Patent ID: 7920069

Claim:
An audible and visual signal comprising: (a) a case constructed of a light transmissive material and having an exposed cover that is visible when the signal is mounted in an operable position to a mounting panel and also having a tubular wall extending transversely from the end cover for extending through a hole in the mounting panel and surrounding and containing signal operating components, the cover having at least one aperture for transmission of sound out of the case; (b) a piezoelectric transducer including a diaphragm that is mounted within the tubular wall of the case and spaced from the exposed cover a distance to form an audio enhancing cavity between the diaphragm and the cover; (c) a circuit board mounted within the tubular wall and spaced from the diaphragm on the opposite side of the diaphragm from the cover; and (d) a light source mounted to a surface of the circuit board facing the diaphragm.