JP-7857342-B2 - electronic equipment

JP7857342B2JP 7857342 B2JP7857342 B2JP 7857342B2JP-7857342-B2

Inventors

金沢正孝
橋倉誠
緑川雄斗

Assignees

ＮＥＣパーソナルコンピュータ株式会社

Dates

Publication Date: 20260512
Application Date: 20240531

Claims (4)

Electronic equipment having a flat housing, At least one fan, The substrate is positioned to receive the airflow discharged from the aforementioned fan and dissipate heat, and has through holes. In order to define the space that receives the airflow discharged from the fan, a first partition wall and a second partition wall are provided on the front and back of the substrate to close the space between it and the flat housing, It has, The first partition and the second partition are, A rigid material fixed to the surface of the substrate, An elastic material fixed to the rigid material and elastically compressed between it and the flat housing, It has, The rigid material in the second partition wall has a projection that penetrates the through hole, The electronic device is characterized in that the rigid material in the first partition wall has a fitting portion into which the projection fits.
In the electronic device described in claim 1, Two of the aforementioned fans are provided. The circuit board is provided between the two fans. The electronic device is characterized in that the first partition and the second partition are provided so as to extend between the two fans.
In the electronic device described in claim 1, An electronic device characterized in that the rigid material in the first partition wall is thicker than the rigid material in the second partition wall.
In the electronic device described in claim 1, An electronic device characterized in that the mating portion has a bottomed hole.

Description

This invention relates to an electronic device having a fan and a circuit board. Electronic devices such as notebook PCs are equipped with cooling modules to cool heat-generating components such as the CPU. These types of cooling modules include a heat transport device, such as a heat pipe, that absorbs and transports the heat generated by the CPU, and a heat sink and fan that expel the heat transported by the heat transport device to the outside of the enclosure. In the electronic device described in Patent Document 1, fans are provided on the left and right sides, with a circuit board on which the CPU is mounted placed between them. The fans are equipped with sponge partitions that restrict the direction of airflow. These partitions act to guide the airflow from the fans to exhaust vents at both the left and right rear ends. The fans may also be equipped with guides to ensure the partitions are properly positioned. Japanese Patent Publication No. 2022-117678 Figure 1 is a schematic plan view of an electronic device according to one embodiment, viewed from above.Figure 2 is a schematic plan view showing the internal structure of the enclosure.Figure 3 is a perspective view of the rear edge of the housing, seen from the bottom.Figure 4 is an enlarged cross-sectional view of a portion of the housing.Figure 5 is an exploded perspective view of the motherboard, first partition, and second partition.Figure 6 is a plan view of the portion of the motherboard that includes the first partition wall.Figure 7 is a schematic cross-sectional view of the motherboard, the first partition, and the second partition. The embodiments of the electronic device according to the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to these embodiments. Figure 1 is a schematic plan view of an electronic device 10 according to one embodiment, viewed from above. As shown in Figure 1, the electronic device 10 in this embodiment is a clamshell-type notebook PC. The electronic device 10 has a configuration in which a lid 11 and a housing 12 are connected by a hinge 14 so that they can rotate relative to each other. Although this embodiment illustrates a notebook PC as the electronic device 10, the electronic device may be other than a notebook PC, such as a tablet PC, smartphone, or portable game console. The lid 11 is a thin, flat, box-shaped enclosure. The lid 11 houses a display 16. The display 16 is, for example, an organic EL display or a liquid crystal display. The enclosure 12 is a thin, flat box. The keyboard device 18 and touchpad 19 face the top surface 12a of the enclosure 12. Hereinafter, the enclosure 12 and its mounted components will be described using the operator's posture when operating the keyboard device 18 as a reference. The width direction (left and right) of the enclosure 12 will be referred to as the X1 and X2 directions, the depth direction (front and back) as the Y1 and Y2 directions, and the thickness direction (top and bottom) as the Z1 and Z2 directions. The X1 and X2 directions may also be collectively referred to as the X direction, and similarly, the Y1 and Y2 directions and the Z1 and Z2 directions may be referred to as the Y direction and Z direction. These directions are defined for the convenience of explanation and may naturally change depending on the usage state or installation posture of the electronic device 10. The housing 12 can be composed of a plate-shaped member 20 forming the top surface 12a, a cover member 21 forming the bottom surface 12b, and vertical wall members 22 forming the four perimeter sides 12c. The plate-shaped member 20 has a large rectangular opening 20a where the keyboard device 18 is placed. The area around the opening 20a forms a bezel 20b surrounding the keyboard device 18. The cover member 21 is formed in a plate shape (see Figure 3). The vertical wall members 22 stand upright between the four perimeter edges of the plate-shaped member 20 and the four perimeter edges of the cover member 21, forming a frame shape overall. The hinge 14 is installed in a concave hinge mounting groove 12d formed on the rear edge of the housing 12, connecting the housing 12 and the lid 11. The hinge 14 has a structure in which, for example, a hinge shaft 14a, which serves as the axis of rotation, is supported at both ends in the longitudinal direction of the hinge housing 14b (see Figure 4). In this embodiment, the hinge 14 is configured in a so-called single-bar shape, with the hinge housing 14b extending along the longitudinal direction of the hinge mounting groove 12d. The hinge 14 rotates together with the lid 11 and descends diagonally backward (see Figure 4). The hinge 14 thus has a structure that increases the rotation angle of the lid 11, a so-called drop-down structure. The structure of the hinge 14 may be other than that described above. Figure 2 is a schematic plan view showing the internal structure of