Power-driven glass based blackboard writing projection method for teaching

An electronically controlled glass and glass plate technology, applied in the field of teaching appliances, can solve the problems of large effective writing area, reduction of effective writing area by blackboard and projection screen, etc., and achieve the effect of increasing effective writing area

Inactive Publication Date: 2016-05-04
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the present invention aims at the problems in the prior art that the blackboard and the projection screen overlap to reduce the effective writing area, etc., and provides a blackboard writing projection method for teaching with large effective writing area and adjustable projection position based on electronically controlled glass

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  • Power-driven glass based blackboard writing projection method for teaching
  • Power-driven glass based blackboard writing projection method for teaching
  • Power-driven glass based blackboard writing projection method for teaching

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0020] The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but 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 completely drawn according to the actual scale, and are described here.

[0021] Such as figure 1 , 2 Shown in and 3, a kind of blackboard projection method for teaching based on electronically controlled glass of the present invention adopts a black...

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Abstract

The invention discloses a power-driven glass based blackboard writing projection method for teaching. A blackboard writing projection system for teaching comprises a blackboard writing projection plate (1), a background mechanism and a projector (2), wherein the background mechanism is arranged on a rear side of the blackboard writing projection plate (1) and is in close contact with the blackboard writing projection plate (1), the blackboard writing projection plate (1) is made of a transparent material, the background mechanism comprises a fixed black background plate (3) and a projection screen plate (4), the projection screen plate (4) is arranged between the fixed black background plate (3) and the blackboard writing projection plate (1) and is power-driven liquid crystal photochromic glass, the power-driven liquid crystal photochromic glass shoes a transparent state when energized and shows a white color when power is off, and the projector (2) carries out projection on the power-driven liquid crystal photochromic glass which is in a power-off state. By the blackboard writing projection system, the effective writing area can be expanded, the position or the power-off region of the power-driven liquid crystal photochromic glass can be changed to change the projection position, and thus, people at different angles can all clearly view the projected content.

Description

[0001] This application is a divisional application with application number 201410727112.7, application date December 3, 2014, and invention name "Electrically Controlled Glass-Based Teaching Blackboard Projection System". technical field [0002] The invention relates to the field of teaching tools, in particular to a blackboard writing projection method for teaching based on electric control glass. Background technique [0003] 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 class...

Claims

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Application Information

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