Lamp guide device and backlight assembly for liquid crystal display device using the same
View Patent ↗A direct-type backlight assembly for a liquid crystal display device includes a lower case, a plurality of lamps disposed over a first surface of the lower case, a plurality of optical sheets disposed over the first surface of the lower case, and a lamp guide disposed on the first surface of the lower case, the lamp guide including a plate parallel to and disposed on the first surface of the lower case, a sheet supporting portion formed on a first surface of the plate to support the optical sheets, a plurality of lamp holders formed on the first surface of the plate to affix the plurality of lamps therein, and a case connector connected to a second surface of the plate and having a plurality of protrusions facing the second surface of the plate.
1. A direct-type backlight assembly for a liquid crystal display device, comprising:
a lower case;
a plurality of lamps disposed over a first surface of the lower case;
a plurality of optical sheets disposed over the first surface of the lower case; and
a lamp guide disposed on the first surface of the lower case, the lamp guide including a plate parallel to and disposed on the first surface of the lower case, a sheet supporting portion formed on a first surface of the plate to support the optical sheets, a plurality of lamp holders formed on the first surface of the plate to affix the plurality of lamps therein, and a case connector connected to a second surface of the plate and having a plurality of protrusions facing the second surface of the plate.
2. The backlight assembly according to claim 1 , wherein the lower case includes a guide connecting hole for inserting the case connector of the lamp guide.
3. The backlight assembly according to claim 1 , wherein the lower case includes a plurality of concavities to engage the protrusions on a second surface thereof.
4. The backlight assembly according to claim 3 , wherein the lower case includes a guide connecting hole for inserting the case connector of the lamp guide, and a plurality of concavities disposed along a first direction to engage the protrusions on a second surface thereof.
5. The backlight assembly according to claim 4 , wherein the guide connecting hole includes an elongated shape along a second direction.
6. The backlight assembly according to claim 5 , wherein the second direction of the guide connecting hole is offset from the first direction of the plurality of concavities.
7. The backlight assembly according to claim 1 , wherein the sheet supporting portion has a conical shape.
8. The backlight assembly according to claim 1 , further comprising a reflector disposed between the lower case and the plate of the lamp guide.
9. The backlight assembly according to claim 1 , wherein the lamp guide is formed as a molded structure.
10. The backlight assembly according to claim 9 , wherein the plate, the sheet supporting portion, the plurality of lamp holders, and the case connector are formed as a single structure.
11. The backlight assembly according to claim 1 , wherein the plate is disposed parallel to the case connector.
12. The backlight assembly according to claim 11 , wherein each of the protrusions is disposed beneath one of the lamp holders.
13. The backlight assembly according to claim 1 , wherein the plurality of optical sheets include at least one of a diffusing plate and a prism sheet.
14. The backlight assembly according to claim 1 , wherein the plurality of lamp holders include two lamp holders that are disposed at opposing sides of the sheet supporting portion.
15. The backlight assembly according to claim 1 , wherein the plate is connected to the case connector via a connection portion.
16. The backlight assembly according to claim 15 , wherein the connection portion has a cylindrical shape.
17. A lamp guide device, comprising:
a plate;
a sheet supporting portion formed on a first surface of the plate;
a plurality of lamp holders formed on the first surface of the plate to affix a plurality of lamps therein; and
a case connector connected to a second surface of the plate and having a plurality of protrusions facing the second surface of the plate.
18. The lamp guide device according to 17 , wherein the sheet supporting portion has a conical shape.
19. The lamp guide device according to claim 17 , further comprising a reflector disposed on the plate.
20. The lamp guide device according to claim 17 , wherein the plate, the sheet supporting portion, the plurality of lamp holders, and the case connector are formed as a single structure.
21. The lamp guide device according to claim 17 , wherein the plate is disposed parallel to the case connector.
22. The lamp guide device according to claim 21 , wherein each of the protrusions is disposed beneath one of the lamp holders.
23. The lamp guide device according to claim 17 , wherein the plurality of lamp holders include two lamp holders that are disposed at opposing sides of the sheet supporting portion.
24. The lamp guide device according to claim 17 , wherein the plate is connected to the case connector via a connection portion.
25. The lamp guide device according to claim 24 , wherein the connection portion has a cylindrical shape.