A lighting arrangement, comprising: at least one light emitting diode, LED, arranged to emit light, a printed circuit board, PCB, arranged to support the at least one LED, a light guide element configured to guide light emitted from the at least one LED, wherein the light guide element is plate-shaped and arranged in a plane, P, and wherein the at least one LED is arranged at an edge of the light guide element, a support structure fastened to the PCB and arranged at at least a first edge portion of the light guide element, wherein the support structure comprises: - a first portion and a second portion arranged to extend along a first side and a second side of the light guide element, respectively, and along a portion of the light guide element in the plane, P, wherein the first portion and the second portion abut the first side and the second side of the light guide element, respectively, and - a groove having opening and an inner wall, and a cover plate arranged in parallel to the plane, P, and arranged to cover the first side of the light guide element, wherein the cover plate comprises at least one flange connected to the cover plate by a first end, wherein the at least one flange is matingly arranged in the groove of the support structure in that the flange contacts the inner wall of the groove at a contact location C, wherein the inner wall of the groove extends at a groove angle π from the opening to the contact location C, and the flange extends at a flange angle σ from its first end to the contact location C, whereby the first portion and the second portion clamp the at least a first edge portion of the light guide element for positioning of the at least one LED at the edge of the light guide element characterized in that said at least one flange is biasedly arranged in the groove of the support structure, and in that said groove angle π is 1.5° to 20° larger than the flange angle σ for biasing the first portion of the support structure towards the light guide element. at least one light emitting diode, LED, arranged to emit light, a printed circuit board, PCB, arranged to support the at least one LED, a light guide element configured to guide light emitted from the at least one LED, wherein the light guide element is plate-shaped and arranged in a plane, P, and wherein the at least one LED is arranged at an edge of the light guide element, a support structure fastened to the PCB and arranged at at least a first edge portion of the light guide element, wherein the support structure comprises: - a first portion and a second portion arranged to extend along a first side and a second side of the light guide element, respectively, and along a portion of the light guide element in the plane, P, wherein the first portion and the second portion abut the first side and the second side of the light guide element, respectively, and - a groove having opening and an inner wall, and - a first portion and a second portion arranged to extend along a first side and a second side of the light guide element, respectively, and along a portion of the light guide element in the plane, P, wherein the first portion and the second portion abut the first side and the second side of the light guide element, respectively, and - a groove having opening and an inner wall, a cover plate arranged in parallel to the plane, P, and arranged to cover the first side of the light guide element, wherein the cover plate comprises at least one flange connected to the cover plate by a first end, wherein the at least one flange is matingly arranged in the groove of the support structure in that the flange contacts the inner wall of the groove at a contact location C, wherein the inner wall of the groove extends at a groove angle π from the opening to the contact location C, and the flange extends at a flange angle σ from its first end to the contact location C, whereby the first portion and the second portion clamp the at least a first edge portion of the light guide element for positioning of the at least one LED at the edge of the light guide element