Patent Description:
High performance servers are often placed in racks within data centers in stable, highly regulated environmental conditions. Because the servers are inside, the servers are protected from rain, wind, dirt, dust, and other environmental conditions that may negatively impact the performance of the servers. Servers in these data centers generally have open housings with vents that allow air to flow through the housing and cool the electronic components inside.

Due to advances such as high speed telecommunications and artificial intelligence, reliable, efficient, and fast communication between data centers and signal sources is vital. To ensure this reliable and fast communication, servers (e.g., edge servers) can be placed between the data center and the signal source. Edge servers can act as an intermediate transmission point along a communication path between a data center and a signal source. However, edge servers often need to be physically located in an outdoor environment (i.e., not contained within a building), and thus cannot be placed in a highly-regulated environment such as a data center. Thus, such located edge servers need to be protected from the outdoor environment, but also need to be cooled so that the electronic components of the edge server do not overheat. <CIT> discloses a multipurpose enclosure for telecommunication applications comprising plural walls that define a first chamber and a second chamber and a heat generating component positioned in the first chamber. Further, <CIT> discloses a heat dissipating device. Moreover, <CIT> discloses a housing for enclosing an electronic control unit. Further prior art is also known from <CIT>. The present disclosure is directed to solving these and other problems.

According to aspects of the present disclosure, an outdoor edge server is provided. The outdoor edge server includes an inner housing and an outer housing. The inner housing contains one or more high-power electronic components positioned in the inner housing and one or more low-power electronic components positioned in the inner housing, the one or more low-power electronic components generating less heat than the one or more high-power electronic components, wherein the electronic components are necessary for the edge server to function. The inner housing is water-tight and particulate-tight so as to protect the electronic components from wind, rain, dirt, dust, etc., that may be present in the outdoor environment. In order to keep the electronic components cool, the inner housing includes a second fan that is configured to circulate the air within the inner housing. This circulating air assists in cooling the electronic components.

The inner housing which is water-tight and particulate-tight is disposed completely within the outer housing. The inner housing and the outer housing define an air channel between the inner housing and the outer housing. The outer housing defines air vents at either end of the air channel that allow air to flow into the air channel through a first air vent, through the air channel, and out of the air channel through a second air vent.

The edge server includes one or more heat sinks that are at least partially disposed in the air channel, and located outside of the inner housing but inside the outer housing. A first type of heat sink has one or more low-power electronic components and has an inner portion that is disposed within the inner housing, and an outer portion that is disposed in the air channel outside of the inner housing. This first heat sink thus extends through the inner housing. However, the interface between the first heat sink and the inner housing is sealed so that the electronic components remain protected from water, dust, dirt, etc. As the air is circulated within the inner housing, the heat that is transferred away from the electronic components can further be transferred to the inner portion of the first heat sink. This heat then travels to the outer portion of the first heat sink such that the heat is transferred away from the interior of the inner housing.

A second type of heat sink has one or more high-power electronic components and is positioned entirely in the air channel outside of the inner housing. One or more heat pipes extend through the inner housing so as to physically couple the second heat sink to an electronic component within the inner housing. Similar to the first heat sink, the interface between the heat pipes and the inner housing is sealed so that the electronic components remain protected from water, dust, dirt, etc. One end of each heat pipe is generally physically attached to the electronic component, either directly or via a base plate. The other end of each heat pipe is physically attached to the second heat sink so that heat generated by the electronic component is transferred to the second heat sink via the heat pipes.

Because of the direct physical connect, the second type of heat sink is generally used to remove heat from high power electronic components. The first type of heat sink is generally used to remove heat from low power electronic components.

A second fan is also positioned within the air channel between the inner housing and the outer housing. The fan is configured to cause air to enter the air channel through one of the air vents and flow through the air channel. As the air flows through the air channel, the air flows past both the outer portion of the first heat sink, and the second heat sink. The flowing air assists in removing the heat that has been transferred to the first heat sink and the second heat sink from the interior of the inner housing. The flowing air then exits the air channel at the second air vent, thus removing the heat from the edge server. Moreover, a first fan is positioned within the inner housing, wherein the one or more low heat generating electronic components is positioned between the one or more high heat generating electronic components and the first fan.

The disclosure will be better understood from the following description of exemplary embodiments together with reference to the accompanying drawings, in which:.

