WO2008113657A1 - Dielektrische barriere-entladungslampe mit zündhilfe - Google Patents
Dielektrische barriere-entladungslampe mit zündhilfe Download PDFInfo
- Publication number
- WO2008113657A1 WO2008113657A1 PCT/EP2008/052191 EP2008052191W WO2008113657A1 WO 2008113657 A1 WO2008113657 A1 WO 2008113657A1 EP 2008052191 W EP2008052191 W EP 2008052191W WO 2008113657 A1 WO2008113657 A1 WO 2008113657A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dielectric barrier
- ignition
- discharge lamp
- barrier discharge
- pump tube
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps 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
- H01J65/042—Lamps 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
- H01J65/046—Lamps 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 capacitive means around the vessel
Definitions
- the invention is based on an electric barrier discharge lamp.
- dielectric barrier discharge lamps are office automation, in particular linear lamps for scanners, fax machines and similar devices, and large flat lamps, so-called flat radiators, for backlighting monitors and television screens in liquid crystal technology and other graphic displays.
- the invention is not limited to these fields of application. Rather, there are other areas of application, such as in the UV treatment in trade and industry, in general lighting, in lighting design, etc.
- Dielectric barrier discharge lamps are known per se and have now been extensively documented in the prior art. They are distinguished by the fact that the electrodes are separated by a dielectric from the discharge medium located in the interior of the discharge vessel, typically a noble gas such as xenon or a noble gas mixture.
- the electrodes may be arranged either all inside, all outside or the electrode (s) of one polarity inside and the other outside the discharge vessel.
- the wall of the discharge vessel acts as a dielectric Barrier. If all the electrodes are arranged inside the discharge vessel, however, at least one electrode or the electrodes of one polarity must be separated from the interior of the discharge vessel by a dielectric, for example by a dielectric coating.
- this dielectric barrier causes a so-called dielectrically impeded discharge on one side.
- all internal electrodes may also be provided with a dielectric coating. Then it is a dielectrically impeded discharge on both sides. The latter applies in particular to the already mentioned case in that all the electrodes are arranged outside the discharge vessel.
- a time-varying voltage for example a sinusoidal alternating voltage
- US Pat. No. 5,604,410 has proven particularly efficient.
- a bar-shaped dielectric barrier discharge lamp which comprises an ignition aid integrated in the pump tube.
- an ignition aid integrated in the pump tube.
- two elongate ignition electrodes are arranged along the outside of the pump tube, and within the pump tube a metallic structure, in particular an ignition coating, is arranged centrally between the two ignition electrodes.
- the object of the present invention is to provide a dielectric barrier discharge lamp with improved ignition properties.
- a dielectric barrier discharge lamp having an anode and a cathode, a discharge vessel with a pump tube, at least one ignition electrode, which is arranged along the outside of the pump tube, a Zündbelag, which is arranged in the inner side of the pump tube, characterized in that the Zündbelag is arranged centrally above the ignition electrode and this ignition electrode is connected to the cathode.
- the Zündbelag is not simply located centrally between the two ignition electrodes, as disclosed in the prior art, but is arranged centrally above an ignition electrode and also
- this ignition electrode is connected to the cathode or the electrode, which at least temporarily acts as a cathode, at least during the ignition phase.
- the Zündbelag is considered in the cross section of the pump tube viewed as a semicircle.
- the Zündbelag is triangular.
- the triangular ignition lining is preferably aligned such that one of the three corners of the ignition coating points away from the interior of the discharge vessel in the direction of the melting point of the pumping tube.
- the two other corners of the triangular Zündbelags point in the direction of the anode, which apparently the achievable during the ignition electric field strength is increased.
- it is crucial that the ignition lining has an angular shape and that at least one corner points in the direction of the anode.
- the Zündbelag is made of a material having the highest possible secondary electron emission coefficient, in particular metal, for example silver.
- the special arrangement of ignition electrode its negative electric po-
- the field emission of E- electrodes from the Zündbelag particularly favored.
- a further ignition electrode is mounted along the pump tube with respect to the first ignition electrode.
- This second ignition electrode is connected to a positive electrical polarity at least during the ignition phase.
- the free electrons are accelerated from the ignition in the direction of positive ignition and initiated an auxiliary discharge in the pump tube.
- This auxiliary discharge triggers the actual main discharge in the interior of the discharge vessel between the dielectrically impeded (main) electrodes.
- the invention also relates to a method for igniting a dielectric discharge lamp having two electrodes, a discharge vessel having a pump tube, at least one ignition electrode, which is arranged along the outside of the pump tube, a Zündbelag, which is arranged in the inside of the pump tube, wherein the Zündbelag is arranged centrally above the ignition electrode and the process steps that the electrodes of the dielectric barrier discharge lamp are connected by means of connecting cable with a designed for the generation of high voltage pulses electrical Medounce, and that the electrical polarity and control for the production the high voltage pulses such in that the electrode which is connected to the ignition electrode arranged centrally above the ignition coating acts as a cathode at least during an ignition phase of the lamp.
