US3675070A - Tubular incandescent lamp - Google Patents

Tubular incandescent lamp Download PDF

Info

Publication number
US3675070A
US3675070A US76773A US3675070DA US3675070A US 3675070 A US3675070 A US 3675070A US 76773 A US76773 A US 76773A US 3675070D A US3675070D A US 3675070DA US 3675070 A US3675070 A US 3675070A
Authority
US
United States
Prior art keywords
envelope
lamp
incandescent
tube
incandescent body
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
US76773A
Other languages
English (en)
Inventor
Evgeny Fedorovich Prytkov
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3675070A publication Critical patent/US3675070A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 A tubular incandescent lamp adapted to be mounted for operation in positions other than horizontal comprising a transparent envelope receiving thereinside a single-spiral incandescent body rigidly connected with a pair of electric leads sealingly secured in said envelope, and at least one holder supporting the incandescent body inside said envelope; the lamp being additionally provided with at least one auxiliary support means including a tube welded to the inner surface said envelope, and with the tube receiving therein a portion of an adjacent one of a holder supporting the incandescent body.
  • the present invention relates to tubular incandescent lamps adapted to be mounted for operation in positions other than horizontal, including a position when the single-spiral incandescent body of the lamp extends vertically, the lamp being also adapted to withstand vibratory and shock loads.
  • vibration-proof incandescent tubular lamps each comprising a transparent envelope having therein a single-spiral incandescent body rigidly connected to a pair of leads sealingly secured in the envelope, and a plurality of discshaped holders supporting the incandescent body in the envelope.
  • the internal surface of the envelope is made so as to include a longitudinally extending rib, this rib being produced during the process of the manufacture of the tubular envelope, and with the disc holders being provided with indentations complementary to the cross-sec-' tional shape of the rib.
  • tubular incandescent lamp comprising a transparent envelope having therein a single-spiral incandescent body rigidly connected with a pair of electric leads which are sealingly secured in the envelope, and a plurality of disc-shaped holders supporting the incandescent body within the envelope.
  • the holders are built into the sidewall of the envelope from two diametrically opposed sides, whereby indented areas are formed in the respective portions of the external surface of the envelope.
  • the main object of the present invention is to provide a tubular incandescent lamp with a single-spiral incandescence body, which is capable of withstanding relatively great external mechanical loads and which should be adapted to be mounted for operation in positions other than substantially horizontal, in view of the modified structure and securing of the holders supporting the incandescent body in the envelope of the lamp.
  • a tubular incandescent lamp comprising a transparent envelope having therein a single-spiral incandescent body which is rigidly connected with at least a pair of leads sealingly secured in the envelope, and plurality of wire holders for supporting the incandescent body within the envelope, and wherein, in accordance at least one additional support means including a tube welded to the inner wall surface of the envelope, the tube having fastened thereto a portion of an adjacent one of the plurality of holders supporting the incandescent body.
  • the tube prefferably be introduced into the envelope through the exhaust portion thereof and to weld the tube thereto, whereby enabling the tube to support and retain the holder for supporting the incandescent body.
  • the herein disclosed structure of the lamp provides for an increased reliability in the performance thereof when it is mounted for operation in a position other than substantially horizontal, including positions when the single-spiral incandescent body extends vertically, and also when subjected to the influence of external mechanical loads, with this increased reliability being due to the additional linking of the incandescent body with the tubular envelope.
  • the hereinafter disclosed configuration and structure of the holder supporting the incandescent body provides for the comparatively easily performed connection thereof with the additional support means retaining the holder with reference to the envelope.
  • the structure of the herein disclosed lamp makes it possible to employ the lamp in a variety of optical and illumination systems, since there is practically no distortion of the light flux produced by the lamp, whereby the lamp can be used for a number of important applications, e.g. in the shooting of cinema and TV films.
