JPWO2018222618A5 - - Google Patents

Description

(INCORPORATION BY REFERENCE TO ANY PRIORITY APPLICATION)
Any and all applications identified with a foreign or domestic priority claim in an Application Data Sheet filed with this application are subject to 37 C.F.R. F. R. Incorporated herein by reference under §1.57.

The field relates to power supply assemblies with fan assemblies for electronic devices, particularly portable electronic devices.

In various types of portable electronic devices, it can be difficult to adequately dissipate heat generated by on-board electronics and/or power supplies (eg, batteries). Additionally, some heat dissipating components may be subject to high mechanical loading conditions that may cause cyclic or other mechanical stress and/or failure. It may be desirable to improve heat dissipation in electronic devices and/or improve the mechanical performance of such devices.

For example, in some embodiments, modern computing and display technologies are facilitating the development of systems for virtual and/or augmented reality experiences in which digitally reproduced images or portions thereof are , are presented to the user in a manner in which they appear or can be perceived as real. Virtual reality or "VR" scenarios typically involve presentation of digital or virtual image information without transparency to other actual real-world visual inputs, augmented reality or "AR" scenarios typically involve the presentation of digital or virtual image information as an extension to the visualization of the real world around the user.

Some VR or AR systems may include portable electronic devices that may be subject to thermal and/or mechanical loads. Thus, there remains a continuing need for improved thermal and/or mechanical solutions for portable electronic devices, including those used in conjunction with VR or AR systems.

In some embodiments, an electronic device is disclosed. An electronic device can comprise a housing comprising a first compartment in which a first electronic component is located. The housing can comprise a second compartment in which a second electronic component is placed, one or both of the first and second electrical components in electrical communication with another component of the electronic device . The housing can comprise a connecting portion extending between the first compartment and the second compartment. The first compartment can be separated from the second compartment by a gap at a location spaced from the connecting portion to provide thermal isolation between the first and second compartments.

In some embodiments, a portable electronic device is disclosed. A portable electronic device includes a housing and a battery disposed within the housing, the battery providing power for at least a portion of the portable electronic device. A portable electronic device includes electronic components disposed within a housing for operating the portable electronic device. A portable electronic device includes a heat-reducing assembly that includes a frame assembly. The frame assembly may comprise a shaft assembly having a first end and a second end opposite the first end, the first and second ends supported by the frame assembly. be. The frame assembly may include an impeller having fan blades coupled with a hub, the hub comprising an impeller coupled with the shaft assembly for rotation within the housing about the longitudinal axis of the shaft assembly. can. Loads transverse to the longitudinal axis of the shaft assembly can be controlled by a frame assembly at the second end of the shaft assembly. The heat-reducing assembly removes heat generated from one or both of the battery and electronic components.

In some embodiments, the housing comprises a first enclosure and a second enclosure, wherein the electronic components and the heat mitigating assembly are located within the first enclosure and the battery is located within the second enclosure. placed in

In some embodiments, a fan assembly is disclosed. The fan assembly has a first support frame, a first end coupled to the first support frame, and a second end spaced apart from the first end. A shaft assembly and a second support frame coupled to the first support frame and disposed at or across a second end of the shaft assembly may be included. The impeller is a fan blade coupled with a hub disposed over the shaft assembly for rotation between the first and second support frames about a longitudinal axis. , can have fan blades. Lateral loads on the shaft assembly can be controlled by the first and second support frames.

In some embodiments, the second support frame comprises an airflow opening centered about a longitudinal axis extending between the first end and the second end of the shaft assembly. . A shaft support may be coupled with the second end of the shaft assembly, the shaft support being rigidly attached to the second support frame across the airflow opening. The shaft support may be supported in separate first and second portions of the second support frame, the separate first and second portions spaced about the perimeter of the airflow opening. be. The first portion of the second support frame is generally opposite the airflow opening to the second portion of the second support frame. The shaft support is positioned within a rotational position of the airflow opening corresponding to maximum airflow when the impeller is operating. The shaft support includes an elongated member between its first and second ends, the elongated member having a wing shape. The shaft support includes an elongated member between its first and second ends, the elongated member having a variable width along its length. The shaft support includes an elongated member between its first and second ends, the elongated member having a variable thickness along its length. The shaft assembly comprises a first shaft portion rotationally fixed to the first support frame and a second portion rotationally fixed to the impeller, the second portion of the shaft assembly. Rotatable over the free end of the first shaft portion. The shaft assembly comprises an elongated member having a first end located on the first side of the impeller and a second end located on the second side of the impeller; The side is opposite the first side. The concave member can be coupled with the second support frame and configured to rotationally support the second end of the elongated member. An additional concave member may be coupled with the first support frame and configured to rotationally support the first end of the elongated member. The airflow path of the fan assembly is between an airflow opening centered about the longitudinal axis and a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis. extend to An axis non-parallel to the longitudinal axis is disposed along the radially extending axis of the impeller substantially perpendicular to the longitudinal axis.

The fan assembly is an enclosure supporting a shaft assembly at a first end, the shaft having a second end opposite the first end, and fan blades coupled to the hub. and the hub may include an impeller coupled with the shaft for rotation within the enclosure about the longitudinal axis. Lateral loads on the shaft assembly can be controlled by an enclosure at the second end of the shaft assembly.

The fan assembly may comprise a housing comprising a shaft support and a shaft assembly supported by the shaft support. An impeller may be disposed within the housing and coupled with the shaft assembly, the impeller configured to rotate about the longitudinal axis of the shaft assembly. The first airflow opening can be arranged about the longitudinal axis. A second airflow opening having a face can be centered about an axis that is non-parallel to the longitudinal axis. An airflow path of the fan assembly may extend between the first airflow opening and the second airflow opening. The shaft support may comprise an elongated member extending across at least a portion of the first airflow opening, the elongated member facilitating at least airflow through the first airflow opening. Angularly positioned across the first airflow opening at angles to non-parallel axes that allow for maxima.

In some embodiments, the angles for non-parallel axes are acute. In some embodiments, the angle for non-parallel axes is in the range of -45° to 45°. In some embodiments, the angle for non-parallel axes is in the range of -30° to 30°.

In some embodiments, a method of manufacturing a fan assembly is disclosed. The method may include providing a fan assembly, the fan assembly including a housing and an impeller disposed within the housing and coupled with the shaft assembly, the shaft assembly having a longitudinal axis of an impeller configured to rotate about a center. A first airflow opening may be positioned about the longitudinal axis. The second airflow opening has a surface centered about an axis non-parallel to the longitudinal axis, and the fan assembly airflow path extends between the first airflow opening and the second airflow opening. extends between The method comprises the steps of calculating an airflow profile through the fan assembly and, based on the calculation, providing a shaft support to support an end of the shaft assembly, the shaft support comprising a first comprising an elongated member extending across at least a portion of the airflow opening of the .

In some embodiments, based on the calculation, the method moves the first airflow opening at an angle with respect to the non-parallel axes that allows at least a maximum of airflow through the first airflow opening. Angularly positioning the elongate member at least partially transversely may be included. In some embodiments, the angularly positioning step comprises orienting the angle to the non-parallel axis at an acute angle. In some embodiments, the angularly positioning comprises orienting the non-parallel axes at an angle within the range of -45° to 45°. In some embodiments, the angularly positioning comprises orienting the non-parallel axes within the range of -30° to 30°.

Details of one or more implementations of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will be apparent from the description, drawings, and claims. Neither this summary nor the following detailed description is intended to define or limit the scope of the inventive subject matter.
This specification also provides the following items, for example.
(Item 1)
an electronic device,
A housing, the housing comprising:
a first compartment in which a first electronic component is located;
a second compartment in which a second electronic component is located, wherein one or both of the first and second electrical components are in electrical communication with another component of the electronic device; ,
a connecting portion extending between the first and second compartments;
with a housing
with
An electronic device, wherein the first compartment is separated from the second compartment by a gap at a location spaced from the connecting portion to provide thermal isolation between the first and second compartments. .
(Item 2)
Electronic device according to item 1, wherein the first electronic component comprises a processor.
(Item 3)
Electronic device according to item 1, wherein the second electronic component comprises a power supply.
(Item 4)
4. The electronic device of item 3, wherein the power supply comprises a battery.
(Item 5)
2. The electronic device of item 1, wherein the first compartment, the second compartment and the connection portion are filled with gas.
(Item 6)
Electronic device according to item 1, wherein the connecting part comprises a channel between the first compartment and the second compartment.
(Item 7)
7. Electronic device according to item 6, wherein the channel has a lateral cross-sectional area smaller than the cross-sectional area of the first compartment taken along a direction parallel to the maximum dimension of the first compartment.
(Item 8)
Electronic device according to item 1, wherein the electronic device comprises an augmented reality device.
(Item 9)
9. Electronic device according to item 8, further comprising a connector configured to connect to a headpiece worn by a user.
(Item 10)
2. Electronic device according to item 1, wherein the first electronic component is in electrical communication with the second electronic component.
(Item 11)
The electronic device of item 1, further comprising a clip positioned in a gap between the first compartment and the second compartment.
(Item 12)
A portable electronic device,
a housing;
a battery disposed within the housing, the battery providing power for at least a portion of the portable electronic device;
electronic components for operating the portable electronic device, the electronic components disposed within the housing;
A heat abatement assembly comprising a frame assembly,
A shaft assembly, said shaft assembly having a first end and a second end opposite said first end, said first and second ends connecting said frame a shaft assembly supported by the assembly;
an impeller having fan blades coupled to a hub, the hub coupled to the shaft assembly for rotation within the housing about the longitudinal axis of the shaft assembly;
a heat mitigation assembly, and
with
a load transverse to the longitudinal axis of the shaft assembly is controlled by the frame assembly at the second end of the shaft assembly;
A portable electronic device, wherein the heat-reducing assembly removes heat generated from one or both of the battery and the electronic component.
(Item 13)
The housing comprises a first enclosure and a second enclosure, wherein the electronic components and the heat mitigating assembly are disposed within the first enclosure and the battery is within the second enclosure. 13. A power supply assembly according to item 12, arranged.
(Item 14)
The shaft assembly comprises a first shaft portion connected to a first frame of the frame assembly and a second shaft portion connected to a second frame of the frame assembly, wherein the first and second 13. The power supply assembly of item 12, wherein two shaft portions are at least partially disposed on opposite sides of the hub.
(Item 15)
A fan assembly,
a first support frame;
a shaft assembly, said shaft assembly having a first end coupled with said first support frame and a second end spaced apart from said first end; a shaft assembly;
a second support frame coupled to the first support frame and disposed at or across a second end of the shaft assembly; ,
An impeller having fan blades coupled with a hub disposed over the shaft assembly for rotation between the first and second support frames about a longitudinal axis. with the impeller
with
A fan assembly wherein lateral loads on said shaft assembly are controlled by said first and second support frames.
(Item 16)
16. Clause 15, wherein said second support frame comprises an airflow opening disposed about said longitudinal axis extending between said first and second ends of said shaft assembly. Fan assembly as described.
(Item 17)
to item 16, further comprising a shaft support coupled with the second end of the shaft assembly, the shaft support rigidly attached to the second support frame across the airflow opening; Fan assembly as described.
(Item 18)
The shaft support is supported in separate first and second portions of the second support frame, the separate first and second portions being spaced about the perimeter of the airflow opening. 18. The fan assembly of item 17, wherein the fan assembly is
(Item 19)
19. The fan assembly of item 18, wherein the first portion of the second support frame is generally on the opposite side of the airflow opening to the second portion of the second support frame.
(Item 20)
18. A fan assembly according to item 17, wherein the shaft support is arranged in a rotational position of the airflow opening corresponding to maximum airflow when the impeller is operating.
(Item 21)
18. A fan assembly according to item 17, wherein the shaft support comprises an elongated member between its first and second ends, said elongated member having a wing shape.
(Item 22)
18. A fan assembly according to item 17, wherein said shaft support comprises an elongated member between its first and second ends, said elongated member having a variable width along its length. .
(Item 23)
18. Fan assembly according to item 17, wherein the shaft support comprises an elongated member between its first and second ends, said elongated member having a variable thickness along its length. .
(Item 24)
The shaft assembly comprises a first shaft portion rotationally fixed to the first support frame and a second portion rotationally fixed to the impeller, wherein the second portion comprises the 16. A fan assembly according to item 15, rotatable over the free end of the first shaft portion of the shaft assembly.
(Item 25)
The shaft assembly includes an elongate member having a first end located on a first side of the impeller and a second end located on a second side of the impeller. 16. The fan assembly of item 15, wherein the second side is opposite the first side.
(Item 26)
26. The fan assembly of item 25, further comprising a concave member coupled with the second support frame and configured to rotationally support the second end of the elongate member.
(Item 27)
27. The fan assembly of Claim 26, further comprising an additional concave member coupled with said first support frame and configured to rotationally support a first end of said elongated member.
(Item 28)
The airflow path of the fan assembly comprises an airflow opening centered about the longitudinal axis and a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis. 17. The fan assembly of item 16, extending between.
(Item 29)
29. Fan assembly according to item 28, wherein the axis non-parallel to the longitudinal axis is arranged along the radially extending axis of the impeller substantially perpendicular to the longitudinal axis.
(Item 30)
A fan assembly,
an enclosure supporting a shaft assembly at a first end, the shaft having a second end opposite said first end;
An impeller having fan blades coupled with a hub, said hub coupled with said shaft for rotation within said enclosure about a longitudinal axis.
with
A fan assembly, wherein lateral loads on said shaft assembly are controlled by said enclosure at a second end of said shaft assembly.
(Item 31)
A fan assembly,
a housing, said housing comprising a shaft support and a shaft assembly supported by said shaft support;
an impeller disposed within the housing and coupled with the shaft assembly, the impeller configured to rotate about a longitudinal axis of the shaft assembly;
a first airflow opening centered about the longitudinal axis;
a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis;
an airflow path of the fan assembly extending between the first airflow opening and the second airflow opening;
with
The shaft support includes an elongated member extending across at least a portion of the first airflow opening, the elongated member facilitating at least air flow through the first airflow opening. A fan assembly angularly positioned across said first airflow opening at an angle to said non-parallel axes that allows for a maximum value.
(Item 32)
32. A fan assembly according to item 31, wherein the angles with respect to the non-parallel axes are acute angles.
(Item 33)
33. A fan assembly according to item 32, wherein the angle with respect to said non-parallel axes is in the range of -45° to 45°.
(Item 34)
34. A fan assembly according to item 33, wherein the angle with respect to said non-parallel axes is in the range of -30° to 30°.
(Item 35)
A method of manufacturing a fan assembly, the method comprising:
To provide a fan assembly, the fan assembly comprising:
a housing;
an impeller disposed within the housing and coupled with a shaft assembly, the impeller configured to rotate about a longitudinal axis of the shaft assembly;
a first airflow opening centered about the longitudinal axis;
a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis;
wherein an airflow path of the fan assembly extends between the first airflow opening and the second airflow opening;
calculating an airflow profile through the fan assembly;
Based on the calculation, providing a shaft support to support an end of the shaft assembly, the shaft support extending across at least a portion of the first airflow opening. comprising an elongated member that resides in
A method, including
(Item 36)
at least partially across the first airflow opening at an angle to the non-parallel axis that allows at least a maximum of airflow through the first airflow opening based on the calculation; 36. The method of item 35, further comprising angularly positioning the elongated member by
(Item 37)
37. The method of item 36, wherein angularly positioning comprises orienting at an acute angle to said non-parallel axes.
(Item 38)
38. The method of item 37, wherein angularly positioning comprises orienting an angle with respect to said non-parallel axes within the range of -45° to 45°.
(Item 39)
39. The method of item 38, wherein angularly positioning comprises orienting at an angle with respect to said non-parallel axes within the range of -30° to 30°.

