| 摘要 |
PURPOSE:To prevent a contact between an antenna and the human ears and to improve the speech transmitting input to a microphone by attaching the antenna of a radio telephone slave device to an end part opposite to a telephone receiver and providing a microphone opening part and a microphone cavity part into the microphone. CONSTITUTION:The radio wave are transmitted to the ears from a telephone receiver 2 via an antenna 5 and a radio transmitter/receiver 4. The vices of a speaker are transmitted to a microphone 3 via a microphone opening part 6 and a microphone cavity part 7 and then outputted to a telephone circuit via the transmitter/receiver 4 and the antenna 5. As the antenna 5 of a radio telephone slave device 1 is positioned at and end part opposite to the receiver 2, the antenna 5 never touches the ears of the speaker. Furthermore the space between the receiver 2 and the part 6 can be set equal to the distance between the ears and the mouth of the speaker. The external noises can be cut off when the part 7 is set into the antenna 5. As a result, the speech transmitting input is improved to the microphone 3. |
