JP2016035864A5 - - Google Patents
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- JP2016035864A5 JP2016035864A5 JP2014158769A JP2014158769A JP2016035864A5 JP 2016035864 A5 JP2016035864 A5 JP 2016035864A5 JP 2014158769 A JP2014158769 A JP 2014158769A JP 2014158769 A JP2014158769 A JP 2014158769A JP 2016035864 A5 JP2016035864 A5 JP 2016035864A5
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- JP
- Japan
- Prior art keywords
- main discharge
- voltage
- duty ratio
- switching element
- trigger
- 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.)
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- 239000003990 capacitor Substances 0.000 claims 9
- 238000007599 discharging Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 claims 1
Claims (2)
該発光管内の内部に０．５〜１２．５ｍｍの距離で離間して対向配置された一対の主放電電極と、を備えたショートアーク型フラッシュランプを点灯させる放電ランプ点灯装置であって、
前記主放電電極間のフラッシュ放電のための電荷を蓄積する主放電用コンデンサと、スイッチング素子を有し、該スイッチング素子のオン／オフにより、ＤＣ電源の電圧を昇圧して前記主放電用コンデンサに電荷を蓄積する昇圧回路と、
制御回路と、を備え、
該制御回路は、前記主放電用コンデンサの充電時には、前記スイッチング素子のオン／オフを規定するスイッチゲートアクティブ信号を前記昇圧回路へ送信し、
前記スイッチゲートアクティブ信号は、前記スイッチング素子のオン期間中に該スイッチング素子に流れる電流が、予め設定された基準過電流値を超えないように、デューティ比を予め設定された初期デューティ比に設定したものであり、
該初期デューティ比は０．１〜２．０％であり、
前記制御回路は、前記主放電用コンデンサの充電電圧が目標電圧値よりも低い所定の基準電圧値に達するまでの抑制期間中は、
前記デューティ比を、前記スイッチング素子に流れる電流が前記基準電流値を超えない範囲となるよう増加させるものであり、
前記発光管の内部又は外部にはトリガー電極が設けられ、
前記点灯装置はトリガーパルス信号に応じて前記トリガー電極にトリガー高電圧を供給するためのトリガー電圧生成回路と、前記主放電用コンデンサに並列接続された放電抵抗を備え、
前記制御回路は、前記トリガーパルス信号を前記トリガー電圧生成回路に送信し、
前記主放電用コンデンサの放電時には、
前記トリガーパルス信号がオンとなる前に前記制御回路が前記スイッチゲートアクティブ信号を送信することを停止し、若しくは該スイッチゲートアクティブ信号のデューティ比を前記初期デューティ比より小さい値に設定し、
前記主放電電極間での電流が停止した後に、前記初期デューティ比により前記主放電用コンデンサへの電荷の供給を再開することを特徴とする放電ランプ点灯装置。 Arc tube,
A discharge lamp lighting device for lighting a short arc type flash lamp comprising a pair of main discharge electrodes disposed opposite to each other at a distance of 0.5 to 12.5 mm inside the arc tube,
A main discharge capacitor for accumulating electric charge for flash discharge between the main discharge electrodes; and a switching element. The on / off of the switching element boosts the voltage of a DC power supply to the main discharge capacitor. A booster circuit for accumulating charge;
A control circuit,
The control circuit, when charging the main discharge capacitor, transmits a switch gate active signal that specifies on / off of the switching element to the booster circuit,
The switch gate active signal has a duty ratio set to a preset initial duty ratio so that a current flowing through the switching element during an ON period of the switching element does not exceed a preset reference overcurrent value. Is,
The initial duty ratio is 0.1 to 2.0%,
The control circuit, during the suppression period until the charging voltage of the main discharge capacitor reaches a predetermined reference voltage value lower than the target voltage value,
The duty ratio state, and are not current flowing through the switching element increases to a range not exceeding the reference current value,
A trigger electrode is provided inside or outside the arc tube,
The lighting device includes a trigger voltage generation circuit for supplying a trigger high voltage to the trigger electrode according to a trigger pulse signal, and a discharge resistor connected in parallel to the main discharge capacitor,
The control circuit transmits the trigger pulse signal to the trigger voltage generation circuit,
When discharging the main discharge capacitor,
Before the trigger pulse signal is turned on, the control circuit stops transmitting the switch gate active signal, or sets the duty ratio of the switch gate active signal to a value smaller than the initial duty ratio,
The discharge lamp lighting device, wherein after the current between the main discharge electrodes is stopped, the supply of charge to the main discharge capacitor is resumed with the initial duty ratio.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014158769A JP5915946B2 (en) | 2014-08-04 | 2014-08-04 | Discharge lamp lighting device |
| PCT/JP2015/070683 WO2016021400A1 (en) | 2014-08-04 | 2015-07-21 | Discharge lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014158769A JP5915946B2 (en) | 2014-08-04 | 2014-08-04 | Discharge lamp lighting device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016035864A JP2016035864A (en) | 2016-03-17 |
| JP2016035864A5 true JP2016035864A5 (en) | 2016-04-28 |
| JP5915946B2 JP5915946B2 (en) | 2016-05-11 |
Family
ID=55263672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014158769A Active JP5915946B2 (en) | 2014-08-04 | 2014-08-04 | Discharge lamp lighting device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5915946B2 (en) |
| WO (1) | WO2016021400A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7215707B2 (en) * | 2018-06-21 | 2023-01-31 | 株式会社ユメックス | short arc flash lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005339987A (en) * | 2004-05-27 | 2005-12-08 | Pentax Corp | Light emitting device for photography and camera having the same |
| JP4744198B2 (en) * | 2005-06-06 | 2011-08-10 | パナソニック フォト・ライティング 株式会社 | Strobe device |
| JP2006025597A (en) * | 2005-07-25 | 2006-01-26 | Konica Minolta Holdings Inc | Stroboscope apparatus |
| JP2008152972A (en) * | 2006-12-14 | 2008-07-03 | Sony Corp | Light-emitting device and light-emitting method |
-
2014
- 2014-08-04 JP JP2014158769A patent/JP5915946B2/en active Active
-
2015
- 2015-07-21 WO PCT/JP2015/070683 patent/WO2016021400A1/en active Application Filing
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