す一部縦断面図（一部垂直断面図）である。この第３変形例の導光部２７は、導光性を有する樹脂から構成されていて、第１リフレクタ４のうち入射面１０および出射面１１を含む一部からなるものである。この第３変形例の導光部２７は、前記の第１、２変形例の導光部２５、２６とほぼ同様に、入射面１０から導光部２７中に入射した第２光源３からの光を導光部２７中出射面１１側に確実に導くことができる。この結果、第１リフレクタ４全体が導光部であるものと比較して、第２光源３からの光を出射面１１から効率良く出射させることができる。しかも、出射面１１を含む肉厚部分の導光部２７のうち出射面１１と対向する面１３が傾斜面をなすものであるから、出射面１１からの出射光量がさらに増す。   FIG. 11 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a third modification of the light guide section. The light guide portion 27 of the third modification is made of a resin having a light guide property, and includes a part of the first reflector 4 including the entrance surface 10 and the exit surface 11. The light guide section 27 of the third modification is substantially the same as the light guide sections 25 and 26 of the first and second modifications, and is from the second light source 3 incident on the light guide section 27 from the incident surface 10. Light can be reliably guided to the exit surface 11 side in the light guide 27. As a result, the light from the second light source 3 can be efficiently emitted from the emission surface 11 as compared with the case where the entire first reflector 4 is the light guide. In addition, since the light guide portion 27 of the thick portion including the emission surface 11 has a sloped surface 13 that faces the emission surface 11, the amount of light emitted from the emission surface 11 is further increased.

図１２は、導光部の第４変形例を示す一部縦断面図（一部垂直断面図）である。この第４変形例の導光部２８は、導光性を有する樹脂から構成されていて、第１リフレクタ４のうち入射面１０および出射面１１を含む一部からなるものである。この第４変形例の導光部２８は、前記の第１、２、３変形例の導光部２５、２６、２７とほぼ同様に、入射面１０から導光部２８中に入射した第２光源３からの光を導光部２８中出射面１１側に確実に導くことができる。この結果、第１リフレクタ４全体が導光部であるものと比較して、第２光源３からの光を出射面１１から効率良く出射させることができる。しかも、出射面１１を含む肉厚部分の導光部２８のうち出射面１１と対向する面１３が傾斜面をなし、かつ、導光部２８と第１リフレクタ４との境界面も傾斜面２９をなすものであるから、出射面１１からの出射光量がさらに増す。   FIG. 12 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing a fourth modification of the light guide section. The light guide portion 28 of the fourth modified example is made of a resin having a light guide property, and includes a part of the first reflector 4 including the entrance surface 10 and the exit surface 11. The light guide portion 28 of the fourth modification is substantially the same as the light guide portions 25, 26, 27 of the first, second, and third modifications, and the second light incident on the light guide portion 28 from the incident surface 10. The light from the light source 3 can be reliably guided to the exit surface 11 side in the light guide 28. As a result, the light from the second light source 3 can be efficiently emitted from the emission surface 11 as compared with the case where the entire first reflector 4 is the light guide. In addition, of the thick light guide portion 28 including the emission surface 11, the surface 13 facing the emission surface 11 forms an inclined surface, and the boundary surface between the light guide portion 28 and the first reflector 4 is also the inclined surface 29. Therefore, the amount of light emitted from the emission surface 11 is further increased.

図１３は、この発明にかかる車両用灯具の実施例２を示す。図中、図１〜図１２とどう符号は、同一のものを示す。以下、この実施例２における車両用灯具について説明する。図において、符号３０は、この実施例２における車両用灯具である。前記車両用灯具３０は、この例では、プロジェクタタイプの車両用前照灯である。前記車両用灯具３０は、ランプハウジング（図示せず）と、ランプレンズ（図示せず）と、第１光源２と、第２光源３と、リフレクタ３１と、取付部材３２と、投影レンズ（凸レンズ、集光レンズ）３３と、ホルダ部材３４と、を備えるものである。   FIG. 13 shows Example 2 of a vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. Hereinafter, the vehicular lamp in the second embodiment will be described. In the figure, reference numeral 30 denotes a vehicular lamp in the second embodiment. In this example, the vehicular lamp 30 is a projector-type vehicular headlamp. The vehicular lamp 30 includes a lamp housing (not shown), a lamp lens (not shown), a first light source 2, a second light source 3, a reflector 31, a mounting member 32, a projection lens (convex lens). , A condensing lens) 33 and a holder member 34.

