▎ 摘　　要

NOVELTY - The device has a radiative cooling element. The radiative cooling element includes a material or device having the capability to radiating infrared electromagnetic waves corresponding to a radiant atmospheric window. A thermoelectric power generation element includes a material with a thermoelectric effect. A heat insulating element includes a thermal insulating material. A temperature conducting element (30) includes a material with a high thermal conductivity and a high absorption rate of solar radiant energy. A wire is connected to thermoelectric power generation element for electrical energy output. The cold end face of thermoelectric power generation element is connected to the radiation cooling element (10). The thermoelectric power generation element is connected to thermal conduction element. The heat insulating element (40) is sleeved around thermoelectric power generation element. The temperature conducting element is installed on outer surface of any outdoor object. USE - The device is useful for generating electricity in full day and off-grid. Can also be used in petroleum, coal, natural gas and other non-renewable energy, and high efficiency power supply e.g. roof, roof, aircraft, ship, train, balcony, fire-hydrant, streetlamp and bulletin board without bound by terrain. ADVANTAGE - The device: has simple structure and small volume; and radiates heat by radiation cooling to reduce greenhouse effect and reach a lower temperature. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of temperature difference generating device based on radiation cooling. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the temperature difference generating device based on radiation cooling. Radiation cooling element (10) Temperature difference generating element (20) Temperature conducting element (30) Heat insulating element (40)