CN102201322B - Fluorescent lamp - Google Patents
Fluorescent lamp Download PDFInfo
- Publication number
- CN102201322B CN102201322B CN201110079858.8A CN201110079858A CN102201322B CN 102201322 B CN102201322 B CN 102201322B CN 201110079858 A CN201110079858 A CN 201110079858A CN 102201322 B CN102201322 B CN 102201322B
- Authority
- CN
- China
- Prior art keywords
- reflecting layer
- ultraviolet
- layer
- luminous tube
- ultraviolet reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2261/00—Gas- or vapour-discharge lamps
- H01J2261/02—Details
- H01J2261/38—Devices for influencing the colour or wavelength of the light
- H01J2261/385—Non-chemical aspects of luminescent layers, e.g. thickness profile, shape and distribution of luminescent coatings
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The invention provides a fluorescent lamp, which is provided with a light-emitting tube made from quartz glass and emits ultraviolet rays, even if temperature difference between the internal and the external of the lamp is great, a fluorophor layer is not stripped. An ultraviolet reflective layer with silica particles as the main component is formed on a region of the internal surface of the light-emitting tube apart from a light taking-out zone, a glass layer formed by a substance with the softening point lower than that of the quartz glass is formed at the internal side of the ultraviolet reflective layer and the circumference of the light-emitting tube, a fluorophor layer is formed at the internal side of the glass layer, and the thickness of the ultraviolet reflective layer is 30-500 micrometers.
Description
Technical field
The present invention relates to a kind of fluorescent lamp, especially relate to the ultraviolet fluorescent lamp of radiation.
Background technology
In the manufacturing process of the middle liquid crystal panels used such as large-scale tv machine, a kind of ultraviolet light source radiated centered by wavelength 300nm ~ 400nm of demand, a kind of as it, the fluorescent lamp of ultra violet radiation type is noticeable.
But, in the luminous tube of the fluorescent lamp of existing ultra violet radiation type, usually use the so-called hard glasss such as soda-lime glass, Pyrex, aluminosilicate glass, but due to described hard glass absorption ultraviolet, therefore not preferred in the lamp of ultra violet radiation type.
Therefore, in patent documentation 1,2 etc., such as propose the fluorescent lamp using quartz glass as luminous tube.This is because the ultraviolet light of quartz glass good through characteristic, can take out light expeditiously.
But, in the manufacturing process of fluorescent lamp, the glass material of formation luminous tube must be made to be warmed up near softening point, and to adhere to fluorophor in this condition.Softening point temperature due to quartz glass is the high temperature near 1600 DEG C, therefore under this kind of high temperature by quartz glass heating and adhere to fluorophor time, exist fluorophor itself due to this high temperature the problem of deterioration.
On the other hand, although consider situation luminous tube being heated to the not deteriorated temperature of fluorophor such as less than 900 DEG C, in this case, quartz glass is fully not softening, and fluorophor dies down to the attachment of quartz glass, thus there is the problem that the fluorophor when lamp is lighted peels off.
In addition, namely allow to quartz glass and fluorophor adheres to well, light at lamp, when extinguishing, if the temperature difference in the outer surface of this lamp and discharge space is large, then fluorophor can be peeled off equally, result there is the unfavorable condition that radiation light quantity declines.Especially in the fluorescent lamp used in the manufacturing process of liquid crystal panel, cool by force to suppress the temperature of liquid crystal panel to rise, the temperature difference therefore inside and outside lamp is large, and the unfavorable condition that above-mentioned fluorophor is peeled off is more serious.
Patent documentation 1: Japanese Unexamined Patent Application Publication 2008-503046 publication
Patent documentation 2: Japanese Unexamined Patent Application Publication 2007-534128 publication
Summary of the invention
The problem that the present invention will solve is, a kind of fluorescent lamp being formed with the ultraviolet reflection type of luminescent coating in the luminous tube of quartz glass is provided, luminescent coating can be made to be attached to luminous tube inner surface securely, even and if temperature difference inside and outside lamp is large, this luminescent coating is also not easy to peel off.
In order to solve above-mentioned problem, a kind of fluorescent lamp of the present invention, it is characterized in that, luminous tube inner surface and region except light exit area is formed with silicon dioxide granule is the ultraviolet reflecting layer of main component, the glassy layer be made up of the material that softening point is lower than the softening point of quartz glass is formed in the inner side of this ultraviolet reflecting layer and at the complete cycle of this luminous tube, be formed with luminescent coating in the inner side of this glassy layer, the thickness of described ultraviolet reflecting layer is 30 ~ 500 μm.
According to fluorescent lamp of the present invention, because the inner side at ultraviolet reflecting layer is provided with glassy layer, therefore between luminescent coating, be folded with the glassy layer that softening point is lower than the softening point of quartz glass, by making the surface of the particle of this glassy layer is raised to softening temperature, fluorophor can be made to be attached to glassy layer securely.
In addition, by making this glassy layer soften, it can be made to be firmly fixed at Quartz glass surfaces.
