CN202564183U - Cold cathode gas discharge lamp - Google Patents
Cold cathode gas discharge lamp Download PDFInfo
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- CN202564183U CN202564183U CN2012200990879U CN201220099087U CN202564183U CN 202564183 U CN202564183 U CN 202564183U CN 2012200990879 U CN2012200990879 U CN 2012200990879U CN 201220099087 U CN201220099087 U CN 201220099087U CN 202564183 U CN202564183 U CN 202564183U
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Abstract
The utility model aims to provide a cold cathode gas discharge lamp. The cold cathode gas discharge lamp comprises a lamp tube, discharge electrodes arranged at both ends of the lamp tube, a ballast connected between the discharge electrodes and a power source, and built-in guide poles arranged near an inner wall of the lamp tube. The cold cathode gas discharge lamp is advantaged in that current breakdown of a casing of the transparent lamp tube does not occur easily; and the lamp has a relatively strong output power and very long service life.
Description
Technical field
The utility model relates to a kind of cold-cathode gas discharge lamp.
Background technology
Gaseous discharge lamp is by the commingle discharging of gas, metal vapors or several kinds of gas and metal vapors and alight.Convert electrical energy into a kind of electric light source of light through gas discharge.The kind of gas discharge is a lot, and what use morely is glow discharge and arc discharge (seeing arc discharge).Glow discharge generally is used for neon light and indicator light.Arc discharge can have very strong light output, and lighting source all adopts arc discharge.Fluorescent lamp, high-pressure mercury lamp, sodium vapor lamp and metal halide lamp are to use maximum illuminations to use gaseous discharge lamp.
The cold-cathode gas discharge lamp as a kind of fluorescent lamp because of its luminous intensity high, luminous evenly and fluorescent tube characteristics such as can do superfinely, in fields such as LCD, scanner, automobile instrument panel and picture frame making, obtained extensive application at present.Under normal conditions, it is a kind of miniature intense light source of novelty as the background light source of the said goods.And along with the application of cold-cathode fluorescence lamp is more and more wider, people require to provide working life longer, and power output is bigger, that is the higher cold-cathode fluorescence lamp of luminosity.The cold-cathode gas discharge lamp is as ultra-violet lamp, and people require also to provide that working life is longer, power output is bigger and make and be easy to lamp.
Existing external electrode formula cold-cathode gas discharge lamp adopts glass lamp; Because glass contains different materials such as boron oxide, aluminium oxide and has different dielectric coefficients, its surface capacitance skewness is after the fluorescent tube energising; Electric current forms in weak link easily and punctures, and causes the damage of fluorescent tube.
The utility model content
To the above-mentioned deficiency of prior art, the utility model aims to provide a kind of cold-cathode gas discharge lamp, comprising:
Fluorescent tube;
Sparking electrode is arranged at the two ends of said fluorescent tube;
Ballast is connected between said sparking electrode and the power supply; And
Built-in guidance electrode is arranged near the inwall of said fluorescent tube.
According to a preferred embodiment of the utility model, in above-mentioned cold-cathode gas discharge lamp, the end of said built-in guidance electrode is connected to the ballast loop via impedance device.
According to a preferred embodiment of the utility model, in above-mentioned cold-cathode gas discharge lamp, said built-in guidance electrode comprises and is arranged at this built-in guidance electrode end and the interpole relative with said sparking electrode.
According to a preferred embodiment of the utility model, in above-mentioned cold-cathode gas discharge lamp, the end of said built-in guidance electrode is near said sparking electrode.
A preferred embodiment according to the utility model; In above-mentioned cold-cathode gas discharge lamp; Said built-in guidance electrode comprises first built-in guidance electrode and second built-in guidance electrode; Said impedance device comprises first impedance device and second impedance device, and the first end of said first built-in guidance electrode is near the sparking electrode of said fluorescent tube first end, and the second end of said first built-in guidance electrode is connected to the ballast loop via first impedance device; The first end of said second built-in guidance electrode is near the sparking electrode of said fluorescent tube second end, and the second end of said second built-in guidance electrode is connected to the ballast loop via second impedance device.
According to a preferred embodiment of the utility model, in above-mentioned cold-cathode gas discharge lamp, the spacing between the end of said built-in guidance electrode and the said sparking electrode is 2 to 10mm.
The shell of the Transparent lamp tube of the cold-cathode gas discharge lamp of the utility model be difficult for by electric current puncture, the power output of lamp is strong and have very long useful life.
Should be appreciated that the above generality of the utility model is described and following detailed description all is exemplary and illustrative, and be intended to further explanation is provided for as claimed in claim the utility model.
Description of drawings
Accompanying drawing mainly is to be used to provide the utility model is further understood.Accompanying drawing shows the embodiment of the utility model, and plays the effect of explaining the utility model principle with this specification.In the accompanying drawing:
Fig. 1 schematically shows the structural representation according to the cold-cathode gas discharge lamp of a preferred embodiment of the utility model.
