ELECTRIC LAMP

摘要

PURPOSE: To produce electric bulbs with simple structure by mass production and heighten the strength by containing rhenium to the surface of an electric current supply conductor of tungsten. CONSTITUTION: Rhenium is contained in the surface of an electric current supply conductor 3 which penetrates the wall of a lamp container 1 and is connected with an electric element 2. In the case rhenium exists in the surface of the tungsten wire, firm adhesion part between the tungsten wire 3 and the glass 4 is formed attributed to rhenium and excellent affinity is generated between the glass 4 and the wire 3 and the glass 4 forms an acute angleα. Consequently, high adhesion strength between the glass 4 and the tungsten wire 3 is provided and no damage is caused in the coating 6 and electric bulbs are produced easily.