FIG. 1 depicts an illustration of an augmented reality scenario involving certain virtual reality objects and certain physical objects viewed by a person.

2A-2D schematically illustrate examples of wearable systems, according to various embodiments. 2A-2D schematically illustrate examples of wearable systems, according to various embodiments. 2A-2D schematically illustrate examples of wearable systems, according to various embodiments. 2A-2D schematically illustrate examples of wearable systems, according to various embodiments.

FIG. 3A is a schematic front plan view of a portion of a portable electronic device that may form part of a wearable system, including local processing and data modules, according to one embodiment.

3B is a schematic right side view of the local processing and data module of FIG. 3A.

Figure 3C is a schematic rear plan view of the local processing and data module shown in Figures 3A-3B.

FIG. 3D is a schematic cross-sectional side view of the local processing and data module shown in FIGS. 3A-3C.

Figure 4A is a schematic perspective exploded view of a first enclosure of a local processing and data module, according to one embodiment.

Figure 4B is a schematic perspective exploded view of a local processing and data module, according to another embodiment.

FIG. 4C is a schematic perspective partially exploded view of a fan assembly mounted on a first heat spreader, according to various embodiments.

FIG. 4D is a schematic partially exploded view of the fan assembly, first heat spreader, heat transfer path, and heat sink.

FIG. 4E illustrates a heat map of the assembled heat spreader, heat transfer path, and heat sink during operation of the fan assembly.

FIG. 5 is a schematic side cross-sectional view of a fan assembly that may be used with the local processing and data modules described herein.

FIG. 6 is a rear plan view of a fan assembly according to various embodiments disclosed herein.

FIG. 6A is a schematic top plan view of an elongated member having a substantially linear profile along a plane defined substantially parallel to the plane of rotation of the impeller;

Figure 6B is a schematic top plan view of an elongated member having a first curved region and a second curved region, according to one embodiment.

FIG. 6C is a schematic top plan view of an elongated member having a first curved region and a second curved region according to another embodiment;

Figure 6D is a schematic side view of an elongated member having a generally planar or straight profile when viewed along a plane defined generally transverse to the plane shown in Figures 6A-6C.

FIG. 6E is a schematic side view of an elongated member having a non-linear or shaped profile when viewed along a plane defined generally transverse to the plane shown in FIGS. 6A-6C, according to some embodiments; It is a diagram.

FIG. 6F is a schematic side view of an elongated member having a non-linear or curved profile when viewed along a plane defined generally transverse to the plane shown in FIGS. 6A-6C, according to another embodiment; is.

7 is a schematic side cross-sectional view of the fan assembly of FIG. 6; FIG.

FIG. 8 is a rear plan view of a fan assembly according to another embodiment;

FIG. 9 is a schematic cross-sectional side view of fan assembly 111, according to another embodiment.

FIG. 10 is a schematic side cross-sectional view of a fan assembly, according to another embodiment;

FIG. 10A is a schematic side view of a fan assembly including a shaft assembly operably coupled to an impeller assembly using a bushing, according to some embodiments;

FIG. 10B is a schematic side view of a fan assembly including a shaft assembly operatively coupled to an impeller assembly using a bushing, according to another embodiment;

FIG. 10C is a schematic side view of a fan assembly comprising a shaft assembly having first and second shaft portions operably coupled with an impeller, according to another embodiment;

FIG. 10D is a schematic side view of a fan assembly comprising a shaft assembly having first and second shaft portions operably coupled with an impeller, according to another embodiment;

FIG. 11 is a plan view of the flow pattern within the fan assembly before the elongated member is attached to the fan assembly;

FIG. 12 is a schematic perspective view of the flow pattern in and around the fan assembly after the elongated member has been installed in the desired orientation relative to the fan assembly;

Figure 13A is a schematic rear left perspective view of an electronic device, according to one embodiment.

13B is a schematic front right perspective view of the electronic device of FIG. 13A.

Figure 13C is a schematic front plan view of the electronic device of Figures 13A-13B.

Figure 13D is a schematic rear plan view of the electronic device of Figures 13A-13C.

Figure 13E is a schematic right side view of the electronic device of Figures 13A-13D.

Figure 13F is a schematic left side view of the electronic device of Figures 13A-13E.

Figure 13G is a schematic top plan view of the electronic device of Figures 13A-13F.

Figure 13H is a schematic bottom plan view of the electronic device of Figures 13A-13G.

FIG. 14A is a side view schematic heat transfer map of the electronic device of FIGS. 13A-13H during operation of the electronic device.

14B is a schematic top view of the heat transfer map of FIG. 14A.

FIG. 15A is a schematic rear left perspective view of an electronic device, according to one embodiment of the present design.

15B is a schematic front right perspective view of the electronic device of FIG. 15A.

Figure 15C is a schematic front plan view of the electronic device of Figures 15A-15B.

Figure 15D is a schematic rear plan view of the electronic device of Figures 15A-15C.

Figure 15E is a schematic right side view of the electronic device of Figures 15A-15D.

Figure 15F is a schematic left side view of the electronic device of Figures 15A-15E.

Figure 15G is a schematic top plan view of the electronic device of Figures 15A-15F.

Figure 15H is a schematic bottom plan view of the electronic device of Figures 15A-15G.

Throughout the drawings, reference numbers may be reused to indicate correspondence between referenced elements. The drawings are provided to illustrate exemplary embodiments described herein and are not intended to limit the scope of the disclosure.

Various embodiments disclosed herein relate to portable (eg, wearable) electronic devices. For example, in FIG. 1, an augmented reality scene 4 is depicted in which a user of AR technology sees a real-world park-like setting 6 featuring people, trees, buildings in the background, and a concrete platform 1120 . In addition to these items, users of AR technology can also "see" a robot statue 1110 standing on a real-world platform 1120 and a flying cartoon-like avatar character 2 that looks like an anthropomorphic bumblebee. , but these elements 2, 1110 do not exist in the real world. At least element 2, 1110, can be provided to the user, at least in part, by a portable (eg, wearable) electronic device disclosed herein. In conclusion, the human visual perceptual system is highly complex, and the VR or AR system facilitates a comfortable, natural, and rich presentation of virtual image elements among other virtual or real-world image elements. Producing technology is difficult.

For example, head-mounted AR displays (or helmet-mounted displays or smart glasses) are typically at least loosely coupled to the user's head, and therefore move as the user's head moves. If a user's head movement is detected by the display system, the displayed data can be updated to account for head changes.

As an example, if a user wearing a head-mounted display views a virtual representation of a three-dimensional (3D) object on the display and walks around the area in which the 3D object appears, the 3D object is are re-rendered each time, giving the user the perception that they are walking around an object that occupies real space. When head-mounted displays are used to present multiple objects in a virtual space (e.g., a rich virtual world), head pose measurements (e.g., the location and orientation of the user's head) are , can be used to re-render the scene and match the end-user's dynamically changing head location and orientation to provide increased immersion within the virtual space.

In AR systems, the detection or computation of head pose can facilitate the display system to render virtual objects such that they appear to occupy space in the real world in a manner that is meaningful to the user. In addition, the detection of the position and/or orientation of real objects such as a user's head or a handheld device (which may also be referred to as a "totem") associated with an AR system, a tactile device, or other real physical objects It may also help the display system present display information to the user, allowing the user to efficiently interact with certain aspects of the AR system. As the user's head moves around in the real world, the virtual object may be re-rendered as a function of head pose such that the virtual object appears to remain stable with respect to the real world. At least for AR applications, placement of virtual objects in spatial relation to physical objects (e.g., presented to appear spatially close to physical objects in two or three dimensions) is not a trivial problem. Sometimes. For example, head movements can significantly complicate placement of virtual objects within views of the surrounding environment. This is true regardless of whether the view is captured as an image of the surrounding environment and then projected or displayed to the end user, or whether the end user perceives the view of the surrounding environment directly. For example, head movement is likely to change the end user's field of view, which would likely require an update to where various virtual objects are displayed in the end user's field of view. Additionally, head movement can occur within a wide variety of ranges and speeds. Head movement speed can vary not only between different head movements, but also within or across a single head movement. For example, head movement velocity may initially increase (e.g., linearly or non-linearly) from a starting point and decrease as an end point is reached, some point between the start and end points of head movement. to get maximum speed. Fast head movements can even exceed the ability of a particular display or projection technology to render an image that appears to the end user as uniform and/or smooth motion.

Head tracking accuracy and latency (e.g., the elapsed time between the time the user moves their head and the time the image is updated and displayed to the user) present challenges for VR and AR systems. ing. In particular, for display systems that fill a substantial portion of the user's field of view with virtual elements, head tracking is highly accurate, updating the light delivered by the display to the user's visual system from the first detection of head movement. It would be advantageous if the overall system latency to . If the latency is long, the system can cause a mismatch between the user's vestibular and visual perceptual systems, creating user perception scenarios that can lead to motion sickness or simulator sickness. If the system latency is high, the virtual object's apparent location may appear unstable during high speed head movements.

In addition to head mounted display systems, other display systems may also benefit from accurate and low latency head pose detection. These include head-tracking display systems in which the display is not attached to the user's body, but mounted, for example, on a wall or other surface. Head-tracking displays act like windows on the scene, and as the user moves their head relative to the "window," the scene is re-rendered to match the user's changing viewpoint. be. Other systems include head-mounted projection systems, in which a head-mounted display projects light onto the real world.

Additionally, the AR system may be designed to interact with the user to provide a realistic augmented reality experience. For example, multiple users may play a ball game using virtual balls and/or other virtual objects. One user may "catch" the virtual ball and throw the ball back to another user. In another embodiment, the first user may be provided with a totem (eg, a bat-like object communicatively coupled to the AR system) for hitting a virtual ball. In other embodiments, a virtual user interface may be presented to the AR user to allow the user to select one of many options. Users may use totems, tactile devices, wearable components, or simply touch a virtual screen to interact with the system.

