TW200420195A - Discharge lamp lighting device (1) - Google Patents
Discharge lamp lighting device (1)Info
- Publication number
- TW200420195A TW200420195A TW92112892A TW92112892A TW200420195A TW 200420195 A TW200420195 A TW 200420195A TW 92112892 A TW92112892 A TW 92112892A TW 92112892 A TW92112892 A TW 92112892A TW 200420195 A TW200420195 A TW 200420195A
- Authority
- TW
- Taiwan
- Prior art keywords
- discharge lamp
- voltage
- lighting device
- section
- circuit
- Prior art date
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Inverter Devices (AREA)
Abstract
The object of the present invention is to provide a discharge lamp lighting device to stop the oscillation when the filament is broken, which can prevent the inverter circuit from heating and the circuit from malfunction. The discharge lamp lighting device comprises: an inverter circuit IV; a driving circuit I to drive the inverter circuit IV; a load circuit LAC of discharge lamp having a stabilizing choke T1; a secondary winding T1a installed on the stabilizing choke T1; a secondary voltage detection section 2 to detect the voltage generated by the secondary winding T1a; a high-frequency filter section 3 to filter out the high-frequency component of the voltage detected by the secondary voltage detection section 2; a detection section 4 to detect the peak value of the outputted voltage from the high-frequency filter section 3; and a determination section 5 to determine whether the lamp bulb LA is broken or open-circuited when the output voltage from the detection section 4 is below the detection reference value for the broken filament, so as to output the stop signal to the driving circuit 1.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003090501A JP4314046B2 (en) | 2003-03-28 | 2003-03-28 | Discharge lamp lighting device |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200420195A true TW200420195A (en) | 2004-10-01 |
TWI290807B TWI290807B (en) | 2007-12-01 |
Family
ID=33404114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92112892A TWI290807B (en) | 2003-03-28 | 2003-05-13 | Discharge lamp lighting device |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4314046B2 (en) |
TW (1) | TWI290807B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9549449B2 (en) | 2015-01-30 | 2017-01-17 | Advanced Optoelectronic Technology, Inc. | Fault detection apparatus and fault detection method thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008010153A (en) * | 2006-06-27 | 2008-01-17 | Matsushita Electric Works Ltd | Discharge lamp lighting device and luminaire |
US7327101B1 (en) * | 2006-12-27 | 2008-02-05 | General Electric Company | Single point sensing for end of lamp life, anti-arcing, and no-load protection for electronic ballast |
JP5285302B2 (en) * | 2008-02-26 | 2013-09-11 | パナソニック株式会社 | Discharge lamp lighting device |
-
2003
- 2003-03-28 JP JP2003090501A patent/JP4314046B2/en not_active Expired - Fee Related
- 2003-05-13 TW TW92112892A patent/TWI290807B/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9549449B2 (en) | 2015-01-30 | 2017-01-17 | Advanced Optoelectronic Technology, Inc. | Fault detection apparatus and fault detection method thereof |
TWI583258B (en) * | 2015-01-30 | 2017-05-11 | 榮創能源科技股份有限公司 | Fault detection apparatus and fault detection method |
Also Published As
Publication number | Publication date |
---|---|
JP2004296385A (en) | 2004-10-21 |
JP4314046B2 (en) | 2009-08-12 |
TWI290807B (en) | 2007-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |