JP2007257989A - High-pressure discharge lamp lighting device - Google Patents

High-pressure discharge lamp lighting device Download PDF

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JP2007257989A
JP2007257989A JP2006080572A JP2006080572A JP2007257989A JP 2007257989 A JP2007257989 A JP 2007257989A JP 2006080572 A JP2006080572 A JP 2006080572A JP 2006080572 A JP2006080572 A JP 2006080572A JP 2007257989 A JP2007257989 A JP 2007257989A
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discharge lamp
pressure discharge
voltage
capacitor
lighting device
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Tsutomu Takatsuki
努 高月
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Osram Melco Ltd
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Osram Melco Ltd
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Priority to DE102007012077A priority patent/DE102007012077A1/en
Publication of JP2007257989A publication Critical patent/JP2007257989A/en
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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
    • H05B41/14—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
    • H05B41/2885—Static converters especially adapted therefor; Control thereof
    • H05B41/2886—Static converters especially adapted therefor; Control thereof comprising a controllable preconditioner, e.g. a booster
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-pressure discharge lamp lighting device capable of prolonging time until lights-out of a high-pressure discharge lamp, in case of instantaneous service interruption of input power supply and instantaneous voltage fall. <P>SOLUTION: The high-pressure discharge lamp lighting device 100 for lighting a high-pressure discharge lamp 7 having a boosting inverter 3 containing a capacitor C31 and a step-down inverter 4 containing a switching element Q1 is provided with a detection circuit 9 detecting voltage of the capacitor C31 of the boosting inverter 3, a control circuit 10 controlling the switching element Q41 of the step-down inverter 4, and a power switching part 10a fitted to the control circuit 10 for controlling the switching element Q41 of the step-down inverter 4 so that an output power to the high-pressure discharge lamp 7 is to become a given value lower than at a steady state, in case a voltage of the capacitor C31 as detected by the detecting circuit 9 falls below a given voltage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、メタルハライドランプ等の高圧放電灯点灯装置に関するもので、入力電源の瞬時停電、瞬時電圧降下が起きた時に、電源復帰まで点灯を維持させるようにした高圧放電灯点灯装置に関する。   The present invention relates to a high pressure discharge lamp lighting device such as a metal halide lamp, and more particularly to a high pressure discharge lamp lighting device that maintains lighting until the power is restored when an instantaneous power failure or instantaneous voltage drop occurs in an input power source.

メタルハライドランプは、定常状態で点灯した後に消灯し、直後に点灯しようとした場合、再始動するまでに、数分（４〜７分）を要する。従って、設置状況によっては、フロアの大きな面積が停電状態になる課題がある。   When the metal halide lamp is turned on in a steady state and then turned off, and then immediately turned on, it takes several minutes (4 to 7 minutes) to restart. Therefore, depending on the installation situation, there is a problem that a large area of the floor becomes a power failure state.

図４は従来の放電灯点灯装置の概略構成を示すブロック図である。図４において、１０１は商用電源、１０２は電源スイッチ、１０３は整流平滑回路で、通常設計容量値以上の容量値の平滑コンデンサを備えている。１０４はランプ電力を制御するチョッパ回路、１０５は極性を切り換えるフルブリッジインバータ回路、１０６は始動器、１０７はメタルハライドランプなどの放電灯、１０８は電源停電時の無電圧を検出する入力電圧検出回路で、その検出信号でチョッパ回路１０４を制御するようになっている。   FIG. 4 is a block diagram showing a schematic configuration of a conventional discharge lamp lighting device. In FIG. 4, 101 is a commercial power supply, 102 is a power switch, 103 is a rectifying and smoothing circuit, and includes a smoothing capacitor having a capacitance value equal to or higher than the normal design capacitance value. 104 is a chopper circuit that controls lamp power, 105 is a full-bridge inverter circuit that switches polarity, 106 is a starter, 107 is a discharge lamp such as a metal halide lamp, and 108 is an input voltage detection circuit that detects no-voltage during a power failure. The chopper circuit 104 is controlled by the detection signal.

