EP0066495A2 - Discharge lamp of the cold-cathode type bent about two levels - Google Patents

Discharge lamp of the cold-cathode type bent about two levels Download PDF

Info

Publication number
EP0066495A2
EP0066495A2 EP82400898A EP82400898A EP0066495A2 EP 0066495 A2 EP0066495 A2 EP 0066495A2 EP 82400898 A EP82400898 A EP 82400898A EP 82400898 A EP82400898 A EP 82400898A EP 0066495 A2 EP0066495 A2 EP 0066495A2
Authority
EP
European Patent Office
Prior art keywords
tube
discharge lamp
bent
lamp
cold
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
EP82400898A
Other languages
German (de)
French (fr)
Other versions
EP0066495B1 (en
EP0066495A3 (en
Inventor
Raymond Desplat
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 AT82400898T priority Critical patent/ATE21187T1/en
Publication of EP0066495A2 publication Critical patent/EP0066495A2/en
Publication of EP0066495A3 publication Critical patent/EP0066495A3/en
Application granted granted Critical
Publication of EP0066495B1 publication Critical patent/EP0066495B1/en
Expired legal-status Critical Current

Links

Images

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/16—Vessels; Containers

Definitions

  • the present invention relates to a discharge lamp known as a cold cathode tube, with gas filling of the type consisting of a small diameter tube comprising at its two ends electrodes between which the high voltage discharge occurs.
  • Tubes of this kind are currently used routinely for the production of letters for illuminated signs and their use is tending to develop also as light sources for various traffic lights. Indeed, these high-voltage tubes have greater reliability than the incandescent lamps usually used in said signaling lights and a much longer service life.
  • these tubes have other advantages such as an excellent yield in coloring and in brightness and the absence of focusing optics.
  • the tube is shaped for its useful front part in the form of a meander or a spiral in a plane and the end bulbs containing the electrodes are bent behind the end of the useful front part of the tube.
  • the tubes being bent in a meander or wound in a spiral according to a ply in a plane and the manufacturing techniques obliging, in the case of a meander in particular, to maintain a minimum radius of curvature of the tube which is hardly less than half the diameter, the parallel branches of the meander are spaced at least half a diameter and most often the diameter, this spacing is also necessary for cooling.
  • the length of tube which can be accommodated in a given lamp surface is reduced and that miniaturized discharge lamps have a reduced lifetime compared to that of very long tubes. This problem is encountered in the case of miniaturized discharge lamps for repeating lights and so-called pedestrian lights, signaling lights as well as for various special purpose lamps.
  • the object of the present invention is to remedy these drawbacks and it relates to a discharge lamp of the cold cathode tube type, characterized in that the tube of circular section is, between the two electrodes, bent or curved according to two layers located in two close parallel planes, the layout of the tube in one layer being intercalated with the layout of the tube in the other layer.
  • the layout of the tube in a sheet is sufficiently dense, the observer placed substantially on a perpendicular to the planes of the sheets making up the lamp will simultaneously see the two lines of the tube in the two sheets. , which will give a uniform brightness over the entire surface occupied by the lamp.
  • the length of the tube being substantially equal to twice the length of the tube in a single ply of equivalent lamp surface, the life of the lamp is increased.
  • the second ply of the tube is substantially in the same plane as said bulbs so that the overall thickness of the lamp is not substantially amended.
  • the tube can be bent or bent in double meander or in double spiral but it is preferable in the case of a rectangular surface lamp to bend it in a flattened serpentine, the straight lengths of the tube joined by elbows in the oblique planes being alternately located in the front and in the rear.
  • the reference designates it the tube in the upper ply and the reference 1b the tube in the lower ply, 2 the bent parts joining parts of the tube lying in the two plies, 3a and 3b the bent parts joining parts of tube respectively located both in the upper layer and both in the lower layer and 4 designates the bulbs containing the electrodes.
  • lengths of tube 1a and 1b arranged in the two upper and lower plies succeed each other by being joined by bent portions 2, the bulbs 4 being placed at the two ends of the surface.
  • the lengths of tube 1a joined by bent parts 3a follow one another in the upper ply, the length of tube 1a lying on one edge of the ply being joined to the neighboring length 1b in the other ply by a bent part 2, said length lb being joined to the other lengths 1b of the lower ply by bent parts 3b.
  • the two bulbs 4 are located on the same side of the surface of the lamp.
  • the tube parts la and 3b are bent in a spiral and joined in the center by a bent part 2.
  • the bulbs 4 are placed at the free ends of the tube.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1. Discharge lamp of the cold cathode tube type, the tube of which is, between the two electrodes (4), folded over or curved according to two sheets (1a, 1b) located into two closely parallel planes, the layout of the tube in one sheet being intercalated with the layout of the tube in the other sheet so as to obtain a uniform luminosity on all the surface of the lamp.

