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EP0541413A1 - Device for reducing the energy consumption of a light tube without modifying its luminosity - Google Patents

Device for reducing the energy consumption of a light tube without modifying its luminosity Download PDF

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Publication number
EP0541413A1
EP0541413A1 EP92402759A EP92402759A EP0541413A1 EP 0541413 A1 EP0541413 A1 EP 0541413A1 EP 92402759 A EP92402759 A EP 92402759A EP 92402759 A EP92402759 A EP 92402759A EP 0541413 A1 EP0541413 A1 EP 0541413A1
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EP
European Patent Office
Prior art keywords
lampshade
tube
fluorescent tube
reducing
glass
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
Application number
EP92402759A
Other languages
German (de)
French (fr)
Other versions
EP0541413B1 (en
Inventor
Norberto Miguel Mulieri
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.)
Compania Kelmas SA
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Compania Kelmas SA
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Filing date
Publication date
Application filed by Compania Kelmas SA filed Critical Compania Kelmas SA
Publication of EP0541413A1 publication Critical patent/EP0541413A1/en
Application granted granted Critical
Publication of EP0541413B1 publication Critical patent/EP0541413B1/en
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
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/025—Associated optical elements
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Definitions

  • the present invention relates to a device applicable to gas discharge tube lamps, which makes it possible to reduce active energy consumption by 40% without modifying the luminous flux of the tube on which it is mounted, and which, in addition , reduces environmental contamination by ultraviolet radiation.
  • ultraviolet rays electromagnetic radiation which has a wavelength between 100 and 400 nm (nanometers).
  • UV-A rays are invisible and fall into three bands: long waves, called UV-A rays, from 315 to 400 nm, medium waves, UV-B rays, from 280 to 315 nm and short waves, UV-C rays, from 100 to 280 nm.
  • the radiation from the UV-A band passes through almost all types of glass and practically does not cause erythema (redness of human skin). It has the property of causing the fluorescence of certain materials and of causing photochemical reactions, among others.
  • the radiation from the UV-B band causes erythema and pigmentation (tanning) effects on the skin. These radiations are used mainly for therapeutic purposes (solar lights).
  • the radiation from the UV-C band which has its maximum efficiency around 254 nm in wavelength, can give rise to fluorescence phenomena in certain materials and cause erythema and conjunctivitis.
  • the bands “A” and “B” pass through almost all types of glass and the short band, or "C”, is the one that excites and produces the greatest photonic effect on phosphorus, causing the emission of light photons.
  • the point of greatest photon production is more specifically at the 253.7 nm wavelength; this is the effect you get in the ionized cavity tubes by electronic bombardment.
  • the tube manufacturers have made various attempts to increase the brightness of these tubes and, for this, they provide the tubes with a reflective layer placed inside the glass of this tube, but without thereby obtaining a significant increase in the luminous flux, nor any additional advantage.
  • the aim of the present invention is therefore to achieve better exploitation of ultraviolet radiation in fluorescent tubes so as to obtain an increase in the luminous flux of this radiation, and to achieve a considerable reduction in the energy consumption for a luminous flux equivalent to the original flow indicated in the catalog.
  • the present invention therefore relates to a device applicable to fluorescent tubes, capable of reducing energy consumption without modifying the light flux of these tubes, characterized in that it is composed of a reflective lampshade, the diameter of which inside coincides with the outside diameter of the glass of the fluorescent tube, and which has an arc-shaped section, and which is associated with a step-down element, equipped with means for connecting to the terminals of the fluorescent tube.
  • the phosphor and glass envelopes produce a 90% attenuation of the light passing through them, and it is therefore the ultraviolet rays in the large and medium bands (A + B) which, once again crossing the envelopes, produce excess luminous flux.
  • FIGS. 1 and 2 show a fluorescent tube 1, the upper half-cylinder 3 of which has been covered with a lampshade 5, the reflecting surface of which is in contact with the external surface of the glass of this half-cylinder 3, the half lower cylinder 2 remaining as light emitting surface.
  • This lampshade 5 is preferably formed of treated aluminum, alone, or of aluminum plus a plaster reticle, which may also be of aluminum varnish, alone or supplemented with a plaster reticle, with plastic. aluminized and / or screen printing of plaster, etc.
  • This lampshade 5 which allows the photonic irradiation process of phosphorus to be fully realized under the effect of UV rays (medium and low waves) which have escaped through the thin layer of phosphates and which have passed through the glass of the upper half-cylinder 3 and are returned towards the inside of the tube 1 by the reflecting surface of the lampshade 5.
  • the "window" or the lower half-cylinder 2 which results from the presence of the external lampshade 5, which is printed or glued to the tube 1 and covers the most adequate percentage of dimensions (relative to the perimeter of the tube), makes it possible to obtain a light concentration in the window, or in the lower half-cylinder 2, which responds to high efficiency curves (UV-light conversion).
  • UV-light conversion high efficiency curves
  • Said step-down element can be constituted by a resistant element integrated into the lampshade 5 and which is preferably constituted by a printed resistance made of metal or of a resistant material of the type of baked semiconductor resins, and glued to the glass on its outer wall, on the aluminum sheet, on plastic or rigid bases of the alumina type, possibly with a flat capacitor which can be glued to said lampshade 5 or glued to the support element 7 It can also be composed, among other things, of a self-transformer or a resistive element and a capacitor connected in series, or it can include a capacitor associated with a timer connected to a connected triac and a coil serial.
  • This step-down element is connected to the terminals 4 of the fluorescent tube 1, using connection means which are preferably composed of insulated conductors, not shown.
  • the tubes can be lit without needing the reactance usually used for this.
  • a second preferred embodiment of the invention which is shown in FIGS. 3 and 4, is that in which the reflective lampshade 5 ′ is provided on its internal surface with a support element 7 whose diameter coincides with the diameter of the tube 1, and is further provided with fins 6 which direct the light flux which exits through the half-cylinder 2.
  • said lampshade 5 ' is incorporated any one of the abovementioned voltage-reducing elements, which is connected to the terminals 4 of the tube by means of connection means not shown.
  • This 5 'lampshade can be easily applied to already existing domestic installations.
  • An additional advantage which is obtained by working under low voltage, that is to say around 170 V, consists in that the tube works at temperature regimes between 25 and 30 ° C., in an ambient temperature of 23 ° C. Working at these temperatures lengthens the useful life of the tube and is very advantageous for obtaining better lighting, since it is the ideal temperature range indicated by the manufacturers for the production of UV in the tubes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

