JP2004014197A - Lighting fixture for vehicle - Google Patents

Lighting fixture for vehicle Download PDF

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Publication number
JP2004014197A
JP2004014197A JP2002163452A JP2002163452A JP2004014197A JP 2004014197 A JP2004014197 A JP 2004014197A JP 2002163452 A JP2002163452 A JP 2002163452A JP 2002163452 A JP2002163452 A JP 2002163452A JP 2004014197 A JP2004014197 A JP 2004014197A
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JP
Japan
Prior art keywords
light
light source
reflection
led
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002163452A
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Japanese (ja)
Inventor
Kunihiro Abe
阿部 邦宏
Original Assignee
Fuji Heavy Ind Ltd
富士重工業株式会社
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Filing date
Publication date
Application filed by Fuji Heavy Ind Ltd, 富士重工業株式会社 filed Critical Fuji Heavy Ind Ltd
Priority to JP2002163452A priority Critical patent/JP2004014197A/en
Publication of JP2004014197A publication Critical patent/JP2004014197A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0025Combination of two or more reflectors for a single light source
    • F21V7/0033Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F21V7/0041Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13Signalling 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
    • F21S43/14Light emitting diodes [LED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0008Reflectors for light sources providing for indirect lighting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0025Combination of two or more reflectors for a single light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

<P>PROBLEM TO BE SOLVED: To achieve shared use between a filament bulb type lighting fixture housing and an LED light source type lighting apparatus housing, by allowing the exiting light from a multi-point light emitting part comprising a plurality of LEDs to have light distribution characteristics equivalent to those of a filament bulb. <P>SOLUTION: A cap 2a of the LED light source 2 has the same specification as a cap of the filament bulb to allow the lamp housing 1 to be shared. A reflection member 11 is disposed in a direction of the exiting light from the multi-point light emitting part 10 including a plurality of LEDs 9 to reflect the exiting light from the multi-point light emitting part 10 so that the distribution characteristics equivalent to those of the filament bulb can be obtained. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、LED光源を装着する灯具ハウジングとフィラメントバルブを装着する灯具ハウジングとを共用化した車両用灯具に関する。
【0002】
【従来の技術】
従来、LEDを発光部とする車両用灯具として、本出願人は、特開2001−126510号公報において、光源バルブの発光部としてフィラメントと同等の配光特性を有するLED素子を採用する技術を提案した。
【0003】
