CN213661949U

CN213661949U - Power amplifier

Info

Publication number: CN213661949U
Application number: CN202023122983.6U
Authority: CN
Inventors: 李天放
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-07-09
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to a power amplifier, which comprises a blade type case, wherein a power control panel, a first power amplifier board and a second power amplifier board which are sequentially arranged from left to right are tiled and fixed on the bottom plate of the case, and the upper sides of the power control panel, the first power amplifier board and the second power amplifier board are all connected with radiating fins which extend from front to back; a first cooling fan positioned at the rear of the power control panel, a second cooling fan positioned in front of the power control panel, a third cooling fan positioned in front of the first power amplification panel and a fourth cooling fan positioned in front of the second power amplification panel are also fixed on the bottom plate of the case; the rear plate of the case is provided with a rear radiating grid opposite to the first radiating fan, and the front panel of the case is provided with front radiating grids which are arranged in bilateral symmetry. The utility model discloses to the main electric elements who generates heat of quick-witted incasement, all dispose radiator fan alone to with external fan setting at calorific capacity biggest power control panel rear, thereby realized the good heat dissipation of quick-witted case.

Description

Power amplifier

Technical Field

The utility model relates to a power amplifier.

Background

At present, the power amplifier has good sound amplification effect and strong capability of improving the sound quality, and is widely applied to audio-visual systems in occasions of home entertainment, commercial performance, conference sound amplification and the like. Because current power amplifier self-protection ability is poor, constantly generates heat at the during operation, leads to power amplifier body temperature constantly to rise, and high temperature makes the inside components and parts of power amplifier easily age and deteriorate, can lead to the power amplifier to damage or catch fire seriously to and when the output of power amplifier produced overload trouble, easily make the power amplifier electric current too big and the emergence of phenomenon such as burning out, arouse the awkward scene that equipment damage and error protection lead to.

In the prior art, in order to facilitate heat dissipation of a power amplifier, a heat dissipation fan is generally installed on a side surface of a heat dissipation device to dissipate heat of a heat generating component in a chassis, for example, a power amplifier with a self-protection function disclosed in the prior patent CN2018114012430 is disclosed. However, the limited power of a single heat dissipation fan still causes the heat in the chassis not to be removed in time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power amplifier that heat dispersion is good, its technical scheme as follows:

the power amplifier comprises a blade-type case, a power control board, a first power amplification board and a second power amplification board which are sequentially arranged from left to right are tiled and fixed on a bottom plate of the case, and radiating fins extending forwards and backwards are connected to the upper sides of the power control board, the first power amplification board and the second power amplification board; and

a first cooling fan positioned at the rear of the power control panel, a second cooling fan positioned in front of the power control panel, a third cooling fan positioned in front of the first power amplification panel and a fourth cooling fan positioned in front of the second power amplification panel are also fixed on the bottom plate of the case; and

the rear plate of the case is provided with a rear radiating grid opposite to the first radiating fan, and the front panel of the case is provided with front radiating grids which are arranged in bilateral symmetry.

Preferably, the front grille includes a left half portion located on the left side of the front panel and a right half portion located on the right side of the front panel, the left half portion and the right half portion respectively have rectangular windows with long sides extending left and right, and the left half portion has a hollow window with hollow characters.

Preferably, a switch control panel provided with a bluetooth control circuit and/or a WIFI control circuit and/or a cellular network control circuit is fixed on the left wall plate of the chassis in a tiled manner.

Preferably, a touch screen exposed from the front of the front panel is fixed in the middle of the front panel, and a DSP chip is fixed behind the touch screen.

The utility model has the advantages that:

the utility model discloses to the main electric elements who generates heat of quick-witted incasement, all dispose radiator fan alone to with external fan setting at calorific capacity biggest power control panel rear, thereby through the rational layout to quick-witted incasement heat dissipation channel, realized the good heat dissipation of quick-witted case.

Drawings

Fig. 1 is a schematic layout diagram of electrical components in the power amplifier case of the present invention;

fig. 2 is a schematic diagram of the power amplifier front panel of the present invention.

Detailed Description

Referring to fig. 1 to 2, the power amplifier includes a blade-type chassis 1, a power control board 2, a first power amplifier board 3 and a second power amplifier board 4 sequentially arranged from left to right are tiled and fixed on a bottom plate of the chassis 1, and the upper sides of the power control board 2, the first power amplifier board 3 and the second power amplifier board 4 are all connected with cooling fins 5 extending from front to back. A first cooling fan 6 located behind the power control board 2, a second cooling fan 7 located in front of the power control board 2, a third cooling fan 8 located in front of the first power amplifier board 3, and a fourth cooling fan 9 located in front of the second power amplifier board 4 are further fixed on the bottom board of the chassis 1. A rear radiating grid opposite to the first radiating fan 6 is arranged on the rear plate of the case 1, and front radiating grids which are arranged in bilateral symmetry are arranged on the front panel of the case 1.

When the heat dissipation device is used, the first heat dissipation fan 6 draws outside air into the chassis 1, and then the outside air is discharged from the front heat dissipation grid on the front panel through the second heat dissipation fan 7, the third heat dissipation fan 8 and the fourth heat dissipation fan 9 after passing through the power control board 2, the first power amplification board 3 and the second power amplification board 4. Preferably, in order to further increase the heat dissipation effect of the chassis 1, a heat dissipation grid located behind the first power amplifier board 3 and the second power amplifier board 4 may be added to the rear board of the chassis 1.

Preceding radiator-grid is including being located the left half of front panel left side and the right half that is located the front panel right side, and left half and right half have long limit respectively and control the rectangle window 10 that extends, and left half has the fretwork window 11 that adopts the fretwork word appearance. A switch control panel 12 provided with a bluetooth control circuit and/or a WIFI control circuit and/or a cellular network control circuit is fixed on the left wall plate of the case 1 in a tiled manner. A touch screen 13 exposed from the front of the front panel is fixed in the middle of the front panel, and a DSP chip is fixed behind the touch screen 13.

The right side of the front panel is also provided with a USB interface 14, and the right side of the rear half is also fixed with two CH1/CH2 input ends 15 and two CH3/CH4 output ends 16.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, but should not be construed as limiting the claims, and the present invention is not limited to the above-described embodiments, but may be modified in various ways. In summary, all changes that can be made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. The power amplifier comprises a blade type case and is characterized in that a power control board, a first power amplification board and a second power amplification board which are sequentially arranged from left to right are tiled and fixed on a bottom plate of the case, and the upper sides of the power control board, the first power amplification board and the second power amplification board are connected with radiating fins extending forwards and backwards; and

2. The power amplifier of claim 1, wherein the front heat dissipation grid comprises a left half part located on the left side of the front panel and a right half part located on the right side of the front panel, the left half part and the right half part are respectively provided with a rectangular window with long sides extending left and right, and the left half part is provided with a hollow window in a hollow character shape.

3. The power amplifier of claim 1, wherein a switch control board equipped with a bluetooth control circuit and/or a WIFI control circuit and/or a cellular network control circuit is tiled and fixed on the left wall plate of the case.

4. The power amplifier according to any one of claims 1 to 3, wherein a touch screen exposed from the front of the front panel is fixed in the center of the front panel, and a DSP chip is fixed behind the touch screen.