A ventilation assembly having a main housing that can be pre-installed in a wall or ceiling aperture. A fan assembly can be inserted through the aperture and releasably mounted within the main housing. The fan assembly can be removed from the main housing and replaced without removing the main housing from the wall or ceiling. An accessory component can be releasably mounted to the fan assembly either through the aperture when the fan assembly is mounted or prior to installation of the fan assembly.

An apparatus includes a vibration member, a vibration apparatus at a rear surface of the vibration member and configured to vibrate the vibration member, and a curved supporting member between the vibration member and the vibration apparatus, wherein the curved supporting member includes a first surface adjacent to the vibration apparatus and a second surface opposite to the first surface, and the first surface includes a curved surface.

A display apparatus includes a display panel configured to display an image, and a sound generating device on a rear surface of the display panel and configured to vibrate the display panel to generate sound, wherein the sound generating device includes a plate, a magnet and a center pole on the plate, and an oval-shaped bobbin around the center pole.

A display apparatus includes a display panel configured to display an image, a front member on a front surface of the display panel, a driving circuit on a rear surface of the display panel and connected to the display panel, a supporting frame configured to surround a side surface of the display panel and a side surface of the driving circuit, a first support supported by the supporting frame and on the rear surface of the display panel, and a vibration generating module supported by the first support to vibrate the display panel.

A voice-controlled electronic device that includes an axisymmetric device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include a plurality of microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the plurality of microphones and first and second transducers configured to generate sound waves within different frequency ranges.

An actuator includes a voice coil and a moving magnet assembly. The coil is attached to a panel extending in a plane. A first portion of the coil includes a first set of windings arranged in a spiral extending parallel to the plane. The first set of windings spans a first dimension in a first direction parallel to the plane. The first set of windings is attached to the panel. A second portion of the coil includes a second set of windings extending perpendicular to the plane. The second set of windings spans a second dimension in the first direction. The first dimension is larger than the second dimension. The magnet assembly is suspended from the panel, and includes a magnet positioned within the second portion of the coil. The magnet assembly is configured to vibrate in a second direction perpendicular to the plane during operation of the actuator.

Disclosed is an ultra-thin speaker comprising: a housing; and a magnetic circuit system therein; a vibration system comprising a cone assembly and a voice coil, the cone assembly having a taper ≤25°, a peripheral edge thereof connected to the housing, and a middle part thereof having a through hole, the voice coil is fixedly connected at an edge of the through hole, the voice coil surrounds and is suspended around the magnetic circuit system, being able to vibrate by an action of the magnetic field generated by the system when a sound signal is introduced; and a dust cap assembly comprising a dust cap body, a central region of the dust cap body is fixedly connected to the system, and an edge region of the dust cap body is connected to the cone assembly and is able to expand and contract along with the vibration of the cone assembly.

The invention relates to the field of transducers, in particular linear vibration generators. It concerns a vibration generator, devices comprising such a vibration generator and a related treatment method.

A vibration generator comprising a mass, a coil, a permanent magnet and a housing, wherein the mass can be set in an oscillatory motion with respect to the housing by applying a current to the coil, and the vibration generator further comprising an axle, wherein the oscillatory motion is along the axle, and in that the mass comprises the permanent magnet and the coil is fixed to the housing.

Controlling temperature of a surface of the electronic device. The electronic device includes: a speaker, an adaptive control circuit configured to receive an audio input signal responsive to an audio input power to the speaker and a temperature sensor configured to sense a temperature internal to the electronic device. A temperature signal responsive to the sensed temperature is input to the adaptive control circuit. Responsive to the audio input signal and the temperature signal a power control signal is computed by the adaptive control circuit so that a temperature of the surface of the electronic device at a later time approaches a previously determined target temperature. An audio limiter is configured to limit the audio input power to the speaker responsive to the power control signal.

Disclosed is a reinforcing part for a speaker diaphragm. The reinforcing part includes a body layer, and the body layer includes through-holes penetrating surfaces of two sides of the body layer. The reinforcing part further includes fillers located within the through holes and configured for heat conduction. The fillers have a thermal conductivity higher than that of the body layer. The reinforcing part of the present invention improves the heat conduction capability between two sides of a support layer by providing through holes on the support layer and providing a heat-conducting filler within the through holes.