CN100350546C - Cold-cathode fluorescent lamp - Google Patents
Cold-cathode fluorescent lamp Download PDFInfo
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- CN100350546C CN100350546C CNB200510065098XA CN200510065098A CN100350546C CN 100350546 C CN100350546 C CN 100350546C CN B200510065098X A CNB200510065098X A CN B200510065098XA CN 200510065098 A CN200510065098 A CN 200510065098A CN 100350546 C CN100350546 C CN 100350546C
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- electrode assembly
- hollow edged
- edged electrode
- cold
- hollow
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Abstract
The present invention relates to a cold cathode fluorescent lamp which comprises a lamp tube, a first electrode and a second electrode, wherein the first electrode and the second electrode are respectively arranged on both ends of the lamp tube; the first electrode comprises a first tubular electrode component and a second tubular electrode component. The second tubular electrode component is positioned in the first tubular electrode component and is electrically connected to the first tubular electrode component.
Description
Technical field
The invention relates to a kind of charging and discharging pipe, and particularly relevant for a kind of electrode of cold-cathode fluorescence lamp.
Background technology
Backlight module is one of key part and component of display panels.Because liquid crystal itself can't be luminous, backlight module is a light abundant in order to supply brightness and that be evenly distributed, and then makes display panels can demonstrate normal and the well-balanced show image of brightness.
Light source commonly used in the backlight module is cold-cathode fluorescence lamp (Cold Cathode FluorescentLamp; CCFL).Figure 1A shows the schematic diagram of traditional cold-cathode fluorescence lamp.Cold-cathode fluorescence lamp 100 comprises a fluorescent tube 102 and two electrodes 104.This two electrode 104 is configured in fluorescent tube 102 two ends respectively, and fills metal and inert gas in the fluorescent tube 102.The principle of luminosity of cold-cathode fluorescence lamp 100 is similar to general fluorescent lamp, electrode 104 by the rear and front end of fluorescent tube 102 produces electric fields, free electron bump inert gas clashes into the gaseous state mercury in the fluorescent tube again, mercury is sightless ultraviolet ray (UV) radiant energy because of energy level variations discharges, ray behind the tube wall fluorescent material absorbed radiation energy.
Figure 1B shows the schematic diagram of the electrode of traditional cold cathode fluorescent lamp.Shown in Figure 1B, this electrode 104 is a cylindrical metal assembly.The end of this cylindrical metal assembly is connected with electric wire 106, for applying voltage thereon.Yet the electrode surface area of this kind traditional electrode is limited, so problems such as the traditional cold cathode fluorescent lamp has that luminous efficiency is not good, high electrode temperature, high operation voltage and short useful life.
Summary of the invention
Therefore one aspect of the present invention just provides a kind of cold-cathode fluorescence lamp, increases electrode surface area by the shape that changes its at least one electrode, with the luminous efficiency that increases cold-cathode fluorescence lamp, reduce electrode temperature, reduce operating voltage and prolong its useful life.
According to a preferred embodiment of the invention, this cold-cathode fluorescence lamp comprises a fluorescent tube, one first electrode and one second electrode.First electrode and second electrode are installed in the two ends of fluorescent tube respectively.First electrode comprises one first hollow edged electrode assembly and one second hollow edged electrode assembly.The second hollow edged electrode assembly is positioned within the first hollow edged electrode assembly, and is electrically connected at the first hollow edged electrode assembly.
