Patent ID: 7778044

Claim:
A tuner module comprising: a circuit which is a constituent component for tuning at a time of radio signal reception, and a metal case which is made of aluminum and which receives said circuit, wherein said circuit includes at least one IC component, wherein, in said metal case, a heat conductive sheet is provided between said at least one IC component and said metal case so as to be in contact with said at least one IC component and said metal case, wherein a heat radiating sheet is attached to an outer surface of said metal case in a region at least partially corresponding to a bonding region of said heat conductive sheet, wherein said circuit comprises a printed wiring board, and comprises, as the at least one IC component, a first IC component and a second IC component respectively mounted on both sides of said printed wiring board, wherein said metal case comprises aluminum-diecast upper and lower cases, and wherein said printed wiring board is sandwiched between said upper and lower cases such that said printed wiring board is provided in a space between said upper and lower cases, except for portions of the printed wiring board necessary for electrical connection to outside of the metal case.