Patent attributes
An LED display device for displaying a pattern on a rotatable object is disclosed. When the rotating object rotates with a high speed, the pattern will be displayed. The device comprises a first printed circuit board on the rotatable object; at least one bank of light emitting diodes being arranged on the first printed circuit board; a second printed circuit board having a bank of elastic sheets; a third printed circuit board having a conductive pattern thereon; the third printed circuit board do not rotate with the rotatable object. The first printed circuit board and second printed circuit board will rotate with the rotatable object; and the elastic sheets are capable of being in contact with the pattern of the third printed circuit board; and each elastic sheet is connected to a corresponding LED; and the third printed circuit board is connected to all the light emitting diodes.
