Power amplifier unit and power amplifier

Abstract

The utility model discloses a power amplifier unit and a power amplifier possessing the same, the power amplifier unit comprises a power amplifier assembly, the power amplifier assembly comprises a radiator and a power amplifier part, the power amplifier part comprises a power amplifier circuit board and a plurality of power amplifier tubes arranged on the power amplifier circuit board, and the power amplifier tubes are attached to the surface of the radiator; the capacitor component comprises a capacitor circuit board and a plurality of first capacitors arranged on the capacitor circuit board; a first fan is arranged at the front end of the radiator, the transverse size of the power amplifier assembly is larger than that of the first fan, and the capacitor components are arranged in front of the first fan at intervals. When the power amplifier is assembled, the first fan can be arranged on the left side or the right side of the position with the largest transverse size of the transformer, and the power amplifier assembly can be arranged on the left side or the right side of the position with the smaller transverse size of the transformer, so that the transformer is closer to the power amplifier unit, and the miniaturization of the power amplifier is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of audio equipment, in particular to a power amplifier unit and a power amplifier. Background Art

[0002] A power amplifier specifically refers to one of the most basic devices in the audio system, commonly known as a "loudspeaker". Its task is to amplify the weak electrical signal from the signal source to drive the speaker to produce sound. A power amplifier can be provided with a single channel, a dual channel, a triple channel or more channels, and each channel requires a corresponding power amplifier unit. A power amplifier generally includes a chassis, a transformer arranged in the chassis, and several power amplifier units; the existing power amplifier units have unreasonable structural designs and require a large space, which is not only not conducive to the miniaturization of the power amplifier, but also easily causes problems such as long transmission lines and large transmission losses. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a power amplifier unit and a power amplifier.

[0004] According to the first aspect of the present invention, the power amplifier unit includes:

[0005] A power amplifier assembly includes a heat sink and a power amplifier component, wherein the power amplifier component includes a power amplifier circuit board and a plurality of power amplifier tubes disposed on the power amplifier circuit board, and the power amplifier tubes are bonded to the surface of the heat sink;

[0006] A capacitor component, comprising a capacitor circuit board and a plurality of first capacitors arranged on the capacitor circuit board;

[0007] A first fan is disposed at the front end of the radiator, the transverse dimensions of the power amplifier components are larger than the transverse dimensions of the first fan, and the capacitor components are spaced in front of the first fan.

[0008] The power amplifier unit according to the embodiment of the first aspect of the utility model has at least the following technical effects: when assembling the power amplifier, the first fan can be arranged on the left or right side of the transformer where the lateral dimension is the largest, and the power amplifier component can be arranged on the left or right side of the transformer where the lateral dimension is smaller, which is beneficial to bring the transformer and the power amplifier unit closer together and to miniaturize the power amplifier.

[0009] According to some embodiments of the present invention, the power amplifier circuit board is arranged vertically, and the power amplifier circuit board is arranged on the left side or the right side of the radiator.

[0010] According to some embodiments of the present invention, some of the power amplifier tubes are attached to the top surface of the radiator, and some of the power amplifier tubes are attached to the bottom surface of the radiator.

[0011] According to some embodiments of the utility model, the power amplifier assembly includes two power amplifier components, and the heat sink is arranged between the two power amplifier components; the number of the capacitor components is two, and the two power amplifier components correspond to the two capacitor components one by one.

[0012] According to some embodiments of the present invention, the capacitor circuit boards of the two capacitor components are an integral component.

[0013] According to some embodiments of the present invention, the capacitor component further includes a baffle, and the baffle is disposed on the front side of the plurality of first capacitors.

[0014] According to some embodiments of the present invention, a second fan is provided at the rear end of the radiator.

[0015] According to the second aspect of the present invention, the power amplifier comprises a chassis, in which a transformer and the power amplifier unit are arranged, the transformer is in the shape of a vertically arranged cylinder, the power amplifier unit is arranged on the left or right side of the transformer, and the front and rear positions of the axis of the transformer are located between the power amplifier component and the capacitor component.

[0016] The power amplifier according to the embodiment of the second aspect of the utility model has at least the following technical effects: by providing the above-mentioned power amplifier unit, it is beneficial to bring the transformer and the power amplifier unit closer together, which is beneficial to the miniaturization of the power amplifier.

[0017] According to some embodiments of the present invention, there are two power amplifier units, and the transformer is disposed between the two power amplifier units.

