EP0414840A1 - Gas-enclosure lighting device - Google Patents

Gas-enclosure lighting device

Info

Publication number
EP0414840A1
EP0414840A1 EP90902280A EP90902280A EP0414840A1 EP 0414840 A1 EP0414840 A1 EP 0414840A1 EP 90902280 A EP90902280 A EP 90902280A EP 90902280 A EP90902280 A EP 90902280A EP 0414840 A1 EP0414840 A1 EP 0414840A1
Authority
EP
European Patent Office
Prior art keywords
winding
terminal
primary
transistor
source according
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Withdrawn
Application number
EP90902280A
Other languages
German (de)
French (fr)
Inventor
Aimé DURAND
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0414840A1 publication Critical patent/EP0414840A1/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/2885Static converters especially adapted therefor; Control thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00Electric lamp and discharge devices: systems
    • Y10S315/07Starting and control circuits for gas discharge lamp using transistors

Definitions

  • the present invention relates to light sources, and more particularly those which produce electromagnetic energy in the visible field in order to illuminate any element in any field, whether industrial, commercial, advertising, domestic, etc.
  • These sources essentially comprise a closed enclosure generally containing a rare gas such as argon, neon, krypton, etc., or a mixture of these gases, this enclosure comprising, inside, more or less complex electrodes passing through its wall to the outside, through watertight passages. These electrodes are themselves joined to the output terminals of an electronic circuit for producing an electric supply current, this circuit being able to be supplied from different energy sources. These sources are those supplying an alternating current which can be rectified, or then batteries, accumulators or the like directly supplying direct current.
  • a rare gas such as argon, neon, krypton, etc.
  • Electronic circuits currently known are quite complex because they generally require, from alternating current, a certain number of sub-assemblies which are, in general, transformers, rectifiers, oscillating circuits, as well as peripheral circuits. appendices making it possible to supply electrical pulses to initiate a discharge between the two electrodes located inside the enclosure and thus produce, by various phenomena known in themselves, an emission of electromagnetic waves.
  • the object of the present invention is to produce a light source of electromagnetic radiation in the visible range comprising a minimum of elements capable of operating from a source of electrical energy, both alternative and continuous, and making it possible to obtain a lifespan of these elements much longer than that which is obtained with light sources of the same type of the prior art, and above all, a light source comprising relatively simple circuits, inexpensive, not bulky and providing instantaneous ignition .
  • the subject of the present invention is a light source characterized in that it comprises:
  • a transformation winding having a primary with at least two first and second windings and a secondary with at least one winding
  • resistive means able to connect said supply potential terminal to said terminal of said load capacity which is connected to the second end of the second winding of the primary, a sealed enclosure containing a gas, said enclosure comprising two simple output electrodes, and
  • the diagram of the single figure represents an embodiment of a light source according to the invention.
  • This source comprises a supply potential terminal 1 and a reference potential terminal 2, these two terminals being able to be connected, for example, to the two positive and negative terminals 32 of a source of electrical energy 500 of current continued.
  • the source further comprises a transformation winding 200 comprising a primary winding with at least two first 9 and second 12 windings and a secondary winding 16, these windings being coupled by a ferrite 15.
  • transistor 300 for example of the NPN type, having three electrodes, respectively base 22, emitter 24 and collector 23.
  • the source comprises connection means for connecting the supply potential terminal 1 to a first end 10 of the first winding 9 of the primary.
  • these means consist of a diode 6 whose anode 7 is connected to the input terminal 1 and whose cathode 8 is connected to point 10 of the winding 9. This diode essentially allows, in the case for example of an unfortunate reverse connection to the source of electrical energy, to avoid a bad supply of the transistor 300 which would destroy it.
  • Connection means are also provided making it possible to connect the second end 11 of the first winding 9 of the primary to a first electrode 22 of the transistor 300, in this case its base. These means are simply constituted by an electrical conductor.
  • Third connection means make it possible to connect a second electrode 23, in one instance the collector of the transistor 300, to a first end 13 of the second winding 12 of the primary. These means are also simply constituted by an electrical conductor.
  • the other end 14 of the winding 12 is connected by a load capacity 25 to the potential reference terminal 2. In this case, this end 14 of the winding 12 is connected by an electrical conductor to a first terminal 26 of the capacitor 25 while the second terminal 27 of this capacitor is connected to the terminal 2, for example by the ground as schematically represented at 100.
  • the source also comprises resistive means 400, for example a potentiometer whose cursor point 30 is connected by one end 29 of the potentiometer to the first terminal 26 of the load capacity 25, while its other end 28 is connected to the terminal of supply potential 1 via diode 6, while being connected to cathode 8 thereof.
  • resistive means 400 for example a potentiometer whose cursor point 30 is connected by one end 29 of the potentiometer to the first terminal 26 of the load capacity 25, while its other end 28 is connected to the terminal of supply potential 1 via diode 6, while being connected to cathode 8 thereof.
  • the source further comprises a sealed enclosure 19, made of a material transparent to waves in the visible range, for example glass, containing a generally rare gas such as argon, neon, helium, or the like.
  • This enclosure may also include, deposited on its inner face, a fluorescent product.
  • It is generally oblong in shape and further comprises two simple electrodes 20, 21, for example made of a conductive metal such as copper, which respectively connect the two inner ends of the enclosure to the outside of this enclosure, passing through it. watertight passages.
  • these two electrodes 20, 21 are connected to the two ends 17, 18 of the secondary winding 16, for example by electrical conductors.
  • the source comprises a filtering capacity 3, for example a capacitor
  • the electrical energy source 500 can be constituted, for example, by a battery, an accumulator, etc.
  • this source can also be constituted by an electrical circuit of the rectifier type supplied by an alternating current source 31 which is commonly found.
  • Such a rectifier circuit is known in itself and will not be described in detail here, knowing nevertheless that it generally comprises at least one transformer 34 and, for example, a diode bridge 33.
  • the capacitor 25 charges and discharges through the transistor 300 between its two electrodes 23, 24.
  • the potential induced in the secondary 16 at its terminals 17, 18 makes it possible to trigger a discharge in the gas contained in the enclosure 19.
  • this voltage likewise induces a reaction voltage in the first winding 9 which makes it possible to block the transistor by its basic voltage. The capacity can therefore charge again.
  • the transformer is no longer saturated, it makes it possible to release the blocking voltage of the transistor and therefore to trigger the discharge of the capacitor 25 again as described above.
  • This cycle of phenomena is reproduced at the rate of the value of the capacity charging temple through the resistance of the potentiometer.
  • This frequency value, or a value close to it, has been determined experimentally as giving a good result. Indeed, this gives a good regime of discharges in the gas of the enclosure, that is to say that which allows the human eye to see a light continuous, but also to obtain in the gas an instantaneous ignition of the light arc, without the aid of additional means, and, in addition, with gas pressures which can be relatively low, which leads to a very low electricity consumption.
  • the light source has a very long service life and that it is not necessary to make frequent changes to the enclosure, including with gas. .

