JP2000349882A - Leaked sound prevention device for portable phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent surrounding people from causing troubles and contents of a speech from being heard by other people because a speech voice is leaked to surrounding in a conventional portable phone. SOLUTION: The leaked sound prevention device for portable phone of this invention consisting of a mouth piece 1 that is neatly fitted to a mouth of a talker, a soundproof tube 2 connected to the mouth piece 1, an externally mount sound collection microphone 3 placed inside the soundproof tube 2 and a silencing exhaust port 4 that is connected behind the soundproof tube 2 and with a sound absorbing material adhered in the inside, is characterized in that a speech by the portable phone can be made without leaking a speech voice externally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leak preventing device for portable telephones, which prevents a sound of a portable telephone from leaking to the surroundings.

[0002]

2. Description of the Related Art In a conventional mobile phone, voice during a call is
It was leaking around. For this reason, the only effective way to prevent the voice from leaking around is to put your hand around the mouth and talk on the phone, and this method has not been able to sufficiently eliminate the leaked sound.

[0003]

For this reason, if a mobile phone is used in a place where an unspecified number of people are present, the voice leaks to the surroundings, giving discomfort to the surrounding people.
In addition, there is a possibility that the contents of the call may be known to others. Furthermore, in places where the surrounding noise is high, speech and surrounding noise are mixed, and the call itself may be inconvenient. The present invention has been made to eliminate these disadvantages.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a leak preventing apparatus for a portable telephone, comprising: a tubular contact portion (1) made of a shape and material capable of covering the periphery of a talker's mouth without gaps; A cylindrical soundproof tube (2) made of a member having a sound insulating and sound absorbing effect connected to the mouthpiece (1), and an external sound collecting microphone (3) installed inside the soundproof tube (2); A sound absorbing material is attached to the inside connected to the back of the soundproof tube (2). The sound absorbing material is constituted by a maze-shaped or cylindrical shape or a cylindrical sound-absorbing exhaust port (4) having a sound insulating and sound absorbing effect. . When a call is made by using this device during a mobile phone call and the speaker puts the mouthpiece (1) around the mouth so as to cover the mouth and the call is made, the voice of the call is collected externally through the soundproof tube (2). The sound is collected by the sound microphone (3) and further flows to the muffler exhaust port (4) with exhalation.
The sound pressure level is reduced by the sound absorbing material installed in the sound deadening exhaust port, so that the sound level is reduced to a level equal to or lower than the surrounding background noise, and the sound is reduced or reduced and discharged to the outside. The call voice is converted into an electric signal by the external sound collecting microphone (3), sent to the main body of the mobile phone by a cable or wireless method, and transmitted to a base station or the like. The present invention is a mobile phone leakage sound prevention device having the above-described configuration.

[0005]

Embodiments of the present invention will be described below. The mobile phone leakage sound prevention device having the above-described configuration according to claim 1 is connected to the mobile phone main body, and the other party's voice is heard from the speaker of the mobile phone main body, and this voice is output from the mobile phone main body. The microphone is switched without using the microphone, and the sound is transmitted from the external sound collecting microphone (3) installed inside the leak sound preventing apparatus for mobile phones of the present invention. If a call is made in such a configuration, a clear conversation can be made without sound leaking to the surroundings. At this time, a directional microphone may be used for the external sound collecting microphone (3) so that the reflected sound or the like in the soundproof tube (2) does not enter. In addition, instead of using the external sound collecting microphone (3), a soundproof tube (3) is attached so as to cover the microphone part (6) of the mobile phone body (5). The mouthpiece (1) may be connected to one end of the tube, and the silencer exhaust port (4) may be connected to the other end, so that the tube may be used as a leakage noise prevention device.

[0006]

According to the first aspect of the present invention, if the user uses the leak sound preventing device for a portable telephone and puts his / her mouth on the mouth portion (1) to make a call, the user can talk without leaking his / her own voice. Calls can be made without disturbing the people around them, and the contents of the calls will not be known to others, so that the area where the mobile phone can be used is greatly expanded, and it is also useful to prevent troubles to the surroundings. In addition, even in a place with high background noise, noise from the surroundings can be eliminated and only the call voice can be transmitted to the external microphone (3), so that the transmitted / received voice of the mobile phone becomes clear. The same effect can be obtained even if the leak sound preventing device for a mobile phone according to the second aspect is used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a leakage sound prevention apparatus for a mobile phone according to the first embodiment of the present invention.

FIG. 2 is a perspective view of the leakage sound prevention device for a mobile phone according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact part 2 Soundproof tube 3 External sound collecting microphone 4 Silence exhaust port 5 Mobile phone body 6 Microphone part

Claims (2)

[Claims] 1. A mouthpiece (1), a soundproof tube (2) connected to the mouthpiece, an external sound collecting microphone (3) installed inside the soundproof tube (2), and a soundproof tube (2). A leak sound preventing device for a mobile phone, comprising a silencing exhaust unit (4) having a sound absorbing material mounted inside connected to the rear of the portable telephone. 2. A soundproof tube (2) that can be attached so as to cover the mouthpiece (1) and the microphone part (6) of the mobile phone body (5), and a sound absorbing material is mounted inside the soundproof tube (2) connected to the back thereof. A leakage sound prevention device for a mobile phone comprising a silencer exhaust part (4).