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GB677044A - Improvements in and relating to electric discharge lamps - Google Patents

Improvements in and relating to electric discharge lamps

Info

Publication number
GB677044A
GB677044A GB23568/50A GB2356850A GB677044A GB 677044 A GB677044 A GB 677044A GB 23568/50 A GB23568/50 A GB 23568/50A GB 2356850 A GB2356850 A GB 2356850A GB 677044 A GB677044 A GB 677044A
Authority
GB
United Kingdom
Prior art keywords
wire
disc
supporting
lamp
leads
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
Application number
GB23568/50A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB677044A publication Critical patent/GB677044A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/80—Lamps suitable only for intermittent operation, e.g. flash lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
    • F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
    • F21K5/023—Ignition devices in photo flash bulbs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

677,044. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 26, 1950 [Oct. 19, 1949], No. 23568/50. Class 39 (i). [Also in Group XI] A U-shaped discharge lamp is supported by a stiff wire 10 extending between the two limbs of the lamp, and to which is attached a double clamp 17 supporting the ends of the limbs adjacent to the electrodes, and a further clamp 16 supporting the envelope at the bend; this supporting structure may act as a triggering electrode, and may be supplemented by a fine wire 24 wound round the tube and in electrical contact with the clamps. The electrode in-leads 4 and 5 are attached to lead wires 20, 21 which are secured to an insulating disc 6, as is also support wire 10; contact pins under the disc, as at 19, enable the entire unit to be readily plugged into a power source. The lower part of wire 10 and the leads 20, 21 are offset in opposite directions so as to obtain the widest spacing. The lamp described is of the flash-tube type, with a filling of xenon at 300 mm. pressure. A parabolic reflector may also be mounted on the disc 6, as in Fig. 2 (not shown).
GB23568/50A 1949-10-19 1950-09-26 Improvements in and relating to electric discharge lamps Expired GB677044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US122232A US2624023A (en) 1949-10-19 1949-10-19 Lamp unit

Publications (1)

Publication Number Publication Date
GB677044A true GB677044A (en) 1952-08-06

Family

ID=22401485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23568/50A Expired GB677044A (en) 1949-10-19 1950-09-26 Improvements in and relating to electric discharge lamps

Country Status (3)

Country Link
US (1) US2624023A (en)
FR (1) FR1025823A (en)
GB (1) GB677044A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011520B (en) * 1953-05-28 1957-07-04 Vakuumtechnik G M B H Flash tubes designed as a helical spiral with a wire-shaped ignition electrode wound along the helical spiral onto the discharge tube
DE1128560B (en) * 1960-05-23 1962-04-26 Deutsche Bundespost Arrangement on gas discharge lamps
DE3312506A1 (en) * 1982-04-15 1983-10-27 General Electric Co., Schenectady, N.Y. DISCHARGE LAMP WITH START-UP AID

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831152A (en) * 1952-05-31 1958-04-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electronic flash lamps
NL93096C (en) * 1953-04-08
US2825795A (en) * 1953-11-25 1958-03-04 Andrew F Henninger Flashtube mounting structure
US3851201A (en) * 1973-05-29 1974-11-26 Xerox Corp Lamp assembly
US4010397A (en) * 1975-10-30 1977-03-01 Hughes Aircraft Company Flashlamp triggering arrangements for pressurized gas cooled lasers
US4321502A (en) * 1979-12-03 1982-03-23 General Electric Company U-Shaped discharge lamp with starting strip
US4342940A (en) * 1980-02-04 1982-08-03 Xerox Corporation Triggering device for a flash lamp
US4745343A (en) * 1980-07-02 1988-05-17 Beggs William C Panoramic optical system with very sharp beam control
JPS57182905A (en) * 1981-04-13 1982-11-11 Gen Electric U-shaped discharge lamp
FR2573581B1 (en) * 1984-11-16 1986-12-26 Lemasson Guy IMPROVED SOCKET FOR LIGHT TUBE AND SIGNALING PROJECTOR HAVING THE SAME
DE8701119U1 (en) * 1987-01-23 1988-05-19 Heimann GmbH, 65205 Wiesbaden Discharge lamp, especially flash tube
US4967057A (en) * 1988-08-02 1990-10-30 Bayless Ronald E Snow melting heater mats

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR747940A (en) * 1932-02-22 1933-06-26 Osa Participations Ind Electric discharge lamp
US2171580A (en) * 1936-12-08 1939-09-05 Macksoud Patents Inc Electric lamp
US2264092A (en) * 1939-01-27 1941-11-25 Joseph F Frese Animated electrical discharge device
US2277697A (en) * 1939-01-31 1942-03-31 Grier Herbert Earle Electric system and apparatus
US2399222A (en) * 1941-11-08 1946-04-30 Germeshausen Kenneth Joseph Flash-photography apparatus
US2491881A (en) * 1944-02-26 1949-12-20 Gen Electric Darkroom lamp
US2467472A (en) * 1947-02-26 1949-04-19 Automatic Electrical Devices C Gaseous tube flasher circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011520B (en) * 1953-05-28 1957-07-04 Vakuumtechnik G M B H Flash tubes designed as a helical spiral with a wire-shaped ignition electrode wound along the helical spiral onto the discharge tube
DE1128560B (en) * 1960-05-23 1962-04-26 Deutsche Bundespost Arrangement on gas discharge lamps
DE3312506A1 (en) * 1982-04-15 1983-10-27 General Electric Co., Schenectady, N.Y. DISCHARGE LAMP WITH START-UP AID

Also Published As

Publication number Publication date
US2624023A (en) 1952-12-30
FR1025823A (en) 1953-04-20

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