Patent ID: 7140734
Filing Date: 2006-11-28
Classification: G03B,H04N

Abstract:
1. An image projection apparatus to enlarge and project image data on a screen using light emitted from a lamp, the apparatus comprising: a housing having a top panel, a bottom panel, and plurality of side panels; a duct which includes a first absorption hole disposed in a first one of the side panels through which the air is absorbed, and a main exhaust hole disposed in a second one of the side panels through which the air is exhausted, connects elements that need to be cooled in series, and forms an air-flow path to cool the elements; and at least one fan to control air flow via the air duct, wherein the elements are arranged from the first absorption hole to the main exhaust hole according to an operating temperature of the elements and comprise a power supply unit to supply power, a lamp, and a ballast to operate the lamp, and the at least one fan comprises a first fan arranged between the power supply unit and the ballast and a second fan arranged between the ballast and the lamp.