WO2010134397A1 - 高圧放電灯点灯装置 - Google Patents
高圧放電灯点灯装置 Download PDFInfo
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- WO2010134397A1 WO2010134397A1 PCT/JP2010/056437 JP2010056437W WO2010134397A1 WO 2010134397 A1 WO2010134397 A1 WO 2010134397A1 JP 2010056437 W JP2010056437 W JP 2010056437W WO 2010134397 A1 WO2010134397 A1 WO 2010134397A1
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- WIPO (PCT)
- Prior art keywords
- discharge lamp
- pressure discharge
- light source
- high pressure
- voltage
- Prior art date
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Classifications
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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
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
- H05B41/2883—Load circuits; Control thereof the control resulting from an action on the static converter the controlled element being a DC/AC converter in the final stage, e.g. by harmonic mode starting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
-
- 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
Definitions
- the present invention relates to a high pressure discharge lamp lighting device for lighting a high pressure discharge lamp.
- a light source for starting that assists the starting of a high-pressure discharge lamp is known (for example, Patent Document 1).
- a high-pressure discharge lamp is composed of an arc tube that serves as a main light source and an auxiliary starting light source.
- a starting light source is described.
- the electrodes are capacitively coupled. When a high voltage is applied, dielectric breakdown occurs, glow discharge starts, and ultraviolet rays are generated. The ultraviolet light excites the starting gas inside the arc tube, and the high-pressure discharge lamp is easily started.
- FIG. 7 shows a conventional high pressure discharge lamp lighting device.
- the high-pressure discharge lamp 50 comprises an arc tube 51 and a starting light source 52.
- the apparatus includes a step-down chopper circuit 20, a full bridge circuit 30, and a resonance circuit 80.
- the current flowing through the arc tube 51 is controlled by the step-down chopper circuit 20 and the current is AC inverted by the full bridge circuit 30 so that the AC current has a relatively low frequency (eg, about 50 to 400 Hz). Is supplied to the arc tube 51.
- the full bridge circuit 30 When starting the arc tube 51, the full bridge circuit 30 is driven at a resonance frequency of the resonance circuit 80 or a frequency close to an odd number of the resonance frequency, and a high voltage of several kV is generated in the resonance circuit 80.
- the starting light source 52 emits light by this high voltage, and the arc tube 51 is started by the ultraviolet irradiation and the high voltage.
- FIG. 8 shows voltage waveforms applied to the starting light source 52 in the above example.
- the figure shows the waveform when the drive frequency of the full bridge circuit 30 is 1/3 of the resonance frequency of the inductor 81 and the capacitor 82.
- the resonance frequency of the resonance circuit 80 also varies greatly.
- the conventional example for example, Patent Document 2
- the voltage generated in the resonance circuit 80 is detected while finely changing the operating frequency of the full bridge circuit 30, and the result is detected by the control circuit ( The operation frequency of the full bridge circuit 30 is tuned so that the voltage generated in the resonance circuit 80 is optimized.
- the resonant circuit 80 including the inductor 81 and the capacitor 82 is operated in a substantially resonant state, so that a high voltage is applied to the inductor 81 and the capacitor 82 and a large current flows. Therefore, a large core size is required so that the inductor 81 does not saturate, and a plurality of capacitors are connected in series because the capacitor 82 needs to have a high breakdown voltage. Since the high voltage generated by the resonance circuit 80 has a large energy, the creepage distance and the spatial distance must be designed to be large in order to prevent dielectric breakdown in the high pressure discharge lamp lighting device and to prevent a fire accident. There wasn't. As a result, there is a problem that the apparatus becomes large.
- an object of the present invention is to provide a small and simple device in a high pressure discharge lamp lighting device for lighting a high pressure discharge lamp using a starting light source.
- a high pressure discharge lamp lighting device including a lighting circuit for supplying AC power to the high pressure discharge lamp (50) is provided.
- the high-pressure discharge lamp comprises the arc tube (51) and a starting light source (52) that is installed in the vicinity thereof to assist the starting of the arc tube, and the starting light source has a pair of electrodes.
