WO2022094930A1

WO2022094930A1 - Microphone device

Info

Publication number: WO2022094930A1
Application number: PCT/CN2020/127138
Authority: WO
Inventors: 李建成
Original assignee: 广州视源电子科技股份有限公司; 广州视睿电子科技有限公司
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2022-05-12
Also published as: CN115211136A

Abstract

Provided is a microphone device. The microphone device provided in the present invention comprises: a mounting frame, three supports and three microphone boards, wherein three fan-shaped areas with a central angle of 120 degrees are demarcated by taking the center of the mounting frame as the center of a circle, and one of the supports is fixed in each of the fan-shaped areas; and one of the microphone boards is mounted on each of the supports, the microphone boards are respectively provided with at least one sound pickup hole, and the microphone boards are inclined by a preset angle relative to the mounting frame and faces away from the center of the mounting frame, so as to increase a sound pickup direction, improve the uniformity of sound pickup, and reduce the reflection of a sound wave, thereby improving a sound pickup effect and improving the sound quality.

Description

microphone equipment

technical field

The present invention relates to the field of audio technology, and in particular to a microphone device

Background technique

A microphone is an energy conversion device that can convert sound signals into electrical signals. Microphones are used in various fields. Taking the application in the conference room as an example, multiple microphones are placed on the table to pick up sounds in different positions.

The microphone usually includes a shell, a circuit board and a pickup element, wherein the pickup element is integrated on the circuit board, and the circuit board is installed in the shell; and an opening is provided in the shell, and the opening is opposite to the pickup element, so that the sound The signal is picked up by the pickup element through the opening.

However, the sound pickup element is integrated on the circuit board, and the sound pickup effect in the direction opposite to the opening is better, but the sound pickup effect in other directions is poor, which leads to uneven sound pickup, resulting in poor pickup effect of the microphone. affect the sound quality.

SUMMARY OF THE INVENTION

The present invention provides a microphone device, which includes: an installation frame, three support frames and three microphone boards; in the three sector-shaped areas with the central angle of 120 degrees divided by the center of the installation frame as the center, each The fan-shaped area is fixed with one of the support frames; each of the support frames is mounted with one of the microphone boards, the microphone boards are provided with at least one sound pickup hole, and the microphone boards are opposite to the installation frame. A predetermined angle is inclined away from the center of the mounting frame.

The technical effect of the present invention is as follows: the microphone device of the present invention includes an installation frame, three support frames and three microphone boards; in the three sector-shaped areas with the central angle of 120 degrees divided by the center of the installation frame as the center of the circle, Each of the fan-shaped areas is fixed with one of the support brackets; each of the support brackets is mounted with one of the microphone boards, the microphone boards are provided with at least one sound pickup hole, and the microphone boards are opposite to the The installation frame is inclined by a preset angle away from the center of the installation frame, thereby increasing the sound pickup direction, improving the sound pickup uniformity, reducing the reflection of sound waves, thereby improving the sound pickup effect and improving the sound quality.

Description of drawings

1 is an exploded view of a microphone device provided by an embodiment of the present invention;

2 is a cross-sectional view of a microphone device provided by an embodiment of the present invention;

Fig. 3 is the enlarged schematic diagram of P in Fig. 2;

4 is a schematic diagram of an orientation of an installation frame, a microphone board, and a control motherboard provided in Embodiment 1 of the present invention;

Fig. 5 is the top view of Fig. 4;

Fig. 6 is the front view of Fig. 4;

7 is a schematic diagram of another direction of the installation frame, the microphone board, and the control motherboard provided in Embodiment 1 of the present invention;

8 is a schematic structural diagram of a support frame of a microphone device according to an embodiment of the present invention;

Fig. 9 is the front view of Fig. 8;

Fig. 10 is the left side view of Fig. 8;

11 is a schematic structural diagram of an installation frame provided by Embodiment 1 of the present invention;

12 is a schematic diagram of a mounting frame, a microphone board, and a control motherboard provided in Embodiment 2 of the present invention;

13 is a schematic diagram of a direction of a first casing of a microphone device according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of another direction of the first housing of the microphone device according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of a first casing of a microphone device according to an embodiment of the present invention.

Detailed ways

The existing sound pickup elements are integrated on the circuit board, which have poor sound pickup effect on the sound signal in the relatively plane of the opening, and poor sound pickup effect on the sound in other directions, which leads to uneven sound pickup and poor sound pickup effect of the microphone.

