JP4927453B2 - 高圧放電灯の点灯回路 - Google Patents
高圧放電灯の点灯回路 Download PDFInfo
- Publication number
- JP4927453B2 JP4927453B2 JP2006168727A JP2006168727A JP4927453B2 JP 4927453 B2 JP4927453 B2 JP 4927453B2 JP 2006168727 A JP2006168727 A JP 2006168727A JP 2006168727 A JP2006168727 A JP 2006168727A JP 4927453 B2 JP4927453 B2 JP 4927453B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge lamp
- voltage
- power
- pressure discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—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
- H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2923—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/05—Starting and operating circuit for fluorescent lamp
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/07—Starting and control circuits for gas discharge lamp using transistors
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Projection Apparatus (AREA)
- Dc-Dc Converters (AREA)
Description
2、28 入力切替回路
3、32 電力切替回路
10、40、50 AC/DCコンバーター
11、34、51 安定点灯回路
12、36、52 電力制御部
13、38、53 点灯始動回路
14、20、54 高圧放電灯
15、55 光学エンジン
S スクリーン
22 駆動回路
24 充電回路
26 点灯回路用電池
Claims (1)
- プロジェクター用の光源として用いられる高圧放電灯を点灯させるための回路であって、
高圧放電灯と、
前記高圧放電灯を始動点灯させる点灯始動回路と、
前記高圧放電灯を安定に点灯させる安定点灯回路と、
前記安定点灯回路から前記高圧放電灯への電力供給を制御する電力制御部と、
前記電力制御部の動作を制御する電力切替回路と、
直流電圧を昇圧して前記安定点灯回路に出力するDC/DCコンバーターと、
前記DC/DCコンバーターに直流電圧を出力する入力切替回路と、
入力された直流電圧を前記電力切替回路および前記入力切替回路に出力する駆動回路と、
前記入力切替回路に直流電圧を出力するバッテリーと、
入力された直流電圧を前記バッテリーに出力する充電回路とを備え、
前記電力切替回路は、前記駆動回路から直流電圧が出力されていないときは前記バッテリーから前記高圧放電灯に第1の電力を供給し、前記駆動回路から直流電圧が出力されているときは前記高圧放電灯に前記第1の電力よりも相対的に高い第2の電力を前記駆動回路から供給するように電力切替えを行うことを特徴とする高圧放電灯の点灯回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006168727A JP4927453B2 (ja) | 2005-08-01 | 2006-06-19 | 高圧放電灯の点灯回路 |
US11/457,837 US7348737B2 (en) | 2005-08-01 | 2006-07-17 | Lighting circuit for high-pressure discharge lamp |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005223168 | 2005-08-01 | ||
JP2005223168 | 2005-08-01 | ||
JP2006168727A JP4927453B2 (ja) | 2005-08-01 | 2006-06-19 | 高圧放電灯の点灯回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007066878A JP2007066878A (ja) | 2007-03-15 |
JP4927453B2 true JP4927453B2 (ja) | 2012-05-09 |
Family
ID=37693579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006168727A Expired - Fee Related JP4927453B2 (ja) | 2005-08-01 | 2006-06-19 | 高圧放電灯の点灯回路 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7348737B2 (ja) |
JP (1) | JP4927453B2 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7880396B2 (en) * | 2007-06-14 | 2011-02-01 | Seiko Epson Corporation | Projector device employing ballast with flyback converter |
JP2009031333A (ja) * | 2007-07-24 | 2009-02-12 | Sharp Corp | プロジェクタの駆動方法及びプロジェクタ |
CN101943844A (zh) * | 2009-07-08 | 2011-01-12 | 深圳富泰宏精密工业有限公司 | 多功能投影仪 |
CN102098828A (zh) * | 2009-12-11 | 2011-06-15 | 富准精密工业(深圳)有限公司 | 灯具控制*** |
JP5551545B2 (ja) * | 2010-08-20 | 2014-07-16 | 株式会社小糸製作所 | 放電灯点灯回路 |
US20130069578A1 (en) * | 2011-09-21 | 2013-03-21 | Chao-Chin Yao | Brushless Ceiling Fan Motor Power Control System |
CN102969772B (zh) * | 2012-12-12 | 2015-08-05 | 山东省科学院自动化研究所 | 基于绝对可充放容量的全阶段动力锂电池均衡方法及装置 |
US9898086B2 (en) * | 2013-09-06 | 2018-02-20 | Immersion Corporation | Systems and methods for visual processing of spectrograms to generate haptic effects |
TWI537673B (zh) * | 2014-04-30 | 2016-06-11 | 中強光電股份有限公司 | 投影光學系統及用於投影光學系統的能量控制方法 |
CN105511210B (zh) * | 2014-09-22 | 2017-10-24 | 中强光电股份有限公司 | 投影机 |
JP7459559B2 (ja) | 2020-02-27 | 2024-04-02 | カシオ計算機株式会社 | 投影装置、電源装置、異常検知方法、及び異常検知プログラム |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04136911A (ja) * | 1990-09-28 | 1992-05-11 | Seiko Epson Corp | バックライト装置 |
US5982645A (en) * | 1992-08-25 | 1999-11-09 | Square D Company | Power conversion and distribution system |
JP3404904B2 (ja) | 1994-07-29 | 2003-05-12 | 松下電工株式会社 | 放電灯点灯装置 |
KR0137917B1 (ko) * | 1994-10-28 | 1998-05-15 | 김광호 | 액정표시소자의 후면광원 구동회로 |
JPH08330081A (ja) | 1995-06-02 | 1996-12-13 | Hitachi Ltd | 放電灯点灯装置 |
JPH11339982A (ja) * | 1998-05-26 | 1999-12-10 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JP2001348731A (ja) | 2000-06-06 | 2001-12-21 | Asahi Kasei Corp | 仮撚加工性の良好なポリエステル繊維 |
JP3538149B2 (ja) | 2001-01-30 | 2004-06-14 | Nec液晶テクノロジー株式会社 | 反射型液晶表示装置及びその製造方法 |
JP2002260890A (ja) * | 2001-02-28 | 2002-09-13 | Harison Toshiba Lighting Corp | 放電灯点灯装置及びこの放電灯点灯装置を用いた画像表示装置 |
US6781328B2 (en) * | 2002-01-15 | 2004-08-24 | Matsushita Electric Industrial Co., Ltd. | Image display apparatus and method for operating the same and lamp unit for image display apparatus |
JP4186578B2 (ja) * | 2002-10-09 | 2008-11-26 | ウシオ電機株式会社 | 高圧放電ランプ点灯装置 |
JP2004303573A (ja) * | 2003-03-31 | 2004-10-28 | Matsushita Electric Ind Co Ltd | 高圧水銀ランプ、この高圧水銀ランプを用いたランプユニット、およびこのランプユニットを用いた画像表示装置 |
JP2006216251A (ja) * | 2005-02-01 | 2006-08-17 | Koito Mfg Co Ltd | 車両用前照灯装置 |
-
2006
- 2006-06-19 JP JP2006168727A patent/JP4927453B2/ja not_active Expired - Fee Related
- 2006-07-17 US US11/457,837 patent/US7348737B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2007066878A (ja) | 2007-03-15 |
US20070024204A1 (en) | 2007-02-01 |
US7348737B2 (en) | 2008-03-25 |
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