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Projection display device

A technology for display devices and projection parts, applied in projection devices, optics, instruments, etc., can solve the problems of the main body of the projector being overturned and the weight of the mirror, etc., and achieve the effect of lowering the position of the center of gravity

Inactive Publication Date: 2011-11-16
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the above-mentioned projectors, the weight of the reflector becomes large
[0007] Therefore, when the projector is installed vertically, the position of the center of gravity in the offset direction is largely deviated toward the side of the mirror, and at the same time, the position of the center of gravity in the vertical direction becomes higher, so the projector body tends to be tilted. shift direction overturn

Method used

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Examples

Experimental program
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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0045] figure 1 and figure 2 It is a figure which shows the external appearance structure of a projector. figure 1 (a) is a perspective view of the projector viewed from the front, figure 1 (b) is a perspective view of the projector viewed from the rear. in addition, figure 2 is the bottom view of the projector. It should be noted that, for the convenience of explanation, figure 1 (a), (b) and figure 2 Arrows are drawn to indicate the front, rear, left, and right directions, respectively. Hereinafter, arrows indicating front, rear, left, and right directions are similarly drawn as necessary in other drawings.

[0046] The projector of this embodiment is a so-called short-throw type projector. refer to figure 1 , the projector includes a main body casing 1 having a substantially rectangular parallelepiped shape. The main body case 1 is composed of a lower c...

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Abstract

The present invention aims to provide a projection display device with an inclined projection structure in the longitudinal direction being stably arranged without costing time and energy of a user. The projection display device comprises a main body casing (1), a light modulating unit (15) and a projection optical unit (17). The projection optical unit (17) includes a projection lens unit (101) and a reflector (102), and the reflector (102) is configured to shift from the optical axis of the projection lens unit (101) to the bottom side of the main body casing (1). A space (S) produced through the dislocation of the projection lens unit (101) and the reflector (102) is provided with a main control circuit substrate (210) and a support (250) made of metal, wherein the support made of metal supports the light modulating unit (15) and the projection optical unit (17) with respect to the main body casing (1), and keeps the main control circuit substrate (210) in the inner portion of the support (250).

Description

technical field [0001] The present invention relates to a projection display device that modulates light from a light source with a light modulation element and magnifies and projects it onto a projected surface, and more particularly relates to a display device that uses an image on a light modulation element between a projection lens part and a mirror part as a display device. A projection display device that forms an intermediate image and enlarges and projects the intermediate image with a mirror. Background technique [0002] Conventionally, in projection display devices such as liquid crystal projectors (hereinafter referred to as "projectors"), the projection optical system has been widened in order to shorten the distance between the screen and the projector. In addition, along with the widening of the angle of view, a projector having a configuration for oblique projection has been proposed in which projection light emitted from the projector is projected toward a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/16
CPCG03B21/28G03B21/16
Inventor 吉村太一神原稔昌李在炫
Owner SANYO ELECTRIC CO LTD