JPH0217799U

JPH0217799U -

Info

Publication number: JPH0217799U
Application number: JP9614988U
Authority: JP
Priority date: 1988-07-20
Filing date: 1988-07-20
Publication date: 1990-02-06

Description

[Brief explanation of drawings]

第１図ないし第３図はこの考案の各実施例を示
す側断面図、第４図はこの考案の導声器の取付け
状態を一部断面で示した図である。１……送話器、１Ａ……送話口、３……導声管
、３１……開口部、４……吸音層、５，１５……
呼気逃がし孔、６……消声孔。 1 to 3 are side sectional views showing each embodiment of this invention, and FIG. 4 is a partially sectional view showing how the voice guide of this invention is installed. 1... Transmitter, 1A... Mouthpiece, 3... Voice guide tube, 31... Opening, 4... Sound absorption layer, 5, 15...
Exhalation relief hole, 6...Voice-muffling hole.

補正昭６３．１２．１実用新案登録請求の範囲を次のように補正する
。Amendment December 1, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】１概して口、鼻をおおつてほぼ密封できる筒状
マスクをなし、一端が開口部３１となり、他端開
口側を電話の送話器１の送話口１Ａに一体的にま
たは別体として取り付けるようにされた導声管３
の内周壁部に吸音層４が設けられると共に、周壁
の一部に少なくとも１個の呼気逃がし孔５が穿設
されて成ることを特徴とする送話器用導声器。２前記周壁に少なくとも１個の消声孔６が穿設
されていることを特徴とする請求項１記載の送話
器用導声器。３前記吸音層４が独立気泡または連結気泡を有
する多孔性材料によつて形成されていることを特
徴とする請求項１記載の送話器用導声器。４前記導声管３の開口部３１の内径をｄ、深き
をＬとしたときＬ＝ｎｄ（ｎ：正整数）であるこ
とを特徴とする請求項１記載の送話器用導声器。５前記呼気逃がし孔がラビリンス構造の呼気逃
がし孔１５であることを特徴とする請求項１記載
の送話器用導声器。６前記導声管３が送話器１に一体的に形成され
ていることを特徴とする請求項１記載の送話器用
導声器。[Scope of Claim for Utility Model Registration] 1. Generally constitutes a cylindrical mask that can cover the mouth and nose in a nearly sealed manner , with one end serving as an opening 31 and the other opening end integrated into the mouthpiece 1A of the telephone transmitter 1. Voice guide tube 3 that is attached separately or separately
A voice guide for a transmitter, characterized in that a sound absorbing layer 4 is provided on an inner circumferential wall thereof, and at least one exhalation relief hole 5 is bored in a part of the circumferential wall. 2. The voice guide for a transmitter according to claim 1, wherein at least one muffling hole 6 is bored in the peripheral wall. 3. The voice guide for a transmitter according to claim 1, wherein the sound absorbing layer 4 is formed of a porous material having closed cells or connected cells. 4. The voice guide for a transmitter according to claim 1, wherein when the inner diameter of the opening 31 of the voice guide tube 3 is d and the depth is L, L=nd (n: positive integer). 5. The voice guide for a transmitter according to claim 1, wherein the exhalation relief hole is an exhalation relief hole 15 having a labyrinth structure. 6. The voice guide for a transmitter according to claim 1, wherein the voice guide tube 3 is integrally formed with the transmitter 1.

Claims

[Claims for Utility Model Registration] 1. Generally shaped like a hollow cylinder, with an opening 31 at one end.
, and the other end opening side is the mouthpiece 1 of the telephone transmitter 1.
A sound absorbing layer 4 is attached to the inner circumferential wall of the voice guide tube 3, which is attached coaxially, integrally, or separately to A.
is provided, and at least one
A voice guide for a transmitter, characterized in that the exhalation relief hole 5 is formed. 2. The voice guide for a transmitter according to claim 1, wherein at least one muffling hole 6 is bored in the peripheral wall. 3. The voice guide for a transmitter according to claim 1, wherein the sound absorbing layer 4 is formed of a porous material having closed cells or connected cells. 4. The voice guide for a transmitter according to claim 1, wherein when the inner diameter of the opening 31 of the voice guide tube 3 is d and the depth is L, L=nd (n: positive integer). 5. The voice guide for a transmitter according to claim 1, wherein the exhalation relief hole is an exhalation relief hole 15 having a labyrinth structure. 6. The voice guide for a transmitter according to claim 1, wherein the voice guide tube 3 is integrally formed with the transmitter 1.