| 摘要 |
PURPOSE:To make a large-sized display unit accord with safety standards in time of transportation, by mounting the display unit on a car's rear body in dividing it into two parts. CONSTITUTION:After a car is horizontally held in relation to the ground with each of outriggers 8, a roof cover 9 is flapped upward. In time of a car being traveled, both upper and lower display parts 5 and 6 are housed in a state of being opposed in their display surfaces centering on a fulcrum shaft 13 but in time of setting up their pictures, if a cylinder shaft 123 of a hydraulic cylinder 12 is extended longer by hyraulic pressure, an arm 15 obtaines its turning force in a clockwise direction with a bearing 151 as a fulcrum, transmitting the force to a rod 14 whereby the upper display part 5 is lifted upward with the fulcrum shaft 13 as a rotating center. When further the cylinder shaft 123 is extended yet longer, the upper display part 5 is stably mounted on the lower display part 6 under guidance of each of unevenness metal devices 16 and 17, thus setting up of these divided display parts into one is completed. |