Description

La présente invention concerne une lampe à décharge dite tube à cathode froide, avec remplissage gazeux du type constitué par un tube de faible diamètre comportant à ses deux extrémités des électrodes entre lesquelles se produit la décharge à haute tension. Des tubes de ce genre sont à l'heure actuelle utilisés de façon courante pour la réalisation de lettres pour enseignes lumineuses et leur usage tend à se développer également comme sources lumineuses pour les feux de signalisation divers. En effet ces tubes à haute tension présentent une plus grande fiabilité que les lampes à incandescence utilisées habituellement dans lesdits feux de signalisation et une beaucoup plus longue durée de vie. En outre ces tubes présentent d'autres avantages tels qu'un excellent rendement en coloration et en luminosité et l'absence d'optique de focalisation. En général le tube est conformé pour sa partie frontale utile sous forme de méandre ou de spirale dans un plan et les bulbes d'extrémité renfermant les électrodes sont recourbés derrière l'extrémité de la partie frontale utile du tube.The present invention relates to a discharge lamp known as a cold cathode tube, with gas filling of the type consisting of a small diameter tube comprising at its two ends electrodes between which the high voltage discharge occurs. Tubes of this kind are currently used routinely for the production of letters for illuminated signs and their use is tending to develop also as light sources for various traffic lights. Indeed, these high-voltage tubes have greater reliability than the incandescent lamps usually used in said signaling lights and a much longer service life. In addition, these tubes have other advantages such as an excellent yield in coloring and in brightness and the absence of focusing optics. In general, the tube is shaped for its useful front part in the form of a meander or a spiral in a plane and the end bulbs containing the electrodes are bent behind the end of the useful front part of the tube.

La durée de vie d'une telle lampe à décharge est conditionnée par l'absorption du gaz ionisé. En effet le rendement optimum est obtenu pour une pression donnée du gaz et l'absorption fait varier cette pression. L'absorption étant d'autant plus réduite que la surface d'échange thermique est plus grande, il en résulte que pour un diamètre donné il faut accroître la longueur du tube dans toute la mesure compatible avec l'encombrement autorisé pour la lampe. Les tubes étant pliés en méandre ou enroulés en spirale selon une nappe dans un plan et les techniques de fabrication obligeant, dans le cas d'un méandre notamment, à maintenir un rayon minimum de courbure du tube qui est difficilement inférieur au demi-diamètre, les branches parallèles du méandre sont écartées d'au moins un demi-diamètre et le plus souvent du diamètre,cet écartement étant également nécessaire pour le refroidissement. Il en résulte que la longueur de tube qu'il est possible de loger dans une surface de lampe donnée est réduite et que des lampes à décharge miniaturisées ont une durée de vie réduite par rapport à celle des tubes de grande longueur. Ce problème se rencontre dans le cas des lampes à décharge miniaturisées pour les feux de répétition et les feux dits piétons, des feux de signalisation ainsi que pour différentes lampes pour usages spéciaux.The life of such a discharge lamp is conditioned by the absorption of the ionized gas. In fact, the optimum efficiency is obtained for a given pressure of the gas and the absorption varies this pressure. The absorption being all the more reduced as the heat exchange surface is larger, it follows that for a given diameter it is necessary to increase the length of the tube to the fullest extent compatible with the space allowed for the lamp. The tubes being bent in a meander or wound in a spiral according to a ply in a plane and the manufacturing techniques obliging, in the case of a meander in particular, to maintain a minimum radius of curvature of the tube which is hardly less than half the diameter, the parallel branches of the meander are spaced at least half a diameter and most often the diameter, this spacing is also necessary for cooling. As a result, the length of tube which can be accommodated in a given lamp surface is reduced and that miniaturized discharge lamps have a reduced lifetime compared to that of very long tubes. This problem is encountered in the case of miniaturized discharge lamps for repeating lights and so-called pedestrian lights, signaling lights as well as for various special purpose lamps.

