CN201931847U - Environmentally-friendly blackboard - Google Patents
Environmentally-friendly blackboard Download PDFInfo
- Publication number
- CN201931847U CN201931847U CN2011200090673U CN201120009067U CN201931847U CN 201931847 U CN201931847 U CN 201931847U CN 2011200090673 U CN2011200090673 U CN 2011200090673U CN 201120009067 U CN201120009067 U CN 201120009067U CN 201931847 U CN201931847 U CN 201931847U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- environmentally
- curtain cloth
- friendly
- curtain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004576 sand Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 abstract 4
- 238000005096 rolling process Methods 0.000 abstract 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000009323 psychological health Effects 0.000 abstract 1
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000030303 breathing problems Diseases 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides an environmentally-friendly blackboard which belongs to a teaching aid and mainly solves the problem that the traditional blackboard can easily cause light refection and the flying of chalk dust due to the fixed position. The environmentally-friendly blackboard comprises a blackboard main body and is characterized in that: the blackboard main body consists of a hanging shaft, a curtain cloth and a rolling shaft; black fine sand is uniformly distributed on the surface of the curtain cloth, and the hanging shaft and the rolling shaft are respectively arranged at the upper end and the lower end of the curtain cloth. The environmentally-friendly blackboard is convenient to pick up and can be cleaned and wiped in a centralized way after being used and taken out of a classroom with the curtain cloth being rolled up, thereby solving the problem that the wiping of the traditional blackboard can cause the flying of chalk dust to do harm to the physical and psychological health of teachers and students; moreover, environmental pollution and light reflection are also avoided. Therefore, the environmentally-friendly blackboard is simple to operate and has low cost.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically is a kind of environment friendly blackboard.
Background technology
Class hour on to the student, for ease of understanding and memory, teacher can write on blackboard with chalk and wipe with blackboard eraser every now and then, following class hour, the student on duty classmate also will erase the board, chalk powder will drop on one after another teacher and classmates on hand and on one's body, the dust that flies upward also can be inhaled in the lung, because the specific physical performance of chalk, this can cause very big injury to health, the pneumoconiosis and the various acute and chronic breathing problem that cause as dust, dust is to eyes, ear, the injury of skin, can also bring out other disease,, teacher and classmates' physical and mental health all be had great harm to the influence of air quality and to influence of myopia or the like; In addition, traditional blackboard mostly and body of wall be connected as a single entity, can't move, also can cause the low and vision disorder of student's learning efficiency etc. because of reason such as reflective.
The utility model content
The purpose of this utility model is to provide a kind of environment friendly blackboard, and this blackboard can effectively prevent dust from flying to the harm that human body causes, and avoids the pollution of environment and reflective.
The technical scheme in the invention for solving the technical problem is: a kind of environment friendly blackboard, comprise the blackboard body, it is characterized in that described blackboard body is made of hanging scroll, curtain and spool, the fine sand of the uniform black in curtain surface is equipped with hanging scroll and spool respectively at the upper/lower terminal of curtain.
The beneficial effects of the utility model are: win conveniently, can roll curtain and band after use concentrates from the classroom and to clear up and wiping, dust from flying, the able-bodied problem of harm Faculty and Students when having solved the wiping traditional blackboard, avoid the pollution of environment and reflective, simple to operate, with low cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1 hanging scroll, 2 curtains, 3 spools.
The specific embodiment
As shown in Figure 1.A kind of environment friendly blackboard comprises the blackboard body, and described blackboard body is made of hanging scroll 1, curtain 2 and spool 3, and the fine sand of curtain 2 surperficial uniform black is equipped with hanging scroll 1 and spool 3 respectively at the upper/lower terminal of curtain 2.
Hanging scroll 1 is used to hang curtain 2, and spool 3 is used for curtain 2 is packed up, and curtain 2 is used to write, and wins conveniently, can roll curtain 1 and band and concentrate from the classroom and clear up and wiping after use.Dust from flying when having solved the wiping traditional blackboard, the able-bodied problem of harm Faculty and Students are avoided the pollution of environment and reflective, simple to operate, with low cost.
Claims (1)
1. an environment friendly blackboard comprises the blackboard body, it is characterized in that, described blackboard body is made of hanging scroll, curtain and spool, and the fine sand of the uniform black in curtain surface is equipped with hanging scroll and spool respectively at the upper/lower terminal of curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200090673U CN201931847U (en) | 2011-01-13 | 2011-01-13 | Environmentally-friendly blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200090673U CN201931847U (en) | 2011-01-13 | 2011-01-13 | Environmentally-friendly blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931847U true CN201931847U (en) | 2011-08-17 |
Family
ID=44443384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200090673U Expired - Fee Related CN201931847U (en) | 2011-01-13 | 2011-01-13 | Environmentally-friendly blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931847U (en) |
-
2011
- 2011-01-13 CN CN2011200090673U patent/CN201931847U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20120113 |