Wireless logger device and a method of improving heat transfer from such a logger device

A method of improving heat transfer from a wireless logger device, where the logger device is configured to measure at least one environmental parameter of a shipment while transporting the shipment from an origin location to a destination location and regularly communicate the measured at least one environmental parameter together with position data of the logger device to an external data processing device, where the logger device comprises:

• a housing having an opening,
• at least one sensing device including a temperature sensor for measuring the at least one environmental parameter including temperature within the housing,
• a communication module comprising a modem for communicating the at least one measured environmental parameter to an external data processing device, and
• a display screen configured to be placed in the opening of the housing,
• wherein the method comprises:
• placing the display screen adjacent the modem and in thermal contact with the modem such that the display screen is configured, in addition to display information on the screen, to conduct heat created within the housing from the modem to the outer side of the housing.

A supply chain monitoring system configured to monitor in real time environmental parameters of a shipment while transporting the shipment from an origin location to a destination location, where the system comprises:

• an external data processing device,
• a wireless logger device, comprising:
• a housing having an opening,
• at least one sensing device including a temperature sensor for measuring the at least one environmental parameter including temperature within the housing,
• a communication module comprising a modem for communicating the at least one measured environmental parameter together with position data of the logger device to the external data processing device, and
• a display screen configured to be placed in the opening of the housing, wherein the display screen is positioned adjacent the modem and is in thermal contact with the modem and is configured, in addition to display information on the screen, to conduct heat created within the housing from the modem to an outer side of the housing.