EP0173995A2 - Brückenlose Wolframhalogenlampe - Google Patents

Brückenlose Wolframhalogenlampe Download PDF

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Publication number
EP0173995A2
EP0173995A2 EP85111055A EP85111055A EP0173995A2 EP 0173995 A2 EP0173995 A2 EP 0173995A2 EP 85111055 A EP85111055 A EP 85111055A EP 85111055 A EP85111055 A EP 85111055A EP 0173995 A2 EP0173995 A2 EP 0173995A2
Authority
EP
European Patent Office
Prior art keywords
filament
lamp
envelope
wire
loop
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.)
Withdrawn
Application number
EP85111055A
Other languages
English (en)
French (fr)
Other versions
EP0173995A3 (de
Inventor
Arnold E. Westlund, Jr.
Ward H. Powers
Jeffrey P. Buschmann
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 Sylvania Inc
Original Assignee
GTE Products Corp
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 GTE Products Corp filed Critical GTE Products Corp
Publication of EP0173995A2 publication Critical patent/EP0173995A2/de
Publication of EP0173995A3 publication Critical patent/EP0173995A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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 in general to incandescent lamps of the tungsten halogen type and more particularly to an improvement in the filament support structure of such lamps.
  • the parameters of the mount assembly are the limiting factor dictating the lamp dimensions which in turn control the performance characteristics of the lamp. Such characteristics include coil temperature, wattage and light distribution.
  • lamps of this variety are of "single-ended" construction, in that only one end of the lamp is press-sealed about the lead-in filament wires and additional structure, if any (e.g.. molybdenum foil elements). The remaining, opposed end is typically sealed using a known tipping operation.
  • the bridge understandably adds to the cost of the lamp structure, in addition to being a potential source of contamination.
  • the added cost results from the labor and material required to produce the bridge assembly and effect location of the filament structure therein.
  • the contamination is attributed to moisture or other impurities entrapped in the bridge which is driven out under the high temperatures encountered during lamp operation.
  • the lamp filament structure is improved by eliminating the typical glass or quartz bridge.
  • a wire support is provided which is attached to one end of the filament coil(s).
  • the wire support extends in two directions from the point of attachment.
  • Each extension has sufficient length and flexibility to extend beyond the internal dimensions of the lamp envelope. Therefore, when initially assembled in such envelope, the supports extensions must be compressed and the lamp envelope slid over the compressed wire support attached to the filament, or vice versa.
  • the lamp filament support structure maintains its assembled position within the envelope through friction between the interior wall of the envelope and the compressed wire.
  • the lower portion of the lamp envelope is then press-sealed such that the ends of the wire support extensions, as well as the filament support leads. are embedded (e.g.. simultaneously, using known pressing equipment) in the pressed portion of the lamp envelope. This results in a fixed filament support and an improved shock-resistant lamp structure with lessened possibility for contamination.
  • all embodiments of the lamp 10 comprise a hermetically sealed.
  • light-transmitting envelope 12 of generally tubular (cylindrical) shape with a conventional (press-sealed) base portion 14.
  • a pair of molybdenum foil seals 16 disposed within the base serve to interconnect the input leads 18 to the filament body.
  • a high melting point material, such as quartz. is typically used for envelope 12, although other hard glasses may also be employed.
  • the hermetically sealed envelope 12 is usually filled with an inert gas, such as argon, nitrogen.
  • the lamp envelope is preferably of the bromine fill type.
  • the bromine fill may be provided in the form of a given mixture of hydrogen bromide.
  • any one of a number of different types of filament bodies may be incorporated into the lamp.
  • One basic type of filament body is described in connection with the invention.
  • FIG. 1 shows a tungsten filament 24 which is referred to in the art as a CC2V (coiled coil) filament including two individual tungsten filament coils 26 and 28. These coils 26 and 28 are secured to respective leads (legs) 27 and 29. respectively.
