CN215818489U

CN215818489U - Audio amplifier with noise elimination structure

Info

Publication number: CN215818489U
Application number: CN202122158581.XU
Authority: CN
Inventors: 肖平
Original assignee: Ceiec Ether Electronics Co ltd
Current assignee: Ceiec Ether Electronics Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-11
Anticipated expiration: 2031-09-08

Abstract

The utility model relates to the technical field of audio amplifiers, and discloses an audio amplifier with a noise elimination structure, which comprises an audio amplifier body and a noise reduction box, wherein the upper end of the noise reduction box is provided with a heat radiation port, one side of the lower end of the noise reduction box is provided with a ventilation cavity, one side of the ventilation cavity is provided with sound absorption cotton A, the upper end of the noise reduction box is provided with a cavity, one side of the cavity is provided with ventilation fins, the sound absorption cotton B is arranged in the cavity and the ventilation fins, when the audio amplifier body generates noise during operation, the sound absorption cotton A is attached to the upper end of a machine box for sound insulation, the heat generated in the sound absorption cotton is discharged from the ventilation cavity and conducted outwards through the ventilation fins, the sound absorption cotton B is also arranged in the cavity and the ventilation fins, the sound absorption cotton B absorbs the noise in the ventilation fins, the ventilation fins can increase the area of the sound absorption cotton B, so that the noise elimination function is better, the noise generated when the internal elements of the case run can be effectively eliminated.

Description

Audio amplifier with noise elimination structure

Technical Field

The utility model relates to the technical field of audio amplifiers, in particular to an audio amplifier with a noise elimination structure.

Background

Audio amplifiers are one of the important components of multimedia products and are widely used in the field of consumer electronics. The linear audio power amplifier has a dominant market in the traditional audio amplifier due to small distortion and good sound quality. In recent years, with the popularization of portable multimedia devices such as MP3, PDA, mobile phone, and notebook computer, the efficiency and volume of linear power amplifiers have not been able to meet the market demand, and class D power amplifiers are becoming more and more popular because of their advantages such as high efficiency and small volume.

When the audio amplifier uses, the internal component operation can produce the noise, leads to experiencing when using the audio amplifier to feel relatively poor, and if inside places the fan and assists the heat dissipation, then gets into the dust from the air outlet easily, uses inconveniently.

The problems described above are addressed. To this end, an audio amplifier with a noise cancellation structure is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an audio amplifier with a noise elimination structure, when an audio amplifier body is used, elements inside a case operate, if noise is generated during operation, sound absorption cotton A is attached to the upper end of the case for sound insulation, heat generated inside is exhausted from a ventilation cavity and conducted outwards through a cavity and ventilation fins, and meanwhile, sound absorption cotton B is arranged inside the cavity and the ventilation fins, when the noise is transmitted outwards from the inner side, the sound absorption cotton B inside the ventilation fins absorbs the noise, the ventilation fins can increase the area of the sound absorption cotton B, the noise elimination function is better, and the noise generated during operation of the elements inside the case can be effectively eliminated, so that the problems in the background technology are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: an audio amplifier with a noise elimination structure comprises an audio amplifier body and a noise reduction box, wherein the noise reduction box is movably arranged at the upper end of the audio amplifier body, the upper end of the noise reduction box is provided with a heat dissipation port, one side of the lower end of the noise reduction box is provided with a ventilation cavity, and one side of the ventilation cavity is provided with sound absorption cotton A;

the upper end of the noise reduction box is provided with a cavity, one side of the cavity is provided with ventilation fins, and sound absorption cotton B is arranged in the cavity and the ventilation fins.

Preferably, one side of the audio amplifier body is provided with an adjusting button, one side of the audio amplifier body is provided with a case, and one side of the case is provided with a connecting port.

Preferably, the connecting port and the ventilation cavity are matched in position.

Preferably, the two sides of the case are provided with mounting sliding grooves, the two sides of the inner cavity of the noise reduction box are provided with mounting sliding blocks, the mounting sliding grooves are matched with the mounting sliding blocks, and one ends of the mounting sliding grooves are fixed through bolts.