このLED素子を発光部とする光源バルブによれば、従来の灯具ハウジングに取り付けられているフィラメントを発光部とする光源バルブに代えて、LED素子を発光部とする光源バルブをそのまま取り付けることができるため、高い汎用性を得ることができる。
【0004】
【発明が解決しようとする課題】
しかし、上述した公報に開示されている車両用灯具では、フィラメントと同等の配光特性を得るために、LED素子を曲面状に形成した基板に実装し、しかもこの状態で光源バルブに封装しなければならないため、製造が煩雑で、製品コストが高くなってしまう不都合がある。
【0005】
これに対処するに、例えば特開2000−100218号公報には、発光部として多数のLEDを実装したLED基板と、フィラメントバルブとを共通の灯具ハウジングに対して、選択的に取り付け可能とする技術が開示されている。
【0006】
しかし、この公報に開示されている技術では、フィラメントバルブの配光特性と、多数のLEDで構成された発光部の配光特性とが相違するため、例えばフィラメントバルブ仕様の灯具ハウジングに、多数のLEDで構成された発光部を有するLED光源を装着した場合には、配光特性の相違により看者に違和感を与えてしまう問題がある。
【0007】
本発明は、上記事情に鑑み、多数のLEDで発光部を構成したLED光源の製造が容易で、製品コストの低減を実現することができ、しかも、当該LED光源をフィラメントバルブに代えて装着した場合であっても、フィラメントバルブと同等の配光特性を得ることができて、看者に違和感を与えることが無く、製品の高い信頼性を得ることのできる車両用灯具を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記目的を達成するため本発明は、灯具ハウジングの後部に光源用ソケットを配設し、該光源用ソケットの周囲に、上記灯具ハウジングと一体或いは別体の反射面を有する車両用灯具において、上記光源用ソケットに装着可能な口金を背面側に有するLED基板の前面に多数の発光ダイオードから成る多点発光部を実装したLED光源と、上記多点発光部の前方に配設した反射部材とを備えることを特徴とする。
【0009】
この場合、好ましくは、1)上記反射部材が上記多点発光部の出射方向に向かって開くホーン状に形成されていることを特徴とする。
【0010】
2)上記反射部材がハーフミラーで構成されていることを特徴とする。
【0011】
3)上記反射部材が導光体で形成されており、該導光体の上記発光部と反対側に指向する面が該発光部の出射方向に向かって開くホーン状の凹部に形成されていると共に、該ホーン状に形成された面に反射面が形成されていることを特徴とする。
【0012】
4)上記反射部材が導光体で形成されていると共に、該導光体に光反射粒子を混在させたことを特徴とする。
【0013】
【発明の実施の形態】
以下、図面に基づいて本発明の一実施の形態を説明する。図1〜図3に本発明の第1実施の形態を示す。ここで、図1はLED光源を装着した車両用灯具の断面図、図2はLED光源の平面図、図3はフィラメントバルブを装着した車両用灯具の断面図である。
【0014】
図1、図3の符号1は灯具ハウジングで、2はLED光源、3はフィラメントバルブである。灯具ハウジング1は、ハウジング本体4と、このハウジング本体4の開口端に装着されるアウタレンズ5とを有している。
【0015】
又、ハウジング本体4の内面は凹面状に形成されており、その表面に、アルミニュウム蒸着等により反射面4aが形成されている。又、ハウジング本体4にソケット取付け部4bが形成され、このソケット取付け部4bに光源用ソケット6が装着される。尚、反射面4aは、ハウジング本体4とは別体に形成されていても良い。
【0016】
後述するように、LED光源2とフィラメントバルブ3とに各々設けられている口金2a,3aは同一の仕様で形成されており、従って、この各口金2a,3aを装着する光源用ソケット6は共用化が可能である。この場合、別態様としては、光源用ソケットは、各口金2a,3aに対して専用のタイプとし、各光源用ソケットの外形を、ハウジング本体4のソケット取付け部4bに対して取付け可能な形状とするようにして、ハウジング本体4の共用化を実現するようにしても良い。
【0017】
一方、ハウジング本体4の開口端に装着されるアウタレンズ5の裏面に、リフレックスリフレクタ5aが形成されている。
【0018】
ハウジング本体4の反射面4a、及びアウタレンズ5のリフレックスリフレクタ5aは、フィラメントバルブ3の配光特性に合わせて設定されており、フィラメントバルブ3の口金3aを光源用ソケット6に装着し、フィラメントバルブ3を発光させると、フィラメントバルブ3からの出射光は適切に補正された後、アウタレンズ5から外部へ出射される。
【0019】
又、図1に示すように、LED光源2は、円形の平板状に形成されたLED基板8の背面に口金2aが設けられている。この口金2aは、フィラメントバルブ3の口金3aと同一仕様で形成されており、従って、フィラメントバルブ3の口金3aに適応する仕様で形成されている光源用ソケット6に対して、このLED光源2に設けられている口金2aをそのまま装着することができる。
【0020】
又、図1、図2に示すように、LED基板8の前面に、多数のLED9を所定間隔毎に実装してなる多点発光部10が設けられている。更に、この多点発光部10の前方に、反射部材11が配設されている。この反射部材11は多点発光部10の出射方向に向かって開くホーン状に形成されており、この反射部材11の外表面に、アルミニュウム蒸着等により反射面11aが形成されている。
【0021】
この反射部材11の反射面11aは、多点発光部10を構成する各LED9からの出射光が、反射面11aで反射され、次いで、ハウジング本体4の反射面4aで反射されたときの配光特性が、フィラメントバルブ3の配光特性とほぼ同一となるような曲面に形成されている。
【0022】
次に、このような構成による車両用灯具の作用について説明する。
例えば電気自動車に取付けられる車両用灯具は、消費電力を削減するために、通常の車両用灯具に装着されているフィラメントバルブ3に代えてLED光源2を使用することが望ましい。
【0023】
本実施の形態では、フィラメントバルブ3の口金3aとLED光源2の口金2aとが、同一の仕様で形成されているため、光源用ソケット6を共用化することができる。従って、通常のガソリン車等で採用されている灯具ハウジング1をそのまま電気自動車に組付け、フィラメントバルブ3に代えてLED光源2を光源用ソケット6にそのまま装着することができる。
