CN101887838A - high pressure discharge lamp - Google Patents
high pressure discharge lamp Download PDFInfo
- Publication number
- CN101887838A CN101887838A CN 201010180625 CN201010180625A CN101887838A CN 101887838 A CN101887838 A CN 101887838A CN 201010180625 CN201010180625 CN 201010180625 CN 201010180625 A CN201010180625 A CN 201010180625A CN 101887838 A CN101887838 A CN 101887838A
- Authority
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- China
- Prior art keywords
- sealing
- discharge lamp
- pressure discharge
- alumina
- refractory metal
- 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.)
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Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 215
- 238000007789 sealing Methods 0.000 claims abstract description 144
- 239000000919 ceramic Substances 0.000 claims abstract description 101
- 239000004020 conductor Substances 0.000 claims abstract description 51
- 239000003966 growth inhibitor Substances 0.000 claims abstract description 31
- 150000004820 halides Chemical class 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000003870 refractory metal Substances 0.000 claims description 62
- 238000005245 sintering Methods 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 230000004927 fusion Effects 0.000 claims description 33
- 239000013078 crystal Substances 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 239000010937 tungsten Substances 0.000 claims description 8
- 239000010955 niobium Substances 0.000 claims description 7
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 claims description 2
- 241000968352 Scandia <hydrozoan> Species 0.000 claims 1
- 239000011888 foil Substances 0.000 claims 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- HJGMWXTVGKLUAQ-UHFFFAOYSA-N oxygen(2-);scandium(3+) Chemical compound [O-2].[O-2].[O-2].[Sc+3].[Sc+3] HJGMWXTVGKLUAQ-UHFFFAOYSA-N 0.000 claims 1
- 230000008676 import Effects 0.000 description 35
- 238000010438 heat treatment Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 21
- 230000015572 biosynthetic process Effects 0.000 description 20
- 238000005755 formation reaction Methods 0.000 description 20
- 239000000203 mixture Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 239000011195 cermet Substances 0.000 description 8
- 230000005764 inhibitory process Effects 0.000 description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 7
- 229910052753 mercury Inorganic materials 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 238000011835 investigation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910001507 metal halide Inorganic materials 0.000 description 5
- 150000005309 metal halides Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000000635 electron micrograph Methods 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910001370 Se alloy Inorganic materials 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000009422 growth inhibiting effect Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- -1 halid halogen Chemical class 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- KVXHGSVIPDOLBC-UHFFFAOYSA-N selanylidenetungsten Chemical compound [Se].[W] KVXHGSVIPDOLBC-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- WLTSUBTXQJEURO-UHFFFAOYSA-N thorium tungsten Chemical compound [W].[Th] WLTSUBTXQJEURO-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
本发明是有关于一种高压放电灯，其包括透光性陶瓷气密容器(1)，该透光性陶瓷气密容器(1)具备透光性陶瓷的包围部(1a)以及至少密封部(SP)由多晶氧化铝陶瓷构成的小径筒部(1b)。具备密封部分(2a)以及耐卤化物部分(2b)且插入小径筒部(1b)的内部的电流导入导体(2)通过熔融的密封部(SP)的多晶氧化铝陶瓷而熔接。在该熔融的多晶氧化铝陶瓷中，在内部包含氧化铝晶粒生长抑制剂，以抑制晶粒的生长。高压放电灯更具备连接于耐卤化物部分(2b)的前端的电极(3)以及被封入透光性陶瓷气密容器(1)内的放电介质。
The present invention relates to a high-pressure discharge lamp, comprising a translucent ceramic airtight container (1), the translucent ceramic airtight container (1) having a translucent ceramic enclosing portion (1a) and at least a sealing portion (SP) A small-diameter cylindrical portion (1b) made of polycrystalline alumina ceramics. A current lead-in conductor (2) having a sealing portion (2a) and a halide-resistant portion (2b) and inserted into the small-diameter cylindrical portion (1b) is welded by melting polycrystalline alumina ceramics of the sealing portion (SP). In this fused polycrystalline alumina ceramic, an alumina grain growth inhibitor is contained inside to suppress the growth of grains. The high-pressure discharge lamp further includes an electrode (3) connected to the front end of the halide-resistant portion (2b) and a discharge medium sealed in a light-transmitting ceramic airtight container (1).
Description
Technical field
The present invention relates to a kind of high-pressure discharge lamp, particularly relate to a kind of high-pressure discharge lamp (lamp) that possesses light transparent ceramic (ceramics) gas-tight container.
Background technology
In the high-pressure discharge lamp that possesses the light transparent ceramic discharge vessel, what be widely known by the people dawn is that welding by pottery does not have sintering (fritless) sealing with the what is called that the peristome of this discharge vessel is sealed, and for example discloses to some extent in the open application case of Japan Patent P2007-115651 number (Japanese Laid OpenPatent Application No.P 2007-115651).
And, in no sintering sealing, make the light transparent ceramic discharge vessel path tube portion, forms by the polycrystal alumina (alumina) below 50 μ m pottery near the average crystallite particle diameter of the inner surface of the positions of sealing reservations, with crack (crack) generation that takes place in the pottery that reduces sealing.About this technology, for example in the open application case P2009-009921 (Japanese LaidOpen Patent Application No.P 2009-009921) of Japan Patent, disclose to some extent.
The sealing of no sintering can solve the use of following sintered glass (frit glass) and the variety of issue that produces, and therefore is otherwise effective technique very.But described no sintering sealing still fails fully to solve the problem that incident crack produces in the pottery of sealing.
Analysis according to present inventors is known: the crack that produces in the pottery of sealing, mainly be because electric current import conductor hermetic unit and and the pottery of sealing part welding between the difference of thermal expansion cause.Especially in the process of no sintering sealing, the growth and become big easily of the crystal grain of the pottery of sealing, can be observed thus electric current import conductor and and the pottery of this conductor welding between the tendency that enlarges of the missionary society of thermal expansion.Therefore, in the technology that the open application case P2009-009921 of Japan Patent is disclosed, by in the path tube portion of light transparent ceramic discharge vessel, using the less polycrystalline alumina ceramic of average grain diameter, make path tube portion and electric current importing conductor thermal coefficient of expansion separately approaching as far as possible.But present inventors find out: during slow cooling, the crystal grain of pottery can be grown making ceramic welding, and crystal grain is bigger when becoming than raw material easily.
