CN116887086A - Broadcasting power amplifier - Google Patents
Broadcasting power amplifier Download PDFInfo
- Publication number
- CN116887086A CN116887086A CN202310852293.5A CN202310852293A CN116887086A CN 116887086 A CN116887086 A CN 116887086A CN 202310852293 A CN202310852293 A CN 202310852293A CN 116887086 A CN116887086 A CN 116887086A
- Authority
- CN
- China
- Prior art keywords
- power amplifier
- heat
- heat dissipation
- disposed
- fastening
- 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.)
- Pending
Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 43
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
Abstract
The invention provides a broadcast power amplifier, which comprises a power amplifier body and a heat dissipation assembly: the power amplifier body comprises a shell; the heat dissipation assembly comprises a first heat dissipation opening, a second heat dissipation opening, a fan module arranged in the installation cavity, a cover plate arranged on one side of the upper cover part in a rotating mode, and a fastening bolt arranged at one end of the bottom plate part, wherein a fastening groove is formed in one side of the cover plate. In the use, through connecting the one end of the apron of current power amplifier and the bottom of the power amplifier of upside thereof and forming the aviation baffle, derive the heat flow of sending from first thermovent one side from the outside of power amplifier, prevent the heat flow that sends from first thermovent direct with the power amplifier contact of top, influence the heat dissipation, the surface heat extraction area of apron can be improved to inserted sheet portion simultaneously, improve radiating efficiency, thereby reduce the influence to the power amplifier of top, when power amplifier standby state, the apron can be covered and establish on first thermovent, inserted sheet portion inserts and locates in the first thermovent, play dirt-proof effect.
Description
Technical Field
The invention relates to the technical field of power amplifiers, in particular to a broadcast power amplifier.
Background
The power amplifier is called as a power amplifier for short, and is the most basic equipment in an audio system, and the task of the power amplifier is to amplify weak electric signals from a signal source so as to drive a loudspeaker to emit sound. The broadcast power amplifier refers to power amplifier equipment in a public broadcast system. Aiming at the use scenes of large-scale activities such as marathon, a plurality of high-power sound boxes are required to be configured for use, and in general, a single power amplifier cannot meet the requirement of high-power output, and a public broadcasting system is generally provided with a plurality of power amplifiers which are arranged in series. In the use process, because components such as a power amplifier tube in the power amplifier can generate a large amount of heat, a heat dissipation module is usually arranged in the power amplifier, and heat dissipation openings are formed in the upper cover and the side wall of the power amplifier.
In the prior art, in order to save space, a plurality of power amplifier opportunities that establish ties set up are fixed through the form that stacks from top to bottom, in the use, by fan follow power amplifier top exhaust heat can influence the power amplifier of its upside, and then influence the normal use of power amplifier, lead to the output audio amplifier to appear because of the noise that abnormal current leads to, or lead to the phenomenon of unable normal broadcast such as silence because of the power amplifier trouble to influence the experience effect of runner and spectator in participating in the marathon activity.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a broadcasting power amplifier and aims to solve the technical problem that the power amplifiers which are mutually overlapped are unfavorable for heat dissipation in the prior art.
