Upper-layer air disinfection system

Abstract

A lighting system (1) configured to sterilize air in an upper portion of a space or room, such as in a portion of the space or room near a ceiling (17) of the space or room, the lighting system (1) comprising a housing (2), the housing comprises a rear wall (21) configured for abutting a mounting surface and a peripheral wall (22) extending from the rear wall (21); at least one LED light source (3) configured to emit, in operation, UV light; a reflector (5) configured to be arranged between the rear wall (21) and the at least one LED light source (3) so as to reflect the light source light as collimated light in a main emission direction (ID) substantially away from the rear wall (21), the reflector (5) being an elastically deformable reflective sheet, and the lighting system further comprising a bridging member (6) configured to bridge the light source light in the main emission direction (ID) substantially away from the rear wall (21), and a bridge member (6) elongated in an elongation direction (ED) perpendicular to the main emission direction (ID) and arranged between the reflector (5) and the at least one LED light source (3) such that the reflector (5) is forced to assume a curved shape around the bridge member (6) comprising a parabolic cross-section in a plane perpendicular to the elongation direction (ED), wherein the maximum stress level applied on the elastically deformable reflective sheet falls within the elastic state of the material of the elastically deformable reflective sheet.

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