EP0053281B1 - Gasentladungs-Leuchtkörper mit Kaltelektroden - Google Patents

Gasentladungs-Leuchtkörper mit Kaltelektroden Download PDF

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Publication number
EP0053281B1
EP0053281B1 EP81109023A EP81109023A EP0053281B1 EP 0053281 B1 EP0053281 B1 EP 0053281B1 EP 81109023 A EP81109023 A EP 81109023A EP 81109023 A EP81109023 A EP 81109023A EP 0053281 B1 EP0053281 B1 EP 0053281B1
Authority
EP
European Patent Office
Prior art keywords
gas discharge
luminous element
element according
vessel
discharge
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
Application number
EP81109023A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0053281A3 (en
EP0053281A2 (de
Inventor
Aladár Rozsnyai
György Sugár
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81109023T priority Critical patent/ATE12854T1/de
Publication of EP0053281A2 publication Critical patent/EP0053281A2/de
Publication of EP0053281A3 publication Critical patent/EP0053281A3/de
Application granted granted Critical
Publication of EP0053281B1 publication Critical patent/EP0053281B1/de
Expired 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
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes

Definitions

  • the invention relates to a gas discharge lamp with cold electrodes, the discharge vessel of which is filled with noble gas and / or mercury vapor.
  • Gas discharge lamps are components that are widely used both in lighting technology and in display technology, for example for advertising or light display, but especially in data display in device technology, and their application properties (e.g. number and quality of the given Luminous body achievable services, reliability of the services and the effects of the use of these components on the investment and operating costs of the systems and system networks equipped with such) also largely determine the applicability of the entire system.
  • incandescent lamps which are mainly used due to various advantageous peculiarities in lighting technology, is their low efficiency when converting electrical energy into light energy. It follows from the known mechanism of action of the incandescent lamp that the z. Currently achievable efficiency of 3-5% compared to a significant improvement is not to be expected; the efficiency of the incandescent lamp is expected to remain in this range in the future. The existing heat effect in the incandescent lamp, which causes the poor efficiency, also leads to further application-related disadvantages.
  • the efficiency that can in principle be achieved with gas discharge lamps with cold electrodes cannot even be achieved with known components of this kind.
  • the energy requirement of the discharge lamps filled with noble gas varies greatly depending on the type, not only depends on the electrode spacing, but also on the filling pressure.
  • the efficiency would be optimal if the discharge lamp were operated with the optimum filling pressure determined on the basis of the known relationships (that is, the filling pressure value), which is sufficient to ensure ignition in the discharge space. In practice, however, a larger filling pressure must be used.
  • the electrodes arranged in the discharge space and the metal particles escaping from them during operation absorb gas, and as a result the originally optimally set filling pressure is reduced; the resulting pressure is no longer sufficient for reliable continuous operation.
  • the light useful power obtained with an electrical power unit fed in is reduced even further, as is often the case, by using light directing means and means protecting against mechanical damage (cover plate, hood, etc.), which also absorb light energy. Even if the transparent protective hood surrounding the luminous body is made of a material that allows light to pass through, a considerable part of the light energy is still absorbed.
  • the present invention also addresses this problem. Your solution is seen in accordance with the characterizing part of claim 1 in that at least one of the electrodes consists of an electrically conductive glass or is provided with a coating of electrically conductive glass.
  • the gas discharge lamp provided with cold electrodes is arranged in a vessel, the wall of which at least partially consists of - for electrodes or ion current - conductive glass, then direct contact between the metallic electrode and the discharge medium can be ruled out and the electrical field required for the discharge in the discharge space can nevertheless be avoided be excited with optimal efficiency.
