JP3056722B1 - Microphone device - Google Patents

Abstract

A microphone device having a built-in bidirectional microphone is provided, the area of the front part of the device body is kept small, the compactness of the whole device is ensured, and the bidirectionality of the microphone is improved. The purpose is to not impair the function. SOLUTION: A bidirectional microphone 2 is provided in a main body casing 3 in such a manner that a voice sensing surface 4 and a noise canceling surface 5 extend from a front part to a rear part of the casing main body, and are arranged inside the main body casing 3. In the front part 9, a through hole 11 for taking in sound is opened, and sound passages 18 and 19 are respectively formed from the through hole 11 to the sound sensing surface 4 and the noise canceling surface 5 of the built-in microphone 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone device incorporating a bidirectional microphone in a main body casing, and more particularly to a structure for incorporating a microphone main body in a main body casing.

[0001]

THE INVENTION TECHNICAL FIELD] The present invention, and the voice sensing surface Roh
The present invention relates to a microphone device that incorporates a bidirectional microphone in which a noise canceling surface is disposed in a state of facing each other in a main body casing, and particularly relates to a structure for disposing a microphone main body in a main body casing.

A microphone device having a built-in bidirectional microphone is conventionally provided with a through hole for allowing a sound to pass through a sound sensing surface of the microphone in a main body casing and a sound to pass through a sensing surface of a noise canceling sound. Two of the through holes were opened.

[0004]

Today, there is a strong demand for devices that are light, thin, small, and multifunctional. That is, in the microphone device with a built-in bi-directional microphone, it front the size of the apparatus main body have compact is required the smaller is desirable.

[0005] On the other hand, the front surface, which is the front portion of the main body of the apparatus , requires a large area due to the provision of operation switches and the like, so that it is difficult to make the front surface compact. In particular, in order to capture sound more faithfully, the larger the size of the sound sensing surface of the microphone , the better. However, in that case, the area occupied by the microphone body occupying the front surface becomes larger, and the problem becomes more serious.

Accordingly, a bidirectional microphone is provided in the main body casing such that its voice sensing surface and noise canceling surface extend from the front to the back of the main body casing, and the microphone is provided on the front surface of the main body casing. A first through-hole for taking in sound is opened, and a second through-hole for taking in noise canceling sound in a portion of the main body casing located near the noise canceling surface of the built-in microphone. A configuration in which a through hole is opened is conceivable.

However, in this configuration, for example, when the second through-hole is opened on the upper surface of the main body casing, the through-hole is clogged by dust, and as a result, noise canceling sound cannot be taken in. Problems arise.

In the case where the second through-hole is formed on the side or the back of the casing of the main body , the through-hole is closed with a finger when the user grips the main body of the apparatus , so that a noise canceling function can be obtained. There is a problem that there is no.

Further, when the second through-hole is formed in the bottom surface of the main body casing, when the apparatus main body is placed and used, the through-hole is similarly closed by the object to be mounted, so that the noise canceling function is provided. Is not obtained.

[0010] The present invention has been made in view of the above circumstances, it is possible to reduce the area of the front surface of the main body casing constituting the apparatus body, the main body
The present invention provides a microphone device that ensures noise cancellation of a microphone housed and held in a casing .

[0011]

According to the present invention, a bidirectional microphone is provided in a main body casing such that a voice sensing surface and a noise canceling surface extend from a front portion to a back portion of the main body casing. A microphone device provided with two voice passages formed from the only through hole provided in the casing to the two surfaces.

Its detailed configuration is to convert voice to electric signal
The sound sensing surface that senses sound waves and the sound sensing surface
Noise cancellation to cancel noise
A bidirectional microphone arranged with the surfaces facing away from each other <br/> and the microphone is stored and held , and the back is
To the microphone that is stored and held in the direction of
The only main casing through holes are formed is provided for, the microphone is in the body casing, so that voice sensing surface and the noise canceling surface is posture extending in the direction of the back from the front of the main casing Arranged,
In addition, it extends from the through-hole and branches into two
Speech sensing surface of the held microphone and noise canceling
From the front of the main unit casing through each to the ring surface
Is a microphone device in which two voice paths for transmitting the voice are formed.

In the microphone device having such a configuration , sound from the front of the main body casing is transmitted to the microphone main body.
However, the microphone is installed in the main body casing with the microphone's voice sensing surface and noise canceling surface extending from the front to the back of the main body casing, so that the microphone has a voice sensing surface and noise. Even if the area of the canceling surface is large, the sound sensing surface does not increase the area of the front part of the casing.

Further, since only one through hole is provided in the main body case for taking in the sound to the microphone side , a sound for noise canceling is provided as compared with the case where the second through hole is opened. Can be reliably obtained.

[0015]

Embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited by this embodiment.

The microphone device 1 includes a microphone 2
And a main body casing 3. The microphone 2 converts sound into an electric signal, and a sound sensing surface 4 for sensing sound and a noise canceling surface 5 for canceling noise sensed by the sound sensing surface 4 are arranged in a state where they face each other. This is a bidirectional microphone.