This shows that above-mentioned existing high-pressure discharge lamp obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel high-pressure discharge lamp, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, overcome the defective that existing high-pressure discharge lamp exists, and provide a kind of novel high-pressure discharge lamp, technical problem to be solved is to make in its sealing that forms making polycrystalline alumina ceramic be fused to electric current importing conductor, reduce the growth of ceramic crystalline grain and suppress the crack generation, be very suitable for practicality.
In order to solve above-mentioned problem, high-pressure discharge lamp of the present invention is characterised in that and comprises: light transparent ceramic gas-tight container (1), possess encirclement portion (1a) and path tube portion (1b), wherein said encirclement portion (1a) is made of light transparent ceramic, and be formed with discharge space in inside, described path tube portion (1b) is communicated in the end of encirclement portion (1a) and forms, and sealing (SP) is made of polycrystalline alumina ceramic at least; Electric current imports conductor (2), by the hermetic unit (2a) and anti-halide part (2b) formation that are connected in length direction respectively with an end, and the other end with described anti-halide part (2b) extends along described encirclement portion (1a), and the other end of described hermetic unit (2a) exposes the mode to the outside, and inserts the inside of the path tube portion (1b) of described light transparent ceramic gas-tight container (1); Electrode (3) is provided in the other end that described electric current imports the described anti-halide part (2b) of conductor (2); And discharge medium, be enclosed in the inside of described light transparent ceramic gas-tight container (1), and, fusing department (4) after the described polycrystalline alumina ceramic fusion of the sealing (SP) of described path tube portion (1b) and the curing is fused to the hermetic unit that described electric current imports conductor (2), and comprises the alumina grain growth inhibitor in inside.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, high-pressure discharge lamp of the present invention has following advantage and beneficial effect at least:
1, high-pressure discharge lamp of the present invention, by use diffuse to the refractory metal of fusing department inside and be present in sintering aid composition on alumina crystal grain circle of fusing department at least any, be used as the alumina grain growth inhibitor, thereby the crack that can easily suppress sealing produces.
2, the path tube portion of high-pressure discharge lamp of the present invention is covered by using any the formed refractory metal at least by dictyosome and paper tinsel, thereby can when the heating and melting of path tube portion refractory metal easily be spread to fusing department inside as the alumina grain growth inhibitor.
In sum, the invention relates to a kind of high-pressure discharge lamp, it comprises the light transparent ceramic gas-tight container, and this light transparent ceramic gas-tight container possesses the encirclement portion of light transparent ceramic and the path tube portion that is made of polycrystalline alumina ceramic of sealing at least.The electric current that possesses hermetic unit and anti-halide part and insert the inside of path tube portion imports conductor dbus and crosses the polycrystalline alumina ceramic of sealing of fusion and welding.In the polycrystalline alumina ceramic of this fusion, comprise the alumina grain growth inhibitor in inside, to suppress the growth of crystal grain.High-pressure discharge lamp more possesses the electrode of the front end that is connected in anti-halide part and is enclosed the interior discharge medium of light transparent ceramic gas-tight container.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the vertical section schematic diagram of the 1st embodiment of high-pressure discharge lamp of the present invention.
Fig. 2 is that the major part of the confined state of sealing before sealing of high-pressure discharge lamp shown in Figure 1 is amplified the vertical section schematic diagram.
Fig. 3 is that the major part of the sealing of high-pressure discharge lamp shown in Figure 1 is amplified vertical end view.
Fig. 4 is that the major part of sealing of the 2nd embodiment of high-pressure discharge lamp of the present invention is amplified the vertical section schematic diagram.
Fig. 5 and Fig. 6 are that the major part of sealing of the 3rd embodiment of high-pressure discharge lamp of the present invention is amplified the vertical section schematic diagram.
Fig. 7 (a) and (b), (c) are the electron micrographs in sealing vertical section of the 6th embodiment of high-pressure discharge lamp of the present invention.
1: the light transparent ceramic gas-tight container
1a: encirclement portion
1b: path tube portion
1c: discharge space
2: electric current imports conductor
2a: hermetic unit
2b: anti-halide part
3: electrode
4: fusing department
4a: weld portion
4b: be close to portion
4c: binding part
L: major diameter
MC: refractory metal lining
SP: sealing
V: space
W: minor axis
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of high-pressure discharge lamp, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.For convenience of description, in following embodiment, components identical is represented with identical numbering.
Below, the accompanying drawing with reference to identical or corresponding part mark there being same or analogous symbol comes the high-pressure discharge lamp of typical concrete example of the present invention is described.
In the present invention, the alumina grain growth inhibitor is in the process of the sealing reservations heating and melting of the path tube portion that makes no sintering sealing, can suppress the easy growth of alumina grain and become big composition, and this alumina grain growth inhibitor is comprised in the inside of formed fusing department.And, as the alumina grain growth inhibitor, use at least a of refractory metal and metal oxide.
Secondly, the refractory metal in the alumina grain growth inhibitor is described.Refractory metal diffuses to the inside of fusing department.And,, use from tantalum Ta, niobium Nb, molybdenum Mo and tungsten W and comprise select the group of at least a kind alloy of these metals at least a as refractory metal.
In order to make the inside that diffuses to fusing department as the refractory metal of alumina grain growth inhibitor, preferably on the outer surface of the sealing reservations of path tube portion, before heating, be pre-formed the refractory metal lining.Like this, can in the heating and melting process of sealing, make the refractory metal lining diffuse to the inside of fusing department.
By the outer surface configuration refractory metal lining in the sealing reservations of aluminium oxide ceramics, when the sealing reservations are heated, the refractory metal lining also will be heated.Its result, refractory metal is fusion or softening by heating, and the part of this refractory metal diffuses in the aluminium oxide ceramics of the fusion that seals reservations.Then, carry out cooling curing, form the sealing of light transparent ceramic gas-tight container by fusing department to aluminium oxide ceramics.In sealing, the refractory metal of diffusion mainly enters the interface of alumina grain, to play the effect of the growth that suppresses aluminium oxide particles.
Refractory metal lining by net (mesh) body and paper tinsel any forms at least.In addition, the arrangement method of dictyosome and paper tinsel is not particularly limited.For example, the first, as the method for using dictyosome, can enumerate: the dictyosome of refractory metal is tubular and reels or be lid (cap) shape in advance and form in the sealing reservations of path tube portion, again it is installed on the method for the end of path tube portion.And, the second, as the method for using paper tinsel, can enumerate: the refractory metal paper tinsel is tubular and is wound on method on the outer peripheral face of sealing reservations of path tube portion.
