Some embodiments of the present disclosure disclose a novel disinfection purifier. The novel disinfection purifier includes: a purifier housing, and a purification device body and an air suction device disposed inside the purifier housing. Air passes through the purification device body by means of the air suction device and is sterilized. An air inlet is provided on a side wall of the purifier housing, or an air inlet is provided on a bottom of the purifier housing, or an air inlet is provided on a side wall of the purifier housing and a bottom of the purifier housing, and an air outlet is provided on a top of the purifier housing. The purification device body includes a disinfection portion and a filter portion sleeving an outside of the disinfection portion.

In some examples, a device comprises a sanitizing member including a hollow tube having a reflective inner surface and first and second ends. The sanitizing member includes an ultraviolet (UV) light-emitting diode (UV-LED) at the first end. The second end has an orifice exposing the reflective inner surface to an environment of the device. The device also includes a facemask having an air valve coupled to the sanitizing member.

In some examples, a device comprises a sanitizing member including a hollow tube having a reflective inner surface and first and second ends. The sanitizing member includes an ultraviolet (UV) light-emitting diode (UV-LED) at the first end. The second end has an orifice exposing the reflective inner surface to an environment of the device. The device also includes a facemask having an air valve coupled to the sanitizing member.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that is capable of changing an emission mode and/or an emission angle. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, and a driving unit configured to move the sterilization unit.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that has improved heat dissipation performance and is capable of being changed in position. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, a driving unit configured to move the sterilization unit, and a cover having a structure accommodating the sterilization unit and allowing the inside of the cover to communicate with the outside. A heat sink is provided in the cover in order to dissipate heat from the sterilization unit.

An irradiation method includes irradiating an environment with light using one or more one ceiling-mounted light sources, where each ceiling-mounted light source has an optical axis oriented vertically downward, and wherein each ceiling-mounted light source emits a light distribution having more angle-integrated intensity in a higher angular range relative to the optical axis of the ceiling-mounted light source than in a lower angular range relative to the optical axis of the ceiling-mounted light source. A ceiling-mounted light source may include a support structure, one or more light emitters disposed on a surface of the support structure, and a reflector with a funnel-shaped reflective surface facing the support structure and expanding with increasing distance from the support structure along the optical axis. The light emitters may be ultraviolet (UV) light emitters whereby the light source is a UV ceiling-mounted light source.

An example embodiment of an upper room air germicidal light fixture may comprise a light source configured to emit germicidal light and may further comprise one or more lower and upper baffle assemblies disposed adjacent to the light source. Said upper and lower baffle assemblies may be configured to enable air to flow through them and to block or substantially dissipate incident light rays from the light source. One or more apertures may be defined by the openings between a corresponding set of upper and lower baffle assemblies, wherein said light can exit the fixture through said apertures. When the germicidal light fixture is disposed in a room, surrounding room air may contact light exiting the apertures of said fixture, and room air traveling through said fixture may contact light inside and between the one or more upper and lower baffle assemblies.

An example embodiment of an upper room air germicidal light fixture may comprise a light source configured to emit germicidal light and may further comprise one or more lower and upper baffle assemblies disposed adjacent to the light source. Said upper and lower baffle assemblies may be configured to enable air to flow through them and to block or substantially dissipate incident light rays from the light source. One or more apertures may be defined by the openings between a corresponding set of upper and lower baffle assemblies, wherein said light can exit the fixture through said apertures. When the germicidal light fixture is disposed in a room, surrounding room air may contact light exiting the apertures of said fixture, and room air traveling through said fixture may contact light inside and between the one or more upper and lower baffle assemblies.

A lighting assembly for an aircraft includes a visible light source generating visible light and an ultraviolet light source generating ultraviolet light. The visible light source is disposed adjacent to the ultraviolet light source. The visible light source illuminates a first illumination area with the visible light when the lighting assembly operates in a first operation mode. The ultraviolet light source illuminates a second illumination area with the ultraviolet light when the lighting assembly operates in a second mode of operation. The first illumination area substantially overlaps the second illumination area.

A process for using photocatalytic load reduction to extend reactive media filtration life is disclosed for an air purification system. The system consists of three methods of cleaning the air including a UV light, a photocatalyst, and an air purifier. Air first passes through a portion with the UV light and photocatalyst, and then through the purifier. Passing the air first through the UV light and photo catalyst before the purifier reduces the load on the purifier and thus allowing the purifier to operate and clean the air for an extended period of time as compared to the purifier alone.