In view of this, the present invention provides a new microphone device, the microphone device includes a mounting frame, three support frames and three microphone plates, and the center of the mounting frame is the center of the circle to divide three fan-shaped areas with a central angle of 120 degrees , each fan-shaped area is fixed with a support frame, each support frame is installed with a microphone board, the microphone board is provided with at least one sound pickup hole, and the microphone board is inclined relative to the center of the installation frame away from the installation frame by a preset angle , so that it can pick up sounds in multiple directions, improve the uniformity of sound pickup, increase the pickup direction, reduce the reflection of sound waves, and improve the sound pickup effect.

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

1 to 3, an embodiment of the present invention provides a microphone device, which includes: an installation frame 1, three support frames 2, and three microphone plates 3; and the center of the installation frame 1 is divided into three central angles In the fan-shaped area 10 of 120 degrees, each fan-shaped area 10 is fixed with a support frame 2; the support frame 2 is fixed on one side of the installation frame 1, and a microphone board 3 is installed on each support frame 2, and the microphone board 3 is installed on each support frame 2. The board 3 is elongated, and at least one sound pickup hole is provided on the microphone board 3; The extension line forms a triangular structure, that is, the ray projected by each microphone board 3 on the mounting frame 1 forms one side of the above-mentioned triangular structure. In this embodiment, the above-mentioned projection is an orthographic projection.

Among them, the mounting frame 1 is used as a structure for installing the support frame 2 and the microphone board 3, and its structure can be various. For example, the mounting frame 1 includes a fixing plate and a fixing column arranged on one side of the fixing plate. The fixing column and the shell of the microphone device connection, the fixing plate is connected with the support frame 2. For another example, the mounting frame 1 includes a middle mounting plate and a frame arranged on the edge of the mounting plate. The support frame 2 is fixed on the mounting plate, and the mounting plate is clamped to the housing of the microphone device, and the frame plays the role of blocking the gap.

Exemplarily, referring to FIG. 5 , the mounting frame 1 has a circular structure, and its center is a circle to form three fan-shaped areas 10 with a central angle of 120 degrees, that is to say, the circular mounting frame 1 is divided into three sectors. the same sector 10. For the convenience of installation, three partition bars 19 are arranged on the installation frame 1 , and the partition bars 19 divide the circular installation frame 1 into three fan-shaped areas 10 . Of course, the partition bars 19 can also play a role in strengthening the structural strength of the mounting frame 1 .

The two ends of the support frame 2 are respectively connected with the installation frame 1 and the microphone board 3, which are used to support the microphone board 3 to a certain height, so that the microphone board 3 and the installation frame 1 are spaced apart, so as to improve the sound pickup ability of the microphone board 3 and avoid The structure on the mounting frame 1 blocks the microphone board 3, resulting in poor sound pickup effect.

As a structure for picking up sound signals, the microphone board 3 includes a PCB board and a sound pickup element integrated on the PCB board, and a sound pickup hole is provided on the PCB board. The pickup element is usually integrated on the back side of the PCB board, the pickup hole is opposite to the pickup element, and the pickup hole penetrates the PCB board, so that the sound can be picked up by the pickup element through the pickup hole. For example, as shown in FIG. 4 and FIG. 6 , the microphone board 3 is provided with a first sound pickup hole 31 and a second sound pickup hole 32 , and the first sound pickup hole 31 and the second sound pickup hole 32 correspond to each other. position, and set up a pickup element respectively. The sound pickup hole can be a circular hole arranged on the microphone board 3, which is convenient for processing and is beneficial to improve the sound pickup effect.

The microphone device provided by the embodiment of the present invention includes three support frames 2 and three microphone boards 3 , and each support frame 2 is mounted with a microphone board 3 , that is, the support frames 2 and the microphone boards 3 are in one-to-one correspondence .

The projection of the three microphone boards 3 on the mounting frame 1 forms a triangular structure. In some embodiments, the three microphone boards 3 are sequentially arranged along the edge of the mounting frame 1 to form a triangle.

It should be understood that the "triangular structure" is understood in a broad sense: when the three microphone boards 3 are in contact with each other end to end, the projection on the mounting frame 1 is a closed triangle; The projection on the mounting frame 1 is an open triangular structure.

