US 11,739,909 B2
Lighting device
Masafumi Okada, Tokyo (JP); Nobuyuki Suzuki, Tokyo (JP); and Makoto Hasegawa, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jul. 13, 2022, as Appl. No. 17/863,456.
Claims priority of application No. 2021-120153 (JP), filed on Jul. 21, 2021.
Prior Publication US 2023/0027661 A1, Jan. 26, 2023
Int. Cl. F21V 7/04 (2006.01); G03B 21/20 (2006.01); F21Y 115/10 (2016.01)
CPC F21V 7/041 (2013.01) [G03B 21/2066 (2013.01); F21Y 2115/10 (2016.08)] 6 Claims
OG exemplary drawing
 
1. A lighting device comprising a structure having a plurality of light source units adjacently disposed,
wherein the plurality of light source units include a first light source unit and a second light source unit,
the first light source unit includes a first funnel shaped reflector having a first opening and a first neck, and a first LED, which is disposed at the first neck,
the second light source unit includes a second funnel shaped reflector having a second opening and a second neck, and a second LED, which is disposed at the second neck,
a plan view of the first opening and the second opening are a rectangle, and
provided a distance from the neck to the opening along an optical axis is d, and one side of the rectangle is x,
the first light source unit and the second light source unit satisfies d/x is 2 or larger, and
a first distance from the first neck to the first opening along the optical axis is greater than a second distance from the second neck to the second opening along the optical axis.