WO2007138969A1 - 放電灯点灯装置及び照明器具 - Google Patents
放電灯点灯装置及び照明器具 Download PDFInfo
- Publication number
- WO2007138969A1 WO2007138969A1 PCT/JP2007/060585 JP2007060585W WO2007138969A1 WO 2007138969 A1 WO2007138969 A1 WO 2007138969A1 JP 2007060585 W JP2007060585 W JP 2007060585W WO 2007138969 A1 WO2007138969 A1 WO 2007138969A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge lamp
- voltage
- section
- intensity discharge
- frequency
- Prior art date
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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/382—Controlling the intensity of light during the transitional start-up phase
- H05B41/388—Controlling the intensity of light during the transitional start-up phase for a transition from glow to arc
-
- 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 discharge lamp lighting device for lighting a high-intensity discharge lamp, and a lighting fixture using the same.
- a high-intensity discharge lamp can obtain a high luminous flux with a compact shape and can easily control light distribution close to a point light source, and thus has been widely used in recent years as an alternative to incandescent lamps and halogen lamps. It was.
- There is a discharge lamp lighting device that operates a high-intensity discharge lamp by switching a DC voltage at a high frequency to turn on the high-intensity discharge lamp and converting it to a low-frequency rectangular wave through an inductor or a capacitor.
- the arc discharge becomes unstable due to the acoustic resonance phenomenon, and flickering may occur or the lamp may turn off. Can be maintained stably.
- a high-intensity discharge lamp requires dielectric breakdown by applying a high impulse voltage of several KV to several tens of KV when starting.
- dielectric breakdown between the electrodes occurs, it is necessary to shift to arc discharge through subsequent glow discharge, supplying energy under optimum conditions according to each operation state, and starting State power It is necessary to control to enable smooth transition to a steady lighting state.
- the present invention has been made in view of such points, and relates to a section in which a high voltage is applied by a resonance operation at the time of start-up, a section in which a low-frequency rectangular wave voltage or a DC voltage is applied, and a repetition period thereof.
- the power supply voltage of the DC power supply (smoothing capacitor 3) is converted into a voltage so that the high-intensity discharge lamp 7 is stably lit.
- the DC CAC DC converter 4 includes a DCZAC inverter 5 that converts the DC voltage into an AC voltage, and a resonance circuit including at least one capacitor 66 and an inductor 65 as shown in FIG. As shown in Fig. 7, when the high-intensity discharge lamp 7 is started, the DCZAC inverter 5 outputs a high-frequency voltage to start the circuit 6.
- the DCZAC inverter 5 applies the low-frequency rectangular wave voltage or DC voltage to the high-intensity discharge lamp 7 via the starting circuit 6. Apply to section B alternately.
- the DCZAC inverter 5 applies a low-frequency rectangular wave voltage to the high-intensity discharge lamp 7 via the start circuit 6 and applies a high voltage by resonance operation A Is set to a time sufficient for dielectric breakdown of the high-intensity discharge lamp with initial aging, and the high-voltage generation section A and the low-frequency rectangular wave voltage or direct-current voltage generation section B are output alternately. It is characterized in that it is set to a time sufficient for dielectric breakdown of the high-intensity discharge lamp at the end stage.
- FIG. 1 is a circuit diagram of a first embodiment of the present invention.
- FIG. 2 is a circuit diagram of a conventional impulse starting circuit.
- FIG. 3 is an operation waveform diagram of the starting circuit of FIG.
- FIG. 4 is a circuit diagram of a resonant boost start circuit used in the present invention.
- FIG. 5 is an operation waveform diagram of the starting circuit of FIG.
- FIG. 6 is an operation waveform diagram of the starting circuit of FIG.
- FIG. 7 is an operation waveform diagram of the first embodiment of the present invention.
- FIG. 8 is an explanatory diagram of the first embodiment of the present invention.
- FIG. 9 is an explanatory diagram of the first embodiment of the present invention.
- FIG. 10 is an explanatory diagram of a second embodiment of the present invention.
- FIG. 11 is an explanatory diagram of a third embodiment of the present invention.
- FIG. 12 is a circuit diagram of a fourth embodiment of the present invention.
- FIG. 1 shows a circuit configuration of a discharge lamp lighting device according to a first embodiment of the present invention.
- the AC power supply that supplies the commercial power supply voltage 1
- the output rectified from the rectifier 2 through the rectifier 2 is smoothed by the capacitor 3, and the DC current or the lamp current necessary to stably light the high-intensity discharge lamp 7 by the DCZDC converter 4 Control lamp power.
