FLUORESCENT LAMP AND AMALGAM ASSEMBLY THEREFOR

摘要

PURPOSE: A fluorescent lamp and an amalgam assembly therefor are provided to prevent migration of liquid amalgam into a lamp envelope. CONSTITUTION: An amalgam assembly for a fluorescent lamp comprises a glass exhaust tubulation(20) extending toward a base portion of the lamp. The tubulation is closed at an end adjacent the base portion. A glass body is disposed in the tubulation and retained by a pinched portion(22) of the tubulation. The glass body is disposed between the pinched portion(22) of the tubulation and the closed end of the tubulation. A mercury amalgam body(32) is disposed between the glass body and the closed end of the tubulation. A mercury wetting metallic layer(34) is disposed on an inside surface of the tubulation between the pinched portion and the closed end of the tubulation.