CPC G10K 11/172 (2013.01) | 19 Claims |
1. A soundproof structure that includes a housing forming a space therein and having a through hole that allows the space to communicate with an outside, and generates Helmholtz resonance by the space and the through hole, the soundproof structure comprising:
a rear surface plate disposed at a position overlapping the through hole on the space side as viewed from a penetrating direction of the through hole, wherein
a diameter of the through hole is Φ and a distance from the rear surface plate to an opening surface of the through hole on the space side is d, d≤Φ is satisfied and d≤ 6 mm is satisfied,
a coefficient of an opening end correction in the through hole is 1.8 or more, and
the rear surface plate is disposed in the space.
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