- FIG. 1 a shows a dielectric barrier discharge lamp according to the invention in a partial longitudinal section
- FIG. 1b shows the lamp from FIG. 1a in a cross-sectional view along the line AA, FIG.
- FIG. 2 shows an inventive illumination system with the lamp of Fig. Ia
- Fig. 3 is a schematic envelope representation of high voltage pulses for the ignition and Berieb the lamp of Fig. Ia.
- Figures Ia and Ib show a partial longitudinal section and a cross section along the line AA of an embodiment of the invention in a schematic representation. It is an elongated, dielectric barrier discharge lamp 1, which is intended in particular for use in devices for office automation.
- the dielectric barrier discharge lamp 1 consists essentially of a tubular discharge vessel 2 with a circular cross section (only partially shown in FIG. provided), two strip-shaped main inner electrodes 3, 4, which are each covered with a dielectric barrier 5, for example a glass solder strip, two U-shaped outer auxiliary electrodes 6, 7 and two electrical supply cables 8, 9, for the connection of a electrical supply device (not shown in Fig. Ia) are provided.
- the strip-shaped main electrodes 3, 4 are arranged diametrically opposite one another on the inside of the tubular discharge vessel 2.
- the basic principle of such dielectric barrier discharge lamps with inner main electrodes is explained in detail in the document US Pat. No. 6,097,155, in particular in conjunction with the figures Ia, Ib and 2 there.
- the tubular discharge vessel 2 is closed in a gas-tight manner at its first end by means of a plate melting with a blown pump tube 10. At its other end, the tubular discharge vessel 2 is closed in the shape of a dome (not shown in FIG. 1 a). Inside the discharge vessel 2 is xenon with a filling pressure of about 15 kilo Pascal (kPa). The strip-shaped main electrodes 3, 4 are guided through the plate melt to the outside. For this purpose, the discharge tube has a section 11 projecting beyond the plate melt.
- a respective first leg of the U-shaped auxiliary electrodes 6, 7 is connected to the electrical supply cables 8, 9.
- the respective other leg of the U-shaped auxiliary electrodes 6, 7 touches the outside of the melted pump tube 10th
- the two U-shaped auxiliary electrodes 6, 7 are arranged in the intermediate space between the pump tube 10 and the adjacent inner side of the surrounding discharge tube section 11 diametrically opposite one another.
- the gap is filled with a silicone rubber 12 for electrical insulation. This may also be waived if less stringent requirements for the insulation.
- a semi-circular in cross-section Zündbelag 13 arranged silver solder (see Fig. Ib).
- the ignition coating 13 When viewed in longitudinal section, the ignition coating 13 has a triangular shape, with the base of the triangle in the circumferential direction of the pump tube 10 and the tip pointing away from the interior of the discharge vessel and towards the melted end of the pump tube.
- the one auxiliary electrode 7, over which the ignition lining 13 is arranged centrally is provided as a cathode, ie at least temporarily connected to a negative electrical potential during a preferably pulsed ignition phase.
- FIG. 2 shows schematically an illumination system according to the invention. It consists essentially of the inventive dielectric barrier discharge lamp 1 of Fig. Ia, Ib and designed for the pulse operation electrical supply device 14.
- the other auxiliary electrode 6 is connected via the other connecting cable 8 to the positive pole 16 of the supply device 14. This ensures that the first auxiliary electrode 7, at least during the ignition phase of the lamp 1 assumes a pulse-like negative electrical potential with respect to the other auxiliary electrode 6.
- the field emission of electrons from the Zündbelag is favored.
- the free electrons generated by the field emission from the ignition coating are then accelerated to the positive other auxiliary electrode 6 and thus start an auxiliary discharge in the pump tube.
- the auxiliary discharge then triggers the actual main discharge within the discharge vessel 2 between the main electrodes 3, 4.
- FIG. 3 shows a schematic representation of the envelope 17 of high voltage pulses for the ignition and Berieb the lamp 1 of Fig. Ia, as for example, from the electrical operating device 14 shown in FIG. 2 at the output terminals 15, 16 are generated (the envelope is shown positively here for the sake of clarity).
- the envelope 17 can be subdivided into four phases in which the amplitudes of the high-voltage pulses are different.
- phase I the so-called boost phase
- the break phase II in which the amplitude is zero during the time period T 0 , ie no high-voltage pulses are generated.
