Heat dissipation structure of power amplifier

Abstract

The utility model belongs to the field of heat dissipation devices, and particularly relates to a heat dissipation structure of a power amplifier, which comprises a mounting plate. A sliding groove is formed in the middle of the mounting plate; a plate frame is connected in the sliding groove in a sliding manner; a dustproof filter screen is fixedly connected in the plate frame; a wind scooper is fixedly connected to the side surface of the mounting plate; a fan is fixedly connected to one side, far away from the mounting plate, of the wind scooper; elastic sheets are fixedly connected to two sides of the bottom of the plate frame; by arranging the mounting plate, the plate frame and the filter screen, a fan is connected with the plate frame through a wind scooper during use, so that air sucked by the fan can be filtered through the dustproof filter screen, and the situation of surface dust accumulation of a transformer coil and a circuit board inside the power amplifier can be reduced; therefore, the influence of accumulated dust on the heat dissipation effect is reduced.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation devices, and specifically to a heat dissipation structure for a power amplifier. Background Technique

[0002] A power amplifier, also known as a power amplifier, is mainly used to amplify weak electrical signals to drive speakers to emit sound.

[0003] In the current existing technology, due to the high heat generation of the transformer coil and circuit board of the power amplifier, air intake holes are generally opened on the side of the power amplifier, and a fan is correspondingly installed. The fan is relied on to suck external air into the power amplifier to drive the internal air flow, thereby dissipating heat from the transformer coil and circuit board and reducing its temperature to ensure the stability of operation.

[0004] However, during use, after the fan blows cold external air into the housing of the power amplifier, the cold air is mixed with dust, and this dust will adhere to the circuit board and transformer coil of the power amplifier. After long-term use, the dust accumulation will affect the heat dissipation of the circuit board and transformer coil, resulting in a decline in the heat dissipation effect. Therefore, a heat dissipation structure for a power amplifier is proposed for the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology and solve at least one technical problem proposed in the background technique, the utility model proposes a heat dissipation structure for a power amplifier.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A heat dissipation structure for a power amplifier according to the utility model includes a mounting plate; a chute is opened in the middle of the mounting plate; a plate frame is slidably connected in the chute; a dust-proof filter screen is fixedly connected in the plate frame; a wind guide cover is fixedly connected to the side of the mounting plate; a fan is fixedly connected to the side of the wind guide cover away from the mounting plate; elastic pieces are fixedly connected to both sides of the bottom of the plate frame; card slots are opened on both sides of the bottom of the chute. During use, the fan is connected to the plate frame through the wind guide cover, so that the air sucked by the fan will be filtered by the dust-proof filter screen, thereby reducing the dust accumulation on the surface of the transformer coil and circuit board inside the power amplifier, and thus reducing the influence of dust accumulation on the heat dissipation effect.

[0007] Preferably, a connecting pipe is fixedly connected to the side of the fan away from the wind guide cover; a flexible air duct is fixedly connected to the top of the connecting pipe; a circular air outlet cylinder and a strip-shaped air outlet cylinder are fixedly connected to the flexible air duct. During use, the transformer coil of the power amplifier generates a large amount of heat, and the circular air duct blows directly at the transformer coil specifically. At the same time, the circular structural design can dissipate heat around the transformer coil in a circle, improving the heat dissipation uniformity and heat dissipation effect of the transformer coil.

[0008] Preferably, sliding seats are fixedly connected to both sides of the bottom of the mounting plate; a rod body is slidably connected to the middle of the sliding seat; a brush is fixedly connected to one side of the rod body close to the dust-proof filter; a dust guide plate is fixedly connected to the bottom of the plate frame.

[0009] Preferably, pulleys are rotatably connected to both sides of the bottom of the mounting plate; the surface of the pulley is in contact with the surface of the plate frame; a push wheel is fixedly connected to the side of the pulley; a protrusion is provided on the side of the push wheel; top rods are fixedly connected to both ends of the rod body. During use, the push wheels on both sides move alternately, thereby driving the brush to move back and forth, so as to improve the cleaning effect on the dust-proof filter.

[0010] Preferably, a dust-proof frame is fixedly connected to the mounting plate; a plurality of plate bodies are fixedly connected to the inner side wall of the dust-proof frame; the dust-proof filter is located on the side of the plate body close to the mounting plate.

[0011] Preferably, porous plates are fixedly connected to the bottoms of the strip-shaped air outlet cylinder and the circular air outlet cylinder.

[0012] Preferably, the plate body is inclined.

