EP0718869A1 - Low pressure discharge lamp - Google Patents

Low pressure discharge lamp Download PDF

Info

Publication number
EP0718869A1
EP0718869A1 EP95119041A EP95119041A EP0718869A1 EP 0718869 A1 EP0718869 A1 EP 0718869A1 EP 95119041 A EP95119041 A EP 95119041A EP 95119041 A EP95119041 A EP 95119041A EP 0718869 A1 EP0718869 A1 EP 0718869A1
Authority
EP
European Patent Office
Prior art keywords
glass
discharge lamp
amalgam
pressure discharge
low
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
EP95119041A
Other languages
German (de)
French (fr)
Other versions
EP0718869B1 (en
Inventor
Friedrich Lauter
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0718869A1 publication Critical patent/EP0718869A1/en
Application granted granted Critical
Publication of EP0718869B1 publication Critical patent/EP0718869B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting

Definitions

  • the invention relates to a low-pressure discharge lamp according to the preamble of patent claim 1.
  • the mercury filling component is bound as amalgam within the discharge vessel.
  • Such lamps usually have an operating amalgam and one or more so-called start-up amalgams.
  • the operating amalgam is usually attached to a location within the discharge vessel that takes on a temperature which fluctuates only slightly between about 90 ° C. and 100 ° C. during lamp operation.
  • the start-up amalgams are located at hotter points than the operating amalgam and, after ignition, ensure that the low-pressure discharge lamp starts up quickly, by emitting mercury vapor for the discharge shortly after the lamp has been ignited before the operating amalgam has reached its optimum temperature provide.
  • Such a low-pressure discharge lamp which corresponds to your preamble of claim 1, is printed, for example, in the essay "The mercury vapor pressure of indium amalgam and the luminous flux temperature curve of the new indium amalgam fluorescent lamps" by Hofmann & Rasch (pages 106-119 in particular) Pages 117-118) in Volume 11 of the "Technical-Scientific Treatises of the Osram Society” Springer-Verlag 1973.
  • the lamp disclosed here also has two start-up or auxiliary amalgams.
  • the first start-up amalgam is attached to an electrode cap, in the immediate vicinity of the electrode coil, while the second start-up amalgam is arranged in the area of the plate tube crimp, in which the power leads for the electrode coil are squeezed in a gas-tight manner.
  • the electrode frame does not consist of a tube tube melt like the aforementioned indium amalgam fluorescent lamp, but essentially only a glass rod that stabilizes the electrode filament and its power supply lines before and during the crushing of the discharge vessel ends.
  • the lamp disclosed here has a small ampoule filled with the start-up amalgam, which is held by a power supply near the filament. This power supply is wound around the ampoule several times, like a heating winding, and heats it up.
  • the aforementioned type of electrode frame and the sealing squeezing of the discharge vessel ends above the power supply lines are mainly used for compact fluorescent lamps, while the tube sealing is more common with Siab-shaped T8, T10 and T12 fluorescent lamps.
  • the low-pressure discharge lamp according to the invention has a carrier body for the start-up amalgam, which is melted directly into or melted onto a glass body belonging to the electrode frame.
  • the carrier body is inserted into the glass of the vitreous body, which is still soft, or else it is glazed onto the vitreous body.
  • the amalgam carrier body is simple and reliable Fixed in or on the vitreous.
  • the carrier body can be fastened both in a plate tube base made of glass and in a glass bead or glass rod stabilizing the electrode frame.
  • a metal sheet or metal grid coated with an amalgam former is particularly advantageously suitable as the carrier body for the amalgam.
  • a simple metal wire coated with amalgam former can also be used as a carrier body.
  • the amalgam carrier body according to the invention can be placed in such a way that the hottest point of the electrode frame is on the carrier body itself, thereby preventing the amalgam former from creeping in the direction of the electrode coil.
  • FIG. 2 shows the unsocked discharge vessel end of a low-pressure discharge lamp according to a second exemplary embodiment of the invention.
  • This lamp has a tube-like discharge vessel 1 'made of glass, the ends of which are each sealed gas-tight by means of a plate tube melt 6'.
  • Two current leads 3 ', 4' protrude from the discharge vessel end, each of which is electrically conductively connected to one end of a spiral electrode 5 'arranged inside the discharge vessel 1'.
  • the plate tube melt 6 ' is a glass tube - called a plate tube - through which the current leads 3', 4 'and the pump stem 8' are threaded.
  • the upper end 6a 'of this plate tube 6' is tightly squeezed above the power supply lines 3 ', 4' and the pump stem 8 ', while the lower end 6b' is expanded in a funnel-like manner into a plate and is sealed gas-tight with the end of the discharge vessel.
  • the pinch seal 6a 'of the plate tube 6' forms, together with the current leads 3 ', 4' and the electrode filament 5 ', an electrode frame of the low-pressure discharge lamp.
  • an indium-coated metal sheet 7 ' is partially melted in the pinch seal area 6a' of the plate tube melt 6 'by being inserted into the glass of the plate tube 6a', which is not yet completely solid, about 0.3 mm deep.
  • the dimensions of this metal sheet are approximately 2.5 x 7 x 0.2 mm3.
  • the mercury introduced into the low-pressure discharge lamp as a filling component forms indium amalgam with the indium on the metal sheet 7 ′, which accelerates the start-up of the lamp.
  • the invention is not limited to the exemplary embodiments described in more detail above.
  • other sheets made of high-melting metals can also be used as carrier bodies for the amalgam.
  • metal bodies of a different shape, coated with an amalgam former, for example metal grids or metal wires, which are partially melted into the glass bead or into the plate tube, are also suitable as carrier bodies instead of sheets.
  • the size of the carrier body is essentially limited only by the diameter of the discharge vessel.
  • other metals such as e.g. B. Cadmium in question.
  • the size of the carrier body and the layer thickness of the amalgam former on the carrier body and thus also the amount of amalgam former depend on the respective lamp type.

