Smoke detector

The utility model relates to a smoke detector belongs to the optical sensor field, and this smoke detector includes shell, dustproof subassembly, shield cover, wiring board assembly, base and fixed bolster, be provided with on the fixed bolster can with the base on correspond the jack complex inserted bar of setting, the inserted bar includes the pole portion of two semi -cylindrical structures, two pole portion tops are provided with can block to consolidate and are in plush copper in the jack, dustproof subassembly include shield, dust screen and dustproof base, and the dust screen cup joints at the shield peripherally, and the dust screen is the loop configuration, is provided with a plurality of through -holes in the loop configuration, is provided with the baffle that a plurality of circular intervals set up on the shield, and the baffle is S type structure. The utility model has the characteristics of easy dismounting, excellent in use effect. 本实用新型涉及种感烟探测器，属于光学传感器领域，该感烟探测器包括外壳、防尘组件、屏蔽罩、线路板组件、底座和固定支架，固定