Electronic device

Abstract

An electronic device includes a housing having a first main surface, a second main surface on an opposite side of the first main surface, and a side surface connecting the first main surface and the second main surface; a fan disposed inside the housing; an air supply passage disposed inside the housing and through which air supplied from the fan passes; and a fin disposed in the air supply passage. The air supply passage extends from the fan toward the side surface. The housing has a recess at a position overlapping the air supply passage in plan view, the recess being recessed from the second main surface toward the first main surface and extending toward the side surface. The recess has a recessed surface facing the first main surface and a recessed side surface located in the vicinity of the fin in the extending direction of the air supply passage compared to the side surface and connecting the second main surface and the recessed surface. The side surface has a first air outlet through which a portion of the air supplied from the fan is discharged. The recessed side surface has a second air outlet through which another portion of the air supplied from the fan is discharged.

Description

Technical Field

[0001] This disclosure relates to an electronic device. Background Technology

[0002] An electronic device is known to have a housing that houses a blower and has an exhaust port for discharging air from the blower to the outside.

[0003] For example, the electronic device described in Patent Document 1 includes a housing that houses a fan unit. The housing includes a vent for taking in external gas, a first exhaust port that opens in the air supply path, and a second exhaust port that opens at a location different from the air supply path.

[0004] In the electronic device of Patent Document 1, heat generated from internal electronic components is absorbed by heat pipes and heat sinks, and air is sent to the heat sinks by a fan unit, thereby dissipating the heat inside the electronic device to the outside.

[0005] Prior art literature

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2015-53330 Summary of the Invention

[0008] The electronic device described in Patent Document 1 has room for improvement in terms of heat dissipation performance and miniaturization.

[0009] Therefore, this disclosure provides an electronic device with improved heat dissipation performance and miniaturization.

[0010] One aspect of this disclosure relates to an electronic device that includes:

[0011] A frame having a first main surface, a second main surface opposite to the first main surface, and a side surface connecting the first main surface and the second main surface;

[0012] A fan, which is disposed inside the frame;

[0013] An air supply passage, disposed inside the frame, through which air delivered from the fan passes; and

[0014] Fins, which are disposed in the air supply passage,

[0015] The air supply passage extends from the fan toward the side.

[0016] The frame has a recess at the location where it overlaps with the air supply passage when viewed from above. The recess is recessed from the second main surface toward the first main surface and extends toward the side surface.

[0017] The recess has: a concave surface facing the first main surface; and a concave side surface located near the fin in the extending direction of the air supply passage compared to the side surface, and connecting the second main surface and the concave surface.

[0018] The side has a first exhaust port for discharging a portion of the air delivered from the fan.

[0019] The concave side has a second exhaust port for discharging another portion of the air delivered from the fan.

[0020] According to this disclosure, it is possible to provide electronic devices with improved heat dissipation performance and miniaturization. Attached Figure Description

[0021] Figure 1 This is a perspective view showing the appearance of the electronic device according to Embodiment 1.

[0022] Figure 2 It is Figure 1 A schematic diagram of an electronic device used as a laptop PC.

[0023] Figure 3 Observing from another direction Figure 1 A 3D view of an electronic device.

[0024] Figure 4 It is Figure 3 An enlarged image of a portion of an electronic device.

[0025] Figure 5 yes Figure 4 A sectional perspective view of an electronic device.

[0026] Figure 6 yes Figure 4 A cross-sectional view of the electronic device.

[0027] Figure 7 This is an exploded perspective view showing a portion of an electronic device according to a variation of Embodiment 1.

[0028] Figure 8 It is shown Figure 7 A sectional perspective view of a part of an electronic device. Detailed Implementation

[0029] (The process of completing this invention)

[0030] Previously, it was known that the following structure existed: In order to reduce the temperature of the heat-generating components inside the electronic device, a fan was installed inside the electronic device, and the heat inside was dissipated to the outside of the electronic device by airflow from the fan.

