Purpose of the present invention is the realization of a LED illuminating device, more specifically a LED lamp structure with standard caps (Edison, bayonet.. ) and therefore ready to install on any existing lighting system, able to break down, thank you to its own technical and constructive characteristics, the microbial load present in the environments in which the luminaire is installed. The device also allows a power consumption not different from the one of a standard LED bulb/lamp, does not employ photocatalytic materials classified as hazardous, does not emit wavelengths that fall in the ultraviolet region but only in the band 405-420 nm, and can be supplied with a thermostated lighting room and an articulated endowment of sensors and management technologies.