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EP1911065A2 - Lampe électrique à ampoule externe - Google Patents

Lampe électrique à ampoule externe

Info

Publication number
EP1911065A2
EP1911065A2 EP06762862A EP06762862A EP1911065A2 EP 1911065 A2 EP1911065 A2 EP 1911065A2 EP 06762862 A EP06762862 A EP 06762862A EP 06762862 A EP06762862 A EP 06762862A EP 1911065 A2 EP1911065 A2 EP 1911065A2
Authority
EP
European Patent Office
Prior art keywords
outer bulb
neck
sealing
electric lamp
narrowed
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
EP06762862A
Other languages
German (de)
English (en)
Other versions
EP1911065B1 (fr
Inventor
Thomas Bittmann
Jürgen Gräf
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.)
Ledvance 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 EP1911065A2 publication Critical patent/EP1911065A2/fr
Application granted granted Critical
Publication of EP1911065B1 publication Critical patent/EP1911065B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors
    • H01J61/368—Pinched seals 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
    • H01J9/24—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 an electric lamp with outer bulb according to the preamble of claim 1
  • These are in particular metal halide lamps, high-pressure mercury discharge lamps, but also halogen lamps with outer bulb
  • the inner bulb of the lamp is sealed with sealing points on two sides
  • the lamp according to the invention has a vacuum-sealed internal piston, in particular a discharge vessel, which defines a lamp axis, and the
  • the sealing means is a pinch or melting
  • the lamp inside the lamp is a discharge arc between two electrodes or a Leuchtkorper It is electrically connected to the leading to him inner Stromzuschreibungen
  • the sealing point is in particular with a after provided externally projecting extension, which is formed as a hollow tube
  • the invention describes a special geometric design of a gas-filled protective piston by a tapering of its usually tubular diameter at the ends so far over its length, so that the convection of hot technicallykolbenfullgas over the length of the lateral sealing point of the lamp is significantly hindered by the inventive Rejuvenation of the ends of the outer col- In addition, the temperature gradient from inside to outside increases, so that the ends also become cold. This effect also transfers to the metallic current carrying components of the lateral sealing parts of the lamp.
  • the inner bulb which contains a lighting means (2) and at opposite ends by sealing point (6, 15), the films (7) included, wherein the outer bulb (14) has two narrowed neck portions (13 ) has at its ends and is slipped over the inner piston, and wherein at least one neck part (13) is fixed to a connecting portion (12) at the end of the sealing part of the inner piston, characterized in that there is a terminal portion (Z) of the sealing part the distance (D) between the neck portion and the sealing position is at most 4 mm, preferably at most 2.5 mm, this distance (D) being maintained at least to the extent that the narrowed portion of the neck portion forms a portion (Y) of the film enclosing at least 20%, in particular at least 40%, of the axial length of the film encloses the sealing point are either fusions or bruises, the Hf orm ⁇ g are designed, preferably the longest dimensions are approximately square, in particular to 30% accurate
  • the Verbi ⁇ dungsabêt is formed by an annular bead on the sealing part
  • the distance between the neck parts and the seal should be as small as possible, but it should be at least 0.1 mm, in particular at least 0.7 mm
  • An improved Kuhl Tooth is achieved by the fact that the outer bulb is filled with a cooling-mediating gas, in particular more than 50% of an inert gas such as argon Sufficient cooling is already achieved if the axial length of the narrowed region is at least 4 mm, in particular at least 6 mm
  • the diameter of the neck part in the narrowed area is either constant or smaller towards the outside
  • the total length of the narrowed neck portion should normally be at most 20 mm, preferably at most 12 mm.
  • the narrowing of a tubular glass body as a precursor of the outer bulb can be produced solely by Formroll- or Formblasreae after preheating The shorter the neck piece, the easier it can be In particular, this applies to lengths up to 6 or 10 mm
  • the constriction of the tubular glass body as a precursor of the outer bulb is produced by roll forming or blow molding processes after previous heating, combined with hot deformation by drawing out the already narrowed portions of the outer bulb
  • the rejuvenation of the ends of the outer bulb including the radii or bevels that connect the maximum and minimum radial spreads of the outer bulb with each other, at least over a length of 2 mm and a maximum over the entire length of the range with tightly enclose the vacuum-tight sealing points of the lamp
  • the minimum inside diameter of the outer tube should not be more than 4 mm from the maximum outer diameter of the side sealing parts of the lamp at its tapered points.
  • the minimum inner diameter of the outer piston can correspond to the maximum outer diameter of the sealing point and even partially interconnected
  • the propositionkolbengeomet ⁇ e similar to the geometry of the inner vessel designed, which basically means that the distance between the outer bulb and the Verlang ceremoniess? the discharge vessel, so the areas with the vacuum-tight Strom malbowsbau Marie should be at most 4 mm
  • this technique is suitable for a relatively low power metal halide lamp of 35 to 250 watts
  • the tapering of the outer bulb over a long length can be carried out preferably in combination with a bead / bump attachment technique at the sealing point, in particular the extension part of a sealing of the inner vessel.
  • This technique of creating a bead is known per se, for example from EP-A 588 602 or EP-A 465 083 and DE 10 2004 056 452 3
