JPWO2020100188A1 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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JPWO2020100188A1
JPWO2020100188A1 JP2020556476A JP2020556476A JPWO2020100188A1 JP WO2020100188 A1 JPWO2020100188 A1 JP WO2020100188A1 JP 2020556476 A JP2020556476 A JP 2020556476A JP 2020556476 A JP2020556476 A JP 2020556476A JP WO2020100188 A1 JPWO2020100188 A1 JP WO2020100188A1
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led
plate
holder
shaped member
optical lens
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JP7042926B2 (en
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中野　良一
良一 中野
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/29—Attachment thereof
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks

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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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

ホルダ（１００）は、ＬＥＤ（８）の背面を開放する開口部（９ｂ）が設けられたＬＥＤ載置部（９ａ）と、第一給電部（５）及び第二給電部（４）で構成されてＬＥＤ（８）に給電する給電部とを有する。ヒートシンク（１０）等で構成される放熱部材は、開口部（９ｂ）を通じてＬＥＤ（８）に直接接触する。光学レンズ（２）は、ＬＥＤ（８）から出射される光を直接受光して当該光を車両前方に投射する。突起（９１，９２，９３，９４）で構成される第一位置決め部は、ＬＥＤ（８）とホルダ（１００）との位置決めを行う。凸形状部（９５，９６）及び凹形状部（９７，９８）で構成される第二位置決め部は、ホルダ（１００）と光学レンズ（２）との位置決めを行う。 The holder (100) is composed of an LED mounting portion (9a) provided with an opening (9b) for opening the back surface of the LED (8), a first feeding portion (5), and a second feeding portion (4). It has a power feeding unit that supplies power to the LED (8). The heat radiating member composed of the heat sink (10) and the like comes into direct contact with the LED (8) through the opening (9b). The optical lens (2) directly receives the light emitted from the LED (8) and projects the light in front of the vehicle. The first positioning unit composed of the protrusions (91, 92, 93, 94) positions the LED (8) and the holder (100). The second positioning portion composed of the convex portion (95,96) and the concave portion (97,98) positions the holder (100) and the optical lens (2).

Description

この発明は、ＬＥＤ（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｄｉｏｄｅ）を光源に用いる車両用灯具に関するものである。 The present invention relates to a vehicle lamp using an LED (Light Emitting Diode) as a light source.

車両用灯具は、夜間の視野を確保するために大光量を要求される。また、車両用灯具は、マイナス４０度程度の低い環境温度域から１００度程度の高い環境温度域までの範囲で同じ光量を要求される。 Vehicle lighting fixtures are required to have a large amount of light in order to secure a field of view at night. Further, vehicle lamps are required to have the same amount of light in a range from a low environmental temperature range of about -40 degrees to a high environmental temperature range of about 100 degrees.

車両用灯具の光源として用いられるＬＥＤは、環境温度の上昇及び発光時に自身で生じる熱により発光強度が低下するという性質を持つ。そのため、高温下でも十分な発光強度を維持するためには、ＬＥＤの熱を効率よく外部に放出する構造が必要となる。 LEDs used as light sources for vehicle lamps have the property that the emission intensity decreases due to the rise in environmental temperature and the heat generated by themselves during light emission. Therefore, in order to maintain sufficient emission intensity even at high temperatures, a structure that efficiently releases the heat of the LED to the outside is required.

従来、車両用灯具で用いられるＬＥＤの放熱構造は、ＬＥＤがはんだ付けされた樹脂又は金属製のプリント基板を介して放熱部材へ放熱する構造であった（例えば、特許文献１参照）。 Conventionally, the heat dissipation structure of an LED used in a vehicle lamp has a structure in which the LED dissipates heat to a heat dissipation member via a soldered resin or metal printed circuit board (see, for example, Patent Document 1).

特開２０１４−１９７５５０号公報Japanese Unexamined Patent Publication No. 2014-197550

従来の車両用灯具は、ＬＥＤと放熱部材との間にプリント基板が介在するので、ＬＥＤの熱を放熱部材に直接的に伝達することができず、プリント基板の熱抵抗分だけ放熱能力が低下してしまうという課題があった。 In conventional vehicle lighting fixtures, since the printed circuit board is interposed between the LED and the heat radiating member, the heat of the LED cannot be directly transferred to the heat radiating member, and the heat radiating capacity is reduced by the thermal resistance of the printed circuit board. There was a problem of doing it.

ところで、光学レンズがＬＥＤから出射される光を直接受光して当該光を車両前方に投射する投射タイプの車両用灯具では、光学レンズとＬＥＤとの位置精度がそのまま配光制御の精度に直結する。そのため、当該投射タイプの車両用灯具において、配光を適切に制御するためには、ＬＥＤと光学レンズとの位置決めを高精度に行う必要がある。 By the way, in a projection type vehicle lamp in which an optical lens directly receives light emitted from an LED and projects the light in front of the vehicle, the positional accuracy between the optical lens and the LED is directly linked to the accuracy of light distribution control. .. Therefore, in the projection type vehicle lamp, it is necessary to position the LED and the optical lens with high accuracy in order to appropriately control the light distribution.

この発明は、上記のような課題を解決するためになされたもので、上記投射タイプの車両用灯具において、放熱能力の向上と適切な配光制御の両立を図ることを目的とする。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to achieve both improvement of heat dissipation capacity and appropriate light distribution control in the above-mentioned projection type vehicle lamp.

