POWER TRANSMISSION DEVICE, AND DISPLAY DEVICE AND DISPLAY PANEL PEDESTAL THAT HAVE THE POWER TRANSMISSION DEVICE

摘要

Provided are a power transmission device where torque to be applied to an output shaft can be easily adjusted and a backlash between gears can be reliably removed, and a display device and a display panel pedestal that are provided with the power transmission device. The power transmission device (101) has a display panel (102), an output shaft (103) to which the display panel is connected, output gears (104, 105) rotated integrally with the output shaft, transmission gears (106, 107) meshing with the output gears, motors (108, 109) for applying driving force to the transmission gears, and a control circuit (110) for controlling the motors. The control circuit (110) causes the motors (108, 109) to drive the transmission gears (106, 107) at different rotation speeds to transmit different magnitudes of driving force to the output gears (104, 105). The output shaft (103) receives, besides torque in the direction of rotation of the shaft, torque in the opposite direction to the rotation direction of the shaft, and this suppresses occurrence of play caused by a change in the direction of torque produced by the weight of the display panel (102) it self.