CN101685757B - Fluorescent lamp and back light module - Google Patents
Fluorescent lamp and back light module Download PDFInfo
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- CN101685757B CN101685757B CN2008102227936A CN200810222793A CN101685757B CN 101685757 B CN101685757 B CN 101685757B CN 2008102227936 A CN2008102227936 A CN 2008102227936A CN 200810222793 A CN200810222793 A CN 200810222793A CN 101685757 B CN101685757 B CN 101685757B
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Abstract
The invention relates to a fluorescent lamp and a back light module. The fluorescent lamp comprises an outer lamp tube with fluorescent powder coated on the inner wall, wherein a first electrode and a second electrode are inserted in the first end of the outer lamp tube for connecting in series with a power supply circuit; a public electrode is arranged inside the second end of the outer lamp tube; the first end of the public electrode and the first electrode are arranged in a first area in the outer lamp tube, and the second end of the public electrode and the second electrode are arranged in a second area in the outer lamp tube; and an insulating layer is arranged between the first area and the second area for isolating the first area and the second area. The back light module adopts the fluorescent lamp as a back light lamp. Electromagnetic interference generated by the fluorescent lamp and the back light module has minimal influence, cannot cause vibration of the fluorescent lamp, and can greatly save space compared with structures of multiple lamp tubes and curved lamp tubes.
Description
Technical field
The present invention relates to a kind of fluorescent lamp and module backlight, relate in particular to a kind of fluorescent lamp of fluorescent material stimulated luminescence, and adopt the backlight module of this fluorescent lamp as backlight.
Background technology
Cold-cathode fluorescence lamp (Cold Cathode Fluorescent Lamp is called for short CCFL) is a kind of gaseous discharge lamp, is a kind of common fluorescent lamp, and fluorescent tube issues angry body discharge at electric field action, the release of radiation energy, and excitated fluorescent powder produces luminescent effect.
As shown in Figure 1, be the structural representation of traditional CCFL, this CCFL is made up of fluorescent tube 11 and first electrode 202, second electrode 203 that are in fluorescent tube 11 two ends, and it contains an amount of inert gas and mercury, scribbles fluorescent material 14 on fluorescent tube 11 inwalls.CCFL is connected among the loop 16 of power supply 15.When work, electric current from another electrode output, turns back to another utmost point of power supply 15 by the electrode input of CCFL by loop 16.Be added in first electrode 202 and second electrode 203 of fluorescent tube 11 when high pressure after, the minority electrons high-speed impact produces secondary in the fluorescent tube 11, begin discharge, after mercury atom is subjected to electron excitation, discharge ultraviolet ray, after the ultraviolet ray excited fluorescent material 14 that is applied on the inwall that produces, fluorescent material 14 just can produce visible light.
The fluorescent lamp of other types is similar to the principle of luminosity of CCFL, all is that excitated fluorescent powder is luminous.
But existing fluorescent lamp exists certain defective: because power supply is an alternation, then the electric current of alternation has produced alternating magnetic fields in the loop, thereby has produced electromagnetic interference; Electromagnetic interference to the electric current in the fluorescent lamp produces makes there is electromagnetic induction power between fluorescent tube and the loop that the cyclic variation meeting of this electromagnetic induction power causes the vibration of fluorescent lamp.
Summary of the invention
Main purpose of the present invention provides a kind of fluorescent lamp and module backlight, to reduce the electromagnetic interference effect of alternating current to fluorescent lamp.
For achieving the above object, the invention provides a kind of fluorescent lamp, comprising: be coated with the outer fluorescent tube of fluorescent material on the inwall, first end of fluorescent tube is inserted with first electrode and second electrode outside, is used for the series electrical source circuit; The second end inside of fluorescent tube is provided with public electrode outside; First end of this public electrode and first electrode are arranged in the interior first area of outer fluorescent tube, and second end of this public electrode and second electrode are arranged in the interior second area of outer fluorescent tube; Be provided with insulating barrier between first area and the second area, be used to isolate first area and second area.
Wherein, the first area is centered around outside the second area, and the insulating barrier between first area and the second area is a clear glass, is around in outside the second area to form interior fluorescent tube.