  • CC2V coil coil
  • a filament support structure comprises a wire 20 attached to the filament coils 26 and 28 at the intersection 30 between the two coils. As shown, the filaments are held by forming a loop 32 on wire 20 with the intersecting portion 30 passing therethrough. The base of the loop thus holds the filaments at intersection 30.
  • Wire 20 is formed of ductile material compatible with normal environment encountered in halogen lamp operation. Suitable materials include tungsten and molybdenum.
  • the wire support structure 20 extends in two directions by wire extensions 40 and 42 outwardly from loop portion 32.
  • the termination of each extension 40 and 42 is, as illustrated. embedded within the pressed portion 14 of lamp envelope 12 along with the foil seals 16 and input leads 18 during the conventional press sealing operation.
  • FIG. 2 shows a preferred method of assembling the support structure (shown generally at 60) into an open end of a length of glass tubing which eventually forms the lamp envelope 12 prior to exhausting and sealing thereof.
  • the extensions 40 and 42 of wire support 20 when not in compression, extend beyond (and are thus spaced farther apart than) the inner periphery of the envelope. Accordingly, to insert the support structure 60 within the envelope, the extensions must be compressed in the direction shown (by the arrows) as the envelope is slid over the support structure 60.
  • the resultant friction between the wire extensions 40 and 42 and the internal surfaces of the envelope walls enables the support structure to maintain a proper position such that the filaments 26 and 24 are suitably located for optimum lamp illumination.
  • the aforedescribed insertion occurs to the extent that both the filament support structure and filament are located a predetermined distance within the glass tubing.
  • predetermined is meant a distance such that the subsequent press-sealing of the tubing's open end will include encapsulation (containment) of the extreme ends of extensions 40 and 42 therein, in addition to the ends of the leads 27 and 29. Understandably, this four-point retention at this location assures positive securement of the filament in the desired position.
  • the final step in this process involves tipping the opposing (upper in FIG. 2) end of the tubing using a tipping operation well known in the art.
  • FIGS. 3-5 show various embodiments of such loops.
  • Each of these alternative embodiments comprises a lamp support structure 60 within a lamp envelope 12 having a pressed base portion 14 and having a pair of molybdenum foil seals 16 respectively affixed to filament leads 27 and 29, which in turn form part of or are connected to filament coils 26 and 28, respectively.
  • both filament coils are interconnected by the described intersection portion 30.
  • support wire 20' is similar to support wire 20 of FIG. 1 in that the filament is held or supported by the base of the loop 32'.
  • the loop 32' in this embodiment is rotated 180° upwardly (towards the tubulated end of the lamp envelope) to allow the loop to extend into and thus be securedly retained within the tubulated dome portion 70 of the lamp envelope 12.
  • This extension provides an additional point of filament support and therefore added shock or vibration resistance.
  • Dome portion 70 is formed as a result of the aforementioned, known tipping procedure.
  • FIG. 4 shows an oval shaped loop structure with a lower portion 32" which holds the filaments at the intersection 30 but includes an upper portion 33 shaped to fit into tubulated device 33 for additional shock resistance.
  • This embodiment thus combines both the advantageous features of the embodiments of FIGS. 1 and 2.
  • the loop 32 is substantially the same as that shown in FIGS. 1 and 2.
  • the portions (80) of wire 20 adjacent the loop are formed into substantially semicircular (arcuate) shapes which each conform (and engage) to the inner peripheral surface of the lamp envelope (as shown more clearly in FIG. 5A). This enables more lamp envelope internal wall surface to be used for filament positioning and retention for shock resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Resistance Heating (AREA)
EP85111055A 1984-09-04 1985-09-02 Brückenlose Wolframhalogenlampe Withdrawn EP0173995A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64728784A 1984-09-04 1984-09-04
US647287 1984-09-04