[0031] For example, Patent Document 1 discloses an electronic device in which heat is dissipated by airflow from a fan unit relative to a heat sink that absorbs heat from a heat-generating component. The airflow from the fan unit is discharged to the outside of the electronic device from a first exhaust port.

[0032] To ensure heat dissipation performance, it is advisable to provide an exhaust vent on the side of the electronic device's frame, with an opening the same size as the heat sink. On the other hand, if an exhaust vent with the same thickness as the heat sink is provided, it becomes difficult to reduce the thickness of the electronic device, hindering product miniaturization.

[0033] Therefore, the inventors have studied electronic devices that improve heat dissipation performance and achieve miniaturization, and thus completed the following invention.

[0034] An electronic device according to one embodiment of this disclosure includes:

[0035] A frame having a first main surface, a second main surface opposite to the first main surface, and a side surface connecting the first main surface and the second main surface;

[0036] A fan, which is disposed inside the frame; and

[0037] Fins, which are disposed inside the frame and form the air supply passage from the fan.

[0038] The air supply passage is formed to extend from the fan toward the side.

[0039] The frame has a recess at the position where it overlaps with the air supply passage when viewed from above. This recess extends from the second main surface toward the first main surface and toward the side surface.

[0040] The recess has: a concave surface facing the first main surface; and a concave lateral surface located near the fin in the extending direction of the air supply passage compared to the lateral surface, and connecting the second main surface and the concave surface.

[0041] A first exhaust port is formed on the side for air to be discharged from the fan.

[0042] A second exhaust port is formed on the concave side for discharging air from the fan.

[0043] This structure enables the provision of electronic devices with improved heat dissipation and smaller size.

[0044] Alternatively, in the thickness direction of the frame, the size of the first exhaust port is larger than the size of the second exhaust port.

[0045] This structure allows for the rapid expulsion of hot air that has cooled the fins.

[0046] Alternatively, the second exhaust port may extend from the concave side to the second main surface to open.

[0047] This structure allows hot air that has cooled the fins to be exhausted in two directions, thus improving heat dissipation performance.

[0048] Alternatively, the concave surface can be formed as a flat surface.

[0049] This structure allows for the miniaturization of at least a portion of the end of the electronic device, thus contributing to miniaturization.

[0050] Alternatively, the antenna may be arranged inside the frame along the concave surface.

[0051] This structure allows the antenna to dissipate heat from the air cooling the fins, further improving heat dissipation performance.

[0052] Alternatively, the concave surface may face the side surface and be inclined toward the first main surface.

[0053] With this structure, the air passage toward the first exhaust port gradually narrows, thus increasing the flow rate and improving heat dissipation performance.

[0054] Alternatively, the fins may be arranged adjacent to the second exhaust port.

[0055] This structure allows the air cooled by the fins to be directly exhausted to the outside of the electronic device, thus improving heat dissipation performance.

[0056] Alternatively, the first exhaust port may be formed by multiple first through holes.

[0057] The second exhaust port is formed by a plurality of second through holes.

[0058] This structure allows the first and second exhaust ports to be configured as an assembly of multiple small through holes. Therefore, it prevents foreign objects from entering the electronic equipment.

[0059] Alternatively, the size of the first through hole may be larger than the size of the second through hole.

[0060] With this structure, by reducing the size of the second through hole near the fins, the airflow rate from the second exhaust port can be increased, thereby improving heat dissipation performance.

[0061] Alternatively, the first main surface may also have a display section.

[0062] This structure enables the provision of miniaturized tablet terminals with improved heat dissipation performance.

[0063] The embodiments will now be described with reference to the accompanying drawings.

