Anti-reflective blackboard with rotatable angle adjustment

Abstract

The invention discloses an anti-reflection blackboard capable of adjusting angles in a rotating mode. The anti-reflection blackboard comprises an inner frame, an outer frame and a blackboard body. The blackboard body is arranged in the inner frame. The inner frame is matched with the outer frame in the mode of rotating around a vertical center line. The anti-reflection blackboard further comprises an indexing locating mechanism. On the basis of guaranteeing the advantages of various existing blackboards, the blackboard body can be made to incline to a certain extent by pushing the inner frame or the blackboard body to rotate around the self axis in practical teaching by means of simple refitting; on the basis of not affecting the position visual angle of a main classroom, reflection of the blackboard body under the conditions of sunlight or strong lamplight and the like can be reasonably avoided, and the demands of students on the two sides of the classroom for visual angles are met; meanwhile, the indexing locating mechanism is further arranged, and therefore the blackboard body can be quickly located after inclining.

Description

technical field [0001] The invention relates to a teaching tool, in particular to a rotatable angle-adjustable anti-reflection blackboard. Background technique [0002] In actual teaching, because the existing blackboard used is fixed on the wall, only the viewers facing the blackboard can have a good viewing angle, but the viewers on both sides of the classroom may not be able to obtain a good learning experience due to skewed viewing angles or reflections. environment, leading to insufficient understanding of knowledge, and reduced enthusiasm for teacher-student interaction. [0003] In order to solve the above problems, some people have designed some anti-reflective blackboards. By adding reflective panels, or setting two left and right boards, the two boards can respectively rotate around their own sides to reduce reflections. Although there is a certain effect, the effect is It is not obvious, and it is quite inconvenient to use. Some people have designed a blackboard ...

AI Technical Summary

Problems solved by technology

[0002] In actual teaching, because the existing blackboard used is fixed on the wall, only the viewers facing the blackboard can have a good viewing angle, but the viewers on both sides of the classroom may not be able to obtain a good learning experience due to skewed viewing angles or reflections. environment, leading to insufficient understanding of knowledge, and reduced enthusiasm for teacher-student interaction

[0003] In order to solve the above problems, some people have designed some anti-reflective blackboards. By adding reflective plates, or setting two left and right boards, the two boards can respectively rotate around their own sides to reduce reflections. Although there is a certain effect, the effect It is not obvious, and it is quite inconvenient to use. Some people have designed a blackboard with adjustable tilt angle to prevent reflection. Most of the blackboards used in the interior are push-pull blackboards up and down, which are realized by chain transmission. If the above-mentioned existing methods are used, the modification cost is high, which is not conducive to popularization

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