Patent attributes
To effective cool inside a lens casing in an LED lighting apparatus that hermetically houses LED elements in the lens casing, the present LED lighting apparatus includes a tubular lens casing having a first end face at which lighting lenses are provided and a second end face, a substrate on which LED elements are mounted, and a base part provided on the second end face side of the lens casing. The base part has a concave part housing therein the substrate. The lens casing is coupled to the base part by a coupling part with the second end face thereof fitted to the concave part, thereby sealing the internal space of the lens casing. The base part has heat radiating columns formed to protrude therefrom to an outside space, and the heat radiating columns radiate heat that the LED elements generate in the internal space through heat exchange with air.
