EP0481409A1 - Elément de commutation pour lampes fluorescentes - Google Patents

Elément de commutation pour lampes fluorescentes Download PDF

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Publication number
EP0481409A1
EP0481409A1 EP91117505A EP91117505A EP0481409A1 EP 0481409 A1 EP0481409 A1 EP 0481409A1 EP 91117505 A EP91117505 A EP 91117505A EP 91117505 A EP91117505 A EP 91117505A EP 0481409 A1 EP0481409 A1 EP 0481409A1
Authority
EP
European Patent Office
Prior art keywords
switching unit
printed circuit
base
walls
cover
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Withdrawn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
EP91117505A
Other languages
German (de)
English (en)
Inventor
Paolo Marino
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.)
ITALFARAD SpA
Original Assignee
ITALFARAD SpA
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 ITALFARAD SpA filed Critical ITALFARAD SpA
Publication of EP0481409A1 publication Critical patent/EP0481409A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details

Definitions

  • the present invention relates to a power supply and switching unit for fluorescent lamps.
  • the power supply and switching unit is constituted by separate electric components which are conveniently connected to one another by means of wires which lead to two terminal strips for connection to the power supply line and to the fluorescent lamp respectively.
  • the components which form the circuit of the power supply and switching unit are essentially constituted by a ballast and by a starter; a capacitor is usually connected to said circuit, performs power factor correction for the device and can contain, inside it, a discharge resistor and an anti-explosion device, both of which are prescribed by the applicable statutory provisions.
  • the entire circuit is very often protected by a fuse.
  • the circuit sometimes furthermore comprises one or more filters for eliminating conducted noise.
  • the amplitude of the noise produced by the lighting device in fact depends on its technical characteristics which, in some cases, require filtering in order to prevent the noise from propagating to neighboring appliances (personal computers, television sets, etc.), which would compromise their operation.
  • the electric components are arranged inside the lighting device according to an arrangement which depends upon the space available and which depends upon the need to provide the connections, which are usually performed according to empirical criteria according to the contingent situations. This requires a considerable time consuming effort on the part of the assemblers of the lighting device.
  • the technical aim of the present invention is to provide a power supply and switching unit which can obviate the disadvantages which are present in conventional ones by allowing considerable simplification as regards both the acquisition of components and the wiring and assembly steps.
  • a power supply and switching unit which is characterized in that it comprises a casing composed of a base, which is provided with means for fixing to a support, and of a cover which can be associated with said base so as to define a containment compartment, a printed circuit being installed in said compartment, the components which constitute the electric circuit of the switching unit being arranged on said printed circuit, said circuit being connectable to the fluorescent lamp and to the power supply by means of terminal strips fixed to said printed circuit.
  • the power supply and switching unit hereinafter termed simply switching unit, comprises a casing which is generally indicated by the reference numeral 1, which includes a base 2 and a cover 3.
  • the base 2 and the cover 3 are preferably made of metal plate, although it is possible to conceive an execution by molding plastic material.
  • the base 2 comprises a rectangular bottom 4, from the longitudinal edges of which two walls 5, 6 rise perpendicularly.
  • the walls 5, 6 are shorter in longitudinal extension than the bottom 4, so that two ledges 7, 8 are defined at the ends of said bottom and are blended to the walls by triangular ridges 9; slots 10 are defined in said ledges for the passage of fixing screws.
  • the bottom 4 has recesses which, inside the base, define protrusions 11.
  • the board 12 of a printed circuit is arranged on the protrusions 11 and is retained in place by teeth 13, defined by punching and riveting the walls 5 and 6, which extend inward and engage the lateral edges of the board 12.
  • the electric components of the switching unit are anchored on the board 12 and are mutually connected by the printed circuit according to known technologies which are therefore not described hereinafter.
  • a layer 14 of electrically insulating material is interposed between the latter and the board 12.
  • the electric components of the switching unit comprise noise-reduction capacitors 15, a power factor correction capacitor 16, a ballast 17, a starter 18, a fuse 19 for protecting said capacitor, line fuses 20, a discharge resistor 21 for the capacitor and a pair of terminal strips 22, 23 which are fixed at the opposite ends of the board 12 and protrude partially onto the ledges 7, 8 of the base.
  • the arrangement of the electric components can naturally vary as required, according to the dimensional characteristics thereof, without altering the concept that their height must not exceed, in assembled condition, that of the walls 5 and 6, so as to allow to apply the cover 3.
  • An opening 24 is in any case provided on the cover 3, and the starter 18 can protrude outward therefrom to allow its removal without having to open the cover if the need to replace it arises.
  • the cover 3 is fixed to the base 2 by providing, along the longitudinal edges of said cover, two wings 25, 26 in which teeth 27 are provided; said teeth are riveted inward so as to engage holes 28 defined in the walls 5 and 6 when the cover is applied so as to cover the components.
  • the ends of the cover 3 are furthermore folded so as to form two head walls 29 and 30 which are higher than the wings 25 and 26 and have, at their protruding edge, recesses 31 to allow the engagement of the terminal strips 22 and 23 and the closure of the casing.
  • terminal strips 22 and 23 remain in any case accessible from the outside to allow the connection of the switching unit to the power supply on one side and to the fluorescent lamp on the other.
  • said switching unit can be fixed to a wall or ceiling fixture or to another support by means of screws driven through the slots 10.
  • the present invention offers a further possibility of considerably reducing the total cost of the switching unit by virtue of the casing 1, which ensures the required mechanical and accident-prevention protections and can allow the use of components having no protective container.
  • the board of the printed circuit instead of being fixed onto the base, can equally be applied to the cover, so that if malfunctions occur, instead of replacing the entire switching unit, including the base, it is possible to confine oneself to the replacement of the cover only and of the components associated therewith, the base remaining rigidly associated with the support fixture.
  • the power supply and switching unit can be given dimensions suitable for the actuation of two lamps.
  • two starters 18 are provided and are accessible through respective openings of the cover for possible replacement.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP91117505A 1990-10-16 1991-10-14 Elément de commutation pour lampes fluorescentes Withdrawn EP0481409A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT491790 1990-10-16
IT491790U IT221361Z2 (it) 1990-10-16 1990-10-16 Accenditore per fluorescenti.

