JP2006173031A - Lighting unit for vehicle - Google Patents

Lighting unit for vehicle Download PDF

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Publication number
JP2006173031A
JP2006173031A JP2004367052A JP2004367052A JP2006173031A JP 2006173031 A JP2006173031 A JP 2006173031A JP 2004367052 A JP2004367052 A JP 2004367052A JP 2004367052 A JP2004367052 A JP 2004367052A JP 2006173031 A JP2006173031 A JP 2006173031A
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Prior art keywords
light source
light
illumination light
reflecting mirror
illumination
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JP2004367052A
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Japanese (ja)
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Keiichi Nagano
恵一 永野
Yuichi Takahashi
祐一 高橋
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2004367052A priority Critical patent/JP2006173031A/en
Publication of JP2006173031A publication Critical patent/JP2006173031A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting unit for vehicles capable of efficiently irradiating light by suppressing a loss of illumination light as well as shielding direct light emitted from a lamp. <P>SOLUTION: This lighting unit for vehicles comprises: a reflecting mirror 1 which reflects illumination light emitted from a light source 2 for illuminating forward part of a vehicle; a reflector 5 which reflects again the reflected illumination light on the reflecting mirror 1 forward part of a vehicle. Further, it has a translucency holding member 3 which holds the reflecting mirror 1 at a predetermined distance with respect to the light source 2, comprising a incident part 3a from which an illumination light emitted from the light source 2 enters, and an exiting part 3c from which an illumination light reflected on the reflecting mirror 1 exits. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、発光ダイオードなどの光源を用いた車両用照明装置に関し、例えば、テールランプ、ストップランプ、ターンシグナルランプなど、主として信号用に使用される車両用照明装置に好適である。   The present invention relates to a vehicular lighting device using a light source such as a light emitting diode, and is suitable for a vehicular lighting device used mainly for signals, such as a tail lamp, a stop lamp, and a turn signal lamp.

従来、凹形状の反射面を有する反射部材の略中央に発光部分を配置してなる光源を設けて、照明光を効率よく反射させて照明向きを方向付けする車両用照明装置がある。かかる車両用照明装置には、例えば、光源からの直接光を遮蔽して他の車両運転者等に眩惑を生じさせないためのフードが設けられるものがある（例えば、特許文献１参照）。
特開２０００−３０６４０５号公報 2. Description of the Related Art Conventionally, there is a vehicular illuminating device that provides a light source having a light emitting portion disposed substantially at the center of a reflecting member having a concave reflecting surface and efficiently reflects illumination light to direct the illumination direction. Such vehicle lighting devices include, for example, a hood that shields direct light from a light source and prevents other vehicle drivers from being dazzled (see, for example, Patent Document 1).
JP 2000-306405 A

上述した構成において、前記フードを設けたことで、このフードをある程度の振動に耐えうる強度にて光源の前方側に保持するための保持部材が必要となる。しかしながら、前記光源の発光部分から反射部材に達するまでに照明光の一部が、この保持部材によって遮蔽されるなど、車両用照明装置が暗いものとなってしまうため問題となっていた。そのため、フードを強度良く保持しつつ効率のよい照明を行うことが課題となっていた。   In the configuration described above, the provision of the hood necessitates a holding member for holding the hood on the front side of the light source with sufficient strength to withstand a certain amount of vibration. However, a part of the illumination light is blocked by the holding member before reaching the reflecting member from the light emitting portion of the light source, which causes a problem because the vehicle illumination device becomes dark. Therefore, it has been a problem to perform efficient illumination while holding the hood with high strength.

そこで本発明の目的とするところは、上述した課題について着目してなされたものであって、光源からの直接光を遮蔽するとともに、照明光の損失を抑制して効率よく照明できる車両用照明装置を提供することにある。   Therefore, an object of the present invention is made by paying attention to the above-described problems, and is a vehicle illumination device that can efficiently illuminate while blocking direct light from a light source and suppressing loss of illumination light. Is to provide.

本発明の車両用照明装置は、請求項１に記載したように、前方側を照明する光源からの照明光を反射する第１の反射部材と、前記第１の反射部材から反射された照明光を再び前方側に反射させる第２の反射部材と、を備えてなる車両用照明装置であって、前記第１の反射部材を前記光源に対して所定の位置に保持するとともに、前記光源からの照明光を入射する入射部と、前記第１の反射部材にて反射させた照明光を出射する出射部と、設けてなる透光性の保持部材を備えてなることを特徴とするものである。   As described in claim 1, the vehicle lighting device according to the present invention includes a first reflecting member that reflects illumination light from a light source that illuminates the front side, and illumination light reflected from the first reflecting member. A second reflecting member that reflects the light to the front side again, and holds the first reflecting member at a predetermined position with respect to the light source, and from the light source. It is characterized by comprising an incident part for incident illumination light, an emitting part for emitting illumination light reflected by the first reflecting member, and a translucent holding member provided. .

また、請求項２に記載したように、請求項１に記載の車両用照明装置において、前記第１の反射部材は、前記光源から照射される照明光を反射する凸状の双曲面を有してなることを特徴とするものである。   Moreover, as described in claim 2, in the vehicle lighting device according to claim 1, the first reflecting member has a convex hyperboloid that reflects illumination light emitted from the light source. It is characterized by.

また、請求項３に記載したように、請求項１または請求項２に記載の車両用照明装置において、前記保持部材の前記入射部または前記出射部は、レンズ形状にて形成されてなることを特徴とするものである。   Further, as described in claim 3, in the vehicle lighting device according to claim 1 or 2, the incident portion or the emitting portion of the holding member is formed in a lens shape. It is a feature.

また、請求項４に記載したように、請求項１乃至請求項３の何れかに記載の車両用照明装置において、前記第２の反射部材の後方側には、前記光源の熱を放熱するための放熱部材を備えてなることを特徴とするものである。   Further, as described in claim 4, in the vehicle lighting device according to any one of claims 1 to 3, the heat of the light source is radiated to the rear side of the second reflecting member. The heat radiation member is provided.

本発明は、発光ダイオードからなる光源を用いた車両用照明装置に関し、光源からの直接光を遮蔽するとともに、照明光の損失を抑制して効率よく照明できる車両用照明装置を提供できる。   The present invention relates to a vehicular illuminating device using a light source composed of a light emitting diode, and can provide a vehicular illuminating device that can efficiently illuminate while shielding direct light from the light source and suppressing loss of illumination light.

以下、実施するための形態として本発明を、例えば、テールランプ、ストップランプ、ターンシグナルランプなど、主として信号用に使用され、車両の外装に搭載される車両用照明装置に適用したものを例に挙げ、添付図面を用いて説明する。   Hereinafter, as an embodiment for carrying out the present invention, for example, a tail lamp, a stop lamp, a turn signal lamp, and the like, which are mainly used for signals and applied to a vehicle lighting device mounted on the exterior of a vehicle, are taken as an example. This will be described with reference to the attached drawings.

図１は、車両用照明装置Ａを示す断面図であり、反射鏡（第１の反射部材）１と、光源２と、保持部材３と、ケース４と、リフレクタ（第２の反射部材）５と、アウターレンズ６と、アルミ基板７と、ヒートシンク（放熱部材）８と、によって主に構成される。   FIG. 1 is a cross-sectional view showing a vehicular illumination device A, which includes a reflecting mirror (first reflecting member) 1, a light source 2, a holding member 3, a case 4, and a reflector (second reflecting member) 5. And an outer lens 6, an aluminum substrate 7, and a heat sink (heat radiating member) 8.

反射鏡１は、光源２から前方側（車両用照明装置Ａの照明方向側）に照射されたとき以上に照射角が拡がる状態で後方あるいは側方側に反射が行われるようにするものであり、凸状の連続曲面を有する略円錐形状にて形成されるとともに、表面がアルミニウムあるいはクロム等の金属膜にてコーティングされて鏡面となっている。なお、この場合、反射鏡１は、後述する保持部材３に形成される凹部にコーティングを施すことによって形成され、回転双曲面形状からなる回転対称の凸状反射面１ａを有するものが適用される。   The reflecting mirror 1 is configured to perform reflection on the rear side or the side side in a state where the irradiation angle is wider than when the light source 2 irradiates the front side (illumination direction side of the vehicle lighting device A). Further, it is formed in a substantially conical shape having a convex continuous curved surface, and the surface is coated with a metal film such as aluminum or chromium to become a mirror surface. In this case, the reflecting mirror 1 is formed by coating a concave portion formed in the holding member 3 to be described later, and has a rotationally symmetric convex reflecting surface 1a having a rotational hyperboloid shape. .

