CN207201208U - A kind of power amplifier - Google Patents
A kind of power amplifier Download PDFInfo
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- CN207201208U CN207201208U CN201721165538.3U CN201721165538U CN207201208U CN 207201208 U CN207201208 U CN 207201208U CN 201721165538 U CN201721165538 U CN 201721165538U CN 207201208 U CN207201208 U CN 207201208U
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- power amplifier
- aluminium base
- pcb board
- heating power
- power component
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Abstract
The utility model embodiment discloses a kind of power amplifier, by heating power component be fixed on by way of paster with the aluminium base of power amplifier cage connection, non- heating power component is fixed on pcb board, aluminium base and pcb board are provided separately and be electrically connected with, realize to lead the heat that heating power component is sent by aluminium base and radiated on power amplifier shell, solve to connect metal heat sink in heating power component surface at present and smear the mode of heat-conducting silicone grease between metal heat sink and heating power component and radiated the process and difficulty that existing increase assembling processes, heat-conducting silicone grease, which smears the irregular bubble that easily produces, reduces the technical problem of radiating effect.
Description
Technical field
It the utility model is related to power amplifier field, more particularly to a kind of power amplifier.
Background technology
Power amplifier (English name：Power amplifier), referred to as " power amplifier ", refer in given distortion rate condition
Under, maximum power output can be produced to drive the amplifier of a certain load (such as loudspeaker).Power amplifier is in whole sound equipment
The pivotal role of " tissue, coordination " is served in system, can dominate whole system to a certain extent provide good sound
Matter exports.
Due to the limitation of conversion efficiency, a part of electric energy is inevitably converted into heat energy in amplification process.This portion
Divide heat energy to be radiated using metal heat sink, just can guarantee that the safe and stable operation of equipment.Existing power amplifier
Radiating mode be：Using plug-in type power component, and the mode being screwed, the power component of heat will be produced
It is fixed on huge aluminium radiator or copper metal heat sink, the heat on the power component of heating is transmitted to gold
Belong to radiator, then heat is blown to beyond cabinet by heavy caliber fan, reaches the purpose of radiating.
But there are many technical problems in existing radiating mode.First, plug-in type power component is fixed using screw
On metal heat sink so that the radiating surface of heating power component is connected with metal heat sink but is difficult to accomplish to completely attach to,
Air gap inevitably is produced in contact surface, the conduction of heat is greatly hindered, causes in heating power component
Heat timely can not be transmitted on radiator, do not reach expected radiating effect, endanger the safety of heating power component.
Although this problem can be alleviated by way of smearing heat-conducting silicone grease, the process and difficulty of assembling processing are the increase in,
And heat-conducting silicone grease smearing is irregular still to produce thermal resistance air bubble, and the requirement to packaging technology is higher.
Secondly, the radiating surface of most of heating power component is connected with internal electrode, its electricity of different components
It is extremely different.Because radiator is aluminum or copper material, it is electric conductor, different types of heating power component is fixed on
When on same metal heat sink, it is necessary to be dielectrically separated from using the insulating concrete mica plate of high withstand voltage, significantly increase production
The technology difficulty of assembling, and cost is higher.
Then, because radiating element is closed in cabinet inside, cabinet becomes the obturator of heat, hinders dissipating for heat
Hair, so needing to increase aluminum or copper metal heat sink volume, in advance sharing the high temperature of heating power component
On huge metal heat sink, then blown out again by fan outside cabinet, can be only achieved the purpose of radiating；And aluminum or copper
The price of matter metal heat sink is very expensive, the cost of the product directly improved, and adds the weight of product.
Finally, using plug-in type heating power component and the mode of metal heat sink is screwed in, it is necessary to people
Work is secondary, and each heating power component is fixed with screw, very big to artificial consuming, and in order to ensure product
It is attractive in appearance, it is necessary to which the position of component fixed to each screw is controlled, production efficiency is relatively low.
