Vehicle front lighting apparatus
US11035542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jun 16, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle front lighting apparatus includes a lighting device array in which a plurality of lighting devices are connected in series, a plurality of bypass circuits, a plurality of switch elements, a lighting controller, a current value detector, a voltage value controller, and a disconnection determiner. The voltage value controller applies a voltage to the lighting device array, and controls a voltage value to be applied to cause a value of current flowing through the lighting device array to reach a predetermined target current value. The disconnection determiner determines that there is a disconnection in any of the bypass circuits when the number of the switch elements brought into the opened state does not match the controlled voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.