EP0995224B1 - Lampe luminescente a gaz avec groupes d'electrodes actionnables separement - Google Patents

Lampe luminescente a gaz avec groupes d'electrodes actionnables separement Download PDF

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Publication number
EP0995224B1
EP0995224B1 EP98966304A EP98966304A EP0995224B1 EP 0995224 B1 EP0995224 B1 EP 0995224B1 EP 98966304 A EP98966304 A EP 98966304A EP 98966304 A EP98966304 A EP 98966304A EP 0995224 B1 EP0995224 B1 EP 0995224B1
Authority
EP
European Patent Office
Prior art keywords
gas
discharge lamp
groups
electrodes
electrode
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.)
Expired - Lifetime
Application number
EP98966304A
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German (de)
English (en)
Other versions
EP0995224A1 (fr
Inventor
Frank Vollkommer
Lothar Hitzschke
Simon Jerebic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to EP98966304A priority Critical patent/EP0995224B1/fr
Publication of EP0995224A1 publication Critical patent/EP0995224A1/fr
Application granted granted Critical
Publication of EP0995224B1 publication Critical patent/EP0995224B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Definitions

  • This invention relates to gas discharge lamps. It affects them Specialty of gas discharge lamps for dielectric barrier discharges, d. H. So gas discharge lamps in which the electrodes, at least however, the anodes, with a dielectric layer from the gas filling are separated for discharge.
  • Such gas discharge lamps for dielectrically impeded discharges are has become the subject of increased attention in the recent past, because they can show different technical characteristics that they especially as a flat spotlight for backlighting liquid crystal screens make it seem appropriate.
  • the present invention relates not primarily on this area of application and is also not on Flat radiator restricted.
  • gas discharge lamps have dielectric disabled discharges over electrode assemblies with a variety of electrodes for generating a large number of spatially distributed partial discharges.
  • flat spotlights for example, one is possible uniform backlighting of an extensive area.
  • EP-A-0766286 shows tubular discharge lamps with separated operable pairs of electrodes, each separate surface areas assigned.
  • US-A-5479071 shows display devices with antenna groups for activating discharges in different Discharge spaces that correspond to the letters to be displayed.
  • This invention is based on the technical problem of gas discharge lamps for dielectrically disabled discharges with a view to extended To further develop applications and uses.
  • a gas discharge lamp with a discharge vessel filled with a gas filling with a Large number of electrodes that can be operated in independently operated groups switchable operation are divided, and with a dielectric layer between at least one anode part of the electrodes and the gas filling, characterized in that the electrodes of different separately operable Electrode groups are interleaved around in the same luminous area, independent discharge structures to be able to generate, so that the same luminous area optionally using one or more of the electrode groups can be illuminated.
  • the invention is based on a plurality of electrodes in a gas discharge lamp for dielectrically disabled discharges the electrodes in to divide groups that can be operated separately, that is to say part of the anodes and / or part of the cathodes can be electrically controlled separately make and likewise the other or a further part of the cathodes and / or anodes in the same way, but independently of the first part, make electrically controllable.
  • each of the electrode groups is largely one uniform backlighting of the illuminated surface can cause.
  • a function similar to a dimming function can be realized by operating individual electrode groups different performance or certain combinations of Electrode groups have the same luminous area with different luminances appears.
  • a (discrete) brightness gradation is without the circuitry complexity of a dimming function possible.
  • the division into groups can result from the electrical separation of cathodes or anodes or from an interaction of an electrical Separation of the cathodes and one of the anodes result.
  • anode and cathode are otherwise not to be understood as restricting unipolar operation.
  • bipolar operation of the electrodes between anodes and cathodes, so that respective statements for anodes or In the bipolar case, cathodes apply to both "types of electrodes".
  • the invention preferably relates to so-called flat radiators.
  • a discharge volume is formed from not necessarily flat in the Meaning of straight, but flat and largely flat plates, for example made of glass, with the electrode structures on one or both glass plates are made. Due to the electrode distribution on a large area and possibly by using additional diffuser layers, large areas can be created realize flat lamps with very even light distribution.
  • a Flat light generation is an essential in many applications Point of view. It can be about an area of certain extent to backlight or a certain light output on a surface distribute to reduce glare. A flat design can also be used for aesthetic reasons or to reduce the Shadow formation is important.
  • the invention can do essentials in such flat radiator applications Be an advantage, especially if according to a preferred Embodiment also the groups to be operated independently correspond to different illuminated areas. Then consequently they are To operate illuminated areas independently of one another, the illuminated areas nevertheless to the same gas discharge lamp, in particular to belong to the same discharge vessel. Examples are billboards where different graphic elements are operated independently of each other, z. B. partly flashing and partly continuously lit.
  • signal lamps their different graphic Elements correspond to the electrically separated groups.
