LED lighting is sensitive because made by semiconductor. So it has been researched about radiation of heat technologies for long time. In addition, measurement and assessment a radiation of heat also conducted. It is necessary to get a date of accuracy temperature on the board after LED driven for measuring Junction temperature of LED Lighting. For this research we use 5 chip which is 4 W power on top of LED lighting board made by aluminum. Thermal camera effects to emissivity depending on material and property of surface in LED board because it determines thermal energy which emitted from material surface. It is not only thermal camera has not a standard about emissivity. It has an error of temperature when emissivity was measured by thermal camera. We confirmed that emissivity and reflected temperature depending on color and quality of surface throughout experiment.
