US2200940A - Gaseous electric discharge device - Google Patents

Gaseous electric discharge device Download PDF

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Publication number
US2200940A
US2200940A US17082A US1708235A US2200940A US 2200940 A US2200940 A US 2200940A US 17082 A US17082 A US 17082A US 1708235 A US1708235 A US 1708235A US 2200940 A US2200940 A US 2200940A
Authority
US
United States
Prior art keywords
container
lamp
electric discharge
base
gaseous electric
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
US17082A
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English (en)
Inventor
Uyterhoeven Willem
Verburg Cornelis
Schouwstra Pieter
Johannes P M Mutsaers
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 US2200940A publication Critical patent/US2200940A/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
    • H01J61/54—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
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/58—Means for fastening the separate part to the vessel, e.g. by cement

Definitions

  • the present invention relates to gaseous electric discharge devices generally and more particularly the invention relates to such devices the container of which has two or more parallel parts and which is at an elevated temperature, such as 200 C. or more, during the operation of the device.
  • Such lamps usually contain the vapor of a diflicultly vaporized metal, that is a metal the vapor pressure of which at a temperature of 200 C. is less than 1 mm., such as sodium,-
  • a lamp unit which comprises a gaseous electric discharge lamp device the. elongated container of which is bent into four parallel, adjacent parts.
  • the advantage in the structure is that it is more easily mounted in lamp units comprising the lamp and a heat conservator thereof. we have observed that when the ends of such folded lamp containers are rigidly fastened in a common base the container is apt to break due to the expansion and contraction thereof under the service condi tions of the lamp.
  • the object of the present invention is to provide a lamp unit comprising a heat conservator and a gaseous electric discharge device having a folded container in which there is no possibility of the lamp container breaking due to the expansion and contraction thereof under service conditions of the lamp.
  • Another object of the invention is to provide a lamp unit of the above type which is easily assembled and taken apart.
  • Another object of the invention is to facilitate the starting of the gaseous electric discharge lamps in such lamp units. Still further objects and advantages attaching to the device and to its use and operation will be apparent to those skilled in the art from the following particular description.
  • the invention attains its objects by fastening the supporting base for the container of the gaseous electric discharge lamp at a part of said container between the ends thereof, leaving the ends of the container free to move when the container expands and contracts under the service conditions of the lamp, and by utilizing an element of the base as an auxiliary electrode to facilitate the starting of the lamp.
  • Fig. 1 is a front elevational partly sectional view of a lamp embodying the invention
  • Fig. 2 is a sectional view along the line 2-2 of Fig. 1, and
  • Fig. 3 is a side elevational, partly sectional view of the lamp shown in Fig. 1.
  • the new and novel lamp comprises an elongated container bent into four parallel parts and having an electrode 3, l sealed into'each end thereof.
  • Each of said electrodes 3, l consist of an element 3 which is electron emittingwhen heated and which consists of a coiled tungsten filament having another filament, such asa tungsten or a nickel filament, wrapped around it.
  • Said element 3 is coated or impregnated with an electron emitting material, such as barium oxide.
  • Said element 3 is surrounded by anopen ended, sheet metal cylinder 4 which is electrically connected thereto.
  • Said container I has a gaseous atmosphere therein consisting of a mixture of a starting gas, such as a mixture of neon to which is added a small percentage of argon, and a metal vapor, such as sodium vapor.
  • a small quantity of sodium is introduced into said container I during the manufacture of the lamp which is the source of the sodium vapor during the operation of the lamp.
  • the container I must be at an elevated temperature during the operation of the lamp in order to obtain an effective metal vapor pressure therein and a heat conservator, such as a double walled jacket having the space between the walls thereof evacuated, which conservator surrounds the lamp container and reduces the heat losses therefrom, is useful for this purpose.
  • a heat conservator such as a double walled jacket having the space between the walls thereof evacuated, which conservator surrounds the lamp container and reduces the heat losses therefrom, is useful for this purpose.
  • the light emitted thereby is rich in rays characteristic of the sodium vapor.
  • a base 5 of heat resisting, insulating material, such as porcelain, is fastened to a curved part of the container I at approximately the curved mid-part of said container I.
  • the base 5 is fastened to said container I by the clamping element 6, I, I.
  • the part 6 of said clamping element 6, I, 8 is a rigid body of conducting material,' nickel, for example, which fits the curvature of the container I on one side thereof.
  • the other side of said part 6 fits into an indentation in the base 5.
  • the part 1 of the clamping element 6, I, 8 is flexible and is attached at one end thereof to the part 8.
  • the other end of said flexible part I is removably attached to the other end of the part 6 by the screw bolt 8.
  • Said part 1 passes around the container I and clamps said container I against said part 6.
  • a thin layer of heat resisting, insulating material, such as asbestos, is interposed between the container I and said part I.
  • Said part 6 has fastenedthereto a metal pinIO which passes through an opening in the base and which is threaded.
  • Said clamping element 6, I, 8 is fastened to said base 5 by the nut II which pulls up and holds the pin I0 in position on the base 5.
  • the element 6 also serves as an auxiliary electrode having a capacitive action for facilitating the starting or the gaseous electric discharge device.
  • the pin I 0 is a contact element for the auxiliary electrode 6. i
  • the wall covered by said electrode 6 is coated, by methods well known in the art, as by the Schoop method. for example, with a thin layer I3 of metal (Fig. 1). This avoids the creation of an electric field in the space between the layer l3 and the electrode 6 and prevents ionization of the air in this space.
  • the electrodes 3, 4 of the lamp are connected by flexible leads I4 to the contact pins 12 of the base 5.
  • Said leads H are removably connected to said contact pins I2.
  • the flexible leads I permit the ends 2 of the container I to move when the container I expands and contracts under the service conditions or the lamp.
  • a suitable heat conservator (omitted from the drawing for simplicity of illustration) is a double walled jacket surrounding the container I and having the space between the walls thereof evacuated. Said conservator is provided with a supporting ring of heat resisting material, such as porcelain, cemented thereto and which ring makes a tight mechanical joint with the shoulder of the base 5.
  • the lamp unit is easily assembled by inserting the container l in the clamp 6, I, 8, tightening the bolt 8, attaching leads I 4 to the pins I2 and slipping the supporting ring of the heat conservator onto the base 5.
  • the lamp unit is just as easily taken apart.
  • the ends 2 of the lamp device are free to move when the container I expands or contracts so that the danger of the container walls breaking is obviated.
  • the lamp is quickly started into operation by the auxiliary electrode 6 mounted along the discharge path between the electrodes 3, 4.
  • a lamp unit comprising in combination a gaseous electric discharge lamp device, a base therefore, and a clamp of electrically conducting material, said lamp comprising an elongated, curved container, said base being removably fastened to said container between the ends of said container by said clamp, the ends of said container being free to move with respect to the other elements of said lamp unit.
  • a lamp unit comprising in combination a gaseous electric discharge lamp device, a base therefor, and a clamp of electrically conducting material, said lamp comprising an elongated, curved container, said base being removably fastened to said container between the ends of said container by said clamp, said clamp being an auxiliary electrode to facilitate the starting or said lamp, and a body of heat insulating material interposed between the movable part 01 said clamp and said container, the ends of said container being free to move with respect to the other elements of said lamp unit.
  • a lamp unit comprising in combination a gaseous electric discharge lamp device and a base therefor, and a clamp of electrically conducting material, said lamp comprising an elongated, curved container, said base being removably fastened to said'container between the ends of said container by said clamp, said clamp being an auxiliary electrode to facilitate the starting of said lamp, said container having a metal coating on the outer surface thereof in contact with the immovable part of said clamp, the ends of said container being free to move with respect to the other element of said lamp unit.
  • u may 1h, 19h0.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
US17082A 1934-04-19 1935-04-18 Gaseous electric discharge device Expired - Lifetime US2200940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL428838X 1934-04-19

