CN1028581C - 无电极低压放电灯 - Google Patents

无电极低压放电灯 Download PDF

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Publication number
CN1028581C
CN1028581C CN92100448A CN92100448A CN1028581C CN 1028581 C CN1028581 C CN 1028581C CN 92100448 A CN92100448 A CN 92100448A CN 92100448 A CN92100448 A CN 92100448A CN 1028581 C CN1028581 C CN 1028581C
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sleeve
cavity
bulb
fuse
discharge lamp
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CN1063580A (zh
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H·J·埃金克
W·H·A·M·弗里德里希斯
N·G·T·范根尼普
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Koninklijke Philips NV
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Philips Gloeilampenfabrieken NV
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/048Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using an excitation coil
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/52Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523Heating or cooling particular parts of the lamp

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

本发明的无电极低压放电灯有一个灯泡(1),在灯泡(1)的一个端部(3)有一个空腔(2)。空腔(2)中装有一个卷绕在塑料套筒(5)上的线圈(4),塑料套筒(5)中有一个为一个软磁芯子(6)所环绕的充有液体的管状容器(7)。塑料套筒(5)基本上充满弹性聚合物。此外,塑料套筒(5)还可以包在弹性聚合物(9)中。该弹性聚合物确保空腔(4)内的各构件具有较低的工作温度。

Description

本发明涉及这样的一种无电极低压放电灯,该放电灯包括:
一个以真空气密的形式密封的灯泡,灯泡里面充有可电离的金属蒸汽和稀有气体,且灯泡的一个端部有一个空腔;
一个线圈,卷绕在灯泡空腔中由合成材料制成的套筒上;
一个软磁材料制成的芯子,装在合材料制成的套筒中;
一个充有液体的小管,小管置于软磁材料制成的芯子中,伸出空腔外,且在该腔外有一个法兰。
从欧洲专利EP-0384520中可以了解到这种类型灯的情况。
该专利的灯配备有一个充液体的小管,以散除灯工作期间产生的热量,防止特别是由软磁材料制成的芯子温度过高。这是因为芯子的单位磁损耗随温度而增大,而磁导率因温度升高而开始下降。借助于充有液体的小管进行冷却,其目的就是要抑制这些对灯的发光效率有不利影响的因素。
该专利的灯有这样的风险,即其芯子的温度较高。
本发明的目的是提供本说明书开端所述的那种结构既简单又能保证芯子的温度可以处于较低值的灯。
上述目的是这样达到的,即灯的套筒内至少基本上充满弹性聚合物。
芯子和小管各有各的热膨胀系数。因此,而且也由于这些元件在尺寸上的容许偏差,要使小管和芯子彼此之间既紧密接触,而又要防止产生会使芯子裂开的应力,是有困难的。
我们确实可以设法使得在工作过程中,小管在芯子中实现紧配合,但即使这样,热量必然还会通过小管与芯子之间的缝隙传递。又由于小管是最里面的元件,其表面积较小,因而单位面积上必然仍有较大的热流通过。
由于本发明的灯的套筒内部空间至少基本上充满弹性聚合物,因而芯子与小管之间紧密连接。
可以通过例如将芯子研磨到正确的直径使套筒与芯子紧配合。这样就改善了套筒与芯子之间的热传递,这种改善也是由于芯子的外表面较大所致。不然的话也可以使套筒芯子之间形成充有弹性聚合物的间隙。按照本发明的措施,热量就能更好地传递到小管,再从小管传递到灯的周围环境中。
在一个较好的实施例中,套筒中不仅充以弹性聚合物,而且被包封在该聚合物中。这样就降低了热阻,从而使灯泡的空腔形成芯子的冷却环境。套筒封装起来还有这样的好处,即可使线圈在套筒周围保持固定。线圈长时间在工作温度下膨胀终究会使自身下垂,从而使线圈匝间的间距变大。
为易于制造这种灯,最好是将灯泡和空腔中的装配件制成分开的子配件。考虑到灯泡这个主要由玻璃制成的元件中空腔尺寸的容许偏差,封装的套筒在四周与灯泡接触是不起防护作用的。但由于套筒的外壳表面是最外层的表面,必然比小管的表面大得多。因此单位面积的热流要小得多,从而使灯泡与套筒外壳之间接触得不太紧密成了次要的影响因素。
采用弹性聚合物还有这样的好处,即制造各种不同元件的材料之间(特别是小管与芯子之间)在膨胀系数方面的差别不难调节。常用的材料是:灯泡采用玻璃;套筒采用合成材料,例如液晶聚合物;芯子采用铁氧体,例如Philips    4C6;小管采用金属,例如铜;弹性聚合 物采用橡胶,例如硅橡胶。
此外,本发明的灯在例如运输过程中的防震性能更好。
现在参看附图介绍和说明本发明的上述和其它更详细的情况,图中以部分剖视部分正视的形式示出了一个灯。
该无电极低压放电灯有一个灯泡1,灯泡1以真空气密的形式密封,由例如钙玻璃制成,里面装有可电离的金属蒸汽和稀有气体,且灯泡的一个端部3有一例如由铅玻璃制成的空腔2。
空腔2中有一个线圈4,卷绕在合成材料制成的套筒5上。合成材料制成的套筒5中有一个软磁材料制成的芯子6。充有液体的小管7置于芯子6中,并伸出腔2之外,在那里有一个法兰8。
在所举的实施例中,灯泡1中充有稀有气体和作为可电离金属的水银,灯泡壁上涂有荧光粉。
套筒5中充有弹性聚合物9。该聚合物充满了小管7与芯子6之间的间隙。在所举的实施例中,聚合物还包着套筒5。
图中的小管7、芯子6和带线圈4的套筒5与聚合物9一起形成子配件,并作为子配件装设在空腔2中。因而子配件4、5、6、7、9可从空腔2中卸除。聚合物9采用硅橡胶。
图中,套筒5由其上的卡口接头12、13固定到合成材料制成的支架14上,支架14有一个法兰15,法兰15的自由端上有钩16。小管7的法兰8与支架14的法兰15彼此固定在一起,贴着法兰8放置了由合成材料(例如,硅橡胶)制成的薄片17。这样,灯就可以装设在一个金属支架上而不致使该支架和法兰8之间有电连接。合成材料制成的灯头19由钩16夹持着,用例如硅树脂化合物18装设在灯泡1上。引到电源的电缆可以连接到在法兰15处的触点20上,线圈4即连接到触点20上。

