Sanyo Electric Co., Ltd.

Sanyo Technology Center (shenzhen) Co., Ltd.

Shenzhen Huaqiang Sanyo Technology Design Co., Ltd.

Xianglin Zhang

Shoji Okazaki

Toshihiro Saruwatari

Tadashi Renbutsu

Yanshan Huang

Wentian Tang

Qiang Lv

Xiangfei Kong

Lei Cao

So Suzuki

Taichi Yoshimura

Chen Chen

Takaharu Adachi

Wanjun Zheng

Yufeng Yang

Xiangfen Kong

Jieming Liang

Wenming Wu

Jieyang Wu

A projection display device includes a light source; an optical system which modulates light from the light source, and emits the modulated light; a projecting portion which enlarges and projects the light emitted from the optical system; a cabinet which houses the light source, the optical system, and the projecting portion; an opening which is formed in one surface of the cabinet to allow mounting or dismounting of an optical component constituting the optical system, or the light source; a cover which covers the opening; and a holding portion which holds the cover in such a manner that the cover is allowed to slide in a direction along the one surface.

Projection display device

A projection display device includes a light source, a reflector, and a fixing portion. The device further includes a first air supply portion and a second air supply portion; a first air drawing portion which separates the cooling air from the first air supply portion into streams of the cooling air to guide one of the streams into an interior of the reflector in a first direction and to guide the other of the streams to the fixing portion in a second direction; and a second air drawing portion which separates the cooling air from the second air supply portion into streams of the cooling air to guide one of the streams into the interior of the reflector in a third direction and to guide the other of the streams to the fixing portion in a fourth direction.

This invention provide a projector apparatus enabled to lower its exhaust air temperature by adding only minor modifications to the existing structure, without altering its basic structure. The liquid crystal projector apparatus of the invention has a casing () for accommodating therein a light source (), an optical system adapted to construct imaging light in response to a beam of light received from the light source, a power supply (), and a cooling unit () mounted on the side wall of the casing () to cool the components in the casing. Provided on the inner wall of the casing is an air inspiration mechanism () in association with the exhaust unit (), whereby the exhaust unit () can inspire ambient air through the air inspiration mechanism to lower the temperature of the air to be expired from the exhaust unit.

Projector apparatus

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

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

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.

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.

Growing community of inventors

Shenzhen, China

Xianglin Zhang