EP1193732A2 - Wendelelektrode für eine Leuchtstofflampe und damit versehene Leuchtstofflampe - Google Patents
Wendelelektrode für eine Leuchtstofflampe und damit versehene Leuchtstofflampe Download PDFInfo
- Publication number
- EP1193732A2 EP1193732A2 EP01119855A EP01119855A EP1193732A2 EP 1193732 A2 EP1193732 A2 EP 1193732A2 EP 01119855 A EP01119855 A EP 01119855A EP 01119855 A EP01119855 A EP 01119855A EP 1193732 A2 EP1193732 A2 EP 1193732A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spiral
- electrode
- filament
- pressure discharge
- discharge lamp
- 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.)
- Withdrawn
Links
- 238000003466 welding Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000002800 charge carrier Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 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
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Definitions
- the invention is based on a filament electrode for a low-pressure discharge lamp, especially fluorescent lamp, according to the preamble of claim 1. It is in particular a spiral electrode, which comprises a coil body and two coil endings. there the two spiral ends each have a connection area which they can be conductively connected to a respective power supply section are.
- a filament electrode has been used in a fluorescent lamp known, which is explained in more detail below with reference to FIG. 1.
- the in Fig. 1 shown coil electrode 10 has coil ends 12 that run along of the helical axis 14 of the helical body 16. Within one Fluorescent lamps are the filament ends 12 at their connection areas 18 with power supply sections 20 of the fluorescent lamp Welding or clamping connected. Deviating from the illustration In Fig. 1, spiral electrodes are also known, the spiral ends of which are parallel run to the helix axis of the helix body.
- the coil body must be pasted with an emitter that is is usually barium, strontium or calcium carbonate.
- the spiral electrode is formed. This is the conversion process of the on the spiral electrode applied emitter in a corresponding oxide (e.g. barium, Strontium or calcium oxide), which is responsible for charge carrier emission and is therefore required for the function of the fluorescent lamp.
- a corresponding oxide e.g. barium, Strontium or calcium oxide
- the coil electrode very often causes problems that result cause the emitter to be connected to the power supply sections arrives. In this case, proper formation cannot be carried out and the coil electrode must be connected to the Power supply sections are discarded.
- one Low pressure discharge lamp with a small inner bulb diameter and a correspondingly small spiral body can hardly be prevented that the emitter reaches the power supply sections.
- This task is performed on a spiral electrode with the features of the generic term of claim 1 in that one between the two Connection areas of the two spiral ends formed link is outside the coil body. It is precisely in this case possible to dip the coil body into a paste of emitter, without the connection areas and thus the power supply sections come into contact with the emitter at the same time. By immersing the coil body can be wetted with a relatively large amount of emitter be essentially the life of a fluorescent lamp certainly.
- a first advantageous development of the invention provides that the spiral body has a straight helical axis. Especially this one The shape of the helix axis ensures an even charge carrier emission of the coil body.
- the Helix body at least one end section, which is connected to a helix adjacent and having an end section axis, the adjacent Helix end at least one helix end section between the Has end portion and the connection area, the at least a spiral end portion has a course that is at each point has a non-zero directional component that is perpendicular to the end portion axis is arranged.
- This embodiment of the invention is particularly advantageous if the at least one helical end section the entire area of the helix between the end section and occupies the connection area and when the coil body has a straight spiral axis or is only slightly curved. Then namely emitter, which is located on the at least one helical end section located, directed towards the coil body, and one The formation of drops on the spiral end can be avoided.
- the at least one helical end section can be essentially vertical to the end section axis.
- a triple spiral electrode in particular, can be used as the spiral electrode Double spiral electrode or a rod spiral electrode can be used.
- the above task is also accomplished by using a low pressure discharge lamp solved at least one spiral electrode according to the invention.
- the spiral electrode can be connected to the two connection areas two power supply sections by clamping or by welding be connected.
- the spiral electrode is either in a switched-on state of the low-pressure discharge lamp or in a switched-off state of the low-pressure discharge lamp voltage-free connected to the two power supply sections.
- the spiral electrode according to the invention is particularly suitable for use in low pressure discharge lamps that have an inner bulb diameter of less than 8 mm, in particular of 6 mm.
- FIG. 2 shows a first embodiment of a spiral electrode according to the invention 10 is shown schematically, the two spiral endings 12 and one Has helical body 16 with a straight helical axis 14.
- the spiral endings 12 are at connection areas 18 Welding or clamping connected to power supply sections 20.
- the entire Coil body 16 immersed in a paste of emitter 22 the emitter 22, as indicated in Fig. 2, adheres to the coil body.
