Waterproof sound-transmitting member and electronic device provided therewith

An electronic device comprising:

• a sound conversion part configured to convert between an electric signal and sound and having a sound-transmitting port;
• a housing in which the sound conversion part is housed, the housing having an opening located between the sound conversion part and an outside;
• and
• a waterproof sound-transmitting membrane placed inside the housing so as to cover the opening and configured to prevent entry of water while permitting sound to pass therethrough via the opening, wherein
• the waterproof sound-transmitting membrane has an air permeability of 10,000 seconds/100 mL or more as expressed by Gurley number,
• a support layer is joined to a main surface of the waterproof sound-transmitting membrane that is opposite to a main surface at the opening side of the waterproof sound-transmitting membrane,
• the support layer includes a resin foam material,
• the support layer has a through hole extending in a thickness direction thereof and serving as a path for sound transmitted through the waterproof sound-transmitting membrane,
• the support layer is placed, in a state of being compressed in the thickness direction thereof, between the housing and the sound conversion part such that the through hole and the waterproof sound-transmitting membrane cover the sound-transmitting port, and
• a side air permeability of the support layer between the through hole and an outer peripheral side surface of the support layer is 0.1 mL/(min·mm3) or more as a value per unit volume of the support layer.