LED-USING LIGHTING DEVICE Russian patent published in 2013 - IPC F21S13/10 

FIELD: electrical engineering.

SUBSTANCE: lighting device contains a body having an open bottom and a depression the diameter whereof increases in the lower part, the depression side surface divided into multiple mounting surfaces, multiple cooling fins (predominantly formed on the outer side surface in a radial shape so that to be spaced at equal intervals), multiple light source units positioned on the mounting surface on the body inside containing multiple LED modules installed on the body outside surface for angle adjustment, having multi-stage slanted surfaces. The said multi-stage slanted surfaces are set at different radiation angles and luminosity and are positioned at stops selectively determined on the multiple mounting surfaces for light emitted from the LED modules to be able to ensure the preset light distribution type and a protective element for closing the body lower part.

EFFECT: possibility to ensure varied light distribution characteristics required for road lighting.

13 cl, 10 dwg