Lighting device comprising - a base element for electrical contacting and mechanical mounting, - an LED arrangement comprising at least one LED element, said LED arrangement being arranged spaced from said base element along a longitudinal axis, - and a lower heat dissipating structure being arranged between said base element and said LED arrangement, said lower heat dissipating structure comprising a plurality of planar heat dissipation elements made out of a heat conducting material, said planar heat dissipation elements being arranged at least substantially perpendicular to said longitudinal axis, - wherein said lower heat dissipating structure is shaped to have at a first longitudinal position along said longitudinal axis a first extension in cross-section perpendicular to said longitudinal axis, and at a second longitudinal position a second extension in cross-section, - wherein said first longitudinal position is arranged closer to said LED arrangement than said second longitudinal position, and where said first extension is smaller than said second extension, characterized in that - the extension of said planar heat dissipating elements, and their spacing from said LED arrangement is chosen to leave a lighting angle (α), defined between a reference plane, said reference plane passing through said at least one LED element and being perpendicular to said longitudinal axis, and a light emission direction free from obstructions, such that light emitted from said LED arrangement is not obstructed by said lower heat dissipating structure below said reference plane in directions within an interval defined by said lighting angle (α) being in a range of 20-70°, preferably being 60°. - a base element for electrical contacting and mechanical mounting, - an LED arrangement comprising at least one LED element, said LED arrangement being arranged spaced from said base element along a longitudinal axis, - and a lower heat dissipating structure being arranged between said base element and said LED arrangement, said lower heat dissipating structure comprising a plurality of planar heat dissipation elements made out of a heat conducting material, said planar heat dissipation elements being arranged at least substantially perpendicular to said longitudinal axis, - wherein said lower heat dissipating structure is shaped to have at a first longitudinal position along said longitudinal axis a first extension in cross-section perpendicular to said longitudinal axis, and at a second longitudinal position a second extension in cross-section, - wherein said first longitudinal position is arranged closer to said LED arrangement than said second longitudinal position, and where said first extension is smaller than said second extension, - the extension of said planar heat dissipating elements, and their spacing from said LED arrangement is chosen to leave a lighting angle (α), defined between a reference plane, said reference plane passing through said at least one LED element and being perpendicular to said longitudinal axis, and a light emission direction free from obstructions, such that light emitted from said LED arrangement is not obstructed by said lower heat dissipating structure below said reference plane in directions within an interval defined by said lighting angle (α) being in a range of 20-70°, preferably being 60°.