The present invention relates to a communication terminal having a bone conduction function. The conduit member has a fluid tube, and air tube and an end cap. The color-emitting phosphor stripes each have a width slightly smaller than one-third of the screen pitch, such that large clipping and leaving tolerances may be achieved therewith. The shade is mounted to the tubular part to rest the lip on the flange. With this circuit configuration, simple though it is, even if there are instantaneous variations in the voltages fed from a plurality of receivers connected, no variations appear in the currents respectively extracted therefrom. The output of the vertical cavity surface emitting lasers are re-directed by a moveable element to an optical output.