EP1632988A2 - Procédé et appareil pour la fabrication d'une lampe - Google Patents

Procédé et appareil pour la fabrication d'une lampe Download PDF

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Publication number
EP1632988A2
EP1632988A2 EP05010912A EP05010912A EP1632988A2 EP 1632988 A2 EP1632988 A2 EP 1632988A2 EP 05010912 A EP05010912 A EP 05010912A EP 05010912 A EP05010912 A EP 05010912A EP 1632988 A2 EP1632988 A2 EP 1632988A2
Authority
EP
European Patent Office
Prior art keywords
lamp
laser
lamp bulb
feed opening
bulb
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.)
Withdrawn
Application number
EP05010912A
Other languages
German (de)
English (en)
Other versions
EP1632988A3 (fr
Inventor
Christoph Krieglmeyer
Christine Maier
Roland Mayer
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
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 EP1632988A2 publication Critical patent/EP1632988A2/fr
Publication of EP1632988A3 publication Critical patent/EP1632988A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01K3/22—Exhausting, degassing, filling, or cleaning vessels
    • 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
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
    • H01J9/326—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device making pinched-stem or analogous seals
    • 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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels
    • 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
    • H01J9/40—Closing vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • 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
    • H01K3/22—Exhausting, degassing, filling, or cleaning vessels
    • H01K3/24—Machines therefor
    • 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
    • H01K3/26—Closing of vessels

Definitions

  • the invention relates to a method for producing a lamp, preferably a one-side pinched incandescent lamp according to the preamble of claim 1, an apparatus for carrying out such a method and a lamp produced by such a method.
  • a piston tube is initially provided with a rounded tip on the end, on which an axially projecting Pumprohransatz is formed. Furthermore, the piston tube is reshaped in a mold by blowing inert gas into a lamp envelope, through the open feeding device of which a frame is used, on which at least one helix and the power supply lines are formed. Furthermore, the Pumprohr approach is partially separated, so that a pump tube can be attached to the resulting open cannula.
  • the feed opening for the frame is then sealed gas-tight by a pinch and evacuated via the pump tube of the lamp envelope enclosed inside and filled with a filling gas containing halogens.
  • the pump tube is then melted, so that the lamp bulb is closed and the two power supply lines protrude from the pinch.
  • a dome of the lamp bulb remote from this supply opening can be made smooth-surfaced, without a pump tip, so that the front-side illumination can be substantially improved compared to conventional solutions.
  • the manufacture of the lamps is also simplified compared to the generic method, since the separate steps for forming and separating / welding the pump tube can be omitted.
  • the filling and squeezing in the region of the feed opening in a gas-tightly sealed space preferably a pressure vessel perform in which both a holder for the lamp bulb, the light source and the squeezing device are arranged.
  • the filling can then be done by flooding the pressure vessel with the filling gas or via a suitable Gasein spallvorraum.
  • the method can be further simplified if the heating of the area of the lamp bulb to be squeezed is effected by high-energy radiation, for example laser radiation.
  • high-energy radiation for example laser radiation.
  • the laser itself can be arranged outside the space / pressure vessel, wherein the laser beam can enter the container interior via one or more laser windows.
  • the laser beam may be produced from two sides or at one side, wherein at least in the latter case the lamp should be rotated in order to heat the pinch region on both sides, while in the former case a simultaneous heating of diametrically arranged surfaces takes place ,
  • the quality of the pinch seal can be significantly improved if, by deflecting a laser spot by means of a scanner, a predetermined beam profile is generated, by which a directed heating of the pinch region is made possible.
  • This beam profile is set, for example, so that the intensity of the feed opening, d. H. gradually increases towards the lower edge of the lamp bulb in order to avoid the radiation losses in this area.
  • the lamp body is usually formed of quartz glass - to minimize SiO 2 formation (that is, formation of SiO 2 vapor), the laser power can be reduced depending on the Einstrahldauer.
  • the resulting during heating SiO 2 vapor or quartz smoke is preferably removed by suction, for example by means of a suction tube, which is directed to the region to be heated of the lamp vessel.
  • An important field of application of the method according to the invention consists in the production of so-called reflector lamps, in which the lamp bulb is expanded like a reflector and provided with a reflection layer, since no pump tip is formed in the region of a tip terminating the reflector, which inevitably arises in the lamps produced by conventional methods ,
  • Figures 1 to 3 show an embodiment of a halogen incandescent lamp, which may be designed for low voltage operation or mains voltage and which can be used in the living room or as a furniture lamp.
  • the incandescent lamp 1 has a lamp bulb 2, which in the raw state (dashed in Figure 2) has approximately the shape of a hollow cylinder, wherein an end portion is formed by a crowned curved tip 4. This is unlike traditional ones Halogen incandescent lamps are not provided with a pump tip 6, which is indicated in triggers in Figure 1, but smooth surface running, so that the frontal radiation is not hindered.
  • the lamp bulb 2 is made of quartz glass or tempered glass.
  • a pinch seal 8 is formed, via which a frame 10 is held gas-tight in the lamp bulb 2.
  • the frame 10 has a helix 12 whose axis is coaxial with the lamp axis (vertical in Figure 1).
  • two power supply lines 14, 16 are formed, which are connected to arranged in the pinch seal 8 molybdenum foils 18, 20. These are in turn connected to outside the pinch seal 8 lying base pins 22, 24.
  • the pinching takes place via molded crimping jaws, so that in the side view according to FIG. 2 the cylindrical base body is flattened so that, according to FIG. 3, a profile results which is trapezoidally widened at its outer narrow sides 26, 28.
  • the apparent in Figure 3 profile of the pinch 8 is determined by the geometry of the Formquetschbacken.
  • the interior of the lamp bulb 2 is filled in halogen lamps with a filling gas containing a proportion of a halogen (30 to 3000 ppm).
  • a filling gas containing a proportion of a halogen (30 to 3000 ppm).
  • a peculiarity of the above-described incandescent lamp 1 is that the evacuation and filling with filling gas is not carried out - as usual - via an attached to the pump tip 6 pump tube but from the crushing by the raw state (dashed lines in Figure 2) open supply port 30 of the lamp bulb 2 - A pump tip 6 is not required, the dome 4 can therefore be performed with high optical quality.
  • FIG. 4 shows a variant of an incandescent lamp 1 is shown, which is designed as a halogen reflector lamp.
  • the basic structure of this lamp is the same as in the above-described embodiment, ie, in a lamp bulb 2, a frame 10 is received, wherein the lower end portion of the lamp bulb 2 is sealed gas-tight over the pinch seal 8.
  • the pinch seal 8 merges into a neck 32, which then widens in a funnel shape to form a reflector 34, which is likewise crowned but more domed dome 4 is closed.
  • the funnel-shaped peripheral walls of the reflector 34 are provided with a silver coating 36 acting as a reflection layer.
  • Both lamps may additionally be provided with a special interference filter coating, is reflected back over the heat to the coil, so that less energy must be supplied from the outside to keep the coil to operating temperature.
  • This infrared coating allows a higher light output and thus a saving of energy costs for operating the lamp. If such a coating is applied, the lamp envelope 2 is formed with an elliptical cross-section.
  • the heating to deformation temperature is usually carried out in the conventional solutions by gas burners over which the area of the pinch seal 8 is heated.
  • FIG. 5 shows a device with which the method according to the invention can be carried out, in which the lamp bulb 2 is filled from below via the feed opening 30 and the lamp bulb 2 is heated by means of laser radiation.
  • the device has a pressure chamber 38, in which one or more of the incandescent lamps 1 to be filled and squeezed are arranged. This is held by a device which is shown in detail in Figure 6.
  • the pressure chamber 38 can be filled or evacuated by means of an inert gas line 40 with inert gas. Furthermore, a filling gas cannula 42 immersed in the pressure chamber 38, which dips into the feed opening 30 shown in Figure 2 and is connected to a filling gas line 44.
  • the heating of the pinch region is effected by means of a laser 46, wherein in the illustrated embodiment, a CO 2 laser is used with a wavelength of 10.6 microns - of course, other types of lasers are used.
  • the laser beam emitted by the laser 46 is directed by a suitable focusing optics, for example comprising a prism 48, a parabolic mirror 50 and a pivotable scanner mirror 52 through a laser window 54 of the pressure chamber 38 to the pinch region of the lamp bulb 2.
  • a suitable focusing optics for example comprising a prism 48, a parabolic mirror 50 and a pivotable scanner mirror 52 through a laser window 54 of the pressure chamber 38 to the pinch region of the lamp bulb 2.
  • the laser beam enters into the pressure chamber 38 on one side, so that only one side of the lamp bulb 2 is heated in each case.
  • Such a focusing optics requires that the incandescent lamp 1 is rotatably received in the pressure chamber 38, so that the pinch region can be uniformly heated on both sides.
  • the drive of the scanner mirror 52 is controlled so that the laser spot sweeps over a predetermined area a, wherein by controlling the scanner drive, a predetermined beam profile is adjustable over which the heating is controlled path-dependent. This will be explained with reference to FIG.
  • FIG. 6 shows the incandescent lamp 1 in the clamped state, the area swept by the laser beam being indicated by dashed lines.
  • the undeformed lamp bulb 2 (see Figure 2) is held by a pliers 54 which is rotatable about the vertical axis.
  • the frame 8 introduced into the lamp envelope 2 through the feed opening 30 is held in its predetermined relative position to the lamp envelope 2 by a frame holder 58 which is likewise rotatably mounted.
  • the cannula 42 extends through which the filling gas in the interior of the lamp envelope 2 can be pressed.
  • the filling gas is adjusted to a slight overpressure, which may be between 190 and 300 mbar depending on the lamp volume.
  • the laser 46 is driven and the piston rod 56 and the frame holder 58 synchronously rotated at a rotational speed between 180 to 600 U / min.
  • the scanner mirror drive is controlled so that adjusts a beam profile, as shown in Figure 6 right. D. h.,
  • the intensity profile increases in the region of the pliers 56 slightly to compensate for radiation losses over the piston lower edge.
  • the intensity profile also increases towards the lower edge, ie toward the feed opening 30, in order to compensate for the radiation losses in this area - this achieves a very uniform heating of the sections to be squeezed.
  • the Einstrahldauer and the laser power is adjusted so that the SiO 2 development (that is, the evaporation of SiO 2 or the formation of quartz smoke) is minimized. Preliminary tests showed that an irradiation time in the range between 2 to 20 seconds at a laser power between 300 and 2500 watts can be.
  • the laser power can be reduced stepwise during the irradiation period.
  • the SiO 2 formation can be reduced with decreasing laser power and at the same time with a somewhat longer irradiation time.
  • the shaping crimping jaws 60, 62 (dash-dotted line in FIG. 6) are closed and the pinching or another geometry shown in FIGS. 1 to 3 is formed.
  • the suction tube is directed to the area to be heated, for example the pinch, in order to suck off the quartz smoke produced during the heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
EP05010912A 2004-06-09 2005-05-19 Procédé et appareil pour la fabrication d'une lampe Withdrawn EP1632988A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004027997A DE102004027997A1 (de) 2004-06-09 2004-06-09 Verfahren und Vorrichtung zum Herstellen einer Lampe