Un autre inconvénient de ces lampes est le caractère linéaire de la source lumineuse. La surface éclairante ayant l'aspect d'un trait large en méandre ou en spirale, la luminance ou brillance est réduite dans le rapport de la surface apparente du tube à la surface totale de la plage occupée par le tube. En outre l'aspect de la lampe qui peut être utilisée sans diffuseur, est peu esthétique du fait de l'aspect linéaire de la source. Dans le brevet U.S. N° 2.743.388 on a cherché à remédier à cet inconvénient en réalisant une lampe à brillance uniforme sur toute la surface mais le résultat a été obtenu en combinant deux tubes dont les sections non circulaires s'emboîtent pour donner une nappe sensiblement co-planaire. Cette solution nécessite deux tubes de sections spéciales et la fabrication est extrêmement complexe puisque les longueurs qui se recouvrent doivent être co-planaires.Another drawback of these lamps is the linear nature of the light source. The illuminating surface having the appearance of a wide meandering or spiral line, the luminance or brightness is reduced in the ratio of the apparent surface of the tube to the total surface of the area occupied by the tube. In addition, the appearance of the lamp, which can be used without a diffuser, is unattractive due to the linear appearance of the source. In US Patent No. 2,743,388 we sought to remedy this drawback by producing a lamp with uniform brightness over the entire surface but the result was obtained by combining two tubes whose non-circular sections fit together to give a sheet substantially co - planar. This solution requires two tubes of special sections and the manufacturing is extremely complex since the lengths overlapping must be co-planar.

La présente invention a pour but de remédier à ces inconvénients et elle a pour objet une lampe à décharge du type tube à cathode froide caractérisée en ce que le tube de section circulaire est, entre les deux électrodes, plié ou courbé selon deux nappes situées dans deux plans parallèles rapprochés, le tracé du tube dans une nappe s'intercalant avec le tracé du tube dans l'autre nappe. Avec cette disposition conforme à l'invention et sous réserve que le-tracé du tube dans une nappe soit suffisamment dense, l'observateur placé sensiblement sur une perpendiculaire aux plans des nappes constituant la lampe verra simultanément les deux tracés du tube dans les deux nappes, ce qui donnera une luminosité uniforme sur toute la surface occupée par la lampe. La longueur du tube étant sensiblement égale au double de la longueur du tube en simple nappe de surface de lampe équivalente, la durée de vie de la lampe est accrue. Les bulbes d'extrémité contenant les électrodes étant normalement recourbés derrière la partie frontale utile du tube, la deuxième nappe du tube se trouve sensiblement dans le même plan que lesdits bulbes de sorte que l'encombrement en épaisseur de la lampe n'est sensiblement pas modifié.The object of the present invention is to remedy these drawbacks and it relates to a discharge lamp of the cold cathode tube type, characterized in that the tube of circular section is, between the two electrodes, bent or curved according to two layers located in two close parallel planes, the layout of the tube in one layer being intercalated with the layout of the tube in the other layer. With this arrangement in accordance with the invention and provided that the layout of the tube in a sheet is sufficiently dense, the observer placed substantially on a perpendicular to the planes of the sheets making up the lamp will simultaneously see the two lines of the tube in the two sheets. , which will give a uniform brightness over the entire surface occupied by the lamp. The length of the tube being substantially equal to twice the length of the tube in a single ply of equivalent lamp surface, the life of the lamp is increased. As the end bulbs containing the electrodes are normally bent behind the useful front part of the tube, the second ply of the tube is substantially in the same plane as said bulbs so that the overall thickness of the lamp is not substantially amended.

Le tube peut être plié ou courbé en double méandre ou en double spirale mais il est préférable dans le cas d'une lampe de surface rectangulaire de le plier en serpentin aplati, les longueurs rectilignes du tube réunies par des coudes dans les plans obliques se trouvant situées alternativement dans la nappe frontale et dans la nappe arrière.The tube can be bent or bent in double meander or in double spiral but it is preferable in the case of a rectangular surface lamp to bend it in a flattened serpentine, the straight lengths of the tube joined by elbows in the oblique planes being alternately located in the front and in the rear.

L'invention sera décrite plus en détail ci-après sous forme de trois modes de réalisation avec référence au dessin ci- annexé dans lequel :

  • La figure 1 est une vue en plan d'une lampe à décharge pour feu de répétition de forme rectangulaire; la figure 2 en est une vue en coupe par II-II de figure 1; la figure 3 est une vue en plan d'une lampe de même forme selon une autre forme de réalisation; la figure 4 est une vue en coupe par IV-IV de figure 3; la figure 5 est une vue en plan d'une lampe à décharge miniaturisée de forme circulaire et la figure 6 est une vue en coupe par VI-VI de figure 5.
The invention will be described in more detail below in the form of three embodiments with reference to the attached drawing in which:
  • Figure 1 is a plan view of a discharge lamp for a repeating light of rectangular shape; Figure 2 is a sectional view through II-II Figure 1; Figure 3 is a plan view of a lamp of the same shape according to another embodiment; Figure 4 is a sectional view through IV-IV of Figure 3; FIG. 5 is a plan view of a miniaturized discharge lamp of circular shape and FIG. 6 is a sectional view through VI-VI of FIG. 5.

Dans les dessins la référence la désigne le tube dans la nappe supérieure et la référence 1b le tube dans la nappe inférieure, 2 les parties coudées réunissant des parties du tube se trouvant dans les deux nappes, 3a et 3b les parties coudées réunissant des parties de tube se trouvant respectivement toutes les deux dans la nappe supérieure et toutes les deux dans la nappe inférieure et 4 désigne les bulbes contenantles électrodes.In the drawings, the reference designates it the tube in the upper ply and the reference 1b the tube in the lower ply, 2 the bent parts joining parts of the tube lying in the two plies, 3a and 3b the bent parts joining parts of tube respectively located both in the upper layer and both in the lower layer and 4 designates the bulbs containing the electrodes.

Les caractéristiques de l'invention résultent clairement des dessins.The features of the invention appear clearly from the drawings.

Dans le mode de réalisation des figures 1 et 2 qui est le mode de réalisation préférentiel, des longueurs de tube la et lb disposées dans les deux nappes supérieure et inférieure se succèdent en étant réunies par des parties coudées 2, les bulbes 4 étant placés aux deux extrémités de la surface.In the embodiment of FIGS. 1 and 2, which is the preferred embodiment, lengths of tube 1a and 1b arranged in the two upper and lower plies succeed each other by being joined by bent portions 2, the bulbs 4 being placed at the two ends of the surface.

Dans le mode de réalisation des figures 3 et 4 des longueurs de tube la réunies par des parties coudées 3a se font suite dans la nappe supérieure, la longueur de tube la se trouvant sur un bord de la nappe étant réunie à la longueur voisine lb dans l'autre nappe par une partie coudée 2, ladite longueur lb étant réunie aux autres longueurs 1b de la nappe inférieure par des parties coudées 3b. Les deux bulbes 4 sont situés du même côté de la surface de la lampe.In the embodiment of FIGS. 3 and 4, the lengths of tube 1a joined by bent parts 3a follow one another in the upper ply, the length of tube 1a lying on one edge of the ply being joined to the neighboring length 1b in the other ply by a bent part 2, said length lb being joined to the other lengths 1b of the lower ply by bent parts 3b. The two bulbs 4 are located on the same side of the surface of the lamp.

Dans le mode de réalisation des figures 5 et 6 les parties de tube la et 3b sont recourbées en spirale et réunies au centre par une partie coudée 2. Les bulbes 4 sont placés aux extrémités libres du tube.In the embodiment of Figures 5 and 6 the tube parts la and 3b are bent in a spiral and joined in the center by a bent part 2. The bulbs 4 are placed at the free ends of the tube.

Claims (4)

1. Une lampe à décharge du type tube à cathode froide, caractérisée en ce que le tube est, entre les deux électrodes (4), plié ou courbé selon deux nappes (la , Ib) situées dans deux plans parallèles rapprochés, le tracé du tube dans une nappe s'intercalant avec le tracé du tube dans l'autre nappe.1. A discharge lamp of the cold cathode tube type, characterized in that the tube is, between the two electrodes (4), bent or curved according to two layers (la, Ib) located in two close parallel planes, the layout of the tube in one layer intercalated with the path of the tube in the other layer. 2. Une lampe à décharge selon la revendication 1, caractérisée en ce que le tube est plié en double méandre la - 3a , lb - 3b (Fig. 3).2. A discharge lamp according to claim 1, characterized in that the tube is bent in double meander la - 3a, lb - 3b (Fig. 3). 3. Une lampe à décharge selon la revendication 1, caractérisée en ce que le tube est courbé en double spirale (la , 1b) (Fig. 5).3. A discharge lamp according to claim 1, characterized in that the tube is bent in a double spiral (la, 1b) (Fig. 5). 4. Une lampe à décharge selon la revendication 1, caractérisée en ce que le tube est plié en serpentin aplati, les longueurs rectilignes (la , lb) du tube réunies par des coudes(2) dans des plans obliques se trouvant situées alternativement dans la nappe frontale et dans la nappe arrière.4. A discharge lamp according to claim 1, characterized in that the tube is bent in a flattened coil, the straight lengths (la, lb) of the tube joined by elbows (2) in oblique planes being located alternately in the front cable and in the rear cable.
EP82400898A 1981-05-26 1982-05-14 Discharge lamp of the cold-cathode type bent about two levels Expired EP0066495B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400898T ATE21187T1 (en) 1981-05-26 1982-05-14 DISCHARGED LAMP WITH COLD CATHODE BENT IN TWO PLANES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110419 1981-05-26
FR8110419A FR2507011A1 (en) 1981-05-26 1981-05-26 DISCHARGE LAMP TUBE TYPE WITH COLD CATHODE CURVED ACCORDING TO TWO TABLECLOTHS

Publications (3)

Publication Number Publication Date
EP0066495A2 true EP0066495A2 (en) 1982-12-08
EP0066495A3 EP0066495A3 (en) 1983-08-03
EP0066495B1 EP0066495B1 (en) 1986-07-30

Family

ID=9258892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400898A Expired EP0066495B1 (en) 1981-05-26 1982-05-14 Discharge lamp of the cold-cathode type bent about two levels

Country Status (6)

Country Link
EP (1) EP0066495B1 (en)
AT (1) ATE21187T1 (en)
CA (1) CA1192597A (en)
DE (1) DE3272290D1 (en)
ES (1) ES272873Y (en)
FR (1) FR2507011A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154405A (en) * 1984-01-10 1985-09-04 Thorn Emi Domestic Appliances Heating apparatus
US5536999A (en) * 1994-12-02 1996-07-16 Winsor Corporation Planar fluorescent lamp with extended discharge channel
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps
US5705883A (en) * 1995-03-31 1998-01-06 General Electric Company Reduced length compact fluorescent lamp and method of forming same
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp
WO2005038341A3 (en) * 2003-10-10 2007-01-25 Honeywell Int Inc Compact fluorescent lamps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473878A (en) * 1947-11-25 1949-06-21 Gen Electric Electric lamp of double spiral convolution
US2743388A (en) * 1953-09-08 1956-04-24 Samuel C Bartley Electric lamp
FR1234566A (en) * 1958-09-05 1960-10-18 Philips Nv Light source consisting of at least one electric discharge tube
FR1464022A (en) * 1965-11-16 1966-07-22 Pat & Visseaux Claude Device for lighting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473878A (en) * 1947-11-25 1949-06-21 Gen Electric Electric lamp of double spiral convolution
US2743388A (en) * 1953-09-08 1956-04-24 Samuel C Bartley Electric lamp
FR1234566A (en) * 1958-09-05 1960-10-18 Philips Nv Light source consisting of at least one electric discharge tube
FR1464022A (en) * 1965-11-16 1966-07-22 Pat & Visseaux Claude Device for lighting

