Patent ID: 6344803
Filing Date: 2002-02-05
Classification: H01Q

Abstract:
A radio apparatus for transmitting data to a vehicle-mounted unit mounted on a vehicle and receiving data therefrom, said data being for toll collection, said radio apparatus comprising:a housing comprising: a base comprising a radio device body accommodating recess portion; and an antenna accommodating recess portion; wherein the radio device body accommodating recess portion and the antenna accommodating recess portion are disposed back to back with each other; and further wherein a surface part of the antenna accommodating recess portion is a radio wave reflecting portion; a base cover covering said radio device body accommodating recess portion of said base, and defining a radio device body accommodating portion accommodating said radio device body together with said base; and an antenna cover covering said antenna accommodating recess portion of said base, and defining an antenna accommodating portion accommodating said antenna together with said base; a radio device body accommodated in said housing; and an antenna accommodated in said housing and connected to said radio device body.