| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a safe, inexpensive, and lightweight room air cleaner for eliminating the defects, such as danger, high price, and heavy load, of a high-pressure plasma radiation type air cleaner. SOLUTION: 100 V AC for domestic use is impressed to a semiconductor plate 2 having a large area, or the like, without increasing the voltage to generate weak minus charge on the outer layer part, and the charge is brought into contact with room air.</p> |