前記第１光源２および前記第２光源３および前記リフレクタ３１および前記取付部材３２および前記投影レンズ３３および前記ホルダ部材３４は、ランプユニットを構成する。１個もしくは複数個の前記ランプユニットは、自動車用前照灯のランプハウジングおよびランプレンズにより区画されている灯室内に、たとえば光軸調整機構を介して配置されている。   The first light source 2, the second light source 3, the reflector 31, the mounting member 32, the projection lens 33, and the holder member 34 constitute a lamp unit. One or a plurality of the lamp units are arranged, for example, via an optical axis adjusting mechanism in a lamp chamber defined by a lamp housing and a lamp lens of an automotive headlamp.

前記リフレクタ３１は、前記の実施例１における車両用灯具１の第１リフレクタ４と同様に、導光性を有する樹脂、たとえば、アクリル樹脂やポリカーボネート樹脂などからなる。前記リフレクタ３１は、光を照射（反射または出射）させる方向側、すなわち、前側と、下側とがそれぞれ開口し、かつ、その他の４方向側（後側、上側、右側、左側）が閉塞した回転楕円面の４分の１（上後四半分）の中空形状をなす。   The reflector 31 is made of a light-guiding resin, such as an acrylic resin or a polycarbonate resin, like the first reflector 4 of the vehicle lamp 1 in the first embodiment. In the reflector 31, the direction side where light is irradiated (reflected or emitted), that is, the front side and the lower side are opened, and the other four direction sides (rear side, upper side, right side, left side) are closed. It forms a hollow shape that is a quarter of the spheroid (upper rear quarter).

前記リフレクタ３１の内面には、反射面３５が設けられている。前記反射面３５は、収束型反射面であって、楕円を基調とした反射面、たとえば、回転楕円面や楕円を基本とした自由曲面（ＮＵＲＢＳ曲面）などの反射面（図１３の垂直断面が楕円面をなし、かつ、図示しない水平断面が放物面ないし変形放物面をなす反射面）からなる。このために、前記反射面３５は、第１基準焦点（第１擬似焦点、第１焦点）Ｆ３１と第２基準焦点（第２擬似焦点、第２焦点、水平断面上の焦線、すなわち、上（平面）から見て両端が前記投影レンズ３３側に位置し中央が前記第１光源２側に位置するような湾曲した焦線）Ｆ３２と、基準光軸（擬似光軸、光軸）Ｚ３と、を有する。前記反射面３５は、アルミ蒸着や銀塗装などにより形成されている。前記反射面３５は、前記第１光源２からの光を第１配光パターンとして所定の方向に反射させる反射面である。   A reflecting surface 35 is provided on the inner surface of the reflector 31. The reflecting surface 35 is a convergent reflecting surface, and is a reflecting surface based on an ellipse, for example, a rotating ellipsoid or a reflecting surface such as a free-form surface (NURBS surface) based on an ellipse (the vertical cross section in FIG. A reflecting surface having an elliptical surface and a horizontal cross section (not shown) forming a paraboloid or a deformed paraboloid). For this purpose, the reflecting surface 35 includes a first reference focal point (first pseudo focal point, first focal point) F31 and a second reference focal point (second pseudo focal point, second focal point, a focal line on a horizontal section, that is, an upper portion. A curved focal line (F32) whose both ends are located on the projection lens 33 side and the center is located on the first light source 2 side when viewed from the plane, and a reference optical axis (pseudo optical axis, optical axis) Z3, Have. The reflection surface 35 is formed by aluminum vapor deposition or silver coating. The reflection surface 35 is a reflection surface that reflects light from the first light source 2 in a predetermined direction as a first light distribution pattern.

この例における前記リフレクタ３１は、全体が導光部を構成するものである。前記リフレクタ３１の前側の開口端部の左右両下面には、前記の実施例１における車両用灯具１の入射面１０と同様に、入射面（図示せず）が設けられている。前記リフレクタ３１の前側の開口端部の前面には、半環状形状の出射面１１が設けられている。   The reflector 31 in this example constitutes the light guide part as a whole. Similar to the incident surface 10 of the vehicular lamp 1 in the first embodiment, incident surfaces (not shown) are provided on the left and right lower surfaces of the opening end portion on the front side of the reflector 31. A semi-annular emission surface 11 is provided on the front surface of the front opening end of the reflector 31.