Claims (5)

1、一种无电极低压放电灯,包括:
一个以真空气密的形式密封的灯泡(1),灯泡(1)里面充有可电离的金属蒸汽和稀有气体,且在灯泡的一个端部(3)有一个空腔(2);
一个线圈(4),卷绕在灯泡(1)的空腔(2)中由合成材料制成的套筒(5)上;
一个由软磁材料制成的芯子(6),装在合成材料制成的套筒(5)中;
一个充有液体的小管(7),装在由软磁材料制成的芯子(6)中,伸出空腔(2)外,且在空腔外有一个法兰(8);
其特征在于,套筒(5)至少基本上充满弹性聚合物(9)。
2、如权利要求1所述的无电极低压放电灯,其特征在于,套筒(5)被包在聚合物(9)中。
3、如权利要求1或2所述的无电极低压放电灯,其特征在于,经包住的套筒(5)连同线圈(4)、芯子(6)和小管(7)形成一个与灯泡(1)分开的子配件。
4、如权利要求1或2所述的无电极低压放电灯,其特征在于,聚合物(9)为硅橡胶。
5、如权利要求3所述的无电极低压放电灯,其特征在于:聚合物(9)为硅橡胶。
CN92100448A 1991-01-25 1992-01-22 无电极低压放电灯 Expired - Fee Related CN1028581C (zh)