Secondly, the method that lining is heated to refractory metal is described.Above-mentioned the 1st method is the outside irradiating laser (laser) from dictyosome, with to sealing aluminium oxide ceramics of reservations and the method that dictyosome heats.Heating by this method, the laser energy that is shone (laser energy) is almost all through the hole of dictyosome and the polycrystalline alumina ceramic of path tube portion, and the electric current importing conductor that is connected the inside of path tube portion absorbs, and electric current imports conductor temperature rising at first.Then, the heat of electric current importing conductor conducts to aluminium oxide ceramics then.Meanwhile, the dictyosome surface also absorbs laser energy and the temperature rising, the softening or fusion of dictyosome.Thus, aluminium oxide ceramics is heated and fusion.Then, as mentioned above, the refractory metal composition diffuses in the aluminium oxide ceramics of fusion.
In the 2nd method, come end face direct irradiation laser to path tube portion from tilted direction.In these heating means, laser is mainly by the polycrystalline alumina ceramic of direct irradiation to the end face of path tube portion, so laser sees through this polycrystalline alumina ceramic, and laser energy is absorbed by electric current importing conductor.By this laser radiation, the temperature and first method that electric current imports conductor similarly rise.Then, electric current imports the heat conduction of conductor to aluminium oxide ceramics and refractory metal paper tinsel.Its result, the aluminium oxide ceramics of sealing reservations is heated and fusion.At this moment, the softening or fusion of refractory metal paper tinsel.Then, the refractory metal composition diffuses to the aluminium oxide ceramics from the refractory metal paper tinsel.In addition, when coming irradiating laser via the refractory metal paper tinsel, the time till the fusion of aluminium oxide ceramics is with elongated.
Secondly, the situation of using the sintering aid composition to be used as the alumina grain growth inhibitor is described.The sintering aid composition that plays a role as the alumina grain growth inhibitor is present on alumina crystal grain circle of sealing.In the present invention, make the sintering aid composition be present in the aluminium oxide Al of the fusing department of sealing
2O
3Grain boundary on method be not particularly limited.For example, if elder generation is at the surface adhesion sintering aid composition of path tube portion before sealing, subsequently path tube portion is heated and make it fusion, then the sintering aid composition will mix mutually with aluminium oxide ceramics and enter the interface of alumina grain, thereby suppress the growth of alumina grain.
As the sintering aid composition, for example use magnesium oxide MgO, yittrium oxide Y
2O
3, lanthana La
2O
3, scandium oxide ScO
3And silicon oxide sio
2Deng.
And, also can use the light transmission polycrystalline alumina ceramic that contains the sintering aid composition in advance, form the sealing reservations of path tube portion.In the method, when the fusion of aluminium oxide ceramics, also can make the sintering aid composition enter the interface of alumina grain.In addition, in the method, when making the aluminium oxide ceramics fusion, a part of sintering aid becomes branch's evaporation and disappears.Therefore, the sintering aid constituent concentration of fusing department will be lower than the concentration with the sintering aid composition of other parts of fusing department adjacency, hence one can see that, and in fusing department, contained sintering aid composition has played the function of alumina grain growth inhibitor in the light transmission polycrystalline alumina ceramic.
Subsequently, cool off by fusing department and to solidify, form the sealing of light transparent ceramic gas-tight container aluminium oxide ceramics.As a result, the sintering aid composition enters the interface of alumina grain, plays the effect of alumina grain growth inhibitor thus, and suppresses the crack generation of fusing department.
In the present invention, can make as the refractory metal of alumina grain growth inhibitor and sintering aid composition the two and be stored in the fusing department of sealing.Under the situation of present embodiment, the growth inhibiting effect of alumina grain is better than refractory metal and the sintering aid composition situation of individualism separately.Like this, the result that the growth of alumina grain is suppressed, the crack of sealing produces and is inhibited.
Secondly, the alumina crystal that the inhibition efficient melting portion that the crack to sealing produces be described is constructed.
That is, the alumina grain in the polycrystalline alumina ceramic fusion of sealing and the fusing department that is solidified to form subsequently is to carry out crystallization again by the aluminium oxide of temporary transient fusion in the forming process of sealing to form.Therefore, the size of alumina grain, shape according to the difference in place and and inhomogeneous.Measure for size, shape to this alumina grain, (scanning electron microscope SEM) comes section construction drawing picture to sealing for example to use scanning electron microscope.Come the instrumentation alumina grain according to the image that is obtained.When the greatest width dimension of the alumina grain of the image that this is determined is made as major diameter L, in the time of will being made as minor axis W with maximum size in the width dimensions of the direction of this major diameter quadrature, this minor axis W is equivalent to the alumina crystal particle diameter.By coming size, shape to alumina grain to manage like this, the crack that can suppress sealing produces.
In the present invention, more than 50% of the alumina grain of fusing department, preferred particle diameter more than 90% are in the scope of 3～200 μ m, and shape is in the major diameter of establishing alumina grain, and to be that L and the ratio L/W when establishing minor axis and being W satisfy in the scope of 1.0≤L/W≤20 comparatively desirable.As long as be in this scope, then formed fusing department will be difficult to produce the crack, and the formation sealing is easier to relatively.
When forming sealing when the sealing reservations heating and melting that makes path tube portion, the alumina grain of fusing department reaches more than the 3 μ m at least because of crystallization particle diameter again.On the other hand, if the particle diameter of alumina grain surpasses 200 μ m, then alumina grain can be excessive and fusing department becomes and is easy to generate the crack.
And about the shape of alumina grain, needing only than L/W is 1.0, and then the state of fusing department will become well, can fully obtain the inhibition effect that the crack produces.On the other hand, if surpass 20 than L/W, the crack will be very easy to produce, thus the extremely difficult high-pressure discharge lamp that obtains practicality.As long as be in the scope that satisfies above-mentioned condition, then will obtain inhibition effect to the crack generation of sealing.
In addition, the particle diameter of the alumina grain of fusing department is more than the 5 μ m and is in the scope that satisfies 1.0≤L/W≤10 then even more ideal.In this scope, the crack generation for sealing will obtain higher inhibition effect.
