Patent ID: 8362370

Claim:
An electronic circuit board, comprising: a plurality of conductor parts that extends and contracts, and is arranged in a standing state on a ground pattern that surrounds an electronic component on the electronic circuit board; a conductive plate which covers an entirety of a surface of an electronic component mounted side of said electronic circuit board, and which is brought into electrical contact with said ground pattern by said conductor parts; and securing members arranged in a circumference of said electronic circuit board, for holding said conductive plate such that said plurality of conductor parts contacts said plate in a state in which said conductor parts contract from their natural length; wherein said plurality of conductor parts is arranged on an inside of the circumference by said securing members for an area bounded by said plurality of conductor parts which becomes smaller than an area bounded by said conductive plate, and said plurality of conductor parts is positioned to stand adjacent to a location whose value is not greater than a value determined according to electromagnetic waves radiated by the electronic component.