  • Equally combinable is the tapering with the pump hole closure via a hole on the burner tube and subsequent closure over the outer bulb glass. This is another advantage, because the pre-rolled area can be reduced by an additional extraction, which has resulted in a particularly favorable embodiment, glass mass which makes the closure of the pumping hole underneath easier
  • a "normal" taper over a maximum length of 55% of the diameter of the outer bulb can be made relatively easily by a multi-stage roll forming process with rotating glass
  • a typical example is a length of tapered part, which is defined here as a neck length, from 2 to 12 mm with a typical diameter of about 22 mm of the outer bulb
  • the production of a longer neck part is with a multi-stage free rolling process as known extremely difficult to produce or from lengths of at least 75% of the diameter of the outer bulb, for example, of about 17 mm with a 22 mm diameter, no longer technically useful
  • An alternative is one Technique in which several glass tubes of different diameters are placed behind one another
  • the disadvantage is the production-related and cost-related overhead, due to additional lamp components
  • the maximum possible length HTL of the neck part that is to say approximately 50% of the outside diameter of the outer bulb, is manufactured using the known free rolling process.
  • the actual end length of the neck portion is determined in a further step achieved by pulling in the area of the already rolled section This also has the advantage that any matenal accumulations on the pre-rolled area can be pulled out again to uniform wall thicknesses
  • the outer bulb is advantageously a piston with a central belly and terminally adjacent, in particular attached or molded, tube sections, which are referred to here as neck parts
  • a preferred embodiment of the invention provides for a tubular extension piece of the sealing part on which a bead adjoins. It is in particular applied or molded.
  • the provision of a radially symmetrical bead is thus possible even with a non-radial-symmetrical pinch.
  • the bead can be produced from the sealing position be placed, for example, by upsetting, or as a separate bead on it The breaking strength of the connection between the outer bulb and the bead increases, the more intimate the contact between the two
  • Both inner flask and outer flask made of quartz glass or hard glass are preferred.
  • a possible concrete manufacturing process is based on the following steps
  • FIG. 1 shows a halogen incandescent lamp in side view (FIG. 1a) and in cross section (FIG. 1b);
  • FIG. 2 shows an embodiment of a metal halide lamp in a side view (FIG. 2a) and in cross section (FIG. 2b):
  • FIGS. 3 to 5 show the method steps of producing a metal halide lamp according to FIG. 2.
  • FIG. 1a shows the lateral view of a double-sided pinched halogen bulb. It consists of an inner piston 1, in the middle part 4, a luminous body 2 is arranged axially.
  • the ends 5 of the filament are embedded in their function as an internal power supply directly into the pinch 6, which acts as a seal, and there connected to a pinch film 7.
  • the pinch 6 has the outside as an extension part, which can also serve as a base component, a tubular glass sleeve 11 which is integrally formed on the pinch.
  • a bead 12 is formed transversely to the lamp axis to the outside.
  • an outer bulb 14 designed as a narrowed cylindrical neck portion 13 engages, so that the outer bulb with two neck portions 13 extends between the two beads 12 on both sides of the middle portion 4.
  • a socket may at one end of the sealing part to be fitted, as known per se, wherein the base (not called DAR) an electrical contact element ⁇ which is electrically conductively connected to a line leading to a bulb current supply, wherein the contact element in the tubular extension of the sealing part is housed.
  • the distance D between the narrowed neck portion and the H-shaped pinch 6 is 1, 5 mm. It is meant by the distance D, the average between the valley of the pinch on the broad side and the two peaks of H, see Figure 1 b.
  • An H-shaped pinch has a large surface area and therefore cools the seal very well.
  • FIG. 2 a shows a metal halide lamp 25, which is sealed by fuses 15.
  • the one neck part 13a is designed to constrict to the outside, while the other neck part 13b has a constant diameter, but is made of a separate pipe stucco, which is attached to the outer bulb at the inwardly directed slope
  • the cold full pressure in the outer bulb with argon filling is particularly 200 to 400 mbar
  • the discharge vessel is formed as a preparation step, it is stooped with a feed-through system and filled with a gas filling and then closed.
  • FIG. 3 shows a first step of the further production.
  • a filled inner vessel 30 made of glass is provided, in particular a tube made of quartz glass, which defines an inner volume and has two sealed ends 31, wherein one current carrying system 32 from the outside over
  • the system is in particular an electrode system comprising at least one electrode, a foil and a power supply.
  • the internal volume of the discharge vessel is filled with a gaseous filling, the end 31 of the inner vessel being defined by a sealing point 34 which is a central one Part of Strom malbowssystems gas-tight surrounds, and an extension part with bead 33, which contains an external part of Strom malbowssystems, is formed
  • a second step the provision of a second outer tube 35 out of quartz glass with a given maximum outer diameter with a larger dimension than d
  • a fourth step the forming of a first narrowed neck portion 36 at a first end of the second tube 35 over a length of typically 4 to 10 mm by means of a Formrollreaes This is the area to be deformed heated on the glass part and with a rotating forming roller 37 as far pushed inside, that the neck portion 36 results in a reduced diameter
  • a second narrowed neck part is formed at the second end 31 b by means of a second shaping roller 39 analogously to the fourth step, see FIG. 4.
  • the described forming rollers are additionally combined with a withdrawal on the already preformed glass part by heating and subsequent axial drawing (arrow 40), so that the neck portion 36 is additionally extended; see FIG. 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

