EP0901687A1 - Flachstrahler - Google Patents
FlachstrahlerInfo
- Publication number
- EP0901687A1 EP0901687A1 EP98925420A EP98925420A EP0901687A1 EP 0901687 A1 EP0901687 A1 EP 0901687A1 EP 98925420 A EP98925420 A EP 98925420A EP 98925420 A EP98925420 A EP 98925420A EP 0901687 A1 EP0901687 A1 EP 0901687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anodes
- region
- anode
- flat radiator
- discharge vessel
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/305—Flat vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/92—Lamps with more than one main discharge path
-
- 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 a flat radiator according to the preamble of claim 1.
- radiators such as disclosed in EP 0 363 832 and in DE-OS 195 26 211.
- Such radiators have at least one electrode separated from the discharge space of the radiator by dielectric material.
- Such electrodes are also referred to in the following as "dielectric electrodes”.
- flat radiator here means radiators with a flat geometry that emit light, i.e. visible electromagnetic radiation, or also ultraviolet (UV) and vacuum ultraviolet (VUV) radiation.
- UV ultraviolet
- VUV vacuum ultraviolet
- such radiation sources are suitable for general and auxiliary lighting, for example residential and office lighting or backlighting of displays, for example LCDs (Liquid Crystal Displays), for traffic and signal lighting, for UN radiation, eg disinfection or photolytics.
- LCDs Liquid Crystal Displays
- UN radiation eg disinfection or photolytics.
- EP 0 363 832 discloses a UV high-power radiator with elongated electrodes connected in pairs to the two poles of a high-voltage source.
- the electrodes are separated from one another and from the discharge space of the radiator by dielectric material.
- the elongated electrodes with different polarities are arranged alternately next to one another, which enables flat-type discharge configurations with relatively flat discharge vessels to be implemented.
- WO 94/23442 discloses a method for operating an incoherently emitting radiation source, in particular a discharge lamp, by means of dielectrically impeded discharge.
- the operating method provides a sequence of active power pulses, the individual active power pulses being separated from one another by dead times.
- unipolar pulses a large number of individual delta-shaped discharges are formed, lined up along the elongated electrodes.
- the advantage of this pulsed mode of operation is the high efficiency of the radiation generation.
- the invention proposes the separation of those anodes which are adjacent to two cathodes directly at the same distance into two anodes each. In other words, an additional anode is arranged between each such pair of cathodes.
- FIGS. 1 and 2 A section of a conventional flat radiator according to the invention and a conventional flat radiator are shown schematically.
- the lengths of the electrodes are approximately limited to the extent of a delta-shaped individual discharge.
- the electrodes are typically significantly longer, so that a plurality of individual discharges burns along the electrodes during operation.
- the length of the electrodes does not play a decisive role in explaining the principle of the invention.
- Figures 1 and 2 represent the basic relationships per unit length of the electrodes.
- each anode A ,, A ' is at most one cathode K or K ⁇ + , immediately adjacent.
- FIG. 2 shows only one of several possible discharge structures.
- each anode pair A_, A ' is smaller than the distance between the respective anode A_ or A' and the immediately adjacent cathode K or K 1 + r.
- a good value for the mutual distance is the approximate width of the anode strips.
- the two anodes A,, A ' are designed as a fork-shaped double anode.
- the double anode has an elongated first and second region, which are at a predetermined distance are arranged to each other. The first and the second area are connected to one another by a third area.
- FIG. 1 shows a schematic representation of the principle of the invention
- FIG. 2 shows a schematic representation of the principle of the prior art
- FIG. 3a shows a schematic representation of the top view of an exemplary embodiment of a flat radiator according to the invention
- Figure 3b is a schematic representation of the cross section of the flat radiator from Figure 3a.
- FIGS. 3a, 3b show a schematic representation of a top view or the cross section along the line BB of a UV / VUV flat radiator 4, ie a flat “discharge lamp”, which is designed for the efficient emission of UV or VUV radiation
- the flat radiator 4 consists of a flat discharge vessel 5 with a rectangular base area, four strip-shaped metallic cathodes 6 (-) and three elongated, fork-shaped double anodes 7 (+)
- the bottom plate 8 and the cover 9 are connected to one another in a gastight manner in the region of their peripheral edges and thus enclose the gas filling of the flat radiator 4.
- the gas filling consists of xenon with a filling pressure of 10 kPa
- Double anodes 7 each consist of two mutually parallel strips 7a, 7b, which on their one End are merged into a common wide strip 7c.