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NL9100124 1991-01-25
NL9100124 1991-01-25

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CN1063580A CN1063580A (zh) 1992-08-12
CN1028581C true CN1028581C (zh) 1995-05-24

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CN92100448A Expired - Fee Related CN1028581C (zh) 1991-01-25 1992-01-22 无电极低压放电灯

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US (1) US5291091A (zh)
EP (1) EP0496464B1 (zh)
JP (1) JPH04308648A (zh)
KR (1) KR920015418A (zh)
CN (1) CN1028581C (zh)
DE (1) DE69205592T2 (zh)
ES (1) ES2079779T3 (zh)
HU (1) HU209221B (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0551679A1 (en) * 1992-01-07 1993-07-21 Koninklijke Philips Electronics N.V. Electrodeless low-pressure discharge lamp
US5572083A (en) * 1992-07-03 1996-11-05 U.S. Philips Corporation Electroless low-pressure discharge lamp
EP0577211B1 (en) * 1992-07-03 1997-09-03 Koninklijke Philips Electronics N.V. Electroless low-pressure discharge lamp
ES2109425T3 (es) * 1992-10-21 1998-01-16 Koninkl Philips Electronics Nv Conjunto de iluminacion y lampara de descarga de baja presion sin electrodo apropiada para su utilizacion en dicho conjunto.
EP0594247B1 (en) * 1992-10-21 1997-09-24 Koninklijke Philips Electronics N.V. Illumination unit and electrodeless low-pressure discharge lamp suitable for use therein
HU214131B (en) * 1994-02-17 1997-12-29 Ge Lighting Tungsram Rt Low-pressure discharge lamp without electrode
GB9603197D0 (en) * 1996-02-15 1996-04-17 Gen Electric Electrodeless discharge lamp
DE69717234T2 (de) * 1996-04-19 2003-09-11 Koninkl Philips Electronics Nv Elektrodenlose niederdruckentladungslampe
GB2314671A (en) * 1996-06-26 1998-01-07 Gen Electric Electrodeless fluorescent lamp
CN1134820C (zh) * 1997-10-07 2004-01-14 皇家菲利浦电子有限公司 包括作为电极的压电变压器次级侧的放电灯和照明装置
US6433478B1 (en) * 1999-11-09 2002-08-13 Matsushita Electric Industrial Co., Ltd. High frequency electrodeless compact fluorescent lamp
AU2003281399A1 (en) * 2002-07-02 2004-01-23 Matsushita Electric Industrial Co., Ltd. Bulb type electrodeless discharge lamp and electrodeless discharge lamp lighting device
CN1860579B (zh) * 2003-10-24 2010-04-28 松下电工株式会社 无电极放电灯
WO2005076316A1 (ja) * 2004-02-05 2005-08-18 Matsushita Electric Industrial Co., Ltd. 無電極放電ランプ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8104223A (nl) * 1981-09-14 1983-04-05 Philips Nv Elektrodeloze gasontladingslamp.
DE3838121A1 (de) * 1988-11-10 1990-05-17 Vdo Schindling Temperaturgeber
NL8900406A (nl) * 1989-02-20 1990-09-17 Philips Nv Elektrodeloze lagedrukontladingslamp.
CN1055446A (zh) * 1990-04-06 1991-10-16 菲利浦光灯制造公司 无电极低压放电灯

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CN1063580A (zh) 1992-08-12
HU209221B (en) 1994-03-28
KR920015418A (ko) 1992-08-26
EP0496464A3 (en) 1993-06-23
ES2079779T3 (es) 1996-01-16
US5291091A (en) 1994-03-01
HU9200205D0 (en) 1992-04-28
EP0496464A2 (en) 1992-07-29
EP0496464B1 (en) 1995-10-25
HUT60065A (en) 1992-07-28
DE69205592T2 (de) 1996-05-30
JPH04308648A (ja) 1992-10-30
DE69205592D1 (de) 1995-11-30

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