光源２は、主要な照明光成分が反射鏡１の凸状反射面１ａへ到達するような仕様や配設位置が選択され、この場合、照射角（ここでは、光度がピーク値から半減する角度）が４０〜５０°程度の発光ダイオードチップが適用でき、反射鏡１の凸状反射面１ａに対向するとともに、この凸状反射面１ａの回転軸上に発光部が位置するように備えられる。また、光源２は、その光軸が前記回転軸と重なり反射鏡１の方向（前方側）へ向けて照射されるように、アルミ基板７上に備えられる。   The light source 2 is selected so that the main illumination light component reaches the convex reflecting surface 1a of the reflecting mirror 1, and in this case, the illumination angle (here, the angle at which the luminous intensity is halved from the peak value) is selected. ) Is applicable to a light emitting diode chip of about 40 to 50 °, and is provided so as to face the convex reflecting surface 1a of the reflecting mirror 1 and to position the light emitting portion on the rotation axis of the convex reflecting surface 1a. The light source 2 is provided on the aluminum substrate 7 so that the optical axis overlaps the rotation axis and is irradiated toward the reflecting mirror 1 (front side).

保持部材３は、透明な合成樹脂材が適用でき、光源２と反射鏡１との間に備えられる。保持部材３は、光源２と対向する箇所に光源２からの照明光を入射するとともに所定の屈折を行うレンズ形状の入射部３ａと、反射鏡１の凸状反射面に対応する形状にて形成され反射鏡１を保持する凹部３ｂと、入射部３ａにて入射してから凹部３ｂに設けられる反射鏡１によって拡散して反射された照明光を所定の屈折をさせて側方に出射するレンズ形状の出射部３ｃと、ケース４に組み付けるためのケース取付部３ｄと、を設けている。なお、入射部３ａあるいは出射部３ｃには所定の屈折を行うレンズ形状にて設けてなるが、光源２の照射角、光源２と反射鏡１との距離、反射鏡１やリフレクタ５の形状、保持部材３の屈折率などによって、適宜な屈折を行う形状にて形成できる。   The holding member 3 can be made of a transparent synthetic resin material and is provided between the light source 2 and the reflecting mirror 1. The holding member 3 is formed in a shape corresponding to the convex reflection surface of the reflecting mirror 1 and the lens-shaped incident portion 3a that makes the illumination light from the light source 2 enter the portion facing the light source 2 and performs predetermined refraction. A concave portion 3b that holds the reflecting mirror 1, and a lens that diffracts and reflects the illumination light incident on the incident portion 3a and then reflected by the reflecting mirror 1 provided in the concave portion 3b to be emitted sideways. A shape emitting part 3 c and a case attaching part 3 d for assembling to the case 4 are provided. The incident part 3a or the emission part 3c is provided with a lens shape that performs predetermined refraction, but the irradiation angle of the light source 2, the distance between the light source 2 and the reflecting mirror 1, the shape of the reflecting mirror 1 and the reflector 5, Depending on the refractive index of the holding member 3 and the like, it can be formed in a shape that performs appropriate refraction.

ケース４は、遮光性の合成樹脂材を適用でき、保持部材３と、アルミ基板７と、ヒートシンク８と、を接着材の塗布やビス締めなど適宜の取付手段を用いて組み付けるものである。   The case 4 can be applied with a light-shielding synthetic resin material, and the holding member 3, the aluminum substrate 7, and the heat sink 8 are assembled using appropriate attachment means such as application of adhesive or screw tightening.

リフレクタ５は、反射鏡１を囲うように設けられる凹状反射面５ａを有し、反射鏡１からの照明光を前方側に設けられるアウターレンズ６側へ反射させるものである。リフレクタ５の凹状反射面５ａは、この場合、反射鏡１の凸状反射面１ａの回転軸と同じ回転軸にて形成される回転放物面形状に凹面が形成された合成樹脂部材に、アルミニウムあるいはクロム等の金属膜にてコーティングされて鏡面となっており、反射鏡１の凸状反射面１ａと対向するように設けられる。なお、リフレクタ５の底部（中央部）には、光源２や保持部材３，反射鏡１を設けるための孔５ｂが形成されている。   The reflector 5 has a concave reflecting surface 5a provided so as to surround the reflecting mirror 1, and reflects the illumination light from the reflecting mirror 1 toward the outer lens 6 provided on the front side. In this case, the concave reflecting surface 5a of the reflector 5 is formed of aluminum on a synthetic resin member in which a concave surface is formed in the shape of a rotating paraboloid formed by the same rotation axis as that of the convex reflecting surface 1a of the reflecting mirror 1. Or it coats with metal films, such as chromium, and becomes a mirror surface, and it is provided so that the convex-shaped reflective surface 1a of the reflective mirror 1 may be opposed. In addition, a hole 5 b for providing the light source 2, the holding member 3, and the reflecting mirror 1 is formed in the bottom (center) of the reflector 5.

アウターレンズ６は、透光性の合成樹脂材からなり、リフレクタ５の開口部分を塞ぐように設けられ、リフレクタ５にて反射された照明光を透過することによって、車両外へ照明光を照射するものである。アウターレンズ６は、有色の顔料を含ませたり、フレネルカットやレンズ部を施すなどして、照明光を多少方向付けすることができる。   The outer lens 6 is made of a light-transmitting synthetic resin material, is provided so as to close the opening of the reflector 5, and irradiates the illumination light outside the vehicle by transmitting the illumination light reflected by the reflector 5. Is. The outer lens 6 can direct illumination light to some extent by including a colored pigment or by applying a Fresnel cut or a lens portion.

アルミ基板７は、光源２を搭載するとともに、この光源２への電気供給を行うための図示しない配線や、抵抗などの素子、外部機器へのコネクタなどを設けてなる。また、アルミ基板７は、光源２からの発熱を光源２の後方側に設けられるヒートシンク８へ効率よく伝達することができる。   The aluminum substrate 7 is provided with a light source 2 and wiring (not shown) for supplying electricity to the light source 2, elements such as resistors, connectors to external devices, and the like. Further, the aluminum substrate 7 can efficiently transmit the heat generated from the light source 2 to the heat sink 8 provided on the rear side of the light source 2.

ヒートシンク８は、この場合、図示しないシリコーン等からなる熱伝導シートなどを介してアルミ基板７とともにケース４に支持され、アルミ基板７へ伝わる熱を放熱するためのフィン８ａを備えている。なお、ヒートシンク８は、リフレクタ５の後方側に設けられ、光源２から発せられてアウターレンズ６を透過するまでの照明光の光路の妨げとならない箇所で放熱することができる。   In this case, the heat sink 8 is supported by the case 4 together with the aluminum substrate 7 via a heat conductive sheet made of silicone or the like (not shown), and includes fins 8 a for radiating heat transmitted to the aluminum substrate 7. The heat sink 8 is provided on the rear side of the reflector 5 and can dissipate heat at a location that does not interfere with the optical path of illumination light emitted from the light source 2 and transmitted through the outer lens 6.

かかる車両用照明装置は、前方側を照明する光源２からの照明光を反射する反射鏡１と、反射鏡１から反射された照明光を再び前方側に反射させるリフレクタ５と、を備えてなる車両用照明装置であって、反射鏡１を光源２に対して所定の位置に保持するとともに、光源２からの照明光を入射する入射部３ａと、反射鏡１にて反射させた照明光を出射する出射部３ｃと、設けてなる透光性の保持部材３を備えてなる。   Such an illumination device for a vehicle includes a reflecting mirror 1 that reflects illumination light from a light source 2 that illuminates the front side, and a reflector 5 that reflects the illumination light reflected from the reflecting mirror 1 to the front side again. An illumination device for a vehicle, which holds the reflecting mirror 1 at a predetermined position with respect to the light source 2, and incident light 3 reflected by the reflecting mirror 1 and the incident portion 3 a that receives the illumination light from the light source 2. The light emission part 3c which radiates | emits, and the translucent holding member 3 provided are provided.

したがって、光源２からリフレクタ５への直接光を反射鏡１にて遮蔽するとともに拡散させつつリフレクタ５側へ反射させ、照明光の損失を抑制して効率よく照明できる車両用照明装置を提供するができる。また、光源２の照射角が大きくなくとも、アウターレンズ６の広範囲に照明光を届けることが可能となる薄型の車両用照明装置となる。また、照明光を遮蔽することなく、反射鏡１を確実に保持できるため、振動等が起こりうる車両への搭載に適した照明装置となる。   Therefore, although the direct light from the light source 2 to the reflector 5 is shielded by the reflecting mirror 1 and reflected to the reflector 5 side while being diffused, a vehicle illumination device capable of efficiently illuminating while suppressing loss of illumination light is provided. it can. Moreover, even if the irradiation angle of the light source 2 is not large, it becomes a thin vehicle illumination device that can deliver illumination light over a wide range of the outer lens 6. Further, since the reflecting mirror 1 can be reliably held without shielding the illumination light, the illumination device is suitable for mounting on a vehicle where vibration or the like may occur.

また、反射鏡１は、光源２から照射される照明光を反射する凸状の双曲面を有してなることによって、略均一な光量を効率よく広範囲に拡散することができる。   Further, the reflecting mirror 1 has a convex hyperboloid that reflects the illumination light emitted from the light source 2, so that a substantially uniform amount of light can be efficiently diffused over a wide range.

