US 12,466,314 B2
Vehicle approach notification device
Teppei Kawasaki, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jul. 10, 2024, as Appl. No. 18/768,185.
Claims priority of application No. 2023-134775 (JP), filed on Aug. 22, 2023.
Prior Publication US 2025/0065805 A1, Feb. 27, 2025
Int. Cl. B60Q 5/00 (2006.01); G08B 21/02 (2006.01); G10K 11/22 (2006.01)
CPC B60Q 5/005 (2013.01) [G10K 11/22 (2013.01); B60Q 5/008 (2013.01); G08B 21/02 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A vehicle approach notification device mounted on a vehicle, comprising:
a sound emitter configured to output a notification sound for indicating approach of the vehicle; and
processing circuitry configured to control the sound emitter, wherein
the sound emitter includes:
a vibration plate that is disposed in an internal space of the sound emitter and configured to generate sound; and
sound guide tubes that are configured to output the notification sound toward an outside of the vehicle,
the sound guide tubes include:
a first sound guide tube directed to a front area in front of the vehicle; and
a second sound guide tube directed in a direction different from a direction in which the first sound guide tube is directed,
each of the sound guide tubes is configured to amplify a sound having a frequency corresponding to a tube path length of the sound guide tube by causing the sound generated by the vibration plate to resonate, and
the tube path length of the first sound guide tube and the tube path length of the second sound guide tube are different from each other.