JPS643344U

JPS643344U -

Info

Publication number: JPS643344U
Application number: JP9797587U
Authority: JP
Priority date: 1987-06-25
Filing date: 1987-06-25
Publication date: 1989-01-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す内部回路の構
成図、第２図は他例の内部回路の構成図、第３図
は更に他例の内部回路の構成図、第４図はそのス
イツチ手段の説明図、第５図はアンテナの自動伸
張機構の動作説明図、第６図はその構造説明図、
第７図は従来のハンドセツトタイプのコードレス
インターホンの説明図を示す。符号の説明、Ａ……本考案のコードレスインタ
ーホン、１７……通話ユニツト、１７ａ……その
スピーカー部、１７ｂ……そのマイク部。 Fig. 1 is a block diagram of an internal circuit showing one embodiment of the present invention, Fig. 2 is a block diagram of an internal circuit of another example, Fig. 3 is a block diagram of an internal circuit of yet another example, and Fig. 4 is a block diagram of the internal circuit of another example. An explanatory diagram of the switch means, Fig. 5 is an explanatory diagram of the operation of the automatic extension mechanism of the antenna, and Fig. 6 is an explanatory diagram of its structure.
FIG. 7 shows an explanatory diagram of a conventional handset type cordless intercom. Explanation of symbols: A: cordless intercom of the present invention; 17: telephone unit; 17a: its speaker section; 17b: its microphone section;

Claims

[Scope of Utility Model Registration Claim] A portable handset-type cordless intercom that transmits and receives radio signals of different frequencies to enable two-way calling and simultaneous conversation, in which a microphone for transmitting calls is installed. In some places,
1. A cordless interphone characterized by having a telephone unit having both speaker and microphone functions, and configured to output a calling signal through the speaker section of the telephone unit.