CN101826439B - Dielectric electrode and gas discharge lamp tube - Google Patents
Dielectric electrode and gas discharge lamp tube Download PDFInfo
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- CN101826439B CN101826439B CN2009100081012A CN200910008101A CN101826439B CN 101826439 B CN101826439 B CN 101826439B CN 2009100081012 A CN2009100081012 A CN 2009100081012A CN 200910008101 A CN200910008101 A CN 200910008101A CN 101826439 B CN101826439 B CN 101826439B
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- dielectric electrode
- thickness
- discharge lamp
- gas discharge
- body region
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Abstract
The invention provides a dielectric electrode and a gas discharge lamp tube using the same; the dielectric electrode comprises a hollow cylindrical body having a step part; and the body is made of dielectric material. The body comprises a main body region having a first thickness, and a tube body connection end having a connection part adjacent to the main body region; and the connection part has a second thickness not less than the first thickness.
Description
Technical field
The present invention is about a kind of dielectric electrode (dielectric electrode) and a kind of gas discharge lamp tube that uses this dielectric electrode.
Background technology
In recent years, along with LCD and lighting industry develop rapidly, for the requirement of fluorescent tube in the backlight module and the general lighting fluorescent tube also useful life and the luminous efficiency of increasingly stringent, particularly fluorescent tube.
Fig. 1 shows a traditional cathode fluorescent tube 10, comprising: one be coated with fluorophor 12 glass tube 14, bring out gas 16, mercury atom 18 and pair of electrodes 20.Wherein, electrode 20 is sealed in that inner and these electrode 20 ends of cathode fluorescent tube 10 have that a seal wire 22 extends out in the cathode fluorescent tube 10 and is connected the lead (figure is demonstration) of power supply with one interconnected, to light fluorescent tube.Generally speaking, the seal wire in the cathode fluorescent tube 10 22 is to use the mode of welding or cladding copper strip to interconnect with the lead of power supply.Yet, no matter be that the welding or the connected mode of cladding copper strip all need via complicated procedure of processing and the normal bad problem of processing that takes place.For example, if use welding manner, the dry joint that failure welding caused, the high temperature that when lighting a lamp, is produced may conduct electricity end points and connect lead partly scolding tin and cause and open circuit.If the mode of using copper strips to coat then need be careful the issuable point discharge in copper strips acute angle place.
On the other hand; In backlight module; Each inverter (inverter) can only drive one to two cathode fluorescent tube, and when display maximized, the fluorescent tube number of use also increased thereupon; That is need more inverter, make the total consumption power of backlight module and temperature all improve a lot of.Therefore, dealer's utmost point need develop a kind of gas discharge lamp tube that can be used for improving the problems referred to above.
Summary of the invention
One of the object of the invention makes gas discharge lamp tube have preferable product yield for to provide a kind of structure firm dielectric electrode.
Another object of the present invention is that a kind of gas discharge lamp tube that is easy to the discharge space of control electrode is provided.
Another purpose of the present invention is that a kind of gas discharge lamp tube that can assemble easily is provided.
Another purpose more of the present invention is that a kind of gas discharge lamp tube with low start voltage, long-life, high briliancy is provided.
For reaching above-mentioned and other purposes, one embodiment of the invention mainly provide a kind of dielectric electrode, and it comprises that one has the body of the hollow cylindrical of a stage portion, and this body is made up of a dielectric material.Above-mentioned body comprises that one has the body region of first thickness, and a body link has a junction and be adjacent to body region, and this connecting portion has second thickness that is not less than first thickness.
Another embodiment of the present invention then provides a kind of gas discharge lamp tube, and it comprises that one has the hollow tube of first end and second end, and is connected respectively to first end of this hollow tube and first dielectric electrode and second dielectric electrode of second end.First dielectric electrode comprises that one has the body of the hollow cylindrical of a stage portion; This body comprises that one has the body region of first thickness; And one the body link have a junction and be adjacent to body region, and this connecting portion has second thickness that is not less than first thickness.
