EP2106614B1 - Schweisshilfe für eine glühwendel - Google Patents

Schweisshilfe für eine glühwendel Download PDF

Info

Publication number
EP2106614B1
EP2106614B1 EP07847851.8A EP07847851A EP2106614B1 EP 2106614 B1 EP2106614 B1 EP 2106614B1 EP 07847851 A EP07847851 A EP 07847851A EP 2106614 B1 EP2106614 B1 EP 2106614B1
Authority
EP
European Patent Office
Prior art keywords
filament
distance
spiral
welding aid
lamp
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
EP07847851.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2106614A2 (de
Inventor
Sascha Zelt
Frank Auer
Christian Seichter
Gerhard Behr
Klaus Wittmann
Peter Helbig
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 EP2106614A2 publication Critical patent/EP2106614A2/de
Application granted granted Critical
Publication of EP2106614B1 publication Critical patent/EP2106614B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • 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
    • H01K3/06—Attaching of incandescent bodies to mount

Definitions

  • the present invention relates to a lamp with a welding aid for a filament, wherein the welding aid is adapted to connect the filament to a current-carrying carrier.
  • connection between a filament and a power supply is made by welding.
  • welding aids are used, which are usually made of molybdenum and ensure that between the filament and power supply, a firm connection.
  • the molybdenum foil may be oriented such that twisting of the filament during welding is prevented. But instead of a slide can also be Molybdenum tube or a molybdenum band may be placed around the filament wire.
  • a disadvantage of using welding aids is that due to the additional heat capacity of the welding aid, the temperature of the first 1-3 turns of the filament is reduced. As a result, a temperature gradient forms over the length of the incandescent filament, whereby the temperature drops towards the ends of the incandescent filament. This results in a reduced or inhomogeneous luminance, which in turn results in a non-optimal light distribution in the lamp, especially in the headlight.
  • the tungsten transport increases from the center of the coil to the coil ends, which can lead to wind short circuits and ultimately to a reduced lamp life.
  • the US 2005/0073252 A1 discloses a halogen incandescent lamp with a filament and a welding aid for the filament.
  • the object of the present invention is therefore to provide a lamp with a welding aid for a filament, which improves the above-mentioned disadvantages of the prior art.
  • the distance d of the welding aid to the filament body Due to this power-dependent scaling of the distance d of the welding aid to the filament body, the distance d can be minimized for lamps with low wattages on the one hand, whereby the component size can be reduced overall. On the other hand, the optimized distance d reduces the temperature decrease, as a result of which the temperature gradient can be significantly reduced.
  • the distance from welding aid to filamentary body was determined mainly by the predetermined geometry of incandescent filament and current-carrying carrier.
  • the other constraint to be met was, of course, that the welding aid not be placed too close to the filament body.
  • the distance d scales with the power P.
  • a scaling of 0,018 ⁇ d p ⁇ 0.06 mm W has proven to be particularly advantageous.
  • a corresponding scaling led to a very low temperature gradient and therefore causes a homogeneous luminance, which in turn leads to an improved light distribution in the headlight. For example, such a sharp cut-off line can be ensured if the lamp is to be used as a headlight for the low beam.
  • the temperature gradient is reduced, and improves the luminance and the light distribution, whereby a longer life of the lamp is achieved.
  • Fig. 1 shows a perspective cutaway view of a first embodiment of the present invention, in which a welding aid 2 at a certain distance d from a helical body 4 of a filament 8 is arranged.
  • the welding aid 2 may for example consist of a molybdenum tape, a molybdenum pipe or a molybdenum foil which is arranged around a filament end 10 of the incandescent filament 8 in order to connect the incandescent filament end 10 to a current-carrying carrier 12.
  • the distance d is determined by a power P at which the filament 8 is to be operated, this scaling being determined by the relation 0,018 ⁇ d P ⁇ 0.06 is fixed.
  • FIGS. 2A and 2B show the change of the distance d when the filament 8 is to be operated with different powers P 1 and P 2 .
  • FIG. 2B also shows the arrangement of the welding aid 2 to the Glühwendel Sciences 4.
  • this lamp is operated with a lower power P 2 , ie P 2 ⁇ P 1 , so that the welding aid 2 is arranged at a second distance d 2 on the filament 8.
  • P 2 a lower power
  • d 2 P 2 0,022 mm W to meet
  • the distance d 2 ⁇ d 1 must be selected.
  • a welding aid for an incandescent filament of a lamp or a lamp with such a welding aid wherein the incandescent filament has an incandescent filament body and at least one filament end, and the welding aid is arranged at a distance d from the filament body and is adapted to the at least one filament end to connect with a current-carrying carrier, wherein the Distance d is determined depending on a power P at which the lamp is operated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Wire Processing (AREA)
EP07847851.8A 2006-12-19 2007-12-05 Schweisshilfe für eine glühwendel Not-in-force EP2106614B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060025A DE102006060025A1 (de) 2006-12-19 2006-12-19 Schweißhilfe für eine Glühwendel
PCT/EP2007/063360 WO2008074638A2 (de) 2006-12-19 2007-12-05 Schweisshilfe für eine glühwendel

