To provide a vehicle approach alarm system with which the consumption of electric power can be reduced and the cost reduction and the down sizing can be achieved.
In a meter device 1 mounted on a vehicle, when the vehicle speed of a vehicle is equal to or more than 5 km/h and less than 40 km/h, vehicle approach alarm information is transmitted from a transmission antenna 22, and a pedestrian receives the vehicle alarm information at a reception antenna 61 of a headphone 50 of a carried portable audio player 70. When the distance between the vehicle and the pedestrian is shorter than the braking distance of the vehicle based on the vehicle speed of the vehicle and the electric filed intensity of a received electric wave, alarm is issued to notify the pedestrian of the vehicle approaching by making an alarm sound from an Rch ear pad 54 of the headphone 50.
| JP2005202913A | 2005-07-28 | |||
| JP2009154775A | 2009-07-16 | |||
| JP2006331154A | 2006-12-07 | |||
| JP2009098854A | 2009-05-07 | |||
| JP2007108935A | 2007-04-26 | |||
| JPH09190600A | 1997-07-22 |
| US20090002197A1 | 2009-01-01 |
Sadao Matsumura
Fumio Takino
Toshiaki Tsuda
Yuji Yoshida