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Projector

A projector and glass cover technology, applied in the field of projectors, can solve problems such as drop, damage to the glass cover, and insufficient vibration reduction of the glass cover

Inactive Publication Date: 2007-10-03
FUNAI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the lampshade, including its opening, is made of aluminum alloy, then, because aluminum alloy is very strong, when encountering the situation described above, the lampshade falls from the usual height at which it is carried, the glass If the retaining part of the cover does not sufficiently dampen the vibration, there will be a problem that the corners of the glass cover will be damaged

Method used

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Embodiment Construction

[0017] FIG. 1 is a perspective view illustrating a rough structure inside a projector. The structure of this projector will be described in detail below. The lamp unit 10 includes a lampshade 3 including the shade 2 and a lamp 13 inside the lampshade 3 . The lamp 13 emits light for projecting an image. The lampshade 3 is an enclosure located outside the lamp 13 . The shield 2 is a member that shields light emitted from the lamp 13 , and is also provided with an opening portion through which light emitted from the lamp 13 and directed toward the image projection unit 11 passes. The image projection unit 11 includes an image display device such as a DMD (Digital Mirror Device) or the like and a color wheel (both of which are not shown in the drawings), and a projection lens 12, which utilizes a slave lamp The light emitted by the unit 10 projects an image on the screen. The main fans 50 and 51 blow air and thereby lower the temperature inside the chassis 9 . A part of the a...

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PUM

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Abstract

A projector includes a lamp unit. This lamp unit includes a lamp which emits light, a shield member in which an opening portion is formed which allows light emitted by the lamp to radiate to the exterior, a cover glass fitted to the opening portion, and a retention member which retains the cover glass by squeezing it against the shield member. The retention member is provided with projecting flange portions which press against the four edges of the cover glass.

Description

technical field [0001] The present invention relates to a projector equipped with a lamp unit having a lamp for projecting an image. Background technique [0002] In the prior art, projectors have been implemented using a lamp unit to project an image onto a screen in front of a projection lens. The lamp unit is covered by a shade having an opening portion in front of the lamp unit. The shade emits light from this opening portion, preventing light from leaking from other portions than the opening portion. On the opening portion, there is a cover glass which is transparent to light of a predetermined wavelength range but intercepts ultraviolet light. Therefore, the glass cover prevents ultraviolet rays included in light emitted from the light source lamp from leaking to the outside. Furthermore, in order to prevent ultraviolet rays from passing through and leaking through the shade, there is a tendency to manufacture the shade using an aluminum alloy material instead of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14F21Y101/00
CPCG03B21/20
Inventor 铃木正和
Owner FUNAI ELECTRIC CO LTD