METHOD FOR ALARMING BREAKDOWN FAN OF LED HEAD-LAMP OF VEHICLE

摘要

PURPOSE: A method is provided to improve the lifespan of an LED by analyzing and transmitting a signal when a fan is out of order and enabling a user to replace the fan. CONSTITUTION: A noise, which flows into or is discharged from the power line of a vehicle, is removed through an input power filter(S10). A fan is protected when power is reversely connected to by including a reverse battery protection(S20). A voltage, which is inputted through a regulator(S30), is converted according to the operating voltage of a fan motor driver(S40). The fan is driven by the fan motor driver.