CN101562115B - Fluorescent tube - Google Patents
Fluorescent tube Download PDFInfo
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- CN101562115B CN101562115B CN2008100914958A CN200810091495A CN101562115B CN 101562115 B CN101562115 B CN 101562115B CN 2008100914958 A CN2008100914958 A CN 2008100914958A CN 200810091495 A CN200810091495 A CN 200810091495A CN 101562115 B CN101562115 B CN 101562115B
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- fluorescent tube
- electrode
- face
- axis direction
- long axis
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Abstract
The invention relates to a fluorescent tube comprising a tube body and at least one electrode assembly, wherein the tube body is provided with a long axis direction, and the electrode assembly is arranged on at least one end of the tube body and is provided with an inner electrode and an outer electrode. The inner electrode is provided with a first end face along the long axis direction, the outerelectrode is at least partially arranged on the outer surface of the end of the tube body and is provided with a second end face along the long axis direction, and the projection position of the seco nd end face, along the long axis direction, is at least partially positioned between the first end face and the end.
Description
Technical field
The present invention is about a kind of fluorescent tube.
Background technology
Along with the technology of fluorescent tube is constantly progressive, it also is applied to various field gradually, for example is applied to the backlight module of lighting device or liquid crystal indicator.In this, be that example explains promptly with the fluorescent tube that is applied to backlight module.
Please refer to shown in Figure 1, a kind of known fluorescent tube 1 comprise a body 11 and two in electrodes 12.Electrode 12 is arranged at the two ends of body 11 respectively in these, and links to each other with a lead W respectively.Therefore, when fluorescent tube 1 is applied to backlight module, be connected with a connector (connector), be connected with a transformer again by lead W, promptly can high drive fluorescent tube 1 luminous.
Yet the lead W of fluorescent tube 1 and being connected of connector must be via manually welding.Therefore, when a plurality of fluorescent tubes 1 are arranged at backlight module, promptly must weld each fluorescent tube 1 respectively, so also make the production efficiency of backlight module to promote, and increased artificial cost.And if produce defective, can cause fluorescent tube 1 to light in the welding procedure, also make the reliability of backlight module descend.
In addition, please refer to shown in Figure 2, another kind of known fluorescent tube 2 is except that having interior electrode 22, and the outer surface in the end of body 21 has more external electrode 23, and wherein external electrode 23 is along the one second end face S2 of the long axis direction L1 of the body 21 first end face S1 above interior electrode 22.When fluorescent tube 2 is applied to backlight module, can external electrode 23 can be produced with transformer electrically connect, and not need to weld by the clamp assemblies clamping external electrode 23 of conductive material with connector.Can simplify the assembling flow path of fluorescent tube 2 in the backlight module by this, to enhance productivity.
Yet, please refer to shown in Figure 3, it is the fluorescent tube 1 of Fig. 1 and starting resistor (starting voltage) comparison diagram of the fluorescent tube 2 of Fig. 2, wherein starting resistor is represented the some modulating voltage that fluorescent tube is required, the starting resistor of fluorescent tube 1 is measured in curve C 1 expression, the starting resistor of fluorescent tube 2 two side lead W is measured in curve C 2 expressions, and the starting resistor of fluorescent tube 2 external electrodes 23 is measured in curve C 3 expressions.By among Fig. 3 as can be known, compared to known fluorescent tube 1, can produce the drift problem of unstable through the starting resistor of the fluorescent tube 2 of processing installing external electrode 23.Therefore, backlight module also can be because of the drift of the starting resistor of fluorescent tube 2, and produces that part fluorescent tube 2 can't be lighted or problem such as flicker, makes its reliability descend.
Therefore, how to provide a kind of fluorescent tube, become one of important topic with stable starting resistor.
Summary of the invention
Because above-mentioned problem, the present invention's purpose is for providing a kind of fluorescent tube with stable starting resistor.
