Novel dust-free blackboard

Abstract

The invention relates to a novel dust-free blackboard, in particular to the novel dust-free blackboard in the field of mechatronics, the blackboard in the current market can produce a large amount of dust in a using process, labor and time are wasted in cleaning of the blackboard, and the dust pollution is produced and causes serious harm to body health of teachers and students. During the using process of the novel dust-free blackboard, the erased dust is collected in a dust box, so that the air pollution caused by dust drifting is prevented, and the blackboard can be popularized in teaching use abundantly.

Description

1. Technical field [0001] The invention belongs to a novel blackboard, in particular to a dust-free blackboard in the field of mechanical electronics. 2. Background technology [0002] The blackboards that have been used in the market can be divided into three categories: one, ordinary green boards, this blackboard is the most common type, written with chalk, its advantage is strong operability, and its disadvantage is serious dust pollution; two, High-gloss panel, this kind of blackboard needs to be written with a water-soluble pen. Although it overcomes the problem of dust pollution, the water-soluble pen needs to be purchased. The price is many times higher than that of chalk, which increases the cost of use, and the writing experience is not as good as chalk. It is difficult to popularize it in a large number across the country, so this high-gloss panel is only used in special occasions, such as conference rooms, computer classrooms, etc. 3. Electrostatic dust-proof bla...

AI Technical Summary

Problems solved by technology

[0002] The blackboards that have been used in the market can be divided into three categories: one, ordinary green boards, this blackboard is the most common type, written with chalk, its advantage is strong operability, and its disadvantage is serious dust pollution; two, High-gloss panel, this kind of blackboard needs to be written with a water-soluble pen. Although it overcomes the problem of dust pollution, the water-soluble pen needs to be purchased. The price is many times higher than that of chalk, which increases the cost of use, and the writing experience is not as good as chalk.

It is difficult to popularize in large quantities across the country, so this high-gloss panel is only used in special occasions, such as conference rooms, computer classrooms, etc.

3. Electrostatic dust-proof blackboard. This kind of blackboard is equipped with an electrostatic dust-proof device on the green board. It has a better dust-proof effect in a short period of time, but its service life is relatively short, about half a year, and maintenance is troublesome.

In addition to the above three kinds of blackboards, there is also a liquid water-based chalk, which can be written on ordinary green boards. The chalk is in a liquid state. After writing, it will absorb or fall off in flakes on the board surface, and will not produce a lot of dust, but the cost of use Expensive, not suitable for general teaching use

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