Cooling system and projection-type image display apparatus using the same

• US 20050265001A1
• Filed: 05/24/2005
• Published: 12/01/2005
• Est. Priority Date: 05/31/2004
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Saito, Tomonori
• Granted Patent: US 7,275,833 B2
• Time in Patent Office: Days
• US Class Current: 361/710
• CPC Class Codes: H01L 2023/405 heatsink to package
• CPC Class Codes: H01L 2023/4087 Mounting accessories, interposers, clamping or screwing parts
• CPC Class Codes: H01L 23/4006 with bolts or screws
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A cooling system for cooling a semiconductor device including a display device provided in a projection-type image display apparatus with high cooling efficiency without sacrificing cooling performance is disclosed. The cooling system includes a radiating member provided with a convex-shaped heat-receiving portion thermally connected to a heat-generating element mounted on a printed circuit board, and a supporting member provided with an opening penetrating the heat-receiving portion, and a supporting portion for supporting the radiating member. The radiating member is integrally formed of a plurality of radiating fins, a base for supporting and fixing the plurality of radiating fins at one side thereof, and the convex-shaped heat-receiving portion disposed at a bottom face of the base, and the supporting member supports the radiating member from a bottom face of the base.

Claims

1. A cooling system comprising:

a radiating member provided with a convex-shaped heat-receiving portion thermally connected to a heat-generating element mounted on a printed circuit board; and

a supporting member provided with an opening penetrating the heat-receiving portion, and a supporting portion for supporting the radiating member,

wherein the radiating member is integrally formed of a plurality of radiating fins, a base for supporting and fixing the plurality of radiating fins at one side thereof, and the convex-shaped heat-receiving portion disposed at a bottom face of the base, and wherein the supporting member supports the radiating member from a bottom face of the base.

2. The cooling system according to claim 1, wherein the supporting member is fixed to a fixing member provided outside through the printed circuit board.

3. The cooling system according to claim 1, wherein the supporting member is fixed by a screw to a boss portion of a fixing member provided outside through the printed circuit board.

4. The cooling system according to claim 1, further comprising:

a mounting member for fixing the heat-generating element by pressing a peripheral part of the heat-generating element toward the printed circuit board.

5. The cooling system according to claim 1, wherein a reinforcing plate having an opening portion penetrating the heat-receiving portion is provided between the supporting member and the printed circuit board.

6. The cooling system according to claim 1, wherein the supporting member is provided with a plate-shaped latching portion having a latching hole disposed at both ends of the supporting member facing each other, and wherein the radiating member is supported by latching a projection disposed at both side faces of the base of the radiating member facing each other with the latching hole.

7. The cooling system according to claim 1, wherein the supporting member is a plate-shaped member, and wherein the supporting member supports the radiating member by fixing the supporting member onto the bottom face of the base by a screw.

8. The cooling system according to claim 1, wherein the supporting member is formed in a plate-shape capable of elastic deformation, and the-heat-receiving portion and the heat-generating element are pressed towards each other by an elastic force produced by the supporting member to be fixed to a fixing member provided outside through the printed circuit board.

9. A cooling system comprising:

a fixing member having a light opening for passing light from a light source;

a display device provided with a reflecting face facing the light opening and reflecting the light;

a printed circuit board on which the display device is mounted;

a radiating member provided with a convex-shaped heat-receiving portion thermally connected to a heat-generating face of the display device; and

a supporting member provided with an opening penetrating the heat-receiving portion and a supporting portion for supporting the radiating member,

wherein the radiating member is integrally formed of a plurality of radiating fins, a base for supporting and fixing the plurality of radiating fins at one side thereof, and the convex-shaped heat-receiving portion disposed at a bottom face of the base, and wherein the supporting member supports the radiating member from a bottom face of the base.

10. The cooling system according to claim 9, wherein the supporting member is fixed to the fixing member through the printed circuit board.

11. The cooling system according to claim 9, wherein the supporting member is fixed by a screw to a boss portion provided in the fixing member through the printed circuit board.

12. The cooling system according to claim 9, further comprising:

a mounting member for fixing the display device by pressing a peripheral part of the display device toward the printed circuit board.

13. The cooling system according to claim 9, wherein a reinforcing plate having an opening portion for penetrating the heat-receiving portion is provided between the supporting member and the printed circuit board.

14. The cooling system according to claim 9, wherein the supporting member is provided with a plate-shaped latching portion having a latching hole disposed at both ends of the supporting member facing each other, and wherein the radiating member is supported by latching a projection disposed at both side faces of the base of the radiating member facing each other with the latching hole.

15. The cooling system according to claim 9, wherein the supporting member is a plate-shaped member, and wherein the supporting member supports the radiating member by fixing the supporting member onto the bottom face of the base by a screw.

16. The cooling system according to claim 9, wherein the supporting member is formed in a plate-shape capable of elastic deformation, and the heat-receiving portion and the heat-generating face of the display device are pressed towards each other by an elastic force produced by the supporting member to be fixed to the fixing member through the printed circuit board.

17. A projection-type image display apparatus comprising:

a light source for generating light;

a projection lens unit for projecting an image onto a screen provided outside;

a fixing member having a light opening portion for passing the light from the light source;

a display device provided with a reflection face facing the light opening portion and reflecting the light;

a printed circuit board on which the display device is mounted;

a radiating member provided with a convex-shaped heat-receiving portion thermally connected to a heat-generating face of the display device; and

a supporting member provided with a supporting portion for supporting the radiating member and an opening portion penetrating the heat-receiving portion,

wherein the radiating member is integrally formed of a plurality of radiating fins, a base for supporting and fixing the plurality of radiating fins at one side thereof, and the convex-shaped heat-receiving portion disposed at a bottom face of the base, and wherein the supporting member supports the radiating member from a bottom face of the base.

18. The projection-type image display apparatus according to claim 17, wherein the supporting member is fixed to the fixing member through the printed circuit board.

19. The projection-type image display apparatus according to claim 17, wherein the supporting member is fixed by a screw to a boss portion provided in the fixing member through the printed circuit board.

20. The projection-type image display apparatus according to claim 17, further comprising:

a mounting member for fixing the display device by pressing a peripheral part of the display device toward the printed circuit board.

21. The projection-type image display apparatus according to claim 17, wherein a reinforcing plate having an opening portion penetrating the heat-receiving portion is provided between the supporting member and the printed circuit board.

22. The projection-type image display apparatus according to claim 17, wherein the supporting member is provided with a plate-shaped latching portion having a latching hole disposed at both ends of the supporting member facing each other, and wherein the radiating member is supported by latching a projection disposed at both side faces of the base of the radiating member facing each other with the latching hole.

23. The projection-type image display apparatus according to claim 17, wherein the supporting member is a plate-shaped member, and wherein the supporting member supports the radiating member by fixing the supporting member onto the bottom face of the base by a screw.

24. The projection-type image display apparatus according to claim 17, wherein the supporting member is formed in a plate-shape capable of elastic deformation, and the heat-receiving portion and the heat-generating face of the display device are pressed towards each other by an elastic force produced by the supporting member fixed to the fixing member through the printed circuit board.