この放電灯点灯装置において、瞬時停電が発生した場合は、商用電源１０１の瞬時停電時の無電圧を入力電圧検出回路１０８で検出し、チョッパ回路１０４を低ランプ電力の調光状態とする。これにより整流平滑回路１０３の大容量の平滑コンデンサ蓄積電気エネルギーにより、電源の短時間の遮断に対しても放電灯１０７を消灯することなく、点灯を維持することができる（例えば、特許文献１参照）。
特開平６−１６８７８８公報 In this discharge lamp lighting device, when an instantaneous power failure occurs, the input voltage detection circuit 108 detects the no-voltage at the time of the instantaneous power failure of the commercial power supply 101, and the chopper circuit 104 is dimmed with low lamp power. Thereby, the large-capacity smoothing capacitor accumulated electric energy of the rectifying and smoothing circuit 103 can maintain the lighting without turning off the discharge lamp 107 even when the power supply is cut off for a short time (see, for example, Patent Document 1). ).
JP-A-6-168788

従来の放電灯点灯装置は、電源１０１の瞬時停電時の無電圧を入力電圧検出回路１０８で検出し、チョッパ回路１０４を低ランプ電力の調光状態とするもので、瞬時電圧降下（サグ）に対しては、対応ができないという課題があった。   The conventional discharge lamp lighting device detects the no-voltage at the time of the instantaneous power failure of the power supply 101 by the input voltage detection circuit 108 and puts the chopper circuit 104 into a dimming state with a low lamp power, resulting in an instantaneous voltage drop (sag). On the other hand, there was a problem that it could not be handled.

また、仮に瞬時電圧降下に対応するために、整流平滑回路１０３前後の電圧を検出して調光制御を行う場合は、広範囲に亘る不規則な瞬時電圧降下をカバーするためには複雑な検出回路が必要となる。複雑な検出回路を搭載しても、チラツキなどの誤動作を起こす可能性がある。   In addition, if the dimming control is performed by detecting the voltage before and after the rectifying and smoothing circuit 103 in order to cope with the instantaneous voltage drop, a complicated detection circuit is required to cover an irregular instantaneous voltage drop over a wide range. Is required. Even if a complicated detection circuit is installed, malfunctions such as flickering may occur.

この発明は、上記のような課題を解決するためになされたもので、入力電源の瞬時停電、瞬時電圧降下が起きた時に、高圧放電灯の消灯までの時間を延ばすことができる高圧放電灯点灯装置を提供することを目的とする。   The present invention has been made to solve the above-described problems. When an instantaneous power failure or instantaneous voltage drop of the input power source occurs, the high-pressure discharge lamp can be turned on to extend the time until the high-pressure discharge lamp is turned off. An object is to provide an apparatus.

この発明に係る高圧放電灯点灯装置は、コンデンサを含む昇圧インバータと、スイッチング素子を含む降圧インバータとを有する高圧放電灯を点灯させる高圧放電灯点灯装置において、昇圧インバータのコンデンサの電圧を検出する検出回路と、降圧インバータのスイッチング素子を制御する制御回路と、この制御回路に設けられ、検出回路の検出するコンデンサの電圧が所定電圧以下に低下する場合に、高圧放電灯への出力電力が定常時より低い所定値になるように降圧インバータのスイッチング素子を制御する電力切替部とを備えたことを特徴とする。   A high pressure discharge lamp lighting device according to the present invention is a high pressure discharge lamp lighting device for lighting a high pressure discharge lamp having a step-up inverter including a capacitor and a step-down inverter including a switching element. Circuit, a control circuit for controlling the switching element of the step-down inverter, and the output power to the high-pressure discharge lamp when the voltage of the capacitor detected by the detection circuit falls below a predetermined voltage when the output power to the stationary circuit is steady And a power switching unit that controls the switching element of the step-down inverter so as to have a lower predetermined value.

また、この発明に係る高圧放電灯点灯装置は、コンデンサの電圧の所定電圧は、設計値の７３％前後とすることを特徴とする。   The high-pressure discharge lamp lighting device according to the present invention is characterized in that the predetermined voltage of the capacitor voltage is about 73% of the design value.

また、この発明に係る高圧放電灯点灯装置は、高圧放電灯への出力電力の定常時より低い所定値は、最小値が定常点灯時の１／２前後とすることを特徴とする。   Further, the high pressure discharge lamp lighting device according to the present invention is characterized in that the predetermined value lower than the steady state of the output power to the high pressure discharge lamp has a minimum value of about 1/2 of the steady state lighting.

