CN1170232A - 用于无电极荧光灯的线圈组件 - Google Patents

用于无电极荧光灯的线圈组件 Download PDF

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CN1170232A
CN1170232A CN97113863A CN97113863A CN1170232A CN 1170232 A CN1170232 A CN 1170232A CN 97113863 A CN97113863 A CN 97113863A CN 97113863 A CN97113863 A CN 97113863A CN 1170232 A CN1170232 A CN 1170232A
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coil
pedestal
magnetic core
electrodeless fluorescent
arc chamber
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F·赫策尔
R·S·麦菲利
V·J·阿尔塞纳
J·C·奥伯利
D·O·沃姆比
S·J·埃弗里斯特
M·H·吉拉克
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General Electric Co
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General Electric Co
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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
    • 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
    • H01J5/00Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/58Means for fastening the separate part to the vessel, e.g. by cement
    • H01J5/60Means for fastening the separate part to the vessel, e.g. by cement for fastening by mechanical means

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

无电极荧光灯的线圈组件包括空心铁氧体磁心3D和线圈31。通过围绕磁心的线圈骨架34,磁心被固定在基座32上。利用簧环33或凸出部使线圈31固定在骨架34上。线圈31缠绕在骨架上。引线柱36使锡焊在其上的线圈与激励电路连接。

