LIGHT SOURCE FOR TRANSPORT VEHICLE HEADLIGHT Russian patent published in 2005 - IPC

FIELD: light source for transport vehicle headlight operating in modes "dim light - distance light".

SUBSTANCE: light source includes lamp with one lighting zone and blind closing from downwards lighting zone of lamp mounted in headlight operating in "dim light" mode. Lamp and blind are provided with member for moving them in mutually opposite directions from one position corresponding to "dim light" mode to other position corresponding to "distance light" mode. Said unit may include movable lamp assembly mounted on driven fork kinematically connected with servo drive and tie rod whose one end is secured to blind and other end is kinematically connected to driven fork through two-arm lever having forks in its ends and jointly secured to stationary axle. Kinematic connection of driven fork with servo drive may be in the form of crank mechanism whose pin is inserted into slit of driven fork.

EFFECT: lowered total mass, reduced power consumption, enhanced continuous operation of lamp at switching.

3 cl, 2 dwg