Heatsinks for an image capture device
An image capture device that includes a housing and a heatsink located partially or completely within the housing. The heatsink comprises a planar surface, a printed circuit board in communication with the heatsink, and a sheet conductor that is a graphite sheet connected to the planar surface of the heatsink and in direct contact with the printed circuit board or components of the printed circuit board.
1. An image capture device comprising:
a housing;
a heatsink located partially or completely within the housing, wherein the heatsink comprises:
a planar surface; and
a cutout adjacent to the planar surface that is configured to allow a portion of an integrated sensor and lens assembly (ISLA) to extend through the cutout and connect to the housing;
a printed circuit board in communication with the heatsink;
a sheet conductor that is a graphite sheet connected to the planar surface of the heatsink and in direct contact with the printed circuit board or components of the printed circuit board; and
a conductor that in communication with the printed circuit board and extends over the printed circuit board and the heatsink where the conductor connects to the heatsink.
2. The image capture device of claim 1 , wherein a power circuit, a microprocessor, or both are located on the printed circuit board and are in direct contact with the sheet conductor.
3. The image capture device of claim 1 , wherein the sheet conductor is connected to the heatsink by a connector.
4. The image capture device of claim 3 , wherein the connector is double sided tape.
5. The image capture device of claim 1 , wherein the sheet conductor has a higher thermal conductivity than the heatsink.
6. The image capture device of claim 5 , wherein the thermal conductivity of the sheet conductor is between 500 Wm −1 K −1 to 2000 Wm −1 K −1 .
7. The image capture device of claim 1 , wherein the heatsink is made of aluminum.
8. The image capture device of claim 1 , further comprising:
a bayonet forward of the heatsink and the sheet conductor that connects the ISLA to the housing.
9. An image capture device comprising:
a heatsink comprising:
a planar surface and a cut-out that are adjacent; and
a sheet conductor covering a portion of the planar surface of the heatsink, wherein the sheet conductor has a thickness that is less than the thickness of the heatsink and the sheet conductor is made of a material that has a higher thermal conductivity than the material of the heatsink;
an integrated sensor and lens assembly (ISLA) having a portion that extends through the cut-out a printed circuit board comprising a microprocessor, a power circuit, or both on a rear surface of the printed circuit board, wherein a forward surface of the printed circuit board is in communication with the planar surface through the sheet conductor and the rear surface of the printed circuit board faces away from the planar surface; and
a thermal interface material located between the sheet conductor and the planar surface of the heatsink.
10. The image capture device of claim 9 , wherein the sheet conductor is connected to the planar surface by a connector.
11. The image capture device of claim 10 , wherein the connector is double sided tape.
12. The image capture device of claim 9 , wherein the sheet conductor is made of a material comprising a thermal conductivity of 500 Wm −1 K −1 or more.
13. The image capture device of claim 9 , further comprising a conductor that extends from a rear side of the printed circuit board to a front side of the heatsink so that heat is distributed about the heatsink.
14. The image capture device of claim 9 , wherein the connector is double sided tape.
15. An image capture device comprising:
a housing;
a heatsink located partially or completely within the housing, wherein the heatsink comprises a planar surface and a cut-out adjacent to the planar surface;
an integrated sensor and lens assembly (ISLA) having a portion that extends through the cut-out;
a printed circuit board in communication with the heatsink;
a sheet conductor located between and in direct contact with the planar surface of the heatsink and the printed circuit board;
a connector connecting the sheet conductor to the heatsink;
a conductor that extends from a rear side of the printed circuit board to a front side of the heatsink so that heat is distributed about the heatsink; and
a thermal interface material between the sheet conductor and the rear side of the printed circuit board.
16. The image capture device of claim 15 , wherein the sheet conductor and the planar surface are equal in size.
17. The image capture device of claim 16 , wherein the connector covers an entire surface area of the sheet conductor, the planar surface, or both.
18. The image capture device of claim 15 , wherein the conductor and the sheet conductor are made of a same material.
19. The image capture device of claim 18 , wherein the conductor and the sheet conductor have a thermal conductivity of 500 Wm −1 K −1 to 2000 Wm −1 K −1 , and the thermal conductivity of the conductor and the sheet conductor is greater than a thermal conductivity of the heatsink.
20. The image capture device of claim 15 , wherein the thermal interface material has a thermal conductivity of 1 Wm −1 K −1 or more and 100 Wm −1 K −1 or less.