CN101635248A - External electrode fluorescent lamps and device of using the same - Google Patents
External electrode fluorescent lamps and device of using the same Download PDFInfo
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- CN101635248A CN101635248A CN200910159794A CN200910159794A CN101635248A CN 101635248 A CN101635248 A CN 101635248A CN 200910159794 A CN200910159794 A CN 200910159794A CN 200910159794 A CN200910159794 A CN 200910159794A CN 101635248 A CN101635248 A CN 101635248A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/044—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by a separate microwave unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/09—Hollow cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/2806—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without electrodes in the vessel, e.g. surface discharge lamps, electrodeless discharge lamps
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The invention provides an external electrode fluorescent lamps and device of using the same, the external electrode fluorescent lamps use zinc oxide that containing better primary electron emission property than alumina particles, and therby stable dark starting characteristics can be implemented, forming of amalgam is prevented, which can holding long time light emission and prevent reduction of emission strength, furthermore, the invention provided lamp is highly reliable and ealisy manufactured. The external electrode fluorescent lamps comprise transparent tubes for keeping inert gas and mercury therein, fluorescent material layer arranged on inner surface of the transparent tube and external electrodes arranged on peripheral surfaces of each end in of the transparent tubes, wherein the external electrode fluorescent lamps comprising a start acceleration layer containing zinc oxide on inner surface of the transparent tube and at least one region corresponding to the external electrode, and edge of the tube central side of the start acceleration layer is located in a position 10 mm from edge of the tube central side of the external electrode to the tube central side, or a tube end side relative to the aboved position.
Description
Invention field
The device that the present invention relates to a kind of external-electrode fluorescent lamp and use this external-electrode fluorescent lamp, more specifically, relate to a kind of black dull startup (in-dark startup) excellent, can suppress the formation of amalgam, and realize high-intensity external-electrode fluorescent lamp and device.
Background technology
Because it has excellent characteristic such as high strength, high-color rendering, long-life, low power consumption etc., cold-cathode fluorescence lamp be widely used as being applied in the liquid crystal indicator of TV and computer etc. backlight, be used for facsimile machine etc. read the demagnetizer light source of light source, photocopier, various display applications etc.In such cold-cathode fluorescence lamp, to being arranged near the electrode application voltage each end of light-transmission tube that the inner sealing of being made by glass etc. maintains inert gas and mercury, make inert gas by photoelectron ionization, described photoelectron is present in the light-transmission tube with considerably less amount as initiating electron, and force inert gas ion after the ionization and electrode collide with the emission secondary electron, thereby cause glow discharge, take this to make mercury atom to excite with the radiation ultraviolet light.Then, meet with under the situation of ultraviolet light, be arranged on fluorescent material on the inwall of light-transmission tube visible emitting.In this cold-cathode fluorescence lamp,, therefore use electrode wherein to be positioned in external-electrode fluorescent lamp on the outer surface of light-transmission tube to reduce the infringement that sputter causes electrode because electrode suffers the sputter of inert gas ion etc.
In the time of in being placed on the space (dark space) that completely cuts off with exterior light for a long time, cold-cathode fluorescence lamp will become more difficult maybe can not start (lighting), therefore the failure of the startup in the dark space be set about improving.Particularly, a kind of discharge lamp that has utilized the primary electron emission characteristic of aluminium oxide of report is arranged, and the aluminium oxide particulate is disperseed and is blended in the fluorescent material layer or aluminium oxide particulate layer is formed on the inner surface of glass lamp to be exposed to discharge space (referring to the open 2004-95378 of Japan Patent); And the such a kind of discharge lamp of report arranged, wherein the oxide skin(coating) of being made by the mixture of zinc oxide and yittrium oxide is set between the interior perimeter surface and fluorescent material layer of light-emitting tube, or is arranged on (referring to the open 2007-73481 of Japan Patent) on each end of light-emitting tube.
