PROBLEM TO BE SOLVED: To provide an LED-UV printing ink hardening device capable of realizing an improvement in a hardening speed and an improvement in working efficiency.SOLUTION: An LED-UV printing ink hardening device comprises an LED light substrate 1 having a cooler 11, a casing 2, and a partition wall 3 for isolating an inner chamber of the casing 2 into a left part of becoming an intake chamber 2A and a right part of becoming an exhaust chamber 2B, and a longitudinal directional opening part 211 is provided on a bottom wall 21 of the casing 2, and the LED light substrate 1 is installed on the longitudinal directional opening part 211, and the longitudinal directional opening part 211 is formed in the center of the bottom wall 21 of the casing 2, and the partition wall 3 is drawn up to an upper wall 22 of the casing 2 from the upper end of the cooler 11, and the bottom wall 21 of the casing 2 on both sides of the LED light substrate 1 is provided with an intake hole 213 and an exhaust hole 214 respectively communicating with the intake chamber 2A and the exhaust chamber 2B, and air is sucked in the intake chamber 2A via the intake hole 213, and the air is exhausted from the exhaust chamber 2B via the exhaust hole 214.SELECTED DRAWING: Figure 1
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