This device comprises a lampshade (5) covering the upper half of a fluorescent tube (1), its internal diameter coinciding with the external diameter of the glass of the tube, and this lampshade being associated with a step-down transformer connected to the terminals (4) of the tube. <IMAGE>

Description

La présente invention se rapporte à un dispositif applicable aux lampes à tube à décharge dans un gaz, qui permet de réduire de 40 % la consommation d'énergie active sans modification du flux lumineux du tube sur lequel il est monté, et qui, en outre, réduit la contamination de l'environnement par rayonnement de rayons ultraviolets.The present invention relates to a device applicable to gas discharge tube lamps, which makes it possible to reduce active energy consumption by 40% without modifying the luminous flux of the tube on which it is mounted, and which, in addition , reduces environmental contamination by ultraviolet radiation.

On entend par rayons ultraviolets les radiations électromagnétiques qui ont une longueur d'onde comprise entre 100 et 400 nm (nanomètres).By ultraviolet rays is meant electromagnetic radiation which has a wavelength between 100 and 400 nm (nanometers).

Les rayons ultraviolets sont invisibles et se classent en trois bandes : grandes ondes, appelées rayons UV-A, de 315 à 400 nm, ondes moyennes, rayons UV-B, de 280 à 315 nm et ondes courtes, rayons UV-C, de 100 à 280 nm.Ultraviolet rays are invisible and fall into three bands: long waves, called UV-A rays, from 315 to 400 nm, medium waves, UV-B rays, from 280 to 315 nm and short waves, UV-C rays, from 100 to 280 nm.

