Single end halogen incandescent bulb

摘要

A single end incandescent halogen bulb has an envelope ( 112 ) having a sealed cavity ( 114 ) containing a halide material, a pich or press seal ( 110 ) at one end, and a coiled wire filament ( 100 ) disposed in the sealed cavity ( 114 ). Filament legs ( 102, 104 ) comprise portions of the coiled wire filament ( 100 ) that have been drawn out straight so as to have a diameter which is approximately the same as a diameter of a wire from which filament ( 100 ) is formed. A first current supply ( 106 ) wire extends through the press seal ( 110 ) into the sealed cavity. This first wire ( 106 ) has a first clamp ( 118 ) formed at a terminal end thereof. The first clamp ( 118 ) clamps a first filament ( 102 ) leg to establish a first electrical connection and suspend the filament ( 100 ) in the sealed cavity ( 114 ). A second current supply wire ( 108 ) extends into and terminates within the press seal ( 110 ). This second wire ( 108 ) has a second clamp ( 116 ) which clamps a second filament leg ( 104 ) to establish a second electrical connection. The second clamp ( 116 ) is enclosed in the press seal ( 110 ).