この発明に係る車両用灯具は、前面に出射部を有するＬＥＤと、ＬＥＤの背面を開放する開口部が設けられたＬＥＤ載置部とＬＥＤに給電する給電部とを有するホルダと、開口部を通じてＬＥＤに直接接触する放熱部材と、ＬＥＤから出射される光を直接受光して当該光を車両前方に投射する光学レンズと、ＬＥＤとホルダとの位置決めを行う第一位置決め部と、ホルダと光学レンズとの位置決めを行う第二位置決め部とを備えるものである。 The vehicle lamp according to the present invention has an LED having an LED on the front surface, a holder having an LED mounting portion provided with an opening for opening the back surface of the LED, and a feeding portion for supplying power to the LED, and through the opening. A heat radiating member that comes into direct contact with the LED, an optical lens that directly receives the light emitted from the LED and projects the light toward the front of the vehicle, a first positioning unit that positions the LED and the holder, and a holder and an optical lens. It is provided with a second positioning unit for positioning with.

この発明によれば、光学レンズがＬＥＤから出射される光を直接受光して当該光を車両前方に投射する投射タイプの車両用灯具において、放熱能力の向上と適切な配光制御の両立を図ることができる。 According to the present invention, in a projection type vehicle lamp in which an optical lens directly receives light emitted from an LED and projects the light in front of the vehicle, both improvement of heat dissipation capacity and appropriate light distribution control are achieved. be able to.

実施の形態１に係る車両用灯具の構成例を示す分解斜視図である。FIG. 5 is an exploded perspective view showing a configuration example of a vehicle lamp according to the first embodiment. 実施の形態１に係る車両用灯具の構成例を示す断面図である。It is sectional drawing which shows the structural example of the lighting fixture for vehicle which concerns on Embodiment 1. FIG. 実施の形態１における第一板状部材を示す平面図であり、ＬＥＤが載置されていない状態を示す。It is a top view which shows the 1st plate-shaped member in Embodiment 1, and shows the state which LED is not mounted. 実施の形態１における第一板状部材を示す平面図であり、ＬＥＤが載置された状態を示す。It is a top view which shows the 1st plate-shaped member in Embodiment 1, and shows the state which LED is placed. 実施の形態１におけるホルダとＬＥＤとの位置決めを示す平面図である。It is a top view which shows the positioning of a holder and an LED in Embodiment 1. FIG. 実施の形態１におけるホルダと光学レンズとの位置決めを示す斜視図である。It is a perspective view which shows the positioning of a holder and an optical lens in Embodiment 1. FIG. 実施の形態１におけるホルダの給電部を示す斜視図である。It is a perspective view which shows the feeding part of the holder in Embodiment 1. FIG. 実施の形態１におけるホルダの変形例を示す斜視図であり、図８Ａは折り曲げ前の状態、図８Ｂは折り曲げ後の状態を示す。It is a perspective view which shows the modification of the holder in Embodiment 1, FIG. 8A shows the state before bending, and FIG. 8B shows the state after bending.

以下、この発明をより詳細に説明するために、この発明を実施するための形態について、添付の図面に従って説明する。
実施の形態１．
図１は、実施の形態１に係る車両用灯具の構成例を示す分解斜視図である。図２は、実施の形態１に係る車両用灯具の構成例を示す断面図である。図１及び図２に示されるように、車両用灯具は、光源であるＬＥＤ８、ＬＥＤ８の光を車両前方に投射する光学レンズ２、ＬＥＤ８を保持するホルダ１００、及び放熱部材であるヒートシンク１０を含む。実施の形態１に係る車両用灯具は、ＬＥＤ８の光を光学レンズ２が直接受光して車両前方に投射する投射タイプの車両用灯具であって、上記特許文献１に記載されているようなリフレクタ及びシェードは不要である。Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1.
FIG. 1 is an exploded perspective view showing a configuration example of a vehicle lamp according to the first embodiment. FIG. 2 is a cross-sectional view showing a configuration example of a vehicle lamp according to the first embodiment. As shown in FIGS. 1 and 2, the vehicle lighting equipment includes an LED 8 as a light source, an optical lens 2 that projects the light of the LED 8 toward the front of the vehicle, a holder 100 that holds the LED 8, and a heat sink 10 that is a heat radiating member. .. The vehicle lamp according to the first embodiment is a projection type vehicle lamp in which the optical lens 2 directly receives the light of the LED 8 and projects the light to the front of the vehicle, and is a reflector as described in Patent Document 1. And no shade is needed.

図１に示されるＸ軸方向は車両前方向であり、Ｙ軸方向は車両上方向であり、Ｚ軸方向は車両幅方向である。以下では、車両の前後、上下、及び左右方向を基準にして、車両用灯具を説明する。 The X-axis direction shown in FIG. 1 is the vehicle front direction, the Y-axis direction is the vehicle upward direction, and the Z-axis direction is the vehicle width direction. In the following, vehicle lighting fixtures will be described with reference to the front-rear, up-down, and left-right directions of the vehicle.

