PROBLEM TO BE SOLVED: To provide a felled tree-confirming device which is lightweight, can easily be carried, can reduce labor needed to prepare the device, and can simplify confirmation work.SOLUTION: The felled tree-confirming device includes a balloon 10 in which a lighter gas than air is sealed to float up in the atmosphere, a smoke candle 30 which is assembled with the balloon to float together with the balloon, a tube 40 which is connected to a fluid-releasing device to tie the balloon to the ground, and a gas cylinder 50 which supplies a trigger fluid FA to the fluid-releasing device through a tube to release a visible mark fluid FB from the fluid-releasing device, wherein the fluid-releasing device has a container for receiving a gas flow visibilitization agent for producing the visible mark fluid, when released in the atmosphere, and the gas flow visibilitization agent is released in the atmosphere from a releasing port disposed in the container, when the trigger fluid is supplied to the container.COPYRIGHT: (C)2013,JPO&INPIT【課題】軽量且つ運搬容易であり、装置の準備にかかる労力を減らし、確認作業を簡略化することができる伐採木確認装置を提供する。【解決手段】空気より軽い気体を封入されて大気中に浮上するバルーン10と、バルーンに組み付けられてバルーンと共に浮上する発煙管30と、流体放出器と接続されてバルーンを地上につなぎ止めるチューブ40と、流体放出器に対してチューブを介してトリガ用流体FAを供給することにより流体放出器から目視可能な目印用流体FBを放出させるガスボンベ50と、を備え、流体放出器は、大気中に放出されたときに目視可能な目印用流体を生成する気流可視化剤を収容する容器を備え、トリガ用流体が容器に供給されたときに容器に設けた放出口から気流可視化剤を大気中に放出するように構成されている。【選択図】図1