For reaching above-mentioned purpose, comprise a body and at least one electrode assemblie according to a kind of fluorescent tube of the present invention.Body has a long axis direction, and electrode assemblie is arranged at least one end of body, and has an electrode and an external electrode in one.Interior electrode has one first end face along long axis direction, external electrode at least a portion be arranged at body the end outer surface and have one second end face along long axis direction, second end face in the projected position of long axis direction to small part between first end face and end.
From the above, fluorescent tube according to the present invention, electrode has one first end face along long axis direction within its electrode assemblie, and external electrode has one second end face along the long axis direction of body, second end face in the projected position of long axis direction between first end face and body end.By this, can avoid producing electric field, and electrode produces the usefulness of electricity slurry in the influence, thereby make fluorescent tube have stable starting resistor because of external electrode length surpasses between the part of interior electrode end surface and interior electrode tips.Therefore, if the present invention's fluorescent tube is applied in the backlight module, can avoid the part fluorescent tube can't light or problem such as flicker, to improve the reliability of backlight module.
Description of drawings
Hereinafter with reference to correlative type, a kind of fluorescent tube according to preferred embodiment of the present invention is described, wherein same components is represented with same numeral.
Fig. 1 is a kind of schematic diagram of known fluorescent tube;
Fig. 2 is the schematic diagram of the known fluorescent tube of another kind;
Fig. 3 is the starting resistor comparison diagram of the fluorescent tube of the fluorescent tube of Fig. 1 and Fig. 2;
Fig. 4 A is the schematic diagram of a kind of fluorescent tube of preferred embodiment of the present invention, and Fig. 4 B is the profile of fluorescent tube along A-A straight line among Fig. 4 A;
Fig. 5 A to Fig. 5 D is the different aspect schematic diagrames that change of the present invention's fluorescent tube;
Fig. 6 is applied to the schematic diagram of backlight module for the present invention's fluorescent tube;
Fig. 7 is the starting resistor comparison diagram of the fluorescent tube of the fluorescent tube of Fig. 1 and Fig. 4 A and Fig. 4 B;
Fig. 8 A changes the aspect schematic diagram for the backlight module one of application the present invention's fluorescent tube; And
Fig. 8 B changes the aspect generalized section for the present invention's fluorescent tube one.
The primary clustering symbol description
1,2,3,3a～3d, 4: fluorescent tube
11,21,31,41: body
12,22,321,421: interior electrode
23,322,322a～322d, 422: external electrode
311,312,411,412: the end
32,32C, 42: electrode assemblie
A-A: straight line
B, B ': backlight module
C, C ': clamping part
C1, C2, C3: curve
L1: long axis direction
N: part
P: adhesion layer
S1: first end face
S2: second end face
T: backboard
W: lead
θ: angle
Embodiment
Please be simultaneously with reference to shown in Fig. 4 A and Fig. 4 B, wherein Fig. 4 B is the profile of fluorescent tube 3 along A-A straight line among Fig. 4 A.A kind of fluorescent tube 3 of the present invention comprises a body 31 and at least one electrode assemblie 32.Wherein, fluorescent tube 3 can be applicable to the backlight module of lighting device, advertisement billboard, liquid crystal indicator or the light source of other electronic installation.
The material of external electrode 322 is a conductive material, and its resistance coefficient is (Ao Mu-Mi), and conductive material for example is metal, alloy or conducting polymer less than 1.External electrode 322 for example is sheet, cup-shaped or helical form, and at least a portion is with the outer surface that attaches, sandblast, printing, scolding tin, evaporation, sputter or adhesive means are arranged at these ends 311,312 of body 31, and contact with lead W, to electrically connect with interior electrode 321.In this, external electrode 322 forms a conductive layer with conductive material and is arranged at that the surface is that example explains outside the body 31 with the shape of cup-shape electrode and in the mode of body 31 ends, 311,312 tin sticky earlier.External electrode 322 has one second end face S2 along long axis direction L1, and between the first end face S1 and end 311,312, in the present embodiment, be parallel to the first end face S1 with the second end face S2 is example to the second end face S2 in the projected position of long axis direction L1 to small part.That is to say, when external electrode 322 is extended toward body 31 inside by the end 311,312 of body 31, surpass the first end face S1.