Le rayonnement de la bande UV-A traverse presque tous les types de verre et ne provoque pratiquement pas d'érythème (rougeur de la peau humaine). Il possède la propriété de provoquer la fluorescence de certaines matières et de provoquer des réactions photochimiques, entre autres. Le rayonnement de la bande UV-B provoque des effets d'érythème et de pigmentation (bronzage) de la peau. Ces rayonnements sont utilisés principalement à des fins thérapeutiques (lampes solaires). Le rayonnement de la bande UV-C, qui a son efficacité maximale aux alentours de 254 nm de longueur d'onde, peut donner lieu à des phénomènes de fluorescence dans certaines matières et provoquer des érythèmes et de la conjonctivite.The radiation from the UV-A band passes through almost all types of glass and practically does not cause erythema (redness of human skin). It has the property of causing the fluorescence of certain materials and of causing photochemical reactions, among others. The radiation from the UV-B band causes erythema and pigmentation (tanning) effects on the skin. These radiations are used mainly for therapeutic purposes (solar lights). The radiation from the UV-C band, which has its maximum efficiency around 254 nm in wavelength, can give rise to fluorescence phenomena in certain materials and cause erythema and conjunctivitis.

Les bandes "A" et "B" traversent presque tous les types de verre et la bande courte, ou "C", est celle qui excite et produit le plus grand effet photonique sur le phosphore, en provoquant l'émission de photons lumineux.The bands "A" and "B" pass through almost all types of glass and the short band, or "C", is the one that excites and produces the greatest photonic effect on phosphorus, causing the emission of light photons.

Le point de plus grande production de photons se place plus spécifiquement aux 253,7 nm de longueur d'onde ; c'est l'effet qu'on obtient dans la cavité ionisée des tubes par bombardement électronique.The point of greatest photon production is more specifically at the 253.7 nm wavelength; this is the effect you get in the ionized cavity tubes by electronic bombardment.

Cet effet n'est pas pur et il se produit des pourcentages élevés d'autres longueurs d'onde d'UV dans les bandes courte, moyenne et grande, au-dessus et au-dessous de la valeur optimum de 253,7 nm, et qui se manifestent sous la forme d'harmoniques dans les bandes moyenne et grande, en atteignant même la plage lumineuse au-dessus des 400 nm. Ce pourcentage d'UV qui sont capables de traverser le verre du tube, et qui exigerait une couche plus épaisse de phosphore pour décharger son énergie, est perdue et ne contribue pas à la production photonique, de sorte qu'on n'obtient pas le rendement optimum du tube fluorescent.This effect is not pure and high percentages of other UV wavelengths occur in the short, medium and long bands, above and below the optimum value of 253.7 nm, and which appear as harmonics in the medium and large bands, even reaching the light range above 400 nm. This percentage of UV which are able to pass through the glass of the tube, and which would require a thicker layer of phosphorus to discharge its energy, is lost and does not contribute to photonic production, so that one does not obtain the optimum efficiency of the fluorescent tube.

Les fabricants de tubes ont fait diverses tentatives pour augmenter la luminosité de ces tubes et, pour cela, ils munissent les tubes d'une couche réfléchissante disposée à l'intérieur du verre de ce tube, mais sans obtenir par ce moyen une augmentation notable du flux lumineux, ni aucun avantage additionnel.The tube manufacturers have made various attempts to increase the brightness of these tubes and, for this, they provide the tubes with a reflective layer placed inside the glass of this tube, but without thereby obtaining a significant increase in the luminous flux, nor any additional advantage.

Le but de la présente invention est donc de parvenir à une meilleure exploitation du rayonnement ultraviolet dans les tubes fluorescents de manière à obtenir une augmentation du flux lumineux de ce rayonnement, et de réaliser une réduction considérable de la consommation d'énergie pour un flux lumineux équivalent au flux d'origine indiqué au catalogue.The aim of the present invention is therefore to achieve better exploitation of ultraviolet radiation in fluorescent tubes so as to obtain an increase in the luminous flux of this radiation, and to achieve a considerable reduction in the energy consumption for a luminous flux equivalent to the original flow indicated in the catalog.

La présente invention a donc pour objet un dispositif applicable aux tubes fluorescents, capable de réduire la consommation d'énergie sans modifier le flux lumineux de ces tubes, caractérisé en ce qu'il est composé d'un abat-jour réfléchissant, dont le diamètre intérieur coïncide avec le diamètre extérieur du verre du tube fluorescent, et qui possède une section en forme d'arc, et auquel est associé un élément abaisseur de tension, équipé de moyens pour se connecter aux bornes du tube fluorescent.The present invention therefore relates to a device applicable to fluorescent tubes, capable of reducing energy consumption without modifying the light flux of these tubes, characterized in that it is composed of a reflective lampshade, the diameter of which inside coincides with the outside diameter of the glass of the fluorescent tube, and which has an arc-shaped section, and which is associated with a step-down element, equipped with means for connecting to the terminals of the fluorescent tube.

