LIGHTING DEVICE Russian patent published in 2022 - IPC F21S4/28 F21V13/00 

FIELD: lighting engineering.

SUBSTANCE: lighting device belongs to the field of lighting engineering and is intended for use as a lighting device in office, retail, sports, industrial and other, for example, domestic premises. The claimed lighting device contains a carrier surface with radiation sources installed on it in the form of LEDs and a set of reflective surfaces, excluding direct observation of radiation sources that form the radiation indicatrix they create, reflections and the final indicatrix of the total luminous flux. The carrier surface is made in the form of a polyhedral, including a truncated, pyramid, on the faces of which radiation sources are installed in the amount n1, selected within 1≤n1≤10², forming the radiation indicatrix together with the reflecting sections of the carrier surface, the total area S1 of which is selected in relation to the area S2 of the entire bearing surface within 1≤(S1+S2)/S2≤1.7, the polyhedral pyramid is made with the number of faces n2, selected in relation to the number n3 of the maximum possible number of faces within 1,003≤(n2+n3)/n3≤2.

EFFECT: increasing the uniformity of the radiation intensity in space in the range of its observation surfaces.

4 cl, 4 dwg