[0018] According to some embodiments of the utility model, the radiator, the first fan and the power amplifier component are collectively referred to as a first component, the power amplifier also includes a second component, the second component has the same structure as the first component, and the power amplifier circuit board of the second component is provided with multiple second capacitors; the transformer is arranged between the power amplifier unit and the second component.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of a power amplifier unit according to an embodiment of the utility model;

[0022] Figure 2It is a structural schematic diagram of a power amplifier according to an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a power amplifier according to an embodiment of the utility model.

[0024] Attached photos

[0025] 100 - radiator; 110 - amplifier circuit board; 111 - amplifier tube; 121 - first fan; 122 - second fan; 200 - capacitor circuit board; 210 - first capacitor; 220 - baffle; 230 - wiring space; 300 - chassis; 301 - air inlet; 310 - transformer; 400 - second component; 410 - second capacitor. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present utility model, it should be understood that the directions or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the meaning of several is one or more, the meaning of more than two is more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, not all embodiments.

[0030] It is understandable that in the prior art, a power amplifier is generally provided with a transformer 310 and two power amplifier units, the transformer 310 and the two power amplifier units are both arranged in the chassis 300 of the power amplifier, the heat sinks 100 of the two power amplifier units are arranged on the left and right sides of the transformer 310, and the capacitors of the two power amplifier units are arranged on the rear side of the transformer 310; however, the transformer 310 is cylindrical, which results in four irregular spaces being left on the left front side, the right front side, the left rear side, and the right rear side of the transformer 310, resulting in low space utilization and being unfavorable to the miniaturization of the power amplifier. The power amplifier unit and the power amplifier of the utility model are conducive to improving space utilization.

[0031] Reference below Figures 1 to 3 A power amplifier unit and a power amplifier according to an embodiment of the utility model are described.

[0032] The power amplifier unit of the first embodiment of the utility model includes a power amplifier component and a capacitor compensation component; the power amplifier component includes a heat sink 100 and a power amplifier component, the power amplifier component includes a power amplifier circuit board 110 and a plurality of power amplifier tubes 111 arranged on the power amplifier circuit board 110, and the power amplifier tubes 111 are bonded to the surface of the heat sink 100; the capacitor component includes a capacitor circuit board 200 and a plurality of first capacitors 210 arranged on the capacitor circuit board 200; a first fan 121 is provided at the front end of the heat sink 100, the lateral dimensions of the power amplifier component are all larger than the lateral dimensions of the first fan 121, and the capacitor component is arranged in front of the first fan 121 at intervals.

[0033] For example, Figure 1As shown, the capacitor component, the first fan 121 and the power amplifier component are arranged in sequence from front to back; the first fan 121 can be an axial flow fan, and the air supply direction of the first fan 121 is toward the rear. A first gap is provided between the capacitor component and the first fan 121, so that air can enter the first fan 121 from the first gap, and then be sent to the radiator 100 by the first fan 121, avoiding the problem that the capacitor component blocks the air intake of the first fan 121; the radiator 100 can be an aluminum alloy material component, so that the weight is small and the heat dissipation effect is better; a heat dissipation air duct extending front and back is provided in the radiator 100, and the heat dissipation air duct runs through the radiator 100 in the front and back direction, so that the wind sent by the first fan 121 can pass through the inside of the radiator 100 from front to back, and then dissipate the heat of the radiator 100; the radiator 100 has a plurality of heat sinks, and the plurality of heat sinks are all arranged in the heat dissipation air duct to further improve the heat dissipation effect of the radiator 100. The power amplifier tube 111 is attached to the surface of the radiator 100. The power amplifier tube 111 and the radiator 100 can be fixed by bolts to make the attachment between the power amplifier tube 111 and the surface of the radiator 100 more compact. Thermal conductive silicone grease can be provided between the power amplifier tube 111 and the surface of the radiator 100 to improve the efficiency of heat transfer between the power amplifier tube 111 and the surface of the radiator 100. The capacitor circuit board 200 of the capacitor component is arranged horizontally, and the plurality of first capacitors 210 are all arranged on the upper side of the capacitor circuit board 200.

[0034] It can be understood that the projection of the first fan 121 at the radiator 100 can cover the front end of the radiator 100, so as to achieve a better heat dissipation effect. On this basis, further increasing the lateral size of the first fan 121 has little effect on improving the heat dissipation effect. Therefore, the lateral size of the first fan 121 only needs to be set to be slightly larger than the lateral size of the radiator 100; and the power amplifier circuit board 110 of the power amplifier component, in addition to the power amplifier tube 111 on the side facing the radiator 100, is also provided with other electronic components on the side facing away from the radiator 100. Therefore, the overall lateral size of the power amplifier assembly will be larger than the lateral size of the first fan 121.