Dans les tubes classiques, les enveloppes de phosphore et de verre produisent une atténuation de 90 % de la lumière qui les traverse, et ce sont donc les rayons ultraviolets dans les bandes grande et moyenne (A + B) qui, en traversant de nouveau les enveloppes, produisent le flux lumineux excédentaire.In conventional tubes, the phosphor and glass envelopes produce a 90% attenuation of the light passing through them, and it is therefore the ultraviolet rays in the large and medium bands (A + B) which, once again crossing the envelopes, produce excess luminous flux.

Avec le dispositif de la présente invention, il se produit un recyclage des rayons ultraviolets dans le tube par effet réflecteur.With the device of the present invention, there is a recycling of ultraviolet rays in the tube by reflective effect.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre, d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels,

  • la figure 1 est une vue de côté d'un tube fluorescent équipé du dispositif selon l'invention ;
  • la figure 2 est une coupe selon la ligne A-A du tube de la figure 1 ;
  • la figure 3 représente une seconde forme de réalisation du dispositif selon l'invention ; et
  • la figure 4 représente une vue en coupe du dispositif selon l'invention, représenté sur la figure 3, monté sur un tube.
Other characteristics and advantages of the invention will be better understood on reading the description which follows, of an exemplary embodiment and with reference to the appended drawings in which,
  • Figure 1 is a side view of a fluorescent tube equipped with the device according to the invention;
  • Figure 2 is a section along line AA of the tube of Figure 1;
  • FIG. 3 represents a second embodiment of the device according to the invention; and
  • 4 shows a sectional view of the device according to the invention, shown in Figure 3, mounted on a tube.

Les figures 1 et 2 montrent un tube fluorescent 1 dont le demi-cylindre supérieur 3 a été recouvert d'un abat-jour 5 dont la surface réfléchissante est en contact avec la surface extérieure du verre de ce demi-cylindre 3, le demi-cylindre inférieur 2 restant comme surface émissive de lumière. Cet abat-jour 5 est formé de préférence d'aluminium traité, seul, ou d'aluminium plus un réticule de plâtre, qui peut aussi être de vernis à l'aluminium, seul ou complété d'un réticule de plâtre, avec du plastique aluminié et/ou d'une impression sérigraphique de plâtre, etc..FIGS. 1 and 2 show a fluorescent tube 1, the upper half-cylinder 3 of which has been covered with a lampshade 5, the reflecting surface of which is in contact with the external surface of the glass of this half-cylinder 3, the half lower cylinder 2 remaining as light emitting surface. This lampshade 5 is preferably formed of treated aluminum, alone, or of aluminum plus a plaster reticle, which may also be of aluminum varnish, alone or supplemented with a plaster reticle, with plastic. aluminized and / or screen printing of plaster, etc.

Cet abat-jour 5, qui permet au processus d'irradiation photonique du phosphore de se réaliser pleinement sous l'effet des rayons UV (ondes moyennes et basses) qui se sont échappés à travers la fine couche de phosphates et qui ont traversé le verre du demi-cylindre supérieur 3 et sont renvoyés vers l'intérieur du tube 1 par la surface réfléchissante de l'abat-jour 5.This lampshade 5, which allows the photonic irradiation process of phosphorus to be fully realized under the effect of UV rays (medium and low waves) which have escaped through the thin layer of phosphates and which have passed through the glass of the upper half-cylinder 3 and are returned towards the inside of the tube 1 by the reflecting surface of the lampshade 5.

De cette façon, on profite de façon optimale de la capacité lumineuse du tube, dont les rayons UV peuvent être orientés, concentrés et recyclés dans un seul et même sens au moyen de l'abat-jour 5, en attaquant le phosphore à trois occasions : la première en sortant à travers le demi-cylindre supérieur 3 ; la seconde, lorsque les rayons sont réfléchis vers l'intérieur par l'abat-jour 5 du demi-cylindre supérieur 3 et la troisième, en sortant à travers le demi-cylindre inférieur 2. La "fenêtre" ou le demi-cylindre inférieur 2, qui résulte de la présence de l'abat-jour extérieur 5, qui est imprimé ou collé au tube 1 et couvre le pourcentage de dimensions (par rapport au périmètre du tube) le plus adéquat, permet d'obtenir une concentration lumineuse dans la fenêtre, ou dans le demi-cylindre inférieur 2, ce qui répond à des courbes de rendement élevé (conversion UV-lumière). Après avoir obtenu cet effet de concentration, c'est-à-dire en tirant parti des rayons UV de grandes ondes et d'ondes moyennes, qui peuvent traverser le verre du tube 1 et en les faisant rentrer par l'action réfléchissante de l'abat-jour 5, on a modifié les résultats habituels dans une mesure convaincante et efficace.In this way, we optimally take advantage of the light capacity of the tube, whose UV rays can be oriented, concentrated and recycled in one and the same direction by means of the lampshade 5, attacking the phosphorus on three occasions : the first exiting through the upper half-cylinder 3; the second, when the rays are reflected towards the inside by the lampshade 5 of the upper half-cylinder 3 and the third, coming out through the lower half-cylinder 2. The "window" or the lower half-cylinder 2, which results from the presence of the external lampshade 5, which is printed or glued to the tube 1 and covers the most adequate percentage of dimensions (relative to the perimeter of the tube), makes it possible to obtain a light concentration in the window, or in the lower half-cylinder 2, which responds to high efficiency curves (UV-light conversion). After having obtained this effect of concentration, that is to say by taking advantage of the UV rays of large waves and medium waves, which can pass through the glass of the tube 1 and by making them return by the reflecting action of l 'lampshade 5, the usual results have been modified to a convincing and effective extent.

On obtient de cette façon un rendement lumineux qui, selon les mesures effectuées, atteint jusqu'à une amélioration de 100 % des valeurs annoncées par le catalogue.In this way a light output is obtained which, according to the measurements carried out, reaches up to a 100% improvement in the values announced in the catalog.

Si, dans l'application de l'invention, on travaille sous une tension de 220 V, qui est habituelle on provoque une augmentation excessive de la température du tube 1, qui dépasse alors les 55°C (qui est la température normale de travail) et atteint jusqu'à 65 ou 70°C. Etant donné que ceci raccourcirait sensiblement la durée de vie utile du tube fluorescent et annulerait l'effet recherché, et en outre, abaisserait la production de UV, lorsqu'on sort du niveau idéal de température, qui est de 25 à 35 degrés Celsius, il est nécessaire d'associer à l'abat-jour 5 un élément abaisseur de tension, non représenté, qui abaisse la tension de travail à 170 V.If, in the application of the invention, one works under a voltage of 220 V, which is usual one causes an excessive increase in the temperature of the tube 1, which then exceeds 55 ° C (which is the normal working temperature ) and reaches up to 65 or 70 ° C. Since this would significantly shorten the useful life of the fluorescent tube and cancel out the desired effect, and furthermore would lower UV production when you get out of the ideal temperature level, which is 25 to 35 degrees Celsius, it is necessary to associate with the lampshade 5 a step-down element, not shown, which lowers the working voltage to 170 V.

Ledit élément abaisseur de tension peut être constitué par un élément résistant intégré à l'abat-jour 5 et qui est de préférence constitué par une résistance imprimée faite de métal ou d'une matière résistante du type des résines semi-conductrices cuites, et collé au verre sur sa paroi extérieure, sur la tôle d'aluminium, sur des bases plastiques ou rigides du type de l'alumine, éventuellement avec un condensateur plat qui peut être collé audit abat-jour 5 ou collé sur l'élément de support 7. Il peut aussi être composé, entre autres, d'un auto-transformateur ou d'un élément résistant et d'un condensateur connectés en série, ou encore il peut comprendre un condensateur associé à un temporisateur connecté à un triac et une bobine connectés en série. Cet élément abaisseur de tension est connecté aux bornes 4 du tube fluorescent 1, à l'aide de moyens de connexion qui sont de préférence composés de conducteurs isolés, non représentés.Said step-down element can be constituted by a resistant element integrated into the lampshade 5 and which is preferably constituted by a printed resistance made of metal or of a resistant material of the type of baked semiconductor resins, and glued to the glass on its outer wall, on the aluminum sheet, on plastic or rigid bases of the alumina type, possibly with a flat capacitor which can be glued to said lampshade 5 or glued to the support element 7 It can also be composed, among other things, of a self-transformer or a resistive element and a capacitor connected in series, or it can include a capacitor associated with a timer connected to a connected triac and a coil serial. This step-down element is connected to the terminals 4 of the fluorescent tube 1, using connection means which are preferably composed of insulated conductors, not shown.