【0024】
その結果、灯具ハウジング1を、フィラメントバルブ仕様とLED光源仕様とで供用化させることができ、部品の共用化による製造コストの低減を図ることができる。
【0025】
又、LED光源2に設けられている多点発光部10を構成する多数のLED9から出射された光は、その殆どが、その出射方向に配設されている反射部材11の表面に形成された反射面11aで反射され、次いでその殆どがハウジング本体4の内面に形成されている反射面4aで反射され、フィラメントバルブ3とほぼ同一の配光特性にて、アウタレンズ5から外部に出射される。
【0026】
このように、本実施の形態によれば、多数のLED9で構成された多点発光部10から出射される光を反射部材11の反射面11aで反射させることで、フィラメントバルブ3とほぼ同一の配光特性を得ることができるようにしたので、灯具ハウジング1をフィラメントバルブ仕様とLED光源仕様とで供用化させることができる。そのため、LED光源仕様においても専用の灯具ハウジング1を製造する必要が無くなり、設計工数、製造工数が削減でき、製造コストの低減を図ることができる。
【0027】
又、図4に本発明の第2実施の形態によるLED光源を装着した車両用灯具の断面図を示す。
上述した第1実施の形態では、反射部材11の反射面11aで、多点発光部10を構成する多数のLED9からの出射光を全反射するようにしたが、本実施の形態では、反射部材21としてハーフミラーを採用し、反射部材21に入射された光の一部を透過させ、残りを、第1実施の形態と同様の反射角で反射させるようにしたものである。尚、ハーフミラーは、例えば透明プラスチックで形成した本体部の外表面に、アルミニューム等の金属を真空蒸着させることで形成する。
【0028】
このような構成では、反射部材21をハーフミラーとすることで、多点発光部10を構成する多数のLED9からの出射光の一部を、反射部材21を透過させて出射させることができ、反射部材11そのものによって光が遮断されて影が形成されてしまう、いわゆる中抜けが防止され、フィラメントバルブ3により近い配光特性を得ることができる。
【0029】
又、図5に本発明の第3実施の形態によるるLED光源を装着した車両用灯具の断面図を示す。
上述した第1実施の形態では、反射部材11の外表面に反射面11aを形成したが、本実施の形態では、反射部材31を導光体と一体に形成し、この反射部材31の多点発光部10と反対側に指向する面に、多点発光部10の出射方向に向かってホーン状の凹部31aを形成し、この凹部31aの表面をアルミニューム蒸着等によりコーティングして反射面を形成したもので、反射部材31を導光体と一体に形成したことで、部品点数が削減され、更に、保持構造を簡素化することができる。
【0030】
又、図6に本発明の第4実施の形態によるるLED光源を装着した車両用灯具の断面図を示す。
上述した第3実施の形態では、反射部材31を導光体とし、ホーン状に形成した凹部31aに反射面を形成させたが、本実施の形態では、導光体で形成した反射部材41中に、光反射粒子41aを混在させることで、反射部材41に入射された、多点発光部10からの光が光反射粒子41aで反射されて散乱されるようにしたもので、光の散乱によりフィラメントバルブと同等の配光特性を得ることができる。
【0031】
光反射粒子41aとしては、炭酸カルシウム等の無機物片、微粒状のアルミニューム等の異物を混入する場合に限らず、導光体内部に気泡を残留形成させるようにした場合における気泡等であっても良い。
【0032】
このような構成によれば、導光体を成形する際に、予め光反射粒子(気泡の場合は気体)を混入させるだけで、反射部材41を形成することができるため、製造が容易で、製品コストの低減を図ることができる。
【0033】
【発明の効果】
以上、説明したように本発明によれば、多数のLEDで発光部を構成したLED光源の製造が容易となり、製品コストの低減を実現することができる。
【0034】
又、LED光源をフィラメントバルブに代えて装着するので、消費電力の低減、長寿命化等を実現することができると共に、フィラメントバルブと同等の配光特性を得ることができるため、看者に違和感を与えることが無く、製品の信頼性を高めることができる。
【図面の簡単な説明】
【図1】第1実施の形態によるLED光源を装着した車両用灯具の断面図
【図2】同、LED光源の平面図
【図3】同、フィラメントバルブを装着した車両用灯具の断面図
【図4】第2実施の形態によるLED光源を装着した車両用灯具の断面図
【図5】第3実施の形態によるるLED光源を装着した車両用灯具の断面図
【図6】第4実施の形態によるるLED光源を装着した車両用灯具の断面図
【符号の説明】
1 灯具ハウジング
2 LED光源
2a,3a 口金
3 フィラメントバルブ
4a 反射面
6 光源用ソケット
8 LED基板
9 発光ダイオード
10 多点発光部
11,21,31,41 反射部材
31a 凹部
41a 光反射粒子
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle lamp in which a lamp housing for mounting an LED light source and a lamp housing for mounting a filament bulb are shared.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a vehicular lamp having an LED as a light emitting unit, the present applicant has proposed in Japanese Patent Application Laid-Open No. 2001-126510 a technique of using an LED element having a light distribution characteristic equivalent to a filament as a light emitting unit of a light source bulb. did.
