CN2603503Y

CN2603503Y - Cold cathode right source

Info

Publication number: CN2603503Y
Application number: CN 03224583
Authority: CN
Inventors: 李仲吉; 许卫华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-28
Filing date: 2003-03-28
Publication date: 2004-02-11
Anticipated expiration: 2013-03-28

Abstract

The utility model provides a cold cathode light source comprising a cold cathode light tube, a light holder and a control circuit. The cold cathode light tube is installed on the light holder. The light holder is connected with the control circuit. As the light source of solar luminaires, the cold cathode light source is connected with the solar battery and is transformed into the electric energy to illuminate by the solar energy. The cold cathode light source with a long working life, a high strengh of illumination,a little luminous decay, a good color temperature, evenly and widely distributed light raies is relatively suitable for illumination light source. The performace of utility model which is better than prior incandescent lamps and energy saving light source has a wide market prospect.

Description

Cold cathode luminous source

Technical field

The utility model relates to a kind of lamp light source, particularly a kind of cold cathode luminous source.

Background technology

Solar energy lamp is a kind of light of environmental protection and energy saving, be applied to more and more widely in the daily life illumination, its operation principle is to become electrical power storage in storage battery the transform light energy of the sun in the daytime, and electricity of accumulator is by the light source bright lamp that discharges during night; Because solar energy relatively disperses, collecting conversion is difficult for, this just has higher requirement to the light source of solar energy lamp, require the light source of solar energy lamp more energy-conservation than other light source, electricity-light conversion efficiency and brightness are higher, lighting time and longer service life, in order to reach these requirements, solar energy-electric industry is being sought a kind of comparatively desirable light source always.Existing solar energy lamp mainly contains following several light source can supply configuration: (1) incandescent lamp; The incandescent lamp price is the most cheap, but because incandescent lamp power consumption is too big, and electricity-light conversion efficiency is low, useful life is very short again, general less use; (2) electricity-saving lamp; Electricity-saving lamp is a kind of fluorescent lamp, and more energy-conservation about 3/4 than general incandescent lamp, energy-saving effect is obvious, brightness (＞2000mCD) and light firing angle (360 °) can both reach the lighting requirement of solar energy lamp; Its subject matter is to use the life-span too short, and the electricity-saving lamp of in fact a lot of manufacturer production can only reach hundreds of or 1000 hours, uses several weeks to some months more to change the bulb, very inconvenience; (3) LED (light-emitting diode); LED is a kind of energy-saving minitype light source, long (can reach 100,000 hours), luminous intensity height of life-span (＞3000mCD), can be used for solar energy lamp; Its maximum shortcoming is a high directivity, and light firing angle (θ/2) is less, and being contained in does not almost have reverberation in the normal lamp holder; When the light firing angle increases (θ/2＞30 °), illuminance then is geometric progression and reduces, and it is not ideal enough to be used for large area lighting.

It is cold cathode light pipe (CCFL) that a kind of light source is arranged in existing technology, and this light pipe is different with the discharge principle of other fluorescent tubes, does not have filament in its light pipe, does not need the preheating discharge, so than more electricity saving, the problem of the disintegration of filament also can not occur; The electrode of cold cathode light pipe is made by special tungsten alloy, and tungsten alloy is high temperature resistant, and long-term use still can keep the stability of the physical and chemical performance of electrode, and above-mentioned design makes surpass more than 5 years the continuous useful life of cold cathode light pipe; At present, the cold cathode light pipe is mainly used in the fields such as scanning light source, notebook computer and Backlight For Liquid Crystal Display Panels of photocopier and scanner, does not find that as yet its application technology as the solar energy lamp light source is open.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of existing solar energy lamp light source technology, and a kind of cold cathode luminous source of the be used in solar energy lamp durable, that optical property is good that economizes on electricity is provided.

The purpose of this utility model is achieved through the following technical solutions: this cold cathode luminous source comprises cold cathode light pipe, lamp socket, control circuit, and the cold cathode light pipe is installed on the lamp socket, and lamp socket is connected with control circuit.

Described cold cathode luminous source also can include the lamp sleeve pipe, and the cold cathode light pipe is arranged in the lamp sleeve pipe, and the wall of described lamp sleeve pipe is processed with asperities to improve the uniformity of light refraction.

Described control circuit comprises charging module, discharge module, three parts of frequency-variable module, and frequency-variable module is electrically connected with charging module and discharge module respectively.

Described control circuit also includes the switching circuit module, and the switching circuit module is connected with charging module and discharge module.

This cold cathode luminous source can be used the light source as solar energy lamp, is connected with solar cell, and be the electric energy luminous lighting by conversion of solar energy.

This cold cathode luminous source also can be used as the lighting source in the life staying idle at home except that the light source that can be used as solar energy lamp, to substitute existing incandescent lamp and electricity-saving lamp.

The operation principle of the utility model cold cathode luminous source is: input dc power or alternating current, pass through control loop, two ends at cold cathode lamp produce high frequency, high pressure, impel gas ionization conduction in the fluorescent tube, electric current sends ultraviolet ray, ultraviolet ray exited tube inner wall light-emitting phosphor is to reach the purpose of illumination.Cold cathode luminous source relies on the tungsten electrode discharge, is different from other fluorescent tube; Its electrode adopts special alloy to make, and scribble particular matter, to guarantee to have electron emissivity preferably, and can alleviate splatter loss, and make electrode prolonged not bad, guaranteed the long-life of CCFL and impact resistance (Switching Power Supply 200,000 times to several nothings influences of lamp life-span) continuously, adopt high-quality fluorescent material in the pipe, it is minimum that the light decay of lamp is dropped to, even after turning on light thousands of hours, still keeps higher brightness.

The utility model has following advantage and effect with respect to prior art:

(1) luminous element of this cold cathode luminous source adopts cold cathode light pipe (CCFL), and this cold cathode light pipe is different with the discharge principle of other fluorescent tubes, does not have filament in its light pipe, does not need the preheating discharge, so compare more electricity saving; The electrode of cold cathode light pipe is made by special tungsten alloy, and tungsten alloy is high temperature resistant, and long-term use still can keep the stability of the physical and chemical performance of electrode, the problem of the disintegration of filament can not occur; The cold cathode light pipe adopts Bohemian glass to improve heat resistance and minimizing is expanded with heat and contract with cold, thereby further prolongs its useful life, and above-mentioned technical characterictic makes surpass more than 5 years, far above existing incandescent lamp and electricity-saving lamp light source the continuous useful life of cold cathode luminous source.

(2) this cold cathode luminous source has adopted the tungsten electrode and the Bohemian glass of particular design, so cold cathode luminous source can start repeatedly fast, can use more than 200,000 times when the ON/OFF frequency is 10 seconds/time.

(3) the Bohemian glass heatproof height of this cold cathode luminous source can reach 800 ℃, and is higher by 22% than simple glass, the coefficient of expansion is low (has only 40 * 10 ^-7), lower by 40% than simple glass, light pipe is difficult for gas leakage, so the life-span of cold cathode luminous source can reach several times to tens times of common fluorescent tube.

(4) impurity contents such as the sodium in this cold cathode luminous source Bohemian glass, lead are extremely low, so the light transmittance height, what charge in the pipe is to generally acknowledge top-quality Japanese three primary colors fluorescent powder at present in the world, the luminous intensity height, light decay is little, and the colour temperature performance is good, and the optical property of light pipe is better than common fluorescent tube.

(5) this cold cathode luminous source light firing angle can reach 360 degree (whole circumference), by the lamp holder interior reflective surface light is dispersed on the wider ground of scope equably, is suitable as lighting source.

Description of drawings

Fig. 1 is the structural representation of the utility model cold cathode luminous source.

Fig. 2 is the control circuit figure of cold cathode luminous source shown in Figure 1.

Embodiment

Below in conjunction with embodiment the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.

