Heat dissipation assembly and wearable device

Abstract

Provided in the present application are a heat dissipation assembly and a wearable device. The heat dissipation assembly comprises: a main housing, which is configured in a flat shape, wherein the main housing is penetrated by an airflow channel in the direction of its length; the inner wall of the airflow channel is provided with an air blowing port, which is used for blowing air toward an air outlet end of the airflow channel, the airflow blown out from the air blowing port being used for drawing in air from an air inlet end of the airflow channel toward the air outlet end of the airflow channel; a heat dissipation fan, which is arranged on one side of the main housing in the direction of its width, an air outlet end of the heat dissipation fan being in communication with the air blowing port so as to deliver air to the air blowing port; and a heat dissipation member, which is arranged at the air outlet end of the airflow channel.

Description

Heat dissipation components and wearable devices

[0001] This application claims priority to Chinese Patent Application No. 202411806137.6, filed on December 9, 2024, entitled "Heat Dissipation Component and Wearable Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of heat dissipation technology, and more specifically, to a heat dissipation component and a wearable device including the heat dissipation component. Background Technology

[0003] In related technologies, to improve the heat dissipation performance of wearable devices (e.g., VR / MR devices), air-cooled heat dissipation components are typically incorporated into the device. These components mainly consist of a cooling fan and a heat sink. The cooling fan increases heat conduction and convection by forcing airflow, thereby improving heat dissipation efficiency. However, the airflow generated by the cooling fan itself is limited, and the heat dissipation performance of the component is poor at low speeds. To achieve ideal heat dissipation, the fan needs to maintain a high speed. While high-speed cooling fans can provide sufficient airflow, they also generate significant noise, which can negatively impact the user experience.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] One objective of this application is to provide a new technical solution for a heat dissipation component.

[0006] According to a first aspect of this application, a heat dissipation component is provided, comprising:

[0007] The main housing is configured in a flat shape and has an airflow channel extending along its length. The inner wall of the airflow channel has air inlets.

[0008] The air blowing port is used to blow air toward the air outlet of the airflow channel, and the airflow blown out by the air blowing port is used to draw air from the air inlet of the airflow channel toward the air outlet of the airflow channel.

[0009] A cooling fan is provided on one side of the main housing in its width direction, and the air outlet of the cooling fan is connected to the air outlet to deliver air to the air outlet;

[0010] A heat sink is provided at the air outlet end of the airflow channel.

[0011] Optionally, the air inlet is formed as an annular opening surrounding the airflow channel.

[0012] Optionally, the main housing includes:

[0013] The outer wall body is fitted onto the inner wall body. The first end of the outer wall body is connected to the first end of the inner wall body. The second end of the outer wall body has a flanged portion that extends to the inside of the second end of the inner wall body.

[0014] The flanged portion and the inner wall surface of the inner wall body define the airflow channel, and the inner wall surface of the outer wall body and the inner wall body define an annular air duct.

[0015] The outer wall has a connection port on one side of the main housing in the width direction. The connection port communicates with the annular air duct, and the exhaust end of the cooling fan communicates with the connection port.

[0016] The gap between the flange and the inner wall forms the air inlet.

[0017] Optionally, the width of the gap gradually decreases from its inlet end to its outlet end.

[0018] Optionally, the flow area of ​​the airflow channel gradually decreases from its inlet end to the air outlet and gradually increases from the air outlet to its outlet end.

[0019] Optionally, along the length of the main housing, the exhaust end of the cooling fan is located between the first and second ends of the inner wall.

[0020] Optionally, the second end of the inner wall body is formed with a flared portion, and the gap between the flared portion and the flanged portion forms the air blowing port.

[0021] Optionally, the heat sink is provided with multiple heat dissipation channels, which extend through the heat sink along the length of the main housing and are connected to the air outlet of the airflow channel.

[0022] According to a second aspect of this application, a wearable device is provided, including the heat dissipation component described in any of the preceding claims.