Ceci signifie qu'en utilisant le dispositif selon l'invention, on peut travailler avec une tension d'alimentation plus basse pour obtenir un nombre de lumens égal à celui que le tube fluorescent avait avant le montage du dispositif selon l'invention. Toutefois, sans modifier le flux lumineux d'origine, en travaillant avec seulement 170 V de tension d'alimentation, on obtient une importante réduction de la consommation d'énergie.This means that by using the device according to the invention, one can work with a lower supply voltage to obtain a number of lumens equal to that which the fluorescent tube had before the assembly of the device according to the invention. However, without modifying the original luminous flux, by working with only 170 V of supply voltage, a significant reduction in energy consumption is obtained.

On a aussi découvert qu'avec le dispositif selon l'invention, on peut allumer les tubes sans avoir besoin de la réactance utilisée habituellement pour cela.It has also been discovered that with the device according to the invention, the tubes can be lit without needing the reactance usually used for this.

On a réalisé des mesures dans lequelles la consommation normale d'un tube de 40 W travaillant à 220 V, est de 420 à 440 mA en moyenne. A ce même tube, on a appliqué le dispositif selon l'invention et, pour un même niveau de flux lumineux, à 170 V de tension d'alimentation, les mesures ont indiqué une réduction du courant de travail de l'ordre de 200 mA.Measurements have been made in which the normal consumption of a 40 W tube working at 220 V is 420 to 440 mA on average. To this same tube, the device according to the invention was applied and, for the same level of luminous flux, at 170 V of supply voltage, the measurements indicated a reduction in the working current of the order of 200 mA .

Ceci signifie que, pour un même niveau d'éclairage, on obtient des réductions d'énergie d'environ 50%.This means that, for the same lighting level, energy reductions of around 50% are obtained.

Une seconde forme de réalisation préférée de l'invention qui est représentée sur les figures 3 et 4, est celle dans laquelle l'abat-jour réfléchissant 5' est muni sur sa surface intérieure d'un élément de support 7 dont le diamètre coïncide avec le diamètre du tube 1, et est muni en outre d'ailettes 6 qui orientent le flux lumineux qui sort par le demi-cylindre 2.A second preferred embodiment of the invention which is shown in FIGS. 3 and 4, is that in which the reflective lampshade 5 ′ is provided on its internal surface with a support element 7 whose diameter coincides with the diameter of the tube 1, and is further provided with fins 6 which direct the light flux which exits through the half-cylinder 2.

Dans ledit abat-jour 5' est incorporé l'un quelconque des éléments abaisseurs de tension précités, qui se connecte aux bornes 4 du tube à l'aide de moyens de connexion non représentés.In said lampshade 5 'is incorporated any one of the abovementioned voltage-reducing elements, which is connected to the terminals 4 of the tube by means of connection means not shown.

Cet abat-jour 5' peut être appliqué facilement aux installations domestiques déjà existantes.This 5 'lampshade can be easily applied to already existing domestic installations.

Un avantage additionnel qu'on obtient en travaillant sous basse tension, c'est-à-dire aux environs de 170 V, consiste en ce que le tube travaille à des régimes de température entre 25 et 30°C, dans une température ambiante de 23°C. Le fait de travailler à ces températures allonge la vie utile du tube et est très avantageux pour obtenir un meilleur éclairage, puisque c'est la plage idéale de température indiquée par les fabricants pour la production de UV dans les tubes.An additional advantage which is obtained by working under low voltage, that is to say around 170 V, consists in that the tube works at temperature regimes between 25 and 30 ° C., in an ambient temperature of 23 ° C. Working at these temperatures lengthens the useful life of the tube and is very advantageous for obtaining better lighting, since it is the ideal temperature range indicated by the manufacturers for the production of UV in the tubes.

Bien entendu, diverses modifications peuvent être apportées par l'homme d'art au dispositif qui vient d'être décrit à titre d'exemple non limitatif sans sortir du cadre de l'invention.Of course, various modifications can be made by those skilled in the art to the device which has just been described by way of nonlimiting example without departing from the scope of the invention.

