| 摘要 |
In a scattered-light type smoke detector which is provided with peripheral smoke inlets 2 for introducing smoke into an internal dark chamber, a light emitter 6 which radiates light into the dark chamber and a light receiver 7 which receives light radiated from the light emitter and scattered by smoke in the chamber are disposed in such a manner that the optic axes thereof intersect at an angle theta of substantially 145 DEG C. <IMAGE> |
