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:
May. 07, 2019
Filed:
Feb. 23, 2018
Toshiba Lighting & Technology Corporation, Yokosuka-shi, Kanagawa-ken, JP;
Daisuke Kosugi, Yokosuka, JP;
Atsushi Heike, Yokosuka, JP;
Toshiba Lighting & Technology Corporation, Yokosuka-shi, Kanagawa-ken, JP;
Abstract
According to one embodiment, a vehicle lighting device includes a plurality of circuit portions each of which has at least one light emitting element; and a control portion that is electrically connected to the plurality of the circuit portions. The control portion connects the plurality of the circuit portions in series if an input voltage exceeds a predetermined value, and connects at least a part of the plurality of the circuit portions in parallel if the input voltage is equal to or less than the predetermined value. The predetermined value is a value equal to or more than a voltage corresponding to a current value used for failure determination of the vehicle lighting device.