To provide a vehicular LED bulb unit, with which an irradiation range may be adjusted and a heat generation amount of the entire bulb may be controlled without requiring mechanical operation control.SOLUTION: There is provided an LED bulb unit 10 comprising an LED bulb 12 having a plurality of LED chips 22 on a substrate and control means 26 for controlling light emission of the LED bulb 12. Each of the LED chips 22 is defined with irradiation area corresponding to it. The control means 26 increases or decreases the current value of current to be supplied to the LED chips 22 based on the number of irradiation areas, the irradiation area requiring higher intensity than the other irradiation areas, and the total heat generation.SELECTED DRAWING: Figure 4
【課題】機械的な動作制御を不要としつつ、照射範囲の調整を可能とし、かつバルブ全体としての発熱量を制御することのできる車両用LEDバルブユニットを提供する。【解決手段】基板に複数のLEDチップ22を備えたLEDバルブ12と、LEDバルブ12の発光を制御する制御手段26とを備えたLEDバルブユニット10であって、各LEDチップ22にはそれぞれ、対応する照射領域が定められ、制御手段26は、照射領域の数と、他の照射領域よりも高い輝度を必要とする照射領域、および総発熱量に基づいて、電流を供給するLEDチップ22に対する電流値の増減を図ることを特徴とする。【選択図】図4
VEHICULAR LED BULB UNIT
車両用LEDバルブユニット
2020-04-02
Patent
Electronic Resource
Japanese
IPC: | 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 |
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