Invention Grant
- Patent Title: Vehicle lamp
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Application No.: US17471289Application Date: 2021-09-10
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Publication No.: US12058792B2Publication Date: 2024-08-06
- Inventor: Tomoyuki Ichikawa , Tetsuya Suzuki , Atsushi Ozawa , Toru Ito
- Applicant: KOITO MANUFACTURING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: KOITO MANUFACTURING CO., LTD.
- Current Assignee: KOITO MANUFACTURING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: BUCHANAN INGERSOLL & ROONEY PC
- Priority: JP 19043568 2019.03.11 JP 20030765 2020.02.26 JP 20040725 2020.03.10
- Main IPC: H05B45/30
- IPC: H05B45/30 ; H05B45/345 ; F21Y115/10
Abstract:
A semiconductor light source and a constant current circuit are arranged in series between an input terminal and a ground terminal. When an input voltage at the input terminal exceeds a predetermined threshold voltage, a load dump circuit cuts off or reduces a current that flows through the constant current circuit.
Public/Granted literature
- US20210410248A1 VEHICLE LAMP Public/Granted day:2021-12-30
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