Lightweight portable cooling or heating device with multiple applications

A heating and cooling device comprising:

• a thermoelectric assembly comprising at least one Peltier device and a first plate attached to a Peltier warm surface and a second plate attached to a Peltier cool surface, said first plate and said second plate insulated from one another by insulating means for insulating and discouraging heat transfer between said first plate and said second plate, a radiator affixed to said first plate on a first surface, said radiator having a fan in close proximity for providing air flow and encouraging the transfer of heat energy from said radiator to ambient air, a control circuit for controlling said Peltier device, feedback means for reporting feedback signals to said control circuit for adjusting said Peltier device;
• a gel pack for attachment to said second plate, said gel pack having a flexible shape and containing a filler material mixed with a high thermal conductivity heat transfer material, said heat transfer material for increasing the speed of heat transfer from said second plate through said gel pack;
• and
• a power supply for providing electrical power to said thermoelectric assembly.

A modular cooling and heating device comprising:

• a thermoelectric assembly having a Peltier device with a warm surface and a cool surface, a first plate having a second surface affixed to said warm surface to encourage heat transfer, a radiator affixed to said first plate first surface, a fan attached to said radiator for encouraging heat transfer from said radiator to ambient air, a second plate having a first surface affixed to said Peltier device cool surface to encourage heat transfer, a gel pack containing a viscous filler material and a high thermal conductivity heat transfer material, said gel pack adjacent said second plate for enhancing the transfer of heat energy from said second plate, a control circuit attached to said radiator and interconnected to said Peltier device, fan, and a feedback means, said feedback means for providing feedback to said control circuit;
• a holder having at least one module opening for containing said thermoelectric assembly in a fixed position;
• and
• power means for supplying power to said thermoelectric assembly.