Halogen lamp with an infrared reflective coating and reflector lamp therewith

摘要

A halogen lamp (1) of a 12V type including: a glass part (2), a portion of which is a light emitting portion (6) having a space therein and the rest of which is a sealing portion (5), both portions being made of quartz glass; an infrared reflective coating (3) formed to cover an outer surface of the glass part (2); a filament (4) which, supported by the sealing portion (5), is provided in the inner space of the light emitting portion (6); a molybdenum foil (8,9) which is embedded in the sealing portion (5) and is electrically connected to the filament (4); and a power supply line (10,11), one end of which is connected to the molybdenum foil (8,9), the other end exposed to outside. The halogen lamp satisfies 450mm 2 ‰¦Sb‰¦650mm 2 and Se‰§-0.35Sb+520, where Sb and Se designate outer surface areas of the light emitting portion (6) and the sealing portion (5), respectively.