When securing a child seat placed on a seat to the seat using a seat belt, a region through which the seat belt is to be routed are illuminated by a lighting device. When a child seat 1 is placed on the seat and a start switch 44 is pressed, a lighting dev...

A vehicle-mounted three dimensional sound signal reproducing . silencing unit includes at least two speakers (3L1-3L3, 3R1-3R3) disposed for each of seats to be occupied by listeners (1) so as to generate a three dimensional sound field space in a region i...