[0064] (Implementation Method 1)

[0065] [Overall Structure]

[0066] Figure 1 This is a perspective view showing the appearance of the electronic device 1 according to Embodiment 1. Figure 2 It is Figure 1 This is a schematic diagram of the electronic device 1 when used as a laptop PC. It should be noted that the XYZ coordinate system shown in the figure is for ease of understanding of the implementation method and is not intended to limit the implementation method. In the XYZ coordinate system, the X-axis direction is the width direction of the electronic device, the Y-axis direction is the thickness direction, and the Z-axis direction is the depth direction.

[0067] like Figure 1 As shown, electronic device 1 is a flat-panel terminal with a display unit 10. Figure 2 As shown, if the electronic device 1 is connected to the keyboard section 2 which has input devices such as keyboard 201 and touchpad 202, the electronic device 1 can also be used as a laptop PC.

[0068] Figure 3 Observing from another direction Figure 1 A three-dimensional view of electronic device 1. Figure 4 It is Figure 3 An enlarged image of a portion of electronic device 1. Figure 5 yes Figure 4 A sectional perspective view of electronic device 1. Figure 6 yes Figure 4 A cross-sectional view of electronic device 1 (AA).

[0069] like Figures 3-5 As shown, the electronic device 1 includes a frame 14, a fan 15, and fins 16. The fan 15 and fins 16 are disposed inside the frame 14.

[0070] <Frame>

[0071] like Figure 1 and Figure 3 As shown, the frame 14 has a first main surface 11, a second main surface 12, and a side surface 13 connecting the first main surface 11 and the second main surface 12. The electronic device 1 has a display unit 10 on the first main surface 11. The second main surface 12 is the side opposite to the first main surface 11. The electronic device 1 has, for example, a camera 17 and a battery pack 18 on the second main surface 12. In addition, an air intake 19 for drawing in external air through a fan 15 is formed on the second main surface 12.

[0072] like Figure 3 and Figure 4 As shown, a recess 20 is provided in the frame 14. The recess 20 is recessed from the second main surface 12 toward the first main surface 11 and extends toward the side surface 13. In top view, i.e., when viewed from the Y direction, the recess 20 is formed at a position overlapping with the air supply passage. The air supply passage is the flow path from the fan 15 to the outside of the frame 14, along... Figure 3 The direction of arrow B shown extends. The air supply passages include air supply passage B1 from fan 15 to the first exhaust port 23, and air supply passage B2 from fan 15 to the second exhaust port 24 (see reference). Figure 6 Additionally, the recess 20 has a concave surface 21 facing the first main surface 11, and a concave side surface 22 connecting the second main surface 12 and the concave surface 21. Furthermore, the concave side surface 22 is located near the fin 16 in the extending direction B of the air supply passage compared to the side surface 13.

[0073] By forming the recess 20, the thickness of the recess 20 portion of the frame 14 is smaller than that of the other portions. Therefore, forming the recess 20 contributes to the miniaturization of the electronic device 1.

[0074] In addition, in this embodiment, the concave surface 21 is formed to be flat.

[0075] A first exhaust port 23 is formed on the side 13. The first exhaust port 23 is for air supply passage B1 (see reference). Figure 6 The first exhaust port 23 is formed by a plurality of first through holes 23a. Additionally, a second exhaust port 24 is formed on the concave side 22. The second exhaust port 24 is for air to be discharged through the air supply passage B2 (see reference). Figure 6 The first exhaust port 23 and the second exhaust port 24 are outlets for air discharged from the fan 15. The second exhaust port 24 is formed by a plurality of second through holes 24a. Air from the fan 15 is discharged from both the first exhaust port 23 and the second exhaust port 24. That is, the first exhaust port 23 and the second exhaust port 24 are outlets for air supplied from the fan 15. More specifically, as... Figure 6 As shown, the first exhaust port 23 is an outlet for discharging a portion of the air supplied from the fan 15, and the second exhaust port 24 is an outlet for discharging the remaining portion of the air supplied from the fan 15. The heat absorbed by the fins 16 is cooled by the air from the fan 15, and the air, now at a high temperature due to the cooling of the fins 16, is discharged from the first exhaust port 23 and the second exhaust port 24.

