CN1203521C - Fluorescent lamp and lighting device - Google Patents
Fluorescent lamp and lighting device Download PDFInfo
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- CN1203521C CN1203521C CNB021407649A CN02140764A CN1203521C CN 1203521 C CN1203521 C CN 1203521C CN B021407649 A CNB021407649 A CN B021407649A CN 02140764 A CN02140764 A CN 02140764A CN 1203521 C CN1203521 C CN 1203521C
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- particle
- fluorescent lamp
- fluorophor
- light transmission
- discharge vessel
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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
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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
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
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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
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
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Abstract
To provide a fluorescent lamp in which the quantity of three wavelength emitting phosphor is reduced and yet has a required total luminous flux, and an illumination device using the same. The fluorescent lamp comprises a translucent discharge container 1 made of glass bulb 1a, a non-luminous substance membrane 2 having a thickness of 3-25 mu m that is formed of, as a main composing element, a mixture of a non-luminous substance particle having a high reflectance of a mean particle size of 1.0 mu m or more containing strontium pyrophosphate (Sr2 P2 O7 ) having a bar shape heteromorphic particle shape and a three wavelength emitting phosphor particle, and is provided on the nearly whole inner face side of the translucent discharge container 1, a fluorescent substance layer 3 having a thickness of 30 mu m or less that is composed of mainly the three band fluorescent substance particle and is provided on the nearly whole inner face side of the non-luminous substance membrane 2, a pair of electrodes 4, 4 that are provided in the discharge container 1 so as to generate discharge, and a discharge media that is filled in the translucent discharge container 1.
Description
Technical field
The present invention relates to possess improvement luminescent coating fluorescent lamp and use the lighting device of this 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 in the clear 64-6355 communique as the spy and to put down in writing, the mean value that use contains spectral reflectance in ultraviolet arrives infrared wave-length coverage was its inanimate matter white powder material 90% or more at each wavelength as 100% o'clock for the spectral reflectance curve of magnesian cigarette film, and fluorophor, and this inanimate matter white powder material with being selected from by titanium, cerium, cadmium, caesium, antimony, potassium, scandium, zirconium, germanium, aluminium, lutetium, lanthanum, gadolinium, terbium, at least a smears in the group that boron and silicon constitute, with the luminous compositions of the coating of the ratio below the 5 weight %, form the luminescent coating of fluorescent lamp.(prior art 1)
According to prior art 1 record,, the use amount that reduces expensive terres rares fluorophor under the condition that modulation characteristic reduces in time can not caused by the inorganic white powder with the coating of given smears is matched with fluorophor.
Also have, according to the fair 2-43303 communique record of spy, to fluorophor particle, big at the reflectivity in visible light and ultraviolet wavelength zone, and have at least a with the white powder inorganic substances of this fluorophor particle same degree average grain diameter below the above about 10 μ m of average grain diameter 2 μ m, with surpassing 10% or more of described fluorophor particle total weight to the luminous compositions of 230% ratio cooperation and the mercury-vapour discharge lamp that forms by this constituent.(prior art 2).
According to prior art 2 records, compare with prior art 1, even increase considerably the decline that the amount of white powder inorganic substances also can reduce luminosity.Be being characterized as of prior art 2, can utilize the extender of white powder inorganic substances as special fluorophor.So, general condition is put down in writing into the white powder inorganic substances, " from being necessary for the chemical stability height; exactly be that the angle that is difficult to be subjected to make the non-noxious substance that the fluorescent lamp process condition changes is considered; preferably as magnesium oxide; aluminium oxide; silicon dioxide; titanium dioxide, zirconias etc. are than oxide or its composite oxides of light metal element and contain magnesium, aluminium, calcium, titanium, zinc, strontium, zirconium, cadmium, tin, the phosphate of barium etc., silicate, the oxysalt of sulfate etc., slightly solubilities such as compound oxysalt, thermal endurance, weatherability is good and in decompression ultraviolet irradiation is had stability, and near the 190nm near the scope the 700nm, the mean value of spectral reflectance for spectral reflectance curve that magnesian cigarette rate at each wavelength as the inorganic substances that had more than 90% in 100% o'clock." further, write that " representational inorganic substances are pyrophosphate, former phosphate or their mixtures of alkaline-earth metal (preferred calcium).So ", the white powder inorganic substances have used " calcium pyrophosphate " specially in an embodiment.
