Rear projection type projecting and teaching integrated device

Abstract

The invention discloses a rear projection type projecting and teaching integrated device and mainly relates to the field of audio-visual educational equipment. The integrated device comprises a rack, a projector and a teaching board, wherein a camera slot is formed in the lower part of the rack; the projector is arranged in the camera slot and performs projection towards the upper backward direction; a reflector capable of being folded is arranged on the back side of the rack; the teaching board is arranged on the middle upper part of the rack; a transparent acrylic writing board is arranged in front of the teaching board; rear projection cloth is arranged on the inner side of the writing board; optical fibers capable of lifting are arranged on the writing board; light sources capable of enabling the optical fibers to light are arranged at the two ends of the optical fibers; and an automatic cleaning device in horizontal sliding connection with the teaching board is arranged on the front side of the teaching board. The rear projection type projecting and teaching integrated device disclosed by the invention has the beneficial effects that the device has the functions of blackboard-writing, cue mark and the like, can meet the narrow-range high-level teaching requirements and has the advantages of being capable of folding and containing, easy to clean and long in service life, the maintenance cost is reduced, and general popularization is facilitated.

Description

technical field [0001] The invention relates to the field of audio-visual education equipment, in particular to a rear-projection projection teaching integrated device. Background technique [0002] With the continuous improvement of the level of science and technology, the diversification of teaching content and the increasing amount of information in colleges and universities, the use of multimedia technology to assist teaching has become one of the main teaching methods in colleges and universities. In a sense, the rationality of the equipped audio-visual equipment has a great influence on the teaching quality and teaching level. [0003] Most of the electronic classrooms in colleges and universities use soft curtains that can be rolled up, and a projector is hoisted for front-projection projection of teaching content. This fixed installation method and front-projection projection structure have many limitations in flexibility, convenience, and functionality. When encou...

AI Technical Summary

Problems solved by technology

However, the marking devices in the prior art all block the curtain to a certain extent, and cannot provide prompts without affecting the effect of courseware display at all, so the practicability is not strong

And it generally needs to be adjusted manually by the teacher, which is very inconvenient to use

[0008] Finally, due to the existing audio-visual equipment, the curtain generally adopts soft curtain, which is easily damaged by external force and difficult to maintain

At the same time, the blackboard part and the curtain part are set independently, which requires cleaning and maintenance of the blackboard and the curtain separately. adverse effect on the indoor environment

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