http://www.w3.org/ns/prov#value | - erature in a vicinity of the infrared imaging device by using a mechanism in the vehicle. [0037] It is preferred that the temperature retaining structure circulates an engine coolant of the vehicle in the vicinity of the infrared imaging device. [0038] The present invention also provides an infrared imaging device to be installed in a vehicle, the infrared imaging device including a mechanism for
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