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Quick-drying water blackboard

A blackboard and water washing technology, applied in the field of teaching equipment, can solve problems such as long drying time of blackboards

Inactive Publication Date: 2018-07-17
四川省达川中学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of blackboard after scrubbing is that it takes more than ten minutes to dry after wiping. In winter, the drying time of the blackboard after scrubbing is longer due to the low temperature.

Method used

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  • Quick-drying water blackboard
  • Quick-drying water blackboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Such as Figure 1-2 As shown, this embodiment provides a quick-drying water-washable blackboard, which includes a blackboard body 1, a heating layer 2 is arranged on the back of the blackboard body 1, and the heating layer 2 can be kept within a certain temperature range after heating.

[0022] Wherein, the heating layer 2 includes a heating rod 6 that generates heat and a heat conducting layer that conducts heat, and the heat conducting layer is made of a heat conducting material such as silica gel. The heat conduction layer is covered on the back of the blackboard body 1 . The heating rods 6 are evenly distributed in the heat conducting layer.

[0023] The power circuit of the heating rod 6 is controlled by the temperature controller 5 so that the heat-conducting layer remains within a certain temperature range; the temperature controller 5 is used to detect the temperature of the heat-conducting layer or the heating rod 6 to switch on or off the power circuit of the...

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PUM

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Abstract

The invention relates to a quick-drying water blackboard. The quick-drying water blackboard comprises a blackboard body. The quick-drying water blackboard is characterized in that a heating layer is arranged on the back surface of the blackboard body, and the heating layer enable the blackboard body to keep within a certain temperature range after heating. According to the quick-drying water blackboard, the heating layer arranged on the back surface of the blackboard body enable the blackboard body to keep within a certain temperature range so as to quickly dry the blackboard body after beingscrubbed.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to a quick-drying washable blackboard. Background technique [0002] Blackboards are generally made of wood or frosted glass, and can be written on with specific writing materials such as chalk. Its surface is mostly black, dark green, white or beige. [0003] At present, most primary and secondary schools all use washing chalk, which is then scrubbed with a water-soaked rag after writing. The shortcoming of the blackboard after this scrubbing is to wait ten minutes to dry after wiping, and the drying time of the blackboard after scrubbing is longer due to low temperature during winter. After the students wiped the blackboard between classes, the teacher did not dry the blackboard most of the time in the next class, and the writing slipped and could not be written. Contents of the invention [0004] The object of the present invention is to provide a quick-drying wat...

Claims

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Application Information

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IPC IPC(8): B43L1/04F26B23/06H05B3/20H05B1/02
CPCB43L1/04F26B23/06H05B1/0227H05B3/20
Inventor 郑呈斌
Owner 四川省达川中学