Patent ID: 8649181

Claim:
A tire condition detecting device comprising: an electronic component including a detector configured to detect a tire condition; and a casing configured to house the electronic component, the casing including: a box unit configured to house the electronic component, and the box unit having an opening surface formed thereon, and a lid unit configured to cover the opening surface, wherein an inside of the box unit having the opening surface covered by the lid unit is filled with a sealant, the lid unit has (i) a middle lid configured to cover the opening surface and come into contact with the sealant, and (ii) at least one outer lid located at an outer side of the box unit and farther away therefrom than the middle lid, the detector has an introduction pipe configured to communicatively connect the detector to an outside of the casing, the middle lid has a pipe insertion hole formed therein into which the introduction pipe is inserted, a tip end portion of the introduction pipe is located in the at least one outer lid, and each of the at least one outer lid has one or a plurality of vents formed therein.