CN2497427Y - Cold-cathode fluorescence lamp tube - Google Patents
Cold-cathode fluorescence lamp tube Download PDFInfo
- Publication number
- CN2497427Y CN2497427Y CN 01234287 CN01234287U CN2497427Y CN 2497427 Y CN2497427 Y CN 2497427Y CN 01234287 CN01234287 CN 01234287 CN 01234287 U CN01234287 U CN 01234287U CN 2497427 Y CN2497427 Y CN 2497427Y
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- niobium
- tube
- lamp
- fluorescent tube
- electrode
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Abstract
A cold-cathode fluorescent lamp comprises a glass shell, phosphor coated on the inner wall of the glass shell, gas enclosed in the lamp and an electrode arranged on the end of the lamp, wherein, the electrode comprises electrode wires packed on the end of the lamp, both ends of the electrode wires stretch towards the inside and the outside of the lamp, the electrode also comprises a Nb/Nb alloy tablet or a Nb/Nb alloy tube arranged on the electrode wire inside the lamp. According to the cold-cathode fluorescent lamp of the utility model, the electrode adopts the Nb/Nb alloy tablet or the Nb/Nb alloy tube made of Nb/Nb alloy material with higher melting point, so the working current of the lamp can increase about twofold, the service life of the lamp can reach ten thousand hours or so, and the application range is greatly enlarged.
Description
Technical field
The utility model relates to gaseous discharge lamp, relates in particular to a kind of cathode fluorescent tube.
Background technology
Cathode fluorescent tube because of its luminous intensity height, luminous evenly, fluorescent tube can be done superfinely and can make different shape, so obtained extensive application at present in fields such as LCD, scanner, automobile instrument panel, miniature advertisement lamp box and picture frame making.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 cathode fluorescent tube is more and more wider, people require to provide power output bigger, that is the higher cathode fluorescent tube of luminosity.
Existing cathode fluorescent tube as shown in Figure 1, it comprises glass shell 2, is coated in the fluorescent material 4 on the glass shell inwall, encloses the gas (for example neon is argon-mixed and mercury vapour) 5 in the pipe, and the electrode 1 that is arranged on lamp tube end.Wherein, electrode is one of parts of most critical in the cathode fluorescent tube, and it is being born fluorescent tube energising, emitting electrons, sets up electromagnetic field, heating fluorescent tube etc. is all multi-functional.Therefore, the quality of fluorescent tube performance is relevant with the material of electrode to a great extent.At present the electrode 1 that generally uses in cathode fluorescent tube comprises the wire electrode (tungsten filament or Dumet wire) 11 that is encapsulated in lamp tube end and is welded on nickel pipe or nickel tube 3 on the fluorescent tube medial electrode silk 11.Because nickel pipe or nickel tube are to draw through vast scale compression back to form, and belong to compact metal, so its surface area is subjected to the restriction of fluorescent tube internal diameter and electrode length, the surface area of real work is big inadequately.Simultaneously, the fusing point of nickel only is about 1453 degree Celsius, can not bear the impact that big lamp current reaches stronger electron stream when lighting a lamp work.Therefore, the operating current of above-mentioned fluorescent tube generally is confined to about 5 milliamperes.As being increased to about 10 milliamperes, then the working life of fluorescent tube will reduce greatly.Generally after work 2000 to 3000 hours, gently then lamp tube ends is seriously turned black, and lighting tube brightness obviously descends; Heavy then fluorescent tube damages, and can not work.
Summary of the invention
Technical task to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, and the cathode fluorescent tube of a kind of luminosity height and long working life is provided.
According to the utility model, a kind of cathode fluorescent tube is provided, it comprises glass shell, be coated in the fluorescent material on the glass shell inwall, enclose the gas in the pipe, and the electrode that is arranged on lamp tube end, described electrode comprises the wire electrode that is encapsulated in lamp tube end, inboard and the fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode, described electrode also comprises niobium/niobium alloy sheet or the niobium/niobium alloy tube that is arranged on the fluorescent tube medial electrode silk.
According to cathode fluorescent tube of the present utility model, cellular niobium/niobium alloy sheet or the niobium/niobium alloy tube of described niobium/niobium alloy sheet or niobium/niobium alloy tube for being processed into by powder metallurgy.
According to cathode fluorescent tube of the present utility model, described niobium alloy sheet or niobium alloy tube niobium alloy sheet or niobium alloy tube for making by niobium-tantalum-titanium alloy, niobium-tantalum-zircaloy, niobium-vanadium-titanium alloy, niobium-vanadium-zircaloy, niobium-titanium alloy or niobium-zircaloy.
According to cathode fluorescent tube of the present utility model, because niobium and niobium alloy sheet or niobium and niobium alloy tube that its electrode has adopted higher niobium of fusing point and niobium alloy material to make, so the operating current of fluorescent tube can double, it is about more than 10,000 hours that the working life of fluorescent tube can reach, and expanded its range of application greatly.
Description of drawings
Hereinafter with reference to drawings and Examples cathode fluorescent tube of the present utility model is described in further detail.Identical or corresponding parts are represented with identical reference number in the accompanying drawing, and above-mentioned purpose, feature and advantage with other of the present utility model will embody more clearly in the following description.
Fig. 1 is the structural representation of the cathode fluorescent tube of expression prior art.
Fig. 2 is the structural representation of expression according to the cathode fluorescent tube of first embodiment of the present utility model.
Fig. 3 is the structural representation of expression according to the cathode fluorescent tube of second embodiment of the present utility model.
Embodiment
Fig. 2 is the structural representation according to the cathode fluorescent tube of first embodiment of the present utility model.Referring to Fig. 2, cathode fluorescent tube of the present utility model comprises glass shell 2, be coated in the fluorescent material 4 on glass shell 2 inwalls, enclose the gas 5 in the pipe, and the electrode 1 that is arranged on lamp tube end, described electrode comprises the wire electrode 11 that is encapsulated in lamp tube end, the inboard and fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode 11.Different with cathode fluorescent tube shown in Figure 1 is that cathode fluorescent tube of the present utility model adopts niobium and niobium alloy sheet 7 alternative conventional nickel pipe or the nickel tubes 3 for example be processed into powder metallurgy for example to be arranged on the wire electrode 11 of fluorescent tube inboard by welding.
Since niobium and niobium alloy and have good welding performance such as the wire electrode of tungsten one class, thereby the welding between niobium and niobium alloy sheet 7 and the wire electrode 11 is quite firm, can not come off, and electric conductivity is good.In addition,, can reach 2468 degree Celsius, and have stronger electron emissivity, can bear stronger electron bombardment, so in use allow by bigger operating current because niobium alloy has the fusing point higher than nickel alloy.Above-mentioned niobium of the present utility model and niobium alloy sheet 7 for example adopt typical powder metallurgical technique to be processed into, and it is a kind of cavernous goods, and the nickel pipe of the same specification of its surface area ratio or nickel tube are big more than 2 to 20 times.Simultaneously, the surface coating of cavernous niobium and niobium alloy sheet 7 as easy as rolling off a log absorptions reduction electronics emission levels can make itself and matrix strong bonded, and can make it step by step in the long-term work process, discharge lentamente.
The alloy composition of above-mentioned niobium alloy sheet 7 for example can be selected from following group:
Niobium 〉=80%/tantalum (or vanadium) is (0.5-19) % of %/titanium (or zirconium) (1-10)
Niobium 〉=80%/titanium (or zirconium) is % (0.5-20)
Cerium, barium, calcium or the caesium that also can add trace in the above-mentioned component.
Fig. 3 is the structural representation according to the cathode fluorescent tube of second embodiment of the present utility model.The difference of itself and cathode fluorescent tube shown in Figure 2 only is to have substituted niobium and niobium alloy sheet 7 with niobium and niobium alloy tube 8, so its material and structure is not described in detail.
Cathode fluorescent tube of the present utility model can be worked under 10 to 15 milliamperes of electric currents for a long time, and the brightness of fluorescent tube can double.Simultaneously, the working life of fluorescent tube can reach about more than 10,000.
Example 1
The straight pipe type cathode fluorescent tube, 2.6 millimeters of fluorescent tube external diameters, 2.0 millimeters of fluorescent tube internal diameters, 253 millimeters of fluorescent tube length use the niobium alloy sheet to be welded on the tungsten filament as electrode and sealing-in on borosilicate glass tube.The glass tube inwall scribbles the fluorescent material of 5800 ° of K, and charges into the argon-mixed and mercury vapour of neon.Fluorescent tube uses the special-purpose loop that lights a lamp, and when beginning to light a lamp, surface of the light tube brightness reaches 36000cd/m under 5 milliamperes of operating currents
2, luminous flux reaches 148Lm.When the fluorescent tube tube current rises to 10 MAHs, lighting tube brightness reaches 52000cd/m
2, luminous flux reaches 210Lm, improves about 45%-42% during respectively than 5 milliamperes of tube currents.Fluorescent tube is after having carried out the quick electrical endurance test that is equivalent to normally light a lamp 1.6 ten thousand hours under 10 milliamperes of electric currents, fluorescent tube is at running current 5 MAHs, and surface brightness is 32000cd/m
2, luminous flux is 96Lm.Tube current rises to 10 MAHs, and surface brightness reaches 49000cd/m
2, luminous flux reaches 160Lm, has improved 53% and 66% than 5 MAHs respectively.When the fluorescent tube tube current is increased to 15 MAHs, surface brightness reaches 55000cd/m
2, luminous flux reaches 199Lm, has improved 72% and 107% respectively.
Example 2
L type cathode fluorescent tube, 2.6 millimeters of fluorescent tube external diameters, 2.0 millimeters of fluorescent tube internal diameters, 250 millimeters of fluorescent tube length use the niobium alloy sheet to be welded on the tungsten filament as electrode and sealing-in on borosilicate glass tube.The glass tube inwall scribbles the fluorescent material of 5800 ° of K, and charges into the argon-mixed and mercury vapour of neon.Fluorescent tube uses the special-purpose loop that lights a lamp, and when beginning to light a lamp, surface of the light tube brightness reaches 36500cd/m under 5 milliamperes of operating currents
2, luminous flux reaches 147Lm.When the fluorescent tube tube current rises to 10 MAHs, surface of the light tube brightness reaches 53000cd/m
2, luminous flux reaches 210Lm, improves about 45%-43% during respectively than 5 milliamperes of tube currents.Fluorescent tube is after having carried out the quick electrical endurance test that is equivalent to normally light a lamp 1.6 ten thousand hours under 10 milliamperes of electric currents, fluorescent tube is at running current 5 MAHs, and recording surface brightness is 33000cd/m
2, luminous flux is 99Lm.Tube current rises to 10 MAHs, and surface brightness reaches 51200cd/m
2, luminous flux reaches 157Lm, has improved 55% and 59% than 5 MAHs respectively.When the fluorescent tube tube current is increased to 15 MAHs, surface brightness reaches 56000cd/m
2, luminous flux reaches 206Lm, has improved 70% and 108% than 5 MAHs respectively.
More than the description of each embodiment of the present utility model is intended to help understanding and understanding to cathode fluorescent tube of the present utility model, in the scope that does not break away from the utility model appended claims, those skilled in the art also can make various conversion and improvement to this, but this conversion and improvement all belong to scope of the present utility model.
Claims (3)
1. cathode fluorescent tube, comprise glass shell, be coated in the fluorescent material on the glass shell inwall, enclose the gas in the pipe, and the electrode that is arranged on lamp tube end, described electrode comprises the wire electrode that is encapsulated in lamp tube end, the inboard and fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode, it is characterized in that described electrode also comprises niobium/niobium alloy sheet or the niobium/niobium alloy tube that is arranged on the fluorescent tube medial electrode silk.
2. cathode fluorescent tube as claimed in claim 1 is characterized in that, cellular niobium/niobium alloy sheet or the niobium/niobium alloy tube of described niobium/niobium alloy sheet or niobium/niobium alloy tube for being processed into by powder metallurgy.
3. cathode fluorescent tube as claimed in claim 1 or 2, it is characterized in that described niobium alloy sheet or niobium alloy tube niobium alloy sheet or niobium alloy tube for making by niobium-tantalum-titanium alloy, niobium-tantalum-zircaloy, niobium-vanadium-titanium alloy, niobium-vanadium-zircaloy, niobium-titanium alloy or niobium-zircaloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234287 CN2497427Y (en) | 2001-09-29 | 2001-09-29 | Cold-cathode fluorescence lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234287 CN2497427Y (en) | 2001-09-29 | 2001-09-29 | Cold-cathode fluorescence lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2497427Y true CN2497427Y (en) | 2002-06-26 |
Family
ID=33647826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01234287 Expired - Lifetime CN2497427Y (en) | 2001-09-29 | 2001-09-29 | Cold-cathode fluorescence lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2497427Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351991C (en) * | 2004-06-25 | 2007-11-28 | 日本电气株式会社 | Cold cathode fluorescent lamp with improved cathode |
| CN102194647A (en) * | 2010-03-19 | 2011-09-21 | 尹梦寒 | Double-end electromagnetic high intensity discharge (HID) |
-
2001
- 2001-09-29 CN CN 01234287 patent/CN2497427Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351991C (en) * | 2004-06-25 | 2007-11-28 | 日本电气株式会社 | Cold cathode fluorescent lamp with improved cathode |
| CN102194647A (en) * | 2010-03-19 | 2011-09-21 | 尹梦寒 | Double-end electromagnetic high intensity discharge (HID) |
| CN102194647B (en) * | 2010-03-19 | 2015-10-07 | 尹梦寒 | Double-end electromagnetism HID lamp |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110929 Granted publication date: 20020626 |