L'invention concerne une ampoule allongée (1) d'une lampe, cette ampoule définissant un axe longitudinal (A). Ladite ampoule est fermée à ses extrémités opposées par des pièces d'étanchéité (6; 32), sur lesquelles est fixée une ampoule externe au moyen d'un bourrelet. Un col adjacent à l'ampoule externe est réalisé selon un procédé spécial.
EP06762862.8A 2005-07-29 2006-07-27 Lampe électrique à ampoule externe Not-in-force EP1911065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005035779A DE102005035779A1 (de) 2005-07-29 2005-07-29 Elektrische Lampe mit Aussenkolben
PCT/EP2006/007470 WO2007014705A2 (fr) 2005-07-29 2006-07-27 Lampe électrique à ampoule externe

Publications (2)

Publication Number Publication Date
EP1911065A2 true EP1911065A2 (fr) 2008-04-16
EP1911065B1 EP1911065B1 (fr) 2016-11-30

Family

ID=37575204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762862.8A Not-in-force EP1911065B1 (fr) 2005-07-29 2006-07-27 Lampe électrique à ampoule externe

Country Status (7)

Country Link
US (1) US20090115303A1 (fr)
EP (1) EP1911065B1 (fr)
JP (1) JP4755688B2 (fr)
CN (1) CN101233599B (fr)
CA (1) CA2617574A1 (fr)
DE (1) DE102005035779A1 (fr)
WO (1) WO2007014705A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015894A1 (de) 2009-04-01 2010-10-07 Osram Gesellschaft mit beschränkter Haftung Elektrische Lampe
DE102009016057A1 (de) * 2009-04-02 2010-10-07 Osram Gesellschaft mit beschränkter Haftung Elektrische Lampe mit Außenkolben

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935668A (en) * 1988-02-18 1990-06-19 General Electric Company Metal halide lamp having vacuum shroud for improved performance
US4949003A (en) * 1988-12-21 1990-08-14 Gte Products Corporation Oxygen protected electric lamp
CA2042143A1 (fr) * 1990-06-27 1991-12-28 John J. Biel Lampe a decharge a protection peripherique et methode de fabrication connexe
EP0533325B1 (fr) * 1991-07-25 1996-01-10 Hamamatsu Photonics K.K. Tube à décharge
US5253153A (en) * 1992-09-16 1993-10-12 General Electric Company Vehicle headlamp comprising a metal-halide discharge lamp including an inner envelope and a surrounding shroud
JP3246147B2 (ja) * 1993-12-27 2002-01-15 松下電器産業株式会社 放電ランプの製造方法
JPH08273599A (ja) * 1995-03-30 1996-10-18 Toshiba Lighting & Technol Corp メタルハライドランプ、点灯装置および照明装置
EP0964431B2 (fr) * 1998-06-12 2007-04-04 Matsushita Electric Industrial Co., Ltd. Lampe à décharge
JP3652602B2 (ja) * 2000-12-05 2005-05-25 株式会社小糸製作所 アークチューブおよびその製造方法
JP3916887B2 (ja) * 2001-06-05 2007-05-23 株式会社小糸製作所 照明装置
DE10325554A1 (de) * 2003-06-05 2004-12-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Herstellung einer elektrischen Lampe mit Außenkolben
US7134290B2 (en) * 2004-07-16 2006-11-14 Carrier Corporation Phase correction method and apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007014705A3 *

Also Published As

Publication number Publication date
WO2007014705A3 (fr) 2007-05-31
WO2007014705A2 (fr) 2007-02-08
CN101233599A (zh) 2008-07-30
JP2009503774A (ja) 2009-01-29
DE102005035779A1 (de) 2007-02-01
EP1911065B1 (fr) 2016-11-30
US20090115303A1 (en) 2009-05-07
JP4755688B2 (ja) 2011-08-24
CA2617574A1 (fr) 2007-02-08
CN101233599B (zh) 2010-06-16

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