Widening the width of the head rest 52 in the bus seat 50 is a through-hole formed in the upper end of the seat 50 in order to improve the discomfort of the occupant by failing to stably support the head of the occupant at bedtime (1) and the slide means configured to be inserted and fixed in the through hole (1) and to adjust the spacing by horizontally moving the formed headrest (2) by a predetermined click so that passengers can travel more comfortably. do.
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