Patent ID: 8672525

Claim:
A projection head lamp assembly a vehicle comprising: a bulb irradiating light; a reflector supporting the bulb and reflecting light irradiated from the bulb forward; a shield unit including a shield shaft supported by the reflector and a shield integrally provided on the shield shaft; a solenoid having a straight movement; a drive cam inserted into one end of the shield shaft to be rotated according to the straight movement of the solenoid; and a lens connected to the front of the reflector; wherein a return spring having one end coupled to the drive cam and the other end coupled to the shield shaft is provided on an outer circumference of the shield shaft, wherein in the case of shifting from low beam to high beam, a power is applied to the solenoid to pull the drive cam to the rear and the shield shaft is rotated counterclockwise to rotate the shield downward, and in the case of shifting from the high beam to the low beam, the power supply to the solenoid is intercepted and the shield shaft is rotated clockwise by the return spring to rotate the shield upward to its original position.