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WO2010006913A1 - Procédé permettant de faire fonctionner une lampe à décharge haute pression dans un appareil de projection vidéo, ballast électronique, appareil de projection vidéo, et produits-programmes d'ordinateur - Google Patents

Procédé permettant de faire fonctionner une lampe à décharge haute pression dans un appareil de projection vidéo, ballast électronique, appareil de projection vidéo, et produits-programmes d'ordinateur Download PDF

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Publication number
WO2010006913A1
WO2010006913A1 PCT/EP2009/057961 EP2009057961W WO2010006913A1 WO 2010006913 A1 WO2010006913 A1 WO 2010006913A1 EP 2009057961 W EP2009057961 W EP 2009057961W WO 2010006913 A1 WO2010006913 A1 WO 2010006913A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic ballast
commands
discharge lamp
video projection
pressure discharge
Prior art date
Application number
PCT/EP2009/057961
Other languages
German (de)
English (en)
Inventor
Martin BRÜCKEL
Bernhard Reiter
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
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 Osram Gesellschaft mit beschränkter Haftung filed Critical Osram Gesellschaft mit beschränkter Haftung
Publication of WO2010006913A1 publication Critical patent/WO2010006913A1/fr

Links

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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Definitions

  • the invention relates to a method for operating a high-pressure lamp m a video projection device. They be ⁇ also applies to an electronic ballast and an associated computer program product that enable the implementation of the inventive method. It also relates to a video projection device and a zugeh ⁇ - ges computer program product that enable the implementation of it ⁇ inventive method.
  • High-pressure discharge lamps in particular high-pressure discharge lamps, have the property that temperatures of up to several 1000 ° C. prevail during operation and the pressure in the lamp is more than 200 bar. If the high-pressure discharge lamp is switched off, these conditions have the consequence that the lamp can be re-ignited in the short term only with high voltage, approximately 20 kV. Usually, however, only one ignition with a lower voltage of approximately 1 to 3 kV is provided in such high-pressure discharge lamps. Such ignition is only after the cooling of the lamp and simultaneous decrease the gas pressure possible. This cooling can be a time span ⁇ avail of more than one minute.
  • US 2002/0135324 A1 describes that an arc discharge in such a lamp is maintained after being switched off, but the lamp power is reduced.
  • the control of the lamp of a high-pressure discharge lamp is typically carried out by means of an electronic ballast.
  • the electronic ballast means ge ⁇ appropriated signals are jedgingsgerat in a Videopro communicated to the electronic ballast of a verarbei ⁇ processing unit of the Videopro jetechnischsgerats detected operating ⁇ actions.
  • the signals have a binary content, so it is communicated that an operator action has taken place or not.
  • a data processing unit of the video projection device notifies the electronic control unit in the prior art that a switch-off procedure is to be initiated.
  • the electromotive see ballast now has the task to make this off ⁇ switching process. This can then be done according to the teachings of the prior art documents cited above.
  • the object of the present invention is to be user-friendly, the 15 operating a high pressure discharge lamp in a Videopro ⁇ jemies réelle.
  • the inventive method for operating a high-pressure discharge lamp in a video projection apparatus comprising the steps:
  • the invention makes it possible to provide for the execution of certain processes beyond the electronic ballast.
  • said unit of the video projection apparatus of the commands to the electronic ballast can be designed separately from the ⁇ switching operation.
  • the detected operation is an operation of an on-off switch of the video projection apparatus.
  • the commands may look different, and the electronic ballast must only respond.
  • a plurality of commands be issued, so that individual steps of a method to be performed by the Vi ⁇ deoharmions réelle are fixed.
  • further units are operated in coordination with the high-pressure discharge lamp.
  • Such further units is the Heiler, which is used for cooling the high pressure discharge lamp and is part of the VideoScienceionsgerats. It is advantageous if the video projection device tunes the shutdown of the high-pressure discharge lamp and its cooling by the Luf ⁇ ter each other. In this case, the unit thus commits the commands to the electronic ballast with commands to a further unit or the delivery of control signals to at least one further unit.
  • the electronic ballast according to the invention for ei ⁇ ne high pressure discharge lamp has a Emgangsan gleich for external commands and output terminals for the high pressure discharge lamp.
