To provide an LED lighting unit capable of achieving highly effective illumination while avoiding overheating of an LED light source which may be damaged, and exchanging the LED light source at the time of need.

The LED lighting unit includes: a shade 26 with openings at both ends, on which a reflecting surface 25 whose inner surface is made in a shape of a parabolic mirror is formed; a light-diffusing lens 7 arranged on one opening end of the shade 26; a substrate wall 16 where an LED module 8 is arranged toward the reflecting surface 25 of the shade 26 at a central axis line of the shade 26; at least one or more of LED modules 8; and a heat radiation part 14 integrally connected with the substrate wall 16 and exposed from the other opening end of the shade 26.