[0023] Optionally, the wearable device further includes:

[0024] The housing has a heat dissipation component disposed inside it, and the housing has a first air inlet, a second air inlet, and an air outlet.

[0025] The first air inlet is close to the air intake end of the cooling fan, the second air inlet is close to the air intake end of the airflow channel, and the air outlet end of the airflow channel is connected to the air outlet.

[0026] In this application, the main housing of the heat dissipation component has an airflow channel and an air outlet. The airflow from the air outlet can form a low-pressure zone near the inner wall of the airflow channel, thereby drawing air from the air inlet end of the airflow channel toward the air outlet end. This makes the airflow volume at the air outlet end of the airflow channel far exceed the airflow volume of the cooling fan itself, thus effectively improving the heat dissipation performance of the heat dissipation component and avoiding excessive noise. In addition, the main housing adopts a flat design, and the cooling fan is located on one side of the width direction of the main housing. This arrangement effectively controls the thickness of the heat dissipation component, making it easier to integrate into devices with smaller thicknesses, thus improving the compactness and portability of the device.

[0027] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0029] Figure 1 is a schematic diagram of a heat dissipation assembly according to an embodiment of the present application;

[0030] Figure 2 is one of the cross-sectional views of a heat dissipation assembly according to an embodiment of the present application;

[0031] Figure 3 is a second cross-sectional view of a heat dissipation assembly according to an embodiment provided in this application;

[0032] Figure 4 is a schematic diagram of two heat dissipation components connected together according to an embodiment of this application;

[0033] Figure 5 is a schematic diagram of the structure of a wearable device according to an embodiment of this application.

[0034] Reference numerals in the attached figures: 100, heat dissipation assembly; 10, main housing; 10a, airflow channel; 10b, air outlet; 10c, annular air duct; 11, inner wall; 111, flared section; 12, outer wall; 121, flanged section; 122, connection port; 20, cooling fan; 30, heat sink; 31, heat dissipation channel; 200, outer shell; 201, first air inlet; 202, second air inlet; 203, air outlet. Detailed Implementation

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] According to one embodiment of this application, a heat dissipation assembly 100 is provided. As shown in Figures 1 to 3, the heat dissipation assembly 100 includes:

[0041] The main housing 10 is configured in a flat shape and has an airflow channel 10a extending along its length. The inner wall of the airflow channel 10a has an air outlet 10b.

[0042] The air blowing port 10b is used to blow air toward the air outlet of the airflow channel 10a, and the airflow blown out by the air blowing port 10b is used to draw air from the air inlet of the airflow channel 10a toward the air outlet of the airflow channel 10a.

[0043] A cooling fan 20 is disposed on one side of the main housing 10 in its width direction. The air outlet of the cooling fan 20 is connected to the air outlet 10b to deliver air to the air outlet 10b.

[0044] Heat sink 30 is disposed at the air outlet end of the airflow channel 10a.

[0045] Specifically, as shown in Figures 1 to 3, the main shell 10 can be made of metal, polymer, or other materials. The main shell 10 has a flat structure, for example, it can be a cuboid or an elliptical cylinder. The main shell 10 defines an airflow channel 10a that extends along its length. The first end of the airflow channel 10a can be an air outlet, and the second end of the airflow channel 10a can be an air inlet.

[0046] As shown in Figures 1 and 2, the inner wall of the airflow channel 10a has one or more air outlets 10b, which can blow air along the inner wall of the airflow channel 10a toward the outlet end of the airflow channel 10a. A cooling fan 20 is fixedly connected to one side of the main housing 10 in its width direction. The cooling fan 20 can be a centrifugal cooling fan. The outlet end of the cooling fan 20 is connected to the air outlet 10b, so that the cooling fan 20 can deliver air to the air outlet 10b, and the air outlet 10b can blow air toward the outlet end of the airflow channel 10a.