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

The lamp has a discharge envelope (1') containing a starting amalgam and at least two electrodes with an electrode coil (5) provided with current leads (3',4') at either end, sealed in a glass body (6'). The starting amalgam is provided by a metal plate or grid acting as a carrier (7'), coated with an indium amalgam and partially embedded in the glass body. Pref. the glass body is provided by a glass bead or a glass rod, providing a gas-tight seal of the end of the discharge envelope, in which the carrier is embedded before it is fully hardened.

Description

Die Erfindung betrifft eine Niederdruckentladungslampe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a low-pressure discharge lamp according to the preamble of patent claim 1.

Insbesondere handelt es sich um eine Amalgam-Niederdruckentladungslampe. Bei diesem Lampentyp liegt die Quecksilberfüllungskomponente innerhalb des Entladungsgefäßes als Amalgam gebunden vor. Üblicherweise besitzten derartige Lampen ein Betriebs-Amalgam sowie ein oder mehrere sogenannte Anlauf-Amalgame. Das Betriebs-Amalgam ist gewöhnlich an einem Ort innerhalb des Entladungsgefäßes angebracht, der während des Lampenbetriebes eine nur geringfügig schwankende Temperatur zwischen ca. 90 °C und 100 °C annimmt. Die Anlauf-Amalgame befinden sich an heißeren Stellen als das Betriebs-Amalgam und gewährleisten, nach erfolgter Zündung, den schnellen Anlauf der Niederdruckentladungslampe, indem sie bereits kurz nach der Lampenzündung, bevor das Betriebs-Amalgam seine optimale Temperatur erreicht hat, Quecksilberdampf für die Entladung bereitstellen.In particular, it is an amalgam low-pressure discharge lamp. In this type of lamp, the mercury filling component is bound as amalgam within the discharge vessel. Such lamps usually have an operating amalgam and one or more so-called start-up amalgams. The operating amalgam is usually attached to a location within the discharge vessel that takes on a temperature which fluctuates only slightly between about 90 ° C. and 100 ° C. during lamp operation. The start-up amalgams are located at hotter points than the operating amalgam and, after ignition, ensure that the low-pressure discharge lamp starts up quickly, by emitting mercury vapor for the discharge shortly after the lamp has been ignited before the operating amalgam has reached its optimum temperature provide.

Eine derartige, dein Oberbegriff des Patentanspruchs 1 entsprechende Niederdruckentladungslampe, ist beispielsweise in dem Aufsatz "Der Hg-Dampfdruck von Indiumamalgam und die Lichtstrom-Temperaturkurve der neuen Indiumamalgam-Leuchtstofflampen" von Hofmann & Rasch, abgedruckt auf den Seiten 106-119 (insbesondere auf den Seiten 117-118) im Band 11 der "Technisch-wissenschaftlichen Abhandlungen der Osram-Gesellschaft" Springer-Verlag 1973, beschrieben. Die hier offenbarte Lampe besitzt neben dem Betriebs- oder Haupt-Amalgam, das auf dein Tellerfuß der Tellerrohreinschmelzung aufgetragen ist, noch zwei Anlauf- oder Hilfs-Amalgame. Das erste Anlauf-Amalgam ist auf einer Elektrodenkappe, in unmittelbarer Nähe der Elektrodenwendel, angebracht, während das zweite Anlauf-Amalgam im Bereich der Tellerrohrquetschung angeordnet ist, in der die Stromzuführungen für die Elektrodenwendel gasdicht eingequetscht sind.Such a low-pressure discharge lamp, which corresponds to your preamble of claim 1, is printed, for example, in the essay "The mercury vapor pressure of indium amalgam and the luminous flux temperature curve of the new indium amalgam fluorescent lamps" by Hofmann & Rasch (pages 106-119 in particular) Pages 117-118) in Volume 11 of the "Technical-Scientific Treatises of the Osram Society" Springer-Verlag 1973. In addition to the operating or main amalgam, which is applied to your plate base of the plate tube melt, the lamp disclosed here also has two start-up or auxiliary amalgams. The first start-up amalgam is attached to an electrode cap, in the immediate vicinity of the electrode coil, while the second start-up amalgam is arranged in the area of the plate tube crimp, in which the power leads for the electrode coil are squeezed in a gas-tight manner.

Die Offenlegungsschrift PCT/US 92/10301 WO 93/11557 beschreibt ebenfalls eine dem Oberbegriff des Patentanspruchs 1 entsprechende Niederdruckentladungslampe. Allerdings besteht bei dieser Lampe das Elektrodengestell nicht aus einer Tellerrohreinschmelzung wie die vorgenannte Indiumamalgam-Leuchtstofflampe, sondern im wesentlichen nur aus einem Glasstab, der die Elektrodenwendel und ihre Stromzuführungen vor und während des Dichtquetschens der Entladungsgefäßenden stabilisiert. Die hier offenbarte Lampe besitzt eine kleine, mit dem Anlauf-Amalgam gefüllte Ampulle, die von einer Stromzuführung in Wendelnähe gehaltert wird. Diese Stromzuführung ist dabei mehrmals, wie eine Heizwicklung, um die Ampulle gewickelt und heizt diese auf. Die vorgenannte Art von Elektrodengestell sowie das Dichtquetschen der Entladungsgefäßenden über den Stromzuführungen wird vorwiegend bei kompakten Leuchtstofflampen angewendet, während man die Tellerrohreinschmelzung häufiger bei siabförmigen T8-, T10- und T12-Leuchtstofflampen antrifft.The published PCT / US 92/10301 WO 93/11557 also describes a low-pressure discharge lamp corresponding to the preamble of claim 1. However, in this lamp, the electrode frame does not consist of a tube tube melt like the aforementioned indium amalgam fluorescent lamp, but essentially only a glass rod that stabilizes the electrode filament and its power supply lines before and during the crushing of the discharge vessel ends. The lamp disclosed here has a small ampoule filled with the start-up amalgam, which is held by a power supply near the filament. This power supply is wound around the ampoule several times, like a heating winding, and heats it up. The aforementioned type of electrode frame and the sealing squeezing of the discharge vessel ends above the power supply lines are mainly used for compact fluorescent lamps, while the tube sealing is more common with Siab-shaped T8, T10 and T12 fluorescent lamps.

Es ist die Aufgabe der Erfindung, eine Niederdruckentladungslampe gemäß dem Oberbegriff des Patentanspruchs 1 mit einem verbesserten Amalgamträger bereitzustellen, der sowohl für Lampen mit Tellerrohreinschmelzungen als auch für Lampen, deren Elektrodengestelle mittels einer Glasperle bzw. mittels eines Glasstabes stabilisiert sind und deren Entladungsgefäßenden über den Stromzuführungen dicht gequetscht sind, geeignet ist.It is the object of the invention to provide a low-pressure discharge lamp according to the preamble of patent claim 1 with an improved amalgam carrier, which is used both for lamps with sealed tube melts and for lamps whose electrode frames are stabilized by means of a glass bead or by means of a glass rod and whose discharge vessel ends are connected via the current leads are squeezed tightly, is suitable.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the characterizing features of claim 1. Particularly advantageous embodiments of the invention are described in the subclaims.

Die erfindungsgemäße Niederdruckentladungslampe besitzt einen Trägerkörper für das Anlauf-Amalgam, der unmittelbar in einem zum Elektrodengestell gehörenden Glaskörper eingeschmolzen oder an diesem angeschmolzen ist. Dazu wird der Trägerkörper in das noch weiche Glas des Glaskörpers eingestochen oder aber an den Glaskörper angeglast. Nach dem Erkalten des Glases ist der Amalgam-Trägerkörper auf einfache und zuverlässige Weise in bzw. an dem Glaskörper fixiert. Der Trägerkörper kann auf diese Weise sowohl in einem aus Glas bestehenden Tellerrohrfuß als auch in einer das Elektrodengestell stabilisierenden Glasperle bzw. Glasstab befestigt werden. Als Trägerkörper für das Amalgam eignet sich besonders vorteilhaft ein mit einem Amalgambildner beschichtetes Metallblech oder Metallgitter. Ein simpler mit Amalgambildner beschichteter Metalldraht kommt ebenfalls als Trägerkörper in Frage. Der erfindungsgemäße Amalgam-Trägerkörper kann derart plaziert werden, daß sich die heißeste Stelle des Elektrodengestells auf dem Trägerkörper selbst befindet und dadurch ein Kriechen des Amalgambildners in Richtung der Elektrodenwendel verhindert wird.The low-pressure discharge lamp according to the invention has a carrier body for the start-up amalgam, which is melted directly into or melted onto a glass body belonging to the electrode frame. For this purpose, the carrier body is inserted into the glass of the vitreous body, which is still soft, or else it is glazed onto the vitreous body. After the glass has cooled, the amalgam carrier body is simple and reliable Fixed in or on the vitreous. In this way, the carrier body can be fastened both in a plate tube base made of glass and in a glass bead or glass rod stabilizing the electrode frame. A metal sheet or metal grid coated with an amalgam former is particularly advantageously suitable as the carrier body for the amalgam. A simple metal wire coated with amalgam former can also be used as a carrier body. The amalgam carrier body according to the invention can be placed in such a way that the hottest point of the electrode frame is on the carrier body itself, thereby preventing the amalgam former from creeping in the direction of the electrode coil.

Nachstehend wird die Erfindung anhand zweier Ausführungsbeispiele näher erläutert. Es zeigen:

Figur 1
Eine schematische Darstellung eines Entladungsgefäßendes (ohne Sockel) der erfindungsgemäßen Niederdruckentladungslampe entsprechend des ersten Ausführungsbeispiels
Figur 2
Eine schematische Darstellung (teilweise geschnitten) eines Entladungsgefäßendes (ohne Sockel) der erfindungsgemäßen Niederdruckentladungslampe entsprechend des zweiten Ausführungsbeispiels
In der Figur 1 ist ein Entladungsgefäßende einer Niederdruckentladungslampe, insbesondere einer kompakten Leuchtstofflampe, gemäß des ersten Ausführungsbeispiels der Erfindung schematisch abgebildet. Diese Lampe besitzt ein rohrförmiges Entladungsgefäß 1 aus Glas, das an seinen Enden mittels einer Quetschdichtung 2 gasdicht verschlossen ist. Aus der Quetschdichtung 2 ragen zwei Stromzuführungen 3,4 für eine innerhalb des Entladungsgefäßes 1 angeordnete Elektrodenwendel 5 heraus. Die beiden Stromzuführungen 3,4 sind jeweils mit einem Ende der Elektrodenwendel 5 verschweißt. Sie bilden Zusammen mit der Elektrodenwendel 5 und einer Glasperle 6, in der die Stromzuführungen 3,4 eingeschmolzen sind, ein Elektrodengestell der Leuchtstofflampe. Die Glasperle 6 dient zur Fixierung der mit der Elektrodenwendel 5 verbundenen Stromzuführungen 3, 4 während der Herstellung der Quetschdichtung 2. In der Glasperle 6 ist ferner ein mit Indium beschichtetes Metallblech 7, z. B. Eisenblech, eingeschmolzen, indem es in das noch weiche Glas der Perle 6 ca. 0,3 mm tief eingestochen wurde. Die Einstechlage ist so gewählt, das sich während des Lampenbetriebs die heißeste Stelle des Elektrodengestells auf dem Eisenblech 7 befindet und so ein Kriechen des Indiums in Richtung Elektrodenwendel verhindert wird. Dazu kann das Metallblech 7 nach dem Erstarren der Glasperle 6 zusätzlich noch mechanisch gebogen werden. Die Fläche des Metallbleches beträgt ca. 2,5 x 7 mm² und seine Dicke ca. 0,2 mm. Das in die Niederdruckentladungslampe als Füllungsbestandteil eingbrachte Quecksilber bildet mit dem Indium auf dem Metallblech 7 Indium-Amalgam, das den Anlauf der Lampe beschleunigt und daher als Hilfs- oder Anlauf-Amalgam bezeichnet wird.The invention is explained in more detail below with the aid of two exemplary embodiments. Show it:
Figure 1
A schematic representation of a discharge vessel end (without base) of the low-pressure discharge lamp according to the invention in accordance with the first exemplary embodiment
Figure 2
A schematic representation (partially sectioned) of a discharge vessel end (without base) of the low-pressure discharge lamp according to the invention in accordance with the second exemplary embodiment
1 shows a discharge vessel end of a low-pressure discharge lamp, in particular a compact fluorescent lamp, according to the first exemplary embodiment of the invention. This lamp has a tubular discharge vessel 1 made of glass, which is sealed gas-tight at its ends by means of a pinch seal 2. Two current leads 3, 4 for an electrode coil 5 arranged inside the discharge vessel 1 protrude from the pinch seal 2. The two power supply lines 3, 4 are each welded to one end of the electrode coil 5. Together with the electrode coil 5 and a glass bead 6, in which the current leads 3, 4 are melted, they form an electrode frame of the fluorescent lamp. The glass bead 6 is used to fix the current leads 3, 4 connected to the electrode coil 5 during the Production of the pinch seal 2. In the glass bead 6 is also an indium coated metal sheet 7, z. B. iron sheet, melted by being inserted into the still soft glass of the pearl 6 about 0.3 mm deep. The piercing position is selected so that the hottest point of the electrode frame is on the iron sheet 7 during lamp operation and thus prevents the indium from creeping in the direction of the electrode coil. For this purpose, the metal sheet 7 can additionally be mechanically bent after the glass bead 6 has solidified. The area of the metal sheet is approximately 2.5 x 7 mm² and its thickness is approximately 0.2 mm. The mercury introduced into the low-pressure discharge lamp as a filling component forms indium amalgam with the indium on the metal sheet 7, which accelerates the start-up of the lamp and is therefore referred to as auxiliary or start-up amalgam.

In der Figur 2 ist das ungesockelte Entladungsgefäßende einer Niederdruckentladungslampe gemäß eines zweiten Ausführungsbeispiels der Erfindung dargestellt. Diese Lampe besitzt ein rohrartiges Entladungsgefäß 1' aus Glas, dessen Enden jeweils mittels einer Tellerrohreinschmelzung 6' gasdicht verschlossen sind. Aus dem Entladungsgefäßende ragen zwei Stromzuführungen 3', 4' heraus, die jeweils mit einem Ende einer innerhalb des Entladungsgfäßes 1' angeordeten Wendelelektrode 5' elektrisch leitend verbunden sind. Bei der Tellerrohreinschmelzung 6' handelt es sich um ein Glasrohr - Tellerrohr genannt -, durch das die Stromzuführungen 3', 4' und das Pumpstengel 8' hindurchgefädelt sind. Das obere Ende 6a' dieses Tellerrohrs 6' ist über den Stromzuführungen 3',4' und dem Pumpstengel 8' dichtgequetscht, während das untere Ende 6b' trichterartig zu einem Teller erweitert und mit dein Entladungsgefäßende gasdicht verschmolzen ist. Die Quetschdichtung 6a' des Tellerrohrs 6' bildet zusammen mit den Stromzuführungen 3', 4' und der Elektrodenwendel 5' ein Elektrodengestell der Niederdruckentladungslampe. Im Quetschdichtungsbereich 6a' der Tellerrohreinschmelzung 6' ist erfindungsgemäß ein mit Indium beschichtetes Metallblech 7' teilweise eingeschmolzen, indem es in das noch nicht vollständig erstarrte Glas des Tellerohrs 6a' ca. 0,3 mm tief eingestochen wurde. Die Abmessungen dieses Metallbleches betragen ca. 2,5 x 7 x 0,2 mm³. Das in die Niederdruckentladungslampe als Füllungsbestandteil eingbrachte Quecksilber bildet mit dem Indium auf dem Metallblech 7' Indium-Amalgam, das den Anlauf der Lampe beschleunigt.FIG. 2 shows the unsocked discharge vessel end of a low-pressure discharge lamp according to a second exemplary embodiment of the invention. This lamp has a tube-like discharge vessel 1 'made of glass, the ends of which are each sealed gas-tight by means of a plate tube melt 6'. Two current leads 3 ', 4' protrude from the discharge vessel end, each of which is electrically conductively connected to one end of a spiral electrode 5 'arranged inside the discharge vessel 1'. The plate tube melt 6 'is a glass tube - called a plate tube - through which the current leads 3', 4 'and the pump stem 8' are threaded. The upper end 6a 'of this plate tube 6' is tightly squeezed above the power supply lines 3 ', 4' and the pump stem 8 ', while the lower end 6b' is expanded in a funnel-like manner into a plate and is sealed gas-tight with the end of the discharge vessel. The pinch seal 6a 'of the plate tube 6' forms, together with the current leads 3 ', 4' and the electrode filament 5 ', an electrode frame of the low-pressure discharge lamp. According to the invention, an indium-coated metal sheet 7 'is partially melted in the pinch seal area 6a' of the plate tube melt 6 'by being inserted into the glass of the plate tube 6a', which is not yet completely solid, about 0.3 mm deep. The dimensions of this metal sheet are approximately 2.5 x 7 x 0.2 mm³. The mercury introduced into the low-pressure discharge lamp as a filling component forms indium amalgam with the indium on the metal sheet 7 ′, which accelerates the start-up of the lamp.