The present invention for example increases the number of hollow edged electrode assembly by the electrode shape that changes the traditional cold cathode fluorescent lamp, increases the surface area of electrode.The surface area of electrode is big more, and then the number of electrons that discharges because of bias voltage is many more, therefore can increase the luminous efficiency of cold-cathode fluorescence lamp.Moreover, increase the electrode surface area that is used to discharge electronics, then use lower operating voltage can obtain enough electronics, electrode temperature also is lowered because of bigger area of dissipation and lower operating voltage, and so can prolong useful life of this cold-cathode fluorescence lamp.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, be described in detail as follows with reference to accompanying drawing:
Figure 1A shows the schematic diagram of traditional cold-cathode fluorescence lamp;
Figure 1B shows the schematic diagram of the electrode of traditional cold cathode fluorescent lamp;
Fig. 2 A shows the schematic diagram of a preferred embodiment of the present invention;
Fig. 2 B is the schematic diagram of first electrode of Figure 1A;
Fig. 3 A to Fig. 3 G is the sectional view of first electrode of Fig. 2 A by hatching AA ';
Fig. 4 A to Fig. 4 C shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of several different openings angles that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described;
Fig. 5 A to Fig. 5 B shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of different length that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described;
Fig. 6 A to Fig. 6 B shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of different connected modes that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described; And
Fig. 7 shows the schematic diagram of another preferred embodiment of first electrode.
Symbol description
100: cold-cathode fluorescence lamp 102: fluorescent tube
104: electrode 106: electric wire
200: cold-cathode fluorescence lamp 202: fluorescent tube
205: the second electrodes of 204: the first electrodes
206: electric wire
214: the first hollow edged electrode assemblies
224: the second hollow edged electrode assemblies
314a, 314b, 314c, 314d, 314e, 314f, 314g: the first hollow edged electrode assembly
324a, 324b, 324c, 324d, 324e, 324f, 324g: the second hollow edged electrode assembly
414a, 414b, 414c: the first hollow edged electrode assembly
424a, 424b, 424c: the second hollow edged electrode assembly
514a, 514b: the first hollow edged electrode assembly
524a, 524b: the second hollow edged electrode assembly
606a, 606b: electric wire
614a, 614b: the first hollow edged electrode assembly
624a, 624b: the second hollow edged electrode assembly
Electrode 706 in 704: the first: electric wire
714: the first hollow edged electrode assemblies
724: the second hollow edged electrode assemblies
734: the three hollow edged electrode assemblies
Embodiment
The present invention improves at least one electrode of cold-cathode fluorescence lamp, makes this electrode have at least two hollow edged electrode assemblies, to increase the surface area of electrode.Electrode surface area is influenced by the gas ion sputter.Therefore, it is of a specified duration more that electrode surface is covered the required time fully by the gas ion sputter, and then its useful life is long more.And its releasable number of electrons of institute of the big more meaning of electrode surface area is many more, and the efficient of discharge is also good more.In addition, electrode surface area is big more, and it is also big more in order to the area that bears the gas ion sputter, so the temperature that is produced on the electrode also can be lower.
Fig. 2 A shows the schematic diagram of a preferred embodiment of the present invention.This cold-cathode fluorescence lamp 200 comprises a fluorescent tube 202, one first electrode 204 and one second electrode 205.First electrode 204 and second electrode 205 are the two ends that are installed in fluorescent tube 202 respectively, and are connected for it is applied voltage with two electric wires 206 respectively.Fig. 2 B is the schematic diagram of first electrode 204 of Figure 1A.First electrode 204 comprises one first hollow edged electrode assembly 214 and one second hollow edged electrode assembly 224.The second hollow edged electrode assembly 224 is positioned within the first hollow edged electrode assembly 214, and is electrically connected at this first hollow edged electrode assembly 214.
In this preferred embodiment, cold-cathode fluorescence lamp 200 also comprises a discharge gas 208, is sealed among the fluorescent tube 202, for the electron collision that is discharged with electrode.The material of the first hollow edged electrode assembly 214 and the second hollow edged electrode assembly 224 can comprise the electrode material that molybdenum, nickel, niobium or other tradition are suitable for.In addition, the surface of the first hollow edged electrode assembly 214 and the second hollow edged electrode assembly 224 can be concavo-convex fluctuating, more to increase both electrode surface areas.The first hollow edged electrode assembly 214 is identical substantially with the opening direction of the second hollow edged electrode assembly 224.Yet, also can have an angle between the opening direction of the first hollow edged electrode assembly 214 and the second hollow edged electrode assembly 224, with the process of optimization discharge.
