Patent ID: 11951710
Assignee: OSAKA GAS CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B  F  G | IPC B  F

Claim 0:
1. A radiative cooling device comprising:
an infrared radiative layer for radiating infrared light from a radiative surface; and
a light reflective layer disposed on an opposite side of a presence side of the radiative surface of the infrared radiative layer,
wherein the infrared radiative layer and the light reflective layer are provided in a mutually stacked state,
wherein the light reflective layer is arranged such that a first layer made of silver or silver alloy and a second layer made of aluminum or aluminum alloy are stacked with the first layer being disposed on a side of the light reflective layer close to the infrared radiative layer,
wherein the first layer has a thickness of 50 nm or greater and 100 nm or less, and
wherein the second layer has a thickness of 25 nm or greater and 50 nm or less.