EP0069967A1 - Dispositif pour allumer des lampes fluorescentes - Google Patents

Dispositif pour allumer des lampes fluorescentes Download PDF

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Publication number
EP0069967A1
EP0069967A1 EP82106018A EP82106018A EP0069967A1 EP 0069967 A1 EP0069967 A1 EP 0069967A1 EP 82106018 A EP82106018 A EP 82106018A EP 82106018 A EP82106018 A EP 82106018A EP 0069967 A1 EP0069967 A1 EP 0069967A1
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EP
European Patent Office
Prior art keywords
voltage
thyristor
charging capacitor
fluorescent lamps
lamp
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
EP82106018A
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German (de)
English (en)
Other versions
EP0069967B1 (fr
Inventor
Harald Lück
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 AT82106018T priority Critical patent/ATE16673T1/de
Publication of EP0069967A1 publication Critical patent/EP0069967A1/fr
Application granted granted Critical
Publication of EP0069967B1 publication Critical patent/EP0069967B1/fr
Expired 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

Definitions

  • the invention relates to a device for starting fluorescent lamps, in particular difficult-to-ignite 26 mm fluorescent lamps, which in the middle region between their lamp electrodes are temporarily subjected to high voltage from the outside at least until the successful starting process with at least one of the lamp electrodes, with a charging circuit located between the operating voltage inputs.
  • Normal 38 mm fluorescent lamps can, for example, in a heating transformer circuit or in a Starter circuit ignited and operated. While 'in the heating transformer circuit the lamp electrodes are constantly flowed through by a heating current and thus ignition at mains voltage is possible, a voltage spike igniting the fluorescent lamp arises between the lamp electrodes in the starter circuit as a result of a current interruption. It has been shown that the much more energy-efficient new 26 mm fluorescent lamps can be ignited and operated with the usual starter circuit, but not with the heating transformer circuit.
  • this object is achieved by a discharge element which can be controlled with respect to the start and end of its operation.
  • the discharge element is preferably represented by a controllable valve with a control electrode, such as a thyristor. It is further preferred that the control electrode of the thyristor for igniting the same from a certain voltage on the charging capacitor biased accordingly and can be connected to suppress the thyristor ignition processes via a control element with the thyristor cathode.
  • a discharge circuit enables reliable discharge from a certain voltage on the charging capacitor and safe suppression of the discharge processes after the control element has responded.
  • control element is a photoresistor in light contact with the fluorescent lamp to be ignited.
  • photo resistors connected in series can also be provided, each of which is in light contact with one of several fluorescent lamps to be ignited. Since the control electrode of the thyristor is then only connected to its cathode when all the photoresistors are conductive, the high-voltage application is only interrupted after all fluorescent lamps in this group have been started.
  • the control element can be a timer.
  • This is preferably an electrical time switch which connects the thyristor control electrode to the thyristor cathode from the application of the operating voltage up to a first point in time and then releases it again from a second point in time.
  • the first and second instants are preferably adjustable.
  • Such a timer enables a versatile approach adaptation to the respective operating requirements and, for example, a time-delayed and time-limited application of high voltage. While the delay serves the purpose of only carrying out the high-voltage application when it is possible to ignite the fluorescent lamp after the lamp electrodes have been heated, the temporary high-voltage application should also switch off when the lamp has not been ignited for a long time.
  • the high-voltage application normally ends before the second point in time, namely immediately after the lamp has been ignited, and only at the second point in time in the event of a fault. This must be set so that it occurs after the time within which the ignition of intact fluorescent lamps normally takes place.
  • the high-voltage transformer can be designed as an autotransformer. Furthermore, the high-voltage transformer can be connected or connectable on the output side to a plurality of high-voltage electrodes for the same reason. Therefore, an entire group of fluorescent lamps to be lit at the same time can be started with the same device.
  • bypass capacitor connected in parallel with the operating inputs of the high-voltage generator for generating a heating current flowing through the lamp electrodes. This makes it possible to use the device even with conventional starter circuits and to connect it instead of the starter.