Thus, the microphone device provided by the embodiment of the present invention includes an installation frame 1, three support frames 2, and three microphone boards 3; and the center of the installation frame 1 is used as the center to divide three fan-shaped areas 10 with a central angle of 120 degrees. In each fan-shaped area 10, a support frame 2 is fixed, and both ends of the support frame 2 are respectively connected with the installation frame 1 and the microphone board 3. The support frame 2 supports the microphone board 3 away from the installation frame 1 to avoid the The structure shields the microphone board 3 and causes poor sound pickup effect; the microphone board 3 is a long strip, and the microphone board 3 is provided with at least one sound pickup hole to pick up sound; the different fan shapes of the three microphone boards 3 on the installation frame 1 Area 10, and the microphone board 3 is inclined at a preset angle relative to the center of the installation frame 1 and away from the center of the installation frame 1, so that the sound pickup holes on different microphone boards 3 face different directions, so that sounds in multiple directions can be picked up, and the sound pickup can be increased. Sound direction, improve the uniformity of sound pickup, reduce the reflection of sound waves, and then improve the pickup effect and improve the sound quality.

In a possible implementation manner, the microphone board 3 has a long side and a short side, and the preset angle includes the second preset angle and/or the third preset angle. The microphone board 3 is inclined relative to the mounting frame 1 by a second preset angle along its long side direction, and/or the microphone board 3 is inclined relative to the mounting frame 1 by a third predetermined angle along its short side direction. In a specific implementation manner, the microphone board 3 is a rectangular board or a quasi-rectangular board; the microphone board 3 is inclined relative to the installation frame 1 by a second preset angle along its length direction L; and/or, the microphone board 3 is along its width direction W is inclined at a third preset angle relative to the mounting frame 1 .

For the convenience of description, the surface formed by the long side and the wide side of the rectangular microphone board 3 is defined as the long and wide side, and the surface formed by the long side and the high side in the thickness direction of the rectangular microphone board 3 is defined as the long and high side.

The microphone board 3 is inclined relative to the mounting frame 1 by a second preset angle along its length direction L, that is, the length and width sides of the microphone board 3 are inclined relative to the mounting frame 1 by a second predetermined angle. That is, the vertical distances between the two ends of the microphone board 3 in the longitudinal direction L thereof and the mounting frame 1 are different. This is beneficial to widen the pickup direction, thereby improving the pickup effect. 6 and 9, the height of the first column 22 of the support frame 2 to be described below is higher than the height of the second column 23, so that the microphone board 3 is inclined relative to the installation frame 1 along its length direction L. .

The microphone board 3 is inclined relative to the mounting frame 1 by a third predetermined angle along its width direction W, that is, the long and high side surfaces of the microphone board 3 are inclined relative to the mounting frame 1 by a third predetermined angle. That is to say, the vertical distance between the two ends of the microphone board 3 along the width direction W and the mounting frame 1 is different, and the vertical distance between the inner end of the microphone board 3 and the mounting frame 1 along the width direction W is greater than the vertical distance between the outer end and the mounting frame 1 of the microphone board 3 The vertical distance is so that the microphone board 3 is inclined outward, which is beneficial to increase the sound pickup direction of the microphone board 3 . Exemplarily, referring to FIGS. 6 and 10 , the first support wall 241 of the fixing seat 24 of the support frame 2 to be described below is inclined inwardly relative to the plate surface of the support plate 21 , so that the microphone plate 3 is opposite along its width direction W. Mounting frame 1 is inclined.

The embodiments of the present invention do not limit the specific values of the second preset angle and the third preset angle, and those skilled in the art can set them according to actual conditions.

8 to 10 , in some examples, the support frame 2 includes a support plate 21 and a first column 22 and a second column 23 spaced at both ends of the support plate 21 . The support plate 21 is fixedly connected to the installation frame 1 , and the first column The upright post 22 is fixedly connected to one end of the microphone board 3 , and the second upright post 23 is fixedly connected to the other end of the microphone board 3 .

Specifically, the supporting plate 21 can be a rectangular plate, a circular plate, an oval plate, etc. Optionally, the supporting plate 21 is a rectangular plate, which is convenient for processing and installation. The two ends of the support plate 21 are respectively provided with a first column 22 and a second column 23. Optionally, the support plate 21, the first column 22 and the second column 23 are integrally formed as one piece, which is beneficial to improve the structural strength and stability. .