Die Erfindung beschränkt sich nicht auf die oben näher beschriebenen Ausführungsbeispiele. Als Trägerkörper für das Amalgam können neben Eisenblech auch auch andere Bleche aus hochschmelzenden Metallen, verwendet werden. Außerdem eignen sich als Trägerkörper anstelle von Blechen auch andersartig geformte, mit einem Amalgambildner beschichtete Metallkörper, beispielsweise Metallgitter oder Metalldrähte, die in die Glasperle bzw. in das Tellerrohr teilweise eingeschmolzen sind. Die Größe des Trägerkörpers ist im wesentlichen nur durch den Durchmesser des Entladungsgefäßes begrenzt. Als Amalgambildner kommen neben Indium auch andere Metalle wie z. B. Cadmium in Frage. Die Größe des Trägerkörpers sowie die Schichtdicke des Amalgambildners auf dem Trägerkörper und damit auch die Amalgambildnermenge hängen vom jeweiligen Lampentyp ab.The invention is not limited to the exemplary embodiments described in more detail above. In addition to iron sheet, other sheets made of high-melting metals can also be used as carrier bodies for the amalgam. In addition, metal bodies of a different shape, coated with an amalgam former, for example metal grids or metal wires, which are partially melted into the glass bead or into the plate tube, are also suitable as carrier bodies instead of sheets. The size of the carrier body is essentially limited only by the diameter of the discharge vessel. In addition to indium, other metals such as e.g. B. Cadmium in question. The size of the carrier body and the layer thickness of the amalgam former on the carrier body and thus also the amount of amalgam former depend on the respective lamp type.

Claims (8)

Niederdruckentladungslampe mit einem gasdicht verschlossenen Entladungsgefäß (1;1'), mit einem Anlauf-Amalgam und mit mindestens zwei Elektrodengestellen, die jeweils neben einer Elektrodenwendel (5; 5') auch zwei mit den Wendelenden verbundene Stromzuführungen (3, 4; 3', 4') und einen Glaskörper (6; 6') aufweisen, in dem die Stromzuführungen (3, 4; 3', 4') eingeschmolzen oder eingequetscht sind, dadurch gekennzeichnet, daß das Anlauf-Amalgam auf mindestens einem Trägerkörper (7; 7') angeordnet ist, der an einem der Glaskörper (6; 6') angeschmolzen oder der in einem der Glaskörper (6; 6') teilweise eingeschmolzen ist.Low-pressure discharge lamp with a gas-tightly sealed discharge vessel (1; 1 '), with a start-up amalgam and with at least two electrode frames, each of which, in addition to an electrode coil (5; 5'), also has two current leads (3, 4; 3 ', connected to the coil ends) 4 ') and a glass body (6; 6') in which the current leads (3, 4; 3 ', 4') are melted or squeezed, characterized in that the starting amalgam is supported on at least one carrier body (7; 7 ') is arranged, which is melted onto one of the glass bodies (6; 6') or which is partially melted into one of the glass bodies (6; 6 '). Niederdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß die Glaskörper als Glasperlen (6) oder als Glasstäbe ausgebildet sind, in denen die zu den jeweiligen Elektrodengestellen gehörenden Stromzuführungen (3, 4) eingeschmolzen sind.Low-pressure discharge lamp according to Claim 1, characterized in that the glass bodies are designed as glass beads (6) or as glass rods, in which the current leads (3, 4) belonging to the respective electrode frames are melted. Niederdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß die Glaskörper als Tellerrohr-Einschmelzungen (6') ausgebildet sind, die mit den Entladungsgefäßenden verschmolzen sind und diese gasdicht verschließen.Low-pressure discharge lamp according to Claim 1, characterized in that the glass bodies are designed as plate tube melts (6 ') which are fused to the discharge vessel ends and close them in a gastight manner. Niederdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß der mindestens eine Trägerkörper (7; 7') als mit einem Amalgambildner beschichtetes Metallblech ausgebildet ist.Low-pressure discharge lamp according to Claim 1, characterized in that the at least one carrier body (7; 7 ') is designed as a metal sheet coated with an amalgam former. Niederdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß der mindestens eine Trägerkörper als mit einem Amalgambildner beschichtetes Metallgitter ausgebildet ist.Low-pressure discharge lamp according to Claim 1, characterized in that the at least one carrier body is designed as a metal grid coated with an amalgam former. Niederdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, daß der mindestens eine Trägerkörper als mit einem Amalgambildner beschichteter Metalldraht ausgebildet ist.Low-pressure discharge lamp according to Claim 1, characterized in that the at least one carrier body is designed as a metal wire coated with an amalgam former. Niederdruckentladungslampe nach den Ansprüchen 1 und 4, 5 oder 6, dadurch gekennzeichnet, daß der mindestens eine Trägerkörper (7; 7') in den noch weichen Glaskörper (6; 6') eingestochen ist.Low-pressure discharge lamp according to Claims 1 and 4, 5 or 6, characterized in that the at least one carrier body (7; 7 ') is pierced into the still soft glass body (6; 6'). Niederdruckentladungslampe nach den Ansprüchen 1 und 4, 5 oder 6, dadurch gekennzeichnet, daß der mindestens eine Trägerkörper an den Glaskörper angeglast ist.Low-pressure discharge lamp according to Claims 1 and 4, 5 or 6, characterized in that the at least one support body is glass-coated onto the glass body.
EP95119041A 1994-12-20 1995-12-04 Low pressure discharge lamp Expired - Lifetime EP0718869B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445532 1994-12-20
DE4445532A DE4445532A1 (en) 1994-12-20 1994-12-20 Low pressure discharge lamp

