CN219980992U - Microphone device - Google Patents

Abstract

The present utility model provides a microphone device, comprising: a front shell; the rear shell is connected with the front shell in a matching way, and an accommodating space is formed by surrounding the rear shell and the front shell; the first circuit board is arranged in the accommodating space, and is provided with a microphone for collecting sound signals; the second circuit board is arranged in the accommodating space, and is provided with a signal processor which is electrically connected with the microphone to process sound signals; the second circuit board is arranged at intervals with the first circuit board. Through setting up microphone and signal processor respectively on first circuit board and second circuit board, also microphone and signal processor divide the board setting promptly, can reduce the signal interference between microphone and the signal processor, can reduce the production of noise floor, and then improve the pickup effect of microphone device.

Description

Microphone device

Technical Field

The utility model belongs to the technical field of microphones, and particularly relates to a microphone device.

Background

Microphones are energy conversion devices that convert sound signals into electrical signals, and are also called microphones, and the like, and are widely used in electronic devices that can interact with humans because they can transmit sound signals.

The microphone device is a device including a microphone, and is generally further provided with a signal processor, where the signal processor is configured to perform processing such as conversion and transmission on a sound signal collected by the microphone, so as to implement a preset function of the microphone device. However, in the existing microphone device, the microphone and the signal processor are generally disposed on the same circuit board, which results in noise floor to affect the sound pickup effect of the microphone device.

Disclosure of Invention

The embodiment of the utility model provides a microphone device, wherein a microphone and a signal processor are arranged in a split mode, so that noise floor is reduced, and the pickup effect of the microphone device is improved.

An embodiment of the present utility model provides a microphone apparatus including:

a front shell;

the rear shell is connected with the front shell and is surrounded with the front shell to form an accommodating space;

the first circuit board is arranged in the accommodating space, and is provided with a microphone for collecting sound signals;

the second circuit board is arranged in the accommodating space, and is provided with a signal processor which is electrically connected with the microphone to process the sound signals; the second circuit board is arranged at intervals with the first circuit board.

Optionally, the first circuit board is annular, and the first circuit board is disposed around the second circuit board.

Optionally, the first circuit board and the second circuit board are arranged on the same axis, and a first gap is formed between the edge of the second circuit board and the edge of the annular inner ring of the first circuit board.

Optionally, the second circuit board is circular, and the first circuit board is circular.

Optionally, in a thickness direction of the microphone device, a preset distance is provided between the first circuit board and the second circuit board.

Optionally, the front shell includes preceding shell wall and stand, first circuit board pastes and locates preceding shell wall, the one end of stand with preceding shell wall orientation one side of first circuit board is connected, the other end of stand with the butt of second circuit board.

Optionally, the microphone device further includes:

the first sealing piece is arranged on one side, away from the front shell wall, of the first circuit board and covers the microphone.

Optionally, the microphone device further includes:

and the middle shell is connected with one side of the front shell facing the first circuit board and is abutted with the first sealing piece.

Optionally, the microphone device further includes:

a second sealing member arranged on one side of the first circuit board, which is away from the microphone; the first circuit board is provided with an acoustic hole corresponding to the microphone, the second sealing piece is an annular sealing piece, and an annular space of the second sealing piece corresponds to the acoustic hole.

Optionally, the microphone device further includes:

and the heat dissipation piece is arranged on one side of the signal processor, which is away from the front shell.

Optionally, the rear case includes a rear case wall and a protrusion, and the rear case wall is connected with the front case to enclose the first circuit board and the second circuit board; the protrusion is arranged on one side of the rear shell wall facing the second circuit board, the protrusion corresponds to the heat dissipation piece, and a groove is formed on one side of the protrusion, which faces away from the second circuit board.

Optionally, the signal processor is disposed on a side of the second circuit board away from the first circuit board;

the microphone is arranged on one side of the first circuit board, which faces the second circuit board.

