US2177696A - Gaseous electric discharge lamp device - Google Patents

Gaseous electric discharge lamp device Download PDF

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Publication number
US2177696A
US2177696A US222688A US22268838A US2177696A US 2177696 A US2177696 A US 2177696A US 222688 A US222688 A US 222688A US 22268838 A US22268838 A US 22268838A US 2177696 A US2177696 A US 2177696A
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United States
Prior art keywords
discharge
electrodes
temperature
lamp device
solid 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
US222688A
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English (en)
Inventor
Ewest Hans
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
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
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Publication of US2177696A publication Critical patent/US2177696A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822—High-pressure mercury lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0048—Tubes with a main cathode
    • H01J2893/0056—Parts inside tubes brought to incandescence by the discharge

Definitions

  • the present invention relates to gaseous electric discharge lamp devices generally and more particularly the invention relates to such devices of the high vapor pressure type.
  • the light from the discharge in gaseous electric discharge lamp devices has a line spectrum and for many purposes it is desirable to complement the light'emitted by the discharge in the device with light of a different color.
  • the object of the present invention is to pro- 60 vide a gaseous 'electric discharge lamp device of the high pressure type having a solid body mounted in heat receiving relation to the arc discharge in said device which lamp emits light from the arc discharge and the solid body heated by said I. discharge. Still further objects and advantagesv n the other attaching to the device and to its use and opera-v 7 tion will be apparent to those skilled in the art from the following particular description.
  • the invention attains its object bymounting the solid body at such distance from the axis of I the arc discharge that during the operation of the lamp the temperature of said body is below that at which the body emits light of desired intensity and by providing means to supply and control current to said body during the operation of the device.
  • a manually operated or an automatically operating regulatable resistance is connected into the current lead of the luminous solid body so that it is possible during operation of the lamp to-adjust the luminous body temperature within wide limits according to desire.
  • the temperature of the luminous body is so controlled that, while taking into considera- 80 tion the required life span of the lamp,'the'most favorable efliciency and'luminous density is obtained, or the mixed light from the are discharge and from the luminous solid body, has the most favorable spectrum is used.
  • the current lead for the solid body is connected to the current lead of one of the thermionic electrodes through an adjustable resistance.
  • an auxiliary heating discharge occurs between the solid body and the thermionic electrode other than that to which the current lead for the solid body is connected.
  • the magnitude of the current flowing in the auxiliary discharge, 85 incident at the solid body is regulated by said series resistance so that the solid body, which for the purpose for which it is not brought to the desired temperature by the main arc discharge, is heated to said temperature by the additional heating thereof by the auxiliary discharge incident thereat.
  • the solid body connected in this manner is an. auxiliary electrode which facilitates the starting of the main arc discharge in the usual manner.
  • Fig.2 .of the drawing is a wiring diagram of a circuit for the lamp shown in Fig. 1. 5C
  • the gaseous electric discharge lamp device comprises a vitreous container l-,--such as a quartz container or a high softening point glass container, having two thermionic, activated electrodes 2 and l sealed there- 88 in.
  • Said electrodes 2 and 3 are mounted on leads 4 and 5, respectively, which pass through the wall of the container I into the base I5 attached to said container I and which are fastened to the contacts 6 and 1, respectively, of said base I5.
  • Said electrodes 2 and 3 are separated a distance of about 6 mm. and consist of a hollow, perforated metal shell, such as a tungsten shell, containing a quantity of material having electron emissivity characteristics, such as barium oxide, strontium oxide or a mixture of such oxides.
  • Said container I has a spherical part in which said electrodes 2 and 3-are mounted, a bell shaped dome having a heat reflecting coating, such as a silver coating, on the outer wall thereof and a bell shaped perforated bailie 9 mounted in said dome with the open end thereof above the discharge path between said electrodes 2 and 3.
  • Said container I has'a starting'gas therein, such as argon, or neon or a mixture of these gases, at a pressure of about 1 to 20 mm. and a quantity II of mercury in such amount that it is wholly vaporized at a temperature lower than operating temperature of the container I and at a desired high operating pressure.
  • the hot vapors from the discharge flow upward into the bafile 9 and through the perforations I0 therein and the particles which are sputtered ofl the electrodes are carried upward by the convection currents into the baflie 9 where they are deposited so that the light transmitting spherical part of the container I remains free from light absorbing deposits of such sputtered electrode material.
  • a tungsten sphere or a tantalum carbide sphere is supported in said container I by the current lead I3 which is connected to the contact I4 of the base I5.
  • Said body I2 is mounted along the discharge path between said electrodes 2 and 3 and about 1 mm. from the axis of said discharge path.
  • the container l of the device described above has therein a starting gas and a quantity of mercury it will be understood, of course, that this is the preferred embodiment of the invention and that the discharge conducting, luminosity producing gaseous atmosphere in the lamp device consists of gases, vapors, or mixtures of these to obtain light of a color suitable for a particular purpose, when desired.
  • the position of the solid, light emitting body relative to the discharge is determined by the size of the body, the arc current and the vapor pressure and when these three are suitably proportioned the solid body can be mounted wholly or partly in the path of the arc discharge, when desired.
  • a multiplicity of solid bodies each consisting of a difierent material emitting distinctive colored light, are mounted in the lamp device and are caused to emit light alternately or simultaneously by controlling current fiow thereto individually.
  • the main arc discharge supporting electrodes are connected across the terminals of an alternating current source and the luminous, solid body is connected to a direct current source I prefer to connect the solid body as an anode.
  • the solid body is provided with a heater to control the temperature thereof, when desired.
  • a gaseous electric discharge lamp device of the high pressure type comprising in combination, a container, thermionic electrodes sealed therein, a gaseous atmosphere therein, and a refractory metal body mounted in heat receiving relation to the arc discharge path between said electrodes, means to supply electrical energy to said metal body and means to control the temperature and the light output of said body.
  • a gaseous electric discharge lamp device of the high pressure type comprising in combination, a container, thermionic electrodes sealed therein, a gaseous atmosphere therein, and a refractory metalbody mounted in heat receivin relation to the arc discharge path between said electrodes, means to supply electrical energy to said metal body and an adjustable resistance connected in series with said body to control the temperature and the light output thereof.
  • a gaseous electricdischarge lamp device of the high pressure type comprising in combination, a container, thermionic electrodes sealed therein, a gaseous atmosphere therein, and a refractory metal body mounted in heat receiving relation to the arc discharge path between said electrodes, said metal body being connected to one of said electrodes through a series resistance to serve as a light emitting, auxiliary electrode during the starting and operation of said lamp device.

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  • Discharge Lamps And Accessories Thereof (AREA)
US222688A 1937-08-05 1938-08-02 Gaseous electric discharge lamp device Expired - Lifetime US2177696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2177696X 1937-08-05

Publications (1)

Publication Number Publication Date
US2177696A true US2177696A (en) 1939-10-31

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ID=7988726

Family Applications (1)

Application Number Title Priority Date Filing Date
US222688A Expired - Lifetime US2177696A (en) 1937-08-05 1938-08-02 Gaseous electric discharge lamp device

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US (1) US2177696A (en)van)
FR (1) FR841783A (en)van)
NL (1) NL52742C (en)van)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474403A (en) * 1942-10-15 1949-06-28 Reichinstein David Arc lamp and its low-tension ignition
US2508192A (en) * 1945-03-07 1950-05-16 Reichinstein David Arc lamp and circuit therefor
US3218510A (en) * 1960-07-27 1965-11-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric high pressure discharge lamp of high luminous intensity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474403A (en) * 1942-10-15 1949-06-28 Reichinstein David Arc lamp and its low-tension ignition
US2508192A (en) * 1945-03-07 1950-05-16 Reichinstein David Arc lamp and circuit therefor
US3218510A (en) * 1960-07-27 1965-11-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric high pressure discharge lamp of high luminous intensity

Also Published As

Publication number Publication date
FR841783A (fr) 1939-05-26
NL52742C (en)van)

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