CPC G08B 17/107 (2013.01) | 5 Claims |
1. A smoke detector, comprising:
a light source;
a light sensor, configured to receive reflected light of emission light of the light source to generate a detection signal;
a bottom surface, comprising multiple protrusions extending out from the bottom surface, wherein the multiple protrusions are configured to block reflected light from the bottom surface,
a side wall, extending out from an edge of the bottom surface, and having apertures; and
a reflective surface, arranged at an inner surface of the side wall,
wherein the light source and the light sensor are arranged at the inner surface of the side wall and opposite to the reflective surface.
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