For letting above-mentioned and other purposes of the present invention, characteristic and the advantage can be more obviously understandable, the hereinafter spy enumerates preferred embodiment, and conjunction with figs., elaborates as follows:
Description of drawings
Fig. 1 shows the rough schematic of a traditional cathode fluorescent tube;
Fig. 2 to Fig. 7 shows the simple cross sectional side view of the dielectric electrode that provides according to different embodiments of the invention respectively; And
Fig. 8 A and Fig. 8 B show the gas discharge lamp tube that provides according to one embodiment of the invention simple cross sectional side view in the front and back that seal processing procedure respectively.
The main element symbol description
10 cathode fluorescent tubes
12 fluorophor
14 glass tubes
16 bring out gas
18 mercury atoms
20 electrodes
22 seal wires
30,30 ', 301,302,303,304,305 dielectric electrodes
32 bodies
34 body region
36 body links
The connecting portion of 38 body links
40 exhaust ends
The connecting portion of 42 exhaust ends
44 conducting objects
46 bodies are with respect to an end of body link
50 gas discharge lamp tubes
52 hollow tubes
First end of 54 hollow tubes
Second end of 56 hollow tubes
58 fluorescent materials
60 blast pipes
62 embeddings envelope thing
64 conductive rubber covers
66 perforation
68 assemblies
70 openings
First internal diameter of ID1 body region
Second internal diameter of ID2 body link
The 3rd internal diameter of ID3 exhaust end
First external diameter of OD1 body region
Second external diameter of OD2 body link
The 3rd external diameter of OD3 exhaust end
S, S ' stage portion
First thickness of T1 body region
Second thickness of the connecting portion of T2 body link
The 3rd thickness of the connecting portion of T3 exhaust end
Embodiment
Because traditional cathode fluorescent tube often needs via complicated procedure of processing connection electrode seal wire and power lead; Therefore the bad problem of processing takes place easily; And because each inverter of conventional art can only be in order to drive one to two cathode fluorescent tube, it is not good therefore to assemble convenience.The present invention mainly provides a kind of dielectric electrode and gas discharge lamp tube in order to improving above-mentioned shortcoming, and the structure of the dielectric electrode that is provided is firm, thereby makes and comprise that the gas discharge lamp tube of this dielectric electrode has preferable product yield.The present invention lifts some embodiment of row, and details are as follows, and wherein the components identical symbolic representation is identical or have the element of identical function, and appended relevant drawings is not drawn according to actual ratio, and its effect only is to express architectural feature of the present invention.
At first, Fig. 2 shows the simple cross sectional side view according to the dielectric electrode 30 that one embodiment of the invention provided.Dielectric electrode 30 comprises that one has the body 32 of the hollow cylindrical of stage portion (S, S '), and described stage portion refers to the surface height difference rank (shown in S) or the protrusion (shown in S ') of body 32.The body link 36 that the body 32 of dielectric electrode 30 comprises body region 34 and is used to connect the fluorescent tube body is adjacent to body region 34 and body link 36 has connecting portion 38.The body region 34 of dielectric electrode 30 has first thickness T 1; The connecting portion 38 of body link 36 then has second thickness T 2; Because body link 36 is for being used to connect an openend of fluorescent tube body; When its second thickness T 2 is not less than first thickness T 1, that is second thickness T 2 is more than or equal to first thickness T 1, and then electrode structure will be comparatively firm.
In the present embodiment; The body region 34 and the body link 36 of dielectric electrode 30 have homogeneous thickness respectively; Wherein body region 34 has first inner diameter, ID 1 and the first external diameter OD1; Body link 36 then has second inner diameter, ID 2 greater than first inner diameter, ID 1, and greater than the second external diameter OD2 of the first external diameter OD1.Because body link 36 has internal diameter and/or the external diameter that is different from body region 34, thereby can form the stage portion S on difference in height rank on the surface of body 32, it is between the body region 34 and body link 36 of body 32.And in the present embodiment; Second thickness T 2 of the connecting portion 38 of body link 36 is greater than first thickness T 1 of body region 34; Thereby can relax the stress of switching place of dielectric electrode 30, make that the overall electrode structure is firm, to avoid when electrode uses, causing fracture.
