US3678319A - Filament support for tubular lamp - Google Patents

Filament support for tubular lamp Download PDF

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Publication number
US3678319A
US3678319A US175866A US3678319DA US3678319A US 3678319 A US3678319 A US 3678319A US 175866 A US175866 A US 175866A US 3678319D A US3678319D A US 3678319DA US 3678319 A US3678319 A US 3678319A
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US
United States
Prior art keywords
filament
envelope
wire
windings
turn
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.)
Expired - Lifetime
Application number
US175866A
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English (en)
Inventor
Victor Rosallie Notelteirs
Eduard Josef Philomena Janssen
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.)
US Philips Corp
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US Philips 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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3678319A publication Critical patent/US3678319A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp

Definitions

  • ABSTRACT The invention relates to an electric filament lamp having a tu- [301 Foreign Application Priority Data bular envelope, in which a coiled coil filament is stretched. Sept. 3, 1970 Netherlands ..7013031 filament Suppmed by a supp a 1" which encloses a part of one turn of the filament, the inner [52] U.S.Cl.
  • the invention relates to an electric filament lamp comprising a tubular lamp envelope which is sealed at its ends by means of pinches and comprises a helically wound filament extending in the longitudinal direction of the lamp envelope, said filament being secured with its ends in the pinches of the envelope and being supported by a metal supporting wire in at least one place between the pinches of the envelope, the turns of said filament being each constituted by a number of helically extending wire windings, a part of the supporting wire cooperating with wire windings which occur in a part of only one turn of the filament.
  • a filament lamp is known.
  • either the end of the supporting wire comprises a hook bent around a turn of the filament, or a part of the supporting wire is bent to form a loop which is closed around a turn of the filament.
  • the drawback in these constructions is that the filament around the hook and the loop, respectively, can tilt in a plane perpendicular to the axis of the envelope so that the filament no longer extends centrally in the envelope.
  • an electric filament lamp according to the invention is characterized in that the supporting wire surrounds the wire windings occurring in apart of one turn of the filament with a coiled part the inner diameter of which is at most 1.5 times the outer diameter of the wire windings, and
  • a known filament comprises for that purpose a support manufactured from a piece of wire and the coiled part of which is slid around a few turns of the filament.
  • a drawback in this 1 construction is that the support locally screens the filament and as a result inhibits the light radiation.
  • An electric filament lamp according to the invention in which the direction of winding of the coiled part of the support is equal to that of the winding occurring in the turn of the filament is characterized in that the pitch of the coiled part is smaller than the pitch of the windings enclosed by said part. It is achieved by this measure that the enclosed part of the turn of the filament remains within the coiled part of the support.
  • the part of the support remote from the filament may of course be secured to the envelope in various manners.
  • This part may be secured, for example, in one of the pinches and the central part of the wire support may also be coiled and enclose a part of a turn of the filament, while the ends of the wire support are each secured in one of the pinches of the envelope.
  • the part of the wire support remote from the filament may 7 furthermore engage the inner wall of the envelope and be fixed in the axial direction by recesses provided locally in said inner wall.
  • the end of the support remote from the filament is bent to form a barb which hooks behind the edge of an aperture in the wall of the envelope, into which aperture the sealed exhaust tube opens which projects laterally from the envelope, the inside diameter of said exhaust tube being larger than the diameter of the aperture.
  • FIG. 1 shows a filament lamp according to the invention in which the part of the wire support remote from the filament is secured in an aperture in the wall of the envelope at the area of the tiEped-ofi art of the exhaust tube;
  • FIG. shows t e part of the wire support which encloses a part of a turn of the filament
  • FIG. 3 shows the embodiment according to the invention in which the wire support is secured in the pinches of the envelope.
  • the filament lamp shown in FIG. 1 comprises an envelope 18 in which the filament 12 extends coaxially and the ends of which envelope are sealed by means of pinch seals 13.
  • the filament 12 is secured in the pinches 13 by means of foils 14.
  • the filament 12 is supported by a support 11 of which the end remote from the filament comprises a barbed hook 16 which is threaded through an aperture 8 in the wall of the envelope and hooks behind the edge 7 of the aperture 8.
  • the sealed exhaust tube 17 has a larger inner diameter than the aperture 8.
  • FIG. 2 shows a turn 9 of the filament 12 which turn itself consists of a number of windings 15 of a wire which may be a coiled coil wire.
  • the part a of the turn 9 is surrounded by the coiled part 10 of the wire support ll.
  • the inner diameter b of said coiled part 10 is maximum 1.5 times the diameter of the winding 15 of the enclosed part of the turn 9.
  • the length a of the coiled part 10 is minimum 1.5 times the diameter of the winding 15.
  • the filament 12 which extends coaxially in the envelope is supported in the center by the wire support 19 in the manner as was described with reference to FIG. 1.
  • the parts 20 of the wire support 19 extend from the center of the envelope 18 in the direction of the pinches 13 in which the ends of the support 19 are secured by means of foils 21.
  • the filament 12 will extend coaxially in the envelope.
  • An electric filament lamp comprising a tubular envelope which is sealed at its ends by means of pinches and comprises a helically wound filament extending in the longitudinal direction of the envelope, said filament being secured with its ends in the pinches of the envelope and being supported by a metal supporting wire in at least one place between the pinches of the envelope, the turns of said fila-ment being each constituted by a number of helically extending wire windings, a part of the supporting wire cooperating with wire windings which occur in a part of only one turn of the filament, characterized in that the Supporting wire surrounds the wire windings occuring in a part of one turn of the filament with a coiled part the inner diameter of which is at most 1.5 times the outer diameter of the wire windings, and the longitudinal dimension of which is minimum 1.5 times said outer diameter.

