In a automotive headlamp having a discharge bulb as a light source, a lighting circuit receiving chamber is formed in the rear of a lamp body, a discharge bulb lighting circuit is fixed in the lighting circuit receiving chamber through resin molding, and an inner flange-like guide portion is formed in...http://www.google.com/patents/US5228766?utm_source=gb-gplus-sharePatent US5228766 - Automotive headlamp
