CN1659673A - 带有抗氧化引入导线的电灯 - Google Patents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
- H01J5/34—Seals for leading-in conductors for an individual conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/46—Leading-in conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/28—Manufacture of leading-in conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/32—Sealing leading-in conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/38—Seals for leading-in conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/40—Leading-in conductors
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Abstract
电灯(1)具有灯管(2),一电气元件(3)容纳在其中。所述元件被连接到电流导线(4)、钼部分(5)和(21),它们具有用于防止氧化的从由铬-锰、铬-钴、铬-铁和铬-硼合金构成的组中选出的材料涂层。
Description
技术领域
本发明涉及一种电灯,包括:
玻璃灯管,其利用密封垫以不漏气的方式封闭,并且该灯管包含电气元件,
至少部分由钼制成并连接到所述电气元件的电流导线,该导线被部分地嵌入到所述密封垫中并且部分地配备有防止氧化的装置。
背景技术
这样一种电灯可从US-2002/0008477获知。
嵌入到密封垫中的具有一个或若干个钼箔的电流导线通常在电灯中使用,因为钼依照其机械负荷容量具有高抗热性,和因为钼具有与硬质玻璃的热膨胀系数相匹配且从石英玻璃,即含有至少95%重量的SiO2的玻璃的热膨胀系数偏离很小的热膨胀系数。不过,使用钼的缺点为:它容易氧化,这将引起相当大的破坏,例如,与灯架的接线端电接触的风险,以及升高密封垫的玻璃部分中产生应力和/或破裂的可能性的风险。
根据所引用的专利文献,电流导线提供有铬或铬镍合金的涂层。然而,所述已知的电灯具有这样的缺点:如果使用铬涂层的话,在箔和嵌入箔的玻璃之间粘合比较差。如果在已知的灯中使用了镍铬合金,则在箔和玻璃之间有较好的粘合,但所述已知的灯就具有这样的缺点:在电流导线中逐渐产生破裂的倾向升高。
发明内容
本发明的目的是提供一种在开头段落中所述种类的电灯,其中上面的缺点被消除。
根据本发明,所述目的是这样实现的:在开头段落中所述种类的电灯的特征在于防止氧化的装置是从通过铬-锰、铬-钴、铬-铁和铬-硼合金形成的材料组中选出的。
所述涂层可以提供在整个箔上或只提供在箔的与灯外的空气接触的那些部分上,或按照另外一种可选方案,它也可以提供在与箔连接的外导线上。一种铬-锰、铬-钴、铬-铁和铬-硼合金的覆盖涂层不但要比具有纯铬的涂层容易实现,而且所述涂层还可以有效地防止氧化。该涂层在升高的温度下对防止氧化尤其有效,例如直到接近550℃,在该情况下所述合金将具有99以下直至少于50原子百分比的铬含量。此外铬-锰、铬-钴、铬-铁和铬-硼合金还具有这样的优点:它们不会导致钼部分的脆性增加,并且在非常高的温度例如2000℃也是热稳定的。在非常高的温度下的热稳定性意味着作为高温的结果没有发生粘结分离,由此而能够形成适用于抗氧化涂层的化合物。这使得适用于在金属部分上形成涂层的这些化合物能够有效的防止氧化,例如在灯中,例如石英玻璃灯,其中在灯制造过程中使用了非常高的温度。此外,与铬不同,合金具有这样的优点:合金在灯的制造过程中融化。熔融的合金然后将其自身分布到Mo上,因此通过钼箔上的层能够确保较好的覆盖和保护。此外在实验中还发现通过这些合金在钼箔和玻璃之间获得了良好的粘合,使用铬-锰合金能够获得尤其好的结果。
特别的还发现用具有在80和99原子百分比之间的铬含量的铬合金形成的相关部分的涂层具有相当好的效果,因为在这样的铬含量的情况下,在灯制造过程中通过合金在涂层上形成铬的顶层。由于合金在钼箔上的流动和铬顶层的良好氧化防护特性,这样一种铬含量因此能够获得有效覆盖层的良好结合。
在一优选实施例中,用于防止钼箔氧化的合金包含94至96原子百分比的铬。在实验中发现:与具有较低或较高铬含量的合金相比较,这样一种铬含量能够相对容易地实现。
优选的,所述涂层具有为至少1μm和至多6μm的层厚。小于1μm的层厚将提供不足的钼氧化保护。大于6μm的层厚不必要的增加了成本,因为关于具有6μm层厚的涂层并未获得改进的氧化防护。另外,较厚的金属层将导致引线的机械强度降低和增加灯爆炸的风险。
通过电镀处理,例如通过金属盐的水溶液的电镀处理可容易的在钼部分上获得抗氧化涂层。电镀处理的优点在于合金金属可同时或连续提供。可选择的能够利用CVD处理来获得抗氧化涂层。电镀处理和CVD处理都具有这样的优点:能够在所有侧上提供涂层。然而与电镀相比,CVD相对昂贵。可选择的可利用PVD来提供金属,但该处理不但比电镀昂贵而且不能在一步中在所有侧上提供涂层。
不管由铬-锰、铬-钴、铬-铁和铬-硼合金的涂层提供的抗氧化保护如何,仍然能够以传统的方式来处理受保护的部分,例如被焊接到金属箔上,例如焊接到其上实现有灯管的不漏气密封垫的钼箔上,可以在受保护的部分上实现一个优良的电连接,例如利用灯架的触点,该连接点具有仅为几mΩ的电阻值,其高于铂或涂敷铂金的部分的电阻值。
灯的电气元件可以是处于电离气体或白炽体(例如包括卤素的惰性气体)中的一对电极。灯管可具有一个或若干个密封垫,各个电流导线通过该(每个)密封垫引出到外部。例如由石英玻璃或硬质玻璃制成的灯管可与反射体一起结合成一个灯。
附图说明
根据本发明的电灯的实施例在图中以纵截面的方式示出。
具体实施方式