In this example, the support frame 2 is fixedly connected to the installation frame 1 through the support plate 21, which is beneficial to increase the connection area between the support plate 21 and the installation frame 1, thereby improving the stability of the support frame 2 for supporting the microphone board 3; A first column 22 and a second column 23 are respectively provided at both ends to be fixedly connected with the microphone board 3 , so as to further improve the stability of the support frame 2 supporting the microphone board 3 .

In some embodiments, the heights of the first upright column 22 and the second upright column 23 are the same, and at this time, the microphone plate 3 is arranged in parallel with the support plate 21 . In other embodiments, the height of the first column 22 is higher than that of the second column 23 , that is, the height of the first column 22 perpendicular to the support plate 21 is higher, and the second column 23 is perpendicular to the support plate 21 . height is lower. The end of the microphone board 3 connected to the first column 22 is the higher end, and the end of the microphone board 3 connected to the second column 23 is the lower end. Under the condition that the interval between the first upright 22 and the second upright 23 is the same, compared with the case where the height of the first upright 22 and the second upright 23 is the same, the first upright 22 is higher than the second upright 23, which is beneficial to support a longer dimension. The large microphone board 3 is beneficial to widen the pickup direction.

In this embodiment, the height of the first column 22 is higher than that of the second column 23, so that the microphone board 3 is installed obliquely along its length direction, which is beneficial to widen the sound pickup direction, thereby improving the sound pickup effect.

Moreover, the first column 22 of the support frame 2 is close to the second column 23 of the adjacent support frame 2 . That is to say, the distance between the first column 22 of one support frame 2 and the second column 23 of the adjacent support frame 2 is closer, so that, in the circumferential direction of the triangular structure, the three microphone boards 3 form "high, low, The undulating structure of "high, low...", that is, in the circumferential direction of the triangular structure, the higher end and the lower end between the adjacent two microphone boards 3 are close together, and this arrangement is beneficial to widen the sound pickup direction and reduce the sound wave. reflection.

The first uprights 22 and the second uprights 23 may be arranged perpendicular to the support plate 21 , or the first uprights 22 and the second uprights 23 may be arranged obliquely with respect to the support plate 21 . Specifically referring to 9, the first column 22 and the second column 23 are parallel, and a preset inclination angle λ is formed between the first column 22 and the support plate 21, wherein the inclination angle λ ranges from 30° to 45° or 45° ~60°. Under the condition that the lengths of the first upright column 22 and the second upright column 23 are the same, when the first upright column 22 and the second upright column 23 are inclined relative to the vertical arrangement, the inclination angle of the microphone board 3 relative to the support plate 21 is larger, so that Helps to improve the pickup area.

The first column 22 and the second column 23 can be fixedly connected to the microphone board 3 in the same manner or in different ways. In this embodiment, the first upright post 22 and the second upright post 23 are fixedly connected to the microphone board 3 in the same manner, which is convenient for installation. For example, the first upright post 22 and the second upright post 23 are respectively clamped to the microphone board 3 , and for another example, the first upright post 22 and the second upright post 23 are respectively bonded to the microphone board 3 .

In a specific implementation manner, the first upright post 22 and the second upright post 23 are respectively fixedly connected to the microphone board 3 through screws. 8 to 10, the first column 22 and the second column 23 are respectively provided with a fixed seat 24, the fixed seat 24 includes a first support wall 241 and a second support wall 242, the first support wall 241 and The second support wall 242 is connected to form a support groove 243 for accommodating the microphone board 3 ; the first support wall 241 is connected with the microphone board 3 by screws.

Specifically, the fixing seat 24 may be a V-shaped structure, which includes a first support wall 241 and a second support wall 242 , and the first support wall 241 and the second support wall 242 are connected to form a support groove 243 . Optionally, the fixing base 24 is an integral piece formed with the first upright column 22 and the second upright column 23 , which is convenient for processing and helps to improve the structural strength.

In order to further improve the structural strength of the support frame 2, the support frame 2 is provided with reinforcing plates 25 at the first upright column 22 and the second upright column 23 respectively. The reinforcement plate 25 is perpendicular to the plate-shaped first column 22 ; the other reinforcement plate 25 is connected to the second column 23 and the support plate 21 respectively, and the reinforcement plate 25 is perpendicular to the plate-shaped second column 23 . Of course, the arrangement form of the reinforcing plate 25 is not limited to this. For example, the reinforcing plate 25 may also be arranged at intervals along the circumferential direction of the first upright column 22 and the second upright column 23 .