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

La présente invention concerne les sources lumineuses. La source lumineuse selon l'invention se caractérise essentiellement par le fait qu'elle comprend deux bornes (1, 2) de potentiel, un bobinage de transformation ayant un primaire à deux enroulements (9, 12) et un secondaire (16), un transistor (300), la borne de potentiel (1) étant reliée au premier enroulement (9) du primaire, qui est relié à la base (22) du transistor, dont le collecteur (23) est relié au second enroulement du primaire et dont l'émetteur (24) est relié à la borne (2), une capacité de charge (25) reliant le second enroulement (12) à la borne (2), un potentiomètre (400) reliant la borne (1) à la capacité (25), au point commun entre la capacité et le second enroulement, une enceinte étanche (19) à deux électrodes (20, 21) contenant un gaz, ces deux électrodes étant reliées à l'enroulement (16) du secondaire. L'invention trouve une application avantageuse dans l'éclairage de tout type, dans l'industrie, la publicité, le domestique, etc.The present invention relates to light sources. The light source according to the invention is essentially characterized by the fact that it comprises two potential terminals (1, 2), a transformation winding having a primary with two windings (9, 12) and a secondary (16), a transistor (300), the potential terminal (1) being connected to the first winding (9) of the primary, which is connected to the base (22) of the transistor, whose collector (23) is connected to the second winding of the primary and whose the emitter (24) is connected to terminal (2), a load capacitor (25) connecting the second winding (12) to the terminal (2), a potentiometer (400) connecting the terminal (1) to the capacitor (25), at the common point between the capacitor and the second winding, a sealed enclosure (19) with two electrodes (20, 21) containing a gas, these two electrodes being connected to the winding (16) of the secondary. The invention finds an advantageous application in lighting of all types, in industry, advertising, domestic, etc.

