| 摘要 |
The present invention discloses an LED traffic signal lamp. Power supplied from an AC power unit is converted into DC power through a full-wave rectifying unit to drive an LED block unit. The LED traffic signal lamp includes a detecting unit, a drive terminal and an emergency lamp unit. The detecting unit detects an error detection signal by detecting an operation of the LED block unit, a drive terminal is driven according to the detection signal detected by the detecting unit, and an emergency lamp unit is driven by the drive terminal.
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