CN102214545A - Fluorescent lamp - Google Patents
Fluorescent lamp Download PDFInfo
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- CN102214545A CN102214545A CN2010101574147A CN201010157414A CN102214545A CN 102214545 A CN102214545 A CN 102214545A CN 2010101574147 A CN2010101574147 A CN 2010101574147A CN 201010157414 A CN201010157414 A CN 201010157414A CN 102214545 A CN102214545 A CN 102214545A
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- fluorescent lamp
- luminous tube
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Abstract
The invention provides an ultraviolet-radiation-type fluorescent lamp in which a quartz glass luminotron is adopted, wherein the ultraviolet radioactive nature of the fluorescent lamp is high. The fluorescent lamp is characterized by comprising a glass layer, a fluorescent body layer and an ultraviolet reflector, wherein the glass layer is arranged on the back side of the luminotron in an optical irradiation direction, is formed on the side surface of a discharge space and is composed of substance with a softening point lower than that of quartz glass; the fluorescent body layer is formed on the surface at the discharge space side of the glass layer; and the ultraviolet reflector is formed between the glass layer and the luminotron.
Description
Technical field
The present invention is about a kind of fluorescent lamp of emitting ultraviolet light.
Background technology
In recent years, in purposes such as the hardening of resin of photocatalyst, broad sense, degerming, beauty treatment, medical treatment, utilized near the wavelength 300nm ultraviolet light.The light source of this purposes uses the fluorescent lamp of the ultra violet radiation type with the fluorophor that has peak value between wavelength 250～380nm.This fluorescent lamp generates the light of short wavelength's (for example 200nm is following) by discharging, produced the ultraviolet light in predetermined wavelength zone by this short wavelength's light.
Generally speaking the luminous tube of fluorescent lamp uses so-called hard glasss such as soda-lime glass, pyrex, aluminum silicate glass.But, the ultraviolet light of hard glass meeting absorbing wavelength 250～380nm, therefore the radiating light rate from lamp can reduce.
Therefore, use quartz glass but not hard glass is suggested as the fluorescent lamp of luminous tube in for example patent documentation 1,2 etc.As implied above, if luminous tube uses quartz glass, uv transmittance height then, and can take out light efficiently.
But, in the manufacturing process of fluorescent lamp, the material that constitutes luminous tube is warming up near the softening point, under this state, fluorophor is adhered to.Therefore but the softening point temperature of quartz glass is near the high temperature 1600 ℃, if when making quartz glass be heated to high temperature as implied above, fluorophor itself is understood deterioration.
On the other hand, also consider to carry out temperature, for example heating below 900 ℃ that fluorophor can deterioration, but this moment quartz glass and can dying down adhering to of fluorophor, and can produce problems such as fluorophor peels off in lamp is lit a lamp process.
Summary of the invention
Problem to be solved by this invention is to provide a kind of luminous tube to use the fluorescent lamp of quartz glass, and ultra violet radiation characteristic height.
In order to solve above-mentioned problem, fluorescent lamp of the present invention, it is fluorescent lamp with ultra violet radiation type of quartz glass system luminous tube, it is characterized by, have: in the rear side of the rayed direction of above-mentioned luminous tube, be formed on the glassy layer that constitutes by the softening point material lower of discharge space side surface than quartz glass; Be formed on the luminescent coating on surface of the discharge space side of this glassy layer; And be formed on ultraviolet reflection body between glassy layer and the luminous tube.In addition, it is characterized in that reflector is made of the film that contains silicon oxide particle and aluminium oxide particles.In addition, it is characterized in that glassy layer comprises any of pyrex powder or aluminum silicate glass powder.
According to above-mentioned formation, owing between quartz glass system luminous tube and luminescent coating, be formed with the glassy layer that constitutes by the softening point material lower than the softening point of quartz glass, by making the softening temperature of its particle surface that rises to glassy layer, can make fluorophor attached to glassy layer.In addition, the particle surface of the glassy layer of glassy layer and quartz glass is also softening, can give affixed by this with the welding of quartz glass surface local thus.In addition, between ultraviolet reflection body and the glassy layer because the particle surface of glassy layer is softening, can be with in addition affixed between the silica of ultraviolet reflection surface or aluminium oxide particles and the glassy layer.At the ultraviolet reflection body, by burning till of silica sol, form silicon oxide glass layers at particle surface, carry out affixed with quartz glass.By above formation,, therefore can make the ultraviolet ray that takes place at fluorophor obtain high emission efficiency in the specific direction reflection owing between glassy layer and luminous tube, have the ultraviolet reflection body.
Description of drawings
Fig. 1 represents the formation of fluorescent lamp of the present invention.
Fig. 2 represents other execution modes of fluorescent lamp of the present invention.
Fig. 3 represents other execution modes of fluorescent lamp of the present invention.
Fig. 4 represents other execution modes of fluorescent lamp of the present invention.
Fig. 5 represents fluorescent lamp manufacturing method of the present invention.
Fig. 6 represents experimental result of the present invention.
Fig. 7 represents experimental result of the present invention.
Embodiment
Fig. 1 represents fluorescent lamp of the present invention (following also only claim be " lamp "), (a) profile of expression long side direction, (b) the A-A profile of expression (a).
Fluorescent lamp is made of luminous tube (glass tube) 1, and at the outer wall of luminous tube 1, the mode of extending in the same manner with the long side direction at luminous tube 1 is equipped with a pair of band electrode 2 (2a, 2b).On electrode 2 (2a, 2b), be coated with diaphragm 3.Enclose in the inside of luminous tube 1 to have and be used for generating the gas of quasi-molecule by dielectric barrier discharge, the xenon of 100Torr for example, be connected with the illustrated AC power of omission at each electrode, when being provided alternating electromotive force, quartz glass as the material that constitutes luminous tube 1 is situated between therein, and dielectric barrier discharge takes place in the inside of luminous tube 1.
On the inwall of luminous tube 1, be formed with ultraviolet reflection body 4 at the about half cycle of profile direction.This ultraviolet reflection body 4 forms to stride across position that is equivalent to side's electrode 2a and the mode that is equivalent to the position of the opposing party's electrode 2b.In addition, be formed with glassy layer 5 at the inwall of luminous tube 1 and the inner face of ultraviolet reflection body 4, in addition, face within it, luminescent coating 6 form with roughly the same thickness in a circumferential direction.Glassy layer 5 and luminescent coating 6 are formed on the whole zone of inner peripheral surface of luminous tube 1, so ultraviolet reflection body 4 constitutes by glass tube 1 and luminescent coating 6 and clips.The field is taken out as light in the zone that is not formed with ultraviolet reflection body 4.In the inside of luminous tube 1, at one end applied have for example startup of paste shape to assist with electroconductive member 7.
By the ultraviolet ray that dielectric barrier discharge (dielectric barrier discharge) is taken place, for example the light of wavelength 172nm is radiated by the ultraviolet light that stimulates luminescent coating 6 to be converted into wavelength 250～380nm.This ultraviolet light directly or after ultraviolet reflecting layer 4 reflections is radiated to the lamp outside.
Fluorophor 6 uses lanthanum orthophosphate (La-P-O:Gd, Pr (hereinafter referred to as LAP:Pr, Gd, centre wavelength the 311nm)) fluorophor that strontium borate (Sr-B-O:Eu (hereinafter referred to as SBE), centre wavelength 368nm) fluorophor, lanthanum-magnesium aluminate (La-Mg-Al-O:Ce (hereinafter referred to as LAM), centre wavelength 338nm (but be the broad)) fluorophor of cerium activation, gadolinium, the praseodymium of the activation of europium for example activate etc.The equal absorbing wavelength of these fluorophor is less than the ultraviolet light in the zone of 250nm, and the ultraviolet ray of the centre wavelength band that converts to respectively to be had.
Electrode is by for example silver or golden, aluminium strip formations such as (aluminum tape).Wherein, also can be the linearity electrode, but not be defined in band electrode.
Fluorescent lamp of the present invention is formed with the glassy layer 5 that is made of the softening point material lower than the softening point of quartz glass between quartz glass system luminous tube 1 and luminescent coating 6.Therefore, can make its heating by softening temperature, and make fluorophor (constituent material of luminescent coating 6) attached to glassy layer 5 with glassy layer 5.In addition, glassy layer 5 also can carry out under the softening temperature of glassy layer 5 with the affixed of quartz glass 1.In addition, owing between glassy layer 5 and luminous tube 1, have ultraviolet reflection body 4, therefore can obtain high emission efficiency in the specific direction reflection by making ultraviolet ray.
The variation of the profile construction of the fluorescent lamp shown in Fig. 2 presentation graphs 1 (b).Particularly, the thickness of the luminescent coating 6 of the fluorescent lamp shown in Fig. 1 (b) is roughly the same at circumferencial direction, and with respect to this, the thickness of the luminescent coating of the fluorescent lamp shown in Fig. 2 (a) changes at circumferencial direction.More specifically, in the luminescent coating 6, have the regional thickening of ultraviolet reflection body 4, do not have field (that is the light taking-up field) attenuation of ultraviolet reflection body 4.
