FLUORESCENT LAMP AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent the shadow of the mercury drop from appearing on the surface of the fluorescent lamp during lighting, and to improve the appearance quality. SOLUTION: The fluorescent lamp comprises a glass bulb 1 formed with fluorescent substance membrane 4 on the inner face and a filament 8 provided at the both ends of the glass bulb. A mercury drop 6 adhered with powder 5 made of fluorescent substance particles on the surface is filled in the glass bulb.