HOT CATHODE FLUORESCENT LAMP WITHOUT FILAMENT

摘要

A hot cathode fluorescent lamp without filament includes a tube having a phosphor layer coated on an inner surface thereof and being filled with an amalgam and an inert gas, two 5 electrodes sealedly provided at two ends of the tube respectively wherein at least one of the electrodes, which is made of metallic anti-evaporation material having a melting point of at least 1500°C, has an oxide layer coated on an outer surface of the electrode, and a peripheral circuit electrically coupled with the electrodes, wherein two outer wires are electrically extended from the electrodes to an exterior of the tube respectively, wherein the tube has an 10 inner operation pressure in a range from 400 to 2600 pascal.