| 摘要 |
The present invention relates to an advertisement panel using an LED, and more specifically, to an advertisement panel using an LED for preventing the compression and expansion of a printed circuit board by heat at high temperatures of the LED and extending the lifetime of the LED and peripheral components due to the prevention of moisture insertion. The present invention prevents the compression and the generation of bubble generated when hardening transparent urethane of a first resin layer inside the advertisement panel by stacking the second resin layer. The present invention can prevent yellow color phenomenon which generates discoloration by ultraviolet rays by the second resin layer consisting of urethane. |
