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Projector type automatic dustproof system

A projector, automatic technology, applied in optics, instruments, projection devices, etc., can solve the problems of affecting picture quality, inability to set up protective filters to prevent dust, contamination of lenses and projector circuit boards, etc.

Inactive Publication Date: 2015-11-18
深圳市中影院线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In various environments, especially where there is a lot of dust and wind and sand, foreign matter such as dust, bugs, and even water droplets will enter and accumulate on the lens surface and ventilation holes of the machine, which will pollute the lens and the internal optical components of the projector. Circuit board, a long time will seriously affect the picture quality, or cause damage to the circuit board and cooling system
[0003] Generally, the air inlet of the projector can be equipped with a filter to prevent dust, but the lens and the air outlet must be open when working. There is no way to install a similar protective filter to prevent dust. The projector used on the ceiling, It's also hard to keep the lens cap and drape on at all times

Method used

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  • Projector type automatic dustproof system
  • Projector type automatic dustproof system

Examples

Experimental program
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Embodiment Construction

[0020] combine figure 1 , 2 As shown, the projector automatic dustproof system includes a projector front cover 1, a lens cover 2, and a stepping motor 3. A lens hole 4 is opened on the inside of the projector front cover relative to the position of the lens on the projector. Both sides of the lens hole are provided with parallel and opposite guide rails 5, and the lens cover includes a plate body, which is provided with parallel end edges, and the plate body is connected to the guide rails through its end edges, A tooth structure 6 protruding from the plate is provided along one end edge of the plate body, and the tooth structure 6 is connected to the stepping motor.

[0021] A limiting structure 7 is provided at the tail end of the guide rail.

[0022] A push rod 8 is arranged on the tail of the end of the plate body away from the tooth structure.

[0023] A rack 9, a spring 10, and a position detection element 11 are arranged on the inside of the front cover of the proje...

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PUM

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Abstract

The invention discloses a projector type automatic dustproof system. The system comprises a projector front cover, a lens cover and a stepper motor. The inner side of the projector front cover is equipped with a lens hole in a position relative to a projector upper lens. Parallel guide rails opposite to each other are disposed on two sides of the lens hole. The lens cover includes a plate body. The plate body is provided with parallel end edges. The plate body is connected to the guide rails through the end edges. The end edge of one side of the plate body is equipped with a tooth structure that protrudes from the plate body. The tooth structure is connected with the stepper motor. The lens cover and an air outlet baffle plate are driven through the miniature stepper motor and transmission of a rack and pinion, therefore, when a machine is working, the lens cover and an air outlet channel are opened automatically, and when the machine is shut down, the lens cover and an air outlet channel are closed automatically. In this way, the machine can be enclosed and have a dustproof function, the service life of the machine can be prolonged, and the maintenance cost of the machine can be reduced.

Description

technical field [0001] The invention relates to an automatic dustproof system for a projector. Background technique [0002] At present, projectors are widely used in the education industry, business occasions and personal home use. In various environments, especially where there is a lot of dust and wind and sand, foreign matter such as dust, bugs, and even water droplets will enter and accumulate on the lens surface and ventilation holes of the machine, which will pollute the lens and the internal optical components of the projector. The circuit board, after a long time, will seriously affect the picture quality, or cause damage to the circuit board and cooling system. [0003] Generally, the air inlet of the projector can be equipped with a filter to prevent dust, but the lens and the air outlet must be open when working. There is no way to install a similar protective filter to prevent dust. The projector used on the ceiling, It's also difficult to keep the lens cap an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14
Inventor 曾维
Owner 深圳市中影院线有限公司
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