- the electrodes are capacitively coupled, and the lighting circuit includes a bridge unit (30, 70) for performing an inversion operation of the lamp current, a current limiting unit (20, 75) for limiting the lamp current, and an igniter for generating a starting voltage.
- the unit (40) is configured to apply a voltage including a frequency component higher than a lighting frequency at the time of steady lighting of the arc tube to the starting light source.
- the starting light source is connected in parallel to the arc tube
- the igniter section includes a transformer (41) and a capacitor (42), the transformer is connected in series to the high pressure discharge lamp, and the capacitor is connected to the series circuit of the transformer and the high pressure discharge lamp. It was set as the structure connected with respect to parallel.
- the bridge portion is composed of a full bridge circuit (30) and includes an inductor (60) connected between the bridge portion and the igniter portion.
- a high voltage discharge lamp 50 that is, the arc tube 51 and the light source 52 for starting
- a high voltage discharge lamp 50 is applied with a high voltage to ensure the starting operation.
- the amount of ultraviolet light generated from the starting light source 52 depends on the current flowing therethrough, it is important not to increase the applied voltage but to increase the flowing current.
- the starting light source 52 is capacitive, the current can be increased by increasing the frequency of the applied voltage (current to be applied).
- the high-pressure discharge lamp lighting device generally includes a bridge unit that performs a reversal operation of the lamp current, a current limiting unit that limits the lamp current, and an igniter unit that generates a starting voltage.
- the above-described units are configured so that a voltage including a frequency component higher than the lighting frequency is applied to the starting light source 52.
- FIG. 1 shows a circuit configuration diagram of a high pressure discharge lamp lighting device according to a first embodiment.
- the apparatus shown in the figure includes a step-down chopper circuit 20 as a current limiting unit, a full bridge circuit 30 as a bridge unit, and an igniter 40.
- the full bridge circuit 30 is driven by a driver (not shown) at a frequency of several tens to several hundreds of Hz during normal lighting, and is driven at several hundreds of Hz to several tens of kHz during startup. That is, the voltage applied to the starting light source 52 has the waveform shown in FIG.
- the starting light source 52 breaks down with the output voltage of the igniter 40. Thereafter, the glow discharge of the starting light source 52 is sustained by the voltage supplied from the bridge circuit 30. Once the pair of electrodes of the starting light source 52 are dielectrically broken, they are capacitively coupled. Accordingly, the higher the frequency component of the voltage supplied from the bridge circuit 30, the easier the current flows to the starting light source 52, and the ultraviolet rays are efficiently generated. The larger the amount of ultraviolet light generated from the starting light source 52, the more starting gas inside the arc tube 51 is excited, and the arc tube 51 can be started even at a relatively low starting voltage.
- the output voltage generated by the igniter circuit 40 is the starting voltage generated by the conventional resonance circuit (for example, the resonance circuit 80 in FIG. 8). Compared to, it requires less energy. That is, the igniter circuit can be reduced in size, which is advantageous.
- FIG. 3 shows a circuit configuration diagram of the second embodiment.
- the high pressure discharge lamp lighting device shown in FIG. 1 includes a step-down chopper 20 as a current limiting unit, a full bridge circuit 30 as a bridge unit, an inductor 60, and an igniter 40.
- the full bridge circuit 30 is driven in the vicinity of an even fraction of the resonance frequency of the inductor 60 and the capacitor 42 by a driver (not shown).
- FIG. 4 shows the voltage applied to the start light source 52 at the start. The figure shows a waveform when the drive frequency of the full bridge circuit 30 is set to 1 ⁇ 4 of the resonance frequency of the inductor 60 and the capacitor 42.
- the voltage generated and the current flowing through the inductor 60 and the capacitor 42 are small, so that these parts can be small and inexpensive. Even if the value of the inductor 60 varies, the driving frequency of the full bridge circuit 30 is far from the resonance frequency of the inductor 60 and the capacitor 42, so that the generated voltage variation is small. Therefore, it is not necessary to finely tune the operating frequency of the full bridge circuit 30, and the control configuration can be simplified, which is advantageous.
- FIG. 5 shows a circuit configuration diagram of the third embodiment.
