Lighting apparatus

1. A lighting apparatus comprising:

a plurality of light sources located on a printed circuit board;

a reflecting unit provided on the printed circuit board; and

a spaced area provided entirely inside, and completely surrounded by, the reflecting unit,

wherein the reflecting unit includes:

a first reflective member on a surface of the printed circuit board;

a second reflective member spaced from the first reflective member and forming the spaced area; and

a spaced member comprising a solid material between the first reflective member and the second reflective member, and

wherein the spaced member includes at least one hollow unit within the solid material of the spaced member forming a first spaced portion.

2. The lighting apparatus of claim 1 , wherein the spaced member contains thermoset PSA, a thermoset adhesive, or a UV-curable PSA type material.

3. A lighting apparatus comprising:

a plurality of light sources located on a printed circuit board;

a reflecting unit provided on the printed circuit board; and

a spaced area provided inside the reflecting unit;

wherein the reflecting unit includes a first reflective member on a surface of the printed circuit board, a second reflective member spaced from the first reflective member and forming the spaced area, and a spaced member between the first reflective member and the second reflective member;

wherein the spaced member includes at least one hollow unit forming a first spaced portion; and

wherein the spaced member further includes a plurality of unit spaced members spaced apart from each other, and a second spaced portion is provided between the plurality of unit spaced members.

4. The lighting apparatus of claim 3 , wherein the first reflective member includes a second base member stacked on a first base member and a metal layer stacked on the second base member.

5. The lighting apparatus of claim 3 , wherein the first reflective member is white PET.

6. The lighting apparatus of claim 3 , wherein the spaced member contains thermoset PSA, a thermoset adhesive, or a UV-curable PSA type material.

7. The lighting apparatus of claim 3 , wherein the second reflective member further includes a reflective pattern formed on a surface thereof.

8. The lighting apparatus of claim 7 , wherein the reflective pattern contains any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and PS.

9. The lighting apparatus of claim 3 , further comprising a light guide member formed on the reflecting unit to cover the light sources.

10. The lighting apparatus of claim 9 , wherein the light guide member further includes a resin layer, and a light diffuser of 0.01-0.3 wt % of the entire weight of the resin layer which increases reflection of light within the resin layer.

11. The lighting apparatus of claim 9 , further comprising an optical pattern layer located on the light guide member and having an optical pattern.

12. The lighting apparatus of claim 11 , wherein the optical pattern is made of a material containing any one or more selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and PS.

13. A lighting apparatus comprising:

a plurality of light sources located on a printed circuit board;

a reflecting unit provided on the printed circuit board;

a spaced area provided inside the reflecting unit;

a light guide member formed on the reflecting unit to cover the light sources; and

an optical pattern layer located on the light guide member and having an optical pattern;

wherein the reflecting unit includes a first reflective member on a surface of the printed circuit board and a second reflective member spaced from the first reflective member and forming the spaced area; and

wherein the optical pattern layer includes a bonding pattern layer defining a second spaced area surrounding the optical pattern.

14. The lighting apparatus of claim 13 , wherein the optical pattern layer is provided between a first substrate and a second substrate which include the optical pattern therein.

15. The lighting apparatus of claim 13 , wherein a plane shape of the second spaced area includes any one of a circle, an ellipse, a rectangle, a square, and a polygon.

16. The lighting apparatus of claim 13 , further comprising a diffusion member disposed on the optical pattern layer.

17. The lighting apparatus of claim 16 , further comprising a spaced module having a third spaced area between the optical pattern layer and the diffusion member.

18. The lighting apparatus of claim 17 , wherein the spaced module is formed in a lower portion of the diffusion member in an integral structure.

19. The lighting apparatus of claim 17 , wherein the spaced module is provided as an independent spacer member in the lower portion of the diffusion member.