この発明に係る高圧放電灯点灯装置は、上記構成により、入力電源の瞬時停電、瞬時電圧降下が起きた時に、高圧放電灯の消灯までの時間を延ばすことができる。   With the above configuration, the high pressure discharge lamp lighting device according to the present invention can extend the time until the high pressure discharge lamp is turned off when an instantaneous power failure or instantaneous voltage drop occurs in the input power supply.

実施の形態１．
図１乃至図３は実施の形態１を示す図で、図１は高圧放電灯点灯装置１００の回路図、図２は瞬時停電（電源電圧０％）又は瞬時電圧降下（電源電圧３０％、６０％）が発生した場合の、昇圧インバータ３のコンデンサＣ３１の電圧の変化を示す図（（ａ）はコンデンサＣ３１の電圧の変化のデータ、（ｂ）そのグラフ）、図３はランプの出力電力を変化させて瞬時停電時にランプ点灯を維持できる時間を測定した結果を示す図である。 Embodiment 1 FIG.
1 to 3 are diagrams showing the first embodiment. FIG. 1 is a circuit diagram of a high pressure discharge lamp lighting device 100. FIG. 2 is an instantaneous power failure (power supply voltage 0%) or an instantaneous voltage drop (power supply voltage 30%, 60). %) Is a graph showing a change in the voltage of the capacitor C31 of the booster inverter 3 ((a) is data of a change in the voltage of the capacitor C31, (b) a graph thereof), and FIG. It is a figure which shows the result of having measured and having measured the time which can maintain lamp lighting at the time of an instantaneous power failure.

図１により高圧放電灯点灯装置１００の構成を説明する。整流回路２は、商用電源１から交流電力を取り込んで整流を行う、ダイオードＤ２１、ダイオードＤ２２、ダイオードＤ２３、ダイオードＤ２４で構成されるダイオードブリッジ及びこのダイオードの両出力端間に接続されるコンデンサ２１で構成される。   The configuration of the high pressure discharge lamp lighting device 100 will be described with reference to FIG. The rectifier circuit 2 is composed of a diode bridge composed of a diode D21, a diode D22, a diode D23, and a diode D24 that performs rectification by taking in AC power from the commercial power supply 1, and a capacitor 21 connected between both output terminals of the diode. Composed.

昇圧インバータ３は、整流回路２の高電位側出力端と一端が接続されるインダクタンスＬ３１、このインダクタンスＬ３１の他端および整流回路２の低電位側出力端と夫々ドレインおよびソースが接続されるＦＥＴＱ３１（電界効果トランジスタ）、インダクタンスＬ３１の他端とアノードが接続されるダイオードＤ３１、およびこのダイオードＤ３１のカソードと整流回路２の低電位側出力端との間に接続されるコンデンサＣ３１により構成される。   The step-up inverter 3 has an inductance L31 connected at one end to the high potential side output end of the rectifier circuit 2, an FET Q31 (connected to the other end of the inductance L31 and the low potential side output end of the rectifier circuit 2 respectively at the drain and source. Field effect transistor), a diode D31 to which the other end of the inductance L31 and the anode are connected, and a capacitor C31 connected between the cathode of the diode D31 and the low potential side output end of the rectifier circuit 2.

降圧インバータ４は、ダイオードＤ３１のカソードとドレインが接続されるＦＥＴＱ４１（スイッチング素子の一例）、このＦＥＴＱ４１のソースおよび整流回路２の低電位側出力端と夫々カソードおよびアノードが接続されるダイオードＤ４１、ＦＥＴＱ４１のソースと一端が接続されるインダクタンスＬ４１、このインダクタンスＬ４１の他端と整流回路２の低電位側出力端との間に接続されるコンデンサＣ４１により構成される。   The step-down inverter 4 includes an FET Q41 (an example of a switching element) to which the cathode and drain of a diode D31 are connected, a diode D41 to which the cathode and anode are connected to the source of the FET Q41 and the low potential side output terminal of the rectifier circuit 2, and FET Q41. The capacitor L41 is connected between the other end of the inductance L41 and the low-potential side output end of the rectifier circuit 2.

