LED (light-emitting diode) lamp of external direct current power supply system

The utility model relates to an LED (light-emitting diode) lamp, particularly an LED (light-emitting diode) lamp of an external direct current power supply system. The LED lamp of the external direct current power supply system comprises an LED lamp and a drive unit for driving the LED lamp. The LED lamp is characterized by also comprising a direct current power supply system arranged on the external part of the LED lamp for converting alternating current power supply into direct current power supply. Compared with the prior art, the direct current power supply system is arranged on the external part of the LED lamp without directly acting on the LED lamp body, so that the radiating property of the LED lamp is enhanced, and the service life is prolonged.