Helical type cold cathode fluorescence lamp

Abstract

The disclosed lamp includes bulb shell, luminous tube, cathode of tube, guiding thread, actuator as well as casing, lamp base and connecting line. Characters are that luminous tube is a double helix tube, and a getter layer of zirconium vanadium iron is coated on cathode of tube. The said double helix tube can be as following forms: two helix tubes are embedded and spiraled along axial direction, and their ends are connected; external diameters of two helixes are identical, or external diameters are gradual changed to larger from smaller or vice versa etc. Bulb shell is made from transparent, milky or frosted glass, or plastic. There is light reflection layer on inner wall of bulb shell. Colors of bulb shell include colorless, blue, red etc. Advantages are: the getter layer of zirconium vanadium iron provides high capability of air intake, thus activation can be completed in conventional exhaust process so as to save additional equipment.

Description

technical field [0001] The utility model relates to a fluorescent lamp, in particular to a spiral cold cathode fluorescent lamp. Background technique [0002] At present, the spiral cold cathode fluorescent lamp has been used in the field of display and lighting because of its thin tube diameter, non-filament-based metal cathode, high surface brightness and long life of the lamp tube. The spiral cold cathode fluorescent lamp has the same structure as the general energy-saving fluorescent lamp (CFL): the glass tube is filled with inert gas and trace mercury, the tube wall is coated with phosphor powder, and the electrodes at both ends of the tube are subjected to high voltage to generate discharge. Under the impact of electrons, it is excited to emit (253.7nm) ultraviolet rays, and the ultraviolet rays excite the fluorescent powder to convert and emit visible light. It is different from CFL: the cathode of the lamp is not a filament with a diameter of only a few tenths of a ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of this utility model is to overcome the problems of insufficient air-absorbing ability of the cathode getter of the existing spiral cold cathode fluorescent lamp, high activation temperature, and the need for expensive additional equipment, etc. The cathode getter of the cold cathode fluorescent lamp, the utility model designs a kind of spiral type cold cathode fluorescent lamp, comprises bulb shell, lamp tube, lamp tube cathode, guide wire, driver and its shell, lamp holder, connection line, is characterized in that: lamp The tube is a double helix tube with a layer of zirconium vanadium iron getter on the tube cathode

Images