In the microphone device provided by the embodiment of the utility model, the microphone and the signal processor are respectively arranged on the first circuit board and the second circuit board, namely, the microphone and the signal processor are arranged in a split mode, so that signal interference between the microphone and the signal processor can be reduced, noise floor can be reduced, and the pickup effect of the microphone device is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the figures in the following description are only some embodiments of the utility model, from which other figures can be obtained without inventive effort for a person skilled in the art.

For a more complete understanding of the present utility model and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.

Fig. 1 is a schematic structural view of a microphone device according to an embodiment of the present utility model, with a first angle of a rear case removed.

Fig. 2 is a schematic structural diagram of a microphone device according to an embodiment of the present utility model with a second angle of the rear case removed.

Fig. 3 is an exploded view of a microphone device with a rear case removed.

Fig. 4 is a schematic structural view of a microphone device according to a third embodiment of the present utility model with a third angle of the rear case removed.

Fig. 5 is a schematic cross-sectional view of the microphone apparatus shown in fig. 4 along A-A.

Fig. 6 is a schematic diagram of a portion B of the microphone apparatus shown in fig. 5.

Fig. 7 is a schematic structural diagram of a middle shell according to an embodiment of the present utility model.

Fig. 8 is a schematic structural diagram of a microphone device according to an embodiment of the present utility model.

Fig. 9 is a schematic cross-sectional view of the microphone apparatus shown in fig. 8 along the direction C-C.

Fig. 10 is a schematic diagram of a portion D of the microphone apparatus shown in fig. 9.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Fig. 1 is a schematic view illustrating a first angle of a microphone device with a rear case removed according to an embodiment of the present utility model, and fig. 2 is a schematic view illustrating a second angle of the microphone device with a rear case removed according to an embodiment of the present utility model. The embodiment of the utility model provides a microphone device 1, where the microphone device 1 can collect and process sound signals, for example, the microphone device 1 can be a mobile electronic device such as a mobile phone, a notebook computer, a tablet, a sound box, a microphone, and the like.

The microphone arrangement 1 may comprise, among other things, a microphone 10 and a signal processor 20. The microphone 10 is used to collect sound signals, and the microphone 10 can be divided into moving coil, capacitive, electret and emerging silicon microsensors, wherein a more micro electret capacitor microphone is used, the principle of which is to use a polymeric material diaphragm with permanent charge isolation. The working principle of the coil microphone is that the vibrating diaphragm is vibrated by human voice through air, and then a magnetic field is formed between an electromagnetic coil winding on the vibrating diaphragm and a magnet surrounding the moving coil microphone to form weak fluctuation current. The current is supplied to the loudspeaker and the fluctuating current is turned into sound in the opposite process. In addition, there are a liquid microphone and a laser microphone, and the type of the microphone 10 is not particularly limited in the embodiment of the present utility model. The signal processor 20 is electrically connected to the microphone 10 to process the sound signal collected by the microphone 10 to obtain a sound amplifying signal, such as an amplified sound, and to control the microphone device 1 to emit the sound amplifying signal, so as to implement the function from sound pickup to sound amplifying of the microphone device 1, that is, the process of collecting and processing the sound signal of the microphone. The signal processor 20 may be understood as a control center of the microphone apparatus 1, where the signal processor 20 may perform signal acquisition, collection, integration and emission, and control the execution unit such as a speaker to emit amplified sound signals.

However, in the related art, the microphone and the signal processor are usually disposed on the same circuit board, and because the electronic components of the signal processor generate thermal noise during operation, noise floor is further caused and transmitted to the microphone through the circuit board, so as to affect the pickup effect of the microphone.

In order to reduce the influence of noise floor on the microphone in the microphone device, the microphone device is improved according to the embodiment of the utility model, and the description is carried out with reference to the accompanying drawings.

