Patent ID: 8740402

Claim:
An LED downlight mounted onto a construction wall panel which includes a decorative surface, a mask surface and an installation port communicating with the decorative surface and the mask surface, the LED downlight comprising: a light source module which is located on one side of the construction wall panel where the decorative surface is formed and includes a light projection portion to generate illumination light, a base to hold the light projection portion and a first coupling portion connecting to the base and running through the installation port; and a heat sink holder which is located on another side of the construction wall panel where the mask surface is formed and includes a second coupling portion corresponding to the first coupling portion for fastening together and a first cooling portion formed on an outer surface of the heat sink holder and extended along an extension direction of the mask surface; wherein the base and the first cooling portion include respectively a first clamp surface corresponding to the decorative surface and a second clamp surface corresponding to the mask surface, the first clamp surface and the second clamp surface being respectively in contact with the decorative surface and the mask surface to clamp the construction wall panel.