And, it is 30 ~ 500 μm by making the thickness of the ultraviolet reflecting layer taking silicon dioxide granule as main component, this ultraviolet reflecting layer can be made to have heat insulation function, even if cool down lamp is outside and poor with formation temperature in luminous tube, also can make the luminescent coating of luminous tube inner surface that large variations in temperature does not occur, therefore this luminescent coating can not be peeled off.
Accompanying drawing explanation
Fig. 1 is the axial cutaway view of fluorescent lamp of the present invention.
Fig. 2 is the A-A transverse sectional view of Fig. 1.
Fig. 3 is the peel test result of the luminescent coating represented based on ultraviolet reflection layer thickness.
Embodiment
Fig. 1 is axial cutaway view of the present invention, and Fig. 2 is its A-A transverse sectional view.
In FIG, fluorophor 1 has the overall luminous tube 2 be made up of quartz glass for flat pattern.The size of this luminous tube 2 is such as 14mm × 42mm × 650mm, and thickness is 2mm.
The upper outer lower face surface of described luminous tube 2 is provided with relative pair of external electrodes 3,3.
The inner surface of the luminous tube 2 except take out the light exit area 2a of ultraviolet light from luminous tube 2 except is provided with ultraviolet reflecting layer 4.In other words, except a part of region vertically of the inner surface of luminous tube 2, be formed with ultraviolet reflecting layer 4, the region not forming this ultraviolet reflecting layer 4 forms light exit area 2a.
Further, in the inner side of described ultraviolet reflecting layer 4, comprise described smooth exit area 2a, be formed with the glassy layer 5 be made up of the material lower than the softening point of quartz glass at the inner surface complete cycle of luminous tube 2.
In addition, luminescent coating 6 is formed with in the inner side of this glassy layer 5.
At this, the glass of the softening point lower than the softening point (1600 DEG C) of the quartz glass forming glassy layer 5 refers to the glass such as comprising Pyrex, aluminosilicate glass, barium silex glass etc.
In addition, the fluorophor forming fluorescence coating 6 such as uses europium to activate strontium borate (Sr-B-O:Eu), cerium activation lanthanum-magnesium aluminate (La-Mg-A1:Ce (being called LAM)), gadolinium, praseodymium activation lanthanum orthophosphate (La-P-O:Gd, Pr) etc.Described fluorophor all absorbing wavelength is less than the ultraviolet light in the region of 250nm and is transformed into the ultraviolet of the wavelength band of 300 ~ 400nm.
Further, ultraviolet reflecting layer 4 is with silicon dioxide granule (Si0
2) be main component, because this silicon dioxide granule is identical, therefore favourable in cementability (adhesive strength) with the material forming luminous tube 2.
Further, the particle size range of silicon dioxide granule is such as 0.1 ~ 2 μm, and medium particle diameter (peak value of number average particle diameter) is 0.3 μm.
Select this particle diameter and medium particle diameter to effectively obtain ultraviolet reflection, particle diameter is preferably selected from the scope of 0.01 ~ 10 μm, and medium particle diameter is preferably selected from the scope of 0.1 ~ 3 μm.
In addition, be sealed with in luminous tube 2 such as 53kPa xenon as luminous gas.Further, arrange at the outer surface of this luminous tube 2 electrode 3,3 be made up of cancellate metal, its size is such as 32 × 500mm.
For the fluorescent lamp 1 formed as mentioned above, make the lamp changing the thickness of ultraviolet reflecting layer 4 respectively, examine whether the stripping that there is luminescent coating 6.
Glassy layer: thickness 10 μm
The thickness of luminescent coating: 15 μm
Experimental technique is described.To make light exit portion 2a mode down (in order to irradiate in the same manner as the irradiation unit of reality) down, fluorescent lamp 1 is set, at cooling water pipe internal flow 5m in the inside of not shown cooling water pipe (quartz glass tube of external diameter 85mm, thickness 3mm)
3the air of/min and air cooling is carried out to lamp.After repeatedly carrying out making lamp to light then extinguishing for 15 minutes the action 100 times of 5 minutes, be confirmed whether to there is the luminescent coating 6 peeled off and drop to light exit portion.In addition, lamp is input as 350W.
Fig. 3 represents experimental result.
×: the stripping that there is luminescent coating on lamp axial integral
△: the stripping of depositing degree no problem in practical
Zero: the stripping not having luminescent coating completely
According to this experimental result, confirm by making the thickness of ultraviolet reflecting layer 4 be more than 30 μm and can the peeling off of Fluorophotometry body layer 6.
The supposition as described below of this effect.Silicon dioxide granule is piled up formation as main component by ultraviolet reflecting layer 4, and therefore its inside has multiple space.By the heat-blocking action in this space, this ultraviolet reflecting layer 4 has heat-insulating property.Namely, by ultraviolet reflecting layer 4 is arranged to more than predetermined thickness, even if cool by force lamp, due to this heat insulation effect, also can not be cooled to glassy layer 5 and luminescent coating 6, the temperature difference with the condition of high temperature of lamp inside can not be produced, and, temperature sharply when lamp also can be suppressed to extinguish declines, thus the stripping of described glassy layer 5 can not occur, and therefore the stripping of luminescent coating 6 also can not occur.