[0047] Because the airflow velocity is relatively high near the inner wall of the airflow channel 10a, a low-pressure area will be formed near the inner wall of the airflow channel 10a. At the same time, because air has viscosity, air can be drawn from the air inlet end of the airflow channel 10a toward the air outlet end of the airflow channel 10a. That is, air is induced to flow from the air inlet end of the airflow channel 10a to the air outlet end of the airflow channel 10a, so that the air volume at the air outlet end of the airflow channel 10a is much greater than the air volume blown out from the air outlet 10b.

[0048] The heat sink 30 is typically made of metal, utilizing the excellent thermal conductivity of metal to effectively dissipate heat from heat-generating components. The heat sink 30 is installed at the outlet of the airflow channel 10a and can be fixedly connected to the main housing 10 by bonding or welding to form a single unit. The airflow blowing from the outlet of the airflow channel 10a can directly dissipate heat from the heat sink 30, thus improving the heat dissipation efficiency of the heat dissipation assembly 100 without increasing the fan speed, thereby reducing noise.

[0049] In this embodiment, the main housing 10 of the heat dissipation assembly 100 is provided with an airflow channel 10a and an air outlet 10b. The airflow blown out of the air outlet 10b can form a low-pressure zone near the inner wall of the airflow channel 10a, thereby drawing air from the air inlet end of the airflow channel 10a toward the air outlet end of the airflow channel 10a. This makes the airflow volume at the air outlet end of the airflow channel 10a far exceed the airflow volume of the cooling fan 20 itself, thereby effectively improving the heat dissipation performance of the heat dissipation assembly 100 and avoiding excessive noise. In addition, the main housing 10 adopts a flat design, and the cooling fan 20 is located on one side of the width direction of the main housing 10. This arrangement effectively controls the thickness of the heat dissipation assembly 100, making it easier to integrate into devices with smaller thicknesses, thus improving the compactness and portability of the device.

[0050] In one example, the air inlet 10b is formed as an annular opening surrounding the airflow channel 10a.

[0051] As shown in Figure 2, in this example, the air outlet 10b is constructed as an annular opening that surrounds the outer periphery of the airflow channel 10a. This arrangement allows the blown airflow to form an annular low-pressure zone around the outer periphery of the airflow channel 10a. The annular low-pressure zone can induce airflow throughout the entire periphery of the airflow channel 10a, rather than just one side of the airflow channel 10a, thereby further increasing the airflow volume of the air outlet 10b and improving the heat dissipation performance of the heat dissipation component 100.

[0052] In one example, the main housing 10 includes:

[0053] The inner wall body 11 and the outer wall body 12 are fitted onto the inner wall body 11. The first end of the outer wall body 12 is connected to the first end of the inner wall body 11. The second end of the outer wall body 12 has a flange 121 that extends to the inside of the second end of the inner wall body 11.

[0054] The flange 121 and the inner wall surface of the inner wall body 11 define the airflow channel 10a, and the inner wall surface of the outer wall body 12 and the inner wall body 11 define the annular air duct 10c.

[0055] The outer wall 12 has a connection port 122 on one side of the main housing 10 in the width direction. The connection port 122 communicates with the annular air duct 10c, and the exhaust end of the cooling fan 20 communicates with the connection port 122.

[0056] The gap between the flange 121 and the inner wall 11 forms the air inlet 10b.

[0057] As shown in Figures 2 and 3, the main shell 10 is mainly divided into two parts: an inner wall body 11 and an outer wall body 12. Both the outer wall body 12 and the inner wall body 11 are flat structures. The outer wall body 12 is fitted outside the inner wall body 11. The first end of the outer wall body 12 is fixedly connected to the first end of the inner wall body 11 to close the opening between the first end of the outer wall body 12 and the first end of the inner wall body 11. The remaining part of the outer wall body 12 can be spaced apart from the inner wall body 11.