Publications (2)

Publication Number Publication Date
EP1632988A2 true EP1632988A2 (fr) 2006-03-08
EP1632988A3 EP1632988A3 (fr) 2008-02-13

Family

ID=35454958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010912A Withdrawn EP1632988A3 (fr) 2004-06-09 2005-05-19 Procédé et appareil pour la fabrication d'une lampe

Country Status (5)

Country Link
US (1) US7445534B2 (fr)
EP (1) EP1632988A3 (fr)
JP (1) JP4958251B2 (fr)
CN (1) CN1707745B (fr)
DE (1) DE102004027997A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010355321B2 (en) * 2010-06-16 2014-02-27 Halliburtion Energy Services, Inc. Downhole sources having enhanced IR emission
CN115527805A (zh) * 2022-10-24 2022-12-27 厦门友格自动化科技有限公司 一种密封型继电器的透气孔结构及封闭透气孔的装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914371A (en) * 1955-06-16 1959-11-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method of making miniature lamps
US4287231A (en) * 1975-01-20 1981-09-01 Westinghouse Electric Corp. Method of spray-reflectorizing electric lamp envelopes
DE3507794A1 (de) 1984-03-05 1985-09-12 Stanley Electric Co. Ltd., Tokio/Tokyo Verfahren und einrichtung zur herstellung eines lampenkolbens mit gasdichtem fuss
US4746316A (en) 1976-12-07 1988-05-24 Kabushiki Kaisha Toshiba Method for manufacturing a luminous tube for discharge lamp
EP1024515A1 (fr) 1999-01-27 2000-08-02 Matsushita Electronics Corporation Procédé de fabrication d'un tube à décharge