Publications (2)

Publication Number Publication Date
EP2106614A2 EP2106614A2 (de) 2009-10-07
EP2106614B1 true EP2106614B1 (de) 2018-11-28

Family

ID=39431408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07847851.8A Not-in-force EP2106614B1 (de) 2006-12-19 2007-12-05 Schweisshilfe für eine glühwendel

Country Status (6)

Country Link
US (1) US8212476B2 (zh)
EP (1) EP2106614B1 (zh)
JP (1) JP5254245B2 (zh)
CN (1) CN101536145B (zh)
DE (1) DE102006060025A1 (zh)
WO (1) WO2008074638A2 (zh)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54127171A (en) * 1978-03-24 1979-10-02 Toshiba Corp Incandescent lamp
JPS6145560A (ja) * 1984-07-23 1986-03-05 スタンレー電気株式会社 ハロゲン電球
US4683397A (en) * 1986-04-14 1987-07-28 Gte Products Corporation Compact incandescent coiled coil filament
JPH0441568Y2 (zh) * 1987-11-25 1992-09-30
JP3047209B2 (ja) * 1995-03-16 2000-05-29 株式会社小糸製作所 電球のフィラメント支持構造及びフィラメントの支持体への固定方法
DE19544012A1 (de) * 1995-11-27 1997-05-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Glühlampe mit Abblendkappe und Verfahren zur Herstellung einer derartigen Lampe sowie Abblendkappe für eine elektrische Glühlampe
JP3674218B2 (ja) * 1997-02-28 2005-07-20 東芝ライテック株式会社 電球および照明器具
JP2001345077A (ja) * 2000-03-30 2001-12-14 Toshiba Lighting & Technology Corp ハロゲン電球および照明装置
JP3473597B2 (ja) * 2001-09-05 2003-12-08 松下電器産業株式会社 管球用フイラメントコイルおよびこれを用いた白熱電球
JP3594138B2 (ja) * 2002-01-25 2004-11-24 ノーリツ鋼機株式会社 ハロゲンランプ
DE10219729A1 (de) * 2002-05-02 2003-11-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer
JP4254463B2 (ja) * 2003-10-03 2009-04-15 ウシオ電機株式会社 自動車用ハロゲン電球
GB2407702A (en) * 2003-10-28 2005-05-04 Sharp Kk A semiconductor light-emitting device
EP1560258A3 (de) * 2003-12-12 2008-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Glühlampe für Fahrzeugscheinwerfer
DE102004004017A1 (de) 2004-01-22 2005-08-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Glühlampe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US8212476B2 (en) 2012-07-03
US20100320900A1 (en) 2010-12-23
JP2010511275A (ja) 2010-04-08
CN101536145A (zh) 2009-09-16
WO2008074638A3 (de) 2009-01-15
EP2106614A2 (de) 2009-10-07
WO2008074638A2 (de) 2008-06-26
CN101536145B (zh) 2011-06-22
JP5254245B2 (ja) 2013-08-07
DE102006060025A1 (de) 2008-06-26

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