There are provided a light emitting diode (LED) device including an LED chip emitting light within a specific wavelength region, a transparent resin layer covering a light emission surface of the LED chip, and a color conversion layer formed to be spaced apart from the LED chip by the transparent resin layer to cover the transparent resin layer and including at least one type of phosphor converting light emitted from the LED chip into light within a different wavelength region, wherein a mean free path of phosphor particles included in the color conversion layer is 0.8 mm or more at a temperature of 5500 K.