Patent ID: 7714516
Filing Date: 2010-05-11
Classification: B60Q,H05B,Y02B

Abstract:
1. A lighting control apparatus for a vehicle lamp, comprising: a light quantity instruction value setup unit that receives information related to a lighting of a light source and sets a light quantity instruction value based on the information; an energy supply unit that supplies a voltage received from a power source to a low beam semiconductor light source in accordance with the light quantity instruction value, when the light quantity instruction value setup unit receives information for instructing a dimming of the low beam semiconductor light source, the light quantity value instruction setup unit sets a first light quantity instruction value, so that a light quantity of the low beam semiconductor light source is gradually reduced to a first light emission level for the reduced lighting of the low beam semiconductor light source, when the light quantity instruction value setup unit receives information indicating that a high beam light source is switched on, the light quantity instruction value setup unit sets a second light quantity instruction value, so that the light quantity of the low beam semiconductor light source is reduced to a second light emission level lower than the first light emission level, and when the light quantity instruction value setup unit receives information indicating that the high beam light source is switched off after the second light quantity instruction value is set, the light quantity instruction value setup unit cancels the second light quantity instruction value and sets a third light quantity instruction value, so that the low beam semiconductor light source is immediately switched on at the first light emission level.