(19)
(11) EP 2 023 463 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.11.2010 Bulletin 2010/46

(43) Date of publication A2:
11.02.2009 Bulletin 2009/07

(21) Application number: 07118935.1

(22) Date of filing: 19.10.2007
(51) International Patent Classification (IPC): 
H02J 9/00(2006.01)
H02J 9/06(2006.01)
 H02J 9/02(2006.01)
F21S 9/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 06.08.2007 CN 200720126689 U

(71) Applicant: Bast Lighting Co., Ltd.
Hong Kong (CN)

(72) Inventor:
  • Li, Po
    Hong Kong (CN)

(74) Representative: Beck & Rössig European Patent Attorneys 
Cuvilliésstrasse 14
81679 München
81679 München (DE)

   


(54) An emergency luminaire


(57) An emergency luminairc, including a case made of a front cover, a back cover and an electronic circuit fixed on the back cover, the electronic circuit comprising an AC-DC converter, a charging circuit, a control circuit, a DC-DC converter, a DC-AC converter, an output AC-DC converter and a conversion circuit, wherein: the AC-DC converter converts an input AC into two groups of output DC, the first group being connected with the charging circuit and the second being connected with the control circuit; the charging circuit is adapted to conduct current-limited charge to the battery by the first group of DC; the control circuit is adapted to control conversion between normal lighting and emergency lighting, the voltage test of battery discharge, and conversion status test by the second group of DC; the DC-AC converter includes an oscillating circuit and a boost circuit to produce an output high-frequency and a high-voltage AC with a transformer; the output AC-DC converter further comprises a rectification circuit, a filtering and a current-limited circuit; the DC-DC converter is adapted to convert the battery voltage to high voltage DC suitable for an electronic ballast to work through DC-AC converter and output AC-DC converter, and functions when the AC is turned off, being under-voltage or in test condition; the conversion circuit is adapted to control the conversion between normal lighting and emergency lighting.







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