JP2005222785A - Vehicular lighting fixture - Google Patents

Vehicular lighting fixture Download PDF

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JP2005222785A
JP2005222785A JP2004028536A JP2004028536A JP2005222785A JP 2005222785 A JP2005222785 A JP 2005222785A JP 2004028536 A JP2004028536 A JP 2004028536A JP 2004028536 A JP2004028536 A JP 2004028536A JP 2005222785 A JP2005222785 A JP 2005222785A
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lamp
led
main body
lamp chamber
air
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JP4265427B2 (en
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Katsuichi Fukushima
勝一 福島
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Ichikoh Industries Ltd
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Ichikoh Industries Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • 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
    • F21S45/50—Waterproofing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem: when a LED is disposed in a lamp chamber in a conventional vehicular lighting fixture, an environmental temperature rises due to heat in the lamp chamber and light emitting performance is deteriorated, since there is no means to dissipate heat in the lamp chamber to the outside. <P>SOLUTION: A lamp unit 5 having the LED as a light source and a cooling means 6 are disposed in the lamp chamber 2. The cooling means has a body 12 comprising a material with high thermal conductivity and forming a hollow box shape. An air inlet 13 is provided on one side of the body 12, and an air outlet 14 is provided on the other side of the body 12. Cooling action is carried our by the air flowing in from the air inlet 13, passing through the body 12, and flowing out from the air outlet 14. Thereby, since the environmental temperature of the LED in the lamp chamber 2 can be kept low, high light emitting performance of the LED can be secured. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、たとえば、ヘッドランプなどのＬＥＤを光源とする車両用灯具に関するものである。詳しくは、ＬＥＤの冷却構造を備える車両用灯具に関するものである。   The present invention relates to a vehicular lamp using, for example, an LED such as a headlamp as a light source. Specifically, the present invention relates to a vehicular lamp provided with an LED cooling structure.

この種の車両用灯具は、従来からある（たとえば、特許文献１および特許文献２）。以下、この車両用灯具について説明する。なお、括弧つきの符号は、特許文献１、特許文献２にそれぞれ対応する。特許文献１の車両用灯具は、灯室を区画するケース（５）と、ＬＥＤ（１２）を光源とするランプユニットと、前記ＬＥＤ（１２）の回路基板（１１）に設けたヒートシンク（１４）とを備え、前記回路基板（１１）を前記ケース（５）に取り付けて、前記ＬＥＤ（１２）を前記ケース（５）内に収容し、かつ、前記ヒートシンク（１４）を外部に露出させる。一方、特許文献２の車両用灯具は、灯室を区画する本体ケース（８）およびカバー部（９）およびアウターレンズ（６）と、ＬＥＤ（２）を光源とするランプユニットと、前記ＬＥＤ（２）の光源基板（３）に設けたヒートシンク（４）とを備え、前記光源基板（３）を前記カバー部（９）に取り付けて、前記ＬＥＤ（２）を灯室内に収容し、かつ、前記ヒートシンク（４）を外部に露出させる。   Conventionally, this type of vehicle lamp is known (for example, Patent Document 1 and Patent Document 2). Hereinafter, the vehicle lamp will be described. Reference numerals in parentheses correspond to Patent Document 1 and Patent Document 2, respectively. The vehicular lamp of Patent Document 1 includes a case (5) that partitions a lamp chamber, a lamp unit that uses an LED (12) as a light source, and a heat sink (14) that is provided on the circuit board (11) of the LED (12). The circuit board (11) is attached to the case (5), the LED (12) is accommodated in the case (5), and the heat sink (14) is exposed to the outside. On the other hand, the vehicular lamp of Patent Document 2 includes a main body case (8) and a cover (9) and an outer lens (6) that define a lamp chamber, a lamp unit using an LED (2) as a light source, and the LED ( A heat sink (4) provided on the light source substrate (3) of 2), the light source substrate (3) is attached to the cover part (9), the LED (2) is accommodated in the lamp chamber, and The heat sink (4) is exposed to the outside.

