EP1754238B1 - Verfahren zur bearbeitung einer lampe und nach einem derartigen verfahren bearbeitete lampe - Google Patents

Verfahren zur bearbeitung einer lampe und nach einem derartigen verfahren bearbeitete lampe Download PDF

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Publication number
EP1754238B1
EP1754238B1 EP05752461A EP05752461A EP1754238B1 EP 1754238 B1 EP1754238 B1 EP 1754238B1 EP 05752461 A EP05752461 A EP 05752461A EP 05752461 A EP05752461 A EP 05752461A EP 1754238 B1 EP1754238 B1 EP 1754238B1
Authority
EP
European Patent Office
Prior art keywords
lamp
lamp bulb
bulb
deformed
filling
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.)
Not-in-force
Application number
EP05752461A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1754238A2 (de
Inventor
Andreas Nittke
Georg Rosenbauer
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
Osram 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 Osram GmbH filed Critical Osram GmbH
Publication of EP1754238A2 publication Critical patent/EP1754238A2/de
Application granted granted Critical
Publication of EP1754238B1 publication Critical patent/EP1754238B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof

Definitions

  • the invention relates to a method for processing a lamp according to the preamble of claim 1 and a processed by such a method lamp.
  • the invention is applicable in principle to all lamps in which a lighting means, for example an incandescent filament of an incandescent lamp or an electrode for generating a discharge arc of a discharge lamp is accommodated in a lamp envelope or the like.
  • a lighting means for example an incandescent filament of an incandescent lamp or an electrode for generating a discharge arc of a discharge lamp is accommodated in a lamp envelope or the like.
  • the main field of application is likely to be in halogen lamps, in particular halogen incandescent lamps or discharge lamps, in which the filling gas contains a proportion of halogens.
  • Such a halogen incandescent lamp and its manufacturing method are for example in the DE 196 23 499 A1 explained. Concrete embodiments of these halogen incandescent lamps in low-voltage or high-voltage version can be found at www.osram.com/products/allgemein/halogen/schreibsicht.html.
  • a similar production method of a high-pressure discharge lamp is
  • halogen incandescent lamps are generally carried out by first providing a piston tube with a rounded tip at the end, on which an axially protruding pumping nozzle is formed. Through the open feed opening of the piston then a frame with a coil and power supply lines is used. The lamp bulb is gas-tightly sealed in the region of the feed opening by a pinch seal and flushed via an attached to the Pumprohr approach pump tube the interior of the lamp envelope, evacuated and filled with filling gas. Finally, the pump tube is melted off - the lamp bulb is sealed gas-tight.
  • the surface of the lamp bulb can be frosted by means of sandblasting, hydrofluoric acid etching, sol-gel coating with SiO 2 as scattering centers or the like.
  • Matting is accompanied by a loss of luminous flux. If glare protection without luminous flux loss or effect lighting with a light-dark effect is desired, an additional faceted enveloping bulb can be placed on the lamp bulb. This mounting of the envelope requires an additional device technical effort.
  • the lamp is first completed in the conventional manner, so that the filling gas is sealed gas-tight in the lamp envelope.
  • the filling gas is sealed gas-tight in the lamp envelope.
  • the lamp bulb After inserting the illuminant and filling the lamp bulb is inventively heated to a forming temperature and then deformed by suitable tools or surface areas are melted or it is removed material from a surface portion of the lamp envelope to form a particular surface structure or glass structure, for example, a matting by remelting or ablation or by removing material on the surface of the lamp bulb to produce or to produce small cracks in glass in soft glass which serve as scattering centers.
  • the glass in particular toughened glass
  • the glass can be tempered by a subsequent laser treatment.
  • the heat treatment of the entire lamp in a tempering furnace for the purpose of reducing the internal mechanical stresses in the glass can be dispensed with, and there is no risk of oxidation of base parts or power supply lines in the tempering furnace.
  • the heat treatment by laser only the glass of the lamp envelope, for. from the pinch edge to the pump nipple, annealed, that is, subjected to the heat treatment. Power supply and base parts, however, remain cold. At the same time microcracks on the surface of the lamp vessel can be removed, which would otherwise lead to a weakening of the glass.
  • the invention is directed against conventional methods in which the forming / melting takes place immediately before or after filling the lamp envelope - according to the invention, the lamp produced by the conventional method is to be seen only as an intermediate in another Work step to finished product is reworked.
  • the laser beam along a predetermined trajectory is stirred so that either a surface melting or ablation of a surface layer takes place, and for example, a matting can be removed or that by melting or Abtragen a predetermined surface pattern is formed.
  • matting can also be produced in a predetermined region on the surface of the lamp vessel by producing equal cracks which act as scattering centers by means of the laser beam in soft glass envelopes.
  • quartz glass glass is evaporated from the surface and removed, for example by suction. As a result, the surface is roughened, that is, there are tiny, light-scattering cracks on the surface.
  • the lamp envelope is heated to a forming temperature and then carried out by means of a tool a final shaping of the lamp envelope, for example, after filling approximately circular cross-section in a larger circular or (eg matched by appropriate control of the molds on the rotation of the lamp ) others, eg deformed elliptical cross section, which may be required in lamps with interference filter coating.
  • the expanded circular or elliptical cross section may also assume an elliptical or other, non-cylindrical shape, which is adapted to the helical geometry.
  • the last-mentioned method step can be used particularly advantageously in lamp constructions in which the luminous means is a filament of an incandescent lamp which is fixed in position by means of nubs formed in the lamp bulb.
  • the surface pattern formed, for example, by means of a laser beam can form facets which extend in the direction parallel to the lamp axis or in a zigzag direction. As a result, effect lighting in the room can be achieved (for example, striped illumination).
  • the invention is explained below with reference to halogen incandescent lamps.
  • the invention can also be used in other lamp types in which a light source is arranged within a lamp envelope or the like.
  • FIG. 1 an embodiment of a halogen incandescent lamp is shown, which can be designed for low-voltage operation or mains voltage and which can be used for example in the living room or as a built-in lamp.
  • the incandescent lamp 1 has a lamp bulb 2, which has approximately the shape of a hollow cylinder in the Grundzüstand, wherein one end portion is formed by a crowned curved tip 4 with a pump tip 6.
  • the lamp bulb 2 is made of quartz glass or hard glass.
  • a pinch seal 8 is formed, via which a frame 10 is held gas-tight in the lamp bulb 2.
  • the frame has a helix 12 whose axis is coaxial with the lamp axis (vertically in Fig. 1 ) runs.
  • two power supply lines 14, 16 are formed, which are connected to arranged in the pinch seal 8 molybdenum foils 18, 20.
  • the lamp bulb 2 can be frosted after filling by sandblasting. Especially with lamp manufacturers, the task is often to compare the luminous flux of such frosted lamps with that of unmatted lamps - this is done for example in the analysis of competing products.
  • the incandescent lamp 1 is arranged on a holder 26 which is rotatably mounted about the lamp vertical axis.
  • the surface of the lamp bulb is heated by means of a laser 28 whose laser beam is deflected by means of a focusing lens with a scanner mirror 30, so that a specific beam profile can be set.
  • the scanner mirror 30 is pivotable in the illustrated embodiment about a pivot axis arranged vertically to the plane of the drawing, so that the laser beam can be aligned along the vertical axis of the lamp.
  • the scanner mirror 30 can also be mounted so that it can additionally be deflected in the transverse direction, ie in the radial direction of the lamp, so that an arbitrary beam profile can be set. In most solutions, however, it may be sufficient to pivot the scanner mirror 30 in the predetermined manner in the vertical direction, wherein the feed in the transverse direction by stepwise or continuous rotation of the holder 26 takes place.
  • the energy input is now controlled so that the surface areas of the lamp bulb 2 are melted within a predetermined by the beam profile and the rotation of the holder 26, wherein the granular structure of the matting 31 melts or evaporated and in the molten glass area, the original, clear structure of the lamp bulb.
  • the luminous flux can then be determined easily.
  • the lamp with a faceting, for example, to effect a light-dark effect or glare protection without loss of luminous flux.
  • a faceting after filling incandescent lamp 1, for example, with the in Fig. 2 be applied by appropriate control of the scanner mirror 30 and the drive of the holder 26 and by suitable focusing of the laser spot a zigzag-shaped faceting 32 according to Fig. 4 or a parallel faceting 34 according to Fig. 5 can be generated.
  • the zigzag-shaped faceting according to FIG. 32 consists of a multiplicity of parallel zig-zag marks running parallel to one another.
  • other facet patterns such as wavy lines, intersecting lines or the like may be formed.
  • Fig. 6 is a further variant of a method according to the invention, ren processed incandescent lamp shown.
  • a lamp bulb 2 of a halogen incandescent lamp is shown, in which one or more coil, not shown, is held by means of radially pressed into the lamp bulb 2 nubs 36.
  • Such a solution is for example in the DE 195 28 686 A1 and is marketed by OSRAM GmbH under the product name "HALOPIN".
  • These lamps are preferably designed in the high-voltage range for operation on mains voltage.
  • the incandescent lamp 1 is first produced in a conventional manner, wherein the or the helix are fixed in position by means of the knobs. After filling and closing the lamp bulb then the partially finished bulb 1 is in the device according to Fig.
  • the lamp bulb 2 used and the lamp bulb 2 is heated in the region around the helix by means of the laser 28 to its forming temperature and then deformed by means of a suitable tool, such as a forming roller, so that the round cross section 40 of the lamp bulb 2 can be expanded to a larger diameter.
  • a suitable tool such as a forming roller
  • this subsequent deformation of the lamp body can also be used in lamp constructions in which the nubs 36 or the like are not formed.
  • This has a lamp bulb, in which a light source is received with power supply lines and limits a filling gas receiving space, which is sealed by a pinch seal.
  • a part of the lamp bulb is heated by heat supply and deformed or remelted to change the outer contour of the lamp envelope.
  • a lamp vessel consisting of a glass, in particular toughened glass or soft glass, which is used, for example, as an outer bulb for a halogen incandescent lamp or a high-pressure discharge lamp, be provided with a matting by a part of the surface or the entire surface of the lamp vessel is roughened by glass by ablation - ie by evaporation and suction - or by the matting effect being produced, in particular in soft glass, by producing tiny cracks which act as scattering centers
  • the finished lamps are usually subjected to heat treatment in a tempering furnace for the purpose of reducing mechanical stresses in the glass.
  • the disadvantage here is that while socket parts or the power supply can be heated and oxidized.
  • the glass bulb can be locally subjected to a heat treatment in order to reduce mechanical stresses in the glass bulb, without the current leads and the base parts being heated in the process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Surface Treatment Of Glass (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Lasers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP05752461A 2004-06-09 2005-05-19 Verfahren zur bearbeitung einer lampe und nach einem derartigen verfahren bearbeitete lampe Not-in-force EP1754238B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004028004A DE102004028004A1 (de) 2004-06-09 2004-06-09 Verfahren zur Bearbeitung einer Lampe und nach einem derartigen Verfahren bearbeitete Lampe
PCT/DE2005/000922 WO2005122206A2 (de) 2004-06-09 2005-05-19 Verfahren zur bearbeitung einer lampe und nach einem derartigen verfahren bearbeitete lampe

