EP0914674A1 - Ampoule electrique - Google Patents

Ampoule electrique

Info

Publication number
EP0914674A1
EP0914674A1 EP97951065A EP97951065A EP0914674A1 EP 0914674 A1 EP0914674 A1 EP 0914674A1 EP 97951065 A EP97951065 A EP 97951065A EP 97951065 A EP97951065 A EP 97951065A EP 0914674 A1 EP0914674 A1 EP 0914674A1
Authority
EP
European Patent Office
Prior art keywords
filament
power supply
flattened
supply wire
leg
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
EP97951065A
Other languages
German (de)
English (en)
Other versions
EP0914674B1 (fr
Inventor
Rolf Minder
Rolf Kiesel
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 EP0914674A1 publication Critical patent/EP0914674A1/fr
Application granted granted Critical
Publication of EP0914674B1 publication Critical patent/EP0914674B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Definitions

  • the invention relates to an electric lamp according to the preamble of patent claim 1.
  • Such an electric lamp is disclosed, for example, in Japanese Utility Model 49-37422.
  • This utility model describes the attachment of an incandescent filament to a power supply wire which has a flattened, U-shaped end.
  • the two U-legs In their connection area, the two U-legs have a reduced wire thickness and thereby form a receptacle which is matched to the filament diameter and in which an uncoiled filament end is arranged. Outside the receptacle, the two U-legs touch, so that the receptacle for the uncoiled filament end reminds of a needle eye.
  • the filament is attached and electrically contacted with the aid of power supply wires which have a flattened U-shaped end.
  • the two U-legs of the U-shaped power supply wire section form a gap in which a coiled end of the filament is arranged.
  • the gap width is smaller than the outer diameter of the coiled filament end, so that the filament is clamped in the gap-shaped receptacle.
  • the gap width is advantageously 60 to 90 percent and preferably 70 percent of the outside diameter of the coiled filament end.
  • the ends of the U-legs are advantageously welded to one another in two exemplary embodiments of the invention, while in a further exemplary embodiment the end of the free U-leg is welded to the non-flattened power supply wire section for this purpose is.
  • the free U-leg has an angled end which is welded to the other U-leg.
  • the gap width can be varied within certain limits, given the wire thickness and the degree of flattening of the power supply wire.
  • the incandescent filament end projecting beyond the U-legs is advantageously welded to the power supply wire. This ensures good electrical contact between the filament and the power supply wire with low contact resistance.
  • the invention is particularly suitable for fastening double-coiled filament coils that have single-coiled filament ends.
  • FIG. 1 is a schematic representation of an electric light bulb with the filament attachment according to the invention
  • Figure 2 is a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the first embodiment of the invention in a schematic representation
  • Figure 3 is a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the second
  • Figure 4 is a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the third embodiment of the invention in a schematic representation
  • Figure 5 is a side view of the U-shaped end of a power supply wire and the coil end fixed thereon according to the fourth embodiment of the invention in a schematic representation
  • FIG. 1 shows a schematic illustration of an electric incandescent lamp with the filament fastening according to the invention.
  • This incandescent lamp has a glass lamp bulb 1, a bayonet base 2 and a double-coiled filament 3 enclosed in the lamp bulb 1, which is held and electrically contacted by means of two power supply wires 4, 5 melted in a glass bead 6.
  • the ends 4a, 5a of the power supply wires 4, 5 are flattened and U-shaped.
  • a single-ended filament 3a of the filament 3 is separated by the U-shaped section 4a, 5a of a power supply. guidewire 4, 5 held. So far, all four embodiments are the same.
  • FIG. 2 shows a first embodiment of the power supply wire 4 or 5 from FIG. 1 with the helix end attached to it.
  • the end 41 of this power supply wire is flattened and U-shaped, so that the U-shaped section 41 has a free U-leg 42 and a U-leg 44 connected to the non-flattened section 43 of the power supply wire.
  • the end 42a of the free U-leg 42 is connected to the non-flattened section 43 of the power supply wire by a weld spot 46.
  • the two flattened U-legs 42, 44 define a gap 45 in which a simply coiled end 3a of the filament 3 is arranged with a clamping effect.
  • the width of the gap 45 is determined by the flattening of the power supply wire.
  • the gap width is approximately 70 percent of the outer diameter of the single-ended filament 3a. That is, the single coiled end 3a of the filament 3 is compressed in the gap 45 to approximately 70 percent of its original outside diameter.
  • the spiral end protruding beyond the U-shaped section 41 is welded to the power supply wire.
  • This type of filament fastening is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 700 ⁇ m.
  • the power supply wires 4, 5 have a diameter or a wire thickness between 0.4 mm and 0.8 mm in the non-flattened section 43.
  • FIG. 3 shows a second exemplary embodiment of the power supply wire 4 or 5 with the spiral end attached to it.
