Patent application number | Description | Published |
20110007922 | SPEAKER DIAPHRAGM, SPEAKER, AND ELECTRONIC EQUIPMENT AND MOBILE DEVICE USING THE SPEAKER - A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality. | 01-13-2011 |
20120027243 | PRESSURE ADJUSTOR AND METHOD OF MANUFACTURING THE SAME, SPEAKER DEVICE USING THE PRESSURE ADJUSTOR, ELECTRONIC DEVICE, AND VEHICLE - A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small. | 02-02-2012 |
20120250930 | SPEAKER DIAPHRAGM AND SPEAKER USING SAME, AND ELECTRONIC EQUIPMENT AND DEVICE USING SAID SPEAKER, AND SPEAKER DIAPHRAGM MANUFACTURING METHOD - A diaphragm is formed of paper manufactured from a first fiber material and a second fiber material. The first fiber material is beaten to have a given freeness, and the second fiber material is made by carbonizing bamboo fiber that has been fibrillated into a microfibril state. This structure allows the second fiber material to increase a rigidity of the diaphragm and also increase an internal loss, so that sound quality of the speaker that employs this diaphragm can be improved. | 10-04-2012 |
20120257781 | SPEAKER DIAPHRAGM, SPEAKER DUST CAP, SPEAKER FRAME, SPEAKER USING SAID PARTS, AND ELECTRONIC EQUIPMENT AND DEVICE USING SAID SPEAKER - Each of a speaker diaphragm, a dust cap, and a frame includes a resin and a plant opal that is extracted from a bamboo leaf, and is formed by injection molding or sheet molding. The configuration can enhance stiffness of each of the diaphragm, the dust cap, and the frame and implement high performance. | 10-11-2012 |
20130039515 | SPEAKER COMPONENT, SPEAKER USING SAME, ELECTRONIC APPARATUS, AND MOVING MEANS - Provided is a speaker diaphragm or a speaker voice coil bobbin manufactured by a papermaking method and including metal hydroxide by at least an amount of 30 wt % or greater. With this, it is possible to improve rigidity and achieve favorable acoustic quality by an effect of mixing metal hydroxide. Moreover, it is possible to provide a paper-made diaphragm or a voice coil bobbin with flame retardancy without increasing weight or cost. | 02-14-2013 |
20130216088 | ACOUSTIC MOLDED ARTICLE, SPEAKER USING SAME, AND ELECTRONIC EQUIPMENT AND MOBILE APPARATUS USING SPEAKER - An acoustic molded article, such as a frame for a speaker, used for an acoustic instrument, includes a regenerated glass and a regenerated resin both collected from household electric appliances which have been incinerated as fuel, or used for reclamation to be discarded. Thus, this article is an environment-friendly acoustic molded article which is light, high in rigidity and internal loss, and also capable of decreasing the discharge of carbon dioxide. | 08-22-2013 |
20130301867 | LOUDSPEAKER RESIN MOLDING COMPONENT AND LOUDSPEAKER USING THE SAME AND ELECTRONIC DEVICE AND MOBILE APPARATUS USING THE LOUDSPEAKER - A loudspeaker resin molding component includes resin and bamboo fibers refined to have a microfibril status and carbonized. By this configuration, such a loudspeaker resin molding component can achieve both of a high elastic modulus and a large internal loss. | 11-14-2013 |
20150319532 | DIAPHRAGM, LOUDSPEAKER USING DIAPHRAGM, ELECTRONIC DEVICE AND MOBILE DEVICE USING LOUDSPEAKER, AND METHOD FOR PRODUCING DIAPHRAGM - A diaphragm includes a paper layer and a skin layer. The paper layer includes natural fibers and synthetic fibers formed of thermoplastic resin. The paper layer is formed by mixing the natural fibers and the synthetic fibers in water, and thinly spreading a resultant mixture on a mesh. The skin layer is formed on one surface of the paper layer. Note here that the skin layer is formed of the same resin as that of the synthetic fibers. | 11-05-2015 |