ULTRAVIOLET IRRADIATION APPARATUS AND ULTRAVIOLET IRRADIATION METHOD

• Main Authors: OTSUKI, Shunya, KODAMA, Atsushi, YABUKI, Naoto
• Format: Patent
• Language: English; French; German
• Published: 24.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; SEMICONDUCTOR DEVICES

There is provided an ultraviolet irradiation apparatus that prevents exposure to ultraviolet light more reliably. The ultraviolet irradiation apparatus includes: a UVC-LED (12a) configured to emit ultraviolet light; a biosensor (11) disposed in the vicinity of the UVC-LED (12a) such that an irradiation area of the UVC-LED (12a) and a detection area of the biosensor (11) overlap each other, the biosensor (11) configured to detect the presence of a person; a control circuit (1a) configured to control the UVC-LED (12a) based on an output signal of the biosensor (11); and a light shielding cover (3b) configured to shield a part of the ultraviolet light emitted from the UVC-LED (12a). The control circuit (1a) is configured to drive and control the UVC-LED (12a) to stop emission of the ultraviolet light when the biosensor (11) has detected the presence of the person, and to emit the ultraviolet light again when a state has switched from a state where the biosensor (11) is detecting the presence of the person to a state where the biosensor (11) does not detect the presence of the person.