A full color three electrode surface discharge type plasma display device that has fine image elements and is large and has a bright display. Using an ejector for recycling the cooling gas instead of using a mechanical compressor provides significant savings in electricity and in capital, operational and maintenance costs. The sensor includes a multi-layer radio frequency board with RF components on one of the sides and both isolation and planar array antennas on the opposing side. The first movable plate is fixed to and perpendicular to a first pushing plate of the pushing member. The first air passageway is in communication with the second air passageway. The keel and other structural elements can be in the form of a truss, rigid hollow cylindrical tubes, or air beams and stressed skin sheets, or combinations thereof.