[0035] The power amplifier unit of the present invention fully utilizes the structural feature that the lateral dimension of the power amplifier component is larger than the lateral dimension of the first fan 121, and arranges the first fan 121 between the capacitor component and the power amplifier component, so that when assembling the power amplifier, the first fan 121 and the first gap can be arranged on the left or right side of the part where the lateral dimension of the transformer 310 is the largest, and the power amplifier component can be arranged on the left or right side of the part where the lateral dimension of the transformer 310 is smaller, which is beneficial to bring the transformer 310 and the power amplifier unit closer together and is beneficial to the miniaturization of the power amplifier.

[0036] In some embodiments of the present invention, the power amplifier circuit board 110 is arranged vertically, and the power amplifier circuit board 110 is arranged on the left or right side of the heat sink 100. In this way, the power amplifier circuit board 110 is stacked on the heat sink 100, and the structure is compact.

[0037] In some embodiments of the utility model, part of the power amplifier tube 111 is attached to the top surface of the radiator 100, and part of the power amplifier tube 111 is attached to the bottom surface of the radiator 100. Part of the power amplifier tube 111 is arranged on the upper edge of the power amplifier circuit board 110, protrudes from the power amplifier circuit board 110 to one side of the radiator 100, and is attached to the top surface of the radiator 100, and part of the power amplifier tube 111 is arranged on the lower edge of the power amplifier circuit board 110, protrudes from the power amplifier circuit board 110 to one side of the radiator 100, and is attached to the bottom surface of the radiator 100, so that the structure is compact.

[0038] In some embodiments of the utility model, the power amplifier assembly includes two power amplifier components, and the heat sink 100 is arranged between the two power amplifier components; the number of capacitor components is two, and the two power amplifier components correspond to the two capacitor components one by one. Such a power amplifier unit can be provided with two channels, and only one heat sink 100 and the first fan 121 are required, which is conducive to making the structure more compact.

[0039] In some embodiments of the utility model, the capacitor circuit board 200 of the two capacitor components is an integral component. There is no need to set a gap between the two capacitor components, which is conducive to making the structure more compact; each capacitor component includes four first capacitors 210, and the two capacitor components have a total of eight first capacitors 210, and the eight first capacitors 210 are arranged in three rows, which are called the first row, the second row, and the third row from front to back. The first row is provided with three first capacitors 210, the second row is provided with three first capacitors 210, and the third row is provided with two first capacitors 210. Then the third row is left with a wiring space 230 on the left and right sides of the two first capacitors 210 to set two wiring terminals, and the two wiring terminals are used to set the wires to be connected to the two power amplifier circuit boards 110 one by one. It can be understood that the overall lateral size of the two capacitor components will be larger than the lateral size of the first fan 121. By setting the capacitor component on the front side of the first fan 121, the capacitor component is correspondingly set on the side of the smaller lateral size of the transformer 310 during assembly, making full use of the space, which is conducive to making the structure more compact.

[0040] In some embodiments of the present invention, the capacitor component further includes a baffle 220, which is disposed on the front side of the plurality of first capacitors 210. The baffle 220 can protect the plurality of first capacitors 210. The baffle 220 has a bending portion on both the left and right sides, and the bending portion is disposed on the left and right sides of the plurality of first capacitors 210.

[0041] In some embodiments of the present invention, a second fan 122 is disposed at the rear end of the heat sink 100. The second fan 122 is disposed at the rear end of the heat dissipation air duct, and the second fan 122 may be an axial flow fan to further improve the heat dissipation effect.

[0042] The power amplifier of the second embodiment of the utility model comprises a chassis 300, wherein a transformer 310 and the above-mentioned power amplifier unit are arranged in the chassis 300, the transformer 310 is in a vertically arranged cylindrical shape, the power amplifier unit is arranged on the left or right side of the transformer 310, and the front and rear positions of the axis of the transformer 310 are located between the power amplifier assembly and the capacitor component. By arranging the above-mentioned power amplifier unit, it is beneficial to make the transformer 310 and the power amplifier unit closer, which is beneficial to the miniaturization of the power amplifier. Among them, the chassis 300 has a front wall, a rear wall and two side walls, the power amplifier unit is arranged between the transformer 310 and one of the side walls, the front wall corresponds to the front of the power amplifier unit and the side wall corresponds to the capacitor component. The side wall corresponds to the side of the capacitor component and the rear wall corresponds to the rear of the power amplifier unit. The exhaust port is arranged to facilitate air intake and exhaust; the setting of the baffle 220 can prevent small particles from being sucked into the exhaust port and colliding with the first capacitor 210, thereby achieving the purpose of protecting the first capacitor 210.

