- Patent Title: Vehicle front lighting apparatus and disconnection detection method
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Application No.: US16902634Application Date: 2020-06-16
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Publication No.: US11219109B2Publication Date: 2022-01-04
- 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: JPJP2017-251844 20171227
- Main IPC: H05B45/48
- IPC: H05B45/48 ; B60Q1/14 ; H05B47/10 ; H05B45/14 ; H05B45/54 ; H05B45/12 ; H05B47/165

Abstract:
A vehicle front lighting apparatus includes a lighting device array in which multiple lighting devices are connected in series, multiple bypass circuits, multiple switch elements, a lighting intensity detector, a lighting schedule generator, a lighting controller, a current value detector, a voltage value controller, a detector, and a disconnection determiner. When there is the switch element to be brought into a closed state during a prohibition period from a lighting timing to a post-lighting timing, the lighting schedule generator changes a timing at which the switch element is brought into the closed state outside the prohibition period. The disconnection determiner determines that a disconnection has occurred in any of the bypass circuits when the number of switch elements detected at the post-lighting timing does not match a voltage value.
Public/Granted literature
- US20200314984A1 VEHICLE FRONT LIGHTING APPARATUS AND DISCONNECTION DETECTION METHOD Public/Granted day:2020-10-01
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