- the high pressure discharge lamp lighting device shown in the figure includes a half bridge circuit 70 as a bridge portion, an inductor 75 as a current control portion, and an igniter circuit 40.
- a current flows from the arc tube 51 toward the winding 41 b of the transformer 41.
- the switch element 72 is turned on and off at a high frequency with the switch element 71 turned off, a current flows from the winding 41 b toward the arc tube 51.
- the arc tube 51 is AC-lit at a frequency at which the switch elements 71 and 72 are operated alternately.
- the switch elements 71 and 72 are driven in the vicinity of an odd number of the resonance frequency of the inductor 75 and the capacitor 42 by a driver (not shown). Inductor 75 and capacitor 42 immediately after the switch element 71 is switched from the ON state to the switch element 72 is switched to the ON state or immediately after the switch element 72 is switched from the ON state to the switch element 71 is switched to the ON state. An oscillating voltage is generated.
- the frequency at which the switch elements 71 and 72 operate alternately at the time of starting the arc tube 51 is made higher than that at the time of steady lighting, a high frequency component can be further applied to the starting light source 52, and the starting operation can be further promoted. .
- Example 4 The circuit configuration of the present embodiment is the same as that of FIG. 5 of the third embodiment, but the operations of the switch elements 71 and 72 are different.
- the switch elements 71 and 72 are driven by an unillustrated driver in the vicinity of an even fraction of the resonance frequency of the inductor 75 and the capacitor 42, and are alternately turned on and off.
- the voltage applied to the starting light source 52 is the same as that in FIG.
- a high-frequency oscillating voltage is generated by the inductor 75 and the capacitor 42, but the voltage is small, and both parts may be small, which is advantageous.
- the high pressure discharge lamp lighting device can be configured with a simple circuit and control, and using small and inexpensive components.
- DC power supply 20 Step-down chopper circuit 30. Full bridge circuit 40. Igniter circuit 50. High pressure discharge lamp 51. Arc tube 52. Starting light source 60. Inductor 70. Half-bridge circuit 75. Inductor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
発光管51の定常点灯時には、降圧チョッパー回路20によって発光管51に流れる電流が制御され、フルブリッジ回路30によってその電流が交流反転されて比較的低周波数(例えば、50~400Hz程度)の交流電流が発光管51に供給される。
発光管51の始動時には、フルブリッジ回路30が共振回路80の共振周波数又は共振周波数の奇数分の1に近い周波数で駆動され、共振回路80に数kVの高電圧が発生する。この高電圧によって始動用光源52が発光し、その紫外線照射と高電圧によって発光管51の始動が行なわれる。
そして共振回路80の発生する高電圧はエネルギーが大きいために、高圧放電灯点灯装置内での絶縁破壊を防止し、発火事故を防止するために、沿面距離・空間距離を大きく設計しなければならなかった。これにより装置が大型化するという問題があった。