Preferably, interior fluorescent tube and the coaxial setting of outer fluorescent tube.
Perhaps, the first area is centered around outside the second area, the electrode axis that second end of public electrode and second electrode are formed in one, and insulating barrier is attached on the electrode axis surface.
For achieving the above object, the present invention also provides a kind of module backlight that adopts fluorescent lamp of the present invention, also comprises: light guide plate, backlight, backlight reflecting plate and optical film, wherein, fluorescent lamp is arranged on the both sides of light guide plate as backlight, and the backlight reflecting plate is around in outside the fluorescent lamp.
Fluorescent lamp provided by the invention, current circuit is first end that enters public electrode from first electrode, second end through public electrode enters second electrode, first electrode and second electrode array are associated in the loop of power supply, because the area of fluorescent lamp return circuit is very little, and be closed in outer fluorescent tube inside, so the electromagnetic radiation that the electric current variation causes is minimum, so for outer fluorescent tube outside, can not produce electromagnetic interference effect.When the outer fluorescent tube of fluorescent lamp and interior fluorescent tube were taked the structure of coaxial setting, interaction force therebetween was zero, so fluorescent lamp further can be avoided vibration; In addition, compared with the structure of many fluorescent tubes and crooked fluorescent tube, the fluorescent lamp of nested structure can also be saved the space widely.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of traditional CCFL;
Fig. 2 is the structural representation of fluorescent lamp embodiment one of the present invention;
Fig. 3 is the structural representation of fluorescent lamp embodiment two of the present invention;
Fig. 4 is the structural representation of fluorescent lamp embodiment three of the present invention;
Fig. 5 is the structural representation of fluorescent lamp embodiment five of the present invention;
Fig. 6 is the structural representation of fluorescent lamp embodiment six of the present invention;
Fig. 7 is the structural representation of fluorescent lamp embodiment seven of the present invention;
Fig. 8 is the structural representation of the present invention module embodiment backlight.
Embodiment
Fluorescent lamp embodiment one
Fig. 2 is the structural representation of fluorescent lamp embodiment one of the present invention.As shown in Figure 2, the fluorescent lamp in the present embodiment comprises the interior fluorescent tube 209 that is coated with fluorescent material 212 on the outer fluorescent tube 201 that is coated with fluorescent material 208 on the inwall and the inwall, and interior fluorescent tube 209 is nested within the outer fluorescent tube 201; First end of outer fluorescent tube 201 is inserted with first electrode 202 and second electrode 203, is used for the series electrical source circuit; The inside of second end of fluorescent tube 201 is provided with public electrode 204 outside; First end 210 of public electrode 204 and first electrode 202 are arranged between outer fluorescent tube 201 and the interior fluorescent tube 209, and second end 211 of public electrode 204 and second electrode 203 are arranged in the interior fluorescent tube 209.Above-mentioned nested dual-layer lamp tube structure is: the zone between outer fluorescent tube 201 and the interior fluorescent tube 209 forms first area 205, and the zone in the interior fluorescent tube 209 forms second area 206; Be provided with insulating barrier 207 between first area 205 and the second area 206, be used to isolate first area 205 and second area 206.First area 205 is centered around outside the second area 206, and the insulating barrier 207 between first area 205 and the second area 206 is a clear glass, is around in outside the second area 206 with fluorescent tube 209 in forming.
When adding driving voltage, current opposite in direction in interior fluorescent tube 209 and the outer fluorescent tube 201, because the pipe thickness of fluorescent tube 209 and the product of length in the area of return circuit only equals, therefore its electromagnetic radiation is minimum, and be closed in outer fluorescent tube 201 inside, so for outer fluorescent tube 201 outsides, can not produce electromagnetic interference effect.In the present embodiment, preferably with interior fluorescent tube 209 and outer fluorescent tube 201 coaxial settings, because interior fluorescent tube 209 and outer fluorescent tube 201 are coaxial, so interaction force therebetween is zero, so this fluorescent lamp can not vibrate; In addition, compared with the structure of many fluorescent tubes and crooked fluorescent tube, the fluorescent lamp of nested structure can also be saved the space widely.
