Inactivation device and light irradiator

The invention relates to an inactivation device and a light irradiator. The invention provides an inactivation device which improves convenience. The inactivation device is provided with: a light irradiator provided with a light source for emitting ultraviolet light for inactivating a pathogen; a fixed base part on which the main body of the light irradiator can be attached and detached; and a control unit that switches the control of the lighting state of the light irradiator between when the main body is attached to the fixed base and when the main body is detached from the fixed base. 本发明涉及灭活装置及光照射器。本发明提供一种灭活装置，提高了便利性。灭活装置具备：光照射器，具备射出将病原体灭活的紫外光的光源；固定基部，能够装卸所述光照射器的主体；及控制部，在所述主体被安装到所述固定基部时与所述主体从所述固定基部被卸下时之间，切换所述光照射器的点亮状态的控制。