US2087745A - Lamp unit - Google Patents

Lamp unit Download PDF

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Publication number
US2087745A
US2087745A US101823A US10182336A US2087745A US 2087745 A US2087745 A US 2087745A US 101823 A US101823 A US 101823A US 10182336 A US10182336 A US 10182336A US 2087745 A US2087745 A US 2087745A
Authority
US
United States
Prior art keywords
container
conservator
spring
lamp unit
envelope
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
US101823A
Other languages
English (en)
Inventor
Verburg Cornelis
Uyterhoeven Willem
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2087745A publication Critical patent/US2087745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers

Definitions

  • the object of the present inven ion is to provide a simple, inexpensive means or supporting the U-shaped lamp container in the heat conservator of lamp units oi the above type.
  • Another object of the invention is to provide a supporting means which is easily mounted in the lamp unit during the manufacture thereof.
  • the invention attains its objects by using a resilient, helically coiled spring clamped between the legsof the U-shaped container and pressing against the inner surface of the-heat conservator.
  • the spring does not press directly against the walls of the envelope; a cylindrical glass ballle interposed between the -coi'itainer and the envelope is used as a support for said spring,
  • Fig. 1 is a front elevational, partly sectional" view-01a gaseous electric discharge lamp unit embodying'the invention
  • Fig. 2 is a side elevational, partly sectional view of thedevice shown in Fig. 1.
  • Like numbers denote like partsinboththe ilgures.
  • the gaseous electric discharge lamp device comprises a, U-shape, tubular 3 container I having an electrode I mounted adjacent the end oi each of its legs and having a gaseous 'atnio'spheretherein comprising a starting gas, such'as argon, neon, xenon, or a mixture of such-gases, at a pressure of approximately 1 to 10' mm.- and the vapor of adiflicultly vaporizable material, such' as sodium.
  • a starting gas such'as argon, neon, xenon, or a mixture of such-gases
  • the electrodes- 2 areelectronl emitting when heated and consist of a metal filament,'su ch as a tungsten filament, bent doubleand coiled helically, and a coating, of material having high electron emissivity characteristies, such .as barium oxide, on said fila- 0
  • Eachoi theele'ctrodes' 2 is mounted on a pair of current leads sealed into the external pinch 3 of said container I which are connected outside .the container l to a single current lead 4.
  • Said 15 current-leads I are sealed into the pinch part 5 of the envelope 6.
  • Said container I is thus suspended insaidenvelope 6 by.
  • the envelope'i is evacuated and is providedwith a base I having twoTseparate electrical contacts 20 container is larger than the distanceB between 30 saidlegs.
  • a helically,; ico'ile'd, resilient spring 9 having a straight a ris 'i'sinserted in said circular openingand presses'againstthe side of said opening. The likewise presses against the in-v ner .wrsee or. the baiiie a to hold the lower part as of said 'contaner" I' flrmly fin fposition centrally in said envelope 8" and awayfrom the baboard 8.
  • the spring 9 is greater in length than the diameter of the bane I and is inserted in its position between the legs of the container I before said container Iis introduced into the envelope 6 during the assembling of the lamp device.
  • the spring is compressed longitudinally and. is thus caused to-expand radially so that it presses against the curved part of the container I as .well as against the'baflie 8. Since the circular. 50
  • openingA is'greateriin diameter than the disstructure described aboveis a simple one and the container I is prevented from moving with respect to the envelope 6 during the use and the transportation of the lamp device by a positive acting, resilient support means.
  • the adjacent parts of the container legs are at a higher temperature than the remote parts thereof, due to the mutual heating thereof.
  • the mounting of the spring 9 between the legs of the container is, therefore, advantageous since the heat conducted away from said container I by said spring 9 has no effect on the vapor pressure in said container I.
  • the spring 9 may reduce the temperature of the parts of the container I contiguous therewith below the condensation temperature of the metal vapor the structure described is still advantageous since the light obstructing deposits of condensed material form on the inner sides of the container I rather than the sidesthereof facing the envelope 6.
  • the spring 9, due to its small size and its position between the legs of the envelope 6, intercepts a minimum of light.
  • container I comprises three or four parallel legs and the spring 9 is used in a like manner with like advantages when desired, and when desired, another spring similar to spring 9 is mounted ad- Jacent the ends of the container I in a similar manner.
  • a lamp unit comprising in combination a heat conservator, a gaseous electric discharge lamp device having a U-shaped container mounted in said heat conservator, and a resilient means interposed between'the legs of said container and pressing against the walls of said conservator to support said container centrally in said conservator and away from the walls thereof.
  • a lamp unit comprising in combination a heat conservator, a gaseous electric discharge lamp device having a U-shaped container mounted in said heat conservator, and a resilient means interposed between the legs of said container at the curved part thereof and pressing against the walls of said conservator to support said container centrally in said conservator and away from the walls thereof.
  • a lamp unit comprising in combination a heat conservator, a gaseous electric discharge lamp device having a U-shaped container mounted in said heat conservator, and a resilient means interposed between and clamped by the legs of said container and pressing against the walls of said conservator to support said container centrally in said conservator and away from the walls thereof.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Toys (AREA)
US101823A 1935-09-23 1936-09-21 Lamp unit Expired - Lifetime US2087745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN38644D DE649006C (de) 1935-09-23 1935-09-23 Von einer evakuierten Huelle umgebene, Dampf enthaltende Endladungsroehre, insbesondere zum Aussenden von Lichtstrahlen

Publications (1)

Publication Number Publication Date
US2087745A true US2087745A (en) 1937-07-20

Family

ID=6539294

Family Applications (1)

Application Number Title Priority Date Filing Date
US101823A Expired - Lifetime US2087745A (en) 1935-09-23 1936-09-21 Lamp unit

Country Status (6)

Country Link
US (1) US2087745A (en(2012))
BE (1) BE417554A (en(2012))
DE (1) DE649006C (en(2012))
FR (1) FR810701A (en(2012))
GB (1) GB457266A (en(2012))
NL (1) NL46541C (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875358A (en) * 1954-01-27 1959-02-24 Gen Electric Co Ltd Sodium vapour electric discharge lamps
US3707645A (en) * 1970-02-28 1972-12-26 Philips Corp Vibration reducing assembly for oblong discharge lamp
US5576598A (en) * 1995-08-31 1996-11-19 Osram Sylvania Inc. Lamp with glass sleeve and method of making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875358A (en) * 1954-01-27 1959-02-24 Gen Electric Co Ltd Sodium vapour electric discharge lamps
US3707645A (en) * 1970-02-28 1972-12-26 Philips Corp Vibration reducing assembly for oblong discharge lamp
US5576598A (en) * 1995-08-31 1996-11-19 Osram Sylvania Inc. Lamp with glass sleeve and method of making same

Also Published As

Publication number Publication date
BE417554A (en(2012)) 1936-10-31
FR810701A (fr) 1937-03-27
GB457266A (en) 1936-11-24
DE649006C (de) 1937-08-16
NL46541C (en(2012)) 1939-08-15

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