Yet in the external-electrode fluorescent lamp according to the open 2004-95378 of Japan Patent, the aluminium oxide particulate is mixed to the remarkable decline that causes luminous intensity in the fluorescent material layer.That is, the electron emission matter of aluminium oxide very a little less than, and when attempting to obtain to stablize black dull starting characteristic, need to improve the combined amount of aluminium oxide.The fluorescent material of the aluminium oxide fluorescence that to be not emission caused by the ultraviolet light of mercury atom emission, and the increase that is included in the amount of the aluminium oxide in the fluorescent material layer will cause the reduction of lamp brightness.In addition, the level that does not influence the alumina content of brightness decline does not realize stablizing black dull characteristic (in-darkcharacteristic) character.In addition, may cause making brightness to keep the adverse effect that the factor reduces, be adsorbed to the aluminium oxide particulate of sneaking in the fluorescent material layer, form amalgam thus such as the mercury in glass lamp.And, although so a kind of method that discloses is arranged, wherein the aluminium oxide particulate is not sneaked in the fluorescent material layer, and aluminium oxide particulate layer only is arranged on the external electrode inner surface partly of glass lamp, described external electrode part is not provided with fluorescent material layer, but because a little less than the primary electron emission characteristic sky of aluminium oxide particulate was born with very, therefore only in this part aluminium oxide particulate layer being set may not realize stable black dull startup effect.
In addition, in external-electrode fluorescent lamp, absorbed and reflection by the oxide skin(coating) that constitutes by zinc oxide and yittrium oxide, cause the reduction of lamp brightness thus from the fluorescent material emitted fluorescence according to the open 2007-73481 of Japan Patent.And, since the conductibility of the oxide skin(coating) that constitutes by zinc oxide and yittrium oxide very a little less than, therefore when between electrode, applying voltage, because the variation of condition in the oxide skin(coating) preparation process, make and to be arranged on the external electrode that the oxide skin(coating) on the perimeter surface in lamp whole plays a part to connect two ends, and this leakage current will make discharge characteristics also unstable, and may not realize required black dull characteristic.Owing to this reason, have the lamp of stablizing black dull characteristic in order to prepare, in the preparation process of the oxide skin(coating) of zinc oxide and yittrium oxide, need the strict preparation condition of handling.
The device that an object of the present invention is to provide a kind of external-electrode fluorescent lamp and use this external-electrode fluorescent lamp, described external-electrode fluorescent lamp has utilized the primary electron emission characteristic to be better than the zinc oxide of aluminium oxide particulate, and can realize stable black dull starting characteristic thus, suppress the formation of amalgam, keep long light emission, and preventing the reduction of luminous intensity, in addition, is highly reliable and easy the manufacturing.
Summary of the invention
The inventor studies by persistence, the final discovery by the zone on the inner surface that the startup acceleration layer that wherein contains zinc oxide is positioned in light-transmission tube is set in respect to the specific region of external electrode, can suppress photoemissive absorption and reflection, suppress the absorption of mercury and the decline that prevents the luminous intensity of lamp from fluorescent material.Based on this discovery, the inventor has finished the present invention.
Promptly, the present invention relates to a kind of external-electrode fluorescent lamp, this external-electrode fluorescent lamp comprises the light-transmission tube that keeps inert gas and mercury in it, be arranged on the fluorescent material layer on the inner wall surface of light-transmission tube and be arranged on external electrode in the outer surface of each end of light-transmission tube, wherein said external-electrode fluorescent lamp comprises the startup acceleration layer that contains zinc oxide in the zone relative with at least one external electrode on the light-transmission tube inner surface, and the edge of the tube hub side of described startup acceleration layer is positioned at edge from the tube hub side of external electrode on the position of tube hub side 10mm, or with respect to above-mentioned position in the tube end side.
And, the present invention relates to be equipped with the device of above-mentioned external-electrode fluorescent lamp.
