Ushio Denki Kabushiki Kaisha

Akihiro Kuno

Hideaki Yagyu

Shigeki Fujisawa

Keisuke Naito

Keiichi Maeda

Provided is an ultraviolet light irradiation device that is capable of causing effective inactivation of microorganisms as well as a method of using the ultraviolet light irradiation device. An ultraviolet light irradiation device includes a light source that radiates ultraviolet light with a wavelength in a range of 190 nm to 235 nm; a housing that houses the light source; an extracting portion that extracts the ultraviolet light that is radiated from the light source and causes it to be directed toward an exterior of the housing; and a diffusing member that diffuses the ultraviolet light.

Ultraviolet light irradiation device, method of using ultraviolet light irradiation device, and ultraviolet light irradiation method

The startability of an ultraviolet ray generation device including an excimer lamp as an ultraviolet light source is to be improved. An ultraviolet ray generation device includes: an excimer lamp having a discharge container in which a discharge gas is sealed; a first electrode body and a second electrode body that are disposed so as not to be exposed to the discharge gas; and a first conductor electrically connected to one of the first electrode body and the second electrode body. The first conductor faces the other electrode body or a second conductor electrically connected to the other electrode body, through a dielectric member. The first conductor causes an atmospheric discharge around the first conductor.

Ultraviolet ray generation device

The short-arc discharge lamp includes a pair of electrodes arranged facing each other inside a light-emitting tube, the pair of electrodes made of a material containing tungsten; a coating formed on the first outer surface of at least one of the pair of electrodes, the coating made of a material containing ceramics; and tungsten particles adhered to a part of the second outer surface of the coating.

Growing community of inventors

Tokyo, Japan

Akihiro Kuno