Detecting the pose and orientation of the user's head and detecting the physical location of real objects in space enables AR systems to display virtual content in an effective and enjoyable manner. . However, while these capabilities are advantageous for AR systems, they can be difficult to achieve. In other words, the AR system recognizes the physical location of a real object (e.g., a user's head, totem, tactile device, wearable component, user's hand, etc.) and displays the physical coordinates of the real object to the user. must be correlated to virtual coordinates corresponding to one or more virtual objects associated with it. This generally requires highly accurate sensors and sensor recognition systems that track the position and orientation of one or more objects at a high rate. Current approaches cannot provide location with satisfactory speed or accuracy specifications.

Therefore, there is a need for better localization systems in the context of AR and VR devices. In addition, constant and/or high-speed movement of users can introduce various other problems into the electrical, thermal, and/or mechanical systems of such AR and/or VR devices.

Referring to Figures 2A-2D, some common component options are illustrated. In the detailed description section, following the discussion of FIGS. 2A-2D, various systems, subsystems, and components are described for the purpose of providing a high quality and pleasingly perceived display system for human VR and/or AR. Presented to deal with.

As shown in FIG. 2A, an AR system user 60 is depicted wearing a head-mounted component 58 featuring a frame 64 structure coupled to a display system 62 positioned in front of the user's eyes. be. A speaker 66 is coupled to the frame 64 in the depicted configuration and positioned adjacent to the user's ear canal (in one embodiment, another speaker, not shown, is positioned adjacent to the user's other ear canal and is stereo / provide shapeable sound control). The display 62 is operably coupled 68, such as by wired leads or wireless connectivity, to a local processing and data module 70, which is fixedly attached to a frame 64, helmet or helmet as shown in the embodiment of FIG. 2B. Fixedly attached to the hat 80, built into the headphones, removably attached to the torso 82 of the user 60 in a backpack-like configuration as shown in the embodiment of FIG. 2C, or shown in the embodiment of FIG. 2D. It may be mounted in a variety of configurations, such as removably attached to the buttocks 84 of the user 60 in a belt-tied configuration.

The local processing and data module 70 may comprise a power efficient processor or controller and digital memory such as flash memory, both of which include: a) image capture devices (such as cameras), microphones, inertial measurement units, accelerometers; data captured from sensors, such as compasses, GPS units, wireless devices, and/or gyroscopes, which may be operably coupled to frame 64; It may be utilized to assist in processing, caching, and storing data that may be obtained and/or processed using remote processing module 72 and/or remote data repository 74 for transit. The local processing and data module 70 is configured such that the remote modules 72, 74 are operably coupled to each other and available as resource resources to the local processing and data module 70, such as via a wired or wireless communication link. , may be operably coupled 76 , 78 to these remote processing modules 72 and remote data repositories 74 .

In one embodiment, remote processing module 72 may comprise one or more relatively powerful processors or controllers configured to analyze and process data and/or image information. In one embodiment, remote data repository 74 may comprise a relatively large scale digital data storage facility, which may be available through the Internet or other networking configuration in a "cloud" resource configuration. In one embodiment, all data is stored and all calculations are performed in the local processing and data module, allowing fully autonomous use from any remote module.
Thermal mitigation within local processing and data modules

FIG. 3A is a schematic front plan view of local processing and data module 70, according to one embodiment. 3B is a schematic right side view of the local processing and data module 70 of FIG. 3A. As shown in FIGS. 3A and 3B, the local processing and data module 70 comprises a first enclosure 100 and a second enclosure 101 mechanically connected to the first enclosure 100, housing 75. can be provided. The second enclosure 101 can be fluidly coupled with the first enclosure 100 in some embodiments. The first enclosure 100 and the second enclosure 101 are coupled to provide thermal isolation or isolation therebetween, e.g., a gap (such as an air gap) between the enclosures 100, 101 provides improved thermal isolation therebetween. can be provided to Thus, in some embodiments, the first enclosure has a second enclosure 101 at a location separated from the first compartment by a gap that provides thermal isolation between the first and second enclosures 100,101. A first compartment can be provided that is separated from a second compartment of the. However, as discussed further below, in various embodiments at least a portion of the heat generated within the second enclosure 101 can flow to the first enclosure 100 .

The first enclosure 100 can have a front side 102 and a rear side 103 opposite the front side 102 . A second enclosure 101 can be coupled with the rear side 103 of the first enclosure. A connecting portion, comprising a channel 119, can extend between the first and second enclosures 100,101. A connecting portion channel 119 may connect an internal chamber or cavity defined within the first enclosure 100 and an internal chamber or cavity defined within the second enclosure 101 . As described herein, in some embodiments the channel 119 is configured to accommodate one or more electrical connectors extending between components within the first and second enclosures 100, 101. Can be sized. Additionally, the channels 119 may provide heat transfer by fluid communication or other means between the first and second enclosures 100 , 101 to improve heat dissipation within the housing 75 , for example. In other embodiments, the channel 119 of the connecting portion (and/or the physical air gap separating the enclosures 100, 101) provides a thermal gap between the first and second enclosures 100, as described herein. , 101 to provide thermal isolation between the enclosures 100,101. In the embodiment of FIGS. 3A-3B, each enclosure 100, 101 is disc-shaped with internal chambers or cavities shaped to contain various electronic devices, heat-reducing features, and/or power source devices. A structure can be provided. In other embodiments, the enclosures 100, 101 can be shaped differently.

FIG. 3C is a schematic rear plan view of the local processing and data module 70 shown in FIGS. 3A-3B. As shown in FIG. 3C, the enclosure 75 (eg, on the periphery of the first enclosure 100) is configured to allow one or more user controls configured to allow the user to control the operation of the system. An interface 106 may be included. For example, in some embodiments, user interface 106 may include buttons or other types of interfaces to control and/or mute the volume of the AR or VR experience. Other control mechanisms are also possible through interface 106 . Additionally, local processing and data module 70 may include one or more input/output (I/O) ports 107 to provide input and/or output data. For example, I/O port 107 may comprise an audio port.

Also, the local processing and data module 70 is configured to allow gas (e.g., air) to enter the enclosure 75, e.g., at locations on the periphery of the first enclosure 100. The above inlet ports 104a, 104b can be provided. Local processing and data module 70 also includes one or more exhaust ports 105 to allow gas (e.g., air) to exit enclosure 75, e.g., at locations on the periphery of first enclosure 100. can do. Thus, air can flow into the enclosure 100 through the inlet ports 104 a , 104 b and exit the enclosure 100 through the exhaust port 105 . Ports 104 a , 104 b may comprise one or an array of holes within enclosure 100 at spaced locations on the periphery of enclosure 100 . Port 105 may include one or an array of holes in enclosure 100 . As discussed further below, one fan outlet is provided in some embodiments, and in such embodiments a single port 105 is provided for fluid communication out of housing 100. can be provided. Ports 105 may be located on multiple peripheral sides of enclosure 100 in some embodiments. Ports 104 may be located on multiple peripheral sides of enclosure 100 . As described herein, airflow through enclosure 100 can beneficially transport heat away from local processing and data modules 70 .

FIG. 3D is a schematic cross-sectional side view of the local processing and data module 70 shown in FIGS. 3A-3C. As previously mentioned, the local processing and data module 70 may include one or more electronic components 109 (schematically illustrated herein in block form) such as processors, memory dies, sensors, and the like. In the embodiment of FIG. 3D, the electronic components 109 can be placed in a chamber or first compartment of the first enclosure 100 of the housing. As shown, the electronic components 109 can be arranged in a relatively low profile and relatively small lateral footprint. Although the illustrated electronic components 109 are shown at or near the front side 102 of the first enclosure 100, it should be noted that additional electronic components may be provided at any suitable location within the enclosures 100, 101. be understood.

Incorporating multiple electronic components 109 into enclosure 100 can generate substantial heat, which can be uncomfortable for users and/or damage system components if not properly cooled. Thus, in various embodiments, a heat mitigating assembly 110 is provided in the enclosure (e.g., within the first enclosure 100) to remove heat generated by the electronic components 109 during operation and reduce the temperature of the enclosure. can be maintained at a comfortable and/or effective level. In the illustrated embodiment, heat-reducing assembly 110 is positioned behind electronic component 109 . In the view depicted in FIG. 3D, the heat-reducing assembly 110 can comprise a first heat spreader 112 positioned on a first side of the fan assembly 111 . The first heat spreader 112 can be located on the front side of the fan assembly 111 and is therefore sometimes referred to as the front heat spreader. As described herein, the first heat spreader 112 is mechanically and mechanically connected to the electronic component 109 so as to thermally conduct heat to the components of the heat sink or fan assembly 111 discussed below. can be thermally coupled. Fan assembly 111 blows or draws air in the vicinity of or across heat spreader 112 to move a heat transfer medium (eg, heated air or other heated gas) out of local processing and data module 70 . can be exhausted through the exhaust port 105 to

Local processing and data module 70 also includes additional electronic components (eg, on-board power supply module 118) within second enclosure 101 so that the user does not need to be tethered to a wired power supply; Power may be provided to the electronic components 109 within the first enclosure 100 . The power supply 118 shown in FIG. 3D can include, for example, one or more batteries. An on-board power supply may generate additional heat within the local processing and data module 70 . In some embodiments, fan assembly 111 transfers a heat transfer medium (eg, heated air or other heated gas) using, for example, channels 119 that provide fluid communication between enclosures 100, 101. It can be pulled into the first enclosure 100 from the second enclosure 101 . Accordingly, in various embodiments, heat-reducing assembly 110 can be configured to remove heat generated from one or both of battery (eg, power supply 118 ) and electronic component 109 . In various embodiments, the majority of heat removed from local processing and data module 70 may include heat generated by electronic components 109 .

FIG. 4A is a schematic perspective exploded view of the first enclosure 100 of the local processing and data module 70, according to one embodiment. As previously described with respect to FIGS. 3A-3D, electronics component 109 can be positioned within enclosure 100 in front of heat mitigation assembly 110 . Enclosure 100 may be structurally bounded or contained by connecting or mating front cover 108a and rear cover 108b. The front and back covers 108a, 108b, when connected, define a chamber or first compartment in which the electronics component 109 and the heat mitigation assembly 110 are located. Although FIG. 4A illustrates electronics components 109 and heat mitigation assembly 110 within enclosure 100 , it should be understood that additional components may be provided in first enclosure 100 .

As shown in FIG. 4A, the heat-reducing assembly 110 includes a base 115 that can support various components of the heat-reducing assembly 110 . For example, as shown in FIG. 4A, a first heat spreader 112 and heat transfer paths 117 (eg, heat pipes) can be mounted on or coupled to base 115 . However, in some embodiments, the assembly 110 is located at the base such that the first heat spreader 122 and the heat transfer path 117 can be positioned adjacent to or otherwise connected to the fan assembly 111 . 115 may not be included. Additionally, a heat sink 113 (eg, a metal plate or a finned stack of elements) can be mounted to or coupled to the base 115 . For example, the heat sink 113 can comprise an interlocking copper fin pattern, each fin in the range of 0.05 mm to 0.35 mm, such as in the range of 0.1 mm to 0.3 mm (several In embodiments, it has a thickness of about 0.2 mm). The fins can be spaced within the range of 0.25 mm to 2 mm, or within the range of 0.5 mm to 1.5 mm (in some embodiments about 1 mm). A second heat spreader 114 may be positioned on a second side of the fan assembly 111 . The second heat spreader 114 can be positioned on the rear side of the fan assembly 111 and is therefore sometimes referred to as the rear heat spreader. The first heat spreader 112 is thermally, optionally, mechanically, part or All can be combined. For example, in some embodiments, heat generated by electronic component 109 may be conducted to first heat spreader 112 using one or more thermal gap pads, which may comprise a thermally conductive elastomer. good. The thermal gap pad can create pressure between the heat spreader 112 and the component to improve thermal conductivity. Heat can be transferred from heat spreader 112 and/or electronic component 109 to heat sink 113 along heat transfer path 117 .

The fan assembly 111 drives or draws air over and/or around the first heat spreader 112, the heat transfer path 117, and/or the second heat spreader 114, the first enclosure 100 and /or the second enclosure 101 can be cooled. For example, incoming air A1 can be drawn into the first enclosure 100 by the fan assembly 111 via the inlet ports 104a, 104b. Fan assembly 111 may circulate cooling air A2 within first enclosure 100 over and/or around electronic component 109 to cool electronic component 109 . Cooling air A2 may, in some embodiments, include ambient air that is drawn into enclosure 100 without additional cooling. Further, as shown in FIG. 4A, fan assembly 111 can draw cooling air A3 into first enclosure 100 from second enclosure 101 via channel 119, for example. Thus, in the illustrated embodiment, the electronic component 109 can be cooled by cooling air A2 circulated within the enclosure 100. FIG.

