This creation include at least have one with hollow volume area closed area basin body,One hollow volume area be connected to basin body outer circumference air flow path,And one group of drainage body set in what recess holding area is formed,Wherein,Basin body by one with recess holding area endosexine,The extexine of one support endosexine,Between one sandwiched what endosexine and extexine in hollow form space region,One as between recess holding area and hollow volume area connection permeable hole,One from accommodating regional connectivity to basin body outer circumference discharge opening,One is formed from the blowhole that hollow form space region is connected to basin body outer circumference； Also,Air flow path means that hollow perforative conductor one end can cooperate with the setting of blowhole,And the other end end of conductor can be made to be in unclosed open state,Blowhole is enabled to keep unimpeded without hindrance state with outside air with the effect by conductor； In addition,Several small pores being connected to each other are formed on drainage body,It can be flowed to via small pore to the other side with sharp liquid.本創作至少包括有一具有中空狀空間區之密閉區域的盆體、一中空狀空間區連通至盆體周圍外側的氣流路徑、以及一組設於凹陷狀容置區域內的引流體所組成，其中，盆體係由一具有凹陷狀容置區域的內表層、一支撐內表層用的外表層、一夾置位於內表層與外表層之間呈中空狀的空間區、一作為凹陷狀容置區域與中空狀空間區之間的連通用透水孔、一從容置區域連通至盆體周圍外側的洩水口、一從中空狀空間區連通至盆體周圍外側的入氣孔所組成；又，氣流路徑係指中空貫穿的導體一端能與入氣孔的設置配合，且能使導體的另一端末端處呈未封閉的開放狀態，以藉由導體的作用而使得入氣孔能與外界空氣保持暢通無阻狀態；另，引流體上形成有若干彼此相互連通的小細孔，以利液體能經由小細孔而流向至另一側。
