JP2005122945A - Vehicular lighting device - Google Patents

Vehicular lighting device Download PDF

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Publication number
JP2005122945A
JP2005122945A JP2003354216A JP2003354216A JP2005122945A JP 2005122945 A JP2005122945 A JP 2005122945A JP 2003354216 A JP2003354216 A JP 2003354216A JP 2003354216 A JP2003354216 A JP 2003354216A JP 2005122945 A JP2005122945 A JP 2005122945A
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Prior art keywords
light emitting
emitting unit
cover
led
gap
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JP2003354216A
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Japanese (ja)
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Shiyougo Kawaguchi
将吾 川口
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2003354216A priority Critical patent/JP2005122945A/en
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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
    • 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
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular lighting device capable of properly cooling LEDs. <P>SOLUTION: The vehicular lighting device 11 is formed, by covering the outside of a light emitting unit 22 having a plurality of LEDs 26 by a cover 13. The LEDs 26 are cooled properly, by directly guiding the outside air to the LEDs 26 via a slit S formed between the cover 13 and the light-emitting unit 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、車両用灯光装置に関し、特にその発光体としてＬＥＤを用いた車両用灯光装置に関する。   The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp using an LED as a light emitter.

車両用灯光装置においては、荷室スペースやエンジンルーム等の他のスペースを確保する目的等から小型化することが望まれており、このような小型化を例えばＬＥＤを用いることで可能とした車両用灯光装置がある（例えば、特許文献１参照）。
特開２００３−５４４６０号公報 In a vehicle lighting device, it is desired to reduce the size for the purpose of securing other space such as a cargo space and an engine room. A vehicle that enables such size reduction by using, for example, LEDs. There is a lighting device (see, for example, Patent Document 1).
JP 2003-54460 A

上記のようにＬＥＤを用いると灯光装置としての小型化は可能となるが、ＬＥＤ自体が熱に弱くその冷却が必要となる場合があった。特に、デザイン上、車体の上面側に設けられる場合は、直射日光の影響を受けやすいことから、積極的に冷却を行わなければならない。   When an LED is used as described above, it is possible to reduce the size of the lamp device, but there are cases where the LED itself is weak against heat and needs to be cooled. In particular, when it is provided on the upper surface side of the vehicle body by design, it must be actively cooled because it is easily affected by direct sunlight.

したがって、本発明は、ＬＥＤを良好に冷却することができる車両用灯光装置の提供を目的とする。   Therefore, an object of the present invention is to provide a vehicular lamp device that can cool an LED satisfactorily.

上記目的を達成するために、請求項１に係る発明は、複数のＬＥＤ（例えば実施形態におけるＬＥＤ２６）を有する発光ユニット（例えば実施形態における発光ユニット２２）の外側をカバー（例えば実施形態におけるカバーレンズ１３）で覆ってなる車両用灯光装置（例えば実施形態における車両用灯光装置１１）であって、前記カバーと前記発光ユニットとの隙間（例えば実施形態における隙間Ｓ）を介して外気を前記ＬＥＤに直接導くことを特徴としている。   In order to achieve the above object, the invention according to claim 1 covers the outside of a light emitting unit (for example, the light emitting unit 22 in the embodiment) having a plurality of LEDs (for example, the LED 26 in the embodiment) (for example, a cover lens in the embodiment). 13) A vehicular lamp device (for example, the vehicular lamp device 11 in the embodiment) covered with (13), in which outside air is supplied to the LEDs through a gap (for example, a gap S in the embodiment) between the cover and the light emitting unit. It is characterized by direct guidance.

請求項２に係る発明は、請求項１に係る発明において、車体前部に設けられるものであって、前記発光ユニットよりも前側に、前記隙間に外気を取り入れる取入口（例えば実施形態における取入口４０）が設けられていることを特徴としている。   The invention according to claim 2 is the invention according to claim 1, and is provided at the front of the vehicle body, and is an intake port (for example, an intake port in the embodiment) for taking outside air into the gap in front of the light emitting unit. 40) is provided.