図３は、実施の形態１における第一板状部材９を示す平面図であり、ＬＥＤ８が載置されていない状態を示す。図４は、実施の形態１における第一板状部材９を示す平面図であり、ＬＥＤ８が載置された状態を示す。ＬＥＤ８は、前面に出射部８ａと電極部８ｂとを有する。ＬＥＤ８の前面には、光学レンズ２が対向する。光学レンズ２は、例えば、透明な樹脂製である。 FIG. 3 is a plan view showing the first plate-shaped member 9 according to the first embodiment, and shows a state in which the LED 8 is not mounted. FIG. 4 is a plan view showing the first plate-shaped member 9 according to the first embodiment, and shows a state in which the LED 8 is mounted. The LED 8 has an exit portion 8a and an electrode portion 8b on the front surface. The optical lens 2 faces the front surface of the LED 8. The optical lens 2 is made of, for example, a transparent resin.

ホルダ１００は、一対の板状部材である第一板状部材９と第二板状部材３とからなる。第一板状部材９及び第二板状部材３は、例えば、樹脂成形品である。第一板状部材９は、ＬＥＤ８を載置するＬＥＤ載置部９ａを有する。ＬＥＤ載置部９ａには、ＬＥＤ８の背面を剥き出しの開放状態にする開口部９ｂが設けられている。また、図３に示されるように、開口部９ｂの四隅には、それぞれ、ＬＥＤ８を載置する座面となるＬＥＤ載置座面９ｆが設けられている。なお、ＬＥＤ載置座面９ｆの形状、個数、及び位置は、図３の例に限定されない。また、第一板状部材９の前面には、第一板状部材９が第二板状部材３に組み付くための２個の凸形状部９ｄ及び２個の爪９ｅが設けられている。さらに、第一板状部材９には、２個の締結部材１を貫通させる２個の貫通穴１ａが設けられている。 The holder 100 is composed of a pair of plate-shaped members, a first plate-shaped member 9 and a second plate-shaped member 3. The first plate-shaped member 9 and the second plate-shaped member 3 are, for example, resin molded products. The first plate-shaped member 9 has an LED mounting portion 9a on which the LED 8 is mounted. The LED mounting portion 9a is provided with an opening 9b that exposes the back surface of the LED 8 to an open state. Further, as shown in FIG. 3, LED mounting seat surfaces 9f, which serve as seat surfaces for mounting the LEDs 8, are provided at the four corners of the opening 9b, respectively. The shape, number, and position of the LED mounting seat surface 9f are not limited to the example of FIG. Further, on the front surface of the first plate-shaped member 9, two convex-shaped portions 9d and two claws 9e for assembling the first plate-shaped member 9 to the second plate-shaped member 3 are provided. Further, the first plate-shaped member 9 is provided with two through holes 1a through which the two fastening members 1 pass through.

第二板状部材３は、光学レンズ２とＬＥＤ８とに対向する位置に設けられた開口部３ａを有する。ＬＥＤ８の出射部８ａから出射された光は、開口部３ａを通って光学レンズ２に入射する。また、第二板状部材３には、第一板状部材９の凸形状部９ｄが係合する凹形状部３ｂが２個設けられている。さらに、第二板状部材３には、２個の締結部材１を貫通させる２個の貫通穴１ａが設けられている。 The second plate-shaped member 3 has an opening 3a provided at a position facing the optical lens 2 and the LED 8. The light emitted from the exit portion 8a of the LED 8 passes through the opening 3a and enters the optical lens 2. Further, the second plate-shaped member 3 is provided with two concave-shaped portions 3b with which the convex-shaped portion 9d of the first plate-shaped member 9 is engaged. Further, the second plate-shaped member 3 is provided with two through holes 1a through which the two fastening members 1 pass through.

第一板状部材９に第二板状部材３が組み付くことにより、第一板状部材９と第二板状部材３とが一体となり、ＬＥＤ８のホルダ１００として機能する。図示例では、第一板状部材９の凸形状部９ｄが第二板状部材３の凹形状部３ｂに係合すると共に、第一板状部材９の爪９ｅが第二板状部材３の縁部に引っ掛かることにより、第一板状部材９と第二板状部材３とが互いに密着した状態に組み付く。なお、第一板状部材９と第二板状部材３の組み付け方法は、図示例に限定されない。 By assembling the second plate-shaped member 3 to the first plate-shaped member 9, the first plate-shaped member 9 and the second plate-shaped member 3 are integrated and function as the holder 100 of the LED 8. In the illustrated example, the convex portion 9d of the first plate-shaped member 9 engages with the concave-shaped portion 3b of the second plate-shaped member 3, and the claw 9e of the first plate-shaped member 9 is the second plate-shaped member 3. By being caught on the edge portion, the first plate-shaped member 9 and the second plate-shaped member 3 are assembled in close contact with each other. The method of assembling the first plate-shaped member 9 and the second plate-shaped member 3 is not limited to the illustrated example.

