A light-transmitting member is previously formed, and then integrally molded during a process of molding a structure member. The image pick-up device includes a pixel portion for converting a subject image into an electric signal, a scanning circuit for dividing the pixel portion into a plurality of areas, for non-linearly dividing the boundary of the areas of at least one side of the adjacent areas based on the unit of pixel, and a plurality of output circuits for individually outputting video signals. An accelerator pump is placed parallel to the throttle valve stem and the upper end of a piston rod thereof is brought into contact with the cam surface.