請求項３に係る発明は、請求項１または２に係る発明において、前記発光ユニットが回動可能に設けられることで該発光ユニットの回動軸線と直交する方向における両側方に該発光ユニットの回動を許容する空間（例えば実施形態における空間Ｓ３）が設けられ、該空間が前記隙間の一部を構成しており、前記発光ユニットの前記ＬＥＤに対し反対側には、前記発光ユニットの回動軸線に直交する方向に沿って広がる放熱フィン（例えば実施形態における放熱フィン２７）が前記回動軸線に沿う方向に配列して複数設けられていることを特徴としている。   According to a third aspect of the present invention, in the first or second aspect of the invention, the light emitting unit is rotatably provided so that the light emitting unit can be rotated on both sides in a direction perpendicular to the rotation axis of the light emitting unit. A space allowing movement (for example, the space S3 in the embodiment) is provided, and the space constitutes a part of the gap, and the light emitting unit is rotated on the side opposite to the LED of the light emitting unit. A plurality of heat dissipating fins (for example, heat dissipating fins 27 in the embodiment) extending along a direction orthogonal to the axis is arranged in a direction along the rotation axis.

請求項１に係る発明によれば、ＬＥＤを有する発光ユニットとこれを覆うカバーとの隙間を介して外気をＬＥＤに直接導くため、ＬＥＤを良好に冷却することができる。   According to the first aspect of the invention, since the outside air is directly guided to the LED through the gap between the light emitting unit having the LED and the cover covering the LED, the LED can be cooled well.

請求項２に係る発明によれば、車体前部に設けられることから、走行風を、発光ユニットよりも前側に設けられた取入口からカバーと発光ユニットとの隙間に良好に取り入れることができ、ＬＥＤをさらに良好に冷却することができる。   According to the invention according to claim 2, since it is provided in the front part of the vehicle body, it is possible to satisfactorily take the traveling wind into the gap between the cover and the light emitting unit from the intake provided in front of the light emitting unit, The LED can be cooled even better.

請求項３に係る発明によれば、発光ユニットが回動可能に設けられていることから、発光体ユニットの回動軸線と直交する方向における両側方には回動を許容する空間が設けられることになり、取り入れられた外気はこれら空間を介して流れる。そして、発光体ユニットの回動軸線と直交する方向における両側方から流れる外気に対して放熱フィンが発光体ユニットの回動軸線に直交する方向に沿って広がることからこの外気を堰き止めることなく良好に通過させることになり、高い放熱効率を確保できる。したがって、ＬＥＤをさらに良好に冷却することができる。   According to the invention of claim 3, since the light emitting unit is provided so as to be rotatable, spaces that allow rotation are provided on both sides in the direction orthogonal to the rotation axis of the light emitting unit. The taken-in outside air flows through these spaces. And since the radiation fin spreads along the direction orthogonal to the rotation axis of the light emitter unit with respect to the outside air flowing from both sides in the direction orthogonal to the rotation axis of the light emitter unit, it is good without blocking this external air Therefore, high heat dissipation efficiency can be secured. Therefore, it is possible to cool the LED even better.

本発明の一実施形態の車両用灯光装置を図面を参照して以下に説明する。   A vehicle lighting device according to an embodiment of the present invention will be described below with reference to the drawings.

図１は、本実施形態の車両用灯光装置１１を示すもので、この車両用灯光装置１１は、図示は略すが車体前部上面の車幅方向両端側における前側ほど若干下方に位置するように水平に対し鋭角で傾斜する部分にそれぞれ取り付けられて車体前方に光を照射等するヘッドランプユニットである。   FIG. 1 shows a vehicular lamp device 11 according to the present embodiment. The vehicular lamp device 11 is not shown in the figure, but is positioned slightly lower toward the front side at both ends in the vehicle width direction on the upper surface of the front of the vehicle body. This is a headlamp unit that is attached to a portion that is inclined at an acute angle with respect to the horizontal and that irradiates light forward of the vehicle body.