Utility model content
The utility model embodiment discloses a kind of power amplifier, and heating power component is consolidated by way of paster
Be scheduled on on the aluminium base of power amplifier cage connection, non-heating power component is fixed on pcb board, by aluminium base and
Pcb board is provided separately and is electrically connected with, and realizes and the heat that heating power component is sent is led into power by aluminium base put
Radiated on big device shell, solve and connect metal heat sink and in metal heat sink in heating power component surface at present
Smeared between heating power component heat-conducting silicone grease mode radiated process that existing increase assembling processes and difficulty,
Heat-conducting silicone grease, which smears the irregular bubble that easily produces, reduces the technical problem of radiating effect.
The utility model embodiment provides power amplifier, including：Power amplifier shell, it is fixed on the power and puts
Aluminium base, heating power component, pcb board, non-heating power component on big device inner surface of outer cover；
The heating power component is fixed on by way of paster on the aluminium base；
The non-heating power component is fixed on the pcb board；
The pcb board is fixed on above the aluminium base；
Circuit on the pcb board is electrically connected with the circuit on the aluminium base.
Preferably,
The power amplifier also includes conductive stud；
Circuit on the pcb board is electrically connected with by the circuit on the conductive stud and the aluminium base.
Preferably,
The conductive stud is copper stud.
Preferably,
The power amplifier also includes conductive screw；
Positioning hole is provided with the pcb board and the aluminium base；
The conductive stud is provided at both ends with screw hole；
The conductive screw is connected through the positioning hole with the conductive stud.
Preferably,
Heat emission hole is provided with the power amplifier shell.
Preferably,
Ventilating duct is formed between the pcb board and the aluminium base；
The heat emission hole is arranged on stating on power amplifier shell at the ventilating duct port.
Preferably,
Radiator fan is provided with ventilating duct between the pcb board and the aluminium base.
Preferably,
The radiator fan is arranged on the end of the ventilating duct.
Preferably,
The power amplifier shell is connected side with the aluminium base and is provided with radiator.
Preferably,
The spreader surface is provided with some grooves, for increasing heat radiation area.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
1st, the utility model embodiment provides a kind of power amplifier, by heating power component by way of paster
It is fixed on on the aluminium base of power amplifier cage connection, non-heating power component being fixed on pcb board, by aluminium base
It is provided separately and is electrically connected with pcb board, realizes and the heat that heating power component is sent is led into power by aluminium base
Radiated on amplifier housing, eliminate the metal heat sink of power amplifier enclosure, greatly reduce product
Cost, while also greatly reduce the volume of whole power amplifier, reduces associated packaging, transport and store in a warehouse into
This, solves and connects metal heat sink and in metal heat sink and heating power component in heating power component surface at present
Between smear heat-conducting silicone grease mode radiated existing increase assembling processing process and difficulty, heat-conducting silicone grease smearing it is irregular
Easily produce bubble reduce radiating effect technical problem, and the radiating surface of heating power component by way of welding with
Aluminium base completely attaches to, and the phenomenon of thermal resistance air-gap is not present in inside, it can be ensured that the heat energy inside heating power component
It is enough to be quickly transmitted to completely on aluminium base, and then be transmitted on power amplifier shell and radiated；By way of paster
It is fixed on can be replaced manually to the work(that generates heat using SMT machine Surface Mount technologies on the aluminium base of power amplifier cage connection
The processes such as the plug-in unit of rate component, installation, cost of labor is both effectively reduced, and can ensures the aesthetic property of product, and is lifted
The uniformity of product.
2nd, because the radiating surface of most of heating power component is connected with internal electrode, its electricity of different components
It is extremely different, and radiator is aluminum or copper material, is electric conductor, so different types of heating power component is fixed
When on same metal heat sink, it is necessary to be dielectrically separated from using the insulating concrete mica plate of high withstand voltage, significantly increase life
The technology difficulty of assembling is produced, and cost is higher, therefore use will for a kind of power amplifier for providing of the utility model embodiment
Heating power component is fixed on aluminium base by way of paster, because aluminium base carries insulating barrier, so need not set
Extra insulating materials is put, reduces the technology difficulty and cost of generation assembling.