  • the entire surface of the vessel wall of a luminous element fed with high frequency can consist of conductive glass, e.g. B. made of glass, which contains sodium (oxide) or lithium (oxide). If the energy transfer takes place by means of electron current, then the section of the vessel lying between two adjacent electrodes to be switched at different potentials is made of electrically non-conductive glass, and those sections which are in contact with only one electrode are made of conductive glass. If necessary, the vessel of the luminous element can also consist entirely of conductive glass for energy transmission by means of electron current if the field is excited with high frequency and only a so-called outer electrode is in contact with the vessel, while the other potential is represented by ambient air space.
  • conductive glass e.g. B. made of glass, which contains sodium (oxide) or lithium (oxide).
  • high frequency is used in this description for frequencies that are higher than the mains frequency.
  • the effect according to the invention can also be achieved if the vessel wall - or a part thereof - is not made of conductive glass, but the electrode in the interior of the vessel is covered with conductive glass.
  • This electrode is either arranged inside the vessel or it projects into the interior of the vessel through the vessel wall made of non-conductive glass.
  • the vessel - or at least a part of it - is made of conductive glass
  • the electrode (s) within the vessel is (are) covered with conductive glass.
  • the luminous element according to the invention can be filled to an optimal filling pressure; there can be no interaction between the electrode and the discharge medium, which would influence the pressure conditions in the discharge space, the efficiency of the operation increases significantly, namely in a design which does not impose any further restrictions on the known solutions, which increases the variability in order to achieve different ones additional services concerns; the characteristics according to the invention can therefore be combined with numerous other characteristics, whereby this combination can partly make it possible to enjoy the mode of operation according to the invention supplemented with other effects known per se, and partly it is also possible to achieve such resulting effects which are not at all possible with known gas discharge lamps were possible.
  • the luminous body can also be provided with a cover body, which is arranged in the vicinity of the vessel delimiting the discharge space, along the vessel jacket or a part thereof.
  • This cover body is used for mechanical protection and / or as a light guiding means, can be designed as a closed protective hood and can also form light guiding walls or light guiding shafts.
  • the vessel of the luminous body provided with an external cover body is made of a material which not only lets the visible light through, but z. B. also the ultraviolet radiation, then the luminous area can be increased further by covering the protective hood or the cover body on the inner wall with a luminescent layer or by making the wall itself from a substance containing luminescent particles.
  • the shape formation can be varied in many ways.
  • the display can be adapted even better to the desired image and / or its desired color tone if the vessel is shaped in accordance with the shape of the envelope of the image to be displayed and more than one gas discharge cell is formed in the vessel, which cells are separated from each other - which is the electrical contact concerns - are isolated.
  • either two electrodes can be arranged in the cell for each individual cell or it is in the common discharge space - z. B. in its focus - a central electrode and one cell electrode in each cell.
  • one electrode is expediently arranged in each cell, which electrodes form the counterelectrode in cascade fashion for the adjacent electrodes, so that a discharge arc is formed between the two adjacent electrodes.
  • the luminous element according to the invention can be operated by using fluorescent material with the desired color tint. If the luminous body consists of several discharge cells, the inside walls of all cells can be covered with the same-colored phosphor as a variant; In this case, the division into separate discharge cells only serves to better illustrate the desired profile or the possibility of lighting up different sections of the image at different times. However, it is also possible to apply fluorescent phosphor of different colors, or to use phosphor of the same color in at least some of the cells.
  • a glass-technical, vacuum-technical specialist can use the specialist literature on the conductive glass to determine the additions by means of which the material can be provided with at least a part of the vessel wall or the electrode coating with such conductivity properties that are optimally favorable at the specific place of use, and also the lighting technician can use the technical literature on cold electrode gas discharge tubes to construct very diverse embodiments, depending on the image shape and operational variability desired at the place of use.
  • the applicability of the invention is nevertheless illustrated below with the aid of a few examples.