本実施形態の車両用灯光装置１１は、車体側に取り付けられるベース１２と、ベース１２の上側に被せられる透明なカバーレンズ１３と、ベース１２およびカバーレンズ１３の車体前側に取り付けられる前部カバー１４とを有している。ここで、カバーレンズ１３および前部カバー１４は、車体の前部上面を構成するもので全体として前側ほど若干下方に位置するように傾斜している。   The vehicle lighting device 11 of the present embodiment includes a base 12 attached to the vehicle body side, a transparent cover lens 13 placed on the upper side of the base 12, and a front cover 14 attached to the vehicle body front side of the base 12 and the cover lens 13. And have. Here, the cover lens 13 and the front cover 14 constitute a front upper surface of the vehicle body and are inclined so as to be positioned slightly downward toward the front as a whole.

車両用灯光装置１１はベース１２とカバーレンズ１３との間に、車幅方向外側からヘッドランプ１６、車体前後方向に棒状に延びるターンシグナルランプ１７およびフォグランプ１８が設けられている。   The vehicular lamp 11 is provided with a head lamp 16 from the outside in the vehicle width direction, a turn signal lamp 17 and a fog lamp 18 extending in a rod shape from the outside in the vehicle width direction between the base 12 and the cover lens 13.

ベース１２には、車幅方向外側にヘッドランプ１６を収納するための下方に湾曲形状をなして凹む凹部２０が前後方向に延びるように形成されており、この凹部２０の後壁部２０Ａには、後壁部２０Ａから前方に延出するヘッドランプ１６の軸受アーム２１が設けられている。そして、この軸受アーム２１の前端には車体前方を照らすヘッドランプ１６の発光ユニット２２が鉛直方向に沿う軸線を中心に回動可能となるように取り付けられている。ここで、発光ユニット２２と軸受アーム２１とには、図示は略すが発光ユニット２２を回動させる回動駆動機構が設けられており、ステアリングの角度等に応じて発光ユニット２２を左右に回動させて光の照射方向を左右に変更することが可能となっている。このため、ベース１２の凹部２０は、発光ユニット２２の回動軸線と直交する方向における両側方である左右両側方に発光ユニット２２の回動を許容するための空間Ｓ３を形成するようになっている。   The base 12 is formed with a concave portion 20 that is curved and recessed downward to accommodate the headlamp 16 on the outer side in the vehicle width direction so as to extend in the front-rear direction. A bearing arm 21 of the headlamp 16 extending forward from the rear wall portion 20A is provided. A light emitting unit 22 of a headlamp 16 that illuminates the front of the vehicle body is attached to the front end of the bearing arm 21 so as to be rotatable about an axis along the vertical direction. Here, although not shown, the light emitting unit 22 and the bearing arm 21 are provided with a rotation drive mechanism for rotating the light emitting unit 22, and the light emitting unit 22 is rotated to the left and right according to the steering angle and the like. Thus, the light irradiation direction can be changed to the left and right. For this reason, the concave portion 20 of the base 12 forms a space S3 for allowing the light emitting unit 22 to rotate on both the left and right sides which are both sides in the direction orthogonal to the rotation axis of the light emitting unit 22. Yes.

発光ユニット２２は、図２および図３に示すように、軸受アーム２１の前側に回動可能に支持される発光部２４を有しており、発光部２４は、軸受アーム２１に支持されるＬＥＤ支持部材２５と、車体前方に照射方向を向けてＬＥＤ支持部材２５の前面に取り付けられる複数のＬＥＤ２６とを有している。ＬＥＤ２６は、ＬＥＤ支持部材２５の前面の周縁部側において円環状に配列されており、ＬＥＤ支持部材２５の前面のこの円環の内側範囲にも配置されている。なお、円状に配置されたＬＥＤ２６のうち下側のＬＥＤ２６は、他のＬＥＤ２６より小さくされている。また、ＬＥＤ支持部材２５には、ＬＥＤ２６に対し反対側に、発光ユニット２２の鉛直方向に沿う回動軸線に対し直交する水平方向に沿って広がるように放熱フィン２７が、回動軸線に沿う上下方向に所定の間隔をあけて複数形成されている。   As shown in FIGS. 2 and 3, the light emitting unit 22 includes a light emitting unit 24 that is rotatably supported on the front side of the bearing arm 21, and the light emitting unit 24 is an LED supported by the bearing arm 21. It has a support member 25 and a plurality of LEDs 26 attached to the front surface of the LED support member 25 with the irradiation direction facing the front of the vehicle body. The LEDs 26 are arranged in an annular shape on the peripheral edge side of the front surface of the LED support member 25, and are also arranged in an inner range of the annular surface on the front surface of the LED support member 25. Of the LEDs 26 arranged in a circle, the lower LED 26 is smaller than the other LEDs 26. In addition, on the LED support member 25, the radiating fins 27 are arranged vertically on the opposite side to the LED 26 so as to spread along a horizontal direction orthogonal to the rotation axis along the vertical direction of the light emitting unit 22. A plurality are formed at predetermined intervals in the direction.

