EP0984480B1 - Procédé pour la fabrication d'un tube d'affichage - Google Patents

Procédé pour la fabrication d'un tube d'affichage Download PDF

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Publication number
EP0984480B1
EP0984480B1 EP99117139A EP99117139A EP0984480B1 EP 0984480 B1 EP0984480 B1 EP 0984480B1 EP 99117139 A EP99117139 A EP 99117139A EP 99117139 A EP99117139 A EP 99117139A EP 0984480 B1 EP0984480 B1 EP 0984480B1
Authority
EP
European Patent Office
Prior art keywords
tube
display
voltage
glass tube
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99117139A
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German (de)
English (en)
Other versions
EP0984480A3 (fr
EP0984480A2 (fr
Inventor
Frank R. Dipl.-Ing. Müller
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.)
Neon-Mueller Dresden Lichtwerbung GmbH
Original Assignee
Neon-Mueller Dresden Lichtwerbung GmbH
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 Neon-Mueller Dresden Lichtwerbung GmbH filed Critical Neon-Mueller Dresden Lichtwerbung GmbH
Publication of EP0984480A2 publication Critical patent/EP0984480A2/fr
Publication of EP0984480A3 publication Critical patent/EP0984480A3/fr
Application granted granted Critical
Publication of EP0984480B1 publication Critical patent/EP0984480B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/26—Signs formed by electric discharge tubes
    • 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
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps

Definitions

  • the present invention relates to a method for manufacturing a display tube for display purposes, especially for the Light display technology and the illumination of advertising technology To form.
  • the luminous efficacy of high-voltage fluorescent tubes is very low, it is between 6 and 15 lm / W. To adequate and effective illumination results, especially with arrangement behind translucent materials practice Multiple parallel arrangements of high-voltage fluorescent tubes common. This leads to high costs for material components and wage benefits.
  • FIG. 1a shows an example of the use of a high-voltage tube according to the prior art to represent a block letter L.
  • the high-voltage tube 10 which for this purpose is arranged in a translucent form 12 to be illuminated, is connected to the secondary side of a high-voltage transformer 11. While the voltage U 1 on the primary side of the transformer 11 corresponds to the mains voltage, the voltage U 2 on the secondary side is calculated from the cathode case (approx. 300 V per tube) plus the burning voltage requirement of approx. 400 V per meter of pipe length.
  • Figure 1b shows the use as an alternative prior art of standard fluorescent lamps for illuminating illuminated signs Displays as a replacement for high-voltage fluorescent tubes.
  • Low voltage standard fluorescent lamps are in elongated, d. H. straight, circular, U-shaped or compact shape available.
  • Figure 1b shows the use of two low voltage standard fluorescent lamps 14 and 16 for illumination a translucent shape 18 to form a block letter L display. If the translucent shape 18 is dispensed with there would be an aesthetic problem because of the desired shape can only be represented in a very simplified manner and also the connection and bracket technology would be disruptively visible.
  • the letter L should be in a more characteristic, more aesthetically pleasing shape, such as in Figure-1c shown, illuminated, is as follows to proceed: Behind a Form 20, which was mostly darkened Has areas 22 and only in area 24 of the L is translucent, is a low-voltage standard fluorescent lamp 26 arranged. Because only the area 24 can be made translucent a viewer can only recognize light in the shape of the region 24. Leave by coloring the translucent area 24 achieve the desired color effects.
  • Form 20 cannot be made airtight because of air circulation necessary to dissipate the heat generated by the lamp 26 is. However, through these air supply openings penetrate - from Light attracted - insects that are hot when touched Die lamp or 20 spots on the inside of the mold leave. Dust can also penetrate through the openings.
  • FR 2393414 discloses a method for producing a display tube known, in which a part of the classically performed Production method for fluorescent lamps applied becomes. Especially in such a classic manufacturing process for fluorescent curved lamps becomes an elongated one Lamp body used and in a suitable heat zone brought in to heat it there until it is sufficient Temperature to be bent. Then be the opposite end pieces of said lamp body connected in order to be able to bend it so that the lamp body has a assumes a curved shape. Then the lamp body is emptied and closed again after being ionized Gas was filled. Finally, electrical connectors are attached.
  • DE-PS 892 505 also describes a fluorescent lamp which is produced by machine bending.
  • DD 267 349 describes a method for rinsing and filling a low pressure gas discharge lamp, the gases during pumping on one side into the glass, on the other Side out of the glass.
  • DE 34 39 326 relates to a pump-out device for pistons electric lamps, in particular circular fluorescent lamps. It describes the use of a bending machine for machine Production of standard lamps.
  • DD 133 381 relates to a method for producing a Discharge vessel for high pressure lamps.
  • DD 52 494 describes a method for merging Pump tubes, especially for fluorescent lamps.
  • DE 32 12 276 is a U-shaped fluorescent lamp known, with an ignition aid near the electrodes is applied.
  • the present invention is therefore based on the object propose a method of manufacturing a display tube, the display tube for illuminated advertising produced thereafter or lighting design presentation is suitable much better ratio of luminous flux and spent electrical power than in the prior art, and straightforward in terms of installation effort is.
  • a display tube made by this process which by no means Lighting purposes, only display purposes also has a number of important advantages.
  • display tubes could have a ratio from luminous flux to electrical power from 30 to 70 lm / W (luminous efficacy) can be realized. So that's the energy balance many times better than with high-voltage fluorescent tubes according to the state of the art.
  • a display tube manufactured in this way is only with low voltage operated, which is why the maximum voltage occurring is in the range of the mains voltage. This results in much lower requirements for the assembly effort, the Security requirements and with regard to the use of materials. While in the prior art according to the high-voltage fluorescent tubes a neon specialist with approval for installation the responsible local energy supply company (High voltage! Was necessary, according to the present invention any electrician connect such a tube, in particular can according to the inventive method manufactured display tubes according to the low-voltage installation regulations be installed and are therefore safety-related unproblematic. All of this essentially results lower assembly costs.
  • a display tube produced by the method according to the invention can also be done by using a light sensor or illuminance meter in conjunction with a multi-stage Ballast and the coil heating of the electrodes to the ambient brightness in a suitable, below Adjust the interface shown.
  • Ionization aid which is in the form of ignition aids such as ignition strips, Glow starter, capacitor circuits can be formed can.
  • ignition aids such as ignition strips, Glow starter, capacitor circuits can be formed can.
  • a dimming device can be provided, in the case of a inductive ballast, for example with a choke multiple taps or a series connection of several chokes with taps in between or one for a corresponding one Functional electronic ballast.
  • the heating transformer used for heating the spiral electrodes can also be provided in the ballast his.
  • the display tube can be used Light sensor (luminance meter with switching function) connected his.
  • the light output can be increased at dusk and then gradually switched back in the dark become.
  • dimming note that the lowering of the indicator tube voltage reduces the filament current becomes. If the voltage falls below a predetermined level this may require permanent heating of the filaments, thus the reduced energy flow through the heating current is compensated. Otherwise, there would be a risk of destruction the display tube or at least the impossibility of the Reignite.
  • the ignition and lamp voltage of the different manufactured Tube lengths of the display tube resulting from the design and intended use are determined by the choice of the appropriate Ballast adapted to the need.
  • the display tube produced by the method according to the invention can be operated in different ways: With continuous operation the display tubes are the spiral electrodes up to Ignition preheated, then the heating is switched off. This Operating mode is preferably used when there is no high one Switching frequency is required, e.g. in an advertising facility, which turned on in the evening and turned off in the morning becomes.
