ASSEMBLING STRUCTURE OF HEADLIGHT

PROBLEM TO BE SOLVED: To provide an assembling structure of a headlight capable of preventing the cracking of a reflector made of a resin and ensuring the contactability with an earth. SOLUTION: This assembling structure of a headlight comprises a socket 2 having a contact projecting part 5 on its outer surface and capable of inserting a basic part of a discharge tube 1 to be connected therewith, a hood 40 being assembled while holding a reflector 30 between the socket 2 and the hood 40, a support spring 7 mounted between the reflector 30 and the discharge tube 1 for elastically pressing the discharge tube 1 to the reflector 30, and a conducting piece 80 connected with a spring contact piece 82 elastically kept into contact with the contact projecting part 5 of the socket 2 by the relative rotation of the socket 2 to the hood 40, and mounted on the reflector 30 in a conducting state with the hood 40. A contact piece 81 is curled along a tangent direction of the rotation of the socket 2. An engagement groove 45 capable of inserting one end side 7a of the support spring 7 is formed on the hood 40.