| 摘要 |
<P>PROBLEM TO BE SOLVED: To raise emission luminance by expanding the emission area of the emission face in a direction of a crossing pedestrian without increasing emission electric power. <P>SOLUTION: The polyhedron emission body 1, which has the trunk part emission body 3, the trunk part extension emission body 4 and the combination with the lower emission body 5, is installed in a globe. The trunk part emission body 3 forms three emission faces 3a of the triangular prism, and the trunk part extension emission body 4 forms emission faces 4a, 4a on both sides of each of emission faces 3a of the trunk part emission body 3 and interposes the emission faces 3a of the trunk part emission body 3 and is arranged with an angle to both sides of the emission faces 3a of the trunk part emission body, which has a circular arc curve in the form of the globe on the outer end edge. The lower emission body 5 forms the diagonally downward emission face 5a in the lower part of each of emission faces 3a of the trunk part emission body 3. In the globe, three circular emission areas which is isolated by two emission faces 4a, 4a of the trunk part extension emission body 4 are formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