The present inventions can be embodied in many different forms. Representative embodiments are shown in the drawings, and will herein be described in detail. The present disclosure is an example or illustration of the principles of the present disclosure, and is not intended to limit the broad aspects of the disclosure to the embodiments illustrated. To that extent, elements, and limitations that are disclosed, for example, in the Abstract, Summary, and Detailed Description sections, but not explicitly set forth in the claims, should not be incorporated into the claims, singly or collectively, by implication, inference, or otherwise. For purposes of the present detailed description, unless specifically disclaimed, the singular includes the plural and vice versa; and the word "including" means "including without limitation. " Moreover, words of approximation, such as "about," "almost," "substantially," "approximately," and the like, can be used herein to mean "at," "near," or "nearly at," or "within <NUM>-<NUM>% of," or "within acceptable manufacturing tolerances," or any logical combination thereof, for example.

<FIG> shows a block diagram of an edge server <NUM> that can be located in an outdoor environment and be subject to rain, wind, dust, dirt, etc. The edge server <NUM> includes an inner housing <NUM> that is disposed substantially within an outer housing <NUM>. Any electronic components necessary for the edge server <NUM> to function are located within the inner housing <NUM>. For example, the edge server can include a central processing unit (CPU), a graphics processing unit (GPU), a memory device such as a dual in-line memory module (DIMM), a single in-line memory module (SIMM), a communication module, etc. In the implementation shown in <FIG>, the inner housing <NUM> generally includes at least electronic components <NUM> and <NUM>.

The inner housing <NUM> is designed to protect the electronic components <NUM>, <NUM> from being harmed by surrounding environmental conditions. Because the edge server <NUM> is placed outside, the edge server <NUM> generally needs to be able to withstand rain, humidity, snow, dirt, dust, and any other potentially negative environmental conditions. Thus, the inner housing <NUM> is configured so as to generally prevent water, dirt, dust, salt, etc., from entering the inner housing <NUM> and harming the electronic components <NUM>, <NUM>. In some implementations, the inner housing <NUM> has at least an IP66 rating. An IP66 rating means that the inner housing <NUM> generally prevents water and particulates such as dust, dirt, salt, etc., from entering the inner housing <NUM>. Thus, the edge server <NUM> may be substantially water-tight and particulate-tight, and can be safely placed outside. In other implementations, the inner housing <NUM> may provide more or less protection, depending on the specific environmental conditions in the area where the edge server <NUM> is placed.

The electronic components <NUM>, <NUM> within the inner housing <NUM> generate heat during operation. In order to cool the inner housing <NUM> and to help prevent the electronic components <NUM>, <NUM> from overheating, a first fan 34A is positioned within the inner housing <NUM>. The first fan 34A is configured to circulate air within the inner housing <NUM>, thereby cooling the electronic components <NUM>, <NUM> within the inner housing <NUM>. However, because the inner housing <NUM> is water-tight and particulate-tight, the inner housing <NUM> does not include any vents through which hot air can escape.

The inner housing <NUM> is disposed partially or completely within the outer housing <NUM>. The inner housing <NUM> and the outer housing <NUM> define an air channel <NUM> that is located within the outer housing <NUM> and outside of the inner housing <NUM>. A first air vent 16A is defined in the outer housing <NUM> and is located adjacent to a first end 20A of the air channel <NUM>. A second air vent 16B is defined in the outer housing <NUM> and is located adjacent to a second end 20B of the air channel <NUM>. The first and second air vents 16A, 16B are open to the environment such that air can flow into the air channel <NUM> through the first air vent 16A, through the air channel <NUM>, and out of the second air vent 16B. The direction of air flow through the air channel <NUM> is shown by arrows 19A, 19B, and 19C. Because the inner housing <NUM> is water-tight and particulate-tight, the electronic components <NUM>, <NUM> within the inner housing <NUM> remain protected from the environment, even if any water or particulates enter the air channel <NUM>.

