JPH067397A - Soundproof ear cover - Google Patents
Soundproof ear coverInfo
- Publication number
- JPH067397A JPH067397A JP4191395A JP19139592A JPH067397A JP H067397 A JPH067397 A JP H067397A JP 4191395 A JP4191395 A JP 4191395A JP 19139592 A JP19139592 A JP 19139592A JP H067397 A JPH067397 A JP H067397A
- Authority
- JP
- Japan
- Prior art keywords
- soundproof
- speaker
- microphone
- ear cover
- soundproof ear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、従来公知の防音耳覆い
の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a conventionally known soundproof earmuff.
【０００２】[0002]
【従来の技術】空港などの騒音の激しい場所で働く人
は、従来から、騒音からくる不快感、騒音から生じる聴
覚器官の機能障害（難聴など）を避けるために防音耳覆
いを用いているが、従来公知の防音耳覆いは、単にカッ
プ状外被の内側に吸音材又は遮音材などの防音材を内装
しただけのものであるため、騒音防止には有効である
が、その装着時における会話が困難であるという問題が
ある。また、騒音の音域は人間の耳に聞える約２０〜２
００００Hzの範囲にわたるのに対し、会話音声の大部分
が約５００〜２０００Hzの音域内にあること、及び高音
域の音が特に聴覚器官に害があることに着目し、約５０
０〜２０００Hzの音域外にある音波のみを選択的により
大きく減衰させることの出来る減衰特性をもつ防音材を
利用して、騒音を防止しながら会話も容易に出来るよう
にしようとした防音耳覆いも従来公知である。しかしな
がら、このものは、十分な効果が得られないばかりでな
く性能も安定しないという欠点がある。2. Description of the Related Art Conventionally, a person working in a noisy place such as an airport has used a soundproof earmuff in order to avoid discomfort caused by noise and functional impairment of hearing organs (such as hearing loss) caused by noise. However, the conventionally known soundproof ear covers are effective in preventing noise because the sound absorbing material such as the sound absorbing material or the sound insulating material is simply provided inside the cup-shaped outer cover, but the conversation during the wearing There is a problem that is difficult. In addition, the range of noise is about 20 to 2 that can be heard by the human ear.
Focusing on the fact that the majority of conversational voice is in the range of about 500 to 2000 Hz, and that the sound in the high range is particularly harmful to the auditory organ, over the range of 0000 Hz.
A soundproof earmuff that tries to facilitate conversation while preventing noise by using a soundproofing material that has a damping property that can selectively attenuate only sound waves outside the range of 0 to 2000 Hz. It is conventionally known. However, this one has the drawback that not only a sufficient effect cannot be obtained, but also the performance is not stable.
【０００３】[0003]
【発明が解決しようとする課題】騒音を効果的に遮断し
ながら、会話も容易に出来る防音耳覆いを提供すること
にある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a soundproof earmuff that can easily talk while effectively blocking noise.
【０００４】[0004]
【課題を解決するための手段】周囲音波を電気信号に変
換するマイクロホンを防音耳覆いの適所に、スピーカー
を防音耳覆いの内側に設けると共に、マイクロホンから
送出される電気信号を該電気信号のうちの会話音声信号
の主要部のみを通過増幅させるフイルター回路を通して
スピーカーに供給する音声伝達回路を設けた構成。A microphone for converting ambient sound waves into an electric signal is provided in a proper place of the soundproof ear covering, a speaker is provided inside the soundproof ear covering, and an electric signal sent from the microphone is included in the electric signal. The voice transmission circuit that supplies to the speaker through the filter circuit that passes and amplifies only the main part of the conversation voice signal.
【０００５】[0005]
【実施例】図１は、本発明に係る防音耳覆いの一実施例
の要部切断正面図である。図中、１は防音耳覆いのカッ
プ状外被である。カップ状外被１の内側には吸音材又は
遮音材などからなる防音材層２が内装され、そしてその
周端縁には環状のクッション当接体３が取付けられてい
る。また防音耳覆いには、防音耳覆いの内側に設けたス
ピーカー４と、カップ状外被１と防音材層２との間に設
けられたマイクロホン５及び電源電池６と、マイクロホ
ンから送出される電気信号の中の会話音声信号のみを出
来るだけ選択増幅してスピーカーに供給するフイルター
回路を有する音声伝達回路７とからなる音声伝達装置が
設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cutaway front view of an essential part of an embodiment of a soundproof ear covering according to the present invention. In the figure, reference numeral 1 is a cup-shaped outer cover of a soundproof ear covering. A soundproof material layer 2 made of a sound absorbing material or a sound insulating material is provided inside the cup-shaped outer cover 1, and an annular cushion abutting body 3 is attached to the peripheral edge thereof. Further, the soundproof ear covers include a speaker 4 provided inside the soundproof ear covers, a microphone 5 and a power supply battery 6 provided between the cup-shaped jacket 1 and the soundproof material layer 2, and electricity sent from the microphones. A voice transmission device comprising a voice transmission circuit 7 having a filter circuit which selectively amplifies only the conversation voice signal in the signal and supplies it to the speaker.
