Tubular lighting device

A tubular lighting device comprising:

• an elongated heat sink;
• at least one light source mounted on the elongated heat sink, and
• an elongated hollow tubular member with a first and a second end arranged along the elongated heat sink, said tubular member comprising a lens extending between the first and the second end of the tubular member with a light entry surface facing said at least one light source, said lens being adapted to direct light emitted from the at least one light source;
• and
• a light exit surface extending between the first and the second end, the light exit surface being located in front of said lens in a light output direction and the light exit surface having at least one diffusing portion with a transparent portion on each side of each diffusing portion, and
• wherein the at least one diffusing portion covers an area on the light exit surface corresponding to a light distribution of said lens projected on the light exit surface, such that the majority of the light emitted by said at least one light source is directed by said lens onto said at least one diffusing portion.