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Projection display apparatus

A display device, projection technology, applied in projection devices, TVs, color TVs, etc., can solve problems such as difficult keystone distortion correction

Inactive Publication Date: 2013-03-06
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to have a projection type display device whose top surface portion is oriented upward so tilted that a video image is being projected on the screen, which causes a problem that it is difficult to correct keystone distortion of a video image projected from the tilted device.

Method used

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Examples

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Embodiment Construction

[0024] Below, will refer to Figure 1-6 A projection type display device according to an embodiment of the present invention will be described. Common elements shown in the figures have the same symbols. The projection type display device according to the embodiment of the present invention is not limited to the following forms.

[0025] Description will be made in the following order.

[0026] 1. Outline structure of projection display device

[0027] 2. The structure of the bottom part

[0028] 3. The structure of the cover

[0029] 4. Description of dust receiving part

[0030]

[0031] First refer to figure 1 and figure 2 A schematic configuration of a projection-type display device will be described.

[0032] figure 1 is a perspective view of a projection-type display device with its top portion oriented upward, and figure 2 is a perspective view of a projection-type display device with its bottom portion oriented upward.

[0033] Such as figure 1 and fi...

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PUM

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Abstract

A projection display apparatus includes: a substantially box-shaped enclosure having a bottom surface portion, the bottom surface portion having an ventilation groove and an air inlet formed through a wall of the ventilation groove; an air sucking fan provided in the enclosure and forming an air flow flowing through the air inlet into the enclosure, and a filter through which the air flowing through the air inlet into the enclosure passes.

Description

technical field [0001] The present invention relates to projection type display devices such as liquid crystal projectors and CRT projectors. Background technique [0002] Projection-type display devices such as liquid crystal projectors and CRT projectors have a light source and optical components that receive light from the light source. The heat generated in the light source increases the temperature of the light source and optical components. Therefore, the projection type display apparatus is provided with an air inlet and an air suction fan for cooling the light source and optical components. [0003] An air inlet of some projection type display devices is formed through a side of a substantially box-shaped housing. However, it is difficult to secure a sufficient opening area for the intake port formed through the side portion of the case. In addition, it is necessary to provide a duct through which air passes between the air inlet and the suction fan, which is disa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16G03B21/14H04N5/74
CPCG03B21/16G02B27/0006H04N9/3144
Inventor 粟根悟目黑弘行
Owner SONY CORP
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