Abstract: The present invention provides a display device that facilitates product inspection and maintenance. A button section is mounted to a back cabinet, and a power-source circuit board is fitted into a circuit-board fitting slit. Furthermore, the power-source circuit board is locked and fixed by a first circuit-board locking claw, and a main circuit board is locked and fixed by a second circuit-board locking claw. A speaker integrally assembled in a speaker holder is locked and fixed by a speaker locking claw, and thereafter a display panel is caused to be held by a display panel standing holding portion in a standing manner. The wire connection work of a display panel, each of the circuit boards, and the like is performed, the display panel is brought down and placed on a display panel placement portion, a front cabinet is mounted, and a leg portion is mounted to a leg-portion mounting portion.

Abstract: Damage to a part when assembling a substrate from behind a casing mounted with push buttons is prevented. When a circuit substrate is mounted in a casing to which a push button is attached, a circuit substrate is inserted along a guide groove of the push button. At this time, the contact section is pushed by the circuit substrate and the circuit substrate is engaged with the contact section with a second hinge section deflected. This causes the circuit substrate to be parallel with a pushing section with a tiny gap in between and a pushing operation of an operation button deforms a first hinge section and the pushing section turns ON/OFF a switch.