Patent ID: 7965857

Claim:
A loudspeaker comprising a magnet unit that generates a magnetic field, and a membrane which is mounted in a frame and which is provided with an electrical conductor arranged in a pattern on the membrane, which membrane is positioned in the magnetic field in such a manner that a force is exerted when current is fed through the conductor pattern on the membrane, which force is capable of setting the membrane in motion so as to produce sound, wherein said conductor pattern is comprised of a multitude of substantially parallel electrically conducting lines extending substantially in an elongated rectangle and a multitude of electrically conducting lines connecting said parallel lines at the short sides of said rectangle, said parallel lines and connecting lines together defining said electrical conductor, the frame being provided with metallic members that cover all lines of said conductor pattern that are not parallel to a length of said membrane on at least one short side of said rectangle, wherein the metallic members are mounted in a metal housing, making contact with said housing over the larger part of their surface area, or are integral with said housing, such that in use heat produced in each one of said multitude of electrically conducting lines is dissipated to said metal housing via said connecting lines.