Patent ID: 8317362

Claim:
A light emitting diode (LED) lamp, comprising: a lamp body; an LED module mounted on the lamp body and comprising a plurality of LEDs connected with each other in series into an LED string; and a switching member mounted on the lamp body, the switching member being operable to select the LED lamp to work in N type of modes including modes I 1 , I 2 , . . . I n which are corresponding to n different connecting points of the LED string, wherein n is an integer number; wherein in mode I x , Q x ones of the LEDs are turned on, a corresponding outputting power of the LED lamp is W x ; in mode I y , Q y ones of the LEDs are turned on, a corresponding outputting power of the LED lamp is W y ; if x>y, then Q x >Q y and W x >W y ; and, if x<y, then Q x <Q y and W x <W y , wherein x, y are integer numbers; wherein the switching member comprises a fixing part and an operating part, the operating part being electrically connected with a negative pole of a power source and turnable to connect with one of different connecting points I 1 , I 2 , . . . I n disposed on the fixing part and electrically connected to the n different connecting points of the LED string.