[0013] Preferably, sound-absorbing cotton is fixedly connected to the strip-shaped air outlet cylinder and the circular air outlet cylinder.

[0014] Preferably, a double-sided adhesive tape is bonded to the top side of the flexible air duct.

[0015] Preferably, the pulley is a rubber wheel.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By arranging the mounting plate, the plate frame and the filter screen, during use, the fan is connected to the plate frame through the air guide cover, so that the air inhaled by the fan will be filtered by the dust-proof filter, thereby reducing the dust accumulation on the surface of the transformer coil and the circuit board inside the power amplifier, and thus reducing the influence of dust accumulation on the heat dissipation effect.

[0018] 2. By arranging the connecting pipe, the flexible air duct, the circular air outlet cylinder and the strip-shaped air outlet cylinder, during use, the circular air outlet cylinder and the strip-shaped air outlet cylinder are installed on the inner top side of the power amplifier housing, the circular air outlet cylinder is aligned with the transformer coil, the strip-shaped air outlet cylinder faces the circuit board, the air flow blown out by the fan will be transported through the connecting pipe and the flexible air duct, and then ejected from the circular air outlet cylinder and the strip-shaped air outlet cylinder. The transformer coil of the power amplifier generates a large amount of heat. The circular air duct blows directly at the transformer coil specifically. At the same time, the circular structure design can dissipate heat around the transformer coil in a circle, improving the heat dissipation uniformity and heat dissipation effect of the transformer coil. The flexible air duct can be bent, and the staff can make corresponding adjustments according to the position of the transformer coil. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the flexible air duct of the present invention;

[0022] Figure 3 is a schematic structural diagram of the plate frame of the present invention;

[0023] Figure 4 is a schematic structural diagram of the dust guide plate of the present invention;

[0024] Figure 5 is a schematic structural diagram of the pulley of the present invention.

[0025] In the figure: 11, mounting plate; 12, air guide cover; 13, fan; 14, connecting pipe; 15, flexible air duct; 16, circular air outlet cylinder; 17, strip air outlet cylinder; 18, plate frame; 19, dust-proof filter screen; 191, elastic sheet; 21, sliding seat; 22, rod body; 23, brush; 3, dust guide plate; 41, pulley; 42, pushing wheel; 43, ejector rod; 51, dust-proof frame; 52, plate body; 61, double-sided adhesive strip; 62, sound-absorbing cotton; 63, perforated plate; 7, pull plate. Specific Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] The following gives specific embodiments.

[0028] Please refer to Figures 1-5As shown, a heat dissipation structure of a power amplifier includes a mounting plate 11; a slide groove is provided in the middle of the mounting plate 11; a plate frame 18 is slidably connected in the slide groove; a dust filter 19 is fixed in the plate frame 18; an air guide hood 12 is fixed to the side of the mounting plate 11; a fan 13 is fixed to the side of the air guide hood 12 away from the mounting plate 11; springs 191 are fixed to both sides of the bottom of the plate frame 18; card slots are provided on both sides of the bottom of the slide groove; during installation, the mounting plate 11 is fixed by screws. Installed on the outer shell on both sides of the power amplifier, after fixing, insert the plate frame 18 from the bottom of the slide slot. After full insertion, the spring piece 191 slides to the slot position and snaps into the slot to fix the dust filter 19. The fan 13 is connected to the plate frame 18 through the air guide cover 12, so that the air inhaled by the fan 13 will be filtered through the dust filter 19, thereby reducing the dust accumulation on the surface of the transformer coil and circuit board inside the power amplifier, thereby reducing the influence of dust accumulation on the heat dissipation effect.

[0029] Further, such as Figures 1-3 As shown, a connecting pipe 14 is fixedly connected to the side of the fan 13 away from the air guide cover 12; a flexible air duct 15 is fixedly connected to the top of the connecting pipe 14; a circular air outlet 16 and a strip air outlet 17 are fixedly connected to the flexible air duct 15; when in use, the circular air outlet 16 and the strip air outlet 17 are installed on the inner top side of the power amplifier housing, the circular air outlet 16 is aligned with the transformer coil, and the strip air outlet 17 faces the circuit board. The air flow blown out of the fan 13 will be transported through the connecting pipe 14 and the flexible air duct 15, and then ejected from the circular air outlet 16 and the strip air outlet 17. The transformer coil of the power amplifier generates a large amount of heat, and the circular air duct blows directly to the transformer coil in a targeted manner. At the same time, the circular structural design can dissipate heat for the transformer coil around a circle, thereby improving the heat dissipation uniformity and heat dissipation effect of the transformer coil. The flexible air duct 15 can be bent, and the staff can make corresponding adjustments according to the position of the transformer coil.