  • continuous heating With a high switching frequency with a defined switch-on time or in effect circuits with intended continuous changes in operating values, such as. by means of phase control, continuous heating must be used, i.e. the Spirals are permanently on after the entire system has been commissioned on the heating voltage and are triggered by the respective switching pulse of the pulse generator, e.g. in the form of an electronic watch module, ignited.
  • ballast for use with a method according to the invention manufactured display tube is in particular a ballast advantageous, whose outer shape is designed such that it can be built into the display tube. This is made possible in a system consisting of display tube and ballast of the low voltages used, which is why the ballasts can be kept smaller than in the prior art. Further advantageous developments of the invention are in the Subclaims defined.
  • FIG. 2 shows a display tube 30, which is a desired Form, here a curved L, and after the invention Process was made. Dashed is a translucent optional form 32 shown. Furthermore are the lamp ends 34 drawn in, the enlarged view are shown in Figure 3.
  • a glass tube covered with a fluorescent material manually bent into any shape is in a first Step a glass tube covered with a fluorescent material manually bent into any shape.
  • a next step are spiral electrodes at each end of the now deformed glass tube 36, see Figure 3, melted, at least a spiral electrode is provided with a pump nozzle 38.
  • the glass tube is heated, on the one hand, components of the blank which interfere with oxidation to effect and on the other hand the formation of the spiral electrodes bring about.
  • purge gases are in the Glass tube introduced and together with the resulting gases in a pumping device via the at least one pump nozzle 38 removed from the glass tube. This sequence of steps of heating and rinsing is repeated until the unwanted chemical components are below a certain limit. Then the tube is up to a certain negative pressure pumped empty via the pump nozzle 38, with the required Gas or gas mixture and, if necessary, under Addition of mercury filled, melted from the pump nozzle 38 and then burned in.
  • the bakeout temperature is approximately in the middle of the glass tube between 350 and 550 ° C, preferably 400 ° C, and at the Electrodes in a range of 1,000 to 1,200 ° C, preferably 1,100 ° C.
  • the required heat input must be external, e.g. under Use a baking oven.
  • This is next to the Pumping station placed so that both the pump stem and the heat protected electrical supply through the wall of the Oven is carried out.
  • the tube blanks are in the oven introduced in a suitable manner, melted onto the pump stem and connected the electrodes to the electrical lead. Then the oven is heated to a temperature of approx. 350 - 550 ° C ramped up, the entire display tube as possible is brought to this temperature evenly, over Pumping station and pump stem performed the well-known pumping process and the electrodes by a current input of approx. 500 formed up to 1000 mA.
  • a power supply unit located outside the oven temperatures of 1000 to 1200 ° C are generated at the electrodes. Then the tubes are cooled, rinsed, emptied, gas filled, annealed, melted and then baked.
  • an ignition strip can be used as an ionization aid applied to the display tube. Suitable for that is for example a metal foil strip that one Receives ground connection. Other ways of applying a fuse are known to the person skilled in the art.
  • a heating transformer is used, the heating voltage the electrode coil is fed.
  • the heating voltage which is required to make the electrode coil ready for ignition To bring about is the resistance of the wire helix dependent. This varies depending on the manufacturer's design and the heating voltage must be adjusted accordingly become.
  • the heating voltage is in any case within the limits 5 V and 9 V. Especially in connection with the described Ionization aid thus becomes a gentle ignition process of the display tube ensured. Please note at the dimensioning that the sum of indicator tubes and heating current flows.
  • FIG. 4a and 4b show circuit variants that are used when the display tube is working in cold mode should and the indicator tube start by sufficient filament preheating must be secured.
  • the transformer dimensioning has to be done in such a way that the coil is under voltage in the network still reaches the necessary emission temperature in the event of overvoltage however, evaporation of the emitter is avoided.
  • the secondary windings 40, 42 of the heating transformer in reverse connection are operated when the tube is not ignited Heating transformer and on the display tube the mains voltage, minus twice the heating voltage. At the ballast 48 falls with the low no-load load little voltage.
  • the applied ignition strip 50 reduces the longitudinal resistance of the indicator tube so that the tube ignites without additional start impulse.
  • the method according to the invention manufactured display tube as a replacement for the described Ignition strips also with other ignition aids, e.g. a capacitor cascade (for quick switching sequences) or a glow starter (with low switching frequency) are operated.
  • ignition aids e.g. a capacitor cascade (for quick switching sequences) or a glow starter (with low switching frequency) are operated.
  • the preheating circuit breaks after ignition Voltage on the transformer to the indicator tube voltage together and the heating transformer is practically switched off. If the network is inclined to undervoltage, this is shown in Figure 4b shown circuit variant with connection, with frequent Surges with the variant shown in Figure 4a Preference to switch the heating windings to the 220 volt winding is preferable.
  • the ignition strip 50 must be in a defined ratio to Mains voltage are brought. Either it receives protective conductor potential or it is connected to a resistor of 1 M ⁇ Conductor connected.
  • Figure 5 shows a circuit variant with continuous heating Helices.
  • Figure 6 shows a circuit variant for permanent heating for operation of two produced by the process according to the invention Display tubes. It comprises two ballasts 50, 52, two indicator tubes 54, 56, two ignition strips 58, 60, one Primary side of the heating transformer 62, a winding 64 for the return for both tubes and one winding per tube 66 or 68 for supplying the indicator tube current.
  • FIG. 7 shows an extended circuit variant for permanent heating, designed for the operation of five display tubes is.
  • FIG 8 shows one using three according to the invention Process manufactured display tubes electronic color mixer, the indicator tubes in continuous heating operate.
  • This color mixer comprises a first one red indicator tube 70, a second blue indicator tube 72 as well a third green indicator tube 74.
  • Each indicator tube has one Ballast 76, 78, 80 assigned.
  • control electronics 84 provided, which via a winding 86 with the Primary winding of the heating transformer 88 is connected.
  • a display tube 90 which is coupled to an ignition strip 100, stands over their spirals with the secondary pages 94 and 96 of Heating transformer in connection.
  • a ballast 98 provided, which is connected in series to a Winding 102 is located, with which the voltage increase is achieved becomes.
  • the primary winding 92 of the heating transformer is applied Mains voltage on.
  • the modification shown in Figure 10 also has a electronic controller 104, for example the controller the on and off time for the execution of lighting effects can serve.
  • FIG. 9 and FIG. 10 offer solutions for display tubes based on their constructive data cannot be operated on the basis of the mains voltage.
  • an excessive supply voltage can be achieved.
  • the mains voltage is 220 volts the winding 102 are dimensioned so that 40 volts on it drop, with an excessive supply voltage of 260 Volts is available (with heating coils switched on) or 245 volts (with heating coils connected in opposite directions).
  • the great advantage of this circuit arrangement is that while maintaining a technologically and lighting technology very favorable glass tube diameter tube lengths from to Display tubes produced according to the method realized that are over 1 m long and very good the requirement for illumination of small areas, but also for small cold-resistant lighting fixtures.
  • FIG. 11 shows one produced by the method according to the invention Display tube 100, which is shaped so that it in a 7-segment display 110 shown in FIG can be. Especially when operating in continuous heating extremely short turn-on times can be achieved, so that the 7-segment display 110 shown in FIG. 12, for example be used as a display point of a digital clock can.
  • FIG. 13 shows various embodiments for a preheating transformer.
  • the winding 120 is at mains voltage connected while the windings 122 and 124 connected to one or the other side of the display tube become.
  • the windings are in a dimensioning example 122 and 124 for a voltage of 6.8 volts and one Current of approximately 0.4 A each.
  • Figure 13b shows a preheating transformer, which is used to operate two indicator tubes is designed.
  • the winding 126 is at the mains voltage connected.
  • the windings 128 and 130 provide the Power supply to the respective display tube ready while the Winding 132 as a common current return line of both tubes serves and is therefore designed for a current flow that is double is as high as that through windings 128 and 130.
  • the winding 140 is connected to the network, while windings 142 and 144 with the indicator tube input and are connected to the indicator tube output.
  • the winding 146 serves to generate an increased display tube voltage, such as it was described in connection with FIG. 9.
  • FIG. 13d shows a preheating transformer for operating a 7-segment display.
  • the winding 150 is connected to the mains connection, while the windings 152, 154, 156, 158, 160, 162, 164 are connected to the respective display tube inputs and winding 166 is the common current feedback for all Display tubes. It is obvious that the winding 166 for seven times the current of the windings 152 to 164 must be designed.
  • FIG 14 shows a ballast that a step dimming of Display tube allows.
  • a throttle 130 with two Taps 132 and 134 are provided.
  • An output 136 is connected to the Display tube connected while three inputs 138, 140, 142 are provided, which correspond to three service areas, where the input 138 power range is the largest and the Power range of input 142 is the lowest.
  • the switchover between the individual service areas can be electronic respectively.
  • the ballast can also with a Illuminance meter for determining the ambient brightness can be connected, which includes, for example, a photocell and which are used to control the ballast can. For example, at dusk the input with the highest power can be selected while in full darkness the lowest power entrance preference can be given.
  • the respective ballast can match the length of the display tube in terms of its output voltage be adjusted.
  • the heating transformer is particularly advantageous to place the heating transformer in the Record ballast and design the ballast such that it is housed in the display tube liner can be. This leads to a further simplification of the Assembly. In this variant, it has proven to be particularly advantageous exposed if the at least one choke and the at least one heating transformer on a common one Core are arranged.
  • FIGS 15 and 16 show a connection system comprising standardized plug connections with which the the display tubes assigned ballasts in a straightforward manner can be connected.
  • the supply of the mains voltage carried so that they are tapped at every junction and a multiple supply line can be dispensed with can.
  • this connector system it is also special advantageously possible, the arrangement of each Ballasts in the sometimes complicated in terms of design to fit shaped tube lamination, so that special accommodation options, e.g. in the form of specially arranged device housings, are not required. This leads to further cost savings and improvement of aesthetic effect of the overall arrangement.
  • Fig. 15 shows an example of a letter "S" with a developed Length of 6 m.
  • the technology of the invention Manufacture of the display tubes leaves only a maximum length 1.5 m for a display tube. For example therefore 4 display tubes AZ1 to AZ4 used to populate the "S", 4 ballasts VG1 to VG4 are also used needed.
  • the connections of the Indicator tubes not shown on the ballasts. Only VG4 is connected to the mains connection. To the ballast VG4 closes this in a serial link Ballast VG3, in turn the ballast VG2 and finally the ballast VG1.
  • the mains voltage is looped through all ballasts, which is why separate ballast connections to the mains voltage unnecessary.
  • FIG. 16a shows two examples of the basic link.
  • a plug 150a which on one side to a Line 158a is connected, the mains voltage and possibly Control signals leads, has connector pins on its other side for connection to a choke 154.
  • the throttle 154 has connectors on its other side for connection to a Adapter 156 on.
  • the other side of the adapter 156 faces also connecting pins for connection to the first side of a Heater transformer 152 on while on the other side of the heating transformer 152 in turn a connector 150 b to Continuation of the mains voltage and possibly the control signals a next ballast can be connected.
  • 16a shows the connection using a 0 ° adapter is an example (left) and a 45 ° adapter (right).
  • 16b shows various adapters 16 for use in the Connection system, which is characterized by different angles distinguished. Adapters with angles of 0 °, 30 °, 45 °, 60 °, and 90 ° for use. Any realization Angles and adapter lengths are of course possible.
  • ballasts for example to a first connector through which the mains voltage is looped in the actual ballast. it the angled adapter follows and the second follows Plug that establishes the connection to the next ballast.
  • Figure 17 shows a system of several of the according to the invention Processed display tubes, in which that with reference to FIGS. 15 and 16 described in more detail Connection system is used.
  • This representation underlines that the assembly by a low voltage technician, d. H. a conventional electrician, while in the high-voltage fluorescent tubes of the prior art Technology a neon specialist is needed.
  • This example also shows like the individual letters by individually shaped Indicator tubes are illuminated. The individual letters are operated in parallel as shown in FIG. 17, while the display tubes within each Letters can be operated in series.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Claims (3)

  1. Procédé de réalisation d'un tube indicateur destiné à des fins d'affichage, notamment à une utilisation dans des installations de publicité lumineuse, comprenant les étapes suivantes:
    a. Pliage manuel en une quelconque forme d'un tube de verre (30) recouvert d'une couche de substance fluorescente;
    b. Scellement d'électrodes hélicoïdales (36) sur les extrémités du tube de verre déformé (30), une électrode hélicoïdale (36) étant munie d'une tubulure de pompage et les températures au milieu du tube de verre étant comprises entre 350 et 550°C et au niveau des électrodes hélicoïdales (36) entre 1000° et 1200°C;
    c. Réchauffement alterné du tube de verre (30) par alimentation en énergie depuis l'extérieur en vue de l'oxydation des composants gênants du tube d'affichage et pour soutenir la constitution des électrodes hélicoïdales et rinçage du tube de verre à l'aide de gaz de lavage, via la tubulure de pompage (38);
    d. Remplissage du tube de verre (30) avec au moins un gaz ou un mélange gazeux;
    e. Séparation par fusion de la tubulure de pompage (38) du tube de verre (30);
    f. Cuisson du tube de verre (30).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une étape supplémentaire de mise en place d'un dispositif de support d'amorçage (50) est prévue.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'alimentation extérieure en énergie intervient dans l'étape b. à l'aide d'un appareil haute fréquence ou d'un four de chauffage.
EP99117139A 1998-09-02 1999-08-31 Procédé pour la fabrication d'un tube d'affichage Expired - Lifetime EP0984480B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19839965 1998-09-02
DE19839965A DE19839965C2 (de) 1998-09-02 1998-09-02 Verfahren zum Herstellen einer Anzeigeröhre, eine nach diesem Verfahren hergestellte Anzeigeröhre und ein Verfahren zu ihrem Betreiben

