| 摘要 |
Provided is a lighting device comprising: a plurality of LED light sources formed on a printed circuit board; and a reflective unit stacked on the printed circuit board in a structure in which the LED light sources penetrate, wherein the reflective unit comprises a first reflective film and a second reflective film disposed to oppose to each other, and a first adhesive pattern layer which bonds the first and second reflective films, and in which a plurality of unit air cells having a first air area formed in an inner part thereof are closely disposed to communicate with each other. According to the present invention, it is advantageous that the improvement of luminance as well as the improvement of light reflectance can be maximized by providing the reflective unit having an air area to a surface of the printed circuit board. |
