An electronics unit includes a housing, the housing having a base portion with a post member extending from the base portion. The post member has a through-hole defined through the post member. A printed circuit board is connected to the housing at a plurality of connection points. The printed circuit board includes one or more electric or electronic components disposed thereon and has an aperture. The post member is disposed through the aperture of the printed circuit board. A distal end portion of the post member is larger than a diameter of the aperture so as to fix the printed circuit board to the housing, forming one of the connection points. A seal member is disposed at least partly within the through-hole of the post member and forms a seal with the post member.

According to certain embodiments, an electronic device comprises a housing including an opening facing an outside of the electronic device and a cavity spaced apart from the opening; a display disposed on the housing; an air vent disposed between the housing and the display and at least partially facing the opening; and a camera module disposed in the housing and at least partially facing the cavity, wherein the cavity, the air vent and the opening are configured to provide an air path.

A member of the present invention is to be placed to cover a ventilation hole in order to allow passage of gas between an outside and an inside of a housing through the ventilation hole of the housing and prevent dust and/or a liquid from entering the inside from the outside through the ventilation hole. The member of the present invention includes a porous membrane having air permeability in a thickness direction and a provisional protective film joined to the porous membrane to cover the porous membrane from the outside side. The provisional protective film is air-impermeable in a thickness direction or has lower air permeability in the thickness direction than the air permeability of the porous membrane. The provisional protective film and the porous membrane are joined to each other in such a manner that the provisional protective film is removable from the porous membrane.

An electronic device is provided. The electronic device includes a housing including an opening, a first cover disposed in the housing to close the opening and includes a first surface facing the outside and a second surface facing an internal space of the housing, at least one air vent formed from the first surface to the second surface in a region of the first cover to connect the outside of the electronic device to the internal space and includes a first space formed to have a specified depth in a direction starting from the first surface to the second surface, and a second space formed to have a specified depth in a direction starting from the second surface to the first surface, wherein the first space and the second space are connected, and a breathable waterproof member disposed to close the second space in the second surface.

An electronics unit includes a housing, the housing having a base portion with a post member extending from the base portion. The post member has a through-hole defined through the post member. A printed circuit board is connected to the housing at a plurality of connection points. The printed circuit board includes one or more electric or electronic components disposed thereon and has an aperture. The post member is disposed through the aperture of the printed circuit board. A distal end portion of the post member is larger than a diameter of the aperture so as to fix the printed circuit board to the housing, forming one of the connection points. A seal member is disposed at least partly within the through-hole of the post member and forms a seal with the post member.

An electronic device can include a housing defining an aperture, a membrane extending across the aperture, and a non-metallic woven support mesh disposed parallel to the flexible membrane and extending across the aperture. In at least one example, the membrane is acoustically transparent and the membrane is air permeable and water impermeable. In addition, the support mesh can be less flexible than the membrane such that the support mesh structurally supports the membrane.

A ventilation housing of the present disclosure includes: a housing; and a ventilation assembly. The housing includes a tubular projection extending to project from an outer surface and internally having a first space communicating the inside and the outside of the housing. The ventilation assembly includes: an internal member being a tubular body having an opening at a first end portion and an opening at a second end portion; a gas-permeable membrane covering the opening at the first end portion of the internal member; and an external member being a tubular body having a bottom, the external member being joined to the internal member with the internal member inserted in the interior of the external member from the first end portion side. The ventilation assembly is fixed to the projection with the projection inserted in the opening at the second end portion of the internal member to make an inner peripheral surface of the internal member and an outer peripheral surface of the projection abut each other. The ventilation assembly has a second space serving as a ventilation path connecting the gas-permeable membrane and the outside of the ventilation assembly in the inside of the internal member, the inside of the external member, and/or an interspace between the internal member and the external member joined together. A height H1 of the internal member is 6 to 10 mm. A ratio of the height H1 of the internal member to a height H2 of the projection is 1.00 to 1.70. The ventilation housing of the present disclosure exhibits excellent performance in terms of moisture permeation between the inside and the outside of the housing and is capable of reducing dropping of the ventilation assembly from the projection of the housing.

To make it possible to enhance waterproofness of a vent hole when an electronic controller is mounted on an automobile. The electronic controller includes a waterproof case that accommodates a printed circuit board with electronic parts mounted thereon, and a connector that electrically connects the printed circuit board and an external apparatus to each other, the electronic controller being mounted on the automobile in a posture having the connector directed downward. The waterproof case has an inclined surface that is smaller as the distance from a bottom surface is more on the connector side, and the inclined surface is formed with a vent hole that is closed with the breathing filter.

In some implementations, a desiccant assembly within a sensor housing may include a desiccant chamber configured to hold a desiccant element; a transfer window positioned between the desiccant chamber and a sensor chamber of the sensor housing; and a permeable membrane covering the transfer window and configured to allow water vapor to transfer from the sensor chamber to the desiccant chamber.

A porous polytetrafluoroethylene (PTFE) membrane of the present disclosure has a water vapor permeability, as measured according to Japanese Industrial Standard (JIS) L 1099 (method B-1), of 150000 g/(m.sup.2.Math.day) or more in a thickness direction of the membrane. The porous PTFE membrane of the present disclosure, when attached as a waterproof air-permeable membrane to a housing of an electrical component or electrical device, allows water vapor residing inside the housing to be quickly discharged out of the housing.