CN2604030Y - Wireless sound amplifying system - Google Patents
Wireless sound amplifying system Download PDFInfo
- Publication number
- CN2604030Y CN2604030Y CN 03224540 CN03224540U CN2604030Y CN 2604030 Y CN2604030 Y CN 2604030Y CN 03224540 CN03224540 CN 03224540 CN 03224540 U CN03224540 U CN 03224540U CN 2604030 Y CN2604030 Y CN 2604030Y
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- China
- Prior art keywords
- wireless
- microphone
- utility
- model
- infrared
- 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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- Optical Communication System (AREA)
Abstract
The utility model discloses a wireless amplifying system; the former commonly used wireless FM microphone is only limited to be used in a fixed classroom, and the neighboring classroom using of the microphone is interfered by the same frequency or adjacent frequency electric wave with large feedback of the amplifying, which can cause certain damage to human eardrum. Furthermore, the radio wave of the FM can produce large radiation hazard to the human body. The utility model includes a wireless emitter, an microphone tip and a wireless amplifier. The microphone tip is installed with an infrared emitter, and the wireless amplifier is installed with an infrared receiver. The utility model is extensively used in class and meeting as well.
Description
Technical field
The utility model relates to a kind of wireless public address system.
Background technology
At present, a lot of teachers adopt wire microphone or wireless FM microphone to say the wave volume of class hour with raising, but above-mentioned public address system does not reach desirable result of use, use also very inconvenient: it is confined to fix a classroom and uses, adjacent classroom use can be subjected to frequency or adjacent wave interference frequently, the feedback that amplifies is bigger, can cause certain destruction to people's ear-drum.And when using wireless FM microphone, the electric wave of FM is very big to the radiation hazradial bundle of human body.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of wireless public address system that utilizes infrared, received signal.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of wireless public address system, comprise wireless launcher, miaow head and wireless microphone, and on the miaow head infrared transmitter is housed, infrared receiver is housed on the wireless microphone.
The beneficial effects of the utility model are: owing to adopt infrared, acknowledge(ment) signal, the phenomenon that can not occur the phase mutual interference when use simultaneously in adjacent classroom, and no matter wireless launcher is in any orientation in classroom, and infrared receiver can both clearly receive the signal of emission.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Embodiment
With reference to Fig. 1, wireless launcher 1 joins by holding wire and miaow head 2, and miaow head 2 is equipped with 4, two infrared generators 4 of two infrared transmitter respectively towards the left and right directions of miaow head 2, help the omnibearing emission of voice signal like this, infrared receiver 5 is housed on the wireless microphone 3.During use, sound is sent to wireless launcher 1 by miaow head 2, wireless launcher 1 converts audio signal to digital signal, send by infrared transmitter 4 modulation again, receive little reflected infrared ray digital signal and demodulate audio signal by the infrared receiver on the wireless microphone 35 then, amplify output by audio power again through the volume autotracking unit in the wireless microphone 3.
The number of on the above-mentioned miaow head 2 infrared transmitter 4 being installed can be decided according to actual conditions, if at the place ahead and the right and left of miaow head 2 infrared transmitter 4 is installed all, the effect that amplifies can be better.
Claims (2)
1. wireless public address system, comprise the miaow head (2) and the wireless microphone (3) that are connected with wireless launcher (1) by holding wire, it is characterized in that infrared transmitter (4) is installed on the miaow head (2), infrared receiver (5) is housed on the wireless microphone (3).
2. a kind of wireless public address system according to claim 1 is characterized in that being equipped with on the miaow head (2) two or three infrared transmitter towards different directions (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03224540 CN2604030Y (en) | 2003-03-20 | 2003-03-20 | Wireless sound amplifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03224540 CN2604030Y (en) | 2003-03-20 | 2003-03-20 | Wireless sound amplifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2604030Y true CN2604030Y (en) | 2004-02-18 |
Family
ID=34163405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03224540 Expired - Fee Related CN2604030Y (en) | 2003-03-20 | 2003-03-20 | Wireless sound amplifying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2604030Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774146B (en) * | 2004-11-29 | 2010-05-05 | 孔德伟 | Portable radio loudspeaker |
| CN109769190A (en) * | 2019-03-10 | 2019-05-17 | 赵洁 | A kind of public address equipment with anti-interference function |
-
2003
- 2003-03-20 CN CN 03224540 patent/CN2604030Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774146B (en) * | 2004-11-29 | 2010-05-05 | 孔德伟 | Portable radio loudspeaker |
| CN109769190A (en) * | 2019-03-10 | 2019-05-17 | 赵洁 | A kind of public address equipment with anti-interference function |
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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: 20040218 Termination date: 20120320 |