In this embodiment, the microphone board 3 is a rectangular board, and the first support wall 241 and the second support wall 242 are vertical, so that the side surfaces of the microphone board 3 are all attached to the first support wall 241 and the second support wall 242, The reliability of the support of the fixing seat 24 is improved. Optionally, the area of the first support wall 241 may be larger than that of the second support wall 242 , so as to provide a larger support surface to support the microphone board 3 .

In order to fix the microphone board 3, the first support wall 241 is provided with a first threaded hole 2411, the microphone board 3 is provided with a first connection hole, and the first screw 26 passes through the first connection hole and is threadedly connected to the first threaded hole 2411, Therefore, both ends of the microphone board 3 are respectively fixed on the first support wall 241 .

In order to improve the reliability of the fixed connection, a connection post 2412 is provided on the outer side of the first support wall 241, and the first threaded hole 2411 penetrates the thickness of the first support wall 241 and the connection post 2412, thus increasing the length of the first threaded hole 2411, That is, the length of the screw connection between the first screw 26 and the first threaded hole 2411 is increased.

During installation, the microphone board 3 is first placed in the support groove 243 , the second support wall 242 supports the microphone board 3 , and then the first screw 26 is connected to the first threaded hole 2411 . In this embodiment, the second support wall 242 is provided to form the support groove 243 , so as to improve the convenience of installation of the microphone board 3 .

In order to further improve the installation convenience of the microphone board 3, the fixed seat 24 on the first column 22 further includes a limit stop arm 244, the limit stop arm 244 is connected with the first support wall 241, and the limit stop arm 244 is located in the first The support wall 241 is away from one end of the second column 23 .

Specifically, the limit stop arm 244 and the fixing seat 24 are integrally formed as an integral piece, which is convenient to process and has high structural strength. 9 , the limit stop arm 244 may include a connecting arm 2441 and a limit arm 2442, wherein the connecting arm 2441 is connected with the first support wall 241, and the end of the connecting arm 2441 is away from the support plate 21 and extends upward to form a limit stop The arm 2442, the limiting arm 2442 is higher than the first support wall 241.

During installation, the higher end face of the microphone board 3 is in contact with the limiting arm 2442 , so that the first connection hole of the microphone board 3 is opposite to the first threaded hole 2411 , which further improves the installation convenience of the microphone board 3 .

Continuing to refer to FIGS. 8 to 10 , the first support wall 221 is inclined by the first preset angle α relative to the plate surface A of the support plate 21 and away from the center of the mounting frame 1 , that is to say, the microphone plate 3 is provided with the side surface of the pickup hole. It is inclined outward, so that the pickup hole faces the outer casing, which is beneficial to widen the pickup area. Wherein, the first preset angle α is 30°˜45° or 45°˜60°, which can widen the sound pickup direction of the microphone board 3 .

In this embodiment, the microphone board 3 is connected to the first support wall 221 , so that the microphone board 3 is inclined along its width direction, which is beneficial to widen the sound pickup direction of the microphone board 3 . In addition, each microphone board 3 has the same inclination angle, which can improve the uniformity of sound pickup and avoid the problem of sound signal attenuation in local areas.

There are various ways for the support plate 21 to be connected to the installation frame 1 . In some examples, the support plate 21 is connected to the installation frame 1 through screws. 4 , 5 and 11 , the support plate 21 is provided with a second connection hole 211 , the mounting frame 1 is provided with a second threaded hole 15 , and the second screw 27 passes through the second connection hole 211 and the second thread The holes 15 are connected, thus fixing the support plate 21 on the mounting frame 1 . Optionally, the support plate 21 is provided with a plurality of second connection holes 211 at intervals along its length direction, for example, two; the installation frame 1 is provided with the same number of second threaded holes 15, so that the support plate 21 and the installation frame are provided with the same number of second threaded holes 15. There are multiple connection positions between 1, which improves the stability and reliability of the connection between the support frame 2 and the installation frame 1.

In other examples, the support plate 21 is snapped with the mounting frame 1 . Specifically referring to 12, the installation frame 1 is provided with a third buckle 17 , the support plate 21 is provided with a clamping bump 213 that cooperates with the third buckle 17 , and the clamping bump 213 abuts against the third buckle 17 , so as to fix the support plate 21 on the mounting frame 1 . Optionally, a plurality of snap-fit projections 213 are provided in the circumferential direction of the support plate 21. For example, when the support plate 21 is rectangular, at least two sides of the support plate 21 are provided with snap-fit projections 213. The two long sides of the rectangular support plate 21 are provided with two snap-fit projections 213 at intervals; correspondingly, the third snap-fits 17 provided on the mounting frame 1 correspond to the snap-fit projections 213 one-to-one.