- the cathodes 6 and double anodes 7 are applied parallel to one another on the inner wall of the base plate 8.
- the wide end strips 7c of the double anodes 7 and the ends of the cathodes 6 are passed gas-tight out of the discharge vessel 5 and serve there as connections for a voltage source.
- the double anodes 7 within the discharge vessel 5 are each completely covered with a glass layer 10, the thickness of which is approximately 150 ⁇ m.
- the respective distance d between cathode 6 and the immediately adjacent strip 7a or 7b of the double anode 7 is approximately 10 mm.
- the mutual distance g of the two parallel strips 7a, 7b is approximately 3 mm.
- a large number of individual discharges (not shown in FIGS. 3a, 3b) form during operation. These individual discharges burn between the respective cathode 6 and the corresponding immediately adjacent strip 7a or 7b of the associated double anode 7.
- the gain in power density that can be coupled in is almost 75% in comparison to arrangements previously used without a double anode (and the same geometrical dimensions of the discharge vessel). .
- a variant differs from the flat radiator shown in FIGS. 3a, 3b only in that not only the anodes but also the cathodes are separated from the inside of the discharge vessel by a dielectric layer (discharge which is dielectrically impeded on both sides).
- the inner wall of the discharge vessel is completely coated with a phosphor or phosphor mixture, which converts the UV / VUV radiation generated by the discharge into visible light.
- a light-reflecting layer of Al 2 O a or TiO z is applied to the inner wall of the base plate. They serve to increase the luminance on the top side of the spotlight.
- This variant is a flat fluorescent lamp that is suitable for general lighting or backlighting of displays, eg LCD (Liquid Crystal Display).
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19711892A DE19711892A1 (de) | 1997-03-21 | 1997-03-21 | Flachstrahler |
DE19711892 | 1997-03-21 | ||
PCT/DE1998/000829 WO1998043279A1 (de) | 1997-03-21 | 1998-03-20 | Flachstrahler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0901687A1 true EP0901687A1 (de) | 1999-03-17 |
EP0901687B1 EP0901687B1 (de) | 2002-06-26 |
Family
ID=7824179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98925420A Expired - Lifetime EP0901687B1 (de) | 1997-03-21 | 1998-03-20 | Flachstrahler |
Country Status (12)
Country | Link |
---|---|
US (1) | US6222317B1 (de) |
EP (1) | EP0901687B1 (de) |
JP (1) | JP3037441B2 (de) |
KR (1) | KR100281343B1 (de) |
CN (1) | CN1165958C (de) |
CA (1) | CA2255758C (de) |
DE (2) | DE19711892A1 (de) |
DK (1) | DK0901687T3 (de) |
ES (1) | ES2179503T3 (de) |
HU (1) | HU223172B1 (de) |
TW (1) | TW412772B (de) |
WO (1) | WO1998043279A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19817478B4 (de) | 1998-04-20 | 2004-03-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Flache Entladungslampe und Verfahren zu ihrer Herstellung |
DE19826809A1 (de) * | 1998-06-16 | 1999-12-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielektrische Schicht für Entladungslampen und zugehöriges Herstellungsverfahren |
DE19844720A1 (de) * | 1998-09-29 | 2000-04-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dimmbare Entladungslampe für dielektrisch behinderte Entladungen |
DE19919363A1 (de) * | 1999-04-28 | 2000-11-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Entladungslampe mit Abstandshalter |
DE19936865A1 (de) | 1999-08-05 | 2001-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Gasentladungslampe und zugehöriges Herstellungsverfahren |
DE19936864A1 (de) * | 1999-08-05 | 2001-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Einsetzen eines Pumpstengels in ein Entladungsgefäß |