For example, please refer to fig. 1 and fig. 2 in combination with fig. 3, fig. 3 is a schematic exploded view of a microphone device with a rear casing removed according to an embodiment of the present utility model. The microphone arrangement 1 further comprises a first circuit board 30 and a second circuit board 40. The first circuit board 30 is used for mounting the microphone 10, the first circuit board 30 may also be referred to as a microphone driving board, the first circuit board 30 is used for supplying power to the microphone 10, and connection between signal lines or the like is achieved. The second circuit board 40 is used for mounting the signal processor 20, and the second circuit board 40 may also be referred to as a signal conversion board, and the signal processor 20 is an integrated circuit and has a plurality of circuit devices, which are respectively mounted on the second circuit board 40 to implement a signal processing function. The second circuit board 40 and the first circuit board 30 are spaced apart to increase the distance between the microphone 10 and the signal processor 20, thereby reducing the influence of thermal noise of the signal processor 20 on the microphone 10. By mounting the microphone 10 and the signal processor 20 on the first circuit board 30 and the second circuit board 40 in a split manner, the influence of thermal noise of the signal processor 20 on pickup of the microphone 10 can be reduced, and signal interference between the microphone 10 and the signal processor 20 can be reduced, thereby reducing generation of noise floor and improving pickup effect of the microphone apparatus 1.

In the microphone device 1 provided in the embodiment of the present utility model, the microphone 10 and the signal processor 20 are respectively disposed on the first circuit board 30 and the second circuit board 40, that is, the microphone 10 and the signal processor 20 are disposed separately, so that signal interference between the microphone 10 and the signal processor 20 can be reduced, noise floor can be reduced, and further, the pickup effect of the microphone device 1 is improved.

The plurality of microphones 10 may be circumferentially spaced apart, so that sound pickup can be performed from different angles for a certain area, and stereo performance of sound pickup and accuracy of sound pickup are improved. The projection of the microphone device 1 may be circular, square, polygonal or irregular, for example, the projection of the microphone device 1 is circular, which can be matched to improve the pick-up effect of the circumferential distribution of the microphone 10; on the other hand, the smoothness of the microphone device 1 can be improved, and the beauty of the microphone device 1 can be further improved.

The second circuit board 40 and the first circuit board 30 may be disposed at intervals on the same plane and/or disposed at intervals on different planes, so as to increase the distance between the signal processor 20 and the microphone 10, thereby reducing interference between signals and noise floor of the microphone apparatus 1, and the interval between the second circuit board 40 and the first circuit board 30 may be at least two ways.

In the first mode, the second circuit board 40 and the first circuit board 30 are disposed at intervals on the same plane. For example, the second circuit board 40 and the first circuit board 30 are square, and are disposed at intervals on the same plane, so as to reduce the influence of thermal noise of the signal processor 20 on the microphone 10. For another example, in order to improve the space utilization, thereby being beneficial to reducing the volume of the microphone apparatus 1, the first circuit board 30 may be configured to be annular, the first circuit board 30 is disposed around the second circuit board 40, that is, the second circuit board 40 is configured to have the same shape as the annular inner ring of the first circuit board 30, and the size of the annular inner ring of the first circuit board 30 is greater than the size between opposite edges of the second circuit board 40 along the same direction, so that an area surrounded by the annular shape of the first circuit board 30 can accommodate the second circuit board 40, and the two are adapted in shape, so that the area occupied by the first circuit board 30 and the second circuit board 40 as a whole can be reduced, and the first circuit board 30 and the second circuit board 40 are disposed at intervals, so that the influence of thermal noise of the signal processor 20 on the microphone 10 can be reduced. The first circuit board 30 may have a circular shape, a square shape or a polygonal shape, and the second circuit board 40 may have a circular shape, a square shape or a polygonal shape. Taking the first circuit board 30 as an example of a circular ring, the second circuit board 40 is circular, the first circuit board 30 and the second circuit board 40 are arranged on the same axis, that is, the centers of the first circuit board 30 and the second circuit board 40 are on the same axis, and the diameter of the annular inner ring of the first circuit board 30 is larger than that of the second circuit board 40, or a first gap is formed between the edge line of the annular inner ring of the first circuit board 30 and the edge line of the second circuit board 40, that is, the first circuit board 30 is sleeved outside the second circuit board 40, so that the shapes of the first circuit board 30 and the second circuit board 40 are matched, the problem of space waste is reduced, the occupied area of the whole first circuit board 30 and the whole second circuit board 40 is reduced, and the size of the microphone device 1 is reduced. It should be noted that, if the first circuit board is in a circular shape, the second circuit board is non-circular, such as square, and in the case of determining the size of the first circuit board, the area of the square second circuit board may be reduced, the blank area between the first circuit board and the second circuit board may be increased, the space utilization may be insufficient, and the arrangement of the power devices on the second circuit board may be affected due to the reduction of the size of the second circuit board.

