- 49 - ABSTRACT FINE PARTICLE DIFFUSION DEVICEA micro-particle diffusing device is provided with first discharge openings (10a-10c) for discharging first airflows to the upper part of an indoor living space, a second discharge opening (10d) provided below the first discharge openings (10a-10c) and discharging a second airflow to below the first airflows, and a micro-particle generating device (17) for generating micro-particles. The micro-particles generated by the micro-particle generating device (17) are discharged indoors, and the concentration of micro-particles discharged from the first discharge openings (10a-10c) is set lower than the concentration of micro-particles discharged from the second discharge opening (10d).Figure 8
