EP1051060A1 - Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften - Google Patents

Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften Download PDF

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Publication number
EP1051060A1
EP1051060A1 EP99830279A EP99830279A EP1051060A1 EP 1051060 A1 EP1051060 A1 EP 1051060A1 EP 99830279 A EP99830279 A EP 99830279A EP 99830279 A EP99830279 A EP 99830279A EP 1051060 A1 EP1051060 A1 EP 1051060A1
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EP
European Patent Office
Prior art keywords
lamps
capacitor
terminal
resistor
rectifier bridge
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Withdrawn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
EP99830279A
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English (en)
French (fr)
Inventor
Yousef Husni Barikhan
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP99830279A priority Critical patent/EP1051060A1/de
Publication of EP1051060A1 publication Critical patent/EP1051060A1/de
Withdrawn legal-status Critical Current

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    • 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
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
    • H05B41/046—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes using controlled semiconductor devices

Definitions

  • the present invention relates to an electronic starting device for fluorescent, high-pressure discharge lamps and the like having improved characteristics.
  • the invention relates to an automatic starting device for fluorescent lamps and for high-pressure lamps and the like of any power level.
  • the starter is arranged downstream of a ballast which is connected to the mains voltage and to a pin of the lamp to be lit and allows to feed from the ballast to the filaments of the lamp an overvoltage which is capable of gradually starting the discharge in the fluorescent lamp (for example a neon tube) in order to light it.
  • a ballast which is connected to the mains voltage and to a pin of the lamp to be lit and allows to feed from the ballast to the filaments of the lamp an overvoltage which is capable of gradually starting the discharge in the fluorescent lamp (for example a neon tube) in order to light it.
  • the starter switches off and remains inactive throughout the time during which the lamp is normally lit.
  • Conventional lighting devices generally use a glow-discharge starter or a thermal starter or an electronic starter.
  • ballasts in order to light a fluorescent lamp it is necessary to provide a suitable ballast and a starter for each lamp. If one wishes to light two or more lamps arranged in series, it is therefore necessary to provide an equal number of ballasts in addition to corresponding lighting devices.
  • the aim of the present invention is to provide a lighting device for fluorescent lamps and the like which allows to resort to a single starter to light a plurality of fluorescent lamps arranged mutually in series.
  • an object of the present invention is to provide a lighting device for fluorescent lamps and the like which allows substantially instantaneous lighting of the series-connected fluorescent lamps.
  • Another object of the present invention is to provide a lighting device for fluorescent lamps and the like which not only allows to light the lamps (even low-pressure lamps) substantially instantaneously but also allows to preserve the durability of said lamps and of the ballast for long periods.
  • Another object of the present invention is to provide a lighting device for fluorescent lamps and the like which further allows to extend the life of the ballast with respect to what occurs in conventional lighting devices.
  • Another object of the present invention is to provide a lighting device for fluorescent lamps and the like which is highly reliable, relatively easy to produce and at competitive costs.
  • an electronic starting device for fluorescent discharge lamps, high-pressure lamps and the like which is meant to be connected downstream of at least one discharge lamp which is connected to the AC supply mains by means of a ballast, characterized in that it comprises a rectifier bridge which is connected to first pins of said at least one lamp, a Zener diode and a first resistor which are series-connected to said rectifier bridge, and a circuit portion which is constituted by a first capacitor and a second capacitor to which a second resistor and a third resistor are respectively parallel-connected, a diac which is series-connected to said second capacitor, and a third capacitor to which a fourth resistor is parallel-connected, switching means being provided which are connected to said circuit portion and to said rectifier bridge, said switching means being connected to said diac by means of a first terminal, to said first capacitor by means of a second terminal and to said rectifier bridge by means of a third terminal, said third capacitor and said fourth resistor being connected between said
  • the starting device according to the present invention is parallel-connected to one or more fluorescent lamps or high-pressure lamps and the like 2, which are mutually series-connected.
  • the lamps 2 are connected to the supply mains by means of a ballast 3.
  • the starting device comprises a starter, generally designated by the reference numeral 4, which is connected in parallel to the lamps 2 to be lit.
  • the device according to the invention provides for the lighting of at least one lamp 2 by means of the starter 4, which comprises a diode rectifier bridge 5 which is connected to a pin of the lamps 2; a Zener diode 6 is connected to the positive terminal of said bridge and is provided with a first series-connected resistor 7.
  • a first capacitor 8 is series-connected to the first resistor 7 and has a second resistor 9 parallel-connected thereto.
  • the first capacitor 8 is connected to switching means which are preferably constituted by a bipolar transistor 10 or by an IGBT.
  • the capacitor 8 (with the parallel-connected resistor 9) is connected to the emitter terminal of the transistor.
  • the following components are connected to the base terminal of the transistor 10: a second capacitor 11, with a third resistor 12 parallel-connected thereto; a diac 13, which is series-connected to the capacitor 11; and a third capacitor 14, which is parallel-connected to the diac 13 and has a fourth resistor 15 parallel-connected thereto.
  • the capacitor 14 is therefore connected between the base terminal and the emitter terminal of the transistor 10, in which the collector terminal is connected to the positive node of the diode bridge 5 and the emitter terminal is connected to the negative node of the diode bridge.
  • lamps 2 are mutually series-connected by means of a single pin, whereas the other pin of the lamps is connected to the diode bridge 5.
  • first, second and third capacitors 8, 11 and 14 respectively allows the device according to the invention to light the fluorescent lamps 2 instantaneously (in less than two seconds).
  • the starting of the lamps 2 is activated progressively, first on one lamp and then on the other.
  • the switching of the switching means 10 at a high frequency (35 kHz or higher) causes an interruption of the current in the ballast 3, producing successive short high-voltage fronts (1.2 kV or more) which first heat the filaments of the fluorescent lamps 2 and then light in succession the two lamps as the starting conditions become increasingly favorable due to the progressive heating of the filaments (cathodes) of the lamps.
  • the capacitor 14 allows to eliminate radio reception noise.
  • another capacitor 20 is provided which is arranged in parallel to each one of the lamps 2 ( Figure 2).
  • IGBTs 10 are used with more than two lamps, it is necessary to use capacitors 20 in parallel to said lamps.
  • Figure 2 is a detail view of the connection of the capacitors 20 to one pin of the lamps 2, while the other pin is connected at one end to the starter 4 and provides the connection, at the other end, between the lamps 2 arranged in series.
  • the current that flows through the capacitors 20 allows to heat the filaments of the lamps 2 and therefore to light the two lamps in succession as the heating of said filaments gradually increases, accelerating their lighting with respect to conventional starting devices.
  • ballast of the electromechanical type, must of course be chosen with a power rating which is adequate for the power of the lamps to be lit.
  • the device further allows to avoid unpleasant flickering of the light and the blackening of the lamps proximate to the terminals.
  • the device according to the invention can also be provided with a conventional thermal protection if the lamps fail to light.
  • the device according to the invention fully achieves the intended aim and objects, since it allows to light substantially instantaneously a plurality of conventional lamps arranged mutually in series, using a single ballast and a single starter, protecting the durability of the lamps (and of the ballast), which is extended with respect to the life of lamps that use conventional lighting devices to start them.