Embodiment
The embodiment of the utility model will be described with reference to the drawings now in detail.
Fig. 1 schematically shows the structural representation according to the cold-cathode gas discharge lamp of a preferred embodiment of the utility model.As shown in Figure 1, the cold-cathode gas discharge lamp of the utility model mainly comprises: fluorescent tube M, sparking electrode e, ballast and built-in guidance electrode P.Wherein, sparking electrode is arranged at the two ends of said fluorescent tube, and ballast is connected between said sparking electrode and the power supply.Built-in guidance electrode is arranged near the inwall of said fluorescent tube.
According to a preferred embodiment of the utility model, in above-mentioned cold-cathode gas discharge lamp, the end of said built-in guidance electrode is connected to the ballast loop via impedance device.In addition, said built-in guidance electrode comprises and is arranged at this built-in guidance electrode end and the interpole relative with said sparking electrode.The end of said built-in guidance electrode is near said sparking electrode.
Preferably; In above-mentioned cold-cathode gas discharge lamp; Said built-in guidance electrode comprises first built-in guidance electrode and second built-in guidance electrode; Said impedance device comprises first impedance device and second impedance device, and the first end of said first built-in guidance electrode is near the sparking electrode of said fluorescent tube first end, and the second end of said first built-in guidance electrode is connected to the ballast loop via first impedance device; The first end of said second built-in guidance electrode is near the sparking electrode of said fluorescent tube second end, and the second end of said second built-in guidance electrode is connected to the ballast loop via second impedance device.
In addition, as shown in the figure, and be connected into short circuit, built-in guidance electrode P is provided with near the inwall of fluorescent tube M two lead-out wires of the sparking electrode e of lamp tube end in the pipe cap of fluorescent tube pipe end, and its end, two ends is respectively near the sparking electrode e of lamp tube ends.This guidance electrode for example is made up of nickel sheet, molybdenum, tungsten or other metal material; Two ends for example have an extension to be provided with near the latter towards sparking electrode; It is 220 volts that spacing is between the two for example worked as supply voltage; Supply frequency is 50Hz or 60Hz, and the discharge lamp internal diameter is can be for 2 to 10mm about 17mm, when length is the 1.2m left and right sides, and preferable for example is 3 to 5mm.The body of guidance electrode for example is fixed on the tube inner wall with bead g.When K switch is closed, on the sparking electrode of lamp tube ends, add supply voltage.The sparking electrode at two ends is instantaneous to have shortened arcing distance by means of guidance electrode, make one part of current along guidance electrode (having shunting action) at the fluorescent tube internal circulation.Continuous discharge between sparking electrode and the guidance electrode extension has excited the discharge of mercury vapour in the pipe, thereby has made gaseous discharge lamp get into normal operating conditions.According to the gaseous discharge lamp of this embodiment, need not on sparking electrode, to apply high voltage during starting, thereby can under the state of cold cathode starting, light by the discharge at starting lamp.
Those skilled in the art can be obvious, can carry out various modifications and modification to the above-mentioned exemplary embodiment of the utility model and do not depart from the spirit and the scope of the utility model.Therefore, be intended to make the utility model to cover modification and the modification that drops in appended claims and the come scope thereof to the utility model.
Claims (6)
1. cold-cathode gas discharge lamp comprises:
Fluorescent tube;
Sparking electrode is arranged at the two ends of said fluorescent tube;
Ballast is connected between said sparking electrode and the power supply; And
Built-in guidance electrode is arranged near the inwall of said fluorescent tube.
2. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that the end of said built-in guidance electrode is connected to the ballast loop via impedance device.
3. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that, said built-in guidance electrode comprises and is arranged at this built-in guidance electrode end and the interpole relative with said sparking electrode.
4. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that the end of said built-in guidance electrode is near said sparking electrode.
5. cold-cathode gas discharge lamp as claimed in claim 3; It is characterized in that; Said built-in guidance electrode comprises first built-in guidance electrode and second built-in guidance electrode; Said impedance device comprises first impedance device and second impedance device, and the first end of said first built-in guidance electrode is near the sparking electrode of said fluorescent tube first end, and the second end of said first built-in guidance electrode is connected to the ballast loop via first impedance device; The first end of said second built-in guidance electrode is near the sparking electrode of said fluorescent tube second end, and the second end of said second built-in guidance electrode is connected to the ballast loop via second impedance device.
6. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that, the spacing between the end of said built-in guidance electrode and the said sparking electrode is 2 to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200990879U CN202564183U (en) | 2012-03-16 | 2012-03-16 | Cold cathode gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200990879U CN202564183U (en) | 2012-03-16 | 2012-03-16 | Cold cathode gas discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564183U true CN202564183U (en) | 2012-11-28 |
Family
ID=47213811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200990879U Expired - Fee Related CN202564183U (en) | 2012-03-16 | 2012-03-16 | Cold cathode gas discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564183U (en) |
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2012
- 2012-03-16 CN CN2012200990879U patent/CN202564183U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130316 |