Summary of the invention
The result that present inventors verify based on the light output characteristic of 2 pairs of fluorescent lamps of prior art, even the white powder inorganic substances also can have lowly because of its ultraviolet reflection characteristic of material, when being mixed in luminescent coating, these inorganic substances can't obtain the output of sufficient light.On the other hand, the terres rares fluorophor generally is to mix red light-emitting phosphor, green emitting fluorophor and blue-light-emitting fluorescent material to use as the luminous shape fluorophor of three-wavelength.But the fluorophor separately of each illuminant colour is because of corresponding to its its proportion of different chemical compositions and shape of particle difference, so be difficult to each fluorophor particle is formed with even blending ratio in the glass envelope of long glue sheet.
Also having, when forming luminescent coating, generally is to be modulated at the phosphor suspension that adds adhesive and adhesive in the solvent, and it is run down into the inside of glass envelope, fluorophor is attached to its inner face, further the calcination glass envelope.Like this, solvent evaporates, the glass envelope burning, fluorophor particle is bonding by adhesive, forms luminescent coating in the glass envelope inner face side.
In prior art 1 and prior art 2, if the phosphor suspension of the luminous shape fluorophor of three-wavelength is flowed down to glass envelope inside, the easily variation of the luminescent chromaticity that causes luminescent coating in the inflow side and the outflow side of suspension (below be referred to as " pipe end aberration ".When promptly mixing two or more fluorophor and forming luminescent coating, the problem that exists the pipe end aberration to occur significantly according to the combination of fluorophor.When being commonly referred to as the europium of BAM, manganese activated barium magnalium fluorophor as using as blue-light-emitting fluorescent material, though know and can access high full light beam, because of the pipe end aberration remarkable all the more, so be difficult to use always.Also have,, also be easy to generate the pipe end aberration for adding the situation that the germanate fluorophor mixes at the luminous shape fluorophor of three-wavelength.
The present inventor notices that according to the inorganic substances difference, the ultraviolet reflection rate has difference, or creates a difference on the pipe end aberration just when fluorophor mixing inorganic substances are studied.Based on the result that this opinion is further investigated, find to be the strontium pyrophosphate Sr of bar-shaped abnormity by the shape of particle of using inorganic substances
2P
2O
7, can highly stableization light output characteristic, perhaps can effectively suppress the pipe end aberration.
The present invention is based on that above-mentioned discovery carries out, its purpose is, provide the light output characteristic highly stable, perhaps when effectively reducing the pipe end aberration, under the situation of the use amount that reduces the luminous shape fluorophor of three-wavelength, have the fluorescent lamp of required full light beam and use the lighting device of this fluorescent lamp.
The fluorescent lamp of the invention of claim 1 is characterised in that: possess the light transmission discharge vessel that constitutes by glass envelope and; To contain the strontium pyrophosphate (Sr that shape of particle is bar-shaped abnormity
2P
2O
7) the above non-luminescent substance particle of high reflectance of average grain diameter 1.0 μ m and the mixture of the luminous shape fluorophor particle of three-wavelength be the luminescent coating that is disposed at light transmission discharge vessel inner face side that forms of main inscape and; Be configured to the pair of electrodes that can discharge in light transmission discharge vessel inside and; Enclose the discharge medium of light transmission discharge vessel inside.
In the present invention and following each invention, not do under the situation of special declaration, the definition of term and the technical meaning are as follows.
Fluorescent lamp by manufacturing of the present invention possesses the light transmission discharge vessel at least, be formed at the luminescent coating of light transmission discharge vessel inner face side, be encapsulated in the pair of electrodes at light transmission discharge vessel two ends and enclose in the discharge medium of light transmission discharge vessel inside.Further allow to possess lamp holder etc. as required.Each inscape to the fluorescent lamp by manufacturing of the present invention describes below.
About 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 axostylus axostyle stem stem structure such as tubaeform stem stem, spherical axostylus axostyle stem stem, button oblique crank Z bar stem stem 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, swan-neck 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, is below the 2400mm along the length of tubular axis.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, and, then do not do special restriction, but generally be preferred for the soft glass of this kind 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.
