| 摘要 |
A tubular structure for fixing particulate matter detection device 100 includes a tubular first holding tube 1 having a fixing structure portion 4 at a first end 2; and a tubular second holding tube 11 having one end 12 fixed to a second end 3 so that the second holding tube is coaxial with the first holding tube 1. A particulate matter detection device 21, prolonged in one direction and having a detecting portion 22 of a particulate matter and a takeout portion 23 of a wiring line is disposed in the tubular structure so that the detecting portion 22 projects to the outside from the first end 2 and so that the takeout portion 23 is positioned in the second holding tube, and the particulate matter detection device is fixed to a pipe by the fixing structure portion 4 so that the detecting portion 22 positioned in the pipe.
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