Multifunctional blackboard

Abstract

The invention relates to a multifunctional blackboard, which comprises an inner chip, rotating shafts, blackboard cloth and brush patch members. The outer surface of an inner core board is wrapped by a thin iron sheet; tension springs are respectively arranged at two ends of the inner core board and are used for supporting two ends of the rotating shafts; the rotating shafts are fixed by two ends of a support frame arranged on the inner core board; the lower ends of the rotating shafts are connected with a one-way alternating current speed reducing motor; the blackboard cloth is wound on the rotating shafts; and the brush patch members are arranged on the back side of the blackboard cloth and are also arranged in a powder storage box. The invention has the beneficial effects that the condition that chalk dust flies towards teachers and students in a classroom can be thoroughly changed; a good studying and teaching environment is created; the multifunctional blackboard has a function of promoting the health of the teachers; and meanwhile, the chalk dust can be recycled so as to meet the requirement of recycling economy in China.

Description

technical field [0001] The invention relates to a multifunctional blackboard. Background technique [0002] The blackboard is a teaching tool that people are all too familiar with. Teachers often use the blackboard to write teaching content when teaching. When teachers and students clean the written board surface, chalk dust is often flying and sticking to the hands, heads and clothes of teachers and students. , Students sitting in the front row often hold their breath to prevent "eating dust", and the ground next to the blackboard is even more white dust. In addition, teachers use a lot of voice, and pharyngitis and pneumonia are common occupational diseases. Due to the large amount of dust, teachers are also very likely to suffer from occupational diseases, especially for teachers in middle and primary schools in backward areas. And dust ash floats everywhere, can't utilize. Contents of the invention [0003] The purpose of the present invention is to provide a multifu...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multifunctional blackboard, which can avoid chalk dust floating in the air and cause environmental pollution in the classroom, chalk dust can be recycled, overcome the shortcomings of existing products that dust and dust cannot be used, and teachers are prone to occupational diseases.

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