Abstract: A sound device for controlling a panel speaker configured to output sound by vibrating a single panel with a plurality of vibration actuators, the sound device includes a controller configured to select a stereo mode in which each of the plurality of vibration actuators is vibrated by a sound signal of each channel included in a content, and a monaural mode in which the plurality of vibration actuators are vibrated by a same sound signal.

Abstract: The liquid crystal display device is provided with: light sources; light guiding plate for guiding light from the light sources to a direction of a liquid crystal panel; reflection sheet to cover the light guiding plate and light sources; frame portion for supporting the light guiding plate and light sources, both of which are covered with the reflection sheet (lighting element), from the upper side of the lighting element; rear face cover for housing the lighting element and fitted with the frame portion; and shield portion disposed between the rear face cover and lighting element. The shield portion is made from high heat conductivity material and shields gaps between the frame portion and rear face cover, gaps between the rear face cover and lighting element, and a plurality of heat discharge holes formed on the bottom of the rear face cover to isolate the display area from the gaps.

Abstract: The liquid crystal display device of the present invention is provided with: light sources; a light guiding plate for guiding light from the light sources to a direction of a liquid crystal panel; a reflection sheet so disposed as to cover the light guiding plate and the light sources; frame portion for supporting the light guiding plate and the light sources, both of which are covered with the reflection sheet (lighting element), from the upper side of the lighting element; a rear face cover for housing the lighting element and being fitted with the frame portion; and a shield portion disposed between the rear face cover and the lighting element. The shield portion is made form a material having high heat conductivity and shields gaps between the frame portion and the rear face cover, gaps between the rear face cover and the lighting element, and a plurality of heat discharge holes formed on the bottom of the rear face cover to isolate the display area from the gaps.