Assignee: Tohoku Pioneer Corporation

Location: Yamagata, JP
No. of patents: 146

Number	Title	Issue Date
8165335	Speaker and speaker unit The present invention is to provide a speaker having desirable sound characteristics with a smaller size, and a speaker unit having the speaker. The speaker unit has the speaker and an attachment unit. The speaker has a case, a magnetic circuit, a diaphragm, and a p...	04/24/2012
8151287	Optical pickup feed device for sliding optical pickup The present invention is to provide a pickup feed device to accurately position an optical pickup in place with miniaturization. The pickup device includes a lead screw attached to a movable chassis, a pickup portion, a rack member, a torsion coil spring, a projecti...	04/03/2012
8139813	Speaker device A flat speaker device capable of emitting loud reproduced sound with a relatively simple configuration is provided. The speaker device includes a diaphragm, a frame supporting the diaphragm vibratably in the vibration direction, a magnetic circuit disposed in the fr...	03/20/2012
8139811	Speaker A speaker 1 includes: a frame 4; a magnetic circuit 2; and a vibrating unit 3. The magnetic circuit 2 is attached to the frame 4. The vibrating unit 3 is received in the frame 4, and includes a drive cone 14...	03/20/2012
8131004	Speaker apparatus According to an aspect of the invention, there is provided a speaker apparatus including: a speaker frame; and a connection terminal for electrically connecting to an outside of a speaker, an axis line of the connection terminal being arranged along a tangential lin...	03/06/2012
8111869	Speaker device A speaker device includes a damper allowing high linearity. The speaker device includes a vibration body including a damper and a voice coil bobbin (bobbin), and a magnetic circuit having a plate. The damper has a first member arranged opposite the plate, and a seco...	02/07/2012
8111868	Speaker device A drive cone 11 and a diaphragm 14 are integrally driven by a voice coil 6 movably disposed in a magnetic gap 5. Peripheral edge portions of the drive cone 11 and the diaphragm 14 are supported by a frame 12 via diffe...	02/07/2012
8103044	Speaker device A voice coil 6 is movably disposed in a magnetic gap 5. A drive cone (first diaphragm) 11 and a diaphragm (second diaphragm) 14 are integrally driven by the voice coil 6. Peripheral edge portion of the drive cone 11 and the ...	01/24/2012
8073184	Speaker device In a speaker device, cutting wiring electrically connected to a conductive wire of an electronic component and a voice coil, and the conductive wire and the wiring are electrically connected without a speaker terminal lug. The speaker device includes wiring electric...	12/06/2011
8059857	Voice coil bobbin and speaker system A voice coil bobbin, which transmits a motive force from the voice coil wound around the bobbin to a diaphragm, includes a main part, a reinforcement part formed on the surface side of the main part, and a middle part formed between the main part and the reinforceme...	11/15/2011
8045746	Speaker device It is an object of the present invention to use a simplified structure to improve a strength of a neck portion of a conical diaphragm in the vicinity of a voice coil fixing section, thereby inhibiting an undesired dividing vibration in a speaker device. The speaker ...	10/25/2011
8041071	Diaphragm and speaker device A diaphragm and a speaker unit which can prevent generation of abnormal sound by suppressing rolling phenomenon. The speaker unit has a diaphragm. The diaphragm includes a portion for supporting a voice coil, and a sound emitting portion formed continuously to one e...	10/18/2011
8029684	Self-emission panel and method of manufacturing the same A self-emission panel and a method of manufacturing a self-emission panel which can prevent emission failures from occurring due to various factors, thereby achieving a self-emission panel that is free from emission failures. The self-emission panel is manufactured ...	10/04/2011
8023687	Loudspeaker A loudspeaker includes a diaphragm and an edge having an inner periphery end portion thereof connected with an outer periphery of the diaphragm, in which an outer end portion of the edge is attached to a speaker frame. The diaphragm has a bent portion in the vicinit...	09/20/2011
8023680	Mounting bracket and speaker unit The speaker unit 1 includes a speaker 2 and a mounting bracket 3. The mounting bracket 3 includes an attachment 16, a connecting part 17, and an elastic part 18. The attachment 16 is attached to the speaker ...	09/20/2011
8009855	Speaker A degree of freedom in designing a circuit board to which a speaker is attached is enhanced. The speaker including: a frame with a yoke of a magnetic circuit portion embedded inside a central through hole; a diaphragm having a voice coil inserted in a magnetic circu...	08/30/2011
8004612	Apparatus and method for controlling display brightness in an image display device An inputted picture signal is stored in an image memory into which a picture signal for at least one frame period can be written, while rewriting the memory. At a plurality of timings within one frame period, an average brightness calculation unit calculates an aver...	08/23/2011
7948160	Optical device and manufacturing method of the optical device An optical device emitting light of a predetermined mixed color other than the intrinsic colors of light emitting layers from each pixel having a reduced number of drive lines (electrodes) to achieve the color. The optical device includes one or a plurality of self ...	05/24/2011
7936896	Speaker apparatus According to an aspect of the invention, there is provided a speaker apparatus including: a magnetic circuit; a vibrating plate vibrated by the magnetic circuit; a speaker frame holding the magnetic circuit and the vibrating plate, and a connecting portion connectin...	05/03/2011
7912242	Speaker apparatus and terminal member A frame has a slide hole and a receiving hole made close to an end of the slide hole. A terminal member has a protrusion protruding from a face making contact with the speaker frame, and a claw projecting in a direction approximately perpendicular to a protruding di...	03/22/2011
7903837	Magnetic circuit for speaker device and speaker device A magnetic circuit for a speaker device includes a yoke having a pole piece main body formed into a cylindrical shape or a hollow cylindrical column shape, and a flange part provided on an outer side thereof, a magnet arranged on the flange part, a plate arranged on...	03/08/2011