Description

" DISPOSITIF D'ECLAIRAGE A ENCEINTES A GAZ "  "LIGHTING DEVICE WITH GAS ENCLOSURES"
La présente invention concerne des sources lumineuses, et plus particulièrement celles qui produisent de l'énergie électromagnétique dans le domaine du visible afin d'éclairer tout élément dans tout domaine, qu'il soit industriel, commercial, publicitaire, domestique, etc. The present invention relates to light sources, and more particularly those which produce electromagnetic energy in the visible field in order to illuminate any element in any field, whether industrial, commercial, advertising, domestic, etc.
Il existe actuellement de nombreuses sources lumineuses produisant une énergie sous forme d'un rayonnement électromagnétique dans le domaine du visible. Ces sources comprennent essentiellement une enceinte fermée contenant généralement un gaz rare tel que de l'argon, du néon, du krypton, etc, ou un mélange de ces gaz, cette enceinte comprenant, à l'intérieur, des électrodes plus ou moins complexes traversant sa paroi vers l'extérieur, à travers des passages étanches. Ces électrodes sont elles-mêmes réunies aux bornes de sortie d'un circuit électronique d'élaboration d'un courant électrique d'alimentation, ce circuit étant apte à être alimenté à partir de différentes sources d'énergie. Ces sources sont celles fournissant un courant alternatif qui peut être redressé, ou alors des batteries, accumulateurs ou analogues fournissant directement du courant continu.  There are currently many light sources producing energy in the form of electromagnetic radiation in the visible domain. These sources essentially comprise a closed enclosure generally containing a rare gas such as argon, neon, krypton, etc., or a mixture of these gases, this enclosure comprising, inside, more or less complex electrodes passing through its wall to the outside, through watertight passages. These electrodes are themselves joined to the output terminals of an electronic circuit for producing an electric supply current, this circuit being able to be supplied from different energy sources. These sources are those supplying an alternating current which can be rectified, or then batteries, accumulators or the like directly supplying direct current.
Les circuits électroniques connus actuellement sont assez complexes car ils nécessitent généralement, à partir du courant alternatif, un certain nombre de sous-ensembles qui sont, d'une façon générale, des transformateurs, des redresseurs, des circuits oscillants, ainsi que des circuits périphériques annexes permettant de fournir des impulsions électriques d'amorçage d'une décharge entre les deux électrodes situées à l'intérieur de l'enceinte et ainsi produire, par différents phénomènes connus en eux-mêmes, une émission d'ondes électromagnétiques.  Electronic circuits currently known are quite complex because they generally require, from alternating current, a certain number of sub-assemblies which are, in general, transformers, rectifiers, oscillating circuits, as well as peripheral circuits. appendices making it possible to supply electrical pulses to initiate a discharge between the two electrodes located inside the enclosure and thus produce, by various phenomena known in themselves, an emission of electromagnetic waves.
En fait, on constate que les sources lumineuses mises au point jusqu'à présent donnent relativement de bons résultats. Cependant, malgré tout, elles nécessitent des circuits électroniques d'alimentation très complexes, lourds et onéreux qui, en plus, du fait de leur conception, entraînent une durée de vie des enceintes relativement courte. Il lrrive même que ces sources lumineuses, du fait de certaines défaillances d'éléments qui entrent dans leur constitution, ne puissent plus produire leur émission d'ondes électromagnétiques. In fact, it can be seen that the light sources developed so far give relatively good results. However, despite everything, they require very complex, heavy and expensive electronic supply circuits which, in addition, by virtue of their design, lead to a relatively short lifetime of the speakers. It even happens that these light sources, from made of certain failures of elements which enter into their constitution, can no longer produce their emission of electromagnetic waves.
La présente invention a pour but de réaliser une source lumineuse d'un rayonnement électromagnétique dans le domaine du visible comportant un minimum d'éléments pouvant fonctionner à partir d'une source d'énergie électrique aussi bien alternative que continue, et permettant d'obtenir une durée de vie de ces éléments beaucoup plus longue que celle qui est obtenue avec les sources lumineuses du même type de l'art antérieur, et surtout, une source lumineuse comportant des circuits relativement simples, peu onéreux, peu volumineux et procurant instantanément son allumage.  The object of the present invention is to produce a light source of electromagnetic radiation in the visible range comprising a minimum of elements capable of operating from a source of electrical energy, both alternative and continuous, and making it possible to obtain a lifespan of these elements much longer than that which is obtained with light sources of the same type of the prior art, and above all, a light source comprising relatively simple circuits, inexpensive, not bulky and providing instantaneous ignition .