External-electrode fluorescent lamp of the present invention utilizes the primary electron emission characteristic to be better than the zinc oxide of aluminium oxide particulate, can realize stable black dull starting characteristic thus, in addition, can suppress the formation of amalgam, keep long light emission, prevent the decline of luminous intensity, and be highly reliable and easy production.
Description of drawings
Fig. 1 is the part schematic configuration figure that shows an example of external-electrode fluorescent lamp of the present invention;
Fig. 2 is the schematic cross section that shows an example of external-electrode fluorescent lamp of the present invention;
Fig. 3 is the schematic cross section that shows an example of external-electrode fluorescent lamp of the present invention;
Fig. 4 is the schematic cross section that shows an example of external-electrode fluorescent lamp of the present invention;
Fig. 5 is the schematic cross section that shows an example of external-electrode fluorescent lamp of the present invention; With
Fig. 6 is the schematic cross section that shows an example of external-electrode fluorescent lamp of the present invention.
Embodiment
External-electrode fluorescent lamp of the present invention is a kind of external-electrode fluorescent lamp that comprises following structure: the light-transmission tube that keeps inert gas and mercury in it, be arranged on the fluorescent material layer on the inner wall surface of light-transmission tube and be arranged on external electrode on the outer surface of each end of light-transmission tube, wherein said external-electrode fluorescent lamp comprises the startup acceleration layer that contains zinc oxide in the zone relative with at least one external electrode on the light-transmission tube inner surface, and the edge of the tube hub side of described startup acceleration layer is positioned at edge from the tube hub side of external electrode on the position of tube hub side 10mm, or with respect to above-mentioned position in the tube end side.
The light-transmission tube that is used for external-electrode fluorescent lamp of the present invention can be any for have high radioparent material from the fluorescent material emitted fluorescence, make by glass etc., such as, those that make by silicate glass, borosilicate glass, zinc borosilicate glass, lead glass, soda-lime glass etc.Particularly, suitable material comprises: wherein alkaline constituents is not more than soda-lime glass and the borosilicate glass of 10 quality % such as the content of sodium, potassium etc.Its shape can be any straight tubulose, arcuation etc.The pipe diameter can be 2 to 5mm a external diameter for example.Although the thickness of light-transmission tube can suitably be selected according to application target, for above-mentioned pipe diameter, thickness is preferably 0.2 to 0.7mm.The two ends of light-transmission tube seal, and the length of pipe can be 500mm to 1500mm for example.
Fluorescent material layer is set on the almost whole inner wall surface of light-transmission tube.Fluorescent material layer comprises the ultraviolet excitation that is subjected to the mercury atom radiation and the fluorescent material of visible emitting.Can select this fluorescent material so that it is according to application target emission required color light; For example, can use halophosphate fluorescent material and rare-earth luminescent material etc.Also their appropriate combination can be used with the emission white light.Particularly, may the making up of fluorescent material that is used to launch white light comprises red fluorescence material Y
2O
3: Eu, green fluorescent material LaPO
4: Ce, Tb and blue fluorescent material BaMgAl
10O
17: the combination of Eu.The thickness of fluorescent material layer preferably is not less than 15 μ m and is not more than 25 μ m.Although until the zone relative with external electrode can be provided with fluorescent material layer, described opposed area is preferably in the 10mm on the direction of principal axis of light-transmission tube.
Be introduced in the light-transmission tube by the mercury of discharge generation ultraviolet light and the inert gas that suitably is selected from argon, xenon and neon etc.Discharge electronics that produces in light-transmission tube and mercury atom collision, and mercury atom generation ultraviolet light comprise that the wavelength that fluorescent material is excited is the ultraviolet light of 253.7nm.The amount that is introduced in the mercury in the light-transmission tube is preferably such amount: the vapour pressure of mercury was for example 1 to 10Pa amount when lamp was lighted.The amount that is introduced in the inert gas in the light-transmission tube is preferably such amount: when lamp was lighted, the pressure of inert gas was the amount of 2000Pa to 6000Pa for example.
Be separately positioned on light-transmission tube outer surface place, two ends external electrode by iron or ferroalloy for example SUS etc. form.Can form external electrode by iron or ferroalloy thin plate are reeled around light-transmission tube, and can use scolder to improve the adhesion of electrode and light-transmission tube.
On the inner surface of described light-transmission tube, the startup acceleration layer that contains zinc oxide is set in the zone relative with at least one external electrode in the above.Start acceleration layer and can be set to relative a pair of of external electrode with the place, two ends, or with a single form that external electrode is relative.Zinc oxide has good electron emissivity, and emitting electrons consistently, therefore can make external-electrode fluorescent lamp have excellent black dull starting characteristic, even thereby after being positioned over the dark state that does not apply voltage for a long time, when to electrode application voltage, also start discharge at short notice.Be included in the zinc oxide that starts in the acceleration layer and preferably have the primary particle that average grain diameter is not more than 100nm, because the surface area of zinc oxide particle increases, thus the emission of accelerated electron.
Now, mean particle diameter can be used as the value that obtains from the observation of scanning electron microscopy (SEM) or transmission electron microscope (TEM) and provides.
Although above-mentioned startup acceleration layer can only be formed by zinc oxide, it can also comprise one or more materials with electron emissivity, for example yittrium oxide, aluminium oxide, titanium oxide, magnesium oxide and tin oxide.These materials can improve the starting characteristic of external-electrode fluorescent lamp.With respect to zinc oxide, the content of these materials is preferably in the scope of 10 quality % to 100 quality %.In addition, start fluorescent material in the scope that acceleration layer can also be included in the function of not damaging zinc oxide and above-mentioned material with electron emissivity.Particularly, the fluorescent material that can exemplify is the fluorescent material that uses in above-mentioned fluorescent material layer.
Above-mentioned startup acceleration layer is set in the zone relative with at least one external electrode on the light-transmission tube inner surface.Although it can be provided with the non-annularity form relative with external electrode on the light-transmission tube inner surface, it can preferably be arranged on the light-transmission tube inner surface with the annular form relative with external electrode.Show as the perspective view of Fig. 1, start acceleration layer 6 and preferably be formed on the inner surface of the light-transmission tube 2 relative with external electrode 3 with annular form.The edge that starts the tube hub side of acceleration layer is positioned at edge from the tube hub side of external electrode on the position of tube hub side 10mm, or with respect to aforementioned location in the tube end side.Be positioned at edge from the tube hub side of external electrode on the position of tube hub side 10mm or as the edge of the tube hub side that starts acceleration layer with respect to the result of aforementioned location in the tube end side, becoming to prevent any obstruction to the ultraviolet excitation fluorescent material, prevents the lamp lowering of luminance thus.Can be positioned at the edge of tube end side although start the edge of the tube end side of acceleration layer to the tube end side of external electrode, but be preferably placed at edge from the tube hub side of external electrode on the position of tube end side 10mm, or with respect to aforementioned location in the tube hub side be adsorbed to and start acceleration layer and form amalgam because it can suppress mercury.The startup acceleration layer preferably has the width within the 20mm on the direction of principal axis of light-transmission tube, and irrelevant with the shape and the size of light-transmission tube.Be set in the above-mentioned zone if start acceleration layer, can comprise that lamination has the part of fluorescent material layer.The thickness that starts acceleration layer can suitably be chosen according to the average grain diameter of the zinc oxide particle that will use and the material of light-transmission tube etc.
Such startup acceleration layer can form as follows: the preparation coating liquid, that is and, the zinc oxide that will have a primary particle of above-mentioned average grain diameter is dispersed in the solvent such as water and isopropyl alcohol etc.; And use described liquid, by dipping or coating etc., in the desired zone of the inner surface of light-transmission tube, form coated film; Suitably dry afterwards and heating coating film.
External-electrode fluorescent lamp of the present invention can be provided with protective layer etc. as required between fluorescent material layer and light-transmission tube, leak into the outside of light-transmission tube to suppress ultraviolet light that mercury atom gives off etc., or suppress because the deterioration of the light-transmission tube due to the mercury etc.
The method for preparing above-mentioned external-electrode fluorescent lamp is included on the inwall of light-transmission tube and forms fluorescent material layer.The formation fluorescent material layer comprises: the preparation fluid dispersion promptly, is scattered in above-mentioned fluorescent material in the solvent; And dip coated and afterwards dispersion is dried to preset thickness on the inner wall surface of the light-transmission tube of being made by glass etc. of reservation shape, thereby form the fluorescent material layer of above-mentioned thickness.Afterwards, by impregnating, on the inner surface of light-transmission tube, form above-mentioned startup acceleration layer.Afterwards, the mercury and the inert gas of scheduled volume is incorporated in the light-transmission tube, and sealed at both ends with light-transmission tube.The thin plate of ferroalloy etc. is wrapped on the outer surface of each end of light-transmission tube, and between light-transmission tube and the plate that twined, adds scolder to fill, make thus their closely contact to form external electrode.
The example of external-electrode fluorescent lamp of the present invention is presented among Fig. 2 to 6.Construct external-electrode fluorescent lamp 1 shown in Figure 2, make that the two ends of the light-transmission tube 2 made by soda-lime glass, borosilicate glass etc. are sealed; Inert gas and mercury are retained in its inside; And interior pressure is lowered to 1/10th atmospheric pressure of approximate number.On the inner wall surface of the almost whole length of light-transmission tube 2, all be provided with fluorescent material layer 5.External electrode 3 is set on axial each end of light-transmission tube 2.Starting acceleration layer 6 is set in the interior perimeter surface of the light-transmission tube relative with external electrode.Start the far-end that acceleration layer 6 is set at fluorescent material layer, and the edge 6a that starts the tube hub side of acceleration layer 6 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3a ' of tube hub side 10mm, or with respect to aforementioned location in the tube end side.The edge 6b that starts the tube end side of acceleration layer 6 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3b ' of tube end side 10mm, or with respect to aforementioned location in the tube hub side.
Be set at startup acceleration layer 61 in the external-electrode fluorescent lamp 11 as shown in Figure 3 and be on the inner wall surface that is placed in fluorescent material layer and light-transmission tube, and the edge 61a that starts the tube hub side of acceleration layer 61 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3a ' of tube hub side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube end side, and the edge 61b that starts the tube end side of acceleration layer 61 is positioned at edge 3a from the tube hub side of external electrode 3 to the position 3b ' of tube end side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube hub side.In Fig. 3, the label symbol representation class among similar Fig. 2 seemingly is arranged on the parts in the external-electrode fluorescent lamp shown in Figure 21.
Be set at startup acceleration layer 62 in the external-electrode fluorescent lamp shown in Figure 4 12 and be on the inner wall surface that is placed in light-transmission tube, and the edge 62a that starts the tube hub side of acceleration layer 62 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3a ' of tube hub side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube end side, and the edge 62b that starts the tube end side of acceleration layer 62 is positioned at edge 3a from the tube hub side of external electrode 3 to the position 3b ' of tube end side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube hub side.In Fig. 4, the label symbol representation class among similar Fig. 2 seemingly is arranged on the parts in the external-electrode fluorescent lamp shown in Figure 21.
Be set at startup acceleration layer 63 in the external-electrode fluorescent lamp shown in Figure 5 13 and be on the inner wall surface that is placed in light-transmission tube, and fluorescent material layer is laminated on the part that starts acceleration layer.The edge 63a that starts the tube hub side of acceleration layer 63 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3a ' of tube hub side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube end side, and the edge 63b that starts the tube end side of acceleration layer 63 is positioned at edge 3a from the tube hub side of external electrode 3 to the position 3b ' of tube end side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube hub side.In Fig. 5, the label symbol representation class among similar Fig. 2 seemingly is arranged on the parts in the external-electrode fluorescent lamp shown in Figure 21.
Be set at startup acceleration layer 64 in the external-electrode fluorescent lamp shown in Figure 6 14 and be on the inner wall surface that is placed in light-transmission tube, and fluorescent material layer is comprised in the above-mentioned layer.The edge 64a that starts the tube hub side of acceleration layer 64 is positioned at edge 3a from the tube hub side of external electrode 3 on the position 3a ' of tube hub side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube end side, and the edge 64b that starts the tube end side of acceleration layer 64 is positioned at edge 3a from the tube hub side of external electrode 3 to the position 3b ' of tube end side 10mm (shown in Figure 2), or with respect to aforementioned location in the tube hub side.In Fig. 6, the label symbol representation class among similar Fig. 2 seemingly is arranged on the parts in the external-electrode fluorescent lamp shown in Figure 21.
Device of the present invention is equipped with above-mentioned external-electrode fluorescent lamp, and its instantiation is the LCD of using in TV, computer, mobile phone etc.; Facsimile machine, photocopier etc.
Embodiment
Below, will further describe the present invention by embodiment.
Fluorescent material is dispersed in the concentration that forms 60 quality % in the butyl acetate together with borosilicate glass adhesive and celluloid, prepares the fluorescent material coating liquid thus.With external diameter is that 4.0mm, thickness are that 0.5mm, length are that the inner wall surface that 1000mm and alkaline constituents concentration are not more than the soda-lime glass of 10 quality % is impregnated in the coating liquid of gained, and with dry air therein by carrying out drying, thereby prepare the fluorescent material layer that thickness is about 20 μ m.
The average grain diameter of its primary particle zinc oxide for about 30nm is dispersed in the isopropyl alcohol (IPA), is the coating liquid of 5 quality % to prepare zinc oxide concentration.
Use the coating liquid of gained, in preparing on the interior perimeter surface that fluorescent material layer is arranged of an end of soda-lime glass pipe, preparation as shown in Figure 3 wide 15mm and the startup acceleration layer of thick about 1 μ m.
Calcined with after burning celluloid at the soda-lime glass pipe, the mercury and the argon gas of scheduled volume is incorporated in the soda-lime glass pipe, and sealed at both ends with this soda-lime glass pipe.The film of SUS is wrapped on the outer surface of each end of soda-lime glass pipe, and uses scolder to fix, thereby form external electrode.
The gained external-electrode fluorescent lamp is carried out the measurement of black dull starting characteristic as follows.Prepare 30 external-electrode fluorescent lamps, they were left standstill under dark condition 72 hours, apply the tube current of 7.0mA afterwards, find that 30 external-electrode fluorescent lamps are lighted all within 100 milliseconds.
Start the acceleration layer except not providing, prepare external-electrode fluorescent lamp in the mode identical with described embodiment, and in the same manner external-electrode fluorescent lamp is carried out the measurement of black dull starting characteristic, find that having 12 in the prepared external-electrode fluorescent lamp lights in 100 milliseconds.Therefore, obvious external-electrode fluorescent lamp of the present invention has good black dull characteristic.
The application based on and require the benefit of priority of the Japanese patent application 2008-191276 that submitted on July 24th, 2008, the disclosure of this Japanese patent application 2008-191276 all is combined in this by reference.
