Sanyo Electric Co., Ltd.

Sanyo Technology Center (shenzhen) Co., Ltd.

Shenzhen Huaqiang Sanyo Technology Design Co., Ltd.

Xiangfei Kong

Shoji Okazaki

Toshihiro Saruwatari

Tadashi Renbutsu

Yanshan Huang

Yun Wang

Yi Jun Guan

Wanjun Zheng

Yanyun Yan

Xiangdong Liang

Xianglin Zhang

Qiang Lv

Wentian Tang

Xiaolin Mao

Xiaoling Mao

A projector which includes a first exhaust fan discharging exhaust air from a light source lamp to exterior and a second exhaust fan discharging exhaust air from parts other than the light source lamp are arranged to be adjacent to each other. An end of the exhaust fan facing the other exhaust fan is moved to the inner side and the one exhaust fan is inclined to discharge air in an exhaust direction toward a direction along which air is discharged from the other exhaust fan. There is provided a cooling fan that blows air to an interior air blow outlet communicating with the interior of the light source lamp and exterior air blow outlets communicating with an outer surface to cool the light source lamp. The exterior air blow outlets are deviated from the center of the outer surface of the light source lamp.

Projection type image display apparatus with angled exhaust fan

In a projection image display apparatus, a noise removal filter portionis separated from a power source unit body. The separated noise removal filter portionis provided in the vicinity of a side wall of a housing on which a power source inlet is provided, and of the power source unit body, respectively. Specifically, the power source unit bodyis provided along a side wall of a front face of the horizontally-long housing of the projection image display apparatus and the noise removal filter portionis provided in a position opposed to the power source unit bodyin a side wall of the back face. As a result, even when a light source lamp has a higher output, the projection image display apparatus can achieve reduced noise by an improved cooling capability and reduced cost enabled by an efficient Electro Magnetic Compatibility (EMC) measure and the like.

Projection image display apparatus having a noise removal filter portion

A projector apparatus equipped with a metal plate structure serving as a light shield against a light source and as a heat radiator is provided. The metal plate structure is arranged over the light source to hide the light source. The metal plate structure extends farther to a cooling fan and connects to the upper end of the air expiration face of the fan. The metal plate structure thus serves as the top plate of the baffle section of the exhaust duct of the fan for leading the air expired from the fan. The metal plate structure also serves as a shield plate, which can be connected to a grounded metal piece.

Projector apparatus equipped with a structure capable of shielding radiation and dissipating heat from a light source

A projector having optical components, a power source unit, and a light source unit. The projector is capable of lowering its internal temperature utilizing: a first, second, and third fan () provided near the optical components for introducing external air from outside the projector to cool the optical components; and a fourth, fifth, and sixth exhaust fan (). The fourth fan () blows the air that was taken in by the first, second, and third fan () and has cooled the optical components, onto the light source unit to further cool the light source unit. The fifth and sixth exhaust fans () discharge the air that has cooled the light source unit and power supply unit out of the projector.

Multistage cooling system for projector

The invention enables efficient cooling of: a light source providing source light; an optical system adapted to split the source light received from the light source into three primary colors R, G, and B; and a power supply unit for supplying electric power to various electric components installed in a casing of a projector apparatus. To do so, a first fan is arranged between the light source and the power supply unit such that its air inspiration face is directed to the power supply unit and its air expiration face is directed to the light source. Further, a second fan, adapted to inspire air from within the projector apparatus, is provided in the central area of the projector apparatus. On the air expiration side of the second fan is a cooling duct for cooling the light source and optical system. In addition, a third fan for cooling a G-LCP unit and an R-LCP unit of the image synthesizing device and a fourth fan for cooling a B-LCP and an R-LCP unit of the image synthesizing device are provided in such a way that the streams of air expired from said third and fourth fans intersect each other. The invention allows operation of a projector apparatus with a fewer fans, yet achieves suppression of exhaust air temperature and noise, and cost reduction as well.

Projector apparatus

A duct was configured such that an incident side and an outgoing side of each of liquid crystal panels, andare formed with discharge ports rand r, gand g, and band bto discharge the air from fanstothrough ductsto, and at the same time, a PBSfor aligning the polarizing direction of the light from a light source lamp is formed with a discharge port pto discharge the air from the fanthrough the duct, and an incident side discharge port band an outgoing side discharge port bof the liquid crystal panelcorresponding to the blue light are formed with the ducts so as to discharge the air from the fansandwhich are different from each other. As a result, even when an amount of light per unit area of high luminance is increased, the liquid crystal panels and the polarizing plates and the PBS can be effectively cooled by three sets of the fans.

Projection type image display apparatus

The projector apparatus of the invention constructs colored imaging light by splitting a beam of light received from a light source into beams of three primary colors and inputting the beams of three primary colors in an image synthesizing device via light adjusting device. The image synthesizing device includes a prism, a prism mount for fixing the prism, LCPs, and LCP holders integral with the prism mounts for fixing the LCPs. The prism mount has a central area and multiple peripheral areas, each area in contact with the prism. The invention provides effective solution for solving reliability problems encountered in a cost reduction strategy for miniaturization of a prism and for using inexpensive plastic prism fixation members.

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Shenzhen, China

Xiangfei Kong