Abstract: An electronic device comprising: a circuit; an enclosure which stores the circuit; and an earth plate which is provided at the enclosure and exposes to an outside.

Abstract: A diffuser which forms a first acoustic passage that sound waves propagate and which radiates the sound waves to an outer diameter direction between a diaphragm and an annular conical surface of a first reflection member, and forms a second acoustic passage the sound waves which pass the opening of the first reflection member propagate and which radiates the sound waves to an outer diameter direction between the annular concave surface of the first reflection member and a conical surface of a second reflection member.

Abstract: A speaker device includes: a speaker unit that includes an acoustic radiation portion; a first box section configured to contain the inserted speaker unit in the box; a support member that pushes the speaker unit against a back wall in the first box section, thereby supporting the speaker unit; a flexible front cushion compressed and contacted between the speaker unit and the support member; and a flexible rear cushion compressed and contacted between the speaker unit and the back wall in the first box section. The speaker unit is pushed and supported by the support member and the back wall of the first box section through the front cushion and the rear cushion.

Abstract: Displacement symmetry of a diaphragm is improved to prevent the occurrence of troubles such as diaphragm rolling or the occurrence of abnormal noise, thereby providing high reproduced sound quality. The diaphragm includes an annular edge portion having a convex radial cross section formed by molding a sheet-like member or a film-like member. The edge portion has a plurality of rotationally symmetrical recessed ribs formed by recessing a convex surface. The plurality of recessed ribs includes at least a first rib disposed along a first prescribed line intersecting, at an angle of 45°, a first radial line passing a center point, and a second rib arranged in a position not intersecting but adjacent to the first rib and disposed along a second prescribed line intersecting the second radial line at a predetermined angle of less than 45°.

Abstract: The vibrator includes a frame defining an internal space, a voice coil fixed to the frame in the internal space, a shaft member arranged along an axial direction of the coil in the internal space, a magnetic circuit arranged slidably relative to the shaft member and having a magnetic gap in which the coil is arranged, and a compression coil spring arranged between one end side of the magnetic circuit and one end side of the frame along the axial direction in the internal space. The compression coil spring is a coiled wave spring configured such that a plate-shaped steel wire is multiple-wound in a spiral shape in a circumferential direction of the shaft member to alternately form a peak portion and a trough portion at an equal interval and the peak portion and the trough portion contact each other in the axial direction.

Abstract: There is provided a diaphragm or a dust cap configured to emit a sound wave and an electrodynamic speaker unit including the diaphragm or the dust cap. The speaker unit is configured so that a great peak dip of sound pressure frequency characteristics due to influence of a divided vibration mode can be prevented and excellent reproduced sound quality can be provided. In the diaphragm or the dust cap, a recessed-raised portion imitating a wing of an insect is formed at least on one surface of a diaphragm portion configured to emit a sound wave. Preferably, the recessed-raised portion is formed based on data obtained by measurement of an actual shape of a wing vein of the insect or data of a Voronoi diagram imitating the wing vein of the insect.

Abstract: An edge portion of a diaphragm is configured such that multiple recessed ribs formed by recessing of a raised surface are provided in an inclination direction inclined with respect to a radial line passing through a center point and are arranged rotationally symmetrically, and among the recessed ribs and a fixing portion defined on the outermost peripheral side of the diaphragm, defines an outer peripheral edge portion at which no recessed ribs are formed. A voice coil is coupled to a voice coil attachment portion. A lead line is fixed with a first adhesive forming a first adhesive layer along a valley portion defined between a certain recessed rib and an adjacent recessed rib thereof on a back side of the edge portion, and is further fixed with a second adhesive forming a second adhesive layer with the lead line being curved along the outer peripheral edge portion.

Abstract: A system that includes an electronic device and a server configured to communicate via a network, and the electronic device includes first circuitry that stores firmware in a first memory of the electronic device; sends a network address of the electronic device to the server; and updates the firmware based on an update package received from the server in response to sending the network address, and the server includes second circuitry that stores, in a second memory of the server, a plurality of network addresses of a plurality of the electronic devices, and a plurality of update packages; and sends one of the plurality of update packages to the electronic device based on the network address of the electronic device which is sent from the electronic device.

Abstract: Provided is a wearable audio input/output device. The wearable audio input/output device is provided with a frame, a first audio collection unit, a second audio collection unit, and a first speaker. The frame can be mounted to a user. The first audio collection unit is provided on the frame. The second audio collection unit is provided on the frame. The second audio collection unit is arranged such that the distance between the first audio collection unit and mouth of the user is less than the distance between the second audio collection unit and the mouth of the user. The first speaker is provided on the frame between the first audio collection unit and the second audio collection unit.