About luminescent coating: fluorescent lamp of the present invention is that the mixture of non-luminescent substance particle of high reflectance and the luminous shape fluorophor particle of three-wavelength is formed luminescent coating as main inscape.
Non-luminescent substance particle: non-luminescent substance particle is the strontium pyrophosphate (Sr that shape of particle is bar-shaped abnormity
2P
2O
7) as must containing by composition, and it is by the big material of luminance factor barium sulfate at each wavelength of wavelength 200～800nm scope of high reflectance, outer as by aluminium oxide (Al as above-mentioned strontium pyrophosphate
2O
3), calcium pyrophosphate (Ca
2P
2O
7) wait the particle of formation.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 bent intermediate becomes shapes such as ヘ shape (clench nail shape), V-arrangement, branch shape, compares the meaning that is tangible abnormity with spheroid.In order to obtain the strontium pyrophosphate Sr that shape of particle is this abnormity
2P
2O
7, at high temperature sintering more than 1000 ℃, the material of the highly purified crystallization manufacturing of purifying is effective this material in use.Like this, strontium pyrophosphate becomes high-purity, and it is extremely high to become the ultraviolet reflection rate, and causes the crystalline solid of self light absorption hardly.The shape of particle of this crystalline solid is because of becoming bar-shaped abnormity easily, so become the selected target of materials used.
The non-luminescent substance particle of high reflectance shared ratio in all that shape of particle is the strontium pyrophosphate of bar-shaped abnormity allows the scope at broad, generally contains more than the 10 weight %, and more than the preferred 30 weight %, 50～100 weight % most preferably.Also have, the interpolation ratio of the non-luminescent substance particle of high reflectance that contains at luminescent coating is to be generally 1～70 weight %, preferred 10～60 weight %.And the average grain diameter of the non-luminescent substance particle of high reflectance is, comprises that the strontium pyrophosphate that shape of particle is bar-shaped abnormity is more than the average grain diameter 1 μ m, preferred 3～10 μ m.But, can in luminescent coating, add the non-luminescent substance particle of high reflectance of the ultramicron shape that forms average grain diameter 10～20nm of 1～2 weight %, as gamma-alumina of ultramicron shape etc.At this moment, the non-luminescent substance particle of the high reflectance of ultramicron shape be as adhesive between the particle of luminescent coating or the raising of the bonding force between glass wall contribute.
Also have, luminescent coating is the inner face side formation at the light transmission discharge vessel.Also have; " inner face side " is meant the form that the inner face that directly is contacted with the light transmission discharge vessel forms, and becomes diaphragm that the following thickness of 5 μ m constitutes and or any one of the form that forms indirectly across the reflectance coating of titanium oxide etc. by the gamma-alumina by the ultramicron shape of average grain diameter 0.01～0.02 μ m.
The luminous shape fluorophor particle of three-wavelength constitutes, and the fluorophor particle separately that has mixed 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 the many screening washers of colter (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 configured to and can to discharge in light transmission discharge vessel inside.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 outside the point of a pair of inner lead-in wire that the connects 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 for the discharge that makes fluorescent lamp begins to become easily, and as the buffer gas use, argon Ar, krypton gas Kr, neon Ne etc. to be enclosed in 200～400Pa degree light transmission discharge vessel.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, contain the non-luminescent substance particle of high reflectance that shape of particle is the strontium pyrophosphate of bar-shaped abnormity by in luminescent coating, adding, do not incide fluorophor particle but incide the ultraviolet reflection of the non-luminescent substance particle of high reflectance, incide the probability of fluorophor particle with raising.So even reduce the use amount of fluorophor, also can make from the visible light of fluorophor particle radiation increases, and can maintain high value to the full light beam of fluorescent lamp.As, even, also compare, can obtain the full light beam of 95% degree with the situation of fluorophor 100% the non-luminescent substance particle of high reflectance situation with the interpolation of 50 weight % ratios in luminescent coating.The non-luminescent substance particle of high reflectance is quite cheap because of comparing with the luminous shape fluorophor of three-wavelength, so by reducing the use amount of the luminous shape fluorophor of three-wavelength, under the condition of keeping almost equal full light beam, can reduce the cost of fluorescent lamp.
