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Teaching blackboard

A technology of blackboards and boards, applied in the field of teaching blackboards, can solve problems such as adverse health effects, achieve the effects of improving the working environment, easy operation, and eliminating hidden dangers

Active Publication Date: 2012-12-19
雷朝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chalk is an important thing in teaching, but its use has adverse effects on people's health

Method used

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  • Teaching blackboard
  • Teaching blackboard

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Embodiment Construction

[0025] see figure 1 , a teaching blackboard, comprising a board body 14, a dust removal device, a dust suction device, an erasing device and an electric control center device, the dust removal device includes a dust removal screen 7 and an electric shaft 8 synthesized by industrial plastics, the dust removal screen 7 scrolling and winding on the electric shaft 8, the upper and lower ends of the gray screen 7 are provided with a pulley 6, the electric shaft 8 is connected with the pulley 6, and the electric shaft 8 is connected with the electric shaft power box 11; The upper and lower sides of the plate body 14 are provided with shielding screen tracks 9, the pulleys 6 at the upper and lower ends of the dust screen 7 are embedded with the shielding screen tracks 9, and the electric shaft 8 is provided with a brush plate 10; the dust suction device includes an electrostatic suction Dust board 2; the electrostatic dust collection board 2 is located at the inside of the upper and ...

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Abstract

The invention discloses a teaching blackboard which comprises a blackboard body, an ash shielding screen and an electric shaft, wherein the ash shielding screen is wound on the electric shaft; the upper end and the lower end of the ash shielding screen are both provided with pulleys; the electric shaft is connected with the pulleys; shielding screen rails are embedded into the pulleys at the upper end and the lower end of the ash shielding screen; the electric shaft is provided with a brush plate; an ash adsorption device comprises a static electricity dust adsorption board; a long blackboard brush is arranged on a flexible electric brake rail; the flexible electric brake rail is connected with a flexible electric brake rail power box; an ultrasonic wave generator is arranged in the long blackboard brush and is connected with the flexible electric brake rail power box; two edges of the upper side and the lower side of the long blackboard brush are inwards embedded in a blackboard brush rail; and an electric control pivot device comprises an electric control area of the ash shielding screen, an electric control area for ash adsorption, an electric control area for wiping and a timing electric control area. According to the teaching blackboard, a blackboard can be thoroughly cleaned without generating dust. In the whole process, no air pollutants are generated, the whole process does not need to be finished by manpower but can be automatically electrically finished.

Description

technical field [0001] The invention relates to a teaching blackboard. Background technique [0002] As students, we clean up and wipe the blackboard every day. These are very simple things, but in fact, many students are unwilling to wipe the blackboard during the daily duty. Blackboard, why is this? [0003] Reason 1: Because when you wipe the blackboard, there will be a lot of chalk dust. After the chalk dust is inhaled, it will make people cough continuously, and it will also cover your clothes and hair with a layer of white chalk dust that is difficult to wipe off. If it is heavy gray, it is not only your clothes and hair, but also your face and neck are covered with that hateful white ash. [0004] Reason 2: In order to increase the ability of astigmatism, the surface of the general blackboard is made rough, and the words written on it are difficult to erase, so it takes a lot of effort to wipe the blackboard, so people will be confused after wiping the blackboard. ...

Claims

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Application Information

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IPC IPC(8): B43L1/04B43L19/00
Inventor 雷朝雷建设
Owner 雷朝
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