DISPLAY DEVICE, AND WATER HEATER INCLUDING THE SAME

PROBLEM TO BE SOLVED: To provide a display device that raises the awareness of users about energy-saving, and excels in convenience. SOLUTION: The display device includes a timer unit 1, a measuring unit 2, a storing unit 3, a display unit 4, and a controller 5. A second graph 23 is displayed on the display unit 4 so as to be in parallel with a time coordinate axis 19 of a first graph 18. The controller 5 is configured to display: as the first graph 18, a first accumulated value that is an energy consumption amount for each of first periods; an accumulated value of the energy consumption amount as a bar graph value of the second graph 23; and a current target value at a position in the second graph 23, wherein the position corresponds to a present time point of the time coordinate axis 19 of the first graph 18, and the current target value refers to a target value of the accumulated value of the energy consumption amount from a start time point of the second period until the present time point. COPYRIGHT: (C)2011,JPO&INPIT