発光ユニット２２は、発光部２４のＬＥＤ支持部材２５の前側に取り付けられる略円形状のＬＥＤカバー２９を有している。このＬＥＤカバー２９には、円環状に配置されたＬＥＤ２６のうち隣り合う所定の複数個を上下左右の四方から全周にわたって覆う側壁部３０が複数形成されている。このＬＥＤカバー２９は、各側壁部３０でＬＥＤ２６を覆った状態で外周側の取付部３１においてＬＥＤ支持部材２５に取り付けられている。   The light emitting unit 22 has a substantially circular LED cover 29 attached to the front side of the LED support member 25 of the light emitting unit 24. The LED cover 29 is formed with a plurality of side wall portions 30 that cover a predetermined number of adjacent LEDs 26 arranged in an annular shape from the upper, lower, left, and right sides over the entire circumference. The LED cover 29 is attached to the LED support member 25 at the attachment portion 31 on the outer peripheral side with the side walls 30 covering the LEDs 26.

発光ユニット２２は、ＬＥＤカバー２９の前側に取り付けられる略円形状のレンズ支持部材３３を有している。このレンズ支持部材３３は中央部の円筒部３４と、この円筒部３４の前部から半径方向外方かつ前方に斜めに延びる複数の腕部３５と、これら腕部３５の先端側に円筒部３４と同軸をなして設けられる円環部３６とを有しており、円筒部３４において、ＬＥＤカバー２９を通過し、円環状に配列されたＬＥＤ２６とその内側のＬＥＤ２６との間を通って発光部２４のＬＥＤ支持部材２５に取り付けられる。このように取り付けられた状態でＬＥＤカバー２９と円環部３６とは離間している。   The light emitting unit 22 has a substantially circular lens support member 33 attached to the front side of the LED cover 29. The lens support member 33 includes a central cylindrical portion 34, a plurality of arm portions 35 extending obliquely outward and forward in the radial direction from the front portion of the cylindrical portion 34, and the cylindrical portion 34 on the distal end side of the arm portions 35. And a circular portion 36 provided coaxially with the light emitting portion. In the cylindrical portion 34, the light emitting portion passes through the LED cover 29 and passes between the LEDs 26 arranged in an annular shape and the LEDs 26 inside thereof. It is attached to 24 LED support members 25. The LED cover 29 and the annular portion 36 are separated from each other in the attached state.

発光ユニット２２は、上記したレンズ支持部材３３の前側に取り付けられる配光レンズ３８を有している。この配光レンズ３８は、レンズ支持部材３３の円筒部３４とは離間した状態で円環部３６に取り付けられている。   The light emitting unit 22 has a light distribution lens 38 attached to the front side of the lens support member 33 described above. The light distribution lens 38 is attached to the annular portion 36 in a state of being separated from the cylindrical portion 34 of the lens support member 33.

そして、上記の発光ユニット２２がベース１２の凹部２０に収納されるようにして軸受アーム２１に取り付けられることになり、この発光ユニット２２の外側つまり上側を覆うようにカバーレンズ１３が取り付けられることになる。なお、カバーレンズ１３は凹部２０の上側に湾曲形状をなして突出する凸部３９を有しており、凹部２０および凸部３９で略円形状の発光ユニット２２を収納している。   Then, the light emitting unit 22 is attached to the bearing arm 21 so as to be housed in the recess 20 of the base 12, and the cover lens 13 is attached so as to cover the outside, that is, the upper side of the light emitting unit 22. Become. The cover lens 13 has a convex portion 39 that protrudes in a curved shape above the concave portion 20, and the substantially circular light emitting unit 22 is accommodated by the concave portion 20 and the convex portion 39.