In the present embodiment, the body of dielectric electrode 30 can comprise that also an exhaust end 40 is connected to the other end of body region 34 with respect to body link 36, and the connecting portion 42 of exhaust end 40 is adjacent to body region 34 and have the 3rd thickness T 3.Exhaust end 40 is for can be used for connecting the openend of blast pipe, and when the 3rd thickness T 3 of the connecting portion 42 of exhaust end 40 is not less than first thickness T 1 of body region 34, that is the 3rd thickness T 3 is more than or equal to first thickness T 1, and then electrode structure will be comparatively firm.
In the present embodiment, the exhaust end 40 of dielectric electrode 30 has a homogeneous thickness, and the 3rd thickness T 3 of exhaust end 40 is greater than first thickness T 1 of body region 34.The exhaust end 40 of the dielectric electrode 30 of present embodiment has the 3rd inner diameter, ID 3 and the 3rd external diameter OD3, and wherein the 3rd inner diameter, ID 3 then approximates the first external diameter OD1 of body region 34 less than first inner diameter, ID, 1, the three external diameter OD3 of body region 34.
In the dielectric electrode 30 that present embodiment provided, stage portion S ' comprises the protrusion of the inwall that is positioned at body 32, and it is between the body region 34 and exhaust end 40 of body 32.
The body 32 of dielectric electrode 30 can be made up of a dielectric material; This dielectric material can comprise a ceramic material; The synthetic that for example comprises calcium oxide, magnesia, strontium oxide strontia, zirconia, titanium oxide or its combination, and the composition that can also comprise one or more is selected from one and comprises in the group of manganese oxide, aluminium oxide, chromium oxide and iron oxide.Above-mentioned dielectric material also can comprise a melted glass; For example comprise one or more compositions be selected from one comprise silica, boron oxide, sodium oxide molybdena, potassium oxide and aluminium oxide group, with body 32 and the difference of fluorescent tube body on thermal coefficient of expansion that reduces dielectric electrode 30.In this embodiment, the body 32 of dielectric electrode 30 is made up of a glass-ceramic synthetic, and it preferably has a dielectric constant greater than more than 20, and can be integrally formed through for example powder penetrates die casting processing procedure, dryness punching press processing procedure or other modes.
Yet the present invention is not the structure that is subject to the dielectric electrode 30 that the foregoing description provides.For example, Fig. 3 shows the cross sectional side view according to the dielectric electrode 301 that another embodiment of the present invention provided, and Fig. 4 shows the cross sectional side view of the dielectric electrode 302 that is provided according to still another embodiment of the invention.Fig. 3 and Fig. 4 in the dielectric electrode 301 and 302 that shows respectively; The body region 34 of body 32, body link 36 and exhaust end 40 all have homogeneous thickness; And second thickness T 2 of body link 36 is not less than first thickness T 1 of body region 34; The 3rd thickness T 3 of exhaust end 40 also is not less than first thickness T 1 of body region 34, that is second thickness T 2 and the 3rd thickness T 3 can be respectively more than or equal to first thickness T 1.In dielectric electrode shown in Figure 3 301; The 3rd inner diameter, ID 3 of exhaust end 40 and the 3rd external diameter OD3 are respectively greater than first inner diameter, ID 1 and the first external diameter OD1 of body region 34; And in dielectric electrode shown in Figure 4 302, the 3rd inner diameter, ID 3 of exhaust end 40 and the 3rd external diameter OD3 are then respectively less than first inner diameter, ID 1 and the first external diameter OD1 of body region 34.
Fig. 5 shows the cross sectional side view of the dielectric electrode 303 that an embodiment more according to the present invention is provided; The body region 34 of its body 32, body link 36 and exhaust end 40 all have homogeneous thickness, and second thickness T 2 of body link 36 is not less than first thickness T 1 of body region 34.In this embodiment; Because first inner diameter, ID 1 with body region 34 is identical with the first external diameter OD1 respectively with the 3rd external diameter OD3 for the 3rd inner diameter, ID 3 of the exhaust end 40 of dielectric electrode 303, so the 3rd thickness T 3 of exhaust end 40 is identical with first thickness T 1 of body region 34.
