EP0066495A2 - In zwei Ebenen gebeugte Entladungslampe mit kalter Kathode - Google Patents

In zwei Ebenen gebeugte Entladungslampe mit kalter Kathode Download PDF

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Publication number
EP0066495A2
EP0066495A2 EP82400898A EP82400898A EP0066495A2 EP 0066495 A2 EP0066495 A2 EP 0066495A2 EP 82400898 A EP82400898 A EP 82400898A EP 82400898 A EP82400898 A EP 82400898A EP 0066495 A2 EP0066495 A2 EP 0066495A2
Authority
EP
European Patent Office
Prior art keywords
tube
bent
discharge lamp
lamp
cold
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.)
Granted
Application number
EP82400898A
Other languages
English (en)
French (fr)
Other versions
EP0066495B1 (de
EP0066495A3 (en
Inventor
Raymond Desplat
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
Priority to AT82400898T priority Critical patent/ATE21187T1/de
Publication of EP0066495A2 publication Critical patent/EP0066495A2/de
Publication of EP0066495A3 publication Critical patent/EP0066495A3/fr
Application granted granted Critical
Publication of EP0066495B1 publication Critical patent/EP0066495B1/de
Expired 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
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/16—Vessels; Containers

Definitions

  • the present invention relates to a discharge lamp known as a cold cathode tube, with gas filling of the type consisting of a small diameter tube comprising at its two ends electrodes between which the high voltage discharge occurs.
  • Tubes of this kind are currently used routinely for the production of letters for illuminated signs and their use is tending to develop also as light sources for various traffic lights. Indeed, these high-voltage tubes have greater reliability than the incandescent lamps usually used in said signaling lights and a much longer service life.
  • these tubes have other advantages such as an excellent yield in coloring and in brightness and the absence of focusing optics.
  • the tube is shaped for its useful front part in the form of a meander or a spiral in a plane and the end bulbs containing the electrodes are bent behind the end of the useful front part of the tube.
  • the tubes being bent in a meander or wound in a spiral according to a ply in a plane and the manufacturing techniques obliging, in the case of a meander in particular, to maintain a minimum radius of curvature of the tube which is hardly less than half the diameter, the parallel branches of the meander are spaced at least half a diameter and most often the diameter, this spacing is also necessary for cooling.
  • the length of tube which can be accommodated in a given lamp surface is reduced and that miniaturized discharge lamps have a reduced lifetime compared to that of very long tubes. This problem is encountered in the case of miniaturized discharge lamps for repeating lights and so-called pedestrian lights, signaling lights as well as for various special purpose lamps.
  • the object of the present invention is to remedy these drawbacks and it relates to a discharge lamp of the cold cathode tube type, characterized in that the tube of circular section is, between the two electrodes, bent or curved according to two layers located in two close parallel planes, the layout of the tube in one layer being intercalated with the layout of the tube in the other layer.
  • the layout of the tube in a sheet is sufficiently dense, the observer placed substantially on a perpendicular to the planes of the sheets making up the lamp will simultaneously see the two lines of the tube in the two sheets. , which will give a uniform brightness over the entire surface occupied by the lamp.
  • the length of the tube being substantially equal to twice the length of the tube in a single ply of equivalent lamp surface, the life of the lamp is increased.
  • the second ply of the tube is substantially in the same plane as said bulbs so that the overall thickness of the lamp is not substantially amended.
  • the tube can be bent or bent in double meander or in double spiral but it is preferable in the case of a rectangular surface lamp to bend it in a flattened serpentine, the straight lengths of the tube joined by elbows in the oblique planes being alternately located in the front and in the rear.
  • the reference designates it the tube in the upper ply and the reference 1b the tube in the lower ply, 2 the bent parts joining parts of the tube lying in the two plies, 3a and 3b the bent parts joining parts of tube respectively located both in the upper layer and both in the lower layer and 4 designates the bulbs containing the electrodes.
  • lengths of tube 1a and 1b arranged in the two upper and lower plies succeed each other by being joined by bent portions 2, the bulbs 4 being placed at the two ends of the surface.
  • the lengths of tube 1a joined by bent parts 3a follow one another in the upper ply, the length of tube 1a lying on one edge of the ply being joined to the neighboring length 1b in the other ply by a bent part 2, said length lb being joined to the other lengths 1b of the lower ply by bent parts 3b.
  • the two bulbs 4 are located on the same side of the surface of the lamp.
  • the tube parts la and 3b are bent in a spiral and joined in the center by a bent part 2.
  • the bulbs 4 are placed at the free ends of the tube.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
EP82400898A 1981-05-26 1982-05-14 In zwei Ebenen gebeugte Entladungslampe mit kalter Kathode Expired EP0066495B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400898T ATE21187T1 (de) 1981-05-26 1982-05-14 In zwei ebenen gebeugte entladungslampe mit kalter kathode.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110419 1981-05-26
FR8110419A FR2507011A1 (fr) 1981-05-26 1981-05-26 Lampe a decharge du type tube a cathode froide courbe selon deux nappes

