A lighting unit for a suspended ceiling comprising: - one or more lighting tiles; - an interface component that forms at least a portion of a grid system for the suspended ceiling and for supporting the one or more lighting tiles; wherein the interface component comprises a central support portion having a first end facing a ceiling, and a second end having a first flange and a second flange that are opposing each other; and wherein at least one of the first flange and the second flange comprises a through-hole that serves as an aperture for at least part of a device that is arranged at one of the peripheries (1002, 1003) of the lighting tile when the first flange is configured to support a first lighting tile when the first lighting tile is installed in the suspended ceiling and/or the second flange is configured to support a second lighting tile when the second lighting tile is installed in the suspended ceiling, characterised in that at least part of the device comprises one of: - an ion generation source configured to, in operation, generate ionized air molecules in a physical area beneath the suspended ceiling, - a sensor configured to, in operation, sense a change in a physical area beneath the suspended ceiling, and - a light source configured to, in operation, emit light in a physical area beneath the suspended ceiling. - one or more lighting tiles; - an interface component that forms at least a portion of a grid system for the suspended ceiling and for supporting the one or more lighting tiles; wherein the interface component comprises a central support portion having a first end facing a ceiling, and a second end having a first flange and a second flange that are opposing each other; and wherein at least one of the first flange and the second flange comprises a through-hole that serves as an aperture for at least part of a device that is arranged at one of the peripheries (1002, 1003) of the lighting tile when the first flange is configured to support a first lighting tile when the first lighting tile is installed in the suspended ceiling and/or the second flange is configured to support a second lighting tile when the second lighting tile is installed in the suspended ceiling, characterised in that at least part of the device comprises one of: - an ion generation source configured to, in operation, generate ionized air molecules in a physical area beneath the suspended ceiling, - a sensor configured to, in operation, sense a change in a physical area beneath the suspended ceiling, and - a light source configured to, in operation, emit light in a physical area beneath the suspended ceiling. wherein the interface component comprises a central support portion having a first end facing a ceiling, and a second end having a first flange and a second flange that are opposing each other; and wherein at least one of the first flange and the second flange comprises a through-hole that serves as an aperture for at least part of a device that is arranged at one of the peripheries (1002, 1003) of the lighting tile when the first flange is configured to support a first lighting tile when the first lighting tile is installed in the suspended ceiling and/or the second flange is configured to support a second lighting tile when the second lighting tile is installed in the suspended ceiling, characterised in that at least part of the device comprises one of: - an ion generation source configured to, in operation, generate ionized air molecules in a physical area beneath the suspended ceiling, - a sensor configured to, in operation, sense a change in a physical area beneath the suspended ceiling, and - a light source configured to, in operation, emit light in a physical area beneath the suspended ceiling. - an ion generation source configured to, in operation, generate ionized air molecules in a physical area beneath the suspended ceiling, - a sensor configured to, in operation, sense a change in a physical area beneath the suspended ceiling, and - a light source configured to, in operation, emit light in a physical area beneath the suspended ceiling.