Electrical cord reel with control system to limit overheating

摘要

In an electrical cord reel, a rotatable member can rotate about a winding axis to spool and unspool a linear material. An input power connector can couple to an electrical power source. An output power connector on the rotatable member can couple to an electrical cord at least partially wound about the rotatable member. A switch is adjustable to allow or prevent electrical current flow from the input power connector to the output power connector. One or more temperature sensors detect temperature inside a housing enclosing the rotatable member, output power connector, and a fan. A control system activates the fan if the detected temperature rises from a level below a fan-activation threshold to a level above the fan-activation threshold but below a power shut-off threshold. The control system moves the switch to an open position if the detected temperature is greater than or equal to the power shut-off threshold.