Landscapes

  • Resistance Heating (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US175866A 1970-09-03 1971-08-30 Filament support for tubular lamp Expired - Lifetime US3678319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7013031.A NL160679C (nl) 1970-09-03 1970-09-03 Elektrische gloeilamp.

Publications (1)

Publication Number Publication Date
US3678319A true US3678319A (en) 1972-07-18

Family

ID=19810944

Family Applications (1)

Application Number Title Priority Date Filing Date
US175866A Expired - Lifetime US3678319A (en) 1970-09-03 1971-08-30 Filament support for tubular lamp

Country Status (8)

Country Link
US (1) US3678319A (de)
JP (1) JPS541112B1 (de)
BE (1) BE772071A (de)
CA (1) CA934429A (de)
DE (1) DE2141483C3 (de)
FR (1) FR2107250A5 (de)
GB (1) GB1334781A (de)
NL (1) NL160679C (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359665A (en) * 1980-07-02 1982-11-16 Gte Products Corporation Filament support for tubular lamp
US4442374A (en) * 1982-03-25 1984-04-10 Gte Products Corporation Dual length copier lamp
US5404069A (en) * 1992-03-27 1995-04-04 General Electric Company Filament support for incandescent lamps
US7012369B2 (en) * 2001-10-23 2006-03-14 Koninklijke Philips Electronics N.V. System for attaching a filament to a current lead-in
US20080050104A1 (en) * 2006-08-24 2008-02-28 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US20080056693A1 (en) * 2006-08-29 2008-03-06 Star Progetti Tecnologie Applicate Spa Infrared heat irradiating device
US20080298787A1 (en) * 2007-05-29 2008-12-04 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US20100021147A1 (en) * 2008-07-28 2010-01-28 Ushio Denki Kabushiki Kaisha Filament lamp
US20140355971A1 (en) * 2013-05-30 2014-12-04 Osram Sylvania Inc. Infrared Heat Lamp Assembly
CN109786208A (zh) * 2018-11-20 2019-05-21 保定来福汽车照明集团有限公司 一种导丝搓合装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168670A (en) * 1961-03-23 1965-02-02 Gen Electric Filament supports for electric incandescent lamps
US3194999A (en) * 1963-10-28 1965-07-13 Gen Electric Filament support for tubular lamps
US3295007A (en) * 1964-06-25 1966-12-27 Gen Electric Differential output tubular incandescent lamp
US3390299A (en) * 1965-11-08 1968-06-25 Gen Electric Filament supports for tubular incandescent lamps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168670A (en) * 1961-03-23 1965-02-02 Gen Electric Filament supports for electric incandescent lamps
US3194999A (en) * 1963-10-28 1965-07-13 Gen Electric Filament support for tubular lamps
US3295007A (en) * 1964-06-25 1966-12-27 Gen Electric Differential output tubular incandescent lamp
US3390299A (en) * 1965-11-08 1968-06-25 Gen Electric Filament supports for tubular incandescent lamps

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359665A (en) * 1980-07-02 1982-11-16 Gte Products Corporation Filament support for tubular lamp
US4442374A (en) * 1982-03-25 1984-04-10 Gte Products Corporation Dual length copier lamp
US5404069A (en) * 1992-03-27 1995-04-04 General Electric Company Filament support for incandescent lamps
US7012369B2 (en) * 2001-10-23 2006-03-14 Koninklijke Philips Electronics N.V. System for attaching a filament to a current lead-in
US20080050104A1 (en) * 2006-08-24 2008-02-28 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US7639930B2 (en) * 2006-08-24 2009-12-29 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US20080056693A1 (en) * 2006-08-29 2008-03-06 Star Progetti Tecnologie Applicate Spa Infrared heat irradiating device
US7764871B2 (en) * 2006-08-29 2010-07-27 Star Progetti Tecnologie Applicate Infrared heat irradiating device
US8014652B2 (en) * 2007-05-29 2011-09-06 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US20080298787A1 (en) * 2007-05-29 2008-12-04 Ushiodenki Kabushiki Kaisha Filament lamp and light-irradiation-type heat treatment device
US20100021147A1 (en) * 2008-07-28 2010-01-28 Ushio Denki Kabushiki Kaisha Filament lamp
US8488953B2 (en) * 2008-07-28 2013-07-16 Ushio Denki Kabushiki Kaisha Filament lamp
US20140355971A1 (en) * 2013-05-30 2014-12-04 Osram Sylvania Inc. Infrared Heat Lamp Assembly
US10264629B2 (en) * 2013-05-30 2019-04-16 Osram Sylvania Inc. Infrared heat lamp assembly
CN109786208A (zh) * 2018-11-20 2019-05-21 保定来福汽车照明集团有限公司 一种导丝搓合装置
CN109786208B (zh) * 2018-11-20 2024-01-19 保定来福汽车照明集团有限公司 一种导丝搓合装置

Also Published As

Publication number Publication date
DE2141483B2 (de) 1978-05-03
CA934429A (en) 1973-09-25
FR2107250A5 (de) 1972-05-05
BE772071A (fr) 1972-03-01
NL7013031A (de) 1972-03-07
JPS541112B1 (de) 1979-01-20
NL160679C (nl) 1979-11-15
DE2141483A1 (de) 1972-03-09
NL160679B (nl) 1979-06-15
GB1334781A (en) 1973-10-24
DE2141483C3 (de) 1979-01-04

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