Sanyo Electric Co., Ltd.

Sanyo Technology Center (Shenzhen) Co., Ltd.

Shenzhen Huaqiang Sanyo Technology Design Co., Ltd.

Tadashi Renbutsu

Shoji Okazaki

Yanshan Huang

Toshihiro Saruwatari

Xiangfei Kong

Xianglin Zhang

Yun Wang

Qiang Lv

Yi Jun Guan

Wentian Tang

Wanjun Zheng

Yanyun Yan

Xiangdong Liang

Xiaoling Mao

Xiaolin Mao

Taichi Yoshimura

Takaharu Adachi

Hiroshi Iwaki

Yoshiharu Mita

Akihiko Suto

Satoshi Hirose

Jieyang Wu

Xiangfen Kong

Tomonari Watanabe

Jiro Miyazaki

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

A liquid crystal projection apparatus having an image synthesizing unit including a color synthesization prism having an upper surface, a lower surface facing the upper surface, and three light incident faces between the upper and lower surfaces; an upper prism pedestal provided on the upper surface of the color synthesization prism; a lower prism pedestal provided on the lower surface of the color synthesization prism; an upper liquid crystal panel holder provided on the upper prism pedestal and having first jointing sections, a lower liquid crystal panel holder provided on the lower prism pedestal and having second jointing sections; three liquid crystal panels; and three liquid crystal panel mounting members securely fixing thereon the three liquid crystal panels, the three mounting members arranged on the respective three incident faces of the color synthesization prism joining the first jointing sections located in association with the respective incident faces to corresponding second jointing sections located in association with the corresponding incident faces.

Liquid crystal projection apparatus utilizing image synthesizing unit with liquid crystal panel holders

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 apparatus and a lamp fixation structure for use with the projector apparatus are disclosed. The lamp fixation structure has a lower holder, which includes an integrally formed lower holder lens section and a lower holder lamp section. The lower holder lens section defines a lens fitting slot for fixing a lens, and a lower holder lamp section defines a lamp fitting slot for fixing a lamp. The lens fixing slot includes an upper holder connected to the lower holder. The lamp fixation structure also includes an integrally formed metal holder, which has an elastic top plate, elastic lateral plates, a front plate, an elastic bottom plate, and elastic jointing plates. The inventive lamp fixation structure of the projector apparatus consists of a fewer components and can be assembled in a simple manner, yet it is highly wrought.

Projector apparatus including a lower holder having lens and lamp fixing slots

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

In a projection video display system, display devices are irradiated with light emitted from a light sourcehoused in a body case, and a video image is projected to the outside of the body case. The system includes: a cooling fan for cooling the display devices; and an air passage for guiding air generated by driving the cooling fan to the display devices. Openings for making the display devices communicate with outside air are formed in positions corresponding to at least the display devices in the body case.

Projection video display system

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.

A light source device () includes a light source () constructed by a light emitter () surrounded by a reflector (); and a supporting member () for holding the reflector (), and passages of cooling air are formed above and below the reflector (). First and second openings () and () as passages of cooling air are opened in upper and lower portions, respectively, of the reflector (). Near the opening () on the lower side, a wind direction switching member () is disposed on the supporting member (). The wind direction switching member () makes cooling air from the opening () flow upward to a side of the light emitter () in a state where the supporting member () is placed on a desk, and makes the cooling air flow directly to an upper portion of the light emitter () via the opening () in a state where the supporting member () is hung from a ceiling.

Light source device and projection video display device having the same

An image forming apparatus includes a photosensitive drum. A transfer roller is arranged in a manner that a periphery of the transfer roller is brought close to a peripheral surface of the photosensitive drum, and a PE sensor is arranged in front of the transfer roller, and paper leading end sensor is arranged in back of the transfer roller. When a paper supplied from a paper hopper is detected by the PE sensor, the photosensitive drum and the transfer roller are rotated, and therefore, the paper is fed until a leading end thereof is detected by the leading end sensor. The photosensitive drum and the transfer roller are independently driven by a main motor and a transfer motor, respectively. A printing operation is started in response to a print command, the paper is further fed by the photosensitive drum and the transfer roller, and then, when the leading end sensor does not detect the paper, the photosensitive drum and the transfer roller are stopped.

Transfer roller controlled to position the paper in registration with

A paper feeding stand on which a recording apparatus such as a copying machine is mounted and which contains paper for recording and feeds the paper to the recording apparatus through intermediate rollers provided at the position opposing the paper entry of the recording apparatus according to the rotation of the intermediate rollers. When paper jam occurs between the intermediate rollers and the recording apparatus, the intermediate rollers are rotated in the reversal direction to return the paper to the intermediate roller section, and then the intermediate rollers are moved in the direction intersecting at right angles with the axial direction thereof to expose the intermediate rollers and the jammed paper to the outside so that the paper can be removed easily and surely without tearing.

Growing community of inventors

Hyogo, Japan

Tadashi Renbutsu