Smoke detector circuit, the smoke detector including a smoke sensing circuit this, and alerting device comprising both of the detector circuit and this

摘要

Smoke detector based on light scattering: accessible scattering region to the smoke; printed circuit which forms a supporting member and a (110), smoke detector electronic unit is mounted on the printed circuit (110); light emitter disposed above the printed circuit (110) on (115); has a sensitivity to at least a portion of the wavelength of the light beam emitter emits, is mounted on the printed circuit on the optical receiver (120) ; so as to face the emitter, aligned in the detection area of ​​the scattering region the light emitter is emitted, the light reflector of the first; and is facing the receiver, when smoke is present in the scattering region, and the scattering region and a is oriented in the receiver the scattered light coming from the light reflector, the second, The optical reflector of the first and second is installed on the support member in common. The optical reflector first and second and mechanical parts of a single includes (175) link that is resistant to the path of light to the second reflector from the light reflector of the first . [Selection Figure Figure 3