This work is about an ion generating device,Including: embedded in the ceilingThe body with flange belowThe mask with air inlet and air outlet arranged under the bodyThe circuit control box arranged above the main bodyThe body is internally provided with an electrostatic atomizing device for generating ionsThe discharge outlet of the ion discharged through the electrostatic atomization deviceThe operation indicator light arranged on the main bodyOn the maskCircular counterbore at the position corresponding to the running indicator light,A plurality of protrusions composed of the first protrusion part and the second protrusion part are arranged at a position far away from the outer circumference of the mask,The flange of the body is provided with a plurality of openings which are clamped with the plurality of projections,The protrusion height of the first protrusion part is greater than that of the second protrusion part.The advantage of the invention is to provide a thin mask with higher safety.本創作係關於一種離子發生裝置,包括:埋設於天花板內、下方設有法蘭的本體、設於本體下方的帶進風口和出風口的面罩、設於本體上方的電路控制盒、本體內部設有發生離子的靜電霧化裝置、將通過靜電霧化裝置所發出的離子排出的離子排出口、設置於本體上的運轉指示燈、設置於面罩上的、與運轉指示燈相對應的位置的環形沉孔,在面罩的遠離面罩外周的位置設有由第1凸出部和第2凸出部所構成的複數個凸出部,在本體的法蘭上設有與上述複數個凸出部相互卡合的複數個開口,所述第1凸出部的凸出高度大於第2凸出部的凸出高度。本創作的優點在於,提供一種具有更高的安全性的薄型面罩。