  • the framework of the oxide-containing glass forms the so-called structure-forming media, while the structure-modifying media are contained in the cavities of the framework.
  • Structural are z.
  • Oxides of an alkali metal or alkaline earth metal can have a modifying effect.
  • Oxides of magnesium, lead or aluminum can act both as a structure and as a modifier.
  • alkali metal oxide For some types of glass, the content of alkali metal oxide (s) must be increased in order to achieve maximum conductivity; oxides of divalent metals, e.g. B. ZnO or MgO can be used, and the use of Ca0 or PbO must be avoided.
  • oxides of divalent metals e.g. B. ZnO or MgO
  • Ca0 or PbO The influence of an oxide on the conductivity of the glass depends on its quantity and the original composition of the glass.
  • Various elements of groups 111, IV, V or VI of the periodic system can be used for these purposes.
  • the glass can become conductive to electron current due to the atomic bonds of the oxide layer.
  • the conductivity for electron current can be increased by adding additions with ionic bonding to the silicate glass. Similar phenomena can be observed when elements of variable valence are present in the glass. With a content of 10% iron oxide or vanadate, there may already be conductivity for electrode current in the silicate glass.
  • An example composition for electron current conducting glass :
  • the glass can become clearly electron current conductive if elements of the oxygen group are added, whereby two, three and also more components can be added. For example:
  • the geometry of the discharge chamber (s) is illustrated on the basis of a few exemplary embodiments, and an example of the glass coating of the electrode is also given.
  • partitions 12 divide the vessel 11 into four discharge cells in such a way that, as a result of the communication between the cells, the discharge medium fills the entire interior of the luminous element in a coherent manner.
  • a central electrode 13 is arranged - in the gap existing between the ends of the intermediate walls 12 - and a cell electrode 14 in each cell.
  • a fitting 15 made of fluorescent material is attached to the inner wall of the vessel 11 which is of different colors in each cell.
  • the lead wires of the cell electrodes 14 are connected to the corresponding terminals of an electronic sequencer, which is not shown; there is the possibility of activating the individual discharge cells sequentially according to a desired light display game, it being possible, of course, to control both only one cell and several cells at the same time.
  • the contour line of the vessel 21 in FIG. 2 is similar to the contour line of the vessel 11 in FIG. 1, but a single discharge space is formed within the vessel wall with two relatively large-area electrodes 22.
  • the area relationships of the discharge space and the electrodes 22 shown in the illustration show dimensionally correct under which conditions the luminous element according to the invention works as a mains-fed luminous source with the mode of operation according to the invention.
  • FIG 3.a the vessel 31 of the luminous element (part of the same) and the electrode 32 hermetically carried through the wall thereof are shown, the part of which protrudes into the vessel 31 is insulated from the discharge medium by a coating 34 made of conductive glass.
  • the coating 34 is fused to the wall of the vessel 31 at the cross sections 33.
  • Figure 3.b shows the already coated electrode 32 in the state prepared for melting.
  • Gas discharge lamps with an outer electrode are well known in the art.
  • the corresponding - but designed according to the invention - lamp differs from the known designs in that the part of the vessel 41 (Fig. 4) with which the outer electrode 42 - in the example shown a wire electrode - has contact, consists of conductive glass.
  • Figure 4.a shows the bulb part 411 made of non-conductive glass and the bulb part 412 made of conductive glass in the state prepared for the fusion
  • Figure 4.b shows the already assembled vessel 41 with the weld seam in cross-section 43. Also the one made of the corresponding phosphor Rubber 44 is shown.
  • FIG. 5 shows the embodiment in which the energy exciting the discharge field is fed in via two outer electrodes 521 and 522.
  • the two vessel parts 511 and 512 are made of conductive glass and have contact with only one outer electrode 521 and 522, respectively, and these vessel parts 511 and 512 are fused to a section 53 made of non-conductive glass over the cross-sections 54 thereof on both sides and thus form the hermetically sealed vessel 51.
  • Figure 5.a shows the parts of the vessel 51 mentioned before the fusion with the covering 55 made of fluorescent material and attached to the inner walls;
  • Figure 5.b shows the mounted lamp.
  • Figure 6 schematically shows a luminous element in two different versions, in which the field energy is fed in via two outer electrodes 621 and 622.
