Lighting apparatus

Patent metadata

Field	Value
Publication number	US-10139054-B2
Application number	US-201815965211-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	Apr 4, 2011
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

The present invention relates to a lighting apparatus using LEDs as light sources and a display using the lighting apparatus, particularly, the present invention provides a lighting apparatus including: a plurality of light sources located on a printed circuit board; and a reflecting unit provided on the printed circuit board; and a spaced area provided inside the reflective unit.

First claim

What is claimed is:

1. A lighting apparatus comprising:
a board;
a plurality of light sources disposed on the board;
a reflecting unit disposed on the board; and
a resin layer disposed on the reflective unit to cover the light sources,
wherein the reflecting unit comprises a first reflective member on a first surface of the board, a second reflective member spaced apart from the first reflective member, and a spaced member disposed between the first reflective member and the second reflective member,
wherein the first reflective member and the second reflective member comprise a plurality of holes,
wherein at least one of the plurality of light sources is disposed in each hole of the first reflective member and the second reflective member, and
wherein the spaced member comprises a plurality of unit spaced members and a plurality of first spaced areas.

2. The lighting apparatus according to claim 1 , wherein the plurality of unit spaced members are disposed such that each first spaced area of the plurality of first spaced areas is spaced apart from each other first spaced area by the unit spaced members.

3. The lighting apparatus according to claim 1 , wherein the first reflective member comprises white polyethylene terephthalate (PET).

4. The lighting apparatus according to claim 2 , wherein each first spaced area of the plurality of first spaced areas is disposed within a unit spaced member of the plurality of unit spaced members.

5. The lighting apparatus according to claim 1 , wherein at least one first spaced area of the plurality of first spaced areas has a hexagonal cross-sectional shape.

6. The lighting apparatus according to claim 5 , wherein at least one unit spaced member of the plurality of unit spaced members has a hexagonal cross-sectional shape.

7. The lighting apparatus according to claim 1 , wherein at least one unit spaced member of the plurality of unit spaced members has a hexagonal cross-sectional shape.

8. The lighting apparatus according to claim 1 , further comprising a plurality of reflective patterns disposed on an upper surface of the second reflective member.

9. The lighting apparatus according to claim 8 , wherein a density of the plurality of reflective patterns increases in a direction away from the light sources.

10. The lighting apparatus according to claim 1 , further comprising an optical pattern layer disposed on the resin layer,
wherein the optical pattern layer comprises a first substrate, a second substrate, a plurality of optical patterns, and a bonding pattern layer.

11. The lighting apparatus according to claim 10 , wherein the plurality of optical patterns and the bonding pattern layer are disposed between the first substrate and the second substrate.

12. The lighting apparatus according to claim 10 , wherein the bonding pattern layer comprises a second spaced area disposed around the optical pattern and separating the bonding pattern layer from the optical pattern.

13. The lighting apparatus according to claim 10 , wherein a portion of the optical pattern overlaps with the light sources in a direction perpendicular to the first surface of the board.

14. The lighting apparatus according to claim 10 , wherein the optical pattern is implemented with an overlapping structure in which a plurality of patterns overlap each other in a direction perpendicular to the first surface of the board.

15. The lighting apparatus according to claim 1 , wherein the first reflective member is in contact with the first surface of the board.

16. The lighting apparatus according to claim 1 , wherein the first reflective member is in direct physical contact with the spaced member.

17. The lighting apparatus according to claim 16 , wherein the second reflective member is in direct physical contact with the spaced member.

18. The lighting apparatus according to claim 1 ,
wherein an upper surface of the first reflective member, opposite to the lower surface, is in direct physical contact with the spaced member, and
wherein a lower surface of the second reflective member, which faces the upper surface of the first reflective member, is in direct physical contact with the spaced member.

19. The lighting apparatus according to claim 1 , wherein at least one of the unit spaced members of the plurality of unit spaced members is immediately adjacent to and partially contains six first spaced areas of the plurality of first spaced areas.

20. The lighting apparatus according to claim 19 , wherein at least one of the first spaced areas of the plurality of first spaced areas is immediately adjacent and directly contained by six unit spaced members of the plurality of unit spaced members.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Kwang Ho
• Kim Chul Hong
• Park Moo Ryong
• Lee Byoung Eon

Classifications

• B32B2457/202

  LCD, i.e. liquid crystal displays · CPC title

• B32B27/36

  comprising polyesters · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V7/22 Primary

  characterised by materials, surface treatments or coatings, e.g. dichroic reflectors · CPC title