It should be noted that, when the first circuit board 30 and the second circuit board 40 are manufactured, the same board may be cut to form the circular first circuit board 30 and the circular second circuit board 40, so that the consumption of the board may be saved and the utilization rate of the board may be improved. Due to process limitations, such as cutter thickness limitations during dicing, a process slot, such as 3mm, is provided between the first circuit board 30 and the second circuit board 40. In order to facilitate the mounting of the first circuit board 30 and the second circuit board 40 and also to further reduce signal interference between the first circuit board 30 and the second circuit board 40, a first gap may be spaced between the first circuit board 30 and the second circuit board 40, and the first gap may be greater than or equal to 3mm. In the manufacturing process, the second circuit board 40 is obtained by cutting an annular plate material between the first circuit board 30 and the second circuit board 40, and then the first circuit board 30 is cut from the plate material.

In the second way, the first circuit board 30 and the second circuit board 40 may be spaced up and down. For example, in the thickness direction of the microphone apparatus 1, the first circuit board 30 and the second circuit board 40 are arranged up and down, and a preset distance is provided between the first circuit board 30 and the second circuit board 40, so that the microphone 10 and the signal processor 20 are not on the same plane, and a certain distance is pulled apart, thereby further reducing the influence of noise floor generated by the components of the signal processor 20 on the second circuit board 40 on the microphone 10. Wherein the preset distance may be greater than or equal to 8mm, such as a value in the range of 8mm to 10mm, so that the second circuit board 40 may be spaced from the first circuit board 30 without affecting the arrangement of the circuit devices. It should be noted that, since the signal processor 20 needs to be soldered on the second circuit board 40, a soldering bump will be present on a side of the second circuit board 40 facing away from the signal processor 20, and therefore, when the first circuit board 30 and the second circuit board 40 are spaced up and down, a space occupied by the soldering bump needs to be reserved, that is, at least a thickness of 8mm needs to be reserved. After meeting the requirements of the soldering bump, if the preset distance is too large, such as more than 20mm, the thickness of the microphone apparatus 1 may be increased, which is disadvantageous for the miniaturized design of the microphone apparatus 1. Therefore, in order to not only satisfy the space required for the solder bump but also reduce the influence on the volume of the microphone apparatus 1, the preset distance may be set to a value of 10mm or less.

Further, the first circuit board 30 and the second circuit board 40 may be spaced on the same plane and also spaced in the thickness direction of the microphone device 1, so that the first circuit board 30 and the second circuit board 40 may be arranged in a matching manner, and the space inside the microphone device 1 is reasonably utilized, and a certain distance may be pulled between the microphone 10 and the signal processor 20, so that noise floor is reduced, and further the pickup effect of the microphone device 1 may be improved.

The signal processor 20 may be disposed on a side of the second circuit board 40 facing away from the first circuit board 30, and the microphone 10 may be disposed on a side of the first circuit board 30 facing toward the second circuit board 40, so that the microphone 10 and the signal processor 20 may be conveniently disposed.

