Cooling device used in UV inkjet printer lamp box

A cooling device used in a UV inkjet printer lamp box disclosed by the present invention comprises an inkjet printer lamp box, a first air pump and a cooling assembly, the inkjet printer lamp box is installed on an inkjet printer, one side of the inkjet printer lamp box is communicated with the first air pump through a first air delivery pipe, the first air pump is communicated with the cooling assembly through a second air delivery pipe, and the second air delivery pipe is communicated with the cooling assembly. The side, away from the second air conveying pipe, of the cooling assembly communicates with the inkjet printer lamp box through a third air conveying pipe, the second air conveying pipe and the third air conveying pipe are located on the two sides of the inkjet printer lamp box, and a control module is fixedly installed at the top of the cooling assembly. Low-temperature gas can be input into the inkjet printer lamp box through the cooling assembly and the first air pump, high-temperature gas can be