ＬＥＤ８を保持した状態のホルダ１００は、光学レンズ２に組み付けられ、続いて光学レンズ２とホルダ１００は、締結部材１によりヒートシンク１０に固定される。光学レンズ２には、２個の締結部材１を貫通させる２個の貫通穴１ａが設けられている。ヒートシンク１０には、２個の締結部材１が締結される２個の締結穴１ｂが設けられている。このヒートシンク１０は、例えば、アルミダイカスト製である。ＬＥＤ８の背面は、開口部９ｂを通じてヒートシンク１０に直接接触する。図示例では、ヒートシンク１０に、開口部９ｂ内に突出してＬＥＤ８の背面に接触する凸形状が設けられているが、平面であってもよい。ヒートシンク１０が平面である場合、ヒートシンク１０上に熱伝導コンパウンド等の放熱部材を設け、この熱伝導コンパウンド等をＬＥＤ８の背面に直接接触させればよい。なお、ヒートシンク１０に上記凸形状が設けられている場合にも、ＬＥＤ８と上記凸形状との間に熱伝導コンパウンド等の放熱部材を介在させてもよい。 The holder 100 holding the LED 8 is assembled to the optical lens 2, and then the optical lens 2 and the holder 100 are fixed to the heat sink 10 by the fastening member 1. The optical lens 2 is provided with two through holes 1a through which the two fastening members 1 pass through. The heat sink 10 is provided with two fastening holes 1b to which the two fastening members 1 are fastened. The heat sink 10 is made of, for example, aluminum die-cast. The back surface of the LED 8 comes into direct contact with the heat sink 10 through the opening 9b. In the illustrated example, the heat sink 10 is provided with a convex shape that protrudes into the opening 9b and contacts the back surface of the LED 8, but may be flat. When the heat sink 10 is flat, a heat radiating member such as a heat conductive compound may be provided on the heat sink 10 and the heat conductive compound or the like may be brought into direct contact with the back surface of the LED 8. Even when the heat sink 10 is provided with the convex shape, a heat radiating member such as a heat conductive compound may be interposed between the LED 8 and the convex shape.

ここで、締結部材１は、光学レンズ２とホルダ１００とを一体的に組み付けてヒートシンク１０に固定するものであって、光学レンズ２とホルダ１００との位置決めを行うものではない。光学レンズ２の貫通穴１ａ、第二板状部材３の貫通穴１ａ、及び第一板状部材９の貫通穴１ａの直径は、締結部材１の直径に比して大きく設定されている。即ち、実施の形態１の車両用灯具は、ヒートシンク１０を基準としてホルダ１００の位置決めを行うものではない。 Here, the fastening member 1 integrally assembles the optical lens 2 and the holder 100 and fixes them to the heat sink 10, and does not position the optical lens 2 and the holder 100. The diameters of the through hole 1a of the optical lens 2, the through hole 1a of the second plate-shaped member 3, and the through hole 1a of the first plate-shaped member 9 are set larger than the diameter of the fastening member 1. That is, the vehicle lamp of the first embodiment does not position the holder 100 with reference to the heat sink 10.

上述したように、実施の形態１の車両用灯具は、ＬＥＤ８の出射部８ａから出射した光を光学レンズ２が直接受光して車両前方に投射する投射タイプの車両用灯具である。このタイプでは、光学レンズ２とＬＥＤ８の位置精度がそのまま配光制御の精度に直結する。そのため、ＬＥＤ８は、本来は何らかの構成で固定されているべきである。しかしながら、従来のようにＬＥＤ８をはんだでプリント基板に固定した場合、ＬＥＤ８の背面とヒートシンク１０との間にプリント基板が介在することとなり、放熱能力が低下する。 As described above, the vehicle lighting equipment of the first embodiment is a projection type vehicle lighting equipment in which the optical lens 2 directly receives the light emitted from the exit portion 8a of the LED 8 and projects it to the front of the vehicle. In this type, the positional accuracy of the optical lens 2 and the LED 8 is directly linked to the accuracy of the light distribution control. Therefore, the LED 8 should be fixed in some form originally. However, when the LED 8 is fixed to the printed circuit board with solder as in the conventional case, the printed circuit board is interposed between the back surface of the LED 8 and the heat sink 10, and the heat dissipation capacity is lowered.

そこで、実施の形態１では、プリント基板を用いずに、ＬＥＤ８の背面を開放したホルダ１００を用いることで、放熱能力の向上を図る。即ち、図２に示される通り、ヒートシンク１０等の放熱部材がＬＥＤ８の背面に直接接触することが可能となり、ＬＥＤ８の実装にプリント基板を用いるよりも、放熱能力の向上が期待できる。 Therefore, in the first embodiment, the heat dissipation capacity is improved by using the holder 100 in which the back surface of the LED 8 is opened without using the printed circuit board. That is, as shown in FIG. 2, a heat radiating member such as a heat sink 10 can come into direct contact with the back surface of the LED 8, and an improvement in heat radiating capacity can be expected as compared with using a printed circuit board for mounting the LED 8.

また、実施の形態１では、ＬＥＤ８の相対位置を決めて配光制御の精度を保持するために、ＬＥＤ８、第一位置決め部、ホルダ１００、第二位置決め部、及び光学レンズ２の相対位置を規定する。 Further, in the first embodiment, in order to determine the relative position of the LED 8 and maintain the accuracy of the light distribution control, the relative positions of the LED 8, the first positioning unit, the holder 100, the second positioning unit, and the optical lens 2 are defined. To do.