- the connection areas 18 and thus also the power supply sections 20 remain free of emitter 22, so that a perfect formation can be carried out.
- the spiral electrode 10 is like this connected to the power supply sections 20 that they at least in is stored in a voltage-free state in a non-current-carrying state.
- FIG. 3 shows a second embodiment of the spiral electrode according to the invention 10, which also has a helical body 16 with a straight Includes coil axis 14 and two coil ends 12. Indeed are the spiral endings 12 in this embodiment not as in the first embodiment arranged at right angles to the helix axis 14. But This course of the spiral ends 12 also leads to the spiral ends 12 located emitter 22 in the direction of the spiral body 16 flows. The greater the distance between the connection areas 18 and Helical axis 14, the less likely it is that the power supply sections will be wetted 20 when the emitter 22 by immersing the coil body 16 is applied in a paste of emitter 22.
- This too second embodiment is voltage-free with the power supply sections 20 connected by welding or clamping. tensions thus only occur when the coil electrode 10 is supplied with current becomes. However, the coil electrode 10 can also do so with the power supply sections 20 are connected so that they are only voltage-free is stored when it is supplied with electricity of a certain current becomes.
- FIG. 4 shows a third embodiment of the spiral electrode according to the invention 10 is shown schematically in a state in which it is connected is connected to the power supply sections 20, a curved coil body 16 has.
- This curved coil body 16 comprises two end sections 24 each with an end section axis 26.
- the each on one End section 24 adjacent spiral end 12 has a course that has a directional component at every point that is perpendicular to the respective one End section axis 26 is arranged.
- the helix 16 is only slightly bent, so that the charge carrier emission can be done almost evenly.
- the emitter 22 by a dipping process on the coil body 16 are applied, and located on the spiral ends 12 Emitter 22 can be directed to the coil body 16.
- the spiral electrode according to the invention appears particularly suitable for installation in very small low-pressure discharge lamps, in particular are known as miniature fluorescent lamps (OSRAM FM / T2) because of these Fluorescent lamps the pasting with emitter a particularly large technical Represents problem that is solved by the invention.
- OSRAM FM / T2 miniature fluorescent lamps
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
- Fig. 2
- eine schematische Darstellung einer ersten Ausführungsform einer erfindungsgemäßen Wendelelektrode;
- Fig. 3
- eine schematische Darstellung einer zweiten Ausführungsform einer erfindungsgemäßen Wendelelektrode; und
- Fig. 4
- eine schematische Darstellung einer dritten Ausführungsform einer erfindungsgemäßen Wendelelektrode.
Claims (9)
- Wendelelektrode für eine Niederdruckentladungslampe, wobei die Wendelelektrode (10) einen Wendelkörper (16) und zwei Wendelendungen (12) aufweist, wobei die zwei Wendelendungen (12) jeweils einen Verbindungsbereich (18) aufweisen, an dem sie mit jeweils einem Stromzuführungsabschnitt (20) leitend verbindbar sind, dadurch gekennzeichnet, dass eine zwischen den zwei Verbindungsbereichen (18) der zwei Wendelendungen (12) gebildete Verbindungsstrecke außerhalb des Wendelkörpers (16) liegt.
- Wendelelektrode nach Anspruch 1, dadurch gekennzeichnet, dass der Wendelkörper (16) eine gerade verlaufende Wendelachse (14) aufweist.
- Wendelelektrode nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Wendelkörper (16) mindestens einen Endabschnitt (24) umfasst, der an eine Wendelendung (12) angrenzt und eine Endabschnittachse (26) aufweist, wobei die angrenzende Wendelendung (12) mindestens einen Wendelendungsabschnitt zwischen dem Endabschnitt (24) und dem Verbindungsbereich (18) aufweist, wobei der mindestens eine Wendelendungsabschnitt einen Verlauf aufweist, der an jedem Punkt eine Richtungskomponente ungleich null aufweist, die senkrecht zu der Endabschnittachse (26) angeordnet ist.
- Wendelelektrode nach Anspruch 3, dadurch gekennzeichnet, dass der mindestens eine Wendelendungsabschnitt im wesentlichen senkrecht zu der Endabschnittachse (26) verläuft.
- Wendelelektrode nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Wendelelektrode (10) eine Triplewendelelektrode oder eine Doppelwendelelektrode oder eine Stabwendelelektrode ist.
- Niederdruckentladungslampe mit mindestens einer Wendelelektrode nach einem der Ansprüche 1 bis 5.