Publications (2)

Publication Number Publication Date
EP0718869A1 true EP0718869A1 (en) 1996-06-26
EP0718869B1 EP0718869B1 (en) 1999-02-24

Family

ID=6536425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119041A Expired - Lifetime EP0718869B1 (en) 1994-12-20 1995-12-04 Low pressure discharge lamp

Country Status (8)

Country Link
US (1) US5686788A (en)
EP (1) EP0718869B1 (en)
JP (1) JPH08236073A (en)
KR (1) KR960026060A (en)
CN (1) CN1132926A (en)
CA (1) CA2162339A1 (en)
DE (2) DE4445532A1 (en)
HU (1) HU216848B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052895A2 (en) * 2006-11-03 2008-05-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Mercury source

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3199110B2 (en) * 1997-12-05 2001-08-13 松下電器産業株式会社 Fluorescent lamp
WO2004114360A2 (en) * 2003-06-26 2004-12-29 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp
US20060113788A1 (en) * 2004-11-30 2006-06-01 Laser Band, Llc. Laser printable business form having a self laminating wristband and a self laminating strip label
KR100801668B1 (en) * 2006-10-27 2008-02-11 금호전기주식회사 Fluorescent lamp
EP2197021A1 (en) 2008-12-10 2010-06-16 Osram Gesellschaft mit Beschränkter Haftung Electricity supply element for an electrode and electrode assembly with at least one such electricity supply element
ITMI20082187A1 (en) * 2008-12-11 2010-06-12 Getters Spa MERCURY DISPENSER SYSTEM FOR FLUORESCENT LAMPS
DE102011006700A1 (en) * 2011-04-04 2012-10-04 Osram Ag Discharge lamp, in particular low-pressure mercury discharge lamp, and method for producing a discharge lamp
ITMI20112111A1 (en) 2011-11-21 2013-05-22 Getters Spa LAMP CONTAINING AN IMPROVED STARTING AMALGAMINE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115662A5 (en) * 1970-11-27 1972-07-07 Fedorenko Anatoly
US3713201A (en) * 1971-05-14 1973-01-30 Westinghouse Electric Corp Method and apparatus for manufacturing mercury-vapor control assemblies for electric discharge devices
US3860852A (en) * 1974-04-04 1975-01-14 Gte Sylvania Inc Fluorescent lamp containing amalgam-forming material
DE2616577A1 (en) * 1975-04-21 1976-11-04 Gte Sylvania Inc Low pressure mercury vapour fluorescent lamp - amalgam forming metal is used for mercury vapour pressure control
FR2438912A1 (en) * 1978-10-11 1980-05-09 Philips Nv LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP
JPS60133649A (en) * 1983-12-21 1985-07-16 Toshiba Corp Low-pressure mercury vapor discharge lamp
US4539508A (en) * 1981-12-04 1985-09-03 U.S. Philips Corporation Method of producing a low-pressure mercury vapor discharge lamp
EP0479259A2 (en) * 1990-10-01 1992-04-08 Toshiba Lighting & Technology Corporation Mercury vapor discharge lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2510379A1 (en) * 1975-03-10 1976-09-30 Patra Patent Treuhand LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP WITH AMALGAM
US4105910A (en) * 1976-04-23 1978-08-08 Westinghouse Electric Corp. Fluorescent lamp with an integral fail-safe and auxiliary-amalgam component
US5274305A (en) * 1991-12-04 1993-12-28 Gte Products Corporation Low pressure mercury discharge lamp with thermostatic control of mercury vapor pressure
US5412288A (en) * 1993-12-15 1995-05-02 General Electric Company Amalgam support in an electrodeless fluorescent lamp

