Back-light unit with a reflective support member and display apparatus having the same

1. A light unit comprising:

a bottom cover;

a light source unit in the bottom cover and comprising a light emitting device generating light;

an optical sheet unit on the bottom cover; and

a reflective support member on the bottom cover, the reflective support member comprising:

a reflection plate,

a support unit, and

a holder,

wherein the light source unit comprises a board, and

wherein the holder contacts the board.

2. The light unit according to claim 1 , wherein the holder of the reflective support member is inserted into a holder insertion hole formed in the board and the bottom plate of the bottom cover.

3. The light unit according to claim 1 , wherein the reflection plate covers a region excluding the light emitting device of the light source unit on the bottom plate of the bottom cover.

4. The light unit according to claim 1 , wherein the holder is fixed on a lower surface of the bottom cover using at least one of a hook manner, a screw manner, and a support manner.

5. A display apparatus comprising:

a light unit comprising a bottom cover;

a light source unit comprising a light emitting device generating light in the bottom cover;

an optical sheet unit on the bottom cover;

a reflective support member on the bottom cover, the reflective support member comprising:

a reflection plate,

a support unit, and

a holder; and

a display panel on the optical sheet unit,

wherein the reflection plate and the support unit are formed of substantially the same material,

wherein the light source unit comprises a board on which the light emitting device is mounted, and

wherein the holder contacts the board.

6. The display apparatus according to claim 5 , wherein the reflection plate comprises a light emitting device insertion hole, and the reflection plate is attached on the board.

7. A light unit comprising:

a bottom cover comprising a groove;

a light source unit generating light in the bottom cover;

an optical sheet unit on the bottom cover; and

a reflective support member on the bottom cover, the reflective support member comprising:

a reflection plate for reflecting light,

a guide pin for supporting the optical sheet unit, and

a holder,

wherein the light source unit comprises:

a board between the bottom cover and the reflection plate of the reflective support member; and

wherein the holder contacts the board.

8. The light unit according to claim 7 , wherein the reflection plate and the guide pin are formed of a reflective metal material.

9. The light unit according to claim 8 , wherein the reflective metal material is plated or coated on a surface of the reflection plate.

10. The light unit according to claim 7 , further comprising: a holder hole in the bottom cover,

wherein the holder corresponds to the holder hole.

11. The light unit according to claim 10 , further comprising a hooking threshold provided at an end of the holder; and

a support fit between the bottom plate of the bottom cover and the hooking threshold.

12. The light unit according to claim 10 , wherein the holder radiates heat conducted from the reflection plate and the guide pin to an outside of the bottom cover.

13. The light unit according to claim 10 , further comprising a hook provided at an end of the holder.

14. The light unit according to claim 13 , wherein a hook insertion groove is provided in the holder hole to receive the hook of the holder.

15. The light unit according to claim 10 , wherein the light source unit further comprises:

one or more light emitting devices on the board.

16. The light unit according to claim 15 , wherein the reflection plate is attached on the board using an adhesive.

17. The light unit according to claim 15 , wherein the reflection plate comprises a device insertion hole corresponding to the light emitting device.