DISPLAY APPARATUS

• US 20100321887A1
• Filed: 08/07/2008
• Published: 12/23/2010
• Est. Priority Date: 08/30/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Soon Koo, Hyun, Jae Min, Kwon, Oh Kwan, Lee, Kyung Won
• Granted Patent: US 8,035,968 B2
• Time in Patent Office: Days
• US Class Current: 361/695
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: H05K 7/20972 Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

A display unit is disclosed. A display apparatus includes a panel unit displaying images, a circuit unit provided a rear surface of the panel unit, a chamber surrounding the circuit unit, the chamber forming a predetermined space and at least one ventilation fan ventilating air inside the chamber along a circulation path passing beyond the circuit unit. According to a display apparatus according to the present invention, parts which are mounted in the display apparatus may be protected from external moisture or dust. Furthermore, heat radiation may be performed efficiently in the display apparatus according to the present invention even if environments of heat exchanging with an outside may not be formed enough in a structure of the display apparatus.

Claims

1. A display apparatus comprising:

a panel unit displaying images;

a circuit unit provided a rear surface of the panel unit;

a chamber surrounding the circuit unit, the chamber forming a predetermined space; and

at least one ventilation fan ventilating air inside the chamber along a circulation path passing beyond the circuit unit.

2. The display apparatus of claim 1, wherein the circulation path passes beyond different parts mounted on the circuit unit.

3. The display apparatus claim 2, wherein the circulation path is formed in the chamber in plural.

4. The display apparatus of claim 1, wherein the circulation path passes beyond a high density area where parts are intensively mounted on the circuit unit with a high density and a relatively low density area where parts are mounted on the circuit unit with a relatively low density.

5. The display apparatus of claim 4, further comprising:

a partition member partitioning off the high density area and the low density area.

6. The display apparatus of claim 5, wherein the partition member partitions the space of the chamber into a right and left space, an upper and lower end of the partition member being spaced apart from the chamber only to form a gap, and the circulation path passes through the gap.

7. The display apparatus of claim 6, wherein the circulation path is a closed path which reciprocates the right and the left space partitioned by the partition member.

8. The display apparatus of claim 5, wherein the at least one of the plural ventilation fans is provided near an upper end of the high density area to ventilate the air passing the high density area to the low density area along the circulation path.

9. The display apparatus of claim 8, further comprising at least one ventilation fan provided at a predetermined position except in the high density area.

10. The display apparatus of claim 5, wherein the chamber comprises a radiation plate radiating heat inside the chamber and a frame supporting the radiation plate, and the partition member is in contact with an inner surface of the radiation plate and an upper surface of the circuit unit.

11. The display apparatus of claim 10, wherein if the circulation path is formed in the chamber in plural, each of the circulation paths passes through a ventilation opening formed at the partition member.

12. The display apparatus of claim 11, wherein a ventilation fan is mounted at the ventilation opening.

13. The display apparatus of claim 10, wherein a guide is formed at a corner of the frame.

14. The display apparatus of claim 10, wherein at least one guide member or guide duct is provided in at least one corner of the chamber to guide the air circulating the circulation path, respectively.

15. The display apparatus of claim 10, wherein the ventilation fan is provided at an end of the guide duct.

16. The display apparatus of claim 10, wherein a plurality of radiation pins are provided on an inner surface of the radiation plate, facing the circuit unit.

17. The display apparatus of claim 16, wherein the plurality of the radiation pins are arranged in parallel with the circulation path.

18. The display apparatus of claim 17, the length of the radiation pin provided beyond the high density area is substantially shorter than the length of the radiation pin provided beyond the low density area.

19. The display apparatus of claim 10, further comprising:

a heat transfer member connecting the radiation plate beyond the high density area with a circuit substrate of the high density area.

20. The display apparatus of claim 5, wherein the partition member is a track-shaped ring formed of a sheet.

21. A display apparatus comprising:

a panel unit displaying images;

a circuit unit connected with an external power to process the images displayed at the panel unit;

a circuit housing surrounding the circuit unit to form a predetermined space, the circuit housing formed of metal to radiate heat generated from the circuit unit to an outside; and

at least one ventilation fan circulating air inside the circuit housing to reduce variations of surface temperatures of the circuit housing heated by the heat generated at the circuit unit.

22. The display apparatus of claim 21, further comprising at least one temperature sensor measuring a temperature inside the circuit housing, wherein a rotation speed of the ventilation fan is adjustable.

23. The display apparatus of claim 22, further comprising a partition member partitioning an inner space of the circuit unit into predetermined two spaces.

24. The display apparatus of claim 23, wherein the ventilation fan circulate the air inside the circuit housing to the partitioned spaces.

25. A display apparatus comprising:

a panel unit displaying images;

a circuit unit comprising a circuit substrate where a plurality of circuit parts are mounted;

a circuit housing surrounding the circuit unit, the circuit housing being sealed; and

an air ventilation fan transferring the heat generated from the circuit unit to other portions of the circuit housing.