  • the vessel 61 made of conductive glass which carry the outer electrodes 621 and 622; these are fused along the cross sections 64 to the two ends of a cylinder tube 613 made of non-conductive glass.
  • the major part of the cylindrical path of the filament consists of conventional glass, i.e. a much longer path as in the version according to Figure 5 (Section 53).
  • the effectiveness of the coupling is not guaranteed here by the fact that conductive glass delimits the discharge space over almost the entire length of the filament, but by the fact that the inner or outer wall (Fig.
  • Cylinder tube 613 is provided with an electrically conductive coating 63 such that it always has electrical contact with only one of the outer electrodes 621 and 622, but is insulated from the other outer electrode 622 and 621 in order to avoid a short circuit.
  • an electrically conductive coating 63 such that it always has electrical contact with only one of the outer electrodes 621 and 622, but is insulated from the other outer electrode 622 and 621 in order to avoid a short circuit.
  • Figure 7 illustrates how the distribution of the common discharge space over several discharge cells shows the display of the respective - regular or irregular
  • Figure 7.a shows a comb profile, 7.b a T profile, 7.c an A profile.
  • the vessels 711, 712, 713 enclose an ionization space 73 in which an electrode 72 is arranged near the end points of the homogeneous profile parts, so that the discharge arc encompasses the entire contour line of the profile.
  • FIG. 1 to 7 serve only as an illustration; it is obvious that the illuminants according to the invention can be realized in many variants and embodiments, which means the installation of the conductive glass in the vessels of the illuminants or the covering of the electrodes with conductive glass, the choice of the geometry and the material properties, etc. concerns, without thereby deviating from the inventive idea.
  • the illuminants according to the invention can u. a. be carried out for the following applications: for luminous dots of a luminous display field, for signal lamps, as a special lamp for dark rooms, as components in matrix-shaped display boards for the reproduction of television or film images.
  • Luminous elements according to the invention can be used to populate large-scale light panels, slide projectors, X-ray fluoroscopy devices, signal lights, numerical display devices, which can be operated from the mains, from a battery or from internal AC sources.
  • a suitable method for increasing the luminous area consists in pouring the luminous element into a transparent or transparent support frame; In this way, a heap of elementary luminous elements with a base area of a few millimeters or centimeters each can be used to obtain a homogeneous light panel of any size and color shade (color distribution) that ensures uniform light intensity in all places and in all directions.
  • Luminous elements that are intended to display an inscription, a picture, a text, an alphanumeric character or a walking font can also be encased in a frame in this way. This not only extends the field of application of the luminous bodies according to the invention, but also significantly increases the aesthetic effect.
  • the frame does not necessarily have to be produced together with the elementary luminous elements using the casting process.
  • the frame can also be poured out as an intermediate product or produced on the rolling path or in such a way that cavities are released for the lighting elements in an appropriate distribution and number with (each) a subsequently hermetically sealable evacuation channel. These cavities are first provided with a wall covering made of the appropriate phosphor, then the evacuation is carried out and the appropriate discharge medium is filled in; when the optimal filling pressure is reached, the evacuation channel is closed on the melting path.
  • the cast materials and glass plates can also be colored accordingly if necessary; Dye or fluorescent substance can be added to the material or an appropriate coating can be applied.
  • the coating can of course consist of permanent fluorescent; Thus, even with periodic excitation, the impression of continuous lighting can arise if the mode of operation is adapted to the sluggishness of the face; the feed energy can be used even cheaper.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Endoscopes (AREA)
  • Luminescent Compositions (AREA)
  • Stringed Musical Instruments (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP81109023A 1980-11-27 1981-10-27 Gasentladungs-Leuchtkörper mit Kaltelektroden Expired EP0053281B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109023T ATE12854T1 (de) 1980-11-27 1981-10-27 Gasentladungs-leuchtkoerper mit kaltelektroden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU802830A HU182678B (en) 1980-11-27 1980-11-27 Gas discharge illuminator with cold electrode
HU283080 1980-11-27