- T GeSa m t T B + T 0 + T R
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800084300A CN101632149B (zh) | 2007-03-22 | 2008-02-22 | 带有点燃辅助装置的介电阻挡放电灯 |
US12/532,162 US20100026199A1 (en) | 2007-03-22 | 2008-02-22 | Dielectric barrier discharge lamp with starting aid |
DE112008000282T DE112008000282A5 (de) | 2007-03-22 | 2008-02-22 | Dielektrische Barriere-Entladungslampe mit Zündhilfe |
JP2009553988A JP2010521789A (ja) | 2007-03-22 | 2008-02-22 | 点弧補助手段を備えた誘電体バリア放電灯 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007004236.1 | 2007-03-22 | ||
DE202007004236U DE202007004236U1 (de) | 2007-03-22 | 2007-03-22 | Dielektrische Barriere-Entladungslampe mit Zündhilfe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008113657A1 true WO2008113657A1 (de) | 2008-09-25 |
Family
ID=38190453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/052191 WO2008113657A1 (de) | 2007-03-22 | 2008-02-22 | Dielektrische barriere-entladungslampe mit zündhilfe |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100026199A1 (de) |
JP (1) | JP2010521789A (de) |
KR (1) | KR20090122488A (de) |
CN (1) | CN101632149B (de) |
DE (2) | DE202007004236U1 (de) |
TW (1) | TW200903567A (de) |
WO (1) | WO2008113657A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015103574A1 (en) * | 2014-01-06 | 2015-07-09 | Iowa Approach Inc. | Apparatus and methods for renal denervation ablation |
JP6800678B2 (ja) * | 2016-09-29 | 2020-12-16 | 株式会社オーク製作所 | 放電ランプおよび放電ランプ装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5604410A (en) * | 1993-04-05 | 1997-02-18 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | Method to operate an incoherently emitting radiation source having at least one dielectrically impeded electrode |
US6097155A (en) * | 1997-04-30 | 2000-08-01 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Fluorescent lamp |
EP1329944A2 (de) * | 2001-12-14 | 2003-07-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dielektrisch behinderte Entladungslampe mit einer Zündhilfe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10275601A (ja) * | 1997-03-28 | 1998-10-13 | Toshiba Lighting & Technol Corp | 誘電体バリヤ放電ランプおよび誘電体バリヤ放電ランプ装置 |
WO1999005892A1 (de) * | 1997-07-22 | 1999-02-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Verfahren zum erzeugen von impulsspannungsfolgen und zugehörige schaltungsanordnung |
JP3458757B2 (ja) * | 1999-03-30 | 2003-10-20 | ウシオ電機株式会社 | 誘電体バリア放電ランプ装置 |
JP4132474B2 (ja) * | 1999-09-30 | 2008-08-13 | ハリソン東芝ライティング株式会社 | 希ガス放電ランプおよび照明装置 |
DE10048986A1 (de) * | 2000-09-27 | 2002-04-11 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielektrische Barrieren-Entladungslampe |
JP2002279889A (ja) * | 2001-03-21 | 2002-09-27 | Harison Toshiba Lighting Corp | 放電ランプおよび照明装置 |
EP1328007A1 (de) * | 2001-12-14 | 2003-07-16 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dielectric barrier discharge lamp with starting aid |
US7863816B2 (en) * | 2003-10-23 | 2011-01-04 | General Electric Company | Dielectric barrier discharge lamp |
-
2007
- 2007-03-22 DE DE202007004236U patent/DE202007004236U1/de not_active Expired - Lifetime
-
2008
- 2008-02-22 US US12/532,162 patent/US20100026199A1/en not_active Abandoned
- 2008-02-22 DE DE112008000282T patent/DE112008000282A5/de not_active Withdrawn
- 2008-02-22 WO PCT/EP2008/052191 patent/WO2008113657A1/de active Application Filing
- 2008-02-22 CN CN2008800084300A patent/CN101632149B/zh not_active Expired - Fee Related
- 2008-02-22 JP JP2009553988A patent/JP2010521789A/ja active Pending
- 2008-02-22 KR KR1020097022106A patent/KR20090122488A/ko active IP Right Grant
- 2008-03-20 TW TW097109764A patent/TW200903567A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5604410A (en) * | 1993-04-05 | 1997-02-18 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | Method to operate an incoherently emitting radiation source having at least one dielectrically impeded electrode |
US6097155A (en) * | 1997-04-30 | 2000-08-01 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Fluorescent lamp |
EP1329944A2 (de) * | 2001-12-14 | 2003-07-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dielektrisch behinderte Entladungslampe mit einer Zündhilfe |
Also Published As
Publication number | Publication date |
---|---|
CN101632149A (zh) | 2010-01-20 |
KR20090122488A (ko) | 2009-11-30 |
TW200903567A (en) | 2009-01-16 |
US20100026199A1 (en) | 2010-02-04 |
CN101632149B (zh) | 2011-08-31 |
DE202007004236U1 (de) | 2007-06-14 |
JP2010521789A (ja) | 2010-06-24 |
DE112008000282A5 (de) | 2010-01-28 |
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