An emergency lighting unit, a device comprising said unit, and a control method for these

A description is given of an emergency lighting unit comprising: a connection for a battery (5), an inverter (9) for supplying from said battery (5), in emergency conditions, a lamp (L) connectable to said unit; a control circuit (11) for the current supplied by the battery to the inverter (9), which maintains said current at a predetermined value (Imax) independently of the characteristics of the lamp (L) connected to said inverter.