Blackboard projection mechanism for teaching

A technology of blackboard writing and projection, which is applied in the field of teaching equipment, can solve the problem of reducing the effective writing area of ​​blackboards and projection screens, and achieve the effect of increasing the effective writing area

Inactive Publication Date: 2016-10-26
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a blackboard writing projection mechanism for teaching with large effective writing area and adjustable projection position, aiming at the problems existing in the above-mentioned prior art that the blackboard overlaps with the projection screen to reduce the effective writing area.

Method used

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  • Blackboard projection mechanism for teaching
  • Blackboard projection mechanism for teaching
  • Blackboard projection mechanism for teaching

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Embodiment Construction

[0021] The present invention will be further described below with reference to the drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0022] The present invention covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order for the public to have a thorough understanding of the present invention, specific details are described in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, for the sake of illustration, the drawings of the present invention are not drawn exactly according to the actual scale, and are described here.

[0023] Such as figure 1 , 2 As shown in and 3, a blackboard script projection mechanism for teaching of the present invention includes a blackboard projection board 1, a background mechanism, and a proj...

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Abstract

The invention discloses a blackboard writing projection mechanism for teaching. The blackboard writing projection mechanism comprises a blackboard writing projection plate (1), a background mechanism and a projector (2), wherein the background mechanism is arranged at the rear side of the blackboard writing projection plate (1) and close to the blackboard writing projection plate (1), the blackboard writing projection plate (1) is made of a transparent material, the background mechanism comprises a black movable background plate (3), a white movable background plate (4) and a black fixed background plate (5) which are orderly arranged at the rear side of the blackboard writing projection plate, the areas of the white movable background plate (4) and the black movable background plate (3) are the same, and the white movable background plate (4) and the black movable background plate (3) can move left and right under the driving of a power mechanism. Due to the adoption of the blackboard writing projection mechanism disclosed by the invention, the effective writing area can be increased, the position of the white movable background plate can be changed so that the people at different angles can clearly see the content of the projection, and the projection and the switching of the projection states can be realized.

Description

Technical field [0001] The invention relates to the field of teaching appliances, in particular to a blackboard writing projection mechanism for teaching. Background technique [0002] The blackboard used for writing on the blackboard of the teacher is indispensable in the classroom. For modern teaching, multimedia projection is naturally indispensable. Many classrooms have adopted teaching equipment that combines blackboards and projection screens, which not only meet the needs of teachers for writing on the blackboard, 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. However, due to the limited area of ​​the wall, the projection screen and the blackboard often overlap. Therefore, the prior art blackboard projection equipment has the following technical problems: [0003] 1. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/56G03B21/54G03B21/132G09B5/02
CPCG03B21/132G03B21/54G03B21/562G09B5/02
Inventor 赵明岩
Owner CHINA JILIANG UNIV
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