| 摘要 |
PROBLEM TO BE SOLVED: To reduce in size a television interphone device. SOLUTION: The television interphone device comprises a door interphone slave unit having a television camera for imaging a visitor, a speaker for speaking and a microphone, and an interphone master unit having a flat Braun tube 25 connected to the door interphone slave unit to reproduce a video imaged by the camera of the slave unit, a speech dynamic speaker 22 for talking with the slave unit and a speech microphone. In this case, the master unit has a magnetic shield for inhibiting an influence of a magnetic flux from the dynamic speaker to a deflecting yoke 26 of the Braun tube.
|