In order to achieve the above object, the present invention is achieved by the following technical scheme: a broadcasting power amplifier comprises a power amplifier body and a heat dissipation assembly: the power amplifier body comprises a shell, wherein the shell comprises an upper cover part, a bottom plate part and side wall parts surrounding the upper cover part and the bottom plate part, the side wall parts are surrounded to form an installation cavity for placing a power amplifier module, and the power amplifier module comprises a circuit board fixed on the bottom plate part and a plurality of power amplifier tubes arranged on the circuit board; the heat radiation assembly comprises a first heat radiation opening formed in the upper cover part, a second heat radiation opening formed in the side wall part, and a fan module arranged in the mounting cavity, wherein a cover plate is rotatably arranged on one side of the middle part of the upper cover part through a rotating shaft, the cover plate comprises a cover body part and an inserting piece part arranged on one side of the cover body part, the inserting piece part is correspondingly arranged with the first heat radiation opening, the heat radiation assembly further comprises a fastening bolt which is arranged at one end of the bottom plate part in a threaded connection mode, the fastening bolt is close to one side of the side wall of the shell, and a fastening groove which is correspondingly arranged with the fastening bolt is formed in one side of the cover plate, which is far away from the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that: through setting up the apron in one side of upper cover portion, in the use, through connecting the one end of the apron of current power amplifier and the bottom of the power amplifier of upside thereof and form the aviation baffle, derive the heat flow that sends from first thermovent one side from the outside of power amplifier, prevent that the heat flow that sends from first thermovent from directly contacting with the power amplifier of top, influence the heat dissipation, the apron includes lid portion simultaneously, and locates the inserted sheet portion of lid portion one side can improve the surface heat extraction area of apron through setting up above-mentioned inserted sheet portion, improve radiating efficiency to reduce the influence to the power amplifier of top, with the normal use of high power under the assurance power amplifier stacks the state, make the sound box output normally broadcast, improve the user and the spectator's of large-scale activity scene such as marathon experience, when the power amplifier standby state simultaneously, the apron can be covered to establish on first thermovent, and the inserted sheet portion inserts and locates in the first thermovent, plays dirt-proof effect.
According to an aspect of the above technical solution, the cover plate further includes a connection portion formed by extending one end of the cover body obliquely, the connection portion is far away from the rotating shaft, and the fastening slot is formed in the connection portion.
According to an aspect of the above-mentioned aspect, the fastening groove includes a fastening portion, and an opening portion formed by extending one end of the fastening portion toward the outer edge side of the connecting portion.
According to an aspect of the above technical solution, the fastening bolt includes a screw portion screwed to one side of the bottom plate portion, and a bolt portion provided on the screw portion, a first compression pad is provided on a side of the bolt portion adjacent to the screw portion, and a second compression pad is provided on an outer edge side of the fastening portion.
According to an aspect of the above technical solution, the heat dissipation assembly further includes a heat dissipation fin disposed in the mounting cavity, a heat conduction plate is disposed on one side of the heat dissipation fin, and a heat conduction pipe is disposed between each of the power amplification tubes and the heat conduction plate.
According to an aspect of the foregoing technical disclosure, the fan module includes a first fan disposed on one side of the first heat dissipation port, and a second fan disposed on one side of the second heat dissipation port, an air outlet of the first fan is disposed towards the first heat dissipation port, and an air inlet of the second fan is disposed towards the second heat dissipation port.
According to an aspect of the above technical solution, the heat dissipation assembly further includes a dust screen disposed at one side of the second heat dissipation port.
According to an aspect of the above technical solution, the power amplifier body further includes a leg disposed at one side of the bottom plate portion.
Drawings
Fig. 1 is a schematic diagram of a broadcast power amplifier according to an embodiment of the invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of a cover plate and a second compression pad according to an embodiment of the invention;
fig. 4 is a schematic diagram of a part of an internal structure of a broadcast power amplifier according to an embodiment of the invention;
fig. 5 is a schematic diagram of a stacked state of two broadcast power amplifiers according to an embodiment of the present invention;
description of main reference numerals:
upper cover 11, side wall 12, bottom 13, leg 14, first heat sink 21, second heat sink 22, cover 30, cover 31, insert 32, connection 33, fastening slot 34, fastening 34a, opening 34b, second compression pad 35, fastening bolt 40, screw 41, bolt 42, first compression pad 43, heat conductive plate 51, heat sink 52, first fan 53, second fan 54;
the invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, a broadcast power amplifier according to an embodiment of the invention includes a power amplifier body and a heat dissipation assembly.
The power amplifier body comprises a housing, the housing comprises an upper cover part 11, a bottom plate part 13 and a side wall part 12 enclosing the upper cover part 11 and the bottom plate part 13, the side wall part 12 encloses a mounting cavity for placing a power amplifier module, and the power amplifier module comprises a circuit board (not shown) fixed on the bottom plate part 13 and a plurality of power amplifier tubes (not shown) arranged on the circuit board. The power amplifier body further includes a leg 14 provided on one side of the bottom plate portion 13.
