EP2106614A2 - Schweisshilfe für eine glühwendel - Google Patents
Schweisshilfe für eine glühwendelInfo
- Publication number
- EP2106614A2 EP2106614A2 EP07847851A EP07847851A EP2106614A2 EP 2106614 A2 EP2106614 A2 EP 2106614A2 EP 07847851 A EP07847851 A EP 07847851A EP 07847851 A EP07847851 A EP 07847851A EP 2106614 A2 EP2106614 A2 EP 2106614A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- filament
- welding aid
- distance
- lamp
- power
- 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
Links
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 welding aid for a filament of a lamp, a lamp with such a welding aid, and a method for attaching such a welding aid, wherein the welding aid is adapted to connect the filament to a current-carrying carrier.
- connection between an incandescent filament and a power supply is produced by means of welding.
- welding aids are used, which are usually made of molybdenum and ensure that between the filament and power supply, a firm connection.
- a molybdenum foil is placed around the end of the incandescent filament to be connected to the power supply, wherein the molybdenum foil must have a certain distance d from the actual filament body in order to pass the incandescent filament through the welding process not to damage.
- 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. In addition, the transport of tungsten increases from the middle of the coil to the coil ends, which can lead to winding short-circuits and ultimately to a reduced lamp life.
- the object of the present invention is therefore to provide a welding aid, as well as a lamp with such a welding aid and a method for attaching such a welding aid, which improves the above-mentioned disadvantages of the prior art.
- a welding aid as well as a lamp with such a welding aid and a method for attaching such a welding aid, wherein the welding aid is designed to connect a filament end with a current-carrying carrier, and this at a certain distance d from the filament body is arranged, wherein the distance d as a function of a Power P at which the lamp is operated is fixed.
- 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.
- PW proved 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.
- Particularly advantageous is an embodiment in which the scaling ratio of distance to power
- the temperature gradient is reduced, and improves the luminance and the light distribution, whereby a longer life of the lamp is achieved.
- Fig. 1 A perspective cutaway view of a first embodiment of the invention
- Fig. 2A A plan view of the embodiment shown in Figure 1, wherein a power P 1 is used;
- FIG. 2B a plan view of the exemplary embodiment illustrated in FIG. 1, wherein a power P2 is used.
- Preferred embodiment of the invention
- FIG. 1 shows a perspective cutaway view of a first exemplary embodiment of the present invention, in which a welding aid 2 is arranged at a specific distance d from a helical body 4 of an incandescent filament 8.
- the welding aid 2 may for example consist of a molybdenum tape, a molybdenum pipe or a molybdenum foil which is arranged around an incandescent 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 being
- FIGS. 2A and 2B show the change in the distance d when the incandescent filament 8 is to be operated with different powers Pi and P 2 , respectively.
- FIG. 2A shows the arrangement of the welding aid 2 on the filament body 4 when the filament 8 is operated with a power Pi. If one puts the above genann ⁇
- FIG. 2B likewise shows the arrangement of the welding aid 2 with respect to the filamentary body 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 incandescent filament 8.
- 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)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Resistance Heating (AREA)
- Wire Processing (AREA)
Abstract
Description
Claims
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 true EP2106614A2 (de) | 2009-10-07 |
EP2106614B1 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 (de) |
EP (1) | EP2106614B1 (de) |
JP (1) | JP5254245B2 (de) |
CN (1) | CN101536145B (de) |
DE (1) | DE102006060025A1 (de) |
WO (1) | WO2008074638A2 (de) |
Family Cites Families (15)
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 (de) * | 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 |
-
2006
- 2006-12-19 DE DE102006060025A patent/DE102006060025A1/de not_active Withdrawn
-
2007
- 2007-12-05 WO PCT/EP2007/063360 patent/WO2008074638A2/de active Application Filing
- 2007-12-05 US US12/312,624 patent/US8212476B2/en not_active Expired - Fee Related
- 2007-12-05 CN CN2007800418824A patent/CN101536145B/zh not_active Expired - Fee Related
- 2007-12-05 JP JP2009538730A patent/JP5254245B2/ja not_active Expired - Fee Related
- 2007-12-05 EP EP07847851.8A patent/EP2106614B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008074638A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008074638A3 (de) | 2009-01-15 |
US8212476B2 (en) | 2012-07-03 |
US20100320900A1 (en) | 2010-12-23 |
CN101536145A (zh) | 2009-09-16 |
EP2106614B1 (de) | 2018-11-28 |
JP5254245B2 (ja) | 2013-08-07 |
DE102006060025A1 (de) | 2008-06-26 |
CN101536145B (zh) | 2011-06-22 |
WO2008074638A2 (de) | 2008-06-26 |
JP2010511275A (ja) | 2010-04-08 |
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