An 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 invention includes a fixed pipe; a top plate is fixed at the lower end of the fixed pipe; first side plates are fixed side by side on the lower surface of the top plate; ; The side wall of the adjustment pipe is fixed with an adjustment column adapted to the threaded channel; the lower end of the adjustment pipe is fixed with a second side plate through the connecting plate; the two second side plates are fixed with a bottom plate; the top plate and the two first side plates and the bottom plate and the two The two side plates cooperate with each other to form a closed box structure. The invention realizes the adjustment of the upper and lower positions of the adjustment pipe by adjusting the rotation of the shaft sleeve, and solves the problem of inconvenient height adjustment of the existing projector. The top plate and the two first side plates, the bottom plate and the two second side plates cooperate with each other to form a closed box, which solves the problem that the existing projector is easy to accumulate dust and affects the projection effect and service life.

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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