CN202573539U - Sound amplifying dust-free eraser - Google Patents
Sound amplifying dust-free eraser Download PDFInfo
- Publication number
- CN202573539U CN202573539U CN 201220179126 CN201220179126U CN202573539U CN 202573539 U CN202573539 U CN 202573539U CN 201220179126 CN201220179126 CN 201220179126 CN 201220179126 U CN201220179126 U CN 201220179126U CN 202573539 U CN202573539 U CN 202573539U
- Authority
- CN
- China
- Prior art keywords
- dust
- eraser
- free
- free eraser
- sound
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a sound amplifying dust-free eraser, which comprises a dust-free eraser, wherein one end of a wiping surface of the dust-free eraser is movably connected with a cover body, and a sound amplifier is arranged on the surface of the dust-free eraser far away from the wiping surface. The dust-free eraser can wipe writing on a blackboard surface when used, and teachers can conveniently amplify sound through the sound amplifier. The sound amplifying dust-free eraser has the advantages of simple structure and convenient use and the like, and integrates the dust-free eraser and the sound amplifier into an integrated body, thereby bringing more convenience for use of the teachers and students.
Description
Technical field the utility model relates to a kind of teaching aid, especially a kind of dust-free black board eraser that amplifies.
Background technology is well-known, and along with the increasing of country to educational investment, the teaching aid in the school is equipped with more and more advanced; Therefore blackboard eraser has obtained using widely, but existing dust-free black board eraser function singleness, and for example: instructors is at school the time; In order to make the student can clearly hear teacher's teaching content; Micropkonic frequency of utilization is increasingly high, and existing dust-free black board eraser does not provide the function that amplifies, and does not accomplish one-object-many-purposes; Do not utilize existing resources fully, can not satisfy teachers and students' use needs.
The purpose of summary of the invention the utility model is to provide a kind of dust-free black board eraser that has sound amplification function concurrently, to satisfy teachers and students' use needs.
The utility model comprises dust-free black board eraser, flexibly connects lid at an end of dust-free black board eraser wiping surface, is provided with loudspeaker at blackboard eraser away from the surface of wiping surface.
After adopting said structure, during use, dust-free black board eraser can be wiped the writing on the blackboard of blackboard panel; Loudspeaker makes things convenient for that class hour amplifies on the instructors.
The utlity model has advantages such as simple in structure, easy to use, dust-free black board eraser and loudspeaker are integrated in one, bring greater convenience for teachers and students' use.
Description of drawings Fig. 1 is the schematic perspective view of the utility model.
The specific embodiment comprises dust-free black board eraser 1 in the schematic perspective view of the dust-free black board eraser that amplifies shown in Figure 1, flexibly connect lid 2 at an end of dust-free black board eraser wiping surface, is provided with loudspeaker 3 at blackboard eraser away from the surface of wiping surface; During use, the writing on the blackboard of dust-free black board eraser blackboard wiping plate face capable of using; Blackboard eraser can make things convenient on the instructors away from the loudspeaker of wiping surface one end and amplifies class hour, when using loudspeaker, can lid be placed on the end that blackboard eraser is provided with wiping surface, can avoid hand to contact with the wiping surface of blackboard eraser like this, the health of maintenance hand.
Claims (1)
1. the dust-free black board eraser that amplifies comprises dust-free black board eraser, it is characterized in that: flexibly connect lid at an end of dust-free black board eraser wiping surface, be provided with loudspeaker at blackboard eraser away from the surface of wiping surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179126 CN202573539U (en) | 2012-04-25 | 2012-04-25 | Sound amplifying dust-free eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179126 CN202573539U (en) | 2012-04-25 | 2012-04-25 | Sound amplifying dust-free eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202573539U true CN202573539U (en) | 2012-12-05 |
Family
ID=47242984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220179126 Expired - Fee Related CN202573539U (en) | 2012-04-25 | 2012-04-25 | Sound amplifying dust-free eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202573539U (en) |
-
2012
- 2012-04-25 CN CN 201220179126 patent/CN202573539U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150425 |
|
| EXPY | Termination of patent right or utility model |