JP2005063754A5 - - Google Patents

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Publication number
JP2005063754A5
JP2005063754A5 JP2003290515A JP2003290515A JP2005063754A5 JP 2005063754 A5 JP2005063754 A5 JP 2005063754A5 JP 2003290515 A JP2003290515 A JP 2003290515A JP 2003290515 A JP2003290515 A JP 2003290515A JP 2005063754 A5 JP2005063754 A5 JP 2005063754A5
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JP
Japan
Prior art keywords
leds
light source
headlamp according
headlamp
concave mirror
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JP2003290515A
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Japanese (ja)
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JP4251941B2 (en
JP2005063754A (en
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Priority to JP2003290515A priority Critical patent/JP4251941B2/en
Priority claimed from JP2003290515A external-priority patent/JP4251941B2/en
Publication of JP2005063754A publication Critical patent/JP2005063754A/en
Publication of JP2005063754A5 publication Critical patent/JP2005063754A5/ja
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Publication of JP4251941B2 publication Critical patent/JP4251941B2/en
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Claims (12)

凹面鏡と、複数のＬＥＤを面状に並べて形成した発光面を有する面光源とを備え、この面光源を前記凹面鏡に対向させて該凹面鏡の光軸の外に配置し、前記凹面鏡に向かって前記面光源から射出された光が該凹面鏡で反射されることにより所定方向を照射することを特徴とするヘッドランプ。   A concave mirror, and a surface light source having a light emitting surface formed by arranging a plurality of LEDs in a plane, the surface light source is disposed opposite to the concave mirror and disposed outside the optical axis of the concave mirror, and is directed toward the concave mirror. A headlamp that irradiates a predetermined direction by reflecting light emitted from a surface light source by the concave mirror. 開口面を有し、凹面鏡の反射面が開口面に対向するように該凹面鏡を収容するヘッドランプケースを備え、
面光源は、放熱フィンを有するヒートシンクに固着され、前記放熱フィンが前記ヘッドランプケースの外部に突出するように配置されていることを特徴とする請求項１記載のヘッドランプ。 A headlamp case having an opening surface and containing the concave mirror so that the reflecting surface of the concave mirror faces the opening surface;
2. The headlamp according to claim 1, wherein the surface light source is fixed to a heat sink having a heat radiating fin, and the heat radiating fin is disposed so as to protrude outside the head lamp case. ヘッドランプケースを覆うカバーを備え、
前記カバーと前記ヘッドランプケースとの間に、放熱フィンに向けて送風するための通風口を有することを特徴とする請求項２記載のヘッドランプ。 With a cover that covers the headlamp case,
The headlamp according to claim 2, further comprising a vent hole for blowing air toward the heat radiating fin between the cover and the headlamp case. 複数のＬＥＤを面状に並べて形成した発光面を有する面光源を備え、前記面光源を所定の角度を有するように保持する光源モジュールを設けたことを特徴とする請求項１記載のヘッドランプ。2. The headlamp according to claim 1, further comprising a surface light source having a light emitting surface formed by arranging a plurality of LEDs in a plane, and a light source module for holding the surface light source so as to have a predetermined angle. 面光源を構成する複数のＬＥＤに電流を供給する電源と、
速度を検出する速度センサと、
前記速度センサにより速度がゼロであることが検出された場合に前記電源から前記複数のＬＥＤへ供給する電流を減少させる制御回路
とを備えたことを特徴とする請求項１記載のヘッドランプ。 A power supply for supplying current to a plurality of LEDs constituting the surface light source;
A speed sensor for detecting the speed;
The headlamp according to claim 1, further comprising: a control circuit that reduces a current supplied from the power source to the plurality of LEDs when the speed sensor detects that the speed is zero. 電源から複数のＬＥＤに供給する電流はゼロより大きいことを特徴とする請求項５記載のヘッドランプ。6. The headlamp according to claim 5, wherein a current supplied from the power source to the plurality of LEDs is larger than zero. 電源から複数のＬＥＤに供給する電流は時限的要素を持って減少させることを特徴とする請求項５記載のヘッドランプ。6. The headlamp according to claim 5, wherein a current supplied from the power source to the plurality of LEDs is decreased with a time factor. エンジン回転数あるいはパーキングブレーキに基づいて走行中を判断すると共に走行中と判断した時は電源から複数のＬＥＤに供給する電流を低減する制御を禁止することを特徴とする請求項５記載ヘッドランプ。6. The headlamp according to claim 5, wherein when traveling is determined based on an engine speed or a parking brake, and when it is determined that traveling is in progress, control for reducing current supplied from a power source to a plurality of LEDs is prohibited. 面光源の温度を検出する温度センサを備え、
前記温度センサにより所定以上の温度が検出された場合に電源から複数のＬＥＤへ供給する電流を減少させる制御回路
とを備えたことを特徴とする請求項１記載のヘッドランプ。 It has a temperature sensor that detects the temperature of the surface light source,
The headlamp according to claim 1, further comprising: a control circuit that reduces a current supplied from the power source to the plurality of LEDs when a temperature equal to or higher than a predetermined temperature is detected by the temperature sensor. 温度センサは、
複数のＬＥＤの近傍に設けられたサーミスタから成ることを特徴とする請求項５記載のヘッドランプ。 The temperature sensor
6. The headlamp according to claim 5, comprising a thermistor provided in the vicinity of the plurality of LEDs. 温度センサは、
複数のＬＥＤの少なくとも１つの順方向電圧降下を検出する電圧センサから成ることを特徴とする請求項９記載のヘッドランプ。 The temperature sensor
The headlamp according to claim 9, comprising a voltage sensor for detecting at least one forward voltage drop of the plurality of LEDs. ヘッドランプケースの周囲に遮熱部材を備えたことを特徴とする請求項１に記載ヘッドランプ。   The headlamp according to claim 1, further comprising a heat shield member around the headlamp case.
JP2003290515A 2003-08-08 2003-08-08 head lamp Expired - Lifetime JP4251941B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003290515A JP4251941B2 (en) 2003-08-08 2003-08-08 head lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003290515A JP4251941B2 (en) 2003-08-08 2003-08-08 head lamp

Publications (3)

Publication Number Publication Date
JP2005063754A JP2005063754A (en) 2005-03-10
JP2005063754A5 true JP2005063754A5 (en) 2007-12-20
JP4251941B2 JP4251941B2 (en) 2009-04-08

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JP2003290515A Expired - Lifetime JP4251941B2 (en) 2003-08-08 2003-08-08 head lamp

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