EP0457043B1 - Lichtblitzwarnanlage - Google Patents

Lichtblitzwarnanlage Download PDF

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Publication number
EP0457043B1
EP0457043B1 EP91106092A EP91106092A EP0457043B1 EP 0457043 B1 EP0457043 B1 EP 0457043B1 EP 91106092 A EP91106092 A EP 91106092A EP 91106092 A EP91106092 A EP 91106092A EP 0457043 B1 EP0457043 B1 EP 0457043B1
Authority
EP
European Patent Office
Prior art keywords
storage capacitor
switching device
flashing
storage
ignition
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.)
Expired - Lifetime
Application number
EP91106092A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0457043A3 (en
EP0457043A2 (de
Inventor
Wolfgang Grimm
Heiko Janssen
Siegfried Schmees
Werner Lepper
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0457043A2 publication Critical patent/EP0457043A2/de
Publication of EP0457043A3 publication Critical patent/EP0457043A3/de
Application granted granted Critical
Publication of EP0457043B1 publication Critical patent/EP0457043B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp

Definitions

  • the invention relates to a light flash warning system with a voltage source, with a main flyback converter, with a flash tube, with an ignition device, with two storage capacitors and with an electrical switching device.
  • a flashing light warning system which has a voltage source, a main flyback converter, a flash tube, an ignition device, two storage capacitors and an electrical switching device.
  • the electrical switching device is arranged in series with one of the two storage capacitors. If the electrical switching device is closed, both storage capacitors are charged to the same charging voltage. If the electrical switching device is open, the first storage capacitor is charged much more slowly than the second storage capacitor via a resistor.
  • the invention has for its object to provide a flashing light warning system that is simple and inexpensive to manufacture and that enables the light energy to be switched between a daytime flash and at least one night flash in a safe generation of light flashes, the night flash having a light output that is only at a distance with night vision devices is recognizable.
  • the object is achieved in that the switching path of a first electrical switching device is arranged parallel to the first storage capacitor, that a third storage capacitor and the ignition device are connected to an additional flyback converter and that the first switching device can be reversed by an operating device.
  • the switching path of a first electrical switching device is arranged parallel to the first storage capacitor, because when the switching path of the first switching device is open, the energy stored in the first storage capacitor can be made fully available to the flash tube and thus a powerful daytime flash is generated can, which is reliably recognizable with the naked eye without aids and is short-circuited when the first switching device is closed, so that the storage energy of the first storage capacitor is not made available to the flash tube.
  • a third storage capacitor and the ignition device are connected to an additional flyback converter ensures, when the first switching device is closed, that on the one hand the ignition device is supplied with a voltage which ensures the generation of high-frequency ignition signals and, on the other hand, a third storage capacitor is charged to a storage energy is, which ensures that the flash tube ignites, the storage energy provided by the third storage capacitor and thus light flash energy is so low that this z.
  • an aircraft using night vision devices with shorted first storage capacitor does not interfere.
  • the first switching device can be reversed by an operating device, which results in a particularly safe and reliable manual or automatic reversing of the first switching device and thus a reversal from day to night operation.
  • a first diode is arranged in the forward direction in the connection between the first storage capacitor and the anode of the flash tube, because this ensures that when the first storage capacitor is short-circuited, ignition can take place by means of the energy in the third storage capacitor without this flows to the main flyback converter (HW).
  • HW main flyback converter
  • the fact that the switching path of a second switching device is arranged parallel to a second storage capacitor, that the second storage capacitor is connected to the additional flyback converter and that the second switching device can be reversed by the operating device, has the advantage that, depending on the activation of the first switching device and the second switching device by the operating device a further flash energy level for the flashes can be switched on by the flash tube.
  • a second diode is arranged in the forward direction in the connection between the second storage capacitor and the anode of the flash tube, so that when the second switching device is closed, the storage energy of the third storage capacitor can be discharged only via the flash tube.
  • a high-impedance series resistor is arranged in the connection between the second storage capacitor and the third storage capacitor, because this ensures that when the second switching device is closed, the storage energy of the third storage capacitor does not flow away via the switching path of the second switching device, but via the Flash tube is discharged.
  • the series resistor is designed in such a way that it has a low resistance to charge the second storage capacitor sufficiently quickly when the second switching device is open.
  • the main flyback converter is decoupled from the additional flyback converter, which is particularly necessary when the voltage of the main flyback converter is greater than the voltage of the additional flyback converter.
  • the ignition device is a parallel or serial ignition device because, depending on the application, this results in a particularly safe and reliable ignition.
  • the ignition device has a clock generator or is connected to a clock generator
  • a particularly reliable periodic or periodically changeable ignition of the flash tube In a particularly simple and inexpensive embodiment, a particularly reliable periodic or periodically changeable ignition of the flash tube.
  • a main flyback converter (HW) is connected here to a voltage source (U) which supplies a direct voltage or alternating voltage.