  • the present invention may also be embodied in lamps which are to be used in installations and under conditions, where the presence of vibratory and external shock loads prohibits the employment of lamps of the presently known prior art types.
  • the lamp com prises a generally tubular glass envelope or bulb 1 having an inner surface la, and opposite end portions 2 through which the respectively two metal foil leads extend in a sealed relationship.
  • Extending along the longitudinal axis of the glass envelope 1 is a single-spiral incandescent body 4 supported centrally thereof by a plurality of wire holders 5, each wire holder 5 being shaped as a ring having the external portion thereof extending contiguously with the internal surface of the envelope 1, and with the diameter of the ring being smaller than the intemal diameter la of the envelope 1.
  • each wire 6 including a pair of eoaxially wound cylindrical members, with each member being formed by a plurality of coils of tungsten wire, and with the two cylindrical members having different diameters.
  • the smaller diameter cylindrical member of the wire 6 has the same winding pitch as the incandescent body 4, and is threaded or screwed onto the respective end portion of the incandescent body, while the larger diameter cylindrical member of the wire 6 adjoins the internal surface la of the glass envelope 1.
  • the smaller diameter cylindrical member of the wire 6 is formed integral with a longitudinal extension of which the external or free end is welded or soldered to a respective metal foil lead 3.
  • the lamp envelope is provided with secured, is an electrode 7 which is connected to a contactmaking socket part 8 of a structure 9 for contacting the respective ceramic end base of the lamp.
  • the contact-making socket part 8 has a firm electric contact with the electrode 7 and is firmly secured in the ceramic end base structure 9, without requiring the use of any basesecuring composition.
  • a predetermined quantity of metal is applied into the structure 9, e.g. such as copper-phosphorous alloy or silver solder, whereafter this amount is heated up to its melting point, and the electrode 7 is immersed into the molten metalso as to wet the electrode.
  • the molten metal is then cooled down so as to solidify, it forms the contact-making socket part 8 onto which the structure 9 of the ceramic end base is secured.
  • the contact-making socket part 8 is adapted to form an electrical contact with the supply mains (not shown). Disposed adjacent to the portion 10 of one of the holders and snugly receiving this portion therein is a tubular piece 11 which is welded integrally with the exhaust spout of the envelope l.
  • the envelope 1 of the herein disclosed lamp which is provided with this branch piece in the form of the tube 11 which is welded to the envelope body and receives the portion 10 of the holder 5, so as to hold the latter rigidly and reliably secured within the lamp and in a desired position.
  • the internal diameter of the tube 11 being somewhat greater than the diameter of the wire from which the holder 5 is made, the portion 10 of the latter can be introduced into the tube 11 without requiring any excessive assembling effort.
  • the portion 10 of the holder 5 is elbow-shaped, so as to prevent direct contact of the tube 11 with the incandescent body 4, lest the latter may be glazed and possibly destroyed in the operation of the lampv
  • the tube 11 prevents deformation of the incandescent body 4, and appreciably reduces bending and curving of this body under the influence of its own weight and external mechanical load, since the holder 5 by having its end portion 10 firmly connected with the envelope 1 with the aid of the tube 11 will not change its initial position.
  • a tubular incandescent lamp comprising:
  • a transparent envelope having rigidly attached thereto at least a pair of electric leads sealingly secured in said envelope; a singlespiral incandescent body extending axially and centrally within said envelope and rigidly connected with said electric leads; at least one additional support means including a radially inwardly extending tube welded to the inner surface of said envelope; a holder encompassing said incandescent body within said envelope; said holder having a projecting portion fastened within said tube.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
US76773A 1970-09-29 1970-09-30 Tubular incandescent lamp Expired - Lifetime US3675070A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB4620470 1970-09-29
US7677370A 1970-09-30 1970-09-30
NL7014342A NL7014342A (fr) 1970-09-29 1970-09-30
DE19702049001 DE2049001A1 (fr) 1970-09-29 1970-10-06
FR7038764A FR2110705A5 (fr) 1970-09-29 1970-10-27

