| 摘要 |
PROBLEM TO BE SOLVED: To enable hand-free communication with the outside even when a speaker on a passenger seat side fails by outputting reception voice from the speaker of the assistant driver seat side in the case of not detecting the collision state of an automobile and outputting it from one of the speakers other than the one on the passenger seat side in the case of detecting a collision. SOLUTION: A hand-free unit 11 turns ON only the speaker S1 on the passenger seat side and outputs the reception voice during the hand-free communication. Also, the hand-free unit 11 is linked with a navigation unit 14 connected to a collision state detection means 15. The collision state detection means 15 can detect the air bag opening signals of an air bag device provided in a car body and detects the collision of the automobile from the air bag opening signals. Thus, when the collision state detection means 15 detects the air bag opening signals, the hand-free unit 11 switches the reception voice from the speaker 1 on the passenger seat side so as to be outputted from all the other speakers. |
