Patent ID: 8599076

Claim:
A radio wave receiver comprising: a cylindrical metallic device body which includes a first screw portion; a metallic first closing member which closes an opening at a first end of the device body; a second closing member which closes an opening at a second end of the device body and which has radio wave permeability; a fixation screw which includes a second screw portion and a head portion to fasten the device body and the first closing member; and an antenna arranged in the device body, wherein the second screw portion of the fixation screw is engaged with the first screw portion of the device body in a state that the second screw portion is inserted into a through-hole formed in the first closing member, wherein a coupling resin member having electrically insulating property is disposed between the fixation screw and the through-hole, the coupling resin member being coupled to the first closing member through a great number of irregularities of a nanometer size formed on a wall surface of the through-hole, and the coupling resin member including an insertion hole through which the second screw portion of the fixation screw is inserted and a wall surface with which the head portion of the fixation screw is in contact.