CN1326216A - Cold-cathode gas discharge device without metallic electrode - Google Patents
Cold-cathode gas discharge device without metallic electrode Download PDFInfo
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- CN1326216A CN1326216A CN 00118941 CN00118941A CN1326216A CN 1326216 A CN1326216 A CN 1326216A CN 00118941 CN00118941 CN 00118941 CN 00118941 A CN00118941 A CN 00118941A CN 1326216 A CN1326216 A CN 1326216A
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- gas discharge
- discharge device
- fluorescent tube
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Abstract
A cold-cathode gas discharge device without metallic electrode has a lamp tube which has such structures of luminous powder and MgO layer on its inner surface, sealed two ends, electric conducting layer on its outer surface, electric connector (two metal caps), and discharge gas in its internal space. Its advantages are simple structure, high efficiency and long service life.
Description
What the present invention relates to is a kind of cold-cathode gas discharge device, does not particularly have the cold-cathode fluorescence lamp and the uviol lamp of metal electrode; Can be used for throwing light on, information shows and the back illumination of liquid crystal display etc.
At present, the cold-cathode fluorescence lamp of prior art includes fluorescent tube, and inside pipe wall has luminescent powder, is filled with discharge gass such as mercury in the pipe, and two ends respectively have a metal electrode and lead-in wire thereof; When adding the ac high-voltage of 10～100KHz between electrode, promptly produce discharge and luminous between electrode.Now be widely used in the back illumination of liquid crystal display etc.
The principle that the cold-cathode fluorescence lamp of prior art utilizes cation bump negative electrode under near the high electric field the negative electrode quickens to produce secondary electron produces electronics, and electronics anode motion then makes gas discharge and produces luminous.This traditional structure, exist following deficiency: at first, cation bump negative electrode can make the cathodic metal sputter, and the metal meeting and the discharge gas that sputter out, mercury for example, be combined to mercury alloy, on lamp tube wall, mercury reduced gradually, promptly " eat up " mercury, can die of old age because of mercury exhausts at last; Second, cold-cathode discharge has higher voltage to fall near negative electrode, for example 130～150 volts, sizable electrical power consumed loss is promptly arranged on negative electrode, it causes cathode temperature to raise, because cathode area is little, the heat of negative electrode dissipates through radiation with after the low-pressure gas around the negative electrode is transmitted on the tube wall again, so the cathodic region temperature is very high, for example can reach more than 110 degrees centigrade, this causes negative electrode and fluorescent tube venting and whole light temperature is raise, and reduces working life; The 3rd, metal electrode cost height, electrode will go between, and lead-in wire easily leaks slowly with glass sealing place and causes waste product, and production process is many, the cost height.
The objective of the invention is to overcome the deficiency of above-mentioned existence, and a kind of no metal electrode and lead-in wire thereof are provided, do not have lead-in wire-glass-sealed cold-cathode gas discharge device.
The objective of the invention is to finish by following technical solution.A kind of cold-cathode gas discharge device without metallic electrode, it mainly includes a tubes, two ends of fluorescent tube are the vacuum seal end, in be filled with discharge gas, described fluorescent tube two end outer walls are provided with outer conducting layer, after adding the High Level AC Voltage of appropriate frequency between two conductive layers, discharge gas promptly produces gas discharge, to produce visible light or ultraviolet light.
Described fluorescent tube is made by Bohemian glass, soft glass or quartz glass, and the inwall of fluorescent tube is provided with luminous bisque, and the ultraviolet excited light-emitting powder that gas discharge produces is with the visible light of generation required color or the ultraviolet ray of required wavelength.
Described outer conducting layer is that electric conducting materials such as silver-colored slurry, tin oxide, tin indium oxide are made, and is provided with metal cap or lead-in wire outside it, is used for being connected with actuator electrical.
The inwall of described outer conducting layer place fluorescent tube is provided with the MgO protective layer, to increase time electron emissivity, reduces cathode drop and guard lamp tube wall.
The present invention also is provided with one section dead end that does not discharge between at least one end of described outer conducting layer and fluorescent tube two sealed ends, it is as the cold junction of electric discharge device.
Description of drawings is as follows:
Fig. 1 is the cross-sectional view of the cold-cathode fluorescence lamp of prior art;
Fig. 2 is the cross-sectional view of the cold-cathode gas discharge device of no metal electrode of the present invention;
Fig. 3 is the cross-sectional view that the cold-cathode gas discharge device of no metal electrode of the present invention has fluorescent tube one end of transparency conducting layer;
Fig. 4 is the cross-sectional view that the cold-cathode gas discharge device of no metal electrode of the present invention has fluorescent tube one end of cold junction;
Below in conjunction with accompanying drawing the present invention is described in detail:
Fig. 1 is the cross-sectional view of the cold-cathode gas discharge lamp of prior art.Fluorescent tube 1 among the figure, luminous bisque 2 is arranged on its inwall, in be filled with discharge gass such as mercury, xenon, argon, neon, fluorescent tube two ends respectively have a metal electrode 3 and lead-out wire 4a and 4b, adding upper frequency when between 4a and 4b is 10～100KHz, and during the voltage of several hectovolts to 1 more than thousand volts, fluorescent tube promptly produces gas discharge, luminescent powder 2 on the ultraviolet ray excited lamp tube wall that gas discharge produces is to produce the visible light of required color.
Fig. 2 is the cross-sectional view of the cold-cathode gas discharge device of no metal electrode of the present invention.Fluorescent tube 5 among the figure, and its two end is a vacuum seal end 6, is filled with discharge gass 7 such as mercury, xenon, neon, argon in the fluorescent tube, and luminous bisque 8 is arranged on the tube inner wall, and the outer wall of fluorescent tube two ends has conductive layer 9, and metal cap 10 or metal lead wire are arranged outside the conductive layer 9; Matcoveredn 11 on the tube inner wall at fluorescent tube two end conductive layers 9 places is made by materials such as MgO, is used to improve time electron emissivity, reduces cathode drop and guard lamp inside pipe wall.Between two end conductive layers 9, add 10～100KHz, during the alternating voltage of hundreds of to 1 more than thousand volt, this alternating current is capacitively coupled in the fluorescent tube through two end conductive layers 9 and tube inner wall formation, make gas generation discharge in the fluorescent tube, the size of described electric capacity is decided by the area of conductive layer 9, the wall thickness and the fluorescent tube material of this place's fluorescent tube, select these parameters, obtain required capacitance easily.Luminescent powder 8 on the ultraviolet ray excited lamp tube wall that gas discharge produces is with the visible light of generation required color or the ultraviolet ray of required wavelength.Luminescent powder 8 also can, i.e. visible light or ultraviolet ray directly produced by gas discharge, as uviol lamp.
Described fluorescent tube 5 can be straight or be curved definite shape, is made by Bohemian glass, soft glass or quartz glass, owing to connect airtight the no metal lead wire in place, technology is simple, the rate of finished products height during particularly with Bohemian glass or quartz glass, has been avoided metal-glass-sealed difficulty.
Described outer conducting layer 9 can be made by silver slurry or electric conducting materials such as other metal or carbon.
Described outer conducting layer 9 also can be made up of transparency conducting layers such as tin oxide or tin indium oxide 12, as shown in Figure 3.And behind electric conducting materials 13 such as silver slurry, be electrically connected with metal cap or metal lead wire, being used to connect moving voltage, described transparency conducting layer can allow luminous 14 also outgoing of discharge generation in the electrode district 12, and at this moment luminous bisque 8 also can be arranged on the inwall of electrode district 12.
Can have in described two sealed ends 6 one section dead end 15 that does not produce gas discharge is arranged between at least one end and the outer conducting layer 9, as shown in Figure 4, be used to do the cold junction of electric discharge device, to improve its hot properties.
The present invention compared with prior art, have simple in structure, cost is low, the life-span is long, luminous efficiency High.
Claims (5)
1, a kind of cold-cathode gas discharge device without metallic electrode, it includes a tubes (5), its two end is vacuum seal end (6), in be filled with discharge gas (7), it is characterized in that on described fluorescent tube (5) the two end outer walls outer conducting layer (9) being arranged, after adding the High Level AC Voltage of appropriate frequency between two conductive layers, discharge gas promptly produces gas discharge, to produce visible light or ultraviolet light.