- Niederdruckentladungslampe nach Anspruch 6, dadurch gekennzeichnet, dass die Wendelelektrode (10) an den zwei Verbindungsbereichen (18) mit den zwei Stromzuführungsabschnitten (20) durch Klemmung und/oder durch Schweißung verbunden ist.
- Niederdruckentladungslampe nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Wendelelektrode (10) entweder in einem eingeschalteten Zustand der Niederdruckentladungslampe oder in einem ausgeschalteten Zustand der Niederdruckentladungslampe spannungsfrei mit den zwei Stromzuführungsabschnitten (20) verbunden ist.
- Niederdruckentladungslampe nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Niederdruckentladungslampe einen Innenkolbendurchmesser aufweist, der kleiner als 8 mm, insbesondere 6 mm ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20016783U | 2000-09-28 | ||
| DE20016783U DE20016783U1 (de) | 2000-09-28 | 2000-09-28 | Wendelelektrode für eine Leuchtstofflampe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1193732A2 true EP1193732A2 (de) | 2002-04-03 |
| EP1193732A3 EP1193732A3 (de) | 2005-08-03 |
Family
ID=7947065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01119855A Withdrawn EP1193732A3 (de) | 2000-09-28 | 2001-08-16 | Wendelelektrode für eine Leuchtstofflampe und Leuchtstofflampe damit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020036453A1 (de) |
| EP (1) | EP1193732A3 (de) |
| CA (1) | CA2358035A1 (de) |
| DE (1) | DE20016783U1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128643A (zh) * | 2019-05-13 | 2019-08-16 | 张青 | 一种真空转鼓式聚脂固相聚合装置 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306554C (zh) * | 2004-04-20 | 2007-03-21 | 陈宗烈 | 无灯丝热阴极荧光灯 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214974A (en) * | 1938-10-04 | 1940-09-17 | Gen Electric | Electrode for electric discharge devices |
| US2283216A (en) * | 1941-07-19 | 1942-05-19 | Hygrade Sylvania Corp | Cathode for discharge tubes |
| GB931059A (en) * | 1961-02-10 | 1963-07-10 | Thorn Electrical Ind Ltd | Improvements in and relating to thermionic cathodes |
| NL179854C (nl) * | 1977-08-23 | 1986-11-17 | Philips Nv | Lagedrukkwikdampontladingslamp. |
| CH623957A5 (en) * | 1977-10-31 | 1981-06-30 | Bbc Brown Boveri & Cie | Device for producing ultraviolet radiation, especially a low-pressure gas-discharge lamp |
| NL189324C (nl) * | 1983-03-03 | 1993-03-01 | Philips Nv | Halogeengloeilamp. |
| JPH0685310B2 (ja) * | 1985-11-29 | 1994-10-26 | 東芝ライテック株式会社 | 蛍光ランプ |
| US4893050A (en) * | 1988-08-22 | 1990-01-09 | Gte Products Corporation | Lamp with a captured reflector and method of manufacture |
| US5508587A (en) * | 1992-11-13 | 1996-04-16 | Williams; Ronald R. | Incandescent lamp use with an optical fiber |
| EP1341208A3 (de) * | 1997-06-11 | 2009-08-05 | Toshiba Lighting & Technology Corporation | Kompakte leuchtstofflampe mit eigenem Vorschaltgerät und Leuchte damit |
| US6465939B1 (en) * | 1999-12-02 | 2002-10-15 | Lcd Lighting, Inc. | Robust lamp filament |
| SE515637C2 (sv) * | 2000-01-24 | 2001-09-17 | Auralight Ab | Säkerhetskonstruktion för lysrör |
-
2000
- 2000-09-28 DE DE20016783U patent/DE20016783U1/de not_active Expired - Lifetime
-
2001
- 2001-08-16 EP EP01119855A patent/EP1193732A3/de not_active Withdrawn
- 2001-09-26 US US09/962,348 patent/US20020036453A1/en not_active Abandoned
- 2001-09-27 CA CA002358035A patent/CA2358035A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128643A (zh) * | 2019-05-13 | 2019-08-16 | 张青 | 一种真空转鼓式聚脂固相聚合装置 |
| CN110128643B (zh) * | 2019-05-13 | 2021-11-12 | 东营海德新材料有限公司 | 一种真空转鼓式聚脂固相聚合装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020036453A1 (en) | 2002-03-28 |
| CA2358035A1 (en) | 2002-03-28 |
| EP1193732A3 (de) | 2005-08-03 |
| DE20016783U1 (de) | 2000-12-14 |
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