- the output controlled to a desired value in this way is converted into a low-frequency rectangular wave output by the DCZAC inverter 5 and supplied to the high-intensity discharge lamp 7.
- this high-intensity discharge lamp 7 requires dielectric breakdown with a high impulse voltage of several KV to several tens of KV when starting.
- a high pressure pulse is generated from the starting circuit 6 to start the high intensity discharge lamp 7.
- the starting process of a high-intensity discharge lamp is characterized by a transition from dielectric breakdown between the electrodes, through subsequent glow discharge to arc discharge, and the optimum conditions for each operating state. It is necessary to control the engine so that it can smoothly shift to the steady state lighting state by supplying energy at the start state.
- a so-called fluorescent lamp is different from a high-intensity discharge lamp in that it can be started at a relatively low voltage of several hundred volts, and that it immediately shifts to a steady discharge state. Therefore, the control in the starting process of high-intensity discharge lamps is the case of fluorescent lamps. Compared with the control in the starting process, the control becomes complicated.
- FIG. 2 shows an example (comparative example) of the starting circuit 6.
- This circuit system uses a pulse transformer to increase the voltage applied to the primary side by several tens to several hundreds and transmit it to the secondary side.
- a high-pressure pulse with a relatively narrow width is supplied to the high-intensity discharge lamp 7.
- Impulse start circuit 64 to be applied.
- the series circuit of the primary side 62a of the capacitor 61 and the pulse transformer 62, the series circuit of the switching element 63, and the series circuit of the secondary side 62b of the high-intensity discharge lamp 7 and the pulse transformer 62 are the outputs of the DCZAC inverter 5 in the preceding stage. It is configured to be connected to the end.
- the voltage charged in the capacitor 61 is discharged at once by the switching element 63 via the primary side 62a of the pulse transformer 62. At this time, the voltage applied to the primary side 62a is increased to several tens to several hundreds times to the secondary side 62b. By transmitting it, it is possible to mark the high-intensity discharge lamp 7 as a high-pressure pulse of several KV to several tens of KV.
- the high-pressure pulse waveform in this case is as shown in Fig. 3 (a), and a relatively narrow pulse, that is, a relatively small pulse energy.
- this high-pressure noise is superimposed on the low-frequency rectangular wave output during stable lighting and supplied to the high-intensity discharge lamp 7 as shown in Fig. 3 (b).
- the point S in Fig. 3 (c) indicates that the high-intensity discharge lamp 7 has broken down and started. After the point S, the high voltage pulse is stopped.
- FIG. 4 shows another example (example) of the starting circuit 6.
- This circuit system consists of an inductor and a capacitor resonance circuit.
- the DCZAC inverter 5 in the previous stage generates a high-frequency voltage near the resonance frequency of the resonance circuit.
- a series circuit of the inductor 65 and the capacitor 66 is connected to the output terminal of the DCZAC inverter 5 in the previous stage, and the high-intensity discharge lamp 7 is connected to the capacitor 66 in parallel.
- a resonant boost voltage is induced at both ends of the inductor 65 or the capacitor 6 6 to several KV It can be applied to high-intensity discharge lamps 7 as high-pressure pulses of up to several tens of KV.
- the high-pressure noise waveform is as shown in Fig. 5 (a), and several pulses are output together.
- the inductor 65 may have a step-up transformer structure such as the pulse transformer 62 described above, and may be applied to the high-intensity discharge lamp 7 as a voltage several times that of the primary side.
- the high-voltage pulse waveform in Fig. 5 (a) is a force that is an example of a waveform in which the operating frequency of the DCZAC inverter 5 is fixed in the vicinity of the resonance frequency of the inductor 65 and the capacitor 66.
- the DCZAC inverter 5's operating frequency may be swept around the resonant frequency for the purpose of absorbing variations in the resonant frequency, and the high-voltage pulse waveform at that time is as shown in Fig. 5 (b).
- this high-voltage pulse is divided into a high-voltage pulse generation section due to the resonant boost voltage and a stable low-frequency rectangular wave output section.
- the lighting state of the high-intensity discharge lamp 7 is determined at point S), and if it is not lit, the subsequent output is stopped. This is because, as described above, it is not preferable from the viewpoint of safety and the durability of parts to always output a high-pressure pulse with a large energy.
