Adjustable projection device for smart classroom

Abstract

The invention discloses an adjustable projection device for a smart classroom, and relates to the technical field of projection equipment. The adjustable projection device comprises a fixed pipe; a top plate is fixed below the fixed pipe; first side plates are fixed to the lower surface of the top plate side by side; the fixed pipe is rotationally connected with an adjusting shaft sleeve; an adjusting pipe is in clearance fit in the fixed pipe; a threaded channel is formed in the inner wall of the adjusting shaft sleeve; an adjusting column matched with the threaded channel is fixed to the side wall of an adjusting pipe; second side plates are fixed to the lower end of the adjusting pipe through connecting plates; a bottom plate is fixed on the two second side plates; and the top plate andthe two first side plates are matched with the bottom plate and the two second side plates to form a closed box structure. According to the adjustable projection device, the vertical position of theadjusting pipe is adjusted through rotation of the adjusting shaft sleeve, and the problem that the height of an existing projector is inconvenient to adjust is solved. The top plate and the two firstside plates are matched with the bottom plate and the two second side plates to form the closed box body, so that the problems that the existing projector is prone to happening dust accumulation, andthe projection effect and the service life are affected are solved.

Description

technical field [0001] The invention belongs to the technical field of projection equipment, and in particular relates to an adjustable projection device used in a smart classroom. Background technique [0002] A projector is an optical instrument that uses optical elements to magnify the outline of a workpiece and project it onto a screen. With the diversification of teaching, at present, there will be multimedia classrooms or smart classrooms in every school. In the classroom, the teaching content can be projected onto the projection board through a projector, making the teaching more vivid and improving the fun of teaching. [0003] Existing projectors are often hung on the top of the classroom by a fixed rod, and the height of the projector is fixed after installation. In actual use, it is often impossible to perform full projection because the height of the projection board is inconsistent with the projection height of the projector, and It is very inconvenient in the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an adjustable projection device for smart classrooms, which connects the adjusting sleeve and the adjusting tube through the fixed tube, and realizes the adjustment of the upper and lower positions of the adjusting tube through the rotation of the adjusting sleeve, which solves the problem of the height of the existing projector. The problem of inconvenient adjustment

By setting the top plate and the two first side plates and the bottom plate and the two second side plates to cooperate with each other to form an airtight box, it solves the problem that the existing projector is easy to accumulate dust, which affects the projection effect and service life.

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