点灯回路５は、コンデンサＣ４１と並列接続される直列接続のＦＥＴＱ５１、ＦＥＴＱ５２、これらＦＥＴＱ５１、ＦＥＴＱ５２と並列接続される直列接続のＦＥＴＱ５３、ＦＥＴＱ５４、始動パルス発生回路６により構成される。   The lighting circuit 5 includes a series-connected FETQ51 and FETQ52 connected in parallel to the capacitor C41, a series-connected FETQ53 and FETQ54 connected in parallel to the FETQ51 and FETQ52, and a start pulse generating circuit 6.

検出回路９は、昇圧インバータ３のコンデンサＣ３１の電圧を検出している。   The detection circuit 9 detects the voltage of the capacitor C31 of the boost inverter 3.

制御回路１０は、通常点灯時は、降圧インバータ４のＦＥＴＱ４１のデューティ制御により降圧インバータ４から点灯回路５への所定の直流電力の供給制御を行う機能を有するほかに、電力切替部１０ａによる機能を備える。   During normal lighting, the control circuit 10 has a function of controlling the supply of predetermined DC power from the step-down inverter 4 to the lighting circuit 5 by duty control of the FET Q41 of the step-down inverter 4, and a function by the power switching unit 10a. Prepare.

電力切替部１０ａは、検出回路９により、昇圧インバータ３のコンデンサＣ３１の電圧が所定電圧以下に降下したことを検出した場合、オン期間の短いデューティ制御信号によりＦＥＴＱ４１の制御が所定時間行われるようにする。   When the detection circuit 9 detects that the voltage of the capacitor C31 of the step-up inverter 3 has dropped below a predetermined voltage, the power switching unit 10a controls the FET Q41 for a predetermined time with a duty control signal having a short ON period. To do.

図２は、商用電源１の瞬時停電時又は瞬時電圧降下時の、昇圧インバータ３のコンデンサＣ３１の電圧の変化を測定した結果である。昇圧インバータ３のコンデンサＣ３１の電圧は、商用電源１が通常の電圧であれば、例えば２４７Ｖになるように設計されている。   FIG. 2 shows a result of measuring a change in voltage of the capacitor C31 of the step-up inverter 3 at the time of an instantaneous power failure of the commercial power source 1 or an instantaneous voltage drop. The voltage of the capacitor C31 of the step-up inverter 3 is designed to be, for example, 247V if the commercial power supply 1 is a normal voltage.

瞬時停電時（図２では、電源電圧０％）には、コンデンサＣ３１の電圧が、瞬時停電前の２４７．５Ｖから、図２に示すように暫時減少し、１００ｍｓでは、高圧放電灯７が消灯する。   At the time of an instantaneous power failure (power supply voltage 0% in FIG. 2), the voltage of the capacitor C31 decreases for a while as shown in FIG. 2 from 247.5V before the instantaneous power failure, and at 100 ms, the high-pressure discharge lamp 7 is turned off. To do.

瞬時電圧降下時で、電源電圧が定格電圧の３０％に降下する場合は、瞬時停電時とほぼ同様にコンデンサＣ３１の電圧は変化し、やはり１００ｍｓでは、高圧放電灯７が消灯する。このように、瞬時停電ではなく、瞬時電圧降下でも高圧放電灯７は消灯するので、検出回路９により瞬時電圧降下を検出して、電力切替部１０ａにより、オン期間の短いデューティ制御信号によりＦＥＴＱ４１の制御を所定時間行うことが有効である。   When the power supply voltage drops to 30% of the rated voltage when the instantaneous voltage drops, the voltage of the capacitor C31 changes in substantially the same way as during the instantaneous power failure, and the high-pressure discharge lamp 7 is turned off again at 100 ms. Thus, since the high-pressure discharge lamp 7 is extinguished not by an instantaneous power failure but by an instantaneous voltage drop, the instantaneous voltage drop is detected by the detection circuit 9, and the FET Q41 is detected by the power switching unit 10a by the duty control signal having a short ON period. It is effective to perform the control for a predetermined time.

また、瞬時電圧降下時で、電源電圧が定格電圧の６０％に降下する場合、コンデンサＣ３１の電圧は、１秒経過しても１４３Ｖある。高圧放電灯７は、その後消灯する。   Further, when the power supply voltage drops to 60% of the rated voltage at the time of instantaneous voltage drop, the voltage of the capacitor C31 is 143 V even after 1 second. The high pressure discharge lamp 7 is then turned off.

