| 摘要 |
The present invention relates to an LED driving circuit for a radiation area to drive an LED lighting device installed in the radiation area such as a nuclear power plant, which comprises: a circuit protection and filter circuit unit (110) circuit-connected to a commercial power input terminal (10) in which commercial AC power is inputted so as to block surge voltage applied with the commercial AC power, and removing noise on the inputted AC power; and a hybrid module (120) including a rectification circuit unit (121) which is circuit-connected to an output terminal of the circuit protection and filter circuit unit (110) to convert the filtered AC power into DC power, a power factor compensation circuit unit (122) which compensates a power factor by controlling the phase difference of voltage and current of the DC power outputted from the rectification circuit unit (121), and a constant current control circuit unit (123) which converts the AC power outputted from the power factor compensation circuit unit (122) to be constantly outputted in a current size to allow an LED module (20) to be driven to emit light, and having the rectification circuit unit (121), the power factor compensation circuit unit (122), and the constant current control circuit unit (123) circuit-constituted in one IC chip. |
