Abstract: A filament lamp with bases in which the pinch seal areas are not damaged and no adhesive is used is achieved by the base of a filament lamp with bases having, in its front area, a holding part for holding a pinch seal area and a first opening into which an outer lead pin is inserted, and in its rear area, a second opening into which a plate-shaped terminal is inserted. Furthermore, the base has another opening, between the first opening and the second opening, which is used to weld the outer lead pin to plate-shaped terminal in a direction which orthogonally intersects the lengthwise direction of the base and orthogonally intersects the wider crimped foot surface of the pinch seal area. The plate-shaped terminal has a size such that it does not fall out of the second opening of the base. The terminal is welded to the outer lead pin such that its flat surface is parallel to the pinch seal area.