Soundproofing structure, opening structure, cylindrical structure, window member, and partition member

An opening structure comprising:

• a soundproofing structure;
• and
• an opening member which has an opening,
• wherein the soundproofing structure having:
• a soundproofing cell which includes a frame having a frame hole portion passing therethrough and at least one film that covers the frame hole portion and is fixed to the frame,
• wherein the film has a plurality of through-holes passing therethrough in a thickness direction,
• an average opening diameter of the through-holes is in a range of 0.1 μm to 250 μm, and
• a vertical direction of a film surface of the film is disposed so as to be inclined with respect to a direction of a sound source to be soundproofed,
• wherein the soundproofing structure is entirely disposed in the opening of the opening member such that a vertical direction of a film surface of the film intersects with a direction perpendicular to an opening cross section of the opening member, and
• a region serving as a vent hole through which gas passes is provided in the opening member.

A cylindrical structure comprising:

• a soundproofing structure;
• and
• a cylindrical member which has an opening,
• wherein the soundproofing structure having:
• a soundproofing cell which includes a frame having a frame hole portion passing therethrough and at least one film that covers the frame hole portion and is fixed to the frame,
• wherein the film has a plurality of through-holes passing therethrough in a thickness direction,
• an average opening diameter of the through-holes is in a range of 0.1 μm to 250 μm, and
• a vertical direction of a film surface of the film is disposed so as to be inclined with respect to a direction of a sound source to be soundproofed,
• wherein the soundproofing structure is entirely disposed in the opening of the cylindrical member such that a vertical direction of a film surface of the film intersects with a direction perpendicular to an opening cross section of the cylindrical member, and
• a region serving as a vent hole through which gas passes is provided in the cylindrical member.