[0076] A first exhaust port 23 and a second exhaust port 24 are formed through multiple first through holes 23a and multiple second through holes 24a, respectively, thereby preventing foreign objects from entering the interior of the frame 14 of the electronic device 1. In addition, by changing the size of the first through holes 23a and the second through holes 24a, the size of the air outlet to the outside of the frame 14 can be changed, and the flow rate of the discharged air can be controlled.

[0077] In the thickness direction of the frame 14, i.e., the Y direction, the size H1 of the first exhaust port 23 is larger than the size H2 of the second exhaust port 24 (refer to...). Figure 5 Here, the size H1 of the first exhaust port 23 and the size H2 of the second exhaust port 24 refer to the size of the opening in the Y direction. By reducing the size H2 of the second exhaust port 24, a pressure difference is generated before and after passing through the second exhaust port 24, which increases the flow velocity of the air discharged from the second exhaust port 24. Therefore, the flow velocity of the air discharged from the second exhaust port 24 is greater than that of the air discharged from the first exhaust port 23. As will be described later, air that has been cooled to a high temperature by the exhaust from the first exhaust port 23 and the second exhaust port 24 is discharged. By reducing the size H2 of the second exhaust port 24, the flow velocity of the air discharged from the second exhaust port 24 can be increased, thus enabling the rapid discharge of high-temperature air.

[0078] Furthermore, in this embodiment, the size W1 of the first through hole 23a is larger than the size W2 of the second through hole 24a. Here, the sizes W1 of the first through hole 23a and W2 of the second through hole 24a are the sizes of the openings in the X direction. By changing the size in the X direction in addition to the size in the Y direction, the airflow velocity can be controlled.

[0079] <Fan>

[0080] like Figure 5 As shown, the fan 15 is disposed inside the frame 14 at a position overlapping with the air intake 19. The fan 15 draws in air from outside the frame 14 through the air intake 19 and delivers the air toward the first exhaust port 23 and the second exhaust port 24. The air from the fan 15 cools the fins 16. For example, a Sirocco fan can be used as the fan 15.

[0081] In this embodiment, two exhaust ports are formed: a first exhaust port 23 and a second exhaust port 24. Therefore, as... Figure 6 As shown, the air supply path B from fan 15 (refer to...) Figure 3The interior of the frame 14 is divided into an air supply passage B1 facing the first exhaust port 23 and an air supply passage B2 facing the second exhaust port. Air from the fan 15 is discharged to the outside of the frame 14 through the air supply passages B1 and B2 from the first exhaust port 23 and the second exhaust port 24. The air supply passages B1 and B2 are formed to extend from the fan 15 in the -Z direction. That is, the air supply passages B1 and B2 are formed to extend from the fan 15 towards the side 13.

[0082] <Fin>

[0083] The fins 16 are disposed in the air supply passage B from the fan 15. With the fins 16 disposed in the air supply passage B, the air from the fan 15 cools the fins 16 and is discharged from the first exhaust port 23 and the second exhaust port 24 through the air supply passages B1 and B2.

[0084] Fin 16 is connected to heat pipes (not shown) disposed within the housing 14. Heat generated in the CPU (not shown) within the housing 14 is transferred to the fin 16 via the heat pipes. The fin 16 is cooled by air from the fan 15. The air that has cooled the fin 16 is exhausted from the housing 14 through the first exhaust port 23 and the second exhaust port 24, thereby cooling the CPU. In this way, the electronic device 1 is prevented from becoming overheated.

[0085] In this embodiment, the fins 16 and the second exhaust port 24 are arranged adjacent to each other. By placing the fins 16 adjacent to the second exhaust port 24, the air whose temperature has increased due to cooling the fins 16 can be rapidly exhausted to the outside. By rapidly exhausting the hot air from the second exhaust port 24, the retention of hot air inside the housing 14 can be prevented. Therefore, the heat dissipation performance of the electronic device 1 can be improved.

