CN1783417A - Mercury-free cold cathode fluorescent lamp - Google Patents
Mercury-free cold cathode fluorescent lamp Download PDFInfo
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- CN1783417A CN1783417A CN 200410084697 CN200410084697A CN1783417A CN 1783417 A CN1783417 A CN 1783417A CN 200410084697 CN200410084697 CN 200410084697 CN 200410084697 A CN200410084697 A CN 200410084697A CN 1783417 A CN1783417 A CN 1783417A
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- mercury
- cold cathode
- cathode fluorescent
- free cold
- fluorescent lamp
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- Discharge Lamp (AREA)
Abstract
This invention relates to a Hg-free cold cathode fluorescence lamp emitting visible light utilizing band-A UV-laser fluorescence powder layer generated by the cathode glow when the gas discharges without using Hg, which does not pollute the environment and can be started up instantly.
Description
Affiliated technical field
The present invention relates to a kind of fluorescent lamp, relate in particular to mercury-free cold cathode fluorescent lamp not mercurous in a kind of lamp.
Background technology
Energy-conservation and life-span longly just is applied to illumination by increasingly extensive to cold-cathode fluorescence lamp because of it, and all contains mercury in known cold-cathode fluorescence lamp and the hot-cathode fluorescent lamp.The combustion back mercury atom that uses as a lamp is excited, and the ultraviolet ray that the mercury atom that excites sends 254nm excites the fluorescent material that is coated on the lamp inwall to produce visible light again.But after fluorescent lamp damages, or the mercury in the lamp can produce severe contamination to environment in it is made.The brightness that contains hg fluorescent lamp is influenced by the interior mercury vapor pressure of lamp, so lamp starts slowly, the brightness of lamp is influenced by ambient temperature, and the consumption of mercury can influence the lamp life-span in the lamp.Carried out the research of non-mercury florescent lamp in recent years, its method that adopts is to utilize xenon gaseous discharge to produce the ultraviolet ray excited its corresponding fluorescent material of C-band of 172nm.But the 172nm ultraviolet ray is because of its wavelength weak point is big to the fluorescent material damage, causes light decay to influence the life-span of fluorescent lamp greatly.
Summary of the invention
For the damage of the pollution that overcomes mercury and short wave ultraviolet to fluorescent material, the present invention aims to provide and does not a kind ofly use mercury, and the ultraviolet ray excited fluorescent material that is coated on the lamp inwall of the long wave A band of utilizing gas discharge to produce produces the mercury-free cold cathode fluorescent lamp with high light photoelectric transformation efficiency of visible light.
The technical solution adopted for the present invention to solve the technical problems is: in glass bulb, seal wire, ballast, lead-in wire and the lamp holder of electrode, stem stem be electrically connected in proper order, be filled with the gaseous mixture of nitrogen or nitrogen and inert gas in the glass bulb, the blowing pressure 0.5Kpa to 10KP, the nitrogen ratio in gaseous mixture is 5% to 100%.The blowing pressure is to select according to the operating current of mercury-free cold cathode fluorescent lamp.Operating current greatly then the blowing pressure is also big.When the blowing pressure not simultaneously, the distance design of two electrodes just should be considered so-called crust Xing Dinglv, be that the electrode distance of starting resistor correspondence in the gas discharge multiply by the blowing pressure (to certain gas) minimum value is arranged, electrode distance generally can be at 0.5 millimeter to 5 millimeters.These are the reason of being familiar with to the lamp producer.The inner gas pressure of the gaseous mixture of nitrogen or nitrogen and inert gas can be 1KPa to 3Kpa in the ordinary course of things.In nitrogen, add the nitrogen of inert gas and the gaseous mixture of inert gas, reduce because of so-called Penning effect makes the starting resistor of mercury-free cold cathode fluorescent lamp.This is the reason of being familiar with to the lamp producer also.The general ratio of nitrogen in gaseous mixture is 12% to 20%.Can reduce ultraviolet radiation when nitrogen ratios is very few, influence the luminous efficiency of mercury-free cold cathode fluorescent lamp, the starting resistor of mercury-free cold cathode fluorescent lamp is raise, influence its operate as normal and light efficiency.Inert gas generally is to use argon gas, also can be neon, also can be helium, also can be krypton gas, also can be xenon, also can be the gaseous mixture of its door.
