| 摘要 |
<p>A rotary display device comprising one or more vertical arrays of light-emitting diodes (LEDs) are rotated and energized at a controlled rate so as to project a 360 degree floating image. The displayed images are viewable from all angles (i.e., 360 degrees). The LEDs and associated control electronics are rotated at a desired speed, e.g., between about 720 and about 3600 revolutions per minute, by an AC or DC motor. Display content is either pre-loaded to the rotary display or transferred to the rotary display during device operation via a cellular telephone, Wi-Fi, Bluetooth, etc. connection. The electrical power for the system, including the LED array and the control electronics, is provided via a contact-less rotary transformer that functions independently of the rotation speed.</p> |
