a bunk arrangement including a partition device is providing which is especially suitable for use as a sleeping or storing compartment in a vehicle , especially a truck or a bus . in one alternative , the bunk arrangement includes a partition device with a partition wall with a plurality of wall elements , which are provided for folding together and defolding the wall , for retracting and extending it , respectively , and holding and guiding means for holding the partition wall and for guiding the same between a retracted arid an extended state .