Patent ID: 7339538

Claim:
An antenna unit comprising: an antenna case comprising a top cover and a bottom plate that are joined together; an antenna module disposed in said top cover and adapted to receive a radiowave; and a packing member disposed at a joining portion between said top cover and said bottom plate to thereby ensure sealing of said antenna module, wherein said packing member comprises a plurality of anti-slip projecting portions, wherein said bottom plate has a plurality of through holes which receive said plurality of projecting portions, respectively, so that the projecting portions pass therethrough, wherein a diameter of each of said through holes is greater than a diameter of each of said projecting portions to thereby provide a clearance between each through hole and the projecting portion passing therethrough, and wherein each of said projecting portions has a length such that any projecting portion in a state in which the projecting portion is elastically deformed laterally does not abut an edge of the through hole through which the laterally elastically deformed projecting portion passes.