- the high-pressure pulse generation period is selected to have a comparatively long period so that any type of high-intensity discharge lamp 7 can be lit. If the high-intensity discharge lamp 7 is isolated by the point S in Fig. 6 (b) and is started and lit, operation continues as a low-frequency rectangular wave output section until stable lighting. At this time, the high-pressure pulse is stopped as in the previous example.
- the impulse starting circuit 64 has a small high-pressure pulse energy, so that the high-intensity discharge lamp 7 is given sufficient dielectric breakdown energy. There may not be.
- the high-pressure pulse energy is large in the resonant boost start circuit 67, the dielectric breakdown of the high-intensity discharge lamp 7 can be ensured.
- the impulse starting circuit 64 is disadvantageous for dielectric breakdown and advantageous for arc discharge transition
- the resonant boosting starting circuit 67 is advantageous for dielectric breakdown and disadvantageous for arc discharge transition. It has both merits and demerits.
- Japanese Patent Application Laid-Open No. 2004-265707 has been proposed as an excellent starting method having both advantages.
- FIG. 7 by repeating the section A of the resonant boost start circuit 67 and the section B of the low-frequency rectangular wave alternately during the section C, the advantages of both of them are linked.
- the dielectric breakdown performance is surely secured by the section A of the resonant boost start circuit 67, and the transition performance to the arc discharge is secured by the section B of the low-frequency rectangular wave.
- the operating frequency of DCZAC inverter 5 is a high frequency of 10 KHz or more (several tens of KHz to several hundred KHz) in section A, and a low frequency or direct current of less than ⁇ (100 Hz to several hundred Hz) in section B.
- section A of the resonant boost start circuit 67 is too short, the disadvantage of the previous impulse start circuit 64 will surface, and the transition to arc discharge will be smooth The insulation breakdown performance will be poor, conversely, the resonant boost start If the section A of the circuit 67 is too long, the disadvantages of the resonant boost start circuit 67 will surface, and the dielectric breakdown will be possible. The transition to arc discharge will not be smooth.
- the high-intensity discharge lamp 7 is relatively easy to start a discharge lamp with initial aging at the time of product shipment (for example, 0 to: LOO time), but at the end of life (for example, 10,000 hours) As the time approaches, the discharge lamp gradually becomes difficult to start due to electrode spatter of the discharge lamp, and so on.
- section A and section C will be described with reference to FIG.
- the required breakdown time for a typical initial aging high intensity discharge lamp and the required breakdown time CC for the high intensity discharge lamp at the end of its life are already clear. Therefore, section A in which high voltage is applied by resonance operation in Fig. 7 is set to about AA required for a typical initial aging high-intensity discharge lamp, and the high voltage generation section in Fig. 7
- the section C in which the low-frequency rectangular wave voltage or DC voltage generation section is alternately output is set to the required breakdown time CC for the high-intensity discharge lamp at the end of its life.
- “about and setting” may be, for example, “Section A is the same as time AA and section C is more than time CC”, or “Section A is more than time AA and section C is the same as time CC”. It may be “Section A is more than time AA and Section C is more than time CC”.
- the low-frequency rectangular wave or DC output section B is set as a cycle corresponding to the low-frequency rectangular wave during normal lighting or a longer cycle.
- the DCZAC inverter 5 is operated at a high frequency (several tens of kilohertz to several hundreds of kilohertz) in the vicinity of the resonance frequency of the starting circuit 6, and a resonant boosted high voltage is output.
- the DCZAC inverter 5 is output. By operating 5 at low frequency (100 Hz to several hundred Hz) or DC operation, it can be output as a low-frequency rectangular wave voltage or DC voltage, and section C is configured by repeating these alternately.
- control circuit 8 is composed of an 8-bit microcomputer or the like, and the operating frequency of the sections A, B, and C and the duration of the sections A, B, and C can be arbitrarily set by a microcomputer program.
- the operation of the DCZAC inverter 5 can be configured not only to fix the frequency in the vicinity of the resonance frequency but also to perform a frequency sweep operation, as described in the prior art.
- the DCZDC converter 4 is composed of a step-down chopper circuit. As described in Japanese Patent Application Laid-Open No. 2004-265707, it can also be constituted by a boosting chopper circuit or a fly knock type buck-boost converter circuit. In this configuration, the DC / DC converter 4 and the DCZAC inverter 5 are configured independently. As described in Japanese Patent Application Laid-Open No. 2004-265707, the DC / DC converter 4 and the DCZAC inverter 5 are configured as a full bridge circuit or a half bridge circuit.
