Thermal conductors in electronic devices

• US 8,675,363 B2
• Filed: 07/26/2011
• Issued: 03/18/2014
• Est. Priority Date: 07/26/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Crooijmans, Wilhelmus, Een, Joshua
• Primary Examiner(s): Datskovskiy, Michail V
• Application Number:
  US13/191,071
• Publication Number:
  US 20130027886A1
• Time in Patent Office: 966 Days
• Field of Search: 361/679.01, 361/679.15, 361/679.21, 361/679.46, 361/679.54, 361/688, 361/689, 361/698, 361700-712, 361717-727, 361/732, 361/737, 361/752, 361/690, 165/80.3, 165/80.4, 165/80.5, 165/104.14, 165/104.21, 165/104.33, 165/185, 174/15.1, 174/15.2, 174/16.3, 174/252, 174/50, 174/520, 312/223.2, 312/223.3, 312/236, 455/550.1, 455/575.1, 455/347, 455/575.4
• US Class Current: 361/704
• CPC Class Codes: G06F 1/1624 with sliding enclosures, e.g. sliding keyboard or display
• CPC Class Codes: G06F 1/203 for portable computers, e.g. for laptops
• CPC Class Codes: H04M 1/0235 Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
• CPC Class Codes: H04M 1/0274 for an electrical connector module

Abstract

In one implementation, an electronic device includes a first body portion, a second body portion movably coupled to the first body portion, a heat source, and a thermal conductor in thermal communication with the heat source. The heat source is disposed within one of the first body portion or the second body portion. The thermal conductor has a first end portion, a second end portion, and a flexible portion between the first end portion and the second end portion. The first end portion of the thermal conductor is disposed within the first body portion. The second end portion of the thermal conductor is disposed within the second body portion.

Claims

1. An electronic device, comprising:

a first body portion;

a second body portion slidably coupled to the first body portion;

a heat source disposed within the first body portion; and

a thermal conductor in thermal communication with the heat source and having a first end portion, a second end portion, and a flexible portion between the first end portion and the second end portion,

the first end portion disposed within the first body portion,

the second end portion disposed within the second body portion,

the flexible portion extending from the first body portion to conduct heat into the second body portion.

2. The electronic device of claim 1, wherein the heat source includes at least one of a processor package or a radio frequency power amplifier package.

3. The electronic device of claim 1, wherein the thermal conductor is coupled to a housing of the heat source.

4. The electronic device of claim 1, wherein the thermal conductor includes a plurality of layers.

5. The electronic device of claim 1, wherein the thermal conductor includes a graphite film.

6. The electronic device of claim 1, wherein the thermal conductor defines a plurality of thermal paths.

7. The electronic device of claim 1, wherein the flexible portion defines a first bend and a second bend, the electronic device further comprising:

a first guide member disposed to prevent straightening of the first bend; and

a second guide member disposed to prevent straightening of the second bend.

16. The electronic device of claim 1, wherein the flexible portion extends between the first end portion and the second end portion and includes scores that improve flexing characteristics of the flexible portion.

17. The electronic device of claim 1, wherein the thermal conductor comprises a first layer, a second layer, and a third layer that is between the first and second layers, and a portion of the first layer is absent to expose a portion of the third layer in the first end portion or the second end portion proximal to the heat source.

8. An electronic device, comprising:

a first body portion;

a second body portion;

a heat source disposed within one of the first body portion or the second body portion; and

a thermal conductor in thermal communication with the heat source and comprising a first layer, a second layer, and a third layer that is between the first and second layers, the thermal conductor further having a first end portion, a second end portion, and a flexible portion between the first end portion and the second end portion, wherein

the first end portion is disposed within the first body portion,

the second end portion is disposed within the second body portion,

a portion of the first layer is absent to expose a portion of the third layer in the first end portion or the second end portion proximal to the heat source.

9. The electronic device of claim 8, wherein the heat source includes at least one of a processor package or a radio frequency power amplifier package.

10. The electronic device of claim 8, wherein the thermal conductor is coupled to a housing of the heat source.

11. The electronic device of claim 8, wherein the first layer and the second layer are different from the third layer.

12. The electronic device of claim 8, wherein the third layer comprises a graphite film.

13. The electronic device of claim 12, wherein the first and second layers comprise plastic.

14. The electronic device of claim 8, wherein the second body portion is rotatably coupled to the first body portion about the flexible portion of the thermal conductor.

15. The electronic device of claim 8, wherein the second body portion is slidably coupled to the first body portion.