| 摘要 |
The invention relates to a luminaire for illuminating a target area (34) by means of retroreflection on a reflector (30), comprising a light-emitting diode module (12) having at least one light-emitting diode (14) and a cooling device (10) for the light-emitting diode module (12), wherein the cooling device comprises a transparent liquid (26) as the coolant and a transparent coolant container (20) for receiving the coolant (26), wherein the coolant container (20) comprises a first (22) and a second transparent wall (24), between which the coolant (26) is located and which extend substantially perpendicular to the optical axis (36) of the reflector (30) and have a surface such that in an installed state, in which the light-emitting diode module (12) and the cooling device (10) are connected to the reflector (30), at least 90% of the radiation from the light-emitting diode module (12) which is reflected on the reflector (30) and which reaches the target area (34) passes through the coolant container (20). |