And the value S (MPa) of compression stress that imports the part of conductor with the electric current of the fusing department welding of sealing preferably sets in the scope of 100≤S≤800.In addition, so-called compression stress is meant negative Sealing Stress.The scope of sealing stress, expression form easily sealing and can obtain scope to the inhibition effect in the crack that produces in this fusing department.But, if the value of compression stress less than 100, the formation of the sealing difficulty that will become very then.And if the value of compression stress surpasses 800, then the crack produces and will become apparent.
And sealing must be in the inside of its fusing department, and the grain circle of the alumina grain of adjacency is close to mutually, and finally not forming the minim gap that leads to the fusing department outside is grain gap, circle.By above-mentioned formation, the known fusing department that can suppress effectively produces the crack.Wherein, formed space, the inside of fusing department (void) is not comprised in the above-mentioned gap.
The inner formed space of fusing department form sometimes can not be referred to as minim gap than large space.But, when as the sealing of no sintering as, make the ceramic fusion of path tube portion and when forming sealing, as long as the cost adequate time is carried out slow cooling, just can stop the formation in space, preferably the space is not present in the inside of the fusing department of sealing.
Secondly, other formations among the present invention are described.
1. about the Young's modulus (Young ' s modulus) of the fusing department of sealing
The Young's modulus Y of fusing department outer surface (GPa) preferably is in the scope that satisfies 100≤Y≤700.Thus, can obtain inhibition effect that the crack of sealing is produced.
2. about the hardness of the fusing department of sealing
The hardness H of fusing department outer surface (GPa) preferably is in the scope that satisfies 5≤H≤60.
Thus, can obtain inhibition effect that the crack of sealing is produced.
3. about the formation form of the fusing department of sealing
Fusing department preferably is made of the 1st zone and the 2nd zone, described the 1st zone be the sealing reservations of path tube portion spread all over path tube portion inner face till electric current imports surface of conductors roughly integral body and fusion is solidified subsequently and is formed; The part that described the 2nd zone is the aluminium oxide of fusion in the 1st zone enter the path tube portion that is adjacent to the 1st zone non-fusing department inner face and and its electric current in opposite directions import to solidify behind the gap between conductor and form.Thus, can obtain inhibition effect that the crack of sealing is produced.
Below, referring to figs. 1 through Fig. 3, the high-pressure discharge lamp of the 1st embodiment of the present invention is described.In the present embodiment, high-pressure discharge lamp possesses light transparent ceramic gas-tight container 1, electric current imports conductor 2, electrode 3, refractory metal lining MC, sealing SP and discharge medium.
(light transparent ceramic gas-tight container 1)
Light transparent ceramic gas-tight container 1 possesses 1a of encirclement portion and the path tube 1b of portion.Inside at the 1a of encirclement portion forms discharge space 1c.In addition, the light transmission of light transparent ceramic gas-tight container 1 is meant to possess the permeability that can make the light that is produced by discharge be seen through and export to outside degree, not only can be transparent, also can be light diffusing.And the major part of surrounding the part of discharge space at least is that light transmission gets final product, and generally speaking, the part beyond the above-mentioned major part may not also can for light transmission.
The inside of the 1a of encirclement portion is hollow, and its constituent material is formed by the polycrystalline alumina ceramic of light transmission.As this polycrystalline alumina ceramic material, use the metal oxide of monocrystalline, for example sapphire (sapphire), yttrium-aluminium-garnet (yttrium aluminum garnet, YAG), yittrium oxide (yttriumoxide, YOX), perhaps use the polycrystalline non-oxidized substance, for example the material of aluminium nitride (AlN) etc.These light transmission polycrystalline alumina ceramics are in the industrial volume production that realizes, and are easier to relatively buy, and are therefore comparatively suitable as the constituent material of light transparent ceramic gas-tight container 1 integral body.
The path tube 1b of portion forms the cylindrical body of path, is connected in the end of the 1a of encirclement portion and the inside that its inside is communicated in the 1a of encirclement portion airtightly, and extends to foreign side from the end of the 1a of encirclement portion.The path tube 1b of portion is preferably by being shaped integratedly with the continuous curved surface of the 1a of encirclement portion.
And among the path tube 1b of portion, the sealing reservations that are formed at wherein are made of the light transmission polycrystalline alumina ceramic at least.The crystallization average grain diameter of the general above-mentioned aluminium oxide ceramics that uses is about 70 μ m, but when enforcement of the present invention, generally will be at least near the position of the sealing reservations of the path tube 1b of portion, in other words, will in the sealing step, be set at below the 50 μ m by the average crystallite particle diameter in the place of fusion.In addition, the average crystallite particle diameter is the smaller the better, below for example preferred 30 μ m, more preferably below the 20 μ m.Therefore, comparatively ideal is the scope of 0.1～30 μ m, and better is the scope of 0.5～20 μ m.And then, by the average crystallite particle diameter with the sealing reservations of the path tube 1b of portion be made as below the 4 μ m, below the preferred 3 μ m, more preferably below the 1 μ m, thereby easier welding by aluminium oxide ceramics forms sealing.
And, the integral body of light transparent ceramic gas-tight container 1 by the formed situation of light transmission polycrystalline alumina ceramic under, make the crystallization average grain diameter of the 1a of encirclement portion relatively large, and the crystallization average grain diameter that makes the path tube 1b of portion is less relatively as mentioned above.
The quantity of the path tube 1b of portion is 2 what set pair of electrodes 3 generally speaking, but when a pair of path tube 1b of portion is disposed at position spaced respectively, and pair of electrodes 3 separates along tubular axis and in opposite directions.In addition, the pottery of the formation path tube 1b of portion also can be essentially light-proofness.
In the present embodiment, the path tube 1b of portion portion within it is formed with capillary (capillary) structure, but also can form this capillary structure.And then the length of the path tube 1b of portion is not particularly limited in the present embodiment.Generally speaking, so long as this path tube 1b of portion and electric current import conductor 2 and get final product by the length that direct or indirect ceramic welding forms sealing SP easily at least.Because sealing SP can tolerate relative higher temperatures, therefore the length of the above-mentioned path tube 1b of portion can show the length that is shorter than the path tube 1b of portion when using previous sintered glass to seal.
Secondly, when making light transparent ceramic gas- tight container 1,1a of encirclement portion and the path tube 1b of portion are shaped integratedly and form.But, also can come according to circumstances by a plurality of member of formation being engaged or chimeric formation.For example, also can carry out separately being engaged respectively after the presintering, and then integral body is carried out sintering, form the light transparent ceramic gas-tight container 1 of one thus 1a of encirclement portion and the path tube 1b of portion.