Description

用于无电极荧光灯的线圈组件
本发明的一个方案涉及线圈组件。线圈支承件的例证性应用在无电极荧光灯中,而且将在下面结合该应用描述线圈支承件。本发明的另一个方案涉及带有线圈组件的无电极荧光灯。
例如,EP-A-0660375中披露了无电极荧光灯。
该灯包括有在受激时能维持放电的填充物的密闭放电灯室。其中,灯室涂敷有把放电的UV辐射转换成可见光的荧光层,灯室有包含线圈组件的线圈的凹腔,该组件在灯室中产生射频(RF)的螺线磁场。线圈由RF振荡器激励。RF振荡器装在支承着线圈组件、振荡器和放电室的外壳中。线圈组件包括由外壳支承的基座部件。组件的线圈包括磁心和磁心上的绕组。磁心为铁氧体空心圆柱体。绕组直接缠绕在磁心上。磁心和绕组与基座部件上的连接引线柱相连接。连接引线柱与振荡器连接。
根据本发明的一个方案,提供线圈组件,它包括:基座、支承在基座上的由可渗透磁性的材料构成的磁心、围绕磁心的线圈、和在基座上的固定磁心的装置,该装置包括与磁心啮合的卡箍。
因此,避免了粘合剂的使用,并通过把磁心卡在基座上简化了制造组件的生产工艺。
本发明的一个实施例中,磁心是空心的,并且固定装置的卡箍至少包括穿过磁心中央的一对销,各个销有与远离基座的磁心的一端啮合的横向凸出部。
因此,把磁心推在起卡箍作用的销上,使其固定,简化了组装操作。
本发明的另一实施例中,固定装置至少包括一对在其间销定磁心的销,各个销有与远离基座的磁心一端啮合的横向凸出部。
因此,把磁心推在起卡箍作用的这些销之间,使其固定,简化了组装操作。
又一个实施例中,固定装置为围绕磁心的线圈骨架,由所述卡箍将磁心固定在线圈骨架中,该卡箍可以是线圈骨架内的簧环,或有与磁心啮合的横向凸出部的多个销。
本发明的另一个方案是提供无电极荧光灯,该灯包括:有在受激时可维持放电的填充物的放电室,并至少在灯室内表面上涂有荧光层,灯室有凹腔,和按照本发明所述第一方案的线圈组件,组件的线圈在凹腔里边。
所述另一个方案的实施例还包括支承线圈组件的基座和放电室的外壳。
外壳可容纳用RF信号激励线圈的装置。
本发明的再一个方案提供了无电极荧光灯,它包括:有基座的线圈组件;
带有装线圈组件的凹腔的放电室;
有围绕灯室基座延伸的沟道的开口环,该环固定在线圈组件的基座上;和外壳;
该环由外壳压紧,以在沟道中卡住灯室的基座。
再一方案的实施例中,开口环由线圈组件的基座支承,基座开口,基座和环也就被外壳压紧。
再一方案的另一个实施例中,基座支承在开口环中,该环由外壳压紧,以卡紧基座和环中的灯室。
为了更好地理解本发明,下面将通过举例参照相应的附图进行说明,其中:
图1是无电极荧光灯的简明示意图;
图2是按本发明的一个方案的例证性的线圈组件的剖视图;
图3是按本发明的一个方案的另一例证性的线圈组装的剖视图;
图4A-4C是本发明常用优选实施例的线圈支承件的侧部、顶部和底部图。
图5A和5B是灯壳的局部图。
图6是线圈支承件的另一实施例的局部剖视图;
图7是用于图6实施例的卡箍的平面图,和
图8是替代图6和7的实施例的剖视图。
参见图1,荧光灯包括密封的放电室1,该放电室中含有在适当激励时能够维持放电的公知含汞蒸汽的填充物(未示出)。放电产生UV光,在灯室内表面上的荧光涂层2将其转换成可见光。灯室可以有已知技术中的其它涂层。其它涂层包括导电透明层(未示出)。
灯室有凹腔3和沿凹部的轴延伸的排气管4,排气管中包含汞齐5。
由凹腔3中的线圈6产生的RF场激励,产生放电,线圈由包括RF振荡器7和整流器8的电路78激励。
线圈6为将在后面描述的线圈组件的一部分。线圈组件,放电室和激励电路78由与灯头10比如卡口灯头或螺丝口灯头连接的外壳9支承。
图2表示线圈组件。组件包括空心圆柱形的铁氧体磁心20,围绕该磁心绕制线圈21。线圈21可直接绕制在磁心20上。
组件包括基座22,在此例中它支承放电室1。参见图1,灯室1的下缘11放在基座22上,灯室1可以以各种适当的方式固定在基座上。
磁心20是空心圆柱体,排气管4穿过它伸出。与基座22为一体并直立其中的是至少一对穿过磁心中央的销23。在远离基座的端部,销有与磁心啮合并将其维持在基座上的横向凸出部24。
销是有弹性的,为把磁心组装在支承件上,将磁心推压在销的上方,直至凸出部啮合在远离基座的磁心的表面上。因此,销可作为卡箍。
弹簧垫圈25可设置在磁心和基座22之间,防止磁心在托架上的振动。
线圈21被锡焊或用其它方式比如压接,连接在连接线圈和激励电路78的引线柱26上。
在另一种结构中,用簧环(未示出)代替凸出部24。该结构中,可用管代替销。
参照图3,另一线圈组件包括空心圆柱体铁氧体磁心30和线圈31。放电室的排气管4穿过磁心30的中央。
该组件包括可按图2支承基座22的相同方式支承放电室的基座32。
与基座32为一体并直立其内的是线圈骨架34。线圈31绕制在线圈骨架34上。通过固定在线圈骨架内周边上的凹槽中的簧环33,使磁心保持在线圈骨架的内部。可用与图2中凸出部24相类似的向内凸出部代替簧环33。
线圈31被锡焊,或是通过其它方式,比如压接连接在连接线圈和激励电路78的引线柱上。为防止磁心振动,可设置与图2的垫圈25类似的弹簧垫圈。
图4A至4C表示本发明目前的优选实施例的线圈支承件。
线圈支承件为单件塑料压制件,它包括与圆柱体线圈骨架为一体的圆形基座42和直立基座的磁心定位架40。使用中,圆柱形骨架和定位架40容纳空心圆柱体铁氧体磁心(为清楚而未示出),该骨架和定位架40由与线圈定形销45交错在一起的磁心定位销43限定。通过在定位架40上靠近基座42一端的凸缘46和在磁心定位销43上远离基座42一端的侧凸部44,磁心被同轴地保持在定位架40的内部。凸出部44与远离凸缘46的磁心端部啮合。线圈定形销45有模压在其上的绕线引导槽。销43和45是有弹性的。
为制造线圈组件,把铁氧体磁心推入骨架和定位架40中,并同轴地保持在凸缘46和凸出部44之间。
然后,把线圈缠绕在线圈定形销上。通过磁心上的线圈绕组对销43和45加压,从而使缠绕的线圈也保持在磁心上。
为固定激励电路78的电路板边缘,基座42设有限定槽缝的成对的壁47。为避免接触排气管4的端部,电路板偏离基座42的中心。
为连接引线柱,小孔48设置在邻近槽缝的基座42中,线圈被锡焊或用其它方式,比如压接,连接在引线柱上,该引线柱使线圈与电路板78相连。
槽缝49设置在基座42的边缘上,与外壳9中的凸出部啮合,以防止线圈组件相对于外壳旋转,并仅允许线圈组件按一个取向装配在外壳上。
图5B是外壳9、电路板78、线圈组件的基座42和放电室1的局部剖视图。
外壳9有支承基座42的内圆柱形凸缘50。用楔51使基座保持在凸缘上,凸缘50和楔51是与外壳9整体模压的。凸缘50的凸出部52(图5A)与在基座42的边缘上的逆旋转槽49(图4B)啮合。
为在外壳中固定基座42,把基座42简单地向楔51上方推压,直至其卡进凸缘50和楔51之间的位置。
也可对上述实施例进行各种改进。放电室1可由图1所示的线圈组件的基座直接支承。另一方面,灯室1也可由外壳9直接支承。
图5的电路板78有容纳连接引线柱26或36的套管。
图6表示图5B所示结构的两个改型。图6中图5B的凸缘50和楔用与外壳9模压为一体的齿弧60代替。此外,放电室由利用锁键62与线圈组件的基座42固定的开口环61(也图示在图7中)夹持,锁键穿过基座42中的相应槽缝凸出并把它卡在基座上。
放电室的下缘11按隆起64的形状构成径向外凸出部。开口环61有沟槽63,它在围绕灯室大约180°的弧线上与凸部啮合。
为组装灯室,卡箍、线圈支承件和有容纳灯室的开口65的开口环61被推向隆起64。然后,灯室和开口环装在线圈支承件上方,并把锁键62推进线圈支承件的基座42中的槽缝里。
为把灯室固定在卡箍上,可以使用粘合剂。另一方面,基座42沿半径66开口,由于基座沿齿弧受力,因此,开口和卡箍也对在卡箍中卡紧的灯室加压。
参看图8,线圈组件6有基座42,它被弹性开口环80支承。
环80的外周边与在外壳上的齿弧60啮合。基座42固定在环80内周边中的凹槽中,灯室基座上的隆起64在高于环80中的基座42上用沟道83啮合。电路78通过槽缝47固定在基座42上。再有,槽81设置在外壳中,以防止外壳9中电路板的旋转。
为组装灯室1、环80、线圈组件6、电路板78和外壳9:
充分打开开口环,使线圈组件的基底42迅速夹入该环中的凹槽里;
电路板固定在槽缝47中,并最好利用与基座42上连接引线柱啮合的电路板上的插座把线圈与电路板连接;
放电室被迅速夹入沟道83;
该组装的部件向下推入与齿弧60啮合的外壳中;和
用齿弧压紧环80,以保持放电室和基座42。
灯与由包含振荡器7和整流器8的激励电路78构成的激励电路部分分别制造和销售。激励电路78可与放电室和线圈组件分开保存。

