a shutter rolling mechanism comprises at least two rolling means adapted to roll a shutter around them the rolling means are disposed with their rolling axes parallel and coinciding with each other within an installation space . a driving means is attached to at least one of the rolling means , and a shutter is attached at one end to one of the two rolling means and is disposed so as to roll over one of the rolling means and then over the other rolling means when in stowing action , and to be rolled from the rolling means when in deploying action . the driving means is adapted to drive the rolling means to wind the shutter over the rolling means in one rotational direction and to deploy the shutter in a second rotational direction .