Plus précisément, la présente invention a pour objet une source lumineuse caractérisée par le fait qu'elle comporte :  More specifically, the subject of the present invention is a light source characterized in that it comprises:
une borne de potentiel d'alimentation,  a supply potential terminal,
une borne de potentiel de référence,  a reference potential terminal,
un bobinage de transformation ayant un primaire à au moins deux premier et second enroulements et un secondaire à au moins un enroulement,  a transformation winding having a primary with at least two first and second windings and a secondary with at least one winding,
un transistor à trois première, deuxième et troisième électrodes,  a transistor with three first, second and third electrodes,
des premiers moyens de connexion de ladite borne de potentiel d'alimentation à une première extrémité dudit premier enroulement du primaire,  first means for connecting said supply potential terminal to a first end of said first primary winding,
des deuxièmes moyens de connexion de la deuxième extrémité dudit premier enroulement dudit primaire à une première électrode dudit transistor,  second means for connecting the second end of said first winding of said primary to a first electrode of said transistor,
des troisièmes moyens de connexion de la deuxième électrode dudit transistor à une première extrémité dudit second enroulement du primaire,  third means for connecting the second electrode of said transistor to a first end of said second winding of the primary,
une capacité de charge,  load capacity,
des quatrièmes moyens de connexion de la deuxième extrémité dudit second enroulement dudit primaire à une borne de ladite capacité de charge,  fourth means for connecting the second end of said second winding of said primary to a terminal of said load capacity,
des cinquièmes moyens de connexion de l'autre borne de ladite capacité de charge à ladite borne de potentiel de référence, des sixièmes moyens de connexion de la troisième électrode dudit transistor à ladite borne de potentiel de référence, fifth means for connecting the other terminal of said load capacity to said reference potential terminal, sixth means for connecting the third electrode of said transistor to said reference potential terminal,
des moyens résistifs aptes à relier ladite borne de potentiel d'alimentation à ladite borne de ladite capacité de charge qui est reliée à la deuxième extrémité du deuxième enroulement du primaire, une enceinte étanche contenant un gaz, ladite enceinte comportant deux électrodes simples de sortie, et  resistive means able to connect said supply potential terminal to said terminal of said load capacity which is connected to the second end of the second winding of the primary, a sealed enclosure containing a gas, said enclosure comprising two simple output electrodes, and
des septièmes moyens de connexion des deux bornes de sortie des deux dites électrodes simples de l'enceinte, respectivement aux deux dites extrémités dudit enroulement secondaire.  seventh means for connecting the two output terminals of the two said simple electrodes of the enclosure, respectively at the two said ends of said secondary winding.
D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard du dessin annexé à titre illustratif, mais nullement limitatif, dans lequel la figure unique représente le schéma diagramme d'un mode de réalisation d'une source lumineuse conforme à l'invention.  Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawing annexed by way of illustration, but in no way limiting, in which the single figure represents the diagram diagram of an embodiment of a source. light according to the invention.
Le schéma de la figure unique représente un mode de réalisation d'une source lumineuse conforme à l'invention. Cette source comprend une borne de potentiel d'alimentation 1 et une borne de potentiel de référence 2, ces deux bornes étant aptes à être reliées, par exemple, aux deux bornes positive et négative 32 d'une source d'énergie électrique 500 de courant continu.  The diagram of the single figure represents an embodiment of a light source according to the invention. This source comprises a supply potential terminal 1 and a reference potential terminal 2, these two terminals being able to be connected, for example, to the two positive and negative terminals 32 of a source of electrical energy 500 of current continued.
La source comprend en plus un bobinage de transformation 200 comportant un enroulement primaire à au moins deux premier 9 et second 12 enroulements et un enroulement secondaire 16, ces enroulements étant couplés par une ferrite 15.  The source further comprises a transformation winding 200 comprising a primary winding with at least two first 9 and second 12 windings and a secondary winding 16, these windings being coupled by a ferrite 15.
Elle comporte aussi un transistor 300, par exemple du type NPN, ayant trois électrodes respectivement base 22, émetteur 24 et collecteur 23.  It also includes a transistor 300, for example of the NPN type, having three electrodes, respectively base 22, emitter 24 and collector 23.