[0003]
According to the light source bulb having the LED element as the light emitting section, the light source bulb having the LED element as the light emitting section can be directly attached instead of the light source bulb having the filament attached to the conventional lamp housing as the light emitting section. Therefore, high versatility can be obtained.
[0004]
[Problems to be solved by the invention]
However, in the vehicle lamp disclosed in the above-mentioned publication, in order to obtain light distribution characteristics equivalent to a filament, an LED element must be mounted on a substrate formed into a curved surface, and furthermore, in this state, the LED element must be sealed in a light source bulb. Therefore, there is a disadvantage that the production is complicated and the product cost is increased.
[0005]
To cope with this, for example, Japanese Patent Application Laid-Open No. 2000-100218 discloses a technique in which an LED board on which a large number of LEDs are mounted as a light emitting section and a filament bulb can be selectively attached to a common lamp housing. Is disclosed.
[0006]
However, in the technology disclosed in this publication, since the light distribution characteristics of the filament bulb are different from the light distribution characteristics of the light-emitting portion composed of a large number of LEDs, for example, a large number of filament lamp-specific lamp housings are required. When an LED light source having a light-emitting portion composed of LEDs is mounted, there is a problem that a difference in light distribution characteristics gives a viewer an uncomfortable feeling.
[0007]
In view of the above circumstances, the present invention makes it easy to manufacture an LED light source in which a light emitting portion is constituted by a large number of LEDs, and can realize a reduction in product cost. Further, the LED light source is mounted instead of a filament bulb. Even in this case, an object of the present invention is to provide a vehicular lamp capable of obtaining light distribution characteristics equivalent to that of a filament bulb, not giving a viewer a sense of incongruity, and obtaining high reliability of the product. And
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vehicle lamp having a light source socket provided at a rear portion of a lamp housing and having a reflection surface integrated with or separate from the lamp housing around the light source socket. An LED light source in which a multi-point light-emitting portion composed of a large number of light-emitting diodes is mounted on the front surface of an LED substrate having a base that can be attached to a light source socket on the back side, and a reflecting member disposed in front of the multi-point light-emitting portion. It is characterized by having.
[0009]
In this case, preferably, 1) the reflection member is formed in a horn shape that opens in the emission direction of the multipoint light emitting unit.
[0010]
2) The reflection member is constituted by a half mirror.
[0011]
3) The reflection member is formed of a light guide, and a surface of the light guide facing the opposite side to the light emitting portion is formed in a horn-shaped concave portion that opens in an emission direction of the light emitting portion. In addition, a reflection surface is formed on the horn-shaped surface.
[0012]
4) The reflection member is formed of a light guide, and light reflection particles are mixed in the light guide.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention. Here, FIG. 1 is a cross-sectional view of a vehicle lamp equipped with an LED light source, FIG. 2 is a plan view of the LED light source, and FIG. 3 is a cross-sectional view of a vehicle lamp equipped with a filament bulb.
[0014]
1 and 3, reference numeral 1 denotes a lamp housing, 2 denotes an LED light source, and 3 denotes a filament bulb. The lamp housing 1 has a housing body 4 and an outer lens 5 attached to an open end of the housing body 4.
[0015]
Further, the inner surface of the housing body 4 is formed in a concave shape, and a reflective surface 4a is formed on the surface by aluminum evaporation or the like. Further, a socket attachment portion 4b is formed in the housing body 4, and the light source socket 6 is attached to the socket attachment portion 4b. Note that the reflection surface 4a may be formed separately from the housing body 4.
[0016]
As will be described later, the bases 2a, 3a provided on the LED light source 2 and the filament bulb 3, respectively, are formed with the same specifications. Therefore, the light source socket 6 for mounting the bases 2a, 3a is shared. Is possible. In this case, as another aspect, the light source socket is a type dedicated to each of the bases 2a and 3a, and the outer shape of each light source socket is set to a shape that can be attached to the socket attachment portion 4b of the housing body 4. Thus, the housing body 4 may be shared.