Publications (3)

Publication Number Publication Date
EP0053281A2 EP0053281A2 (de) 1982-06-09
EP0053281A3 EP0053281A3 (en) 1982-09-08
EP0053281B1 true EP0053281B1 (de) 1985-04-17

Family

ID=10961279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109023A Expired EP0053281B1 (de) 1980-11-27 1981-10-27 Gasentladungs-Leuchtkörper mit Kaltelektroden

Country Status (12)

Country Link
EP (1) EP0053281B1 (fi)
JP (1) JPS57119453A (fi)
AT (1) ATE12854T1 (fi)
AU (1) AU7791681A (fi)
DD (1) DD207057A1 (fi)
DE (1) DE3170023D1 (fi)
ES (1) ES8302360A1 (fi)
FI (1) FI813731L (fi)
GR (1) GR76305B (fi)
HU (1) HU182678B (fi)
NO (1) NO814002L (fi)
YU (1) YU274281A (fi)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951452A (ja) * 1982-09-17 1984-03-24 Toshiba Electric Equip Corp 表示用蛍光ランプ
DE3864611D1 (de) * 1987-07-09 1991-10-10 Matsushita Electric Works Ltd Farb-leuchtstofflampen-anzeigeeinheit.
JPH02160360A (ja) * 1989-09-14 1990-06-20 Toshiba Lighting & Technol Corp 表示用けい光ランプ
JPH02160362A (ja) * 1989-09-14 1990-06-20 Toshiba Lighting & Technol Corp 表示用けい光ランプ装置
JPH02160359A (ja) * 1989-09-14 1990-06-20 Toshiba Lighting & Technol Corp 表示用けい光ランプ
JPH02160361A (ja) * 1989-09-14 1990-06-20 Toshiba Lighting & Technol Corp 表示用けい光ランプ
JP2655196B2 (ja) * 1990-03-28 1997-09-17 東芝ライテック株式会社 低圧放電灯およびこれを用いた表示装置
DE9405142U1 (de) * 1994-03-25 1994-06-23 Brand Erbisdorfer Lichtquellen Transmitter zum Einbringen elektrischer Energie in Gasentladungslampen
DE19724298A1 (de) * 1997-06-09 1998-12-10 Thomas Danhauser Bestrahlungslampe für Bräunungsanlagen
DE102013103807A1 (de) 2013-04-16 2014-10-16 Dritte Patentportfolio Beteiligungsgesellschaft Mbh & Co.Kg HF-Lampe mit vergrabener Elektrode

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE492635C (de) * 1930-02-27 Carl Haider In Schriftform gehaltener Leuchthohlkoerper
US2161716A (en) * 1939-01-25 1939-06-06 Joseph F Frese Animated electrical discharge device
US3833828A (en) * 1972-08-16 1974-09-03 J Vivari Illumination array structure
US4195249A (en) * 1978-08-30 1980-03-25 Stanley Electric Co., Ltd. Flat type of fluorescent lamp

Also Published As

Publication number Publication date
ES507462A0 (es) 1983-01-01
FI813731L (fi) 1982-05-28
AU7791681A (en) 1982-06-03
YU274281A (en) 1983-06-30
EP0053281A3 (en) 1982-09-08
NO814002L (no) 1982-05-28
DE3170023D1 (en) 1985-05-23
GR76305B (fi) 1984-08-04
DD207057A1 (de) 1984-02-15
ATE12854T1 (de) 1985-05-15
ES8302360A1 (es) 1983-01-01
EP0053281A2 (de) 1982-06-09
JPS57119453A (en) 1982-07-24
HU182678B (en) 1984-02-28

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