US2103227A - Gaseous electric discharge lamp device - Google Patents

Gaseous electric discharge lamp device Download PDF

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Publication number
US2103227A
US2103227A US159428A US15942837A US2103227A US 2103227 A US2103227 A US 2103227A US 159428 A US159428 A US 159428A US 15942837 A US15942837 A US 15942837A US 2103227 A US2103227 A US 2103227A
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US
United States
Prior art keywords
container
metal
electric discharge
wall
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
US159428A
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English (en)
Inventor
Mari J Druyvesteyn
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 US2103227A publication Critical patent/US2103227A/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
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass

Definitions

  • the present invention relates to gaseous-electric discharge lamp devices generally and more particularly the invention relates to such devices the gaseous atmosphere of which consists of or ,5. comprises a metalvapor.
  • the container glasses, used for incandescent lamps and electric discharge lamps containing only a fixed gas are not" suitable for use in con-' nection with a discharge lamp containing a chemically active metal For this reason these discharge devices are made of special glasses, or the inside .of the glass wall as possible to the metal vapors.
  • the composition of this glass or coating naturally depends on the I particular metal vapor used.
  • the wall material is more resistant to the metal vapor than to the solid or liquid metal from which the vapor is developed. This is particularly true in the case of a magnesium or thallium vapor discharge device.
  • the wall can be made resistant to themetal vapor, but the useful life thereof is shortened by the attack on the wall during operation by the surplus'metal in the tube,which is not vaporized, whereby theiwall soon loses its mechanical properties and the tube breaks after a short period of operation.
  • the object of the present invention is to prevent the unvaporized portion of the metal from attacking the container of gaseous electric discharge lamp devices of the above type. Still further objects and advantages attaching to the device and to its use and parent to those skilled in the art from the following particular description.
  • the invention attains its object by providing a condensing surface on the container which surface consists of a material resistant to the eflects of said metal in the solid, and which is interposed between the unvaporized metal and the wall of the container.
  • This structure prevents the attack of the unvaporized metal on the container glassand the gaseous electric discharge lamp device has a long, useful operating life.
  • the condensing surface must be at a lower 50 temperature than the other. parts of the' container during the operation of the device and various means are useful for maintaining the pro tive layer at the necessary temperature' For example, the heat losses from that part of- .55 the container wall covered by the protective layer in relation to the heat losses from the remaining part of said wall are increased.
  • the part covered by the protective layer is made rough or black on the outside to increase so the heat radiation locally.
  • the container can v layerextends in the is covered wlthsubstances which are as resistant operation will be ap-' liquid or vapor state (Cl. 176-122) I also be formed in sucha manner that the covered part of the wall is heatedless by the dis-' charge than the other parts. of the wall.
  • the container is so constructed that the first mentioned-part of the wall is farther removed from the discharge paththan-the last mentionedpa'rt,
  • the container is of tubular shape and the protective layer is arranged between the electrodes so that'the vaporizable metal is. near the discharge path.
  • theprotective direction of the tube axis and has an oblong form.
  • the protective layer should be of such thicknessthat the vaporizable metal cannot penetrate through it;
  • a layer of zirconium in g fixed to the container wall is preferred.
  • the gaseous electric discharge lamp device comprises a tubular container I having two thermior'iic. activated electrodes ,2 sealed therein, one at each end thereof. Said electrodes are mounted closely adjacent the respective ends of the container l to maintain said ends at anelevated temperature during the operation of the device. Said electrodes 2 each FICE-1.:
  • the tube contains a rare; starting gas consisting of neon, for example, at a pressure of about 12 mm. Aside from this there is on the zirconium layer 3 in thetube, a quantity of magnesium which during operation furnishes the necessary magnesium vapor.
  • the black layer 4 locally increases the heat loss
  • the zirconium strip is the coldest part of the container enclosing the discharge space.
  • these are arranged near the ends of the container I.
  • the ends of the container are coated on the outside with platinum mirrors to reduce the heat loss of said ends.
  • these spaces can, for instance, be closed oil! with the aid of screens or septums, or the tube wall can be so contracted that practically no magnesium vapor gets into the spaces behind the electrodes.
  • the lamp device is mounted in a heat conservator, such as a double walled flask, when desired. 7
  • Afigaseous electric discharge device comprisingacontainer, electrodes sealed therein, a quantity or vaporizable metal therein the vapor of which is luminosity producing during the operationof the device, the inner wall of said container being resistant to the 'hot, ionized metal vapor and being subject to attack by the unvaporized'portion of said metal, a condensing surface on said container and a material inert with respect to'said metal in any state interposed between said surface and the unvaporized portion of said metal and covering said surface to protect said surface from the deleterious effects of said unvaporized metal.
  • a gaseous electric discharge device comprising an elongated, tubular container, electrodes sealed therein at the ends thereof, ,a quantity of vaporizable metal therein the vapor of which is luminosity producing during the operation of the device, the inner wall of said container being resistant to the hot, ionized metal vapor and being subject to attack by the unvaporized portion of'said metal, a condensing surface on said container, said surface extending longitudinally along said container between said electrodes, and a material inert with respect to said metal in any, state interposed between said surface and the unvaporized portion of said metal and covering said surface to protect said surface from the deleterious effects of said unvaporized metal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US159428A 1936-08-28 1937-08-16 Gaseous electric discharge lamp device Expired - Lifetime US2103227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE482036X 1936-08-28

Publications (1)

Publication Number Publication Date
US2103227A true US2103227A (en) 1937-12-21

Family

ID=6542757

Family Applications (1)

Application Number Title Priority Date Filing Date
US159428A Expired - Lifetime US2103227A (en) 1936-08-28 1937-08-16 Gaseous electric discharge lamp device

Country Status (5)

Country Link
US (1) US2103227A (sl)
BE (1) BE423309A (sl)
FR (1) FR826011A (sl)
GB (1) GB482036A (sl)
NL (1) NL51717C (sl)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440832A (en) * 1945-05-29 1948-05-04 Pennybacker Miles Gas discharge lamp
US2509071A (en) * 1945-05-29 1950-05-23 Pennybacker Miles Gas discharge lamp
US3248256A (en) * 1962-07-26 1966-04-26 Ibm Vacuum evaporation method to obtain silicon dioxide film
US3851200A (en) * 1972-12-11 1974-11-26 Gen Electric Heat and light reflective coating on quartz lamp
US3863089A (en) * 1970-09-28 1975-01-28 Owens Illinois Inc Gas discharge display and memory panel with magnesium oxide coatings
US4731560A (en) * 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US5204578A (en) * 1990-11-01 1993-04-20 General Electric Company Heat sink means for metal halide lamp

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440832A (en) * 1945-05-29 1948-05-04 Pennybacker Miles Gas discharge lamp
US2509071A (en) * 1945-05-29 1950-05-23 Pennybacker Miles Gas discharge lamp
US3248256A (en) * 1962-07-26 1966-04-26 Ibm Vacuum evaporation method to obtain silicon dioxide film
US4731560A (en) * 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US3863089A (en) * 1970-09-28 1975-01-28 Owens Illinois Inc Gas discharge display and memory panel with magnesium oxide coatings
US3851200A (en) * 1972-12-11 1974-11-26 Gen Electric Heat and light reflective coating on quartz lamp
US5204578A (en) * 1990-11-01 1993-04-20 General Electric Company Heat sink means for metal halide lamp

Also Published As

Publication number Publication date
NL51717C (sl)
GB482036A (en) 1938-03-22
BE423309A (sl)
FR826011A (fr) 1938-03-21

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