Note, electrode 321 and external electrode 322 had the plane of vertical long axis direction L1 in fact to body 31 inner ends of extending in the first end face S1 and the second end face S2 were respectively, and it is a virtual plane (being represented by dotted lines among Fig. 4 B) that the first end face S1 and the second end face S2 may be extended to respectively.
Please refer to shown in Fig. 5 A, electrode 322a can also only some contacts with the outer surface of these ends 311,312 of body 31 outside the fluorescent tube 3a, make external electrode 322a form a cup (rim of a cup is greater than the cup body), at this moment, external electrode 322a can for example be the flexual conducting strip of tool.Please refer to again shown in Fig. 5 B, in order to ensure the zygosity of external electrode 322b and body 31, electrode 322b also can utilize an adhesion layer P to be arranged at surface outside the body 31 with adhesive means outside the fluorescent tube 3b.
Please refer to shown in Fig. 5 C, by cross section view, electrode 322c is not to be the contour cup-shaped of a rim of a cup outside the fluorescent tube 3c.Electrode assemblie 32C with the left side, so the second end face S2 and the first end face S1 of external electrode 322c can have an angle theta, and the second end face S2 is in the projected position of long axis direction L1, and end 311 immediate part N are between the first end face S1 and end 311.In addition, please refer to shown in Fig. 5 D, electrode 322d also can utilize processing procedures such as printing or etching outside the fluorescent tube 3d, make that external electrode 322d is that helical form is (except helical form, external electrode 322d can also be netted, a plurality of linearities and other geometry), the engraved structure that promptly has a correspondence.In addition, engraved structure also can form by the mode that electrode outside sheet or the cup-shaped is partly burrowed.
Therefore please refer to shown in Figure 6ly, when fluorescent tube 3 is applied to a backlight module B, can utilize a clamping part C who is arranged at backboard T to come clamping external electrode 322, the clamping part C that utilizes conductivity is so that electrode assemblie 32 and the electric connection of transformer (not shown).Can simplify the assembling flow path of fluorescent tube 3 among the backlight module B by this, to enhance productivity.
Please refer to the starting resistor comparison diagram of the fluorescent tube 1 that Figure 7 shows that known Fig. 1 and the fluorescent tube 3 of Fig. 4 B, wherein curve C 1 is represented the starting resistor of the fluorescent tube 1 of survey map 1, the starting resistor of the fluorescent tube 3 two side lead W of curve C 2 expression survey map 4B, the starting resistor of fluorescent tube 3 external electrodes 322 of curve C 3 expression survey map 4B.By among Fig. 7 as can be known, fluorescent tube 1 compared to Fig. 1, fluorescent tube 3 surpasses the first end face S1 of interior electrode 321 along the second end face S2 of the long axis direction L1 of body 31 because of electrode 322 outside in the electrode assemblie 32, therefore part and 321 at the interior electrode that can avoid surpassing interior electrode 321 first end face S1 because of external electrode 322 length produce electric field, and electrode 321 produces the usefulness that electricity is starched in the influence, thereby make that no matter the fluorescent tube 3 of having installed external electrode 322 is measured by lead W or external electrode 322, all has identical and stable starting resistor with the fluorescent tube 1 of Fig. 1.
In addition, please be simultaneously with reference to Fig. 8 A and Fig. 8 B, wherein Fig. 8 A is that backlight module B ' changes the aspect schematic diagram, Fig. 8 B is the generalized section of fluorescent tube 4.Though external electrode 422 along the projected position of the one second end face S2 of the long axis direction L1 of body 41 between the first end face S1 and end 411,412 of interior electrode 421, but convenient for the clamping of clamping part C ' (two clamping limbs are arranged), the area of external electrode 422 is unsuitable too small.Therefore can utilize the length of electrode 421 in the lengthening or add the inside conductor part of long lead W, so that the area of corresponding external electrode 422 is increased, be that example explains in this length with electrode in extending 421.By this, can make the projected length of the second end face S2 be no more than the end face of interior electrode 421, but have enough clamping part C ' grasping parts, to guarantee electrically conducting of fluorescent tube 4 and clamping part C '.