図５は、実施の形態１におけるホルダ１００とＬＥＤ８との位置決めを示す平面図である。第一位置決め部は、第一板状部材９の開口部９ｂの四方を囲むように設けられた突起９１，９２，９３，９４により構成される。ＬＥＤ載置座面９ｆに載置されたＬＥＤ８の上下左右の位置が、突起９１，９２，９３，９４により規制されることにより、ＬＥＤ８が、第一板状部材９上の光学レンズ２に対向する予定の位置に固定される。これにより、第一板状部材９とＬＥＤ８との位置決めがなされる。また、第二板状部材３には、この第一位置決め部に対向するように弾性部材７が設けられている。弾性部材７は、例えば、板金製である。第一板状部材９と第二板状部材３とが互いに密着した状態において、弾性部材７がＬＥＤ８の前面に当接し、第一板状部材９側に押圧する。図５では、弾性部材７の一端がＬＥＤ８前面の左側下端部に当接し、弾性部材７の他端がＬＥＤ８前面の右側下端部に当接するが、弾性部材７の形状及び当接位置は図５の例に限定されない。ＬＥＤ８が弾性部材７により第一板状部材９側に押圧されることで、ＬＥＤ８のホルダ１００からの脱落防止が図られる。さらに、第一板状部材９と第二板状部材３とが互いに密着した状態において、後述する第二給電部４の一端がＬＥＤ８の電極部８ｂに当接し、第一板状部材９側に押圧することにより、第二給電部４がＬＥＤ８の押圧部材としても機能する。これにより、ＬＥＤ８の脱落をより確実に防止できる。 FIG. 5 is a plan view showing the positioning of the holder 100 and the LED 8 in the first embodiment. The first positioning portion is composed of protrusions 91, 92, 93, 94 provided so as to surround the four sides of the opening 9b of the first plate-shaped member 9. The vertical and horizontal positions of the LED 8 mounted on the LED mounting seat surface 9f are regulated by the protrusions 91, 92, 93, 94, so that the LED 8 faces the optical lens 2 on the first plate-shaped member 9. It is fixed at the position where you plan to do it. As a result, the first plate-shaped member 9 and the LED 8 are positioned. Further, the second plate-shaped member 3 is provided with an elastic member 7 so as to face the first positioning portion. The elastic member 7 is made of sheet metal, for example. In a state where the first plate-shaped member 9 and the second plate-shaped member 3 are in close contact with each other, the elastic member 7 comes into contact with the front surface of the LED 8 and presses against the first plate-shaped member 9. In FIG. 5, one end of the elastic member 7 abuts on the lower left end of the front surface of the LED 8, and the other end of the elastic member 7 abuts on the lower right end of the front surface of the LED 8. It is not limited to the example of. By pressing the LED 8 toward the first plate-shaped member 9 by the elastic member 7, it is possible to prevent the LED 8 from falling off from the holder 100. Further, in a state where the first plate-shaped member 9 and the second plate-shaped member 3 are in close contact with each other, one end of the second feeding portion 4, which will be described later, comes into contact with the electrode portion 8b of the LED 8 and is moved to the first plate-shaped member 9 side. By pressing, the second feeding unit 4 also functions as a pressing member for the LED 8. This makes it possible to more reliably prevent the LED 8 from falling off.

図６は、実施の形態１におけるホルダ１００と光学レンズ２との位置決めを示す斜視図である。第二位置決め部は、光学レンズ２のホルダ１００に対向する側に設けられた凸形状部９５，９６と、ホルダ１００の光学レンズ２に対向する側に設けられ凸形状部９５，９６が係合する凹形状部９７，９８とにより構成される。光学レンズ２の凸形状部９５がホルダ１００の凹形状部９７に係合すると共に、光学レンズ２の凸形状部９６がホルダ１００の凹形状部９８に係合することにより、光学レンズ２とホルダ１００との位置決めがなされる。なお、凸形状部９５，９６がホルダ１００に、凹形状部９７，９８が光学レンズ２に設けられた構成であってもよい。 FIG. 6 is a perspective view showing the positioning of the holder 100 and the optical lens 2 in the first embodiment. The second positioning portion engages with the convex portions 95, 96 provided on the side of the optical lens 2 facing the holder 100 and the convex portions 95, 96 provided on the side of the holder 100 facing the optical lens 2. It is composed of concave shaped portions 97 and 98. The convex portion 95 of the optical lens 2 engages with the concave portion 97 of the holder 100, and the convex portion 96 of the optical lens 2 engages with the concave portion 98 of the holder 100, whereby the optical lens 2 and the holder Positioning with 100 is made. The convex portions 95 and 96 may be provided on the holder 100, and the concave portions 97 and 98 may be provided on the optical lens 2.

このように、第一位置決め部及び第二位置決め部により、ＬＥＤ８の固定にはんだ又は接着剤等を用いることなく、光学レンズ２とＬＥＤ８との相対位置が決まる。したがって、実施の形態１の車両用灯具は、放熱能力を向上させた上で、適切な配光制御も可能となる。 In this way, the first positioning portion and the second positioning portion determine the relative positions of the optical lens 2 and the LED 8 without using solder or an adhesive for fixing the LED 8. Therefore, the vehicle lamp of the first embodiment can improve the heat dissipation capacity and can also appropriately control the light distribution.

