Cold-cathode gas discharge device

Abstract

The present invention relates to a cold cathode gas discharge device including a or a plurality of cold cathode fluorescent lamps, wherein a or a plurality of lamps composing a luminous frame having multiplex spirality shape; at least two electrodes connected with a or a plurality of lamps electrically, when a voltage is applied on the electrode, the luminous frame emits light; and a support member for supporting a or a plurality of lamps. The cold cathode gas discharge device makes the cold cathode fluorescent lamps has high luminance, high efficiency, long lifetime, high contrast and excellent color.

Description

field of invention [0001] The invention relates to a cold cathode fluorescent lamp device, in particular to a single-color, multi-color or full-color cold cathode gas discharge device with high luminous rate, high efficiency and long life. The invention can be used for lighting and displaying super large screen display device of characters, graphics and video images and displaying traffic information, and can be used indoors and outdoors at the same time. Background technique [0002] Hot cathode fluorescent lamps (HCFLs) have found application in lighting. Hot cathode fluorescent lamps operate in the arc lamp gas discharge area. It works at a relatively low voltage (about 100 volts), high current (in the range of 60 mA), high efficiency (such as 80 lumens / watt), and the cathode usually works at a relatively high temperature, such as 900 Celsius. Typically, these cathodes will first have to be warmed up to a certain temperature using a starter and ballast before the fluor...

AI Technical Summary

Problems solved by technology

These incandescent lamps are bright, but also have many disadvantages:

However, light-emitting diodes have the following disadvantages: low luminous efficiency and high power consumption, especially for large-screen display devices; low brightness for outdoor applications, especially when a wide viewing angle or direct sunlight is required; expensive, especially for Very large screen display devices, therefore require a large number of LEDs; and have a low lifetime at high brightness levels

[0019] Hot cathode fluorescent display device technology has been used in the so-called "Skypix" display system (page 577 of "SED'91 Digest", 1991), which can produce high brightness, about 5000 cd / m2, so it can be used in direct sunlight There is still sufficient brightness under illumination. The disadvantages of this system are: the luminous efficiency is low due to the short arc of the hot cathode and gas discharge; many but short life

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