Control method of blackboard projection device for teaching

The technology of a projection device and control method is applied in the directions of educational appliances, electric-operated teaching aids, instruments, etc., which 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: 2017-08-25
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention provides a control method for a blackboard writing projection device for teaching with a large effective writing area and adjustable projection positions, aiming at the problems in the prior art that the blackboard overlaps with the projection screen to reduce the effective writing area.

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  • Control method of blackboard projection device for teaching
  • Control method of blackboard projection device for teaching
  • Control method of blackboard projection device for teaching

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Embodiment Construction

[0023] 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.

[0024] 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.

[0025] Such as figure 1 , 2 As shown in and 3, a control method of a blackboard writing projection device for teaching of the present invention is based on a teaching blackboar...

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Abstract

The invention discloses a control method of a writing blackboard projection device for teaching. The writing blackboard projection device for teaching comprises a writing blackboard projection plate (1), a background mechanism and a projector (2), the background mechanism is located on the rear side of the writing blackboard projection plate (1), the writing blackboard projection plate (1) is made of transparent materials, the background mechanism comprises a belt (3) and two rollers (4) driving the belt (3) to rotate, the two rollers (4) are sleeved with the belt (3), the belt (3) is parallel to the writing blackboard projection plate (1) and is attached to the writing blackboard projection plate (1), and a black area (3.1) and a white area (3.2) are arranged outside the belt. The projector (2) carries out projection in the white area of the belt in the projection process. The effective writing area can be increased, the other side of the belt can be rotated to the side attached to the writing blackboard projection plate, the white area can change the projection position along with the motion of the belt, and people at different angles can see projected content clearly.

Description

technical field [0001] The invention relates to the field of teaching appliance control, in particular to a control method of a blackboard writing projection device for teaching. Background technique [0002] 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. However, due to the limited area of ​​the wall, the projection screen and the blackboard often overlap. Therefore, there are following technical problems in the blackboard projection equipment of the prior art: [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B5/02
CPCG09B5/02
Inventor 赵明岩
Owner CHINA JILIANG UNIV
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