Claims (10)

1.一种无电极荧光灯包括:
放电室,内中充有受激励时能维持放电的填充物;和在放电室内表面上的一种荧光涂层,放电室带有凹腔;
线圈组件,它包括:
基座、支承在基座中的由可渗透磁性的材料构成的磁心、环绕磁心的线圈,和
用以将磁心固定在基座上的装置,此固定装置包括与磁心啮合的卡箍装置;
线圈组件的线圈和磁心被装在放电室的凹腔中。
2.按照权利要求1所说的无电极荧光灯,其特征在于固定装置与基座为一个整体。
3.按照权利要求1或2所说的无电极荧光灯,其特征在于固定装置至少包括一对销,在销之间锁定磁心,各销分别有与远离基座的磁心的一端啮合的横向凸出部。
4.按照权利要求1或2所说的无电极荧光灯,其特征在于磁心是空心的,并且固定装置至少包括穿过磁心的一对销,各销分别有与远离基座的磁心的一端啮合的横向凸出部。
5.按照权利要求1,2或4所说的无电极荧光灯,其特征在于线圈直接缠绕在磁心上。
6.按照权利要求1或2所说的无电极荧光灯,其特征在于固定装置也是线圈骨架,磁心固定在其内部,线圈绕在线圈骨架上,而且磁心通过骨架内的簧环固定在骨架中。
7.按照上述任一权利要求所说的无电极荧光灯,其特征在于还包括支承线圈组件和放电室的外壳。
8.按照上述任一权利要求所说的无电极荧光灯,其特征在于放电室直接被线圈组件的基座支承。
9.按照上述任一权利要求所说的无电极荧光灯,其特征在于放电室基座有啮合在围绕放电灯基座延伸的沟道中的径向向外凸出部,该沟道将限定在固定到线圈组件的所说基座的卡箍中。
10.按照权利要求7所说的无电极荧光灯,其特征在于包括围绕灯室基座并围绕线圈组件的基座延伸的开口环,通过将开口环插入外壳中加压,卡紧线圈组件的基座和灯室的基座。
CN97113863A 1996-06-26 1997-06-26 用于无电极荧光灯的线圈组件 Pending CN1170232A (zh)

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GB9613359.0 1996-06-26
GB9613359A GB2314689A (en) 1996-06-26 1996-06-26 Coil assembly

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EP (1) EP0817241B1 (zh)
JP (1) JP3950516B2 (zh)
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DE (1) DE69717353T2 (zh)
GB (1) GB2314689A (zh)

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DE69717353D1 (de) 2003-01-09
EP0817241A2 (en) 1998-01-07
JPH1092391A (ja) 1998-04-10
US6084359A (en) 2000-07-04
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EP0817241B1 (en) 2002-11-27

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