EP0369370A2 - Méthode de fabrication d'une enceinte de lampe - Google Patents

Méthode de fabrication d'une enceinte de lampe Download PDF

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Publication number
EP0369370A2
EP0369370A2 EP89120989A EP89120989A EP0369370A2 EP 0369370 A2 EP0369370 A2 EP 0369370A2 EP 89120989 A EP89120989 A EP 89120989A EP 89120989 A EP89120989 A EP 89120989A EP 0369370 A2 EP0369370 A2 EP 0369370A2
Authority
EP
European Patent Office
Prior art keywords
lamp vessel
blank
future
heated
pinch
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
EP89120989A
Other languages
German (de)
English (en)
Other versions
EP0369370B1 (fr
EP0369370A3 (fr
Inventor
Clemens Barthelmes
Axel Bunk
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 EP0369370A2 publication Critical patent/EP0369370A2/fr
Publication of EP0369370A3 publication Critical patent/EP0369370A3/fr
Application granted granted Critical
Publication of EP0369370B1 publication Critical patent/EP0369370B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 invention relates to a method for producing a lamp vessel with the features designated in the preamble of the main claim.
  • Such lamps are known from U.S. Patents 4,278,050, 4,658,177, 4,717,852 and 4,851,735.
  • a lamp vessel has been produced by pressing a pump tube onto the tapered end of a quartz glass or hard glass tube, squeezing the electrode system under argon purging on a crimping machine at the opposite end, and the blank thus formed on the rinsing pumping station through the pump tube with the filling substances ( mercury and iodide body) and the pump tube on the pump is pulled off briefly.
  • the pump tube attachment point of the lamp vessel now has some serious disadvantages. In the burning position, the pump tube is heated up strongly by the discharge arc.
  • the process for producing a lamp vessel is characterized according to the invention by the process steps listed in the main claim.
  • the further details for the manufacture of the lamp vessel result from the subclaims.
  • the optical distortions on the lamp vessel are avoided, which makes the lamp particularly suitable for use in high-quality reflector lamps.
  • lens-shaped lamp heads can be produced by using differently shaped form rollers in combination with the blow molding in order to achieve special optical effects.
  • the procedure described Particularly well suited for mechanized production so that, in addition to the qualitative advantages, a larger quantity can also be produced, and also cheaper.
  • the time-saving preforming of the squeeze or constriction accelerates the manufacturing process and reduces the rejects.
  • the manufacturing process is equally suitable for the production of discharge tubes without pumps, their possibly required envelope bulbs as well as for incandescent bulb bulbs.
  • the manufacturing process is particularly suitable for lamps with a single glass bulb (in particular made of quartz glass).
  • it is also particularly suitable for lamps which require solid and / or liquid filling components.
  • the manufacturing method is particularly suitable if the purity of the filling components and / or the lamp components is particularly important. This is particularly true for low wattage metal halide discharge lamps.
  • FIG. 1d The sequence of figures 1a to 1d shows the production of a tube piece closed on one side in accordance with the working step a) of the main claim.
  • a quartz glass tube 1 is set in rotation (A) and heated in the center by means of a flame 2 (FIG. 1a) until it can be pulled apart (C1, C2) (FIG. 1b).
  • C1, C2 C1
  • FIG. 1c the quartz tube 1 is closed in the middle by means of a rotating (B) shaping roller 4, and at the same time the area of the later tip is preformed.
  • FIG. 1c This creates two equal term, one-sided sealed pipe sections 5 (Fig. 1d), which are separated from each other after removal from the manufacturing device.
  • Fig. 1d In an alternative embodiment
  • the rotating (B) form roller 4 ' is provided on its circumference with three circumferential beads (instead of only one as in Fig. 1c), so that during the closing of the dome (through the central , highest bead) at the same time a rotationally symmetrical constriction 99 arises in the vicinity of the crest of each tube piece, which preforms the subsequent final constriction (see below).
  • a single piece of pipe 5 is inserted into a rotating (D) receptacle 6, which can optionally be connected to a vacuum VC or to an inert gas pressure p.
  • the closed end of the pipe section 5 is then heated by means of a flame 2 (Fig. 2a).