  • the electronic Vorschaltge ⁇ advises is designed - typically by Filing ⁇ his a suitable program in a memory and the possibility of its implementation in a Mikroprozes ⁇ sor - evaluate incoming commands via the input terminals and these commands in a loading of the output terminals with electrical To convert current with a current defined by the commands.
  • the electronic ballast fulfills important Aufga ⁇ ben in the control of high-pressure discharge lamp.
  • the electronic ballast according to the invention is different from electronic ballasts from one to ⁇ control of certain procedures relieved. Rather, it is able to receive and implement control commands.
  • one and the same electronic ballast can be used in a plurality of video projec- tion devices, while in each individual video projec- Onsong individually suitable commands are generated, since ⁇ can be optimally operated with the video projection device.
  • the video projection device has a connection for connecting an electronic ballast for a high-pressure discharge lamp. It also has a verarbei ⁇ processing unit coupled to the terminal. Finally, it has at least one operating element coupled to the data processing unit.
  • the data processing unit is adapted, in particular by Abrobsein a program of a corresponding computer program in a memory and the possibility of its implementation in a microprocessor, an operation of the festzu ⁇ at least to detect an operating controls ment and depending on commands for the at least indirect fixing an amperage and dispense over the connection to a connected electronic ballast. Indirectly, the determination of the amperage may be when the commands indicate a desired power. Then a tension also plays a role.
  • the video projection device according to the invention can be combined with the electronic ballast according to the invention.
  • the video projec- tor takes over tasks that would otherwise require an electronic ballast. has advises, namely to set the current for the Hoch réelleentla ⁇ tion lamp. Due to the design (programming) of the video projection device or its data processing unit, structural features of the video projection device can thus be taken into account.
  • the at least one operating element is preferably an em-off switch for the video projection device.
  • the data processing unit can specify, in particular, the switch-off process that the electronic ballast undergoes. This goes beyond the state of the art, in that video projection devices can only trigger the switch-off process as such, but can not take advantage of its design (determination of individual current strengths).
  • the data processing unit is also coupled with egg ⁇ nem fan (fan) to control this. Then the commands for determining a current strength with control commands for or signals to the shipser can be tuned.
  • egg ⁇ nem fan fan
  • Fig. 1 schematically illustrates the structure of some components of a Vi ⁇ deoharmions réelles with a high-pressure discharge lamp and associated electronic ballast, and
  • Fig. 2 is a flow chart, on the basis of which the operation of turning off a high-pressure discharge lamp erläu ⁇ tert.
  • a high pressure discharge lamp 10 is applied through a electronic ⁇ ULTRASONIC ballast 12 with current I AC. Pre lying the high pressure discharge lamp to be used in a Vi ⁇ deoharmions réelle 10th If the high-pressure discharge lamp with the associated electronic ballast is then regarded as part of the video projection apparatus, the remaining components of the video projection apparatus are designated by 14 schematically in FIG. This is the actual video projection device into which the electronic ballast 12 with the high-pressure discharge lamp 10 can then be installed.
  • the video projection device is an on-off switch 16 as a control element. Actuating a switch usually causes a current flow. The current flow is then detected. A corresponding information about an actuation of the on-off switch 16 is presently a microprocessor 18 may be supplied, which is symbolized in Fig. 1 by a simple connection line.
  • the microprocessor 18 is associated with a memory 20. In the memory 20, a suitable computer program is stored, which is carried out by the microprocessor.
  • the Computer program in the memory 20 is to be present ⁇ effect that the process of the invention explained below is performed.
  • connection line 22 for the transmission of commands from the microprocessor 18 to the electronic ballast 12, namely in particular to a microprocessor 24 of the electronic ballast 12.
  • the microprocessor 24 of the electronic ballast 12 is assigned a memory 26 in which a Computer program is stored, which is carried out by the microprocessor 24, so that the method explained below with reference to FIG. 2 is feasible.
  • the microprocessor 24 can send back signals TxD via a connection line 28 to the microprocessor 18 of the video projection device 14. These return signals no longer play any role in the following explanation.