In some embodiments, the battery or power supply 118 may also be cooled using cooling air A3 drawn into the first enclosure 100 from the second enclosure 101 . Heat from the second enclosure 101 can also, in some embodiments, be conducted into the first enclosure 100 by thermal conductors and dissipated by the air flow described herein. In some embodiments, as described herein, a connection portion, including channel 119, reduces or reduces the flow of heat from first enclosure 100 to second enclosure 101 (or vice versa). An insulating gap can be provided to reduce it. Cooling airflows A2 and A3 may be drawn or drawn into airflow openings 129 formed in an interior portion (eg, a central portion) of fan assembly 111 . In some embodiments, for example, the cooling air A2 may pass laterally between the first heat spreader 112 or base 115 and the fan assembly 111 and through the opening 129 to the fan assembly 111. can enter. As described herein (see FIGS. 4C and 4E), air drawn through airflow openings 129 of fan assembly 111 is directed radially outward through outlet air openings 132 as exit airflow A4 to It can be ejected from the fan assembly 111 . Thus, in various embodiments, the airpath of the fan assembly 111 has airflow openings 129 arranged along the longitudinal axis L and planes arranged about axes non-parallel to the longitudinal axis L. , and the exit airflow opening 132 . For example, the exit airflow openings 132 can be arranged radially outward (eg, generally perpendicular to the longitudinal axis L). A radially exiting airflow A4 is directed across the heat sink 113 and can drive the thermal energy stored in the heat sink 113 out of the enclosure 100 . Exhausted air A5 can be directed out of first enclosure 100 through exhaust port 105 to the outside environment, as shown in FIG. 4A.

FIG. 4B is a schematic perspective exploded view of local processing and data module 70, according to another embodiment. Unless otherwise noted, the local processing and data module 70 of FIG. 4B may be similar to the local processing and data module 70 of FIG. 4A. Unlike the embodiment of Figure 4A, only a single inlet port 104 and a single exhaust port 105 are shown in Figure 4B. As such, it should be appreciated that any suitable number of inlet ports 104 and/or outlet ports 105 may be provided to draw air into enclosure 100 and to exhaust air from enclosure 100 .

FIG. 4C is a schematic perspective partially exploded view of fan assembly 111 mounted on first heat spreader 112 . 4D is a schematic partially exploded view of fan assembly 111, heat spreader 112, heat transfer path 117, and heat sink 113. FIG. As shown in FIGS. 4A-4C, the electronic components 109 can be placed near the front cover 108a. The first heat spreader 112 can be placed on the back side of the electronic component, and the fan assembly 111 can be thermally coupled to the first heat spreader 112 and placed on the back side thereof. A first heat spreader 112 may be positioned between the electronic component 109 and the fan assembly 111 . Fan assembly 111 may be thermally coupled with first heat spreader 112 . In some embodiments, a gap may be placed between fan assembly 111 and heat spreader 112 or base 115 to allow air to enter opening 129 . Base 115 and heat transfer path 117 are hidden in FIG. 4C because base 115 and heat transfer path 117 may be located between heat spreader 112 and fan assembly 111 . As described above with respect to FIG. 4A, exit airflow A5 is directed over heat sink 113 (hidden in FIG. 4C), which is positioned near (eg, upstream) outlet opening 132 of fan assembly 111. can pass.

As shown in FIG. 4C, the fan assembly 111 can have an axis of rotation L and a transverse axis T arranged non-parallel (eg, perpendicular) to the axis L. As shown in FIG. Axis of rotation L is the longitudinal axis of the shaft assembly or shaft portion about which a portion of fan assembly 111 rotates and is therefore sometimes also referred to as longitudinal axis L. Cooling airflows A2 (see FIG. 4D) and A3 (see FIGS. 4C and 4D) pass through airflow openings 129 from heat sources within enclosures 100, 101, e.g., from electronic components 109 and power supply 118, respectively. , can enter the fan assembly 111 . In some arrangements, for example, airflow A2 may pass between heat spreader 112 or base 115 and fan assembly 111 and enter opening 129 . Cooling airflows A2, A3 may have velocity components that are aligned along longitudinal axis L, at least locally, near opening 129 and corresponding openings on opposite sides of fan assembly 111. FIG. Rotation of the blades of fan assembly 111 can thus draw air into fan assembly 111 along the longitudinal axis with high momentum. Outgoing airflow A4 may be directed radially outward through outlet openings 132 such that airflow A4 includes velocity components aligned along transverse axis T. FIG. Exit airflow A4 may exit enclosure 100 via exhaust port 105 (see FIGS. 4A-4B).

FIG. 4E illustrates a heat map of the assembled heat spreader, heat transfer path 117 and heat sink 113 during operation of fan assembly 111 . Heatmaps were calculated using Computational Fluid Dynamics (CFD) software. As shown in FIGS. 4D and 4E, the heat transfer paths 117 are coupled with the heat spreader 112 and can be disposed within grooves or channels of the heat spreader 112, for example. Heat spreader 112 may comprise a thermally conductive material such as copper. Heat transfer path 117 may comprise a heat pipe comprising thermally conductive channels. A working fluid (eg, water) can be provided within the lumen of heat transfer path 117 . In various embodiments, the heat pipe of transfer path 117 can comprise a copper pipe that is flattened to have a generally elliptical cross-sectional profile. In various embodiments, for example, the large diameter of the heat pipe can be 2-10 times larger than the small diameter of the heat pipe (eg, 5-9 times larger).

As shown in FIG. 4E, thermal energy Q can be stored within component 109 and/or conducted from there to heat spreader 112 . Thermal energy Q from the heat spreader 112 can be transferred to the heat sink 113 along one or more thermal paths Q1, Q2. For example, as shown in FIG. 4E, some thermal energy may be transferred from heat spreader 112 through heat transfer path 117 along first path Q1. By utilizing a working fluid with a high heat capacity inside the thermally conductive tubular member, thermal energy can be rapidly and effectively transferred to the heat sink 113 . A second path Q2 may transfer thermal energy along the area of the heat spreader 112 to the heat sink. As shown in FIG. 4E, the arrows representing the first path Q1 are wider than the arrows representing the second path Q2 so that heat is more efficient and/or along the first path Q1 than the second path Q2. Indicates rapid transmission. In various embodiments, the transfer path 117 can be significantly more thermally conductive than the first heat spreader 112 (eg, at least 5 times or at least 10 times the thermal conductivity of the heat spreader 112).

As shown in FIG. 4E, during operation of fan assembly 111, heat is removed from the heat sink by exiting airflow A4, as indicated by the relatively cool temperature maintained by the airflow across heat sink 113. so that it can be transmitted rapidly. Maintaining heat sink 113 at a cool temperature can increase thermal gradients between heat spreader 112 and/or heat transfer paths 117 and heat sink 113 . Beneficially, the disclosed embodiments can maintain the temperature of the local processing and data module 70 at suitably low temperatures.

FIG. 5 is a schematic cross-sectional side view of fan assembly 211 that may be used with local processing and data module 70 described herein. Fan assembly 211 may comprise a support frame 222 configured to provide structural support to fan assembly 211 . Frame 222 may comprise multiple frame portions connected together by, for example, fasteners or other mechanical connectors. In other embodiments, frame 222 may comprise a unitary body. Motor 220 may be mechanically coupled with frame 222 . A shaft assembly 223 can be connected to the motor 220 and can be connected to the longitudinal axis described above such that the longitudinal axis extends between and/or through the first and second ends of the shaft assembly 223 . can extend along L. In the embodiment of FIG. 5, where shaft assembly 223 is connected to motor 220, shaft support motor 220 may be considered part of support frame 222 or frame assembly. In the arrangement shown, shaft assembly 223 is cantilevered to motor 220 or frame 222 . As described herein, shaft assembly 223 can comprise a single shaft in some embodiments. In other embodiments, shaft assembly 223 can comprise multiple shafts coupled together. A bearing 224 , which may be a bushing, may be disposed at least partially around shaft assembly 223 . An impeller 221 may be operably coupled to and centered about a bushing or other bearing 224 .

In some embodiments, motor 220 includes a magnetic rotor assembly (not shown) coupled or formed with impeller 221 (e.g., in or on a hub or other central portion of impeller 221) when energized by electrical power. A stator (not shown) may be provided having one or more wire coils that create a varying or alternating magnetic field sufficient to drive the magnetic field. The magnetic field generated by the motor 220 interacts with the gyromagnetic assembly of the impeller 221 and can cause the gyromagnetic child, and thus the impeller 221, to rotate about the longitudinal axis L. In the illustrated embodiment, shaft assembly 223 can be fixed to motor 220 or frame 222 . Thus, in the illustrated embodiment, shaft assembly 223 may not rotate. In some embodiments, a bushing or other bearing 224 may be affixed over or secured to shaft assembly 223 and impeller 221 may rotate relative to bushing 224 and shaft assembly 223 . In some embodiments, bushings or other bearings 224 may be affixed or secured to impeller 221 and can rotate with impeller 221 relative to shaft assembly 223 . It should be appreciated that in other embodiments, motor 220 may include an internal stator and rotor assembly that rotates shaft assembly 223 (or a portion thereof). In such an arrangement, impeller 221 can be rotationally fixed relative to shaft assembly 223 and can rotate therewith.

The impeller 221 can be driven and rotated at high speeds to properly remove heat energy from the enclosure. For example, impeller 221 may rotate at speeds between 5,000 rpm and 10,000 rpm, such as 8,000 rpm or higher. As previously mentioned, the local processing and data module 70 can be worn or otherwise carried by the user for VR or AR experiences. A user may often move while wearing module 70 and thus local processing and data module 70, and fan assembly 211 therein may often be positioned at different angles to gravity g. However, in some cases, fan assembly 211 is angled at an angle such that the torque resulting from a lateral load on shaft assembly 223 bends or flexes shaft assembly 223 by angle P, as shown in FIG. or be moved with sufficiently high acceleration. Deflection or bending of shaft assembly 223 due to lateral load conditions can cause impeller 221 to contact or strike the interior surface of frame 222, which introduces undesirable noise and/or vibration into local processing and data module 70. can occur in Further, frequent application of such external torque to shaft assembly 223 may cause shaft assembly 223 to wear or experience fatigue, which may damage shaft assembly.

Therefore, it may be desirable to reduce or eliminate noise and vibration caused by the application of lateral loads (and resulting torque) on shaft assembly 223 and to reduce or eliminate the effects of fatigue or wear. Embodiments disclosed herein can advantageously control loads transverse to the longitudinal axis L shown in FIG. In some arrangements, for example, shaft assembly 223 may be made sufficiently rigid to reduce the amount of deflection of the distal end of shaft assembly 223 . In other arrangements, elements on frame 222 can help prevent impeller 221 and shaft assembly 223 from contacting frame 222, or substantially prevent deflection. can assist. For example, in some embodiments, the frame portion 222 ′ of the frame centered around the impeller 221 can include one or more magnets that align with corresponding magnets in the impeller 221 . For example, the magnets in the frame portion 222' and the impeller keep the impeller 221 centered within the frame 222 or at least counteract the deflection of the impeller 221 toward the frame 222 under lateral loads and the shaft assembly 223. can have similar polarities that are matched to reduce or eliminate the deflection of the .

FIG. 6 is a rear plan view of fan assembly 311 according to various embodiments disclosed herein. FIG. 7 is a schematic side cross-sectional view of fan assembly 311 of FIG. Unless otherwise noted, components shown in FIGS. 6 and 7 may include components similar to like-numbered components shown in FIG. As shown in FIGS. 6 and 7, the fan assembly 311 comprises a frame assembly that can have a first support frame 322a and a second support frame 322b coupled to the first frame 322a. can be done. The connected first and second support frames 322a, 322b can define an enclosure or chamber. Impeller 321 may be disposed between first and second support frames 322a, 322b, for example, within an enclosure defined by frames 322a, 322b. Thus, in the illustrated embodiment, the first and second support frames 322a, 322b can define a housing in which the impeller 321 is positioned. The impeller 321 of FIGS. 6 and 7 may comprise a hub 327 and one or more blades 328 (eg, fan blades) coupled to and/or extending from the hub 327 . Hub 327 can be coupled with shaft assembly 323 . In some embodiments, a bushing can be positioned between shaft assembly 323 and hub 327 . As previously mentioned, in some embodiments the impeller 321 can rotate with respect to a rotationally fixed shaft assembly 323 . In other embodiments, impeller 321 may rotate with rotating shaft assembly 323 .

