CN215453202U

CN215453202U - Microphone subassembly and camera

Info

Publication number: CN215453202U
Application number: CN202121457722.1U
Authority: CN
Inventors: 姜鹏基; 熊峰
Original assignee: Insta360 Innovation Technology Co Ltd
Current assignee: Insta360 Innovation Technology Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-07
Anticipated expiration: 2031-06-29
Also published as: WO2023273963A1

Abstract

The utility model discloses a microphone assembly which comprises a shell and a microphone positioned in the shell, wherein a sound inlet hole is formed in the shell, a noise reduction channel is arranged on the outer side surface of the shell of the sound inlet hole, and a noise reduction surface for changing the direction of air flow is arranged on the noise reduction channel. Compared with the prior art, the microphone assembly or the camera disclosed by the utility model has the advantages that the noise reduction channel with the horn-shaped cross section is arranged at one end of the sound inlet hole outside the shell, so that air flow blowing to the sound inlet hole can be effectively dispersed, and excessive air flow is prevented from whirling at the sound inlet to form whirlwind, so that the whistle noise is reduced.

Description

Microphone subassembly and camera

Technical Field

The utility model relates to the technical field of microphone products, in particular to a microphone assembly with low wind noise and a camera.

Background

With the development of electronic technology, the use of some electronic devices with sound pickup apparatuses, such as motion cameras, has become more and more popular, and microphones as sound pickup apparatuses are inevitably mounted in these electronic products.

The motion cameras are mostly used in motion scenes such as walking, mountain climbing, rock climbing, racing and the like, and the influence of wind sound on the sound quality of the microphone is particularly prominent. As shown in fig. 1, a sound inlet hole of a microphone of an existing motion camera is a long and narrow hole formed in a housing, and when the motion camera is in a high-speed motion state, especially when an air flow direction generated by motion of the camera and a plane of the sound inlet hole of the microphone form an angle of 15-45 degrees, the air flow enters the sound inlet hole and whirlwind is generated, so that whistling noise is easily generated, and the sound pickup quality of the motion camera is further affected.

Therefore, there is a need for improvements to existing microphones.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the drawbacks of the prior art, and provides a microphone assembly and a camera with low wind noise to reduce the wind noise in motion.

The technical solution of the microphone assembly disclosed in an embodiment of the present invention is as follows:

a microphone assembly comprises a shell and a microphone located in the shell, wherein a sound inlet hole is formed in the shell, a noise reduction channel is formed in the outer side surface of the sound inlet hole, and a noise reduction surface for changing the direction of air flow is formed in the noise reduction channel.

Further, the cross section of the noise reduction channel in the embodiment is trumpet-shaped or inverted triangle-shaped.

Further, the noise reduction surface in this embodiment is a concave surface, an inclined surface, or a convex surface, so that the direction of the airflow blowing toward the sound inlet hole is changed, and wind noise is prevented from being formed in the sound inlet hole.

Further, the sound inlet hole in this embodiment further includes a sound inlet passage, one end of which communicates with the noise reduction passage and the other end of which communicates with the inner side surface of the casing, so that sound outside the casing can be transmitted from the noise reduction passage to the microphone through the sound inlet passage.

Further, in order to avoid the microphone from being filled with water, in the optimized scheme of the embodiment, a waterproof breathable film can be further arranged between the microphone and the sound inlet hole.

Furthermore, in order to prevent the microphone from shaking and protect the microphone, foam can be wrapped around the microphone.

In an embodiment of the present invention, a camera includes a camera housing and a microphone assembly mounted on the camera housing, where the microphone assembly is any one of the microphone assemblies described above.

The utility model also discloses another camera, which comprises a camera shell and a microphone arranged in the camera shell, wherein the shell is provided with a sound inlet hole, the sound inlet hole is provided with a noise reduction channel on the outer side surface of the shell, and the noise reduction channel is provided with a noise reduction surface for changing the direction of air flow.

Furthermore, the surface of the noise reduction channel in this embodiment is a concave surface, an inclined surface, or a convex surface, so that the direction of wind blowing toward the sound inlet hole is changed, and wind noise formed in the sound inlet hole is avoided.

Compared with the prior art, the microphone assembly or the camera disclosed by the utility model has the advantages that the noise reduction channel with the horn-shaped cross section is arranged at one end of the sound inlet hole outside the shell, so that air flow blowing to the sound inlet hole can be effectively dispersed, and excessive air flow is prevented from whirling at the sound inlet to form whirlwind, so that the whistle noise is reduced.

Drawings

Fig. 1 is a schematic diagram of a conventional microphone assembly.

Fig. 2 is a schematic diagram of a microphone assembly in embodiment 1.

Fig. 3 is a schematic diagram of a microphone assembly in embodiment 2.

Fig. 4 is a schematic diagram of a microphone assembly in embodiment 3.

Fig. 5 is a schematic view of a camera in embodiment 4.

Fig. 6 is a schematic view of a camera in embodiment 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The utility model will be further explained in detail with reference to the drawings and the specific embodiments.

Example 1

As shown in fig. 2, the microphone assembly 10 in the present embodiment includes a case 1, a microphone 2, a waterproof breathable film 3, and a foam 4.

