Electronic teaching board system

Abstract

The invention provides an electronic teaching board system which comprises a teaching board, a writing device and an erasing device, wherein the teaching board comprises a semi-transparent front panel, a back panel, and a middle porous plate; the middle porous plate consists of densely distributed cavity units, the interior of each cavity unit comprises a front cavity and a back cavity, each front cavity is in contact with the front panel, each back cavity is in contact with the back panel, and the two cavities are communicated through a narrow thin neck; iron powder is stored in each cavity unit; the surface, near to the porous plate, of the front panel is a conductive surface, conductive tip cones are distributed on the back panel fully, and each conductive tip cone extends into one back cavity; the back panel is electrically connected with one electrode of a storage battery, and the other electrode of the storage battery is led out with an interface; the writing device comprises a magnetic end part; the erasing device comprises an erasing end part, a surface-shaped conductive sheet is arranged inside the erasing end part and the conductive sheet is electrically connected with a connecting wire matched with the interface. The system is conveniently used, the dust pollution is not generated in the use process, and the system is suitable for the teaching in common classrooms.

Description

[0001] This application is a divisional application for a patent application with application number: 201410055394.0, name: electronic teaching board system, and application date: 2014-02-19. technical field [0002] The invention relates to the field of teaching equipment, in particular to an electronic teaching board system, which includes a teaching board, a doodling device and a wiping device. Background technique [0003] Teaching boards, such as blackboards, are basic equipment in educational facilities. The traditional blackboard uses chalk to write, which is still the mainstream, mainly because of the low cost; however, when writing on the traditional chalk blackboard, a large amount of dust will be generated, which seriously affects the health of teaching staff. [0004] In view of this, at present, electronic teaching boards have gradually begun to be popularized and applied. For current electronic teaching boards, such as whiteboards, they need a powerful comp...

AI Technical Summary

Problems solved by technology

[0006] However, for this kind of magnetic drawing board, there is a problem that the magnetic rod can only be removed in pieces when eliminating the handwriting, that is, it can only remove the handwriting in the area swept by the linear magnetic rod, and it cannot be used for individual characters. erasure, therefore, cannot be adapted for general teaching applications

[0007] What's more regrettable is that because the magnetic rod can only be arranged on the back of the drawing board, and for the large teaching board in the classroom, it is fixed on the wall, so the magnetic rod cannot be installed on the back of the drawing board, even if the wall is dug It is empty, and the magnetic rod is installed forcibly. For the teaching staff, it is impossible to go behind the teaching board to operate the magnetic rod in real time.

[0008] Therefore, for this kind of widely popularized magnetic drawing board, it is only suitable for infants and young children to graffiti, and it cannot be applied to actual teaching all the time.

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