Fluorescent lamp embodiment two
Fig. 3 is the structural representation of fluorescent lamp embodiment two of the present invention.As shown in Figure 3, the fluorescent lamp in the present embodiment comprises the outer fluorescent tube 201 that is coated with fluorescent material 208 on the inwall, and first end of outer fluorescent tube 201 is inserted with first electrode 202 and second electrode 203, is used for the series electrical source circuit; The inside of second end of fluorescent tube 201 is provided with public electrode 204 outside.Isolate formation first area 205 and second area 206 with insulating barrier 207 in the fluorescent tube 201 outside.Concrete, second area 206 is set up in parallel with first area 205.First end 210 of public electrode 204 and first electrode 202 are arranged in the first area 205 in the outer fluorescent tube 201, and second end 211 of public electrode 204 and second electrode 203 are arranged in the interior second area 206 of outer fluorescent tube 201; Be provided with insulating barrier 207 between first area 205 and the second area 206, isolate first area 205 and second area 206, this insulating barrier 207 is specifically as follows clear glass, promptly is equivalent to form two fluorescent tubes arranged side by side in the fluorescent tube 201 outside.When adding driving voltage, utilize the collision of field effect excited inert gas atom and mercury atom to discharge ultraviolet ray, after the ultraviolet ray excited fluorescent material 208 that is applied on outer fluorescent tube 201 inwalls, produce visible light.
When adding driving voltage, current opposite in direction in first area 205 and the second area 206, because the area of return circuit only equals the thickness of insulating barrier 207 and the product of length, so so its electromagnetic radiation minimum for outer fluorescent tube 201 outsides, the generation electromagnetic interference effect is minimum.
Fluorescent lamp embodiment three
Fig. 4 is the structural representation of fluorescent lamp embodiment three of the present invention.As shown in Figure 4, the fluorescent lamp of present embodiment and the foregoing description one is roughly the same, its difference is, all be filled with inert gas and mercury in interior fluorescent tube 209 among the embodiment one and the outer fluorescent tube 201, and be coated with fluorescent material on the inwall separately and stimulated luminescence, and in the present embodiment, all be filled with inert gas and mercury in interior fluorescent tube 209 and the outer fluorescent tube 201, but only scribble fluorescent material 208 on the inwall of fluorescent tube 201 outside.
Among the fluorescent lamp embodiment of the present invention, the ultraviolet ray meetings that produce in the interior fluorescent tube 209 shine directly into fluorescent material 208 on outer fluorescent tube 201 inwalls by transparent insulating barrier 207, make the brightness increase of outer fluorescent tube 201; Simultaneously, because outside the electronics in the interior fluorescent tube 209 can not enter under the stopping of insulating barrier 207 among the fluorescent tube 201, thereby can not bombard on the fluorescent material 208 of outer fluorescent tube 201, so can prolong the life-span of the fluorescent material 208 on the outer fluorescent tube 201, thus the cost of fluorescent lamp reduced.
Perhaps, also can apply fluorescent material on the outer wall of interior fluorescent tube, make its stimulated luminescence, the light-emitting phosphor on the interior tube outer wall can increase brightness, but the exciting of electronics in the fluorescent tube in can avoiding equally, thereby can life-saving.
Fluorescent lamp embodiment four
Fluorescent lamp embodiment of the present invention has identical structure with the foregoing description one, difference is, the amount of type of material, atmospheric pressure value, mercuryvapour density and fluorescent material all can be provided with respectively in outer fluorescent tube 201 and the interior fluorescent tube 209, to obtain better brightness and colour gamut width.In the present embodiment, atmospheric pressure value in outer fluorescent tube 201 and the interior fluorescent tube 209 is respectively 500 handkerchiefs (Pa) and 450 handkerchiefs (Pa), the fluorescent material that is coated on the outer fluorescent tube 201 is many magnesium aluminates fluorescent material or many magnesium aluminates barium fluorescent material, fluorescent material in being coated on the fluorescent tube 209 is yttrium oxide phosphor, mercuryvapour atmospheric pressure value in outer fluorescent tube 201 and the interior fluorescent tube 209 is 0.8 handkerchief (Pa), and inert gas is the mist of 82% argon and 18% krypton.
Fluorescent lamp embodiment five
Fig. 5 is the structural representation of fluorescent lamp embodiment five of the present invention.As shown in Figure 5, the fluorescent lamp in the present embodiment comprises the outer fluorescent tube 201 that is coated with fluorescent material 208 on the inwall, and first end of outer fluorescent tube 201 is inserted with first electrode 202 and second electrode 203, is used for the series electrical source circuit; The inside of second end of fluorescent tube 201 is provided with public electrode 204 outside; First end 210 of public electrode 204 and first electrode 202 are arranged in the first area 205 in the outer fluorescent tube 201, and second end 211 of public electrode 204 and second electrode 203 are arranged in the interior second area 206 of outer fluorescent tube 201; Be provided with insulating barrier 207 between first area 205 and the second area 206, be used to isolate first area 205 and second area 206.First area 205 is centered around outside the second area 206, and second area 206 is nested within the first area 205, the electrode axis 309 that second end 211 of public electrode 204 and second electrode 203 are formed in one, and insulating barrier 207 is attached on the surface of electrode axis 309.
When adding driving voltage, because the electromagnetic radiation that the electric current alternation causes is closed in outer fluorescent tube 201 inside, so for outer fluorescent tube 201 outsides, the electromagnetic radiation of generation is minimum; And because outer fluorescent tube 201 is coaxial with electrode axis 309, so interaction force therebetween is zero, so fluorescent lamp can not vibrate.
Fluorescent lamp embodiment six
Fig. 6 is the structural representation of fluorescent lamp embodiment six of the present invention.As shown in Figure 6, the fluorescent lamp of present embodiment is based on the foregoing description five, and further, electrode axis 309 and insulating barrier 207 are made for transparent material.
Among the fluorescent lamp embodiment of the present invention, because electrode axis 309 and insulating barrier 207 are made for transparent material, beyond the ultraviolet ray of fluorescent tube 201 inside can not stopped, can see through on transparent electrode axis 309 and the insulating barrier 207 full illuminations fluorescent material 208 to outer fluorescent tube 201 inwalls, and then the brightness that has improved fluorescent lamp.
Fluorescent lamp embodiment seven
Fig. 7 is the structural representation of fluorescent lamp embodiment seven of the present invention.As shown in Figure 7, the fluorescent lamp of present embodiment is based on the foregoing description five, and further, insulating barrier 207 is coated with fluorescent material 212 on the surface of first area 205.
Among the fluorescent lamp embodiment of the present invention, on the surface of first area 205, apply fluorescent material 212, can make more fluorescent material be subjected to ultraviolet ray excited and the generation visible light, the brightness that has improved fluorescent lamp at insulating barrier 207.In addition, be applied to respectively on outer fluorescent tube 201 inwalls and the insulating barrier 207, can obtain better brightness and colour gamut width by fluorescent material with different materials.In the present embodiment, the fluorescent material that is coated on the outer fluorescent tube 201 is many magnesium aluminates fluorescent material or many magnesium aluminates barium fluorescent material, and the fluorescent material that is coated on the insulating barrier 207 is yttrium oxide phosphor.
Fluorescent lamp design philosophy of the present invention is applicable to polytype fluorescent lamp, and for example, this fluorescent lamp can be cold-cathode fluorescence lamp or hot-cathode fluorescent lamp etc.
Module embodiment backlight
Fig. 8 is the structural representation of the present invention module embodiment backlight, and as shown in Figure 8, the backlight in this module backlight can adopt the technical scheme of the arbitrary embodiment of fluorescent lamp of the present invention.Except that adopting this fluorescent lamp as the backlight 5, this module backlight also comprises: light guide plate 1, backlight 2, backlight reflecting plate 3 and optical film 4.Above-mentioned backlight 5 is arranged on the both sides of light guide plate 1, and backlight reflecting plate 3 is around in outside the backlight 5.Above-mentioned optical film 4 generally can comprise: go up prismatic lens, go up diffusion sheet, following prismatic lens and following diffusion sheet, also can design the optical film that comprises different retes as the case may be.
