| 摘要 |
To enable an antenna device to be easily mounted to a roof or the like, and to realize a highly reliable state of the antenna device after mounted. The invention relates to an antenna device comprising an antenna element, and a bottom cover and a top cover which cover the antenna element. The bottom cover includes a base projection to be inserted into an opening formed in a mounting part, a washer having an elastic force being fitted over this base projection, and the washer comes into contact with an inner face of the mounting part thereby enabling the antenna device to be mounted and fixed. The washer is inserted into the opening in the mounting part in a state fitted over the base projection, and recovered to its original shape by the elastic force after the insertion, thereby to be brought into contact with the inner face of the mounting part.
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