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Patent Searching and Data


Title:
VEHICULAR LED LIGHTING CONTROL DEVICE AND METHOD FOR CONTROLLING VEHICULAR LED LIGHTING CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/163076
Kind Code:
A1
Abstract:
This vehicular LED lighting control device is provided with: a short-circuit current limiting circuit which, between a first LED terminal and one end of a capacitor, is connected in series to an overcurrent limiting circuit and a detection resistor of a current detection circuit, and which increases in resistance and limits the current that flows between the first LED terminal and the one end of the capacitor when a short circuit detection circuit detects a short circuit between the first LED terminal and a second LED terminal; and a voltage detection circuit which detects the potential difference between the first LED terminal and the one end of the capacitor and which controls a power supply switch to forcibly turn off the power supply switch when the potential difference reaches a preset value.

Inventors:
TAKASHIMA Toyotaka (10-13, Minami-cho, Hanno-sh, Saitama 85, 〒3578585, JP)
Application Number:
JP2018/006637
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
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Assignee:
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. (2-1 Ohtemachi 2-chome, Chiyoda-ku Tokyo, 04, 〒1000004, JP)
International Classes:
H05B37/02; B60Q1/04; B62J6/00
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (Kyowa Patent & Law Office, Nippon Life Marunouchi Building 1-6-6, Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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