In order to facilitate the connection between the support plate 21 and the mounting frame 1 , a positioning slot 212 is provided on the support plate 21 , and a positioning post 11 matched with the positioning slot 212 is provided on the mounting frame 1 , through the positioning post 11 and the positioning slot 212 In cooperation, the convenience of connection between the support plate 21 and the installation frame 1 is improved.

4 and 12, in order to further improve the convenience and reliability of the installation of the support frame 2, a plurality of limit protrusions 16 are provided on the installation frame 1, and the plurality of limit protrusions 16 are spaced along the circumferential direction of the support plate 21. It is arranged to limit the position of the support plate 21 , for example, one limit protrusion 16 is provided on the short side of the rectangular support plate 21 , and two limit protrusions 16 are provided at intervals on the long side of the rectangular support plate 21 .

In one possible embodiment, the microphone plate 3 is provided with a plurality of sound pickup holes, and the plurality of sound pickup holes are arranged at intervals along the length direction of the microphone plate 3 . The microphone board 3 is provided with two sound pickup holes at intervals as an example for description, and the two sound pickup holes are the first sound pickup hole 31 and the second sound pickup hole 32 respectively.

Optionally, the distance between the centers of the first sound pickup hole 31 and the center of the second sound pickup hole 32 is not less than 35 mm, so as to avoid sound interference caused by the distance between the two sound pickup holes being too small.

Optionally, the height difference between the first sound pickup hole 31 and the second sound pickup hole 32 ranges from 8 to 12 mm, and optionally, the height difference between the first sound pickup hole 31 and the second sound pickup hole 32 is 10 mm. The first sound pickup holes 31 of the three microphone boards 3 are at the same height, and the second sound pickup holes 32 of the three microphone boards 3 are at the same height. This arrangement can achieve layered sound pickup and improve the sound pickup area.

Optionally, referring to FIG. 6 , the microphone board 3 is installed obliquely. For example, the dashed triangle marked in FIG. 6 forms a first right-angled side along the X direction, a second right-angled side along the Y-direction, and connects the first right-angled side and the second right-angled side to form an inclined side, wherein the first right-angled side, the second right-angled side The length ratio of the two right-angled sides and the inclined side may be 3:4:5, so that the first right-angled side, the second right-angled side and the inclined side form a right-angled triangle. The installation direction of the microphone board 3 is the extension direction of the inclined side, which is beneficial to improve the sound pickup effect. Of course, the inclination direction of the microphone board 3 is not limited to the above, and it can also be installed along the hypotenuse direction of the triangle of other dimensions.

The projection of the three microphone boards 3 on the mounting frame in the embodiment of the present invention is an equilateral triangle, and the six sound pickup holes of the three microphone boards 3 form a circular sound pickup area, which is at the same distance from the outer speaker net. This is conducive to obtaining a consistent pickup signal and improving the authenticity of the sound. Of course, those skilled in the art can filter and coordinate with the software program to further improve the sound quality and effect of the sound.

Of course, the number of sound pickup holes provided on the microphone board 3 is not limited to two, and those skilled in the art can set them according to actual conditions.

The microphone device provided by the embodiment of the present invention further includes a control motherboard 4 to control the working state of the microphone device. The control board 4 is integrated with a processor, a memory, a battery, and the like. In order to realize data transmission between the microphone device and the external electronic device and/or supply power to the microphone device, the control main board 4 is provided with an external socket 42 for data transmission with the external electronic device and/or receiving power from the external electronic device.

Wherein, the control main board 4 is installed on the other side of the installation frame 1 , that is, the control main board 4 and the support frame 2 are respectively installed on the two sides of the installation frame 1 . The control motherboard 4 is fixed on the mounting frame 1 in various forms. The control motherboard 4 is clamped to the mounting frame 1. For another example, referring to FIG. 7 and FIG. 11 , the mounting frame 1 is provided with a third threaded hole 18, and the control motherboard 4 A third connection hole is provided on the upper part, and the third screw 41 passes through the third connection hole and is threadedly connected with the third threaded hole 18 , so as to fix the control main board 4 on the installation frame 1 .

