Patent ID: 7607781

Claim:
A heat-dissipating device for a projection apparatus in order to lower temperature by airflow, the heat-dissipating device comprising: a receptacle body having a lateral left wall formed with a left air vent; a lamp unit disposed in said receptacle body, and including a burner, a reflector surrounding said burner, a glass plate disposed in front of said reflector, wherein an air inlet and an air outlet are formed on said reflector, and said air inlet and said air outlet are respectively disposed on the left side and the right side of said glass plate; a fan unit mounted on said receptacle body and covering said left air vent for generating the airflow to flow into said receptacle body; and a nozzle disposed within said receptacle body between said left air vent and said lamp unit, wherein said nozzle and said left air vent define a channel between said nozzle and said left air vent in spatial communication with said air inlet for guiding air from said fan unit into the interior of said lamp unit.