The first circuit board 30 and the second circuit board 40 may be spaced apart in the thickness direction of the microphone device 1 by providing support posts. Illustratively, the microphone apparatus 1 further comprises a front housing 50 and a rear housing (not shown in the figures), the front housing 50, i.e. the housing facing the user side, towards which the user can sound. The rear case, i.e., a case facing away from the user, is connected to the front case 50 and encloses a receiving space (not shown) with the front case 50, and is connected to the front case 50 to encapsulate components inside the microphone apparatus 1 such as the microphone 10, the signal processor 20, the first circuit board 30, and the second circuit board 40. In another aspect, the microphone 10, the signal processor 20, the first circuit board 30, and the second circuit board 40 are disposed in the accommodating space. The front case 50 may have a circular shape, the front case 50 includes a front case wall 51 and a pillar 52, and one end of the pillar 52 is installed at one side of the front case wall 51, for example, the pillar 52 may be integrally formed with the front case wall 51. The first circuit board 30 is mounted on the same side of the front housing wall 51 as the upright 52, the first circuit board 30 is attached to the front housing wall 51, and the other end of the upright 52 abuts against the second circuit board 40 to support the second circuit board 40, so that the second circuit board 40 is lifted up by the upright 52 to achieve a spacing with the first circuit board 30 in the thickness direction. Wherein, a connecting piece can be further provided to fixedly connect the upright post 52 with the second circuit board 40, so as to improve the stability of the installation of the second circuit board 40.

Wherein, since the second circuit board 40 is lifted and the depths of the front case 50 and the rear case are not easily too deep, the problems that the front case 50 and the rear case are easily broken are prevented, etc., the microphone apparatus 1 may further include a middle case 60, the middle case 60 being disposed between the front case 50 and the rear case, and the middle case 60 being connected with the front case 50 and the rear case, respectively. Illustratively, in the thickness direction of the microphone apparatus 1, the middle case 60 may be disposed between the first circuit board 30 and the second circuit board 40, and the middle case 60 may have a ring shape to cover the first circuit board 30 and the microphone 10 thereon.

In order to improve the sealing effect on the microphone 10 and to reduce the influence of the microphone 10 on the signal processor 20, a seal may also be provided to seal the microphone 10.

For example, please refer to fig. 1 to 3 and fig. 4 to 6, fig. 4 is a schematic structural diagram of a microphone device according to an embodiment of the present utility model with a third angle of the rear case removed, fig. 5 is a schematic sectional structure of the microphone device along A-A direction shown in fig. 4, and fig. 6 is a schematic structural diagram of a portion B of the microphone device shown in fig. 5. The microphone arrangement 1 may further comprise a first seal 70 and a second seal 80.

The first seal 70 is provided on the side of the first circuit board 30 facing away from the front housing wall 51, and houses the microphone 10. That is, the first sealing member 70 seals the microphone 10 from behind the microphone 10, and the orientation of the signal processor 20 is set behind the microphone 10, so that the microphone 10 is sealed from behind the microphone 10, and interference of the signal processor 20 on the second circuit board 40 to the microphone 10 can be reduced. The middle case 60 is connected with the front case 50 toward the side of the first circuit board 30, and covers the first circuit board 30.

In an exemplary embodiment, please refer to fig. 1 to 6 in combination with fig. 7, fig. 7 is a schematic structural diagram of a middle shell according to an embodiment of the present utility model. The middle case 60 may include a body 61 and a protrusion 62, the body 61 is in a ring shape, the protrusion 62 is disposed at one side of the body 61 in the thickness direction, and the protrusion 62 is disposed corresponding to the microphone 10, and when the middle case 60 is connected with the front case 50, the protrusion 62 abuts against the microphone 10 through the first seal 70, so as to improve the sealing effect of the first seal 70 on the microphone 10. The middle shell 60 can press the first circuit board 30 and the microphone 10, and cooperate with the first sealing member 70 to form a sealed environment at the microphone 10, so as to isolate noise floor of the components of the signal processor 20 on the second circuit board 40. The shape of the protrusion 62 may be "+", which not only can abut against the first sealing member 70, but also can reduce the use of materials, reduce the contact area with the first sealing member 70, and avoid the occurrence of crushing the microphone 10.