在图中,电灯1具有石英玻璃灯管2,其以不漏气的方式封闭并且包含电气元件3,在图中为白炽灯体,并且电灯1还包括具有反射面11和透明板13的反射体10。灯管2利用胶结剂12固定在反射体10中。穿过密封垫20的电流导线4被连接到电气元件3。每个电流导线具有一个嵌入到密封垫中的箔21和延伸到灯管2之外的由钼构成的末端部分5。箔21和末端部分5都具有用于防止氧化的装置。为了这一目的,所述部分5和21具有以百分之5原子的锰形成的铬合金的涂层。该涂层具有接近2.5μm的层厚。用作灯的接触柱的末端部分5被焊接到所述箔。
使用卤素灯来进行加热室试验,所述卤素灯被暴露在530℃的空气中。所述卤素灯为具有1kW额定功率和220V的灯电压的SSTV型(StageStudio Theater and Video lamps(舞台演播室剧场和影像灯))的灯。在这些加热室试验中证实根据本发明的在电流导线上提供有以百分之5原子的锰形成的铬合金涂层的灯具有这样的电流导线:其具有相当好的抗氧化性。6次通过加热室,所述电流导线抵抗施加的530℃高温的时长是在与图1的部分5和21相应的部分上提供有铬涂层的已知灯的电流导线的两倍以上,即1677小时对642小时。
所示的灯例如可用于强光照明、用于投影设备,或用于照片、影像或电影拍摄。
Claims (5)
1.一种电灯,包括:
玻璃灯管,借助密封垫以不漏气的方式将所述玻璃灯管封闭,并且所述玻璃灯管包含一电气元件,
至少部分由钼制成并连接到所述电气元件的电流导线,该导线被部分地嵌入到所述密封垫中并且部分地配备了防止氧化的装置,其特征在于所述用于防止氧化的装置是从通过铬-锰、铬-钴、铬-铁和铬-硼合金形成的材料的组中选出的。
2.根据权利要求1所述的电灯,其特征在于所述合金包含80到99原子百分比的铬。
3.根据权利要求1所述的电灯,其特征在于所述合金包含94到96原子百分比的铬。
4.如权利要求1、2或3所述的电灯,其特征在于所述合金包括铬-锰。
5.如权利要求1、2、3或4所述的电灯,其特征在于所述涂层具有至少为1μm和至多为6μm的层厚。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP02077226.5 | 2002-06-07 | ||
EP02077226 | 2002-06-07 |
Publications (2)
Publication Number | Publication Date |
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CN1659673A true CN1659673A (zh) | 2005-08-24 |
CN100444302C CN100444302C (zh) | 2008-12-17 |
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Application Number | Title | Priority Date | Filing Date |
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CNB038130947A Expired - Fee Related CN100444302C (zh) | 2002-06-07 | 2003-05-21 | 带有抗氧化引入导线的电灯 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7378798B2 (zh) |
EP (1) | EP1527472A2 (zh) |
JP (1) | JP4313304B2 (zh) |
CN (1) | CN100444302C (zh) |
AU (1) | AU2003228080A1 (zh) |
WO (1) | WO2003105177A2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107464739A (zh) * | 2017-08-02 | 2017-12-12 | 常熟林芝电子技术有限公司 | 具有钼箔防氧化功能的石英汽车卤素灯泡的加工方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7759871B2 (en) | 2005-12-16 | 2010-07-20 | General Electric Company | High temperature seal for electric lamp |
DE102006032752A1 (de) * | 2006-07-14 | 2008-01-17 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Oxidationsschutz für Glas-Metallübergänge |
JP2010073330A (ja) * | 2008-09-16 | 2010-04-02 | Koito Mfg Co Ltd | 放電ランプ装置用水銀フリーアークチューブおよび同アークチューブの製造方法 |
US20100119740A1 (en) * | 2008-10-17 | 2010-05-13 | Electronics Packaging Solutions, Inc. | Glass-to-metal bond structure |
US8950162B2 (en) | 2010-06-02 | 2015-02-10 | Eversealed Windows, Inc. | Multi-pane glass unit having seal with adhesive and hermetic coating layer |
US9328512B2 (en) | 2011-05-05 | 2016-05-03 | Eversealed Windows, Inc. | Method and apparatus for an insulating glazing unit and compliant seal for an insulating glazing unit |
