| 摘要 |
PURPOSE: Since the LED lighting device can raise the high intensity LED and the equivalent illuminance, the manufacturing cost of the LED lighting device is reduced. CONSTITUTION: A plurality of LEDs(20) is arranged in the upper side of the substrate(10) and the light is vented. The lens(30) of cupola-shape covers and accepts LED and substrate. The light which the lens of cupola-shape vents in LED is transmitted and it emits to outside. A pair of prism sheets(50) is laminated in the prism light guide plate(40). |