[0086] <Heat dissipation>

[0087] Reference Figure 5 and Figure 6 The heat dissipation of electronic device 1 will be explained. Fan 15 rotates about its rotation axis in the Y direction. As fan 15 rotates, air from outside the housing 14 is drawn into the housing 14 through air intake 19. The drawn-in air is then discharged to the outside of the housing 14 through air supply passages B1 and B2 via fan 15, exiting through first exhaust port 23 and second exhaust port 24. Fins 16 are arranged in air supply passages B1 and B2, thus the air discharged from fan 15 cools the fins 16. The air, now hot from cooling the fins 16, is discharged through first exhaust port 23 and second exhaust port 24, thereby dissipating heat from electronic device 1.

[0088] In this embodiment, two exhaust ports, a first exhaust port 23 and a second exhaust port 24, are formed, so the air from the fan 15 is divided into air supply passage B1 and air supply passage B2 and flows accordingly. Air supply passage B1 is the air supply passage from the fan 15 through the fins 16 to the first exhaust port 23. Air supply passage B2 is the air supply passage from the fan 15 through the fins 16 to the second exhaust port 24.

[0089] In this embodiment, a duct 25 is formed in the air supply passage B1 between the fin 16 and the first exhaust port 23. On the other hand, no duct is formed in the air supply passage B2 between the fin 16 and the second exhaust port 24. By arranging the second exhaust port 24 adjacent to the fin 16, air that has become hot due to cooling the fin 16 can be rapidly exhausted from the second exhaust port 24. Therefore, the heat dissipation performance of the electronic device 1 can be improved.

[0090] Typically, to ensure heat dissipation performance, it is desirable that the size of the exhaust ports 23 and 24 in the thickness direction (Y direction) of the electronic device 1 is the same as the size of the fins 16 in the Y direction. This is because it allows for efficient exhaust of air that has cooled the fins 16. As in this embodiment, by providing two exhaust ports 23 and 24, the size of each exhaust port 23 and 24 in the Y direction can be made smaller than the size of the fins 16 in the Y direction. As a result, a portion of the frame 14 can be formed thinner, enabling miniaturization of the electronic device 1.

[0091] In this embodiment, the size H1 of the first exhaust port 23 in the Y direction is larger than the size H2 of the second exhaust port 24 in the Y direction. Therefore, the air flow rate from the smaller second exhaust port 24 is faster, and the high-temperature air passing through the fins 16 can be discharged to the outside of the frame 14 at a faster flow rate than the air discharged from the first exhaust port 23.

[0092] Furthermore, in this embodiment, the second exhaust port 24 extends from the concave side surface 22 to the second main surface 12 to form an opening. In this way, by extending from the concave side surface 22 to the second main surface 12 through the opening, air can be discharged more efficiently, thereby improving heat dissipation efficiency.

[0093] [Effect]

[0094] According to the above-described embodiments, it is possible to provide electronic devices with improved heat dissipation performance and smaller size.

[0095] By providing two exhaust ports, the first exhaust port 23 and the second exhaust port 24, air from the fan 15 can be discharged through the air supply passages B1 and B2. Since the second exhaust port 24 is located close to the fins 16, it can quickly discharge the high-temperature air that has cooled the fins 16, thereby improving heat dissipation performance.

[0096] In the thickness direction of the frame 14, the size of the first exhaust port 23 is larger than that of the second exhaust port 24, thus the air velocity discharged from the second exhaust port 24 is faster. Therefore, the air that has become hot due to cooling the fins 16 is discharged from the second exhaust port 24 at a fast velocity, which can improve heat dissipation performance.

[0097] Furthermore, by forming a recess 20 on the second main surface 12 of the frame 14, the thickness of a portion of the frame 14 can be reduced. Therefore, the electronic device 1 can be miniaturized.