  • the signals RxD which the microprocessor 18 sends to the microprocessor 24 are to determine how the electronic ballast 12 has to apply the current I AC to the high-pressure discharge lamp 10.
  • the electronic ballast 12 receives via an input 30, a DC voltage of the present 380 V, and a bottom plate 32 serves as the actual power source for Mitel ⁇ ment of the current I AC to the high-pressure discharge lamp 10.
  • BUCK converter sogenann ⁇ ter
  • a fan 34 is provided for cooling the high-pressure discharge lamp 10 ⁇ that of the microprocessor 18 is driven.
  • the illustration of the fan 34 is, for reasons of compactness of the remaining video projection device 14 shows ge ⁇ .
  • the fan 34 is to be arranged in the vicinity of the high-pressure discharge lamp 10.
  • step S12 it is checked whether the on-off switch 16 has been actuated in order to switch off the system (system of "SYS-off”). If this question is answered with “no”, the operation of the lamp proceeds according to step S10 further. If the question as to whether the on-off switch 16 has been actuated is answered with "yes”, it is checked in step S14 whether the high-pressure discharge lamp is currently in the starting phase, namely that immediately after switching on and If the question as to whether the high-pressure discharge lamp 10 is in the starting phase is answered "yes", the process immediately goes to step S 18, which will be explained below.
  • step S 14 If the high-pressure discharge lamp has already been in operation for a certain time and thus the starting phase has been completed, then the question is answered in step S 14 with "no". tet is performed first step 16: The lamp is reduced to one operating at 20% power, ie, the current intensity of the current I AC is set entspre ⁇ accordingly, optionally suitable for this purpose and the applied voltage. The fan (fan) 34 is continued in normal operation. In normal operation, the air 34 is running at approximately average power regarding the maximum possible power. Both the magnitude of the power in step S16 and the operation of the fan is determined by commands that the microprocessor 18 outputs.
  • the microprocessor 24 of the electronic ballast 12 only converts these commands to the effect that the low-level controller 32 outputs the corresponding current intensity I A c to the high-pressure discharge lamp 10, if appropriate a suitable voltage for this purpose.
  • the microprocessor 18 therefore tunes the commands RxD to the microprocessor 24 with commands to the fan 34.
  • step S16 executes s Runaway ⁇ for a period of 30th Subsequently, the power is increased by 10% in step S18, and at the same time the air is displaced 34 m full-load operation, so it runs at maximum power ⁇ .
  • the step S18 is directly Runaway leads ⁇ when the start-up phase was still running when the Em-off switch was 16 operated to turn off the system.
  • step S16 in the event that the starting phase is completed, has the advantage that avoided by the non-startup of the fan and low power mechanical stresses on the discharge vessel of the lamp and thus failure of the high-pressure discharge lamp 10 is prevented.
  • the cooling is then accelerated according to step S18 because the fan is running at full load.
  • step S20 it is checked after step S18 whether the temperature of the high-pressure discharge lamp 10 has fallen below a switch-off temperature ⁇ . If this is not the case, proceeds to step S18. If the Ausschalttem ⁇ temperature T off is not reached, so the lamp is turned off in step S22. The lamp has not yet completely cooled down, so that according to step S24 the fan continues to be operated in full load operation. In step S26 it is then checked whether the temperature of the lamp has fallen below an on ⁇ switching temperature. The switch-on temperature T 0n is less than the switch- off temperature T off . As long as the switch-on temperature T 0n has not fallen below, the process continues to step S24.
  • step S28 the video projection device is operated in standby mode.
  • step S32 it is checked whether the on-off switch is operated, that is, the system is turned on ("SYS-Em"). As long as this question is answered with "no", the operation proceeds to step S30, that is, standby - Maintain operation.
  • the Em-off switch 16 has been actuated to turn on, the operation of the Lam ⁇ pe is received in accordance with step S. In this case, a start phase is run through, which need not be described in detail in the present case.
  • Em electronic ballast 12 can be coupled to any video projection devices 14 in the other, when the inventive measures are implemented: To ⁇ long as the video projection device 14 in particular has egg NEN microprocessor 18 and a corresponding Com ⁇ computer program in the memory 20 is stored, is the Videopro jetationsgerat 14 in a position over the electronic ballast ⁇ specific set the power with which the high-pressure discharge lamp is operated ⁇ . This performance processing can be tuned to the operation of the fan 34 ⁇ to. This results not only from the steps S16 and S18, but also from the synopsis of the steps S22 and S24 and S28.

