Patent ID: 8608339

Claim:
An outdoor lighting device for lighting a target, comprising: a support structure; a lighting unit stably associated with said support structure; one or more reflecting surfaces defining a hollow body having an outwardly directed aperture; and one or more light beam sources of a light emitting diode (LED) type having predetermined full width at half maximum (FWHM) values of a respective luminous spectrum, said LED sources-being arranged into said hollow body to direct said light beams toward said reflecting surfaces; wherein said outwardly directed aperture faces toward a target, all of said reflecting surfaces being arranged into an interior space of said hollow body and are so shaped that at least one of said LED sources has the FWHM of its luminous spectrum totally reflected by at least one of said reflecting surfaces and totally projected towards a target, for increased lighting efficiency of the device; said one or more reflecting surfaces including first reflecting surfaces and second reflecting surfaces; said LED sources being arranged along the peripheral borders of said hollow body and facing said second reflecting surfaces; wherein said second reflecting surfaces are planar, are arranged centrally with respect to said hollow body and are converging towards said outwardly directed aperture.