Preferably, one side of the ventilation cavity is connected with the through groove and is arranged on one side of the cavity.

Preferably, an exhaust fan is arranged in the ventilation cavity and exhausts air to one side of the through groove.

Preferably, a rotating plate is arranged in the through groove, and the upper end of the rotating plate is arranged in the through groove through a movable shaft.

Compared with the prior art, the utility model has the following beneficial effects:

1. when the audio amplifier body is used, elements inside a case operate, if noise is generated during operation, sound absorption cotton A is attached to the upper end of the case for sound insulation, heat generated inside is discharged from a ventilation cavity and conducted outwards through a cavity and ventilation fins, meanwhile, sound absorption cotton B is also arranged inside the cavity and the ventilation fins, when the noise is transmitted outwards from the inner side, the sound absorption cotton B inside the ventilation fins absorbs the noise, the ventilation fins can increase the area of the sound absorption cotton B, the noise elimination function is better, and the noise generated during operation of the elements inside the case can be effectively eliminated.

2. According to the audio amplifier with the noise elimination structure, when the audio amplifier body runs, the exhaust fan operates, the exhaust fan exhausts air outwards, the rotating plate is blown up to ventilate, when the exhaust fan stops working, the rotating plate rotates under the action of gravity, the through groove is sealed, dust is prevented from entering when the device is not used, and the cleanness of the interior of a case is guaranteed.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of an audio amplifier according to the present invention;

FIG. 3 is a schematic view of the noise reduction box of the present invention;

FIG. 4 is a schematic view of the internal structure of the noise reduction box of the present invention;

fig. 5 is a schematic view of the structure of the ventilation chamber of the present invention.

In the figure: 1. an audio amplifier body; 11. an adjusting knob; 12. a chassis; 13. a connecting port; 14. installing a chute; 2. a noise reduction box; 21. a heat dissipation port; 22. a ventilation cavity; 221. an exhaust fan; 222. a rotating plate; 223. a movable shaft; 23. sound-absorbing cotton A; 24. installing a sliding block; 25. a cavity; 26. a ventilation fin; 27. a through groove; 28. and sound absorption cotton B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 3, an audio amplifier with a noise cancellation structure includes an audio amplifier body 1 and a noise reduction box 2, the noise reduction box 2 is movably mounted at an upper end of the audio amplifier body 1, a heat dissipation opening 21 is formed at an upper end of the noise reduction box 2, a ventilation cavity 22 is formed at one side of a lower end of the noise reduction box 2, and sound absorption cotton a23 is arranged at one side of the ventilation cavity 22.

Referring to fig. 4, a cavity 25 is disposed at the upper end of the noise reduction box 2, a ventilation fin 26 is disposed at one side of the cavity 25, and sound absorption cotton B28 is disposed inside both the cavity 25 and the ventilation fin 26.

Referring to fig. 2, an adjusting button 11 is disposed on one side of an audio amplifier body 1, a case 12 is disposed on one side of the audio amplifier body 1, a connecting port 13 is disposed on one side of the case 12, the connecting port 13 is matched with a ventilation cavity 22 in position, mounting sliding grooves 14 are disposed on two sides of the case 12, mounting sliding blocks 24 are disposed on two sides of an inner cavity of the noise reduction box 2, the mounting sliding grooves 14 are matched with the mounting sliding blocks 24, and one ends of the mounting sliding grooves 14 are fixed by bolts.

When audio amplifier body 1 uses, the inside component of machine case 12 operates, if produce the noise when operating, inhale cotton A23 and paste and give sound insulation in machine case 12 upper end, the heat of inside production is discharged by ventilation cavity 22, outwards conduct through cavity 25 and ventilation fin 26, cavity 25 and ventilation fin 26's inside also is provided with inhales cotton B28 of sound simultaneously, when the noise is outwards transmitted by the inboard, the inside cotton B28 of inhaling of ventilation fin 26 absorbs the noise, ventilation fin 26 can increase the area of inhaling cotton B28, make the noise elimination function better, can effectually eliminate the noise that produces when operating the inside component of machine case 12.

