1. A lamp comprising:at least two solid state light sources;
an envelope comprising a light transmittable surface adapted to transmit light from the solid state light sources;
a heat sink extending from inside the envelope to the light transmittable surface of the envelope such that it divides the envelope into at least two compartments; and
a flexible printed circuit at which the solid state light sources are mounted and which is adapted to be connected to driving electronics of the lamp, wherein the flexible printed circuit comprises a plurality of leg portions and a mid-portion, wherein the plurality of leg portions of the flexible printed circuit are integrally formed with and extend from the mid-portion of the flexible printed circuit, and wherein each leg portion is respectively arranged in one of the compartments and an outer surface of each leg portion is substantially concave,
wherein at least two of the leg portions of the flexible printed circuit are each attached to the heat sink such that the solid state light sources are distributed in the compartments.