DE19936863A1 (de) * | 1999-08-05 | 2001-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Herstellungsverfahren für eine Gasentladungslampe |
US7146290B2 (en) * | 2000-11-27 | 2006-12-05 | Uview Ultraviolet Systems, Inc. | Apparatus and method for diagnosing performance of air-conditioning systems |
KR100741898B1 (ko) * | 2000-12-22 | 2007-07-24 | 엘지.필립스 엘시디 주식회사 | 평판형 형광램프 및 그 제조방법 |
DE10134965A1 (de) * | 2001-07-23 | 2003-02-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Flache Entladungslampe |
KR100456658B1 (ko) * | 2002-04-29 | 2004-11-10 | 주식회사 엘에스텍 | 면광원 장치 |
KR100650491B1 (ko) * | 2004-02-27 | 2006-11-27 | 유양산전 주식회사 | 평판형 형광램프 |
DE102004039902B3 (de) * | 2004-08-17 | 2006-04-06 | Berger Gmbh | Flächige Gasentladungslampe und Verfahren zu ihrer Herstellung |
DE102004055328B3 (de) * | 2004-11-16 | 2006-04-13 | Institut für Niedertemperatur-Plasmaphysik e.V. | Vorrichtung nach dem Prinzip einer dielektrisch behinderten Entladung zur Strahlungserzeugung |
TW200636337A (en) * | 2005-04-04 | 2006-10-16 | Delta Optoelectronics Inc | Electrode structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH676168A5 (de) | 1988-10-10 | 1990-12-14 | Asea Brown Boveri | |
US5343116A (en) * | 1992-12-14 | 1994-08-30 | Winsor Mark D | Planar fluorescent lamp having a serpentine chamber and sidewall electrodes |
DE4311197A1 (de) | 1993-04-05 | 1994-10-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Betreiben einer inkohärent strahlenden Lichtquelle |
US5479069A (en) * | 1994-02-18 | 1995-12-26 | Winsor Corporation | Planar fluorescent lamp with metal body and serpentine channel |
KR200171939Y1 (ko) * | 1994-10-25 | 2000-03-02 | 손욱 | 면광원장치 |
DE19526211A1 (de) * | 1995-07-18 | 1997-01-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Betreiben von Entladungslampen bzw. -strahler |
DE59810890D1 (de) * | 1997-03-21 | 2004-04-08 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Flachleuchtstofflampe für die hintergrundbeleuchtung und flüssigkristallanzeige-vorrichtung mit dieser flachleuchtstofflampe |
-
1997
- 1997-03-21 DE DE19711892A patent/DE19711892A1/de not_active Withdrawn
-
1998
- 1998-03-20 CA CA002255758A patent/CA2255758C/en not_active Expired - Fee Related
- 1998-03-20 CN CNB988003244A patent/CN1165958C/zh not_active Expired - Fee Related
- 1998-03-20 EP EP98925420A patent/EP0901687B1/de not_active Expired - Lifetime
- 1998-03-20 ES ES98925420T patent/ES2179503T3/es not_active Expired - Lifetime
- 1998-03-20 TW TW087104178A patent/TW412772B/zh active
- 1998-03-20 HU HU0000626A patent/HU223172B1/hu not_active IP Right Cessation
- 1998-03-20 JP JP10544686A patent/JP3037441B2/ja not_active Expired - Fee Related
- 1998-03-20 KR KR1019980709334A patent/KR100281343B1/ko not_active IP Right Cessation
- 1998-03-20 WO PCT/DE1998/000829 patent/WO1998043279A1/de active IP Right Grant
- 1998-03-20 DE DE59804564T patent/DE59804564D1/de not_active Expired - Lifetime
- 1998-03-20 US US09/180,860 patent/US6222317B1/en not_active Expired - Lifetime
- 1998-03-20 DK DK98925420T patent/DK0901687T3/da active
Non-Patent Citations (1)
Title |
---|
See references of WO9843279A1 * |
Also Published As
Publication number | Publication date |
---|---|
HUP0000626A3 (en) | 2003-02-28 |
US6222317B1 (en) | 2001-04-24 |
TW412772B (en) | 2000-11-21 |
CN1165958C (zh) | 2004-09-08 |
HUP0000626A2 (hu) | 2000-06-28 |
EP0901687B1 (de) | 2002-06-26 |
JPH11514148A (ja) | 1999-11-30 |
DE59804564D1 (de) | 2002-08-01 |
KR20000015786A (ko) | 2000-03-15 |
CN1220769A (zh) | 1999-06-23 |
JP3037441B2 (ja) | 2000-04-24 |
CA2255758C (en) | 2006-01-24 |
WO1998043279A1 (de) | 1998-10-01 |
CA2255758A1 (en) | 1998-10-01 |
DK0901687T3 (da) | 2002-08-19 |
HU223172B1 (hu) | 2004-03-29 |
KR100281343B1 (ko) | 2001-03-02 |
DE19711892A1 (de) | 1998-09-24 |
ES2179503T3 (es) | 2003-01-16 |
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