カバーレンズ１３の前側に設けられる前部カバー１４には、その車幅方向外側位置に、車両用灯光装置１１の内外を連通させる取入口４０が複数具体的には二カ所、前後および上下に位置をずらして設けられている。また、前部カバー１４の車幅方向内側には車体前方に赤外線を投光する赤外線投光器４１も設けられている。なお、カバーレンズ１３の前側に設けられる結果、前部カバー１４の取入口４０は発光ユニット２２よりも車体前側に設けられている。   The front cover 14 provided on the front side of the cover lens 13 has a plurality of intake ports 40 at the outer side in the vehicle width direction for communicating the inside and outside of the vehicular lamp device 11, specifically at two locations, front and rear, and top and bottom. Are provided. An infrared projector 41 that projects infrared light forward of the vehicle body is also provided on the inner side in the vehicle width direction of the front cover 14. As a result of being provided on the front side of the cover lens 13, the inlet 40 of the front cover 14 is provided on the front side of the vehicle body with respect to the light emitting unit 22.

ここで、これらの取入口４０は、カバーレンズ１３とベース１２の凹部２０と発光ユニット２２との隙間Ｓに連通しており、この隙間Ｓ内に外気を取り入れることになる。そして、発光ユニット２２には、図３に示すように、配光レンズ３８およびこれに連結されたレンズ支持部材３３の円環部３６と、円環部３６に腕部３５を介して連結された円筒部３４との間に、隙間Ｓの一部である隙間Ｓ１を有しており、その外側のＬＥＤカバー２９も配光レンズ３８およびレンズ支持部材３３との間に、隙間Ｓの一部を構成する隙間Ｓ２を有している。このため、円筒部３４の内側に配置されたＬＥＤ２６は、これら隙間Ｓ１，Ｓ２を介して発光ユニット２２の外側に連通している。またＬＥＤカバー２９の各側壁部３０の内側に配置されたＬＥＤ２６も隙間Ｓ２を介して発光ユニット２２の外側に連通している。   Here, these intake ports 40 communicate with a gap S between the cover lens 13, the concave portion 20 of the base 12 and the light emitting unit 22, and outside air is taken into the gap S. As shown in FIG. 3, the light emitting unit 22 is connected to the light distribution lens 38 and the annular portion 36 of the lens support member 33 connected thereto, and to the annular portion 36 via the arm portion 35. A gap S1 which is a part of the gap S is provided between the cylindrical portion 34, and a part of the gap S is also provided between the LED cover 29 on the outer side and the light distribution lens 38 and the lens support member 33. A gap S2 is formed. For this reason, LED26 arrange | positioned inside the cylindrical part 34 is connected to the outer side of the light emission unit 22 via these clearance gaps S1 and S2. Further, the LEDs 26 arranged inside the side wall portions 30 of the LED cover 29 communicate with the outside of the light emitting unit 22 through the gap S2.

