CN1240103C - Fluorescent lamp and lighting device - Google Patents

Fluorescent lamp and lighting device Download PDF

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Publication number
CN1240103C
CN1240103C CNB021407630A CN02140763A CN1240103C CN 1240103 C CN1240103 C CN 1240103C CN B021407630 A CNB021407630 A CN B021407630A CN 02140763 A CN02140763 A CN 02140763A CN 1240103 C CN1240103 C CN 1240103C
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China
Prior art keywords
light transmission
discharge vessel
shiner
plasma membrane
fluorescent lamp
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Expired - Fee Related
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CNB021407630A
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CN1399307A (en
Inventor
泉昌裕
畠山圭司
中岛康雄
森川和人
直木庄司
依藤孝
宇贺神理弘
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Toshiba Lighting and Technology Corp
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Toshiba Lighting and Technology Corp
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    • 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
    • H01J61/44—Devices characterised by the luminescent material
    • 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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors

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  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

A fluorescent lamp and an illumination device are provided to reduce the quantity of three wavelength emitting phosphor and achieve improved optical output characteristics. A fluorescent lamp comprises a translucent discharge container(1) constituted by a glass bulb(1a); a non-luminous material film(2) having a thickness of 3-25[mu]m, and which is formed all over the inner surface of the translucent discharge container, and made of, as a main component, a mixture of a non-luminous material particle having a high reflectance of a mean particle size of 1.0[mu]m or larger containing strontium pyrophosphate(Sr2P2O7) having a bar-shaped heteromorphic particle shape and a three wavelength emitting phosphor particle; a fluorescent layer(3) having a thickness of 30[mu]m or smaller, and which is formed all over the inner surface of the non-luminous material film, and constituted by the three wavelength emitting phosphor particle; a pair of electrodes(4,4) arranged in the discharge container in such a manner that the electrodes generate discharge; and a discharge medium filling the translucent discharge container.

Description

Fluorescent lamp and lighting device
Technical field
The present invention relates to possess improvement luminescent coating fluorescent lamp and use the lighting device of fluorescent lamp.
Background technology
The terres rares fluorophor is significantly higher than the calcium halophosphate activated by antimony andmanganese fluorophor because of its price, so carrying out being intended to reduce the trial of its use amount always.Open the discharge vessel inner face that discloses in the flat 9-167595 communique at fluorescent lamp as the spy and form diaphragm, on this diaphragm, form the technology of the luminescent coating that constitutes by the terres rares fluorophor with ultraviolet reflection.(prior art 1)
According to prior art 1 record; the diaphragm that forms because of alpha-aluminium oxide with the gamma-alumina that mixes 5～80 weight % and 20～95 weight %; so the ultraviolet reflection rate of diaphragm uprises; ultraviolet reflection to luminescent coating effectively carries out, and its result can reduce the use amount of expensive terres rares fluorophor.
On the other hand, existing circline is, at first the inner face at the glass envelope of straight tube-like forms luminescent coating, then after pair of electrodes is sealed up at the glass envelope two ends, carry out bending machining and be shaped as annular, further inclosure mercury and argon gas are made after the glass envelope exhaust gas inside.This circline generally is, forms before the luminescent coating on the glass envelope before bending machining, is pre-formed diaphragm at the glass envelope inner face, forms luminescent coating above the diaphragm at this.This diaphragm forms for the deterioration of the fluorophor that suppresses to cause by the alkali composition (being mainly sodium) in ultraviolet irradiation glass envelope migration and the phenomenon separated out to the glass envelope surface.Like this, separate out between the alkaline components and fluorophor or mercury on glass envelope surface, by this diaphragm partition to prevent their reaction.So these diaphragms are, the slurries such as mixture of the gamma-alumina of ultramicron shape or zinc oxide and titanium oxide are coated the glass envelope inner face, calcination and forming.(prior art 2)
Then, existing quick startup shape fluorescent lamp is because of produce so-called EC melanism in the life-span, so in order to suppress this phenomenon, limiting the resistance value of light transmitting conductive film.Also have, open records such as clear 50-12885 communique, the same 52-49683 communique and the same 52-93184 communique as the spy, the melanism that takes place in order to suppress so-called macula lutea phenomenon etc. to follow the configuration of light transmitting conductive film is (hereinafter referred to as " EC melanism ".) generation, diaphragm to be made of insulating properties metal oxides such as gamma-aluminas is situated between between light transmitting conductive film and luminescent coating.(prior art 3)
In the prior art 3,, insulation impedance therebetween is used as the purpose of diaphragm by the diaphragm raising in order to prevent to be considered to the light transmitting conductive film of EC melanism reason and the insulation breakdown between the discharge space.
Also have; specially permit in No. 3189558 communique and put down in writing; is that the mixed proportion of 30～70 weight %s contain with zinc oxide and titanium oxide with the latter as metal oxide, has the quick startup shape fluorescent lamp of the ultraviolet radiation absorption diaphragm that metal oxide microparticle by average film thickness 0.2～1.5 μ m constitutes.(prior art 4)
Further, start the fluorescent lamp of shape fast,, the particulate of magnesium oxide MgO in the fluorophor particle surface coverage in order to reduce starting resistor.(prior art 5)
Like this, the diaphragm in the prior art 3 and 4 is, as the metal oxide both use average grain diameter be 10～20nm degree be the ultramicron shape.
Summary of the invention
The fluorescent lamp of prior art 1 is that the alpha-aluminium oxide particulate that contains 20～95 weight % in the diaphragm constitutes, so make loaded down with trivial detailsly, is difficult to improve the ultraviolet reflection rate.That is, the alpha-aluminium oxide particulate has when modulation is used to be coated with the slurries that form diaphragm, the character that is difficult in solvent, disperse, and in diaphragm formation state, if the alpha-aluminium oxide particulate can not appropriateness disperse, the ultraviolet reflection rate will descend.Also have, for the appropriateness dispersion in the slurries solvent of alpha-aluminium oxide particulate, be necessary to add the dispersant equal solvent, thereby make loaded down with trivial details the time, manufacturing cost also rises.
Secondly, the circline of prior art 2 is, the bending of existing diaphragm during according to bending machining, and mainly the part that stretches at glass is easy to generate and peels off or crackle (crack).So there is the problem of appearance poor.This phenomenon is to take place too when forming diaphragm as prior art by the alpha-aluminium oxide particulate.Also have, diaphragm peels off or is easy to generate crackle (crack), and its part exposes the glass envelope inner face to fluorophor or discharge space side, produces this phenomenon of not expecting of paintedization so alkaline components and fluorophor or mercury reaction take place easily.Also have, come off generally is the pin hole shape more.
In addition, prior art 3 and 4 quick startup shape fluorescent lamp are if the resistance value of restriction light transmitting conductive film is to be difficult to produce the EC melanism, then there is the starting resistor of fluorescent lamp to rise, the tendency that its startability descends if guarantee the startability of minimum, then is easy to generate the problem of EC melanism.Also have, have the tendency that is easy to generate according to the different EC melanism of the burning species of using as diaphragm.That is be easy to generate the EC melanism when, using gamma-alumina.The problem that also has full light beam decline according to the kind of the metal oxide that uses as diaphragm.That is, when using zinc oxide and titanium oxide as the metal oxide of light transmitting conductive film, full light beam drops to 96% degree.
Moreover prior art 5 exists, if want starting resistor is dropped to desired value and increases magnesian addition, and the problem that then has full light beam to descend.
The objective of the invention is to, provide by possessing the non-shiner plasma membrane of specific formation, though reduced the use amount of the luminous shape fluorophor of three-wavelength, the lighting device that has the fluorescent lamp of required full light beam and use it.
Also have, other purposes of the present invention are, the fluorescent lamp of further reduction UV-A radiation and the lighting device that uses it are provided.
Also have, other purposes of the present invention are, are difficult to produce peeling off or the fluorescent lamp of crackle (crack) and the lighting device that uses it of diaphragm after being provided at further configuration protection film and luminescent coating when carrying out the glass envelope bending machining.
Also have, other purposes of the present invention are, provide further to be difficult to take place the EC melanism, and full light beam reduce few fluorescent lamp that is suitable as quick startup shape and the lighting device that uses it.
Also have, other purposes of the present invention are, the fluorescent lamp of the quick startup shape of being suitable as of further reduction starting resistor and the lighting device that uses it are provided.
