A lighting fixture includes a directional light source that produces a plurality of light rays. The device includes a lifting device fixed for example to a vessel, a cage of separation adapted to be lowered into the water between the ice blocks by means of the lifting device and formed by a box which lets water and oil but substantially no ice, and an oil collector for collecting the oil on the water surface in the space defined by the separation of cage. The core includes a storage layer that also defines a wearer facing side and an opposed garment facing side. The centrifugal rotor is caused to rotate by means of a pressure fluid that is generated by means of the combustion engine.