Moreover second electrode 205 can be shown in Fig. 2 A, has the structure identical with first electrode 204, and promptly second electrode 205 also comprises one first hollow edged electrode assembly 214 and one second hollow edged electrode assembly 224 equally.Perhaps, consider based on equal other of both voltages that second electrode 205 also can have the structure different with first electrode 204, for example second electrode 205 has the structure identical with traditional electrode 104.
Fig. 3 A to Fig. 3 G is the sectional view of first electrode 204 of Fig. 2 A by hatching AA ', in order to the alternate embodiment of several different openings shapes that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described.The opening shape of the first hollow edged electrode assembly can be circle or polygon, and the opening shape of the second hollow edged electrode assembly also can be circle or polygon, and the opening shape of the first hollow edged electrode assembly and the second hollow edged electrode assembly can be identical or different.
As shown in Figure 3A, the opening shape of the first hollow edged electrode assembly 314a is circular, and the opening shape of the second hollow edged electrode assembly 324a also is circular; Or shown in Fig. 3 B, the opening shape of the first hollow edged electrode assembly 314b is a triangle, and the opening shape of the second hollow edged electrode assembly 324b also is a triangle; Or shown in Fig. 3 C, the opening shape of the first hollow edged electrode assembly 314c is square, and the opening shape of the second hollow edged electrode assembly 324c also is square.Even, can be shown in Fig. 3 D, the opening shape of the first hollow edged electrode assembly 314d is square, and the opening shape of the second hollow edged electrode assembly 324d then is circular, and both have different opening shapes.
Except the above-mentioned common opening shape of lifting, the opening shape of the first hollow edged electrode assembly and the second hollow edged electrode assembly also can be other irregular polygon.Shown in Fig. 3 E, the opening shape of the first hollow edged electrode assembly 314e is a cross, and the opening shape of the second hollow edged electrode assembly 324e also is a cross; Or shown in Fig. 3 F, the opening shape of the first hollow edged electrode assembly 314f is irregularly shaped, and the opening shape of the second hollow edged electrode assembly 324f also is irregularly shaped.Even, can be shown in Fig. 3 G, the opening shape of the first hollow edged electrode assembly 314g is irregularly shaped, and the opening shape of the second hollow edged electrode assembly 324g then is square.
Fig. 4 A to Fig. 4 C shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of several different openings angles that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described.The first hollow edged electrode assembly and the second hollow edged electrode assembly can have identical or different opening angle, for example the opening angle of the first hollow edged electrode assembly can greater than, be less than or equal to the opening angle of the second hollow edged electrode assembly.That is to say that the opening of the first hollow edged electrode assembly can outwards enlarge, inwardly dwindles or extend in parallel, and the opening of the second hollow edged electrode assembly also can outwards enlarge, inwardly dwindles or extend in parallel.
Shown in Fig. 4 A, the opening angle of the first hollow edged electrode assembly 414a is less than the opening angle of the second hollow edged electrode assembly 424a; Or shown in Fig. 4 B, the opening angle of the first hollow edged electrode assembly 414b is greater than the opening angle of the second hollow edged electrode assembly 424b; Or shown in Fig. 4 C, the opening angle of the first hollow edged electrode assembly 414c equals the opening angle of the second hollow edged electrode assembly 424c.
Fig. 5 A to Fig. 5 B shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of different length that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described.The first hollow edged electrode assembly and the second hollow edged electrode assembly can have identical or different length, for example the length of the first hollow edged electrode assembly can greater than, be less than or equal to the length of the second hollow edged electrode assembly.
