CN201833741U - Concave blackboard - Google Patents

Abstract

The utility model discloses a concave blackboard, wherein the middle part of the blackboard is a plane and both ends of the blackboard are arc-shaped in symmetrical manner. When the concave blackboard is used, the concave blackboard solves the problem that students on one side of the blackboard only see blank blackboard instead of the blackboard writing on the other side of the blackboard due to light reflection; meanwhile, when the teacher gives the lesson sideways or gives the lesson while writing on blackboard, the voice of the teacher giving the lesson can be reflected to the students to the most extent, therefore the students can hear the teacher more clearly, and the learning efficiency of the students is improved.

Description

The spill blackboard

Technical field the utility model relates to the education and instruction equipment, directly relates to a kind of spill blackboard.

Background technology is along with the development of society and the quickening of flow of personnel, and personnel concentrate to cities and towns apace, and students in middle and primary schools are also concentrating to cities and towns thereupon, thereby causes the crowded of the student of cities and towns middle and primary schools, even the phenomenon that a classroom holds more than 80 student occurs.And the blackboard that current school uses all is planes, because the reflex of light, during the student of former row's one sides looks at the blackboard in the classroom opposite side is blank out, and does not see teacher's writing on the blackboard content, has brought certain influence for teacher's teaching and student's study.

The summary of the invention the purpose of this utility model will provide a kind of spill blackboard exactly, only sees that blank out does not see the problem of teacher's writing on the blackboard content when it can solve the opposite side that the student of blackboard one side that the reflex owing to light causes looks at the blackboard effectively.

The purpose of this utility model is achieved in that the spill blackboard, and the middle part of blackboard is the plane, and two is symmetrical arc.

The utility model is because the design of symmetrical arc has been adopted at two, thereby changed the reflection angle of two, blackboard left and right sides light, during the student of former row's one sides looks at the blackboard in the classroom opposite side no longer is blank out, but can clearly see teacher's writing on the blackboard content clearly; Simultaneously, the sideway that is a teacher is taught or is said class hour towards blackboard side plate book limit, and the utility model can farthest be folded to the student to the sound that teacher teaches, and the teaching sound that the student can be heard is more clearly, thereby improves student's learning efficiency.

Appended drawings is a structural representation of the present utility model, below in conjunction with accompanying drawing utility model is described further.

Specific embodiment accompanying drawing has shown the schematic diagram of the utility model spill blackboard, and the middle part 1 of blackboard is the plane, and position, two 2 is symmetrical arc.

Claims (1)

1. a spill blackboard is characterized in that, the middle part of blackboard (1) is the plane, and position, two (2) are symmetrical arc.

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