  • The can Increase in conspicuity play a role, as also with those already mentioned Advertising space. But it can also be about symbolizing certain Content of meaning goes through, for example, successive activation different illuminated areas, the continuous arrow movement symbolize or the like.
  • Another possibility is the use different, alternatively selectable illuminated areas with different Content of meaning for adapting the meaning of one and the same signal lamp to different situations.
  • Preferred forms for such a coordinated electrode geometry are circular, circle segment, surfaces in the form of a ring or a segment of a ring. They occur in many analog displays on. Reference is also made to the second example.
  • Another possible application for spatially separated electrode groups is through special optical foils or similar devices the separate illuminated areas of the electrode groups have different radiation directions or at least to give directions, so that overall by switching operation between the electrode groups the radiation properties of the lamp also in the direction can be changed.
  • the invention also relates to an interior lamp in which the Advantages of the invention on the one hand for aesthetic reasons or on the other hand can be used to regulate the luminance.
  • FIG Discharge volume that of two lying flat in the drawing plane Glass plates and a seal running along the drawn edge is included.
  • the glass plates protrude in the lower part of the figure with an approach labeled 3 beyond the discharge volume 1.
  • On the right is the one used for evacuation and filling Pump nozzle (in the closed state) shown.
  • 2 are the electrodes printed on one of the plates, where Cathodes and anodes run alternately, but in the figure are not differentiated because they have no qualitative differences and in bipolar operation the roles are no longer separate.
  • the electrodes 2 lie in the discharge volume for most of their length 1 and are located on the outside of the discharge volume 1 Part in the area of approach 3 to the supply circuit and automotive electrics connected.
  • the electrodes 2 are in three spatially separate groups 2a, 2b and 2c before, each corresponding to certain display units or content.
  • the left group 2a corresponds to an analog instrument for speed display and leads from their leading to Approach 3 straight section apart, the circular ring segment of this analog instrument to.
  • group 2c two instruments are combined, namely a tank level indicator and a cooling water thermometer.
  • the invention is in contrast for the conventional use of curved fluorescent lamps or several light bulbs through a technically simple and rationally producible Structure and one exactly to the design of the display device adapted distribution of the surface luminance. With that improves energy efficiency and ergonomics. Beyond that Flat radiators with dielectric impedance discharge also particularly advantageous, because they have high switching stability and vibration resistance have and in their lifespan basically only by the stability of the used phosphors ("maintenance") are limited. These advantages are particularly important for motorized means of transport where the Effort to repair or replace is high and a failure of one Display device or its lighting especially for safety reasons is unfavorable.
  • the geometry of the flat radiators can also be advantageous, which, as is clear in this example, is particularly good in shape and size the place of use or installation can be adapted.
  • there the use of simple flat radiator housing shapes is nevertheless permitted, in the present example, the outer shape of the discharge volume 1 inclusive of approach 3 instead of the complicated circular ring segments Fittings.
  • the flatness is also given the limited space in a dashboard, cockpit, etc. is an advantage. The same applies to that light weight.
  • Figure 2 shows an interior lamp consisting of a Lamp with three light surfaces 14a, 14b, 14c, the inner surface of a frame Fill in 11.
  • Figure 3 shows the associated electrode structure.
  • the totality the electrode consists of a comb-like anode structure 15 and three comb-like cathode groups 12a, 12b, 12c.
  • the cathode groups and the anodes of the comb-like structure 15 are together nested so that pairs between adjacent cathodes of anode strips. In addition, lie at the two extreme ends individual anode strips.
  • the electrode geometry chosen here is for a unipolar voltage Power pulse coupling aligned.
  • the cathode strips wear nose-like directed towards the sides of the respective adjacent anode strips Projections for the local determination of individual partial discharges, as in DE 196 36 965.7 are described in more detail.
  • an inventive The electrodes cannot be divided into groups that can be operated separately a group-separated electrical connection of both "electrode types" must be given. Rather, in the present case, the entire Number of anodes 15 are connected together and at a constant Reference potential can be laid.
  • the active power coupling pulses already mentioned cf. the cited prior art
  • the common connections of the cathode strips of a group and the Anode strips lie at the end of a bus-like structure outside the discharge vessel delimited by the frame 11.
  • the electrode strips are simply between the frame 11 and one, not shown Bottom or top plate of the discharge vessel carried out, in the same way screen printed as electrode strips run inside the discharge vessel.
  • the second and third examples concern, as already mentioned, an interior light, which are divided into different illuminated areas for decorative reasons which can be switched independently of one another.
  • the gas discharge lamp shown in the second and third examples as advertising space representing a business logo to understand, the individual segments alternating, for example, in a blinking state can be set to the level of abnormality to increase advertising.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Instrument Panels (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Claims (7)

