An illumination optical system for an image pickup apparatus includes a plurality of light sources arranged in a circular loop pattern and a prism plate shaped like a circular loop. The coverings are constructed for the accommodation of switches. The pins are adapted to be received by the passages defined by the ends of the first rigid member and of the second rigid member so as to secure the first rigid member in a spaced and generally parallel relationship to the second rigid member. Current created from the operation of a first pulsed-power device is routed to the armature coil in a second pulsed-power device to charge the associated HTS to a higher value. This portable safety device helps the passenger to better and more safely balance and steady himherself with respect to the vehicle and its operator.