LAMP

WIPO Patent Application WO/2023/286550

A1

Provided is a lamp comprising: a voltage regulator (30) to which a first power supply line (PL1) to which a first voltage of a voltage source is applied, and a first ground line (GL1) are connected, and which applies a second voltage to a second power supply line (PL2); a light source (40) to which the second power supply line (PL2), and a second ground line (GL2) connected to the first ground line (GL1) are connected; a control unit to which a third ground line (GL3) connected to the second ground line (GL2), a fourth ground line (GL4) connected to the first ground line (GL1), and communication lines (CL1, CL2) from the light source (40) are connected, and which controls the light source (40); a detection unit (71) which detects an electric current flowing through the third ground line (GL3) or the fourth ground line (GL4); and a determination unit which, on the basis of a detection result from the detection unit (71), determines whether the second ground line (GL2) is brought into a high-impedance state or not.

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OTA YU (JP)
YANAGIZU SHOHEI (JP)

PCT/JP2022/024934

January 19, 2023

June 22, 2022

Click for automatic bibliography generation  

KOITO MFG CO LTD (JP)

F21S45/10; H05B47/20; H05B47/105; H05B47/18; F21W102/00; F21Y115/10

JP2018113175A	2018-07-19
JP2017056854A	2017-03-23

SHIN-EI PATENT FIRM, P.C. (JP)

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