| 摘要 |
A concealable surgical light device such as for a birthing room has a frame for supporting the light on one side and a decorative panel on the other side. The frame includes reinforcing ribs positioned in a Y shape, and a cylindrical section at the intersection of the ribs for attaching the light. The frame is rotatably supported inside a housing which is fixed within the ceiling structure. At one end of the housing there is a fixed tube and a bearing and at the other end is an output shaft of a speed reducer gear connected to the frame through a torque limiter and slip clutch for rotatably supporting the frame. Wires are fed through the tube without being subjected to rubbing or twisting. In a closed position of the frame, the light is concealed within the ceiling structure and the decorative panel is flush with the ceiling. In an open position, the light is deployable as it faces into the birthing room. Rotation of the frame between the two positions is powered by a motor, through the reducer gear and torque limiter. On the fixed housing there is one limit switch engageable by a tab on the frame to detect when the frame is proximate the open position, and another switch and tab pair detects proximity to the closed position. In response to detection, the motor turns off. |
