| 摘要 |
The present invention relates to a device for driving LEDs and more specifically, to a device for driving LEDs using an AC direct drive manner, capable of driving LEDs connected in series in reverse order by starting with an LED located in the end before a certain amount of power is supplied, and driving the LEDs connected in series in order if a power having a certain size is supplied, rather than measuring the size of a rectified power and driving the LEDs connected in series in order based on the measured size of the power; thereby equalizing all the power consumption of the LEDs to equalize the life span of the LEDs regardless of the order of the serial connection of the LEDs and unifying the brightness of all the LEDs connected in series. [Reference numerals] (110) Power unit; (120) Rectifying unit; (131) Comparing unit; (133) First control unit; (135) Second control unit; (150) Power measuring unit |
