Abstract: A cooling device for projector, comprising a light source, an exhaust fan, an air directing fan, an air duct, air inlet windows, an optical engine, a circuit board, a light cut, and a power supply to constitute a projector device with high brightness and high contrast. The projector includes a design that directs hot air flow directly into fan blades of an exhaust fan, thereby effectively reducing adverse effects and solving problems of conventional technology, such as failure to direct hot air flow into the fan blades of the exhaust fan, resulting in excessively high average temperature in the fan hub area that is in alignment with the hot air current, and high working temperature of motor bearings, control circuits, rotors and stators in the fan hub, so that the fan hub can be operating under lower temperatures, thereby enhancing normal performance, effective working life and reliability of the fan and the projector.

Abstract: The present invention comprises a polarizer adhered on a flange plate at the top end of a L-shape base, an aslant surface on one side of the base, two sleeve screws protruded from the center of the aslant surface, an air duct defined between an upper base and a lower base of a Z-shape fixed base, two slots disposed on the lower base for receiving the sleeve screws, and two fixing bolts securing the washers onto the sleeve screw to limit the fixed base on the aslant surface of the base. A supporting surface is formed at a flange disposed downward at both ends of the upper base of the fixed base for gluing a half-wave plate. An adjusting mechanism protruded from the lower side of the fixed base extends into a recess at the lower end of the aslant surface; a screw hole is disposed on a side of the base and having an adjusting slot with its end propping one side of the adjusting mechanism; and an elastic member with its ends respectively fixed to a side of the base and a hole of the adjusting mechanism.

Abstract: The present invention comprises a polarizer adhered on a flange plate at the top end of a L-shape base, an aslant surface on one side of the base, two sleeve screws protruded from the center of the aslant surface, an air duct defined between an upper base and a lower base of a Z-shape fixed base, two slots disposed on the lower base for receiving the sleeve screws, and two fixing bolts securing the washers onto the sleeve screw to limit the fixed base on the aslant surface of the base. A supporting surface is formed at a flange disposed downward at both ends of the upper base of the fixed base for gluing a half-wave plate. An adjusting mechanism protruded from the lower side of the fixed base extends into a recess at the lower end of the aslant surface; a screw hole is disposed on a side of the base and having an adjusting slot with its end propping one side of the adjusting mechanism; and an elastic member with its ends respectively fixed to a side of the base and a hole of the adjusting mechanism.

Abstract: The present invention sucks in the air from the fan at the top of the imaging assembly of the optical engine and blows the air from the air duct device downward. Some of the air is guided by the diversion board, aslant guiding surface, and aslant isolating board of the air duct device and blown into the imaging assembly for cooling the optical components. Some of the air is guided through a first air duct, a second air duct, and a third air duct extended from the outside of this main body respectively to the outer surface of the light valves for heat dissipation. Further, some of the airflow is guided into a branch air duct and blown to a vent of the imaging assembly of the optical engine. By means of the changing direction diversion board, the airflow is guided towards the plarizer module such that the heat at the projection lens of the plarizer module can fully be dissipated, and flown out from a vent on the other side.

Abstract: The cooling apparatus for illumination system of optical engine of the present invention includes: an illumination system that has a lamp base for its light source, wherein the lamp base has an air duct body fixed on one side of the lamp base, wherein there is at least one partition separating the air duct body into a plurality of air ducts of different surface areas, and an external air duct extending one of the air ducts from underneath the air duct body to outside of the air duct body, wherein a fan installed on the air duct body takes in air through each of the air ducts and the external air duct to cool the illumination system , thus improving the cooling efficiency of the fans, while reducing the volume of cooling air needed from the fans, lowering the cost and reducing the noise from the fans.

Abstract: The present invention relates to a reflective liquid crystal image kernel having an air duct unit on the external case, and the air duct unit having an axial fan blowing downward, wherein the air duct unit being separated into a front air duct and a rear air duct by partition, and a first air duct is being disposed in the front air duct, and a guide plane having both of its lateral sides aslant downward to guide part of the air flow blown from the axial fan to the split air duct of each light valve on the outer side of the air duct unit to cool the outer surface of the three light valves fixed on the outer case of the reflective liquid crystal image kernel, and the air blown downward from the axial fan passes through the front and the rear air ducts of the air duct unit directly, and passing though the ventilation holes of the external case into the optical components such as the X-plate, polarizer, half wave plate, and X-cube such that a single fan is used to guide and effectively use the air flow through th

Abstract: A cooling device for projector, comprising a light source, an exhaust fan, an air directing fan, an air duct, air inlet windows, an optical engine, a circuit board, a light cut, and a power supply to constitute a projector device with high brightness and high contrast. The projector includes a design that directs hot air flow directly into fan blades of an exhaust fan, thereby effectively reducing adverse effects and solving problems of conventional technology, such as failure to direct hot air flow into the fan blades of the exhaust fan, resulting in excessively high average temperature in the fan hub area that is in alignment with the hot air current, and high working temperature of motor bearings, control circuits, rotors and stators in the fan hub, so that the fan hub can be operating under lower temperatures, thereby enhancing normal performance, effective working life and reliability of the fan and the projector.