HEAT MANAGEMENT FOR ELECTRONIC DEVICES

• US 20180136491A1
• Filed: 02/06/2017
• Published: 05/17/2018
• Est. Priority Date: 02/29/2016
• Status: Active Grant

• Current Assignee: Snap, Inc.
• Original Assignee: Snap, Inc.
• Inventors: Ashwood, Andrea, Shukla, Ashutosh Y., Steger, Stephen Andrew
• Granted Patent: US 10,042,187 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02C 11/08 Anti-misting means, e.g. ventilating, heating H05B3/84 takes precedence; Wipers
• CPC Class Codes: G02C 11/10 Electronic devices other than hearing aids
• CPC Class Codes: G02C 2200/10 Frame or frame portions made from wire
• CPC Class Codes: G02C 5/008 Spectacles frames characterized by their material, material structure and material properties
• CPC Class Codes: G02C 5/14 Side-members
• CPC Class Codes: G02C 5/18 reinforced
• CPC Class Codes: G02C 5/22 Hinges pivotal connection in general F16C11/00
• CPC Class Codes: H05K 5/0086 portable, e.g. battery operated apparatus casings for switching devices H01H9/02
• CPC Class Codes: H05K 7/2039 characterised by the heat transfer by conduction from the heat generating element to a dissipating body arrangements for increasing/decreasing heat-transfer, e.g. fins details, F28F13/00

Abstract

Apparatuses and systems are disclosed and can include a case for eyewear having an eyewear body carrying onboard electronic components that comprise a heat source that generates heat during electrically powered operation is disclosed. The case can hold the eyewear when the eyewear are in a stowed position. The case can further include one or more supports to support the eyewear in the stowed position within the holding space. One or more heat sinks are integrated with the one or more supports. Each of the one or more heat sinks are thermally conductive coupled with a corresponding heat sink of the eyewear. A first heat conduction pathway is thermally connected to the one or more heat sinks and can extend into the case body to conduct heat from the heat source into the case with the eyewear supported in the stowed position.

Claims

1. A case for eyewear device having an eyewear body carrying onboard electronic components that comprise a heat source that generates heat during electrically powered operation thereof, the case comprising:

a case body having a hollow interior defining a holding space configured for holding the eyewear device;

one or more supports defined by the interior of the case body and configured for engagement with a portion of the eyewear device to support the eyewear device in a stowed position within the holding space;

one or more heat sinks housed by the case body and thermally conductively coupled in a heat transfer relationship with the heat source of the eyewear device; and

a first heat conduction pathway thermally connected to the one or more heat sinks and extending into the case body, the first heat conduction pathway thereby conducting heat from the heat source into the case body when the eyewear device is supported in the stowed position.

2. The case of claim 1, wherein the first heat conduction pathway includes a heat spreader disposed internally within a wall of the case body at a back portion thereof.

3. The case of claim 2, wherein the heat spreader comprises one or more of a copper heat sink, an aluminum heat sink, a graphite heat sink, and a heat pipe.

4. The case of claim 2, wherein the first heat conduction pathway includes a metal strip imbedded in a wall of the case body, the metal strip thermally coupled to the one or more heat sinks and configured to interface with a portion of the eyewear body that comprises part of an articulated joint between a temple and a frame of the eyewear body.

5. The case of claim 1, wherein the one or more heat sinks are integrated with the one or more supports, each of the one or more heat sinks being configured for the thermally conductive coupling with a corresponding heat sink of the eyewear device, wherein the heat sink of the eyewear device is connected in a heat transfer relationship with the heat source of the eyewear device.

6. A system including a wearable device, the system comprising:

smart glasses comprising;

a frame,

an elongated temple connected to the frame at an articulated joint between the temple and the frame,

onboard electronic components carried by at least one of the frame and the temple, the onboard electronic components comprising a heat source that generates heat during electrically powered operation thereof, and

a case configured to receive the receive smart glasses therein with the elongated temple disposed in a stowed position relative to the frame, the case comprising;

one or more supports formed by a body of the case and configured to receive a portion of the smart glasses thereon with the elongate temple in the stowed position relative to the frame; and

a first heat conduction pathway terminating at one or more heat sinks at or adjacent the one or more supports, the first heat conduction pathway extending into the body of the case, the first heat conduction pathway configured to conduct heat from the heat source into the body of the case when the smart glasses are supported in the stowed position.

7. The case of claim 6, wherein the first heat conduction pathway includes a heat spreader disposed internally within a wall of the body of the case at a back portion thereof.

8. The case of claim 7, wherein the heat spreader comprises one or more of a copper heat sink, an aluminum heat sink, a graphite heat sink, and a heat pipe.

9. The case of claim 7, wherein the first heat conduction pathway includes a metal strip imbedded in a wall of the body of the case, the metal strip thermally coupled to the one or more supports and configured to interface with a portion of the eyewear body that comprises part of the articulated joint between the elongate temple and the frame.

10. The case of claim 6, wherein the elongate temple includes a core wire that is disposed therein to form part of a structural framework for the temple, the core wire being thermally coupled to the heat source by a second heat conduction pathway to provide a heat sink for the heat source.

11. The wearable device of claim 10, wherein the core wire is located within the temple and extends longitudinally along the temple from a first longitudinal end portion thereof toward a second longitudinal end portion thereof.

12. The case of claim 10, wherein the first heat conduction pathway and the second heat conduction pathway are configured to provide a thermal coupling to conduct heat to adjacent and across the articulated joint when the temple is in the stowed position and the temple and the frame are received in the case.

13. The case of claim 10, wherein the articulated joint comprises a hinge assembly including a cap hinge that comprises a portion of the thermal coupling, the cap hinge forms a portion of the frame and the hinge assembly, and wherein the cap hinge is an integrally formed portion of a casing of the frame and has a portion extending therefrom, the cap hinge is abutted along one or more internal surfaces disposed within the frame in a conductive heat exchange relationship by one or more heat sinks internal to the frame and is configured to be abutted along one or more external surfaces by at least one of the one or more heat sinks of the first heat conduction pathway.

14. The case of claim 10, wherein the one or more supports comprise a first ledge on a first sidewall of the case and a second ledge on a second sidewall of the case and the wearable device further includes:

a second temple connected to the frame at a second articulated joint, a portion of the frame adjacent the second articulate joint configured to abut the second ledge;

second onboard electronic components carried by the frame and comprising a second heat source that generates heat during electrically powered operation thereof; and

the first heat conduction pathway is connected to both the first ledge and the second ledge and extends to a back portion of the case, the first heat conduction pathway thermally coupled to both the heat source and the second heat source with the eyewear body disposed on the first and second ledges to provide the heat sink for the heat source and the second heat source to direct heat into the case and away from the frame.

15. The case of claim 14, wherein at least one of the first ledge and the second ledge includes a connector configured to couple with one of a charging or data port of the eyewear body.

16. The case of claim 6, wherein the one or more supports include a connector configured to couple with one of a charging or data port of the eyewear body.

17. In combination a case and smart glasses, the smart glasses carry onboard electronic components that comprise a heat source that generates heat during electrically powered operation thereof, the combination comprising:

a case body having a hollow interior defining a holding space configured for holding the smart glasses when the smart glasses are in a stowed position;

a first ledge disposed at a first end of the case body and configured to receive a first end portion of the smart glasses thereon with the smart glasses in the stowed position;

a second ledge disposed at a second end of the case body and configured to receive a second end portion of the smart glasses thereon with the smart glasses in the stowed position;

a connector disposed at least one of the first ledge and the second ledge, the connector configured to couple with one of a charging or data port of the smart glasses; and

a first heat conduction pathway terminating at one or more heat sinks at or adjacent the at least the first ledge, the first heat conduction pathway extending into the case body, the first heat conduction pathway configured to conduct heat from the heat source into case body when the smart glasses are supported in the stowed position.

18. The case of claim 17, wherein the smart glasses comprise:

a frame configured to hold one or more optical elements; and

an elongate temple connected to the frame at an articulated joint, the temple includes a core wire that is disposed therein to form part of a structural framework for the temple, the core wire being thermally coupled to the heat source by a second heat conduction pathway to provide a heat sink for the heat source.

19. The case of claim 18, wherein the first heat conduction pathway and the second heat conduction pathway are configured to provide a thermal coupling to conduct heat to adjacent and across the articulated joint when the temple is in the stowed position and the temple and the frame are received in the case.

20. The case of claim 19, wherein the articulated joint comprises a hinge assembly including a cap hinge that comprises a portion of the thermal coupling, the cap hinge forms a portion of the frame and the hinge assembly, and wherein the cap hinge is an integrally formed portion of a casing of the frame and has a portion extending therefrom, the cap hinge is abutted along one or more internal surfaces disposed within the frame in a conductive heat exchange relationship by one or more heat sinks internal to the frame and is configured to be abutted along one or more external surfaces by at least one of the first ledge, the second ledge and the first heat conduction pathway.