After the mercury-free cold cathode fluorescent lamp energized, place restrictions on electric current by ballast, be fixed between the electrode on the seal wire of stem stem glow discharge takes place, because the gas in the lamp chamber is the gaseous mixture of nitrogen or nitrogen and inert gas, so give off the strong A band ultraviolet ray of nitrogen-atoms at the negative brightness of the negative electrode of electrode surface during discharge, ultraviolet main wavelength is 337nm and 357nm, also has 316nm, 378nm, 400nm in addition.Ultraviolet ray excited coated makes it send visible light at the phosphor powder layer that glass bulb inner surface and excitation wavelength meet above wavelength, and cold-cathode fluorescence lamp is lighted.
The shape of glass bulb can be spherical, also can be candle, also can be pyriform, also can be mushroom-shaped, also can be taper and oval-shaped, is fit to each one hobby.Glass bulb can be transparent, also can be painted and scattering, to be used for various occasions.Glass bulb can be directly installed on the lamp holder, and small-sized ballast is placed in the lamp holder; Or between glass bulb and lamp holder, be equipped with lay ballast shell to hold bigger ballast.Ballast can be a resistance, also can be an electric capacity, also can be an inductance, also can mix connection in series-parallel and form by them, and also can be the ballast of an electronics; Discharging current when being used to start mercury-free cold cathode fluorescent lamp and the work of restriction mercury-free cold cathode fluorescent lamp.The shape of electrode can be plate shaped, also can be hemispheric, also can be the spiral rod, also can be netted shape with columnar, also can be the combination of above shape, to adapt to various glass bulbs and to make as much as possible being radiated on the fluorescent material of ultraviolet ray.Electrode is the electrode of metal, also can be the metal electrode of coated, lining, also can be ceramic electrode.Energy loss when reducing discharge, electrode in order to improve luminous efficiency can select the low metal material of work function or on metal coated electronics powder reduce its work function.The general employing metal that vacuum performance is good, work function is low, sputter is little, as metals such as nickel, iron, nickel-clad iron, stainless steels, its thickness or filament diameter are advisable at 0.1 to 1.5 millimeter.And coated contains the electronics powder of barium monoxide, strontium, calcium thereon.The ceramic electrode that contains electronic emission material in recent years also can be done its electrode.
The invention has the beneficial effects as follows, adopted gas discharge to produce the ultraviolet ray excited fluorescent material of A band and sent visible light.And neither use mercury, and overcome the pollution of mercury to environment, little to the fluorescent material damage again.Mercury-free cold cathode fluorescent lamp is not influenced by mercury vapor pressure can moment to start, the operating frequency height, and brightness is not influenced by ambient temperature, and the life-span is long.Can be used for illumination, advertisement, decoration, also can be used for the demonstration of large-screen picture.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
1. glass bulbs among the figure, 2. phosphor powder layer, 3. lamp chamber, 4.4a. electrode, 5. stem stem, 6. ballast, 7. shell, 8. lamp holder, 9.9a. seal wire, 10.10a. lead-in wire.
