Retrofit lighting device with improved thermal properties

A lighting device comprising:

• a support structure extending in a first direction from a heat sink and comprising a mounting section that has a central mounting face and first and second lateral mounting faces, a first surface portion different from the mounting section, each of the first and second lateral mounting faces being adjacent to the central mounting face and forming an angle with the central mounting face;
• a first arrangement of at least two light emitting elements arranged along the first direction on the central mounting face;
• a second arrangement of at least two light emitting elements arranged along the first direction on the first lateral mounting face;
• a third arrangement of at least two light emitting elements arranged along the first direction on the second lateral mounting face;
• and
• at least one first heat dissipation member in direct contact with and extending from the first surface portion of the support structure, the at least one first heat dissipation member comprising an inclined surface inclined at a non-perpendicular angle with respect to the first surface portion and a respective one of the first and the second lateral mounting faces of the support structure such that a respective thickness of the at least one first heat dissipation member increases away from the first surface portion along a second direction perpendicular to the first direction.