特許文献１の車両用灯具および特許文献２の車両用灯具は、ＬＥＤ（１２）、（２）の点灯時に発生する熱をヒートシンク（１４）、（４）を介して外部に放散（放出）させることにより、ＬＥＤ（１２）、（２）の環境温度を低く保つことができる。この結果、特許文献１の車両用灯具および特許文献２の車両用灯具は、環境温度の上昇により発光性能が低下しやすいＬＥＤ（１２）、（２）を、高い発光性能で安定した状態で光源として使用することができる。   The vehicle lamp of Patent Document 1 and the vehicle lamp of Patent Document 2 dissipate (release) the heat generated when the LEDs (12) and (2) are turned on to the outside through the heat sinks (14) and (4). Thus, the environmental temperature of the LEDs (12) and (2) can be kept low. As a result, the vehicular lamp of Patent Document 1 and the vehicular lamp of Patent Document 2 have the LEDs (12) and (2) whose light-emitting performance tends to decrease due to an increase in environmental temperature, in a stable state with high light-emitting performance. Can be used as

ところが、特許文献１の車両用灯具および特許文献２の車両用灯具は、ＬＥＤ（１２）、（２）の回路基板（１１）、電源基板（３）をケース（５）、カバー部（９）に取り付けてヒートシンク（１４）、（４）を外部に露出させるものである。このために、特許文献１の車両用灯具および特許文献２の車両用灯具は、ＬＥＤ（１２）、（２）およびヒートシンク（１４）、（４）を灯室内に配置した場合、ＬＥＤ（１２）、（２）の点灯時に発生する熱をヒートシンク（１４）、（４）を介して灯室内に放散させることができるが、灯室内に放散されてこもった熱を灯室外に放散する手段がないので、灯室内に放散されてこもった熱により環境温度が上昇してＬＥＤ（１２）、（２）の発光性能が低下するという課題がある。   However, in the vehicular lamp of Patent Document 1 and the vehicular lamp of Patent Document 2, the LED (12), the circuit board (11) of (2), the power supply board (3) are the case (5), and the cover part (9). And the heat sinks (14) and (4) are exposed to the outside. For this reason, the vehicle lamp of Patent Document 1 and the vehicle lamp of Patent Document 2 have the LED (12) when the LEDs (12), (2) and the heat sinks (14), (4) are arranged in the lamp chamber. , (2) heat generated during lighting can be dissipated into the lamp chamber via the heat sinks (14) and (4), but there is no means for dissipating the heat stored in the lamp chamber outside the lamp chamber. Therefore, there is a problem that the ambient temperature rises due to the heat dissipated in the lamp chamber and the light emission performance of the LEDs (12) and (2) is lowered.

特開２００２−１６３９１２号公報JP 2002-163912 A 特開２００３−３０７８５号公報JP 2003-30785 A

この発明が解決しようとする問題点は、従来の車両用灯具ではＬＥＤを灯室内に配置した場合、灯室内の熱を外部に放散させる手段がないので、灯室内の熱で環境温度が上昇してＬＥＤの発光性能が低下するという点にある。   The problem to be solved by the present invention is that, in the conventional vehicular lamp, when the LED is arranged in the lamp chamber, there is no means for dissipating the heat in the lamp chamber to the outside. Therefore, the light emitting performance of the LED is lowered.

この発明は、灯室内にＬＥＤと冷却手段とを配置し、前記冷却手段が、熱伝導率が高い材質からなりかつ中空の箱形形状をなす本体を有し、前記本体の一方側に空気流入口が設けられており、前記本体の他方側に空気流出口が設けられており、空気が前記空気流入口から流入して前記本体中を貫流して前記空気流出口から流出することにより、冷却作用をする手段である、ことを特徴とする。   According to the present invention, an LED and a cooling means are arranged in a lamp chamber, and the cooling means has a main body made of a material having a high thermal conductivity and has a hollow box shape, and an air flow is provided on one side of the main body. An inlet is provided, and an air outlet is provided on the other side of the main body. Air flows from the air inlet, flows through the main body, and flows out from the air outlet, thereby cooling the air. It is a means for acting.

この発明の車両用灯具は、灯室内の冷却手段の冷却作用により、灯室内の熱を外部に放散させることができるので、ＬＥＤを灯室内に配置したとしても、灯室内のＬＥＤの環境温度を低く保つことができ、ＬＥＤを高い発光性能で安定した状態で光源として使用することができる。   The vehicular lamp of the present invention can dissipate the heat in the lamp chamber to the outside by the cooling action of the cooling means in the lamp chamber. Therefore, even if the LED is arranged in the lamp chamber, the environmental temperature of the LED in the lamp chamber is reduced. The LED can be kept low, and the LED can be used as a light source in a stable state with high light emission performance.

