| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp, which can be fixed to a predetermined position without any inclination of an electrode or filaments. SOLUTION: The lamp is comprised of: an inner lead bar (3a), which is extended in a luminous part of an envelope (10a); an outer lead bar (4a), which is led outside a pinch seal part 1a of the envelope (10a); and a metal foil (2a), where each terminal of the inner lead bar (3a) and an outer lead bar (4a) is bonded on one surface, and which is embedded in the pinch seal part (1a) with the bonded terminals. A concave part (6a) is formed on the part that corresponds to at least the center of the metal foil (2a) on a pinch surface 1a1 of the pinch seal part (1a) on the lead bar bonding side of the metal foil (2a).
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