The casing 1 is provided with sound inlet holes (not shown) which are formed by a noise reduction passage 11 and a sound inlet passage 12. The noise reduction channel 11 is arranged on the outer side surface of the shell 1, the noise reduction channel 11 is provided with a noise reduction surface 11a, and the noise reduction surface 11a in the embodiment is concave, so that the cross section of the noise reduction channel 11 is approximately bowl-shaped; one end of the sound inlet passage 12 communicates with the noise reduction passage 11 and the other end communicates with the inner side surface of the housing 1, so that sound outside the housing 1 can be transmitted from the noise reduction passage 11 to the microphone 2 through the sound inlet passage 12.

The microphone 2 is located on the inner side surface of the housing 1 in the vicinity of the sound inlet passage 12 for receiving sound outside the housing 1.

The waterproof breathable film 3 is positioned between the sound inlet channel 12 and the microphone 2, is used for preventing water and water vapor outside the shell 1 from entering the microphone 2, and also has a certain dustproof effect.

The foam 4 is wrapped around the microphone 2 for fixing and protecting the microphone 2.

As shown by arrows in fig. 2, when the external air flow blows obliquely toward the sound inlet hole, the noise reduction surface 11a may diffuse the air flow, so that the air flow flowing toward the sound inlet passage 12 is greatly reduced, thereby preventing or reducing the formation of whirlwind in the sound inlet passage 12, and thus preventing the generation of wind noise or reducing the wind noise.

Example 2

As shown in fig. 3, the present embodiment discloses another microphone assembly. The microphone assembly 10 in this embodiment is substantially the same as that in embodiment 1, and therefore, the description thereof is omitted, except that: the noise reduction surface 11a in this embodiment is an inclined surface such that the cross-section of the noise reduction passage 11 is substantially in the shape of an inverted triangle.

As shown by arrows in fig. 3, when the external air flow blows obliquely toward the sound inlet hole, the noise reduction surface 11a allows the air flow to the outside of the casing 1, thereby preventing the formation of a cyclone in the sound inlet passage 12 and thus preventing the generation of wind noise.

Example 3

As shown in fig. 4, the present embodiment discloses another microphone assembly. The microphone assembly 10 in this embodiment is substantially the same as that in embodiment 1, and therefore, the description thereof is omitted, except that: the noise reduction surface 11a in this embodiment is in the drawing so that the cross-section of the noise reduction channel 11 is substantially trumpet-shaped.

As shown by arrows in fig. 4, when the external air flow blows obliquely toward the sound inlet hole, the noise reduction surface 11a may diffuse the air flow, so that the air flow flowing toward the sound inlet passage 12 is greatly reduced, and further, the formation of whirlwind in the sound inlet passage 12 is prevented or reduced, and thus, the generation of wind noise or the reduction of wind noise may be prevented.

Example 4

As shown in fig. 5, the present embodiment discloses a camera 100, which includes a microphone assembly 10 and a camera housing 20, wherein the microphone assembly 10 is mounted on the camera housing 20, and the microphone assembly 10 is the microphone assembly described in embodiment 1, embodiment 2 or embodiment 3. The microphone assembly 10 of this embodiment as a whole may be mounted or removed from the camera to facilitate maintenance of the camera 100, such as when the microphone assembly fails, it may be replaced with another microphone assembly without requiring replacement or repair of the camera 100.

As will be appreciated by those skilled in the art, the microphone assembly 10 of the present embodiment can transmit the picked-up audio data to the camera 100 via bluetooth.

Example 5

As shown in fig. 6, the present embodiment discloses another camera, and the sound inlet channel of the camera 100 in the present embodiment is substantially the same as the sound inlet channel of the microphone assembly in embodiment 1, embodiment 2 or embodiment 3, that is, the camera housing 1 in the present embodiment is the housing of the microphone assembly in embodiment 1, embodiment 2 or embodiment 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A microphone assembly comprises a shell and a microphone positioned in the shell, and is characterized in that a sound inlet hole is formed in the shell, a noise reduction channel is arranged on the outer side surface of the shell of the sound inlet hole, and a noise reduction surface for changing the direction of air flow is arranged on the noise reduction channel.

2. The microphone assembly of claim 1, wherein the noise reduction channel has a cross-section in the shape of a bowl, an inverted triangle, or a horn.

3. The microphone assembly of claim 1, wherein the noise-reducing surface is concave, beveled, or convex.

4. The microphone assembly of claim 1, wherein the sound inlet hole further comprises a sound inlet channel, one end of the sound inlet channel being in communication with the noise reduction channel, and the other end being in communication with an inner side surface of the housing.

5. The microphone assembly of claim 1 wherein a waterproof, breathable membrane is disposed between the microphone and the sound inlet hole.

6. The microphone assembly of claim 1 wherein the microphone is wrapped with foam.

7. A camera comprising a camera housing and a microphone assembly mounted on the camera housing, wherein the microphone assembly is as claimed in any one of claims 1 to 6.

8. A camera comprises a camera shell and a microphone arranged in the camera shell, and is characterized in that a sound inlet hole is formed in the camera shell, a noise reduction channel is arranged on the outer side surface of the sound inlet hole, and a noise reduction surface for changing the direction of air flow is arranged on the noise reduction channel.

9. The camera of claim 8, wherein the noise reduction channel is flared in cross-section.

10. The camera of claim 8, wherein the surface of the noise reduction channel is concave, sloped, or convex.