The main casing 3 is composed of a front casing 6 and a rear casing 7, and a waterproof packing 8 is interposed between the two casings. Front casing 6
, Together with the operation unit 10 on the front surface 9 is arranged, through hole 11 for the passage of sound to the microphone 2 is the body
It is opened toward the back of the casing 3 , and further,
A speaker grill 12 is formed. In addition, 13 is a waterproof sheet, 14 is a speaker, and 15 is a wiring board.

The microphone 2 is in a horizontal position such that the voice sensing surface 4 and the noise canceling surface 5 extend from the front part 9 to the back part 16 of the main body casing 3.
It is provided in the main body casing 3. In addition, 17
The holder is made of an elastic body and holds the microphone 2 at a predetermined position with respect to the main body casing 3.

The microphone device 1 is further provided with two audio paths 18 communicating from the through holes 11 to the audio sensing surface 4 and the noise canceling surface 5 of the microphone 2 provided therein.
And 19 are formed.

The microphone device 1 is configured as described above. Hereinafter, the main part of the microphone device 1 will be described.

The microphone device 1 includes a microphone 2
The sound sensing surface 4 and the noise canceling surface 5 are provided in the main body casing 3 in a horizontal posture in which they extend in the direction from the front portion 9 to the back portion 16 of the main body casing 3. Therefore, the microphone 2 is connected to the voice sensing surface 4 and the noise canceling surface 5.
Is large, the voice sensing surface 4 does not increase the area of the front portion 9 of the casing 3, so that the area of the front portion 9 of the main casing 3 does not largely dominate. Since the area of the front part 9 of 3 is not increased, the size of the apparatus itself can be reduced.

[0022] On the other hand, the microphone unit 1, through hole 11 for taking the voice to the microphone 2 is front casing
The only one is opened at the front of 6 to extend to the back, and the through hole 1
Two audio passages 18 and 19 are formed from 1 to the audio sensing surface 4 and the noise canceling surface 5 of the microphone 2. Therefore, even if only one through hole 11 is opened, the sound is transmitted to the sound sensing surface 4 of the microphone 2.
And give reached noise canceling surface 5, together with the bi-directional microphone 2 is secured, a microphone
2 rotates mainly by detecting the sound from the front of the casing 3
It is said that it is difficult to pick up noise from
The effect has been obtained.

When a second through-hole for taking in sound exclusively for noise canceling is to be opened, the second through-hole is closed by a user's grip or dust to obtain a noise canceling function. Is not possible,
In the microphone device 1, such a problem does not occur.

Similarly, since the microphone device 1 does not have the second through-hole, it is easy to manufacture, and the
There is no need to consider dust prevention.

The microphone device 1 has a through hole 11 in the front part 9.
Although the operation unit 10 and the speaker grill 12 are provided in addition to the above, a configuration in which a display unit, an input unit, and the like are provided in addition to the above may be employed.

Although the microphone device 1 is provided with a cable for signal transmission, a so-called wireless configuration without a cable may be used.

In the microphone device 1, the microphone 2 is arranged such that the voice sensing surface 4 is on the bottom surface and the noise canceling surface 5 is on the top surface, but the voice sensing surface 4 is on the top surface and the noise canceling surface 5 is on the bottom surface. A configuration in which the microphone 2 is disposed so that

In the microphone device 1, the shape of the two audio passages 18 and 19 is desirably appropriately selected according to the characteristics of the sound to be received, other members provided in the main body casing 3, the shape of the holder 17, and the like. .

[0029]

The present invention provides a bidirectional microphone,
The sound sensing surface and the noise canceling surface are disposed in the main body casing so as to extend from the front to the back of the main body casing, and a through hole for transmitting sound to the microphone is provided in the front of the main body casing . Two sound paths that respectively extend from the through holes to the sound sensing surface and the noise canceling surface of the microphone built in the main body casing. , to effectively use the front surface of the main body casing with compact overall device by Rukoto can be reduced front area of the main body casing can be secured
It has a high dustproof and waterproof function.
Te, Roh since never bi-directional function is impaired
The is canceling function is not impaired,
Is a microphone receiver that is easy to manufacture .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a main part configuration showing a configuration of a main part according to an embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment shown in FIG.

FIG. 3 is a sectional view of FIG. 2;

[Explanation of symbols]

 1: microphone device 2: microphone 3: main body casing 4: voice sensing surface 5: noise canceling surface 9: front part of main body casing 11: through hole 17: holder 18: voice passage 19: voice passage

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04R 1/40 320 H04M 1/02-1/23

Claims (1)

(57) [Claims] 1. A method for converting a sound into an electric signal and detecting a sound wave.
And the noise perceived by the voice sensing surface
Noise canceling surfaces for canceling are facing each other.
A bi-directional microphones arranged are formed by state, housed holds the microphone, yield extends in the direction of back to front
The only through hole for sending sound to the stored microphone
There provided with formed body casing, the microphone in the main body casing, the sound sensing surface and the noise canceling surface is arranged such that the posture extending in the direction of the back from the front of the main body casing, 且
, Extending from the above through hole, branching into two from the middle and storing and holding
Surface and noise canceller of the microphone
From the front of the main body casing
A microphone device in which two voice paths for transmitting voice are formed.