Abstract: The present invention is intended to provide constant drive conditions of a relay switch. A relay drive circuit includes a current mirror circuit, a current suppression circuit 26, and a transistor Q3. The current mirror circuit includes a transistor Q1, a first resistor element R1, a transistor Q2, and a second resistor element R2. A relay coil 18 is provided on a current supply path extending from a collector terminal of the transistor Q1 to an earth conductor. The current suppression circuit 26 includes a capacitor C1 as a current suppression element configured to suppress, after conduction between an emitter terminal and a collector terminal of the transistor Q2 has been made, the current flowing through the current suppression element itself as compared to that in such conduction.

Abstract: According to the present invention, in a speaker device including a microphone, sound propagating from a speaker unit to the microphone through a housing is effectively reduced, and noise picked up by the microphone is reduced. The speaker device includes the housing configured to support the speaker unit, and a film-shaped elastic body configured to support the microphone. The housing includes a holding portion configured to hold the elastic body with a distance from the microphone. The elastic body has a through-hole, a support portion on which the microphone is supported is provided around the through-hole on one side of the elastic body, and the elastic body is, at an outer peripheral portion separated from the support portion, held at the holding portion.

Abstract: A vibrator includes a magnetic circuit having a magnetic gap, a voice coil having a coil arranged in the magnetic gap and a bobbin around which the coil is wound on one end side, a flange member coupled to the other end side of the bobbin protruding from the magnetic circuit, and an elastic coupling member coupling the magnetic circuit and the flange member so that the magnetic circuit and the flange member can vibrate relative to each other. The elastic coupling member includes a first fixed portion, a second fixed portion, and an elastic deformation portion coupling the first fixed portion and the second fixed portion via elastically-deformable coupling portions. The elastic coupling member is configured such that the first fixed portion, the second fixed portion, and the elastic deformation portion are integrally formed, and substantially houses the magnetic circuit, the voice coil, and the flange member inside.

Abstract: An electronic device comprising: a substrate; a first elastic body which is positioned on one surface of the substrate; and a second elastic body which is positioned under the other surface of the substrate and is harder than the first elastic body, wherein the first elastic body and the second elastic body sandwich and hold the substrate.

Abstract: An electronic device that includes a rotary operator that changes a parameter value of the device itself, the rotary operator having a first contact region and a second contact region positioned on an opposite side of the first contact region with respect to a rotation axis of the rotary operator and being rotatably operated in such a manner that a finger of a user slides in a circumferential direction of the rotary operator with the finger contacting any of the first and second contact regions; and a changing direction setting unit that sets a changing direction of the parameter value with respect to a rotation direction of the rotary operator.

Abstract: The present invention relates to a canal type earphone configured such that an outlet for a sound wave to be reproduced is inserted into an inlet of a user's ear canal. The earphone includes an electrodynamic speaker unit configured to electroacoustically convert an audio signal into a high-frequency sound wave containing a band component having a higher frequency than that of an audible band of a human being, thereby emitting the high-frequency sound wave; an electromagnetic speaker unit configured to electroacoustically convert the audio signal into a low-frequency sound wave containing more band components having a lower frequency than that of the high-frequency sound wave, thereby emitting the low-frequency sound wave; and a housing to the inside of which the electrodynamic speaker unit and the electromagnetic speaker unit are attached.

Abstract: A switching power supply comprising: a control circuit which is provided at a primary side and controls a switching element based on a value which is fed back from a secondary side; a transformer; a secondary side rectifier element which rectifies voltage which is supplied from the transformer; and a secondary side smooth element which smoothes voltage which is rectified by the rectifier element, wherein voltage which is smoothed by the smooth element is supplied to an amplifier and voltage which is smoothed by the smooth element is fed back to the control circuit, further comprising: a diode which is connected between the smooth element and the amplifier in series.

Abstract: There are provided headphones and a speaker unit having proper acoustic properties and exhibiting excellent reproduced sound quality even in the case of providing air holes at a damping member. The headphones include a speaker unit having a diaphragm and a frame supporting an outer peripheral portion of the diaphragm, a housing configured to house the speaker unit, and a damping member made of a material exhibiting air permeability and attached to cover an opening of the frame through which a sound wave emitted from the diaphragm passes and/or an opening of the housing. The damping member has one or more air holes formed by removal of the material forming the damping member. A secondary damping member is attached to an annular edge portion defining each air hole, thereby reducing vibration of the edge portion.

Abstract: Provided is a rotary knob rotational structure being less susceptible to the influence of variation in the dimensions of a rotary knob and reducing backlash of the rotary knob while providing a suitable magnitude of rotational resistance to the rotary knob. The rotary knob rotational structure includes an annular sheet 22 interposed between a device body and the rotary knob 14, an attachment member 24 configured to attach a fixed portion 22a of the annular sheet 22 to the device body with the fixed portion 22a being interposed between the attachment member 24 and the device body, and a body-side protrusion 26 contacting the annular sheet 22 on the outside of the fixed portion 22a in the radial direction of the annular sheet 22 to warp the annular sheet 22 toward the rotary knob 14.