Cold-cathode fluorescence lamp for illumination
A cold-cathode fluorescent lamp and cold-cathode technology, applied in lighting devices, lighting and heating equipment, lighting device components, etc., can solve the problems of small electron emission area and saturation of lamp tube current, so as to avoid tube current oversaturation , Improve the effect of luminous efficiency
Inactive Publication Date: 2011-03-30
GIO OPTOELECTRONICS CORP
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Problems solved by technology
[0003] At present, the inner diameter of the common cold cathode fluorescent lamps is mostly distributed between 1.4 and 2.4mm, and these CCFLs with small diameters have smaller electron emission areas of the electrodes, so that if the lamps are operated at a higher tube current In the state, the tube current of the lamp tube will be oversaturated because the ratio of the electrode emission current to the electrode electron emission area is too high, that is, the tube current exceeds the capacity of the electrode electron emission area.
In this case, although the power consumption of CCFL becomes higher, the excess power consumption is actually converted into heat instead of light
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[0025] A cold cathode fluorescent lamp for lighting according to a preferred embodiment of the present invention will be described below with reference to related drawings.
[0026] Such as figure 1 As shown, the CCFL lamp 1 for illumination according to the preferred embodiment of the present invention includes a CCFL tube 11 and a driving unit 12 .
[0027] The present invention does not limit the type of CCFL tube 11, which can be, for example, a straight tube, or a U tube, or a C tube, or an annular tube, or a single helical tube, or a double helical tube, and a straight tube is used as an example here. illustrate. The CCFL tube 11 includes a tube body 111 , and the inner tube diameter D1 of the tube body 111 is between 2.5mm-30mm, which belongs to the CCFL tube with a large diameter. The diameter D1 of the inner tube in this embodiment is 3mm as an example.
[0028] Two ends of the CCFL tube 11 each have an electrode 112 . The present invention does not limit the shap...
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Abstract
The invention relates to a cold-cathode fluorescence lamp for illumination, comprising a cold-cathode fluorescence lamp tube and a drive unit. The diameter of an inner tube of the cold-cathode fluorescence lamp tube is between 2.5 mm and 30mm, both ends are provided with electrodes, and the ratio of an electrode emission current to the electrode electron emission area of the cold-cathode fluorescence lamp tube is between 1.0 mA / mm<2> to 10 mA / mm<2>. The drive unit is electrically connected with the electrodes of the cold-cathode fluorescence lamp tube. The invention provides the cold-cathode fluorescence lamp tube with a large tub diameter, the diameter of the inner tube is between 2.5 mm and 30mm, and therefore, the electrode area can be greatly increased and higher tube current can be accommodated.
Description
technical field [0001] The present invention relates to a cold cathode fluorescent lamp, in particular to a cold cathode fluorescent lamp for lighting. Background technique [0002] A cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) is a mercury discharge lamp. After passing through high-frequency and high-voltage alternating current, the electrons inside the lamp tube hit the mercury vapor atoms to make them reach an excited state (Excited State), and the excited mercury The atoms will return to the ground state by emitting ultraviolet light, and the emitted ultraviolet light will further excite the phosphor in the CCFL to generate visible light. [0003] At present, the inner diameter of the common cold cathode fluorescent lamps is mostly distributed between 1.4 and 2.4mm, and these CCFLs with small diameters have smaller electron emission areas of the electrodes, so that if the lamps are operated at a higher tube current In the state, the tube current ...
Claims
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Login to View More IPC IPC(8): F21S2/00F21V23/00H01J61/34H01J61/067H01J61/12F21Y103/00
Inventor 谢欣珀
Owner GIO OPTOELECTRONICS CORP