Abstract: [Problem] To present a solar heat collecting device capable of enhancing the heat collecting efficiency by effectively utilizing the sunlight entering an area near the end part of the reflector at the opposite side of the direction of location of the sun. [Solving Means] In the solar heat collecting device for collecting the reflected light of sunlight Sb1, Sb2 entering a trough type reflector 1 having a parabolic section to a heat collecting pipe 2 erected at a position of focus of the reflector 1, and transmitting energy to a heat medium passing inside of the heat collecting pipe 2, the solar heat collecting device is installed so that central axis L1 of the reflector 1 may be directed along the north-south axis, and a plane reflector 3 is disposed orthogonally to central axis L1, at the end part of the reflector 1 at the opposite side of the direction of location of the sun.

Abstract: [Problem] To present a solar heat collecting device capable of enhancing the heat collecting efficiency by effectively utilizing the sunlight entering an area near the end part of the reflector at the opposite side of the direction of location of the sun. [Solving Means] In the solar heat collecting device for collecting the reflected light of sunlight Sb1, Sb2 entering a trough type reflector 1 having a parabolic section to a heat collecting pipe 2 erected at a position of focus of the reflector 1, and transmitting energy to a heat medium passing inside of the heat collecting pipe 2, the solar heat collecting device is installed so that central axis L1 of the reflector 1 may be directed along the north-south axis, and a plane reflector 3 is disposed orthogonally to central axis L1, at the end part of the reflector 1 at the opposite side of the direction of location of the sun.