Patent ID: 7874710
Filing Date: 2011-01-25
Classification: F21K,F21V,F21W,F21Y,H04M,Y10S

Abstract:
1. A light-emitting diode (LED) lamp, comprising: a lamp housing having a first cap defining an accommodating space with a first cap sidewall, a plurality of through slots passing through said first cap sidewall, wherein the accommodating space joins an environment through the first cap through slots; an LED light source disposed in the accommodating space; a heat sink disposed in the accommodating space and connected to the LED light source, the heat sink comprising a pedestal and a plurality of heat dissipation fins connected to the pedestal, an air convection channel being located between each respective two adjacent heat dissipation fins, wherein the heat dissipation fins are surrounded by the through slots; a fan disposed in the accommodating space; and a control circuit disposed in the lamp housing and electrically connected to the LED light source; wherein the lamp housing further comprises: wherein said heat dissipating fins are displaced each from the other and positioned between said through slots of said first cap, each of said through slots being in radial alignment with a respective air convection channel; wherein the fan and the LED light source are disposed on two opposite sides of the pedestal of the heat sink respectively, and the fan is surrounded by the heat dissipation fins of the heat sink; wherein the air from the environment is driven by the fan to flow into the accommodating space via the first cap through slots, pass through the air convection channels, the control circuit, and leave the accommodating space via the openings of the second cap sidewall.