| 摘要 |
PROBLEM TO BE SOLVED: To exchange an information between indoor/outdoor information discrimination means simply and accurately by providing a non-contact type indoor information discrimination means which can exchange the information to a non-contact type outdoor information discrimination means provided on the outdoor of an automobile. SOLUTION: An indoor information discrimination means 3 is provided attachably/detachably on the recessed part provided on the back surface of a rearview mirror main body 2 and an antenna 31 which is the signal input/ output part to a built-in semi-conductor memory is exposed to the outside. Thus, as the indoor information discrimination means 3 is provided integrally on the back surface of the rearview mirror main body 2, the indoor information discrimination means 3 is always fixed on the position faced from the outside through a windshield and the information can be exchanged accurately between the indoor/outdoor information discrimination means. Of cause, whenever an automobile passes the installation position of the outdoor information discrimination means, it is not necessary to take out the information discrimination card from a pocket. As the indoor information discrimination means 3 is integrated in a dead space, the indoor space can be utilized effectively. |
