| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive LED(light emitting diode) display device having high visibility for an observer. SOLUTION: This LED display device is constituted of a main display part consisting of a plurality of LED1 for main display which are arranged in a predetermined pattern and a sub-display part consisting of a plurality of LED2 for sub-display having light emitting colors different from those of the LED1 for main display and which are preliminarily arranged at surroundings of the main display part and a driving circuit 3 driving the LED1 for main display of the main display part and the LED2 for sub-display of the sub-display part.
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