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115662A5 (en) * 1970-11-27 1972-07-07 Fedorenko Anatoly
US3713201A (en) * 1971-05-14 1973-01-30 Westinghouse Electric Corp Method and apparatus for manufacturing mercury-vapor control assemblies for electric discharge devices
US3860852A (en) * 1974-04-04 1975-01-14 Gte Sylvania Inc Fluorescent lamp containing amalgam-forming material
DE2616577A1 (en) * 1975-04-21 1976-11-04 Gte Sylvania Inc Low pressure mercury vapour fluorescent lamp - amalgam forming metal is used for mercury vapour pressure control
FR2438912A1 (en) * 1978-10-11 1980-05-09 Philips Nv LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP
US4539508A (en) * 1981-12-04 1985-09-03 U.S. Philips Corporation Method of producing a low-pressure mercury vapor discharge lamp
JPS60133649A (en) * 1983-12-21 1985-07-16 Toshiba Corp Low-pressure mercury vapor discharge lamp
EP0479259A2 (en) * 1990-10-01 1992-04-08 Toshiba Lighting & Technology Corporation Mercury vapor discharge lamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 295 (E - 360) 21 November 1985 (1985-11-21) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052895A2 (en) * 2006-11-03 2008-05-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Mercury source
WO2008052895A3 (en) * 2006-11-03 2008-12-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Mercury source
US7952286B2 (en) 2006-11-03 2011-05-31 Osram Gesellschaft mit beschränkter Haftung Mercury source

Also Published As

Publication number Publication date
JPH08236073A (en) 1996-09-13
HU9503651D0 (en) 1996-02-28
US5686788A (en) 1997-11-11
HUT73123A (en) 1996-06-28
DE4445532A1 (en) 1996-06-27
KR960026060A (en) 1996-07-20
EP0718869B1 (en) 1999-02-24
CN1132926A (en) 1996-10-09
HU216848B (en) 1999-09-28
DE59505144D1 (en) 1999-04-01
CA2162339A1 (en) 1996-06-21

Similar Documents

Publication Publication Date Title
EP0479087B1 (en) High pressure discharge lamp
DE69804192T2 (en) HIGH PRESSURE DISCHARGE LAMP WITH UV AMPLIFIER
DE69310314T2 (en) Arc tube with an ignition source
EP0386588B1 (en) Low-pressure mercury discharge lamp
DE69604362T2 (en) ELECTRODELESS LOW PRESSURE DISCHARGE LAMP
DE2747043A1 (en) LOW PRESSURE MERCURY ARC DISCHARGE LAMP
EP0718869B1 (en) Low pressure discharge lamp
EP0888634B1 (en) Low-pressure discharge lamp
DE69826960T2 (en) Short arc lamp
DE2627380C3 (en) Metal vapor high pressure discharge lamp for horizontal operation
DE3015451C2 (en) Metal vapor discharge lamp
DE3123604C2 (en) Metal vapor high pressure discharge lamp
DE2732060C2 (en) Electric fluorescent lamp
DE2307192B2 (en) High pressure discharge lamp
DE10033662B4 (en) Arc tube for a discharge lamp and method for its production
DE69305126T2 (en) Electric discharge lamp.
DE69011145T2 (en) Metal vapor discharge lamp pinched on one side.
DE2749630C2 (en)
EP0588201B1 (en) High pressure discharge lamp and methof of manufacturing a high pressure discharge lamp
DE2713702A1 (en) GAS DISCHARGE LAMP, IN PARTICULAR FLASH TUBE
DE2656264C3 (en) Cable entry for a high pressure vapor discharge lamp
EP0061757A2 (en) Method for manufacturing a pinched seal for an electric lamp envelope and pinching device for carrying out the method
EP0245735B1 (en) High-pressure discharge lamp, and method of operating the high-pressure discharge lamp
DE69309417T2 (en) Fluorescent lamp
DE19603301C2 (en) Electric lamp with molybdenum foil bushings for a lamp vessel made of quartz glass

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

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19960719

17Q First examination report despatched

Effective date: 19961107

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 59505144

Country of ref document: DE

Date of ref document: 19990401

ITF It: translation for a ep patent filed
ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990428

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

Ref country code: BE

Payment date: 19991213

Year of fee payment: 5

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

Ref country code: GB

Payment date: 19991214

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19991221

Year of fee payment: 5

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

Ref country code: NL

Payment date: 19991223

Year of fee payment: 5

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
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: 20001003

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: 20001204

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

Ref country code: BE

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

Effective date: 20001231

BERE Be: lapsed

Owner name: PATENT-TREUHAND-G.- FUR ELEKTRISCHE GLUHLAMPEN M.

Effective date: 20001231

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

Ref country code: NL

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

Effective date: 20010701

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

Effective date: 20001204

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

Ref country code: FR

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

Effective date: 20010831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051204