[0017]
On the other hand, a reflex reflector 5a is formed on the back surface of the outer lens 5 attached to the opening end of the housing body 4.
[0018]
The reflecting surface 4a of the housing body 4 and the reflex reflector 5a of the outer lens 5 are set in accordance with the light distribution characteristics of the filament valve 3, and the base 3a of the filament valve 3 is mounted on the light source socket 6, and the filament valve is mounted. When the light emitting device 3 emits light, the light emitted from the filament valve 3 is appropriately corrected and then emitted from the outer lens 5 to the outside.
[0019]
As shown in FIG. 1, the LED light source 2 is provided with a base 2a on the back surface of an LED substrate 8 formed in a circular flat plate shape. The base 2a is formed in the same specification as the base 3a of the filament bulb 3, and therefore, the LED light source 2 is connected to the light source socket 6 formed according to the specification adapted to the base 3a of the filament bulb 3. The provided base 2a can be mounted as it is.
[0020]
As shown in FIGS. 1 and 2, a multi-point light emitting unit 10 having a large number of LEDs 9 mounted at predetermined intervals is provided on the front surface of the LED substrate 8. Further, a reflection member 11 is provided in front of the multipoint light emitting section 10. The reflecting member 11 is formed in a horn shape that opens toward the emission direction of the multi-point light emitting unit 10, and a reflecting surface 11a is formed on an outer surface of the reflecting member 11 by aluminum evaporation or the like.
[0021]
The reflecting surface 11a of the reflecting member 11 is a light distribution when light emitted from each LED 9 constituting the multi-point light emitting section 10 is reflected by the reflecting surface 11a and then reflected by the reflecting surface 4a of the housing body 4. The curved surface is formed so that the characteristics are almost the same as the light distribution characteristics of the filament bulb 3.
[0022]
Next, the operation of the vehicle lamp having such a configuration will be described.
For example, for a vehicle lamp mounted on an electric vehicle, it is desirable to use the LED light source 2 instead of the filament bulb 3 mounted on a normal vehicle lamp in order to reduce power consumption.
[0023]
In the present embodiment, since the base 3a of the filament bulb 3 and the base 2a of the LED light source 2 are formed with the same specifications, the light source socket 6 can be shared. Therefore, the lamp housing 1 employed in a normal gasoline-powered vehicle or the like can be directly mounted on an electric vehicle, and the LED light source 2 can be directly mounted on the light source socket 6 instead of the filament bulb 3.
[0024]
As a result, the lamp housing 1 can be used in the filament bulb specification and the LED light source specification, and the production cost can be reduced by sharing parts.
[0025]
In addition, most of the light emitted from the large number of LEDs 9 constituting the multi-point light emitting section 10 provided in the LED light source 2 is formed on the surface of the reflecting member 11 arranged in the emission direction. The light is reflected by the reflecting surface 11a, most of the light is then reflected by the reflecting surface 4a formed on the inner surface of the housing body 4, and is emitted to the outside from the outer lens 5 with almost the same light distribution characteristics as the filament bulb 3.
[0026]
As described above, according to the present embodiment, the light emitted from the multi-point light emitting unit 10 including the large number of LEDs 9 is reflected by the reflecting surface 11 a of the reflecting member 11, so that it is substantially the same as the filament valve 3. Since the light distribution characteristics can be obtained, the lamp housing 1 can be used in a filament bulb specification and an LED light source specification. Therefore, it is not necessary to manufacture the dedicated lamp housing 1 even in the LED light source specification, so that the number of design steps and manufacturing steps can be reduced, and the manufacturing cost can be reduced.
[0027]
FIG. 4 is a sectional view of a vehicular lamp equipped with an LED light source according to a second embodiment of the present invention.
In the first embodiment described above, the reflection surface 11a of the reflection member 11 totally reflects the light emitted from the large number of LEDs 9 constituting the multi-point light-emitting unit 10, but in the present embodiment, the reflection member 11 A half mirror is adopted as 21 so that a part of the light incident on the reflecting member 21 is transmitted, and the rest is reflected at the same reflection angle as in the first embodiment. The half mirror is formed by vacuum-depositing a metal such as aluminum on the outer surface of a main body formed of, for example, transparent plastic.