The heat dissipation assembly comprises a first heat dissipation opening 21 formed in the upper cover 11, a second heat dissipation opening 22 formed in the side wall 12, and a fan module arranged in the mounting cavity, wherein a cover plate 30 is rotatably arranged on one side of the middle of the upper cover 11 through a rotating shaft, the cover plate 30 comprises a cover body 31 and an inserting piece 32 arranged on one side of the cover body 31, the inserting piece 32 is correspondingly arranged with the first heat dissipation opening 21, the heat dissipation assembly further comprises a fastening bolt 40 which is in threaded connection with one end of the bottom plate 13, the fastening bolt 40 is arranged on one side, close to the side wall of the housing, of the cover plate 30, and a fastening groove 34 which is correspondingly arranged with the fastening bolt 40 is arranged on one side, far away from the rotating shaft, of the cover plate 30.
Specifically, in this embodiment, the cover plate 30 further includes a connection portion 33 formed by extending one end of the cover body 31 obliquely, the connection portion 33 is disposed away from the rotating shaft, and the fastening slot 34 is opened on the connection portion 33. The fastening groove 34 includes a fastening portion 34a and an opening 34b formed by extending one end of the fastening portion 34a toward the outer edge of the connecting portion 33. In some application scenarios of the present embodiment, by providing the opening 34b, the fastening bolt 40 is only required to be screwed slightly away from the outer wall of the housing during use, so that a gap is formed between the fastening bolt 40 and the housing, and the fastening portion 34a is inserted/withdrawn along one side of the opening 34b, so that the fixing and the removing of the cover plate 30 can be quickly completed.
In some embodiments, the fastening bolt 40 includes a threaded rod portion 41 screwed to the bottom plate portion 13, and a bolt portion 42 provided on the threaded rod portion 41, wherein a first pressing pad 43 is provided on a side of the bolt portion 42 adjacent to the threaded rod portion 41, and a second pressing pad 35 is provided on a side of an outer edge of the fastening portion 34 a. The first pressing pad 43 and the second pressing pad 35 are made of silica gel, and the fixing effect of the cover plate 30 relative to the housing can be improved by providing the pressing pads.
In some embodiments, the heat dissipation assembly further includes a heat dissipation fin 52 disposed in the mounting cavity, a heat conducting plate 51 is disposed on one side of the heat dissipation fin 52, and a heat conducting pipe (not shown) is disposed between each of the power amplifier pipes and the heat conducting plate 51. The fan module includes a first fan 53 disposed at one side of the first heat dissipation port 21, and a second fan 54 disposed at one side of the second heat dissipation port 22, wherein an air outlet of the first fan 53 is disposed towards the first heat dissipation port 21, and an air inlet of the second fan 54 is disposed towards the second heat dissipation port 22. In some of the application scenarios, the heat emitted by the power amplification tube is transferred to the heat conducting plate 51 through the heat pipe and the heat conducting liquid in the heat pipe, the heat conducting plate 51 dissipates heat through the heat dissipating fins 52, when the temperature in the installation cavity is higher, cold air at one side of the second heat dissipating port 22 is sucked into the installation cavity through the second fan 54, part of the heat on the heat dissipating fins 52 is taken away to form heat flow, and meanwhile, the heat flow is discharged from the first heat dissipating port 21 through the first fan 53.
In some embodiments, to prevent dust from entering the mounting cavity through the second heat dissipation port 22, the heat dissipation assembly further includes a dust screen disposed on one side of the second heat dissipation port 22.