  • a vacuum VC can now be applied to the receptacle 6.
  • the flame 2 is turned off and two opposing mold jaws 7 enclose the heated end of the pipe section 5 while stopping the receptacle, the nitrogen overpressure p being simultaneously applied to the pipe section 5 at 2 bar (FIG. 2b) .
  • This process of blow molding creates the so-called blank 8 with a crest 9, a constriction 9a and a long collar 8a.
  • the area of the future lamp vessel 10 assumes an ellipsoidal shape corresponding to the mold jaws 7, as can best be seen in FIG. 2c, in which the blank 8 is shown in a top view.
  • a second possibility of producing the blank 8 ' is to heat a larger area at the closed end of the pipe section 5 with flames 2 (Fig. 2d).
  • the two opposing mold jaws 7 ' have, compared to the first possibility, an elongated base part which, when enclosing the pipe section and during molding, creates a cross-pressed area 9b with an oval cross-section (see FIG. 2f), which pre-forms the area of the pinch and one short collar 8'a at the open end of the blank 8 'leaves.
  • the initially rotationally symmetrical region of the future lamp vessel 10a or the constriction 99 (cf. FIG. 1f) is brought into its final, ellipsoidal shape (lamp vessel 10 and constriction 9a) with high accuracy.
  • This method step is also necessary in the case of a final spherical discharge vessel in order to achieve the required precision in determining the discharge volume.
  • the blank 8 can also be produced by first providing a quartz glass tube which is open on both sides with the aid of the shaping roller 4 and subsequent use of the blow molding with the shaping jaws 7, and finally with the future lamp vessel 10.
  • FIGS. 3a to 3d are used to consider the further workflow.
  • the blank 8 is fitted in a vertical position with the tip 9 facing downwards with an interchangeable holder 11, which in turn contains two electrode systems, each consisting of a power supply 12, a sealing film 13 and an electrode 14.
  • the receptacle 11 is provided on its lateral surface with resilient elements 11a known to the person skilled in the art (preferably three elements; only one is visible in FIG. 3). These are quasi supported on the inner wall of the blank 8 and thereby hold the interchangeable receptacle by themselves.
  • the defined position of the electrodes 14 within the future lamp vessel 10 is achieved by inserting the interchangeable receptacle 11 into the blank 8 by means of a stamp 11b the interchangeable holder is connected via an arm 11c until the stop is lowered (shown schematically).
  • This process is also well known to the person skilled in the construction of fixtures and is therefore not shown separately (FIG. 3a).
  • the correct spacing of the electrodes from one another can additionally be supported by a spacer 14a made of quartz glass or a similar material. This spacer (only shown in Fig. 3a) extends between the two electrode systems outside the interchangeable holder. During the squeezing process, this is also heated and squeezed and thus remains in the squeeze.
  • a flushing cannula 17 which extends into the lamp vessel 10 is guided through an axial bore 15 in the interchangeable receptacle 11 in a processing station 16 of the squeezing machine. It is used to heat the lamp vessel 10 to about 1000 ° C. while the lamp vessel 10 is heating up at the same time An inert gas flow of approximately 50 to approximately 300 l / h (depending on the vessel volume) is conducted for a period of approximately 6 seconds, with the aim of removing impurities within the lamp vessel 10 (FIG. 3b) In preparation for the subsequent work step, the lamp vessel 10 is now cooled to approximately 60 ° C. by means of blown air.
  • the blank 8 which is equipped with the interchangeable holder 11 and the electrode system and is annealed for cleaning, is then lowered in the processing station 16 onto the ring aperture 18, the flushing cannula 17 is removed, the flames 2 swivel away to the side and a filling funnel 19 is inserted through the bore 15 of the interchangeable holder 11 .
  • the required filling substances 20 are introduced through this. In the case of a metal halide high-pressure discharge lamp, this is a drop of mercury and an iodide pill (FIG. 3c).
  • the filling funnel 19 is extended and the irrigation cannula 17 is retracted. Flames 2 heat the blank 8 in the area of the sealing foils 13 to approximately 2200 ° C.
  • the future argon atmosphere in the lamp vessel 10 is maintained by the flushing cannula 17 and the dome 9 is cooled from below with liquid nitrogen (LN2), the ring aperture 18, which surrounds the lamp vessel 10 from below, the area of the dome 9 to be cooled from that separates the area to be heated in the vicinity of the sealing films 13 (Fig. 3d).