以下に、この発明にかかる車両用灯具の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。   Embodiments of a vehicular lamp according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

以下、この実施例における車両用灯具の構成について説明する。図において、符号１は、この実施例における車両用灯具であって、ヘッドランプである。前記ヘッドランプ１は、灯室２を区画するランプハウジング３およびランプレンズ４と、前記灯室２内に配置されたＬＥＤ（図示せず）を光源とするランプユニット５と、前記灯室２内に配置された冷却手段６と、前記灯室内２に配置されたインナーパネル７を備えるものである。   Hereinafter, the configuration of the vehicular lamp in this embodiment will be described. In the figure, reference numeral 1 denotes a vehicle lamp in this embodiment, which is a headlamp. The headlamp 1 includes a lamp housing 3 and a lamp lens 4 that define a lamp chamber 2, a lamp unit 5 that uses an LED (not shown) disposed in the lamp chamber 2 as a light source, and an interior of the lamp chamber 2. And a cooling means 6 disposed in the lamp chamber 2 and an inner panel 7 disposed in the lamp chamber 2.

前記ランプユニット５は、熱伝導率が高い材質、たとえば、アルミニウムからなる取付ブラケット８に複数個、この例では１０個取り付けられている。前記１０個のランプユニット５は、前記取付ブラケット８を介して前記ランプハウジング３に上下左右に光軸調整可能に取り付けられている。   A plurality of the lamp units 5 are attached to a mounting bracket 8 made of a material having a high thermal conductivity, for example, aluminum, for example, 10 in this example. The ten lamp units 5 are attached to the lamp housing 3 via the mounting bracket 8 so that the optical axis can be adjusted vertically and horizontally.

すなわち、前記ランプハウジング３と前記取付ブラケット８との間には、上下方向の光軸調整機構の自動光軸調整機構（オートレベラー）９と左右方向の光軸調整機構１０とピボット機構１１とがそれぞれ設けられている。前記自動光軸調整機構９は、モータなどが内蔵装備されており、自動的に駆動しもしくは手動的に調整して、前記１０個のランプユニット５を左右方向の光軸調整機構１０の中心とピボット機構１１の中心とを結ぶほぼ水平軸（図示せず）回りに上下方向に回転させて、前記１０個のランプユニット５のそれぞれの光軸を自動的にもしくは手動的に調整するものである。一方、前記左右方向の光軸調整機構１０を手動的に調整して、前記１０個のランプユニット５を自動光軸調整機構９の中心とピボット機構１１の中心とを結ぶほぼ垂直軸（図示せず）回りに左右方向に回転させて、前記１０個のランプユニット５のそれぞれの光軸を手動的に調整するものである。   That is, between the lamp housing 3 and the mounting bracket 8, there are an automatic optical axis adjustment mechanism (auto leveler) 9 of a vertical optical axis adjustment mechanism, a horizontal optical axis adjustment mechanism 10, and a pivot mechanism 11. Each is provided. The automatic optical axis adjustment mechanism 9 has a built-in motor and the like, and is automatically driven or manually adjusted so that the ten lamp units 5 are located at the center of the horizontal optical axis adjustment mechanism 10. The optical axis of each of the ten lamp units 5 is adjusted automatically or manually by rotating up and down about a substantially horizontal axis (not shown) connecting the center of the pivot mechanism 11. . On the other hand, the optical axis adjustment mechanism 10 in the left-right direction is manually adjusted, and the ten lamp units 5 are connected to a substantially vertical axis (not shown) connecting the center of the automatic optical axis adjustment mechanism 9 and the center of the pivot mechanism 11. 1) The optical axis of each of the ten lamp units 5 is manually adjusted by rotating in the horizontal direction.

前記冷却手段６は、熱伝導率が高い材質、たとえば、アルミニウムからなりかつ中空の箱形形状をなす本体１２を有する。前記本体１２は、縦断面形状がＬ字形状をなす。前記本体１２の一方側には、空気流入口１３が設けられており、かつ、前記本体１２の他方側には、空気流出口１４が設けられている。この結果、前記冷却手段６は、空気（図中の実線矢印を参照）が前記空気流入口１３から流入して前記本体１２中を貫流して前記空気流出口１４から流出することにより、冷却作用をする手段である。   The cooling means 6 has a main body 12 made of a material having high thermal conductivity, for example, aluminum and having a hollow box shape. The main body 12 has an L-shaped longitudinal section. An air inlet 13 is provided on one side of the main body 12, and an air outlet 14 is provided on the other side of the main body 12. As a result, the cooling means 6 has a cooling function in which air (see solid arrows in the figure) flows in from the air inlet 13, flows through the main body 12 and flows out of the air outlet 14. It is means to do.