(importing conductor 2) about electric current
It is the bodies that are connected in series of hermetic unit 2a and anti-halide part 2b that electric current imports conductor 2.And it is the conductors that function as follows that electric current imports conductor 2, supports electrode 3 described later that is:, to electrode 3 supplying electric currents, and acts synergistically with the path tube 1b of portion and to seal light transparent ceramic gas-tight container 1.Therefore, electric current imports the inside that conductor 2 inserts the path tube 1b of portion of light transparent ceramic gas-tight container 1.One distolateral be anti-halide part 2b, connecting electrode 3 at its front end.And, on another distolateral hermetic unit 2a, forming the sealing SP described later of light transparent ceramic gas-tight container 1, the other end exposes to the outside from light transparent ceramic gas-tight container 1.In addition, in above-mentioned, exposing to the outside from light transparent ceramic gas-tight container 1, both can be to project to the outside from light transparent ceramic gas-tight container 1, and can not give prominence to but externally get final product in opposite directions with the degree that can power from the outside.
And electric current imports conductor 2 and can use sealing metal or cermet (ceramet) to constitute its hermetic unit 2a.As the sealing metal, from being the group of niobium (Nb), tantalum (Ta), titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V) and platinum (Pt), the thermal coefficient of expansion conductive metal close with the thermal coefficient of expansion of the polycrystalline alumina ceramic of the path tube 1b of portion that constitutes light transparent ceramic gas-tight container 1 select.And, as cermet, except above-mentioned metal, also can use the metal from the group of molybdenum (Mo) and tungsten (W), selected and the cermet of aluminium oxide ceramics.
And then, also a plurality of materials partly can be engaged and formed the hermetic unit 2a that electric current imports conductor 2.For example, can by a part that makes electric current import conductor 2 formed by the sealing metal of from above-mentioned group, selecting and with above-mentioned cermet along the tube axial direction tandem be engaged in constituting of this metal part or with cermet surround metal partly mode and formed by constituting of the multilayer of concentric circles.And, when the conductor 2 of at least a portion hermetic unit 2a that imports to(for) electric current is used cermet, if this cermet part or striding and the path tube 1b of portion that the two part of this cermet part and sealing metal part is carried out light transparent ceramic gas-tight container 1 and electric current importing conductor 2 between sealing, then because reason described later, when the fusion of the path tube 1b of portion by pottery seals, therefore the temperature of pottery forms good sealing easily with easier rising.
(about electrode 3)
Pair of electrodes 3 is to make the inside of light transparent ceramic gas-tight container 1 produce the mechanism of the discharge of discharge medium described later.Pair of electrodes 3 separates and configuration opposite to each other in the mode that produces electric arc (arc) discharge between this electrode.
And electrode 3 is connected in electric current and imports the anti-halide part 2b of conductor 2 and be supported on the assigned position in the light transparent ceramic gas-tight container 1.For example, an end of electrode 3 is connected in the part that electric current imports the private side that projects to light transparent ceramic gas-tight container 1 of conductor 2.
And then, electrode 3 is made of electrode principal part or electrode axial region.The electrode principal part is the part that becomes the starting point of discharge, is the part that plays a role mainly as negative electrode and/or anode therefore, can come not to be directly connected in via electrode axis portion electric current according to circumstances and import conductor 2.And heat radiation well can perhaps make diameter greater than the electrode axial region if necessary in the coil (coil) of coiling tungsten on the electrode principal part for the surface area that increases the electrode principal part.When electrode 3 possessed the electrode axial region, the electrode axial region was to form or weld with the electrode principal part, and was connected in the anti-halide part 2b that electric current imports conductor 2.In addition, can come according to circumstances to make electrode axial region and electric current import the anti-halide part 2b sharing of conductor 2 by single tungsten material.
And then the material of electrode 3 can use tungsten, doping (doped) tungsten, mix thorium tungsten, selenium or tungsten-selenium alloy etc.In addition, when using pair of electrodes, under the situation of formula is lit a lamp in interchange, this a pair of electrode symmetric construction can be made as, and under direct current is lit a lamp the situation of formula, this a pair of electrode non-symmetrical configuration can be made as.
(about refractory metal lining MC)
In the present invention, when the alumina grain growth inhibitor is made of refractory metal, as shown in Figure 2, at the outer surface of the sealing reservations (for example end of the 1b of path tube portion) of the path tube 1b of portion of light transparent ceramic gas-tight container 1, pre-configured refractory metal lining MC before its sealing step.
And, as refractory metal lining MC, use the netted lining or the paper tinsel of refractory metal.In present embodiment shown in Figure 2, adopted netted coating metal MC.The wall thickness t (μ m) of these refractory metal linings MC is in the scope of 0.03≤t≤0.30.Difficulty that make and operate will increase if the wall thickness t of coating metal less than 0.03 μ m, will cross thin.And when laser radiation, the metal ingredient of netted lining evaporates easily, thereby metal will become insufficient to the diffusion of fusing department 4.On the other hand, if the wall thickness t of coating metal MC surpasses 0.30 μ m, then heating time will be elongated.And the rigidity of net metal lining MC can uprise and processing when reeling netted lining on the sealing reservations of the path tube 1b of the portion difficulty that will become, and follows in this, and will become to the close property of the path tube 1b of portion descends easily, therefore not good in practicality.
The embodiment that refractory metal lining MC is made of netted lining preferably is constructed as follows.The bore φ (mm) of the hole of net is in the scope of 0.05＜φ＜0.50.If bore φ is below the 0.05mm, then makes the difficulty that to become, and will tail off through the laser energy of hole.On the other hand, if bore φ is more than the 0.50mm, then operation will become difficult.And metal will become insufficient to the diffusion of fusing department 4.
And the hole interval d (mm) of net is in the scope of 0.05＜d＜0.50.If the hole of net d at interval is below the 0.05mm, then make the difficulty that to become.On the other hand, if hole interval d is more than the 0.50mm, the laser energy that then sees through hole will tail off.In addition, as hole interval d, be meant the length of the paper tinsel part that forms on the pair of holes gap of adjacency.
(about sealing SP)
Sealing SP is shown in amplification among Fig. 3, and the aluminium oxide ceramics of the sealing reservations of the path tube 1b of portion comprises the alumina grain growth inhibitor.In the present embodiment, diffusing to fusion under the state of aluminium oxide ceramics from the refractory metal lining refractory metal that MC supplied with as the alumina grain growth inhibitor, and be solidified to form fusing department 4 at hermetic unit 2a place.As shown in Figure 3, fusing department 4 comprises weld portion 4a, is close to 4b of portion and binding part 4c.