Embodiment 1

Concrete structure of the present utility model as shown in Figure 1, as seen from Figure 1, this cold cathode luminous source comprises cold cathode light pipe 1, lamp sleeve pipe 2, lamp socket 4 and control circuit board (not shown in figure 1), cold cathode light pipe 1 is positioned at the lamp sleeve pipe 2 that wall is processed with asperities 2-1, its the two poles of the earth 1-1 stretches out from lamp holder 3 both sides, lamp holder 3 both sides in addition is provided with projection 3-1, described projection 3-1 can match with the groove 4-1 in lamp socket 4 endoporus and be connected and fixed cold cathode light pipe 1 in lamp socket 4, when cold cathode light pipe 1 is connected with lamp socket 4, its the two poles of the earth (or four utmost points, promptly being provided with two cold cathode light pipes 1) 1-1 also can insert two (or four) jack 4-2 and line 5 conductings on the lamp socket 4, and lamp socket 4 is by line 5, plug 6 is connected with control circuit board; The circuit of described control circuit board comprises charging module, discharge module, three parts of frequency-variable module as shown in Figure 2, and frequency-variable module is electrically connected with charging module and discharge module respectively; Wherein charging module is formed by connecting by D2 and storage battery (Battery), and discharge module is formed by connecting with D1, C1, L1 by storage battery (Battery), and frequency-variable module is made of L2, L3, L4; The switching circuit control that the whole charging and discharging process is made up of triode Q1, Q2, its key electrical is the resistance of R1.The operation principle of entire circuit is: daytime, solar radiation was on solar cell (SolarBattery), pass through opto-electronic conversion, produce electric energy, be stored in storage battery (Battery) lining through D2, when extraneous light is very dark (evening), solar cell (Solar Battery) does not produce voltage drop, storage battery externally discharges through the control circuit that Q1, Q2 form, by C1 filtering, via L1, L2, L3 vibration, on L4, produce high frequency voltage, by the high frequency of crossing of C3, finally produce high-frequency and high-voltage, impel the CCFL conduction luminous at cold cathode luminous source (CCFL) two ends.

This cold cathode luminous source can be used the light source as solar energy lamp, is connected with solar cell, and be the electric energy luminous lighting by conversion of solar energy.This cold cathode luminous source also can be used as the lighting source in the life staying idle at home except that the light source that can be used as solar energy lamp, to substitute existing incandescent lamp and electricity-saving lamp.

According to test, be the light source of 5W power equally, this cold cathode lamp has good energy-conserving effect (than electricity-saving lamp also energy-conservation about 3%), brightness height (pipe face brightness＞16000mCD), light firing angle big (360 °), luminous flux height (＞170 lumen) and long service life characteristics such as (＞15000 hours) than electricity-saving lamp and LED, can satisfy the specific (special) requirements of solar energy lamp, specific performance and index see Table 1.

Table 1

By table 1 as can be seen, the combination property of cold cathode lamp is relatively good in three kinds of light sources, though more slightly inferior than LED aspect useful life, to use every day 10 hours, cold cathode lamp is still available more than 4 years, exceeds more than 18 times than electricity-saving lamp.Though exceed about 5% than cold cathode lamp at electricity-saving lamp aspect the luminous flux, the power ratio electricity-saving lamp of cold cathode lamp is low 8%, all is that the cold cathode lamp performance is more excellent in others.

Claims

1, a kind of cold cathode luminous source is characterized in that: comprise cold cathode light pipe, lamp socket, control circuit, the cold cathode light pipe is installed on the lamp socket, and lamp socket is connected with control circuit.

2, cold cathode luminous source according to claim 1 is characterized in that: include the lamp sleeve pipe, the cold cathode light pipe is arranged in the lamp sleeve pipe.

3, cold cathode luminous source according to claim 2 is characterized in that: the wall of described lamp sleeve pipe is processed with asperities.

4, cold cathode luminous source according to claim 1 is characterized in that: described control circuit comprises charging module, discharge module, three parts of frequency-variable module, and frequency-variable module is electrically connected with charging module and discharge module respectively.

5, cold cathode luminous source according to claim 4 is characterized in that: described control circuit includes the switching circuit module, and the switching circuit module is connected with charging module and discharge module.