Also have, among the present invention, by being the non-luminescent substance mix particles of high reflectance of strontium pyrophosphate of bar-shaped abnormity in luminescent coating containing shape of particle, the ultraviolet reflection rate of non-luminescent substance significantly improves, light output increases, and its light output characteristic produces error hardly, and is stable.Also have, though its mechanism does not determine that as yet the pipe end aberration reduces.Supposition is that the shape of particle of strontium pyrophosphate is bar-shaped abnormity and plays useful effect.Even and then use the many BAM of luminous quantity as blue-light-emitting fluorescent material, or use the luminous germanate fluorophor of peony, also can significantly suppress the pipe end aberration, relatively during its illuminant colour, its difference can't with the naked eye confirmed in the allowed band of degree by range estimation.Also have, the minimizing effect of pipe end aberration is to be the strontium pyrophosphate particle of bar-shaped abnormity then to show if the part of the non-luminescent substance particle of high reflectance contains shape of particle, if contain more than the 10 all weight % degree of the non-luminescent substance particle of high reflectance, then produce effect of sufficient.
The fluorescent lamp of the invention of claim 2 is characterised in that: possess the light transmission discharge vessel that constitutes by glass envelope and; To contain the strontium pyrophosphate (Sr that obtains in temperature calcination more than 1000 ℃
2P
2O
7) the above non-luminescent substance particle of high reflectance of average grain diameter 1.0 μ m and the mixture of the luminous shape fluorophor particle of three-wavelength be the luminescent coating that is disposed at light transmission discharge vessel inner face side that forms of main inscape and; Be configured to the pair of electrodes that can discharge in light transmission discharge vessel inside and; Enclose the discharge medium of light transmission discharge vessel inside.
Regulation of the present invention is as the formation of the use of the strontium pyrophosphate in the non-luminescent substance particle of high reflectance that contains in luminescent coating at high temperature sintering more than 1000 ℃.Promptly by becoming above-mentioned formation, strontium pyrophosphate crystallize into high-purity, the ultraviolet reflection rate is extremely high, and causes self light absorption hardly.Its result described in claim 1, can access light output characteristic stable fluorescence lamp.
The fluorescent lamp of the invention of claim 3 is characterised in that: for the fluorescent lamp of claim 1 or 2 records, the non-luminescent substance particle of described high reflectance is 1～70 weight % of luminescent coating.
The present invention has stipulated the optimum adding rate scope of the non-luminescent substance particle of high reflectance.That is, even 70 weight % of the non-luminescent substance particle interpolation of high reflectance luminescent coating, the full light beam of 90% degree in the time of also can obtaining fluorophor 100%.
The fluorescent lamp of the invention of claim 4 is characterised in that: for the fluorescent lamp of the arbitrary record of claim 1 to 3, the luminous shape fluorophor particle of described three-wavelength is that its blue-light-emitting fluorescent material contains europium activated barium magnalium fluorophor (BAM).
The present invention has stipulated in the luminous shape fluorophor particle of the three-wavelength of luminescent coating, uses the only formation of the high fluorophor of luminous efficiency as blue-light-emitting fluorescent material.That is, BAM is considered to the high blue-light-emitting fluorescent material of luminous efficiency.But, existed the problem that the pipe end aberration occurs significantly when using this fluorophor in the past.Among the present invention, by using shape of particle to be bar-shaped abnormity at least a portion of the non-luminescent substance particle of high reflectance or, reducing the pipe end aberration, so can in practicality, eliminate pipe end aberration problem at the strontium pyrophosphate particle of calcination more than 1000 ℃.
Like this, the full light beam of fluorescent lamp improves among the present invention.For example, compare with the full light beam of fluorescent lamp with the luminescent coating that constitutes by apatite 100% as blue-light-emitting fluorescent material, the fluorescent lamp of the present invention that possesses the identical thickness that contains the non-luminescent substance particle 50% of high reflectance, although the use amount of fluorophor particle reduces to 50%, also can access the full light beam more than 100%.
