| 摘要 |
A display device which includes a simplified wiring for respective display elements is provided to facilitate the assembly and maintenance. The display device is constituted of a large number of display units (50) arranged in a matrix, each including a display element (10) composed of a light bulb, a regulator (51) composed of a relay, an nonvolatile memory (52) composed of an EEPROM, and a controller (53) composed of a CPU. A common electric power transmission line (61) and a common signal transmission line (71) are wired for the plural display units (50). A display signal including address information and data information is supplied to the signal transmission line (71). Each controller (53) controls an associated regulator (51) to light on/off an associated display element (10), based on the data information in the display signal only when the address stored in the nonvolatile memory (52) agrees with the address information in the display signal.
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