PORT LIGHT APPARATUS

摘要

PURPOSE: A harbor light apparatus is provided to control the rotation speed of a fan attached to an LED driver, thereby effectively emitting the heat generated from the LED driver. CONSTITUTION: An LED driver(4) generates driving power which is necessary to drive a light source(2). The LED driver controls a flickering of the light source according to a PWM(Pulse Width Modulation) signal. A fan(6) is attached to the LED driver in order to emit the heat generated from the LED driver. A controller(10) generates the PWM signal for controlling the flickering of the light source. The controller controls the rotation speed of a fan proportional to the driving power offered to the light source from the LED driver.