[0098] Furthermore, by forming the recess 20, a narrow flow path is created from the fins 16 inside the frame 14 to the first exhaust port 23, thereby increasing the airflow velocity from the fan 15. Therefore, high-temperature air can also be efficiently exhausted from the first exhaust port 23.

[0099] In addition, since the second exhaust port 24 opens from the concave side 22 to the second main surface 12, it can efficiently exhaust the air that has become hot due to cooling the fins 16, thereby improving the heat dissipation performance of the electronic device 1.

[0100] Furthermore, the concave surface 21 of the recess 20 is formed to be flat, so when the second main surface 12 is facing downwards and the electronic device 1 is placed on a table or the ground, the portion formed by the recess 20 becomes a flow path for the air discharged from the second exhaust port 24. In this way, even when the second main surface 12 is facing downwards and the device is placed on a table or the ground, air from the fan 15 can be discharged efficiently, thus improving heat dissipation performance.

[0101] It should be noted that in the above embodiment, an example was described where the size of the first exhaust port 23 in the thickness direction of the frame 14 is larger than the size of the second exhaust port 24. However, the size of the first exhaust port 23 does not necessarily have to be larger than the size of the second exhaust port 24. For example, the sizes of the first exhaust port 23 and the second exhaust port 24 can be the same. Alternatively, the size of the second exhaust port 24 can be larger than the size of the first exhaust port 23.

[0102] Furthermore, in the above embodiment, an example of the second exhaust port 24 opening from the concave side surface 22 to the second main surface 12 was described, but it is sufficient as long as the second exhaust port 24 opens at least on the concave side surface 22.

[0103] Furthermore, in the above embodiment, an example of the concave surface 21 being formed as a flat surface was described, but the concave surface 21 may not be flat. For example, the concave surface 21 may be formed as a curved surface, or it may have a concave portion or a convex portion.

[0104] Furthermore, in the above embodiment, an example of fin 16 being arranged adjacent to the second exhaust port 24 was described, but the position of fin 16 is not limited to this. As long as fin 16 is arranged such that the second exhaust port 24 is closer to fin 16 than the first exhaust port 23, it is acceptable.

[0105] Furthermore, in the above embodiments, an example was described where the first exhaust port 23 is formed by a plurality of first through holes 23a and the second exhaust port 24 is formed by a plurality of second through holes 24a, but this is not a limitation. Either the first exhaust port 23 or the second exhaust port 24 may be formed by a plurality of through holes. Alternatively, both exhaust ports 23 and 24 may be formed by a single through hole.

[0106] Furthermore, in the above embodiment, an example of an electronic device 1 being a tablet-type terminal having a display unit 10 has been described, but the electronic device 1 is not limited to a tablet-type terminal. For example, the electronic device 1 may also be a laptop PC or a desktop PC, etc.

[0107] [Variation Example 1]

[0108] Figure 7 This is an exploded perspective view showing a portion of the electronic device 1A according to a variation of Embodiment 1. Figure 8 It is shown Figure 7 A sectional perspective view of a portion of electronic device 1A.

[0109] like Figure 7 and Figure 8 As shown, in electronic device 1A, an antenna 26 is disposed along a concave surface 21 inside a housing 14. Specifically, a resin component 27 for mounting the antenna 26 is disposed along the concave surface 21 inside the housing 14. The antenna 26 is formed, for example, by plating the resin component 27.

[0110] Antenna 26 connects to a wireless communication module (not shown) and transmits and receives radio waves from the outside, connecting electronic device 1 to a network using functions such as wireless LAN or wireless WAN. Antenna 26 is made of a material with high thermal conductivity, such as metal. Therefore, by arranging antenna 26 along the concave surface 21, heat from the air flowing towards the first exhaust port 23 can be radiated through antenna 26. This improves the heat dissipation performance of electronic device 1A. Furthermore, by arranging antenna 26 along the concave surface 21 inside the frame 14, performance degradation of antenna 26 can be suppressed. For example, when the second main surface 12 of the frame 14 is facing downwards and electronic device 1 is placed on a table, floor, etc., a space can be formed between antenna 26 and the table or floor. This suppresses interference of radio waves transmitted and received through antenna 26, thus suppressing performance degradation of antenna 26. For example, if the table or floor contains metal, performance degradation of antenna 26 can be further suppressed.

[0111] Alternatively, the concave surface 21 can also be tilted toward the side surface 13 toward the first main surface 11. By forming the concave surface in this way, the orientation of the antenna 26 can be tilted relative to the second main surface 12. Thus, for example, even if a shield is provided on the side of the second main surface 12 of the housing 14, the reduction in the radiation characteristics, reception characteristics, and / or directivity of the antenna 26 can be suppressed.

[0112] The distance D1 between the first exhaust port 23 and the second exhaust port 24 in the Z direction should preferably be 10mm or more. When the distance D1 between the first exhaust port 23 and the second exhaust port 24 is within this range, it is possible to balance the improvement of the characteristics of the antenna 26 and the improvement of the heat dissipation performance of the electronic device 1A.

[0113] Furthermore, when the electronic device 1A is placed on a metal table or floor with the second main surface 12 facing downwards, the presence of the recess 20 prevents the characteristics of the antenna 26 from being degraded.

[0114] Industrial availability

[0115] This disclosure is widely applicable to electronic devices that utilize fans and fins for heat dissipation.

[0116] Explanation of reference numerals in the attached figures:

[0117] 1. 1A electronic equipment

[0118] 10 Display Units

[0119] 11 First Main Page

[0120] 12 Second Main Face

[0121] 13 side views

[0122] 14 frames

[0123] 15 fans

[0124] 16 fins

[0125] 20 recesses

[0126] 21 concave surface

[0127] 22 concave side

[0128] 23 First exhaust port

[0129] 23a First Through Hole

[0130] 24 Second exhaust port

[0131] 24a Second Through Hole

[0132] 26 antennas.

Claims

1. An electronic device, wherein, The electronic device includes: A frame having a first main surface, a second main surface opposite to the first main surface, and a side surface connecting the first main surface and the second main surface; A fan, which is disposed inside the frame; An air supply passage, disposed inside the frame, through which air delivered from the fan passes; and Fins, which are disposed in the air supply passage, The air supply passage extends from the fan toward the side. The frame has a recess at the location where it overlaps with the air supply passage when viewed from above. The recess is recessed from the second main surface toward the first main surface and extends toward the side surface. The recess has: The concave surface is opposite to the first main surface; as well as The concave side, located near the fin in the direction of extension of the air supply passage, connects the second main surface and the concave side. The side has a first exhaust port for discharging a portion of the air delivered from the fan. The concave side has a second exhaust port for discharging another portion of the air delivered from the fan. An antenna is also provided inside the frame, arranged along the concave surface.

2. The electronic device according to claim 1, wherein, In the thickness direction of the frame, the size of the first exhaust port is larger than the size of the second exhaust port.

3. The electronic device according to claim 1 or 2, wherein, The second exhaust port extends from the concave side to the second main surface and opens.

4. The electronic device according to claim 1 or 2, wherein, The concave surface is formed to be flat.

5. The electronic device according to claim 1, wherein, The concave surface faces the side surface and is inclined toward the first main surface.

6. The electronic device according to claim 1 or 2, wherein, The fins are arranged adjacent to the second exhaust port.

7. The electronic device according to claim 1 or 2, wherein, The first exhaust port has multiple first through holes. The second exhaust port has multiple second through holes.

8. The electronic device according to claim 7, wherein, The size of each of the plurality of first through holes is larger than the size of each of the plurality of second through holes.

9. The electronic device according to claim 1 or 2, wherein, The electronic device also includes a display unit disposed on the first main surface.

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