Cold cathode light-source and use thereof

Abstract

The invention provides a kind of cold cathode light tube, it includes cold cathode light tube, lamp holder, control circuit. The cold cathode light tube is set o the lamp holder, the lamp holder connects with the control circuit; the cold cathode source is used as the lamp-house of the lamp, it connects with the solar battery and transforms the solar energy into electric energy.

Description

technical field [0001] The invention relates to a lamp light source, in particular to a cold cathode light source and its application in solar lamps. Background technique [0002] Solar lamps are a new type of environmental protection and energy-saving lamps. They are more and more widely used in people's daily life lighting. Their working principle is to convert the sun's light energy into electrical energy and store it in the battery during the day. The light is turned on through the discharge of the light source; because the solar energy is relatively scattered, it is not easy to collect and convert, which puts forward higher requirements for the light source of the solar lamp, requiring the light source of the solar lamp to be more energy-saving than other light sources, and the electricity-light conversion efficiency and brightness are higher. The lighting time and service life are longer. In order to meet these requirements, the solar photov...

AI Technical Summary

Problems solved by technology

The existing solar lamps mainly have the following light sources available for configuration: (1) incandescent lamps; Less used; (2) Energy-saving lamps; energy-saving lamps are a kind of fluorescent lamps, which can save about 3 / 4 energy than ordinary incandescent lamps, and the energy-saving effect is obvious. The main problem is that the service life is too short. In fact, the energy-saving lamps produced by many manufacturers can only reach hundreds or 1000 hours. It is very inconvenient to replace the bulbs after several weeks to months of use; (3) LED (Light-emitting diode); LED is an energy-saving miniature light source with long life (up to 100,000 hours) and high light intensity (> 3000mCD), which can be used in solar lamps; its biggest disadvantage is strong directionality and light angle ( θ / 2) is small, and there is almost no reflected light when installed in an ordinary lamp holder; when the light angle increases (θ / 2>30°), the illuminance decreases geometrically, which is not ideal for large-area lighting

[0003] In the existing technology, there is a light source called a cold cathode fluorescent tube (CCFL). The discharge principle of this fluorescent tube is different from that of other fluorescent tubes. There will be no problem of filament burning; the electrode of the cold cathode light tube is made of a special tungsten alloy, which is resistant to high temperature and can maintain the stability of the physical and chemical properties of the electrode after long-term use. The above design makes the cold cathode light tube The continuous service life is more than 5 years; at present, cold cathode light tubes are mainly used in the scanning light source of copiers and scanners, the backlight source of notebook computers and liquid crystal displays, etc., and no application technology has been found as a light source for solar lamps.

Images