| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a down-pipe with antenna in which the antenna performance is hardly adversely affected by the rainwater flowing therethrough. <P>SOLUTION: A down-pipe with antenna includes a cylindrical gutter body 3 having a slot antenna 2 with a slot 21 positioned in a part of a side wall 32 thereof in a circumferential direction, and a guide cylinder 33 that is provided in the gutter body 3 for causing rainwater to flow from areas from a position deviated to the opposite side of a side where a power supply part 23 of the slot antenna 2 is positioned in a plan view at a height where the power supply part 23 is positioned, to a position deviated to a side where the power supply part 23 is positioned in a plan view below the slot antenna. <P>COPYRIGHT: (C)2013,JPO&INPIT |
