GB1222626A - Flash lamps - Google Patents

Flash lamps

Info

Publication number
GB1222626A
GB1222626A GB49624/69A GB4962469A GB1222626A GB 1222626 A GB1222626 A GB 1222626A GB 49624/69 A GB49624/69 A GB 49624/69A GB 4962469 A GB4962469 A GB 4962469A GB 1222626 A GB1222626 A GB 1222626A
Authority
GB
United Kingdom
Prior art keywords
wires
wire
combustion
bulbs
bulb
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
GB49624/69A
Inventor
Kenji Ohmae
Namio Iwata
Osamu Nomura
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB1222626A publication Critical patent/GB1222626A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • G03B15/0457—Ignition mechanisms for sequential ignition of flash lamps
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0442—Constructional details of the flash apparatus; Arrangement of lamps, reflectors, or the like

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Glass Compositions (AREA)

Abstract

1,222,626. Flashbulbs. TOKYO SHIBAURA ELECTRIC CO. Ltd. Oct.9, 1969 [Oct. 9, 1968; Aug.25, 1969], No.49624/69. Headings G2A and G2L. A flashbulb having an internal volume of not more than 2.0 cc and containing combustible material 21 and a combustion-supporting gas in an amount equal to 100% to 130% by weight of the chemical equivalent necessary for the combustion of the material 21 has a pair of main lead-in wires 25, 26 connected by an ignition filament 29 and an auxiliary lead-in wire 27 disposed parallel to the main lead-in wire 26, the wire 26 having a diameter in the range of 0À2 mm to 0.6 mm and the spacing between the wires 26 and 27 being not greater than 75% of the diameter of the wire 26. When the bulb is fired the wires 26, 27 undergo partial combustion and fuse together to complete a circuit through which a second bulb can subsequently be fired. A recess 30 may be provided in the glass bead 28 which supports the wires to receive the molten metal. A plurality of such bulbs may be mounted in a holder 40, Fig. 6 (not shown) comprising a supporting member (42) formed with recesses (43) which receive the bulbs and contain aluminium-vapour-deposited reflectors (44).
GB49624/69A 1968-10-09 1969-10-09 Flash lamps Expired GB1222626A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7334768 1968-10-09
JP8012569 1969-08-25

Publications (1)

Publication Number Publication Date
GB1222626A true GB1222626A (en) 1971-02-17

Family

ID=26414503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49624/69A Expired GB1222626A (en) 1968-10-09 1969-10-09 Flash lamps

Country Status (3)

Country Link
US (1) US3598511A (en)
FR (1) FR2020263A1 (en)
GB (1) GB1222626A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009987A (en) * 1973-05-01 1977-03-01 U.S. Philips Corporation Electric lamp having an internal switching mechanism
CA1044909A (en) * 1974-09-25 1978-12-26 Donald E. Armstrong Photoflash lamp
US4329140A (en) * 1979-07-19 1982-05-11 Polaroid Corporation Multiple flash arrangement with redundant fuse arrangement
JP5189211B2 (en) * 2010-07-20 2013-04-24 パナソニック株式会社 Light bulb shaped lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045460A (en) * 1960-04-27 1962-07-24 Sylvania Electric Prod Photoflash lamp
DE1296520B (en) * 1965-07-30 1969-05-29 Agfa Gevaert Ag Multiple flash device

Also Published As

Publication number Publication date
US3598511A (en) 1971-08-10
DE1950896A1 (en) 1970-04-16
DE1950896B2 (en) 1977-04-28
FR2020263A1 (en) 1970-07-10

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