JPH07124195A - Headphone type sound-proof device - Google Patents

Abstract

PURPOSE:To provide a sufficient sound-proof effect and property to withstand long-term use and enable the communication of wearing persons with each other by providing the above device with sound-proof materials which fit tightly to the wall surfaces of the external auditory meatus inlets by making adaptive deformation, ear speakers which utter voices toward the external auditory meatus and a microphone which collects the voices uttered by the wearing persons. CONSTITUTION:The conversation collecting microphone 41 which picks up the conversations of the wearing person is mounted at the front end of a conversation collecting part 30. The sound-proof materials 24 are mounted on the inner side of the cups 21. The sound-proof materials 24 are adaptively deformed according to the wearing person 100 to fit tightly to the walls of the inlet of the external auditory meatus 102 of the wearing person 100. The front ends on the external auditory meatus 102 side of the sound-proof materials 24 are bored with sound conduit holes 25 and are arranged with the ear speakers 26 deep in these holes. The wearing persons are able to make conversation with each other by using the ear speakers 26 arranged in the sound-proof materials 24, the conversation collecting microphones 41, IR antennas 31 and IR communication equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headphone type soundproof device to be mounted in a factory where noise is severe.

[0002]

2. Description of the Related Art For example, in a textile factory, a large number of looms are in operation, and the workers are forced to work in such a large noise that conversations between workers cannot be left.

[0003]

Sound-proof earplugs and the like are used to prevent hearing loss due to the noise and to mitigate mental irritation. However, in order to obtain a sufficient sound-proof effect, the earplug should be used. There is a problem that it is necessary to push it strongly into the ear canal, and many people feel pain in the ear canal. Further, a headphone type soundproofing device that covers the auricle is also conceivable, but there is a problem that unlike the earplugs, the area of the portion that needs to be blocked is large and the soundproofing effect is not sufficient as compared to the earplugs.

Further, since the soundproofing device closes the ears, there is a problem that it is difficult for workers to communicate with each other. In view of the above circumstances, the present invention can withstand a sufficient soundproofing effect and long-term use,
Moreover, it is an object of the present invention to provide a headphone type soundproof device that enables communication between wearers.

[0005]

Means for Solving the Problems The present invention, which achieves the above object, provides a headphone type soundproofing device which is mounted so as to cover the auricle of a wearer. (1) At least the ear canal entrance of the wearer when worn Soundproofing material that adapts to the shape of the earpiece and adheres closely to the wall surface of the ear canal entrance (2) The soundproofing material is attached to the tip facing the ear canal or to the back of a sound guide hole having an opening at the tip. Also, an ear speaker that emits sound toward the ear canal (3) A microphone for collecting the voice of the wearer (4) Transmits the voice information collected by the microphone and is sounded by the ear speaker It is a headphone type soundproof device characterized by comprising a transceiver for receiving voice information.

Here, in the headphone type soundproofing device of the present invention, further, (5) a sound pickup microphone for picking up ambient noise (6) a wearer based on the noise picked up by the sound pickup microphone It is preferable to have a configuration including an active noise controller for controlling the sound emitted from the ear speaker so as to cancel the noise heard in the above.

Here, as the material of the soundproof material, for example, silicon can be preferably used, or as the soundproof material, a liquid or gel-like body and a film body enclosing the liquid or gel-like body can be used. The soundproofing material is also suitable.
Further, in the above-mentioned present invention, a microphone for picking up the bone-conducted sound of the wearer may be provided as the pickup microphone.

[0008]

Since the headphone type soundproofing device of the present invention is a headphone type soundproofing device, it covers the auricle, and thereby a soundproofing effect equivalent to that of the conventional headphone type soundproofing device can be obtained. Further, since the present invention includes a soundproof material that adaptively deforms and adheres to the wall surface of the ear canal entrance, this soundproof material can also obtain a soundproof effect equivalent to that of a conventional earplug, if necessary. Considering that it is also a headphone type soundproofing device, you may sacrifice the soundproofing effect to some extent, and the amount of that sacrifice can suppress the pressure on the ear canal, improve the fit, and suppress the inflammation of the ear canal. . Further, since the headphone type soundproofing device of the present invention is provided with the above-mentioned microphone for collecting voice, the above-mentioned ear speaker, and the transmitter / receiver for conversation between the wearers, the wearers can communicate with each other.

Further, in the present invention, if the sound pickup microphone and the active noise controller are provided, noise can be further reduced.

[0010]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a schematic view showing a cross section of a part of a headphone type soundproofing device according to an embodiment of the present invention. This headphone type soundproofing device 10 includes two cup parts 20, 20 which are mounted on the left and right ears so as to cover the auricle, and a head part 30 which connects the two cup parts via the wearer's head. The voice collecting section 40 extends from one cup section 20 to the wearer's mouth, and the circuit section 60 connected by an electric wire 50. Details of the cup section 20 and the circuit section 60 will be described later.

An infrared antenna 31 for transmitting and receiving signals to and from an infrared transmitter / receiver mounted on a ceiling or the like in a factory is mounted on the top of the head portion 30. In addition, the collection section 3
At the tip of 0, a pickup microphone 41 for picking up the conversation of the wearer is attached. FIG. 2 is a sectional view of the cup portion 20.

The cup portion 20 is provided with a cup 21 which is mounted so as to cover the auricle 101 of the wearer 100, and a portion corresponding to the wearer 100 enhances a fit to the wearer and is soundproof. An elastic body 22 made of silicon rubber or the like is attached so as to have an effect.
Although illustration is omitted, it goes without saying that a known material is used for the cup 21 itself in order to enhance the soundproof effect, and various known devices are made.

