Patent ID: 9120059
Filing Date: 2015-09-01
Classification: B01D,B60R,H05K

Abstract:
1. A ventilation structure comprising a ventilation unit and a housing, the ventilation unit comprising: a ventilation member that is attached to an opening of the housing, the ventilation member comprising a water-proof gas-permeable membrane that covers the opening; a sealing member that seals a gap between the housing and the ventilation member; and an annular partition wall member defining an inner space in which the ventilation member is fitted, the partition wall member being kept in contact with the housing, wherein the ventilation member comprises: a support supporting the water-proof gas-permeable membrane and having an inner gas channel configured to allow the water-proof gas-permeable membrane to communicate with an internal space of the housing; and a cover component covering the water-proof gas-permeable membrane and forming an outer gas channel opening radially outwardly between the cover component and the water-proof gas-permeable membrane and between the cover component and the support, the partition wall member comprises a main body portion held by the support radially from inside, the main body portion being in contact with the housing and allowing at least a portion of an opening of the outer gas channel to be exposed outwardly, and the partition wall member comprises a jutting portion jutting from the main body portion radially inwardly, the jutting portion being sandwiched between the housing and the ventilation member.