以上により、本実施形態の車両用灯光装置１１は、カバーレンズ１３と発光ユニット２２とベース１２との隙間Ｓを介して外気をＬＥＤ２６に直接導くことになる。また、発光ユニット２２が上記のように回動可能に設けられることで発光ユニット２２の回動軸線と直交する方向における両側方に発光ユニット２２の回動を許容する図１に示す空間Ｓ３を形成するように凹部２０の形状が決められており、この凹部２０の空間Ｓ３は、カバーレンズ１３とベース１２の凹部２０と発光ユニット２２との隙間Ｓの一部を構成している。さらに、この隙間Ｓのうち空間Ｓ３よりも後側となる発光ユニット２２と凹部２０の後壁部２０Ａとの隙間Ｓ４に、発光部４０の放熱フィン２７が臨んでいる。なお、例えば取入口４０に対し反対側となるベース１２の後部に、隙間Ｓを車両用灯光装置１１の外に連通させる図示せぬ排気口が設けられている。   As described above, the vehicular lamp device 11 of the present embodiment directly guides the outside air to the LED 26 through the gap S between the cover lens 13, the light emitting unit 22, and the base 12. Further, by providing the light emitting unit 22 so as to be rotatable as described above, the space S3 shown in FIG. 1 that allows the light emitting unit 22 to rotate is formed on both sides in the direction orthogonal to the rotation axis of the light emitting unit 22. Thus, the shape of the concave portion 20 is determined, and the space S3 of the concave portion 20 constitutes a part of the gap S between the cover lens 13, the concave portion 20 of the base 12, and the light emitting unit 22. Furthermore, the radiation fins 27 of the light emitting unit 40 face the gap S4 between the light emitting unit 22 and the rear wall portion 20A of the concave portion 20 which are located behind the space S3 in the gap S. For example, an exhaust port (not shown) that allows the gap S to communicate with the outside of the vehicular lamp device 11 is provided in the rear portion of the base 12 that is opposite to the intake port 40.

以上に述べたように、本実施形態の車両用灯光装置１１は、走行時に取入口４０からカバーレンズ１３とベース１２と発光ユニット２２との隙間Ｓを通って図示せぬ排気口に走行風による外気が流れることになり、この外気が隙間Ｓのうち、発光ユニット２２の配光レンズ３８とレンズ支持部材３３の円筒部３４との隙間Ｓ１と、配光レンズ３８およびレンズ支持部材３３とＬＥＤカバー２９との隙間Ｓ２を介してＬＥＤ２６に直接導かれるため、ＬＥＤ２６を良好に冷却することができる。勿論、走行時以外でも取入口４０および排気口から外気の出入りがあって外気が隙間Ｓを介して直接ＬＥＤ２６に導かれるため、ＬＥＤ２６を良好に冷却することができる。   As described above, the vehicular lamp device 11 according to the present embodiment travels from the intake port 40 through the gap S between the cover lens 13, the base 12, and the light emitting unit 22 to the exhaust port (not shown) when traveling. The outside air flows, and the outside air includes the gap S1 between the light distribution lens 38 of the light emitting unit 22 and the cylindrical portion 34 of the lens support member 33, the light distribution lens 38, the lens support member 33, and the LED cover. Since the LED 26 is directly guided to the LED 26 through the gap S2 with the LED 29, the LED 26 can be cooled well. Of course, since outside air enters and exits from the intake port 40 and the exhaust port even when the vehicle is not traveling, the outside air is directly guided to the LED 26 through the gap S, so that the LED 26 can be cooled well.

また、発光ユニット２２が回動可能に設けられていることから、発光ユニット２２の回動軸線と直交する方向における両側方には回動を許容する空間Ｓ３が設けられることになり、取り入れられた外気はこれら空間Ｓ３を介して流れる。そして、発光ユニット２２の回動軸線と直交する方向における両側から流れる外気に対して放熱フィン２７が発光ユニット２２の回動軸線に直交する方向に沿って広がることからこの外気を堰き止めることなく良好に通過させることになり、高い放熱効率を確保できる。したがって、ＬＥＤ２６をさらに良好に冷却することができる。   In addition, since the light emitting unit 22 is provided so as to be rotatable, spaces S3 that allow rotation are provided on both sides in the direction orthogonal to the rotation axis of the light emitting unit 22, and are incorporated. Outside air flows through these spaces S3. And since the radiation fin 27 spreads along the direction orthogonal to the rotation axis of the light emitting unit 22 with respect to the outside air flowing from both sides in the direction orthogonal to the rotation axis of the light emitting unit 22, it is good without blocking this outside air. Therefore, high heat dissipation efficiency can be secured. Therefore, the LED 26 can be cooled more satisfactorily.

