Projection device convenient to adjust height

Abstract

The invention belongs to the projection equipment technical field and discloses a projection device convenient to adjust height. The projection device comprises a balance frame; a traction rope is slidably connected onto the outer side of the balance frame; the right end of the traction rope is fixedly connected with a rotating tube; a support rod is rotationally connected inside the rotating tube; the left side of the rotating tube is fixedly connected with a hand crank limiting plate; the left end of the traction rope is fixedly connected with a balance plate; the bottom of the balance plateis fixedly connected with a fixing main tube; the left side and right side of the fixing main tube are fixedly connected with balance rods. With the projection device convenient to adjust height of the invention adopted, it is convenient for a user to adjust the height and angle of projection boxes according to use conditions; the use and adjustment of the projection device by the user can be facilitated; the difficulty of adjustment operation can be decreased; manpower for climbing for adjustment can be saved; a lot of convenience can be brought to projection explanation and teaching; and the use efficiency of the projection device can be improved; and the work efficiency of the projection explanation and teaching can be improved.

Description

Technical field [0001] The invention relates to the technical field of projection equipment, in particular to a projection device which is convenient to adjust the height. Background technique [0002] A projector, also known as a projector, is a device that can project images or videos onto the screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal. Projectors are currently widely used in homes, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP. [0003] The existing projection device is fixedly installed on the roof by the projector fixing frame, but the general projector fixing frame only has the function of installing and fixing the projector, and cannot adjust the height or angle of the projector according to different usage conditions. The user brings a lot of inconvenience to explain the use, and i...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a projection device that is convenient for height adjustment, which has the advantages of being able to facilitate the user to adjust the height and angle of the projector, and solves the problem that the existing projection device is difficult to adjust the height. many inconveniences

Images