this description do not necessarily refer to the same embodiment furthermore specific formations structures or characteristics may be combined in a suitable way in one or more embodiments the references used herein are purely for convenience and therefore do not define the scope of protection or the extent of the embodiments in the drawings the reference 10 indicates the whole of a street lighting device which in the embodiment considered here takes the form of a pole or lamp post provided at its upper end with a light source 12 which can for example be an led lighting module lamp or luminaire in various embodiments the lamp 12 which is a first light source for lighting the street plane s from above operates by projecting a light beam 12 a downward toward the street plane for this purpose the lamp 12 can be supported by a pole or column 14 it will be appreciated that the use of this specific suspension or support structure is not essential various embodiments may for example make use of suspension on an overhead line mounting on a gateway support by means of a bracket affixed to the facade of a building or other arrangements the reference 16 indicates another light source which can also be an led lighting module for example and which is intended to serve as a further source of light radiation located in the lower part of the device 10 so as to be at a position closer to the street plane s than the first light source.