なお、本実施形態の車両用灯光装置１１における複数のＬＥＤを有する発光ユニットの外側をカバーで覆いこのカバーと発光ユニットとの隙間を介して外気をＬＥＤに直接導く構造は、ヘッドランプ以外のフォグランプ、ターンシグナルランプ、テールランプ、ストップランプおよびバックランプのいずれの車両用灯光装置にも適用可能である。   Note that the structure in which the outside of the light emitting unit having a plurality of LEDs in the vehicle lighting device 11 of the present embodiment is covered with a cover and the outside air is directly guided to the LEDs through the gap between the cover and the light emitting unit is a fog lamp other than a headlamp. The present invention can be applied to any vehicle lighting device such as a turn signal lamp, a tail lamp, a stop lamp, and a back lamp.

本発明の一実施形態の車両用灯光装置を示す斜視図である。1 is a perspective view showing a vehicular lamp device according to an embodiment of the present invention. 本発明の一実施形態の車両用灯光装置を示す分解斜視図である。1 is an exploded perspective view showing a vehicular lamp device according to an embodiment of the present invention. 本発明の一実施形態の車両用灯光装置の要部断面図である。It is principal part sectional drawing of the vehicle lamp device of one Embodiment of this invention.

符号の説明Explanation of symbols

１１ 車両用灯光装置
１３ カバーレンズ（カバー）
２２ 発光ユニット
２６ ＬＥＤ
２７ 放熱フィン
４０ 取入口
Ｓ 隙間
Ｓ３ 空間
11 Vehicle Lighting Device 13 Cover Lens (Cover)
22 Light emitting unit 26 LED
27 Radiation fin 40 Inlet S Clearance S3 Space

Claims (3)

複数のＬＥＤを有する発光ユニットの外側をカバーで覆ってなる車両用灯光装置であって、前記カバーと前記発光ユニットとの隙間を介して外気を前記ＬＥＤに直接導くことを特徴とする車両用灯光装置。   A vehicular lamp device in which a light emitting unit having a plurality of LEDs is covered with a cover, wherein the outside air is directly guided to the LEDs through a gap between the cover and the light emitting unit. apparatus. 車体前部に設けられるものであって、前記発光ユニットよりも前側に、前記隙間に外気を取り入れる取入口が設けられていることを特徴とする請求項１記載の車両用灯光装置。   The vehicular lighting device according to claim 1, wherein the vehicular lighting device is provided at a front portion of a vehicle body, and an intake port for taking outside air into the gap is provided in front of the light emitting unit. 前記発光ユニットが回動可能に設けられることで該発光ユニットの回動軸線と直交する方向における両側方に該発光ユニットの回動を許容する空間が設けられ、該空間が前記隙間の一部を構成しており、前記発光ユニットの前記ＬＥＤに対し反対側には、前記発光ユニットの回動軸線に直交する方向に沿って広がる放熱フィンが前記回動軸線に沿う方向に配列して複数設けられていることを特徴とする請求項１または２記載の車両用灯光装置。
By providing the light emitting unit so as to be rotatable, spaces for allowing the light emitting unit to rotate are provided on both sides in a direction orthogonal to the rotation axis of the light emitting unit, and the space serves as a part of the gap. A plurality of heat dissipating fins extending along a direction perpendicular to the rotation axis of the light emitting unit, arranged in a direction along the rotation axis. The vehicular lamp device according to claim 1, wherein the vehicular lamp device is provided.
JP2003354216A 2003-10-14 2003-10-14 Vehicular lighting device Withdrawn JP2005122945A (en)

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JP2021113332A (en) * 2004-12-21 2021-08-05 ハネウェル・インターナショナル・インコーポレーテッドHoneywell International Inc. Stabilized iodocarbon compositions
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JP2007157729A (en) * 2005-12-07 2007-06-21 Visteon Global Technologies Inc Headlight assembly having integrated reflector and heat sink
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US7883249B2 (en) 2006-12-11 2011-02-08 Toyoda Gosei Co., Ltd. Lighting device for vehicle
DE102007042625A1 (en) * 2007-09-08 2009-03-12 GM Global Technology Operations, Inc., Detroit Modular light arrangement for vehicle, particularly personal vehicle, has housing and partial transparent cover plate between which housing interior is defined
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