US2030806A - Gaseous electric discharge device - Google Patents

Gaseous electric discharge device Download PDF

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Publication number
US2030806A
US2030806A US12927A US1292735A US2030806A US 2030806 A US2030806 A US 2030806A US 12927 A US12927 A US 12927A US 1292735 A US1292735 A US 1292735A US 2030806 A US2030806 A US 2030806A
Authority
US
United States
Prior art keywords
tube
container
electrodes
discharge
lamp
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
US12927A
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English (en)
Inventor
Wiegand Kurt
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 US2030806A publication Critical patent/US2030806A/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
    • H01J61/56—One or more circuit elements structurally associated with the lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/10—Shields, screens, or guides for influencing the discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the present invention relates to gaseous electric discharge devices generally and moreparticularly the invention relates to such devices useful as light sources. 0 w
  • gaseous electric discharge lamps having a tubular container filled with'rare gas and operating on high voltage and low current that is, a glow discharge lamp
  • the efficiency of gaseous electric discharge lamps having a tubular container filled with'rare gas and operating on high voltage and low current is increased by mounting another tube closedatboth ends axially in the container and between the electrodes.
  • the inner tube reduces the discharge space in the container andincreases, the luminous surface of the discharge with relation to the volume thereof which increases the efficiency of the lamp.
  • Discharge'lamps of the high'voltage, low current type while useful in signs or the like due to the high surface brilliancy thereof are not useful as illuminants because such lamps do not emit sufficient light to bepractical for this purpose. Lamps operating on lowvoltage and high current, that is, are lamps, are very useful as light sources.
  • the object of the present invention is to provide an efficient gaseous electric discharge lamp of the low voltage, high current type. 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 par- 35 ticular description.
  • tubular, gaseous electric discharge lamps of the low voltage, high current type that is, an arc lamp, having a closed tube axially mounted in the con- 40 tainer and between the electrodes thereof is a steady, non-flickering light when the gaseous atmosphere therein consists of or comprises the vapor of a vaporizable metal, for example, mercury, or a diflicultly vaporizable metal, by which I mean a metal the vapor pressure of which at a. temperature of 200 C. is less than 1 mm., such as sodium, cadmium, zinc, or magnesium.
  • a vaporizable metal for example, mercury
  • a diflicultly vaporizable metal by which I mean a metal the vapor pressure of which at a. temperature of 200 C. is less than 1 mm., such as sodium, cadmium, zinc, or magnesium.
  • the new and novel gaseous electric discharge device comprises an 5 elongated, tubular, glass container I having a thermionic electrode 6 mounted on a current lead 5 sealed therein at each end thereof and a gaseous atmosphere therein comprising a starting, rare gas, such as neon, argon, or krypton, and a quan- 1o tity of vaporizable material 2, such as sodium.
  • a starting, rare gas such as neon, argon, or krypton
  • a quan- 1o tity of vaporizable material 2 such as sodium.
  • a constricted part I I is provided in the walls of said container I contiguous to said electrodechambers 3.
  • a sealed glass tube 1 closed 25 at both ends and having the, longitudinal axis thereof coincident with the longitudinal axis of said container I is mounted in said container I withthe ends thereof terminating adjacent said Said tube I tapers down 30 evenly. from the middle thereof toward both ends.
  • Said tube “I is supported in the longitudinal axis of said container I by resilient spring members 8 attached thereto and pressing against the inner wall of said container I.
  • a coiled high resistance wire! extends along the longitudinal axis of said tube '1 and the ends III of said wire 9 protrude fromthe ends of said tube 1 toward the adjacent electrode 6.
  • the center of said wire 9 is supported by the wire I3 looped therearound and 40 pressing against the tube I. Said wire 9 facilitates the starting of the main discharge between said electrodes 6.
  • the tube] is evacuated or filled with an indifferent gas, such as argon.
  • the electric discharge between said electrodes 6 starts in the gas and the heat of the gas dis' charge raises thetemperature of the-sodium 2 to the vaporization temperature thereof.
  • the light emitted thereby is rich in rays characteristic of the sodium vapor and the lamp is a highly efllcient source of light useful for purposes of illumination.
  • the lamp is a low voltage, high current, are lamp.
  • the electron emitting electrodes 6 make possible 5 to a minimum.
  • the mid-portion of the container I is at as high, if not a higher, temperature as the other parts thereof due to the fact that the discharge between said electrodes 6 is constricted at this part and condensation of the metal vapor cannot take place at said mid-portion.
  • the electrode chambers are at a temperature above the condensation temperature of the metal during'the operation of the device due to the heating thereof by the electrodes 6, and to the reduction of heat losses therefrom by the insulating material 4.
  • the constriction ll likewise prevents deposits of condensed vapor in said chambers 3.
  • the coolest part of said container I is the region thereof contiguous to the constriction II and between said constriction H and the center of container l, but during the operation of the device even this region is above the condensation temperature of the metal vapor.
  • a gaseous arc discharge lamp comprising a tubular container,'electrodes sealed therein, a' gaseous atmosphere therein comprising a metal the use of high current densities in the lamp and vapor and a closed tube in said container, a "high electrical resistance conductor in said tube the ends of said conductor protruding from said tube and being adjacent said electrodes to facilitate the starting of the discharge therebetween', the longitudinal axis of said tube being in the longitudinal axis of said container and the outside diameter of said tube being less than the inside diameter of said container to permit the passage of the arc discharge between said electrodes.
  • a gaseous arc discharge lamp comprising a tubular container, electrodes sealed therein, a
  • gaseous, atmosphere therein comprising a metal vapor and a closed tube in said container, the longitudinalaxisof said tube being in the longitudinal axis of said container and the largest outside diameter of said tube being less than the inside diameter of said container to permit the passage of the arc discharge between said elecin said container, the longitudinal axis of said tube being: in the longitudinal axis of said container and the largest outside diameter of said tube beingless than the inside diameter of said container to permit the passage of the are discharge between said clectrodes, the mid-portion of said tube being the part of largest outside diameter thereof, the outside diameter of said tube decreasing as'the distance from the center thereof increases, the ends of said tube being adjacent said electrodes.
  • a gaseous arc discharge lamp comprising a tubular container, electrodes sealed therein, a gaseous atmosphere thereincomprising a sodium metal vapor and a closed tube in said container, the longitudinal axis of said tube being in the longitudinal axis of said container and the largest outside diameter of said tube being less than the inside diameter of said container to permit the passage of the arc discharge between said electrodes, the mid-portionof said tube being the part of largest outside diameter thereof, the out- 1 side diameter of said tube decreasing as the distance from the center thereof increases, the ends of said tube being adjacent said electrodes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
US12927A 1934-03-29 1935-03-25 Gaseous electric discharge device Expired - Lifetime US2030806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE433365X 1934-03-29

Publications (1)

Publication Number Publication Date
US2030806A true US2030806A (en) 1936-02-11

Family

ID=6499272

Family Applications (1)

Application Number Title Priority Date Filing Date
US12927A Expired - Lifetime US2030806A (en) 1934-03-29 1935-03-25 Gaseous electric discharge device

Country Status (3)

Country Link
US (1) US2030806A (fr)
FR (1) FR433365A (fr)
GB (1) GB433365A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767957A (en) * 1972-03-17 1973-10-23 Ott J Labor Inc Fluorescent lamp with shielded electrodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767957A (en) * 1972-03-17 1973-10-23 Ott J Labor Inc Fluorescent lamp with shielded electrodes

Also Published As

Publication number Publication date
GB433365A (en) 1935-08-13
FR433365A (fr) 1912-01-05

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