PRESSURE REGULATION DEVICE

To provide a pressure regulation device which regulates the pressure in a waterproof case to the surrounding atmospheric pressure while preventing water from entering the waterproof case.SOLUTION: A pressure regulation device 100 attached to a waterproof case 10 so as to regulate pressure within the waterproof case comprise a base part 102 to be attached to the waterproof case, and an air conduit 106 joined to the base part so as to extend in a direction away from the waterproof case when the base part is attached to the waterproof case. The air conduit has first and second apertures, such that the first aperture is joined to the base part and communicates with the interior of the waterproof case and the second aperture communicates with the surrounding atmosphere. The air conduit has at least one bent part between the first and second apertures, and the second aperture is arranged between the bent part and the first end part in a height direction perpendicular to the base part.SELECTED DRAWING: Figure 2 【課題】防水ケース内への水の侵入を防止しながら、防水ケース内の圧力を周囲の大気圧に調整する圧力調整デバイスを提供する。【解決手段】防水ケース１０に取り付けられ防水ケース内の圧力を調整する圧力調整デバイス１００において、前記防水ケースに取り付けられるベース部１０２と、前記ベース部を前記防水ケースに取り付けたときに、前記防水ケースから離れる方向に延びるように前記ベース部に結合された空気管路１０６とを具備し、前記空気管路は、第１と第２の開口部を有し、第１の開口部が前記ベース部に結合され前記防水ケースの内部に連通し、第２の開口部において周囲の大気に連通するようになっており、前記空気管路は、前記第１と第２の開口部の間に少なくとも１つの屈曲部を有し、前記第２の開口部が、前記ベース部に垂直な高さ方向に前記屈曲部と前記第１の端部との間に配置されている圧力調整デバイスが提供される。【選択図】図２