[0030] Further, such as Figure 5 As shown, both sides of the bottom of the mounting plate 11 are fixedly connected with a slide seat 21; the middle part of the slide seat 21 is slidably connected with a rod body 22; the side of the rod body 22 close to the dust filter 19 is fixedly connected with a brush 23; the bottom of the plate frame 18 is fixedly connected with a dust guide plate 3; during long-term use, the staff can pull the plate frame 18, thereby driving the plate frame 18 to move up and down. During the movement, the dust filter 19 is cleaned by the brush 23, so that the dust filter 19 can be dredged, and the dust guide plate 3 is used to receive and guide the dust to fall, and at the same time, the catkins adhering to the dust filter 19 are scraped off.

[0031] Further, such as Figure 5As shown, pulleys 41 are rotatably connected to both sides of the bottom of the mounting plate 11; the surface of the pulley 41 is in contact with the surface of the plate frame 18; a push wheel 42 is fixedly connected to the side of the pulley 41; a protrusion is provided on the side of the push wheel 42; top rods 43 are fixedly connected to both ends of the rod body 22; during use, in order to stagger the push wheels 42 at both ends, when pulling the plate frame 18, the plate frame 18 drives the pulley 41 to rotate by relying on friction, the pulley 41 drives the push wheel 42 to rotate, and the protrusion on the push wheel 42 pushes the top rod 43, causing the rod body 22 to move. As the pulley 41 continues to rotate, the push wheel 42 on the other side pushes the rod body 22 to move back to its original position. By relying on the staggered movement of the push wheels 42 on both sides, the brush 23 is driven to move back and forth, thereby improving the cleaning effect on the dust filter 19.

[0032] Further, as Figures 1-2 shown, a dust-proof frame 51 is fixedly connected to the mounting plate 11; a plurality of plate bodies 52 are fixedly connected to the inner side wall of the dust-proof frame 51; the plate bodies 52 are inclined; the dust filter 19 is located on the side of the plate body close to the mounting plate 11; during use, relying on the dust-proof frame 51 and the plate bodies 52, the dust from the outside can be blocked, thereby reducing the situation where dust in the air naturally falls onto the dust filter 19 during placement, and the air flow enters through the gap between the two plate bodies 52.

[0033] Further, as Figure 3 shown, porous plates 63 are fixedly connected to the bottoms of the strip-shaped air outlet tube 17 and the circular air outlet tube 16; a double-sided adhesive strip 61 is bonded to the top side of the flexible air duct 15; sound-absorbing cotton 62 is fixedly connected to both the strip-shaped air outlet tube 17 and the circular air outlet tube 16; during use, relying on the porous plate 63 can improve the uniformity of air outlet at the bottoms of the air outlet tubes and the circular air outlet tube 16. By relying on the setting of the double-sided adhesive strip 61, it is used to bond and fix the flexible air duct 15 to reduce its movement during use. After the strip-shaped air outlet tube 17 and the circular air outlet tube 16 are installed and fixed, by relying on the setting of the sound-absorbing cotton 62 for wrapping, when the air flow enters the strip-shaped air outlet tube 17 and the circular air outlet tube 16, slight noise will be generated, and the sound-absorbing cotton 62 can play a certain role in sound absorption and noise reduction.

[0034] Further, the pulley 41 is a rubber wheel, and this setting increases the friction force to facilitate the rotation of the pulley 41.

[0035] Further, as Figure 1 shown, a pull plate 7 is fixedly connected to the bottom of the plate frame 18; during use, by relying on the setting of the pull plate 7, it is convenient for the staff to pull the plate frame 18, thereby facilitating the cleaning of the dust filter 19.