Dans ce cas, la source comprend des moyens de connexion pour relier la borne de potentiel d'alimentation 1 à une première extrémité 10 du premier enroulement 9 du primaire. Dans ce mode de réalisation, ces moyens sont constitués par une diode 6 dont l'anode 7 est reliée à la borne d'entrée 1 et dont la cathode 8 est reliée au point 10 de l'enroulement 9. Cette diode permet essentiellement, dans le cas par exemple d'une connexion inverse malencontreuse à la source d'énergie électrique, d'éviter une mauvaise alimentation du transistor 300 qui le détruirait. In this case, the source comprises connection means for connecting the supply potential terminal 1 to a first end 10 of the first winding 9 of the primary. In this embodiment, these means consist of a diode 6 whose anode 7 is connected to the input terminal 1 and whose cathode 8 is connected to point 10 of the winding 9. This diode essentially allows, in the case for example of an unfortunate reverse connection to the source of electrical energy, to avoid a bad supply of the transistor 300 which would destroy it.
Des moyens de connexion sont aussi prévus permettant de relier la deuxième extrémité 11 du premier enroulement 9 du primaire à une première électrode 22 du transistor 300, en l' occurence sa base. Ces moyens sont simplement constitués par un conducteur électrique. Des troisièmes moyens de connexion permettent de relier une deuxième électrode 23, en 1' occurence le collecteur du transistor 300, à une première extrémité 13 du second enroulement 12 du primaire. Ces moyens sont aussi simplement constitués par un conducteur électrique. L'autre extrémité 14 de l'enroulement 12 est reliée par une capacité de charge 25 à la borne de référence de potentiel 2. Dans ce cas, cette extrémité 14 de l'enroulement 12 est reliée par un conducteur électrique à une première borne 26 de la capacité 25 tandis que la seconde borne 27 de cette capacité est reliée à la borne 2, par exemple par la masse telle que schématiquement représentée en 100. Il existe aussi des moyens pour relier la troisième électrode 24, en l' occurence l'émetteur du transistor, à la borne de potentiel de référence 2, par exemple par l'intermédiaire aussi de la masse 100.  Connection means are also provided making it possible to connect the second end 11 of the first winding 9 of the primary to a first electrode 22 of the transistor 300, in this case its base. These means are simply constituted by an electrical conductor. Third connection means make it possible to connect a second electrode 23, in one instance the collector of the transistor 300, to a first end 13 of the second winding 12 of the primary. These means are also simply constituted by an electrical conductor. The other end 14 of the winding 12 is connected by a load capacity 25 to the potential reference terminal 2. In this case, this end 14 of the winding 12 is connected by an electrical conductor to a first terminal 26 of the capacitor 25 while the second terminal 27 of this capacitor is connected to the terminal 2, for example by the ground as schematically represented at 100. There are also means for connecting the third electrode 24, in this case the emitter of the transistor, at the reference potential terminal 2, for example also via ground 100.
La source comprend en outre des moyens résistifs 400, par exemple un potentiomètre dont le point curseur 30 est relié par une extrémité 29 du potentiomètre à la première borne 26 de la capacité de charge 25, tandis que son autre extrémité 28 est reliée à la borne de potentiel d'alimentation 1 par l'intermédiaire de la diode 6, en étant connectée à la cathode 8 de celle-ci.  The source also comprises resistive means 400, for example a potentiometer whose cursor point 30 is connected by one end 29 of the potentiometer to the first terminal 26 of the load capacity 25, while its other end 28 is connected to the terminal of supply potential 1 via diode 6, while being connected to cathode 8 thereof.
La source comprend en plus une enceinte étanche 19, en un matériau transparent aux ondes dans le domaine du visible, par exemple du verre, contenant un gaz généralement rare tel que de l'argon, du néon, de l'hélium, ou analogue. Cette enceinte peut en plus comporter, déposé sur sa face intérieure, un produit fluorescent. Elle est généralement de forme oblongue et comporte en outre deux électrodes simples 20, 21, par exemple en un métal conducteur comme du cuivre, qui relient respectivement les deux extrémités intérieures de l'enceinte à l'extérieur de cette enceinte, en la traversant par des passages étanches. En fait, ces deux électrodes 20, 21 sont reliées aux deux extrémités 17, 18 de l'enroulement secondaire 16, par exemple par des conducteurs électriques. Dans un mode de réalisation avantageux, la source comprend une capacité de filtrage 3, par exemple un condensateur The source further comprises a sealed enclosure 19, made of a material transparent to waves in the visible range, for example glass, containing a generally rare gas such as argon, neon, helium, or the like. This enclosure may also include, deposited on its inner face, a fluorescent product. It is generally oblong in shape and further comprises two simple electrodes 20, 21, for example made of a conductive metal such as copper, which respectively connect the two inner ends of the enclosure to the outside of this enclosure, passing through it. watertight passages. In fact, these two electrodes 20, 21 are connected to the two ends 17, 18 of the secondary winding 16, for example by electrical conductors. In an advantageous embodiment, the source comprises a filtering capacity 3, for example a capacitor