前記空気流入口１３は、前記灯室２から外部に突出して車両（自動車）の進行方向側に開口し、一方、前記空気流出口１４は、前記灯室２から外部に突出して車両の進行方向と逆側に開口する。前記本体１２のうち前記空気流入口１３側の端部および前記空気流出口１４側の端部と前記ランプハウジング３との間には、シール材１５が設けられていて、前記灯室２内の防水性が確保されている。   The air inflow port 13 projects outward from the lamp chamber 2 and opens to the traveling direction side of the vehicle (automobile), while the air outlet 14 projects outward from the lamp chamber 2 and travels in the vehicle. And open on the opposite side. Between the lamp housing 3 and the end on the air inlet 13 side and the end on the air outlet 14 side of the main body 12 and the lamp housing 3, a sealing material 15 is provided. Waterproofness is ensured.

前記取付ブラケット８および前記自動光軸調整機構９は、前記冷却手段６の前記本体１２に接触している。ここで、前記冷却手段６の本体１２のうち、前記自動光軸調整機構９が位置する部分には、凹部１６が設けられている。前記凹部１６に前記自動光軸調整機構９のアジャストスクリュー１７が位置する。   The mounting bracket 8 and the automatic optical axis adjusting mechanism 9 are in contact with the main body 12 of the cooling means 6. Here, a recess 16 is provided in a portion of the main body 12 of the cooling means 6 where the automatic optical axis adjustment mechanism 9 is located. An adjustment screw 17 of the automatic optical axis adjustment mechanism 9 is located in the recess 16.

以下、この実施例における車両用灯具の作用について説明する。まず、１０個のランプユニット５の光源のＬＥＤを発光させる。すると、ＬＥＤからの光は、１０個のランプユニット５からそれぞれランプレンズ４を透過して外部の道路などを所定の配光パターンで照明する。   Hereinafter, the operation of the vehicle lamp in this embodiment will be described. First, the light source LEDs of the ten lamp units 5 are caused to emit light. Then, the light from the LED passes through the lamp lens 4 from each of the ten lamp units 5 to illuminate an external road or the like with a predetermined light distribution pattern.

ＬＥＤを発光させることにより、ＬＥＤにおいて熱（図中の破線矢印を参照）が発生すると、その熱は、１０個のランプユニット５から取付ブラケット８を介して冷却手段６の本体１２に伝達され、または、１０個のランプユニット５から灯室２内を介して冷却手段６の本体１２に伝達される。冷却手段６の本体１２に伝達された熱は、本体１２内を貫流する空気により、外部に放散される。   When heat is generated in the LED by causing the LED to emit light (see the broken arrow in the figure), the heat is transmitted from the ten lamp units 5 to the main body 12 of the cooling means 6 via the mounting bracket 8, Alternatively, the light is transmitted from the ten lamp units 5 to the main body 12 of the cooling means 6 through the lamp chamber 2. The heat transmitted to the main body 12 of the cooling means 6 is dissipated outside by the air flowing through the main body 12.

一方、自動光軸調整機構９が駆動すると、１０個のランプユニット５の光軸が上下方向に自動的に調整される。このとき、自動光軸調整機構９のモータにおいて熱（同じく、図中の破線矢印を参照）が発生すると、その熱は、自動光軸調整機構９から取付ブラケット８を介して冷却手段６の本体１２に伝達され、または、自動光軸調整機構９から灯室２内を介して冷却手段６の本体１２に伝達される。冷却手段６の本体１２に伝達された熱は、本体１２内を貫流する空気により、外部に放散される。このように、この実施例における車両用灯具のヘッドランプ１は、灯室２内のＬＥＤの環境温度を低く保つことができる。   On the other hand, when the automatic optical axis adjustment mechanism 9 is driven, the optical axes of the ten lamp units 5 are automatically adjusted in the vertical direction. At this time, if heat is generated in the motor of the automatic optical axis adjustment mechanism 9 (see also the broken arrow in the figure), the heat is transferred from the automatic optical axis adjustment mechanism 9 to the main body of the cooling means 6 via the mounting bracket 8. 12 or from the automatic optical axis adjustment mechanism 9 to the main body 12 of the cooling means 6 through the lamp chamber 2. The heat transmitted to the main body 12 of the cooling means 6 is dissipated outside by the air flowing through the main body 12. Thus, the headlamp 1 of the vehicular lamp in this embodiment can keep the environmental temperature of the LEDs in the lamp chamber 2 low.