The edge server <NUM> can include one or more heat sinks that are in thermal exchange with the interior of the inner housing <NUM> and/or with any of the electronic components <NUM>, <NUM> positioned within the inner housing <NUM>. The heat sinks thus assist in removing heat from within the inner housing <NUM>. In the implementation shown in <FIG>, the edge server <NUM> includes a first heat sink <NUM> and a second heat sink <NUM>. The first heat sink <NUM> has an inner portion 26A and an outer portion 26B. The inner portion 26A is disposed within the inner housing <NUM>. The outer portion 26B is disposed in the air channel <NUM>, outside of the inner housing <NUM> and within the outer housing <NUM>. The first heat sink <NUM> thus extends through the inner housing <NUM> and is partially positioned both within the inner housing <NUM> and outside of the inner housing <NUM> in the air channel <NUM>. The first heat sink <NUM> is designed such that the interface between the first heat sink <NUM> and the inner housing <NUM> (around the periphery of the first heat sink <NUM>) seals off the interior of the inner housing <NUM> from the environment. In this manner, the inner housing <NUM> remains water-tight and particulate-tight, even with the first heat sink <NUM> extending through the inner housing <NUM>.

In some implementations, the inner portion 26A of the first heat sink <NUM>, the outer portion 26B of the first heat sink <NUM>, and the inner housing <NUM> are all formed as a single component. In other implementations, the inner portion 26A of the first heat sink <NUM>, the outer portion 26B of the first heat sink <NUM>, and the inner housing <NUM> are all formed as separate components and then joined together. In still other implementations, the inner portion 26A of the first heat sink <NUM> and the outer portion 26B of the first heat sink <NUM> are formed as a single component, and the inner housing <NUM> is formed as a separate component. The two components can then be joined together by inserting the first heat sink <NUM> through an aperture in the inner housing <NUM> and sealing the interface between the first heat sink <NUM> and the inner housing <NUM>. In still other implementations, the inner housing <NUM> and one portion of the first heat sink <NUM> are formed as a single component, and the other portion of the first heat sink <NUM> is formed as a separate component. The two components can then be joined together.

As the first fan 34A causes the air within the inner housing <NUM> to circulate, some of the heat generated by the electronic component <NUM> of the edge server <NUM> is transferred to the inner portion 26A of the first heat sink <NUM> that is disposed within the inner housing <NUM>. This heat can then flow to the outer portion 26B of the first heat sink <NUM>, thereby removing the heat from the inner housing <NUM>. The first heat sink <NUM> thus allows more heat to be removed from the inner housing <NUM>.

The second heat sink <NUM> is generally of a type known as a remote heat sink. The second heat sink <NUM> is disposed in the air channel <NUM> outside of the inner housing <NUM>, but within the outer housing <NUM>. The second heat sink <NUM> is thermally coupled to the electronic component <NUM> via one or more heat pipes <NUM>. A first end 32A of each of the heat pipes <NUM> is positioned outside of the inner housing <NUM> and is thermally coupled to the second heat sink <NUM>. A second end 32B of the heat pipes <NUM> is positioned within the inner housing <NUM> and is thermally coupled to the electronic component <NUM>.

In some implementations, the second ends 32B of the heat pipes <NUM> are physically attached to the electronic component <NUM> such that the second ends 32B of the heat pipes <NUM> are in direct physical contact with the electronic component <NUM>. In other implementations, the second ends 32B of the heat pipes <NUM> are physically attached to a thermal base plate, which in turn is physically attached to the electronic component <NUM>. In still other implementations, the second end 32B of some or all of the heat pipes <NUM> can be positioned in close proximity to the electronic component <NUM> without contacting the electronic component <NUM>. In any of these implementations, heat from the electronic component <NUM> is transferred to the heat pipes <NUM>.

Similar to the first heat sink <NUM>, the heat pipes <NUM> extend through the inner housing <NUM> to the second heat sink <NUM>. The heat pipes <NUM> are designed such that the interface between the heat pipes <NUM> and the inner housing <NUM> (around the periphery of each of the heat pipes <NUM>) seals off the interior of the inner housing <NUM> from the environment. In this manner, the inner housing <NUM> remains water-tight and particulate-tight, even with the heat pipes <NUM> extending through the inner housing <NUM>.

The first end 32A of the heat pipes <NUM> is thermally coupled to the second heat sink <NUM>, generally via direct physical contact. However, in some implementations, the first end 32A of some or all of the heat pipes <NUM> can be positioned in close proximity to the second heat sink <NUM> without contacting the second heat sink <NUM>. The heat pipes <NUM> thus transfer heat produced by the electronic component <NUM> out of the inner housing <NUM> to the second heat sink <NUM>.

A larger amount of heat can be transferred to the second heat sink <NUM> as compared to the first heat sink <NUM>, due to the heat pipes <NUM> that connect the electronic component <NUM> and the second heat sink <NUM>. Thus, the electronic component <NUM> is generally a high-power electronic component that generates more heat than the electronic component <NUM>, which is generally a low-power electronic component. By using the second heat sink <NUM> that is in direct or near-direct physical contact with the electronic component <NUM> via the heat pipes <NUM>, the edge server <NUM> can utilize high-power electronic components that are operated at full speed and/or capacity. The first heat sink <NUM> can be used to exchange the heat generated by one or more low-power electronic components, such as the electronic component <NUM>, without needing to implement a more complex remote heat sink with heat pipes such as the second heat sink <NUM> with heat pipes <NUM>.

In other implementations, the second heat sink <NUM> has an inner portion disposed within the inner housing <NUM>, and an outer portion disposed within the air channel <NUM> outside of the inner housing <NUM>, similar to the first heat sink <NUM>. In these implementations, the first ends 32A of the heat pipes <NUM> are physically attached to the inner portion of the second heat sink <NUM>, and remain disposed entirely within the inner housing <NUM>.

The first heat sink <NUM> and the second heat sink <NUM> can be made of any suitable material. For example, the first heat sink <NUM> and the second heat sink <NUM> can be made of aluminum, copper, aluminum alloys, copper alloys, or any combinations of these materials.

Due to the presence of both the first heat sink <NUM> and the second heat sink <NUM>, heat that is generated by the electronic components <NUM>, <NUM> within the inner housing <NUM> can be transferred to the exterior of the inner housing <NUM> without compromising the protection against water and particulates offered by the inner housing <NUM>.

A second fan 34B is also disposed in the air channel <NUM> between the inner housing <NUM> and the outer housing <NUM>. In some implementations, the second fan 34B is disposed between the second air vent 16B and the second heat sink <NUM>. In other implementations however, the second fan 34B can be disposed at any location within the air channel <NUM>. The second fan 34B is configured to draw air into the air channel <NUM> through the first air vent 16A from the outside environment. This air flows through the air channel <NUM> until it exits the air channel <NUM> at the second air vent 16B.

As the air flows through the air channel <NUM>, the air flows past the outer portion 26B of the first heat sink <NUM>. The flowing air removes some or all of the heat that has been transferred to the outer portion 26B of the first heat sink <NUM> from the electronic component <NUM>. The air flowing through the air channel <NUM> also flows past the second heat sink <NUM>. The flowing air thus also removes some or all of the heat that has been transferred to the second heat sink <NUM> from the electronic component <NUM>. As the flowing air exits the air channel <NUM> at the second air vent 16B, the heat generated by the electronic components <NUM> and <NUM> is transferred to the exterior of the outer housing <NUM>.

In some implementations, one or both of the outer portion 26B of the first heat sink <NUM> and the second heat sink <NUM> includes a plurality of fins. Each fin is generally spaced apart a distance from adjacent fins. As the air flows through the air channel <NUM>, the air can flow through the plurality of fins of the first heat sink <NUM> and the second heat sink <NUM>, which removes heat more effectively than if the air flows around the first heat sink <NUM> and the second heat sink <NUM>.

<FIG> shows a top plan view of the interior of the inner housing <NUM> in one implementation of the edger sever <NUM>. The inner housing <NUM> includes two low-power electronic components 22A and 22B, and a high-power electronic component <NUM>. The inner housing <NUM> also includes the first fan 34A. Other implementations may have these components in a different arrangement. Moreover, other implementations may have a different number of electronic components and/or fans.

The low-power electronic components 22A, 22B generate heat during operation, which heats the surrounding air within the inner housing <NUM>. The first fan 34A is configured to cause this hot air to move away from the low-power electronic components 22A, 22B. The moving hot air forces cooler air that has not yet been heated toward the low-power electronic components 22A, 22B, where it begins to heat up. As the hot air moves away from the low-power electronic components 22A, 22B heat from the hot air is transferred to the inner portion 26A of the first heat sink <NUM>, and subsequently to the outer portion 26B of the first heat sink <NUM> (<FIG>). This hot air thus cools down, while the cooler air forced toward the low-power electronic components 22A, 22B heats up. This cycle continues as the first fan 34A constantly causes hot air to move away from the low-power electronic components 22A, 22B and causes cooler air to move towards the low-power electronic components 22A, 22B.

