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Projection type display apparatus

一种影像显示、投影的技术，应用在放映装置、照明装置、冷却/通风/加热改造等方向，能够解决灯壳体复杂结构、成本上升等问题

Inactive Publication Date: 2011-04-06
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the technique disclosed in Japanese Patent Application Laid-Open No. 10-106307 mentioned above, since the mechanism for guiding the cooling air is incorporated in the lamp housing holding the discharge lamp, the lamp housing becomes a complicated structure, which becomes a factor of cost increase.

Method used

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Examples

Experimental program
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Embodiment 1

[0028] A projection-type image display device is a device that condenses light emitted from a light source by using a condensing device such as a mirror or a lens, passes through a display element such as a liquid crystal panel to form an image, and projects the image to the outside through a projection lens.

[0029] Figure 1a and Figure 1b It is an overall configuration diagram of the projection-type image display device of the present embodiment and a diagram showing how each configuration unit is separated from the overall configuration diagram.

[0030] The projection image display device of this embodiment includes: a lamp unit 1 including a light source, an optical engine 2 for generating images, a projection lens 3 for projecting images, a power supply unit 4, a panel channel 5, a cooling fan 6, a lamp channel 7, and the like.

[0031] Here, discharge lamps such as high-pressure mercury lamps are often used as light sources of projection-type image display devices. ...

Embodiment 2

[0079] In Embodiment 1, a projection type image display device including the movable rectifying plate 17 is described. That is, the movable rectifying plate 17 rotates around the support shaft by its own weight in order to increase The moment generated by gravity uses a material with a high specific gravity.

[0080] In this embodiment, an example will be described in which, as in the first embodiment, the moment is not increased by simply increasing the specific gravity of the material for the movable rectifying plate that rotates around the support shaft by its own weight.

[0081] In addition, in the projection-type image display device of this embodiment, the movable rectifying plate 17 in Embodiment 1 is replaced by the movable rectifying plate of this embodiment, and other structures and actions are the same as those of the projection-type image display device of Embodiment 1. The structure and operation of the display device are the same, so descriptions other than the ...

Embodiment 3

[0091] In Embodiment 1 and Embodiment 2, the projection type image display device including the movable rectifying plate 17 that rotates by its own weight around the support shaft 16 is described.

[0092] In this embodiment, a projection type image display device including a movable rectifying plate 20 that slides in the direction of gravity by its own weight will be described.

[0093] In addition, in the projection-type image display device of this embodiment, the movable rectifying plate 17 of the first embodiment is replaced with the movable rectifying plate 20, and other structures and operations are the same as those of the projection-type image display device of the first embodiment. , and the operation are the same, and therefore descriptions other than the movable rectifying plate 20 are omitted.

[0094] FIG. 9 shows a cross-sectional structure of the projection type image display device of this embodiment.

[0095] As described in Embodiment 1, the cooling air out...

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PUM

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Abstract

A projection type display apparatus in accordance with the present invention is provided with a lamp unit including a light source, a cooling fan cooling the light source, and a cooling wind guide tube guiding a cooling wind generated by the cooling fan to the lamp unit, and the cooling wind guide tube is structured such as to have a movable type rectification plate which is movable by its own weight, and cools the light source without being affected by an installed direction of the projection type display apparatus.

Description

technical field [0001] The present invention relates to a projection type image display device for projecting and displaying images. Background technique [0002] In Japanese Patent Application Laid-Open No. 10-106307, in its paragraphs 0008 and 0009, it is disclosed that the following light source device "comprises: a lampshade having a light projection surface opened on one surface, supporting the lamp inside, and the installation posture is selected to be up and down. Direction; cooling fan, which is arranged opposite to the side of the above-mentioned lampshade; and an air guide direction changing part, which has nothing to do with the selection of the installation posture of the above-mentioned lampshade, and always guides the wind from the above-mentioned cooling fan to the inside of the above-mentioned lampshade. The device "the wind guide direction changing part is formed by openings formed on the upper and lower sides of the lampshade and a shutter that selects the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16H05K7/20F21Y101/00
CPCG03B21/16
Inventor 小林幸浩片山猛井上弘之星野茂树
Owner MAXELL HLDG LTD
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