As shown in FIG. 7, first end 333 of shaft assembly 323 can be supported by or coupled to first support frame 322a (eg, defined by or bounded by the frame). to support structures, motors, etc.). For example, in the embodiment of FIG. 7, first end 333 of shaft assembly 123 can be secured to first frame 322a at first shaft support 330 of first support frame 322a. In various embodiments, first end 333 can be welded, glued, or press-fit onto frame 322a. The first shaft support 330 can comprise a portion of the structural body defined by the first support frame 322a. In other embodiments, first support frame 322a comprises a motor such that first end 333 of shaft assembly 323 is affixed to the motor and shaft support 330 includes a portion of the motor. can be done. It should be appreciated that any suitable structure can be used as shaft support 330 to secure first end 333 of secure shaft assembly 323 .

As previously mentioned, it may be advantageous to control the lateral loads applied to shaft assembly 323 to reduce noise and vibration and reduce the risk of fatigue, wear, or excessive load conditions. Thus, in the embodiment of FIGS. 6 and 7, a second support frame 322b can be provided to control lateral loads on shaft assembly 323. As shown in FIG. A second support frame 322b can be coupled with the first support frame 322a to control the lateral load at the second end 334 of the shaft assembly 323, and the second end 334 of the shaft assembly 323 can be can be disposed at or across portion 334 . 6 and 7, the second support frame 322b can include a second shaft support 326 coupled with a second end 334 of the shaft assembly 323. In FIGS. A second shaft support 326 can traverse at least a portion of the airflow opening 329 and be rigidly attached to the second support frame 322b. In some embodiments, second shaft support 326 may comprise pins or other connectors that securely attach second end 334 of shaft assembly 323 to frame 322b. In various embodiments, a second shaft support 326 (eg, a pin) can be concentrically or axially connected to axis L about which shaft assembly 323, impeller 321, Or both the shaft assembly 323 and the impeller rotate. Positioning the second shaft support 326 along or centered with respect to the axis L can beneficially reduce deflection and improve rotation of the impeller 321 .

In the embodiment of FIGS. 6 and 7, the second shaft support 326 may comprise or be connected to an elongated member 325 between its first and second end portions 335a, 335b. . As shown in FIG. 6, the first end portion 335a of the elongate member 325 can be supported on the first portion of the second support frame 322b and the second end portion of the elongate member 325 can be supported on the second support frame 322b. 335b can be supported on a second portion of the second support frame 322b. The first and second end portions 335 a , 335 b (and corresponding first and second portions of the second frame 322 b ) can be spaced apart about the perimeter of the airflow opening 329 . In the illustrated embodiment, for example, the first and second end portions 335a, 335b (and the first and second portions of the frame 322b) are positioned on substantially opposite sides of the airflow opening 329. can be done. However, in other embodiments, the first and second end portions 335a, 335b of the elongate member 325 can be circumferentially spaced by less than 180°. For example, the elongated member 325 may extend from the first end portion 335a across the airflow opening 329 and may connect with the second end 334 of the shaft assembly. Elongation member 325 may further extend from second end 334 to second end portion 335b at an angle of less than 180°.

Firmly supporting the second end 334 of the shaft assembly 323 in addition to supporting the first end 333 can beneficially control lateral loads on the shaft assembly 323 . , the deflection of the assembly 323 can be reduced or eliminated. However, because the elongated member 325 may be positioned across part or all of the airflow opening 329 , the elongated member 325 may interfere with incoming air entering the fan assembly 311 through the airflow opening 329 . Thus, in the illustrated embodiment, elongate member 325 is configured to reduce or minimize disruption to incoming air (e.g., airflow into opening 329 is sufficiently maximized for thermal design goals). can be angled with respect to the transverse axis T by a selected or determined angle A (either limited or increased). For example, in some embodiments, computational techniques (such as computational fluid dynamics or CFD) can calculate an estimated airflow field through motor assembly 311 . Analysis or calculation can determine the desired angle A at which elongate member 325 should be oriented. In various embodiments, the desired angle A is compared over a range of angles A of the elongated member 325 (with the elongated member 325 attached to the frame 322b) of the airflow when the impeller 321 is rotating. may correspond to the maximum or local maximum of In some embodiments, the calculation technique is applied without the elongated member 325, and the opening 329 has less airflow compared to other locations around the opening 329 during operation of the fan assembly 311. The location of section 329 can be determined. If areas of minimal or reduced airflow are found (without elongated member 325 attached), the desired location or orientation of elongated member 325 may correspond to those areas of lesser airflow. In the illustrated embodiment, elongate member 325 is oriented at a sufficiently small angle A with respect to transverse axis T such that air can flow around the relatively thin profile of elongate member 325 at such an angle. It may be desirable to In various embodiments, angle A can be in the range of -45° to 45°, such as in the range of -30° to 30°. However, it should be understood that other angles A may also be used depending on the specific flow dynamics of fan assembly 311 . Beneficially, in various embodiments, a manufacturer or assembler can thus assemble the fan assembly 311 with a determined less airflow area during operation of the fan assembly 311 without the extension member 325. Based on , a manufacturer can position elongated members 325 to minimize disruption to airflow (eg, by orienting elongated members 325 over these minimal flow areas). The orientation of the elongated member 325 during assembly and after calculation of the minimum airflow pattern is determined by the manufacturer or assembler prior to securing the elongated member 325 considering the specific airflow pattern of the device to be cooled. can make it possible.

As discussed further below, the orientation of elongate member 325 provides for locally greater or globally maximum air flow across frame 322a and through opening 329 (or through openings in frame 322b). It can be substantially transverse to the direction of flow. Elongation member 325 can be oriented to have a minimal profile facing this greater or maximum airflow regime.

Figures 6A-6F illustrate various top and side profiles of the elongate member 325 described herein. For example, FIG. 6A is a schematic top plan view of elongated member 325a having a substantially linear profile along an xy plane defined substantially parallel to the plane of rotation of impeller 321, eg, impeller 321 is positioned at x Rotation may be in a plane substantially parallel to the xy plane shown in FIG. 6, such that the -y plane may be transverse to the longitudinal axis L of rotation. FIG. 6B is a schematic top plan view of elongated member 325b having first curved region 361a and second curved region 361b. 6B, the first and second curved regions 361a, 361b may reverse the direction of curvature at or near the transition region 360. In FIG. For example, the transition region 360 can serve as an inflection region where the first and second regions 361a, 361b change direction of curvature. Similarly, FIG. 6C is a schematic top plan view of an elongated member 325c having a first curved region 361a and a second curved region 361b, according to another embodiment. Unlike FIG. 6B, in FIG. 6C the first and second curved regions 361a, 361b can change direction of curvature along a smooth or continuous inflection or transition region 360. FIG. Shapes as shown from the top and bottom views (eg, along the xy plane) may be selected to achieve a desired flow profile through the fan assembly.

FIG. 6D has a substantially planar or linear profile when viewed along an xz plane defined substantially transverse to the xy plane, e.g., parallel to the direction of the longitudinal axis of rotation L. 7A and 7B are schematic side views of elongate member 325d (see the xz plane shown in FIG. 7). FIG. 6E is a schematic side view of elongated member 325e having a non-linear or shaped profile when viewed along the xz plane. For example, as shown in FIG. 6E, elongated member 325e has first portion 362a positioned along a first location of the z-axis and from first portion 362a to the z-axis (longitudinal axis L and a second portion 362b positioned offset along a line (which may be parallel or substantially aligned with ). A third transition portion 362c may serve to connect the first and second portions 362a, 362b.

FIG. 6F is a schematic side view of elongated member 325f having a nonlinear or curved profile when viewed along the xz plane, according to another embodiment. Similar to the embodiment of FIG. 6E, elongated member 325f has a first portion 363a along a first location along the z-axis and one or more ridges at other locations along the z-axis. and a second portion 363b. Unlike the embodiment of FIG. 6E, member 325f of FIG. 6F can comprise a curved surface along the z-axis. Accordingly, as shown in FIGS. 6A-6F, the shape of elongate member 325 may vary within the xy and/or xz planes. Elongation members 325a-325f may thus be shaped with any suitable type of three-dimensional profile to improve flow through the fan assembly.

FIG. 8 is a rear plan view of fan assembly 411, according to another embodiment. Unless otherwise noted, the components shown in FIG. 8 may include components similar to like-numbered components shown in FIGS. Increments by 100. However, unlike the embodiments of FIGS. 6 and 7, the elongate member 425 shown in FIG. 8 can have an airfoil shape to further improve airflow through the fan assembly 411 . In some embodiments, the thickness of elongated member 425 may vary along the length of elongated member 425 between first and second end portions 435a, 435b. In some embodiments, the width of elongate member 425 may vary along the length of elongate member 425 between first and second end portions 435a, 435b. In various embodiments, the width and/or thickness of elongate member 425 is sufficiently strong to support shaft assembly 423 and accommodate induced stresses during expected lateral loading conditions. can be selected to Therefore, the embodiment of FIG. 8 can also beneficially control lateral loads on shaft assembly 423 while maintaining proper airflow through fan assembly 411 .

FIG. 9 is a schematic cross-sectional side view of fan assembly 511, according to another embodiment. Unless otherwise noted, the components shown in FIG. 9 may include components similar to similarly numbered components shown in FIGS. Incremented. For example, similar to the embodiment of FIGS. 6-8, fan assembly 511 can include impeller 521 coupled with shaft assembly 523 (eg, using bushing 524). Further, similar to FIGS. 6-8, the first end 533 of the shaft assembly 523 is a first shaft support, which may be disposed, for example, on or on the motor 520 or on the structural body defined by the frame 522a. At 530, it can be fixed or affixed to the first frame 522a. Additionally, similar to FIGS. 6-8, the second end 533 of the shaft assembly 523 is fixed or secured to the second frame 522b at a second shaft support 526, which may also include an elongate member 525. can Beneficially, the first and second shaft supports 526 can control lateral loads on the shaft assembly 523 and can reduce deflection of the shaft assembly 523 . Further, as explained above, in some embodiments, the angular orientation of elongate member 525 improves airflow through fan assembly 511 or, in some cases, elongates into the flow of airflow. It can be selected to minimize airflow costs involving member 525 .

However, unlike the embodiment of FIGS. 6-8, in FIG. 9 the shaft assembly 523 includes a first shaft portion 523a that is rotationally fixed (eg, secured) to a first support frame 522a; and a second shaft portion 523 b that is rotationally fixed (eg, secured) to the impeller 521 . As shown in FIG. 9, the first end 533 of the shaft assembly 523 can be positioned on the first side of the impeller 521 and the second end 534 of the shaft assembly 523 can be positioned on the first side. It can be arranged on a second side of the impeller 521 opposite the side. The second shaft portion 523b can be rotatable over and/or relative to the free end of the first shaft portion 523a. In some embodiments, the first and second shaft portions 523a, 523b can comprise two separate shafts connected together at the impeller 521, for example. In some embodiments, the first and second shaft portions 523a, 523b can comprise a single shaft, with the first portion 523a on the first side of the impeller 521 and the second shaft portion 523a on the second side. Portion 523b is on the second side of impeller 521 .

Thus, in the embodiment of FIG. 9, the first shaft portion 523a can be rotationally fixed with respect to the first frame 522a (eg, the motor 520 or the structural body of the frame 522a). The second shaft portion 523 a can rotate with the impeller 521 and bushing 524 . As with the above embodiments, supporting the second end 534 of the shaft assembly 523 with the second frame 522b beneficially controls lateral load conditions and reduces deflection of the shaft assembly 523. can be made

FIG. 10 is a schematic cross-sectional side view of fan assembly 611, according to another embodiment. Unless otherwise noted, the components shown in FIG. 10 may include components similar to similarly numbered components shown in FIGS. Incremented. For example, similar to FIG. 9, first end 633 of shaft assembly 623 is connected to first frame 622a (which may comprise the structural body of the frame, motor 620, or any other suitable stationary feature of fan assembly 611). can be operatively coupled with A second end 634 of the shaft assembly 623 can be operatively coupled with the second frame 622b. In FIG. 10, impeller 621 and shaft assembly 623 are shown in partially exploded view for ease of illustration. However, during operation, first end 633 of shaft assembly 623 engages first frame 622a and second end 634 of shaft assembly 623 engages second frame 622b. Please understand.