Publications (2)

Publication Number Publication Date
EP0173995A2 true EP0173995A2 (de) 1986-03-12
EP0173995A3 EP0173995A3 (de) 1988-10-12

Family

ID=24596352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111055A Withdrawn EP0173995A3 (de) 1984-09-04 1985-09-02 Brückenlose Wolframhalogenlampe

Country Status (3)

Country Link
EP (1) EP0173995A3 (de)
JP (1) JPS6166357A (de)
CA (1) CA1245704A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446459A2 (de) * 1990-03-15 1991-09-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig gequetschte Halogenglühlampe
EP0446460A2 (de) 1990-03-15 1991-09-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig gequetschte Halogenglühlampe
DE4106851A1 (de) * 1990-03-15 1991-09-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Einseitig gequetschte halogengluehlampe
US5146134A (en) * 1990-03-15 1992-09-08 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Halogen incandescent lamp, particularly for operation from power networks, and method of its manufacture
US5158709A (en) * 1990-02-01 1992-10-27 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Electric lamp containing molybdenum material doped wtih aluminum and potassium, molybdenum material for such a lamp, and method of its manufacture
US5367220A (en) * 1990-03-15 1994-11-22 Patent-Treuhand-Gesellschaft fur Elektrische Gluhiampen mbH Electric lamp with a holding frame for a lamp filament
WO1997032338A1 (en) * 1996-02-27 1997-09-04 Illumination Technology, Inc. Vacuum sealed incandescent lamp with filament support structure
EP0821399A2 (de) * 1996-07-24 1998-01-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig verschlossene elektrische Glühlampe
WO2004057646A2 (en) * 2002-12-20 2004-07-08 Koninklijke Philips Electronics N.V. Halogen incandescent lamp
WO2011000657A1 (de) * 2009-06-30 2011-01-06 Osram Gesellschaft mit beschränkter Haftung Halogenglühlampe
CN104616970A (zh) * 2015-01-06 2015-05-13 浙江新光阳照明股份有限公司 一种单端卤钨灯生产中的二步式掛丝方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006014643A1 (de) * 2006-03-29 2007-10-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe mit Halteelement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381868A (fr) * 1963-02-07 1964-12-14 Lampes Sa Perfectionnements aux lampes électriques
US3403280A (en) * 1966-03-04 1968-09-24 Gen Electric Single-ended electric incandescent lamp filament support
FR1563565A (de) * 1967-05-25 1969-04-11
US4208608A (en) * 1978-03-13 1980-06-17 General Electric Company Lamp mount structure
US4415833A (en) * 1981-09-29 1983-11-15 Gte Products Corporation Tungsten halogen lamp with coiled getter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381868A (fr) * 1963-02-07 1964-12-14 Lampes Sa Perfectionnements aux lampes électriques
US3403280A (en) * 1966-03-04 1968-09-24 Gen Electric Single-ended electric incandescent lamp filament support
FR1563565A (de) * 1967-05-25 1969-04-11
US4208608A (en) * 1978-03-13 1980-06-17 General Electric Company Lamp mount structure
US4415833A (en) * 1981-09-29 1983-11-15 Gte Products Corporation Tungsten halogen lamp with coiled getter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5158709A (en) * 1990-02-01 1992-10-27 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Electric lamp containing molybdenum material doped wtih aluminum and potassium, molybdenum material for such a lamp, and method of its manufacture
EP0446459A2 (de) * 1990-03-15 1991-09-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig gequetschte Halogenglühlampe
EP0446460A2 (de) 1990-03-15 1991-09-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig gequetschte Halogenglühlampe
DE4106851A1 (de) * 1990-03-15 1991-09-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Einseitig gequetschte halogengluehlampe
EP0446459A3 (en) * 1990-03-15 1992-02-19 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp having a single pinch
EP0446460A3 (en) * 1990-03-15 1992-02-26 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Halogen incandescent lamp having a single pinch
US5146134A (en) * 1990-03-15 1992-09-08 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Halogen incandescent lamp, particularly for operation from power networks, and method of its manufacture
US5367220A (en) * 1990-03-15 1994-11-22 Patent-Treuhand-Gesellschaft fur Elektrische Gluhiampen mbH Electric lamp with a holding frame for a lamp filament
WO1997032338A1 (en) * 1996-02-27 1997-09-04 Illumination Technology, Inc. Vacuum sealed incandescent lamp with filament support structure
EP0821399A2 (de) * 1996-07-24 1998-01-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig verschlossene elektrische Glühlampe
EP0821399A3 (de) * 1996-07-24 1999-05-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig verschlossene elektrische Glühlampe
WO2004057646A2 (en) * 2002-12-20 2004-07-08 Koninklijke Philips Electronics N.V. Halogen incandescent lamp
WO2004057646A3 (en) * 2002-12-20 2004-09-02 Koninkl Philips Electronics Nv Halogen incandescent lamp
US7391146B2 (en) 2002-12-20 2008-06-24 Koninklijke Philips Electronics N.V. Halogen incandescent lamp
WO2011000657A1 (de) * 2009-06-30 2011-01-06 Osram Gesellschaft mit beschränkter Haftung Halogenglühlampe
CN104616970A (zh) * 2015-01-06 2015-05-13 浙江新光阳照明股份有限公司 一种单端卤钨灯生产中的二步式掛丝方法

Also Published As

Publication number Publication date
EP0173995A3 (de) 1988-10-12
CA1245704A (en) 1988-11-29
JPS6166357A (ja) 1986-04-05

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Inventor name: POWERS, WARD H.

Inventor name: WESTLUND, ARNOLD E., JR.

Inventor name: BUSCHMANN, JEFFREY P.