실시예에 따른 엘이디 구동장치는 구동 전원을 공급하는 제1 컨버터와, 상기 제1 컨버터에 연결되며 다수의 LED가 직렬 연결된 제1 LED 어레이부와, 구동 전원을 공급하는 제2 컨버터와, 상기 제2 컨버터에 연결되어 다수의 LED가 병렬 연결된 제2 LED 어레이부와, 상기 제1 LED 어레이부의 온/오프를 제어하는 신호 공급부와, 상기 신호 공급부로부터 신호를 공급받아 상기 제2 LED 어레이부의 LED를 개별적으로 제어하기 위해 온/오프시키는 제1 시프트 레지스터와, 상기 제1 시프트 레지스터의 온/오프 신호에 따라 상기 제2 LED 어레이부의 LED에 개별적으로 전류를 공급하는 전류 제어부를 포함할 수 있다. 실시예는 전력 소비가 많은 영역에는 정전류 제어방식의 LED 구동장치를 사용하고, 전력 소비가 적은 영역에서는 정전압 제어방식의 LED 구동장치를 사용함으로써, 고휘도의 광을 안정적으로 발생시킬 수 있는 효과가 있다.

    An LED driving device of an embodiment of the present invention may comprise: a first converter supplying driving power; a first LED array unit connected to the first converter, in which a plurality of LEDs are connected in series; a second converter supplying driving power; a second LED array unit connected to the second converter, in which a plurality of LEDs are connected in parallel; a signal supply unit controlling to turn on and off the first LED array unit; a first shift register which receives a signal from the signal supply unit to individually control the LEDs of the second LED array unit while turning the same on and off; and a current control unit which individually supplies a current to the LEDs of the second LED array unit corresponding to the on/off signal of the first shift register. Therefore, according to an embodiment, an LED driving device of a constant current control method is used in an area with a high electricity consumption, and an LED driving device of a constant voltage control method is used in an area with a low electricity consumption, thereby stably generating light of high luminance.


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    Title :

    LED DRIVER AND VEHICLE LAMP HAVING THE SAME


    Additional title:

    엘이디 구동장치 및 이를 포함하는 차량용 램프


    Publication date :

    2024-03-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H05B ELECTRIC HEATING , Elektrische Heizung / 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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