TEMPERATURE SENSOR

PROBLEM TO BE SOLVED: To prevent two conductors 30 from being short-circuited to each other with water or the like having entered a case 10. SOLUTION: A temperature sensor arranged with a temperature detecting substance 20 on the side of the bottom wall 12 inside the case 10. The sensor is provided with a protecting tube 40 which is connected at its end to the detecting substance 20 hermetically and has two through holes 41 into which the two conductors 30 are inserted respectively, and two covering tubes 50 which cover the parts drawn out from the protecting tube 40 of the two conductors 30. The covering tubes 50 are inserted up to the insides of the through holes 41 of the protecting tube 40. Consequently, the two conductors 30 become difficult to short-circuit to each other, even when water or the like enters the inside of the protecting tube 40, since the creeping distance between the two conductors 30 being in the protecting tube 40 becomes longer by the length of insertion of the covering tubes 50 into the through holes 41.