An LED illuminator includes an LED chip and an opaque resin member. The LED chip includes a support substrate, a semiconductor layer disposed on the obverse surface of the support substrate, an electrode formed on the reverse surface of the support substrate. The obverse surface of the support substrate has a peripheral edge portion exposed from the semiconductor layer. The opaque resin member covers at least apart of the side surface of the support substrate while exposing the peripheral edge portion of the obverse surface of the support substrate.