Publications (3)

Publication Number Publication Date
EP0984480A2 EP0984480A2 (fr) 2000-03-08
EP0984480A3 EP0984480A3 (fr) 2000-05-17
EP0984480B1 true EP0984480B1 (fr) 2004-03-17

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EP99117139A Expired - Lifetime EP0984480B1 (fr) 1998-09-02 1999-08-31 Procédé pour la fabrication d'un tube d'affichage

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DE (2) DE19839965C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10153009C1 (de) * 2001-10-26 2003-04-17 Marcus Thielen Verfahren zur Herstellung von Gasentladungslampen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE478391A (fr) * 1945-01-26
US3749467A (en) * 1971-03-15 1973-07-31 Duro Test Corp Fluorescent lamps and method of manufacturing the same
DE2724528C2 (de) * 1977-05-31 1984-10-18 Osamu Matsudo Chiba Kawamura Verfahren und Vorrichtung zur Herstellung einer röhrenförmigen Leuchtstofflampe in bogenförmiger Gestalt
FR2393414A1 (fr) * 1977-06-02 1978-12-29 Kawamura Osamu Procede et appareil pour fabriquer une lampe fluorescente de forme courbe
DD133381A1 (de) * 1977-09-30 1978-12-27 Rainer Amende Verfahren zur herstellung von gasgefuellten lampen und glimmzuendern,vorzugsweise von entladungsgefaessen fuer hochdrucklampen
JPS55104044A (en) * 1979-02-02 1980-08-09 Toshiba Corp Evacuation method of fluorescent lamp
DE3112878A1 (de) * 1981-03-31 1982-10-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Quecksilberdampf-niederdruckentladungslampe und verfahren zur herstellung
JPS57182905A (en) * 1981-04-13 1982-11-11 Gen Electric U-shaped discharge lamp
JPS6095832A (ja) * 1983-10-28 1985-05-29 Toshiba Corp 管球の製造装置
JPS6095828A (ja) * 1983-10-31 1985-05-29 Toshiba Corp けい光ランプの製造方法
HU201421B (en) * 1987-01-23 1990-10-28 Tungsram Reszvenytarsasag Method for pumping low-pressure gas-discharge light source

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Publication number Publication date
DE19839965A1 (de) 2000-03-09
EP0984480A3 (fr) 2000-05-17
EP0984480A2 (fr) 2000-03-08
DE19839965C2 (de) 2003-04-17
DE59908856D1 (de) 2004-04-22

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EP2277362B1 (fr) Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge

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