The second seal 80 is arranged on the side of the first circuit board 30 facing away from the microphone 10, the second seal 80 being the front seal. For example, the first circuit board 30 has an acoustic hole 31 corresponding to the microphone 10, and the front wall 51 of the front case 50 has an acoustic hole at a corresponding position, so as to collect a sound signal of a user. Wherein the acoustic holes in the front housing wall 51 may be arranged in a conical shape in order to increase the acquisition rate of the sound signals. In order to reduce the phenomenon that dust enters the acoustic holes and dust accumulation blocks sound signals from entering the microphone 10, an air-permeable cloth can be arranged on the front shell wall 51 at the position corresponding to the acoustic holes, the air-permeable cloth is not too thick, and the thickness of the air-permeable cloth, which can block dust from entering and does not influence the collection of sound, is optimal and can be selected through testing.

Wherein the microphone 10 is on one side of the first circuit board 30 so as to block the acoustic port 31 to receive sound signals in the environment. The second sealing member 80 may be an annular sealing member, and the second sealing member 80 corresponds to the microphone 10, and is provided with the first circuit board 30 at a side facing away from the microphone 10, and exposes the acoustic hole 31, so that the microphone 10 can be sealed from the front, the collection efficiency of sound signals is improved, and the collection of sound by the acoustic hole 31 is not affected. The material of the second sealing member 80 may be the same as that of the first sealing member 70, and may be a sealable material, and the embodiment of the present utility model is not particularly limited herein.

For example, please refer to fig. 1 to 7 in combination with fig. 8 to 10, fig. 8 is a schematic structural diagram of a microphone device according to an embodiment of the present utility model, fig. 9 is a schematic sectional structural diagram of the microphone device shown in fig. 8 along the direction C-C, and fig. 10 is a schematic structural diagram of a portion D of the microphone device shown in fig. 9. The microphone arrangement 1 further comprises a heat sink 90 and a rear housing 100.

The heat sink 90 is disposed on a side of the signal processor 20 facing away from the front case 50, and the heat sink 90 is used for dissipating heat from the signal processor 20. It will be appreciated that the signal processor 20 may generate heat when operating, such as by not dissipating heat in time, which may easily affect the operating speed of the signal processor 20, and may easily cause fire in severe cases. Therefore, in order to dissipate heat and cool the signal processor 20, the heat dissipation device 90 is further disposed on the signal processor 20 for dissipating heat. For example, the heat sink 90 may be a heat dissipating silicone.

The rear case 100 includes a rear case wall 101 and a protruding portion 102, and the rear case wall 101 is connected with the front case 50 to enclose the first circuit board 30 and the second circuit board 40, that is, the rear case 100 and the front case 50 are cooperatively connected to form a housing and an external structure of the microphone device 1. The protruding portion 102 is disposed on a side of the rear case wall 101 facing the second circuit board 40, that is, the protruding portion 102 protrudes toward the inside of the microphone device 1, and the protruding portion 102 is disposed corresponding to the heat sink 90. For example, the protrusion 102 may abut the heat sink 90 to facilitate transferring heat from the signal processor 20 directly to the rear housing 100, reducing heat spreading. In some embodiments, a predetermined gap may be provided between the protrusion 102 and the heat sink 90, which may facilitate heat dissipation and prevent the protrusion 102 from crushing the signal processor 20.

It should be noted that the material of the rear case 100 may be aluminum or an aluminum alloy, and the higher the specific heat capacity of aluminum and the aluminum alloy, the more heat is absorbed or dissipated when the temperature rises or drops by 1 ℃. That is, the material of the rear housing 100 is beneficial to heat dissipation, but if the protruding portion 102 is not provided, the heat generated by the signal processor 20 may propagate through the heat dissipation member 90 in the microphone device 1, affecting the operation of other components. And, the protruding portion 102 is opened with the recess 103 on the side facing away from the second circuit board 40, and the recess 103 can be arranged to thin the protruding portion 102, so that heat can be quickly transferred out through the protruding portion 102.