Symbol description
1,11,12,13,14 external-electrode fluorescent lamps
2 light-transmission tubes
3 external electrodes
The edge of the tube hub side of 3a external electrode
3a ' is from the edge of the tube hub side of external electrode to the position of tube hub side 10mm
3b ' is from the edge of the tube hub side of external electrode to the position of tube end side 10mm
5 fluorescent material layers
6,61,62,63,64 start acceleration layer
6a, 61a, 62a, 63a, 64a starts the edge of the tube hub side of acceleration layer
6b, 61b, 62b, 63b, 64b starts the edge of the tube end side of acceleration layer
Claims (6)
1. external-electrode fluorescent lamp, fluorescent material layer on the inner wall surface that described external-electrode fluorescent lamp comprises the light-transmission tube that keeps inert gas and mercury in it, be arranged on described light-transmission tube and be arranged on external electrode on the outer surface of each end of described light-transmission tube, wherein
Described external-electrode fluorescent lamp comprises the startup acceleration layer that contains zinc oxide in the zone relative with at least one external electrode on the inner surface of described light-transmission tube, and the edge of the tube hub side of described startup acceleration layer is positioned at edge from the tube hub side of described external electrode on the position of tube hub side 10mm, or with respect to above-mentioned position in the tube end side.
2. external-electrode fluorescent lamp according to claim 1, the edge of the tube end side of wherein said startup acceleration layer are positioned at edge from the tube hub side of described external electrode on the position of tube end side 10mm, or with respect to above-mentioned position in the tube hub side.
3. external-electrode fluorescent lamp according to claim 1, wherein said startup acceleration layer comprises any one or more in yittrium oxide, aluminium oxide, titanium oxide, magnesium oxide and the tin oxide.
4. external-electrode fluorescent lamp according to claim 1, wherein said startup acceleration layer has the part that lamination has described fluorescent material layer, or is made by material that constitutes described fluorescent material layer and the mixtures of material that constitutes described startup acceleration layer.
5. external-electrode fluorescent lamp according to claim 1, wherein said zinc oxide has the primary particle that average grain diameter is not more than 100nm.
6. device, described device is equipped with according to each described external-electrode fluorescent lamp in the claim 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008191276 | 2008-07-24 | ||
| JP2008191276A JP2010027576A (en) | 2008-07-24 | 2008-07-24 | Outer surface electrode fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101635248A true CN101635248A (en) | 2010-01-27 |
Family
ID=41594388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910159794A Pending CN101635248A (en) | 2008-07-24 | 2009-07-22 | External electrode fluorescent lamps and device of using the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2010027576A (en) |
| KR (1) | KR20100011935A (en) |
| CN (1) | CN101635248A (en) |
| TW (1) | TWI389164B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007073481A (en) * | 2005-09-09 | 2007-03-22 | Nec Lighting Ltd | Discharge lamp |
| US20070164676A1 (en) * | 2006-01-18 | 2007-07-19 | Hyun Jin Kim | External electrode lamp, method of manufacturing the same and liquid crystal display apparatus using the same |
| CN101189704A (en) * | 2005-05-31 | 2008-05-28 | 松下电器产业株式会社 | Fluorescent lamp, backlight unit, and liquid crystal television |
-
2008
- 2008-07-24 JP JP2008191276A patent/JP2010027576A/en active Pending
-
2009
- 2009-06-30 TW TW098122051A patent/TWI389164B/en not_active IP Right Cessation
- 2009-07-22 CN CN200910159794A patent/CN101635248A/en active Pending
- 2009-07-23 KR KR1020090067416A patent/KR20100011935A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189704A (en) * | 2005-05-31 | 2008-05-28 | 松下电器产业株式会社 | Fluorescent lamp, backlight unit, and liquid crystal television |
| JP2007073481A (en) * | 2005-09-09 | 2007-03-22 | Nec Lighting Ltd | Discharge lamp |
| US20070164676A1 (en) * | 2006-01-18 | 2007-07-19 | Hyun Jin Kim | External electrode lamp, method of manufacturing the same and liquid crystal display apparatus using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010027576A (en) | 2010-02-04 |
| KR20100011935A (en) | 2010-02-03 |
| TWI389164B (en) | 2013-03-11 |
| TW201009885A (en) | 2010-03-01 |
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Application publication date: 20100127 |