Dust collecting blackboard

Abstract

The invention relates to a dust collecting blackboard. The dust collecting blackboard comprises a blackboard body, dust collectors arranged on the back surface of the blackboard body and a dust collecting groove arranged at the bottom of the blackboard body; the blackboard body is arranged on a wall surface in a protruding mode, and pinholes are uniformly formed in the front surface of the blackboard body; and the dust collectors are arranged in cassettes at the back surface of the blackboard body, leads of the dust collectors are led out from the cassettes to the two sides of the blackboard body, and switches are arranged at the positions of the leads. According to the blackboard, the pinholes are formed in the front surface of the blackboard body, and the dust collectors are arranged inthe cassettes of the blackboard body so that dust can be prevented from being generated when the blackboard is wiped, the dust suction amount of teachers and students can be reduced, and therefore, the blackboard is healthy and sanitary; and in addition, the front surface of the blackboard body is provided with the pinholes so that the blackboard can be prevented from reflecting light, the students can see the teaching contents on the blackboard at all angles in the classroom, and therefore, the teaching quality is improved.

Description

technical field [0001] The invention relates to the teaching field, in particular to a dust collecting blackboard. Background technique [0002] As we all know, the blackboard is an indispensable teaching aid in our daily study. Whether it is a primary school or a university, blackboards will be used. Although modern teaching uses a large number of multimedia facilities, and multimedia teaching has the characteristics of fast and large amount of information. However, it does not adapt to the learning habits of students. In terms of teaching effect, it is often inferior to traditional blackboard teaching. However, the disadvantage of blackboard teaching is that it is difficult to erase chalk characters. Usually, erasing the chalk characters written on the blackboard is not only time-consuming, laborious, but also serious dust pollution; and the blackboard surface currently used is flat and bright, and students can view it from different angles. There is reflection, which mak...

AI Technical Summary

Problems solved by technology

However, the disadvantage of blackboard teaching is that it is difficult to erase chalk characters. Usually, erasing the chalk characters written on the blackboard is not only time-consuming, laborious, but also serious dust pollution; and the blackboard surface currently used is flat and bright, and students can view it from different angles. Reflective light makes it difficult to see clearly, which affects students' listening emotions

Based on this, in recent years, although there have been blackboards composed of a blackboard surface and a dust collection tank fixed below the blackboard surface, it is inconvenient and not thorough when collecting dust.

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