PROBLEM TO BE SOLVED: To provide a gantry with a sun tracking function that follows a sun direction and altitude without using a rotational drive system. A platform 3 with a solar tracking function supports three points with support devices 11 to 13 with a light shielding plate 41 arranged on the south side and the east and west with respect to the base 2 so that the support height is variable. The support height of the first support device 11 disposed on the south side is maintained below the support height of the second and third support devices 12 and 13 disposed on the east and west, and the light shielding plate 41 is connected to the second support device 12 and the third support device 13. The irradiation of sunlight to the support device 13 is blocked, and in the morning, the support height of the second support device 12 is gradually increased toward the support height of the third support device 13, and in the afternoon, the support of the third support device 13 is supported. The height is lowered so as to be gradually lower than the support height of the second support device. [Selection] Figure 1【課題】 回転駆動系を用いることなく太陽の向きと高度に合わせて追従する太陽追尾機能付き架台を提供する。【解決手段】 太陽追尾機能付き架台３は、基台２に対して遮光板４１を南側及び東西に配置した支持装置１１～１３で支持高さ可変に３点支持し、日の出から日の入りの間において南側に配置した第１支持装置１１の支持高さを東西に配置した第２、第３支持装置１２、１３の支持高さ以下に維持し、遮光板４１は、第２支持装置１２と第３支持装置１３に対する太陽光の照射を遮って、午前では第２支持装置１２の支持高さを第３支持装置１３の支持高さに向けて徐々に上昇させ、午後では第３支持装置１３の支持高さを第２支持装置の支持高さよりも徐々に低くなるように降下させる。【選択図】 図１
