CN2531596Y - Portable public address set for teaching - Google Patents
Portable public address set for teaching Download PDFInfo
- Publication number
- CN2531596Y CN2531596Y CN 02228628 CN02228628U CN2531596Y CN 2531596 Y CN2531596 Y CN 2531596Y CN 02228628 CN02228628 CN 02228628 CN 02228628 U CN02228628 U CN 02228628U CN 2531596 Y CN2531596 Y CN 2531596Y
- Authority
- CN
- China
- Prior art keywords
- sound box
- built
- wireless microphone
- power amplification
- receiver
- 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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- Transmitters (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The utility model discloses a portable sound amplification device for teaching, comprising a wireless microphone system and a built-in power amplification sound box 1. The wireless microphone system comprises a wireless microphone, a launcher, and a receiver; the adjusting knob 2 of the built-in power amplification sound box 1 is arranged on the back of the sound box 1; the wireless microphone transmits audio signal to the launcher which sends the audio signal to the receiver, and then the receiver transmits the audio signal to the built-in power amplification sound box. The utility model is small in volume, sample in structure, low in cost, and easy for a teacher to operate.
Description
The utility model relates to appliance field.
At present, the teacher says that class hour is in the classroom that reaches the up to a hundred people, teaching sound is very big, and is very painstaking, has many teachers' throat therefore to suffer from the throat disease, and yield loved cause, the existing public address set in market generally is used for meeting room and movie theatre, and volume is big, costs an arm and a leg, and the adjusting turn-knob of audio amplifier all is positioned at the front of audio amplifier, is unfavorable for that teacher says the class hour operation.
The deficiency of use when the purpose of this utility model is exactly to be not suitable for teacher and to impart knowledge to students at existing public address set and a kind of portable teaching public address set is provided, its volume can be very little, being convenient to teacher carries, simple in structure, low price, can reduce teacher's voice labour intensity greatly, and the adjusting turn-knob of audio amplifier is arranged on the position of teacher's handled easily, is convenient to teacher's operation.
The technical solution of the utility model is, portable teaching public address set is made up of wireless microphone system and built-in power amplification sound box 1, and wireless microphone is made up of wireless microphone, reflector and receiver; The adjusting turn-knob 2 of built-in power amplification sound box 1 is positioned at the back side of built-in power amplification sound box 1; Wireless microphone is defeated by reflector with audio signal, and reflector sends to receiver with this signal, and receiver is transported to built-in power amplification sound box after receiving this signal.
Advantage of the present utility model is, because wireless microphone system and built-in power amplification sound box are combined, and the adjusting turn-knob of audio amplifier is arranged on the back side of audio amplifier, thereby it is little to make this public address set have a volume, and price simple in structure is low, and teacher is easy to operate.
Accompanying drawing 1 is the utility model circuit block diagram.
Accompanying drawing 2 is the structural representation of built-in power amplification sound box of the present utility model
Embodiment: wireless microphone system can be selected commercially available waist-mounted type wireless microphone system for use, being convenient to teacher says and walks about class hour, its reflector can hang on the waist, microphone is selected mini microphone for use, can be fixed on the neckline with clip, reflector is electrically connected with built-in power amplification sound box 1, built-in power amplification sound box is selected for use small-sized, the adjusting turn-knob 2 of built-in power amplification sound box will be placed in the back side of audio amplifier, because of the teaching usefulness audio amplifier generally be to be placed on the lectern, audio amplifier just facing to the student, teacher then is positioned at the audio amplifier back side, thereby the adjusting turn-knob of audio amplifier is positioned at the back side of audio amplifier, makes things convenient for teacher's adjusted turn-knob.The utility model can with optimum organizations such as computer, DVD, extend to other field, realize large-scale industrial production.
Claims (1)
1, portable teaching public address set is characterized in that: be made up of wireless microphone system and built-in power amplification sound box (1), wireless microphone is made up of wireless microphone, reflector and receiver; The adjusting turn-knob (2) of built-in power amplification sound box (1) is positioned at the back side of built-in power amplification sound box (1); Wireless microphone is defeated by reflector with audio signal, and reflector sends to receiver with this signal, and receiver is transported to built-in power amplification sound box after receiving this signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228628 CN2531596Y (en) | 2002-03-11 | 2002-03-11 | Portable public address set for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228628 CN2531596Y (en) | 2002-03-11 | 2002-03-11 | Portable public address set for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531596Y true CN2531596Y (en) | 2003-01-15 |
Family
ID=33705136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228628 Expired - Fee Related CN2531596Y (en) | 2002-03-11 | 2002-03-11 | Portable public address set for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531596Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923792A (en) * | 2010-05-11 | 2010-12-22 | 广东远创科教电脑发展有限公司 | Wireless multimedia teaching system and method |
-
2002
- 2002-03-11 CN CN 02228628 patent/CN2531596Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923792A (en) * | 2010-05-11 | 2010-12-22 | 广东远创科教电脑发展有限公司 | Wireless multimedia teaching system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |