To provide a light source device and an illuminator for improving a heat radiation property of a light-emitting diode element, and achieving high-luminance light emission at low cost.

A light source device is constituted of: a resin mold 1 including a first opening spread upward in a central part, and a second opening of which a diameter is smaller than that of the first opening through a bottom of the first opening; a heat sink 2 embedded to close the second opening and partially exposed outside the resin mold 1; a light-emitting diode element 4 including a plurality of electrodes mounted on the heat sink exposed within the first opening; a plurality of lead frames 3a, 3b constituted of the same mold of the same metal member as the heat sink 2 of which one terminal is exposed within the first opening, and another terminal is pulled out of the resin mold; a bonding wire 5 connecting the lead frames 3a, 3b and the electrodes of the light-emitting diode element 4; a sealing material 7 constituted of a translucent resin charged on the light-emitting diode element 4; and a lens 8 constituted of a translucent resin mounted in an upper part of the sealing material 7.

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