US2056648A - Gaseous electric discharge device - Google Patents

Gaseous electric discharge device Download PDF

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Publication number
US2056648A
US2056648A US663792A US66379233A US2056648A US 2056648 A US2056648 A US 2056648A US 663792 A US663792 A US 663792A US 66379233 A US66379233 A US 66379233A US 2056648 A US2056648 A US 2056648A
Authority
US
United States
Prior art keywords
container
electric discharge
envelope
gaseous
lamp unit
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
US663792A
Other languages
English (en)
Inventor
Eduard G Dorgelo
Bol Cornelis
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 US2056648A publication Critical patent/US2056648A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium

Definitions

  • the present invention relates to gaseous electric discharge devices generally and more particularly the invention relates to improvements in such devices the gaseous atmosphere of which comprises a metalvapor.
  • the object of the present invention is to provide a lamp unit of simple structure in which the container of the gaseous electric discharge device is at a high temperature during the operation of the lamp unit.
  • Another object of the invention is to provide a lamp unit of the above type which leads itself readily to manufacture by automatic machinery.
  • a further object of the invention is to provide a lamp unit the elements of which are quickly and easily assembled. Fur- 3o ther objects and advantages attaching to the de vice and to its use and operation will be apparent to those skilled in the art from the following particular description.
  • the new and novel lamp unit comprises a gaseous electric discharge device having a gaseous atmosphere comprising a metal vapor and a double-walled light transmitting envelope therefor separate from said 0 container.
  • the space between the container of the device and said double walled envelope is closed oii by a ring of heat insulation material, for example.
  • Said heat insulation ring comprises a resilient core, such as a metal spring, covered 45 with a heat insulation material, such as asbestos.
  • Said insulation ring fits into circular recesses in the container of the lamp device and presses against one of the walls of said double walled envelope.
  • a lamp unit having the above structure lends itself readily to manufacture by automatic machinery as the gaseous electric discharge device and the envelope therefor are made separately on standard machines well known in the art.
  • the container, the envelope and the heat insulating ring are easily and quickly assembled
  • prior devicestainer 21 has two electron emitting cathodes 20 into a lamp unit. Further if one of the separate elements of the lamp unit breaks during the operation of the unit it is necessary to replace only that element rather than the whole structure which makes the lamp unit a very practical de- 5 vice.
  • FIG. 1 is an elevational, schematic view of one embodiment of the invention
  • Fig. 2 is a top, partly sectional view of a heat insulating ring useful in the embodiment of the invention illustrated in Fig. l and Fig. 3 is an elevational, schematicview of another embodiment of the invention.
  • the new and novel lamp unit comprises a gaseous electric discharge device having an elongated container 21.
  • Said container 21 is filled with a gaseous atmosphere, such as sodium vapor, or a mixture comprising a rare gas, such as neon, argon, and a metal vapor, such as sodium vapor.
  • and two anodes 22 and 23 sealed into the 5 stem 28 thereof.
  • Said anodes 22 and 23 are metal cylinders connected to and surrounding said cathodes 20 and 2
  • consist of a metal filament, such as a tungsten filament, coated with an electron emitting material, such as barium oxide.
  • a disc 29 of heat insulating material rests on said stem 28 and presses against the lower part of the circular indentation 30 in the walls of said container 21.
  • the upper part of said container 21 is filled with a gaseous mixture comprising a rare gas, such as neon, and a condensible metal vapor, such as sodium vapor.
  • the disc 29 substantially or completely, as desired, seals of! the lower, stem part of said container 21 from the upper part of said container 21.
  • the condensible metal vapor is thus prevented from entering the lower part of said container 21 which is the coolest part of said container during the operation of the gaseous electric discharge device.
  • the un desired condensation of the condensible metal vapor in the lower part of said container 21 is thus avoided during the operation of'the device. 5
  • a heat insulating material 32 such as asbestos, is located in the circular indentation 39 of said container 21 and presses against the inner wall of said envelope 9 to close off the space between the inner wall of said envelope 9 and said container 21 and to separate said lamp parts.
  • the container 21, the envelope 9 and the ring ll, 32 are quickly and easily assembled into a lamp unit and said envelope 9 is easily removable from said container 21.
  • the heat generated by the gaseous electric discharge between the electrodes of the device is retained within the space between said container 21 and the envelope 9 so that said container 21 is at a high temperature during the operation of the lamp unit to maintain the vapor in the electric discharge device at a correspondingly high pressure during the operation of said lamp unit.
  • the metal vapor thus participates in conducting the electric discharge between said electrodes 22 and 23 and the spectrum of the light emitted by the lamp unit is rich in the light rays characteristic of the metal vapor.
  • the embodiment of the invention illustrated in Fig. 3 is similar to that illustrated in Fig. 1 except that in this embodiment the gaseous electric discharge lamp device is provided with a cylindrical base 33.
  • the outer diameter of said base 33 closely approaches the inner diameter of the inner wall of said envelope 9 to prevent the entrance of the colder outside air into the space between the inner wall of said envelope 9 and said container 21.
  • is provided on said base 33 to assist in supporting said envelope 9.
  • Circular electrodes 35 and 36 having electrode leads 31 and 39 attachedthereto respectively are sealed into the space between the inner and outer wall of said envelope 9.
  • a gaseous atmosphere which emits light of the same or of a difierent color as that emitted by the gas in said container" 21 is present in said envelope 9.
  • said envelope 9 is filled with neon at a pressure of approximately 1-10 mm.
  • the light emitted by the gaseous electric discharge between said electrodes 35 and 39 complements the light emitted by the gaseous electric discharge lamp device having the container 21.
  • the operation of the embodiment of the invention illustrated in Fig. 3 is the same as that of the embodiment illustrated in Fig. 1.
  • a lamp unit comprising in combination, a gaseous electric discharge lamp device having a container, a double walled envelope substantially surrounding said container, a circular recess in said container and a resilient, heat insulating ring fitted into said recess and pressing against the inner wall of said envelope.
  • a lamp unit comprising in combination, a gaseous electric discharge lamp device having a container, a double walled envelope substantially surrounding said container and a resilient, heat insulating ring interposed between said container and the inner wall of said envelope.
  • a lamp unit comprising in combination, a gaseous electric discharge lamp device having a container, a gaseous atmosphere therein and a vaporizable metal therein, said container having a stem part and a septum closing oif said stem part from the part of said container containing said vaporizable metal, a double walled envelope substantially surrounding said container and a gasket of flexible, heat insulating material fitting around said container and against the inner surface of said envelope, said gasket being substantially in line with said septum.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
US663792A 1931-12-23 1933-03-31 Gaseous electric discharge device Expired - Lifetime US2056648A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL392796X 1931-12-23
NL401240X 1932-07-27
DE457740X 1935-08-26

