Abstract: A lamp air exhausting apparatus is disclosed, which comprises a compression head, a holding assembly, and a securing member. The holding assembly comprises a holder, a flexible tube, a push rod, an eccentric cam and a spring. According to the present invention, a separate exhausting tube is not required, and an electrode can be accurately placed at the center of the lamp.

Abstract: A film speaker has a film diaphragm for transducing mechanical vibrations into sound waves and a plurality of piezo-electric elements for transducing electrical elements for transducing electrical signals into electrical vibrations. The piezo-electric elements are arranged in first and second grooves of a frame. The first and second edges of the film diaphragm are held between end covers and the frame such that the film diaphragm is coupled to the piezo-electric elements, one portion of V-shaped cross section being coupled to one row of piezo-electric elements and another portion of V-shaped cross section being coupled to the other row of piezo-electric elements.

Abstract: A stereo system produces stereo-phonic sound using a single piezo-electric film speaker. The arched film diaphragm of the speaker has one portion coupled to vibrate in response to a left stereo signal received by a first set of piezo-electric transducers and another portion coupled to vibrate in response to a right stereo signal received by a second set of piezo-electric transducers.