| 摘要 |
PROBLEM TO BE SOLVED: To reduce number of wires and to improve safety driving. SOLUTION: This unit is fitted to a sun visor 31 placed to an upper front part of a driver's seat and composed of a portable telephone set holder 42, a microphone 43, a speaker 44, a dial key 46, a means that reads dial numbers stored in the portable telephone set as abbreviated dials, a control main body 32 that connects these elements, so as to make hands-free speech through the portable telephone set and a means that connects this control main body to a power source. |
