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Environment-friendly blackboard

An environmentally friendly blackboard and perforated plate technology, which is applied in the field of teaching tools, can solve the problems of wasting resources, heavy pen power, and difficult to clean, and achieves the effects of low cost of use, long service life and easy cleaning.

Inactive Publication Date: 2015-09-02
SUZHOU RUIQI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used blackboards in teaching are made of composite boards or metal plates. vision; but chalk will produce a lot of dust in the process of writing and wiping. Long-term inhalation of dust will damage the respiratory system of teachers and students, and there is a big health hazard; blackboards used for a long time will become white, resulting in the contrast of chalk characters It is not conducive to students to watch; some teachers have heavy pens, which are difficult to wipe off after writing; in addition, when using this blackboard, a large amount of chalk needs to be consumed, which wastes more resources and pollutes the environment

Method used

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Embodiment

[0013] exist figure 1 , figure 2 In the shown embodiment, this environment-friendly blackboard includes writing board 1, grid hole plate 2 and backboard 3, and the surface of described backboard 3 is black, and described writing board 1 is made of transparent material, and described net The grid hole plate 2 is made of ferromagnetic material; the grid hole plate 2 is fixedly clamped between the writing board 1 and the back plate 3, and the mesh on the grid hole plate 2 runs through the grid hole plate 2. The surface of the inner wall of each mesh is rough, and the size of the mesh is small and densely distributed on the mesh orifice plate. When viewed from a distance, each of the mesh forms a complete plane; a ball is installed in each of the mesh 4. The ball 4 is composed of two hemispheres. One of the two hemispheres is a permanent magnetic hemisphere 41 with a black surface, and the other is a plastic hemisphere 42 with a white surface; the north and south poles of the pe...

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Abstract

The invention relates to an environment-friendly blackboard. The environment-friendly blackboard comprises a writing board, a meshed board and a back board, wherein the writing board is made of a transparent material and the meshed board is made of a ferromagnetic material; the meshed board is fixedly clamped between the writing board and the back board, and meshes in the meshed board penetrate through the meshed board; a ball is mounted in each mesh of the meshed board and formed by splicing two half-balls, one of the two half-balls is a permanent magnetic half-ball with the black surface, and the other is a plastic half-ball with the white surface; the connecting line of south and north poles of each permanent magnetic half-ball is overlapped with the self-axis. During usage, the blackboard is free of dust, more environment-friendly, cleaner, safer, easy to wipe and clean and capable of saving a large number of resources.

Description

technical field [0001] The invention relates to a teaching tool, in particular to an environment-friendly blackboard. Background technique [0002] At present, the commonly used blackboards in teaching are made of composite boards or metal plates. vision; but chalk will produce a lot of dust in the process of writing and wiping. Long-term inhalation of dust will damage the respiratory system of teachers and students, and there is a big health hazard; blackboards used for a long time will become white, resulting in the contrast of chalk characters It is not conducive to students to watch; some teachers have heavy pens, which are difficult to wipe off after writing; in addition, when using this blackboard, a large amount of chalk needs to be consumed, which wastes more resources and also pollutes the environment. Contents of the invention [0003] In view of the above problems, the present invention provides an environment-friendly blackboard, which has no dust during use, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/04B43L1/10
CPCB43L1/008B43L1/045B43L1/10
Inventor 徐静
Owner SUZHOU RUIQI ELECTRONICS
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