A control device for controlling power delivered to an electrical load may illuminate an area around a button of the control device, such as a gap formed between the button and an opening of a faceplate of the control device. The control device may illuminate the gap to provide a nightlight feature, to provide feedback (e.g., a status of the electrical load), and/or to indicate a selected preset. The button may have a cap portion that may be actuated by a user and a diffuser portion that may contact a rear surface of the cap portion and may conduct light emitted by an internal light source to illuminate the gap around the button.

In one embodiment, an oral irrigator includes a reservoir, a base configured to support the reservoir, and a button assembly coupled to the base. The button assembly may include a button, a spring coupled to the button, and a seal coupled to the spring. The button may be movable between an original position and an actuation position. The spring may be configured to deform in response to a user input force moving the button from the original position to the actuation position, and to resiliently return the button to the original position in response to cessation of the user input force on the button. The seal may inhibit fluid from entering through the spring into the base.

A control device for controlling power delivered to an electrical load may illuminate an area around a button of the control device, such as a gap formed between the button and an opening of a faceplate of the control device. The control device may illuminate the gap to provide a nightlight feature, to provide feedback (e.g., a status of the electrical load), and/or to indicate a selected preset. The button may have a cap portion that may be actuated by a user and a diffuser portion that may contact a rear surface of the cap portion and may conduct light emitted by an internal light source to illuminate the gap around the button.

A switch structure includes a light-emitting part configured to receive power from a vehicle and to radiate light, a moving block located so as to surround the light-emitting part, a light-transmissive part configured to allow light radiated from the light-emitting part to pass through an opening in the moving block, and a film-printing layer located on a top surface of the light-transmissive part and including a symbol.

An electronic device and a knob module thereof are provided. The knob module includes a circuit board, a rotary encoder, a light guide structure, a plurality of light emitting units, and a rotation cover. The rotary encoder is disposed on the circuit board. The light guide structure is disposed on the circuit board. The light guide structure includes a light guide ring and an annular light guide wall. The light guide ring surrounds the rotary encoder. The annular light guide wall extends downward from the light guide ring to abut against the circuit board. The plurality of light emitting units is disposed on the circuit board and located between the annular light guide wall and the rotary encoder for emitting light toward the annular light guide wall. The rotation cover is disposed on the rotary encoder.

A circuit structure includes a light-transmissive insulation layer, a patterned conductive layer and an electronic component. The patterned conductive layer is disposed on the light-transmissive insulation layer. The electronic component is disposed on the patterned conductive layer and electrically connected to the patterned conductive layer.

A hardware product for creating a light ring and a dead front effect. The product may include a housing with an opening. The hardware product may also include a button positioned within the opening and configured to be depressed by a user. The button is constructed using a two-part molding process and includes a first shot and a second shot. The first shot is configured to disperse light around the perimeter shape of the opening. The second shot is constructed from an optically opaque or semi-opaque material. A single light-emitting component electrically coupled to the circuit board provides light for creating the light ring.

An electronic device and a knob module thereof are provided. The knob module includes a circuit board, a rotary encoder, a light guide structure, a plurality of light emitting units, and a rotation cover. The rotary encoder is disposed on the circuit board. The light guide structure is disposed on the circuit board. The light guide structure includes a light guide ring and an annular light guide wall. The light guide ring surrounds the rotary encoder. The annular light guide wall extends downward from the light guide ring to abut against the circuit board. The plurality of light emitting units is disposed on the circuit board and located between the annular light guide wall and the rotary encoder for emitting light toward the annular light guide wall. The rotation cover is disposed on the rotary encoder.

In one embodiment, an oral irrigator includes a reservoir, a base configured to support the reservoir, and a button assembly coupled to the base. The button assembly may include a button, a spring coupled to the button, and a seal coupled to the spring. The button may be movable between an original position and an actuation position. The spring may be configured to deform in response to a user input force moving the button from the original position to the actuation position, and to resiliently return the button to the original position in response to cessation of the user input force on the button. The seal may inhibit fluid from entering through the spring into the base.

A printer includes: a body defining a media enclosure configured to receive a media supply; an indicator assembly supported by an outer wall of the body, the indicator assembly including a plurality of substantially contiguous illumination surfaces illuminated by respective ones of a set of lights supported within the body; a controller supported by the body, the controller configured to: (i) obtain an operational status of the printer, (ii) retrieve, from a mapping repository, a set of notification control parameters corresponding to the operational status, and (iii) control the set of lights according to the notification control parameters.