Patent ID: 8147109

Claim:
A heat dissipation device of a vehicle lamp, installed in a lamp room of the vehicle lamp, comprising: an interposing element, disposed in the lamp room of the vehicle lamp, for dividing the lamp room into a front partition and a rear partition, wherein the interposing element has an accommodating room, at least one air feeding channel and at least one back flow channel, a rear end of the accommodating room communicates with the rear partition, the air feeding channel communicates with the front partition and the accommodating room, and the back flow channel communicates with the front partition, the rear partition, and the accommodating room; a heat sink, disposed in the accommodating room of the interposing element, wherein at least one light emitting diode LED assembly is disposed on the heat sink; and an air supply assembly, comprising at least one air feeding fan and at least one back flow fan, wherein the air feeding fan is located in the accommodating room and has an inlet facing the air feeding channel and an outlet facing the heat sink, so as to draw air in the front partition to the rear partition through the air feeding channel, and the back flow fan is disposed in the rear partition behind the interposing element and has an inlet located in the rear partition and an outlet communicating with a rear end of the back flow channel, so as to draw air in the rear partition to the front partition through the back flow channel.