The fluorescent lamp of the invention of claim 5 is characterised in that: for the fluorescent lamp of the arbitrary record of claim 1 to 3, the luminous shape fluorophor particle of described three-wavelength contains the germanate fluorophor.
Among the present invention, though luminescent coating contains the germanate fluorophor that is easy to generate the pipe end aberration, but by using shape of particle to be bar-shaped abnormity at least a portion of the non-luminescent substance particle of high reflectance or at the strontium pyrophosphate particle of calcination more than 1000 ℃, reduce the pipe end aberration, so can in practicality, eliminate pipe end aberration problem.And because of the luminous increase of peony, so colour rendering raising.
The lighting device of the invention of claim 6 is characterised in that: possess have the lighting device main body and; The fluorescent lamp of the arbitrary record of claim 1 to 3 of by the lighting device body supports and; 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 claim 1 to 5.
Brief 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 key position side sectional schematic diagram that Fig. 2 is the same.
Fig. 3 enlarges the non-luminescent substance particle of the high reflectance strontium pyrophosphate that is used for first embodiment of fluorescent lamp of the present invention the electron scanning micrograph of 5000 times of expressions.
The chart that the addition of the non-luminescent substance particle that will be made of strontium pyrophosphate in first embodiment of Fig. 4 fluorescent lamp of the present invention and the relation of pipe end aberration are represented with its comparative example.
The chart that the relation of the addition of the non-luminescent substance particle that Fig. 5 will be made of the same strontium pyrophosphate and full light beam is represented with its comparative example.
The chart that the relation that the addition of the non-luminescent substance particle that Fig. 6 will be made of the same strontium pyrophosphate and average colour rendering are estimated number Ra is represented with its comparative example.
The light beam that Fig. 7 reaches each modification of the addition that further changes the non-luminescent substance particle that is made of strontium pyrophosphate with embodiment in first embodiment of fluorescent lamp of the present invention 2 is kept the chart of characteristic with its comparative example 2 expressions.
Fig. 8 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.
Specific embodiments
Below, with reference to description of drawings embodiment of the present invention.
Fig. 1 and Fig. 2 represent first embodiment of fluorescent lamp of the present invention, and Fig. 1 cuts province's front elevation for a part, and Fig. 2 is for enlarging key position side sectional drawing.The present embodiment is corresponding to the invention of claim 1 to 6.Among each figure, 1 is that light transmission discharge vessel, 2 is that luminescent coating, 3 is that electrode, 4 is that inner lead-in wire, 5 is that outside lead-in wire, 6 is lamp holder.The fluorescent lamp of the present embodiment is a straight-pipe fluorescent lamp.Light transmission discharge vessel 1 is to be made of glass envelope 1a, a pair of tubaeform stem stem 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.Inner lead-in wire 4 and outside lead-in wire 5 are inner by the connection of dumet silk at tubaeform stem stem 1b, and tubaeform stem stem is kept air-tightness.Blast pipe 1b1 shown in Figure 2 be at light transmission discharge vessel 1 exhaust, seal after enclosing.Luminescent coating 2 is to be made of non-luminescent substance particle of high reflectance and the luminous shape fluorophor particle of three-wavelength, is disposed at the inner face of light transmission discharge vessel 1.The strontium pyrophosphate that the non-luminescent substance particle of high reflectance is to use its shape of particle to be bar-shaped abnormity constitutes.The shape of particle of strontium pyrophosphate is shown in the photo of Fig. 3, can see being bar-shaped abnormity (hexagonal is tabular).Fig. 3 is for enlarging the non-luminescent substance particle of the high reflectance strontium pyrophosphate that is used for first embodiment of fluorescent lamp of the present invention the electron scanning micrograph of 5000 times of expressions.Electrode 3 is that coating electronic emission material forms on the tungsten filament filament of doublet cast, and the line that continues is in the point of a pair of inner lead-in wire 4.Lamp holder 6 is, possesses a pair of lamp holder pin 6a, 6a on the cap shape moulding product of aluminum, installs at the two ends of light transmission discharge vessel 1 that it is a pair of.Discharge medium is that liquid mercury and argon Ar are enclosed in the light transmission discharge vessel 1 with 330Pa pressure.
