A system for molding a jointed linkage support system with joints that allow movement and bending in many directions and degrees of freedom. The housing includes the locking levers along with a base plate to which the locking levers are individually mounted in association with a spring bias. The plunger rod includes a stopper of which at least a portion can be embedded in the passageway of the cap to form a plug in the cap. The second light-guiding block extends outside the display area and has at least one recess portion. The mobile TV device is then retuned to the newly selected channel at the next instance the demodulator and tuner are cycled on.