Abstract: Disclosed is an LED lighting device which is easily assembled and disassembled and has a stable assemblability without structural shaking. The LED lighting device is able to improve a heat radiating characteristic and optical efficiency. The LED lighting device according to the embodiment includes a lower case; a light source unit disposed on one side of the lower case; a light guide plate disposed in parallel with the light source unit; and an upper case disposed on the light guide plate and coupled to the lower case in an attachable and removable way.

Abstract: A light emitting unit includes a plurality of light emitting devices. A control apparatus includes a rectifier for converting an alternating current (AC) signal into a ripple signal by rectifying the AC signal. A ripple signal adjuster reduces a level difference between maximum and minimum levels of the ripple signal, and outputs the resultant ripple signal as a drive signal. A turning-on controller controls turning-on of the light emitting devices in accordance with a level variation of the drive signal.

Abstract: Disclosed is an LED lighting device which is easily assembled and disassembled and has a stable assemblability without structural shaking. The LED lighting device is able to improve a heat radiating characteristic and optical efficiency. The LED lighting device according to the embodiment includes a lower case; a light source unit disposed on one side of the lower case; a light guide plate disposed in parallel with the light source unit; and an upper case disposed on the light guide plate and coupled to the lower case in an attachable and removable way.