Embodiment 1
FL20SS/18 shape, the caliber of light transmission discharge vessel 1 are that 28mm, pipe range are that 580mm, total length are below the 595.5mm.
Luminescent coating; Thickness 20 μ m
(1) the luminous shape fluorophor particle of three-wavelength: average grain diameter 5 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
(2) non-luminescent substance particle: average grain diameter 3 μ m
(3) constituent ratio of each composition of luminescent coating 2 is as follows according to weight %.
The luminous shape fluorophor particle of three-wavelength: non-luminescent substance particle=50: 50
Embodiment 2
Blue-light-emitting fluorescent material; (SrCaBa)
5(PO
4)
3Cl:Eu
Other formations are identical with embodiment 1.
Be produced in further contain on the foregoing description 1 and the embodiment 2 beyond non-luminescent substance particle 10%, 30% and 70% each modification identical with embodiment 1 and embodiment 2 and, do not contain non-luminescent substance particle beyond the comparative example 1 identical and the fluorescent lamp of comparative example 2 with embodiment 1 and embodiment 2, and estimating the chart that the result of number Ra makes and represent at Fig. 4 to Fig. 6 based on measuring pipe end aberration, full light beam and average colour rendering.Also have, among each figure, transverse axis is the addition (weight %) of non-luminescent substance particle.Also expression respectively, curve A is in embodiment 1, each modification and comparative example 1 separately, connects the curve that obtains between each data, curve B is that the data that connect embodiment 2, each modification and comparative example 2 obtain curve.
Fig. 4 is the chart that the relation of the addition of the non-luminescent substance particle that will be made of strontium pyrophosphate in first embodiment of fluorescent lamp of the present invention and pipe end aberration is represented with its comparative example.Wherein, the longitudinal axis is represented pipe end aberration (%).
Fig. 5 is the chart that the relation of the addition of the non-luminescent substance particle that will be made of the same strontium pyrophosphate and full light beam is represented with its comparative example.Wherein, the longitudinal axis is represented full light beam (relative value).
Fig. 6 is the chart that the addition of the non-luminescent substance particle that will be made of the same strontium pyrophosphate and relation that average colour rendering is estimated number Ra are represented with its comparative example.Wherein, the longitudinal axis is represented average colour rendering evaluation number Ra.
Performance about fluorescent lamp:
1 pipe end aberration; Embodiment 1 and embodiment 2 and each modification are that wherein any and comparative example 1 and comparative example 2 are compared, and can affirm that the pipe end aberration significantly reduces.
2 full light beams; Embodiment 1 and embodiment 2 and each modification be, wherein any and comparative example 1 and comparative example 2 are compared, though full light beam reduces, the ratio of its reduction is few.That is, embodiment 1 is about 8%, and embodiment 2 is 7%.But, compare with comparative example 2 during embodiment 1, be almost equally, this merits attention.
Also have, along with the addition of the non-luminescent substance particle that is made of strontium pyrophosphate increases, the degree that full light beam reduces becomes big.But,, compare also with comparative example 1 and comparative example 2 and can keep 90% even the addition of the non-luminescent substance particle that is made of strontium pyrophosphate is 70% situation.
3 average colour renderings are estimated number; Embodiment 1 and embodiment 2 and each modification are that wherein any and comparative example 1 and comparative example 2 are compared, and all almost do not have difference.From can knowing,, also almost average colour rendering is not estimated the influence of number here even the addition of the non-luminescent substance particle that is made of strontium pyrophosphate changes.
Fig. 7 keeps the chart of characteristic with its comparative example 2 expressions with the light beam that embodiment in first embodiment of fluorescent lamp of the present invention 2 reaches each modification of the addition that further changes the non-luminescent substance particle that is made of strontium pyrophosphate.Also have, transverse axis represents that the time of lighting a lamp (h), the longitudinal axis represent full light beam (relative value) among the figure.Also have, curve C be embodiment 2, curve D for the addition of the non-luminescent substance particle that is made of strontium pyrophosphate is that 10% modification, curve E are that the same 30% modification, curve F are comparative example 2, waits and represents each fluorescent lamp.
As can understanding from figure, how much be significant though the light beam of the expection of lighting a lamp descends, any substantially fluorescent lamp shows that all the light beam of almost equal tendency keeps characteristic.