Fig. 6 shows the cross sectional side view according to the dielectric electrode 304 that another embodiment provided of the present invention again.With reference to dielectric electrode 304 shown in Figure 6; The body region 34 of body 32 has uniform first thickness T 1; Be not less than first thickness T 1 and body link 36 is adjacent to second thickness T 2 of the connecting portion 38 of body region 34, and the 3rd thickness T 3 that exhaust end 40 is adjacent to the connecting portion 42 of body region 34 also is not less than first thickness T 1.In this embodiment; Body link 36 has respectively by outer second inner diameter, ID 2 and the 3rd inner diameter, ID 3 toward interior convergent with exhaust end 40, thereby this dielectric electrode 304 has bigger tolerance with fluorescent tube body or the blast pipe that tolerable inserts body link 36 and exhaust end 40 subsequently.Yet the inwall of this kind end has the end that incline structure by outer internal diameter toward interior convergent also can be applicable to the dielectric electrode structure that other embodiment of the present invention are provided.
Fig. 7 shows the cross sectional side view according to the dielectric electrode 305 that another embodiment provided of the present invention again.With reference to dielectric electrode 305 shown in Figure 7, wherein the body region 34 of body 32 has uniform first thickness T 1, and body link 36 is adjacent to second thickness T 2 of the connecting portion 38 of body region 34 and is not less than first thickness T 1.Yet in the dielectric electrode shown in this embodiment 305, body 32 is a sealed end with respect to an end 46 of body link 36.
The present invention also provides a kind of gas discharge lamp tube; It utilizes dielectric electrode that the foregoing description the provides electrode as gas discharge lamp tube; Therefore compared to traditional cathode fluorescent tube (cold cathodefluorescent lamp; CCFL) and the external electrode fluorescent lamp pipe (external electrode fluorescentlamp, EEFL), gas discharge lamp tube provided by the present invention has the characteristics of low start voltage, long-life and high briliancy.
Fig. 8 A and Fig. 8 B show the gas discharge lamp tube 50 that provides according to one embodiment of the invention simple cross sectional side view in the front and back that seal processing procedure respectively.Although utilize the described dielectric electrode 30 of Fig. 2 to be the example explanation here; Yet gas discharge lamp tube provided by the present invention also can use the dielectric electrode of being set forth among other embodiment; And the dielectric electrode at the two ends of fluorescent tube body can be identical or different, and the present invention is not as limit.
At first, with reference to Fig. 8 A, gas discharge lamp tube 50 comprises hollow tube 52 and is connected respectively to first end 54 of hollow tube 52 and the dielectric electrode 30 and 30 ' of second end 56.In this embodiment, gas discharge lamp tube 50 is a fluorescent tube, and its hollow tube 52 comprises that an inwall is coated with the linear glass tube of fluorescent material 58, and first end 54 of hollow tube 52 and second end 56 are openend.Yet in other implemented aspects, hollow tube 52 also can be the U-shaped that comprises a bend, L shaped, spirality or other geometric figures.
Because the gas discharge lamp tube 50 that present embodiment provided adopts identical dielectric electrode 30 and 30 ', therefore following narration only utilizes dielectric electrode 30 as explanation.At first; With reference to Fig. 8 A; Dielectric electrode 30 has stage portion S and body region 34 and the body link 36 and exhaust end 40 of S ' in order to distinguish separated body 32, and first end 54 of hollow tube 52 preferably is resisted against stage portion S, and the blast pipe 60 of glass material also can be resisted against stage portion S '; So can be easy to control the discharge space of dielectric electrode 30, that is on the whole be the scope shown in the body region 34.The body link 36 and the exhaust end 40 of dielectric electrode 30 coats the outer wall of hollow tube 52 and blast pipe 60 respectively; And because body link 36 and exhaust end 40 all are not less than the thickness of body region 34 respectively with the thickness of the linking part of 34 adjacency of body region; Therefore (for example impose sticker fixedly the time when dielectric electrode 30 and hollow tube 52 and blast pipe 60 in the contact site; And implement a sintering process); Then can relax the stress of switching place of dielectric electrode 30, make gas discharge lamp tube 50 have preferable product yield.