[0058] Specifically, the second end of the outer wall 12 is folded inward toward the second end of the inner wall 11 to form a flange 121, and the flange 121 is spaced apart from the inner wall surface of the inner wall 11, so that the flange 121 and the inner wall surface of the inner wall 11 define an airflow channel 10a that penetrates the main housing 10, the inner wall surface of the outer wall 12 and the inner wall 11 define an annular air duct 10c surrounding the airflow channel 10a, and the gap between the flange 121 and the inner wall surface of the inner wall 11 forms an air outlet 10b surrounding the airflow channel 10a.

[0059] The outer wall 12 has a connection port 122 on one side of the main housing 10 in the width direction, which communicates with the annular air duct 10c. The cooling fan 20 is fixedly connected to the outer wall 12 at the location where the connection port 122 is provided, and the air outlet of the cooling fan 20 is connected to the connection port 122, so that the annular air duct 10c connects the air outlet of the cooling fan 20 with the air blowing port 10b.

[0060] In this example, the main housing 10 defines the air outlet 10b surrounding the airflow channel 10a and the annular air duct 10c connecting the air outlet 10b and the cooling fan 20. The structure is compact and does not require additional structure connecting the air outlet 10b and the cooling fan 20. Furthermore, the annular air duct 10c facilitates the uniform delivery of air to the annular air outlet 10b, which is beneficial for the heat sink 30 to dissipate heat evenly.

[0061] In one example, the width of the gap gradually decreases from its inlet end to its outlet end.

[0062] Specifically, as shown in Figures 2 and 3, the gap between the flange 121 and the inner wall 11 has an air inlet and an air outlet. The air inlet of this gap is close to the air inlet of the airflow channel 10a, and the air outlet of this gap is close to the air outlet of the airflow channel 10a. The width of this gap gradually decreases from its air inlet to its air outlet. This arrangement can increase the speed of the airflow blown out of the air outlet 10b, and is more conducive to forming a low-pressure zone near the inner wall surface of the airflow channel 10a, which can further increase the air volume. Furthermore, this arrangement can better guide the air out of the air outlet 10b, reduce airflow turbulence, and help improve the stability and uniformity of the airflow.

[0063] In one example, the flow area of ​​the airflow channel 10a gradually decreases from its inlet end to the air outlet 10b, and gradually increases from the air outlet 10b to its outlet end.

[0064] As shown in Figures 2 and 3, the flow area of ​​the airflow channel 10a gradually decreases from its inlet to its outlet, reaching a minimum at the air outlet 10b between the inlet and outlet, and then gradually increases to a size corresponding to that of the heat sink 30. This gradual decrease in flow area accelerates the airflow within the channel, with the airflow velocity peaking in the region of minimum flow area. According to Bernoulli's principle, increased airflow velocity leads to decreased pressure, which helps improve the efficiency of drawing air from the inlet to the outlet. Therefore, this structure increases the airflow volume at the outlet of the airflow channel 10a, thereby improving the heat dissipation performance of the heat sink 100.

[0065] In one example, along the length of the main housing 10, the cooling fan 20 is located between the first and second ends of the inner wall 11.

[0066] As shown in Figure 3, in this example, the air outlet of the cooling fan 20 is fixedly connected to the outer wall 12. In the length direction of the main housing 10, the air outlet of the cooling fan 20 is located between the first end and the second end of the inner wall 11, which can prevent the airflow from flowing out directly from the air outlet 10b. This is conducive to the uniform delivery of air to the annular air outlet 10b, thereby facilitating the uniform heat dissipation of the heat sink 30.

[0067] In one example, the second end of the inner wall 11 is formed with a flared portion 111, and the gap between the flared portion 111 and the flange portion 121 is formed as the air inlet 10b.

