Illuminating device, has closed air passage provided with essentially horizontal extension, and conveying unit actively conveying air through air passage, and heat sink partially arranged in air stream that flows through air passage

摘要

The device (1) has a semiconductor light source (7) e.g. LED, for providing connection with a heat sink (6) for heat dissipation. A closed air passage (8) is provided with an essentially horizontal extension. A conveying unit (9) actively conveys air through the air passage. The heat sink is partially arranged in an air stream (11a) that flows through the air passage. The heat sink includes a retainer for mounting the light source, a reflector, a lens and/or an aperture arrangement of the device.