| 摘要 |
PROBLEM TO BE SOLVED: To provide a sounding body drive device which can output a pseudo beating sound similar to a beating sound of a mechanical relay by sound pressure so that a driver can recognize. SOLUTION: In a direction indication device 1, the sounding body drive device 20 is comprised of a microcomputer 2, an I/F3 and a buzzer 4. The microcomputer 2 outputs a pulse signal having a plurality of duty ratios with a single frequency at the time of the rising of a control signal in synchronization with the control signal making a right side turn signal lamp 11 and a left side turn signal lamp 12 flicker as a drive signal driving the buzzer 4, and outputs the pulse signal only once at the time of falling. COPYRIGHT: (C)2011,JPO&INPIT |
