A sanitary washing device including: a nozzle discharging water toward a human body private part; a water guide part including a pipe line reaching from a water supply source to the nozzle, and guiding water supplied from the water supply source to the nozzle; a vacuum breaker provided on a path of the water guide part, and taking air into the pipe line when water does not flow in the water guide part; and an ultraviolet irradiation part provided between the vacuum breaker and the nozzle on the path of the water guide part, and including a flow channel flowing water and a light emitting part irradiating ultraviolet rays to the water flowing in the flow channel is provided.

A UV disinfectant system may include a chamber having a wall that is transparent to a disinfecting radiation. Liquid may be flowed through the chamber for treatment by exposure to the radiation. The chamber may include a static mixer having vanes to impede laminar flow of the liquid during treatment. The vanes extend into the flow path of the liquid through the chamber. A gap is defined between the vanes and the transparent wall. A cabinet may house the chamber and radiation emitting bulbs. Blowers may be operably coupled to a temperature sensor and flow meter and positioned at a lower end and upper end of the cabinet to urge air out of the cabinet. The temperature sensor may include a thermocouple. The blowers may be variable speed blowers. The system may include a controller to control system operations. The controller may be remotely accessible to monitor or control operations.

A system including a tube for transferring fluid and a lighting assembly. The lighting assembly includes a housing having an opening that is configured to receive the tube and one or more light sources configured to emit high intensity narrow spectrum light in a direction towards the tube when the tube is received by the opening.

To provide a light source module device capable of controlling the light distribution of ultraviolet light with a small and simple structure. A light source module device 7 includes a substrate 4, a light source 3 mounted on the substrate 4 and emitting ultraviolet light, a reflector 8 mounted on the substrate 4 so as to surround the light source 3 and reflecting the ultraviolet light by its inner surface to guide the ultraviolet light toward an irradiation target, and a cap-like optical member 9 mounted so as to cover the outer circumference of the reflector 8 and condensing or diffusing the ultraviolet light.

A sterilizing device includes a pipe having an inlet and an outlet and allowing fluid to move therethrough and a light source provided on one side of the pipe and providing light to the fluid. At least a portion of the pipe is provided in a spiral shape and the inlet and/or the outlet are arranged in a light emitting region.

A water dispensing unit adapted for communication with a water supply includes a spout configured to receive water from the water supply and dispense the water to a receptacle for consumption. The water supply includes water received from a municipal water supply and contained within a space directly upstream of a base of the spout. A flow of water from the water supply and into the spout via the base is a downstream water flow. A disinfecting mechanism operable to disinfect water in at least one of the spout or a space immediately upstream of the spout.

A fluid treatment system includes a reactor chamber fluidly coupled with a fluid inlet and a fluid outlet. The reactor chamber is defined by one or more chamber walls. The system includes a UV LED, and a light pipe. The light pipe extends into the reactor chamber through at least one of the chamber walls. The light pipe has a proximal end disposed outside of the reactor chamber. The proximal end is coupled with the UV LED to transmit UV light into the reactor chamber through the light pipe. To that end, the light pipe also has a distal end, opposite the proximal end, that is disposed within an interior volume of the reactor chamber. The light pipe includes a central section disposed between the proximal end and the distal end. The central section is configured to transmit the UV light from UV LED to the distal end.

The present invention relates to a UV lamp having an axial dimension normal to a cross-section having a cross-sectional area with a ratio of the axial dimension to the cross-sectional area in the range of 0.1 cm/cm.sup.2 to 1000 cm/cm.sup.2. The UV lamp includes a first axial conductor separated from a second axial conductor by an electrically insulating material and a light emitting diode (LED) capable of providing light at a wavelength in the range of 100 nm to 400 nm, which LED is mounted to emit light from an outer surface. The invention also relates to a method of sterilising a surface using the UV lamp.

The present disclosure concerns module for disinfecting water by UV radiation, for example source or miming water to be disinfected for the purpose of serving as drinking water. In particular, the present disclosure provides a UV-LED radiation-based modules for disinfecting water before consumption, the modules include at least one removable lens for prolonging the service life of the module.

A water disinfecting device has a housing, an inlet, an outlet, a high-power disinfecting light, at least one quartz pipe that carries water, and a reflective surface for increased dosage. By placing multiple quartz pipes side by side, the device can disinfect greater quantities of water, or provide for double exposure of water passing through the pipes. By using a powerful UV light and a reflective surface from the outside of a quartz pipe, the device is capable of disinfecting at a much higher success rate than other disinfecting devices found in the prior art while also allowing for ease of maintenance.