  • the main flyback converter (HW) generates a direct voltage from the voltage from the voltage source (U), which is sufficient to charge the first storage capacitor (K1), which is arranged in parallel with the outputs of the main flyback converter (HW), to a storage energy which is sufficient in order to operate the flash tube (R) arranged parallel to the first storage capacitor (K1) with a light energy which ensures sufficient visibility during the day.
  • a first switching device (S1) which can be reversed by an operating device (B), is arranged parallel to the first storage capacitor (K1), which is designed here, for example, as an electrolytic capacitor.
  • the flash tube (R) becomes the Unrestricted storage energy of the first storage capacitor (K1) provided.
  • the first switching device (S1) When the first switching device (S1) is closed, the first storage capacitor (K1) and thus the short-circuit proof main flyback converter (HW) is short-circuited, so that the storage energy of the first storage capacitor (K1) of the flash tube (R) is not available for generating the light flashes.
  • the ignition device (Z) is electrically conductively connected to an additional flyback converter (ZW), which is connected to the voltage source (U) is connected.
  • the additional flyback converter (ZW) can also be part of the main flyback converter (HW).
  • a third storage capacitor is electrically connected to the additional flyback converter and the flash tube (R).
  • a second storage capacitor (K2) is connected in an electrically conductive manner via a series resistor (VR) on the one hand to the additional flyback converter (ZW) and on the other hand to the flash tube (R).
  • a second switching device (S2) is arranged, which can be reversed by the operating device (B), so that the storage energy of the second storage capacitor (K2) depends on the switching position of the second switching device (S2) first storage capacitor (K1) and / or the third storage capacitor (K3) can be connected.
  • the first storage capacitor (K1) is in the forward direction with the anode of the flash tube via a first diode (D1) (R)
  • the second storage capacitor (K2) is connected via a second diode (D2) in the forward direction to the anode of the flash tube
  • the third storage capacitor (K3) is connected via a third diode (D3) in the forward direction to the anode of the flash tube ( R) connected.
  • the diodes (D1, D2, D3) serve for decoupling and ensure that, depending on the switching states of the first and second switching devices (S1, S2), the stored voltages of the flash tube (R) are made available without restriction.
  • the series resistor (VR) for the second storage capacitor (K2) is designed so that, on the one hand, when the second switching device (S2) is closed, the storage energy of the third capacitor (K3) does not flow out via the second switching device, but is made available to the flash tube (R) is, that is, it is designed with high resistance, on the other hand it is designed with low resistance that the second storage capacitor (K2) is safely and completely charged during operation of the flashing light warning system.
  • the ignition device (Z) can have a clock generator or can be connected to a clock generator in order to generate periodically high-frequency ignition signals.
  • the ignition device (Z) shown in FIG. 1 is designed, for example, as a parallel ignition device which supplies the high-frequency ignition voltage to the flash tube (R) via the ignition anode (ZA).
  • the control device (B) can be manually adjustable, but it can also be dependent on predetermined parameters such. B. reversing the first switching device (S1) and / or the second switching device (S2) during automatic detection of night flight operation.
  • the switching devices (S1, S2) can be designed as transistors, thyristors or similar switching components.
  • the flash tube (R) is provided with the full energy stored in the storage capacitors (K1, K2, K3), so that, triggered by the ignition device (Z), light flashes are periodically generated, which can be recognized during the day without aids are.
  • the switching device (S1) is open and the switching device (S2) is closed, the light energy being reduced only by the amount of the storage energy supplied by the second storage capacitor (K2).
  • the storage energy of the first storage capacitor is approximately 100 Ws and the storage energies of the second storage capacitor (K2) and the third storage capacitor (K3) are, for example, in the range of 100 mWs
  • the switchover of the second switching device (S2) proves that the first is open Switching device (S1) as negligible.
  • the values mentioned for the storage energies of the capacitors (K1, K2, K3) can vary.
  • the first storage capacitor (K1) is short-circuited, so that only the storage energies of the second storage capacitor (K2) and the third storage capacitor (K3) of the flash tube (R) are available be put.
  • the storage energies of the second storage capacitor (K2) and the third storage capacitor (K3) are, for example, about 60 mWs, it is ensured, on the one hand, that the flash tube ignites reliably and, on the other hand, ensures that, during operation, e.g. B. an aircraft using night vision flashes are generated which can not lead to glare to the pilot and which can not be seen with the naked eye from greater distances.
  • the second storage capacitor (K2) is also short-circuited, so that only the storage energy of the third storage capacitor (K3) is supplied to the flash tube (R).
  • the connection and disconnection of the second storage capacitor has proven to be particularly advantageous, depending on the lighting conditions.
  • Figure 2 shows an embodiment of a parallel ignition device (Z) and Figure 3 shows an embodiment of a serial ignition device (Z).
  • Both ignition devices (Z) have a resistor (W), an ignition capacitor (ZK), a transformer (T) and a switch (TH), which is designed here as a thyristor, for example, and a clock generator, which is not shown here , can be controlled in order to supply the ignition energy of the ignition capacitor (ZK) via the transformer (T) to the flash tube (R).
  • the ignition voltage is supplied to the flash tube (R) via the ignition anode (ZA).
  • the high-frequency ignition energy is supplied to the flash tube (R) via the cathode.
  • the ignition device (Z) is supplied with voltage by the additional flyback converter (ZW).

