Patent ID: 9320107
Filing Date: 2016-04-19
CPC Classification: B60Q,H05B

Claim Text:
1. A vehicular lamp comprising: a plurality of light emitting devices connected in series; a light source power supply configured to supply an emission driving current to the plurality of light emitting devices; one or more bypass units connected in parallel to at least some of the light emitting devices to form a bypass route of the emission driving current so as to cause the light emitting devices to be in a turn-OFF state or to cut off the bypass route of the emission driving current so as to cause the light emitting devices to be in a turn-ON state according to a bypass control signal; an abnormality detecting unit configured to generate a state signal indicating whether the one or more bypass units are in a normal state or in an abnormal state as well as whether the light emitting device side is in a normal state or in an abnormal state; and a control unit configured to control the bypass route based on the state signal generated in the abnormal detecting unit such that the light emitting devices are either in the turn-OFF state or in the turn-ON state, wherein when a signal indicating that the one or more bypass units are abnormal is generated as the state signal, supply of the emission driving current from the light source power supply is reduced or stopped.