SE9300163L - compact fluorescent lamps - Google Patents

compact fluorescent lamps

Info

Publication number
SE9300163L
SE9300163L SE9300163A SE9300163A SE9300163L SE 9300163 L SE9300163 L SE 9300163L SE 9300163 A SE9300163 A SE 9300163A SE 9300163 A SE9300163 A SE 9300163A SE 9300163 L SE9300163 L SE 9300163L
Authority
SE
Sweden
Prior art keywords
tubular legs
cross
bridging
legs
sectional area
Prior art date
Application number
SE9300163A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9300163D0 (en
Inventor
Torsten Axelsson
Original Assignee
Lumalampan Ab
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 Lumalampan Ab filed Critical Lumalampan Ab
Priority to SE9300163A priority Critical patent/SE9300163L/en
Publication of SE9300163D0 publication Critical patent/SE9300163D0/en
Priority to EP94850009A priority patent/EP0608205A1/en
Publication of SE9300163L publication Critical patent/SE9300163L/en

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
    • H01J61/30—Vessels; Containers
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
    • 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
    • H01J61/325—U-shaped lamps

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

A compact fluorescent tube comprises one or more U-shaped main parts (14) which together form a closed discharge chamber (28), which is coated internally with fluorescent material (18) and is provided with electrodes (16) at each end thereof. Each main part includes two straight and parallel tubular legs (19) of circular cross-section and a bridging or connecting tube (20) provided at one end of the tubular legs. At the junction with respective straight tubular legs, the bridging tube forms corner regions (24) whose cross-sectional area (A) is greater than the cross-sectional area of remaining parts of the bridging tube and of the straight tubular legs. The bridging tube (20) is slightly arcuate between the corner regions (24). The cross-section at the apex (27) centrally between the corner regions has an area (B) which is smaller than the cross-sectional area (C) of each of the straight tubular legs (19). A keyhole-shaped bending centre (21) is formed between the tubular legs (19), the diameter (d) of this bending centre in the circular-arcuate part being greater than the distance (e) between the legs. <IMAGE>
SE9300163A 1993-01-20 1993-01-20 compact fluorescent lamps SE9300163L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9300163A SE9300163L (en) 1993-01-20 1993-01-20 compact fluorescent lamps
EP94850009A EP0608205A1 (en) 1993-01-20 1994-01-17 Compact fluorescent tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9300163A SE9300163L (en) 1993-01-20 1993-01-20 compact fluorescent lamps

Publications (2)

Publication Number Publication Date
SE9300163D0 SE9300163D0 (en) 1993-01-20
SE9300163L true SE9300163L (en) 1994-07-21

Family

ID=20388606

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9300163A SE9300163L (en) 1993-01-20 1993-01-20 compact fluorescent lamps

Country Status (2)

Country Link
EP (1) EP0608205A1 (en)
SE (1) SE9300163L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU218642B (en) * 1996-12-30 2000-10-28 General Electric Co Single ended discharge lamp
DE60043132D1 (en) * 1999-05-19 2009-11-26 Panasonic Corp U-shaped low-pressure mercury vapor discharge lamp and manufacturing method for such a lamp
US7042147B2 (en) * 2002-08-27 2006-05-09 Lcd Lighting, Inc. Serpentine fluorescent lamp with shaped corners providing uniform backlight illumination for displays

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232550A (en) * 1985-04-08 1986-10-16 Mitsubishi Electric Corp Low pressure mercury vapor discharge lamp
JPH0746598B2 (en) * 1986-05-29 1995-05-17 東芝ライテック株式会社 Fluorescent lamp
JPH083997B2 (en) * 1988-12-12 1996-01-17 東芝ライテック株式会社 Low pressure mercury vapor discharge lamp
DE9207139U1 (en) * 1992-05-26 1992-07-16 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De

Also Published As

Publication number Publication date
SE9300163D0 (en) 1993-01-20
EP0608205A1 (en) 1994-07-27

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