JPH0476795U

JPH0476795U -

Info

Publication number: JPH0476795U
Application number: JP11990090U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-07-03

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る指向性マイク
ロホン装置の一部破断斜視図、第２図はこの指向
性マイクロホン装置の概略的断面図、第３図はこ
の指向性マイクロホン装置の指向特性を示す特性
図、第４図はこの指向性マイクロホン装置を内蔵
したビデオカメラの本体を示す斜視図、第５図は
ボデイを薄型カード状とした場合の一部破断斜視
図、第６図は第２実施例に係る指向性マイクロホ
ン装置の概略的断面図、第７図はボデイを薄型カ
ード状とした場合の第２実施例に係る指向性マイ
クロホン装置の分解斜視図、第８図は第２実施例
に係る指向性マイクロホン装置であつて、第７図
に示すものとは指向特性が異なるものの分解斜視
図である。１０，１０ａ，１０ｂ……指向性マイクロホン
、１１，１１ａ，１１ｂ……振動板、２０，３０
……ボデイ、２１ａ，２１ｂ……音響室、２２ａ
，２２ｂ……開口、Ａ……（指向性マイクロホン
１０の）指向方向、Ｂ…（指向性マイクロホン１
０ａの振動板１１ａの）振動方向、Ｃ……（指向
性マイクロホン１０ｂの振動板１１ｂの）振動方
向。 FIG. 1 is a partially cutaway perspective view of a directional microphone device according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view of this directional microphone device, and FIG. 3 is a directional characteristic of this directional microphone device. 4 is a perspective view showing the main body of a video camera incorporating this directional microphone device, FIG. 5 is a partially cutaway perspective view of the body in the form of a thin card, and FIG. FIG. 7 is an exploded perspective view of the directional microphone device according to the second embodiment when the body is shaped like a thin card; FIG. 8 is a schematic cross-sectional view of the directional microphone device according to the second embodiment; FIG. 8 is an exploded perspective view of a directional microphone device according to an example, which has a different directional characteristic from that shown in FIG. 7. FIG. 10, 10a, 10b... directional microphone, 11, 11a, 11b... diaphragm, 20, 30
...Body, 21a, 21b ...Sound room, 22a
, 22b...Aperture, A...Direction direction (of directional microphone 10), B...(Directional microphone 1)
The vibration direction (of the diaphragm 11a of the diaphragm 11a of 0a), C...the vibration direction (of the diaphragm 11b of the directional microphone 10b).

Claims

[Claims for Utility Model Registration] (1) A directional microphone and a body in which the directional microphone is built, the body having a pair of acoustic chambers in front and behind a diaphragm of the directional microphone. An opening is formed in a direction intersecting the vibration direction of the diaphragm of the directional microphone, and is provided at one end of the acoustic chamber and at a position offset laterally from the directional microphone for introducing sound waves. A directional microphone device characterized by: (2) A directional microphone device capable of stereo recording, comprising two directional microphones and a body housing the two directional microphones, and the body has diaphragms for the two directional microphones. A pair of acoustic chambers are formed before and after the directional microphone in a direction intersecting the vibration direction of the diaphragm of the directional microphone, and a sound wave is emitted at one end of the acoustic chamber and at a position deviated laterally from the directional microphone. A directional microphone device characterized by having an opening for introduction. (3) The directional microphone device according to claim 1 or 2, wherein the body has a thin card shape.