Backlight device, transportation device comprising backlight device and regulation and control method of transportation device

A backlight device is used for providing a light source and comprises a switching assembly, an image processor and an image generator. The image processor is electrically connected with the switching assembly and is used for generating a partition data signal. The image generator is electrically connected with the switching assembly and is used for generating an image signal. When the backlight device operates in a normal mode, the switching assembly receives the partition data signal, so that different blocks of the backlight device have different brightness. When the backlight device operates in a safe mode, the switching assembly receives the image signal, so that different blocks of the backlight device have the same brightness. 一种背光装置用以提供光源，包括一切换组件、一图像处理器，以及一图像产生器。图像处理器电性连接切换组件，且用以产生一分区数据信号。图像产生器电性连接切换组件，且用以产生一图像信号。当背光装置运作于一正常模式时，切换组件接收分区数据信号，使背光装置的不同区块具有不同亮度。当背光装置运作于一安全模式时，切换组件接收图像信号，使得背光装置的不同区块具有相同亮度。