| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a sign display device capable of being used for an advertisement or the like by using an alternating LED (Light Emitting Diode) lighting unit, which is inexpensive, can be mass-used, is suitable to be used in cost and management, suitable for the use in the management. <P>SOLUTION: The alternating LED lighting unit for the sign display device is obtained by connecting a power supply terminal, a rectifier, a capacitor, one or a plurality of light emitting diodes to a printed circuit board to form an alternating light emitting diode lighting circuit set, housing the set in a synthetic resin case and filling it with a synthetic resin insulating material. <P>COPYRIGHT: (C)2008,JPO&INPIT |
