Patent ID: 6585401
Filing Date: 2003-07-01
Classification: F21S

Abstract:
A light source bulb of a lighting device for a motor vehicle, which is mounted to a lamp base portion on the basis of a standard set for the light source bulb for the motor vehicle, comprising:a cylindrical lamp base flange attached to the lamp base portion; a case integrally or separately formed in a rear portion of the lamp base flange and forming a space sequential to the lamp base flange; a slider received within the lamp base flange in a state of being capable of sliding in a longitudinal direction; a glass tube fixed to a front portion of the slider; and a driving portion received within the case and connected to the slider so as to longitudinally slide the slider; wherein the glass tube is positioned within a substantially cylindrical fixed shade fixed to the lamp base flange, and wherein a notch portion for allowing a light divergence upward from the glass tube is formed in an upper portion of the fixed shade.