Backlight in the present invention's module backlight adopts the fluorescent lamp of the arbitrary embodiment of the present invention, and electromagnetic radiation is little, and performance is better.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (7)
1. a fluorescent lamp comprises the outer fluorescent tube that is coated with fluorescent material on the inwall, it is characterized in that: first end of fluorescent tube is inserted with first electrode and second electrode outside described, is used for the series electrical source circuit; The second end inside of fluorescent tube is provided with public electrode outside described; First end of described public electrode and described first electrode are arranged in the interior first area of described outer fluorescent tube, second end of described public electrode and described second electrode are arranged in the second area in the described outer fluorescent tube, and the electrode axis that is formed in one of second end of described public electrode and described second electrode; Be provided with insulating barrier between described first area and the described second area, be used to isolate described first area and described second area, and described first area is centered around outside the described second area, described insulating barrier is attached on the surface of described electrode axis.
2. fluorescent lamp according to claim 1 is characterized in that: described electrode axis and described insulating barrier are that transparent material is made.
3. fluorescent lamp according to claim 1 is characterized in that: described insulating barrier is coated with fluorescent material on the surface of described first area.
4. fluorescent lamp according to claim 3 is characterized in that: the material of the fluorescent material that applies on the fluorescent material that applies on the described insulating barrier and the described outer tube inner wall is different.
5. fluorescent lamp according to claim 4 is characterized in that: the fluorescent material that is coated on the described outer fluorescent tube is many magnesium aluminates fluorescent material or many magnesium aluminates barium fluorescent material, and the fluorescent material that is coated on the insulating barrier is yttrium oxide phosphor.
6. according to the described fluorescent lamp of arbitrary claim in the claim 1～5, it is characterized in that: described fluorescent lamp is cold-cathode fluorescence lamp or hot-cathode fluorescent lamp.
7. module backlight that adopts the described arbitrary fluorescent lamp of claim 1～6, it is characterized in that, also comprise light guide plate, backlight, backlight reflecting plate and optical film, described fluorescent lamp is arranged on the both sides of described light guide plate as backlight, and described backlight reflecting plate is around in outside the described fluorescent lamp.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102227936A CN101685757B (en) | 2008-09-25 | 2008-09-25 | Fluorescent lamp and back light module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102227936A CN101685757B (en) | 2008-09-25 | 2008-09-25 | Fluorescent lamp and back light module |
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| Publication Number | Publication Date |
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| CN101685757A CN101685757A (en) | 2010-03-31 |
| CN101685757B true CN101685757B (en) | 2011-12-28 |
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| CN2008102227936A Expired - Fee Related CN101685757B (en) | 2008-09-25 | 2008-09-25 | Fluorescent lamp and back light module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609436A (en) * | 1969-04-21 | 1971-09-28 | Gen Electric | Fluorescent light source with a plurality of sequentially energized electrodes |
| US4598229A (en) * | 1984-07-23 | 1986-07-01 | Lightmasters, Ltd. | Luminous tube color generator |
| CN1809238A (en) * | 2005-01-18 | 2006-07-26 | 哈利盛东芝照明株式会社 | Luminaire |
-
2008
- 2008-09-25 CN CN2008102227936A patent/CN101685757B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609436A (en) * | 1969-04-21 | 1971-09-28 | Gen Electric | Fluorescent light source with a plurality of sequentially energized electrodes |
| US4598229A (en) * | 1984-07-23 | 1986-07-01 | Lightmasters, Ltd. | Luminous tube color generator |
| CN1809238A (en) * | 2005-01-18 | 2006-07-26 | 哈利盛东芝照明株式会社 | Luminaire |
Non-Patent Citations (2)
| Title |
|---|
| JP昭59-217939A 1984.12.08 |
| JP特开2005-327568A 2005.11.24 |
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| CN101685757A (en) | 2010-03-31 |
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Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20141204 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20141204 |
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Free format text: CORRECT: ADDRESS; FROM: 100176 DAXING, BEIJING TO: 100015 CHAOYANG, BEIJING |
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Effective date of registration: 20141204 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE TECHNOLOGY GROUP Co.,Ltd. Patentee after: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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