H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 9/06 (2006.01)
Patent
CA 2297272
The invention concerns a loudspeaker having an elongate parallelepiped hollow body (1), whereof one longitudinal surface is made up of a stretched elongate rectangular planar diaphragm (7). The diaphragm (7) is suspended by its edges (10) to the body (1) adjacent side surfaces (2), and is integral with an elongate rigid inner part (11) extending in the body (1) longitudinal direction, and bearing a mobile electromagnetic coil (13), parallel to the diaphragm. The coil (13) is arranged between two fixed magnets (5) located along the body (1) two longitudinal side surfaces (2) which form, with the base (3) of said body, polar parts. Said loudspeaker is useful as component of an active anti-noise system, associated with a double glazing.
Le haut parleur se présente comme un corps creux parallélépipédique (1) de forme allongée, dont une face longitudinale est constituée par une membrane plane (7) tendue de forme rectangulaire allongée. La membrane (7) est suspendue par ses bords (10) aux faces latérales adjacentes (2) du corps (1), et est solidaire d'une partie rigide interne allongée (11) qui s'étend dans la direction longitudinale du corps (1), et qui porte une bobine électromagnétique mobile (13), parallèle à la membrane. La bobine (13) est disposée entre deux aimants fixes (5) placés le long des deux faces latérales longitudinales (2) du corps (1) qui forment, avec le fond (3) de ce corps, des parties polaires. Ce haut-parleur est utilisable comme composant d'un système anti-bruit actif, associé à un double vitrage.
Carme Christian
Rehfeld Marc
Robic
Saint-Gobain Vitrage
Technofirst
LandOfFree
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