Embodiments of this application provide a rear cover of an electronic device, an electronic device, and an air tightness detection system of an electronic device. The electronic device may include a mobile or fixed terminal having waterproof performance such as a mobile phone, a tablet computer, or a notebook computer. The rear cover includes a body portion and a structure layer fixed to a rear surface of the body portion. A smooth detection plane is formed on a rear surface of the structure layer, and a rear end of a balance channel of the rear cover is located within the detection plane, thereby resolving the problem that the material of the rear cover affects air tightness detection on the electronic device.

A portable electronic device can include a housing at least partially defining an internal volume. The device can include a venting module including a membrane, a porous member, and a support structure. The membrane and porous member can define a fluid path extending a width of the porous member and placing the internal volume in fluid communication with an ambient environment adjacent the housing. The support structure can be coupled to the porous member.

A venting apparatus is disclosed herein. The venting apparatus comprises a substrate, such as a metal substrate or a specialty plastic substrate, having an opening therein and a fluoropolymer membrane, such as ePTFE, disposed over said opening and thermally bonded using a thermoplastic material to said substrate. This allows the fluoropolymer membrane to be directly bonded to the said substrate without using an adhesive layer.

The present invention proposes a protective case for a motor vehicle computer, the case including a ventilation filter (50) and at least one wall (41) including a mounting portion (410) for mounting the ventilation filter, in which portion an opening (42) and at least one air flow channel (43) extending from the opening are formed, the ventilation filter including a membrane (51) covering the opening and a protective member (52) for protecting the membrane, mounted on the mounting portion and defining at least one aperture opening onto the flow channel (43), the flow channel being configured so as to prevent the membrane from being reached by a flow of water traveling along a straight path from the aperture, in order to prevent damage to the membrane by the flow of water.

There is disclosed a mobile terminal comprising a terminal body comprising a terminal body comprising a plurality of cases forming an external appearance of the mobile terminal; a waterproof member configured to prevent liquid from entering the mobile terminal between at least two of the plurality of cases; an air vent hole configured to allow air to pass between an interior and an exterior of the mobile terminal; a waterproof mesh disposed at the air vent hole and configured to allow air but not liquid to pass through the air vent hole; an antenna module provided in the plurality of cases and comprising an antenna radiator and a wireless integrated circuit; and a heat radiation unit having a first end adjacent to the antenna module and a second end adjacent to the air vent hole to allow heat from the antenna module to escape via the air vent hole.

A housing comprises a first housing with a first through-hole, a second housing with a second through-hole, a decoration part with a third through-hole, and a first breathable film. The first housing is disposed outside the second housing, and the decoration part is disposed on the first housing and covers the first through-hole. An orthographic projection of the third through-hole on the second housing is located outside an orthographic projection of the second through-hole on the second housing. A first gap exists between the decoration part and the second housing and is communicated with both the second through-hole and the third through-hole. The first breathable film is disposed on the second housing and covers the second through-hole.

A ventilator waterproofing structure applicable to an electronic component unit of a wire harness includes a projected columnar portion that is formed in a columnar shape and that is projected from a wall body of a casing in a first direction, a notch that is formed on the projected columnar portion in a straight line in a second direction, a step portion provided in the notch on a closed end side, and a closed space surrounded by an inner wall surface of the notch and a step surface of the step portion. A ventilation passage provided with a waterproof ventilation filter has an outside opening that is opened toward a closed space in a third direction in the notch.

A pressure compensation label for sticking to a surface, provided with a pressure compensation opening, of a housing or some other article, has a first film for sticking to a surface provided with a pressure compensation opening, and an outer, second film and also an air-permeable membrane film which is arranged between the first film and the second film. The first film has a cutout, intended for positioning over a pressure compensation opening, and a number of ventilation ducts. Each of the ventilation ducts is separated from the cutout by a film region of the first film. The membrane film covers the cutout and each of the film regions between the cutout and the number of ventilation ducts. The outer, second film extends laterally beyond the membrane film, at least regionally covers the number of ventilation ducts of the first film laterally outside the membrane film, and spans a ventilation path which leads from that surface of the membrane film that faces the second film to the number of ventilation ducts in the first film.

An enclosure for housing electronics, including a housing portion defining an inner volume, an aperture formed through the housing portion, and a water selective membrane operationally connected to the aperture and positioned to selectively pass water molecules from the inner volume to an oppositely disposed exterior environment to maintain dried air within the inner volume. The enclosure of may further include an electronics package disposed within the inner volume, a Joule heater disposed within the inner volume, a pump operationally connected to the inner volume to urge water molecules across the membrane, a sensor operationally connected to the inner volume, and/or a microprocessor operationally connected to the sensor, to the pump, and/or to the Joule heater.

An electronic device that has components is provided with a housing that defines an exterior and an interior of the electronic device. The housing includes a vapor port that prevents ingress of liquid through the vapor port from the exterior of the electronic device to the interior of the electronic device. The vapor port also permits egress of vapor through the vapor port from the interior of the electronic device to the exterior of the electronic device. The vapor port may include a breathable, but water-resistant or waterproof barrier to prevent water from entering through the barrier while enabling water vapor to exit through the barrier and, thus, the vapor port.