- the second embodiment will be described with reference to FIG.
- the transition to arc discharge seen in the starting circuit 67 is not smooth, and the demerit becomes obvious. Pay close attention to the value.
- the time when the transition to the arc discharge is not smooth is assumed to be D
- the interval A is less than the time D when the transition to the arc discharge is no longer smooth, considering the condition of the first embodiment. There is a need. Therefore, in the present embodiment, the high-frequency operation section A in FIG.
- section B the period corresponding to the low-frequency rectangular wave during normal lighting or a period lower than that is set. The setting of these times is controlled by the microcomputer of the control circuit 8 as in the first embodiment.
- the third embodiment will be described with reference to FIG. Figure 8 above shows sampling for discharge lamps that have been commercialized at the present time, and new discharge lamps with features such as downsizing and high-efficiency like these days are released on the market one after another.
- the time required for the dielectric breakdown after the design time becomes longer.
- a high-intensity discharge lamp sample that can be verified at the time of design (sample data maximum value MX1 for discharge lamps already commercialized, It is necessary to design a slightly longer time in consideration of the risk of discharge lamps that are difficult to break down from the expected maximum sample data MX2) for new discharge lamps expected to be commercialized. It is said.
- section A in FIG. 7 is set too long, the disadvantage of the smooth transition to arc discharge, which was seen in the starting circuit 67, will become apparent, so the value needs to be carefully considered. It is. As a result of the examination, if section A is longer than 10 ms, the transition to arc discharge of the discharge lamp will not be smooth.
- section C in Fig. 7 means that the dielectric breakdown time is set for the discharge lamp at the end of its life, and the expected variation in time is very large.
- a high voltage waveform such as section C accompanied by section A occurs in a section of 1 second or longer because of the reliability of electronic components used in this lighting circuit or the safety of the user. On top of that, it's not good.
- section A in FIG. 7 is set to lm seconds to 10 milliseconds
- section C in FIG. 7 is set to 10 milliseconds to 1 second.
- the period of B is set as a period corresponding to a low-frequency rectangular wave during normal lighting or a longer period. The setting of these times is controlled by the microcomputer of the control circuit 8 as in the first embodiment.
- a discharge lamp tube voltage detection circuit 9 is provided as a means for determining the cumulative lighting time of the high-intensity discharge lamp 7, and it can be determined that the cumulative lighting time becomes longer as the tube voltage increases. it can. This utilizes the property that the discharge lamp has a higher tube voltage as it gets longer.
- the discharge lamp life that is, the cumulative value of section C is accumulated at the next start-up. It can be set longer as the lighting time becomes longer.
- control circuit 8 is simply provided with a non-volatile timer function (a function that maintains the timer power value even when the power is turned off), and this timer counts the discharge lamp lighting time, It may be configured to determine the cumulative lighting time of the discharge lamp by resetting the timer when the discharge lamp is replaced.
- the discharge lamp lighting devices according to the first to fourth embodiments can be used as an external ballast that is built in a lighting fixture equipped with a high-intensity discharge lamp or is provided separately from a lamp. Further, such a lighting apparatus may be combined with a human sensor or a brightness sensor to constitute a lighting system in which the light output is controlled according to the sensor output. Moreover, you may comprise the illumination system in which light output is controlled according to a time slot