The advantage of this structure is taken out luminescent coating 6 attenuation in field by making light, can be lifted at the ultraviolet transmitance that ultraviolet reflection body 4 is reflected, can apply at luminescent coating 6 simultaneously and will convert the ultraviolet light of wavelength 250～380nm to, and can promote the uitraviolet intensity of total by the ultraviolet ray that dielectric barrier discharge took place.
In addition, in the fluorescent lamp shown in Fig. 2 (b), luminescent coating exists only in the field with ultraviolet reflection body 4, is not present in the field with ultraviolet reflection body 4, that is is not present in light taking-up field.
The advantage of this structure is: disappear by the luminescent coating 6 that makes light take out the field, can be lifted at the ultraviolet transmitance that ultraviolet reflection body 4 is reflected, compared to the situation of Fig. 2 (a), make more or less freely.
Fig. 3 also represents the variation of the profile construction of fluorescent lamp shown in Figure 1.Particularly, the section shape of the luminous tube of fluorescent lamp shown in Figure 1 is circular, and with respect to this, the section shape of the luminous tube of fluorescent lamp shown in Figure 3 is rectangular-shaped.Therefore, generally speaking execution mode shown in Figure 3 is the luminous tube of flat pattern.
Wherein side outer surface at luminous tube 1 is provided with side's electrode 2a, is provided with the opposing party's electrode 2b at the opposing party's outer surface.Each electrode forms netted, so that light transmission.
In this fluorescent lamp, also the inwall at luminous tube 1 is formed with ultraviolet reflection body 4, and face is formed with glassy layer 5 and luminescent coating 6 within it.The startup additional conductive member that illustrated in Fig. 1 is omitted.
Fluorescent lamp shown in Figure 4 is that 2 electrodes all are present in the type in the luminous tube 1.With fluorescent lamp shown in Figure 1 in the same manner, be formed with ultraviolet reflection body 4, glassy layer 5, luminescent coating 6 successively at the inner face of luminous tube 1.Luminous tube 1 is made of quartz glass, in single portion sealing plate 11 is installed, and runs through sealing plate 11 and filament electrode 2 is installed.This fluorescent lamp is usually to enclose in luminous tube that to have be rare gas, and the lamp that carries out the low-pressure mercury discharge of mercury of principal component with Ar as buffer gas.
Fluorescent lamp manufacturing method shown in Figure 1 then is described.Fig. 4 is the flow chart of the manufacturing step of expression fluorescent lamp shown in Figure 1.
Make suspension-turbid liquid by the sol gel solution that contains silicon oxide particle and aluminium oxide particles,, can make the ultraviolet reflection body by flowing through this solution with the inner surface of material at luminous tube.The thickness of ultraviolet reflection body can be controlled by number of times or suspension-turbid liquid flowing velocity that control is flowed down.Behind formation ultraviolet reflection body, carry out burning till in the atmosphere under 500～1000 ℃, and make the ultraviolet reflection body affixed.
At first, with the fine pulverizing of block glass and put into ball mill and process.Glass powder is after crushed classified particle diameter by screen cloth, and for example extracting out, average grain diameter is the glass powder of 0.5～10 μ m (being preferably 1～5 μ m).This glass powder is mixed with 1: 4～1: 10 ratio of weight ratio with for example nitrocellulose (nitrocellulose), butyl acetate liquid, this mixed liquor is fully ground by ball mill together with alumina balls generate slurry (slurry).The slurry that below will be dispersed with this glass powder is called " glass slurry ".Then, this glass slurry is coated on the inner surface of luminous tube with material.The luminous tube material is the pipe that is formed with 2 blast pipes in a square end portion.With its vertical maintenance, in the vessel level that is full of above-mentioned glass slurry, putting into wherein, side's blast pipe aspirates slurry.The glass slurry that is sucked is filled in the inside of luminous tube with material, but also can be coated on inner surface by being extracted out by the opposing party's blast pipe.Wherein, by viscosity or the coating number of times of adjusting the glass slurry, can adjust the thickness of the glassy layer of final acquisition.The thickness of glass slurry is preferably formed in the scope of 1～30 μ m.Wherein, in order to obtain high permeability, as far as possible little in the scope of the luminescent coating that the thickness of glassy layer preferably forms in can keeping the back operation at predetermined ultraviolet light.This is in order to terminate in Min. in the ultraviolet radiation absorption of glassy layer.
Then, make the glass paste soma dry.
