Light emitting device with heat spacer

A light emitting device comprising a light source, a housing, a casing and a heat sink element, the casing comprising a connection surface, the heat sink element comprising a first part configured to be connected to the light source, and a second part configured to be connected to the first part,

• wherein the first part comprises a first connection structure and the second part comprises a second connection structure, and
• wherein the first connection structure comprises a first outer surface and the second connection structure comprises a second outer surface which first and second outer surface are configured to, in a mounted condition, be in mutual contact with one another for transferring heat from the first part to the second part,
• wherein the first part and the second part are mutually connected and fastened through a spring screw mechanism having a spring screw and extending in a fixed orientation parallel to the first and second outer surface,
• wherein the first part comprises a first external surface adapted for connection to the housing adjacent to the light source and the first outer surface of the first connection structure extends perpendicular to first external surface, and
• the second part comprises a second external surface adapted for connection to the connection surface and the second outer surface of the second connection structure extends perpendicular to the second external surface, and
• wherein the spring screw is configured to tune the mutual connection between the first part and the second part to increase or decrease a surface area connection of the first external surface and second external surface and thereby adjust a thermal property of the heat sink.