Embodiment 3
FL40SF shape, the caliber of light transmission discharge vessel 1 are that 28mm, pipe range are 1198mm.
Luminescent coating; Thickness 20 μ m
(1) the luminous shape fluorophor particle of three-wavelength: average grain diameter 4 μ m
Red light-emitting phosphor; Y
2O
3: Eu
The peony light-emitting fluophor; 3.5MgO0.5MgF
2GeO
2: Mn
The green emitting fluorophor; LaPO
4: Ce, Tb
Blue-light-emitting fluorescent material; (SrCaBa)
5(PO
4)
3Cl:Eu
(2) non-luminescent substance particle; Average grain diameter 3 μ m
(3) proportioning of luminous shape fluorophor particle of the three-wavelength of luminescent coating 2 and non-luminescent substance particle is as follows according to weight %.
The luminous shape fluorophor particle of three-wavelength: non-luminescent substance particle=70: 30
Modulation characteristic; Full light beam 26301m, average colour rendering estimate several 88
Then, with the modification 1～4 of the proportioning of present embodiment, the change luminous shape fluorophor particle of three-wavelength and non-luminescent substance particle and only constitute by the luminous shape fluorophor particle of three-wavelength, except the luminescent coating with thickness 20 μ m, the full light beam and the pipe end aberration of the comparative example that is made of the fluorescent lamp with the identical way of present embodiment are shown in table 1.
Table 1
The full light beam of proportioning (1m) the pipe end aberration of the non-luminescent substance particle of data
(％)
Modification 1 10 2,670 0.0038
Modification 2 30 2,630 0.0027
Embodiment 50 2,570 0.0020
Modification 3 60 2,500 0.0018
Modification 4 70 2,410 0.0015
Comparative example-2,680 0.0053
Fig. 8 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.
According to the invention of claim 1, by possess the light transmission discharge vessel and, to contain three ripples Long hair light shape fluorophor particle and shape of particle are average grain diameter 1 μ of the strontium pyrophosphate of bar-shaped abnormity The mixture of the non-luminescent substance particle of high reflectance that m is above is joining of forming of main inscape Place light transmission discharge vessel inner face side luminescent coating and, pair of electrodes and, enclose light transmission The ionization medium of discharge vessel inside can provide and can reduce the expensive luminous shape of three-wavelength The use amount of fluorophor particle, and under the condition that does not reduce full light beam, the light output characteristics is steady Fixed, the fluorescent lamp of the simultaneously pipe end aberration of luminescent coating minimizing.
According to the invention of claim 2, by possess the light transmission discharge vessel and, to contain three ripples Long hair light shape fluorophor particle and the strontium pyrophosphate that obtains in temperature calcination more than 1000 ℃ average The mixture of the non-luminescent substance particle of high reflectance that particle diameter 1.0 μ m are above is that main inscape is come The luminescent coating that is disposed at light transmission discharge vessel inner face side that forms and, pair of electrodes and, envelope Enter the ionization medium of light transmission discharge vessel inside, the pipe end that reduces luminescent coating can be provided In the time of aberration, can reduce the use amount of the expensive luminous shape fluorophor particle of three-wavelength, and And do not reduce the fluorescent lamp of full light beam.
According to the invention of claim 3, be glimmering by the non-luminescent substance particle of further high reflectance 1～70 % by weight of light body layer, 90% the when luminescent coating that only has for fluorophor can be provided More than the fluorescent lamp of full light beam.
According to the invention of claim 4, by the blue-light-emitting of the luminous shape fluorophor particle of three-wavelength Fluorophor contains europium activated barium magnalium fluorophor (BAM), and full light beam height can be provided, Significantly reduce simultaneously the fluorescent lamp of pipe end aberration.
According to the invention of claim 5, contain by the luminous shape fluorophor particle of further three-wavelength The germanate fluorophor can provide that peony is luminous to have a further high colour rendering, simultaneously Significantly reduce the fluorescent lamp of pipe end aberration.
According to the invention of claim 6, by possess have the lighting device main body and, by lighting device The fluorescent lamp of the arbitrary record of claims 1 to 3 that body supports and, to fluorescent lamp energising Ignition device can provide the lighting device of the effect of the invention with claim 1 to 5.
