An intelligent speed limit prompting board

The invention provides an intelligent speed limit prompting board, comprising a substrate and a first prompt signal lamp assembly arranged on the front face of the substrate. A control box is also arranged on the back of the substrate, and a power supply, a controller, a data memory, a wireless communication transmission unit for communicating with an external communication terminal and a temperature sensor for real-time monitoring the internal operating temperature of the control box are arranged inside the control box. The first prompt light assembly includes a plurality of first prompting lights for displaying predetermined numeric characters. The substrate is provided with through holes with different character patterns and for combination with the first prompting lights which are formed at the position of the first prompt signal lamp assembly. In actual use, when the rotating signal lamp panel is driven by the driving motor, the digital character switching of the first prompt signal lamp assembly can be