The present invention pertains to a resin component disposed in the path of a beam emitted by radar equipment, the resin component comprising a thermoplastic resin composition which has an ash content of 0.2 mass% or less, and which contains a rubbery polymer reinforced vinyl resin in which a polymer part, which is derived from an ethylene/ α -olefin rubber having an amount of ethylene unit of 50-95 mass%, and a vinyl resin part are chemically bonded. The ethylene/ α -olefin rubber is preferably an ethylene/ α -olefin copolymer.