The fluorescent lamp of the invention of the 1st aspect of the present invention is characterised in that: possess: the light transmission discharge vessel that is made of glass envelope; Mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is that the above non-luminescent substance particle of high reflectance of 1.0 μ m forms, and is disposed at the non-shiner plasma membrane of thickness 3～25 μ m of almost whole light transmission discharge vessel inner face side; With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With the discharge medium of enclosing light transmission discharge vessel inside.
The present invention provides, by disposing the non-shiner plasma membrane of specific formation, even luminescent coating attenuation and reduce the use amount of the luminous shape fluorophor of three-wavelength also has the fluorescent lamp of required full light beam.
In the present invention and following each invention, under special instruction situation not, the definition of term and the technical meaning are as follows.
Be the light transmission discharge vessel: the light transmission discharge vessel is, by using as closure member such as end plate are sealed the two ends of glass envelope, perhaps do not use it but forms with direct sealing such as clamping strip of paper used for sealings.During the use side disc seal, header portion generally is to constitute by stem stem.Can adopt known stem stem structure such as tubaeform stem stem, pearl stem stem, button core post when using stem stem.
Glass envelope allows for the shape of straight tube, swan-neck or warpage pipe.Also have, glass envelope can be that a plurality of straight tubes, curved benefit pipe or warpage pipe are connected into the structure that forms a discharge path by tube connector.
Moreover the caliber of glass envelope reaches the tubular axis along the light transmission discharge vessel, and in other words the length along the discharge road does not limit.But in general, the caliber of light transmission discharge vessel is below the 40mm, and containing along the length of tubular axis is below the 2400mm.When the less general lighting of tube wall load was used fluorescent lamp, its caliber was 25～38mm, was 300～2400mm along the length of tubular axis.Also have, when high frequency waves were lit a lamp special-purpose shape fluorescent lamp, its caliber was 15～25.5mm, was 500～2400mm along the length of tubular axis.And during small-sized easy shape fluorescent lamp, its caliber is below the 25mm, as 12～22mm, is below the 2400mm, as 200～2300mm along the length of tubular axis.Also have, during lamp bulb-shaped fluorescent lamp, its caliber is below the 13mm, as 8～12mm, is below the 500mm, as 400～500mm along the length of tubular axis.
Secondly, the material of the glass envelope of light transmission discharge vessel is as long as have air-tightness, processability and fire resistance, then not do special restriction, but generally be preferred for the soft glass of this fluorescent lamp.Soft glass has lead glass, soda lime glass and barium silicate glass etc., can use wherein any one.From environmental preferred bases soda lime glass or barium silicate glass.But consider from the processability equal angles, can and use soda lime glass and lead glass.As can partly forming the maximum glass envelope of glass use amount with soda lime glass, the stem stem part forms with lead glass.
Further, if necessary, can the glass beyond the soft glasses such as hard glass, semi-rigid glass, quartz glass be used as glass envelope.Also have, the low so-called crown glasss of alkaline components containing ratio such as use sodium suppress the deterioration that alkaline components is separated out the fluorophor that causes.
Then, the shape to the light transmission discharge vessel describes.The light transmission discharge vessel can be any one of straight tube shape and annular.Further if necessary, can to allow be U-shaped, semicircle, U-shaped 2～4 the various shapes such as shape that suitably dispose of partly connecting.μm
About non-shiner plasma membrane:Non-shiner plasma membrane is to contain mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is that the above non-luminescent substance particle of high reflectance of 1.0 μ m forms, thickness is 3～25 μ m.And be disposed at almost whole light transmission discharge vessel inner face side.Also have, " mainly by strontium pyrophosphate (Sr 2P 2O 7) constitute " be meant that the average grain diameter of non-shiner plasma membrane is that the above non-luminescent substance particle of high reflectance of 1 μ m is to be main constituent material with strontium pyrophosphate.And then, can only form non-shiner plasma membrane by strontium pyrophosphate, also can contain the non-luminescent substance of other high reflectances as accessory ingredient.The non-luminescent substance of other high reflectances is selective oxidation aluminium (Al suitably 2O 3) and calcium pyrophosphate (Ca 2P 2O 7) etc., or can appropriate combination use.The shape of particle of strontium pyrophosphate can be to be bar-shaped abnormity, also can be to take on a different shape.Also have, " shape of particle is bar-shaped abnormity " is that the overwhelming majority of strontium pyrophosphate particle is bar-shaped, and the part of its rod is near linearity, or the centre is flexed into shapes such as ヘ shape (clench nail shape), V-arrangement, branch shape, compares the meaning that is tangible abnormity with spheroid.Also have, strontium pyrophosphate is preferably used at the crystalline solid of having grown of high temperature sintering more than 1000 ℃.Because when being this shape of particle, be more highly purified crystalline solid,, help the raising of full light beam so the ultraviolet reflection rate uprises.
Also have, " inner face side " of light transmission discharge vessel be meant, can directly form at the inner face of light transmission discharge vessel, also can across as formation indirectly such as light transmitting conductive film.And " almost whole " is, the meaning that the major part at the main position of covering light transmission discharge vessel gets final product.And then, can not dispose non-shiner plasma membrane as both ends of light transmission discharge vessel etc.
Then, the non-luminescent substance of high reflectance that constitutes non-shiner plasma membrane is that its average grain diameter is more than the 1 μ m.Also have, below the preferred 10 μ m, 2.0～6.0 μ m most preferably.If average grain diameter is less than 1 μ m, but not adsorbed gas shiner plasma membrane in excessive because of the specific area of particle increases, and so the exhaust problem in the light transmission discharge vessel is inadvisable.Because among the present invention, the thickness of non-shiner plasma membrane is 3～25 μ m, and be disposed at almost whole light transmission discharge vessel inner face side, so the difficulty of exhaust becomes especially great problem.
Also have, non-shiner plasma membrane is in order to see through visible light well in the derivation of outside uv reflectance well, and its thickness is necessary for 3～25 μ m.In this thickness scope, can play the effect that when keeping within the required range, reduces the use amount of the luminous shape fluorophor of three-wavelength to full light beam.For this, if thickness less than 3 μ m, not only the ultraviolet reflection effect reduces, the fluorophor that can't obtain expecting is cut down effect, and because of fluorescent lamp inside will be through visible, so inadvisable.And,, be difficult to improve full light beam because of visible light transmissivity descends, so inadvisable if thickness is more than the 25 μ m.Also have, preferred 5～20 μ m, more preferably 5～15 μ m are most preferably near 10 μ m degree.
Further, as required, the average grain diameter that can contain 1～3 weight % degree in non-shiner plasma membrane is the gamma-alumina ultramicron of 10～20nm degree.At this moment, gamma-alumina is the effect of playing the adhesive of non-shiner plasma membrane.
About luminescent coating:Luminescent coating is, is that main body constitutes with the luminous shape fluorophor particle of three-wavelength, and is configured to below the thickness 30 μ m in whole non-shiner plasma membrane inner face side almost.If thickness surpasses 30 μ m, the use amount of the luminous shape fluorophor particle of three-wavelength increases, and does not meet purpose of the present invention.Be preferably 8～20 μ m, more preferably 10～15 μ m.
The luminous shape fluorophor particle of three-wavelength constitutes, and the fluorophor particle separately that mixes red light-emitting phosphor, green emitting fluorophor and blue-light-emitting fluorescent material produces white luminous according to the additive color mixed light.Red light-emitting phosphor can use as europium activated yttria fluorophor (being commonly referred to as " YOX ") etc.The green emitting fluorophor can use as cerium, terbium activating phosphatase lanthanum or terbium and activate cerium terbium magnalium fluorophor (being commonly referred to as " CAT ") etc.Blue-light-emitting fluorescent material can use as europium and activate strontium phosphate fluophor, europium activation strontium barium calcium phosphate fluorophor (being commonly referred to as " apatite ") and europium activated barium magnalium fluorophor (being commonly referred to as BAM) etc.Also have, the average grain diameter of the luminous shape fluorophor particle of three-wavelength is 2～10 μ m, preferred 5 μ m ± 2 μ m, most preferably 5 μ m ± 1 μ m.Also have, among the present invention, the average grain diameter of fluorophor and described non-luminescent substance particle is according to Ku Leer multistage screening device (Coulter Multisizer).
One example of the chemical formula of the luminous shape fluorophor of above-mentioned each three-wavelength is expressed as follows.