図７は、実施の形態１におけるホルダ１００の給電部を示す斜視図である。第一板状部材９の第二板状部材３に対向する側には、１個以上の第一給電部５が取り付けられている。また、第二板状部材３の第一板状部材９に対向する側には、１個以上の第二給電部４が取り付けられている。第一給電部５及び第二給電部４は、導体であり、ＬＥＤ８に給電する給電部を構成する。第一板状部材９と第二板状部材３とが互いに密着した状態において、第一給電部５の一端は、第二給電部４の一端に電気的に接続する。また、第二給電部４の他端は、ＬＥＤ８の電極部８ｂに電気的に接続する。第二給電部４は銅板等であって弾性を有するため、上述したように、第二給電部４の他端がＬＥＤ８の押圧部材としても機能する。第一板状部材９の縁部の一部が突出した形状であり、この突出した部分に第一給電部５の他端が延伸することにより、コネクタ部９ｃを構成している。コネクタ部９ｃが、外部給電コネクタ６に差し込まれることにより、第一給電部５の他端が、図示しない電源と電気的に接続する。第一給電部５の他端が外部給電コネクタ６まで延伸した形状であるため、第一給電部５と第二給電部４との接触部から外部給電コネクタ６までの導体パターンを設ける必要がなく、プリント基板が不要となる。また、第一給電部５の他端は、外部給電コネクタ６に接続可能な形状となっているため、外部給電コネクタ６に接続するための別部品のコネクタをホルダ１００に取り付ける必要がない。 FIG. 7 is a perspective view showing a feeding portion of the holder 100 according to the first embodiment. One or more first feeding portions 5 are attached to the side of the first plate-shaped member 9 facing the second plate-shaped member 3. Further, one or more second feeding portions 4 are attached to the side of the second plate-shaped member 3 facing the first plate-shaped member 9. The first power supply unit 5 and the second power supply unit 4 are conductors and form a power supply unit that supplies power to the LED 8. In a state where the first plate-shaped member 9 and the second plate-shaped member 3 are in close contact with each other, one end of the first feeding portion 5 is electrically connected to one end of the second feeding portion 4. Further, the other end of the second feeding portion 4 is electrically connected to the electrode portion 8b of the LED 8. Since the second feeding portion 4 is a copper plate or the like and has elasticity, the other end of the second feeding portion 4 also functions as a pressing member for the LED 8 as described above. A part of the edge portion of the first plate-shaped member 9 has a protruding shape, and the other end of the first feeding portion 5 extends to the protruding portion to form the connector portion 9c. By inserting the connector portion 9c into the external power supply connector 6, the other end of the first power supply unit 5 is electrically connected to a power source (not shown). Since the other end of the first power feeding portion 5 has a shape extending to the external feeding connector 6, it is not necessary to provide a conductor pattern from the contact portion between the first feeding portion 5 and the second feeding portion 4 to the external feeding connector 6. , No need for printed circuit board. Further, since the other end of the first power feeding unit 5 has a shape that can be connected to the external power feeding connector 6, it is not necessary to attach a connector of another component for connecting to the external power feeding connector 6 to the holder 100.

以上のように、実施の形態１に係る車両用灯具は、ＬＥＤ８と、ホルダ１００と、放熱部材と、光学レンズ２と、第一位置決め部と、第二位置決め部とを備える。ＬＥＤ８は、前面に出射部８ａを有する。ホルダ１００は、ＬＥＤ８の背面を開放する開口部９ｂが設けられたＬＥＤ載置部９ａと、第一給電部５及び第二給電部４で構成されてＬＥＤ８に給電する給電部とを有する。ヒートシンク１０等で構成される放熱部材は、開口部９ｂを通じてＬＥＤ８に直接接触する。光学レンズ２は、ＬＥＤ８から出射される光を直接受光して当該光を車両前方に投射する。突起９１，９２，９３，９４で構成される第一位置決め部は、ＬＥＤ８とホルダ１００との位置決めを行う。凸形状部９５，９６及び凹形状部９７，９８で構成される第二位置決め部は、ホルダ１００と光学レンズ２との位置決めを行う。このように、ＬＥＤ８と放熱部材とが直接接触することにより、放熱能力が向上する。また、ホルダ１００が有する２つの位置決め部により、光学レンズ２とＬＥＤ８との相対位置が決まる。したがって、ＬＥＤ８の光を光学レンズ２が直接受光して車両前方に投射する投射タイプの車両用灯具において、放熱能力の向上と適切な配光制御の両立を図ることができる。 As described above, the vehicle lamp according to the first embodiment includes an LED 8, a holder 100, a heat radiating member, an optical lens 2, a first positioning portion, and a second positioning portion. The LED 8 has an exit portion 8a on the front surface. The holder 100 has an LED mounting portion 9a provided with an opening 9b for opening the back surface of the LED 8, and a feeding portion composed of a first feeding portion 5 and a second feeding portion 4 to supply power to the LED 8. The heat radiating member composed of the heat sink 10 and the like comes into direct contact with the LED 8 through the opening 9b. The optical lens 2 directly receives the light emitted from the LED 8 and projects the light in front of the vehicle. The first positioning unit composed of the protrusions 91, 92, 93, 94 positions the LED 8 and the holder 100. The second positioning portion composed of the convex portions 95, 96 and the concave portions 97, 98 positions the holder 100 and the optical lens 2. In this way, the direct contact between the LED 8 and the heat radiating member improves the heat radiating capacity. Further, the relative positions of the optical lens 2 and the LED 8 are determined by the two positioning portions of the holder 100. Therefore, in a projection type vehicle lighting fixture in which the light of the LED 8 is directly received by the optical lens 2 and projected to the front of the vehicle, it is possible to achieve both improvement of heat dissipation capacity and appropriate light distribution control.

