ILLUMINATION SYSTEM WITH EVAPORATIVE COOLING

摘要

An illumination device (2; 30) comprising at least one light-source (3; 31, 32); and a heat-sink member (4; 35). The heat-sink member is thermally connected to the at least one light-source (3; 31, 32), and the heat-sink member (4; 35) comprises a water retaining surface portion (6; 36, 37) arranged to be in contact with the surrounding atmosphere. By allowing liquid water to efficiently absorb heat generated by the light-source(s), very efficient cooling of the light-source(s) can be achieved.