Then, carry out a filling processing procedure, make to comprise a filler in the hollow tube 52, it can for example be one to comprise the mist of an amount of argon, neon, krypton, nitrogen, xenon or its combination.And it is owing to present embodiment can be pressed in the composition of controlling filling gas and fluorescent tube, so optionally mercurous or not mercurous in the filler.
In the present embodiment, after accomplishing the filling processing procedure, the flame of proper temperature capable of using and then with blast pipe 60 partial meltings of glass material, the opening of exhaust end 40 that makes dielectric electrode 30 is via embedding envelope thing 62 and seal.
Employed dielectric electrode 30 does not form electric conducting material in the present embodiment on the outer surface of its body 32, but adopts conductive rubber cover 64 covers to overlay on the outer surface of body region 34, so that the voltage that dielectric electrode 30 is received from external power source.In this embodiment, the lead of an external power source can pass the perforation 66 of conductive rubber cover 64 earlier, then again conductive rubber cover 64 covers is overlayed on the outer surface of body region 34 at least, and the lead of external power source is firmly contacted with conductive rubber cover 64.Yet the present invention also can form electric conducting material with as conducting objects at the outer surface of body 32, and can adopt other modes and the conducting objects on body 32 outer surfaces of the lead of external power source and dielectric electrode 30 is electrically contacted.
In one embodiment, gas discharge lamp tube 50 can be fixed by an assembly 68.Because conductive rubber cover 64 has elasticity; Therefore its opening 70 sizes for assembly 68, or all can have bigger permission for the irregular outer surface of the body 32 of dielectric electrode 30, gas discharge lamp tube 50 more can be fixed in the assembly 68 securely.In addition, because the external diameter of the body link 36 of dielectric electrode 30 is greater than the external diameter of body region 34, so assembly 68 can be resisted against body link 36 places of dielectric electrode 30.Yet in other embodiments, assembly 68 also can have a plurality of openings 70 in order to fixing a plurality of gas discharge lamp tubes 50.
Adopting a kind of benefit of dielectric electrode then is that an inverter capable of using drives many gas discharge lamp tubes; Thereby can reduce the use amount of inverter; And then reduce the cost of overall lamp group and simplify the design of backlight module, be suitable in the application as backlight of LCD, facsimile machine, the employed light source of scanner and general lighting.
The dielectric electrode that the above embodiment of the present invention provided and the size of gas discharge lamp tube can design according to the actual requirements.Although the present invention by several preferred embodiments openly as above; Right its is not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (20)
1. dielectric electrode, it is applied to a gas discharge lamp tube, and is suitable for applying a voltage for the gas in this gas discharge lamp tube, comprising:
One has the body of the hollow cylindrical of a stage portion, and this body is made up of a dielectric material, and wherein this body comprises:
One body region has one first thickness; And
One body link has one first connecting portion and is adjacent to this body region, is not less than this first thickness and this first connecting portion has one second thickness.
2. dielectric electrode according to claim 1; Wherein this body also comprises an exhaust end; This exhaust end has one second connecting portion and is adjacent to the other end of this body region with respect to this body link, and this second connecting portion has one the 3rd thickness and is not less than this first thickness.
3. dielectric electrode according to claim 2, wherein this second thickness, the 3rd thickness are evenly with this first thickness and equate.
4. dielectric electrode according to claim 1, wherein this body region has one first internal diameter, and this body link has one second internal diameter greater than this first internal diameter.
5. dielectric electrode according to claim 1, wherein this body region has one first external diameter, and this body link has one second external diameter greater than this first external diameter.
6. dielectric electrode according to claim 1, wherein this stepped portions is between this body region and this body link of this body.
