CN209806073U - Audio amplifying device - Google Patents
Audio amplifying device Download PDFInfo
- Publication number
- CN209806073U CN209806073U CN201920680697.XU CN201920680697U CN209806073U CN 209806073 U CN209806073 U CN 209806073U CN 201920680697 U CN201920680697 U CN 201920680697U CN 209806073 U CN209806073 U CN 209806073U
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- China
- Prior art keywords
- circuit board
- audio
- protective shell
- input port
- board
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- Expired - Fee Related
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Abstract
The utility model discloses an audio amplifying device, which comprises a protective shell and a circuit board arranged in the protective shell; the two ends of the protective shell are respectively provided with a dustproof breathable net, one end of the interior of the protective shell is provided with a blowing fan, and the wall of the protective shell is provided with a microphone input port, a data line input port, a power supply input port and a signal output port; the circuit board comprises an audio processing chip board, an audio amplifying circuit board, an overvoltage protection circuit board and a voltage processing circuit board which are arranged up and down. The audio amplifying device of the utility model arranges the original large circuit board in a partitioning and layering way, comprises an audio processing chip board, an audio amplifying circuit board, an overvoltage protection circuit board and a voltage processing circuit board which are arranged up and down, reduces the heat concentration, provides more heat dissipation space, and simultaneously can reduce the volume of the device and is convenient to carry; the dustproof ventilation net and the blast fan are mutually matched to further increase the heat dissipation effect of the device.
Description
Technical Field
The utility model relates to an audio processing equipment especially relates to an audio amplification device.
Background
An audio amplifier is a device that reconstructs an incoming audio signal on a sound-producing output element, the reconstructed signal having a desired volume and power level-faithful, efficient and low distortion. The audio frequency range is about 20Hz to 20kHz, so the amplifier must have a good frequency response in this range (smaller when driving a limited frequency band speaker, such as a woofer or tweeter). The power varies widely from milliwatt for headphones to several watts for TV or PC audio, to tens of watts for "mini" home stereo and car stereo, to hundreds of watts for more powerful home and commercial sound systems, to meet the sound requirements of a movie theater or auditorium.
The development of the audio amplifier successively goes through three times of an electronic tube (vacuum tube), a bipolar transistor and a field effect tube. The electronic tube audio amplifier has mellow and sweet tone, but has huge volume, high power consumption, unstable work and poor high-frequency response; the bipolar transistor audio amplifier has wide frequency band, large dynamic range, high reliability, long service life and good high-frequency response, but the static power consumption and the on-resistance of the bipolar transistor audio amplifier are large, so that the efficiency is difficult to improve; the field effect tube audio amplifier has the same mellow and sweet tone as the electron tube, and has wide dynamic range, small on-resistance and high efficiency
The audio amplifier has a process of amplifying the power of a signal, and a large amount of heat is generated in the process, so that the problem of heat dissipation of the audio amplifier is always solved urgently by various large-brand merchants.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a good audio amplifier of radiating effect.
The purpose of the utility model can be achieved by adopting the following technical scheme: an audio amplification device comprises a protective shell and a circuit board arranged inside the protective shell; the two ends of the protective shell are respectively provided with a dustproof breathable net, one end of the interior of the protective shell is provided with a blowing fan, and the wall of the protective shell is provided with a microphone input port, a data line input port, a power supply input port and a signal output port; the circuit board comprises an audio processing chip board, an audio amplifying circuit board, an overvoltage protection circuit board and a voltage processing circuit board which are arranged up and down.
The utility model discloses still include following subsidiary technical scheme:
The audio processing chip board is internally provided with an audio signal processing module, an analog playing module and a signal comparison module which are connected in sequence, wherein the audio signal processing module is also connected with a microphone input port and a data line input port.
The audio amplification circuit board is connected with the signal output port.
The input end of the overvoltage protection circuit board is connected with the power supply input port, the output end of the overvoltage protection circuit board is connected with the input end of the voltage processing circuit board, and the output end of the voltage processing circuit board is respectively connected with the audio processing chip board and the audio amplification circuit board.
And a display panel is also arranged on the shell wall of the protective shell and is connected with the signal comparison module.
the utility model discloses an audio amplification device beneficial technological effect lies in: the original large circuit board is placed in a partitioning and layering mode and comprises an audio processing chip board, an audio amplifying circuit board, an overvoltage protection circuit board and a voltage processing circuit board which are arranged up and down, so that heat concentration is reduced, more heat dissipation spaces are provided, and the size of the device is reduced and the device is convenient to carry; the dustproof ventilation net and the blast fan are mutually matched to further increase the heat dissipation effect of the device.
Drawings
Fig. 1 is a side sectional view of an audio amplifier according to a preferred embodiment of the present invention.