Claims (8)
1, a kind of fluorescent lamp is characterized in that: possess the light transmission discharge vessel that constitutes by glass envelope and;
With the mixture that contains non-luminescent substance particle of high reflectance that average grain diameter that shape of particle is the strontium pyrophosphate of bar-shaped abnormity is 1.0 μ m～10 μ m and the luminous shape fluorophor particle of three-wavelength be main inscape form and be disposed at light transmission discharge vessel inner face side luminescent coating and;
Be configured to the pair of electrodes that can discharge in light transmission discharge vessel inside and;
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 constitutes by glass envelope and;
With the average grain diameter that contains the strontium pyrophosphate that obtains in temperature calcination more than 1000 ℃ be the mixture of the non-luminescent substance particle of high reflectance of 1.0 μ m～10 μ m and the luminous shape fluorophor particle of three-wavelength be main inscape form and be disposed at light transmission discharge vessel inner face side luminescent coating and;
Be configured to the pair of electrodes that can discharge in light transmission discharge vessel inside and;
Enclose the discharge medium of light transmission discharge vessel inside.
3, as the fluorescent lamp of the arbitrary record of claim 1 to 2, it is characterized in that: the non-luminescent substance particle of described high reflectance is 1～70 weight % of luminescent coating.
4, as the fluorescent lamp of the arbitrary record of claim 1 to 2, it is characterized in that: the luminous shape fluorophor particle of described three-wavelength is that its blue-light-emitting fluorescent material contains europium activated barium magnalium fluorophor.
5, the fluorescent lamp of putting down in writing as claim 3 is characterized in that: the luminous shape fluorophor particle of described three-wavelength is that its blue-light-emitting fluorescent material contains europium activated barium magnalium fluorophor.
6, as the fluorescent lamp of the arbitrary record of claim 1 to 2, it is characterized in that: the luminous shape fluorophor particle of described three-wavelength contains the germanate fluorophor.
7, the fluorescent lamp of putting down in writing as claim 3 is characterized in that: the luminous shape fluorophor particle of described three-wavelength contains the germanate fluorophor.
8, a kind of lighting device is characterized in that: possess have the lighting device main body and; The fluorescent lamp of the arbitrary record of claim 1 to 3 of by the lighting device body supports and; Ignition device to the fluorescent lamp energising.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP221761/2001 | 2001-07-23 | ||
| JP2001221761 | 2001-07-23 | ||
| JP183612/2002 | 2002-06-24 | ||
| JP2002183612A JP2003109540A (en) | 2001-07-23 | 2002-06-24 | Fluorescent lamp and illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1399306A CN1399306A (en) | 2003-02-26 |
| CN1203521C true CN1203521C (en) | 2005-05-25 |
Family
ID=26619116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021407649A Expired - Fee Related CN1203521C (en) | 2001-07-23 | 2002-07-23 | Fluorescent lamp and lighting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003109540A (en) |
| KR (1) | KR100469767B1 (en) |
| CN (1) | CN1203521C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007524972A (en) * | 2004-02-02 | 2007-08-30 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Low-pressure mercury vapor discharge lamp and compact fluorescent lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9310100D0 (en) * | 1993-05-17 | 1993-06-30 | Ge Lighting Ltd | Fluorescent lamp for use in aquaria |
| US5811924A (en) * | 1995-09-19 | 1998-09-22 | Kabushiki Kaisha Toshiba | Fluorescent lamp |
| US5905333A (en) * | 1995-09-27 | 1999-05-18 | Kabushiki Kaisha Toshiba | Low pressure mercury vapor electric discharge lamp and method of manufacturing the lamp |
-
2002
- 2002-06-24 JP JP2002183612A patent/JP2003109540A/en active Pending
- 2002-07-22 KR KR10-2002-0042866A patent/KR100469767B1/en not_active IP Right Cessation
- 2002-07-23 CN CNB021407649A patent/CN1203521C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003109540A (en) | 2003-04-11 |
| CN1399306A (en) | 2003-02-26 |
| KR20030011575A (en) | 2003-02-11 |
| KR100469767B1 (en) | 2005-02-02 |
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