瞬時停電時又は瞬時電圧降下時に、検出回路９の検出する昇圧インバータ３のコンデンサＣ３１の電圧が、図２の例では、例えば、１８０Ｖに低下した場合に（この１８０Ｖは、昇圧インバータ３のコンデンサＣ３１の電圧の設計値約２４７Ｖに対して約７３％に相当する）、電力切替部１０ａが、オン期間の短いデューティ制御信号によりＦＥＴＱ４１の制御を所定時間行うようにする。   In the example of FIG. 2, for example, when the voltage of the capacitor C31 of the booster inverter 3 detected by the detection circuit 9 drops to 180 V in the case of an instantaneous power failure or an instantaneous voltage drop, this 180 V is the capacitor C31 of the booster inverter 3. The power switching unit 10a controls the FET Q41 for a predetermined time by a duty control signal having a short ON period.

そのようにすれば、図２の例で、電源電圧０％（瞬時停電時）の場合、瞬時停電発生より２０ｍｓ弱で電力切替部１０ａが動作する。   In that case, in the example of FIG. 2, when the power supply voltage is 0% (during an instantaneous power failure), the power switching unit 10a operates in less than 20 ms from the occurrence of the instantaneous power failure.

また、図２の例で、電源電圧３０％（瞬時電圧降下時）の場合、瞬時電圧降下発生より２０ｍｓ強で電力切替部１０ａが動作する。   Further, in the example of FIG. 2, when the power supply voltage is 30% (at the time of instantaneous voltage drop), the power switching unit 10a operates in 20 ms or more after the occurrence of the instantaneous voltage drop.

また、図２の例で、電源電圧６０％（瞬時電圧降下時）の場合、瞬時電圧降下発生より３０ｍｓ弱で電力切替部１０ａが動作する。   In the example of FIG. 2, when the power supply voltage is 60% (at the time of instantaneous voltage drop), the power switching unit 10a operates in less than 30 ms from the occurrence of the instantaneous voltage drop.

オン期間の短いデューティ制御信号によりＦＥＴＱ４１の制御を所定時間行うことにより、高圧放電灯７の瞬時停電からの消灯までの時間を、どの程度長くできるか測定した一例を以下に示す。   An example of measuring how long the time from the momentary power failure of the high-pressure discharge lamp 7 to extinguishing can be measured by performing control of the FET Q41 for a predetermined time using a duty control signal with a short ON period is shown below.

図３は、高圧放電灯７にＨＣＩ−ＴＣ／Ｅ ７０Ｗ、高圧放電灯点灯装置１００に７０Ｗのものを使用して、瞬時停電時にランプ点灯を維持できる時間を測定した結果を示す。尚、図３で、瞬時停電から消灯までの時間は、定常点灯時を１００としたときの割合で示す。   FIG. 3 shows the results of measuring the time during which a lamp can be lit during an instantaneous power failure using HCI-TC / E 70 W for the high pressure discharge lamp 7 and 70 W for the high pressure discharge lamp lighting device 100. In FIG. 3, the time from the momentary power failure to extinguishing is shown as a ratio when the steady lighting is set to 100.

図３に示すように、出力電力が９０Ｗでは、瞬時停電から消灯までの時間は、定常点灯時の６４％に低下する。   As shown in FIG. 3, when the output power is 90 W, the time from the momentary power failure to extinguishing is reduced to 64% of the steady lighting.

また、出力電力が５４Ｗでは、瞬時停電から消灯までの時間は、定常点灯時の１５５％に増加する。   When the output power is 54 W, the time from the momentary power failure to extinguishing increases to 155% during steady lighting.

また、出力電力が３６Ｗ（定常点灯時の１／２）では、瞬時停電から消灯までの時間は、定常点灯時の２００％（２倍）に増加する。   In addition, when the output power is 36 W (1/2 of steady lighting), the time from the momentary power failure to extinguishing increases to 200% (double) of steady lighting.

このように、高圧放電灯点灯装置１００の出力電力を落とせば、瞬時停電から消灯までの時間を延ばすことができる。   Thus, if the output power of the high-pressure discharge lamp lighting device 100 is reduced, the time from the momentary power failure to the extinction can be extended.