As shown in the figure: the method comprises the following steps of 1-dustproof ventilation net, 2-display panel, 3-blower fan, 6-protective shell, 7-microphone input port, 8-data line input port, 9-signal output port, 10-power supply input port, 11-audio processing chip board, 12-audio amplification circuit board, 13-overvoltage protection circuit board and 14-voltage processing circuit board.
Detailed Description
In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1, the audio amplifying device of the present embodiment includes a protective case 6 and a circuit board, and the circuit board is fixedly disposed inside the protective case.
The two ends of the protective shell 6 are provided with dustproof breathable nets 1, one end of the interior of the protective shell 6 is provided with a blowing fan 3, and the wall of the protective shell 6 is provided with a microphone input port 7, a data line input port 8, a power supply input port 10 and a signal output port 9. A display panel 2 is also provided on the wall of the protective case 6.
The circuit board comprises an audio processing chip board 11, an audio amplifying circuit board 12, an overvoltage protection circuit board 13 and a voltage processing circuit board 14 which are arranged up and down, wherein the overvoltage protection circuit board 13 and the voltage processing circuit board 14 are in the same column. The audio processing chip board 11 is used for preprocessing and amplifying the audio signal; the audio amplification circuit board 12 is used for performing post-amplification on the audio signal; the overvoltage protection circuit board 13 is used for detecting power supply voltage; the voltage processing circuit board 14 is used for reducing, rectifying and stabilizing the power supply voltage; the circuit board can adopt the existing circuit design. The audio processing chip board 11 is internally provided with an audio signal processing module connected with the microphone input port 7 and the data line input port 8, an analog playing module connected with the audio signal processing module, and a signal comparison module connected with the analog playing module, and the signal comparison module is also connected with the display panel 2. The audio amplification circuit board 12 is connected with the signal output port 9 and is connected with an external device, namely a signal output module through the signal output port 9, and the signal output module comprises earphone output and player output. The input end of the overvoltage protection circuit board 13 is connected with the power input port 10, the output end of the overvoltage protection circuit board 13 is connected with the input end of the voltage processing circuit board 14, and the output end of the voltage processing circuit board 14 is respectively connected with the audio processing chip board 11, the audio amplification circuit board 12 and the signal output module.
The circuit board of the audio amplifying device of the embodiment is arranged in a partitioning and layering mode, so that heat concentration can be reduced, more heat dissipation space can be provided, and the size of the device can be reduced. The dustproof ventilation net 1 and the blast fan 3 are mutually matched to increase the heat dissipation effect of the device. The audio processing chip board 11, the audio amplification circuit board 12 and the signal output module are all connected with the power input port 10, so that the work of each circuit is not influenced, the circuit is convenient to maintain when a certain section of circuit is damaged, only the damaged circuit board needs to be replaced, the whole circuit is not maintained, and the maintenance cost is saved.
The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.
Claims (5)
1. An audio amplification device is characterized by comprising a protective shell and a circuit board arranged in the protective shell; the two ends of the protective shell are respectively provided with a dustproof breathable net, one end of the interior of the protective shell is provided with a blowing fan, and the wall of the protective shell is provided with a microphone input port, a data line input port, a power supply input port and a signal output port; the circuit board comprises an audio processing chip board, an audio amplifying circuit board, an overvoltage protection circuit board and a voltage processing circuit board which are arranged up and down.
2. The audio amplifier device as claimed in claim 1, wherein the audio processing chip board has an audio signal processing module, an analog playing module and a signal comparison module connected in sequence, and the audio signal processing module is further connected to the microphone input port and the data line input port.
3. The audio amplification device of claim 1, wherein the audio amplification circuit board is connected to a signal output port.
4. The audio amplifier device as claimed in claim 1, wherein the input terminal of the over-voltage protection circuit board is connected to the power input port, the output terminal of the over-voltage protection circuit board is connected to the input terminal of the voltage processing circuit board, and the output terminal of the voltage processing circuit board is connected to the audio processing chip board and the audio amplifier circuit board, respectively.
5. The audio amplifier device as claimed in claim 1, wherein a display panel is further disposed on the wall of the protective casing, and the display panel is connected to the signal comparison module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680697.XU CN209806073U (en) | 2019-05-14 | 2019-05-14 | Audio amplifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680697.XU CN209806073U (en) | 2019-05-14 | 2019-05-14 | Audio amplifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209806073U true CN209806073U (en) | 2019-12-17 |
Family
ID=68832480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920680697.XU Expired - Fee Related CN209806073U (en) | 2019-05-14 | 2019-05-14 | Audio amplifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209806073U (en) |
-
2019
- 2019-05-14 CN CN201920680697.XU patent/CN209806073U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20200514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |