An operator compartment of a rail vehicle includes two front windows separated by a connection beam, a track monitoring camera attached in a lower region of the connection beam by a fastening device, and a front window roll-up sun shield which can be drawn in the interior of the operator compartment and has guides running along both sides of the front windows. The guides have lower retaining devices. In order to allow a comparably simple attachment of the roll-up sun shield and the track monitoring camera in the operator compartment, a longitudinal member is attached to a lower region of the connection beam. The longitudinal member retains the fastening device, has mutually opposite guides and has the lower retaining devices for the roll-up sun shield. An assembly device for a track camera and a front window roll-up sun shield of a rail vehicle is also provided.