2, cold-cathode gas discharge device without metallic electrode as claimed in claim 1, it is characterized in that described fluorescent tube (5) made by Bohemian glass, soft glass or quartz glass, be shaped on luminous bisque (8) on the inwall of fluorescent tube, the ultraviolet excited light-emitting powder that gas discharge produces is with the visible light of generation required color or the ultraviolet ray of required wavelength.
3, cold-cathode gas discharge device without metallic electrode as claimed in claim 2, it is characterized in that the outer conducting layer (9) on described fluorescent tube (5) the two end outer walls is that electric conducting materials such as silver-colored slurry, tin oxide, tin indium oxide are made, it is outside equipped with metal cap (10) or lead-in wire, is used for being connected with actuator electrical.
4; cold-cathode gas discharge device without metallic electrode as claimed in claim 3; it is characterized in that described outer conducting layer (9) locates the inwall of fluorescent tube and be provided with MgO protective layer (17),, reduce cathode drop and guard lamp tube wall to increase time electron emissivity.
5, cold-cathode gas discharge device without metallic electrode as claimed in claim 4 is characterized in that being provided with one section dead end that does not discharge (16) between at least one end in described outer conducting layer (9) and two sealed ends (6), and it is as the cold junction of electric discharge device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001189417A CN1152412C (en) | 2000-05-29 | 2000-08-11 | Cold-cathode gas discharge device without metallic electrode |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00235546.9 | 2000-05-29 | ||
| CN 00235546 CN2457735Y (en) | 2000-05-29 | 2000-05-29 | No metal electrode cold cathode gas discharge device |
| CNB001189417A CN1152412C (en) | 2000-05-29 | 2000-08-11 | Cold-cathode gas discharge device without metallic electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1326216A true CN1326216A (en) | 2001-12-12 |
| CN1152412C CN1152412C (en) | 2004-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001189417A Expired - Fee Related CN1152412C (en) | 2000-05-29 | 2000-08-11 | Cold-cathode gas discharge device without metallic electrode |
Country Status (1)
| Country | Link |
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| CN (1) | CN1152412C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346447C (en) * | 2002-03-22 | 2007-10-31 | 三星电子株式会社 | Lamp, method of fabricating the same and liquid crystal display apparatus having the same |
| CN102214545A (en) * | 2010-04-01 | 2011-10-12 | 优志旺电机株式会社 | Fluorescent lamp |
| CN112786432A (en) * | 2021-02-25 | 2021-05-11 | 江苏稳润光电科技有限公司 | External electrode UV lamp tube with transparent electrode |
-
2000
- 2000-08-11 CN CNB001189417A patent/CN1152412C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346447C (en) * | 2002-03-22 | 2007-10-31 | 三星电子株式会社 | Lamp, method of fabricating the same and liquid crystal display apparatus having the same |
| CN102214545A (en) * | 2010-04-01 | 2011-10-12 | 优志旺电机株式会社 | Fluorescent lamp |
| CN112786432A (en) * | 2021-02-25 | 2021-05-11 | 江苏稳润光电科技有限公司 | External electrode UV lamp tube with transparent electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1152412C (en) | 2004-06-02 |
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Owner name: HANGZHOU KENAI LIGHTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GE SHICHAO Effective date: 20080509 |
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Effective date of registration: 20080509 Address after: Hangzhou City, Zhejiang Province, 628 West Road, room 213 No. Patentee after: Hangzhou Kenai Lighting Technology Co. Ltd. Address before: Two Zhejiang city in Hangzhou Province, the Qiuzhi Lane 2 Room 203 Patentee before: Ge Shichao |
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| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU TELIANG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HANGZHOU KENAI LIGHTING TECHNOLOGY CO., LTD. Effective date: 20140514 |
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Effective date of registration: 20140514 Address after: Hangzhou City, Zhejiang province 310012 Wensan Road No. 628, room 218 Patentee after: Hangzhou Teliang Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310012 Wensan Road No. 628, room 213 Patentee before: Hangzhou Kenai Lighting Technology Co. Ltd. |
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Granted publication date: 20040602 Termination date: 20140811 |
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