Abstract: The application discloses an air sterilizer. The air sterilizer includes a housing an ultraviolet light generator, and a reflector. The housing is provided with a first cavity, and the housing is provided with an air inlet and an air outlet, both of which are located at the first cavity. The ultraviolet light generator is also located in the first cavity. In the embodiment of the present application, an ultraviolet light generator is placed in the first cavity of the air sterilizer. The air flows in through the air inlet. When the air flows through the first cavity, it is sterilized by the ultraviolet light generator, and then flows out from the air outlet. The toxic or harmful substances in the air can be inactivated by ultraviolet light sterilization, which improves the sterilization and disinfection ability of the air sterilizer, and solves the problem of poor sterilization and disinfection effects of air sterilizers in the prior art.

Abstract: The present invention provides a mask. The mask includes a mask body, a filter module installed on the mask body, a light source and a photocatalyst plate. The filter module includes a cavity, and it is provided with an air inlet and an air outlet which are located in different regions of the filter module. The photocatalyst plate and the light source are both located in the cavity. The surface of the photocatalyst plate is covered with a photocatalyst coating, and the light emitted by the light source irradiates the photocatalyst plate. In the embodiment of the present invention, by placing the light source and the photocatalyst plate in the cavity of the filter module, the photocatalyst generates strong oxidizing substances under light irradiation, which substances can inactivate harmful substances. Therefore, by placing the light source and the photocatalyst plate in the cavity of the filter module, harmful substances entering the mask can be sterilized and inactivated.

Abstract: The present invention provides a photo-electronic air disinfector, which comprises a housing containing a fan, a UVC light source, a photocatalyst module consisting of a structure with entire surface area coated with a photocatalyst positioned by the side of the UVC light source, an air guide unit installed with reflecting mirrors on the internal walls of the unit. When air is drawn in the air guide unit of the device, the photocatalyst after absorbing UVC light emitted by the UVC light source or reflected through the mirrors generates superoxide (O2—) and hydroxyl radical (—OH) with strong oxidation power, which can decompose organic matter and various germs in the drawn in air and render them harmless.