Abstract: A temperature measuring device includes an ultrasonic sensor attached to a rear surface side of the structural body having the multilayer structure, an acquisition unit configured to, through the ultrasonic sensor, acquire a signal of a reflected wave of an ultrasonic wave incident at the internal side of the structural body, an extraction unit configured to extract, from the signal of the reflected wave, a domain including a reflected wave reflected on a surface on the internal side of the structural body, and an identification unit configured to, based on a signal of the reflected wave in the extracted domain, identify the temperature of the surface on the internal side of the structural body.

Abstract: A heat-dissipating structure including a heat sink having a recessed portion on a first surface facing a heat generator, the recessed portion having a side surface; a heat block fit into the recessed portion, the heat block having a bottom surface and a side surface; and thermally conductive grease in contact with both of the side surface of the recessed portion and the side surface of the heat block, wherein the bottom surface of the heat block is in contact with the heat generator.

Abstract: A heat-dissipating structure including a heat sink having a recessed portion on a first surface facing a heat generator, the recessed portion having a side surface; a heat block fit into the recessed portion, the heat block having a bottom surface and a side surface; and thermally conductive grease in contact with both of the side surface of the recessed portion and the side surface of the heat block, wherein the bottom surface of the heat block is in contact with the heat generator.