Invention Grant
- Patent Title: Vehicle front lighting apparatus
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Application No.: US16902596Application Date: 2020-06-16
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Publication No.: US11035542B2Publication Date: 2021-06-15
- Inventor: Yoichi Fukatsu , Toshiya Tanaka , Yosuke Ishiguro , Hisanori Takenaka
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JPJP2017-242522 20171219
- Main IPC: H05B47/10
- IPC: H05B47/10 ; F21V23/00 ; F21S41/663 ; F21S41/151 ; H05B47/16 ; B60Q1/14 ; F21V23/04 ; F21Y115/10

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.
Public/Granted literature
- US20200309340A1 VEHICLE FRONT LIGHTING APPARATUS Public/Granted day:2020-10-01
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