électrolytique, qui réunit, par ses deux bornes de sortie 4 et 5, la borne de potentiel d'alimentation 1 à celle 2 du potentiel de référence, cette capacité permettant de filtrer le courant continu pour éliminer les éventuels signaux de fréquence qui seraient superposés à ce courant continu. electrolytic, which brings together, via its two output terminals 4 and 5, the supply potential terminal 1 to that 2 of the reference potential, this capacity making it possible to filter the direct current to eliminate any frequency signals which may be superimposed on this direct current.
Enfin il est bien précisé que la source d'énergie électrique 500 peut être constituée, par exemple, par une batterie, un accumulateur, etc. Cependant, cette source peut être également constituée par un circuit électrique du type redresseur alimenté par une source de courant alternatif 31 que l'on trouve couramment. Un tel circuit redresseur est connu en lui-même et ne sera pas amplement décrit ici, sachant malgré tout qu'il comprend généralement au moins un transformateur 34 et, par exemple, un pont de diodes 33.  Finally, it is clearly specified that the electrical energy source 500 can be constituted, for example, by a battery, an accumulator, etc. However, this source can also be constituted by an electrical circuit of the rectifier type supplied by an alternating current source 31 which is commonly found. Such a rectifier circuit is known in itself and will not be described in detail here, knowing nevertheless that it generally comprises at least one transformer 34 and, for example, a diode bridge 33.
La source lumineuse décrite ci-dessus fonctionne de la façon suivante:  The light source described above works as follows:
Quand les deux bornes 1 et 2 sont alimentées par un courant continu, la capacité 25 se charge et se décharge à travers le transistor 300 entre ses deux électrodes 23, 24. Au cours de la décharge, le potentiel induit dans le secondaire 16 à ses bornes 17, 18 permet de déclencher une décharge dans le gaz contenu dans l'enceinte 19. Cependant, cette tension induit de même une tension de réaction dans le premier enroulement 9 qui permet de bloquer le transistor par sa tension de base. La capacité peut donc se charger à nouveau. Le transformateur n'étant plus saturé, il permet de libérer la tension de bloquage du transistor et donc de déclencher à nouveau la décharge de la capacité 25 comme décrit ci-avant.  When the two terminals 1 and 2 are supplied by a direct current, the capacitor 25 charges and discharges through the transistor 300 between its two electrodes 23, 24. During the discharge, the potential induced in the secondary 16 at its terminals 17, 18 makes it possible to trigger a discharge in the gas contained in the enclosure 19. However, this voltage likewise induces a reaction voltage in the first winding 9 which makes it possible to block the transistor by its basic voltage. The capacity can therefore charge again. As the transformer is no longer saturated, it makes it possible to release the blocking voltage of the transistor and therefore to trigger the discharge of the capacitor 25 again as described above.
Ce cycle de phénomènes se reproduit au rythme de la valeur du tempe de charge de la capacité à travers la résistance du potentiomètre. Il se produit ainsi un cycle de décharges successives à une fréquence qui est de l'ordre de 30 000 Hertz. Cette valeur de fréquence, ou une valeur qui lui est voisine, a été déterminée expérimentalement comme donnant un bon résultat. En effet, celle-ci donne un bon régime de décharges dans le gaz de l'enceinte, c'est-à-dire celui qui permet à l'oeil humain de voir une lumière continue, mais aussi d'obtenir dans le gaz un amorçage instantané de l'arc lumineux, sans l'aide de moyens annexes, et, en plus, avec des pressions de gaz qui peuvent être relativement faibles, ce qui conduit à une très faible consommation d'électricité. This cycle of phenomena is reproduced at the rate of the value of the capacity charging temple through the resistance of the potentiometer. This produces a cycle of successive discharges at a frequency which is of the order of 30,000 Hertz. This frequency value, or a value close to it, has been determined experimentally as giving a good result. Indeed, this gives a good regime of discharges in the gas of the enclosure, that is to say that which allows the human eye to see a light continuous, but also to obtain in the gas an instantaneous ignition of the light arc, without the aid of additional means, and, in addition, with gas pressures which can be relatively low, which leads to a very low electricity consumption.
A tous les avantages mentionnés ci-dessus, il faut ajouter le fait que la source lumineuse à une durée de vie très longue et qu'il n'est pas nécessaire de procéder à de fréquents changements de l'enceinte, y compris avec le gaz.  To all the advantages mentioned above, we must add the fact that the light source has a very long service life and that it is not necessary to make frequent changes to the enclosure, including with gas. .

