Lighting device

Patent metadata

Field	Value
Publication number	US-9587797-B2
Application number	US-201414478793-A
Country	US
Kind code	B2
Filing date	Sep 5, 2014
Priority date	Mar 7, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

Provided is a lighting device, including: a printed circuit board; one or more light emitting units formed on the printed circuit board; a resin layer which is formed on the printed circuit board, in which the light emitting units are embedded; a diffusion plate formed on an upper side of the resin layer, whereby an entire thickness of the lighting device can be reduced, and when the product is designed, a degree of freedom in design can be improved because flexibility is secured.

First claim

What is claimed is:

1. A lighting device, comprising:
a printed circuit board;
one or more light emitting units disposed on the printed circuit board;
a resin layer which is disposed on the printed circuit board, in which the light emitting units are embedded;
a light reflection unit disposed on a side surface of the resin layer and a side surface of the printed circuit board; and
a reflection member disposed between the printed circuit board and the resin layer, wherein the light emitting units are arranged in one or more openings of the reflection member.

2. The lighting device of claim 1 , wherein the light reflection unit is formed of a material including a white pigment or a metal.

3. The lighting device of claim 1 , wherein the light reflection unit is formed in a structure in which the light reflection unit is directly adhered to the resin layer, or a structure in which the light reflection unit is adhered to the resin layer using an adhesive material.

4. The lighting device of claim 1 , further comprising a light reflection unit supporting unit which is disposed on an outer surface of the light reflection unit.

5. The lighting device of claim 1 , further comprising an indirect radiation unit which is disposed to be spaced apart from the resin layer and scatters and reflects light irradiated from the light emitting units.

6. The lighting device of claim 1 , wherein the resin layer comprises an ultraviolet curing resin including an oligomer.

7. The lighting device of claim 6 , wherein the oligomer comprises material selected from urethane acrylate, epoxy acrylate, polyester acrylate, and acrylic acrylate.

8. The lighting device of claim 1 , wherein the printed circuit board comprises a flexible printed circuit board.

9. The lighting device of claim 1 , wherein the light emitting units comprises side view type light emitting diodes.

10. The lighting device of claim 1 , further comprising a diffusion plate on the resin layer, wherein a first air gap is formed between the resin layer and the diffusion plate.

11. The lighting device of claim 1 , wherein a reflection pattern is disposed on the reflection member.

12. The lighting device of claim 1 , further comprising an optical pattern layer disposed on the resin layer and diffuses light of the light emitting units.

13. The lighting device of claim 12 , wherein the optical pattern layer comprises:
a first optical sheet disposed on an upper surface of the resin layer;
a second optical sheet disposed on the first optical sheet; and
an optical pattern disposed between the first and second optical sheets for shielding or reflecting the light.

14. The lighting device of claim 13 , wherein the optical pattern is formed in a structure in which a diffusion pattern including one or more materials selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , and silicon overlaps with a light shielding pattern including Al or a mixture of Al and TiO 2 .

15. A lighting device, comprising:
a printed circuit board;
one or more light emitting units disposed on the printed circuit board;
a resin layer formed on the printed circuit board, in which the light emitting units are embedded;
a reflection member disposed between the printed circuit board and the resin layer; and
an indirect radiation unit to be spaced apart from the resin layer and that scatters and reflects light irradiated from the light emitting units;
wherein the light emitting units are arranged in one or more openings of the reflection member; and
wherein the indirect radiation unit comprises a light reflection unit disposed at a side of the resin layer, and an indirect radiation air gap disposed between the side of the resin layer and the light reflection unit.

16. The lighting device of claim 15 , wherein the light reflection unit is formed of a material including a white pigment or a metal.

17. A lighting device, comprising:
a printed circuit board;
one or more light emitting units disposed on the printed circuit board;
a resin layer disposed on the printed circuit board, in which the light emitting units are embedded;
a supporting unit disposed at an outer surface of the resin layer and a lower surface of the printed circuit board; and
a reflection member disposed between the printed circuit board and the resin layer.

18. The lighting device of claim 17 , wherein the supporting unit is formed of a plastic material.

19. A lighting device, comprising:
a printed circuit board;
one or more light emitting units which are formed on the upper surface of the printed circuit board for emitting a light to a lateral direction extended along with the upper surface of the printed board and which are arranged in a zigzag shape for emitting the light to facing directions of the lateral direction;
a resin layer disposed on the printed circuit board, in which the light emitting units are embedded; and
a light reflection unit disposed on a side surface of the resin layer and a side surface of the printed circuit board.

20. The lighting device of claim 19 , further comprising a spaced space between the resin layer and the light reflection unit, wherein the light reflection unit and the spaced space scatter and reflect light irradiated from the light emitting units for forming an indirect light source on one or more side surfaces of the resin layer.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Moo Ryong
• Kim Chul Hong
• Park Kwang Ho

Classifications

• G02B6/0035

  provided on the surface of the light guide or in the bulk of it · CPC title

• H05K3/387

  for electroless plating (H05K3/4661 takes precedence) · CPC title

• F21V13/12

  Combinations of only three kinds of elements · CPC title

• G02B6/0041

  provided in the bulk of the light guide · CPC title

• F21S43/249

  with two or more light sources being coupled into the light guide · CPC title