Wherein the number of the protrusions 102 may be one, two, three, four or more, the embodiment of the present utility model is illustrated by taking four protrusions 102 arranged at intervals as an example, and should not be construed as limiting the number of the protrusions 102. The four protruding portions 102 may be arranged in two rows and two columns, and by providing the four protruding portions 102, an area for heat conduction may be increased, thereby facilitating heat conduction.

In the microphone device 1 provided in the embodiment of the present utility model, the microphone 10 and the signal processor 20 are respectively disposed on the first circuit board 30 and the second circuit board 40, that is, the microphone 10 and the signal processor 20 are disposed separately, so that signal interference between the microphone 10 and the signal processor 20 can be reduced, noise floor can be reduced, and further, the pickup effect of the microphone device 1 is improved. And the first circuit board 30 and the second circuit board 40 can be manufactured by using the same plate, so that the utilization rate of the plate can be improved, the arrangement of the first circuit board 30 and the second circuit board 40 is facilitated, and the utilization rate of the internal space of the microphone device 1 is improved. Providing the microphone 10 with the first seal 70 also on the side facing the second circuit board 40 may further reduce interference between the microphone 10 and the signal processor 20 and noise floor of the signal processor 20.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.

The microphone device provided by the embodiment of the present utility model has been described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present utility model, and the description of the above embodiments is only for helping to understand the method and core idea of the present utility model; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present utility model, the present description should not be construed as limiting the present utility model in summary.

Claims (12)

1. A microphone apparatus, comprising:

a front shell;

the rear shell is connected with the front shell and is surrounded with the front shell to form an accommodating space;

the first circuit board is arranged in the accommodating space, and is provided with a microphone for collecting sound signals;

the second circuit board is arranged in the accommodating space, and is provided with a signal processor which is electrically connected with the microphone to process the sound signals; the second circuit board is arranged at intervals with the first circuit board.

2. The microphone apparatus of claim 1 wherein the first circuit board is annular in shape and the first circuit board is disposed around the second circuit board.

3. The microphone apparatus of claim 2 wherein the first circuit board and the second circuit board are coaxially disposed with a first gap between an edge of the second circuit board and an annular inner rim edge of the first circuit board.

4. The microphone apparatus of claim 2 wherein the second circuit board is circular and the first circuit board is circular.

5. The microphone device according to any one of claims 1 to 4, wherein a predetermined distance is provided between the first circuit board and the second circuit board in a thickness direction of the microphone device.

6. The microphone device of claim 1, wherein the front housing comprises a front housing wall and a pillar, the first circuit board is attached to the front housing wall, one end of the pillar is connected to a side of the front housing wall facing the first circuit board, and the other end of the pillar is abutted to the second circuit board.

7. The microphone apparatus of claim 6 wherein the microphone apparatus further comprises:

the first sealing piece is arranged on one side, away from the front shell wall, of the first circuit board and covers the microphone.

8. The microphone apparatus of claim 7 wherein the microphone apparatus further comprises:

and the middle shell is connected with one side of the front shell facing the first circuit board and is abutted with the first sealing piece.

9. The microphone device according to claim 1 or 7, characterized in that the microphone device further comprises:

a second sealing member arranged on one side of the first circuit board, which is away from the microphone; the first circuit board is provided with an acoustic hole corresponding to the microphone, the second sealing piece is an annular sealing piece, and an annular space of the second sealing piece corresponds to the acoustic hole.

10. The microphone apparatus of claim 1 wherein the microphone apparatus further comprises:

and the heat dissipation piece is arranged on one side of the signal processor, which is away from the front shell.

11. The microphone apparatus of claim 10 wherein the rear housing includes a rear housing wall and a projection, the rear housing wall being connected to the front housing to enclose the first circuit board and the second circuit board; the protrusion is arranged on one side of the rear shell wall facing the second circuit board, the protrusion corresponds to the heat dissipation piece, and a groove is formed on one side of the protrusion, which faces away from the second circuit board.

12. The microphone apparatus of claim 1 wherein the signal processor is disposed on a side of the second circuit board facing away from the first circuit board;

the microphone is arranged on one side of the first circuit board, which faces the second circuit board.