そこで、始動用光源を用い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小型で簡素な構成の装置を提供することを目的とする。
さらに、ブリッジ部がフルブリッジ回路(30)からなり、ブリッジ部とイグナイタ部の間に接続されたインダクタ(60)を備える構成とした。
図1に第1の実施例による高圧放電灯点灯装置の回路構成図を示す。同図の装置は、電流制限部として降圧チョッパー回路20、ブリッジ部としてフルブリッジ回路30、及びイグナイタ40を備える。
フルブリッジ回路30はドライバ(不図示)によって通常点灯時は数十Hzから数百Hzで駆動され、始動時は数百Hzから数十kHzで駆動される。即ち、始動用光源52にかかる電圧は図2に示す波形となる。
図3に第2の実施例の回路構成図を示す。同図の高圧放電灯点灯装置は、電流制限部として降圧チョッパー20、ブリッジ部としてフルブリッジ回路30、インダクタ60、及びイグナイタ40を備える。
始動時に、フルブリッジ回路30はドライバ(不図示)によってインダクタ60とコンデンサ42の共振周波数の偶数分の1近傍で駆動される。図4に始動時に始動用光源52に印加される電圧を示す。同図はフルブリッジ回路30の駆動周波数をインダクタ60とコンデンサ42の共振周波数の1/4とした場合の波形である。
そして、インダクタ60の値がばらついても、フルブリッジ回路30の駆動周波数がインダクタ60とコンデンサ42の共振周波数から離れているため、発生する電圧のばらつきは少ない。従って、フルブリッジ回路30の動作周波数を細かくチューニングする必要がなく、制御構成を簡素化でき、有利である。
図5に第3の実施例の回路構成図を示す。同図の高圧放電灯点灯装置は、ブリッジ部としてハーフブリッジ回路70、電流制御部としてインダクタ75、及びイグナイタ回路40を備える。
発光管51の通常点灯時について、スイッチ素子72をOFFした状態でスイッチ素子71を高周波でON-OFFすると、発光管51からトランス41の巻線41bの方向へ電流が流れる。逆にスイッチ素子71をOFFした状態で、スイッチ素子72を高周波でON-OFFすると、巻線41bから発光管51の方向へ電流が流れる。スイッチ素子71と72を交互に動作させる周波数で、発光管51は交流点灯する。
スイッチ素子71と72の間の動作切り替わり時に、インダクタ75とコンデンサ42で発生する振動電圧は、従来例の共振回路とは異なり、高電圧とならないため、インダクタ75及びコンデンサ42はともに小型の部品で済む。
さらに発光管51の始動時に、スイッチ素子71と72が交互に動作する周波数を定常点灯時よりも高くすれば、さらに始動用光源52に高周波成分を印加することができ、始動動作をより促進できる。
本実施例の回路構成は実施例3の図5と同様であるが、スイッチ素子71及び72の動作が異なる。
発光管51の始動時に、スイッチ素子71及び72は図示しないドライバによって、インダクタ75とコンデンサ42の共振周波数の偶数分の1近傍で駆動され、交互にON-OFFされる。始動用光源52にかかる電圧は実施例2の図4と同様である。
実施例2と同様に、インダクタ75とコンデンサ42で高周波の振動電圧が発生するが、その電圧は小さく、両部品は小型なものでよく、有利である。
20.降圧チョッパー回路
30.フルブリッジ回路
40.イグナイタ回路
50.高圧放電灯
51.発光管
52.始動用光源
60.インダクタ
70.ハーフブリッジ回路
75.インダクタ
Claims (3)
- 高圧放電灯(50)に交流電力を供給する点灯回路を備えた高圧放電灯点灯装置において、該高圧放電灯が発光管(51)及びその近傍に設置されて該発光管の始動を補助する始動用光源(52)からなり、該始動用光源は一対の電極を有し、該電極間が容量結合され、
前記点灯回路が、ランプ電流の反転動作を行なうブリッジ部(30、70)、該ランプ電流を制限する電流制限部(20、75)、及び始動電圧を発生するイグナイタ部(40)からなり、始動時に、前記発光管の定常点灯時の点灯周波数よりも高い周波数成分を含む電圧を前記始動用光源に印加するように構成された高圧放電灯点灯装置。 - 請求項1記載の高圧放電灯点灯装置において、
前記始動用光源が前記発光管に並列接続され、
前記イグナイタ部がトランス(41)及びコンデンサ(42)を備え、該トランスが前記高圧放電灯に直列接続され、該コンデンサが該トランスと該高圧放電灯の直列回路に対して並列接続される高圧放電灯点灯装置。 - 請求項2の高圧放電灯点灯装置において、前記ブリッジ部がフルブリッジ回路(30)からなり、該ブリッジ部と前記イグナイタ部の間に接続されたインダクタ(60)を備えた高圧放電灯点灯装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2760627A CA2760627A1 (en) | 2009-05-21 | 2010-04-09 | Ballast for high pressure discharge lamp |
EP10777632.0A EP2434843A4 (en) | 2009-05-21 | 2010-04-09 | LIGHTING UNIT WITH HIGH VOLTAGE DISCHARGE LAMP |
CN2010800191742A CN102415218A (zh) | 2009-05-21 | 2010-04-09 | 高压放电灯点灯装置 |
US13/262,923 US20120025731A1 (en) | 2009-05-21 | 2010-04-09 | Ballast for high pressure discharge lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-122844 | 2009-05-21 | ||
JP2009122844A JP4636450B2 (ja) | 2009-05-21 | 2009-05-21 | 高圧放電灯点灯装置 |
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WO2010134397A1 true WO2010134397A1 (ja) | 2010-11-25 |
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PCT/JP2010/056437 WO2010134397A1 (ja) | 2009-05-21 | 2010-04-09 | 高圧放電灯点灯装置 |