The portion 4b of being close to is aforesaid the 2nd zone of fusing department 4, be between the inner face of part of not fusion of the aluminium oxide ceramics of the fusion path tube 1b of portion that enters adjacency and hermetic unit 2a that electric current imports conductor and the anti-halide part 2b in the formed gap, and the part that is solidified to form.In addition, sealing SP also can not possess the 4b of the portion of being close to.But, except weld portion 4a, also possess the 4b of the portion of being close to by sealing SP, thereby can carry out the higher sealing of reliability.
Binding part 4c is in the major part of the path tube 1b of portion not in the part of fusion, only softening the or fusion in outer circumferential side surface and be bonded in refractory metal lining MC and the part that forms.Sealing SP also can possess binding part 4c.
Like this, in the present embodiment, the metal of refractory metal lining MC diffuses to the fusing department 4 of sealing SP as monomer.The preferable range of content m (weight %) is for satisfying the scope of 0.5＜m＜30.In addition, if content m less than 0.5 weight %, will be difficult to obtain the effect of improving of thermal coefficient of expansion.And if be more than the 30 weight %, will become is easy to generate boundary's fracture.And, also can be used as oxide and be dispersed to the inside of fusing department 4 from the part of the refractory metal lining refractory metal that MC supplied with.
And refractory metal lining MC is pre-configured before the sealing of light transparent ceramic gas-tight container 1, but in most cases, and its major part still can be residual afterwards to form sealing SP refractory metal being supplied to fusing department 4 in.But according to air-proof condition, original state is destroyed even the part of refractory metal lining MC is separated, and also can not impact characteristic.
In the present invention, for light transparent ceramic gas-tight container 1 is sealed, and when the welding of the path tube 1b of portion by pottery forms sealing SP, be used to make the method for ceramic fusion to be not particularly limited.For example, when the aluminium oxide ceramics of the path tube 1b of portion and refractory metal lining MC are heated, and make the temperature of aluminium oxide ceramics rise to its melt temperature when above, the aluminium oxide ceramics fusion.And then, the aluminium oxide ceramics of fusion is blended in the surface of each connection end of hermetic unit 2a corresponding with the sealing reservations of the electric current importing conductor 2 that inserts the path tube 1b of portion and anti-halide part 2b, and refractory metal diffuses to the aluminium oxide ceramics from refractory metal lining MC.Subsequently, when fusion site being cooled off when stopping heating, aluminium oxide ceramics solidifies, fusing department 4 be fused to that electric current imports the hermetic unit 2a of conductor 2 and anti-halide part 2b each connect end and form sealing SP, thereby light transparent ceramic gas-tight container 1 obtains sealing.
To the mechanism that the aluminium oxide ceramics of the path tube 1b of portion heats, for example can use localized heating mechanism, induction heating mechanism and the electric heater (heater) etc. of heat ray projection-type of the based on halogen bulb etc. of laser or band speculum.In addition, as laser, for example can use YAG laser, CO
2Laser etc.
When the localized heating mechanism that uses the heat ray projection-type comes complete cycle to the sealing reservations of the path tube 1b of portion to heat, localized heating mechanism is disposed at the spaced position of regulation with respect to above-mentioned sealing reservations, for example when refractory metal lining MC is dictyosome, localized heating mechanism is disposed at the side of sealing reservations.As long as make on one side the work of localized heating mechanism, any one or both of the path tube 1b of portion of light transparent ceramic gas-tight container 1 and localized heating mechanism are rotated, just can be equably the complete cycle of the path tube 1b of portion be heated.But, for example when refractory metal lining MC is paper tinsel, also can for example come irradiating laser from the direction of the path tube 1b of portion extension from tube axial direction.And, also can be in a plurality of localized heating of disposing on every side of the path tube 1b of portion that disposes regularly mechanism, perhaps make the rotation around the path tube 1b of portion of localized heating mechanism, and then the heating arrangements of the complete cycle of the configuration encirclement path tube 1b of portion, under static state, light transparent ceramic gas-tight container 1 is heated thus.
(about discharge medium)
Discharge medium is to be used for discharging by it obtaining required luminous structure, but in the present invention, its formation is not particularly limited.For example, discharge medium forms medium by halide, the modulating voltage of luminescent metal and rare gas (gas) is constituted.In addition, in the present invention, the notion of " electrion " comprises that the pressure that ion (ion) is changed in the lighting a lamp of medium is above discharge, so-called extra high pressure discharge of atmospheric pressure.
The halide of luminescent metal mainly is the halide that sends the luminescent metal of visible light, can adopt known various metal halides.Promptly, estimate number Ra and luminous efficiency etc. about illuminant colour, average colour developing, radiation for the visible light that obtains to possess the required characteristics of luminescence, the metal halide of luminescent metal can be further according to the size (size) of light transparent ceramic gas-tight container 1 and input electric power, and from following known metal halide, at random select.
For example, can use one or more the halide of from the group that constitutes by sodium (Na), scandium (Sc), rare earth metal (dysprosium (Dy), thulium (Tm), holmium (Ho), praseodymium (Pr), lanthanum (La) and cerium (Ce) etc.), thallium (Tl), indium (In) and lithium (Li), selecting.In addition, as the halid halogen (halogen) of luminescent metal, can use any one or more of iodine, bromine, chlorine or fluorine.
It is effective medium for forming modulating voltage that modulating voltage forms medium, for example can use the halide of mercury or following metal.Promptly, form the halide of medium as modulating voltage, relatively large and the luminous quantity visible region of vapour pressure in lighting a lamp is less than the metal of luminous quantity of the visible region of above-mentioned luminescent metal, and for example the halide of aluminium (Al), iron (Fe), zinc (Zn), antimony (Sb), manganese (Mn) etc. is comparatively suitable.
Rare gas plays a role as starting gas and buffer gas.For example, can be with xenon (Xe), argon (Ar), krypton (Kr), neon (Ne) etc. with monomer or mixing and use.
The configuration example that is used to obtain required luminous discharge medium is as follows.
1. halide+the mercury of luminescent metal+rare gas: the so-called formation that adds the metal halid lamp (metal halide lamp) that mercury is arranged.
2. the halide of luminescent metal+the form halide+rare gas of medium: the formation of the so-called mercury free metal halide lamp of the mercury that the environment for use load is big not as modulating voltage.