Publications (1)

Publication Number Publication Date
US2200940A true US2200940A (en) 1940-05-14

Family

ID=19786131

Family Applications (1)

Application Number Title Priority Date Filing Date
US17082A Expired - Lifetime US2200940A (en) 1934-04-19 1935-04-18 Gaseous electric discharge device

Country Status (5)

Country Link
US (1) US2200940A (enrdf_load_stackoverflow)
DE (1) DE642389C (enrdf_load_stackoverflow)
FR (1) FR789000A (enrdf_load_stackoverflow)
GB (1) GB428838A (enrdf_load_stackoverflow)
NL (1) NL38910C (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794906A (en) * 1954-06-16 1957-06-04 Harold E Edgerton Gaseous-discharge apparatus
DE3005017A1 (de) * 1979-02-13 1980-08-21 Westinghouse Electric Corp Elektrische lampeneinheit
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp
US4401914A (en) * 1978-02-14 1983-08-30 U.S. Philips Corporation Low-pressure sodium vapor discharge lamp
USD270480S (en) 1979-11-26 1983-09-06 North American Philips Electric Corp. Compact fluorescent lamp or similar article for a lighting unit
US4546284A (en) * 1978-10-26 1985-10-08 U.S. Philips Corporation Low-pressure mercury vapor discharge lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110754B (de) * 1958-09-05 1961-07-13 Philips Nv Aus mindestens einer rohrfoermigen Entladungslampe bestehende Lichtquelle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794906A (en) * 1954-06-16 1957-06-04 Harold E Edgerton Gaseous-discharge apparatus
US4401914A (en) * 1978-02-14 1983-08-30 U.S. Philips Corporation Low-pressure sodium vapor discharge lamp
US4546284A (en) * 1978-10-26 1985-10-08 U.S. Philips Corporation Low-pressure mercury vapor discharge lamp
DE3005017A1 (de) * 1979-02-13 1980-08-21 Westinghouse Electric Corp Elektrische lampeneinheit
US4300073A (en) * 1979-02-13 1981-11-10 Westinghouse Electric Corp. Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp
USD270480S (en) 1979-11-26 1983-09-06 North American Philips Electric Corp. Compact fluorescent lamp or similar article for a lighting unit

Also Published As

Publication number Publication date
FR789000A (fr) 1935-10-21
DE642389C (de) 1937-03-03
GB428838A (en) 1935-05-20
NL38910C (enrdf_load_stackoverflow)

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