Publications (2)

Publication Number Publication Date
EP1754238A2 EP1754238A2 (de) 2007-02-21
EP1754238B1 true EP1754238B1 (de) 2009-04-22

Family

ID=35454959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05752461A Not-in-force EP1754238B1 (de) 2004-06-09 2005-05-19 Verfahren zur bearbeitung einer lampe und nach einem derartigen verfahren bearbeitete lampe

Country Status (8)

Country Link
US (1) US20080050997A1 (zh)
EP (1) EP1754238B1 (zh)
JP (1) JP2008505472A (zh)
CN (1) CN101218656B (zh)
AT (1) ATE429706T1 (zh)
CA (1) CA2568635A1 (zh)
DE (2) DE102004028004A1 (zh)
WO (1) WO2005122206A2 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004027997A1 (de) * 2004-06-09 2005-12-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren und Vorrichtung zum Herstellen einer Lampe
WO2008125611A1 (de) * 2007-04-16 2008-10-23 Osram Gesellschaft mit beschränkter Haftung VERFAHREN ZUM NACHTRÄGLICHEN ENTFERNEN ODER MODIFIZIEREN EINER ÄUßEREN GLASBESCHICHTUNG AUF EINEM LAMPENKOLBEN UND DAMIT HERGESTELLTE LAMPE
TWI421439B (zh) 2008-03-21 2014-01-01 Liquidleds Lighting Corp Glass package LED bulb and its manufacturing method
CN105047524B (zh) * 2015-05-08 2018-07-31 海宁市新宇光能科技有限公司 带引线隔热保护的泡壳封离系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663793A (en) * 1971-03-30 1972-05-16 Westinghouse Electric Corp Method of decorating a glazed article utilizing a beam of corpuscular energy
US4756701A (en) * 1986-06-19 1988-07-12 General Electric Company Method of making a tungsten-halogen lamps having an enhanced temperature gradient
US4823050A (en) * 1986-09-18 1989-04-18 Gte Products Corporation Metal-halide arc tube and lamp having improved uniformity of azimuthal luminous intensity
US5037342A (en) * 1988-11-15 1991-08-06 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Method of making an electric lamp, and more particularly a lamp vessel in which electrodes are retained in the lamp by a pinch or press seal
DE3842769A1 (de) * 1988-12-19 1990-06-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur herstellung einer zweiseitigen hochdruckentladungslampe
US5108333A (en) * 1988-12-19 1992-04-28 Patent Treuhand fur elektrische Gluhlampen m.b.H. Method of making a double-ended high-pressure discharge lamp
DE4008367A1 (de) * 1990-03-15 1991-09-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Einseitig gequetschte halogengluehlampe
US5146134A (en) * 1990-03-15 1992-09-08 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Halogen incandescent lamp, particularly for operation from power networks, and method of its manufacture
DE4233469A1 (de) * 1992-10-05 1994-04-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung einer einseitig gequetschten Hochdruckentladungslampe kleiner Leistung und Hochdruckentladungslampen
US5962973A (en) * 1997-06-06 1999-10-05 Guide Corporation Optically-coated dual-filament bulb for single compartment headlamp
CN1163944C (zh) * 1998-03-16 2004-08-25 松下电器产业株式会社 放电灯及其制造方法
US6729925B2 (en) * 2001-01-24 2004-05-04 Matsushita Electric Industrial Co., Ltd. Method for manufacturing discharge tube and discharge lamp

Also Published As

Publication number Publication date
ATE429706T1 (de) 2009-05-15
CN101218656B (zh) 2010-05-26
EP1754238A2 (de) 2007-02-21
US20080050997A1 (en) 2008-02-28
DE502005007142D1 (de) 2009-06-04
CA2568635A1 (en) 2005-12-22
CN101218656A (zh) 2008-07-09
WO2005122206A2 (de) 2005-12-22
JP2008505472A (ja) 2008-02-21
DE102004028004A1 (de) 2005-12-29
WO2005122206A3 (de) 2008-03-06

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