Publications (1)

Publication Number Publication Date
US2056648A true US2056648A (en) 1936-10-06

Family

ID=31950151

Family Applications (1)

Application Number Title Priority Date Filing Date
US663792A Expired - Lifetime US2056648A (en) 1931-12-23 1933-03-31 Gaseous electric discharge device

Country Status (6)

Country Link
US (1) US2056648A (enrdf_load_html_response)
BE (1) BE390343A (enrdf_load_html_response)
DE (1) DE652752C (enrdf_load_html_response)
FR (2) FR741891A (enrdf_load_html_response)
GB (3) GB392796A (enrdf_load_html_response)
NL (1) NL45860C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001060A (en) * 1957-07-22 1961-09-19 Esquire Inc Floodlight

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610289A (en) * 1949-02-23 1952-09-09 Arthur A Brainerd Enclosed internally heated electric discharge lamp luminaire for variable temperature service
US2849598A (en) * 1953-09-08 1958-08-26 Willis L Lipscomb Non-glare lighting fixture
FR2649827B1 (fr) * 1989-07-13 1992-06-12 Sodern Dispositif de chauffage d'un tube d'alumine et tube a decharge muni d'un tel dispositif
CN108039004A (zh) * 2017-12-26 2018-05-15 佛山市道静科技有限公司 一种基于无线通讯的智能道路作业车

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001060A (en) * 1957-07-22 1961-09-19 Esquire Inc Floodlight

Also Published As

Publication number Publication date
GB457740A (en) 1936-12-04
FR47656E (fr) 1937-06-16
GB401240A (en) 1933-11-09
NL45860C (enrdf_load_html_response) 1939-06-15
DE652752C (de) 1937-11-08
GB392796A (en) 1933-05-25
BE390343A (enrdf_load_html_response) 1932-09-23
FR741891A (enrdf_load_html_response) 1933-02-22

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