A loop type heat pipe comprising: an evaporator that vaporizes working fluids (C); a first condenser and a second condenser that liquefy the working fluids (C) respectively; a first liquid pipe that includes a first flow channel and connects the evaporator and the first condenser to each other; a second liquid pipe that includes a second flow channel and connects the evaporator and the second condenser to each other; a first vapor pipe that connects the evaporator and the first condenser to each other; and a second vapor pipe that connects the evaporator and the second condenser to each other, characterised in that the evaporator comprises: a third flow channel that is connected to the first liquid pipe and the first vapor pipe ; a fourth flow channel that is connected to the second liquid pipe and the second vapor pipe ; and a partition wall that partitions the third flow channel and the fourth flow channel from each other, wherein: the first flow channel is partitioned from the second flow channel and the fourth flow channel and communicates with the third flow channel ; and the second flow channel is partitioned from the first flow channel and the third flow channel and communicates with the fourth flow channel . an evaporator that vaporizes working fluids (C); a first condenser and a second condenser that liquefy the working fluids (C) respectively; a first liquid pipe that includes a first flow channel and connects the evaporator and the first condenser to each other; a second liquid pipe that includes a second flow channel and connects the evaporator and the second condenser to each other; a first vapor pipe that connects the evaporator and the first condenser to each other; and a second vapor pipe that connects the evaporator and the second condenser to each other, characterised in that the evaporator comprises: a third flow channel that is connected to the first liquid pipe and the first vapor pipe ; a fourth flow channel that is connected to the second liquid pipe and the second vapor pipe ; and a partition wall that partitions the third flow channel and the fourth flow channel from each other, wherein: the first flow channel is partitioned from the second flow channel and the fourth flow channel and communicates with the third flow channel ; and the second flow channel is partitioned from the first flow channel and the third flow channel and communicates with the fourth flow channel . a third flow channel that is connected to the first liquid pipe and the first vapor pipe ; a fourth flow channel that is connected to the second liquid pipe and the second vapor pipe ; and a partition wall that partitions the third flow channel and the fourth flow channel from each other, wherein: the first flow channel is partitioned from the second flow channel and the fourth flow channel and communicates with the third flow channel ; and the second flow channel is partitioned from the first flow channel and the third flow channel and communicates with the fourth flow channel . the first flow channel is partitioned from the second flow channel and the fourth flow channel and communicates with the third flow channel ; and the second flow channel is partitioned from the first flow channel and the third flow channel and communicates with the fourth flow channel . <EOS>