Patent ID: 6942021

Claim:
A heat transport device comprising: an evaporator which has a structure for generating a capillary force to circulate working fluid, and in which liquid-phase working fluid evaporates; a condenser in which vapor-phase working fluid condenses; a plurality of liquid channels which connect the evaporator and the condenser, and through which the liquid-phase working fluid flows; and at least one vapor channel through which the vapor-phase working fluid flows, wherein the plurality of liquid channels, the vapor channel, the evaporator, and the condenser are provided in the same substrate, an insulating section is provided along the liquid channels and the vapor channel to suppress heat transmission between the liquid and vapor channels and the outside, or between the liquid channels and the vapor channel, and the insulating section is a cavity defined by a through hole provided in the second substrate, and the first and third substrates that close the through hole.