Further, the mounting frame 1 is provided with a plurality of third threaded holes 18 , and correspondingly, the control main board 4 is also provided with a plurality of third connection holes, and the third connection holes correspond to the third threaded holes 18 one-to-one. For example, one third connection hole is respectively provided at the four corner positions of the rectangular control main board 4 , and correspondingly, the mounting frame 1 is also provided with four third threaded holes 15 . With this arrangement, there can be multiple connection positions between the installation frame 1 and the control main board 4 , which further improves the stability of the connection between the installation frame 1 and the control main board 4 .

In order to realize the signal connection between the microphone board 3 and the control board 4, a cable 5 is provided between the microphone board 3 and the control board 4, and the two ends of the cable 5 are respectively provided with electrical sockets; Electric sockets are provided, and the two electric sockets are electrically connected to the electric sockets on the control main board 5 and the microphone board 3 respectively.

The electrical sockets provided at both ends of the cable 5 are respectively defined as the first electrical socket 51 and the second electrical socket 52, the control main board 5 is integrated with the first electrical socket, the microphone board 3 is integrated with the second electrical socket, and the first electrical socket is integrated on the control board 5. An electrical socket 51 is plugged into the first electrical socket, and a second electrical socket 52 is plugged into the second electrical socket, so as to realize the electrical connection between the control board 5 and the microphone board 3 . Correspondingly, the mounting frame 1 is provided with a via hole 14 to allow the cable 5 to pass through.

Optionally, the first electrical socket 51 and the second electrical socket 52 may be FFC (Flexible Flat Cable, flexible flat cable) sockets, and the cable 5 is an FFC cable. Control the signal transmission of the main board 4 . Among them, the FFC cable is a flexible flat cable, which is not only convenient for bending and wiring, but also helps to reduce the installation space.

In this embodiment, the electrical connection between the microphone board 3 and the control main board 4 is realized through the cable 5 and the electrical socket, the connection is convenient and simple, and it is beneficial to improve the production efficiency.

Continuing to refer to FIGS. 1 and 2 and FIGS. 13 to 15 , the microphone device provided by the embodiment of the present invention further includes an outer casing and a telescopic rod 8 , and the outer casing is formed with an accommodation space for accommodating the mounting frame 1 , the support frame 2 and the microphone board 3 ; The opposite side of the outer casing and the microphone board 3 is evenly distributed with a number of sound-piercing holes 72, and the other side of the outer casing is connected with the telescopic rod 8.

Exemplarily, the outer casing includes a first casing 6 and a second casing 7 , wherein, referring to FIG. 14 , the first casing 6 is provided with a snap groove 61 ; referring to FIG. 11 , the mounting frame 1 is provided with a first The clip 12, the first clip 12 is clipped with the clip slot 61, so as to realize clip joint of the first housing 6 and the installation frame 1. Optionally, a plurality of snap-fit grooves 61, for example, four, are provided at intervals along the circumferential direction of the first housing 6; In this way, there are multiple clamping positions between the first casing 6 and the installation frame 1 , and the reliability of the connection between the first casing 6 and the installation frame 1 is improved. In addition, the first housing 6 is also provided with an external opening 63 to avoid the external socket 42 , so that the wires can pass through the external opening 63 to be electrically connected to the external socket 42 . Wherein, the external socket 42 may be an FFC socket, and the wire is connected with an FFC connection seat, and the communication connection between the control main board 4 and the external electronic device is realized through the external socket 42 and the wire.

Referring to FIG. 15 , the second shell 7 is provided with a second buckle 71 ; with continued reference to FIG. 11 , the mounting frame 1 is provided with a clamping hole 13 , and the second buckle 71 is clamped with the clamping hole 13 , thereby realizing the second The housing 7 is clamped to the mounting frame 1 . Optionally, a plurality of second snaps 71 are provided at intervals along the axial direction of the second housing 6 , for example, four; correspondingly, the number of snap holes 13 and second snaps 71 provided on the mounting frame 1 In this way, there are multiple clamping positions between the second casing 7 and the mounting frame 1 , thereby improving the reliability of the connection between the second casing 7 and the mounting frame 1 .

In this embodiment, the first housing 6 and the second housing 7 are respectively clamped to the mounting frame 1 to form an accommodation space for accommodating the mounting frame 1 , the support frame 2 , the microphone board 3 and the control main board 4 .

