Patent ID: 7267597

Claim:
A method of producing an infrared lamp comprising the steps of: connecting a connection terminal to at least one end of each of a plurality of heating elements formed of a sintered body including a carbon-based substance, forming one long heating element by connecting said heating element having said connected connection terminal to other heating elements via connection terminals, connecting a pair of electrode terminals to both ends of said long heating element, electrically connecting one end of an internal lead wire, the other end of which is connected to one end of an intermediate terminal plate, to each of said electrode terminals, forming a heating element assembly by connecting an external lead wire to the other end of said intermediate terminal plate, inserting said heating element assembly into a heat-resistant transparent glass tube, filling said heat-resistant transparent glass tube with an inert gas, melting both ends of said heat-resistant transparent glass tube, and sealing said heat-resistant transparent glass tube at said intermediate terminal plates of said heating element assembly.