7. dielectric electrode according to claim 2, wherein this stepped portions is between this body region and this exhaust end of this body.
8. dielectric electrode according to claim 1, wherein this stage portion of this body comprises that a protrusion is positioned at an inwall of this body.
9. dielectric electrode according to claim 1, wherein this body is a sealed end with respect to an end of this body link.
10. dielectric electrode according to claim 1, wherein this body link has by an outer internal diameter toward interior convergent.
11. dielectric electrode according to claim 1, it comprises that also a conducting objects is positioned at an outer surface of this body region of this body.
12. dielectric electrode according to claim 11, wherein this conducting objects comprises that cover overlays on a conductive rubber cover of this outer surface.
13. a gas discharge lamp tube comprises:
One hollow tube has one first end and one second end, and wherein gas is positioned at this hollow tube; And
One first dielectric electrode and one second dielectric electrode; Be connected respectively to this first end and this second end of this hollow tube; This first dielectric electrode and this second dielectric electrode are suitable for applying a voltage difference for this gas; Wherein this first dielectric electrode comprises a body of the hollow cylindrical with a stage portion, and this body comprises:
One body region has one first thickness; And
One body link is connected to this first end of this hollow tube, and this body link has one first connecting portion and is adjacent to this body region, is not less than this first thickness and this first connecting portion has one second thickness.
14. gas discharge lamp tube according to claim 13; Wherein this body also comprises an exhaust end; This exhaust end has one second connecting portion and is adjacent to the other end of this body region with respect to this body link, and this second connecting portion has one the 3rd thickness and is not less than this first thickness.
15. gas discharge lamp tube according to claim 13, wherein this body region has one first internal diameter, and this body link has one second internal diameter greater than this first internal diameter.
16. gas discharge lamp tube according to claim 13, wherein this body region has one first external diameter, and this body link has one second external diameter greater than this first external diameter.
17. gas discharge lamp tube according to claim 13, wherein this stepped portions is between this body region and this body link of this body, and this first end of this hollow tube is resisted against this stage portion.
18. gas discharge lamp tube according to claim 13, wherein this body link has by an outer internal diameter toward interior convergent.
19. gas discharge lamp tube according to claim 13, wherein this dielectric electrode comprises that also a conducting objects is positioned at an outer surface of this body region of this body.
20. gas discharge lamp tube according to claim 13, wherein this body link coats an outer wall of this first end of this hollow tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100081012A CN101826439B (en) | 2009-03-02 | 2009-03-02 | Dielectric electrode and gas discharge lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100081012A CN101826439B (en) | 2009-03-02 | 2009-03-02 | Dielectric electrode and gas discharge lamp tube |
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| Publication Number | Publication Date |
|---|---|
| CN101826439A CN101826439A (en) | 2010-09-08 |
| CN101826439B true CN101826439B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100081012A Expired - Fee Related CN101826439B (en) | 2009-03-02 | 2009-03-02 | Dielectric electrode and gas discharge lamp tube |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI483285B (en) * | 2012-11-05 | 2015-05-01 | Ind Tech Res Inst | Dielectric barrier discharge lamp and fabrication method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539157A (en) * | 2001-08-06 | 2004-10-20 | 皇家飞利浦电子股份有限公司 | Low-pressure gas discharge lamps |
| CN1801455A (en) * | 2006-01-10 | 2006-07-12 | 东南大学 | High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method |
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2009
- 2009-03-02 CN CN2009100081012A patent/CN101826439B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539157A (en) * | 2001-08-06 | 2004-10-20 | 皇家飞利浦电子股份有限公司 | Low-pressure gas discharge lamps |
| CN1801455A (en) * | 2006-01-10 | 2006-07-12 | 东南大学 | High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method |
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| CN101826439A (en) | 2010-09-08 |
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Effective date of registration: 20130228 Address after: Taiwan, Hsinchu, China Science Park, industrial road, No. three, east 3 Patentee after: Lextar Electronics Corp. Address before: Hsinchu County, Taiwan, China Patentee before: Wellypower Electrics Co., Ltd. |
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