# US 12,222,584 B2 · Wearable device with heat transfer pathway > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,222,584 B2 - Document ID: US12222584B2 - Status: Granted - Kind: B2 - Application number: 18/375,719 - Filed: 2023-10-02 - Published: 2024-01-25 - Granted: 2025-02-11 - Earliest claimed: 2016-02-29 - Assignees: Snap Inc. - Applicants: Snap Inc. - Inventors: Andrea Ashwood - Web page: https://patentgrep.com/patent/US12222584B2 ## CPC - G02C 5/22: Hinges (pivotal connection in general F16C11/00) - A45C 11/04: Spectacle cases; Pince-nez cases - G02B 27/017: {Head mounted} - G02C 5/001: {specially adapted for particular purposes, not otherwise provided for or not fully classifiable according to technical characteristics, e.g. therapeutic glasses} - G02C 5/14: Side-members - G02C 5/143: {having special ear pieces} - G02C 11/10: {Electronic devices other than hearing aids} - G06F 1/163: {Wearable computers, e.g. on a belt} - 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)} - H05K 7/20445: {the coupling element being an additional piece, e.g. thermal standoff} - G02B 2027/0138: {comprising image capture systems, e.g. camera} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) - A45C: PURSES; LUGGAGE; HAND CARRIED BAGS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A wearable device is disclosed according to one embodiment. The wearable device can include an eyewear body, onboard electronic components, a thermal coupling and a heat transfer device. The eyewear body can be configured for wearing by a user to hold one or more optical elements mounted on the eyewear body within a field of view of the user. The onboard electronic components can be carried by the eyewear body at a first portion of the eyewear body and can comprise a heat source that generates heat during electrically powered operation thereof. The thermal coupling can be thermally coupled to the heat transfer device at a second portion of the eyewear body. The elongate heat transfer device can be disposed within the eyewear body and can be thermally coupled to the heat source and the thermal coupling. The heat transfer device can extend lengthwise between the heat source and the thermal coupling to transfer heat from the heat source to the thermal coupling. ## Claims ### Claim 1 A wearable device comprising: an eyewear body configured for wearing by a user to hold one or more optical elements mounted on the eyewear body within a field of view of the user; temples for supporting the eyewear body when worn by the user; onboard electronic components carried by one or both of the eyewear body and at least one of the temples, wherein the onboard electronics components comprise a heat source that generates heat during electrically powered operation thereof; and an elongate heat transfer device thermally coupled to the heat source to transfer heat away from the heat source to another portion of the eyewear body or the at least one of the temples; wherein the onboard electronic components are carried by the eyewear body and the elongate heat transfer device extends longitudinally rearward and extends across a hinge assembly that connects the temple to the eyewear body to transfer heat from the eyewear body to the at least one of the temples. ### Claim 2 (depends on 1) The wearable device of claim 1, wherein the elongate heat transfer device is disposed within the eyewear body, and wherein the elongate heat transfer device is configured to transfer heat from the heat source to an interface with the at least one of the temples. ### Claim 3 (depends on 1) The wearable device of claim 1, wherein the elongate heat transfer device extends lengthwise across the eyewear body between the heat source and a second end portion of the eyewear body that extends longitudinally rearward to interface with a second elongate temple. ### Claim 4 (depends on 3) The wearable device of claim 3, further comprising a first thermal coupling thermally coupled to the elongate heat transfer device at one of a first end portion or a second end portion of the eyewear body, wherein the first thermal coupling comprises one or more of a heat sink, a core wire, and a heat pipe. ### Claim 5 (depends on 1) The wearable device of claim 1, wherein the elongate heat transfer device comprises a core wire configured to form part of a structural eyewear bodywork for at least part of the eyewear body. ### Claim 6 (depends on 5) The wearable device of claim 5, further comprising a second core wire located in at least one of the temples, and wherein the second core wire is configured to form a part of a structural eyewear bodywork of the at least one of the temples. ### Claim 7 (depends on 6) The wearable device of claim 6, further comprising a thermal coupling thermally coupled to the second core wire and the core wire and configured to transfer heat from the core wire of the eyewear body to the second core wire of the at least one of the temples. ### Claim 8 (depends on 1) The wearable device of claim 1, wherein the elongate heat transfer device comprises a heat pipe having a wick extending along at least a portion of a lateral length thereof, the heat pipe configured to carry a working fluid that is evaporated to a vapor at a first lateral end portion thereof by the heat from the heat source and direct the vapor to a second lateral end portion thereof where the vapor condenses back to the working fluid and is absorbed by the wick. ### Claim 9 A pair of smart glasses, the smart glasses comprising: an eyewear body configured to hold one or more optical elements, the eyewear body having a first lateral portion disposed to a first side of the one or more optical elements and an opposing second lateral portion disposed to a second side of the one or more optical elements; onboard electronic components carried by the eyewear body within the first lateral portion and comprising a heat source that generates heat during electrically powered operation thereof; a first temple connected to the eyewear body at the first lateral portion by a first articulated joint; and an elongate heat transfer device thermally coupled to the heat source to transfer heat away from the heat source to another portion of the eyewear body; wherein at least a portion of the heat transferred by the elongate heat transfer device is passed from the first lateral portion to the first temple across the first articulated joint. ### Claim 10 (depends on 9) The smart glasses of claim 9, wherein the elongate heat transfer device extends laterally along the eyewear body from the first lateral portion of the eyewear body to a second lateral portion of the eyewear body, wherein the elongate heat transfer device is thermally coupled to the heat source at the first lateral portion and configured to transfer the heat from the heat source to the second lateral portion of the eyewear body. ### Claim 11 (depends on 9) The smart glasses of claim 9, further comprising a thermal coupling that comprises at least a first portion of the first articulated joint, the thermal coupling having a second portion that forms a rearward facing portion of the eyewear body arranged to generally interface with a forward facing portion of the first temple when worn by user, wherein the thermal coupling configured to conduct the heat away from the eyewear body across the first articulated joint to the first temple. ### Claim 12 (depends on 11) The smart glasses of claim 11, wherein the thermal coupling comprises one or more of a heat sink, a core wire, and a heat pipe. ### Claim 13 (depends on 11) The smart glasses of claim 11, further comprising: a second temple connected to the eyewear body at the second lateral portion by a second articulated joint; and a second thermal coupling comprising least a first portion of the second articulated joint, the second thermal coupling having a second portion carried by the eyewear body and arranged to generally interface an end portion of the second temple, the second thermal coupling configured to conduct the heat away from the elongate heat transfer device across the second articulated joint to the second temple. ### Claim 14 (depends on 9) The smart glasses of claim 9, wherein the elongate heat transfer device comprises a core wire configured to form part of a structural eyewear bodywork for at least part of the eyewear body. ### Claim 15 (depends on 9) The smart glasses of claim 9, wherein the elongate heat transfer device comprises a heat pipe having a wick extending along at least a portion of a lateral length thereof, the heat pipe configured to carry a working fluid that is evaporated to a vapor at a first lateral end portion thereof by the heat from the heat source and direct the vapor to a second lateral end portion thereof where the vapor condenses back to the working fluid and is absorbed by the wick. ### Claim 16 A pair of smart glasses, the smart glasses comprising: an eyewear body configured to hold one or more optical elements; onboard electronic components carried by the eyewear body and comprising a heat source that generates heat during electrically powered operation thereof, and a heat transfer device configured to transfer the heat from the heat source to a first articulated joint that connects the eyewear body to a first elongate temple. ### Claim 17 (depends on 16) The smart glasses of claim 16, further comprising a first temple connected to the eyewear body at a first lateral portion by the first articulated joint, wherein the first temple has a core wire configured to form part of a structural eyewear bodywork for at least part of the first temple, wherein the core wire comprises a heat sink configured to transfer the heat from the heat source. ### Claim 18 (depends on 17) The smart glasses of claim 17, wherein the heat sink comprises at least a first portion of the first articulated joint and a portion of the eyewear body arranged to generally interface an end portion of the first temple. ### Claim 19 (depends on 18) The smart glasses of claim 18, further comprising: a second temple connected to the eyewear body by a second articulated joint; and a second heat sink comprising least a first portion of the second articulated joint, the second heat sink having a second portion carried by the eyewear body and arranged to generally interface an end portion of the second temple, the second heat sink configured to conduct the heat away from the heat transfer device across the second articulated joint to the second temple.