但し、高圧放電灯点灯装置１００の出力電力は、定常点灯時の出力電力の１／２の出力電力を最小値とする。   However, the output power of the high pressure discharge lamp lighting device 100 is set to a minimum value that is 1/2 of the output power during steady lighting.

我が国の電力事情からすると、瞬時電圧降下の持続時間は最大電源周波数の３サイクルである。従って、瞬時電圧降下の持続時間は、５０Ｈｚで最大６０ｍｓ、６０Ｈｚで最大５０ｍｓである。本実施の形態では、上記のとおり、瞬時電圧降下発生から２０ｍｓ乃至３０ｍｓ経過後に、電力切替部１０ａが動作するので、上記我が国の電力事情における瞬時電圧降下に対応可能である。   According to the power situation in Japan, the duration of the instantaneous voltage drop is 3 cycles of the maximum power supply frequency. Accordingly, the duration of the instantaneous voltage drop is a maximum of 60 ms at 50 Hz and a maximum of 50 ms at 60 Hz. In the present embodiment, as described above, since the power switching unit 10a operates after 20 ms to 30 ms have elapsed since the occurrence of the instantaneous voltage drop, it is possible to cope with the instantaneous voltage drop in the above Japanese power situation.

実施の形態１を示す図で、高圧放電灯点灯装置１００の回路図である。FIG. 3 is a diagram illustrating the first embodiment and is a circuit diagram of the high-pressure discharge lamp lighting device 100. 実施の形態１を示す図で、瞬時停電（電源電圧０％）又は瞬時電圧降下（電源電圧３０％、６０％）が発生した場合の、昇圧インバータ３のコンデンサＣ３１の電圧の変化を示す図（（ａ）はコンデンサＣ３１の電圧の変化のデータ、（ｂ）そのグラフ）である。The figure which shows Embodiment 1 is a figure which shows the change of the voltage of the capacitor | condenser C31 of the step-up inverter 3 when instantaneous power failure (power supply voltage 0%) or instantaneous voltage drop (power supply voltage 30%, 60%) occurs. (A) is the data of the change of the voltage of the capacitor | condenser C31, (b) is the graph. 実施の形態１を示す図で、ランプの出力電力を変化させて瞬時停電時にランプ点灯を維持できる時間を測定した結果を示す図である。It is a figure which shows Embodiment 1, and is a figure which shows the result of having measured the time which can maintain lamp lighting at the time of an instantaneous power failure by changing the output electric power of a lamp | ramp. 従来の放電灯点灯装置の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the conventional discharge lamp lighting device.

符号の説明Explanation of symbols

１ 商用電源、２ 整流回路、３ 昇圧インバータ、４ 降圧インバータ、５ 点灯回路、６ 始動パルス発生回路、７ 高圧放電灯、９ 検出回路、１０ 制御回路、１０ａ 電力切替部、１００ 高圧放電灯点灯装置、１０１ 商用電源、１０２ スイッチ、１０３ 整流平滑回路、１０４ チョッパ回路、１０５ フルブリッジインバータ回路、１０６ 始動器、１０７ 放電灯、１０８ 入力電圧検出回路。   DESCRIPTION OF SYMBOLS 1 Commercial power supply, 2 Rectifier circuit, 3 Booster inverter, 4 Buck inverter, 5 Lighting circuit, 6 Start pulse generation circuit, 7 High pressure discharge lamp, 9 Detection circuit, 10 Control circuit, 10a Power switching part, 100 High pressure discharge lamp lighting device , 101 Commercial power supply, 102 switch, 103 rectification smoothing circuit, 104 chopper circuit, 105 full bridge inverter circuit, 106 starter, 107 discharge lamp, 108 input voltage detection circuit.

