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Projector and anti-dust device thereof

A dust-proof device and technology for projectors, applied in projection devices, instruments, optics, etc., can solve the problems of dust entering the inside of the cabinet, no dust-proof measures, and inability to completely isolate dust, etc.

Inactive Publication Date: 2012-08-15
SHENZHEN ACTO DIGITAL VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary projectors do not have dust-proof measures around the projection lens, and dust can easily enter the inside of the casing from the lens hole on the casing
Especially for engineering projectors, the projection lens is generally a movable lens. In order to ensure that the projection lens can move up and down and left and right, there must be a certain gap between the projection lens and the lens hole of the casing. The existence of this gap Become a channel for dust to enter the interior of the projector casing, making the projector less dust-proof around the projection lens
Very few projectors put a dustproof plate on the lens barrel to prevent dust. The sealing performance of the dustproof plate is poor so it cannot completely isolate the dust, and when the projection lens moves up and down or left and right, the dustproof plate will produce damage to the projection lens. Seriously affect the projection effect

Method used

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  • Projector and anti-dust device thereof
  • Projector and anti-dust device thereof
  • Projector and anti-dust device thereof

Examples

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Embodiment Construction

[0030] The above-mentioned projector and its dust-proof device are further described below through specific embodiments and accompanying drawings.

[0031] see figure 1 and figure 2 , a projector 100 according to an embodiment includes a casing 20 , a projection lens 40 and a projector dustproof device 60 .

[0032] Please also see image 3 , the case 20 includes a bottom case 22 and a top case 24 . The top case 24 covers the bottom case 22 .

[0033] The top case 24 is a curved structure and has a side 242 . A lens hole 2422 is defined on the side surface 242 . The lens hole 2422 is substantially a circular hole. A lens frame 2424 is formed around the lens hole 2422 . The lens frame 2424 protrudes from the outside of the casing 20 . In this embodiment, the end of the lens frame 2424 away from the top shell 24 is formed with a mounting groove 2426 surrounding the outer wall of the lens frame 2424 .

[0034] The projection lens 40 includes a lens barrel 42 and a lens ...

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Abstract

The invention relates to an anti-dust device of a projector. The projector comprises a first elastic fastening hood, a second elastic fastening hood, an elastic connecting piece, a first elastic sealing piece and a second elastic sealing piece, wherein the first elastic fastening hood is tightly sheathed on a shell of the projector, and the second elastic fastening hood is tightly sheathed on a lens cone of a projection lens; one end of the first elastic sealing piece is connected with the first elastic fastening hood, the other end of the first elastic sealing piece is connected with the elastic connecting piece, and a plurality of first wrinkles axially distributed along the projection lens are formed on the first elastic sealing piece; one end of the second elastic sealing piece is connected with the second elastic fastening hood, the other end of the second elastic sealing piece is connected with one side, far away from the first elastic sealing piece, of the elastic connecting piece, and a plurality of second wrinkles axially distributed along the projection lens are formed on the second elastic sealing piece. The anti-dust device of the projector can be used for better sealing the interval between the projection lens and a lens hole so as to effectively prevent dust, and can not generate any applied force to the projection lens, so as to ensure that the projection effect of the projector is better.

Description

technical field [0001] The invention relates to projection equipment, in particular to a projector and a dustproof device thereof. Background technique [0002] Based on the imaging principle of the projector, there should be very little dust in the environment when the projector is working, otherwise it will pollute the optical components, affect the brightness and picture quality of the projector, and make the projection effect of the projector poor. And dust can also cause the temperature of internal electronic components to rise, causing malfunctions and even burning out the projector. Therefore, the dustproof quality of the projector is directly related to the projection quality and service life of the projector. [0003] Ordinary projectors have no dust-proof measures around the projection lens, and dust can easily enter the inside of the casing from the lens hole on the casing. Especially for engineering projectors, the projection lens is generally a movable lens. I...

Claims

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Application Information

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IPC IPC(8): G03B21/14G03B21/00
Inventor 曾万军王先模李榕
Owner SHENZHEN ACTO DIGITAL VIDEO TECH
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