  • the bypass capacitor allows a constant heating current to flow through the lamp electrodes, so that problem-free ignition is possible.
  • a bridging resistor could also be used instead of the bridging capacitor, but this would have the disadvantage of generating heat loss or unnecessary energy consumption.
  • this change in state can optionally be used to put the high-voltage generator out of operation due to a voltage drop. In this case, there is no need for photo resistors and timers. The latter would only be required if delayed high voltage application is desired.
  • Figure 1 shows the device according to the invention.
  • a series circuit with a rectifier 34 in the form of a diode, a current limiting resistor 36, a charging capacitor 38 and a high-voltage transformer 40 In the present embodiment, the latter is an autotransformer, of which the series circuit serving as a charging circuit is a part detected.
  • a discharge circuit with a thyristor 42 is located parallel to the charging capacitor 38 and the high-voltage transformer 40.
  • a series circuit comprising a resistor 44, a zener diode 46 and a zener diode 48 connects the line between the current limiting resistor 36 and the charging capacitor 38 to the control electrode of the thyristor 42 Connection point 50 between the Zener diodes 46, 48 is connected via a photo resistor 52 to the cathode of the thyristor 42 or to the terminal 22.
  • the high-voltage transformer 40 is connected via the high-voltage line 24 to the high-voltage electrode 16 that at least partially encompasses the fluorescent lamp 10. If necessary, the high-voltage line 24 can be connected to further high-voltage electrodes 16 via a plurality of additional connections 56.
  • the high voltage generator 18 of Figure 1 operates as follows. After at the connections 20, 22 by closing the switch S from Figures 1, 2 Be drive voltage is present, there is a gradual charging of the charging capacitor 38 in the charging circuit. As soon as its voltage has risen to a threshold value influenced by the zener diodes 46, 48, the thyristor 42 is suddenly switched through. The sudden discharging of the charging capacitor 38 takes place at the output of the High voltage transformer 40 generation of high voltage peaks. After a sufficient drop in the voltage at the charging capacitor 38, the thyristor 42 is blocked again because the current limiting resistor 36 prevents the thyristor holding current from being exceeded.
  • the high-voltage generator 18 expediently contains a plurality of photo-resistors 52 connected in series, each of which is irradiated by one of the fluorescent lamps 10 and must all be activated before the High voltage loading is interrupted.
  • an electrical time switch 54 can be connected between the connection point 50 and the cathode of the thyristor 42 receives its supply voltage from the output of the rectifier 34.
  • This controllable time switch 54 may ensure that the Hochwoodsbeetzung in a certain way is delayed in time by carried out initially closing the Z eitschalters 54 and thus connecting the connection point 50 with the cathode of the thyristor 42nd High-voltage pulses can only be generated after the timer 54 has been opened.
  • This timer 54 can also be used to prevent high voltage exposure after a certain period of time, within which an intact fluorescent lamp 10 must have been ignited.
  • the high-voltage application can normally be switched off when the fluorescent lamp 10 is ignited via the photo resistor 52 and only then via the timer 54 if, for example, an ignition process cannot be achieved as a result of a defective fluorescent lamp 10.
  • a bridging capacitor 32 can also be placed between the connections 20, 22 in order to achieve the advantages explained in connection with the description of FIG. 2.
  • this bypass capacitor 32 it is possible to replace this bypass capacitor 32 with a resistor, which likewise allows a heating current to flow continuously through the lamp electrodes 12, 14.
  • the pulse diagram a from Figure 2 shows a case at between the initial time t o and the longest possible time t 3, a sequence of high-voltage pulses is generated, regardless of whether the fluorescent lamp has ignited or not.
  • the high-voltage application is delayed until time t 1 , the period between t 0 and t 1 being used to sufficiently heat the lamp electrodes 12, 14.
  • the high-voltage application delayed until time t 1 ends at time t 2 in the present case after two high-voltage pulses either by limiting this number or by switching off the high-voltage application by means of photo resistor 52 from FIG. 3. In the latter case can be switched off after a single high-voltage pulse.
  • the application of high voltage already begins at time t 0 and then ends as in case c.
  • the high-voltage electrode 16 in FIG. 1 is designed as an elastic retaining clip which is symmetrical with respect to its electrical connection and which partially surrounds the fluorescent lamp 10 in a ring-like manner. Such a high-voltage electrode 16 can have the disadvantage that it is visible during operation of the fluorescent lamp.