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  • Circuit Arrangements For Discharge Lamps (AREA)
EP99830279A 1999-05-07 1999-05-07 Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften Withdrawn EP1051060A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99830279A EP1051060A1 (de) 1999-05-07 1999-05-07 Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99830279A EP1051060A1 (de) 1999-05-07 1999-05-07 Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften

Publications (1)

Publication Number Publication Date
EP1051060A1 true EP1051060A1 (de) 2000-11-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830279A Withdrawn EP1051060A1 (de) 1999-05-07 1999-05-07 Elektronische Schaltung zum Zünden von Leuchtstofflampen und Ähnlichen,mit verbesserten Eigenschaften

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EP (1) EP1051060A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2122411A1 (de) * 1971-05-06 1972-11-30 Bbc Brown Boveri & Cie Schaltungsanordnung zum Zünden, Steuern und Betrieb einer Gasentladungslampe
FR2138995A1 (de) * 1971-05-24 1973-01-05 Voegeli Ernst
EP0061796A1 (de) * 1981-03-23 1982-10-06 Koninklijke Philips Electronics N.V. Elektrisches Gerät mit mindestens einer Niederdruckquecksilberdampflampe
EP0249485A1 (de) * 1986-06-13 1987-12-16 Texas Instruments Incorporated Zündschaltung für eine Leuchtstofflampe
GB2201307A (en) * 1987-02-12 1988-08-24 David John Martin Electronic starter for discharge lamps
EP0759685A2 (de) * 1995-08-21 1997-02-26 Chung Woo Lee Schaltung zum Betreiben einer "Instant Type" Leuchtstofflampe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2122411A1 (de) * 1971-05-06 1972-11-30 Bbc Brown Boveri & Cie Schaltungsanordnung zum Zünden, Steuern und Betrieb einer Gasentladungslampe
FR2138995A1 (de) * 1971-05-24 1973-01-05 Voegeli Ernst
EP0061796A1 (de) * 1981-03-23 1982-10-06 Koninklijke Philips Electronics N.V. Elektrisches Gerät mit mindestens einer Niederdruckquecksilberdampflampe
EP0249485A1 (de) * 1986-06-13 1987-12-16 Texas Instruments Incorporated Zündschaltung für eine Leuchtstofflampe
GB2201307A (en) * 1987-02-12 1988-08-24 David John Martin Electronic starter for discharge lamps
EP0759685A2 (de) * 1995-08-21 1997-02-26 Chung Woo Lee Schaltung zum Betreiben einer "Instant Type" Leuchtstofflampe

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