  • the end 51 of the power supply wire is flattened and U-shaped, so that the U-shaped section 51 has a flattened free U-leg 52 and one attached to the non-flattened section 53 of the power supply wire.
  • closed flattened U-leg 54 has.
  • the end 52a of the free U-leg 52 is not flattened. It 52a has the same diameter or the same wire thickness as the non-flattened section 53 of the power supply wire.
  • the non-flattened end 52a of the free U-leg 52 is connected to the other U-leg 54 by a welding point 56.
  • the two flattened U-legs 52, 54 define a gap 55 in which a simply coiled end 3a of the filament 3 is arranged with a clamping effect.
  • the width of the gap 55 is determined by the flattening of the power supply wire. It is chosen so that the gap width is approximately 70 percent of the outer diameter of the single-ended filament 3a. That is, the single coiled filament end 3a is compressed in the gap 55 to approximately 70 percent of its original outside diameter.
  • the spiral end projecting beyond the U-shaped section 51 is welded to the power supply wire.
  • This type of filament fastening is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 700 ⁇ m.
  • the power supply wires 4, 5 (FIG. 1) have a diameter or a wire thickness between 0.4 mm and 0.8 mm in the non-flattened section 53.
  • Figure 4 shows a third embodiment of the power supply wire 4 or 5 with the coil end attached to it.
  • the end 61 of the power supply wire is flattened and U-shaped, so that the U-shaped section 61 has a flattened free U-leg 62 and a flattened U-leg 64 connected to the non-flattened section 63 of the power supply wire.
  • the end 62a of the free U-leg 62 is angled away from it and connected to the end of the other U-leg 64 by a welding spot 66.
  • the two flattened U-legs 62, 64 define a gap 65 in which a simply coiled end 3a of the filament 3 is arranged with a clamping effect.
  • the width of the gap 65 is not only determined by the degree of flattening of the power supply wire, but also depends on the length of the angled end 62a of the free U-leg 62 and on the angle that encloses the angled end 62a with the U-leg 62.
  • the width of the gap 65 is adjusted by increasing this angle so that it is approximately 70 percent of the outside diameter of the single-coiled filament end 3a. That is, the single-helix end 3a clamped in the gap 65 is compressed to about 70 percent of its original outer diameter.
  • the spiral end protruding beyond the U-shaped section 61 is welded to the U-leg 64.
  • the angle between the free U-leg 62 and its angled end 62a is approximately 45 degrees before the U-shaped section 61 is formed and before the filament end is clamped. When the helix 3 is clamped between the two U-legs 62, 64, the angle is widened.
  • This type of filament attachment is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 2 mm.
  • the power supply wires 4, 5 (FIG. 1) have a diameter or a wire thickness between 0.4 mm and 0.8 mm in the non-flattened section 63.
  • FIG. 5 shows a fourth exemplary embodiment of the power supply wire 4 or 5 with the helix end attached to it.
  • the end 71 of the power supply wire is flattened and U-shaped, so that the U-shaped section 71 has a flattened free U-leg 72 and a flattened U-leg 74 connected to the non-flattened section 73 of the power supply wire.
  • the U-leg 74 is stepped at its end 74a, which directly adjoins the non-flattened section 73 of the power supply wire.
  • the end 72a of the free U-leg 72 is with the non-flattened section 73 of the power supply wire connected by a weld spot 76.
  • the two flattened U-legs 72, 74 define a gap 75, in which a simply coiled end 3a of the filament 3 is arranged with a clamping effect.
  • the end of the U-leg 74 connected to the non-flattened section 73 of the power supply is designed as a step 74a, via which this end of the U-leg 74 is molded onto the non-flattened section 73.
  • the width of the gap 75 is determined by the degree of flattening of the U-shaped section 71 of the power supply wire and by the height of the step 74a. It is chosen so that the width of the gap 75 is approximately 70 percent of the outside diameter of the single-ended filament 3a.
  • the coiled end 3a of the filament 3 is compressed in the gap 75 to approximately 70 percent of its original outside diameter.
  • the helical end projecting beyond the U-shaped section 71 is welded to the power supply wire.
  • This type of filament fastening is suitable for incandescent filaments 3 with an outer diameter of the filament ends 3a of up to 2 mm.
  • the power supply wires 4, 5 (FIG. 1) have a diameter or a wire thickness between 0.4 mm and 0.8 mm in the non-flattened section 73.
  • the wire thickness of the flattened U-shaped wire section 41, 51, 61, 71 in all the exemplary embodiments explained above is between 40 and 80 percent of the wire thickness or the diameter of the non-flattened section 43, 53, 63, 73 of the power supply wire.
  • the invention is not limited to the attachment and electrical contacting of double-wound filament filaments with single-filament filament ends on power supply wires in the case of electric incandescent lamps, but can also be applied to the attachment and electrical contacting of electrode filaments in fluorescent lamps or other pressure discharge lamps are used. In addition, the invention can also be applied to single-coiled filament coils with coiled ends.

