Patent ID: 8390202

Claim:
An external electrical-control lamp with improved structure comprising: a light-emitting diode lamp ( 1 ) having: a circuit board ( 11 ); at least one light-emitting diode ( 12 ) installed on the circuit board ( 11 ); a thermal module ( 13 ) providing a heat-dissipating function to the light-emitting diode ( 12 ); and a rectifying circuit ( 14 ) providing a rectified power to the light-emitting diode ( 12 ); and an external power box ( 2 ) having an AC-to-DC conversion circuit ( 21 ), a voltage/current feedback circuit ( 22 ), an isolated transformer ( 23 ), a constant-current output circuit ( 24 ), and a power factor correction circuit ( 25 ); wherein one end of the external power box ( 2 ) is electrically connected to the rectifying circuit ( 14 ) of the light-emitting diode lamp ( 1 ), thus providing electricity power to the light-emitting diode lamp ( 1 ).