Landscapes

  • Transforming Electric Information Into Light Information (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention concerne une lampe à décharge haute pression (10) qui est alimentée en courant par un ballast électronique (12), dans un appareil de projection vidéo (14), et qui doit être réactivée aussi rapidement que possible après mise hors-circuit. A cet effet, l'invention est caractérisée en ce qu'il est prévu, en particulier pour l'utilisation, en cas d'arrêt de la lampe (10) après mise hors circuit, que l'appareil de projection vidéo (14) émette des instructions audit ballast électronique (12), lesquelles fixent l'intensité de courant (IAc) alimentant la lampe à décharge haute pression (10), de sorte que sa puissance soit également fixée. Un ventilateur (34) qui est réglé pour commander la lampe, peut être également actionné dans le ballast électronique (12).
PCT/EP2009/057961 2008-07-15 2009-06-25 Procédé permettant de faire fonctionner une lampe à décharge haute pression dans un appareil de projection vidéo, ballast électronique, appareil de projection vidéo, et produits-programmes d'ordinateur WO2010006913A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008033191.0 2008-07-15
DE200810033191 DE102008033191A1 (de) 2008-07-15 2008-07-15 Verfahren zum Betreiben einer Hochdruckentladungslampe in einem Videoprojektionsgerät, elektronisches Vorschaltgerät, Videoprojektionsgerät sowie Computerprogrammprodukte

Publications (1)

Publication Number Publication Date
WO2010006913A1 true WO2010006913A1 (fr) 2010-01-21

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Application Number Title Priority Date Filing Date
PCT/EP2009/057961 WO2010006913A1 (fr) 2008-07-15 2009-06-25 Procédé permettant de faire fonctionner une lampe à décharge haute pression dans un appareil de projection vidéo, ballast électronique, appareil de projection vidéo, et produits-programmes d'ordinateur

Country Status (2)

Country Link
DE (1) DE102008033191A1 (fr)
WO (1) WO2010006913A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005062681A1 (fr) * 2003-12-08 2005-07-07 Thomson Licensing Systeme et procede permettant d'alimenter des lampes a decharge a forte intensite
US20060012758A1 (en) * 2004-07-15 2006-01-19 Casio Computer Co., Ltd. Projection equipment and a method of driving a light source lamp in project equipment
WO2006136993A2 (fr) * 2005-06-24 2006-12-28 Philips Intellectual Property & Standards Gmbh Procede d'arret d'une lampe a decharge haute pression et unite de commande conçue pour commander une telle lampe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4070420B2 (ja) 2001-03-23 2008-04-02 フェニックス電機株式会社 超高圧放電灯の点灯方法と点灯装置
JP2004319193A (ja) 2003-04-15 2004-11-11 Phoenix Denki Kk 高圧放電灯の点灯方法と点灯装置並びに該点灯装置用使用した映像機器
WO2007132369A2 (fr) 2006-05-12 2007-11-22 Philips Intellectual Property & Standards Gmbh Procédé de coupure d'une lampe à décharge haute pression et module d'excitation servant à exciter une lampe à décharge haute pression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005062681A1 (fr) * 2003-12-08 2005-07-07 Thomson Licensing Systeme et procede permettant d'alimenter des lampes a decharge a forte intensite
US20060012758A1 (en) * 2004-07-15 2006-01-19 Casio Computer Co., Ltd. Projection equipment and a method of driving a light source lamp in project equipment
WO2006136993A2 (fr) * 2005-06-24 2006-12-28 Philips Intellectual Property & Standards Gmbh Procede d'arret d'une lampe a decharge haute pression et unite de commande conçue pour commander une telle lampe

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DE102008033191A1 (de) 2010-02-04

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