| 摘要 |
PURPOSE:To call irrespective of a state that a transmitter and receiver is held by hand, by selectively driving so that the upper side of the transmitter and receiver, and the lower side become a receiving part and a transmitting part, respectively, by a slide switch sliding up and down due to gravity. CONSTITUTION:Both microphones 10, 20 and loudspeakers 11, 21 are incorporated in both ends of a transmitter and receiver, respectively, and contacts 300-302 and 310-312 are selectively connected by a switch 3 having a slide piece 30 sliding up and down due to gravity. For instance, in case one end 1 of the transmitter and receiver is up, the contact 301 and 302, and the contact 311 and 312 are connected, and in one end 1 of the transmitter and receiver, the microphone 10 and the loudspeaker 11 become a non-driving state and a driving state, respectively, and in the other end 2, the microphone 20 is driven and the loudspeaker 21 becomes a non-driving state. |
