Patent ID: 8207675
Filing Date: 2012-06-26
Classification: B60Q,F21S,F21V,F21W,G05D,H05B

Abstract:
1. A vehicle lamp comprising: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power from an electric power source and to supply second current to the N current supply units, the control unit comprising: wherein the fans are coupled to the control unit and wherein each of the M switch elements stops a rotational drive of the corresponding fan by shutting off the fan drive current when the switch element is turned off, and wherein the control unit is arranged so that if the control unit determines that values of the fan drive current detected by the current detection circuits are equal to or smaller than a threshold value, the control unit controls the amount of the supplied second current such that the amount of the supplied second current is decreased and generates abnormal signals of the fans.