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154405A (en) * 1984-01-10 1985-09-04 Thorn Emi Domestic Appliances Heating apparatus
US5536999A (en) * 1994-12-02 1996-07-16 Winsor Corporation Planar fluorescent lamp with extended discharge channel
US5818164A (en) * 1994-12-02 1998-10-06 Winsor Corporation Fluorescent lamp with electrode housing
US5705883A (en) * 1995-03-31 1998-01-06 General Electric Company Reduced length compact fluorescent lamp and method of forming same
EP0735567A3 (en) * 1995-03-31 1999-01-13 General Electric Company Discharge lamp
GB2310078B (en) * 1996-01-24 2000-10-18 Terence Milner Lighting device
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp
WO2005038341A3 (en) * 2003-10-10 2007-01-25 Honeywell Int Inc Compact fluorescent lamps

Also Published As

Publication number Publication date
ATE21187T1 (en) 1986-08-15
FR2507011A1 (en) 1982-12-03
EP0066495B1 (en) 1986-07-30
ES272873Y (en) 1984-04-16
DE3272290D1 (en) 1986-09-04
EP0066495A3 (en) 1983-08-03
CA1192597A (en) 1985-08-27
ES272873U (en) 1983-11-01
FR2507011B1 (en) 1985-05-03

Similar Documents

Publication Publication Date Title
EP0066495B1 (en) Discharge lamp of the cold-cathode type bent about two levels
JP5001940B2 (en) Optical waveguide with optical deflection region
JP5628230B2 (en) Optical semiconductor lighting device
EP3286491A1 (en) Lighting device with led filaments
FR2670562A1 (en) LIGHTING DEVICE FOR VEHICLES.
FR2537340A1 (en) DISCHARGE LAMP
GB2198516A (en) Luminaire
FR2495279A1 (en) LIGHTING APPARATUS
US5675215A (en) Compact fluorescent lamp having a helical lamp envelope and an efficient mounting arrangement therefor
CN100538161C (en) The LED fluorescent tube
CA2653468A1 (en) Gas-discharge reflector lamp
WO2004084258A3 (en) An electric incandescent lamp with infrared reflecting layer
JPS58112238A (en) Fluorescent lamp
JP2002015700A (en) Fluorescent lamp
EP1061556B1 (en) Lamp for a headlight provided with a reflector
US7121681B2 (en) Compact high-brightness fluorescent lamp system
JPS6041750A (en) Signal device
NL2024989B1 (en) Double ended internal reflector lamp with aligned press-sealed end connectors relative to a reflective glass bulb portion.
FR2742919A1 (en) COMPACT FLUORESCENT LAMP AND METHOD FOR MANUFACTURING SUCH LAMP
JP2004158319A (en) Incandescent lamp
US8110969B2 (en) Gas-discharge reflector lamp
JPH113688A (en) Reflection type tubular lamp and lighting system
JPS61225707A (en) Lighting apparatus
KR200321043Y1 (en) Light diffusion lamp and sign-board using Light diffusion lamp
FR2777731A1 (en) Light emitting diode with lateral light beam transmission

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840131

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19860730

REF Corresponds to:

Ref document number: 21187

Country of ref document: AT

Date of ref document: 19860815

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19860731

REF Corresponds to:

Ref document number: 3272290

Country of ref document: DE

Date of ref document: 19860904

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920526

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19930415

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930531

Ref country code: CH

Effective date: 19930531

EPTA Lu: last paid annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940514

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970424

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970717

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980505

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990514

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990514

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010427

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 20020514 *DESPLAT RAYMOND