また、保持部材３の入射部３ａまたは出射部３ｃは、レンズ形状にて形成されてなることによって、リフレクタ５やアウターレンズ６の形状に応じて、光量の損失を抑えつつ照明光の光路を方向付けすることが可能となるため、効率よく照明することができる。   In addition, the incident portion 3a or the emission portion 3c of the holding member 3 is formed in a lens shape, so that the direction of the optical path of the illumination light is suppressed while suppressing the loss of light amount according to the shape of the reflector 5 or the outer lens 6. Since it can be attached, it can illuminate efficiently.

本発明の実施の形態における車両用照明装置Ａを断面にて示す図。The figure which shows the illuminating device A for vehicles in embodiment of this invention in a cross section.

符号の説明Explanation of symbols

１ 反射鏡（第１の反射部材）
２ 光源
３ 保持部材
３ａ 入射部
３ｃ 出射部
５ リフレクタ（第２の反射部材）
８ ヒートシンク（放熱部材）
1 reflecting mirror (first reflecting member)
2 Light source 3 Holding member 3a Incident part 3c Output part 5 Reflector (second reflecting member)
8 Heat sink (heat dissipation member)

Claims (4)

前方側を照明する光源からの照明光を反射する第１の反射部材と、前記第１の反射部材から反射された照明光を再び前方側に反射させる第２の反射部材と、を備えてなる車両用照明装置であって、
前記第１の反射部材を前記光源に対して所定の位置に保持するとともに、前記光源からの照明光を入射する入射部と、前記第１の反射部材にて反射させた照明光を出射する出射部と、設けてなる透光性の保持部材を備えてなることを特徴とする車両用照明装置。 A first reflecting member that reflects illumination light from a light source that illuminates the front side; and a second reflecting member that reflects the illumination light reflected from the first reflecting member to the front side again. A vehicle lighting device comprising:
The first reflecting member is held at a predetermined position with respect to the light source, and an incident portion that receives illumination light from the light source and an emission that emits the illumination light reflected by the first reflecting member And a light-transmitting holding member provided. 前記第１の反射部材は、前記光源から照射される照明光を反射する凸状の双曲面を有してなることを特徴とする請求項１に記載の車両用照明装置。   The vehicle lighting device according to claim 1, wherein the first reflecting member has a convex hyperboloid that reflects illumination light emitted from the light source. 前記保持部材の前記入射部または前記出射部は、レンズ形状にて形成されてなることを特徴とする請求項１または請求項２に記載の車両用照明装置。   The vehicle illumination device according to claim 1, wherein the incident portion or the emission portion of the holding member is formed in a lens shape. 前記第２の反射部材の後方側には、前記光源の熱を放熱するための放熱部材を備えてなることを特徴とする請求項１乃至請求項３の何れかに記載の車両用照明装置。
4. The vehicular lighting device according to claim 1, further comprising a heat dissipating member for dissipating heat of the light source on a rear side of the second reflecting member. 5.
JP2004367052A 2004-12-20 2004-12-20 Lighting unit for vehicle Pending JP2006173031A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008084699A (en) * 2006-09-27 2008-04-10 Stanley Electric Co Ltd Lighting fixture unit
JP2012038698A (en) * 2010-07-14 2012-02-23 Ichikoh Ind Ltd Light source unit of semiconductor type light source for vehicular lamp and vehicular lamp
CN104728723A (en) * 2013-12-20 2015-06-24 东芝照明技术株式会社 Lighting device and lighting device set
JP2016047661A (en) * 2014-08-27 2016-04-07 矢崎総業株式会社 Vehicular lighting system
KR101683625B1 (en) 2015-11-12 2016-12-08 (주)프리모 Automotive lamp using indirect lighting type
DE102016202563A1 (en) * 2016-02-19 2017-08-24 Osram Gmbh RETROFIT LAMP AND VEHICLE HEADLAMP WITH RETROFIT LAMP

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008084699A (en) * 2006-09-27 2008-04-10 Stanley Electric Co Ltd Lighting fixture unit
JP2012038698A (en) * 2010-07-14 2012-02-23 Ichikoh Ind Ltd Light source unit of semiconductor type light source for vehicular lamp and vehicular lamp
CN104728723A (en) * 2013-12-20 2015-06-24 东芝照明技术株式会社 Lighting device and lighting device set
JP2016047661A (en) * 2014-08-27 2016-04-07 矢崎総業株式会社 Vehicular lighting system
KR101683625B1 (en) 2015-11-12 2016-12-08 (주)프리모 Automotive lamp using indirect lighting type
DE102016202563A1 (en) * 2016-02-19 2017-08-24 Osram Gmbh RETROFIT LAMP AND VEHICLE HEADLAMP WITH RETROFIT LAMP

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