また、実施の形態１のホルダ１００は、一対の板状部材である第一板状部材９と第二板状部材３とからなる。第一板状部材９は、電源に電気的に接続される第一給電部５を有し、第二板状部材３は、ＬＥＤ８の電極部８ｂに電気的に接続される第二給電部４を有する。第一板状部材９と第二板状部材３とが互いに密着した状態において第一給電部５と第二給電部４とが接触すると共に第二給電部４とＬＥＤ８の電極部８ｂとが接触して給電部を構成する。この構成により、プリント基板を用いることなく、ＬＥＤ８のホルダ１００を構成することができる。 Further, the holder 100 of the first embodiment is composed of a pair of plate-shaped members, a first plate-shaped member 9 and a second plate-shaped member 3. The first plate-shaped member 9 has a first feeding portion 5 electrically connected to a power source, and the second plate-shaped member 3 has a second feeding portion 4 electrically connected to an electrode portion 8b of the LED 8. Have. In a state where the first plate-shaped member 9 and the second plate-shaped member 3 are in close contact with each other, the first feeding portion 5 and the second feeding portion 4 come into contact with each other, and the second feeding portion 4 and the electrode portion 8b of the LED 8 come into contact with each other. To configure the power supply unit. With this configuration, the holder 100 of the LED 8 can be configured without using a printed circuit board.

また、実施の形態１の第一給電部５の一端は、ホルダ１００に一体形成され電源に電気的に接続されるコネクタ部９ｃを構成する。ホルダ１００が、外部給電コネクタ６に接続されるコネクタ部９ｃを兼ねるので、別部品としてのコネクタが不要である。 Further, one end of the first power feeding portion 5 of the first embodiment constitutes a connector portion 9c integrally formed with the holder 100 and electrically connected to the power supply. Since the holder 100 also serves as the connector portion 9c connected to the external power supply connector 6, a connector as a separate component is unnecessary.

また、実施の形態１のホルダ１００は、一対の板状部材である第一板状部材９と第二板状部材３とが互いに密着した状態においてＬＥＤ８を押圧する弾性部材７を有する。この構成により、ＬＥＤ８のホルダ１００からの脱落を防止できる。 Further, the holder 100 of the first embodiment has an elastic member 7 that presses the LED 8 in a state where the first plate-shaped member 9 and the second plate-shaped member 3 which are a pair of plate-shaped members are in close contact with each other. With this configuration, it is possible to prevent the LED 8 from falling off from the holder 100.

なお、一対の板状部材である第一板状部材９及び第二板状部材３は、１枚で構成されてもよい。図８は、実施の形態１におけるホルダ１００の変形例であるホルダ１００ａを示す斜視図であり、図８Ａは折り曲げ前の状態、図８Ｂは折り曲げ後の状態を示す。図８Ａに示されるホルダ１００ａは、第一板状部材９と第二板状部材３とが１個以上の折り曲げ部１１でつながった形状の樹脂成形品である。折り曲げ部１１が折り曲げられ、第二板状部材３が矢印に示すように第一板状部材９の方向へ折りたたまれることにより、図８Ｂに示されるように第二板状部材３と第一板状部材９とが互いに密着した状態となる。この構成の場合には、ホルダ１００ａを構成する部品点数が減るため、製造及び部品管理が容易になる。また、第一板状部材９と第二板状部材３とを組み付ける方向の間違いを防止できる。また、ホルダ１００ａを樹脂成形する金型が１つでよく、コスト低減が可能である。 The first plate-shaped member 9 and the second plate-shaped member 3 which are a pair of plate-shaped members may be composed of one piece. FIG. 8 is a perspective view showing a holder 100a which is a modification of the holder 100 in the first embodiment, FIG. 8A shows a state before bending, and FIG. 8B shows a state after bending. The holder 100a shown in FIG. 8A is a resin molded product having a shape in which the first plate-shaped member 9 and the second plate-shaped member 3 are connected by one or more bent portions 11. The bent portion 11 is bent, and the second plate-shaped member 3 is folded in the direction of the first plate-shaped member 9 as shown by an arrow, so that the second plate-shaped member 3 and the first plate are folded as shown in FIG. 8B. The shape members 9 are in close contact with each other. In the case of this configuration, since the number of parts constituting the holder 100a is reduced, manufacturing and parts management become easy. Further, it is possible to prevent an error in the direction in which the first plate-shaped member 9 and the second plate-shaped member 3 are assembled. Further, only one mold is required to mold the holder 100a with resin, and the cost can be reduced.

本発明はその発明の範囲内において、実施の形態の任意の構成要素の変形、又は実施の形態の任意の構成要素の省略が可能である。 Within the scope of the present invention, it is possible to modify any component of the embodiment or omit any component of the embodiment.

この発明に係る車両用灯具は、放熱能力の向上と適切な配光制御の両立を図るようにしたので、ヘッドランプ等の車両用灯具に用いるのに適している。 The vehicle lighting equipment according to the present invention is suitable for use in vehicle lighting equipment such as headlamps because it is designed to achieve both improvement of heat dissipation capacity and appropriate light distribution control.

１ 締結部材、１ａ 貫通穴、１ｂ 締結穴、２ 光学レンズ、３ 第二板状部材、３ａ 開口部、３ｂ 凹形状部、４ 第二給電部（給電部）、５ 第一給電部（給電部）、６ 外部給電コネクタ、７ 弾性部材、８ ＬＥＤ、８ａ 出射部、８ｂ 電極部、９ 第一板状部材、９ａ ＬＥＤ載置部、９ｂ 開口部、９ｃ コネクタ部、９ｄ 凸形状部、９ｅ 爪、９ｆ ＬＥＤ載置座面、１０ ヒートシンク（放熱部材）、１１ 折り曲げ部、９１，９２，９３，９４ 突起（第一位置決め部）、９５，９６ 凸形状部（第二位置決め部）、９７，９８ 凹形状部（第二位置決め部）、１００，１００ａ ホルダ。 1 Fastening member, 1a through hole, 1b fastening hole, 2 optical lens, 3 second plate-shaped member, 3a opening, 3b concave shape, 4 second feeding section (feeding section), 5 first feeding section (feeding section) ), 6 External power supply connector, 7 Elastic member, 8 LED, 8a Exit part, 8b Electrode part, 9 First plate-shaped member, 9a LED mounting part, 9b opening, 9c connector part, 9d convex part, 9e claw , 9f LED mounting seat surface, 10 heat sink (heat dissipation member), 11 bent part, 91, 92, 93, 94 protrusion (first positioning part), 95, 96 convex shape part (second positioning part), 97, 98 Concave shape part (second positioning part), 100,100a holder.