  1. Lampe à décharge dans un gaz comprenant une enceinte de décharge emplie d'une atmosphère gazeuse ayant une pluralité d'électrodes qui sont réparties en groupes pouvant fonctionner séparément pour un fonctionnement en étant branchés indépendamment et une couche diélectrique entre au moins une partie d'anodes des électrodes et l'atmosphère gazeuse, caractérisée en que les électrodes des divers groupes d'électrodes pouvant fonctionner séparément sont emboítées les unes dans les autres pour pouvoir produire dans la même surface lumineuse des structures de décharge indépendantes les unes des autres, de sorte que la même surface lumineuse peut être éclairée à volonté en utilisant l'un des groupes d'électrodes ou une multiplicité des groupes d'électrodes.
  2. Lampe à décharge dans un gaz suivant la revendication 1, dans laquelle les groupes sont répartis en surface et correspondent à diverses surfaces lumineuses à faire fonctionner indépendamment.
  3. Lampe à décharge dans un gaz suivant l'une des revendications précédentes, dans laquelle au moins une partie des électrodes a une géométrie d'électrodes qui n'est pas homogène en surface pour la modulation locale de la luminance de surface.
  4. Lampe d'intérieur ayant une lampe à décharge dans un gaz suivant l'une des revendications précédentes.
  5. Dispositif d'affichage ou dispositif de signalisation optique ayant une lampe de décharge dans un gaz suivant l'une des revendications précédentes, dans lequel les groupes sont associés, respectivement, à des formes de surfaces à éclairer du dispositif d'affichage ou du dispositif de signalisation.
  6. Dispositif d'affichage ou dispositif de signalisation optique suivant la revendication 5 ayant une lampe à décharge dans un gaz suivant la revendication 3, dans lequel la géométrie d'électrodes des groupes d'électrodes associés est adaptée à la forme de surface respective à éclairer.
  7. Dispositif d'affichage ou dispositif de signalisation optique suivant la revendication 6, comprenant une lampe à décharge dans un gaz constituée en sources de rayonnement plates suivant l'une des revendications 1 à 3, pour l'éclairage par l'arrière de dispositifs d'affichage analogiques en forme de cercle, de segment de cercle, d'anneau de cercle ou de segment d'anneau de cercle.
EP98966304A 1997-12-23 1998-12-11 Lampe luminescente a gaz avec groupes d'electrodes actionnables separement Expired - Lifetime EP0995224B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98966304A EP0995224B1 (fr) 1997-12-23 1998-12-11 Lampe luminescente a gaz avec groupes d'electrodes actionnables separement

