Patent ID: 7898791

Claim:
An ionizer with drop-off prevention device for electrode comprising: a housing having a lower surface where an electrode-attaching opening is opened, and side surfaces both continuing into the lower surface; an electrode cartridge detachably attached into the electrode-attaching opening; and a drop-off prevention cover attached to the housing, for preventing the electrode cartridge from dropping off, wherein the electrode cartridge is formed by means of causing a hollow electrode holder having an elliptic cross-section to hold a pair of electrodes, and is free to be engaged with and disengaged from the housing by means of being rotated around a center axial line in the electrode-attaching opening, and wherein the drop-off prevention cover is detachably attached to the housing and is provided with a restraining portion for restraining the electrode cartridge, and wherein the drop-off prevention cover is constructed so as to prevent the electrode cartridge from dropping off by means of limiting a rotation of the electrode cartridge by the restraining portion.