In sum, electrode has one first end face along long axis direction within making in the electrode assemblie according to the present invention's fluorescent lamp piping, external electrode has one second end face along the long axis direction of body, second end face in the projected position of long axis direction between first end face and body end.By this, can avoid producing electric field, and electrode produces the usefulness of electricity slurry in the influence, thereby make fluorescent tube have stable starting resistor because of external electrode length surpasses between the part of interior electrode end surface and interior electrode tips.Therefore, if the present invention's fluorescent tube is applied in the backlight module, can avoid the part fluorescent tube can't light or problem such as flicker, to improve the reliability of backlight module.
The above only is an illustrative, but not is restricted person.Any spirit and category that does not break away from the present invention, and to its equivalent modifications of carrying out or change, all should be contained in the attached claim in back.
Claims (10)
1. fluorescent tube comprises:
One body has a long axis direction; And
At least one electrode assemblie, be arranged at least one end of this body, and have an electrode and an external electrode in one, should have one first end face along this long axis direction to the extension of the inside of this body by interior electrode, this external electrode at least a portion be arranged at this body this end outer surface and extend to the inside of this body along this long axis direction and to have one second end face, this second end face in the projected position of this long axis direction to small part between this first end face and this end.
2. fluorescent tube as claimed in claim 1, wherein this electrode assemblie more comprises a lead, and this lead one end electrically connects with being somebody's turn to do interior electrode, and this external electrode also electrically connects with this lead.
3. fluorescent tube as claimed in claim 1, wherein should in the material of electrode be selected from nickel, molybdenum, niobium, diamond, class and bore carbon and group that combination constituted thereof.
4. fluorescent tube as claimed in claim 1, wherein should in electrode be cylindric, tubular, sheet or cup-shaped.
5. fluorescent tube as claimed in claim 1, wherein the material of this external electrode is a conductive material, its resistance coefficient is (ohm-Mi) greater than 1.
6. fluorescent tube as claimed in claim 1, wherein this external electrode is to attach, scolding tin, evaporation, sputter, to insert and put or adhesive means is arranged at this outer surface of this body.
7. fluorescent tube as claimed in claim 1, wherein very sheet, cup-shaped or helical form of this dispatch from foreign news agency.
8. fluorescent tube as claimed in claim 1, wherein this external electrode has an engraved structure.
9. fluorescent tube as claimed in claim 1, wherein this second end face system is parallel to this first end face or has an angle with this first end face.
10. fluorescent tube as claimed in claim 1, wherein this second end face is in the projected position of this long axis direction, and the immediate part in this end is between this first end face and this end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100914958A CN101562115B (en) | 2008-04-17 | 2008-04-17 | Fluorescent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100914958A CN101562115B (en) | 2008-04-17 | 2008-04-17 | Fluorescent tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101562115A CN101562115A (en) | 2009-10-21 |
| CN101562115B true CN101562115B (en) | 2011-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100914958A Expired - Fee Related CN101562115B (en) | 2008-04-17 | 2008-04-17 | Fluorescent tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101562115B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1575505A (en) * | 2001-12-19 | 2005-02-02 | 三星电子株式会社 | Cold cathode fluorescent lamp |
| CN1574186A (en) * | 2003-06-11 | 2005-02-02 | 三星电子株式会社 | Electric lamp and method of manufacturing the same, and image display device employing the same |
| CN1589592A (en) * | 2001-12-29 | 2005-03-02 | 三星电子株式会社 | Lamp and method of manufacturing the same |
-
2008
- 2008-04-17 CN CN2008100914958A patent/CN101562115B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1575505A (en) * | 2001-12-19 | 2005-02-02 | 三星电子株式会社 | Cold cathode fluorescent lamp |
| CN1589592A (en) * | 2001-12-29 | 2005-03-02 | 三星电子株式会社 | Lamp and method of manufacturing the same |
| CN1574186A (en) * | 2003-06-11 | 2005-02-02 | 三星电子株式会社 | Electric lamp and method of manufacturing the same, and image display device employing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101562115A (en) | 2009-10-21 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20120417 |