1 red light-emitting phosphor
(1) europium activated yttria fluorophor
Y 2O 3:Eu
2 green emitting fluorophor
(1) cerium, terbium activating phosphatase lanthanum
LaPO 4:Ce，Tb
(2) terbium activates cerium terbium magnalium fluorophor
(CeTb)MgAl 11O 19:Tb
3 blue-light-emitting fluorescent materials
(1) europium activates the strontium phosphate fluophor
Sr 5(PO 4) 3Cl:Eu
(2) europium activates strontium barium calcium phosphate fluorophor
(SrCaBa) 5(PO 4) 3Cl:Eu
(3) europium, manganese activated barium magnalium fluorophor
BaMg 2Al 16O 27:Eu，Mn
About pair of electrodes: pair of electrodes is to be arranged such that to discharge in that the light transmission discharge vessel is inner.For example be encapsulated into the both end sides of light transmission discharge vessel, the low-pressure mercury vapour discharge takes place betwixt.Also have, electrode can use known electrodes such as filament electrode, ceramic electrode, cold cathode.
Filament electrode has, and coating electronic emission material on the coiled coil of tungsten or triple coil is with continue at the point place that connects a pair of inner lead-in wire of the light transmission discharge vessel airtightly structure of line of its two ends.
Ceramic electrode has, in as the conductivity container that possesses peristome, take in by oxide based on alkali earths element and transition metal element, the hot electron that surperficial granular, the spongy or block composite ceramics of fruit that covers with the carbide or the nitride of transition metal constitutes is emitted the structure of material, is being supported by the tip of an inner lead-in wire.
About discharge medium: in order to carry out the low-pressure mercury vapour discharge, discharge medium contains mercury and rare gas.
Mercury is, encloses liquid mercury, or as the amalgam that shows the mercury vapor pressure characteristic that almost approaches liquid mercury, enclose as the amalgam of Zn-Hg or Ti-Hg system.When enclosing liquid mercury, can drip liquid mercury, or be put into enclose in the capsule after, destroy capsule by suitable means and take out mercury.Also have, when enclosing, can be shaped to the pill shape, or the proper metal plate is carried amalgam as matrix as amalgam.Be that Zn-Hg is fit to be loaded on the metallic plate when being amalgam.The latter also is called mercury and emits alloy, by heating and emit mercury by applying high frequency waves after inclosure.
Then, rare gas is to become easily for the discharge that makes fluorescent lamp starts, and use as buffer gas, in inclosure 200～400Pa degree light transmission discharge vessels such as argon Ar, krypton gas Kr, neon Ne.Also have, rare gas is to enclose the Ar monomer, also can Ar-Kr, Ne-Ar-Kr, Ne-Ar etc. mixes and enclose.
About effect of the present invention:Among the present invention, incide luminescent coating, excite the luminous shape fluorophor particle of three-wavelength to produce visible light by the ultraviolet ray of discharge radiation.But part ultraviolet ray sees through luminescent coating and incides non-shiner plasma membrane.The non-luminescent substance particle that constitutes non-shiner plasma membrane improves the probability that excites the luminous shape fluorophor particle of three-wavelength because of ultraviolet ray being had the ultraviolet ray that highly reflective reflects incident so incide luminescent coating once more.And then the luminous efficiency of the visible light of luminescent coating increases.Like this, the non-shiner plasma membrane of the visible light transmissive of generation exports to the outside and illumination is contributed from the light transmission discharge vessel.So, even the thickness of luminescent coating is reduced to the thickness degree of non-shiner plasma membrane, and then reducing the use amount of fluorophor, the full light beam of fluorescent lamp also can be maintained to and the degree much at one that does not reduce the fluorescence scale of construction.To this, be that non-shiner plasma membrane and the fluorophor comparison that main body constitutes can obtain quite at an easy rate with the strontium pyrophosphate, so can reduce the manufacturing cost of fluorescent lamp.And strontium pyrophosphate is because of obtaining more at an easy rate than alpha-aluminium oxide, so can further reduce manufacturing cost.
Also have, the non-luminescent substance particle of highly reflective that constitutes non-shiner plasma membrane is more than the 1.0 μ m because of its average grain diameter, so by disposing non-shiner plasma membrane at whole light transmission discharge vessel inner face almost, although use amount is many, but specific area is comparatively speaking little, so exhaust is easy.So do not exist the exhaust of light transmission discharge vessel to hinder the problem of fluorescent lamp outputization.
Further, strontium pyrophosphate is because of the good dispersion in slurries, so the formation of the modulation of slurries and non-shiner plasma membrane is easy.Further good because of the non-luminescent substance dispersion of nano-particles of the high reflectance in non-shiner plasma membrane, so do not produce the problem that hinders the ultraviolet reflection effect in the prior art 1.
Also have, non-shiner plasma membrane also plays the diaphragm that the deterioration of the fluorophor that alkaline components that inhibition separates out from the glass that constitutes the light transmission discharge vessel causes or mercury follow disappearance that the reaction with alkaline components causes or light beam to descend.
The fluorescent lamp of the invention of the 2nd aspect of the present invention is characterised in that: possess: the light transmission discharge vessel that is made of glass envelope; By mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is that the gamma-alumina particulate that above non-luminescent substance particle of high reflectance of 1.0 μ m and average grain diameter are 10～100nm forms, and the thickness that is disposed at almost whole light transmission discharge vessel inner face side is the non-shiner plasma membrane of 3～25 μ m; With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With the discharge medium of enclosing light transmission discharge vessel inside.
The present invention stipulates that non-shiner plasma membrane is by constituting that non-luminescent substance particle of high reflectance and gamma-alumina particulate form.
It is 10～100nm's that the gamma-alumina particulate uses its particle diameter.Also having, is the little gamma-alumina particulate of 1/100～1/10 degree if use for the average grain diameter based on the non-luminescent substance particle of the high reflectance of strontium pyrophosphate, and the gamma-alumina particulate also plays the effect of adhesive for the high reflectance material particle.
Also have, the gamma-alumina particulate can mix 5～60 weight % of the non-luminescent substance particle of high reflectance, preferred 10～50 weight %.Mixed proportion can be set suitable value from reflectivity Characteristics and film-strength equal angles.
Non-shiner plasma membrane is that its thickness is necessary for 3～25 μ m, preferred 5～20 μ m, further preferred 5～15 μ m.Identical in the invention of restriction reason and the 1st aspect of the present invention.Also has the preferred 0.25mg/cm of the adhesion amount of non-shiner plasma membrane 2More than.
Like this, among the present invention, non-shiner plasma membrane shows higher reflectivity than the situation that does not contain gamma-alumina, and the reflecting ﹠ transmitting luminescent coating incides the ultraviolet ray of non-shiner plasma membrane, get back to luminescent coating once more, so excite the probability of the luminous shape fluorophor particle of three-wavelength further to improve.Its result, the visible light luminous efficiency of luminescent coating further increases.Like this, the non-shiner plasma membrane of the visible light transmissive of generation exports to the outside and illumination is contributed to the outside from the light transmission discharge vessel.So, even the thickness of luminescent coating is reduced to the thickness degree of non-shiner plasma membrane, and then reducing the use amount of fluorophor, the full light beam of fluorescent lamp also can be maintained to and the degree much at one that does not reduce the fluorescence scale of construction.
Also have, the non-luminescent substance particle of highly reflective that constitutes non-shiner plasma membrane mainly is to be made of strontium pyrophosphate, so favorable dispersibility of slurries and the non-shiner plasma membrane that obtains, and the strontium pyrophosphate particle generally can obtain more at an easy rate than alpha alumina particle, so favourable to manufacturing cost, this point is identical with the invention of the 1st aspect of the present invention.
Further, other effects among the present invention and effect are identical with the invention of the present invention the 1st aspect.
The fluorescent lamp of the invention of the 3rd aspect of the present invention is characterised in that: possess: the light transmission discharge vessel that is made of glass envelope; Be disposed at the ultraviolet radiation absorption film of almost whole light transmission discharge vessel inner face side; Contain mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is that the above non-luminescent substance particle of high reflectance of 1 μ m forms, and the thickness that is disposed at the inner face side of almost whole light transmission discharge vessel ultraviolet radiation absorption film is the non-shiner plasma membrane of 3～25 μ m; With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that can discharge in light transmission discharge vessel inside and: the discharge medium of enclosing light transmission discharge vessel inside.
The present invention has stipulated further to possess in the invention aspect the of the present invention the 1st formation of ultraviolet radiation absorption film.
During the 1st aspect of the present invention, can know from the UV-A of lamp radiation to be that the UVA of wavelength 315～400nm increases easily.UV-A that is made of the mercury bright line of the wavelength 365nm that takes place by discharge and the UV-A that takes place from fluorophor are by luminescent coating the time, and its part is absorbed by the blue-light-emitting shape fluorophor in the luminescent coating, excites this fluorophor.Its result, blue-light-emitting shape fluorophor produces blue-light-emitting.But if dispose the thickness that non-shiner plasma membrane reduces luminescent coating, correspondingly the uptake according to the UV-A of luminescent coating reduces, and its result sees through non-shiner plasma membrane to be increased from the UV-A of light transmission discharge vessel to the outside radiation.Also have, though non-shiner plasma membrane reflection UV-A is not whole reflections, a part of UV-A sees through the radiation of the outside portion of non-shiner plasma membrane.
So in the present invention, as mentioned above, configuration ultraviolet radiation absorption film between light transmission discharge vessel and non-shiner plasma membrane.The ultraviolet radiation absorption film is so long as mainly to absorb UV-A then can be any one formation.As using zinc oxide (ZnO), titanium oxide (TiO 2) and cerium oxide (CeO 2) one or more materials such as ultraviolet-absorbing such as grade.Also have, when using the ultraviolet-absorbing material of finely particulate, preferably using average grain diameter is 10～100nm degree.Preferred 0.5～2 μ m degree of thickness.
Also have, can between light transmission discharge vessel and ultraviolet radiation absorption film, dispose light transmitting conductive film, started the fluorescent lamp of shape fast.At this moment, light transmitting conductive film directly forms at the inner face of light transmission amplifier.
Further, when starting the fluorescent lamp of shape fast, the alkali metal oxide of surface coverage 0.05～1.0 weight % of fluorophor particle that can luminescent coating and at least a particulate of alkaline earth oxide such as magnesium oxide MgO.According to this, can reduce starting resistor.Also have, it is 10～100nm's that at least a particulate of alkali metal oxide and alkaline earth oxide such as magnesium oxide (MgO) can use average grain diameter.And then can improve the resistance value of the light transmitting conductive film that reduces starting resistor, so can effectively suppress the generation of EC melanism.
For this, if at least a particulate of alkali metal oxide and alkaline earth oxide is directly formed at the inner face of ultraviolet radiation absorption film, the problem that then exists full light beam to descend.
Like this, among the present invention,, reduce from the UV-A of fluorescent lamp to the outside radiation by having above-mentioned formation.
Also have, other effects of the present invention and effect are identical with the invention of the 1st aspect of the present invention.
The fluorescent lamp of the invention of the 4th aspect of the present invention is characterised in that: possess by the bending machining after forming by non-shiner plasma membrane of aftermentioned and luminescent coating and form the light transmission discharge vessel that the glass envelope of non-straight tube shape constitutes; Contain mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is the above non-luminescent substance particles of high reflectance of 1.0 μ m, and the thickness that is disposed at almost whole light transmission discharge vessel inner face side is the non-shiner plasma membrane of 3～25 μ m; With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With the discharge medium of enclosing light transmission discharge vessel inside.
The present invention has stipulated to form by bending machining behind the configuration luminescent coating formation that is suitable for fluorescent lamp of non-straight tube-like.
The glass envelope of light transmission discharge vessel is implemented bending machining after disposing diaphragm described later and luminescent coating thereon, form non-straight tube-like.Also have, " non-straight tube-like " is meant and is not straight tube-like, as allow for shapes such as swan-neck or warpage pipe.Like this, the light transmission discharge vessel allows to become as various shapes such as annular, U-shaped, semicircles by bending machining.And then the shape before the bending machining can be straight tube-like, also can be different non-straight tube-like.The thickness of non-luminescent substance and luminescent coating is the value after the bending machining.
Like this, by possessing above-mentioned formation, non-shiner plasma membrane is difficult to generation and peels off or crackle among the present invention.Its detailed mechanism is not clear fully, but think, the average grain diameter of the non-luminescent substance particle of high reflectance that constitutes non-shiner plasma membrane is because of extremely big compared with the existing, so according to the bending of glass envelope and glass when stretching, mainly the motion of the non-luminescent substance particle of high reflectance that is made of strontium pyrophosphate is little with respect to its size, perhaps as previously mentioned, because of the shape of particle of strontium pyrophosphate is bar-shaped abnormity, so the cause that interparticle adhesion strengthens.But, no matter whether its reason appropriate, non-shiner plasma membrane come off or the generation of crackle obviously to reduce be true.
Also have, other effects of the present invention and effect are identical with the invention of the 1st aspect of the present invention.
The fluorescent lamp of the invention of the 5th aspect of the present invention is characterised in that: possess: the light transmission discharge vessel that is made of glass envelope; Be disposed at the light transmitting conductive film of almost whole light transmission discharge vessel inner face side; Contain mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is.1.0 the above non-luminescent substance particle of high reflectance of μ m forms, and is disposed at almost that the thickness of the inner face side of whole light transmitting conductive film is the non-shiner plasma membrane of 3～25 μ m; With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With the discharge medium of enclosing light transmission discharge vessel inside.
The present invention has stipulated to possess the formation that is suitable for starting fast the shape fluorescent lamp of light transmitting conductive film.
About light transmitting conductive film:Light transmitting conductive film is the inner face that is disposed at almost whole light transmission discharge vessel.Wherein, " be disposed at the inner face of almost whole light transmission discharge vessel " and be meant the active surface major part partly that is disposed at the light transmission discharge vessel.And then, can not be configured in and seal or position that glass envelope connects.In addition, conducting film is meant for " light transmission ", by lose the light transmission that sees through and derive to the outside degree less by the ultraviolet irradiation of low pressure discharge radiation from the visible light that luminescent coating takes place as far as possible.So preferred visible light transmissivity is high, and preferably clear is good.
Also have, the effect of light transmitting conductive film is, the starting resistor when making quick startup shape fluorescent lamp starting, electrode and and the light transmitting conductive film of its opposed part between, across the electrostatic capacitance that forms betwixt, the concentrated area is to apply under the high electric field strength condition.Thus,, define the resistance value of light transmitting conductive film, make it have appropriate resistance value, with directly generation arc discharge between electrode after lighting a lamp not across light transmitting conductive film though promote to start.
The light transmitting conductive film of above-mentioned formation can use as conductive tin oxide film (so-called " nesa coating ", chemical formula SnO 2-n) or formation such as ITO film.Nesa coating produces free electron by oxygen vacancies, shows as semiconductor.Thickness is generally the hundreds of nanometer, visible light transmissivity is more than 90%, by suitable setting such as the condition of interpolation impurity, can be controlled at resistance value the scope of tens k Ω～a few M Ω Q/ mouths (resistance value between the opposed pair of end edge of square-shaped planar).
Further, light transmitting conductive film can be used for the known various methods formation that film forms with infusion process, spray-on process and CVD method etc.
Like this, by possessing above-mentioned formation, be difficult to produce the EC melanism among the present invention.Its detailed mechanism is not clear fully, but think, the average grain diameter of the non-luminescent substance particle of high reflectance that mainly is made of strontium pyrophosphate that constitutes non-shiner plasma membrane is because of extremely big compared with the existing, so the thickness of non-inevitably shiner plasma membrane increases, and then the insulation distance between light transmitting conductive film and the luminescent coating increases, so that be difficult to take place the cause of the insulation breakdown of non-shiner plasma membrane.But no matter whether its reason is appropriate, it is true that the EC melanism is obviously suppressed.
Also have, other effects and effect among the present invention are identical with the invention of the 1st aspect of the present invention.
The fluorescent lamp of the invention of the 6th aspect of the present invention is characterised in that: possess: the light transmission discharge vessel that is made of glass envelope; Be disposed at the light transmitting conductive film of almost whole light transmission discharge vessel inner face side; Contain mainly by strontium pyrophosphate (Sr 2P 2O 7) average grain diameter that constitutes is that the above non-luminescent substance particle of high reflectance of 1.0 μ m forms, and contain particulate at least a in alkali metal oxide and the alkaline-earth metals oxide 0.05～10 weight %, being disposed at almost, the thickness of the inner face side of whole light transmitting conductive film is the non-shiner plasma membrane of 3～25 μ m; Be disposed at the luminescent coating of almost whole non-shiner plasma membrane inner face side; Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With the discharge medium of enclosing light transmission discharge vessel inside.
The present invention has stipulated to possess the formation that is suitable for starting fast the shape fluorescent lamp of light transmitting conductive film.
Alkali metal oxide that non-shiner plasma membrane contains and at least a particulate of alkaline earth oxide are generally 0.05～10 weight %, preferred 0.1～1.0 weight %.If at least a atomic content of alkali metal oxide and alkaline earth oxide then can't obtain effective decline of starting resistor, so inadvisable less than 0.05 weight %.Also have, if above-mentioned content surpasses 10 weight %, then the discharging amount of impure gas becomes too much, is easy to generate the longitudinal crack of glass, so also inadvisable.Also has the preferred 10～100nm of the average grain diameter of alkali metal oxide and alkaline earth oxide.
Like this, among the present invention, at least a effect of particulate performance getter, electronics supply effect and the secondary electron of alkali metal oxide that contains in the non-shiner plasma membrane and alkaline earth oxide are emitted effect.Its result, the starting resistor of fluorescent lamp descends.So, can bring up to the value that does not have EC melanism misgivings to the resistance value of light transmitting conductive film.
On the other hand, the uv reflectance well of the non-luminescent substance particle of high reflectance that mainly constitutes by strontium pyrophosphate in the non-shiner plasma membrane.Also have, at least a particulate of alkali metal oxide and alkaline earth oxide is compared with existing state by the fluorophor particle surface coverage, tail off because of arriving this atomic ultraviolet ray, so this particulate can be not painted because of ultraviolet ray, the decline that produces full light beam hardly.
Also have, other effects and effect among the present invention are identical with the invention of the 1st aspect of the present invention.
The fluorescent lamp of the invention of the 7th aspect of the present invention is characterised in that: to the fluorescent lamp of the arbitrary record in the 1st aspect to 6 of the present invention, the thickness of its non-shiner plasma membrane is 5～20 μ m.
The present invention has stipulated the preferred thickness of non-shiner plasma membrane.Promptly can obtain ultraviolet reflection and visible light transmissive well, effectively reduce the use amount of the luminous shape fluorophor of three-wavelength.
The fluorescent lamp of the invention of the 8th aspect of the present invention is characterised in that: to the fluorescent lamp of the 1st aspect to the arbitrary record in 7 aspects of the present invention, described non-shiner plasma membrane is, for mainly by strontium pyrophosphate (Sr 2P 2O 7) the non-luminescent substance particle that constitutes, be that the gamma-alumina particulate of 10～100nm forms to mix average grain diameter in the scope below the 60 weight %.
If the gamma-alumina particulate is in 1～5 weight %, in the scope of preferred 1～3 weight %, then as the adhesive that to average grain diameter is the non-luminescent substance particle of high reflectance more than the 1 μ m by Van der Waals force, it is effective improving non-luminescent substance film strength, if at 5～60 weight %, the scope of preferred 10～50 weight % can be effective to further raising reflectivity.
The fluorescent lamp of the invention of the 9th aspect of the present invention is characterised in that: to the fluorescent lamp of the arbitrary record in the 1st aspect to 8 of the present invention, for described non-shiner plasma membrane, with respect to the reflectivity of barium sulfate, more than 1.5 times of reflectivity that its reflectivity at wavelength 254nm is wavelength 780nm.
The present invention stipulated non-shiner plasma membrane for ultraviolet reflectivity with for the optimization ratio of the reflectivity of visible light.That is,, the ultraviolet amount to the luminescent coating reflection is increased really by the ultraviolet reflection rate of diaphragm and the relation of visible reflectance are satisfied above-mentioned condition.
The fluorescent lamp of the invention of the 10th aspect of the present invention is characterised in that: to the fluorescent lamp of the 1st aspect to the arbitrary record in 9 aspects of the present invention, for described non-shiner plasma membrane, it is more than 60% at the reflectivity of wavelength 254nm with respect to the reflectivity of barium sulfate, and it is below 60% at the reflectivity of wavelength 780nm with respect to the reflectivity of barium sulfate.
The present invention stipulated non-shiner plasma membrane the reflectivity of barium sulfate during as benchmark for ultraviolet reflectivity with for the optimization ratio of the reflectivity of visible light.That is be more than 70% with barium sulfate as the reflectivity of standard more preferably, at the reflectivity of wavelength 254nm.
The present invention by above-mentioned formation, can make the ultraviolet amount to the luminescent coating reflection increase really.
The lighting device of the invention of the 11st aspect of the present invention is characterised in that: possess the lighting device main body is arranged; The fluorescent lamp of the 1st aspect to the arbitrary record in 10 aspects of the present invention of by the lighting device body supports; Ignition device to the fluorescent lamp energising.
Among the present invention, " lighting device " is the wide notion that comprises luminous all devices that use with certain purpose of fluorescent lamp.Ligthing paraphernalia, straight-down negative back light device, display unit and signal lamp device etc. are arranged for example as lighting device.Also have,, be not limited thereto, also be applicable to shop ligthing paraphernalia, office's ligthing paraphernalia, outdoor use ligthing paraphernalia etc. though ligthing paraphernalia is preferred for home-use ligthing paraphernalia.Also have, " lighting device main body " is meant the remainder of removing fluorescent lamp and lamp circuit from lighting device.
Lamp circuit is the means that the fluorescent-lamp-use specified criteria is lit a lamp, and can be disposed at the lighting device main body.But, if desired, also can separate with the ignition device body portion, be disposed at as ceiling the inside etc.Also have, lamp circuit can use coil and heart yearn to be the leakage transformer of main body or choke, the high frequency waves converter electronic lamp circuit as main body.
Like this, lighting device of the present invention can play the effect and the effect of 10 aspects, the 1st aspect to the of the present invention.
Description of drawings
The part of an embodiment of Fig. 1 fluorescent lamp of the present invention is cut province's front schematic view.
The expansion sectional schematic diagram of the tube end that Fig. 2 is the same.
The electron micrograph of the strontium pyrophosphate that Fig. 3 is the same enlarges key position side sectional drawing.
Fig. 4 represents the expansion key position side sectional drawing of second embodiment of fluorescent lamp of the present invention;
The chart of the relation of the full light beam when changing the luminescent coating thickness in second embodiment of expression the present invention.
The chart of the relation of the full light beam when Fig. 5 represents to change the thickness of the same non-shiner plasma membrane.
Fig. 6 represents that the key position of the 3rd embodiment of fluorescent lamp of the present invention enlarges sectional drawing.
Fig. 7 represents to cut province's front elevation as the part of the circline of the 4th embodiment of fluorescent lamp of the present invention.
The expansion side sectional drawing of the tube end before the same glass envelope bending machining of Fig. 8.
Fig. 9 represents that the key position of the 5th embodiment of fluorescent lamp of the present invention enlarges sectional drawing.
Figure 10 represents that the courtyard of an embodiment as lighting device of the present invention of the present invention directly installs the oblique view of shape fluorescent lamp utensil.
Embodiment
Below, with reference to description of drawings embodiment of the present invention.
Fig. 1 to Fig. 3 represents the straight-pipe fluorescent lamp as first embodiment of fluorescent lamp of the present invention, and Fig. 1 cuts province's front elevation for a part, and Fig. 2 is the expansion sectional drawing of tube end, and Fig. 3 is the electron micrograph of strontium pyrophosphate.The present embodiment is corresponding to the invention of claim 1 record.Fluorescent lamp possesses light transmission discharge vessel 1, non-shiner plasma membrane 2, luminescent coating 3, pair of electrodes electrode 4,4, inner lead-in wire 5, outside lead-in wire 6 and lamp holder 7.
Light transmission discharge vessel 1 is to be made of glass envelope 1a, a pair of tubaeform stem stem 1b, 1b, forms the mouth-sealed portion at two ends.Glass envelope 1a is made of soda lime glass.Tubaeform stem stem 1b has blast pipe 1b1 and tubaeform 1b2, seals up a pair of inner lead-in wire 4 and outside lead-in wire 5.When blast pipe 1b1 was the cardinal extremity tap, the tip was communicated in the light transmission discharge vessel 1.Tubaeform 1b2 is formed bubble-tight light transmission discharge vessel 1 by the sealing two ends of glass envelope 1a.
Non-shiner plasma membrane 2 is that to contain the average grain diameter that mainly is made of strontium pyrophosphate be that the non-luminescent substance particle of high reflectance more than the 1 μ m forms.Be disposed at the whole inner face except both ends of light transmission discharge vessel 1 then.The strontium pyrophosphate particle as shown in Figure 3, its shape of particle is bar-shaped abnormity.Also have, Fig. 3 is the electron scanning micrograph that strontium pyrophosphate is enlarged 5000 times of expressions.
Luminescent coating 3 is to be made of the luminous shape fluorophor particle of three-wavelength, and attach configuration is in the inner face of the non-shiner plasma membrane 2 of light transmission discharge vessel 1.
Once electrode the 4, the 4th,, the both is that coating electronic emission material forms on the tungsten filament filament of doublet cast, the line that continues is in the point of a pair of inner lead-in wire 5,5 described later.
Inner lead-in wire 5 and outside lead-in wire 6 are inner by the connection of dumet silk at the tubaeform stem stem 1b of light transmission discharge vessel 1, and tubaeform stem stem 1b is kept air-tightness.Blast pipe 1b1 shown in Figure 2 be at light transmission discharge vessel 1 exhaust, seal after enclosing.
Lamp holder 7 possesses on the cap shape moulding product 7a of aluminum insulation ground and supports and possess a pair of lamp holder pin 7a, 7a, installs at the two ends of light transmission discharge vessel 1 that it is a pair of.
Discharge medium is to be made of mercury and rare gas, encloses in the light transmission discharge vessel 1.
Embodiment 1
Fluorescent lamp is a FL20SS/18 shape, and the caliber of light transmission discharge vessel 1 is that 28mm, pipe range are that 580mm, total length are below the 595.5mm.
Light transmission discharge vessel 1; Barium sulfate glass
Non-shiner plasma membrane; Thickness 10 μ m, the strontium pyrophosphate of average grain diameter 3 μ m
Luminescent coating; Thickness 10 μ m
Red light-emitting phosphor; Y 2O 3: Eu
The green emitting fluorophor; LaPO 4: Ce, Tb
Blue-light-emitting fluorescent material; BaMg 2Al 16O 27: Eu, Mn
Discharge medium; Liquid mercury and the argon Ar of enclosing with 330Pa pressure.
Full light beam; For the luminescent coating that possesses thickness 20 μ m and except not having non-shiner plasma membrane other comparative example 3 of embodiment same procedure is arranged is 98%.
Then, the variation of the full light beam when changing the thickness of luminescent coating 2 for the thickness of fixing non-shiner plasma membrane 7 and, the fixing thickness of the luminescent coating 2 and variation of full light beam when changing the thickness of non-shiner plasma membrane 7 describes with reference to Fig. 4 and Fig. 5.Among each figure, the longitudinal axis is represented full light beam (%).
Fig. 4 is the chart of the relation of full light beam when changing the luminescent coating thickness in first embodiment of expression fluorescent lamp of the present invention.Among the figure, transverse axis is represented the thickness (μ m) of luminescent coating.Figure is fixed as 17 μ m to the thickness of non-shiner plasma membrane 7, and the full light beam of measuring when changing the thickness of luminescent coating 2.As can be known when the thickness of luminescent coating 2 be 7 μ m when above, can obtain high full light beam.
Fig. 5 is the chart of the relation of the full light beam of expression when changing the thickness of the same non-shiner plasma membrane.Among the figure, transverse axis is represented the thickness (μ m) of non-shiner plasma membrane.Figure is fixed as 10 μ m to the thickness of luminescent coating 2, and the full light beam of measuring when changing the thickness of non-shiner plasma membrane 7.Inferring full light beam does not have big variation for the thickness of non-shiner plasma membrane 7, can access higher full light beam when 5 μ m are above.
Then, second embodiment to fluorescent lamp of the present invention describes.The present embodiment is corresponding to the invention of the 2nd aspect of the present invention.The structure of fluorescent lamp is identical with Fig. 1 and Fig. 2 except the formation of non-shiner plasma membrane 2.Non-shiner plasma membrane 2 is to mix the non-luminescent substance particle 67 weight % of high reflectance that the strontium pyrophosphate particle by average grain diameter 3 μ m constitutes, and average grain diameter is the gamma-alumina particulate 33 weight % of 10～30nm, and thickness is about 10 μ m.
Characteristic for the fluorescent lamp of studying the present embodiment compares the contrast between example 1 and 2.Comparative example 1 is, except the luminescent coating thickness is that 20 μ m do not have the non-shiner plasma membrane, is identical formation with second embodiment; Comparative example 2 is, except the luminescent coating thickness is 12 μ m and uses the alpha-aluminium oxide particulate as the non-luminescent substance particle, is identical formation with second embodiment.Also have, " peeling off " is the visual assessment according to the glass envelope outward appearance, and " melanism " is according to after the beginning of lighting a lamp, and judges situation occurred separately through the visual assessment of the glass envelope outward appearance after 1000 hours.Relatively the results are shown in table 1.
Table 1
The full light beam of data fluorophor adhesion amount peels off melanism
The present embodiment 1.4g 98% 00
Comparative example 1 2.0g 100% 00
Comparative example 2 1.6g 98% 0 *
As can be understood from Table 1, the fluorescent lamp of the present embodiment can be compared the generation that can suppress the fluorescent lamp melanism with comparative example 2 in the use amount of doing one's utmost to suppress to cut down fluorophor when full light beam descends.The melanism that betides the fluorescent lamp of comparative example 2 is considered to, and the average grain diameter of alpha alumina particle is less than 1 μ m, and the gas concentration of attracting deposits is compared with the present embodiment and wanted many, and mercury vapour becomes the cause of mercury compound with attracting deposits gas reaction.
Fig. 6 is that the key position of the 3rd embodiment of expression fluorescent lamp of the present invention enlarges sectional drawing.The present embodiment is corresponding to the invention of the 3rd aspect of the present invention.Among the figure, pay same-sign and omit its explanation for the part identical with Fig. 2.Symbol 8 expression ultraviolet radiation absorption films.
Ultraviolet radiation absorption film 8 be by, contain the titanium oxide TiO that 50% average grain diameter is 10～100nm separately with weight ratio 2And cerium oxide (CeO 2) the film of thickness 1 μ m constitute.Also have, ultraviolet radiation absorption film 8 is formed between light transmission discharge vessel 1 and the non-shiner plasma membrane 2.And among the figure, symbol 9 is light transmitting conductive films.
By the present embodiment, reduce the radiation of UV-A.
Fig. 7 and Fig. 8 represent that Fig. 7 cuts province's front elevation for a part as the circline of the 4th embodiment of fluorescent lamp of the present invention, and Fig. 8 is the expansion side sectional drawing of the tube end before the glass envelope bending machining.Among each figure, pay same-sign and omit its explanation for the part identical with Fig. 1 and Fig. 2.The present embodiment is corresponding to the invention of the 4th aspect of the present invention.
Be formed with on the mouth-sealed portion at the two ends of light transmission discharge vessel 1, as shown in Figure 8, by the 1a1 of casting mold portion that uses the glass envelope before the bending machining metal pattern moulding mouth-sealed portion to form at the thermoplastic state.The 1a1 of this casting mold portion is being shaped as light transmission discharge vessel 1 non-straight tube shape, promptly is shaped as in the present embodiment when circular, plays the effect of chuck.
The blast pipe 1b1 of tubaeform stem stem 1b be at light transmission discharge vessel 1 exhaust, seal after enclosing.For this, the blast pipe on the not shown other end of light transmission discharge vessel 1 is before the bending machining of carrying out light transmission discharge vessel 1, not seal in advance when having the pressure differential state inside and outside light transmission discharge vessel 1.
Non-shiner plasma membrane 2 is with formation shown below, at the inner face of light transmission discharge vessel 1, is disposed at except sealing two ends portion the almost all of part.That is, diaphragm be mainly by the strontium pyrophosphate of the about 5 μ m of average grain diameter as the non-luminescent substance particle of high reflectance, and be the formation that the gamma-alumina of 10～20nm adds about 1 weight % as adhesive with average grain diameter, its thickness be average about 10 μ m.
Luminescent coating 3 be the luminous shape fluorophor particle of three-wavelength as principal component, and be average grain diameter the formation that the gamma-alumina of 10～20nm adds about 1 weight % as adhesive, its thickness is average about 10 μ m, is disposed at the inner face of non-shiner plasma membrane 2.
Lamp holder 7 is to possess the structure that four lamp holder pin 7a form on the plastic product of moulding in two.Like this, between two ends, and seize the 1a1 of casting mold portion at the two ends of light transmission discharge vessel 1 on both sides by the arms from both sides, be installed on the light transmission discharge vessel 1 by bridge joint light transmission discharge vessel 1.
The bending machining of light transmission discharge vessel 1 is carried out according to following main points.Promptly, behind non-shiner plasma membrane 2 of the inner face overlay configuration of straight tube shape glass envelope and luminescent coating 3, sealing up at the glass envelope two ends separately, a pair of tubaeform stem stem 1b of installing electrodes 4 forms mouth-sealed portion, then mouth-sealed portion shaping under the thermoplastic state formation 1a1 of casting mold portion, to make the light transmission discharge vessel 1 of straight tube-like.Thereafter, the whole light transmission discharge vessel 1 of thermoplastic clamps the one end casting mold 1a1 of portion, and the light transmission that hangs down discharge vessel 1 is fixed in the 1a1 of another casting mold portion on the frame of drum type.Then, by the rotating frame light transmission discharge vessel 1 of reeling, carry out the bending machining of light transmission discharge vessel 1, light transmission discharge vessel 1 is shaped as ring-type.
Make 50 of the fluorescent lamps that formation with the embodiment of above explanation changed non-shiner plasma membrane separately, to peeling off and crackle of non-shiner plasma membrane 2, being shown in table 2 and table 3 with comparative example by the result who estimates detection.Also have, comparative example is, except the principal component of non-shiner plasma membrane is that the non-luminescent substance particle of high reflectance is that average grain diameter is the gamma-alumina of 10～20nm, and all the other and the fluorescent lamp of the identical making of the present embodiment.Also have, the meaning of each mark is as follows in each table.The peeling off of table 3 is based on scratches with the tip of the bar material with given rigidity that the result that scrapes non-shiner plasma membrane estimates.
Mark zero △ * Table 2 (crackle) is not almost not a little obviously obviously Table 3 (peeling off) not a little not OK
Table 2
Non-luminescent substance thickness (μ m) 0.1 1.0 3.0 5.0 10.0 20.0 Comparative example (crackle) zero * * * * * The present invention's (crackle) 00000 △
Table 3
Non-luminescent substance thickness (μ m) 0.1 1.0 3.0 5.0 10.0 20.0 Comparative example (peeling off) 00 △ △ * * The present invention's (peeling off) 000000
Fig. 9 is that the key position of the 5th embodiment of expression fluorescent lamp of the present invention enlarges sectional drawing.The present embodiment is corresponding to the invention of the 5th aspect of the present invention.Among the figure, pay same-sign and omit its explanation for the part identical with Fig. 2.Symbol 9 expression light transmitting conductive films.
Light transmitting conductive film 9 is to be formed by transparent nesa coating, is disposed at the inner face of almost whole light transmission discharge vessel 1.Non-shiner plasma membrane 2 is formed at the inner face of light transmitting conductive film 9.
50 of the quick startup shape fluorescent lamps of the 40W shape of making the present embodiment are studied EC melanism and full light beam with comparative example 1 and comparative example 2, and the quick startup shape fluorescent lamp of results verification the present embodiment does not have the EC melanism fully.Also have, the initial value of full light beam when not having non-shiner plasma membrane 2 is identical.
For this, comparative example 1 is, except the non-luminescent substance particle of high reflectance as the main inscape of non-shiner plasma membrane 2 is that average grain diameter is all the other and the quick startup shape fluorescent lamp of the identical making of the present embodiment the zinc oxide of 10～20nm and the titanium oxide.In the comparative example 1, though good for the EC melanism, full light beam drops to about 96% of initial value when not having non-shiner plasma membrane 2.
Also have, comparative example 2 is all the other and the quick startup shape fluorescent lamp of the identical making of the present embodiment except the non-luminescent substance particle of high reflectance as the main inscape of non-shiner plasma membrane 2 is gamma-alumina.Comparative example 2 is, though the initial value of full light beam when not having non-shiner plasma membrane 2 is identical, is easy to generate the EC melanism.
Then, the 6th embodiment to fluorescent lamp of the present invention describes.The present embodiment is corresponding to the invention of the 6th aspect of the present invention.The structure of fluorescent lamp is identical with Fig. 9 except the formation of non-shiner plasma membrane 2.
Non-shiner plasma membrane 2 is to be made of magnesium oxide particle that the strontium pyrophosphate particle of average grain diameter 4 μ m and average grain diameter are 10～100nm, and thickness is 10 μ m.Magnesium oxide is 0.5 weight % for strontium pyrophosphate, and is covered by the surface of strontium pyrophosphate particle.
Figure 10 is the oblique view that the ceiling of an expression embodiment as lighting device of the present invention of the present invention is directly installed shape fluorescent lamp utensil.Among the figure, 21 is that lighting device main body, 22 is that fluorescent lamp, 23 is discharge lamp ignition device.
Lighting device main body 21 is built-in discharge lamp ignition device 23 in inside, possesses lamp socket 21a etc.
Though fluorescent lamp 12 constitutes the part of discharge lamp ignition device, by being installed on the lamp socket 21a, illuminated apparatus main body 21 supports.
Discharge lamp ignition device 23 is that its circuit part is disposed in the lighting device main body 21.
Invention according to the 1st aspect of the present invention, by possess the light transmission discharge vessel and, the main average grain diameter that is made of strontium pyrophosphate is that the non-luminescent substance particle of high reflectance more than the 1.0 μ m forms, and the thickness that is disposed at the inner face side of almost whole light transmission discharge vessel be 3～25 μ m non-shiner plasma membrane and, with the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and the luminescent coating that the thickness 30 μ m that are disposed at almost whole non-shiner plasma membrane inner face side are following and, pair of electrodes and, discharge medium, when can be provided at the use amount that reduces the expensive luminous shape fluorophor particle of three-wavelength, the few fluorescent lamp of decline of full light beam.
Invention according to the 2nd aspect of the present invention, by non-shiner plasma membrane further by, mainly the average grain diameter that is made of strontium pyrophosphate is that the gamma-alumina particulate that non-luminescent substance particle of high reflectance more than the 1.0 μ m and average grain diameter are 10～100nm forms, when providing to ultraviolet ray performance highly reflective, the fluorescent lamp of the favorable dispersibility of the non-shiner plasma membrane of slurries and gained.
According to the invention of the 3rd aspect of the present invention,, can provide the UV-A exit dose few fluorescent lamp by configuration ultraviolet radiation absorption film between light transmission discharge vessel and non-shiner plasma membrane.
Invention according to the 4th aspect of the present invention, further constitute by the light transmission discharge vessel, can provide non-shiner plasma membrane to be difficult for producing to peel off or the fluorescent lamp of crackle by the glass envelope that the bending machining after forming according to the non-shiner plasma membrane of aftermentioned and luminescent coating forms non-straight tube shape.
According to the invention of the 5th aspect of the present invention,, provide the fluorescent lamp that is difficult for producing the EC melanism by possessing the light transmitting conductive film that is disposed at almost whole light transmission discharge vessel inner face.
According to the invention of the 6th aspect of the present invention, further contain particulate at least a in alkali metal oxide and the alkaline-earth metals oxide 0.05～10 weight % by non-shiner plasma membrane, the fluorescent lamp that can provide starting resistor to descend.
According to the invention of the 7th aspect of the present invention, by non-shiner plasma membrane further its thickness be 5～20 μ m, can provide and obtain ultraviolet reflection and visible light transmissive well, effectively reduce the fluorescent lamp of the luminous shape fluorophor of three-wavelength use amount.
Invention according to the 8th aspect of the present invention, by non-shiner plasma membrane further by, for the non-luminescent substance particle that mainly constitutes by strontium pyrophosphate, to mix average grain diameter in the scope below the 60 weight % is that the gamma-alumina particulate of 10～100nm forms, the non-luminescent substance film strength of effective raising as adhesive can be provided, perhaps effectively improve the fluorescent lamp of reflectivity.
Invention according to the 9th aspect of the present invention, pass through further for non-shiner plasma membrane, the reflectivity of relative barium sulfate, more than 1.5 times of reflectivity that its reflectivity at wavelength 254nm is wavelength 780nm can provide the fluorescent lamp that the ultraviolet amount to luminescent coating reflection is increased really.
Invention according to the 10th aspect of the present invention, pass through further for non-shiner plasma membrane, it is more than 60% at the reflectivity of wavelength 254nm with respect to the reflectivity of barium sulfate, and it is below 60% at the reflectivity of wavelength 780nm with respect to the reflectivity of barium sulfate, and the fluorescent lamp that the ultraviolet amount to the luminescent coating reflection is increased really can be provided.
Invention according to the 11st aspect of the present invention, by possess have the lighting device main body and, the fluorescent lamp of the 1st aspect to the arbitrary record in 10 aspects of the present invention of by the lighting device body supports and, to the ignition device of fluorescent lamp energising, can provide to have the lighting device of the 1st aspect of the present invention to the invention effect of the present invention the 10th aspect.

Claims (11)

1, a kind of fluorescent lamp is characterized in that: possess: the light transmission discharge vessel that is made of glass envelope;
The non-luminescent substance particle of high reflectance that contains the average grain diameter that mainly is made of strontium pyrophosphate and be 1.0 μ m～10 μ m forms, and the thickness of most inner face side that is disposed at the main position of light transmission discharge vessel is the non-shiner plasma membrane of 3～25 μ m;
With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of most inner face side at the main position of non-shiner plasma membrane;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
2, a kind of fluorescent lamp is characterized in that: possess: the light transmission discharge vessel that is made of glass envelope;
By the average grain diameter that mainly is made of strontium pyrophosphate is that the non-luminescent substance particle of high reflectance of 1.0 μ m～10 μ m and gamma-alumina particulate that average grain diameter is 10～100nm form, and the thickness of most inner face side that is disposed at the main position of light transmission discharge vessel is the non-shiner plasma membrane of 3～25 μ m;
With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of most inner face side at the main position of non-shiner plasma membrane;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
3, a kind of fluorescent lamp is characterized in that: possess: the light transmission discharge vessel that is made of glass envelope;
Be disposed at the ultraviolet radiation absorption film of most inner face side at the main position of light transmission discharge vessel;
The non-luminescent substance particle of high reflectance that contains the average grain diameter that mainly is made of strontium pyrophosphate and be 1.0 μ m～10 μ m forms, and the thickness of most inner face side at main position that is disposed at the ultraviolet radiation absorption film of light transmission discharge vessel is the non-shiner plasma membrane of 3～25 μ m;
With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of most inner face side at the main position of non-shiner plasma membrane;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
4, a kind of fluorescent lamp is characterized in that: possess: by by thermoplastic, and form the light transmission discharge vessel that the glass envelope of non-straight tube shape constitutes by bending machining;
The non-luminescent substance particle of high reflectance that contains the average grain diameter that mainly is made of strontium pyrophosphate and be 1.0 μ m～10 μ m is formed at the glass envelope inner face before the bending machining, and is disposed at the non-shiner plasma membrane of thickness 3～25 μ m of most inner face side at the main position of light transmission discharge vessel;
With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the luminescent coating below the thickness 30 μ m of most inner face side at main position of non-shiner plasma membrane before the glass envelope bending machining;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
5, a kind of fluorescent lamp is characterized in that: possess: the light transmission discharge vessel that is made of glass envelope;
Be disposed at the light transmitting conductive film of most inner face side at the main position of light transmission discharge vessel;
The non-luminescent substance particle of high reflectance that contains the average grain diameter that mainly is made of strontium pyrophosphate and be 1.0 μ m～10 μ m forms, and the thickness of most inner face side that is disposed at the main position of light transmitting conductive film is the non-shiner plasma membrane of 3～25 μ m;
With the luminous shape fluorophor particle of three-wavelength is that main body constitutes, and is disposed at the following luminescent coating of thickness 30 μ m of most inner face side at the main position of non-shiner plasma membrane;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
6, a kind of fluorescent lamp is characterized in that: possess: the light transmission discharge vessel that is made of glass envelope;
Be disposed at the light transmitting conductive film of most inner face side at the main position of light transmission discharge vessel;
The non-luminescent substance particle of high reflectance that contains the average grain diameter that mainly is made of strontium pyrophosphate and be 1.0 μ m～10 μ m forms, and contain particulate at least a in alkali metal oxide and the alkaline earth oxide 0.05～10 weight %, be disposed at the non-shiner plasma membrane of thickness 3～25 μ m of most inner face side at the main position of light transmitting conductive film;
Be disposed at the luminescent coating of most inner face side at the main position of non-shiner plasma membrane;
Be configured to the pair of electrodes that to discharge in light transmission discharge vessel inside; With
Enclose the discharge medium of light transmission discharge vessel inside.
7, as the fluorescent lamp of the arbitrary record of claim 1 to 6, it is characterized in that: the thickness of described non-shiner plasma membrane is 5～20 μ m.
8, as the fluorescent lamp of the arbitrary record of claim 1 to 6, it is characterized in that: described non-shiner plasma membrane is, for the non-luminescent substance particle that mainly constitutes, be that the gamma-alumina particulate of 10～100nm forms to mix average grain diameter in the scope below the 60 weight % by strontium pyrophosphate.
9, as the fluorescent lamp of the arbitrary record of claim 1 to 6, it is characterized in that: for described non-shiner plasma membrane, with respect to the reflectivity of barium sulfate, its reflectivity at wavelength 254nm is more than 1.5 times of reflectivity at wavelength 780nm.
10, as the fluorescent lamp of the arbitrary record of claim 1 to 6, it is characterized in that: for described non-shiner plasma membrane, it is more than 60% at the reflectivity of wavelength 254nm with respect to the reflectivity of barium sulfate, and it is below 60% at the reflectivity of wavelength 780nm with respect to the reflectivity of barium sulfate.
11, a kind of lighting device is characterized in that: possessing has: the lighting device main body;
The fluorescent lamp of the arbitrary record of claim 1 to 6 of by the lighting device body supports; With
Ignition device to the fluorescent lamp energising.
CNB021407630A 2001-07-23 2002-07-23 Fluorescent lamp and lighting device Expired - Fee Related CN1240103C (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2001221761 2001-07-23
JP221761/2001 2001-07-23
JP2001289988 2001-09-21
JP289987/2001 2001-09-21
JP289988/2001 2001-09-21
JP2001289987 2001-09-21
JP2002097666 2002-03-29
JP097666/2002 2002-03-29
JP183611/2002 2002-06-24
JP2002183611A JP2004006185A (en) 2001-07-23 2002-06-24 Fluorescent lamp and lighting device

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CN1399307A CN1399307A (en) 2003-02-26
CN1240103C true CN1240103C (en) 2006-02-01

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US20050062423A1 (en) * 2003-09-24 2005-03-24 Toshiba Lighting & Technology Corporation Fluorescent lamp and lighting appliance using thereof
JP4775642B2 (en) * 2005-06-17 2011-09-21 東芝ライテック株式会社 Fluorescent lamp and lighting device
EP1734563A3 (en) * 2005-06-17 2009-08-12 Toshiba Lighting & Technology Corporation Fluorescent lamp comprising a protective film, and illuminating apparatus therewith
JP4678775B2 (en) * 2005-12-14 2011-04-27 株式会社 日立ディスプレイズ Cold cathode fluorescent tube and liquid crystal display device using the cold cathode fluorescent tube
KR101318710B1 (en) * 2013-02-22 2013-10-16 주식회사 피에스피 Dcharge lamp for controlling linear-velocity of luminous length and method for coating transparent conducting membrane
CN109448600B (en) * 2018-12-28 2020-12-18 广东恒玻工程玻璃有限公司 Special effect glass

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JPS62234862A (en) * 1986-03-06 1987-10-15 Nec Home Electronics Ltd Fluorescent lamp
JPH0240854A (en) * 1988-08-01 1990-02-09 Nichia Chem Ind Ltd Fluorescent lamp
JP3270073B2 (en) * 1991-08-13 2002-04-02 化成オプトニクス株式会社 Fluorescent lamp
US5258689A (en) * 1991-12-11 1993-11-02 General Electric Company Fluorescent lamps having reduced interference colors
JP2000021353A (en) * 1998-06-30 2000-01-21 Toshiba Lighting & Technology Corp Fluorescent lamp and luminaire

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