[0043] In some embodiments of the present invention, the number of power amplifier units is two, and the transformer 310 is disposed between the two power amplifier units. Figure 2 As shown, both power amplifier units may include two power amplifier components and two capacitor components, so that each power amplifier unit can form dual channels. The power amplifier of this embodiment has four channels, which is conducive to making the structure more compact.

[0044] In some embodiments of the present invention, the heat sink 100, the first fan 121 and a power amplifier component are collectively referred to as a first component, and the power amplifier also includes a second component 400. The second component 400 has the same structure as the first component, and the power amplifier circuit board 110 of the second component 400 is provided with a plurality of second capacitors 410; the transformer 310 is provided between the power amplifier unit and the second component 400. In this embodiment, Figure 3 As shown, the power amplifier unit may include two power amplifier components and two capacitor components to form a dual-channel, and the first component is combined to form a single channel, so that the power amplifier of this embodiment has three channels. When the second component 400 only needs to form a single channel, there is no need to additionally set the capacitor circuit board 200, and the second capacitor 410 can be directly set on its power amplifier circuit board 110 to simplify the structure and reduce costs.

[0045] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A power amplifier unit, characterized in that: include: A power amplifier assembly comprises a heat sink (100) and a power amplifier component, wherein the power amplifier component comprises a power amplifier circuit board (110) and a plurality of power amplifier tubes (111) arranged on the power amplifier circuit board (110), and the power amplifier tubes (111) are bonded to a surface of the heat sink (100); A capacitor component, comprising a capacitor circuit board (200) and a plurality of first capacitors (210) arranged on the capacitor circuit board (200); A first fan (121) is provided at the front end of the radiator (100), the transverse dimensions of the power amplifier components are greater than the transverse dimensions of the first fan (121), and the capacitor components are arranged in front of the first fan (121) at intervals.

2. The power amplifier unit according to claim 1, characterized in that: The power amplifier circuit board (110) is arranged vertically, and the power amplifier circuit board (110) is arranged on the left side or the right side of the radiator (100).

3. The power amplifier unit according to claim 2, characterized in that: Part of the power amplifier tubes (111) is attached to the top surface of the radiator (100), and part of the power amplifier tubes (111) is attached to the bottom surface of the radiator (100).

4. The power amplifier unit according to claim 2, characterized in that: The power amplifier assembly comprises two power amplifier components, and the heat sink (100) is arranged between the two power amplifier components; the number of the capacitor components is two, and the two power amplifier components correspond to the two capacitor components one by one.

5. The power amplifier unit according to claim 4, characterized in that: The capacitor circuit boards (200) of the two capacitor components are an integral component.

6. The power amplifier unit according to claim 1, characterized in that: The capacitor component further comprises a baffle (220), wherein the baffle (220) is arranged on the front side of the plurality of first capacitors (210).

7. The power amplifier unit according to claim 1, characterized in that: A second fan (122) is provided at the rear end of the radiator (100).

8. A power amplifier, characterized in that: The invention comprises a chassis (300), wherein a transformer (310) and a power amplifier unit according to any one of claims 1 to 7 are arranged in the chassis (300), wherein the transformer (310) is in the shape of a vertically arranged cylinder, the power amplifier unit is arranged on the left side or the right side of the transformer (310), and the front-rear position of the axis of the transformer (310) is located between the power amplifier component and the capacitor component.

9. The power amplifier according to claim 8, characterized in that: The number of the power amplifier units is two, and the transformer (310) is arranged between the two power amplifier units.

10. The power amplifier according to claim 8, characterized in that: The heat sink (100), the first fan (121) and one of the power amplifier components are collectively referred to as a first component. The power amplifier also includes a second component (400). The second component (400) has the same structure as the first component. The power amplifier circuit board (110) of the second component (400) is provided with a plurality of second capacitors (410). The transformer (310) is provided between the power amplifier unit and the second component (400).

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