PROBLEM TO BE SOLVED: To provide a simple waterer for underground, capable of dissolving excessive dryness and too much watering without using any electricity nor machine.SOLUTION: A waterer 1 for underground includes: an airtight tank 2 for forming an airtight water storage space a small tank 3 disposed on the bottom side of the airtight tank 2, provided with a water supply tube 4 on the bottom face thereof in a suspended manner extended toward outside the airtight tank 2 and a water supply mat 5 to which the outer end of the water supply tube 4 is connected, being buried underground, generating capillary phenomenon. In the small tank 3, a lower small hole 3a and an upper small hole 3b are opened on the bottom side and thereabove respectively, and an air tube 6 in communication with ambient air is connected to the small tank.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】電気も機械も使わずに乾き過ぎや水のやり過ぎを解消できる簡易な土中への給水器を提供する。【解決手段】土中への給水器1は、密閉状の貯水空間を形成する密閉タンク2と、密閉タンク2の底側に配設されて、密閉タンク2の外側へ延びる垂下状の給水チューブ4を底面に有する小タンク3と、給水チューブ4の外端が接続されて土中に埋設される、毛細管現象を生じる給水マット5とを備え、小タンク3には、底面側に下小孔3aと、その上方に上小孔3bが開口されているとともに、外気と連通する空気筒6が接続されている。【選択図】図1
