A display control device includes an image creating unit, a display output unit, an update time measuring unit, and a blinking control unit. The blinking control unit determines a bright time and a dark time to be integral multiples of an update time so that a blinking frequency is within a tolerance frequency range. In a blinking control, the blinking control unit executes an on-display control to instruct the image creating unit to create a bright image for a number of times of a value obtained by dividing the bright time by the update time, and then executes an off-display control to instruct the image creating unit to create the dark image for a number of times of a value obtained by dividing the dark time by the update time, and repeats the on-display control and the off-display control until the blinking control ends.