Abstract: A lighting apparatus includes a first light source, a light housing with an opening for light from the first light source and configured to convert external power to a driving current for the first light source, an emergency light module configured to provide emergency light, and a function interface disposed on the housing for selectively activating the emergency module under an emergency condition.

Abstract: A lighting apparatus includes a first light source, a light housing, a driver, and a function interface. The light housing is used for disposing the first light source. The light housing has a light opening for a light of the first light source to pass through. The driver has a driver box and a driver circuit. The driver box is attached to the light housing. The driver circuit is connected to an external power and converts the external power to a driving current supplied to the first light source. The function interface is disposed on the light housing for detachably connecting to an emergency light module for providing an emergency light under an emergency condition.