| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sun shadow position measuring device capable of measuring a sun shadow position at an intended-measuring time on a certain day and month in which the sun shadow position of sunshine of an obstacle does not depend on sunshine or time on the certain day and month on a spot. <P>SOLUTION: When an upper end of the obstacle is reflected on a flat reflector and the reflector is looked from a peephole matched with a solar height angle, the position of the reflector corresponds to the sun shadow position of the obstacle. When the peep part 3 is matched with the solar height angle 11 and a mark 3b of the peep part and an uppermost part of the obstacle 8 reflected on the reflector 2 are agreed with a mark 2a of the reflector by peeping from the peep part 3 like a visual human object image 10, the position of the mark 2a of the reflector agrees with the sun shadow position of a solar beam 9 based on the principle that an incidence angle of the reflector coincides with the reflected angle. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
