US Patent 10499516 Field serviceable and replaceable assembly

A field serviceable assembly includes a frame with a first and second side assembly hingedly mounted on opposite sides to define a cavity. The first side assembly includes a transparent layer positioned in front of an electronic display to define a first channel. A second channel is located behind the electronic display. A second side assembly includes a cover located in front of a plate to define a third channel. A closed loop pathway for circulating gas is formed by the first channel and the cavity. Open loop pathways for ambient air are formed by the second and third channels.