Publications (1)

Publication Number Publication Date
US3675070A true US3675070A (en) 1972-07-04

Family

ID=27510126

Family Applications (1)

Application Number Title Priority Date Filing Date
US76773A Expired - Lifetime US3675070A (en) 1970-09-29 1970-09-30 Tubular incandescent lamp

Country Status (5)

Country Link
US (1) US3675070A (fr)
DE (1) DE2049001A1 (fr)
FR (1) FR2110705A5 (fr)
GB (1) GB1288206A (fr)
NL (1) NL7014342A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469801A1 (fr) * 1979-11-09 1981-05-22 Philips Nv Lampe electrique a incandescence a bouchon de contact inclus dans un culot isolant
US4551617A (en) * 1983-06-15 1985-11-05 Thorn Emi Domestic Appliances Limited Heating apparatus
US4839559A (en) * 1988-02-22 1989-06-13 General Electric Company Radiant energy incandescent lamp

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB946149A (en) * 1961-07-03 1964-01-08 Gen Electric Co Ltd Improvements in or relating to electric lamps
GB948859A (en) * 1962-04-26 1964-02-05 Thorn Electrical Ind Ltd Improvements in and relating to incandescent lamps
GB960149A (en) * 1962-04-19 1964-06-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh An electric incandescent lamp
US3335312A (en) * 1965-01-25 1967-08-08 Gen Electric Filament support for tubular incandescent lamps
FR1527882A (fr) * 1966-03-16 1968-06-07 Philips Nv Lampe à incandescence
US3390299A (en) * 1965-11-08 1968-06-25 Gen Electric Filament supports for tubular incandescent lamps
CA827274A (en) * 1969-11-11 Sylvania Electric Products Projector lamp
US3496402A (en) * 1968-02-09 1970-02-17 Westinghouse Electric Corp Tubular incandescent lamp having interlocked filament support member and envelope

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA827274A (en) * 1969-11-11 Sylvania Electric Products Projector lamp
GB946149A (en) * 1961-07-03 1964-01-08 Gen Electric Co Ltd Improvements in or relating to electric lamps
GB960149A (en) * 1962-04-19 1964-06-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh An electric incandescent lamp
GB948859A (en) * 1962-04-26 1964-02-05 Thorn Electrical Ind Ltd Improvements in and relating to incandescent lamps
US3335312A (en) * 1965-01-25 1967-08-08 Gen Electric Filament support for tubular incandescent lamps
US3390299A (en) * 1965-11-08 1968-06-25 Gen Electric Filament supports for tubular incandescent lamps
FR1527882A (fr) * 1966-03-16 1968-06-07 Philips Nv Lampe à incandescence
US3496402A (en) * 1968-02-09 1970-02-17 Westinghouse Electric Corp Tubular incandescent lamp having interlocked filament support member and envelope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469801A1 (fr) * 1979-11-09 1981-05-22 Philips Nv Lampe electrique a incandescence a bouchon de contact inclus dans un culot isolant
US4551617A (en) * 1983-06-15 1985-11-05 Thorn Emi Domestic Appliances Limited Heating apparatus
US4839559A (en) * 1988-02-22 1989-06-13 General Electric Company Radiant energy incandescent lamp

Also Published As

Publication number Publication date
NL7014342A (fr) 1972-04-05
FR2110705A5 (fr) 1972-06-02
GB1288206A (fr) 1972-09-06
DE2049001A1 (fr) 1972-04-13

Similar Documents

Publication Publication Date Title
US3882346A (en) Ceramic arc tube mounting structure
HU210889B (en) Double ended high pressure discharge lamp
US4070594A (en) Light source device to be utilized mainly for projection purposes
CA1093624A (fr) Lampe electrique a decharge dans un gaz, a enceinte tubulaire munie d'une fiche en ceramique
US3496403A (en) Single-ended electric incandescent lamp and mount assembly therefor
US3675070A (en) Tubular incandescent lamp
US4415833A (en) Tungsten halogen lamp with coiled getter
US4376905A (en) Electric lamp provided with a ceramic discharge tube
US5019743A (en) Mount structure for double ended lamp
JP2569227B2 (ja) 両側を封着されたハロゲンランプ
US4605877A (en) Mounting structure for multi-filaments of an incandescent lamp
JP2004502278A (ja) 押圧封止部内で緊締されたフィラメント脚部を有するハロゲン白熱ランプ
US5457354A (en) Lamp with improved mount for light-source capsule
US6472818B1 (en) Light bulb
EP1102309B1 (fr) Lampe incandescente
US4384235A (en) Linear filament assembly with refractory insulating support rod for halogen lamp
US2877375A (en) Incandescent lamp mount structure
US3780333A (en) Lamp filament support means
US3265922A (en) Electric lamp
US4367428A (en) Halogen incandescent lamp
US2966600A (en) Electric lamp mount
US4415830A (en) Inlead construction for electric lamp
US3249798A (en) Fuse in lead-in of incandescent lamp filament
US2434757A (en) Double-ended electric incandescent lamp
JPS5871554A (ja) 放電ランプ