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP97122799A EP0926705A1 (fr) 1997-12-23 1997-12-23 Radiateur plat à densité lumineuse de surface modulée localement
EP97122799 1997-12-23
DE19817479A DE19817479A1 (de) 1997-12-23 1998-04-20 Gasentladungslampe mit getrennt betreibbaren Elektrodengruppen
DE19817479 1998-04-20
PCT/EP1998/008106 WO1999034411A1 (fr) 1997-12-23 1998-12-11 Lampe luminescente a gaz avec groupes d'electrodes actionnables separement
EP98966304A EP0995224B1 (fr) 1997-12-23 1998-12-11 Lampe luminescente a gaz avec groupes d'electrodes actionnables separement

Publications (2)

Publication Number Publication Date
EP0995224A1 EP0995224A1 (fr) 2000-04-26
EP0995224B1 true EP0995224B1 (fr) 2003-10-15

Family

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Family Applications (3)

Application Number Title Priority Date Filing Date
EP97122799A Withdrawn EP0926705A1 (fr) 1997-12-12 1997-12-23 Radiateur plat à densité lumineuse de surface modulée localement
EP98966304A Expired - Lifetime EP0995224B1 (fr) 1997-12-23 1998-12-11 Lampe luminescente a gaz avec groupes d'electrodes actionnables separement
EP98966303A Expired - Lifetime EP0976145B1 (fr) 1997-12-23 1998-12-11 Dispositif de visualisation avec lampe plat a luminance modulee localement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97122799A Withdrawn EP0926705A1 (fr) 1997-12-12 1997-12-23 Radiateur plat à densité lumineuse de surface modulée localement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98966303A Expired - Lifetime EP0976145B1 (fr) 1997-12-23 1998-12-11 Dispositif de visualisation avec lampe plat a luminance modulee localement

Country Status (11)

Country Link
US (2) US6483255B1 (fr)
EP (3) EP0926705A1 (fr)
JP (2) JP2000510645A (fr)
KR (2) KR100355896B1 (fr)
CN (1) CN1248345A (fr)
AT (1) ATE234506T1 (fr)
CA (2) CA2281221A1 (fr)
DE (3) DE19817479A1 (fr)
HU (1) HUP0002078A3 (fr)
TW (1) TW432899B (fr)
WO (2) WO1999034409A1 (fr)

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EP0926704A1 (fr) 1997-12-23 1999-06-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe plate à décharge à barrière diélectrique
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Also Published As

Publication number Publication date
DE19817479A1 (de) 1999-06-24
DE59807472D1 (de) 2003-04-17
KR100355896B1 (ko) 2002-10-18
ATE234506T1 (de) 2003-03-15
HUP0002078A2 (hu) 2000-10-28
JP3530199B2 (ja) 2004-05-24
EP0976145B1 (fr) 2003-03-12
US6388374B1 (en) 2002-05-14
CA2280805C (fr) 2007-03-13
EP0976145A1 (fr) 2000-02-02
JP2000510646A (ja) 2000-08-15
HUP0002078A3 (en) 2003-03-28
TW432899B (en) 2001-05-01
US6483255B1 (en) 2002-11-19
WO1999034411A1 (fr) 1999-07-08
KR20000075587A (ko) 2000-12-15
WO1999034409A1 (fr) 1999-07-08
KR20000075586A (ko) 2000-12-15
CA2280805A1 (fr) 1999-07-08
EP0995224A1 (fr) 2000-04-26
EP0926705A1 (fr) 1999-06-30
CA2281221A1 (fr) 1999-07-08
DE59809933D1 (de) 2003-11-20
KR100355897B1 (ko) 2002-10-18
CN1248345A (zh) 2000-03-22
JP2000510645A (ja) 2000-08-15

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