Back to results
US 2011/0216287 A1Published application
Video projector
AssigneeSanyo Electric Co., Ltd.
InventorsSatoshi Kitamura, Shinya Noda
Life of this patent
Estimating the term…
Abstract
A video projector including a lamp cooling system that cools a light source lamp. The lamp cooling system includes an airflow deflection unit that varies the direction in which cooling air flows when a projection direction of the video projector changes. The airflow deflection unit uses gravitational force to automatically change the direction in which cooling air flows so that the cooling air is concentrated at an upper portion of the arc tube regardless of the changed video projector.
Claims14
A video projector comprising:
- a housing;
- a light source lamp accommodated in the housing and including an optical axis, an arc tube, and a reflector that reflects light generated by the arc tube;
- and
- a lamp cooling system that uses air to cool the arc tube and includes an airflow deflection unit, wherein when the housing is rotated about the optical axis of the light source lamp to change a projection direction of the video projector, the airflow deflection unit automatically changes a direction in which cooling air flows using gravitational force so that the cooling air is concentrated at an upper portion of the arc tube regardless of the changed projection direction.
1 more element
Dependencies are inferred from the claim text.