Abstract: It is an object to provide a speaker including a strong magnetic circuit and a method of manufacturing a speaker. To achieve the object, a speaker according to the present technology includes an outer magnet and an inner magnet. The outer magnet has a ring shape and is magnetized along an axial direction of the ring shape. The inner magnet has a circular outer shape when viewed from the axial direction of the outer magnet, is magnetized in a direction opposite to a direction of the outer magnet along the axial direction, and is disposed inside the outer magnet through a gap.

Abstract: An air conditioning device has: a refrigerant circuit that includes a compressor, a switching valve, a cascade heat exchanger, an expansion valve and an outdoor heat exchanger connected to one another by a first pipe through which a refrigerant flows, and that performs a defrosting operation in which the refrigerant discharged from the compressor is introduced into the outdoor heat exchanger; a heat-transfer medium circuit that includes a pump, the cascade heat exchanger, and the indoor heat exchanger connected to one another by a second pipe through which a heat-transfer medium flows; and a control device that controls the compressor and the pump. When an amount of heat storage of the heat-transfer medium is less than a threshold, the control device reduces the heating capability of the indoor heat exchanger when the air conditioning device transitions from a heating operation to the defrosting operation.

Abstract: A sliding lid construction includes an upper-side lid member and lower-side lid member sliding relatively to one another, thereby changing their relative positional relationships at the open position and close position. At the open position, the upper-side lid member and lower-side lid member overlap one another in the up/down direction; at the close position, they cancel the overlap. The lower-side lid member includes a lower-side comb-shaped portion provided with protrusions and depressions on the top face in the width direction crossing the sliding direction perpendicularly, and a placement portion enabling a user to place an article thereon. The upper-side lid member includes an upper-side comb-shaped portion provided with protrusions and depressions on the bottom face in the width direction, and an inclined-face portion formed at the leading-side end in the sliding direction, and directed upward at an acute angle obliquely to the sliding direction.

Abstract: A sliding lid construction includes an upper-side lid member and lower-side lid member sliding relatively to one another, thereby changing their relative positional relationships at the open position and close position. At the open position, the upper-side lid member and lower-side lid member overlap one another in the up/down direction; at the close position, they cancel the overlap. The lower-side lid member includes a lower-side comb-shaped portion provided with protrusions and depressions on the top face in the width direction crossing the sliding direction perpendicularly, and a placement portion enabling a user to place an article thereon. The upper-side lid member includes an upper-side comb-shaped portion provided with protrusions and depressions on the bottom face in the width direction, and an inclined-face portion formed at the leading-side end in the sliding direction, and directed upward at an acute angle obliquely to the sliding direction.