また、空気は、冷却手段６の本体１２の空気流入口１３から本体１２中に流入し、本体１２中を貫流してＬＥＤからの熱および自動光軸調整機構９からの熱を吸収し、本体１２中から空気流出口１４を経て外部に流出する。これにより、冷却手段６は、灯室２内を冷却する。   The air flows into the main body 12 from the air inlet 13 of the main body 12 of the cooling means 6, flows through the main body 12, absorbs heat from the LED and automatic optical axis adjustment mechanism 9, and 12 flows out through the air outlet 14 from inside. Thereby, the cooling means 6 cools the inside of the lamp chamber 2.

以下、この実施例における車両用灯具の効果について説明する。この実施例における車両用灯具のヘッドランプ１は、灯室２内の冷却手段６の冷却作用により、灯室２内の熱を外部に放散させることができるので、ＬＥＤを灯室２内に配置したとしても、灯室２内のＬＥＤの環境温度を低く保つことができ、ＬＥＤを高い発光性能で安定した状態で光源として使用することができる。   Hereinafter, effects of the vehicular lamp in this embodiment will be described. The headlamp 1 of the vehicle lamp in this embodiment can dissipate the heat in the lamp chamber 2 to the outside by the cooling action of the cooling means 6 in the lamp chamber 2, so that the LEDs are arranged in the lamp chamber 2. Even so, the environmental temperature of the LED in the lamp chamber 2 can be kept low, and the LED can be used as a light source in a stable state with high luminous performance.

特に、この実施例における車両用灯具のヘッドランプ１は、１０個のランプユニット５が熱伝導率が高い材質からなる取付ブラケット８に取り付けられており、この取付ブラケット８が冷却手段６の本体１２に接触しているので、ＬＥＤにおける熱を効率良く外部に放散することができる。   Particularly, in the headlamp 1 of the vehicle lamp in this embodiment, ten lamp units 5 are attached to a mounting bracket 8 made of a material having a high thermal conductivity, and the mounting bracket 8 is a main body 12 of the cooling means 6. Therefore, heat in the LED can be efficiently dissipated to the outside.

また、この実施例における車両用灯具のヘッドランプ１は、１０個のランプユニット５が取付ブラケット８を介して自動光軸調整機構９に取り付けられているので、１０個のランプユニット５の光軸を自動的にそれぞれ調整することができる。しかも、この実施例における車両用灯具のヘッドランプ１は、自動光軸調整機構９が冷却手段６の本体１２に接触しているので、自動光軸調整機構９において発生する熱をも効率良く外部に放散することができる。   Further, in the headlamp 1 of the vehicle lamp in this embodiment, ten lamp units 5 are attached to the automatic optical axis adjustment mechanism 9 via the mounting bracket 8, so that the optical axes of the ten lamp units 5 are Can be adjusted automatically. Moreover, in the headlamp 1 of the vehicle lamp in this embodiment, since the automatic optical axis adjustment mechanism 9 is in contact with the main body 12 of the cooling means 6, the heat generated in the automatic optical axis adjustment mechanism 9 is also efficiently externally applied. Can be dissipated.

さらに、この実施例における車両用灯具のヘッドランプ１は、空気流入口１３が車両の進行方向側に開口し、一方、空気流出口１４が車両の進行方向と逆側に開口するので、車両（自動車）の走行時において、大気中の空気を空気流入口１３から冷却手段６の本体１２中に流入しやすく、一方、本体１２中の空気を空気流出口１４から外部に流出させやすい。これにより、この実施例における車両用灯具のヘッドランプ１は、灯室２内をさらに効率良く冷却することができる。   Furthermore, in the headlamp 1 of the vehicle lamp in this embodiment, the air inlet 13 opens on the traveling direction side of the vehicle, while the air outlet 14 opens on the opposite side to the traveling direction of the vehicle. During travel of an automobile, air in the atmosphere tends to flow into the main body 12 of the cooling means 6 from the air inlet 13, while air in the main body 12 tends to flow out from the air outlet 14 to the outside. Thereby, the headlamp 1 of the vehicle lamp in this embodiment can cool the inside of the lamp chamber 2 more efficiently.