[0028]
In such a configuration, by using the reflecting member 21 as a half mirror, a part of the light emitted from the multiple LEDs 9 included in the multi-point light emitting unit 10 can be transmitted through the reflecting member 21 and emitted. Light is blocked by the reflection member 11 itself to form a shadow, that is, so-called hollowing out, and light distribution characteristics closer to the filament valve 3 can be obtained.
[0029]
FIG. 5 is a sectional view of a vehicle lamp equipped with an LED light source according to a third embodiment of the present invention.
In the above-described first embodiment, the reflection surface 11a is formed on the outer surface of the reflection member 11, but in the present embodiment, the reflection member 31 is formed integrally with the light guide, and the reflection member 31 has multiple points. A horn-shaped recess 31a is formed on the surface facing the opposite side of the light emitting unit 10 toward the emission direction of the multi-point light emitting unit 10, and the surface of the recess 31a is coated by aluminum vapor deposition or the like to form a reflection surface. By forming the reflecting member 31 integrally with the light guide, the number of components can be reduced, and the holding structure can be simplified.
[0030]
FIG. 6 is a sectional view of a vehicle lamp equipped with an LED light source according to a fourth embodiment of the present invention.
In the above-described third embodiment, the reflecting member 31 is a light guide, and the reflecting surface is formed in the horn-shaped concave portion 31a. However, in the present embodiment, the reflecting member 41 formed of the light guiding member is used. The light reflecting particles 41a are mixed, so that the light from the multi-point light emitting unit 10 incident on the reflecting member 41 is reflected and scattered by the light reflecting particles 41a. Light distribution characteristics equivalent to a filament valve can be obtained.
[0031]
The light-reflecting particles 41a are not limited to the case where an inorganic substance such as calcium carbonate or a foreign substance such as fine-grained aluminum is mixed therein, but may be a bubble or the like in a case where bubbles are formed to remain inside the light guide. Is also good.
[0032]
According to such a configuration, when the light guide is formed, the reflection member 41 can be formed only by mixing light reflection particles (gas in the case of bubbles) in advance, so that the manufacturing is easy. Product cost can be reduced.
[0033]
【The invention's effect】
As described above, according to the present invention, it is possible to easily manufacture an LED light source having a light emitting unit including a large number of LEDs, and to realize a reduction in product cost.
[0034]
In addition, since the LED light source is mounted in place of the filament bulb, it is possible to reduce power consumption and extend the life, and to obtain light distribution characteristics equivalent to the filament bulb. And the reliability of the product can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a vehicle lamp equipped with an LED light source according to a first embodiment. FIG. 2 is a plan view of the LED light source. FIG. 3 is a cross-sectional view of a vehicle lamp equipped with a filament valve. FIG. 4 is a sectional view of a vehicle lamp equipped with an LED light source according to a second embodiment; FIG. 5 is a sectional view of a vehicle lamp equipped with an LED light source according to a third embodiment; FIG. Sectional view of vehicle lamp equipped with LED light source according to form [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Lamp housing 2 LED light source 2a, 3a Base 3 Filament valve 4a Reflection surface 6 Light source socket 8 LED board 9 Light emitting diode 10 Multipoint light emitting parts 11, 21, 31, 41 Reflecting member 31a Concave part 41a Light reflecting particles

Claims (5)

  1. 灯具ハウジングの後部に光源用ソケットを配設し、該光源用ソケットの周囲に、上記灯具ハウジングと一体或いは別体の反射面を有する車両用灯具において、
    上記光源用ソケットに装着可能な口金を背面側に有するLED基板の前面に多数の発光ダイオードから成る多点発光部を実装したLED光源と、
    上記多点発光部の前方に配設した反射部材と、
    を備えることを特徴とする車両用灯具。
    A light source socket is provided at a rear portion of the lamp housing, and a vehicle lamp having a reflection surface integrated with or separate from the lamp housing around the light source socket.
    An LED light source mounted with a multi-point light-emitting unit composed of a large number of light-emitting diodes on the front surface of an LED substrate having a base mountable on the back side of the light source socket,
    A reflecting member disposed in front of the multipoint light emitting section;
    A vehicle lighting device comprising:
  2. 上記反射部材が上記多点発光部の出射方向に向かって開くホーン状に形成されていることを特徴とする請求項1記載の車両用灯具。The vehicular lamp according to claim 1, wherein the reflection member is formed in a horn shape that opens in an emission direction of the multipoint light emitting unit.