【０００６】図３は、本発明に係る音声伝達回路７の一
実施例を示す。図中、Ａ部分はマイクロホンの音信号増
幅回路、Ｂ部分は約５００Hz以下の低周波音を除去する
フイルター回路部分、Ｃ部分は約２０００Hz以上の高周
波音を除去するフイルター回路部分、Ｄ部分はスピーカ
ー駆動用の増幅回路である。FIG. 3 shows an embodiment of the voice transmission circuit 7 according to the present invention. In the figure, A part is a sound signal amplification circuit of a microphone, B part is a filter circuit part for removing low frequency sound of about 500 Hz or less, C part is a filter circuit part for removing high frequency sound of about 2000 Hz or more, and D part is a speaker. It is an amplifier circuit for driving.
【０００７】以上の構成であるので、上記防音耳覆いの
使用に際して、その使用者は、防音耳覆いの防音効果と
は関係なく、その音声伝達装置を通して適度に調整され
た大きさの会話音声を聞くことができる。なお図中、８
は１対の防音耳覆いを連結支持している防音耳覆い装着
用のヘッドバンドである。With the above structure, when using the above-mentioned soundproof ear covering, the user, regardless of the soundproofing effect of the soundproof ear covering, can give a conversation voice of a suitably adjusted volume through the sound transmitting device. I can listen. In the figure, 8
Is a headband for wearing a soundproof earmuff that connects and supports a pair of soundproof earmuffs.
【０００８】[0008]
【発明の効果】本発明に係る防音耳覆いによれば、不快
感又は聴覚器官の機能障害を発生させる有害な騒音を防
止するという本来の目的を達成すると同時に、必要時に
は会話も容易に行なうことができる。According to the soundproof earmuffs of the present invention, it is possible to achieve the original purpose of preventing harmful noise that causes discomfort or impairment of the function of the auditory organ, and at the same time facilitate conversation. You can
【０００９】本発明によれば、音声伝達回路において、
位相差を利用したキャンセル回路などの利用により、会
話音声帯域内に属する騒音を低下又は排除できるので、
音声の聴取が容易な防音耳覆いを得ることができる。According to the present invention, in the voice transmission circuit,
By using a cancellation circuit that uses the phase difference, noise belonging to the conversation voice band can be reduced or eliminated.
It is possible to obtain a soundproof earmuff that allows easy listening of sound.
【図１】本発明に係る防音耳覆いの一実施例の要部切断
正面図。FIG. 1 is a cutaway front view of an essential part of an embodiment of a soundproof ear covering according to the present invention.
【図２】従来公知の防音耳覆いの遮音特性線図。FIG. 2 is a sound insulation characteristic diagram of a conventionally known soundproof ear covering.
【図３】音声伝達回路の一実施例。FIG. 3 shows an example of a voice transmission circuit.