Claims (5)

前面に出射部を有するＬＥＤと、
前記ＬＥＤの背面を開放する開口部が設けられたＬＥＤ載置部と前記ＬＥＤに給電する給電部とを有するホルダと、
前記開口部を通じて前記ＬＥＤに直接接触する放熱部材と、
前記ＬＥＤから出射される光を直接受光して当該光を車両前方に投射する光学レンズと、
前記ＬＥＤと前記ホルダとの位置決めを行う第一位置決め部と、
前記ホルダと前記光学レンズとの位置決めを行う第二位置決め部とを備える車両用灯具。An LED with an exit on the front and
A holder having an LED mounting portion provided with an opening for opening the back surface of the LED and a feeding portion for supplying power to the LED.
A heat radiating member that comes into direct contact with the LED through the opening,
An optical lens that directly receives the light emitted from the LED and projects the light in front of the vehicle.
A first positioning unit that positions the LED and the holder,
A vehicle lamp including a second positioning portion for positioning the holder and the optical lens. 前記ホルダは一対の板状部材からなり、前記一対の板状部材のうちの一方は電源に電気的に接続される第一給電部を有し、前記一対の板状部材のうちのもう一方は前記ＬＥＤの電極部に電気的に接続される第二給電部を有し、前記一対の板状部材が互いに密着した状態において前記第一給電部と前記第二給電部とが接触すると共に前記第二給電部と前記ＬＥＤの電極部とが接触して前記給電部を構成することを特徴とする請求項１記載の車両用灯具。 The holder is composed of a pair of plate-shaped members, one of the pair of plate-shaped members has a first feeding portion electrically connected to a power source, and the other of the pair of plate-shaped members is. The first feeding portion and the second feeding portion come into contact with each other in a state where the pair of plate-shaped members are in close contact with each other and have the second feeding portion electrically connected to the electrode portion of the LED. (Ii) The vehicle lamp according to claim 1, wherein the power feeding unit and the electrode portion of the LED come into contact with each other to form the power feeding unit. 前記第一給電部の一端は、前記ホルダに一体形成され前記電源に電気的に接続されるコネクタ部を構成することを特徴とする請求項２記載の車両用灯具。 The vehicle lamp according to claim 2, wherein one end of the first power feeding portion constitutes a connector portion integrally formed with the holder and electrically connected to the power supply. 前記ホルダは、前記一対の板状部材が互いに密着した状態において前記ＬＥＤを押圧する弾性部材を有することを特徴とする請求項２記載の車両用灯具。 The vehicle lamp according to claim 2, wherein the holder has an elastic member that presses the LED in a state where the pair of plate-shaped members are in close contact with each other. 前記一対の板状部材は１枚で構成されており、前記１枚の板状部材が折りたたまれたことにより前記一対の板状部材が互いに密着した状態となることを特徴とする請求項２記載の車両用灯具。 The second aspect of claim 2, wherein the pair of plate-shaped members is composed of one piece, and the pair of plate-shaped members are brought into close contact with each other by being folded. Vehicle lighting fixtures.
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Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2008186796A (en) * 2007-01-31 2008-08-14 Ichikoh Ind Ltd Fixing structure of light emitting diode
JP2009518788A (en) * 2005-12-06 2009-05-07 アーノルド・ウント・リヒター・シネ・テヒニク・ゲーエムベーハー・ウント・コンパニ・ベトリーブス・カーゲー Two-dimensional lighting device
JP2010080071A (en) * 2008-09-24 2010-04-08 Ichikoh Ind Ltd Lighting fixture for vehicle
JP2012238501A (en) * 2011-05-12 2012-12-06 Koito Mfg Co Ltd Vehicular lamp fitting
JP2014197550A (en) * 2014-06-18 2014-10-16 株式会社小糸製作所 Attachment for fixing light source
JP2016149373A (en) * 2016-04-13 2016-08-18 株式会社小糸製作所 Lighting fixture unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009518788A (en) * 2005-12-06 2009-05-07 アーノルド・ウント・リヒター・シネ・テヒニク・ゲーエムベーハー・ウント・コンパニ・ベトリーブス・カーゲー Two-dimensional lighting device
JP2008186796A (en) * 2007-01-31 2008-08-14 Ichikoh Ind Ltd Fixing structure of light emitting diode
JP2010080071A (en) * 2008-09-24 2010-04-08 Ichikoh Ind Ltd Lighting fixture for vehicle
JP2012238501A (en) * 2011-05-12 2012-12-06 Koito Mfg Co Ltd Vehicular lamp fitting
JP2014197550A (en) * 2014-06-18 2014-10-16 株式会社小糸製作所 Attachment for fixing light source
JP2016149373A (en) * 2016-04-13 2016-08-18 株式会社小糸製作所 Lighting fixture unit

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