Publications (3)

Publication Number Publication Date
EP0066495A2 true EP0066495A2 (de) 1982-12-08
EP0066495A3 EP0066495A3 (en) 1983-08-03
EP0066495B1 EP0066495B1 (de) 1986-07-30

Family

ID=9258892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400898A Expired EP0066495B1 (de) 1981-05-26 1982-05-14 In zwei Ebenen gebeugte Entladungslampe mit kalter Kathode

Country Status (6)

Country Link
EP (1) EP0066495B1 (de)
AT (1) ATE21187T1 (de)
CA (1) CA1192597A (de)
DE (1) DE3272290D1 (de)
ES (1) ES272873Y (de)
FR (1) FR2507011A1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154405A (en) * 1984-01-10 1985-09-04 Thorn Emi Domestic Appliances Heating apparatus
US5536999A (en) * 1994-12-02 1996-07-16 Winsor Corporation Planar fluorescent lamp with extended discharge channel
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps
US5705883A (en) * 1995-03-31 1998-01-06 General Electric Company Reduced length compact fluorescent lamp and method of forming same
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp
WO2005038341A3 (en) * 2003-10-10 2007-01-25 Honeywell Int Inc Compact fluorescent lamps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473878A (en) * 1947-11-25 1949-06-21 Gen Electric Electric lamp of double spiral convolution
US2743388A (en) * 1953-09-08 1956-04-24 Samuel C Bartley Electric lamp
NL98672C (de) * 1958-09-05
FR1464022A (fr) * 1965-11-16 1966-07-22 Pat & Visseaux Claude Dispositif pour le balisage lumineux

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154405A (en) * 1984-01-10 1985-09-04 Thorn Emi Domestic Appliances Heating apparatus
US5536999A (en) * 1994-12-02 1996-07-16 Winsor Corporation Planar fluorescent lamp with extended discharge channel
US5818164A (en) * 1994-12-02 1998-10-06 Winsor Corporation Fluorescent lamp with electrode housing
US5705883A (en) * 1995-03-31 1998-01-06 General Electric Company Reduced length compact fluorescent lamp and method of forming same
EP0735567A3 (de) * 1995-03-31 1999-01-13 General Electric Company Entladungslampe
GB2310078B (en) * 1996-01-24 2000-10-18 Terence Milner Lighting device
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp
WO2005038341A3 (en) * 2003-10-10 2007-01-25 Honeywell Int Inc Compact fluorescent lamps

Also Published As

Publication number Publication date
ATE21187T1 (de) 1986-08-15
ES272873U (es) 1983-11-01
FR2507011B1 (de) 1985-05-03
ES272873Y (es) 1984-04-16
FR2507011A1 (fr) 1982-12-03
EP0066495B1 (de) 1986-07-30
DE3272290D1 (en) 1986-09-04
EP0066495A3 (en) 1983-08-03
CA1192597A (en) 1985-08-27

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