<；P>；PROBLEM TO BE SOLVED: To solve the problem that the effective utilization of system resources is not necessarily sufficiently performed in a system constituted so as to perform the control of a user's safety by providing a position detection means of a user on a bed in a hospital or aged person facilities. <；P>；SOLUTION: In the automatic illumination control mechanism, a presence-on-floor detection means 5 for detecting the presence of the person on the floor part of a bed 4 and a control means 13 having an automatic illumination control mode for controlling the lighting of an illuminator on the basis of the output of the presence-on-floor detection means are provided to the bed 4. The control means always monitors the output signal of the presence-on-floor detection means in an automatic illumination control mode and the presence-on-floor detection means controls not only the lighting of the illuminator at the time of non-detection of the presence of the user on the floor of the bed but also the lights-out of the illuminator at the time of detection of the user on the floor of the bed. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