  • the irrigation cannula 17 is extended and the blank 8 is sealed in the area of the sealing films 13 by a pinch 21.
  • the protruding collar 8a (or 8'a) on the blank 8 (or 8 ') proves to be particularly advantageous because it protects the filling components and the foils during heating against contamination by the flames.
  • To the Crushing is used for known crimping jaws (two or four) (cf. the parallel application with the registration number (our file number VPA 88 P 5523 E)).
  • the filling substances 20 are partially evaporated by the lack of argon purging and by the glowing electrodes 14, and the pressure prevailing in the lamp vessel 10 increases.
  • the crimping jaws are provided with shaped jaw attachments corresponding to the final shape of the lamp vessel 10 (not shown).
  • the protruding collar is cut off.
  • this collar can advantageously be used during further assembly and therefore remains on the vessel.
  • Such a lamp vessel 10 for a metal halide high-pressure discharge lamp without an envelope bulb is in itself already operational.
  • the electrode system consisting of power supplies 12, electrodes 14 'and a melted in the pinch holder 14', inside the lamp vessel 10 'only with an incandescent filament 14 provided and the filling process (Fig. 3c) to be adapted to the requirements of a halogen incandescent lamp.
  • the filling methods of the filling gas described above can be successfully used for catalyst filling pressures up to approx. 1000 mbar. However, if filling pressures above 1000 mbar are desired, the required amount of the filling gas in question must be frozen out in the lamp vessel 10 before the squeezing process. Depending on the filling pressure, this can be done either by spraying the lamp vessel 10 with a frozen liquid gas (e.g. nitrogen) or by immersing it in the same. These methods are also generally known to the person skilled in the art and do not require any further explanations here.
  • a frozen liquid gas e.g. nitrogen
  • FIGS. 5a to 5c illustrate the manner in which a lamp vessel 10 for a metal halide high-pressure discharge lamp according to FIG. 4 is provided with an envelope bulb 22 if this is not to be operated without one.
  • the envelope bulb 22 is filled with an inert gas in the present example, similar to the lamp vessel 10. A detailed description of these working steps can be omitted here, since they are essentially the same as in the previously described manufacture of the lamp vessel 10.
  • FIG. 5a shows a lamp vessel 10 for a high-pressure metal halide discharge lamp on its Power supply lines 12 have been extended with a further pair of sealing foils 23 and with further power supply lines 24, the ends of which are clamped in a self-holding interchangeable receptacle 25.
  • the interchangeable receptacle 25 with the lamp vessel 10 equipped in this way is guided by means of a device at a precisely predetermined location into the envelope bulb 22 which was previously provided with a dome on one side.
  • the envelope piston 22 located in a holder 26 is heated in the region of the sealing foils 23 by means of the flames 2 and at the same time is flushed with the desired gas, for example nitrogen, through a flushing cannula 27.
  • the desired gas for example nitrogen
  • the envelope piston 22 is sealed in the heated area by means of the pinch jaws 28 (only partially visible) by means of a pinch 29 (FIG. 5b).
  • the result is a metal halide lamp 30 which has no disruptive pump tube either on the discharge vessel or on the envelope bulb 22.
  • the irrigation cannula 27 is pulled out of the lamp vessel 30 thus obtained, the lamp vessel 30 of the holder 26 and the interchangeable holder 25 are removed from the lamp vessel 30 and the protruding tube piece 22 'is separated (FIG. 5c).
  • the lamp vessel 10 ' In the case of a halogen incandescent lamp, the lamp vessel 10 'consists of tempered glass and the electrode system 12, 14' requires no sealing foils.
  • the lamp vessel can be enclosed by an envelope bulb 22 be, as shown in the example of Figure 6b, wherein the envelope piston 22 is equipped with a base 32 of the type E27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP89120989A 1988-11-15 1989-11-13 Méthode de fabrication d'une enceinte de lampe Expired - Lifetime EP0369370B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838697 1988-11-15
DE3838697A DE3838697A1 (de) 1988-11-15 1988-11-15 Verfahren zur herstellung eines lampengefaesses