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  • Circuit Arrangements For Discharge Lamps (AREA)
EP82106018A 1981-07-15 1982-07-06 Dispositif pour allumer des lampes fluorescentes Expired EP0069967B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106018T ATE16673T1 (de) 1981-07-15 1982-07-06 Einrichtung zum starten von leuchtstofflampen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127876 1981-07-15
DE19813127876 DE3127876A1 (de) 1981-07-15 1981-07-15 Verfahren und einrichtung zum starten von leuchtstofflampen

Publications (2)

Publication Number Publication Date
EP0069967A1 true EP0069967A1 (fr) 1983-01-19
EP0069967B1 EP0069967B1 (fr) 1985-11-21

Family

ID=6136931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106018A Expired EP0069967B1 (fr) 1981-07-15 1982-07-06 Dispositif pour allumer des lampes fluorescentes

Country Status (4)

Country Link
EP (1) EP0069967B1 (fr)
JP (1) JPS5893197A (fr)
AT (1) ATE16673T1 (fr)
DE (2) DE3127876A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165758A (zh) * 2017-07-26 2017-09-15 重庆理工大学 一种强流脉冲电子束源光遥控点火驱动器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437514A1 (de) * 1984-10-12 1986-04-17 Siemens AG, 1000 Berlin und 8000 München Leuchte mit einer entladungslampe und einem elektronischen vorschaltgeraet
US4654562A (en) * 1984-12-21 1987-03-31 The Gerber Scientific Instrument Co. Flashing lamp unit
DE3642413A1 (de) * 1986-12-11 1988-06-23 Juerg Nigg Verfahren zur erhoehung der zuendwilligkeit von entladungslampen, zuendhilfeanordnung und entladungslampe mit zuendhilfe
DE9301794U1 (de) * 1993-02-09 1994-06-09 Mutzhas, Irmgard, 81479 München Niederspannungs-Leuchtröhre für Lichtwerbeanlagen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289118A (fr) * 1969-10-10 1972-09-13
DE2355201A1 (de) * 1973-11-05 1975-05-15 Hans Kreutzinger Vollelektronisches zuendgeraet fuer kaltstartleuchtstoffroehren insbesondere fuer 380 v-hochleistungsroehren
DE3107299A1 (de) * 1980-03-17 1981-12-10 Xerox Corp., 14644 Rochester, N.Y. Gluehlampenvorschaltung fuer eine leuchtstofflampe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR997513A (fr) * 1949-09-17 1952-01-07 Dispositif d'allumage pour tubes fluorescents
GB671444A (en) * 1949-11-01 1952-05-07 Ecko Ensign Electric Ltd Improvements in and relating to electric discharge lamps
GB685273A (en) * 1950-03-14 1952-12-31 British Thomson Houston Co Ltd Improvements in and relating to starting circuits for fluorescent lamps
DE1772583A1 (de) * 1968-06-06 1971-05-13 Ibm Deutschland Verfahren zur Herstellung eines holographischen Filters zur Vielfachabbildung eines Objektes und nach diesem Verfahren hergestelltes Filter
US3949267A (en) * 1975-04-15 1976-04-06 General Electric Company Protective starting circuit for inverter operated gaseous discharge lamps
US4117377A (en) * 1976-01-14 1978-09-26 Jimerson Bruce D Circuits for starting and operating ionized gas lamps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289118A (fr) * 1969-10-10 1972-09-13
DE2355201A1 (de) * 1973-11-05 1975-05-15 Hans Kreutzinger Vollelektronisches zuendgeraet fuer kaltstartleuchtstoffroehren insbesondere fuer 380 v-hochleistungsroehren
DE3107299A1 (de) * 1980-03-17 1981-12-10 Xerox Corp., 14644 Rochester, N.Y. Gluehlampenvorschaltung fuer eine leuchtstofflampe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165758A (zh) * 2017-07-26 2017-09-15 重庆理工大学 一种强流脉冲电子束源光遥控点火驱动器

Also Published As

Publication number Publication date
JPS5893197A (ja) 1983-06-02
DE3127876A1 (de) 1983-02-03
EP0069967B1 (fr) 1985-11-21
DE3267572D1 (en) 1986-01-02
ATE16673T1 (de) 1985-12-15

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