Claims (3)

コンデンサを含む昇圧インバータと、スイッチング素子を含む降圧インバータとを有する高圧放電灯を点灯させる高圧放電灯点灯装置において、
前記昇圧インバータの前記コンデンサの電圧を検出する検出回路と、
前記降圧インバータの前記スイッチング素子を制御する制御回路と、
この制御回路に設けられ、前記検出回路の検出する前記コンデンサの電圧が所定電圧以下に低下する場合に、前記高圧放電灯への出力電力が定常時より低い所定値になるように前記降圧インバータの前記スイッチング素子を制御する電力切替部とを備えたことを特徴とする高圧放電灯点灯装置。 In a high pressure discharge lamp lighting device for lighting a high pressure discharge lamp having a step-up inverter including a capacitor and a step-down inverter including a switching element,
A detection circuit for detecting a voltage of the capacitor of the boost inverter;
A control circuit for controlling the switching element of the step-down inverter;
Provided in this control circuit, when the voltage of the capacitor detected by the detection circuit drops below a predetermined voltage, the output of the step-down inverter is set so that the output power to the high-pressure discharge lamp becomes a predetermined value lower than that in a steady state. A high pressure discharge lamp lighting device comprising: a power switching unit that controls the switching element. 前記コンデンサの電圧の前記所定電圧は、設計値の７３％前後とすることを特徴とする請求項１記載の高圧放電灯点灯装置。   The high-pressure discharge lamp lighting device according to claim 1, wherein the predetermined voltage of the capacitor voltage is about 73% of a design value. 前記高圧放電灯への出力電力の定常時より低い所定値は、最小値が定常点灯時の１／２前後とすることを特徴とする請求項１又は請求項２記載の高圧放電灯点灯装置。   The high pressure discharge lamp lighting device according to claim 1 or 2, wherein the predetermined value lower than the steady state of the output power to the high pressure discharge lamp has a minimum value of about 1/2 of the steady state lighting.
JP2006080572A 2006-03-23 2006-03-23 High-pressure discharge lamp lighting device Pending JP2007257989A (en)

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DE102007012077A DE102007012077A1 (en) 2006-03-23 2007-03-13 Starting and operation device for high pressure discharge lamp, has condenser with step-up transformer and switching component with step-down controller which remain switched on and device is equipped with measuring circuit

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WO2009145050A1 (en) 2008-05-27 2009-12-03 パナソニック電工株式会社 High-voltage discharge lamp lighting device and lighting fixture
EP2154936A2 (en) 2008-08-15 2010-02-17 Panasonic Electric Works Co., Ltd. High pressure discharge lamp lighting device and luminaire
JP2011138626A (en) * 2009-12-25 2011-07-14 Mitsubishi Electric Corp Discharge lamp lighting device and lighting fixture
JP2014123153A (en) * 2014-03-13 2014-07-03 Seiko Epson Corp Projection type display device and control method thereof
JP2014142671A (en) * 2014-04-30 2014-08-07 Seiko Epson Corp Projection type display device and control method thereof
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JPH05283185A (en) * 1992-03-30 1993-10-29 Toshiba Lighting & Technol Corp Discharge lamp lighting device
JPH06168788A (en) * 1992-11-27 1994-06-14 Eye Lighting Syst Corp Discharge lamp lighting device
JP2004023952A (en) * 2002-06-19 2004-01-22 Aishin:Kk Power failure detection circuit
JP2005108601A (en) * 2003-09-30 2005-04-21 Daihen Corp Discharge lamp lighting device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009145050A1 (en) 2008-05-27 2009-12-03 パナソニック電工株式会社 High-voltage discharge lamp lighting device and lighting fixture
JP2009289480A (en) * 2008-05-27 2009-12-10 Panasonic Electric Works Co Ltd High-pressure discharge lamp lighting device, and luminaire
US8593077B2 (en) 2008-05-27 2013-11-26 Panasonic Corporation High-voltage discharge lamp lighting device and lighting fixture
EP2154936A2 (en) 2008-08-15 2010-02-17 Panasonic Electric Works Co., Ltd. High pressure discharge lamp lighting device and luminaire
JP2011138626A (en) * 2009-12-25 2011-07-14 Mitsubishi Electric Corp Discharge lamp lighting device and lighting fixture
JP2014123153A (en) * 2014-03-13 2014-07-03 Seiko Epson Corp Projection type display device and control method thereof
JP2014142671A (en) * 2014-04-30 2014-08-07 Seiko Epson Corp Projection type display device and control method thereof
JP5842956B2 (en) * 2014-06-16 2016-01-13 ウシオ電機株式会社 Discharge lamp lighting device

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