- the present invention relates to an initial aging discharge lamp, a life cycle, a period in which a high voltage is applied by resonance operation, a period in which a low-frequency rectangular wave voltage or a DC voltage is applied, and a repetition period in a starting process of a high-intensity discharge lamp.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07744019.6A EP2023694A4 (en) | 2006-05-26 | 2007-05-24 | DEVICE FOR OPERATING A DISCHARGE LAMP AND LIGHTING INSTRUMENT |
CN2007800191844A CN101455126B (zh) | 2006-05-26 | 2007-05-24 | 放电灯点亮装置及照明设备 |
CA2652927A CA2652927C (en) | 2006-05-26 | 2007-05-24 | Discharge-lamp lighting device and luminaire |
US12/301,540 US8040074B2 (en) | 2006-05-26 | 2007-05-24 | Discharge-lamp lighting device and luminaire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006146102A JP4697050B2 (ja) | 2006-05-26 | 2006-05-26 | 放電灯点灯装置及び照明器具 |
JP2006-146102 | 2006-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007138969A1 true WO2007138969A1 (ja) | 2007-12-06 |
Family
ID=38778489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/060585 WO2007138969A1 (ja) | 2006-05-26 | 2007-05-24 | 放電灯点灯装置及び照明器具 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8040074B2 (ja) |
EP (1) | EP2023694A4 (ja) |
JP (1) | JP4697050B2 (ja) |
CN (1) | CN101455126B (ja) |
CA (1) | CA2652927C (ja) |
WO (1) | WO2007138969A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008102703A1 (ja) * | 2007-02-19 | 2008-08-28 | Panasonic Electric Works Co., Ltd. | 放電灯点灯装置、照明装置、及び液晶表示装置 |
JP2008243629A (ja) * | 2007-03-27 | 2008-10-09 | Matsushita Electric Works Ltd | 放電灯点灯装置及び照明器具及び照明システム |
EP2260682B1 (de) * | 2008-03-19 | 2013-05-08 | OSRAM GmbH | Verfahren und betriebsgerät zur minimierung der isolationsbeanspruchung eines hochdruckentladungslampensystems |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461792A (ja) * | 1990-06-26 | 1992-02-27 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JPH05266984A (ja) * | 1992-03-17 | 1993-10-15 | Matsushita Electric Ind Co Ltd | 放電ランプ点灯装置 |
JPH07240293A (ja) * | 1994-02-28 | 1995-09-12 | Toshiba Lighting & Technol Corp | 電源装置及び放電灯点灯装置並びに照明装置 |
JPH0997690A (ja) * | 1995-09-29 | 1997-04-08 | Toshiba Lighting & Technol Corp | 放電灯点灯装置及び照明装置 |
JP2002075677A (ja) * | 2000-08-31 | 2002-03-15 | Matsushita Electric Works Ltd | 高圧放電灯点灯装置 |
JP2004265707A (ja) | 2003-02-28 | 2004-09-24 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JP2005038814A (ja) * | 2003-06-24 | 2005-02-10 | Matsushita Electric Works Ltd | 放電灯点灯装置、照明装置、プロジェクタ |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5932976A (en) * | 1997-01-14 | 1999-08-03 | Matsushita Electric Works R&D Laboratory, Inc. | Discharge lamp driving |
US6437515B1 (en) * | 2000-01-18 | 2002-08-20 | Matsushita Electric Works, Ltd. | Discharge lamp lighting device of high startability with high pulse voltage |
US6963176B2 (en) * | 2001-12-25 | 2005-11-08 | Matsushita Electric Works, Ltd. | Discharge lamp operation apparatus |
US7141937B2 (en) * | 2002-10-28 | 2006-11-28 | Matsushita Electric Works, Ltd. | High-pressure discharge lamp operation device and illumination appliance having the same |
JP2005050661A (ja) * | 2003-07-28 | 2005-02-24 | Matsushita Electric Works Ltd | 高圧放電灯点灯装置 |
US7432670B2 (en) * | 2003-12-12 | 2008-10-07 | Matsushita Electric Works, Ltd. | Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device |
WO2005072020A1 (ja) * | 2004-01-22 | 2005-08-04 | Matsushita Electric Works, Ltd. | 放電ランプ点灯装置、照明装置、プロジェクタ |
DE102005023171A1 (de) * | 2004-05-28 | 2005-12-22 | Harison Toshiba Lighting Corp. | Lichtvorrichtung für Entladungslampen |
JP4578861B2 (ja) * | 2004-05-28 | 2010-11-10 | ハリソン東芝ライティング株式会社 | 高圧放電灯の点灯装置 |
JP4241515B2 (ja) | 2004-06-10 | 2009-03-18 | パナソニック電工株式会社 | 放電灯点灯装置及びプロジェクタ |
