EP0204789A1 - Leuchtstoffröhre mit zentralisierten funktionen - Google Patents

Leuchtstoffröhre mit zentralisierten funktionen

Info

Publication number
EP0204789A1
EP0204789A1 EP86900156A EP86900156A EP0204789A1 EP 0204789 A1 EP0204789 A1 EP 0204789A1 EP 86900156 A EP86900156 A EP 86900156A EP 86900156 A EP86900156 A EP 86900156A EP 0204789 A1 EP0204789 A1 EP 0204789A1
Authority
EP
European Patent Office
Prior art keywords
bulb
bulb according
tube
housings
molded
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.)
Withdrawn
Application number
EP86900156A
Other languages
English (en)
French (fr)
Inventor
Pierre Alain Dumas
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.)
Individual
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
Publication of EP0204789A1 publication Critical patent/EP0204789A1/de
Withdrawn legal-status Critical Current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
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/10—Shields, screens, or guides for influencing the discharge
    • H01J61/103—Shields, screens or guides arranged to extend the discharge path
    • 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

Definitions

  • the present invention relates to an electric light bulb, of the fluorescent lamp type, with low pressure hot cathodes and luminescent solid, with base and with centralized functions, namely:
  • the bulb consisting of a tube (12) of special glass, or other shape or other material, is delimited at one end by a round or flat bottom (15), and at the other, by two molded parts (1, 2) hollow and of equal dimensions, of frustoconical shape, and connected to the tube (10) by their base, which being arranged, (14), allows the installation of a queusot (3).
  • the molded parts or housings (1,2) have the function of individually housing each electrode-filament assembly (4,6) (5,7) which are arranged filament facing the inside of the tube, in the maximum space of the molded part.
  • a short glass-to-metal weld (20,21) at each end of the housings allows the filaments to be about seven millimeters from the inside edge of the straight tube (10) or the part separating the two housings. They are designed with a sufficient opening to allow the emission of electronic discharges in the mercury vapor, which then emits ultraviolet which excites the surface of fluorescent powder (12) stuck inside the tube.
  • the separate arrangement distinct from the two emitting filaments (6,7) but fairly close, reduces the priming difficulties, but whose housings avoid their mutual bombardment, source of degassing and slow destruction of the filaments, rare earths fixed on the filaments, and electrodes; the assemblies destroying themselves by volatilization, a provision which lengthens the lamp life accordingly.
  • the frustoconical shape allows each set to behave like an electron gun, projecting without receiving, and to sweep each wall of the tube, or the set made up and covered with fluorescent paste.
  • the tube is a discharge vessel.
  • the production of the assembly (1,3,2,20,21) means that it fits into the commercially available caps.
  • the tail welded directly or on its molding primer, allows in addition to its intended role when the pumping and sealing, the filling of the bulb in paste.
  • a hollow needle or drain with a diameter less than the free diameter of the socket is lowered to the bottom of the bulb (15), and fills it up to the level (14) separating the emitter assemblies.
  • a photoelectric cell or a probe set to this level (14) then stops filling, and reverses the operation by removing the bulb from the excess fluorescent paste, this operation being carried out with the bulb standing and at atmospheric pressure of so as not to flood and damage the transmitter assemblies locally protected from the rise of the liquid by air overpressure.
  • the bulb once coated with fluorescent paste, is gently heated and placed on a pump in order to destroy the binder of the paste.
  • the very good position of the queusot allows a short sealing between the molded parts, and the insertion of the assembly.
  • the electrodes are connected in their own circuit.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP86900156A 1984-12-12 1985-12-11 Leuchtstoffröhre mit zentralisierten funktionen Withdrawn EP0204789A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418968A FR2574593B1 (fr) 1984-12-12 1984-12-12 Ampoule fluorescente a culot, a fonctions centralisees
FR8418968 1984-12-12

Publications (1)

Publication Number Publication Date
EP0204789A1 true EP0204789A1 (de) 1986-12-17

Family

ID=9310508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900156A Withdrawn EP0204789A1 (de) 1984-12-12 1985-12-11 Leuchtstoffröhre mit zentralisierten funktionen

Country Status (5)

Country Link
EP (1) EP0204789A1 (de)
KR (1) KR880700447A (de)
AU (1) AU5234186A (de)
FR (1) FR2574593B1 (de)
WO (1) WO1986003619A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607321B1 (fr) * 1986-11-26 1990-07-20 Dumas Pierre Ampoule fluorescente a fonctions centralisees, a paroi centrale

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179606A (en) * 1938-03-24 1939-11-14 Hanovia Chemical & Mfg Co Metal vapor arc lamp
US4196374A (en) * 1978-12-14 1980-04-01 General Electric Company Compact fluorescent lamp and method of making
JPS5661755A (en) * 1979-10-24 1981-05-27 Stanley Electric Co Ltd Fluorescent lamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603619A1 *

Also Published As

Publication number Publication date
KR880700447A (ko) 1988-03-15
FR2574593A1 (fr) 1986-06-13
AU5234186A (en) 1986-07-01
FR2574593B1 (fr) 1986-12-26
WO1986003619A1 (fr) 1986-06-19

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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Effective date: 19870709

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Designated state(s): AT BE DE FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19890103