In this embodiment, a plurality of sound-piercing holes 72 are evenly distributed on the second casing 7, so that the sound signal can pass through the second casing 7 to be picked up by the microphone board 3, without the need for additional speaker nets, which is beneficial to simplify the microphone equipment Structure. It should be noted that, in the second housing 7 shown in FIG. 15 , the sound-piercing hole is not shown.

1 and 2, the first casing 6 of the outer casing is connected to the telescopic rod 8. Specifically, one end of the telescopic rod 8 is provided with a first connecting head, and the first connecting head can be a threaded column; A casing 6 is provided with a connecting groove 62 , and the connecting groove 62 may be a threaded blind hole. The first connecting head is connected with the connecting groove 62 , so that the first casing 6 is connected with the telescopic rod 8 .

The other end of the telescopic rod 8 may also be provided with a second connector, and the second connector is connected to the wall mount 9 . Specifically, the wall mount 9 includes a connecting cylinder 91 and a fixing plate 92, wherein the connecting cylinder 91 is fixedly connected with the second connecting head, for example, the connecting cylinder 91 is connected with the second connecting head by interference; The two connectors are screwed together. The fixing plate 92 is used to connect with the ceiling, wall, etc., so that the outer casing can be suspended in the air.

The telescopic rod 8 can be an aluminum material, which can be extended or shortened to adjust the position of the outer casing.

The microphone device of this embodiment adjusts the position of the outer casing and the microphone plate 3 in the outer casing through the telescopic rod 8, thereby improving the sound pickup effect. In addition, the outer casing is suspended in the air, which reduces the installation space, and can optimize the sound wave confusion caused by the return of the indoor sound wave, and can improve the output sound quality to meet the needs of users.

To sum up, the microphone device provided by the embodiment of the present invention has at least the following advantages:

1. The microphone device of the present invention is suspended indoors through a telescopic rod, without hand-holding, and is easy to operate; it can also avoid collision damage.

2. The triangularly arranged microphone board 3 is beneficial to improve the sound pickup area and sound pickup effect of the microphone board 3 .

3. The microphone device of the present invention has the advantages of simple structure, small volume, low cost and simple and convenient installation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims

A microphone device is characterized in that it comprises: an installation frame, three support frames and three microphone boards; in the three sector-shaped areas with the central angle of 120 degrees divided by the center of the installation frame as the center of the circle, each of the The fan-shaped area is fixed with a support frame;

Each of the support frames is mounted with one of the microphone boards, the microphone board is provided with at least one sound pickup hole, and the microphone board is inclined at a preset angle relative to the mounting frame away from the center of the mounting frame .
The microphone device according to claim 1, wherein the support frame comprises a support plate and a first column and a second column spaced at both ends of the support plate, and the support plate is fixedly connected to the installation frame , the first column is fixedly connected with one end of the microphone board, and the second column is fixedly connected with the other end of the microphone board.
The microphone device according to claim 2, wherein the height of the first column is higher than the height of the second column.
The microphone device according to claim 2, wherein a fixing seat is respectively provided on the first column and the second column, the fixing seat includes a first support wall and a second support wall, the first column A support wall and the second support wall are connected to form a support groove for accommodating the microphone board; the first support wall and the microphone board are connected by screws.
The microphone device according to claim 4, wherein the first support wall is inclined relative to the plate surface of the support plate away from the center of the mounting frame by a first preset angle, and the first preset angle It is 30°～45° or 45°～60°.
The microphone device according to claim 4, wherein the fixing seat on the first column further comprises a limit stop arm, the limit stop arm is connected with the first support wall, and the The limit stop arm is located at one end of the first support wall away from the second upright column.
The microphone device according to claim 2, wherein the support plate is snap-connected to the installation frame; or, the support plate and the installation frame are connected by screws.
The microphone device according to claim 1, wherein the microphone plate has a long side and a short side, and the preset angle includes a second preset angle and/or a third preset angle;

The microphone board is inclined relative to the mounting frame by the second preset angle along the longitudinal direction thereof;

And/or, the microphone board is inclined relative to the mounting frame by the third preset angle along the short side direction thereof.
The microphone device according to any one of claims 1-8, wherein the projection extension lines of the three microphone boards on the mounting frame form a triangular structure.
The microphone device according to any one of claims 1-8, characterized in that, the microphone device further comprises an outer casing and a telescopic rod, and the outer casing is formed to accommodate the mounting frame, the support frame and the The accommodating space of the microphone board; the side opposite to the microphone board is provided with a number of sound penetration holes, and the other side of the outer housing is connected with the telescopic rod.