Multimedia teaching projection screen

Abstract

The invention provides a multimedia teaching projection screen, and relates to the technical field of teaching aids. The bottom of the lifting mechanism is rotationally inserted into a sliding groove formed in the supporting base. The surface of the bottom fastening connecting device is rotationally connected with the supporting base. The top of the inner side of the sliding protection device is fixedly connected with the lifting mechanism. One end of the projection screen angle control device is connected with the support frame main body device; the problems that the ground fixing effect is relatively poor, the projection screen lacks a protection device, and angle adjustment of the projection screen is troublesome are solved. The sliding protection device arranged in the device can play a good role in protecting the projection screen, and the sliding protection device can be used as a blackboard for auxiliary teaching; the bottom fastening and connecting device is arranged, so that a good anti-skid effect can be achieved, and meanwhile, rotation adjustment of the transverse angle of the projection screen is not affected; the projection screen angle control device is arranged, so that longitudinal angle control can be performed on the projection screen.

Description

technical field [0001] The invention relates to the technical field of teaching tools, in particular to a multimedia teaching delivery screen. Background technique [0002] Multimedia teaching means that in the teaching process, according to the teaching objectives and the characteristics of the teaching objects, the intelligent projection screen is rationally used, and it is organically combined with the traditional teaching methods to participate in the whole teaching process and use various media information to act on students to form a reasonable teaching environment. The structure of the teaching process can achieve the optimal teaching effect. [0003] However, as far as the current traditional multimedia projection screen is concerned, the traditional projection screen only has the function of supporting and sliding, the function is relatively single, and the fixing effect with the ground is relatively poor, and it is easy to be touched and slide. The device is easil...

AI Technical Summary

Problems solved by technology

[0003] However, as far as the current traditional multimedia projection screen is concerned, the traditional projection screen only has the function of supporting and sliding, and its function is relatively single. The device is easy to be damaged, and when using the projection screen for teaching, the teacher needs to rotate and adjust the angle of the projection screen to provide students with a better viewing effect. The traditional angle adjustment of the projection screen is more troublesome

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