Use is installed in luminous tube and makes the drying nitrogen circulation with 2 blast pipes of material, makes the contained butyl acetate evaporation that has of glass slurry thus.As a result, form with the inner surface of material at luminous tube and pile up that thickness is arranged is the layer (glassy layer) of the glass powder of 1～30 μ m.Wherein, be used in dry gas and also can be dry air.Then, glassy layer is burnt till.Particularly, by glass tube is heated glass powder is burnt till, but firing condition is in atmosphere, about 500～1000 ℃ with the time, when representing with the retention time under the maximum temperature, is 0.2～1 hour.When using above-mentioned pyrex powder or aluminum silicate glass powder, preferably under 600～900 ℃, carry out.Then, by firing process as implied above particle is combined each other and welding on glass tube, glassy layer can brute force be combined on the base material.In addition, if the glassy layer pulverulence also has the function as the ultraviolet reflector that takes place on fluorophor.Wherein, therefore glassy layer keeps pulverous form usually owing to can not be warming up to melt temperature, but also can be further to improve temperature and the state that makes its fusion.
The coating process of fluorophor is identical with step 2, luminous tube is formed material vertically to be kept, insert a wherein side of blast pipe in the vessel level that is full of the fluorophor slurry, aspirate by side's blast pipe wherein, will be on the fluorophor slurry inhale and at pipe inner filling fluorophor slurry, afterwards, extract out and be coated with by the opposing party's blast pipe.Then, make the phosphor slurry soma dry.Flow through drying nitrogen with wherein side's blast pipe A of material towards the opposing party's blast pipe by luminous tube, make the contained butyl acetate evaporation that has of fluorophor slurry thus.Be used for dry gas and also can be dry air.And then be the operation of burning till fluorophor.Luminous tube is put into stove with material and burn till.Firing condition is about 500～800 ℃ in atmospheric environment, with the retention time under the maximum temperature, heated 0.2～1 hour.In this firing process, softening and fluorophor is knotted at glassy layer on the extremely surface of the boundary face generation glass of luminescent coating and glassy layer, the result obtains strong bonding state.As a result, obtain to constitute with on the inner surface of material at the luminous tube that is made of quartz glass, lamination has the glassy layer that is made of the low softening point glass powder, the state of luminescent coating successively.Wherein, under the situation of fluorophor that is the deterioration fierceness in atmosphere,,, can proceed to the heating about about 800 degree by forming nonoxidizing atmosphere or reducing atmosphere being warming up to nitrocellulose burns the temperature of melting in atmosphere after.
In manufacturing process as implied above, enumerate concrete numerical example at fluorescent lamp.
The total length of luminous tube is selected by the scope of 300～2000mm, for example is 1500mm, and the wall thickness of luminous tube is 1～4mm, for example is 2mm.In addition, the average thickness of luminescent coating is selected by the scope of 10～20 μ m, for example is 15 μ m, and the thickness that is formed on the glassy layer that is made of low softening point glass between luminescent coating and the luminous tube is selected by the scope of 1～30 μ m, for example is 10 μ m.
The then experiment of explanation expression effect of the present invention.
The lamp that will be same modality with fluorescent lamp shown in Figure 3 is made as lamp 1, does not exist the lamp of ultraviolet reflection body 4 to be made as lamp 2 by fluorescent lamp shown in Figure 3, measures the relative illumination in the exit facet.Relative illumination uses the relative value with respect to the illumination that compares lamp.
Represent the relative illumination value at Fig. 6, represent luminescent spectrum at Fig. 7.
According to experimental result, the lamp 1 that uses the ultraviolet reflection body is with respect to comparing lamp, and in wavelength 300～340nm, the relative illumination value is " 4.4 ", and in wavelength 340～400nm, the relative illumination value is " 3.8 ".In addition, the lamp 2 that only is provided with luminescent coating is with respect to comparing lamp, and in wavelength 300～340nm, the relative illumination value is " 3.1 ", and in wavelength 340～400nm, the relative illumination value is " 2.6 ".
In addition, luminescent spectrum shown in Figure 7 represents that at the longitudinal axis with the illumination among the wavelength 340nm that compares lamp be the relative value of benchmark.Be provided with the lamp 1 of ultraviolet reflection body or only have the lamp 2 of luminescent coating all to have peak value near wavelength 340nm, compare with the illumination of lamp 2 as can be known, the illumination of lamp 1 is very high.
More than the pair of electrodes of Shuo Ming fluorescent lamp all is positioned at the outside of discharge space, but is not to be defined in example as implied above, and it is also applicable that for example at least one side's electrode is configured in inner lamp.In addition, when configured electrodes in discharge space, then installing electrodes gets final product before sealing process.