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Country | Link |
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US (1) | US20120025731A1 (ja) |
EP (1) | EP2434843A4 (ja) |
JP (1) | JP4636450B2 (ja) |
CN (1) | CN102415218A (ja) |
CA (1) | CA2760627A1 (ja) |
WO (1) | WO2010134397A1 (ja) |
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CN103547050B (zh) * | 2012-07-16 | 2015-11-25 | 台达电子工业股份有限公司 | 点灯系统与点灯方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01134848A (ja) | 1987-10-22 | 1989-05-26 | Gte Prod Corp | 紫外線始動源を備えたアーク放電ランプ |
JP2005019040A (ja) * | 2003-06-24 | 2005-01-20 | Ushio Inc | 光源装置 |
JP2005520294A (ja) | 2002-03-13 | 2005-07-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 高圧ランプを点弧する電子回路、および、方法、並びに、照明装置 |
JP2005203185A (ja) * | 2004-01-14 | 2005-07-28 | Toshiba Lighting & Technology Corp | 高圧放電灯点灯装置 |
JP2007005217A (ja) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | 放電灯点灯装置及び画像表示装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0314077B1 (en) * | 1987-10-27 | 1994-01-26 | Matsushita Electric Works, Ltd. | Discharge lamp driving circuit |
US5932976A (en) * | 1997-01-14 | 1999-08-03 | Matsushita Electric Works R&D Laboratory, Inc. | Discharge lamp driving |
JP3829507B2 (ja) * | 1997-12-12 | 2006-10-04 | 松下電工株式会社 | 電子バラストおよびhidランプ制御回路 |
JP4568989B2 (ja) * | 2000-11-15 | 2010-10-27 | 東芝ライテック株式会社 | 高圧放電ランプおよび照明装置 |
-
2009
- 2009-05-21 JP JP2009122844A patent/JP4636450B2/ja not_active Expired - Fee Related
-
2010
- 2010-04-09 CN CN2010800191742A patent/CN102415218A/zh active Pending
- 2010-04-09 US US13/262,923 patent/US20120025731A1/en not_active Abandoned
- 2010-04-09 CA CA2760627A patent/CA2760627A1/en not_active Abandoned
- 2010-04-09 WO PCT/JP2010/056437 patent/WO2010134397A1/ja active Application Filing
- 2010-04-09 EP EP10777632.0A patent/EP2434843A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01134848A (ja) | 1987-10-22 | 1989-05-26 | Gte Prod Corp | 紫外線始動源を備えたアーク放電ランプ |
JP2005520294A (ja) | 2002-03-13 | 2005-07-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 高圧ランプを点弧する電子回路、および、方法、並びに、照明装置 |
JP2005019040A (ja) * | 2003-06-24 | 2005-01-20 | Ushio Inc | 光源装置 |
JP2005203185A (ja) * | 2004-01-14 | 2005-07-28 | Toshiba Lighting & Technology Corp | 高圧放電灯点灯装置 |
JP2007005217A (ja) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | 放電灯点灯装置及び画像表示装置 |
Non-Patent Citations (1)
Title |
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See also references of EP2434843A4 |
Also Published As
Publication number | Publication date |
---|---|
JP4636450B2 (ja) | 2011-02-23 |
CA2760627A1 (en) | 2010-11-25 |
JP2010272338A (ja) | 2010-12-02 |
CN102415218A (zh) | 2012-04-11 |
EP2434843A4 (en) | 2013-05-22 |
EP2434843A1 (en) | 2012-03-28 |
US20120025731A1 (en) | 2012-02-02 |
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