JPH0337798U - - Google Patents
Info
- Publication number
- JPH0337798U JPH0337798U JP9847689U JP9847689U JPH0337798U JP H0337798 U JPH0337798 U JP H0337798U JP 9847689 U JP9847689 U JP 9847689U JP 9847689 U JP9847689 U JP 9847689U JP H0337798 U JPH0337798 U JP H0337798U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- lighting
- discharge lamp
- starting auxiliary
- output
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000007858 starting material Substances 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図はこの考案の一実施例の主要部の概略構
成を示す回路ブロツク図、第２図は従来の放電ラ
ンプ点灯装置の概略を示す回路図、第３図はラン
プ電流の時間的変化を示した図で、同図ａは従来
の回路のランプ電流の時間的変化を示す図、同図
ｂは本考案のランプ電流の時間的変化を示す図で
ある。
図中、１……ランプ、２０……電源回路、２１
，２２……半導体スイツチング素子、２３……ド
ライブ回路、２４……制御回路、２５……トラン
ス、２６……起動器、３０……インバータ回路、
３１……点灯始動補助回路、Ｃ１，Ｃ２，Ｃ′１
，Ｃ′２，Ｃ３……コンデンサ、Ｃ５……電解コ
ンデンサ、Ｒ１，Ｒ２，Ｒ′１，Ｒ′２，Ｒ５，
Ｒ６……抵抗、Ｄ１，Ｄ２，Ｄ′１，Ｄ′２……
ダイオード。
Fig. 1 is a circuit block diagram showing a schematic configuration of the main parts of an embodiment of this invention, Fig. 2 is a circuit diagram showing an outline of a conventional discharge lamp lighting device, and Fig. 3 shows temporal changes in lamp current. In the diagrams shown, Figure a shows the temporal change in the lamp current of the conventional circuit, and Figure b shows the temporal change in the lamp current of the present invention. In the figure, 1... lamp, 20... power supply circuit, 21
, 22... Semiconductor switching element, 23... Drive circuit, 24... Control circuit, 25... Transformer, 26... Starter, 30... Inverter circuit,
31...Lighting starting auxiliary circuit, C 1 , C 2 , C' 1
, C' 2 , C 3 ... Capacitor, C 5 ... Electrolytic capacitor, R 1 , R 2 , R' 1 , R' 2 , R 5 ,
R 6 ...Resistance, D 1 , D 2 , D' 1 , D' 2 ...
diode.
Claims (1)
電源回路の出力を高周波矩形波に変換するインバ
ータ回路と、このインバータ回路の出力により点
灯する放電ランプと、点灯始動時に高圧を供給す
る起動器と、この高圧の供給と共に点灯始動補助
電流を該放電ランプに供給する放電ランプと並列
に接続された点灯始動補助回路と、この点灯始動
補助回路と該放電ランプの間に接続された該イン
バータ回路の出力を平滑する平滑用コンデンサと
、該放電ランプの点灯電流を検出する制御信号検
出回路と、この制御信号より該インバータ回路に
フイードバツクする制御回路とよりなる放電ラン
プ点灯装置において、前記制御信号検出回路は、
前記点灯始動補助回路と前記平滑用コンデンサの
間に接続されて、前記点灯始動補助回路より放電
される点灯始動補助電流も検出する手段を具備し
たことを特徴とする放電ランプ点灯装置。 A power supply circuit whose output voltage has a constant polarity, an inverter circuit that converts the output of this power supply circuit into a high-frequency rectangular wave, a discharge lamp that is lit by the output of this inverter circuit, and a starter that supplies high voltage when starting the lighting. , a lighting starting auxiliary circuit connected in parallel with the discharge lamp that supplies a lighting starting auxiliary current to the discharge lamp together with the supply of this high voltage, and an inverter circuit connected between the lighting starting auxiliary circuit and the discharge lamp. In a discharge lamp lighting device comprising a smoothing capacitor for smoothing an output, a control signal detection circuit for detecting a lighting current of the discharge lamp, and a control circuit for feeding back the control signal to the inverter circuit, the control signal detection circuit teeth,
A discharge lamp lighting device characterized by comprising means connected between the lighting starting auxiliary circuit and the smoothing capacitor to also detect a lighting starting auxiliary current discharged from the lighting starting auxiliary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9847689U JPH0631680Y2 (en) | 1989-08-25 | 1989-08-25 | Discharge lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9847689U JPH0631680Y2 (en) | 1989-08-25 | 1989-08-25 | Discharge lamp lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337798U true JPH0337798U (en) | 1991-04-11 |
| JPH0631680Y2 JPH0631680Y2 (en) | 1994-08-22 |
Family
ID=31647574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9847689U Expired - Lifetime JPH0631680Y2 (en) | 1989-08-25 | 1989-08-25 | Discharge lamp lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631680Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002102120A1 (en) * | 2001-06-08 | 2002-12-19 | Sony Corporation | Discharge lamp igniter device and projector device |
| KR100959787B1 (en) * | 2008-06-26 | 2010-06-21 | 김서연 | The support for using picture frame |
| JP2011154856A (en) * | 2010-01-27 | 2011-08-11 | Ushio Inc | Discharge-lamp power feed device |
| JP2011154857A (en) * | 2010-01-27 | 2011-08-11 | Ushio Inc | Discharge lamp power feed device and discharge lamp lighting device |
-
1989
- 1989-08-25 JP JP9847689U patent/JPH0631680Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002102120A1 (en) * | 2001-06-08 | 2002-12-19 | Sony Corporation | Discharge lamp igniter device and projector device |
| KR100959787B1 (en) * | 2008-06-26 | 2010-06-21 | 김서연 | The support for using picture frame |
| JP2011154856A (en) * | 2010-01-27 | 2011-08-11 | Ushio Inc | Discharge-lamp power feed device |
| JP2011154857A (en) * | 2010-01-27 | 2011-08-11 | Ushio Inc | Discharge lamp power feed device and discharge lamp lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631680Y2 (en) | 1994-08-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |