Patent ID: 7651256

Claim:
A ventilation/illumination system comprising: a ventilation device that blows air from an outdoor space to an indoor space or from the indoor space to the outdoor space; a light supplying device that supplies sunlight or artificial light in accordance with illumination of the sunlight including: a sunlight concentrator adapted to supply concentrated sunlight; and an artificial light generator adapted to supply artificial light; a ventilation/illumination duct that guides the air blown by the ventilation device to ventilate an indoor space through an inner surface thereof, and also to totally reflect the sunlight and/or artificial light supplied by the light supplying device to illuminate an indoor space by the inner surface thereof; and a cleaner arranged in the ventilation/illumination duct, the cleaner including a fan unit that discharges a contaminant from the ventilation/illumination duct to the outdoors, along with air, and a cleaning damper that opens or closes the end of the ventilation/illumination duct to clean the inner surface of the ventilation/illumination duct; and, a rotating mirror, arranged between the sunlight concentrator and the artificial light generator in the ventilation/illumination duct, and adapted to selectively reflect sunlight supplied by the sunlight concentrator and artificial light supplied by the artificial light generator by changing a reflection angle; wherein the sunlight concentrator and the artificial light generator are arranged in the ventilation/illumination duct.