| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device using LED as its light source, as well as a backlight unit, a liquid crystal display device and a vehicle lamp unit using the lighting device.SOLUTION: A lighting device includes a plurality of LED light sources formed on a printed circuit board 110 and a reflection unit 120, which has a structure through which the LED light sources are passed, and which is laminated on the printed circuit board. The reflection unit is constituted by a first reflection film 121 and a second reflection film 122 arranged oppositely to face to each other and first adhering pattern layers 123 where the first and second reflection films are adhered and a plurality of unit air cells formed with a first air area therein are communicated to each other and arranged to be closely adhered to each other.EFFECT: To enable a light reflection factor to be improved, brightness improvement to be maximized, brightness to be improved without increasing a thickness of the lighting device and the number of light sources, both light adjustment and light reflection efficiency to be maximized through a pattern design of a spacer member forming the air area.SELECTED DRAWING: Figure 3 |