Claims

RE V E ND I C A T I O N S RE VE ND ICATIONS
1. Source lumineuse caractérisée par le fait qu'elle comporte une borne de potentiel d'alimentation (1), 1. Light source characterized in that it includes a supply potential terminal (1),
une borne de potentiel de référence (2),  a reference potential terminal (2),
un bobinage de transformation (200) ayant un primaire à au moins deux premier (9) et second (12) enroulements et un secondaire à au moins un enroulement (16),  a transformation winding (200) having a primary with at least two first (9) and second (12) windings and a secondary with at least one winding (16),
un transistor (300) à trois première (22), deuxième (23) et troisième (24) électrodes,  a transistor (300) with three first (22), second (23) and third (24) electrodes,
des premiers moyens de connexion de ladite borne de potentiel d'alimentation (1) à une première extrémité (10) dudit premier enroulement (9) du primaire,  first means for connecting said supply potential terminal (1) to a first end (10) of said first winding (9) of the primary,
des deuxièmes moyens de connexion de la deuxième extrémité (11) dudit premier enroulement (9) dudit primaire à une première électrode (22) dudit transistor,  second means for connecting the second end (11) of said first winding (9) of said primary to a first electrode (22) of said transistor,
des troisièmes moyens de connexion de la deuxième électrode third means of connection of the second electrode
(23) dudit transistor à une première extrémité (13) dudit second enroulement (12) du primaire, (23) of said transistor at a first end (13) of said second winding (12) of the primary,
une capacité de charge (25),  a load capacity (25),
des quatrièmes moyens de connexion de la deuxième extrémité (14) dudit second enroulement (12) dudit primaire à une borne (26) de ladite capacité de charge,  fourth means for connecting the second end (14) of said second winding (12) of said primary to a terminal (26) of said load capacity,
des cinquièmes moyens de connexion de l'autre borne (27) de ladite capacité de charge à ladite borne (2) de potentiel de référence,  fifth means for connecting the other terminal (27) of said load capacity to said terminal (2) of reference potential,
des sixièmes moyens de connexion de la troisième électrode sixth means of connection of the third electrode
(24) dudit transistor (300) à ladite borne de potentiel de référence (2), (24) from said transistor (300) to said reference potential terminal (2),
des moyens résistifs (400) aptes à relier ladite borne de potentiel d'alimentation (1) à ladite borne (26) de ladite capacité de charge qui est reliée à la deuxième extrémité (14) du deuxième enroulement (12) du primaire, resistive means (400) capable of connecting said supply potential terminal (1) to said terminal (26) of said capacitance load which is connected to the second end (14) of the second winding (12) of the primary,
une enceinte étanche (19) contenant un gaz, ladite enceinte comportant deux électrodes simples de sortie (20,21), et  a sealed enclosure (19) containing a gas, said enclosure comprising two simple output electrodes (20,21), and
des septièmes moyens de connexion des deux bornes de sortie des deux dites électrodes simples de l'enceinte, respectivement aux deux dites extrémités (17,18) dudit enroulement secondaire (16).  seventh means of connection of the two output terminals of the two said simple electrodes of the enclosure, respectively at the two said ends (17,18) of said secondary winding (16).
2. Source selon la revendication 1, caractérisée par le fait que lesdits premiers moyens de connexion de ladite borne de potentiel d'alimentation (1) à une première extrémité (10) dudit premier enroulement (9) du primaire comportent au moins une diode électronique (6) dont l'anode (7) est reliée à ladite borne de potentiel d'alimentation (1) et dont la cathode (8) est reliée à ladite première extrémité (10) du premier enroulement (9) du primaire.  2. Source according to claim 1, characterized in that said first means of connection of said supply potential terminal (1) at a first end (10) of said first winding (9) of the primary comprises at least one electronic diode (6) whose anode (7) is connected to said supply potential terminal (1) and whose cathode (8) is connected to said first end (10) of the first winding (9) of the primary.
3. Source selon la revendication 1, caractérisée par le fait que lesdits moyens résistifs (400) aptes à relier ladite borne de potentiel d'alimentation (1) à ladite borne (26) de ladite capacité de charge qui est reliée à la deuxième extrémité (14) du second enroulement (12) du primaire sont constitués par un potentiomètre.  3. Source according to claim 1, characterized in that said resistive means (400) capable of connecting said supply potential terminal (1) to said terminal (26) of said load capacity which is connected to the second end (14) of the second winding (12) of the primary consist of a potentiometer.
4. Source selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte une capacité de filtrage (3) dont les deux bornes (4,5) sont respectivement reliées aux deux bornes de potentiel (1,2).  4. Source according to one of the preceding claims, characterized in that it comprises a filtering capacity (3) whose two terminals (4,5) are respectively connected to the two potential terminals (1,2).
5. Source selon les revendications 2 et 4, caractérisée par le fait que l'une (4) des deux bornes de la capacité de filtrage (3) est reliée à la cathode (8) de ladite diode (6).  5. Source according to claims 2 and 4, characterized in that one (4) of the two terminals of the filtering capacity (3) is connected to the cathode (8) of said diode (6).
6. Source selon l'une des revendications précédentes, caractérisée par le fait que ledit transistor (300) est du type NPN, lesdites première (22), deuxième (23) et troisième (24) électrodes étant alors respectivement la base, le collecteur et l'émetteur du transistor.  6. Source according to one of the preceding claims, characterized in that said transistor (300) is of the NPN type, said first (22), second (23) and third (24) electrodes then being respectively the base, the collector and the emitter of the transistor.
7. Source selon l'une des revendications précédentes, caractérisée par le fait que ladite enceinte (19) est en un matériau transparent aux ondes du domaine du visible.  7. Source according to one of the preceding claims, characterized in that said enclosure (19) is made of a material transparent to waves in the visible range.
8. Source selon la revendication 7, caractérisée par le fait que la surface intérieure de ladite enceinte comporte un matériau fluorescent. 8. Source according to claim 7, characterized in that the inner surface of said enclosure comprises a material fluorescent.
9. Source selon l'une des revendications précédentes, caractérisée par le fait que ladite enceinte (19) enferme un gaz rare tel que du néon, de l'argon, de l'hélium.  9. Source according to one of the preceding claims, characterized in that said enclosure (19) encloses a rare gas such as neon, argon, helium.
10. Source selon l'une des revendications précédentes, caractérisée par le fait que lesdits enroulements (9,12,16) sont couplés par une ferrite (15).  10. Source according to one of the preceding claims, characterized in that said windings (9,12,16) are coupled by a ferrite (15).
EP90902280A 1989-01-31 1990-01-26 Gas-enclosure lighting device Withdrawn EP0414840A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8901154A FR2642604B1 (en) 1989-01-31 1989-01-31 LIGHTING DEVICE WITH GAS ENCLOSURES
FR8901154 1989-01-31