Further, similar to FIG. 9, impeller 621 may be coupled with first and second shaft portions 623a, 623b of shaft assembly 623. As shown in FIG. The first and second shaft portions 623a, 623b can comprise a single unitary shaft, or the first and second shaft portions 623a, 623b can comprise two separate shafts. In the embodiment of FIG. 10, shaft portions 623a, 623b can be fixed to impeller 621 to impart rotation to impeller 621. In the embodiment of FIG. For example, a portion of impeller hub 627 may include follower magnets or a rotor assembly. The stator assembly of motor 620 can be energized to create a magnetic force on hub 627 imparting rotation of impeller 621 . Additionally, as shown in FIG. 10, the concave member, including the first bushing 624a, can be coupled or formed with the first frame 622a and/or the motor 620. As shown in FIG. A second concave member comprising a second bushing 624b can be coupled or formed with the second frame 622b. A first bushing 624a can act as a first shaft support 630 and rotationally support a first end 633 of the shaft assembly 623, and a second bushing 624b can provide a second shaft support. Acting as or comprising body 626, second end 634 of shaft assembly 623 may be rotationally supported. Thus, during rotation of impeller 621, first end 633 of first shaft portion 623a can rotate within first bushing 624a. A second end 634 of the second shaft portion 623a can rotate within a second bushing 624b.

Beneficially, the second bushing 624 b can help control lateral loads on the shaft assembly 624 during operation of the fan assembly 611 . As shown, the second bushing 624b of the shaft support 626 can be aligned along or concentrically aligned with the second shaft portion 623b. In some embodiments, the second shaft support 626 can also include an elongated member 625 that extends across part or all of the airflow opening 629 . As shown in FIG. 10, one or both of the first and second bushings 624a, 624b can comprise a concave member, eg, a concave inner surface. In some embodiments, the concave inner surface may comprise or define a generally spherical or substantially spherical surface. The concave inner surfaces defined in the first and/or second bushings 624a, 624b advantageously support the ends 633, 634 of the shaft assembly 623 against lateral loading conditions while supporting the shaft assembly 623 against lateral load conditions. can allow rotation of Further, the concave inner surfaces of the first and/or second bushings 624a, 624b are designed to accommodate a slight but acceptable rotation and/or translation of the ends 633, 634 of the shaft assembly 623. can be molded. Accommodating such negligible movement of ends 633 , 634 can further reduce stresses on shaft assembly 623 while preventing undesirably large deformations.

10A-10D illustrate additional examples of fan assemblies that can be used with the embodiments disclosed herein. For example, FIG. 10A is a schematic side view of fan assembly 911 with shaft assembly 923 operably coupled to impeller assembly 921 using bushing 924 . Unless otherwise noted, components shown in FIG. 10A may include components similar to similarly numbered components shown in FIGS. Incremented. In the embodiment of FIG. 10A, shaft assembly 923 may be connected at its ends to frames 922a, 922b (eg, welded, mechanically fastened, or otherwise attached to elongate member 925 or frame 922b). fixed), may comprise a single shaft. In some embodiments, one of the frames 922b can include an elongated member 925. As shown in FIG. 10A, shaft assembly 923 may comprise a separate member from bushing 924 and impeller 921; for example, shaft assembly 923 of FIG. 10A may not be integrally formed with bushing 924. In FIG. In FIG. 10A, shaft assembly 923 may or may not be rotationally fixed to bushing 924 . For example, in some embodiments, shaft assembly 923 attaches to bushing 924 such that bushing 924 and impeller 921 can rotate relative to (eg, rotate about) fixed shaft assembly 923 . It does not have to be rotationally fixed. In other embodiments, bushing 924 and impeller 921 may be rotationally fixed or coupled to shaft assembly 923 such that impeller 921 and bushing 924 rotate with or follow rotation of shaft assembly 923 .

10B is a schematic side view of fan assembly 1011 with shaft assembly 1023 operatively coupled to impeller assembly 1021 using bushing 1024. FIG. Unless otherwise noted, components shown in FIG. 10B may include components similar to similarly numbered components shown in FIGS. Incremented. Unlike the embodiment of FIG. 10A, in the embodiment of FIG. 10B, shaft assembly 1023 is physically integrated with impeller 1021 (and/or bushings not shown) to define a single unitary shaft assembly and impeller. may be Thus, in FIG. 10B, shaft assembly 1023 can be secured at its ends to frames 1022a, 1022b (one of which may include elongate member 1025). Rotation of the shaft assembly 1023 can impart rotation to the integrally formed impeller 1021 .

10C is a schematic side view of fan assembly 1111 comprising shaft assembly 1123 having first and second shaft portions 1123a, 1123b operably coupled with impeller 1121. FIG. Unless otherwise noted, components shown in FIG. 10C may include components similar to similarly numbered components shown in FIGS. Incremented. In the embodiment of FIG. 10C, the first and second shaft portions 1123a, 1123b can each comprise separate shafts coupled with the frames 1122a, 1122b. The first and second shaft portions 1123a, 1123b can be connected to the impeller 1121 using a hub 1124. As shown in FIG. In FIG. 10C, first and second shaft portions 1123a, 1123b can be fixed to frames 1122a, 1122b such that impeller 1121 and hub 1124 rotate relative to shaft portions 1123a, 1123b. In other embodiments, first and second shaft portions 1123a, 1123b are fixed to hub 1124 such that hub 1124 and impeller 1121 may rotate with first and second shaft portions 1123a, 1123b. can be done.

10D is a schematic side view of fan assembly 1211 comprising shaft assembly 1223 having first and second shaft portions 1223a, 1223b operatively coupled with impeller 1221. FIG. Unless otherwise noted, the components shown in FIG. 10D may include components similar to similarly numbered components shown in FIGS. Incremented. Unlike the embodiment of FIG. 10C, for example, the first shaft portion 1223a can be integrally formed with the first frame 1222a, for example, the first shaft portion 1223a and the first frame 1222a can be A single unitary component can be defined such that the first shaft portion 1223a extends from the first frame 1222a. Similarly, second shaft portion 1223b can be integrally formed with second frame 1222b, e.g., second shaft portion 1223b and second frame 1222b can be configured such that second shaft portion 1223b is A single unitary component can be defined as extending from the second frame 1222b. In some embodiments, first and second shaft portions 1223a, 1223b can be fixed such that hub 1224 and impeller 1221 rotate relative to shaft portions 1223a, 1223b.

FIG. 11 is a plan view of the flow pattern within fan assembly 711 before elongate member 725 is attached to fan assembly 711 . FIG. 12 is a schematic perspective view of the flow pattern in and around fan assembly 811 after elongate member 825 has been installed in a desired orientation relative to fan assembly 811 . The flow patterns of Figures 11 and 12 were calculated using computational fluid dynamics (CFD) techniques.

FIG. 11 shows the velocity field of the cooling airflows A2, A3 (see FIG. 4A) flowing into the airflow opening 729 of the fan assembly 711 without the extension member 725, i.e. before it is installed. show. As previously mentioned, fan assembly 711 may be used with various types of portable electronic devices, which may include different types or numbers of electronic components. Once the electronic device design is completed, the flow pattern through fan assembly 711 can be calculated during operation to determine the velocity field of fan assembly 711 given the electronic components within the enclosure. With respect to the assembly 711 shown in FIG. 11, a circumferential location Cmax can be determined that represents maximum or increased airflow when used with the local processing and data module 70 . Similarly, the circumferential location Cmin, which represents minimal or reduced airflow, can also be determined.

Based on the velocity profile determined for fan assembly 711 without elongate member 725, the desired orientation of elongate member 725 can be selected. In some cases, it may be desirable to orient elongate member 725 to accommodate minimal airflow through opening 729 . In some embodiments, one end portion of elongate member 725 can be positioned at circumferential location Cmin and the other end portion can be disposed at the opposite circumferential location. In some embodiments, the first and second end portions of elongate member 725 can be circumferentially positioned based on a weighted average or other criteria for minimum airflow. By positioning elongated member 725 in an area of minimal or reduced airflow, the effect of elongated member 725 on airflow into fan assembly 711 can be reduced or eliminated.

FIG. 12 illustrates airflow paths A2, A3 and their velocity profiles through fan assembly 811 after elongate member 825 has been oriented according to the selections and decisions made in connection with FIG. As shown in FIG. 12, extension member 825 does not significantly reduce airflow through fan assembly 811 . Rather, the airflow paths A2, A3 pass over the elongate member 825 with little or no loss of momentum.

Figure 13A is a schematic rear left perspective view of an electronic device, according to one embodiment. 13B is a schematic front right perspective view of the electronic device of FIG. 13A. Figure 13C is a schematic front plan view of the electronic device of Figures 13A-13B. Figure 13D is a schematic rear plan view of the electronic device of Figures 13A-13C. Figure 13E is a schematic right side view of the electronic device of Figures 13A-13D. Figure 13F is a schematic left side view of the electronic device of Figures 13A-13E. Figure 13G is a schematic top plan view of the electronic device of Figures 13A-13F. Figure 13H is a schematic bottom plan view of the electronic device of Figures 13A-13G.

The electronic device may comprise a local processing and data module 70 as described above. 3A-3D, the local processing and data module 70 is a first enclosure 1300 (which may be similar to enclosure 100) and is separated from the first enclosure 1300 by a gap 1367. , and a second enclosure 1301 . As described herein, one or more electronic devices (eg, processors) may be provided, at least in part, in a first compartment defined by first enclosure 1301 . One or more other electronic devices (eg, one or more batteries, one or more processors, etc.) may be provided, at least in part, in a second compartment defined by second enclosure 1302. .

In various embodiments, it is desirable to operate the electronic device at high speed (e.g., high speed for the central processing and/or graphics processing unit) while also charging the power source (e.g., the electronic device's battery). could be. The batteries disclosed herein can be any suitable type of battery, including, for example, lithium-ion batteries. However, operating the processor at high speed (and correspondingly high temperatures) while also charging and/or discharging the battery can be difficult. For example, in some embodiments, the processor may operate up to about 95° C. before deceleration (eg, before dynamic frequency scaling or deceleration is initiated). Such high temperatures for processor operation may exceed the maximum temperature threshold for effective battery usage (eg, which may be at or near 45° C. in some embodiments). Thus, the temperature rise from operating the processor at high speed can reduce the ability to charge the battery quickly and effectively during use of the electronic device (eg, during high speed operation of the processor). It should be understood that the processor and battery operating temperatures are approximate and that the processor and battery can be operated at various temperatures.

Accordingly, various embodiments disclosed herein utilize connecting portions 1365 to thermally isolate compartments of the enclosures 1300, 1301 in conjunction with the first and second enclosures 1300, 1301. FIG. For example, the processor may be located in the first compartment of the first enclosure 1300 and may operate at high speeds and thus high temperatures. A battery can be placed in a second compartment of the second enclosure 1301 and can be in electrical communication with other components of the device, such as the processor in the first enclosure 1300 . In some embodiments, one or more processing elements can be located within the first enclosure 1300 and one or more other processing elements can be located within the second enclosure 1301. can be done. In some embodiments, processing elements in both enclosures 1300, 1301 can be used to control the operation of the system.

In some embodiments, connecting portion 1365 can comprise channel 1319, which can be similar to channel 119 described above. In some embodiments, the connecting portion 1365 can comprise an air or thermal gap that separates the first and second enclosures 1300,1301. The relatively low thermal conductivity (and high thermal insulation properties) of air gaps can serve to thermally isolate the processor in first enclosure 1300 from the battery in second enclosure 1301 . In some embodiments, one or more connectors or wires can pass through channel 119 to electrically connect the processor in first enclosure 1300 and the battery in second enclosure 1301 . Additional components may also be provided in the first and/or second enclosures 1300,1301. Beneficially, therefore, the thermal gap provided by connecting portion 1365 can reduce or substantially prevent heat from passing from the processor in first enclosure 1300 to the battery in second enclosure 1301. . Thus, the processor can operate at relatively high speeds and temperatures while keeping the battery cool enough to allow charging during operation of the processor. In contrast, providing the battery and processor in a single compartment or enclosure may not provide adequate thermal isolation between the battery and processor.

In the illustrated embodiment, the connecting portion 1365 comprises an air gap to provide thermal insulation between the first and second enclosures 1300,1301. In other embodiments, other low thermal conductivity materials (such as insulators or dielectrics) may be provided in connecting portion 1365 . For example, in some embodiments, a heat insulating polymer (eg, potting compound or sealant) may be provided at connecting portion 1365 . In some embodiments, the first and second compartments defined by the first and second enclosures 1300, 1301 may also be filled with gas (eg, air). In other embodiments, electronic devices (eg, processors, batteries, etc.) may also be encapsulated or otherwise enclosed within another type of insulating material, such as a polymer or dielectric.

Further, as shown in FIGS. 13E-F, the first and second enclosures 1300, 1301 are defined by a connecting portion 1365 positioned or extending between the first and second enclosures 1300, 1301. can be separated by a gap 1367 having a gap width G as shown in FIG. ). A gap 1367 (eg, an air gap between the enclosures 1300,1301) can provide improved thermal isolation between the first and second enclosures 1300,1301. In some embodiments, the majority of the space between compartments within the first and second enclosures 1300, 1301 may be filled with air or gas. For example, channel 1319 can be filled with gas in some embodiments, and gap 1367 between outer portions of enclosures 1300, 1301 can comprise gas, such as air. As shown, channel 1319 is smaller than the cross-sectional area of the first compartment of first enclosure 1300 taken along a direction parallel to the maximum dimension of the first compartment (and/or the cross-sectional area of second enclosure 1301 (less than the cross-sectional area of the second compartment of ).