Shown in Fig. 5 A, the length of the first hollow edged electrode assembly 514a is less than the length of the second hollow edged electrode assembly 524a; Or shown in Fig. 5 B, the length of the first hollow edged electrode assembly 514b is greater than the opening angle of the second hollow edged electrode assembly 524b.Perhaps, shown in preceding several embodiment, the length of the first hollow edged electrode assembly 514a can equal the length of the second hollow edged electrode assembly 524a.
In the embodiment shown in above-mentioned Fig. 4 A to Fig. 5 B, the exterior bottom of the second hollow edged electrode assembly directly is connected the inside bottom of the first hollow edged electrode assembly.Yet the different connected modes of other the first hollow edged electrode assembly and the second hollow edged electrode inter-module also can be used among the present invention.Perhaps, the first hollow edged electrode assembly and the second hollow edged electrode assembly structure that also can be one of the forming.
Fig. 6 A to Fig. 6 B shows the schematic diagram of several embodiment of first electrode, in order to the alternate embodiment of different connected modes that the first hollow edged electrode assembly and the second hollow edged electrode assembly are described.
As shown in Figure 6A, the second hollow edged electrode assembly 624a is positioned within the first hollow edged electrode assembly 614a.Yet the first hollow edged electrode assembly 614a is electrically connected on the tube wall of the second hollow edged electrode assembly 624a, and the part of the second hollow edged electrode assembly 624a gives prominence to outside the first hollow edged electrode assembly 614a, and connects electric wire 606a.
Shown in Fig. 6 B, the second hollow edged electrode assembly 624b is positioned within the first hollow edged electrode assembly 614b.Yet the exterior bottom of the second hollow edged electrode assembly 624b does not directly connect the inside bottom of the first hollow edged electrode assembly 614b.Both electrically connect the second hollow edged electrode assembly 624b and the first hollow edged electrode assembly 614b by electric wire 606b.
Fig. 7 shows the schematic diagram of another preferred embodiment of first electrode.Except the above-mentioned first hollow edged electrode assembly and the second hollow edged electrode assembly, first electrode of this preferred embodiment also can comprise another the 3rd hollow edged electrode assembly.In other words, comprise first electrode of plural hollow edged electrode structure, spirit also according to the invention and protection range.
As shown in Figure 7, first electrode 704 comprises one first hollow edged electrode assembly 714, one second hollow edged electrode assembly 724 and one the 3rd hollow edged electrode assembly 734.The second hollow edged electrode assembly 724 is positioned within the first hollow edged electrode assembly 714, and the 3rd hollow edged electrode assembly 734 is positioned within the second hollow edged electrode assembly 724, and the three electrically connects to each other.
In sum, insider's viewable design and specification are required, adjust opening direction, opening shape, opening angle, length or the connected mode of at least two hollow edged electrode assemblies, or more increase the number of hollow edged electrode assembly, so with the luminous efficiency that increases cold-cathode fluorescence lamp, reduce electrode temperature, reduce operating voltage and prolong its useful life.
Though the present invention with a preferred embodiment openly as above; right its is not in order to qualification the present invention, any insider, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (10)
1. cold-cathode fluorescence lamp comprises:
One fluorescent tube;
One first electrode and one second electrode are installed in the two ends of this fluorescent tube respectively, and wherein this first electrode comprises:
One first hollow edged electrode assembly;
One second hollow edged electrode assembly is positioned within this first hollow edged electrode assembly and is electrically connected at this first hollow edged electrode assembly, and wherein the exterior bottom of this second hollow edged electrode assembly of this first electrode is connected the inside bottom of this first hollow edged electrode assembly.
2. cold-cathode fluorescence lamp according to claim 1, wherein this first hollow edged electrode assembly is identical with the opening direction of this second hollow edged electrode assembly.
3. cold-cathode fluorescence lamp according to claim 1, wherein the opening shape of this first hollow edged electrode assembly is circle or polygon.
4. cold-cathode fluorescence lamp according to claim 1, wherein the opening shape of this second hollow edged electrode assembly is circle or polygon.