Publications (1)

Publication Number Publication Date
EP0414840A1 true EP0414840A1 (en) 1991-03-06

Family

ID=9378274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90902280A Withdrawn EP0414840A1 (en) 1989-01-31 1990-01-26 Gas-enclosure lighting device

Country Status (7)

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US (1) US5130609A (en)
EP (1) EP0414840A1 (en)
JP (1) JPH04501932A (en)
AU (2) AU5026190A (en)
CA (1) CA2026319A1 (en)
FR (1) FR2642604B1 (en)
WO (1) WO1990009088A1 (en)

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US5610477A (en) * 1994-04-26 1997-03-11 Mra Technology Group Low breakdown voltage gas discharge device and methods of manufacture and operation
SE518667C2 (en) * 2001-03-29 2002-11-05 Apra Light Ab Energy saving system for ignition, operation and extinguishing of connected gas discharge lamps.

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US2982881A (en) * 1958-05-22 1961-05-02 Robert W Reich Portable light source
US3249892A (en) * 1963-12-30 1966-05-03 John Van Geen Oscillator with current responsive electroplated variable resistance controlling frequency and amplitude
US3417306A (en) * 1965-02-09 1968-12-17 Bendix Corp Regulated voltage capacitor discharge circuit
US3448335A (en) * 1966-07-22 1969-06-03 Trak Microwave Corp High frequency ac-dc fluorescent lamp driver circuit
FR2176507B3 (en) * 1972-03-21 1975-04-25 Abadie Henri
DE2442091A1 (en) * 1974-09-03 1976-03-18 Hoerner Fa Eugen Constant current supply for gas discharge lamps - uses relaxation oscillator and is independent of number or length of discharge tubes in circuit
ES435042A1 (en) * 1975-02-24 1976-12-01 Fernandez Olivella Improvements in the activation of discharge lamps. (Machine-translation by Google Translate, not legally binding)
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FR2595531B1 (en) * 1986-03-06 1990-04-20 Naudy Annick DEVICE FOR SUPPLYING ELECTRICAL POWER TO A LOW-POWER FLUORESCENT TUBE AND A METHOD OF USING SUCH A DEVICE
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Also Published As

Publication number Publication date
JPH04501932A (en) 1992-04-02
US5130609A (en) 1992-07-14
AU3851093A (en) 1993-07-22
CA2026319A1 (en) 1990-08-01
AU5026190A (en) 1990-08-24
FR2642604B1 (en) 1991-05-10
WO1990009088A1 (en) 1990-08-09
FR2642604A1 (en) 1990-08-03

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