US2272513A - Electric lamp - Google Patents

Electric lamp Download PDF

Info

Publication number
US2272513A
US2272513A US273094A US27309439A US2272513A US 2272513 A US2272513 A US 2272513A US 273094 A US273094 A US 273094A US 27309439 A US27309439 A US 27309439A US 2272513 A US2272513 A US 2272513A
Authority
US
United States
Prior art keywords
tube
tubes
gas reservoir
larger diameter
electric 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
US273094A
Other languages
English (en)
Inventor
Courdil Fernand
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.)
Claude Paz et Visseaux SA
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2272513A publication Critical patent/US2272513A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path

Definitions

  • This invention relates to electric lamps generally and more particularly the invention relates to such lamps incorporating a luminous electric discharge device having a filling of gas and/or vapour and provided with a gas reservoir.
  • Devices of this nature may be employed, for example, as light sources for search lights, beacons or signal lights of any desired color.
  • the object of the invention is to provide an eflicient, long-lived, rugged, inexpensive, easily assembled, temperature insensitive electric lamp comprising a luminous electric discharge device.
  • Another object of the invention is to provide a luminous electric discharge device useful in lamps of the above 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 particular description.
  • a luminous electric discharge device of the type specified, in accordance with the invention comprises a. central tube forming the gas reservoir and serving as a support for a second tube or tubes of smaller diameter arranged around the said first tube, the said tubes being joined together at one of their ends, whereas the other end of each tube is provided with an electrode.
  • the lamp preferably comprises an outer glass envelope which is independent of the two tubes and suitably designed so as to be removable relatively to them.
  • the outer envelope and the two tubes may be adapted separately or in combination to modify the color of the light emitted by the discharge;
  • the tubes forming the gas reservoir is not made relatively too large in diameter.
  • the arrangement according to the invention affords the additional advantage of avoiding, by reason of the rise in temperature of the tube occasioned by the presence or the outer:
  • the discharge device comprises the helically coiled glass tube 1 the lower end of which contains one of the electrodes 2, and the upper end of whichis joined by the part 3, to an extension 6 of the central tube 4; the other electrode 5 is arranged in the lower end of the central tube.
  • the extension 6 of the central tube engages with a recess provided at the hemispherical end of the protective outer envelope or vitreous jacket 1, preferably, as shown, through an intermediary sleeve 9 of semi-resilient material, such as for example, cork.
  • the lower ends of the two tubes are kept in place relatively to one another and to the outer envelope by means of an apertured closure member Ill and a mass of plastic material I I in which they are embedded.
  • the device is also provided with a sleeve I2 provided with a dependent flange i3 serving for preventing the access of rain water.
  • the tube l which is made of substantially larger diameter than the tube I, in addition constitutes a gas reservoir which permits of extending the operating period of the device at operating pressures low enough for yield ing an adequate luminous output; the volume of this reservoir is adapted to the life which it is desired that the device should have.
  • a gaseous electric discharge lamp comprising an elongated container, electrodes sealed therein adjacent the ends thereof, a gaseous atmosphere therein, one part of said container being of larger diameter than another part there- 01, both of said container parts surrounding the discharge path between said electrodes, said part of larger diameter constituting a gas reservoir for said lamp and serving as a support for said part of smaller diameter, said part of smaller diameter being helical in shape and surrounding said part of larger diameter, an axial extension on said part of larger diameter, said extension being of smaller diameter than said part of larger diameter, said container part 01' smaller diameter being joined to the midportion of said extension the projecting part of said extension being a support for said lamp.
  • An electric lamp comprising, in combination, a vitreous Jacket and a gaseous electric discharge device mounted in said jacket, said discharge device comprising an elongated container, electrodes sealed therein, a gaseous atmosphere therein, one part of said container being of larger diameter than another part thereof, both of said container parts surrounding the discharge path between said electrodes, said part of larger diameter constituting a gas reservoir for said device and serving as a support for said part of smaller diameter, said part of smaller diameter surrounding said part of larger diameter, an axial extension on said part of larger diameter, said

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
US273094A 1938-05-19 1939-05-11 Electric lamp Expired - Lifetime US2272513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR741964X 1938-05-19

Publications (1)

Publication Number Publication Date
US2272513A true US2272513A (en) 1942-02-10

Family

ID=9139727

Family Applications (1)

Application Number Title Priority Date Filing Date
US273094A Expired - Lifetime US2272513A (en) 1938-05-19 1939-05-11 Electric lamp

Country Status (6)

Country Link
US (1) US2272513A (enrdf_load_html_response)
BE (1) BE433935A (enrdf_load_html_response)
CH (1) CH216060A (enrdf_load_html_response)
DE (1) DE741964C (enrdf_load_html_response)
FR (1) FR846350A (enrdf_load_html_response)
GB (1) GB525943A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501375A (en) * 1944-12-21 1950-03-21 Gen Electric Electric discharge lamp
US2506690A (en) * 1947-06-17 1950-05-09 John I Stein Incandescent vapor tube stove
US2691120A (en) * 1948-10-28 1954-10-05 Raymond H Barber Ionizing flash lamp

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682621A (en) * 1948-12-31 1954-06-29 Sylvania Electric Prod Gaseous discharge tube
US4300073A (en) * 1979-02-13 1981-11-10 Westinghouse Electric Corp. Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp
JPS61133551A (ja) * 1984-12-03 1986-06-20 Matsushita Electric Works Ltd 螢光ランプ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1886326A (en) * 1930-02-05 1932-11-01 Connecticut Telephone & Elec Gas signal light apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501375A (en) * 1944-12-21 1950-03-21 Gen Electric Electric discharge lamp
US2506690A (en) * 1947-06-17 1950-05-09 John I Stein Incandescent vapor tube stove
US2691120A (en) * 1948-10-28 1954-10-05 Raymond H Barber Ionizing flash lamp

Also Published As

Publication number Publication date
FR846350A (fr) 1939-09-14
BE433935A (enrdf_load_html_response)
CH216060A (fr) 1941-07-31
DE741964C (de) 1943-11-19
GB525943A (en) 1940-09-06

Similar Documents

Publication Publication Date Title
US2272513A (en) Electric lamp
ES2079779T3 (es) Bombilla de descarga de baja presion sin electrodos.
US2201390A (en) Fluorescent lamp
US2152994A (en) Gaseous electric discharge lamp device
US2865186A (en) High-intensity photoflash lamp
US2212879A (en) Electric discharge lamp
US1951137A (en) Gaseous electric discharge device
US2137732A (en) Electric incandescent high pressure gas lamp and similar article
US2421571A (en) Fluorescent glow lamp
US1961719A (en) Gaseous electric discharge device
US2009215A (en) Electric discharge device
US2156068A (en) Gaseous electric discharge lamp
US2103028A (en) Electric conduction device
GB523538A (en) Improvements in incandescent electric lamps
US2056631A (en) Gaseous electric discharge lamp device
US2468221A (en) Electrode
US1880949A (en) Gaseous electric discharge device
US2030450A (en) Electric gaseous discharge device
GB1230955A (enrdf_load_html_response)
US4644216A (en) High-pressure discharge lamp
US2135691A (en) Gaseous electric discharge device
US1740030A (en) Mercury lamp
US1984427A (en) Gaseous electric discharge device
US2018347A (en) Electric rare gas filled lamp
US985486A (en) Electric-lighting apparatus.