3rd, the utility model embodiment provides a kind of power amplifier, by high thermal conductivity aluminum matrix plate assembling when directly with gold
Category cabinet bottom large area is connected, and metal chassis is changed into the absorber of heat by the obstruction body of heat, instead of metal
The function of radiator, and directly externally radiated using the huge surface of metal chassis, significantly improve the effect of radiating.
4th, the utility model embodiment provides a kind of power amplifier, by heating power component by way of paster
It is fixed on on the aluminium base of power amplifier cage connection, non-heating power component being fixed on pcb board, by aluminium base
It is arranged to double-layer structure up and down with pcb board, so as to by the aluminium of non-heating power component and heating power component and high temperature
Substrate separates, and effectively solves influence of the temperature to common component working life, improves the service life of product；Meanwhile aluminium
A complete ventilating duct is formd between substrate and pcb board, using the compression of ventilating duct, even if the radiating using very little
Fan can produce higher wind speed, so as to quickly exclude the surface temperature of heating power component outside cabinet.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of internal structure schematic diagram of the power amplifier provided in the utility model embodiment；
Fig. 2 is that heating power component and aluminium base are hardened in a kind of power amplifier provided in the utility model embodiment
The schematic diagram of conjunction；
Fig. 3 is a kind of radiating schematic diagram of the power amplifier provided in the utility model embodiment.
Embodiment
The utility model embodiment discloses a kind of power amplifier, by heating power component 8 by way of paster
It is fixed on the aluminium base 2 being connected with power amplifier shell 7, non-heating power component 8 is fixed on pcb board 1, by aluminium
Substrate 2 and pcb board 1 are provided separately and are electrically connected with, and realize the heat that heating power component 8 is sent passing through aluminium base 2
Lead and radiated on power amplifier shell 7, solve and connect metal heat sink simultaneously on the surface of heating power component 8 at present
The mode existing increase assembling of being radiated that heat-conducting silicone grease is smeared between metal heat sink and heating power component 8 is processed
Process and difficulty, heat-conducting silicone grease smear it is irregular easily produce bubble reduce radiating effect technical problem.
Fig. 1 to Fig. 3 is referred to, a kind of one embodiment bag of the power amplifier provided in the utility model embodiment
Include：Power amplifier shell 7, the aluminium base 2 being fixed on the inner surface of power amplifier shell 7, heating power component 8, PCB
Plate 1, non-heating power component 8, heating power component 8 are fixed on by way of paster on aluminium base 2, non-heating power
Component 8 is fixed on pcb board 1, and pcb board 1 is fixed on above aluminium base 2, the circuit on pcb board 1 and the circuit on aluminium base 2
It is electrically connected with；It should be noted that as shown in Fig. 2 aluminium base 2 is a kind of metal-based copper-clad plate with good heat radiating function,
Typically it is made up of three-decker, is circuit layer (copper foil) 10, insulating barrier 11 and metal-based layer 12 respectively, heating power component
8 be to be welded on by scolding tin 9 on circuit layer (copper foil) 10, is combined into one the function of pcb board and metal heat sink so as to realize.
Power amplifier can also include conductive stud 3, the circuit on pcb board 1 pass through conductive stud 3 with aluminium base 2
Circuit be electrically connected with, wherein conductive stud 3 be preferably copper stud.
Power amplifier also includes conductive screw 4, and positioning hole, 3 liang of conductive stud are provided with pcb board 1 and aluminium base 2
End is provided with screw hole, and conductive screw 4 is connected through positioning hole with conductive stud 3.
In order to strengthen the radiating effect of power amplifier, heat emission hole 6 is provided with power amplifier shell 7, and pcb board 1
Ventilating duct is formed between aluminium base 2, heat emission hole 6 is preferably provided at stating on power amplifier shell 7 at ventilating duct port；
Radiator fan 5 is also provided with ventilating duct between pcb board 1 and aluminium base 2, radiator fan 5 is preferably provided at ventilating duct
End.