7881490	Speaker device A speaker device includes a magnetic circuit, a vibration system, a frame and a terminal. The frame is formed into a frame shape, and an inner wall thereof holds the magnetic circuit. Particularly, the frame has an opening for ventilation, which makes a rear surface...	02/01/2011
7848538	Speaker voice coil and speaker unit using the same A thread winding part or a reinforcing wire winding part is formed by winding a heat resistant fiber thread or a reinforcing wire around the voice coil bobbin in contact with both coil ends of the wire winding part or a coil end of the same on a magnetic-circuit sid...	12/07/2010
7847766	Self-emission display apparatus and method of driving the same It is an object of the present invention to inhibit a collapse of a color balance possibly caused due to deterioration of self-emission elements when performing a color displaying by virtue of several different colors. A self-emission display apparatus comprises: a ...	12/07/2010
7849958	Vibration system part for speaker device and manufacturing method thereof A Vibration system part for a speaker device includes a woven fabric or a non-woven fabric made of basalt fiber produced by twist yarn or roving yarn being a continuous long-fiber. The vibration system part for the speaker device may be a diaphragm, a center cap, an...	12/14/2010
7822221	Speaker device A speaker device includes a terminal member, a voice coil bobbin, and a connecting member mounted on the voice coil bobbin. The connecting member has a terminal mounting part. A pair of claw part and hook-shaped projecting part is provided on an upper end portion of...	10/26/2010
7756287	Speaker vibrating parts A speaker vibrating part has a diaphragm body 10A and an approximately cylinder-shaped coupling portion 10B for coupling the diaphragm body 10A to a voice coil bobbin. Protruded strips 10Ba extend out from the inner periphery of the coupl...	07/13/2010
7747034	Speaker device A speaker device includes a voice coil bobbin around which a voice coil is wound, and a connecting member mounted on an outer peripheral wall of the voice coil bobbin. Plural ventilation holes are provided on a side wall of the voice coil bobbin with constant spaces...	06/29/2010
7687001	Method of manufacturing speaker edge member It is an object of the present invention to improve a speaker edge member manufacturing method in which a substrate is introduced into an edge member molding material by virtue of insertion molding, to prevent a trouble such as a crack on a parting line or the like,...	03/30/2010
7685695	Method of producing a speaker A method of producing a speaker which is manufactured by bonding a plurality of speaker components, including steps of humidifying a joint portion which bonds at least two speaker components among the plurality of speaker components; and bonding the speaker componen...	03/30/2010
7675229	Self-emission panel and method of fabricating the same The objects of the present invention are to provide a self-emission panel capable of achieving low electrical resistance of upper electrodes by a simple configuration, and to provide a method of fabricating a self-emission panel capable of achieving low electrical r...	03/09/2010
7672473	Loudspeaker In a loudspeaker, a lead wire of a voice coil is fastened to a diaphragm, and is extended along the diaphragm. A bottom surface of a frame supporting the diaphragm is placed so as to face against a rear surface of the diaphragm. A protrusion is formed on the bottom ...	03/02/2010
7671533	Self-emission unit with integrally formed module and protecting frame It is an object of the present invention to provide an improved method of manufacturing a self-emission unit including a self-emission module having self-emission elements formed on a substrate, and a frame for protecting the self-emission modules, without carrying ...	03/02/2010
7624661	Supporting unit, and moving table device and linear-motion guiding device that use the supporting unit A supporting unit in a moving table device, easily connected to a base and a table, is provided. A supporting unit (Uα) has a pair of planar bearing plates. Inside the planar bearing plates are positioned spherical bearing plates, respectively. Further, a spherical...	12/01/2009
7539318	Speaker unit, method for fabricating the same, and speaker apparatus A speaker apparatus is configured such that a speaker unit including a single magnetic circuit system, a plurality of vibration systems and a case is housed inside a speaker box. In the speaker unit, magnetic gaps having a magnetic field of the same magnitude are de...	05/26/2009
7535164	Self-emission panel and method of manufacturing same A self-emission panel and a method of manufacturing a self-emission panel which can prevent emission failures from occurring due to various factors, thereby achieving a self-emission panel that is free from emission failures. The self-emission panel is manufactured ...	05/19/2009
7515729	Speaker device A speaker device includes a terminal member, a connecting member and a voice coil. The connecting member has a terminal mounting part, a flat surface and a recessed portion. The terminal member is mounted to the terminal mounting part. On the flat surface, an inner ...	04/07/2009
7515728	Speaker apparatus A speaker apparatus including: a first diaphragm; a second diaphragm arranged coaxial with the first diaphragm along a driving direction; a frame having diaphragm supporting portions; and a voice-coil bobbin, wherein outer circumferential portions of the first diaph...	04/07/2009
7471288	Light emitting display device and driving control method therefor A clock signal in synchronization with a data writing signal, every scanning line, which is supplied from a light-emitting control circuit 4 to a scanning driver 6, is supplied to an oscillator 12 which generates a reference switching signal, ac...	12/30/2008
7460682	Voice coil, speaker apparatus using the voice coil, and method for manufacturing the speaker apparatus There is provided a speaker apparatus manufactured by using a voice coil configured so that a lead wire electrically connected to a coil is clamped between an insulating sheet and a bobbin. ...	12/02/2008

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Assignee: Tohoku Pioneer Corporation