  3. 上記反射部材がハーフミラーで構成されていることを特徴とする請求項2記載の車両用灯具。3. The vehicular lamp according to claim 2, wherein the reflection member is constituted by a half mirror.
  4. 上記反射部材が導光体で形成されており、該導光体の上記発光部と反対側に指向する面が該発光部の出射方向に向かって開くホーン状の凹部に形成されていると共に、該ホーン状に形成された面に反射面が形成されていることを特徴とする請求項1記載の車両用灯具。The reflection member is formed of a light guide, and a surface of the light guide that is directed to the opposite side to the light emitting unit is formed in a horn-shaped concave portion that opens in an emission direction of the light emitting unit. The vehicle lamp according to claim 1, wherein a reflection surface is formed on the horn-shaped surface.
  5. 上記反射部材が導光体で形成されていると共に、該導光体に光反射粒子を混在させたことを特徴とする請求項1記載の車両用灯具。The vehicular lamp according to claim 1, wherein the reflection member is formed of a light guide, and light reflection particles are mixed in the light guide.
JP2002163452A 2002-06-04 2002-06-04 Lighting fixture for vehicle Pending JP2004014197A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012824A (en) * 2004-06-23 2006-01-12 Osram Sylvania Inc Led lamp having light guide at center
JP2007234407A (en) * 2006-03-01 2007-09-13 Seiko Epson Corp Light source device having a plurality of reflecting surfaces
JP2008546162A (en) * 2005-06-07 2008-12-18 フュージョン ユーブイ システムズ, インコーポレイテッド Solid state light source for curing and surface modification
JP2010214994A (en) * 2009-03-13 2010-09-30 Kanto Auto Works Ltd Indoor light for vehicle
JP2011090962A (en) * 2009-10-23 2011-05-06 Fuji Heavy Ind Ltd Lighting fixture for vehicle
WO2011111476A1 (en) * 2010-03-11 2011-09-15 株式会社 Flat out Led bulb
JP2012151145A (en) * 2011-01-14 2012-08-09 Panasonic Corp Illumination light source
ITMI20120605A1 (en) * 2012-04-13 2013-10-14 Artemide Spa Led lighting device, in particular reflector spotlight
JP2014220209A (en) * 2013-05-10 2014-11-20 有限会社恒和精工 Light source device
CN104728647A (en) * 2015-04-14 2015-06-24 广州光炬智能科技有限公司 Bulb

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012824A (en) * 2004-06-23 2006-01-12 Osram Sylvania Inc Led lamp having light guide at center
US8696155B2 (en) 2005-06-07 2014-04-15 Heraeus Noblelight Fusion Uv Inc. Solid-state light sources for curing and surface modification
JP2008546162A (en) * 2005-06-07 2008-12-18 フュージョン ユーブイ システムズ, インコーポレイテッド Solid state light source for curing and surface modification
JP4631745B2 (en) * 2006-03-01 2011-02-23 セイコーエプソン株式会社 Light source device having a plurality of reflecting surfaces
JP2007234407A (en) * 2006-03-01 2007-09-13 Seiko Epson Corp Light source device having a plurality of reflecting surfaces
JP2010214994A (en) * 2009-03-13 2010-09-30 Kanto Auto Works Ltd Indoor light for vehicle
JP2011090962A (en) * 2009-10-23 2011-05-06 Fuji Heavy Ind Ltd Lighting fixture for vehicle
WO2011111476A1 (en) * 2010-03-11 2011-09-15 株式会社 Flat out Led bulb
JP2011210695A (en) * 2010-03-11 2011-10-20 Flat Out Co Ltd Led bulb
JP2012151145A (en) * 2011-01-14 2012-08-09 Panasonic Corp Illumination light source
ITMI20120605A1 (en) * 2012-04-13 2013-10-14 Artemide Spa Led lighting device, in particular reflector spotlight
EP2650605A1 (en) * 2012-04-13 2013-10-16 ARTEMIDE S.p.A. LED lighting device, in particular a catadioptric spotlight
US9146340B2 (en) 2012-04-13 2015-09-29 Artemide S.P.A. LED lighting device, in particular catadioptric spotlight
JP2014220209A (en) * 2013-05-10 2014-11-20 有限会社恒和精工 Light source device
CN104728647A (en) * 2015-04-14 2015-06-24 广州光炬智能科技有限公司 Bulb

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