１ カップ状外被 ２ 防音材層 ３ クッション当接体 ４ スピーカー ５ マイクロホン ６ 電源電池 ７ 音声伝達回路 ９ ヘッドバンド DESCRIPTION OF SYMBOLS 1 Cup-shaped jacket 2 Soundproof material layer 3 Cushion abutment body 4 Speaker 5 Microphone 6 Power supply battery 7 Voice transmission circuit 9 Headband
【手続補正書】[Procedure amendment]
【提出日】平成４年８月１１日[Submission date] August 11, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】[0005]
【実施例】図１は、本発明に係る防音耳覆いの一実施例
の要部切断正面図である。図中、１は防音耳覆いのカッ
プ状外被である。カップ状外被１の内側には吸音材又は
遮音材などからなる防音材層２が内装され、そしてその
周端縁には環状のクッション当接体３が取付けられてい
る。また防音耳覆いには、防音耳覆いの内側に設けたス
ピーカー４と、カップ状外被１と防音材層２との間に設
けられたマイクロホン５及び電源電池６と、マイクロホ
ンから送出される電気信号の中の会話音声信号のみを出
来るだけ選択増幅してスピーカーに供給するフイルター
回路を有する音声伝達回路７とからなる音声伝達装置が
設けられている。なお図中、８はスピーカー４の保護網
板、９は１対の防音耳覆いを連結支持している防音耳覆
い装着用のヘッドバンド、１０は音声伝達回路７の電源
回路に設けた電源スイッチである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cutaway front view of an essential part of an embodiment of a soundproof ear covering according to the present invention. In the figure, reference numeral 1 is a cup-shaped outer cover of a soundproof ear covering. A soundproof material layer 2 made of a sound absorbing material or a sound insulating material is provided inside the cup-shaped outer cover 1, and an annular cushion abutting body 3 is attached to the peripheral edge thereof. Further, the soundproof ear covers include a speaker 4 provided inside the soundproof ear covers, a microphone 5 and a power supply battery 6 provided between the cup-shaped jacket 1 and the soundproof material layer 2, and electricity sent from the microphones. A voice transmission device comprising a voice transmission circuit 7 having a filter circuit which selectively amplifies only the conversation voice signal in the signal and supplies it to the speaker. In the figure, 8 is a protection network for the speaker 4.
A plate, 9 is a soundproof earmuff that connects and supports a pair of soundproof earmuffs.
Wearing headband 10 is a power source for the voice transmission circuit 7.
It is a power switch provided in the circuit .
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】以上の構成であるので、上記防音耳覆いの
使用に際して電源スイッチ１０を入れておけば、その使
用者は、防音耳覆いの防音効果とは関係なく、その音声
伝達装置を通して適度に調整された大きさの会話音声を
聞くことができる。With the above structure, if the power switch 10 is turned on when using the above-mentioned soundproof ear covers, the user can appropriately adjust through the sound transmitting device regardless of the soundproof effect of the soundproof ear covers. You can listen to the conversation voice of the specified volume.
【手続補正３】[Procedure 3]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図１[Name of item to be corrected] Figure 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 [Figure 1]
Claims (1)
なる防音耳覆いにおいて、周囲音波を電気信号に変換す
るマイクロホンを防音耳覆いの適所に、スピーカーを防
音耳覆いの内側に設けると共に、マイクロホンから送出
される電気信号を該電気信号の中の会話音声信号の主要
部のみを通過増幅させるフイルター回路を通してスピー
カーに供給する音声伝達回路を設けた構成。1. In a soundproof earmuff in which a soundproofing material layer is provided inside a cup-shaped outer cover, a microphone for converting ambient sound waves into an electric signal is placed at a proper position in the soundproof earmuff, and a speaker is placed inside the soundproof earmuff. And a voice transmission circuit for supplying an electric signal sent from a microphone to a speaker through a filter circuit for passing and amplifying only a main part of a conversation voice signal in the electric signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191395A JPH067397A (en) | 1992-06-26 | 1992-06-26 | Soundproof ear cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191395A JPH067397A (en) | 1992-06-26 | 1992-06-26 | Soundproof ear cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH067397A true JPH067397A (en) | 1994-01-18 |
Family
ID=16273895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4191395A Pending JPH067397A (en) | 1992-06-26 | 1992-06-26 | Soundproof ear cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067397A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021526A (en) * | 1996-08-15 | 2000-02-08 | Cabot Safety Intermeidate Corporation | Hearing protection device |
| JP2008520337A (en) * | 2004-11-17 | 2008-06-19 | ハワード ライト インダストリーズ、エルエルシー | Earmuff |
| JP2009011730A (en) * | 2007-07-09 | 2009-01-22 | Audio Technica Corp | Hearing protection device |
| CN108478328A (en) * | 2018-05-04 | 2018-09-04 | 广州金海纳防护用品有限公司 | Health ear cover |
-
1992
- 1992-06-26 JP JP4191395A patent/JPH067397A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021526A (en) * | 1996-08-15 | 2000-02-08 | Cabot Safety Intermeidate Corporation | Hearing protection device |
| JP2008520337A (en) * | 2004-11-17 | 2008-06-19 | ハワード ライト インダストリーズ、エルエルシー | Earmuff |
| US9980855B2 (en) | 2004-11-17 | 2018-05-29 | Honeywell Safety Products Usa, Inc. | Consistent blocking earmuff |
| JP2009011730A (en) * | 2007-07-09 | 2009-01-22 | Audio Technica Corp | Hearing protection device |
| CN108478328A (en) * | 2018-05-04 | 2018-09-04 | 广州金海纳防护用品有限公司 | Health ear cover |
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