Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid speaker which obtains powerful high pitch sounds and mid and low pitch sounds.SOLUTION: A hybrid speaker includes: first magnets which are arranged at a predetermined interval so that S poles and N poles face the same side; second magnets 2, each of which has volume smaller than that of the first magnet 1, one of or the multiple second magnets 2 which are arranged between the first magnets 1 contacting with the first magnets 1 so that their magnetic poles become opposite to those of the first magnets 1; a yoke 4 housing the first magnets 1 and the second magnets 2; voice coils 3, each of which is disposed so as to intersect a magnetic circuit between the first magnet 1 and the yoke 4; a diaphragm 6 where the voice coils 3 are fixed on one surface; a frame 5 where the diaphragm 6 is fixed at a peripheral part of the surface of the diaphragm 6 to which the voice coils 3 are fixed; and plate springs 7 which elastically support the yoke 4 to the frame 5 on a surface of the frame 5 which is opposite to the side where the diaphragm 6 is fixed.
Abstract:
PROBLEM TO BE SOLVED: To provide an on-vehicle sound device having a speaker grille, which has a design surface provided on a front surface of a plane wave speaker unit with voice coils for left and right channels via a front space of predetermined volume, in which sounds of the left and right channels are not mixed in the front space by separating the front space into left and right. SOLUTION: A sound separation plate (rib) 45 is provided at the boundary part between left and right channels in a front space 35, a plane wave speaker unit 30 is fixed, facing passengers in a rear-seat, to a back face of a front-seat, a speaker grille 40 is arranged along an external surface of the back face of the front-seat, and the rib 45 is protruded from the speaker grille 40 towards an inside of the front space 35. Stereo feeling can be maintained since sounds of the left and right channels are separated in the front space 35 by the rib 45 and are not mixed to each other. COPYRIGHT: (C)2012,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a rucksack which is equipped with a speaker system to create clear sound naturally and clearly audible from electric audio equipment and audible together with environmental noise for a rucksack shouldering person around both ears without using headphones or earphones. SOLUTION: A speaker unit 4 to radiate a plane wave toward both ears or the vicinity of both ears of a rucksack shouldering person is placed on the shouldering belt 4 of this rucksack 1. The speaker unit 4 is connected to music playback equipment, etc., housed in a housing part of the rucksack 1. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a composite speaker which can obtain a voice output larger than a prior art plate or planar speaker when voice signals having the same intensity are input. SOLUTION: The composite speaker includes a single magnet or a plurality of magnets arranged to be spaced at a predetermined interval from each other, a yoke forming a magnetic circuit having a magnetic gap between the magnets, voice coils each arranged in each gap between the magnets and the yoke to be intersected with the magnetic circuit, a diaphragm with one surface fixed to the voice coils, a frame for supporting the diaphragm at the peripheral edge of the diaphragm and accommodating the magnets and the yoke, a speaker base for fixing the frame at one side opposed to the diaphragm supporting side for the frame, and a phase rotational member provided between the speaker base and the yoke as an elastic member. A voice is issued from both of the diaphragm and the speaker base. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce an actuator in size. SOLUTION: A first piece 18 made of a magnetic material is arranged at the N-pole side of a magnet and a second piece 20 is arranged at the S-pole side of the magnet on the same axial line via the columnar magnet 22. Holders 16 are provided protrusively in the axial direction of the magnet 22 outside the first piece 18 and the second piece 20. The external surfaces of the magnet 22, the first piece 18, and the second piece 20 are covered by a coil bobbin 12 formed in a cylindrical shape with a non-magnetic material with a prescribed gap from the external surfaces. Coils 24 are provided at the positions on the external surface of the coil bobbin 12 facing the external surface of the first piece 18 and that of the second piece 20. Furthermore, the internal surface of the coil bobbin 12 is retained by dampers 14, which are provided on the holders 16 having flexibility in the axial direction. COPYRIGHT: (C)2009,JPO&INPIT