VEHICLE APPROACH ALERT DEVICE

摘要

A vehicle approach alert device includes: an output sound generator that generates a sound output of output sound data read out from a memory device; a voltage control unit that changes a voltage of an output waveform of the sound output, and outputs a voltage control output; an amplifier that flows current, corresponding to the voltage control output, to a sound output body to output a vehicle approach alert sound; an acceleration operation amount obtaining device; a change amount calculation device that calculates a temporal change amount of the acceleration operation amount; an output sound control device that sets an envelope frequency of the vehicle approach alert sound based on the temporal change amount; and a change control device that controls the voltage control unit to change the voltage according to the envelope frequency.

主权项

1. A vehicle approach alert device for alerting an approach of a vehicle by outputting a vehicle approach alert sound, comprising:
an output sound generator that reads out output sound data from a memory device for storing the output sound data, and generates a sound output of the output sound data; a voltage control unit that changes a voltage of an output waveform of the sound output of the output sound data, which is output from the output sound generator, and outputs a voltage control output; an amplifier that controls a sound output body to output the vehicle approach alert sound by flowing current, corresponding to the voltage control output from the voltage control unit, to the sound output body mounted on the vehicle; an acceleration operation amount obtaining device that obtains an acceleration operation amount; a change amount calculation device that calculates a temporal change amount of the acceleration operation amount based on the acceleration operation amount obtained by the acceleration operation amount obtaining device; an output sound control device that sets an envelope frequency of the vehicle approach alert sound based on the temporal change amount of the acceleration operation amount calculated by the change amount calculation device; and a change control device that controls the voltage control unit to change the voltage of the output waveform of the output sound according to the envelope frequency.