JP6509922B2 - 放電ランプ点灯装置 - Google Patents
放電ランプ点灯装置 Download PDFInfo
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- JP6509922B2 JP6509922B2 JP2017015239A JP2017015239A JP6509922B2 JP 6509922 B2 JP6509922 B2 JP 6509922B2 JP 2017015239 A JP2017015239 A JP 2017015239A JP 2017015239 A JP2017015239 A JP 2017015239A JP 6509922 B2 JP6509922 B2 JP 6509922B2
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- 238000001514 detection method Methods 0.000 claims description 107
- 230000005856 abnormality Effects 0.000 claims description 71
- 230000004044 response Effects 0.000 claims description 10
- 230000008034 disappearance Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000004804 winding Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Description
36 制御装置
50 誤検出待ち時間タイマ(無効化手段)
Claims (2)
- 起動信号に応動して放電ランプに動作電圧を供給する電源手段であって、開閉手段を有し、前記動作電圧の供給状態における前記開閉手段が閉じられている期間中高電圧を一時的に前記動作電圧に重畳し、前記開閉手段が開かれているとき、前記高電圧の重畳を中止する前記電源手段と、
前記起動信号の供給開始時には動作しており、前記放電ランプへ前記電源手段から供給される出力電流が所定値より小さいとき、異常検出信号を出力する異常検出手段と、
前記起動信号の供給開始時から予め定めた時間に亘って無効化信号を発生する無効化手段と、
前記無効化信号の発生終了後の前記異常検出信号の発生に応じて前記動作電圧を供給停止しかつ前記開閉手段を閉じ、前記無効化信号の発生中の前記異常検出信号の発生に応じて前記開閉手段を閉じ、前記無効化信号の発生中の前記異常検出信号の消失に応じて前記開閉手段を開く制御手段とを、
具備し、
前記異常検出手段は、前記放電ランプへ前記電源手段から供給される出力電流が所定値より小さいとき、前記異常検出信号を出力する電流検出手段を有し、
前記無効化信号発生中に前記電流検出手段が前記異常検出信号を出力し、その異常検出信号が、前記無効化信号が出力されている期間中に消失し、その消失後の前記無効化信号発生期間中に、再度前記電流検出手段が前記異常検出信号を出力したとき、前記制御手段が前記開閉手段を閉じて前記高電圧を前記動作電圧に再度重畳し、
前記無効化手段は、前記起動信号に応動し、前記予め定めた時間を計時するタイマである放電ランプ点灯装置。 - 請求項1記載の放電ランプ点灯装置において、前記予め定めた時間を変更する変更手段を有する放電ランプ点灯装置。
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JP2017015239A JP6509922B2 (ja) | 2017-01-31 | 2017-01-31 | 放電ランプ点灯装置 |
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JP2017015239A JP6509922B2 (ja) | 2017-01-31 | 2017-01-31 | 放電ランプ点灯装置 |
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JP2013040510A Division JP6110162B2 (ja) | 2013-03-01 | 2013-03-01 | 放電ランプ点灯装置 |
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JP6509922B2 true JP6509922B2 (ja) | 2019-05-08 |
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Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740899A (en) * | 1980-08-26 | 1982-03-06 | Ushio Electric Inc | Device for firing discharge lamp |
JPS5875793A (ja) * | 1981-10-30 | 1983-05-07 | ウシオ電機株式会社 | 放電灯点灯装置 |
JPS63244589A (ja) * | 1987-03-31 | 1988-10-12 | ウシオ電機株式会社 | 放電灯点灯装置 |
JPH0350795U (ja) * | 1989-09-21 | 1991-05-17 | ||
JP2909867B2 (ja) * | 1993-11-22 | 1999-06-23 | 株式会社小糸製作所 | 車輌用放電灯の点灯回路 |
JP3335315B2 (ja) * | 1999-01-22 | 2002-10-15 | フェニックス電機株式会社 | 放電ランプの矩形波点灯装置及び矩形波点灯方法 |
JP3603643B2 (ja) * | 1999-02-15 | 2004-12-22 | 松下電工株式会社 | 放電灯点灯装置 |
JP2009054478A (ja) * | 2007-08-28 | 2009-03-12 | Hakuyou:Kk | 放電灯点灯装置 |
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