Projection teaching device used for learning of senior high school student

A teaching device and technology for high school students, applied in projection devices, optics, instruments, etc., can solve the problems of difficult use, complicated operation, complicated structure, etc., and achieve the effects of low adjustment cost, convenient operation, and improved use efficiency

Inactive Publication Date: 2016-12-14
刘子琛
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of projection device has complex structure, complex operation,

Method used

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  • Projection teaching device used for learning of senior high school student
  • Projection teaching device used for learning of senior high school student
  • Projection teaching device used for learning of senior high school student

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[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] See Figure 1-3 As shown, the present invention is a projection teaching device for high school students, including a blackboard 1, a projector 2 and a projection screen 3. The lower end of the projector 2 is provided with a sliding plate 4 that facilitates its sliding, and both ends of the sliding plate 4 pass through booms 5 It is fixedly connected with the top wall of the classroom. The upper end of the blackboard 1 is provided...

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Abstract

The invention discloses a projection teaching device used for learning of a senior high school student. The projection teaching device comprises a blackboard, a projector and a projection screen; a sliding plate is arranged at the lower end of the projector; the two ends of the sliding plate are fixedly connected with the top wall of a classroom through suspending rods; a guide rail is arranged at the upper end of the blackboard; a sliding groove is formed in the guide rail; rolling mechanisms are symmetrically arranged at the two ends of the guide rail; and the rolling mechanisms are connected with a sliding base of the projection screen through rolling ropes. As the sliding plate and the guide rail are arranged, the projector and the projection screen can move transversely, accordingly the projection screen can make space for the unwritten blackboard region behind, and the utilization rate of the blackboard is increased during the projection; as the position of the projector is adjusted in a manual pulling manner and the position of the projection screen is adjusted through the rolling mechanisms at the two ends, the adjustment cost is relatively low, the operation is relatively convenient and good practicability is obtained.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a projection teaching device for high school students. Background technique [0002] When high school students are studying in class, the blackboard used for teaching blackboard writing is indispensable in the classroom. For modern teaching, multimedia projection is naturally indispensable. Many classrooms use teaching equipment combining blackboards and projection screens, which not only meet the needs of teachers for blackboard writing, but also use projection equipment for projection teaching. In the prior art, the projection equipment includes a projector and a projection screen. The projection screen and the blackboard are generally installed on the wall in front of the classroom. The installation position of the projection screen is fixed. Due to the limited area of ​​the wall, the projection screen and the blackboard There are often overlapping parts, which occupy the te...

Claims

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Application Information

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IPC IPC(8): G03B21/54
CPCG03B21/54
Inventor 刘子琛
Owner 刘子琛
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