3. mercury+rare gas: the formation of so-called high-pressure mercury lamp.
4. rare gas: use Xe to be used as the formation of the so-called xenon lamp of rare gas.
(other formations of the present invention)
Though be not essential constitutive requirements of the present invention, by adopting part or all of following formation, function that can the additional high-pressure discharge lamp, and improve performance.
(1) (about outer tube) high-pressure discharge lamp of the present invention can constitute like this: light a lamp under the state of light transparent ceramic gas-tight container 1 in being exposed to atmosphere.But, also light transparent ceramic gas-tight container 1 can be taken in to outer tube (not shown).In addition, can select in the outer tube vacuum, add any of environment that gas is arranged or atmospheric pressure state.
(2) (about speculum) high-pressure discharge lamp of the present invention can assemble mirror integralization.
[example 1]
The concrete formation of the high-pressure discharge lamp of the 1st form shown in the following table diagrammatic sketch 1.
Encirclement portion; Maximum outside diameter 15mm, maximum inner diameter 13mm
Path tube portion; External diameter 1.2mm, internal diameter 1.0mm, length 15mm
Anti-halide part; Mo, diameter 0.6mm, length 5mm
Electrode: W, diameter 0.6mm
The laser radiation direction of sealing step: from respect to tubular axis and the direction of quadrature is shone the outside of net lining.
In addition, above-mentioned lighting test be lit a lamp at 20 minutes, 10 minutes extinguish crosses point and go out and carry out under the pattern (mode).
[example 2]
[comparative example 1]
The laser radiation direction of sealing step: from respect to tubular axis and the direction of quadrature is shone the outside of paper tinsel.
Secondly, with reference to Fig. 4, the 2nd embodiment of high-pressure discharge lamp of the present invention is described.
In the present embodiment, in the fusing department 4 of the formed sealing SP of the path tube 1b of portion of light transparent ceramic gas-tight container 1, sintering aid is concentrated as the alumina grain growth inhibitor in the grain circle of the crystal grain that is present in aluminium oxide ceramics.Preferred 50～the 500ppm of the content of the sintering aid among the sealing SP.Sintering aid is on the outer surface of the sealing reservations that adhere to the path tube 1b of portion before the sealing step.But sintering aid also can just be contained in the aluminium oxide ceramics at first.
As mentioned above, be present in the alumina grain by the sintering aid as the alumina grain growth inhibitor, the growth of the crystal grain in the sealing step of aluminium oxide ceramics is inhibited.Its result, the difference that sealing SP and electric current import the hermetic unit 2a of conductor 2 or the thermal expansion between the anti-halide part 2b reduce and the crack produces and is prevented.
And, if except sintering aid, also contain refractory metal in the inside of sealing SP and be used as the alumina grain growth inhibitor, then can obtain more excellent crack and prevent effect.The scope that contains preferred 0.5～30 weight % of ratio of the refractory metal in the present embodiment.
[example 3]
The configuration example of the high-pressure discharge lamp of the 2nd form shown in the following table diagrammatic sketch 4.
Other specifications are identical with embodiment 1.
Secondly, with reference to Fig. 5 and Fig. 6, the 3rd embodiment that is used to implement high-pressure discharge lamp of the present invention is described.In the no sintering sealing step of the path tube 1b of portion of light transparent ceramic gas-tight container 1, easily because of organic property gas of emitting from aluminium oxide ceramics at the inside of sealing SP formation space V.If space V overgage then will be easy to generate the crack.
As shown in Figure 5, as can be known be: as long as the length of space V is below 60% with respect to the ratio of the length L of the tube axial direction of the fusing department 4 of sealing SP, then the crack produces and will be controlled in practical going up in the scope that allows.And, as can be known be: as long as the height of space V is below 80% with respect to the ratio of the maximum ga(u)ge of fusing department 4, then the crack produces and will be controlled in practical going up in the scope that allows.
And then, as shown in Figure 6, be known that: if with the face of the tube axial direction quadrature of fusing department 4 in, from electric current import conductor 2 radial 2 straight line angulations of drawing of the two ends of mind-set space V be in 30 °, then the crack produces and will be controlled in the practical scope that goes up permission.
[example 4]
The formation of the high-pressure discharge lamp of the 3rd embodiment shown in the following table diagrammatic sketch 5.
Secondly, the 4th embodiment that is used to implement high-pressure discharge lamp of the present invention is described.In the present embodiment, the particle diameter of the alumina grain of the fusing department 4 of sealing SP is 3～200 μ m, is preferably 10～150 μ m, and the major diameter of establishing alumina grain be L, the ratio L/W when minor axis is W satisfies 1.0≤L/W≤20, preferably satisfies 1.5≤L/W≤10.
[example 5]
The high-pressure discharge lamp specification is identical with example 1.For the particle diameter and the variform preproduction of the alumina grain of the fusing department of sealing, carry out 10,000 hours lighting test, what the investigation crack produced has or not.Investigation result is shown in table 1.In addition, evaluation result is defined as follows.A: free from flaw produces, B: lighting a lamp is to have the crack to produce C more than 8000 hours the time: lighting a lamp is to have the crack to produce D more than 5000 hours the time: have the crack to produce E: do not light a lamp in a few hours.
[table 1]
Sample (No.) particle diameter (μ m) L/W test result
1 3 1.0 C
2 10 1.5 A
3 10 10 B
4 10 20 C
5 150 1.5 B
6 150 10 B
7 150 15 D
8 300 1.5 E
Secondly, the 5th embodiment that is used to implement high-pressure discharge lamp of the present invention is described.In the present embodiment, electric current imports conductor 2 and constitutes, and satisfies 100≤S≤800 with the value S (MPa) of the compression stress of the part of fusing department 4 weldings of sealing SP.
[example 6]
The high-pressure discharge lamp specification is identical with example 1.For the different preproduction of Sealing Stress S (MPa) of electric current importing conductor 2, carry out 10,000 hours lighting test, what the investigation crack produced has or not.Investigation result is shown in table 2.In addition, evaluation result is defined as follows.A: free from flaw produces, B: lighting a lamp is to have the crack to produce C more than 8000 hours the time: lighting a lamp is to have the crack to produce D more than 5000 hours the time: have the crack to produce in a few hours.And the Young's modulus on the surface of fusing department 4 is 500GPa, and hardness is 40GPa.
