LED guardrail tube and LED guardrail tube light screen consisting of same
A technology of LED guardrail tube and circuit, which is applied in the direction of light source combination, electric lamp circuit arrangement, components of lighting device, etc., can solve the problems of restricting LED guardrail tube, complicated circuit, low reliability, etc., to expand the scope of application and improve the refresh rate. frequency, the effect of increasing brightness
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[0021] See figure 1 , the PCB board 1 in the LED guardrail tube is provided with a power supply positive line 2, a power supply negative line 4, a number of LED light-emitting units 6 and a number of driver chips 7, each LED light-emitting unit 6 consists of a red light-emitting diode (R), a green Composed of light-emitting diodes (G) and blue light-emitting diodes (B), connected in series with R1, R2, and R3 respectively; several driver chips are cascaded through four signal control lines 8; PCB board 1 is also provided with a single-line transmission control chip 5 The single-line transmission control chip 5 inputs a control signal through a signal control line 3, and the control signal enters the driver chip 7 through the single-line transmission control chip 5, and the driver chip 7 directly drives and controls the LED light-emitting unit 6 to emit light. The single-line transmission control chip 5 has an error indication function. When an error occurs in the LED guardrail...
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