As shown above, fluorescent lamp of the present invention is formed with the glassy layer that is made of the softening point material lower than the softening point of quartz glass between quartz glass system luminous tube and luminescent coating, therefore only make its heating, can make fluorophor attached to glassy layer with the softening temperature of glassy layer.In addition, glassy layer and quartz glass also can be affixed in addition at the softening temperature of glassy layer.In addition, owing between glassy layer and luminous tube, have the ultraviolet reflection body, therefore, can obtain high emission efficiency by making ultraviolet ray in the specific direction reflection.
Claims (3)
1. a fluorescent lamp is the fluorescent lamp with ultra violet radiation type of quartz glass system luminous tube, it is characterized by, and has:
In the rear side of the rayed direction of above-mentioned luminous tube, be formed on the glassy layer that constitutes by the softening point material lower of discharge space side surface than quartz glass; Be formed on the luminescent coating on surface of the discharge space side of this glassy layer; And be formed on ultraviolet reflection body between glassy layer and the luminous tube.
2. fluorescent lamp according to claim 1 is characterized in that above-mentioned reflector is made of the film that contains silicon oxide particle and aluminium oxide particles.
3. fluorescent lamp according to claim 1 is characterized in that, above-mentioned glassy layer comprises any of pyrex powder or aluminum silicate glass powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101574147A CN102214545A (en) | 2010-04-01 | 2010-04-01 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101574147A CN102214545A (en) | 2010-04-01 | 2010-04-01 | Fluorescent lamp |
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| CN102214545A true CN102214545A (en) | 2011-10-12 |
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| CN2010101574147A Pending CN102214545A (en) | 2010-04-01 | 2010-04-01 | Fluorescent lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137422A (en) * | 2011-11-22 | 2013-06-05 | 优志旺电机株式会社 | Rare gas fluorescent lamp |
| CN112245139A (en) * | 2020-10-20 | 2021-01-22 | 赵存飞 | Nursing device for child's internal medicine that security performance is high |
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| JPH07192690A (en) * | 1993-12-24 | 1995-07-28 | Ushio Inc | Fluorescent tube and manufacturing method thereof |
| CN1326216A (en) * | 2000-05-29 | 2001-12-12 | 葛世潮 | Cold-cathode gas discharge device without metallic electrode |
| CN101189703A (en) * | 2005-05-31 | 2008-05-28 | 松下电器产业株式会社 | Fluorescent lamp and process for producing the same, and illuminator |
| TW201009883A (en) * | 2008-08-29 | 2010-03-01 | Ushio Electric Inc | Fluorescent lamp |
| CN101661866A (en) * | 2008-08-29 | 2010-03-03 | 优志旺电机株式会社 | Excimer lamp |
| CN102034676A (en) * | 2009-09-24 | 2011-04-27 | 优志旺电机株式会社 | Fluorescent lamp |
| CN102169801A (en) * | 2010-02-24 | 2011-08-31 | 优志旺电机株式会社 | Fluorescent lamp |
| CN102201322A (en) * | 2010-03-25 | 2011-09-28 | 优志旺电机株式会社 | Fluorescent lamp |
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2010
- 2010-04-01 CN CN2010101574147A patent/CN102214545A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07192690A (en) * | 1993-12-24 | 1995-07-28 | Ushio Inc | Fluorescent tube and manufacturing method thereof |
| CN1326216A (en) * | 2000-05-29 | 2001-12-12 | 葛世潮 | Cold-cathode gas discharge device without metallic electrode |
| CN101189703A (en) * | 2005-05-31 | 2008-05-28 | 松下电器产业株式会社 | Fluorescent lamp and process for producing the same, and illuminator |
| TW201009883A (en) * | 2008-08-29 | 2010-03-01 | Ushio Electric Inc | Fluorescent lamp |
| CN101661866A (en) * | 2008-08-29 | 2010-03-03 | 优志旺电机株式会社 | Excimer lamp |
| CN102034676A (en) * | 2009-09-24 | 2011-04-27 | 优志旺电机株式会社 | Fluorescent lamp |
| CN102169801A (en) * | 2010-02-24 | 2011-08-31 | 优志旺电机株式会社 | Fluorescent lamp |
| CN102201322A (en) * | 2010-03-25 | 2011-09-28 | 优志旺电机株式会社 | Fluorescent lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137422A (en) * | 2011-11-22 | 2013-06-05 | 优志旺电机株式会社 | Rare gas fluorescent lamp |
| CN112245139A (en) * | 2020-10-20 | 2021-01-22 | 赵存飞 | Nursing device for child's internal medicine that security performance is high |
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Application publication date: 20111012 |