The cup 21 is also provided with a sound pickup microphone 23 for picking up external noise. The sound pickup microphone does not need to be attached to the outside of the cup 21 as shown in the drawing, and may be provided inside the cup 21 as necessary so as to pick up noise leaking to the inside of the cup 21. It may be. A soundproof material 24 made of, for example, silicone rubber is attached to the inside of the cup 21. The soundproof material 24 is adaptively deformed according to the wearer 100, and comes into close contact with the wall of the entrance of the ear canal 102 of the wearer 100. In addition, this soundproof material 24
A sound guide hole 25 is formed at the tip of the ear canal 102 side, and an ear speaker 26 is arranged in the back of the sound guide hole 25.

Since the soundproof material 24 blocks the entrance of the ear canal, it is possible to obtain the same soundproof effect as that of a conventional earplug only by the ear canal. In addition, the ear speaker 26 disposed on the soundproof material 24 and the pickup microphone 4
1 (see FIG. 1), the infrared antenna 31, and the infrared communication equipment (not shown) mounted on the ceiling of a factory or the like, allows the wearers to talk with each other. In addition, the ear speaker 26, together with the sound pickup microphone 23,
It also plays a role as an active noise controller.

Although omitted in FIGS. 1 and 2,
Needless to say, the ear speaker 26, the sound pickup microphone 23, the infrared antenna 31, the pick-up microphone 41, and the circuit section 60 are wired as necessary. FIG. 3 is a circuit block diagram showing the configuration of the circuit unit 60. The noise picked up by the pickup microphone 23 is
The digital signal is converted by the A / D converter 61 and input to the filter 62. The filter 62 has its phase inverted so as to cancel the noise reaching the external ear canal in consideration of the transfer characteristic until the external noise is attenuated via the cup 21 and the soundproof material 24 while being attenuated. A filter that produces a signal. The characteristics of the filter 62 may be fixedly adjusted to the average characteristics thereof in advance, ignoring differences such as variations in characteristics of a large number of wearers or a large number of headphone type soundproofing devices 10 of the same type.
Alternatively, for example, an adjustment knob (not shown) may be attached to the circuit section 60, and the wearer may rotate the knob to perform adjustment so that noise is minimized.

The output of the filter 62 is converted into an analog signal by the D / A converter 63, added by the adder 64 with the audio signal received by the infrared antenna 31, and appropriately amplified by the amplifier 65 to be amplified by the ear speaker 2.
Sound is emitted from 6. By installing such an active noise controller, it is possible to further reduce the noise heard by the wearer as compared with a passive soundproofing device that simply covers the auricle or blocks the external auditory meatus.

Although the soundproof material 24 is made of silicone rubber in the above-mentioned embodiment, it may be replaced by a material having a structure in which, for example, physiological saline or gel-like silicon is sealed with a silicon film. . Further, in the above-described embodiment, the voice collecting unit 40 extending to the wearer's mouth is provided. Instead of such a voice collecting unit, for example, a bone-conducted sound is picked up on the side of the head unit 30 in contact with the wearer. A microphone for collecting voice may be provided. In this case, the pickup microphone is less likely to pick up ambient noise, and more clear voice can be transmitted and received.

[0018]

As described above, according to the present invention,
Further soundproofing effect can be obtained by both the conventional soundproofing device as earplug and the conventional headphone type soundproofing device, and part of the soundproofing effect can reduce inflammation caused by conventional earplugs. It can also be used for communication, and the wearers can communicate with each other.

[Brief description of drawings]

FIG. 1 is a schematic view showing a cross section of a part of a headphone type soundproofing device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a cup portion 20.

FIG. 3 is a circuit block diagram showing a configuration of a circuit section 60.

[Explanation of symbols]

 10 Headphone-type Soundproofing Device 20 Cup Part 21 Cup 22 Elastic Body 23 Sound Pickup Microphone 24 Soundproofing Material 25 Sound Guide Hole 26 Ear Speaker 30 Head Part 31 Infrared Antenna 40 Speech Talking Part 41 Speech Talking Microphone 60 Circuit Part

Claims (5)

[Claims] 1. A headphone type soundproofing device to be worn so as to cover a pinna of a wearer, when the wearer wears it, it is adaptively deformed to fit at least the shape of the ear canal entrance of the wearer. A soundproof material that adheres to the wall surface of the earpiece, an ear speaker that emits sound toward the external ear canal, attached to the tip of the soundproof material that faces the external ear canal, or behind a sound guide hole that has an opening at the tip. A headphone type characterized by comprising a pickup microphone for collecting utterances, and a transceiver for transmitting voice information collected by the pickup microphone and receiving voice information produced by the ear speaker Soundproofing device. 2. A sound pickup microphone for picking up ambient noise, and a sound emitted from the ear speaker so as to cancel the noise heard by the wearer based on the noise picked up by the sound pickup microphone. The headphone type soundproofing device according to claim 1, further comprising an active noise controller for controlling the. 3. The headphone type soundproof device according to claim 1, wherein the soundproof material is made of silicon. 4. The headphone type soundproof device according to claim 1, wherein the soundproof material is composed of a liquid or gel-like body and a film body enclosing the liquid or gel-like body. 5. The headphone type soundproof device according to claim 1, wherein the pickup microphone picks up bone-conducted sound of the wearer.