前記の実施例においては、車両用灯具としてヘッドランプ１について説明したが、この発明においては、ヘッドランプ１以外の車両用灯具にも適用することができる。   In the above embodiment, the headlamp 1 has been described as a vehicular lamp. However, the present invention can be applied to a vehicular lamp other than the headlamp 1.

また、前記の実施例においては、灯室２内に配置されたＬＥＤを光源とするランプユニット５および自動光軸調整機構９において発生する熱を外部に放散する例について説明する。ところが、この発明においては、ＬＥＤを光源とするランプユニット５および自動光軸調整機構９以外の部品、たとえば、ＬＥＤを制御するＬＥＤ制御回路装置などにおいて発生する熱を外部に放散するものであっても良い。   Moreover, in the said Example, the example which dissipates the heat | fever which generate | occur | produces in the lamp unit 5 and automatic optical axis adjustment mechanism 9 which use LED arrange | positioned in the lamp chamber 2 as a light source is demonstrated. However, in the present invention, heat generated in components other than the lamp unit 5 using the LED as a light source and the automatic optical axis adjustment mechanism 9, such as an LED control circuit device for controlling the LED, is dissipated to the outside. Also good.

さらに、前記の実施例においては、冷却手段６の本体１２および取付ブラケット８を、熱伝導率が高い材質、たとえば、アルミニウムから構成するものである。ところが、この発明においては、アルミニウム以外の材質、たとえば、銅や銀、あるいは、アルミニウム、銅、銀などのメッキ品などであっても良い。   Furthermore, in the said Example, the main body 12 and the attachment bracket 8 of the cooling means 6 are comprised from a material with high heat conductivity, for example, aluminum. However, in the present invention, a material other than aluminum, for example, copper or silver, or a plated product such as aluminum, copper, or silver may be used.

この発明にかかる車両用灯具の実施例を示す正面図である。It is a front view which shows the Example of the vehicle lamp concerning this invention. 同じく、ランプハウジングとインナーパネルとを除いた状態の正面図である。Similarly, it is a front view of the state which removed the lamp housing and the inner panel. 図１におけるＩＩＩ−ＩＩＩ線断面図である。It is the III-III sectional view taken on the line in FIG. 図１におけるＩＶ−ＩＶ線断面図である。It is the IV-IV sectional view taken on the line in FIG. 図１におけるＶ−Ｖ線断面図である。It is the VV sectional view taken on the line in FIG.

符号の説明Explanation of symbols

１ ヘッドランプ
２ 灯室
３ ランプハウジング
４ ランプレンズ
５ ランプユニット
６ 冷却手段
７ インナーパネル
８ 取付ブラケット
９ 自動光軸調整機構
１０ 左右方向の光軸調整機構
１１ ピボット機構
１２ 本体
１３ 空気流入口
１４ 空気流出口
１５ シール材
１６ 凹部
１７ アジャストスクリュー DESCRIPTION OF SYMBOLS 1 Headlamp 2 Lamp chamber 3 Lamp housing 4 Lamp lens 5 Lamp unit 6 Cooling means 7 Inner panel 8 Mounting bracket 9 Automatic optical axis adjustment mechanism 10 Right-and-left optical axis adjustment mechanism 11 Pivot mechanism 12 Main body 13 Air inlet 14 Air flow Outlet 15 Sealing material 16 Concave portion 17 Adjust screw

Claims (3)

ＬＥＤを光源とする車両用灯具において、
灯室を区画するランプハウジングおよびランプレンズと、
前記灯室内に配置された前記ＬＥＤを光源とするランプユニットと、
前記灯室内に配置された冷却手段と、
を備え、
前記冷却手段は、熱伝導率が高い材質からなりかつ中空の箱形形状をなす本体を有し、前記本体の一方側には、空気流入口が設けられており、前記本体の他方側には、空気流出口が設けられており、空気が前記空気流入口から流入して前記本体中を貫流して前記空気流出口から流出することにより、冷却作用をする手段である、
ことを特徴とする車両用灯具。 In a vehicular lamp using an LED as a light source,
A lamp housing and a lamp lens that partition the lamp chamber;
A lamp unit using the LED disposed in the lamp chamber as a light source;
Cooling means disposed in the lamp chamber;
With
The cooling means has a main body made of a material having high thermal conductivity and has a hollow box shape, and an air inflow port is provided on one side of the main body, and on the other side of the main body. The air outlet is provided, and the air flows from the air inlet, flows through the main body, and flows out from the air outlet, thereby performing a cooling action.
A vehicular lamp characterized by the above. 前記ランプユニットは、熱伝導率が高い材質からなる取付ブラケットに複数個取り付けられており、モータを装備する自動光軸調整機構により、光軸が自動的に調整されるように構成されており、
前記取付ブラケットまたはおよび前記自動光軸調整機構は、前記冷却手段の前記本体に接触する、
ことを特徴とする請求項１に記載の車両用灯具。 The lamp unit is attached to a plurality of mounting brackets made of a material having high thermal conductivity, and is configured so that the optical axis is automatically adjusted by an automatic optical axis adjustment mechanism equipped with a motor.
The mounting bracket or the automatic optical axis adjustment mechanism contacts the body of the cooling means;
The vehicular lamp according to claim 1. 前記空気流入口は、車両の進行方向側に開口し、前記空気流出口は、車両の進行方向と逆側に開口する、
ことを特徴とする請求項１または２に記載の車両用灯具。 The air inflow port is opened on a traveling direction side of the vehicle, and the air outflow port is opened on a side opposite to the traveling direction of the vehicle;
The vehicular lamp according to claim 1 or 2.
JP2004028536A 2004-02-04 2004-02-04 Vehicle lighting Expired - Fee Related JP4265427B2 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007087665A (en) * 2005-09-20 2007-04-05 Stanley Electric Co Ltd Vehicular lamp
JP2007289122A (en) * 2006-04-27 2007-11-08 Iwasaki Electric Co Ltd Insect catcher
JP2008078088A (en) * 2006-09-25 2008-04-03 Stanley Electric Co Ltd Vehicular led lighting fixture
JP2008077928A (en) * 2006-09-20 2008-04-03 Stanley Electric Co Ltd Vehicular led lighting fixture
JP2008218157A (en) * 2007-03-02 2008-09-18 Stanley Electric Co Ltd Vehicle headlight
JP2009140886A (en) * 2007-12-11 2009-06-25 Fisheries Agency Council Of Agriculture Executive Yuan Fishing light device
JP2010523140A (en) * 2007-04-13 2010-07-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Tray and nursery assembly for growing organic materials
WO2012053376A1 (en) * 2010-10-18 2012-04-26 シャープ株式会社 Lighting device and liquid-crystal display device
WO2024001532A1 (en) * 2022-07-01 2024-01-04 华为技术有限公司 Vehicle lamp and vehicle

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007087665A (en) * 2005-09-20 2007-04-05 Stanley Electric Co Ltd Vehicular lamp
JP4730717B2 (en) * 2005-09-20 2011-07-20 スタンレー電気株式会社 Vehicle lamp.
JP2007289122A (en) * 2006-04-27 2007-11-08 Iwasaki Electric Co Ltd Insect catcher
JP2008077928A (en) * 2006-09-20 2008-04-03 Stanley Electric Co Ltd Vehicular led lighting fixture
JP2008078088A (en) * 2006-09-25 2008-04-03 Stanley Electric Co Ltd Vehicular led lighting fixture
JP2008218157A (en) * 2007-03-02 2008-09-18 Stanley Electric Co Ltd Vehicle headlight
JP2010523140A (en) * 2007-04-13 2010-07-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Tray and nursery assembly for growing organic materials
JP4932031B2 (en) * 2007-04-13 2012-05-16 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Tray and nursery assembly for growing organic materials
JP2009140886A (en) * 2007-12-11 2009-06-25 Fisheries Agency Council Of Agriculture Executive Yuan Fishing light device
WO2012053376A1 (en) * 2010-10-18 2012-04-26 シャープ株式会社 Lighting device and liquid-crystal display device
WO2024001532A1 (en) * 2022-07-01 2024-01-04 华为技术有限公司 Vehicle lamp and vehicle

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