In summary, in the broadcast power amplifier according to the above embodiment of the present invention, the cover plate 30 is disposed on one side of the upper cover 11, during the use process, one end of the cover plate 30 of the current power amplifier is connected to the bottom of the power amplifier on the upper side thereof to form the air deflector, the heat flow emitted from one side of the first heat dissipation port 21 is led out from the outer side of the power amplifier, the heat flow emitted from the first heat dissipation port 21 is prevented from directly contacting with the power amplifier above to affect heat dissipation, meanwhile, the cover plate 30 includes the cover body 31 and the insert piece portion 32 disposed on one side of the cover body 31, by disposing the insert piece portion 32, the surface heat dissipation area of the cover plate 30 can be increased, the heat dissipation efficiency can be improved, thereby reducing the influence on the power amplifier above, so as to ensure the normal use of high power under the power amplifier, and to enable the sound box output end to play normally, and improve the experience of the large-scale active site runners such as marathon and viewers.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (8)
1. A broadcast power amplifier, comprising:
the power amplifier comprises a power amplifier body, wherein the power amplifier body comprises a shell, the shell comprises an upper cover part, a bottom plate part and side wall parts surrounding the upper cover part and the bottom plate part, the side wall parts are surrounded to form an installation cavity for placing a power amplifier module, and the power amplifier module comprises a circuit board fixed on the bottom plate part and a plurality of power amplifier tubes arranged on the circuit board;
the heat radiation assembly comprises a first heat radiation opening formed in the upper cover part, a second heat radiation opening formed in the side wall part, and a fan module arranged in the mounting cavity, wherein a cover plate is rotatably arranged on one side of the middle of the upper cover part through a rotating shaft, the cover plate comprises a cover body part and an inserting piece part arranged on one side of the cover body part, the inserting piece part is correspondingly arranged with the first heat radiation opening, the heat radiation assembly further comprises a fastening bolt which is arranged at one end of the bottom plate part in a threaded connection mode, the fastening bolt is close to one side of the side wall of the shell, and a fastening groove which is correspondingly arranged with the fastening bolt is formed in one side, away from the rotating shaft, of the cover plate.
2. The broadcasting power amplifier of claim 1, wherein the cover plate further comprises a connecting portion formed by obliquely extending one end of the cover body, the connecting portion is far away from the rotating shaft, and the fastening groove is formed in the connecting portion.
3. The broadcasting power amplifier of claim 2, wherein the fastening groove comprises a fastening portion and an opening portion formed by extending one end of the fastening portion toward a side of an outer edge of the connection portion.
4. A broadcast power amplifier according to claim 3, wherein the fastening bolt comprises a screw portion screwed to one side of the bottom plate portion, and a bolt portion provided on the screw portion, a first compression pad is provided on one side of the bolt portion adjacent to the screw portion, and a second compression pad is provided on one side of an outer edge of the fastening portion.
5. The broadcast power amplifier of claim 1, wherein the heat dissipation assembly further comprises a heat dissipation fin disposed in the mounting cavity, a heat conduction plate is disposed on one side of the heat dissipation fin, and a heat conduction pipe is disposed between each of the power amplifier pipes and the heat conduction plate.
6. The broadcast power amplifier of claim 1, wherein the fan module comprises a first fan disposed on one side of the first heat sink and a second fan disposed on one side of the second heat sink, an air outlet of the first fan is disposed toward the first heat sink, and an air inlet of the second fan is disposed toward the second heat sink.
7. The broadcast power amplifier of claim 3, wherein the heat sink assembly further comprises a dust screen disposed on a side of the second heat sink.
8. The broadcast power amplifier according to any one of claims 1 to 7, wherein the power amplifier body further comprises a leg provided at one side of the bottom plate portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310852293.5A CN116887086A (en) | 2023-07-12 | 2023-07-12 | Broadcasting power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310852293.5A CN116887086A (en) | 2023-07-12 | 2023-07-12 | Broadcasting power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116887086A true CN116887086A (en) | 2023-10-13 |
Family
ID=88254387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310852293.5A Pending CN116887086A (en) | 2023-07-12 | 2023-07-12 | Broadcasting power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116887086A (en) |
-
2023
- 2023-07-12 CN CN202310852293.5A patent/CN116887086A/en active Pending
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