Publications (3)

Publication Number Publication Date
EP0369370A2 true EP0369370A2 (fr) 1990-05-23
EP0369370A3 EP0369370A3 (fr) 1991-04-17
EP0369370B1 EP0369370B1 (fr) 1994-06-08

Family

ID=6367227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120989A Expired - Lifetime EP0369370B1 (fr) 1988-11-15 1989-11-13 Méthode de fabrication d'une enceinte de lampe

Country Status (3)

Country Link
EP (1) EP0369370B1 (fr)
JP (1) JPH02186530A (fr)
DE (2) DE3838697A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591777A2 (fr) * 1992-10-05 1994-04-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Méthode de fabrication d'une lampe à décharge à haute pression de faible puissance à pincement unique et lampes à décharge à haute pression
EP0810623A2 (fr) * 1996-05-28 1997-12-03 Schott Glaswerke Procédé de fabrication d'une lampe et lampe fabriquée suivant ledit procédé
EP1130618A1 (fr) * 2000-02-29 2001-09-05 SIGNAL LUX ITALIA S.p.A. Lampe fluorescente et procédé pour sa fabrication
CN112723723A (zh) * 2020-12-25 2021-04-30 新沂海福尔通用仪表有限公司 一种新型玻璃拉管的充氮加压设备及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4555591B2 (ja) * 2004-03-31 2010-10-06 株式会社トゥルーウェル 片口放電灯の製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262287C (fr) * 1912-07-17
GB282057A (en) * 1926-12-09 1928-03-22 Gen Electric Co Ltd Improvements in the manufacture of electric incandescent lamp bulbs from glass tubing
FR700838A (fr) * 1929-11-07 1931-03-07 Machine pour la fabrication de lampes électriques à incandescence et articles analogues
US3277539A (en) * 1963-06-06 1966-10-11 Isenschmid Device for the pouring of metals into moulds
FR2194045A1 (fr) * 1972-07-24 1974-02-22 Thorn Electrical Ind Ltd
US4717852A (en) * 1982-08-30 1988-01-05 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Low-power, high-pressure discharge lamp
US4810932A (en) * 1985-11-15 1989-03-07 General Electric Company Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262287C (fr) * 1912-07-17
GB282057A (en) * 1926-12-09 1928-03-22 Gen Electric Co Ltd Improvements in the manufacture of electric incandescent lamp bulbs from glass tubing
FR700838A (fr) * 1929-11-07 1931-03-07 Machine pour la fabrication de lampes électriques à incandescence et articles analogues
US3277539A (en) * 1963-06-06 1966-10-11 Isenschmid Device for the pouring of metals into moulds
FR2194045A1 (fr) * 1972-07-24 1974-02-22 Thorn Electrical Ind Ltd
US4717852A (en) * 1982-08-30 1988-01-05 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Low-power, high-pressure discharge lamp
US4810932A (en) * 1985-11-15 1989-03-07 General Electric Company Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591777A2 (fr) * 1992-10-05 1994-04-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Méthode de fabrication d'une lampe à décharge à haute pression de faible puissance à pincement unique et lampes à décharge à haute pression
EP0591777A3 (fr) * 1992-10-05 1995-05-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Méthode de fabrication d'une lampe à décharge à haute pression de faible puissance à pincement unique et lampes à décharge à haute pression.
US5528101A (en) * 1992-10-05 1996-06-18 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh Single-ended low-power discharge lamp, and method of its manufacture
EP0810623A2 (fr) * 1996-05-28 1997-12-03 Schott Glaswerke Procédé de fabrication d'une lampe et lampe fabriquée suivant ledit procédé
EP0810623A3 (fr) * 1996-05-28 1998-03-04 Schott Glaswerke Procédé de fabrication d'une lampe et lampe fabriquée suivant ledit procédé
EP1130618A1 (fr) * 2000-02-29 2001-09-05 SIGNAL LUX ITALIA S.p.A. Lampe fluorescente et procédé pour sa fabrication
CN112723723A (zh) * 2020-12-25 2021-04-30 新沂海福尔通用仪表有限公司 一种新型玻璃拉管的充氮加压设备及其使用方法
CN112723723B (zh) * 2020-12-25 2022-03-29 江苏晶隆科技有限公司 一种新型玻璃拉管的充氮加压设备及其使用方法

Also Published As

Publication number Publication date
EP0369370B1 (fr) 1994-06-08
DE58907829D1 (de) 1994-07-14
JPH02186530A (ja) 1990-07-20
EP0369370A3 (fr) 1991-04-17
DE3838697A1 (de) 1990-05-17

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