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
EP91106092A 1990-05-14 1991-04-17 Lichtblitzwarnanlage Expired - Lifetime EP0457043B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015401A DE4015401C1 (enrdf_load_stackoverflow) 1990-05-14 1990-05-14
DE4015401 1990-05-14

Publications (3)

Publication Number Publication Date
EP0457043A2 EP0457043A2 (de) 1991-11-21
EP0457043A3 EP0457043A3 (en) 1992-07-29
EP0457043B1 true EP0457043B1 (de) 1995-01-11

Family

ID=6406334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106092A Expired - Lifetime EP0457043B1 (de) 1990-05-14 1991-04-17 Lichtblitzwarnanlage

Country Status (3)

Country Link
US (1) US5162702A (enrdf_load_stackoverflow)
EP (1) EP0457043B1 (enrdf_load_stackoverflow)
DE (1) DE4015401C1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205871A1 (de) * 1992-02-26 1993-09-02 Hella Kg Hueck & Co Lichtblitzwarnanlage
US5355116A (en) * 1993-03-16 1994-10-11 Wheelock Adjustable strobe with temperature stabilization

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108516A (en) * 1965-11-19 1968-04-03 James Russell Navigation lights for aircraft
US3666964A (en) * 1970-11-27 1972-05-30 Subsea Products Inc Energy storage and discharge system
US3644818A (en) * 1971-03-10 1972-02-22 Gte Sylvania Inc Electronic flashlamp power supply
US3758817A (en) * 1971-10-29 1973-09-11 Honeywell Inc Flash apparatus with automatic light termination using a number of storage capacitors
DE2420197C3 (de) * 1974-04-26 1978-07-06 Neumann Elektronik Gmbh, 4330 Muelheim Einrichtung zur Speisung einer Glfihlampe, einer Leuchtdiode oder einer Blitzröhre in einer Notrufsäule
DE2829922C2 (de) * 1978-07-07 1987-02-26 Hella KG Hueck & Co, 4780 Lippstadt Signal-Blitzleuchte
US4321507A (en) * 1978-11-21 1982-03-23 Austin Electronics, Inc. Strobe power supply
FR2571506B1 (fr) * 1984-10-05 1987-01-23 Trt Telecom Radio Electr Systeme d'observation nocturne semi-actif a intensification de lumiere
US4687971A (en) * 1984-11-08 1987-08-18 Fuji Xerox Company, Limited Power supply for discharge lamp

Also Published As

Publication number Publication date
DE4015401C1 (enrdf_load_stackoverflow) 1991-11-14
EP0457043A3 (en) 1992-07-29
EP0457043A2 (de) 1991-11-21
US5162702A (en) 1992-11-10

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