Patent ID: 11175018

Abstract:
A lighting unit (10) is disclosed comprising a torsion box (50) having a plurality of sidewalls (60) and a grid of internal walls (70), each of said internal walls extending between a pair of said sidewalls, said internal walls defining a plurality of compartments (80) within the lighting unit. At least one solid state lighting element (30) is located within at least some of said compartments, and a back panel (20) is arranged at a first opening (51) of the torsion box delimited by the sidewalls such that the back panel covers said compartments, wherein a second opening (53) of the torsion box delimited by said sidewalls opposing the first major opening defines a light exit window of the lighting unit. Also disclosed is a lighting kit comprising such lighting units, and wherein at least some internal walls (70) have a recessed central portion (72) having a height (H′) of at most half the height (H) of said side walls (70).