Radiative cooling device
AssigneeOsaka Gas Co., Ltd.
InventorsMasahiro Suemitsu, Tadashi Saito
Life of this patent
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Abstract
A radiative cooling device that can cool a cooling target appropriately with cost reduction of its light reflective layer. An infrared radiative layer for radiating infrared light from a radiative surface and a light reflective layer located on the opposite side of the presence side of the radiative surface of the infrared radiative layer are provided in a mutually stacked manner. 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 the side close to the infrared radiative layer.
Claims7
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.
Dependencies are inferred from the claim text.