Enclosures 1300 , 1301 can include clips 1366 positioned within gaps 1367 . The clip 1366 can comprise protrusions extending from the first and second enclosures 1300,1301. The clip 1366 can improve the attachment of the module 70, for example, onto a belt or other clothing accessory of the user. In some embodiments, the gap width G of connecting portion 1365 (eg, channel 1319) and/or gap 1367 is in the range of 0.5 mm to 10 mm, in the range of 1 mm to 7 mm, or in the range of 1 mm to 5 mm. may be Providing a thermal gap or thermal barrier (eg, an air gap) may provide sufficient thermal isolation between enclosures 1300, 1301. FIG. In some embodiments, one or both of the enclosures 1300, 1301 are constructed from materials that have relatively low thermal conductivity to further improve the thermal barrier between the internal compartments of the enclosures 1300, 1301. good too. For example, in some embodiments, a lower thermal conductivity material (eg, aluminum or plastic) may be used compared to a higher thermal conductivity material. In various embodiments as disclosed above, the thermal gap provided by connecting portion 1365 and/or gap 1367 still allows at least some heat to flow from first enclosure 1300 to second enclosure 1301. may allow you to do so. However, the fan assembly disclosed herein mitigates this heat transfer such that heat dissipation from the first enclosure 1300 to the second enclosure 1301 is reduced.

FIG. 14A is a side view schematic heat transfer map 1450 of the electronic device of FIGS. 13A-13H during operation of the electronic device. FIG. 14B is a schematic top view of heat transfer map 1450 . As shown in FIGS. 14A and 14B, the temperature profile of the first enclosure 1300 (in which the processor may be placed) is significantly higher than the temperature profile of the second enclosure 1301 (in which the battery may be placed). , indicating that connection 1365 and/or gap 1367 provide adequate thermal isolation between enclosures 1300,1301. Various embodiments can beneficially provide thermal isolation between enclosures 1300, 1301 of at least 40°C, such as at least 50°C.

In various embodiments disclosed herein, the inventors have invented new, original, and decorative designs for electronic devices. In Figures 15A-15H, the shading showing outlines and dashed lines is for illustrative purposes and does not form part of the claimed design. FIG. 15A is a schematic rear left perspective view of an electronic device, according to one embodiment of the present design. 15B is a schematic front right perspective view of the electronic device of FIG. 15A. Figure 15C is a schematic front plan view of the electronic device of Figures 15A-15B. Figure 15D is a schematic rear plan view of the electronic device of Figures 15A-15C. Figure 15E is a schematic right side view of the electronic device of Figures 15A-15D. Figure 15F is a schematic left side view of the electronic device of Figures 15A-15E. Figure 15G is a schematic top plan view of the electronic device of Figures 15A-15F. Figure 15H is a schematic bottom plan view of the electronic device of Figures 15A-15G. Various embodiments are therefore directed to decorative designs for the electronic devices shown and described herein, including at least FIGS. 15A-15H.

Exemplary Embodiments Embodiment 1: An electronic device comprising:
A housing, the housing comprising:
a first compartment in which a first electronic component is located;
a second compartment in which a second electronic component is located, wherein one or both of the first and second electrical components are in electrical communication with another component of the electronic device; ,
a connecting portion extending between the first compartment and the second compartment;
wherein the first compartment is separated from the second compartment by a gap at a location spaced from the connecting portion to provide thermal isolation between the first and second compartments electronic device.

Embodiment 2: The electronic device of embodiment 1, wherein the first electronic component comprises a processor.

Embodiment 3: The electronic device of any one of embodiments 1-2, wherein the second electronic component comprises a power supply.

Embodiment 4: The electronic device of embodiment 3, wherein the power source comprises a battery.

Embodiment 5: The electronic device of any one of Embodiments 1-4, wherein the first compartment, the second compartment, and the connecting portion are gas-filled.

Embodiment 6: The electronic device of any one of embodiments 1-5, wherein the connecting portion comprises a channel between the first compartment and the second compartment.

Embodiment 7: The electronic device of embodiment 6, wherein the channel has a lateral cross-sectional area that is less than the cross-sectional area of the first compartment taken along a direction parallel to the maximum dimension of the first compartment.

Embodiment 8: The electronic device of any one of embodiments 1-7, wherein the electronic device comprises an augmented reality device.

Embodiment 9: The electronic device of embodiment 8, further comprising a connector configured to connect to a headpiece worn by a user.

Embodiment 10: The electronic device of any one of embodiments 1-9, wherein the first electronic component is in electrical communication with the second electronic component.

Embodiment 11: The electronic device of any one of embodiments 1-10, further comprising a clip positioned in the gap between the first compartment and the second compartment.

Embodiment 12: A portable electronic device comprising:
a housing;
a battery disposed within the housing to provide power for at least a portion of the portable electronic device;
an electronic component for operating a portable electronic device, the electronic component disposed within the housing;
A heat abatement assembly comprising a frame assembly,
A shaft assembly having a first end and a second end opposite the first end, the first and second ends being supported by a frame assembly; ,
an impeller having fan blades coupled with a hub, the hub coupled with the shaft assembly for rotation within the housing about the longitudinal axis of the shaft assembly;
with
A load transverse to the longitudinal axis of the shaft assembly is controlled by a frame assembly at the second end of the shaft assembly;
The heat abatement assembly removes heat generated from one or both of the battery and electronic components;
a heat abatement assembly;
A portable electronic device comprising:

Embodiment 13: The housing comprises a first enclosure and a second enclosure, wherein the electronic components and the heat mitigating assembly are located within the first enclosure and the battery is located within the second enclosure 13. A power supply assembly as recited in embodiment 12, wherein the power supply assembly is .

Embodiment 14: A shaft assembly comprises a first shaft portion connected to a first frame of the frame assembly and a second shaft portion connected to a second frame of the frame assembly, the first 14. A power supply assembly according to embodiment 12 or 13, wherein the and second shaft portions are at least partially disposed on opposite sides of the hub.

Embodiment 15: A fan assembly comprising:
a first support frame;
a shaft assembly having a first end coupled to the first support frame and a second end spaced apart from the first end;
a second support frame coupled with the first support frame and disposed at or across the second end of the shaft assembly;
An impeller having fan blades coupled to a hub disposed over a shaft assembly for rotation between first and second support frames about a longitudinal axis. with the impeller
and lateral loads on the shaft assembly are controlled by the first and second support frames.

Embodiment 16: Embodiment wherein the second support frame comprises an air flow opening centered about a longitudinal axis extending between the first end and the second end of the shaft assembly 16. The fan assembly according to 15.

Embodiment 17: An embodiment further comprising a shaft support coupled with the second end of the shaft assembly, the shaft support rigidly attached to the second support frame across the airflow openings 17. The fan assembly according to 16.

Embodiment 18: The shaft support is supported in separate first and second portions of the second support frame, the separate first and second portions being spaced about the perimeter of the airflow opening. 18. The fan assembly of embodiment 17, wherein

Embodiment 19: The fan assembly of Embodiment 18, wherein the first portion of the second support frame is generally on the opposite side of the airflow openings to the second portion of the second support frame.

Embodiment 20: The fan of any one of embodiments 17-19, wherein the shaft support is positioned in a rotational position of the airflow opening corresponding to maximum airflow when the impeller is operating. assembly.

Embodiment 21: Any one of embodiments 17-20, wherein the shaft support comprises an elongated member between its first and second ends, the elongated member having a wing shape. Fan assembly as described.

Embodiment 22: The shaft support comprises an elongate member between its first and second ends, the elongate member having a variable width along its length, embodiments 17-21 A fan assembly according to any one of the preceding claims.

Embodiment 23: The shaft support comprises an elongate member between its first and second ends, the elongate member having a variable thickness along its length, embodiments 17-22 A fan assembly according to any one of the preceding claims.

Embodiment 24: A shaft assembly comprises a first shaft portion rotationally fixed to the first support frame and a second portion rotationally fixed to the impeller, the second portion , over the free end of the first shaft portion of the shaft assembly.

Embodiment 25: A shaft assembly comprises an elongated member having a first end located on a first side of the impeller and a second end located on a second side of the impeller. 25. A fan assembly according to any one of embodiments 15-24, wherein the second side is opposite the first side.

Embodiment 26: The fan assembly of embodiment 25, further comprising a concave member coupled with the second support frame and configured to rotationally support the second end of the elongate member.

Embodiment 27: The fan assembly of embodiment 26, further comprising an additional concave member coupled with the first support frame and configured to rotationally support the first end of the elongate member.

Embodiment 28: The airflow path of the fan assembly has an airflow opening centered about the longitudinal axis and a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis. 28. A fan assembly according to any one of embodiments 16-27, extending between the part.

Embodiment 29: A fan assembly according to embodiment 28, wherein the axis non-parallel to the longitudinal axis is disposed along the radially extending axis of the impeller substantially perpendicular to the longitudinal axis.

Embodiment 30: A fan assembly comprising:
an enclosure supporting a shaft assembly at a first end, the shaft having a second end opposite the first end;
an impeller having fan blades coupled to a hub, the hub coupled to a shaft for rotation within an enclosure about a longitudinal axis;
and lateral loads on the shaft assembly are controlled by an enclosure at the second end of the shaft assembly.

Embodiment 31: A fan assembly comprising:
a housing comprising a shaft support and a shaft assembly supported by the shaft support;
an impeller disposed within the housing and coupled with the shaft assembly, the impeller configured to rotate about the longitudinal axis of the shaft assembly;
a first airflow opening centered about the longitudinal axis;
a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis;
an airflow path of the fan assembly extending between the first airflow opening and the second airflow opening;
and the shaft support comprises an elongated member extending across at least a portion of the first airflow opening, the elongated member for at least displacing airflow through the first airflow opening. A fan assembly angularly positioned across the first airflow opening at an angle to the non-parallel axis that allows for a maximum value.

Embodiment 32: A fan assembly according to embodiment 31, wherein the angles for the non-parallel axes are acute.

Embodiment 33: A fan assembly according to embodiment 32, wherein the angle for the non-parallel axes is in the range of -45° to 45°.

Embodiment 34: A fan assembly according to embodiment 33, wherein the angle with respect to the non-parallel axes is in the range of -30° to 30°.

Embodiment 35: A method of manufacturing a fan assembly, the method comprising:
providing a fan assembly, the fan assembly comprising:
a housing;
an impeller disposed within the housing and coupled with the shaft assembly, the impeller configured to rotate about the longitudinal axis of the shaft assembly;
a first airflow opening centered about the longitudinal axis;
a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis;
wherein the airflow path of the fan assembly extends between the first airflow opening and the second airflow opening;
calculating an airflow profile through the fan assembly;
Based on the calculation, providing a shaft support to support the end of the shaft assembly, the shaft support extending across at least a portion of the first airflow opening, elongating a step comprising a member;
A method, including

Embodiment 36: Based on calculations, the first airflow opening is at least partially traversed at an angle to non-parallel axes that allows at least a maximum of airflow through the first airflow opening. 36. The method of embodiment 35, further comprising the step of angularly positioning the elongated member by:

Embodiment 37: The method of embodiment 36, wherein angularly positioning comprises orienting the angle to the non-parallel axis at an acute angle.

Embodiment 38: The method of Embodiment 37, wherein angularly positioning comprises orienting the angle with respect to the non-parallel axes within the range of -45° to 45°.

Embodiment 39: The method of Embodiment 38, wherein angularly positioning comprises orienting the angle with respect to the non-parallel axes within the range of -30° to 30°.
Additional Considerations

Any processes, methods, and algorithms described herein and/or depicted in the accompanying figures are specific and specific computer instructions configured to execute one or more physical instructions. It may be embodied in code modules, and thereby fully or partially automated, executed by a physical computing system, hardware computer processor, application specific circuitry, and/or electronic hardware. For example, a computing system can include a general purpose computer (eg, a server) or a special purpose computer, dedicated circuitry, etc. programmed with specific computer instructions. The code modules can be compiled and linked into an executable program, installed in a dynamically linked library, or written in an interpreted programming language. In some implementations, specific acts and methods may be performed by circuitry specific to a given function.

