Blackboard with chalk powder cleaning groove

Abstract

The invention belongs to a teaching aid, in particular provides a blackboard with a chalk powder cleaning groove. When the existing blackboard is cleaned, chalk powder scatters everywhere on the floor, so that the cleanness of a classroom is influenced. When the floor is swept, the chalk powder flies everywhere, so that the health of teachers and students is influenced. The two sides at the lower part of the blackboard (1) provided by the invention are respectively provided with brackets; the chalk powder cleaning groove is connected with the brackets through screws (2); the lower part of the chalk powder cleaning groove is provided with a chalk powder collecting box (6); the cleaning groove is divided into three sections (3), (4) and (5); and the cleaning groove can be rotated to be tilted downwards, thus the chalk powder automatically flows into the chalk powder collecting box. The blackboard provided by the invention has the advantage of simple structure, is convenient to use, is easy to produce and install and is not easy to damage.

Description

technical field [0001] The invention belongs to teaching tools, in particular to a blackboard with chalk dust cleaning grooves. Background technique [0002] The blackboard is a necessary teaching tool for every classroom in the school. The teacher writes on the blackboard with chalk. When wiping the blackboard, the ground below the blackboard is full of chalk dust, which affects the hygiene of the classroom. When sweeping the floor, chalk dust flies, which affects the health of teachers and classmates. Therefore invent a kind of protection classroom floor cleaning, the blackboard that has the chalk dust cleaning groove that protects teacher and classmate's health is necessary. Contents of the invention [0003] The purpose of the invention is to invent a blackboard with a chalk dust cleaning groove to protect the cleanness of the classroom floor and the health of teachers and classmates. [0004] The purpose of the present invention is achieved like this: [0005] Ther...

AI Technical Summary

Problems solved by technology

[0002] The blackboard is an essential teaching tool for every classroom in the school. The teacher writes on the blackboard with chalk. When the blackboard is wiped, the lower part of the blackboard is covered with chalk dust, which affects the hygiene of the classroom.

When sweeping the floor, chalk dust flies, which affects the health of teachers and students

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