Abstract: An ionizer incorporated with an electronic appliance utilizes the power supply of the appliance so that only less device and space are required for the additional ion function. The small power-consumption ionizer does not influence the original function of the electronic device while the negative ions help refreshing the air and improving people's moods, energy and health.

Abstract: An electronic device having a replaceable casing panel comprises a first portion and a second portion. The first portion includes a gliding member having a plurality of second positioning elements corresponding to a plurality of first positioning elements, and each second positioning element includes a fixing element for fixing the gliding member in the first portion and restricting the moving direction of the gliding member, and the gliding member includes a first panel that slides with the gliding member. The second portion includes a second panel having a plurality of third embedding elements and a plurality of fourth embedding elements embedded with each other, and the second portion includes a plurality of first embedding elements and a plurality of second embedding elements, such that the first panel can be pushed to form a gap for replacing the second panel.