Referring to fig. 4 and 5, one side of the ventilation cavity 22 is connected to the through groove 27 and is disposed at one side of the cavity 25, the ventilation cavity 22 is internally provided with an exhaust fan 221 and exhausts air to one side of the through groove 27, the through groove 27 is internally provided with a rotation plate 222, and an upper end of the rotation plate 222 is mounted inside the through groove 27 through a movable shaft 223.

When the audio amplifier body 1 is in operation, the exhaust fan 221 operates, the exhaust fan 221 exhausts air outwards to perform heat dissipation operation on the inside of the case 12, and simultaneously blows up the rotating plate 222 to perform ventilation, when the exhaust fan 221 stops working, the rotating plate 222 rotates under the action of gravity to seal the through groove 27, so that dust is prevented from entering when the device is not used, and the inside of the case 12 is ensured to be clean.

The working principle is as follows: when the audio amplifier body 1 is used, the elements inside the cabinet 12 operate, if noise is generated during operation, the sound absorption cotton a23 is attached to the upper end of the cabinet 12 for sound insulation, the heat generated inside is exhausted from the ventilation cavity 22 and conducted outwards through the cavity 25 and the ventilation fins 26, meanwhile, the sound absorption cotton B28 is also arranged inside the cavity 25 and the ventilation fins 26, when the noise is transmitted outwards from the inside, the sound absorption cotton B28 inside the ventilation fins 26 absorbs the noise, the ventilation fins 26 can increase the area of the sound absorption cotton B28, when the audio amplifier body 1 operates, the exhaust fan 221 exhausts outwards, the rotating plate 222 is blown up for ventilation, and when the exhaust fan 221 stops operating, the rotating plate 222 rotates under the action of gravity to seal the through groove 27.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an audio amplifier with noise elimination structure, includes audio amplifier body (1) and noise reduction box (2), noise reduction box (2) movable mounting is in the upper end of audio amplifier body (1), its characterized in that: the upper end of the noise reduction box (2) is provided with a heat dissipation port (21), one side of the lower end of the noise reduction box (2) is provided with a ventilation cavity (22), and one side of the ventilation cavity (22) is provided with sound absorption cotton A (23);

the upper end of the noise reduction box (2) is provided with a cavity (25), one side of the cavity (25) is provided with a ventilation fin (26), and sound absorption cotton B (28) is arranged inside the cavity (25) and the ventilation fin (26).

2. An audio amplifier with a noise cancellation structure according to claim 1, wherein: one side of the audio amplifier body (1) is provided with an adjusting button (11), one side of the audio amplifier body (1) is provided with a case (12), and one side of the case (12) is provided with a connecting port (13).

3. An audio amplifier with a noise cancellation structure according to claim 2, wherein: the connecting port (13) is matched with the ventilation cavity (22) in position.

4. An audio amplifier having a noise canceling structure according to claim 3, wherein: the noise reduction box is characterized in that mounting sliding grooves (14) are formed in two sides of the case (12), mounting sliding blocks (24) are arranged on two sides of an inner cavity of the noise reduction box (2), the mounting sliding grooves (14) are matched with the mounting sliding blocks (24), and one ends of the mounting sliding grooves (14) are fixed through bolts.

5. An audio amplifier with a noise cancellation structure according to claim 1, wherein: one side of the ventilation cavity (22) is connected with the through groove (27) and is arranged on one side of the cavity (25).

6. An audio amplifier having a noise canceling structure according to claim 5, wherein: an exhaust fan (221) is arranged in the ventilation cavity (22), and exhausts air to one side of the through groove (27).

7. An audio amplifier having a noise cancellation structure according to claim 6, wherein: a rotating plate (222) is arranged in the through groove (27), and the upper end of the rotating plate (222) is arranged in the through groove (27) through a movable shaft (223).