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB800193A (en) * 1955-09-07 1958-08-20 Gen Electric Co Ltd Improvements in or relating to the manufacture of hermetically sealed glass vessels containing gas under pressure
GB952240A (en) * 1962-01-26 1964-03-11 Gen Electric Co Ltd Improvements in or relating to the manufacture of electric lamps
JPS59128735A (ja) * 1983-01-12 1984-07-24 Hamai Denkyu Kogyo Kk 小型ガス入りランプの製造方法
US4709187A (en) * 1985-03-28 1987-11-24 Gte Products Corporation Lamp with lead wire thermal switch
JPS6261266A (ja) * 1985-09-10 1987-03-17 ウシオ電機株式会社 管形ハロゲン電球の製造方法
JPS6261267A (ja) * 1985-09-10 1987-03-17 ウシオ電機株式会社 管形電球の製造方法
US4756701A (en) * 1986-06-19 1988-07-12 General Electric Company Method of making a tungsten-halogen lamps having an enhanced temperature gradient
JPS63211555A (ja) * 1987-02-26 1988-09-02 東芝ライテック株式会社 管球の圧潰封止用治具
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
DE9112690U1 (de) * 1991-10-11 1991-12-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
DE19623499A1 (de) * 1996-06-12 1997-12-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung einer Halogenglühlampe
US5681198A (en) * 1996-10-15 1997-10-28 Industrial Technology Research Institute Vacuum seal method for cathode ray tubes
JPH10241640A (ja) * 1997-02-26 1998-09-11 Toshiba Lighting & Technol Corp 反射形ランプおよび照明装置
KR100350616B1 (ko) * 1998-03-16 2002-08-30 마츠시타 덴끼 산교 가부시키가이샤 방전램프의 제조방법
JP3697362B2 (ja) * 1999-02-12 2005-09-21 松下電器産業株式会社 接合方法
US6729925B2 (en) * 2001-01-24 2004-05-04 Matsushita Electric Industrial Co., Ltd. Method for manufacturing discharge tube and discharge lamp
WO2003030211A1 (fr) * 2001-09-28 2003-04-10 Harison Toshiba Lighting Corp. Lampe a halogenure metallise, dispositif de commande de lampe a halogenure metallise et dispositif de phare avant d'automobile
JP4366655B2 (ja) * 2004-05-31 2009-11-18 サンケン電気株式会社 放電管
DE102004028004A1 (de) * 2004-06-09 2005-12-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Bearbeitung einer Lampe und nach einem derartigen Verfahren bearbeitete Lampe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914371A (en) * 1955-06-16 1959-11-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method of making miniature lamps
US4287231A (en) * 1975-01-20 1981-09-01 Westinghouse Electric Corp. Method of spray-reflectorizing electric lamp envelopes
US4746316A (en) 1976-12-07 1988-05-24 Kabushiki Kaisha Toshiba Method for manufacturing a luminous tube for discharge lamp
DE3507794A1 (de) 1984-03-05 1985-09-12 Stanley Electric Co. Ltd., Tokio/Tokyo Verfahren und einrichtung zur herstellung eines lampenkolbens mit gasdichtem fuss
EP1024515A1 (fr) 1999-01-27 2000-08-02 Matsushita Electronics Corporation Procédé de fabrication d'un tube à décharge

Also Published As

Publication number Publication date
JP2005353601A (ja) 2005-12-22
DE102004027997A1 (de) 2005-12-29
CN1707745A (zh) 2005-12-14
CN1707745B (zh) 2011-01-26
JP4958251B2 (ja) 2012-06-20
EP1632988A3 (fr) 2008-02-13
US20050275349A1 (en) 2005-12-15
US7445534B2 (en) 2008-11-04

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