| 摘要 |
PROBLEM TO BE SOLVED: To eliminate drainage trouble of deposit rainwater due to leaves, dust, or the like in draining rainwater in an existing gutter and to avoid obsolescence of a skeleton and a skeleton fixture material caused by infiltration of rainwater into the skeleton due to the drainage trouble, thereby accelerating recovery of a rainwater circulation system and reducing an installation cost of a net for preventing accumulation of leaves and dust, and a gutter construction cost and a damage replacement work cost required for countermeasres against snow coverage. SOLUTION: This raindrop granulation water spray type open gutter system has a plurality of raindrop granulation water spray plates 16 of unequalsided obtuse-angled V-shape disposed parallel with a building, with the tip side put in a state of being lowered by a slight angle from the building side, and uses a raindrop granulation water spray plate holding hardware capable of coping with the pitch of a roof. COPYRIGHT: (C)2008,JPO&INPIT
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