The Paint Brush Holder is attached to a paint can by means of a clasp or clip 4, it is further stabalised by a exterior cresent shaped bumper 3. The method includes a step consisting in furnishing the detection signal and, when the detection signal changes over from the second state to the first predetermined state, a step consisting in making the said device change over from the waiting mode to the working mode and a step consisting in achieving image acquisition. As an alternative, the sleeping apparatus can have a panel having a foldable frame member having a folded and an unfolded orientation, with a fabric material covering portions of the frame member to form the panel when the frame member is in the unfolded orientation. The control chamber communicates with the inlet conduit and can be made to communicate via a control valve with a leak fuel chamber. Accordingly, it is possible to reduce the number of parts, save the labor of assembling work, reduce the mounting defects, and cut costs.