Vapor chamber
A vapor chamber that includes a housing, a wick structure joined to a major inside surface of the housing, and a working liquid enclosed inside the housing. The wick structure is joined to the housing at a joint portion within a joint region, and a proportion of a total area of the joint portion within the joint region to an area of the joint region is 50% or less.
1. A vapor chamber comprising:
a housing;
a wick structure joined to a major inside surface of the housing, wherein the wick structure is joined to the inside surface of the housing at a plurality of joint portions within a joint region, and a proportion of a total area of the plurality of joint portions within the joint region to an area of the joint region is 50% or less; and
a working liquid enclosed inside the housing.
2. The vapor chamber according to claim 1 , wherein a proportion of the total area of the joint region to an area of a major surface of the wick structure is 30% or less.
3. The vapor chamber according to claim 1 , wherein the wick structure includes a core material made of a resin and a skin material made of a metal.
4. The vapor chamber according to claim 1 , wherein the wick structure has a reticular structure.
5. The vapor chamber according to claim 1 , wherein the wick structure has a copper-plating layer.
6. The vapor chamber according to claim 1 , wherein the joint region is disposed at an edge portion of the wick structure.
7. The vapor chamber according to claim 1 , wherein the joint region has a circular shape and is disposed at an edge portion of the wick structure.
8. The vapor chamber according to claim 1 , wherein the plurality of joint portions between the wick structure and a major inside surface of the housing is a resistance welded plurality of joint portions.
9. A heat radiation device comprising the vapor chamber according to claim 1 .
10. An electronic device comprising the vapor chamber according to claim 1 .
11. A method of manufacturing a vapor chamber, the method comprising:
disposing a wick structure on a major inside surface of a housing; and
fixing the wick structure to the major inside surface of the housing by resistance welding,
wherein the wick structure is fixed to the inside surface of the housing at a plurality of joint portions within a joint region, and a proportion of a total area of the plurality of joint portions within the joint region to an area of the joint region is 50% or less.
12. The method of manufacturing a vapor chamber according to claim 11 , further comprising enclosing a working liquid inside the housing.
13. The method of manufacturing a vapor chamber according to claim 11 , wherein a proportion of the total area of the joint region to an area of a major surface of the wick structure is 30% or less.
14. The method of manufacturing a vapor chamber according to claim 11 , wherein the wick structure includes a core material made of a resin and a skin material made of a metal.
15. The method of manufacturing a vapor chamber according to claim 11 , wherein the wick structure has a reticular structure.
16. The method of manufacturing a vapor chamber according to claim 11 , wherein the wick structure has a copper-plating layer.
17. The method of manufacturing a vapor chamber according to claim 11 , wherein the joint region is disposed at an edge portion of the wick structure.
18. The method of manufacturing a vapor chamber according to claim 11 , wherein the joint region has a circular shape and is disposed at an edge portion of the wick structure.