Blackboard with automatic dust collection eraser

Abstract

The invention relates to a blackboard for teaching, in particular to a blackboard with an automatic dust collection eraser. The blackboard comprises a blackboard body and is characterized in that horizontal sliding tracks are arranged on the upper edge and the lower edge of the blackboard body, and an eraser device is arranged between an upper horizontal sliding track and a lower horizontal sliding track. The eraser device comprises an electric rolling brush, a floating supporting mechanism and a dust cover sleeved outside the electric rolling brush. A rolling brush shaft is connected on the upper horizontal sliding track and the lower horizontal sliding track in a sliding mode through the floating supporting mechanism. The upper end of the rolling brush shaft is provided with a gear motor, a control handle is arranged on the dust cover, and a control switch is arranged in the control handle. The lower end of the dust cover is further provided with a dust collection box, a dust collection fan blade is arranged at the lower end of the rolling brush shaft, and a dust collection cloth bag is arranged at the lower end of the dust collection box. The blackboard has the advantage that the electric rolling brush is used for erasing the blackboard, and labor and time are saved; dust is collected automatically, an environment is not polluted, and the blackboard is favorable for body health of teachers; and an erasing area can be selected flexibly and manually.

Description

technical field [0001] The invention relates to a teaching blackboard, in particular to a blackboard with an automatic dust-collecting eraser. 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 we write on the blackboard is not only time-consuming and laborious, but also serious dust pollution. Contents of the invention [0003] The invention aims at the deficiencies of the prior art, and provides a...

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 and laborious, but also serious dust pollution.

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