Abstract: An air exchange device improves the covering effect and the overall visual effect on the appearance of the air exchange device along with a divider where the air exchange device is mounted. The air exchange device includes an air-guiding tube and a covering member. The air-guiding tube has a first maximal outer diameter, and includes a first end and a second end. The covering member includes a positioning portion that is adapted to be coupled to an outer wall of the air-guiding tube, and a covering portion connected to the positioning portion. The covering portion has a second maximal outer diameter larger than the first maximal outer diameter of the air-guiding tube.

Abstract: The present disclosure provides an air exchange device for improving the covering effect and the overall visual effect on the appearance of the air exchange device along with a divider where the air exchange device is mounted. The air exchange device includes an air-guiding tube and a covering member. The air-guiding tube has a first maximal outer diameter, and includes a first end and a second end. The covering member includes a positioning portion that is adapted to be coupled to an outer wall of the air-guiding tube, and a covering portion connected to the positioning portion. The covering portion has a second maximal outer diameter larger than the first maximal outer diameter of the air-guiding tube.

Abstract: The present invention discloses an electrical connecting module for a jacket of a handheld electronic device, in which the electrical connecting module can be integrated with another component to form a single electrical connecting assembly for powering the jacket while allowing data transmission or charging operation of the handheld electronic device. The electrical connecting module for the jacket of the handheld electronic device includes a body and a conducting wire. The body includes a retaining hole and a plurality of electrical contacts. The retaining hole is adapted for partially receiving a connecting plug of a transmission line. The plurality of electrical contacts is located at an end of the body. The conducting wire is electrically connected to the plurality of electrical contacts. The present invention further discloses an electrical connecting assembly.