Patent ID: 8047682

Claim:
An LED street lamp assembly, comprising: a central member having a first LED module fixed to a top surface thereof; a plurality of lamps attached to a circumference of the central member and each having a second LED module therein; a plurality of sensors each mounted in one of the lamps; and a controlling and driving circuit board received in the central member for receiving signal sent out by the sensors; wherein when there is a goer approaches the LED street lamp assembly, the sensors are activated to send out signal to the controlling and driving circuit board to turn on the second LED modules of the lamps one by one as the goer comes closer and closer to the lamp assembly, and when the goer passes by and goes away from the LED street lamp assembly, the sensors stop sending out signal to the controlling and driving circuit board to switch off the second LED modules of the lamps one by one as the goer goes away from the lamp assembly farther and farther; wherein when the goer is approaching, the lamp nearest to the coming goer is turned on firstly, and when the goer is going away, the lamp turned on firstly is firstly switched off; wherein the central member has a plurality of inserting extrusions formed at a circumference thereof, a receiving tube projecting from an end of each of the lamps and engagingly receives one of the inserting extrusions to fix the lamp onto the circumference of the central member; and wherein each of the lamps comprises a supporting frame, a heat sink covering an opening of the supporting frame, the second LED module being attached to the heat sink and accommodated in the supporting frame.