Landscapes

  • Resistance Heating (AREA)
  • Glass Compositions (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne la fixation de filaments boudinés à des fils d'alimentation en courant dans des ampoules électriques. Une extrémité (41) des fils d'alimentation est aplatie et en forme de U. La section en forme de U (41) du fil d'alimentation forme un logement (45) en forme de fente destinée à l'extrémité spiralée (3a) du filament boudiné, la largeur de cette fente étant plus petite que le diamètre extérieur de l'extrémité (3a) du filament boudiné.
EP97951065A 1997-04-18 1997-11-11 Ampoule electrique Expired - Lifetime EP0914674B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19716158 1997-04-18
DE19716158 1997-04-18
PCT/DE1997/002639 WO1998048448A1 (fr) 1997-04-18 1997-11-11 Ampoule electrique

Publications (2)

Publication Number Publication Date
EP0914674A1 true EP0914674A1 (fr) 1999-05-12
EP0914674B1 EP0914674B1 (fr) 2003-06-11

Family

ID=7826849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97951065A Expired - Lifetime EP0914674B1 (fr) 1997-04-18 1997-11-11 Ampoule electrique

Country Status (12)

Country Link
US (1) US6191526B1 (fr)
EP (1) EP0914674B1 (fr)
JP (1) JP2000512802A (fr)
KR (1) KR100393462B1 (fr)
CN (1) CN1106682C (fr)
AT (1) ATE242916T1 (fr)
CA (1) CA2255081C (fr)
DE (1) DE59710277D1 (fr)
ES (1) ES2201335T3 (fr)
HU (1) HU222632B1 (fr)
NO (1) NO321194B1 (fr)
WO (1) WO1998048448A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060604A1 (fr) * 1998-05-20 1999-11-25 Koninklijke Philips Electronics N.V. Lampe incandescente a pinces de filament enroule sans mandrin
US6639364B1 (en) * 2000-06-29 2003-10-28 Koninklijke Philips Electronics N.V. Halogen incandescent capsule having filament leg clamped in press seal
EP2202781A1 (fr) * 2008-12-23 2010-06-30 Flowil International Lighting (Holding) B.V. Lampe à incandescence et support pour filament correspondant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145186A (en) 1938-07-01 1939-01-24 Gen Electric Connection for filament and lead wires
US2315504A (en) 1941-05-31 1943-04-06 Tung Sol Lamp Works Inc Miniature incandescent lamp
US3780333A (en) 1972-12-15 1973-12-18 Gte Sylvania Inc Lamp filament support means
JPH01130254A (ja) * 1987-11-16 1989-05-23 Canon Inc 文書処理装置
DE3907277A1 (de) * 1989-03-07 1990-09-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Quecksilberniederdruckentladungslampe
JPH05182641A (ja) * 1991-12-27 1993-07-23 Toshiba Lighting & Technol Corp 管球用電極及び白熱電球
JPH06231736A (ja) * 1993-02-09 1994-08-19 Toshiba Lighting & Technol Corp リード線および電球

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9848448A1 *

Also Published As

Publication number Publication date
JP2000512802A (ja) 2000-09-26
ES2201335T3 (es) 2004-03-16
NO986003D0 (no) 1998-12-18
KR100393462B1 (ko) 2003-09-19
US6191526B1 (en) 2001-02-20
CN1222249A (zh) 1999-07-07
ATE242916T1 (de) 2003-06-15
CA2255081C (fr) 2006-07-25
KR20000016646A (ko) 2000-03-25
NO321194B1 (no) 2006-04-03
HUP9901363A2 (hu) 1999-08-30
DE59710277D1 (de) 2003-07-17
HU222632B1 (hu) 2003-09-29
WO1998048448A1 (fr) 1998-10-29
NO986003L (no) 1998-12-18
EP0914674B1 (fr) 2003-06-11
CA2255081A1 (fr) 1998-10-29
CN1106682C (zh) 2003-04-23
HUP9901363A3 (en) 2000-08-28

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