The present invention provides a display improved in an exterior appearance by a front cover, and a manufacturing method thereof, wherein the front cover covers a display panel and includes a translucent layer which transmits colored light, and a transparent layer to receive and transmit the colored light, wherein the translucent layer and the transparent layer are integrally formed. When the wiring harness guided out from the case main body is pulled or twisted at the time of recovery of the case main body, the axial portion of a securing bolt expands the slit 69b and escapes from the slit 69b so that the attachment bracket 65 detaches from the securing bolt. Thus the product may be shaped to fit a predetermined contour. During procedures which require withdrawal of material not to be collected, the control handle and baffle plate are adjusted to a pass-through mode which connects a internal adjustable conduit, which transverses through the baffle plate, with the lumen of the inlet and outlet conduits to form a continuous lumen with which to withdraw material not to be collected through.