Moreover, implementation of the functionality of the present disclosure may be sufficiently mathematically, computationally, or technically complex to require either special-purpose hardware (utilizing appropriate specialized executable instructions) or single-use hardware. More than one physical computing device may be required to perform the functionality, for example, due to the amount or complexity of computations involved, or to provide results substantially in real time. For example, a video may contain many frames, each frame having millions of pixels, and specifically programmed computer hardware can perform desired image processing tasks or processes in a commercially reasonable amount of time. There is a need to process the video data to serve the application.

Code modules or any type of data may be stored in hard drives, solid state memory, random access memory (RAM), read only memory (ROM), optical discs, volatile or nonvolatile storage devices, combinations of the same, and/or It may be stored on any type of non-transitory computer-readable medium such as physical computer storage, including equivalents. The methods and modules (or data) may also be transmitted as data signals (e.g., carrier waves or other analog or digital propagated signals) generated on various computer-readable transmission media, including wireless-based and wire/cable-based media. part) and may take various forms (eg, as part of a single or multiplexed analog signal, or as a plurality of discrete digital packets or frames). The results of any disclosed process or process step can be persistently or otherwise stored in any type of non-transitory, tangible computer storage device or communicated over a computer-readable transmission medium.

Any process, block, state, step, or functionality in a flow diagram described herein and/or depicted in an accompanying figure represents a specific function (e.g., logic or arithmetic) or It should be understood as potentially representing a code module, segment, or portion of code containing one or more executable instructions for implementing a step. Various processes, blocks, states, steps, or functionality may be combined, rearranged, added, deleted, modified, or otherwise provided herein in the illustrative examples. can be changed from In some embodiments, additional or different computing systems or code modules may implement some or all of the functionality described herein. The methods and processes described herein are also not limited to any particular sequence, and blocks, steps, or states associated therewith may be performed in any other suitable sequence, e.g., serially, in parallel , or in some other manner. Tasks or events may be added to or removed from the disclosed exemplary embodiments. Moreover, the separation of various system components in the implementations described herein is for illustrative purposes and should not be understood as requiring such separation in all implementations. It should be appreciated that the described program components, methods, and systems may generally be integrated together in a single computer product or packaged in multiple computer products. Many implementation variations are possible.

The present processes, methods and systems may be implemented in a network (or distributed) computing environment. Networking environments include enterprise-wide computer networks, intranets, local area networks (LAN), wide area networks (WAN), personal area networks (PAN), cloud computing networks, crowdsourced computing networks, the Internet, and the World Wide Web. . The network can be a wired or wireless network or any other type of communication network.

The present invention includes methods that can be implemented using the subject devices. The method may include an act of providing such suitable device. Such offerings may be performed by end users. In other words, the act of "providing" simply means that the end-user obtains, accesses, approaches, locates, configures, or processes the required device in the subject method. require the act of activating, powering on, or otherwise providing. The methods recited herein may be performed in any logically possible order and order of the recited events.

The system and method of the present disclosure each have several innovative aspects, none of which are solely responsible or required for the desirable attributes disclosed herein. The various features and processes described above can be used independently of each other or combined in various ways. All possible combinations and subcombinations are intended to fall within the scope of this disclosure. Various modifications of the implementations described in this disclosure may be readily apparent to those skilled in the art, and the general principles defined herein may be adapted to other implementations without departing from the spirit or scope of this disclosure. can be applied. Accordingly, the claims are not intended to be limited to the implementations shown herein, but are to be accorded the broadest scope consistent with the disclosure, principles and novel features disclosed herein. be.

Certain features that are described in this specification in the context of separate implementations or embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination. Further, although features are described above as acting in certain combinations and may also be originally claimed as such, one or more features from the claimed combination may in some cases be combined may be deleted from and claimed combinations may cover subcombinations or variations of subcombinations. No single feature or group of features is required or essential in every embodiment.

In particular, "can", "could", "might", "may", "e.g.", and equivalents Conditional statements used herein generally refer to a feature, element, and/or steps, while other embodiments are intended to convey that they are not. Thus, such conditional statements generally state that features, elements, and/or steps are claimed in any way in one or more embodiments or that one or more embodiments Any logic, with or without input or prompting, to determine whether these features, elements, and/or steps should be included or performed in any particular embodiment necessarily not intended to imply inclusion. The terms "comprising," "including," "having," and equivalents are synonyms and are used generically in a non-limiting manner and include additional elements, features, acts, operations, etc. do not exclude Also, the term "or" is used in its inclusive sense (and not in its exclusive sense), thus, for example, when used to connect a list of elements, the term "or" Means one, some, or all of the elements in the list. Additionally, as used in this application and the appended claims, the articles "a," "an," and "the" refer to "one or more" or "at least one," unless specified otherwise. should be interpreted to mean Unless specifically defined herein, all technical and scientific terms used herein are intended to have the broadest commonly understood meaning possible while maintaining the validity of the claims. should be given.

As used herein, a phrase referring to “at least one of” a list of items refers to any combination of those items, including single elements. As an example, "at least one of A, B, or C" encompasses A, B, C, A and B, A and C, B and C, and A, B, and C is intended. Conjunctive sentences, such as the phrase "at least one of X, Y, and Z," generally refer to at least one of X, Y, or Z, unless specifically stated otherwise. understood differently in contexts such as those used to convey that a Thus, such conjunctions generally imply that certain embodiments require that at least one of X, at least one of Y, and at least one of Z each be present. not intended to

Similarly, although operations may be depicted in the figures in a particular order, it is imperative that such operations be performed in the specific order shown or in a sequential order to achieve desirable results; , it should be appreciated that not all illustrated acts need be performed. Further, the drawings may graphically depict one or more exemplary processes in the form of flow charts. However, other acts not depicted may be incorporated within the illustrative methods and processes illustrated schematically. For example, one or more additional acts may be performed before, after, concurrently with, or between any of the illustrated acts. Additionally, the operations may be rearranged or reordered in other implementations. In some situations, multitasking and parallel processing can be advantageous. Furthermore, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, as the described program components and systems are generally can be integrated together in multiple software products or packaged in multiple software products. Additionally, other implementations are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results.

Claims (34)

A wearable electronic device,
A housing configured to be worn by a user, the housing comprising:
a first compartment in which a first electronic component is located;
a second compartment containing a second electronic component, one or both of the first and second electronic components in electrical communication with another component of the electronic device; a compartment;
a fan assembly disposed within the first compartment;
one or more ports for providing fluid communication between the fan assembly and an outside environment;
A connecting portion extending between said first and second compartments, said connecting portion comprising a channel providing fluid communication between said first and second compartments. , a connecting portion and a housing comprising
the first compartment is separated from the second compartment by a gap at a location spaced from the connecting portion to provide thermal isolation between the first and second electronic components ; wearable electronic devices. The wearable electronic device of Claim 1, wherein the first electronic component comprises a processor. 3. The wearable electronic device of Claim 1, wherein the second electronic component comprises a power supply. 4. The wearable electronic device of Claim 3, wherein the power source comprises a battery. 2. The wearable electronic device of claim 1, wherein the first compartment, the second compartment, and the channel of the connecting portion are filled with gas. The one or more ports include one or more inlet ports to allow gas to enter the enclosure and one or more ports to allow gas to exit the enclosure. The wearable electronic device of claim 1 , comprising an exhaust port . 2. The wearable electronic device of Claim 1 , wherein the channel has a lateral cross-sectional area that is less than the cross-sectional area of the first compartment taken along a direction parallel to the maximum dimension of the first compartment. The wearable electronic device of Claim 1, wherein the electronic device comprises an augmented reality device. 9. The wearable electronic device of Claim 8, further comprising a connector configured to connect to a headpiece worn by a user. 2. The wearable electronic device of Claim 1, wherein the first electronic component electrically communicates with the second electronic component using one or more electrical connectors extending through the channel . 3. The wearable electronic device of Claim 1, further comprising a clip positioned within a gap between the first and second compartments. further comprising a heat abatement assembly comprising a frame assembly comprising a shaft assembly ;
said shaft assembly having a first end and a second end opposite said first end, said first and second ends being supported by said frame assembly ;
the fan assembly includes fan blades coupled to a hub, the hub coupled to the shaft assembly for rotation within the housing about a longitudinal axis of the shaft assembly ;
a load transverse to the longitudinal axis of the shaft assembly is controlled by the frame assembly at the second end of the shaft assembly;
2. The wearable electronic device of Claim 1 , wherein the heat-reducing assembly removes heat generated from the first and second electronic components . 13. The wearable electronic device of Claim 12, wherein the heat mitigating assembly is disposed within the first compartment and the second electronic component comprises a power source in the form of a battery . The shaft assembly comprises a first shaft portion connected to a first frame of the frame assembly and a second shaft portion connected to a second frame of the frame assembly, wherein the first and second 13. The wearable electronic device of claim 12, wherein two shaft portions are at least partially disposed on opposite sides of the hub. The fan assembly includes :
a first support frame;
a shaft assembly, said shaft assembly having a first end coupled with said first support frame and a second end spaced apart from said first end; a shaft assembly;
a second support frame coupled with the first support frame and disposed at or across a second end of the shaft assembly; a second support frame,
An impeller having fan blades coupled with a hub disposed over the shaft assembly for rotation between the first and second support frames about a longitudinal axis. with an impeller and
2. The wearable electronic device of claim 1 , wherein lateral loads on said shaft assembly are controlled by said first and second support frames. 16. The wearable electronic device of Claim 15, wherein an airflow opening is centered about the longitudinal axis extending between the first and second ends of the shaft assembly. 17. Further comprising a shaft support coupled with the second end of the shaft assembly, the shaft support rigidly attached to the second support frame across the airflow opening. Wearable electronic device according to . The shaft support is supported in separate first and second portions of the second support frame, the separate first and second portions being spaced about the perimeter of the airflow opening. 18. The wearable electronic device of claim 17, wherein 19. The wearable electronic device of Claim 18, wherein the first portion of the second support frame is generally opposite the airflow opening to the second portion of the second support frame. 18. The wearable electronic device of Claim 17, wherein the shaft support is positioned within a rotational position of the airflow opening corresponding to maximum airflow when the impeller is operating. 18. The wearable electronic device of Claim 17, wherein the shaft support comprises an elongated member between its first and second ends, said elongated member having a wing shape. 18. The wearable of Claim 17, wherein the shaft support comprises an elongated member between its first and second ends, said elongated member having a variable width along its length. electronic device . 18. The wearable of Claim 17, wherein the shaft support comprises an elongated member between its first and second ends, said elongated member having a variable thickness along its length. electronic device . The shaft assembly comprises a first shaft portion rotationally fixed to the first support frame and a second portion rotationally fixed to the impeller, wherein the second portion comprises the 16. The wearable electronic device of claim 15, rotatable over the free end of the first shaft portion of the shaft assembly. The shaft assembly includes an elongate member having a first end located on a first side of the impeller and a second end located on a second side of the impeller. 16. The wearable electronic device of claim 15, having a , wherein the second side is opposite the first side. 26. The wearable electronic device of Claim 25, further comprising a concave member coupled with said second support frame and configured to rotationally support a second end of said shaft assembly . 27. The wearable electronic device of Claim 26, further comprising an additional concave member coupled with the first support frame and configured to rotationally support the first end of the shaft assembly . The airflow path of the fan assembly comprises an airflow opening centered about the longitudinal axis and a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis. 17. The wearable electronic device of claim 16, extending between. 29. The wearable electronic device of claim 28, wherein an axis non-parallel to the longitudinal axis is arranged along a radially extending axis of the impeller substantially perpendicular to the longitudinal axis. The fan assembly includes :
an enclosure supporting a shaft assembly at a first end, said shaft assembly having a second end opposite said first end;
an impeller having fan blades coupled to a hub, said hub coupled to said shaft assembly for rotation within said enclosure about a longitudinal axis;
2. The wearable electronic device of claim 1 , wherein lateral loads on the shaft assembly are controlled by the enclosure at the second end of the shaft assembly. The fan assembly includes:
an impeller disposed within the housing and coupled with a shaft assembly, the impeller configured to rotate about a longitudinal axis of the shaft assembly;
a first airflow opening centered about the longitudinal axis;
a second airflow opening having a surface centered about an axis non-parallel to the longitudinal axis;
an airflow path of the fan assembly extending between the first airflow opening and the second airflow opening;
The fan assembly further includes an elongated member extending across at least a portion of the first airflow opening, the elongated member facilitating at least air flow through the first airflow opening. 2. The wearable electronic device of claim 1 , angularly positioned across said first airflow opening at an angle to said non-parallel axis that allows for a maximum value. 32. The wearable electronic device of Claim 31, wherein the angles for the non-parallel axes are acute. 33. The wearable electronic device of claim 32, wherein the angles with respect to the non-parallel axes are in the range of -45° to 45°. 34. The wearable electronic device according to claim 33, wherein the angles with respect to said non-parallel axes are in the range of -30° to 30°.