<FIG> also shows the heat pipes <NUM> extending from the high-power electronic component <NUM>. Because the heat pipes are generally physically attached to the high-power electronic component <NUM>, the heat that is generated by the high-power electronic component <NUM> is transferred to the heat pipes <NUM>, which then transfers this heat out of the inner housing <NUM>. Because of this, the hot air that moves away from the low-power electronic components 22A, 22B is not heated by the high-power electronic component <NUM>, and instead cools down as it moves away from the low-power electronic components 22A, 22B.

<FIG> shows a transparent side cross-sectional view of one implementation of the edge server <NUM>. In this implementation, the edge server <NUM> includes multiple first heat sinks <NUM> that are positioned between a low-power electronic component <NUM> and a top side 36A of the outer housing <NUM>. The edge server <NUM> also includes a high-power electronic component <NUM>. As shown, the inner housing <NUM> is positioned within the outer housing <NUM> so as to define an air channel <NUM>. In the implementation of <FIG>, the inner housing <NUM> is positioned within the outer housing <NUM> so as to allow air to flow adjacent to the top side 36A of the outer housing <NUM>, but prevent air from flowing adjacent to a bottom side 36B of the outer housing <NUM>. The flowing air is also prevented from flowing adjacent to a first end 38A of the outer housing <NUM>, and is allowed to flow adjacent to a second end 38B of the outer housing <NUM>.

In some implementations, the inner housing <NUM> prevents the air from flowing adjacent to the first end 38A of the outer housing <NUM>. In the implementation illustrated in <FIG>, a blocking component <NUM> is positioned between the inner housing <NUM> and the outer housing <NUM> to prevent air from flowing adjacent to the first end 38A of the outer housing <NUM>. The air channel <NUM>, as shown in <FIG>, thus has an L-shape. In other implementations, however, the air channel <NUM> could have a generally linear shape, a U-shape, a curved shape, an irregular shape, or any other suitable shape.

The first air vent 16A is disposed in the outer housing <NUM> at the first end 20A of the air channel <NUM>. The second air vent 16B is disposed in the outer housing at the second end 20B of the air channel <NUM>. The second fan 34B is disposed in the air channel <NUM> to cause air to enter the air channel <NUM> through the first air vent 16A, and exit the air channel <NUM> through the second air vent 16B.

The edge server <NUM> in <FIG> includes two different first heat sinks <NUM>. The inner portion 26A of each first heat sink <NUM> is disposed within the inner housing <NUM>, while the outer portion 26B of each first heat sink <NUM> is disposed outside of the inner housing <NUM> in the air channel <NUM>. The first fan 34A positioned within the inner housing <NUM> assists in transferring heat generated by the low-power electronic component <NUM> to the inner portions 26A of the first heat sinks <NUM>. The second heat sink <NUM> is also disposed outside of the inner housing <NUM> in the air channel <NUM>. A first end 32A of each of the heat pipes <NUM> is positioned outside of the inner housing <NUM> and is thermally coupled to the second heat sink <NUM>. A second end 32B of the heat pipes <NUM> is positioned within the inner housing <NUM> and is thermally coupled to the high-power electronic component <NUM> to thereby transfer heat generated by the high-power electronic component <NUM> out of the inner housing <NUM> to the second heat sink <NUM>.

As the air flows through the air channel <NUM>, the air flows through and/or past the outer portion 26B of the first heat sink <NUM>, as well as the second heat sink <NUM>. The heat that is transferred to the outer portion 26B of the first heat sink <NUM> and the second heat sink <NUM> is thus removed by the flowing air, which transfers the heat out of the outer housing <NUM> as the air exits the air channel <NUM>.

<FIG> shows a transparent perspective view of another implementation of the edge server <NUM>. In this implementation, the edge server <NUM> includes multiple first heat sinks <NUM> that are positioned between the low-power electronic components 22A, 22B and the lateral sides 42A, 42B of the outer housing <NUM>. As shown in <FIG>, the low-power electronic components 22A, 22B are disposed in an inner housing (not shown), along with high-power electronic component <NUM>. Each of the first heat sinks <NUM> have an inner portion 26A positioned within the interior of the inner housing, and an outer portion 26B positioned exterior to the inner housing within the air channel. The edge server <NUM> in <FIG> also includes a first fan 34A positioned within the inner housing, and a second fan 34B positioned in the air channel along with a second heat sink <NUM>. First and second air vents 16A and 16B in the inner housing <NUM> are also provided so as to allow air to flow through the outer housing <NUM>.

Other implementations of the edge server <NUM> can have a different number of components and in a different arrangement as compared to the implementations illustrated in <FIG> and <FIG>. For example, the air channel <NUM> can have any suitable shape, or the outer housing <NUM> may have more than two air vents (the first air vent 16A and the second air vent 16B) defined in the outer housing <NUM>.

The edge server <NUM> illustrated in <FIG> can generally include any number or type of heat sinks, depending on the specific needs of the server. For example, an edge server <NUM> could include both a first heat sink <NUM> positioned above the low-power electronic component 22A as shown in <FIG>, and one or more first heat sinks <NUM> positioned to the sides of the low-power electronic components 22A, 22B as shown in <FIG>. In another example, different edge servers <NUM> may have different numbers of low-power electronic components and high-power electronic components. Any number of first heat sinks <NUM> and second heat sinks <NUM> can be used to satisfy the needs of any specific edge server <NUM>.

Heat sinks such as the second heat sink <NUM> are often used for high-power components that generate large amounts of heat. In some implementations, high-power components are components that consume about <NUM> Watts or more of energy. Because of the direct physical contact between these heat sinks and the high-power electronic components via the heat pipes, these types of heat sinks are generally better-equipped for removing the heat generating by high-power components.

Heat sinks such as the first heat sink <NUM> that gather heat due to the air circulation within the inner housing <NUM> can be used for lower-power components that do not generate as much heat as high-power components. In some implementations, low-power components are components that consume about <NUM> Watts or less of energy.

The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the invention. Furthermore, to the extent that the terms "including," "includes," "having," "has," "with," or variants thereof, are used in either the detailed description and/or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. Furthermore, terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Claim 1:
A server comprising:
an outer housing (<NUM>) defining a first air vent (16A) and a second air vent (16B); and
an inner housing (<NUM>) disposed within the outer housing (<NUM>) such that an air channel (<NUM>) is defined between the inner housing (<NUM>) and the outer housing (<NUM>), the air channel (<NUM>) having a first end (20A) and a second end (20B), the first air vent (16A) being positioned adjacent to the first end (20A) of the air channel (<NUM>) and the second air vent (16B) being positioned adjacent to the second end (20B) of the air channel (<NUM>), wherein the inner housing (<NUM>) is water-tight and particulate-tight,
characterized by further comprising:
one or more high-power electronic components (<NUM>) positioned in the inner housing (<NUM>);
one or more low-power electronic components (<NUM>) positioned in the inner housing (<NUM>), the one or more high-power electronic components (<NUM>) generating more heat than the one or more low-power electronic components (<NUM>);
a first heat sink (<NUM>) positioned at least partially in the air channel (<NUM>) such that the first heat sink (<NUM>) is in thermal exchange with the one or more low-power electronic components (<NUM>) in the inner housing (<NUM>);
a second heat sink (<NUM>) disposed in the air channel (<NUM>) outside of the inner housing (<NUM>);
one or more heat pipes (<NUM>) extending through the inner housing (<NUM>), a first end (32A) of the one or more heat pipes (<NUM>) being coupled to the second heat sink (<NUM>), and a second end (32B) of the one or more heat pipes (<NUM>) being coupled to the one or more high-power electronic component (<NUM>) within the inner housing (<NUM>);
and
a second fan (34B) positioned and configured to cause air to enter the air channel (<NUM>) via the first air vent (16A), flow through at least a portion of the air channel (<NUM>), and through at least a portion of the second heat sink (<NUM>), and exit the air channel (<NUM>) via the second air vent (16B); and
a first fan (34A) positioned within the inner housing (<NUM>), wherein the one or more low-power electronic components (<NUM>) is positioned between the one or more high-power electronic components (<NUM>) and the first fan (34A).