CA2958414C (en) | 2013-10-18 | 2021-11-16 | Eversealed Windows, Inc. | Edge seal assemblies for hermetic insulating glass units and vacuum insulating glass units |
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GB688859A (en) | 1950-08-22 | 1953-03-18 | Joseph Woolman | Improvements in or relating to the production of glass-to-metal seals |
NL106429C (nl) * | 1959-09-23 | 1963-11-15 | Philips Nv | Werkwijze ter vervaardiging van een elektrische lamp, alsmede volgens deze werkwijze vervaardigde elektrische lamp |
US3235379A (en) * | 1965-03-26 | 1966-02-15 | Bendix Corp | Chromium-cobalt alloy |
US3420944A (en) * | 1966-09-02 | 1969-01-07 | Gen Electric | Lead-in conductor for electrical devices |
BE794757A (fr) * | 1973-01-30 | 1973-05-16 | Cockerill | Procede de fabrication d'un produit ferreux a revetement inoxydable |
NL7403204A (nl) * | 1974-03-11 | 1975-09-15 | Philips Nv | Elektrische lamp. |
US3932198A (en) * | 1974-05-24 | 1976-01-13 | Amchem Products, Inc. | Coating solution having trivalent chromium and manganese for coating metal surfaces |
NL7501272A (nl) * | 1975-02-04 | 1976-08-06 | Philips Nv | Electrische lamp. |
JPS53132184A (en) * | 1977-04-23 | 1978-11-17 | Kondo Sylvania Kk | Lamp and method of producing same |
DE3610922A1 (de) * | 1986-03-24 | 1987-10-01 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Halogengluehlampe |
AT4408U1 (de) * | 2000-05-18 | 2001-06-25 | Plansee Ag | Verfahren zur herstellung einer elektrischen lampe |
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2003
- 2003-05-21 CN CNB038130947A patent/CN100444302C/zh not_active Expired - Fee Related
- 2003-05-21 EP EP03725549A patent/EP1527472A2/en not_active Withdrawn
- 2003-05-21 WO PCT/IB2003/002280 patent/WO2003105177A2/en active Application Filing
- 2003-05-21 JP JP2004512156A patent/JP4313304B2/ja not_active Expired - Fee Related
- 2003-05-21 US US10/516,550 patent/US7378798B2/en not_active Expired - Fee Related
- 2003-05-21 AU AU2003228080A patent/AU2003228080A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107464739A (zh) * | 2017-08-02 | 2017-12-12 | 常熟林芝电子技术有限公司 | 具有钼箔防氧化功能的石英汽车卤素灯泡的加工方法 |
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---|---|
WO2003105177A2 (en) | 2003-12-18 |
AU2003228080A1 (en) | 2003-12-22 |
JP4313304B2 (ja) | 2009-08-12 |
CN100444302C (zh) | 2008-12-17 |
WO2003105177A3 (en) | 2004-03-18 |
US20050174058A1 (en) | 2005-08-11 |
EP1527472A2 (en) | 2005-05-04 |
AU2003228080A8 (en) | 2003-12-22 |
JP2005529458A (ja) | 2005-09-29 |
US7378798B2 (en) | 2008-05-27 |
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