Claims (11)

Dispositif, applicable à des tubes fluorescents, capable de réduire la consommation d'énergie sans modifier le flux lumineux de ces tubes, caractérisé en ce qu'il est composé d'un abat-jour réfléchissant (5), dont le diamètre intérieur minimum coïncide avec le diamètre extérieur du verre du tube fluorescent (1) et qui possède une section ayant sensiblement la forme d'un arc, et auquel est associé un élément abaisseur de tension équipé de moyens pour se connecter aux bornes (4) du tube fluorescent.Device, applicable to fluorescent tubes, capable of reducing energy consumption without modifying the luminous flux of these tubes, characterized in that it is composed of a reflective lampshade (5), the minimum internal diameter of which coincides with the outside diameter of the glass of the fluorescent tube (1) and which has a section having substantially the shape of an arc, and with which is associated a step-down element equipped with means for connecting to the terminals (4) of the fluorescent tube. Dispositif selon la revendication 1, caractérisé en ce que ledit abat-jour (5) est intégré au verre du tube fluorescent (1).Device according to claim 1, characterized in that said lampshade (5) is integrated into the glass of the fluorescent tube (1). Dispositif selon la revendication 1, caractérisé en ce que ledit abat-jour (5) est en coïncidence avec le tube fluorescent et appuyé sur ce dernier.Device according to claim 1, characterized in that said lampshade (5) is in coincidence with the fluorescent tube and supported on the latter. Dispositif selon la revendication 3, caractérisé en ce que ledit abat-jour (5) est muni d'ailettes d'orientation du flux lumineux.Device according to claim 3, characterized in that said lampshade (5) is provided with fins for orienting the light flux. Dispositif selon la revendication 1, caractérisé en ce que ledit abat-jour (5) est construit en aluminium traité, en aluminium et/ou réticule de plâtre, vernis d'aluminium et/ou réticule de plâtre, matière plastique aluminiée et/ou réticule de plâtre ou équivalents.Device according to claim 1, characterized in that said lampshade (5) is constructed from treated aluminum, aluminum and / or plaster reticle, aluminum varnish and / or plaster reticle, aluminized plastic and / or reticle plaster or equivalent. Dispositif selon la revendication 1, caractérisé en ce que ledit élément abaisseur de tension est composé d'une résistance imprimée en métal ou matière résistante.Device according to claim 1, characterized in that said tension-reducing element is composed of a printed resistance of metal or resistant material. Dispositif selon la revendication 6, caractérisé en ce que ladite matière résistante est du type des résistances semi-conductrices cuites.Device according to claim 6, characterized in that said resistant material is of the type of baked semiconductor resistors. Dispositif selon la revendication 1, caractérisé en ce que ledit élément abaisseur de tension est un condensateur associé à un temporisateur connecté à un triac et une bobine connectés en série.Device according to claim 1, characterized in that said tension-reducing element is a capacitor associated with a timer connected to a triac and a coil connected in series. Dispositif selon la revendication 1, caractérisé en ce que ledit élément abaisseur de tension est constitué par un élément résistant et un condensateur connectés en série.Device according to claim 1, characterized in that said step-down element consists of a resistive element and a capacitor connected in series. Dispositif selon la revendication 1, caractérisé en ce que ledit abaisseur de tension est un autotransformateur.Device according to claim 1, characterized in that said step-down is an autotransformer. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que ledit arc coïncide sensiblement avec la moitié de la surface extérieure du tube.Device according to any one of the preceding claims, characterized in that the said arc substantially coincides with half of the external surface of the tube.
EP92402759A 1991-10-09 1992-10-09 Device for reducing the energy consumption of a light tube without modifying its luminosity Expired - Lifetime EP0541413B1 (en)

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AR320880 1991-10-09
AR32088091 1991-10-09

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US7573201B2 (en) 2004-09-29 2009-08-11 Osram Gesellschaft Mit Beschraenkter Haftung Dielectric barrier discharge lamp having pluggable electrodes

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US7573201B2 (en) 2004-09-29 2009-08-11 Osram Gesellschaft Mit Beschraenkter Haftung Dielectric barrier discharge lamp having pluggable electrodes

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EP0541413B1 (en) 1997-01-08
MX9205814A (en) 1993-07-01
DE69216557D1 (en) 1997-02-20
ES2098474T3 (en) 1997-05-01
BR9203952A (en) 1993-04-27
US5343120A (en) 1994-08-30
ZA927756B (en) 1993-07-12
DE69216557T2 (en) 1997-06-12
JPH05347138A (en) 1993-12-27

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