Magnetic dust-free blackboard

A blackboard and magnetic technology, applied in the field of teaching equipment, can solve the problems of teachers' physical hazards, consumption of teachers' physical strength, and occupation of classroom time, and achieve the effects of avoiding dust, ensuring clear display, and ensuring physical health

Pending Publication Date: 2018-02-16
陈玉娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the teacher wipes the blackboard, it not only takes up a lot of classroom time, but also brings more labor to the teacher and consumes the physical strength of the teacher.
In addition, when the teacher wipes the blackboard, a large amount of chalk dust will be produced, and the teacher can easily inhale a large amount of chalk dust, which will cause great harm to the teacher's body. Students cannot read clearly what is written on the blackboard

Method used

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Examples

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Embodiment Construction

[0020] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Such as Figure 1-Figure 6 As shown, the embodiment of the present invention provides a magnetic dust-free blackboard, including a blackboard body, a stylus pen, and an eraser. The blackboard body includes a white blackboard surface 1, an intermediate layer 2 and a sealing plate 3. , the middle layer 2 and the sealing plate 3 are sequentially connected from top to bottom through the blackboard frame and packaged as a whole. The blackboard surface 1 is composed of many densely packed concave-convex arc surfaces. Using the principle of light convergence, when there are fonts on the board surface The trainee will not be troubled by the refl...

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PUM

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Abstract

The invention discloses a magnetic dust-free blackboard. A blackboard body comprises a white blackboard panel, a middle layer and a sealing plate. The blackboard panel is formed by many thickly dottedconcave and convex cambered surfaces, and magnetic powder is stored in the middle layer which is formed by butt joint of two PE films of polygonal honeycomb structures and is tangential to the concave and convex cambered surfaces of the blackboard panel; a board eraser comprises two ball lead screws and magnetic strips, the two ball lead screws are separately aligned to the upper and lower edgesof the frame of the blackboard, the magnetic strips are parallel to the blackboard panel and are mounted vertical to the ground, the upper and lower ends of the magnetic strips are separately connected to nut pairs of the two ball lead screws, and the two ball lead screws are connected through a gear rack; a contact probe pen comprises a pen shell and a magnet mounted in the pen shell, and two ends of the magnet are separately poles N and S. According to the magnetic dust-free blackboard disclosed by the invention, the reflective problem of the blackboard can be solved well, and the writing isclearly displayed. Contents are written by matching the contact probe pen with the magnetic powder, so that generation of dust is prevented, the physical health of a user is guaranteed, and the magnetic dust-free blackboard which has an erasing function is convenient to use.

Description

technical field [0001] The invention relates to the field of teaching appliances, in particular to a magnetic dust-free blackboard. Background technique [0002] Blackboards are an everyday item and a must-have in school classrooms. It is very convenient to make and use, but in the classroom, the teacher should often wipe the classroom content recorded on the blackboard to leave space for recording other classroom content. When the teacher wipes the blackboard, it not only takes up a lot of classroom time, but also brings more labor to the teacher and consumes the physical strength of the teacher. In addition, when the teacher wipes the blackboard, a large amount of chalk dust will be produced, and the teacher can easily inhale a large amount of chalk dust, which will cause great harm to the teacher's body. Students cannot read clearly what is written on the blackboard. Contents of the invention [0003] In order to solve the above problems, the present invention provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/00B43L1/04
CPCB43L1/008B43L1/04
Inventor 陈玉娟靳咏桥赵献兵布紫叶彭梦菲陈浩哲
Owner 陈玉娟
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