JP4665480B2 (ja) | 2004-10-26 | 2011-04-06 | パナソニック電工株式会社 | 放電灯点灯装置、照明器具、および照明システム |
JP4501748B2 (ja) | 2005-03-28 | 2010-07-14 | パナソニック電工株式会社 | 無電極放電灯点灯装置、および照明器具 |
US7365951B2 (en) | 2006-03-07 | 2008-04-29 | Matsushita Electric Works, Ltd. | Discharge lamp lighting device, lighting system and method |
JP4631817B2 (ja) * | 2006-06-27 | 2011-02-16 | パナソニック電工株式会社 | 放電灯点灯装置及び照明器具 |
-
2006
- 2006-05-26 JP JP2006146102A patent/JP4697050B2/ja not_active Expired - Fee Related
-
2007
- 2007-05-24 US US12/301,540 patent/US8040074B2/en not_active Expired - Fee Related
- 2007-05-24 EP EP07744019.6A patent/EP2023694A4/en not_active Withdrawn
- 2007-05-24 WO PCT/JP2007/060585 patent/WO2007138969A1/ja active Application Filing
- 2007-05-24 CN CN2007800191844A patent/CN101455126B/zh not_active Expired - Fee Related
- 2007-05-24 CA CA2652927A patent/CA2652927C/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461792A (ja) * | 1990-06-26 | 1992-02-27 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JPH05266984A (ja) * | 1992-03-17 | 1993-10-15 | Matsushita Electric Ind Co Ltd | 放電ランプ点灯装置 |
JPH07240293A (ja) * | 1994-02-28 | 1995-09-12 | Toshiba Lighting & Technol Corp | 電源装置及び放電灯点灯装置並びに照明装置 |
JPH0997690A (ja) * | 1995-09-29 | 1997-04-08 | Toshiba Lighting & Technol Corp | 放電灯点灯装置及び照明装置 |
JP2002075677A (ja) * | 2000-08-31 | 2002-03-15 | Matsushita Electric Works Ltd | 高圧放電灯点灯装置 |
JP2004265707A (ja) | 2003-02-28 | 2004-09-24 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JP2005038814A (ja) * | 2003-06-24 | 2005-02-10 | Matsushita Electric Works Ltd | 放電灯点灯装置、照明装置、プロジェクタ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2023694A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2023694A4 (en) | 2014-05-14 |
JP2007317511A (ja) | 2007-12-06 |
CN101455126B (zh) | 2012-06-20 |
CN101455126A (zh) | 2009-06-10 |
US20090146579A1 (en) | 2009-06-11 |
EP2023694A1 (en) | 2009-02-11 |
CA2652927C (en) | 2013-04-23 |
CA2652927A1 (en) | 2007-12-06 |
US8040074B2 (en) | 2011-10-18 |
JP4697050B2 (ja) | 2011-06-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8348437B2 (en) | Discharge lamp lighting device and image display device that controls electric power converter output on a historical basis | |
JP4631817B2 (ja) | 放電灯点灯装置及び照明器具 | |
WO2008023476A1 (fr) | Lampe à décharge à haute tension, appareil d'éclairage et équipement d'illumination | |
US8324829B2 (en) | Startup control for a high pressure discharge lamp ballast | |
JP2007115660A (ja) | 高圧放電ランプ点灯装置及び照明装置 | |
CA2679816C (en) | High pressure discharge lamp lighting device and luminaire using same | |
US20100244716A1 (en) | High pressure discharge lamp ballast with adaptive filament heating control based on lamp age | |
JP2011029002A (ja) | 高圧放電灯点灯装置及びこれを用いた照明器具、照明システム | |
EP2244534B1 (en) | High pressure discharge lamp lighting device, illumination fixture and illumination system | |
JP2004146300A (ja) | 高圧放電灯点灯装置 | |
JP4697050B2 (ja) | 放電灯点灯装置及び照明器具 | |
US7692391B2 (en) | Discharge lamp ballast, lighting system and projector | |
JP2001338789A (ja) | 放電灯点灯装置 | |
CN1937876A (zh) | 高压放电灯点亮装置以及照明装置 | |
JP2010080137A (ja) | 高圧放電灯点灯装置、照明器具 | |
JP2010080138A (ja) | 高圧放電灯点灯装置、照明器具 | |
JP2009514158A (ja) | ガス放電灯の点灯モジュール | |
JP4590718B2 (ja) | 高圧放電灯点灯装置 | |
JP2002352990A (ja) | 放電灯点灯装置 | |
JP2010135276A (ja) | 放電灯点灯回路 | |
JPH10289789A (ja) | 放電灯点灯装置 | |
JP2000277277A (ja) | 放電灯点灯装置 | |
JP2011009019A6 (ja) | 高圧放電灯点灯装置及びこれを用いた照明器具、照明システム | |
JP2009176640A (ja) | 高圧放電灯点灯装置、照明器具 | |
EP2273854A2 (en) | High pressure discharge lamp lighting device, illumination fixture and illumination system using thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780019184.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07744019 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12301540 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2652927 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007744019 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |