PROBLEM TO BE SOLVED: To provide a vehicular head lamp capable of achieving miniaturization of a lamp body by efficiently accommodating a resistance circuit which reduces light amount variation of an LED.SOLUTION: In a vehicular head lamp 1 which is configured by accommodating LED substrates 40, 50 in a lamp body, a resistance substrate 30 which is configured separately from the LED substrates 40, 50, which has a plurality of resistances and which functions as a drive circuit for adjusting a driving current of LED light sources 42, 52 is arranged in the lamp body. The LED substrates 40, 50 comprise: the low beam side LED substrate 40 for supporting the low beam side LED light source 42; and the high beam side LED substrate 50 for supporting the high beam side LED light source 52. The low beam side LED substrate 40 and the high beam side LED substrate 50 are oriented in parallel with each other and in the horizontal direction, they are offset arranged in a vehicle body longitudinal direction, and the resistance substrate 30 is arranged at a position between a rear end of the LED substrate 40 of a vehicle front side and a rear end of the LED substrate 50 of a vehicle rear side by orienting in a vertical direction.SELECTED DRAWING: Figure 3
【課題】LEDの光量ばらつきを低減する抵抗回路を効率よく収納して灯体の小型化を図ることができる車両用ヘッドランプを提供する。【解決手段】灯体内にLED基板40,50を収納してなる車両用ヘッドランプ1において、LED基板40,50と別体に構成され、複数の抵抗を有してLED光源42,52の駆動電流を調整する駆動回路として機能する抵抗基板30を灯体内に配置する。LED基板40,50が、ロービーム側LED光源42を支持するロービーム側LED基板40と、ハイビーム側LED光源52を支持するハイビーム側LED基板50とからなり、ロービーム側LED基板40およびハイビーム側LED基板50を互いに平行かつ水平方向に指向させると共に、車体前後方向にオフセット配置し、車体前方側のLED基板40の後端と車体後方側のLED基板50の後端との間の位置に抵抗基板30を鉛直方向に指向して配置する。【選択図】図3
VEHICULAR HEAD LAMP
車両用ヘッドランプ
2016-04-25
Patent
Elektronische Ressource
Japanisch
IPC: | F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen |