Patent ID: 6717367
Filing Date: 2004-04-06
Classification: H02J,H05B,Y10S

Abstract:
An emergency lighting arrangement configured to be connected to a supply network and utilized in connection with a fluorescent lamp, the emergency lighting comprisingan electronic ballast for igniting and burning the fluorescent lamp, the electronic ballast being a controllably dimmable ballast, and an emergency lighting apparatus including a battery, a recharging device adapted to recharge the battery from the supply network, a supply device adapted to supply a battery voltage, a control unit configured to control the emergency lighting apparatus, and means for controllably dimming the electronic ballast, which means comprise a battery current determining member adapted to determine a magnitude of a current, such that the means for controllably dimming the electronic ballast is configured to controllably dim the electronic ballast in response to the magnitude of the determined current.