DIMMABLE AC DRIVEN LED ILLUMINATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an AC driven LED illumination apparatus having ideal dimming characteristics over an entire section of a dimming level.SOLUTION: The present invention proposes an AC driven LED illumination apparatus including: a dimmer receiving AC power and controlling the input AC power depending on a selected dimming level to generate and output the controlled AC power; a rectifying unit receiving the input of the controlled AC power and full-wave rectifying the controlled AC power to generate and output a driving voltage; a dimming level detecting unit receiving the input of the driving voltage to detect the selected dimming level and outputting a detected dimming level signal; first to n-th LED groups receiving the input of the driving voltage to be sequentially driven depending on a control of an LED driving module; and the LED driving module determining a voltage level of the driving voltage, controlling the sequential driving of the first to n-th LED groups depending on the determined voltage level, and performing constant current control on an LED driving current on the basis of the dimming level signal.