Patent ID: 7938544
Filing Date: 2011-05-10
Classification: G03B,H04N

Abstract:
1. A projector comprising: a housing comprising an air vent; an optical engine module disposed in the housing; a light source disposed on one end of the optical engine module for providing a light for the optical engine module, the light source having an optical axis, wherein the light source comprises: a lamp wick disposed inside the light source; a lamp cover having an opening of an front end, and a front cover combining with the opening of the front end of the lamp cover and covering the lamp wick, a system fan disposed adjacent to a first side of the light source for generating an airflow flowing from the first side toward the light source and exhausted through the air vent, wherein the system fan is disposed between the light source and a power module; and a lamp cooling fan disposed adjacent to a second side of the light source, the lamp cooling fan and the system fan disposed adjacent to different sides of the light source respectively, wherein the first side and the second side opposite to the first side are located at different sides of the optical axis of the light source, the lamp cooling fan used for generating an airflow flowing from the second side toward inside of the light source and the first side, the airflow generated by the lamp cooling fan mixing with the airflow generated by the system fan and then exhausted through the air vent, and wherein an air inlet is formed on the front cover near the second side of the light source, an air outlet is formed on the front cover near the first side, the lamp cooling fan is disposed near the air inlet correspondingly, and the airflow generated by the lamp cooling fan flows into the light source through the air inlet and flows toward the first side of the light source through the air outlet.