Dust removing blackboard

Abstract

The invention discloses a dust removal blackboard and comprises a support frame and a rolled writing surface arranged on the support frame. A support device used for supporting the rolled writing surface is arranged on the support frame; a rotating device of the rolled writing surface is fixed on the support frame and arranged at the inner side of the rolled writing surface; a wiping dust removal device is fixed on the support frame and arranged at two sides of the outer part of the rolled writing surface. Therefore, when in use, especially in the primary and middle schools, the invention has the advantages of reducing the labor intensity of teachers or students, no pollution to environment and decreasing the incidence of pneumoconiosis, thus improving the environment of the class and the quality of teaching.

Description

technical field [0001] The invention relates to a writing product, in particular to a blackboard for writing. Background technique [0002] In the teaching process, the blackboard is an important platform for teachers to teach students knowledge, especially in primary and secondary schools with poor acceptance. At present, the existing blackboards for teaching are all old-fashioned ones fixed on the wall. After writing on the blackboard, it is necessary to manually wipe the chalk writing on the blackboard. First, the labor intensity is high; second, the flying dust will pollute the environment and easily cause pneumoconiosis; After wiping the chalk writing on the higher position on the blackboard, you have to rely on foreign objects such as stools, which increases the danger and makes the blackboard bring more troubles to teachers and students during use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a dust-re...

AI Technical Summary

Problems solved by technology

[0002] In the teaching process, the blackboard is an important platform for teachers to teach students knowledge, especially in primary and secondary schools with poor acceptance. At present, the existing blackboards for teaching are all old-fashioned ones fixed on the wall. After writing on the blackboard, it is necessary to manually wipe the chalk writing on the blackboard. First, the labor intensity is high; second, the flying dust will pollute the environment and easily cause pneumoconiosis; After wiping the chalk writing at a higher position on the blackboard, you have to use stools and other foreign objects, which increases the danger and causes more troubles for teachers and students during the use of the blackboard

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