AC-DRIVEN LED LIGHTING APPARATUS WITH MULTI-CELL LED

摘要

A light-emitting diode (LED) lighting apparatus includes a rectification unit connected to an alternating current (AC) power source, and an LED light emitting module including m multi-cell LEDs each having n light emitting cells, kth light emitting cells of the respective m multi-cell LEDs being connected to each other in series to form a kth light emitting cell group, n being a positive integer of 2 or greater, m being a positive integer of 1 or greater, and k being a positive integer from 1 to n. The rectification unit is configured to supply a rectified voltage to the LED light emitting module through full-wave rectification of an AC voltage from the AC power source. The LED light emitting module is configured to emit light upon receiving the rectified voltage from the rectification unit, and to control sequential driving of first to nth light emitting cell groups according to a voltage level of the rectified voltage.

主权项

1. A light-emitting diode (LED) lighting apparatus, comprising:
a rectification unit connected to an alternating current (AC) power source; and an LED light emitting module comprising m multi-cell LEDs each comprising n light emitting cells, kth light emitting cells of the respective m multi-cell LEDs being connected to each other in series to form a kth light emitting cell group, n being a positive integer of 2 or greater, m being a positive integer of 1 or greater, and k being a positive integer from 1 to n, wherein: the rectification unit is configured to supply a rectified voltage to the LED light emitting module through full-wave rectification of an AC voltage from the AC power source; the LED light emitting module is configured to emit light upon receiving the rectified voltage from the rectification unit; and the LED light emitting module is configured to control sequential driving of first to nth light emitting cell groups according to a voltage level of the rectified voltage.