5. cold-cathode fluorescence lamp according to claim 1, wherein this first hollow edged electrode assembly is identical with the opening shape of this second hollow edged electrode assembly.
6. cold-cathode fluorescence lamp according to claim 1, wherein the concave-convex surface of this first hollow edged electrode assembly rises and falls.
7. cold-cathode fluorescence lamp according to claim 1, wherein the concave-convex surface of this second hollow edged electrode assembly rises and falls.
8. cold-cathode fluorescence lamp according to claim 1, wherein this first hollow edged electrode assembly and this second hollow edged electrode assembly are one-body molded.
9. cold-cathode fluorescence lamp according to claim 1, wherein this cold-cathode fluorescence lamp also comprises a discharge gas, is sealed among this fluorescent tube.
10. cold-cathode fluorescence lamp according to claim 1, wherein the material of this first hollow edged electrode assembly and this second hollow edged electrode assembly comprises molybdenum, nickel or niobium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065098XA CN100350546C (en) | 2005-04-14 | 2005-04-14 | Cold-cathode fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065098XA CN100350546C (en) | 2005-04-14 | 2005-04-14 | Cold-cathode fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1670903A CN1670903A (en) | 2005-09-21 |
| CN100350546C true CN100350546C (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510065098XA Expired - Fee Related CN100350546C (en) | 2005-04-14 | 2005-04-14 | Cold-cathode fluorescent lamp |
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| CN (1) | CN100350546C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459020C (en) * | 2006-04-05 | 2009-02-04 | 东南大学 | Gas discharging lamp cathode with multi-discharging units |
| CN100432795C (en) * | 2006-06-20 | 2008-11-12 | 友达光电股份有限公司 | Cold cathode fluorescent lamp system |
| US20100231813A1 (en) * | 2007-09-21 | 2010-09-16 | Sharp Kabushiki Kaisha | Cold cathode tube lamp, lighting device for display device, display device, and television receiving device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002100319A (en) * | 2000-09-21 | 2002-04-05 | Sanken Electric Co Ltd | Fluorescence discharge tube |
| JP2002110085A (en) * | 2000-09-28 | 2002-04-12 | Sanken Electric Co Ltd | Fluorescent discharge tube |
| JP2002298779A (en) * | 2001-03-30 | 2002-10-11 | Matsushita Electric Ind Co Ltd | Cold cathode fluorescent lamp |
| CN1378232A (en) * | 2001-03-28 | 2002-11-06 | 松下电器产业株式会社 | Cold cathode fluorescent lamp |
| JP2003132843A (en) * | 2001-10-23 | 2003-05-09 | Fuji Kogyo Kk | Cold cathode lead wire and method for manufacturing the same |
| CN1795532A (en) * | 2003-07-17 | 2006-06-28 | 三垦电气株式会社 | Discharge tube |
-
2005
- 2005-04-14 CN CNB200510065098XA patent/CN100350546C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002100319A (en) * | 2000-09-21 | 2002-04-05 | Sanken Electric Co Ltd | Fluorescence discharge tube |
| JP2002110085A (en) * | 2000-09-28 | 2002-04-12 | Sanken Electric Co Ltd | Fluorescent discharge tube |
| CN1378232A (en) * | 2001-03-28 | 2002-11-06 | 松下电器产业株式会社 | Cold cathode fluorescent lamp |
| JP2002298779A (en) * | 2001-03-30 | 2002-10-11 | Matsushita Electric Ind Co Ltd | Cold cathode fluorescent lamp |
| JP2003132843A (en) * | 2001-10-23 | 2003-05-09 | Fuji Kogyo Kk | Cold cathode lead wire and method for manufacturing the same |
| CN1795532A (en) * | 2003-07-17 | 2006-06-28 | 三垦电气株式会社 | Discharge tube |
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| Publication number | Publication date |
|---|---|
| CN1670903A (en) | 2005-09-21 |
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