[0036] Working principle: during installation, the mounting plate 11 is installed on the outer casing on both sides of the power amplifier by screws. After the fixing is completed, the plate frame 18 is inserted from the bottom of the slide slot. After the insertion is complete, the spring piece 191 slides to the slot position and is snapped into the slot to fix the dust filter 19. The fan 13 is connected to the plate frame 18 through the air guide cover 12, so that the air inhaled by the fan 13 will be filtered through the dust filter 19, so as to reduce the dust accumulation on the surface of the transformer coil and circuit board inside the power amplifier, thereby reducing the influence of dust accumulation on the heat dissipation effect. When in use, the circular air outlet 16 and the strip air outlet 17 are installed on the inner top side of the power amplifier housing, and the circular air outlet 16 is in contact with the transformer coil. The strip air outlet 17 faces the circuit board, and the air flow blown out from the fan 13 will be transported through the connecting tube 14 and the flexible air duct 15, and then ejected from the circular air outlet 16 and the strip air outlet 17. The transformer coil of the power amplifier generates a large amount of heat, and the circular air duct blows directly to the transformer coil in a targeted manner. At the same time, the circular structural design can dissipate heat for the transformer coil around a circle, thereby improving the heat dissipation uniformity and heat dissipation effect of the transformer coil. The flexible air duct 15 can be bent, and the staff can make corresponding adjustments according to the position of the transformer coil. During long-term use, the staff can pull the plate frame 18 to drive the plate frame 18 to move up and down. During the movement, the dust filter is cleaned by the brush 23 The net 19 is cleaned, so that the dust filter 19 can be dredged, the dust guide plate 3 is used to receive and guide the dust to fall, and at the same time, the catkins adhered to the dust filter 19 are scraped off, and the pushing wheels 42 at both ends are staggered. When the plate frame 18 is pulled, the plate frame 18 relies on friction to drive the pulley 41 to rotate, and the pulley 41 drives the pushing wheel 42 to rotate, and the protrusion on it pushes the push rod 43 to move, so that the rod body 22 moves. As the pulley 41 continues to rotate, the pushing wheel 42 on the other side pushes the rod body 22 to move and reset, and relies on the staggered movement of the pushing wheels 42 on both sides, thereby driving the brush 23 to move back and forth, so as to improve the cleaning effect of the dust filter 19. The dustproof frame 51 and the plate body 52 can block the external dust, thereby reducing the situation where the dust in the air naturally falls on the dustproof filter 19 when placed. The airflow enters from the gap between the two plate bodies 52, and the porous plate 63 can improve the uniformity of the air outlet at the bottom of the air outlet pipe and the circular air outlet pipe 16. The double-sided adhesive strip 61 is set to bond and fix the flexible air duct 15 to reduce its movement during use. After the strip air outlet pipe 17 and the circular air outlet pipe 16 are installed and fixed, they are wrapped with sound-absorbing cotton 62. The airflow enters the strip air outlet pipe 17 and the circular air outlet pipe 16, which will generate slight noise. The sound-absorbing cotton 62 can play a certain role in sound absorption and noise reduction.

[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A heat dissipation structure for a power amplifier, comprising a mounting plate (11); a slide groove is provided in the middle of the mounting plate (11); and the characteristics are: A plate frame (18) is slidably connected in the slide groove; a dust filter (19) is fixedly connected in the plate frame (18); an air guide cover (12) is fixedly connected to the side of the mounting plate (11); a fan (13) is fixedly connected to the side of the air guide cover (12) away from the mounting plate (11); spring pieces (191) are fixedly connected to both sides of the bottom of the plate frame (18); and card slots are provided on both sides of the bottom of the slide groove.

2. The heat dissipation structure of a power amplifier according to claim 1, characterized in that: A connecting pipe (14) is fixedly connected to one side of the fan (13) away from the air guide cover (12); a flexible air duct (15) is fixedly connected to the top of the connecting pipe (14); and a circular air outlet tube (16) and a strip air outlet tube (17) are fixedly connected to the flexible air duct (15).

3. The heat dissipation structure of a power amplifier according to claim 2, characterized in that: A dustproof frame (51) is fixedly connected to the mounting plate (11); a plurality of plate bodies (52) are fixedly connected to the inner side wall of the dustproof frame (51); and the dustproof filter (19) is located on a side of the plate body (52) close to the mounting plate (11).

4. The heat dissipation structure of a power amplifier according to claim 3, characterized in that: The bottoms of the strip-shaped air outlet cylinder (17) and the circular air outlet cylinder (16) are both fixedly connected with a porous plate (63).

5. The heat dissipation structure of a power amplifier according to claim 3, characterized in that: The plate body (52) is arranged in an inclined manner.

6. The heat dissipation structure of a power amplifier according to claim 4, characterized in that: The strip-shaped air outlet tube (17) and the circular air outlet tube (16) are both fixedly connected with sound-absorbing cotton (62).

7. The heat dissipation structure of a power amplifier according to claim 4, characterized in that: A double-sided adhesive strip (61) is bonded to the top side of the flexible air duct (15).

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