Global Patent Index - EP 1041862 A1

EP 1041862 A1 2000-10-04 - APPARATUS FOR LIGHTING DISCHARGE LAMP

Title (en)

APPARATUS FOR LIGHTING DISCHARGE LAMP

Title (de)

GERÄT ZUM BETREIBEN EINER ENTLADUNGSLAMPE

Title (fr)

DISPOSITIF D'ALLUMAGE POUR LAMPE A DECHARGE

Publication

EP 1041862 A1 (EN)

Application

EP 99947921 A

Priority

  • JP 9905703 W
  • JP 29642198 A
  • JP 31434998 A
  • JP 32163698 A

Abstract (en)

A discharge lamp lighting device for lighting a discharge lamp (5c) within a discharge lamp load circuit (5) by converting a direct current supplied from a direct current power source (1) into a high frequency current by an inverter circuit (2) and using the high frequency current, comprising a current detecting circuit (6) for detecting a current supplied to the discharge lamp load circuit (5), a reference voltage circuit (14) for outputting a plurality of different reference voltages, an error amplifier (9) for producing a control signal based on an output from the current detecting circuit (6) and an output from the reference voltage circuit (14), an inverter driving circuit (3) for controlling the inverter circuit (2), based on the control signal from the error amplifier (9), to regulate the current to be supplied to the discharge lamp load circuit (5), and reference voltage selecting means (19) for selecting a reference voltage output from the reference voltage circuit (14). The discharge lamp lighting device is applicable to the discharge lamp having a plurality of different rated values. <IMAGE>

IPC 1-7 (main, further and additional classification)

H05B 41/24

IPC 8 full level (invention and additional information)

H05B 41/282 (2006.01); H05B 41/36 (2006.01); H05B 41/392 (2006.01); H05B 41/40 (2006.01)

CPC (invention and additional information)

H05B 41/2828 (2013.01); H05B 41/36 (2013.01); H05B 41/392 (2013.01); H05B 41/3925 (2013.01); H05B 41/40 (2013.01)

Designated contracting state (EPC)

DE NL

EPO simple patent family

EP 1041862 A1 20001004; EP 1041862 A4 20011107; TW 538654 B 20030621; WO 0024230 A1 20000427

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE NL

2002-09-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011206

2001-11-07 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010920

2001-11-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-11-07 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 05B 41/24 A, 7H 05B 41/28 B, 7G 05F 1/00 B, 7H 02H 3/28 B

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000619

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE