TUBULAR INCANDESCENT LAMP

PURPOSE:To surely support a filament coil on the axis of a bulb by constituting a ring anchor with a ring section integrally extended in the radial direction from one end of a winding section wound on the filament coil in contact with the inner face of the bulb and an extension section extended in the radial direction from the other end of the winding section in contact with the inner face of the bulb. CONSTITUTION:A ring anchor 4 supporting a mount 2 has a winding section wound on the mount 2, a ring section 9 extended in the radial direction from one end of the winding section 8 in contact with the inner face of a bulb 1, and an extension section 10 extended in the radial direction from the other end of the winding section 8 in contact with the inner face of the bulb 1. Since both the ring section 9 provided at one end of the winding section 8 of the ring anchor 4 and the extension section 10 provided at the other end of the winding section 8 are kept in contact with the inner face of the bulb 1, the occurrence of inclination is reduced. A filament coil 3 can be surely held on the center axis of the bulb 1 even if vibrations and shocks are applied.