Self-cleaning lighting device

The invention relates to with self-cleaning illumination device, comprising a light source and layer, wherein the gap layer to allow to at least one part of radiations of a light source under a to penetrate, wherein the gap layer at least at least one part of coating on two surfaces is provided with a photocatalytic discharge coating. With the invention is; the lowest degree of illumination condition, wherein the photocatalytic activeness is high enough to be degrade or reducing the organic pollution, and hydrocarbon degrading or the reducer and easily and the horizontal is a nonstick and granule, and/or a entrust with and horizontal hydrophilic the. The invention also relates to a method of said component; the bottom of the semi-transparent gap layer, the invention also relates to the bottom of the cylinder light, the porous lighting and illumination runner; the inner lighting or conveying means' of the front light or the signal lamp.