前記取付部材３２は、たとえば、樹脂や金属性ダイカストなどの熱伝導率が高い材料からなる。前記取付部材３２は、ヒートシンク部材と兼用する。前記取付部材３２は、上部が平板形状をなし、中間部から下部にかけてフィン形状をなす。前記取付部材３２には、前記第１光源２と前記第２光源３とがそれぞれ取り付けられている。すなわち、前記第１光源２と前記第２光源３とは、同一の前記取付部材３２にそれぞれ取り付けられている。前記第１光源２は、前記反射面３５の第１基準焦点Ｆ３１もしくはその近傍に位置する。前記第２光源３は、前記入射面に対向する。   The attachment member 32 is made of a material having high thermal conductivity such as resin or metallic die casting. The attachment member 32 is also used as a heat sink member. The attachment member 32 has a flat plate shape at the top and a fin shape from the middle to the bottom. The first light source 2 and the second light source 3 are attached to the attachment member 32, respectively. That is, the first light source 2 and the second light source 3 are respectively attached to the same attachment member 32. The first light source 2 is located at or near the first reference focal point F31 of the reflecting surface 35. The second light source 3 faces the incident surface.

前記投影レンズ３３は、非球面レンズの凸レンズである。前記投影レンズ３３は、図示しない前側焦点（前記第１光源２および前記第２光源３側の焦点）および後側焦点（外部側の焦点）と、前記前側焦点と前記後側焦点とを結ぶ光軸Ｚ３とを有する。前記投影レンズ３３の光軸Ｚ３と前記反射面３５の光軸Ｚ３とは、一致もしくはほぼ一致する。また、前記投影レンズ３３の前側焦点と前記反射面３５の第２基準焦点Ｆ３２とは、一致もしくはほぼ一致する。   The projection lens 33 is an aspheric lens convex lens. The projection lens 33 is a light that connects a front focus (focus on the first light source 2 and the second light source 3 side) and a rear focus (external focus) (not shown), and the front focus and the rear focus. It has an axis Z3. The optical axis Z3 of the projection lens 33 and the optical axis Z3 of the reflecting surface 35 are coincident or substantially coincident. Further, the front focal point of the projection lens 33 and the second reference focal point F32 of the reflecting surface 35 coincide with each other or substantially coincide with each other.

前記ホルダ部材３４は、前記投影レンズ３３を保持する。前記ホルダ部材３４は、カットオフラインを有する第１配光パターンを得る場合には、シェードとしての機能を果たし、エッジが前記反射面３５の第２基準焦点Ｆ３２もしくはその近傍に位置する。   The holder member 34 holds the projection lens 33. The holder member 34 functions as a shade when obtaining the first light distribution pattern having a cut-off line, and the edge is located at or near the second reference focal point F32 of the reflecting surface 35.

この実施例２における車両用灯具３０は、以上のごとき構成からなるので、前記の実施例１における車両用灯具１の作用効果とほぼ同様の作用効果を達成することができる。この実施例２における車両用灯具３０においては、前記の実施例１における車両用灯具１の第１、２変形例の出射面２１、２２および第１、２、３、４変形例の導光部２５、２６、２７、２８、を適用することができる。   Since the vehicular lamp 30 according to the second embodiment is configured as described above, it is possible to achieve substantially the same function and effect as those of the vehicular lamp 1 according to the first embodiment. In the vehicular lamp 30 according to the second embodiment, the emission surfaces 21 and 22 of the first and second modifications and the light guide portions of the first, second, third, and fourth modifications of the vehicular lamp 1 according to the first embodiment. 25, 26, 27, 28 can be applied.

なお、この実施例１における車両用灯具１がリフレクタタイプの車両用前照灯であり、また、この実施例２における車両用灯具３０がプロジェクタタイプの車両用前照灯である。ところが、この発明においては、リフレクタタイプの車両用前照灯やプロジェクタタイプの車両用前照灯以外の車両用灯具にも適用することができる。   The vehicle lamp 1 in the first embodiment is a reflector type vehicle headlamp, and the vehicle lamp 30 in the second embodiment is a projector type vehicle headlamp. However, the present invention can also be applied to vehicle lamps other than reflector-type vehicle headlamps and projector-type vehicle headlamps.

また、この実施例１、２においては、１個の第１光源２と２個の第２光源３とを使用するものである。ところが、この発明においては、第１光源を２個以上、また、第２光源を１個もしくは３個以上使用しても良い。   In the first and second embodiments, one first light source 2 and two second light sources 3 are used. However, in the present invention, two or more first light sources and one or three or more second light sources may be used.

さらに、この実施例１、３においては、第２光源３の点灯で得られる所定の配光パターンがデイタイムランニングランプ用配光パターンとクリアランスランプ用配光パターンとであって、２つのランプ機能が得られるものである。ところが、この発明においては、第２光源の点灯で得られる所定の配光パターンがデイタイムランニングランプ用配光パターンやクリアランスランプ用配光パターン以外の配光パターンであっても良いし、また、得られるランプ機能が１つのランプ機能あるいは３つ以上のランプ機能であっても良い。なお、１つのランプ機能の場合においては、切替装置が不要となる。   Further, in the first and third embodiments, the predetermined light distribution pattern obtained by turning on the second light source 3 is a daytime running lamp light distribution pattern and a clearance lamp light distribution pattern, and has two lamp functions. Is obtained. However, in the present invention, the predetermined light distribution pattern obtained by turning on the second light source may be a light distribution pattern other than the light distribution pattern for the daytime running lamp or the light distribution pattern for the clearance lamp, The obtained lamp function may be one lamp function or three or more lamp functions. In the case of one lamp function, no switching device is required.

１ 車両用灯具
２ 第１光源
３ 第２光源
４ 第１リフレクタ
５ 第２リフレクタ
６ 取付部材
７ 基板
８ レンズ
９ 第１反射面
１０ 入射面
１１、２１、２２ 出射面
１２、２３ 肉厚部分
１３、２９ 傾斜面
１４ 反射面
１５ 第２反射面
１６ 垂直板部
１７ 水平板部
１８ 第１取付部
１９ 第２取付部
２０ 切替装置
２４ 平面
２５、２６、２７、２８ 導光部
３０ 車両用灯具
３１ リフレクタ
３２ 取付部材
３３ 投影レンズ
３４ ホルダ部材
３５ 反射面
Ｆ１ 第１反射面の基準焦点（擬似焦点、焦点）
Ｚ１ 第１反射面の基準光軸（擬似光軸、光軸）
Ｆ２１ 第２反射面の第１基準焦点（第１擬似焦点、第１焦点）
Ｆ２２ 第２反射面の第２基準焦点（第２擬似焦点、第２焦点）
Ｚ２ 第２反射面の基準光軸（擬似光軸、光軸）
Ｆ３１ 反射面の第１基準焦点（第１擬似焦点、第１焦点）
Ｆ３２ 反射面の第２基準焦点（第２擬似焦点、第２焦点）
Ｚ３ 反射面の基準光軸（擬似光軸） DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 1st light source 3 2nd light source 4 1st reflector 5 2nd reflector 6 Mounting member 7 Board | substrate 8 Lens 9 1st reflective surface 10 Incident surface 11, 21, 22 Outgoing surface 12, 23 Thick part 13, DESCRIPTION OF SYMBOLS 29 Inclined surface 14 Reflecting surface 15 2nd reflecting surface 16 Vertical plate part 17 Horizontal flat plate part 18 1st attaching part 19 2nd attaching part 20 Switching device 24 Plane 25, 26, 27, 28 Light guide part 30 Vehicle lamp 31 Reflector 32 Attachment member 33 Projection lens 34 Holder member 35 Reflective surface F1 Reference focus (pseudo focus, focus) of the first reflective surface
Z1 Reference optical axis of the first reflecting surface (pseudo optical axis, optical axis)
F21 First reference focus (first pseudo focus, first focus) of the second reflecting surface
F22 Second reference focal point (second pseudo focal point, second focal point) of the second reflecting surface
Z2 Reference optical axis of second reflecting surface (pseudo optical axis, optical axis)
F31 first reference focus of the reflecting surface (first pseudo focus, first focus)
F32 Second reference focal point of the reflecting surface (second pseudo focal point, second focal point)
Z3 Reflective surface reference optical axis (pseudo optical axis)

Claims (7)

１つのランプユニットに複数のランプ機能を有する車両用灯具において、
第１光源と、第２光源と、リフレクタと、を備え、
前記リフレクタは、前記第１光源からの光を第１配光パターンとして所定の方向に反射させる反射面と、導光部と、前記第２光源からの光を前記導光部中に入射させる入射面と、前記導光部中に入射した前記第２光源からの光を第２配光パターンとして所定の方向に出射させる出射面と、を有し、
前記リフレクタは、光を照射させる方向側と、１方向側とがそれぞれ開口し、かつ、その他の４方向側が閉塞した中空形状をなし、
前記リフレクタの内面には、前記反射面が設けられていて、
前記リフレクタの前記１方向側の面には、前記入射面が設けられていて、
前記リフレクタの前記光を照射させる方向側の面には、前記出射面が設けられている、
ことを特徴とする車両用灯具。 In a vehicle lamp having a plurality of lamp functions in one lamp unit,
A first light source, a second light source, and a reflector;
The reflector includes a reflection surface that reflects light from the first light source in a predetermined direction as a first light distribution pattern, a light guide, and an incident light that enters the light from the second light source into the light guide. and the surface, an exit surface which emits in a predetermined direction as the second light distribution pattern light from said second light source is incident into the light guiding portion, was closed,
The reflector has a hollow shape in which a direction side to irradiate light and one direction side are opened, and the other four direction sides are closed,
The reflecting surface is provided on the inner surface of the reflector,
The incident surface is provided on the surface on the one-direction side of the reflector,
The surface of the direction to irradiate the light of the reflector, the exit surface that is provided,
A vehicular lamp characterized by the above. 前記第１光源と前記第２光源とは、同一の取付部材に取り付けられている、
ことを特徴とする請求項１に記載の車両用灯具。 The first light source and the second light source are attached to the same attachment member,
The vehicular lamp according to claim 1. 前記導光部のうち前記入射面および前記出射面以外の面には、前記導光部中に入射した光を反射させる反射面としての表面処理が施されている、
ことを特徴とする請求項１または２に記載の車両用灯具。 Surface treatment other than the entrance surface and the exit surface of the light guide is subjected to surface treatment as a reflection surface that reflects light incident on the light guide.
The vehicular lamp according to claim 1 or 2. 前記導光部は、導光性を有する樹脂から構成されていて、前記リフレクタのうち前記入射面および前記出射面を含む一部からなる、
ことを特徴とする請求項１〜３のいずれか１項に記載の車両用灯具。 The light guide portion is made of a resin having a light guide property, and includes a part including the entrance surface and the exit surface of the reflector.
The vehicular lamp according to any one of claims 1 to 3. 前記出射面には、前記第２光源からの光の出射を制御する出射制御素子群が設けられている、
ことを特徴とする請求項１〜４のいずれか１項に記載の車両用灯具。 The emission surface is provided with an emission control element group that controls emission of light from the second light source.
The vehicular lamp according to any one of claims 1 to 4, wherein the vehicular lamp is provided. 前記出射面を含む一部分の肉厚は、その他の部分の肉厚よりも厚い、
ことを特徴とする請求項１〜５のいずれか１項に記載の車両用灯具。 The thickness of a part including the emission surface is thicker than the thickness of the other part,
The vehicular lamp according to any one of claims 1 to 5, wherein the vehicular lamp is provided. 前記出射面を含む一部分の肉厚は、その他の部分の肉厚よりも厚く、
前記出射面を含む肉厚部分のうち前記出射面と対向する面は、前記導光部中を導かれてきた前記第２光源からの光を前記出射面側に反射させる傾斜面である、
ことを特徴とする請求項１〜５のいずれか１項に記載の車両用灯具。 The thickness of a part including the emission surface is thicker than the thickness of the other part,
Of the thick portion including the emission surface, the surface facing the emission surface is an inclined surface that reflects light from the second light source guided through the light guide unit toward the emission surface side.
The vehicular lamp according to any one of claims 1 to 5, wherein the vehicular lamp is provided.
JP2009178217A 2009-07-30 2009-07-30 Vehicle lighting Active JP5359654B2 (en)

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