Publications (1)

Publication Number Publication Date
EP0481409A1 true EP0481409A1 (fr) 1992-04-22

Family

ID=11115994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91117505A Withdrawn EP0481409A1 (fr) 1990-10-16 1991-10-14 Elément de commutation pour lampes fluorescentes

Country Status (2)

Country Link
EP (1) EP0481409A1 (fr)
IT (1) IT221361Z2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807449A1 (de) * 1998-02-24 1999-09-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Vorschaltgerät für elektrische Lampen
US6215663B1 (en) 2000-03-16 2001-04-10 Philips Electronics North America Corporation Printed circuit board assembly with improved thermal performance
WO2005074342A2 (fr) * 2004-01-30 2005-08-11 Trilux-Lenze Gmbh + Co. Kg Boitier de ballast
DE102005016533A1 (de) * 2005-04-08 2006-10-12 Wago Verwaltungsgesellschaft Mbh Beleuchtungsanlage
CN101835319A (zh) * 2009-03-13 2010-09-15 奥斯兰姆有限公司 用于电子镇流器的外壳
WO2010111721A1 (fr) * 2009-03-30 2010-10-07 Tridonic Gmbh & Co Kg Moyen de fonctionnement avec plaque de refroidissement intégrée

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302017A (en) * 1966-02-23 1967-01-31 Westinghouse Electric Corp Luminaire ballast housing
US3851225A (en) * 1973-06-07 1974-11-26 Ltd Syst Inc Water resistant ballast construction
US4924152A (en) * 1988-06-13 1990-05-08 Jon Flickinger Thermoplastic ballast housing in a novel three-dimensional printed circuit board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302017A (en) * 1966-02-23 1967-01-31 Westinghouse Electric Corp Luminaire ballast housing
US3851225A (en) * 1973-06-07 1974-11-26 Ltd Syst Inc Water resistant ballast construction
US4924152A (en) * 1988-06-13 1990-05-08 Jon Flickinger Thermoplastic ballast housing in a novel three-dimensional printed circuit board

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807449A1 (de) * 1998-02-24 1999-09-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Vorschaltgerät für elektrische Lampen
US6215663B1 (en) 2000-03-16 2001-04-10 Philips Electronics North America Corporation Printed circuit board assembly with improved thermal performance
WO2005074342A2 (fr) * 2004-01-30 2005-08-11 Trilux-Lenze Gmbh + Co. Kg Boitier de ballast
WO2005074342A3 (fr) * 2004-01-30 2005-10-27 Trilux Lenze Gmbh & Co Kg Boitier de ballast
DE102005016533A1 (de) * 2005-04-08 2006-10-12 Wago Verwaltungsgesellschaft Mbh Beleuchtungsanlage
CN101835319A (zh) * 2009-03-13 2010-09-15 奥斯兰姆有限公司 用于电子镇流器的外壳
WO2010102894A1 (fr) * 2009-03-13 2010-09-16 Osram Gesellschaft mit beschränkter Haftung Boîtier pour ballast électronique
JP2012520555A (ja) * 2009-03-13 2012-09-06 オスラム アクチエンゲゼルシャフト 電子安定器用の筐体
CN101835319B (zh) * 2009-03-13 2014-05-07 奥斯兰姆有限公司 用于电子镇流器的外壳
US8861206B2 (en) 2009-03-13 2014-10-14 Osram Gesellschaft Mit Beschraenkter Haftung Casing for electronic ballast
WO2010111721A1 (fr) * 2009-03-30 2010-10-07 Tridonic Gmbh & Co Kg Moyen de fonctionnement avec plaque de refroidissement intégrée

Also Published As

Publication number Publication date
IT9004917U1 (it) 1992-04-17
IT221361Z2 (it) 1994-03-04
IT9004917V0 (it) 1990-10-16

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