| 摘要 |
PROBLEM TO BE SOLVED: To realize high luminance by obtaining a clear light flux by bending the weak emitted lights of a light emitting diode by an antenna cap in the antenna of a radio communication equipment such as a portable telephone. SOLUTION: An antenna cap 1 is cylindrically formed so that the top part can be closed like a dome, and mounted on the top end of the antenna of a radio receiver such as a portable telephone set. A built-in space 4 of a light emitting parallel resonance circuit 20 is formed inside. The built-in space 4 is constituted of a cylindrical space part 6, a polyhedron space part 7 successively set at the upper part of the cylindrical space part 6, and a polygonal conic space part 8 successively formed at the top end of the polyhedral space part 7 whose top part is closed flat. Thus, high luminance can be obtained.
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