In addition, by increasing the thickness of ultraviolet reflecting layer 4, heat insulation effect can be improved.Although ultraviolet reflecting layer 4 can be formed as the thickness about hundreds of μm, in order to ultraviolet reflecting layer 4 itself is not peeled off, preferably less than 500 μm.Above as a result, the thickness of ultraviolet reflecting layer 4 is 30 ~ 500 μm, preferably 60 ~ 500 μm, now can prevent luminescent coating from peeling off well.
As described above, it take silicon dioxide granule as the ultraviolet reflecting layer of main component that fluorescent lamp of the present invention is formed at the inner surface of described luminous tube, complete cycle in the inner side of this ultraviolet reflecting layer forms the glassy layer be made up of the material lower than the softening point of quartz glass, luminescent coating is formed in the inner side of this glassy layer, thus luminescent coating is attached to luminous tube securely, and be 30 ~ 500 μm by making the thickness of described ultraviolet reflecting layer, this ultraviolet reflecting layer is made to have heat insulation function, even if thus the effect that the temperature difference played inside and outside lamp greatly also can not make luminescent coating peel off from luminous tube.
Claims (1)
1. a fluorescent lamp, has the luminous tube of quartz glass, and this fluorescent lamp radiation ultraviolet, is characterized in that,
Described luminous tube inner surface and region except light exit area is formed with silicon dioxide granule is the ultraviolet reflecting layer of main component, be formed with in the whole face of inner surface of the described luminous tube comprising the part not forming this ultraviolet reflecting layer the glassy layer be made up of the material that softening point is lower than the softening point of quartz glass in the inner side of this ultraviolet reflecting layer, the ultraviolet luminescent coating that radiation wavelength is 300nm ~ 400nm is formed in the inner side of this glassy layer
Described ultraviolet reflecting layer contains particle diameter and is 0.01 ~ 10 μm and medium particle diameter is the silicon dioxide granule of 0.1 ~ 3 μm, and the thickness of described ultraviolet reflecting layer is 30 ~ 500 μm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010069080A JP2011204408A (en) | 2010-03-25 | 2010-03-25 | Fluorescent lamp |
| JP2010-069080 | 2010-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102201322A CN102201322A (en) | 2011-09-28 |
| CN102201322B true CN102201322B (en) | 2014-12-17 |
Family
ID=44661911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110079858.8A Expired - Fee Related CN102201322B (en) | 2010-03-25 | 2011-03-25 | Fluorescent lamp |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2011204408A (en) |
| KR (1) | KR20110107733A (en) |
| CN (1) | CN102201322B (en) |
| TW (1) | TWI553698B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214545A (en) * | 2010-04-01 | 2011-10-12 | 优志旺电机株式会社 | Fluorescent lamp |
| JP5397455B2 (en) * | 2011-11-22 | 2014-01-22 | ウシオ電機株式会社 | Noble gas fluorescent lamp |
| CN104201089A (en) * | 2014-09-08 | 2014-12-10 | 朱红斌 | Energy-saving fluorescent lamp capable of internal reflection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661866A (en) * | 2008-08-29 | 2010-03-03 | 优志旺电机株式会社 | Excimer lamp |
| JP2010056007A (en) * | 2008-08-29 | 2010-03-11 | Ushio Inc | Fluorescent lamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0845476A (en) * | 1994-05-25 | 1996-02-16 | Toshiba Lighting & Technol Corp | Fluorescent lamp and color fixing device using it |
| JP2007173090A (en) * | 2005-12-22 | 2007-07-05 | Ushio Inc | Ultraviolet light source system |
| DE102007026029B4 (en) * | 2007-06-04 | 2017-01-26 | Schott Ag | Mixture containing fluorescent dye and adhesive for the fluorescent dye, method of preparation and use |
| JP5528683B2 (en) * | 2008-06-06 | 2014-06-25 | ウシオ電機株式会社 | Excimer lamp |
| JP5163520B2 (en) * | 2009-01-29 | 2013-03-13 | ウシオ電機株式会社 | Fluorescent lamp and method of manufacturing the fluorescent lamp |
-
2010
- 2010-03-25 JP JP2010069080A patent/JP2011204408A/en active Pending
-
2011
- 2011-01-12 TW TW100101044A patent/TWI553698B/en not_active IP Right Cessation
- 2011-02-16 KR KR1020110013745A patent/KR20110107733A/en active Search and Examination
- 2011-03-25 CN CN201110079858.8A patent/CN102201322B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661866A (en) * | 2008-08-29 | 2010-03-03 | 优志旺电机株式会社 | Excimer lamp |
| JP2010056007A (en) * | 2008-08-29 | 2010-03-11 | Ushio Inc | Fluorescent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201140645A (en) | 2011-11-16 |
| JP2011204408A (en) | 2011-10-13 |
| CN102201322A (en) | 2011-09-28 |
| TWI553698B (en) | 2016-10-11 |
| KR20110107733A (en) | 2011-10-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20210325 |