Environment-friendly erasing-free blackboard

Abstract

The invention discloses an environment-friendly erasing-free blackboard which comprises a blackboard frame, a writing pen, a master rotating roller and a slave rotating roller which are mounted on theblackboard frame, writing cloth connected to the master rotating roller and the slave rotating roller in a sleeving manner, a driving motor which is connected with the master rotating roller and drives the master rotating roller and the slave rotating roller to realize rotation of the writing cloth, and a heating assembly mounted between the master rotating roller and the slave rotating roller, wherein the writing pen is used for writing on the writing cloth, and blackboard-writings are cleared away through the heating assembly. The writing pen of the environment-friendly cleaning-free blackboard writes on the blackboard by rotating the writing cloth, so that a teacher only needs to remotely control the writing cloth to move by tiptoeing or squatting down to write on the blackboard; a writing space is larger, and the blackboard-writings are more comprehensive and flexible, so that students can acquire board-writing information fully, and the teaching quality is improved; the writing pen and a writing board are matched; water writing is adopted, so that injury caused by lime powder is avoided; a heating plate can quickly realize restoration of the writing cloth, so that the time for erasing the blackboard is shortened; therefore, the class time is saved, and the teaching speed is increased.

Description

technical field [0001] The invention relates to a blackboard, in particular to an environment-friendly free-erase blackboard. Background technique [0002] The existing blackboard is a rectangular cement wall, and the black ink has become a blackboard, and lime powder is used to make chalk to write on the blackboard for school teaching. The existing problems are: 1. The blackboard is fixed and cannot be moved. Lime powder will be produced when writing. Especially when the blackboard is wiped, the powder will fly everywhere, which will cause harm to teachers and students, especially teachers. It is reported that teachers suffer from lung disease and lung cancer. people, is 5 to 6 times the average person. 2. The height of the blackboard is too high. When the teacher needs to check the whole article or several sets of calculation methods, he needs to write on the blackboard in several paragraphs. It is impossible to give the overall content. The effect of writing on the black...

AI Technical Summary

Problems solved by technology

The existing problems are: 1. The blackboard is fixed and cannot be moved. Lime powder will be produced when writing. Especially when the blackboard is wiped, the powder will fly everywhere, which will cause harm to teachers and students, especially teachers. It is reported that teachers suffer from lung disease and lung cancer. people, 5 to 6 times that of ordinary people

2. The height of the blackboard is too high. When the teacher needs to check the whole article or several sets of calculation methods, he needs to write on the blackboard in several paragraphs. It is impossible to give the overall content. The effect of writing on the blackboard is poor, resulting in poor teaching quality

Although there are many ways to improve around these problems, the effect of improvement is not ideal, and innovation is still needed

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