[0068] Specifically, as shown in Figures 2 and 3, the second end of the inner wall 11 gradually increases in size in both the width and thickness directions of the main housing 10 to form a flared portion 111. The gap between the flared portion 111 and the flanged portion 121 forms an annular air outlet 10b. The flared portion 111 facilitates a structure where the width of the gap gradually decreases from its inlet end to its outlet end. Furthermore, the flared portion 111 reduces the distance between the inner wall 11 and the inner wall surface of the outer wall 12, which helps the airflow generated by the cooling fan 20 to be more evenly distributed in the annular air duct 10c, thereby facilitating the even delivery of air to the annular air outlet 10b and achieving uniform heat dissipation of the heat sink 30.

[0069] In one example, in the thickness direction of the main housing 10, the middle position of the air outlet of the cooling fan 20 is the same as the middle position of the inner wall 11.

[0070] In the thickness direction of the main housing 10, the inner wall 11 has a first surface and a second surface that are disposed opposite to each other. In this direction, the distance between the air outlet of the cooling fan 20 and the first surface and the second surface of the inner wall 11 is the same, so that the middle position of the air outlet of the cooling fan 20 coincides with the middle position of the inner wall 11 in this direction. This allows the airflow blown by the cooling fan 20 to flow evenly to both sides of the inner wall 11 in the thickness direction of the main housing 10, which is beneficial to uniformly deliver air to the annular air outlet 10b, thereby achieving uniform heat dissipation of the heat sink 30.

[0071] In one example, the heat sink 30 is provided with a plurality of heat dissipation channels 31, which penetrate the heat sink 30 along the length of the main housing 10 and are connected to the outlet end of the airflow channel 10a.

[0072] Specifically, as shown in Figure 1, the heat sink 30 has a flat structure and a through channel extending along its length. Multiple heat dissipation fins are arranged within the through channel, extending along the length of the heat sink 30 and spaced apart in the width direction. This arrangement divides the through channel into multiple heat dissipation channels 31, improving heat dissipation efficiency. The length of the heat sink 30 is the same as that of the main housing 10. The heat sink 30 is fixedly connected to the end of the main housing 10 near the air outlet of the airflow channel 10a, and the heat dissipation channel 31 communicates with the air outlet of the airflow channel 10a, allowing the airflow from the airflow channel 10a to directly flow into the heat sink 30 for cooling.

[0073] Of course, multiple heat dissipation fins can also be directly set on the surface of the heat dissipation component 30 in the thickness direction, and their specific configuration can be determined according to actual needs.

[0074] This application also provides a wearable device, which can be a head-mounted device, such as a VR device or a MR device, and includes the heat dissipation component 100 described in any of the above embodiments. Since the heat dissipation component 100 according to the embodiments of this application has the above-described technical effects, the wearable device according to the embodiments of this application also has corresponding technical effects, which will not be repeated in this embodiment.

[0075] In one example, wearable devices also include:

[0076] The housing 200 has the heat dissipation component 100 disposed inside the housing 200. The housing 200 is provided with a first air inlet 201, a second air inlet 202 and an air outlet 203.

[0077] The first air inlet 201 is close to the air intake end of the cooling fan 20, the second air inlet 202 is close to the air intake end of the airflow channel 10a, and the air outlet end of the airflow channel 10a is connected to the air outlet 203.

[0078] Specifically, as shown in Figure 5, the housing 200 can be the housing of a VR device or an MR device. The heat dissipation component 100 is installed inside the housing 200. An optical module is also installed inside the housing 200. The optical module is located on the side of the housing 200 near the eye. The heat dissipation component 100 is located on the side of the optical module away from the side near the eye. Electronic devices are also installed inside the housing 200. The electronic devices are located on the side of the heat dissipation component 100 away from the optical module. Thus, the heat dissipation component 100 can dissipate heat from the electronic devices and the heat-generating devices on the optical module.

[0079] A first air inlet 201 is provided on the left or right side of the outer casing 200, close to the air intake end of the cooling fan 20. The first air inlet 201 provides the necessary air to the cooling fan 20. A second air inlet 202 is provided on the lower side of the outer casing 200, close to the air intake end of the airflow channel 10a. The second air inlet 202 provides the necessary air to the airflow channel 10a. This arrangement ensures that the airflow channel 10a and the cooling fan 20 receive sufficient airflow, thereby improving heat dissipation efficiency.

[0080] An air outlet 203 is provided on the upper side of the outer casing 200. The heat sink 30 is located between the airflow channel 10a and the air outlet 203. The first end of the heat sink 31 is connected to the air outlet end of the airflow channel 10a, and the second end of the heat sink 31 is connected to the air outlet 203 through a flow guiding structure. This ensures that the airflow after heat exchange will not remain inside the outer casing 200, thus guaranteeing the heat dissipation efficiency of the heat sink component 100.

[0081] As shown in Figure 4, in one example, the wearable device includes a left optical module and a right optical module. Two heat dissipation components 100 are installed inside the housing 200. The two heat dissipation components 100 are distributed along their own width direction. The main housing 10 of the two heat dissipation components 100 are fixedly connected together by a connecting block. One heat dissipation component 100 can correspond to the position of the left optical module, and the other heat dissipation component 100 can correspond to the position of the right optical module.

[0082] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0083] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A heat dissipation component, characterized in that, include: The main housing is configured in a flat shape and has an airflow channel extending along its length. The inner wall of the airflow channel has air inlets. The air blowing port is used to blow air toward the air outlet of the airflow channel, and the airflow blown out by the air blowing port is used to draw air from the air inlet of the airflow channel toward the air outlet of the airflow channel. A cooling fan is provided on one side of the main housing in its width direction, and the air outlet of the cooling fan is connected to the air outlet to deliver air to the air outlet; A heat sink is provided at the air outlet end of the airflow channel.

2. The heat dissipation assembly according to claim 1, characterized in that, The air inlet is formed as an annular opening surrounding the airflow channel.

3. The heat dissipation assembly according to claim 1, characterized in that, The main housing includes: The outer wall body is fitted onto the inner wall body. The first end of the outer wall body is connected to the first end of the inner wall body. The second end of the outer wall body has a flanged portion that extends to the inside of the second end of the inner wall body. The flanged portion and the inner wall surface of the inner wall body define the airflow channel, and the inner wall surface of the outer wall body and the inner wall body define an annular air duct. The outer wall has a connection port on one side of the main housing in the width direction. The connection port communicates with the annular air duct, and the exhaust end of the cooling fan communicates with the connection port. The gap between the flange and the inner wall forms the air inlet.

4. The heat dissipation assembly according to claim 3, characterized in that, The width of the gap gradually decreases from its inlet end to its outlet end.

5. The heat dissipation assembly according to claim 1, characterized in that, The flow area of ​​the airflow channel gradually decreases from its inlet end to the air outlet and gradually increases from the air outlet to its outlet end.

6. The heat dissipation assembly according to claim 3, characterized in that, Along the length of the main housing, the exhaust end of the cooling fan is located between the first and second ends of the inner wall.

7. The heat dissipation assembly according to claim 6, characterized in that, The second end of the inner wall is formed with a flared portion, and the gap between the flared portion and the flanged portion forms the air blowing port.

8. The heat dissipation assembly according to claim 3, characterized in that, In the thickness direction of the main housing, the middle position of the air outlet of the cooling fan is the same as the middle position of the inner wall.

9. The heat dissipation assembly according to claim 1, characterized in that, The heat sink is provided with multiple heat dissipation channels, which penetrate the heat sink along the length of the main housing and are connected to the air outlet of the airflow channel.

10. A wearable device, characterized in that, Includes the heat dissipation component as described in any one of claims 1 to 9.

11. The wearable device according to claim 10, characterized in that, Also includes: The housing has a heat dissipation component disposed inside it, and the housing has a first air inlet, a second air inlet, and an air outlet. The first air inlet is close to the air intake end of the cooling fan, the second air inlet is close to the air intake end of the airflow channel, and the air outlet end of the airflow channel is connected to the air outlet.

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