Provided is a vehicle approach notification device that can easily output a warning sound in which a discomfort feeling brought to an occupant is reduced while ensuring a necessary sound pressure. A vehicle approach notification device includes: a sound source; first and second amplifiers; a first speaker system including a first speaker and a second speaker that outputs a sound having an opposite phase to a sound output from the first speaker; and a second speaker system including a third speaker that outputs a sound having a same phase as the sound output from the first speaker and a fourth speaker that outputs a sound having an opposite phase to the sound output from the third speaker, wherein the first speaker system and the second speaker system are disposed so that the first speaker and the third speaker are located closer to a longitudinal center plane of the vehicle than the second speaker and the fourth speaker.
VEHICLE APPROACH NOTIFICATION DEVICE
2019-03-07
Patent
Elektronische Ressource
Englisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
VEHICLE APPROACH NOTIFICATION DEVICE AND VEHICLE APPROACH NOTIFICATION METHOD
Europäisches Patentamt | 2023
|VEHICLE APPROACH NOTIFICATION DEVICE AND VEHICLE APPROACH NOTIFICATION METHOD
Europäisches Patentamt | 2015
|