Winding device of projection screen for display

Abstract

The invention relates to the technical field of display equipment, in particular to a winding device of a projection screen for display, sliding rails are fixed to the left end and the right end of the bottom of a winding shell, limiting blocks are fixed to the lower ends of the sliding rails, the sliding rails are arranged on the back face of the projection screen, and electromagnet plates are fixedly embedded in the front side walls of the sliding rails and fixed to the lower ends of the sliding rails. The electromagnet plates and the iron sheets are movably and magnetically attracted; the iron sheets are fixed on left and right side walls of the back of the projection screen; the sliding blocks are arranged on the sliding rails in an up-down sliding mode, an arc-shaped groove is formedin the front end corner of the sliding blocks, a magnetic strip is fixed in the arc-shaped groove, and the magnetic strip and the iron hemming rod are movably and magnetically attracted; a scraping plate is fixed on the bottom wall of the winding shell on the front side surface of the projection screen; and the lower edge of the scraping plate is propped against the front side surface of the projection screen. When the projection screen is rolled up, dust adsorbed on the surface of the projection screen due to static electricity can be effectively removed, meanwhile, the effect of supporting the projection screen can be achieved, the stability of the projection screen is guaranteed, and the projection display effect is improved.

Description

technical field [0001] The invention relates to the technical field of display equipment, in particular to a winding device for a projection screen for display. Background technique [0002] The projection screen is one of the most commonly used products in the peripheral equipment of the projector. The projection screen is the abbreviation of the projection screen; if the projection screen is properly matched with the projector, high-quality projection effects can be obtained. [0003] Since the projection screen does not need to be used anytime and anywhere, when it is not needed, the projection screen needs to be put away by a winding device. When the projection screen is in use, it will absorb some dust on its surface due to static electricity. If it is not cleaned up in time, it will easily cause the screen to be unclear and affect the display effect; at the same time, when the current projection screen is put down for display, there is no fixing mechanism on the lower ...

AI Technical Summary

Problems solved by technology

[0003] Since the projection screen does not need to be used anytime and anywhere, when it is not needed, the projection screen needs to be put away by a winding device. When the projection screen is in use, it will absorb some dust on its surface due to static electricity. If it is not cleaned up in time, it will easily cause the screen to be unclear and affect the display effect; at the same time, when the current projection screen is put down for display, there is no fixing mechanism on the lower edge, making it in a suspended state. Even if there is a wall on the back of the projection screen, its There is also a certain gap between the wall and the projection screen, and the projection screen will be unstable under the action of external force, which will affect the display effect

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