Patent ID: 11920773
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An emergency lighting luminaire for mounting in a recess in a wall or ceiling of a building, wherein this recess is configured to be covered with a covering plate, the luminaire comprising:
a power supply unit that is configured to be mounted in the recess, the power supply unit comprising at least one power source and driver electronics for a plurality of illuminants;
an illuminant unit that is configured to be held outside the recess, the illuminant unit comprising a substrate on which a plurality of illuminants is mounted;
a connector that attaches the illuminant unit to the power supply unit, contains electrical connections between the illuminants and the power supply unit, and is configured to traverse the covering plate; and
a transparent cover that attaches to the substrate, accepts light emitted from the illuminants on an inner surface, alters a propagation path of the light in a refractive material, and emits the light towards an area of interest from an outer surface, wherein the inner surface of the transparent cover comprises one single shape that is concave towards the illuminants, and the outer surface of the transparent cover comprises at least two shapes that are convex towards the area of interest.