| 摘要 |
PURPOSE: A noncombustible flat LED lighting device is provided to prevent a light guide plate from melting by forming a noncombustible coating in both sides of a light guide plate. CONSTITUTION: A light emitting part(30) includes a plurality of LEDs and a PCB(Printed Circuit Board). A light guide plate(10) diffuses light emitted from the LED. A noncombustible coating(50) is formed in both sides of the light guide plate. The noncombustible coating includes a light penetration PC(Polycarbonate) plate(51), a metal sheet(53), and a metal tape(55). The light penetration PC plate covers the light emission surface of the light guide plate. The metal sheet covers the rear side of the light guide plate. The metal tape surrounds the light penetration PC plate, a light guide plate, and the side of the metal sheet. |
