The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 2021
Filed:
Feb. 21, 2018
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Yoshihiro Kudo, Tokyo, JP;
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A loudspeakeroutputs a warning sound for announcing the presence of a vehicle to the outside of the vehicle. A travel start detection unitdetects travel start of the vehicle. A sound pressure control unitcontrols sound pressure of the warning sound to be output from the loudspeaker, depending on travel status of the vehicle. The sound pressure control unitmakes the loudspeakeroutput the warning sound during stopping of the vehicle, and increases the sound pressure of the warning sound upon detection of travel start of the vehicle. This makes it possible to announce the travel start of a low-noise vehicle such as an electrically powered vehicle, without making the surroundings feel unnatural.