In order to further strengthen the radiating effect of power amplifier, side is connected with aluminium base 2 in power amplifier shell 7
Radiator 13 is also provided with, the surface of radiator 13 is provided with some grooves 14, for increasing heat radiation area；Need what is illustrated
It is that radiator 13 be able to can also be separately provided, if radiator with the integrative-structure of power amplifier shell 7 (as shown in Figure 2)
13 are structure as a whole with power amplifier shell 7, then radiator 13 can see a part for power amplifier shell 7.
As shown in figure 3, arrow represents a kind of radiating signal of power amplifier of the utility model embodiment offer in figure
Figure.
A kind of power amplifier provided by the utility model is described in detail above, for the general of this area
Technical staff, according to the thought of the utility model embodiment, there will be changes in specific embodiments and applications,
To sum up, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
- A kind of 1. power amplifier, it is characterised in that including：Power amplifier shell, it is fixed on the power amplifier shell Aluminium base, heating power component, pcb board, non-heating power component on inner surface；The heating power component is fixed on by way of paster on the aluminium base；The non-heating power component is fixed on the pcb board；The pcb board is fixed on above the aluminium base；Circuit on the pcb board is electrically connected with the circuit on the aluminium base.
- 2. power amplifier according to claim 1, it is characterised in that also including conductive stud；Circuit on the pcb board is electrically connected with by the circuit on the conductive stud and the aluminium base.
- 3. power amplifier according to claim 2, it is characterised in that the conductive stud is copper stud.
- 4. power amplifier according to claim 2, it is characterised in that also including conductive screw；Positioning hole is provided with the pcb board and the aluminium base；The conductive stud is provided at both ends with screw hole；The conductive screw is connected through the positioning hole with the conductive stud.
- 5. according to the power amplifier described in claim 1, it is characterised in that be provided with radiating on the power amplifier shell Hole.
- 6. according to the power amplifier described in claim 5, it is characterised in that formed between the pcb board and the aluminium base logical Air channel；The heat emission hole is arranged on stating on power amplifier shell at the ventilating duct port.
- 7. according to the power amplifier described in claim 6, it is characterised in that the ventilation between the pcb board and the aluminium base Radiator fan is provided with road.
- 8. according to the power amplifier described in claim 7, it is characterised in that the radiator fan is arranged on the end of the ventilating duct Portion.
- 9. power amplifier according to claim 1, it is characterised in that the power amplifier shell and the aluminium base Connection side is provided with radiator.
- 10. power amplifier according to claim 9, it is characterised in that the spreader surface is provided with some grooves, For increasing heat radiation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721165538.3U CN207201208U (en) | 2017-09-12 | 2017-09-12 | A kind of power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721165538.3U CN207201208U (en) | 2017-09-12 | 2017-09-12 | A kind of power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207201208U true CN207201208U (en) | 2018-04-06 |
Family
ID=61788660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721165538.3U Active CN207201208U (en) | 2017-09-12 | 2017-09-12 | A kind of power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207201208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484394A (en) * | 2017-09-12 | 2017-12-15 | 广州市天歌音响设备有限公司 | A kind of power amplifier |
-
2017
- 2017-09-12 CN CN201721165538.3U patent/CN207201208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484394A (en) * | 2017-09-12 | 2017-12-15 | 广州市天歌音响设备有限公司 | A kind of power amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180928 Address after: 511442 No. 16, west line industrial zone, Keng Tau Village, Panyu District South Village, Guangzhou, Guangdong province (self declaration) Patentee after: Tiangong (Guangzhou) audio equipment Co., Ltd. Address before: 510000 Part 16 of West Line Industrial Zone, Keng Tau Village, Panyu District South Village, Guangzhou, Guangdong Patentee before: Guangzhou sky-art audio Co. Ltd. |
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| TR01 | Transfer of patent right |