Automatic dedusting type teaching projection curtain

Abstract

The invention relates to the technical field of teaching equipment, and discloses a self-dust-removing projection screen for teaching, which includes a mounting frame, grooves are opened on both sides of the inner cavity of the mounting frame, and the first drive is fixedly installed in the groove on the right side. Motor, the output shaft of the first driving motor is fixedly installed with a winding shaft, the side of the winding shaft away from the first driving motor is fixedly installed with a winding shaft seat located in the groove on the left side, and the inside of the winding shaft is provided with a winding slot, and a projection screen with one end extending to the bottom of the installation frame is fixedly installed in the winding slot. The projection screen for self-cleaning teaching uses a second drive motor to fix the projection screen in the dust removal tank, and the second drive motor drives the dust removal shaft to rotate in the dust removal chamber, so that the dust removal roller drives the cleaning brush on the cleaning cloth to rotate , In the process of rolling and unfolding the projection screen, the dust can be automatically removed to ensure a good projection effect of the projection screen.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to a self-dust-cleaning projection screen for teaching. Background technique [0002] Projection screens are generally used in combination with projectors. Projection screens are also called projection screens. They are generally divided into commercial screens, household screens and engineering screens. There are many types of projection screens, which can be divided into high, medium and low grades. According to different uses, there are many kinds of specifications and sizes, generally divided into household use, school use and KTV use. [0003] At present, when the projection screen is used for teaching, because there is a lot of dust in the classroom, the projection screen is easy to be contaminated with a lot of dust when it is used. If it is not cleaned in time, it will easily affect the projection effect of the projection screen, which is not conducive to the teac...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a self-dust-cleaning projection screen for teaching, which has the advantages of automatic dust removal, etc., and solves the problem that when the screen is used for teaching, the projection screen is easily contaminated due to the large amount of dust in the classroom. A lot of dust, if it is not cleaned in time, it will easily affect the projection effect of the projection screen, which is not conducive to the teacher's lectures

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