[table 2]
Sample (No.) Sealing Stress (MPa) test result
1 -150 A
2 -500 B
3 -800 C
4 -1000 D
Secondly, with reference to Fig. 7 (a) and (b), (c), the 6th embodiment that is used to implement high-pressure discharge lamp of the present invention is described.Present embodiment constitutes: in the inside of the fusing department of sealing, the grain circle of the alumina grain of adjacency is close to mutually, and the crack does not form an i.e. grain gap, circle, originally small gap.
Fig. 7 (a) and (b), (c) are the electron micrographs in sealing vertical section, (a) an expression part is formed with a fusing department in gap, boundary, (b) further do not amplify expression with being formed with a position in gap, boundary in (a), (c) part that does not form grain gap, circle in (a) is further amplified expression.In addition, in (b) of Fig. 7, the grain circle that is the aluminium oxide ceramics of abnormity is that the position of black line shape part is a gap, boundary.
Grain gap, circle is not communicated to the outside of fusing department, therefore distinguishes to some extent with the crack, even be formed with the reason that this gap, boundary also can directly not become leakage (leak).But, if be formed with a gap, boundary, then in the life-span, can exist to reach the risk (risk) that the crack produces, therefore preferably do not form grain gap, circle.
[example 7]
The high-pressure discharge lamp specification is identical with example 1.By present embodiment, to preproduction (sample No.1) that does not have grain gap, circle and the lighting test that has a preproduction of the comparative example in gap, boundary (sample No.2) to carry out 10,000 hours, what the investigation crack produced has or not.Investigation result is shown in table 3.In addition, evaluation result is defined as follows.B: lighting a lamp is to have more than 8000 hours the time crack to produce C: lighting a lamp is to have the crack to produce more than 5000 hours the time.
[table 3]
Sample (No.) the grain clearance test result of circle
1 no B
2 have C
According to the present invention, comprise the alumina grain growth inhibitor in the fusing department of high-pressure discharge lamp after the polycrystalline alumina ceramic fusion of path tube portion is also solidified, thereby the growth of the alumina grain in the forming process of sealing is inhibited, and the difference that the aluminium oxide ceramics that a kind of sealing therefore can be provided and electric current import the thermal expansion of conductor diminishes and high-pressure discharge lamp that the crack generation of sealing is inhibited.
And, according to the present invention, by use diffuse to the refractory metal of fusing department inside and be present in sintering aid composition on alumina crystal grain circle of fusing department at least any, be used as the alumina grain growth inhibitor, thereby the crack that can easily suppress sealing produces.
And then, path tube portion is covered by using any the formed refractory metal at least by dictyosome and paper tinsel, thereby can when the heating and melting of path tube portion refractory metal easily be spread to fusing department inside as the alumina grain growth inhibitor.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-118853 | 2009-05-15 | ||
| JP2009118853 | 2009-05-15 | ||
| JP2009216091A JP2010287555A (en) | 2009-05-15 | 2009-09-17 | High pressure discharge lamp |
| JP2009-216091 | 2009-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101887838A true CN101887838A (en) | 2010-11-17 |
| CN101887838B CN101887838B (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101806252A Expired - Fee Related CN101887838B (en) | 2009-05-15 | 2010-05-14 | high pressure discharge lamp |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2251894A3 (en) |
| JP (1) | JP2010287555A (en) |
| CN (1) | CN101887838B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094647A (en) * | 2018-01-29 | 2019-08-06 | 深圳市绎立锐光科技开发有限公司 | A kind of Wavelength converter, luminescence component and lighting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1107285A2 (en) * | 1999-12-08 | 2001-06-13 | Toshiba Lighting & Technology Corporation | High-intensity discharge lamp, system for lighting the lamp and lighting appliance using the lamp |
| CN1340206A (en) * | 1999-10-15 | 2002-03-13 | 日本碍子株式会社 | High pressure discharge lamp arc tube and method of producing same |
| JP2006221928A (en) * | 2005-02-09 | 2006-08-24 | Toshiba Lighting & Technology Corp | High pressure discharge lamp |
| JP2009009921A (en) * | 2007-05-29 | 2009-01-15 | Toshiba Lighting & Technology Corp | lamp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68927594T2 (en) * | 1988-05-13 | 1997-07-24 | Gte Prod Corp | Arc bulb for high pressure metal vapor discharge lamps, lamp with such a bulb and method of manufacture |
| US5426343A (en) * | 1992-09-16 | 1995-06-20 | Gte Products Corporation | Sealing members for alumina arc tubes and method of making the same |
| JP2007115651A (en) | 2005-06-14 | 2007-05-10 | Toshiba Lighting & Technology Corp | High pressure discharge lamp, high pressure discharge lamp lighting device and lighting device |
| US7378799B2 (en) * | 2005-11-29 | 2008-05-27 | General Electric Company | High intensity discharge lamp having compliant seal |
| DE102006024238A1 (en) * | 2006-05-23 | 2007-11-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp |
| CN101506932B (en) * | 2006-08-18 | 2012-07-04 | 皇家飞利浦电子股份有限公司 | Metal halide lamp |
| US7741780B2 (en) * | 2007-02-26 | 2010-06-22 | Osram Sylvania Inc. | Ceramic discharge vessel having a sealing composition |
-
2009
- 2009-09-17 JP JP2009216091A patent/JP2010287555A/en active Pending
-
2010
- 2010-04-30 EP EP10161680A patent/EP2251894A3/en not_active Withdrawn
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340206A (en) * | 1999-10-15 | 2002-03-13 | 日本碍子株式会社 | High pressure discharge lamp arc tube and method of producing same |
| EP1107285A2 (en) * | 1999-12-08 | 2001-06-13 | Toshiba Lighting & Technology Corporation | High-intensity discharge lamp, system for lighting the lamp and lighting appliance using the lamp |
| JP2006221928A (en) * | 2005-02-09 | 2006-08-24 | Toshiba Lighting & Technology Corp | High pressure discharge lamp |
| JP2009009921A (en) * | 2007-05-29 | 2009-01-15 | Toshiba Lighting & Technology Corp | lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094647A (en) * | 2018-01-29 | 2019-08-06 | 深圳市绎立锐光科技开发有限公司 | A kind of Wavelength converter, luminescence component and lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101887838B (en) | 2012-04-25 |
| JP2010287555A (en) | 2010-12-24 |
| EP2251894A3 (en) | 2012-04-04 |
| EP2251894A2 (en) | 2010-11-17 |
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