Vapor chamber with condensate flow paths disposed on wall parts

A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in the enclosed space, the enclosed space comprising:

• a plurality of condensate flow paths through which the working fluid in a condensing state flows, the condensate flow paths extending in parallel to each other;
• and
• a plurality of vapor flow paths through which the working fluid in a vaporizing state flows, the vapor flow paths extending in parallel to each other, wherein
• at least one of the condensate flow paths is between adjacent ones of the vapor flow paths in a plan view,
• wall parts that separate the vapor flow paths and the condensate flow paths each comprise a plurality of communicating opening parts that are openings via which the vapor flow paths and the condensate flow paths communicate, wherein the wall parts adjoin one of upper and lower inner faces of the vapor chamber, and the condensate flow paths are also on the one inner face, and
• pitches for the communicating opening parts vary in an extending direction of the vapor flow paths and the condensate flow paths.