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WO2007113710A1 - Lampe incandescente avec soutien de filament - Google Patents

Lampe incandescente avec soutien de filament Download PDF

Info

Publication number
WO2007113710A1
WO2007113710A1 PCT/IB2007/050938 IB2007050938W WO2007113710A1 WO 2007113710 A1 WO2007113710 A1 WO 2007113710A1 IB 2007050938 W IB2007050938 W IB 2007050938W WO 2007113710 A1 WO2007113710 A1 WO 2007113710A1
Authority
WO
WIPO (PCT)
Prior art keywords
filament
lamp
support
wall
incandescent 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.)
Ceased
Application number
PCT/IB2007/050938
Other languages
English (en)
Inventor
Walterus J. M. Dekkers
Martinus J. Piena
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2007113710A1 publication Critical patent/WO2007113710A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/20—Mountings or supports for the incandescent body characterised by the material thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp

Definitions

  • the invention relates to an incandescent lamp comprising a light-transmissive lamp envelope, said lamp envelope having a wall enclosing a filament chamber in which a filament is arranged, said filament being supported within said envelope by means of at least one filament support.
  • a lamp is known from US-5,404,069.
  • Filament sag is a serious problem in incandescent lamps. During lifetime, the sag may develop to such an extent that the filament touches the wall of the vitreous lamp envelope and thus increases the risk of fracture/explosion of the lamp.
  • various filament support constructions have been designed in the past. In the known lamp, each single filament support is constructed by a refractory metal support wire extending from the filament to the wall.
  • US-5,565,734 discloses a halogen incandescent lamp in which the filament is supported via local constrictions of the wall of the lamp envelope. The wall thereby clamps the filament and thus keeps it in a fixed position.
  • the lamp disclosed in US-5,565,734 has the features that the wall needs to be deformed significantly and that said wall is exposed to a comparatively high temperature of the filament. Both features increase the risk of crystallization of the vitreous wall and hence of premature failure of the lamp due to fracture of the lamp vessel as a result of said crystallization.
  • the operation of securing the filament support to the wall is realized by first cutting the filament support to a length that is practically the same as the inner diameter D 1 of the filament chamber transverse to the optical axis 18 of the lamp. Subsequently, the filament support is inserted and positioned in the filament chamber in such a way that the two free ends of the filament support practically touch the wall, followed by softening the glass of the free ends by means of a pair of focused lasers.
  • the filament supports keep the filament positioned on the central, optical axis 18, to which axis 18 infrared radiation originating from the light source is reflected back by the coating.

Landscapes

  • Resistance Heating (AREA)

Abstract

La présente invention concerne une lampe incandescente (1) comprenant une enveloppe de lampe transmettant la lumière (2), ladite enveloppe ayant une paroi (3) englobant une chambre de filament (6) dans laquelle un filament (7) est agencé, le filament étant soutenu dans l'enveloppe au moyen d'au moins un soutien de filament (10). La lampe est caractérisée en ce qu'au moins un soutien de filament est composé d'un matériau vitreux et se prolonge du filament à la paroi de la chambre de filament dans une direction transversale au filament.
PCT/IB2007/050938 2006-03-30 2007-03-19 Lampe incandescente avec soutien de filament Ceased WO2007113710A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06112028 2006-03-30
EP06112028.3 2006-03-30

Publications (1)

Publication Number Publication Date
WO2007113710A1 true WO2007113710A1 (fr) 2007-10-11

Family

ID=38229972

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/050938 Ceased WO2007113710A1 (fr) 2006-03-30 2007-03-19 Lampe incandescente avec soutien de filament

Country Status (1)

Country Link
WO (1) WO2007113710A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015048173A2 (fr) 2013-09-24 2015-04-02 The Regents Of The University Of California Capteurs et systèmes de capteurs encapsulés pour biodosages et diagnostics et leurs procédés de fabrication et d'utilisation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR11225E (fr) * 1907-07-13 1909-12-29 Eme Auer) Procédé de fabrication des lampes électriques à incandescence
US3930178A (en) * 1973-07-10 1975-12-30 Thorn Electrical Ind Ltd Electrical incandescent filament devices
JPS6477867A (en) * 1987-09-18 1989-03-23 Ushio Electric Inc Manufacture of glass luminous tube
EP0364831A2 (fr) * 1988-10-17 1990-04-25 General Electric Company Lampe électrique à incandescence et méthode de fabrication de cette lampe
US5404069A (en) * 1992-03-27 1995-04-04 General Electric Company Filament support for incandescent lamps
US5565734A (en) * 1993-03-19 1996-10-15 U.S. Philips Corporation Electric incandescent lamp having filament sleeves engaged by envelope constrictions supporting the filament
GB2300297A (en) * 1995-04-25 1996-10-30 Gen Electric Linear filament lamps
EP0758142A2 (fr) * 1995-08-03 1997-02-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence halogène

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR11225E (fr) * 1907-07-13 1909-12-29 Eme Auer) Procédé de fabrication des lampes électriques à incandescence
US3930178A (en) * 1973-07-10 1975-12-30 Thorn Electrical Ind Ltd Electrical incandescent filament devices
JPS6477867A (en) * 1987-09-18 1989-03-23 Ushio Electric Inc Manufacture of glass luminous tube
EP0364831A2 (fr) * 1988-10-17 1990-04-25 General Electric Company Lampe électrique à incandescence et méthode de fabrication de cette lampe
US5404069A (en) * 1992-03-27 1995-04-04 General Electric Company Filament support for incandescent lamps
US5565734A (en) * 1993-03-19 1996-10-15 U.S. Philips Corporation Electric incandescent lamp having filament sleeves engaged by envelope constrictions supporting the filament
GB2300297A (en) * 1995-04-25 1996-10-30 Gen Electric Linear filament lamps
EP0758142A2 (fr) * 1995-08-03 1997-02-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence halogène

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"IR LAMP MODIFIED FOR VERTICAL BURN", IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 29, no. 4, 1 September 1986 (1986-09-01), pages 1552 - 1554, XP002118110, ISSN: 0018-8689 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015048173A2 (fr) 2013-09-24 2015-04-02 The Regents Of The University Of California Capteurs et systèmes de capteurs encapsulés pour biodosages et diagnostics et leurs procédés de fabrication et d'utilisation

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