Embodiment
In Fig. 1, thickness be 0.2 millimeter nickel electrode (4) that scribbles the electronics powder (4a) at a distance of 1 millimeter, at least two seal wires (9) that are welded in stem stem (5) respectively (9a) go up and an Inductive ballast (6), lead-in wire (10) (10a) and lamp holder (8) order be electrically connected.Be the lamp chamber (3) that is filled with nitrogen or nitrogen and inert gas gaseous mixture in the glass bulb (1), for example charge into the bulb argon (wherein containing 16% nitrogen) of 1.8Kpa.After the energized, place restrictions on electric current by ballast (6), for example making operating current is 15 milliamperes, make the electrode (4) of seal wire (9) on (9a) that is fixed on stem stem (5) glow discharge take place between (4a), because be nitrogen or nitrogen and inert gas gaseous mixture in lamp chamber (3), during discharge electrode (4) (4a) the negative brightness of negative electrode on surface give off the strong 337nm of nitrogen-atoms, the ultraviolet ray of 357nm, ultraviolet ray excited coated makes it send visible light at the phosphor powder layer (2) that glass bulb (1) inner surface and excitation wavelength meet above wavelength, and mercury-free cold cathode fluorescent lamp is lighted.Along with the progress of white light emitting diode, use its light efficiency of mercury-free cold cathode fluorescent lamp of similar fluorescent material, life-span further to improve with the ultraviolet fluorescent powder.
Claims (10)
1. mercury-free cold cathode fluorescent lamp, in glass bulb, seal wire, ballast, lead-in wire and the lamp holder of electrode, stem stem be electrically connected in proper order, on the glass bulb inner surface, phosphor powder layer is arranged, it is characterized in that: the gaseous mixture that is filled with nitrogen or nitrogen and inert gas in the glass bulb, inner gas pressure 0.5KPa to 10Kpa, the nitrogen ratio in gaseous mixture is 5% to 100%.
2. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: the inner gas pressure of the gaseous mixture of nitrogen or nitrogen and inert gas is 1KPa to 3KPa,
3. according to claim 1 or 2 described mercury-free cold cathode fluorescent lamps, it is characterized in that: the ratio of nitrogen in gaseous mixture is 12% to 20%.
4. according to claim 1 or 2 or 3 described mercury-free cold cathode fluorescent lamps, it is characterized in that: inert gas is an argon gas, also can be neon, also can be helium, also can be krypton gas, also can be xenon, also can be the gaseous mixture of its door.
5. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: the shape of glass bulb can be spherical, also can be candle, also can be pyriform, also can be mushroom-shaped, also can be taper and oval-shaped.
6. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: glass bulb can be transparent, also can be painted and scattering.
7. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: the shell of settling ballast can be arranged between glass bulb and lamp holder.
8. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: ballast can be a resistance, also can be an electric capacity, also can be an inductance, also can mix connection in series-parallel and form by them, and also can be the ballast of an electronics.
9. mercury-free cold cathode fluorescent lamp according to claim 1 is characterized in that: the shape of electrode can be plate shaped, also can be hemispheric, also can be the spiral rod, also can be netted shape with columnar.
10. according to according to claim 1 or 9 described mercury-free cold cathode fluorescent lamps, it is characterized in that: electrode is the electrode of metal, also can be the metal electrode of coated, lining, also can be the electrode of pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084697 CN1783417A (en) | 2004-11-30 | 2004-11-30 | Mercury-free cold cathode fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084697 CN1783417A (en) | 2004-11-30 | 2004-11-30 | Mercury-free cold cathode fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1783417A true CN1783417A (en) | 2006-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410084697 Pending CN1783417A (en) | 2004-11-30 | 2004-11-30 | Mercury-free cold cathode fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1783417A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617939A (en) * | 2013-12-16 | 2014-03-05 | 陈涛 | Mixed gas plasma collector tube |
| CN110226106A (en) * | 2016-07-17 | 2019-09-10 | 本-古里安大学B.G.内盖夫技术和应用公司 | Upper converting system for being imaged and communicating |
-
2004
- 2004-11-30 CN CN 200410084697 patent/CN1783417A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617939A (en) * | 2013-12-16 | 2014-03-05 | 陈涛 | Mixed gas plasma collector tube |
| CN110226106A (en) * | 2016-07-17 | 2019-09-10 | 本-古里安大学B.G.内盖夫技术和应用公司 | Upper converting system for being imaged and communicating |
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Addressee: Tu Yanhua Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication |