Eyewear device with thermal management device

An electronic eyewear device comprising:

• an eyewear body comprising a frame configured to be worn on the head of a user, the frame comprising an optical elements section and spaced-apart first and second temples, each temple extending rearwardly from the optical elements section and terminating at a temple end portion;
• onboard electronic components carried by the eyewear body at a first portion and comprising a heat source that generates heat during electrically powered operation thereof;
• and
• a thermal management device that receives heat from the heat source, comprising:
• a heat sink within the first temple at a second portion of the eyewear body separated from the first portion by an angled portion extending therein between, wherein the second portion includes the temple end portion;
• and
• a substantially planar thermal coupling disposed within the first temple being thermally coupled to the heat sink, the thermal coupling comprising a first section and a second section and having substantially parallel first and second edges, wherein the second edge of the first section substantially tapers towards the first edge to form a narrower portion of the thermal coupling, and wherein the heat sink in the second portion comprises a battery shield substantially housed within the temple end portion.