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A display device for a vehicle is provided in a vehicle having idling stop function and includes: a fuel economy display unit to display fuel economy information on the vehicle; an first fuel economy display unit to calculate a first fuel economy based on a distance traveled and fuel consumption in

A display device for a vehicle is provided in a vehicle having idling stop function and includes: a fuel economy display unit to display fuel economy information on the vehicle; an first fuel economy display unit to calculate a first fuel economy based on a distance traveled and fuel consumption in a first period; and a second fuel economy calculation unit to calculate an second fuel economy based on a distance traveled and fuel consumption in a second period shorter than the first period. The device also includes a display control unit to control display of the fuel economy display unit based on a fuel economy difference between the first and second fuel economies. When the second fuel economy reaches a reference value before performing idling stop, the fuel economy display control unit controls the fuel economy display unit based on the last fuel economy difference without updating the difference.

대표청구항 ▼

1. A display device for a vehicle configured to be provided in a vehicle having an idling stop function to cause an engine to stop, the display device comprising: a fuel economy display unit to display fuel economy information on the vehicle;a first fuel economy calculation unit to calculate a first

1. A display device for a vehicle configured to be provided in a vehicle having an idling stop function to cause an engine to stop, the display device comprising: a fuel economy display unit to display fuel economy information on the vehicle;a first fuel economy calculation unit to calculate a first fuel economy based on a distance traveled and a fuel consumption in a first period;a second fuel economy calculation unit to calculate a second fuel economy based on a distance traveled and a fuel consumption in a second period that is shorter than the first period; anda display control unit configured to control the display of the fuel economy display unit based on a fuel economy difference between the first fuel economy and the second fuel economy,wherein when the second fuel economy reaches a reference value before idling stop is performed, the display control unit controls the fuel economy display unit based on a last fuel economy difference without updating the fuel economy difference,wherein the reference value is a minimum value or a maximum value in a calculation range of the second fuel economy. 2. The display device for a vehicle according to claim 1, wherein the fuel economy display unit is a needle-type meter having a needle;when the fuel economy difference is zero, the display control unit operates the needle to indicate a reference position;when the fuel economy difference is calculated to be a positive value, the display control unit operates to move the needle from the reference position to one side; andwhen the fuel economy difference is calculated to be a negative value, the display control unit operates to move the needle from the reference position to the other side. 3. The display device for a vehicle according to claim 2, wherein the display control unit operates the needle to indicate the reference position when idling stop is performed. 4. The display device for a vehicle according to claim 1, further comprising: a mode setting unit configured to set an idling stop driving mode in which idling stop is performed according to a state of the vehicle when the vehicle is stopped, wherein the idling stop driving mode is set before the idling stop is performed. 5. The display device for a vehicle according to claim 2, further comprising: a mode setting unit configured to set an idling stop driving mode in which idling stop is performed according to a state of the vehicle when the vehicle is stopped, wherein the idling stop driving mode is set before the idling stop is performed. 6. The display device for a vehicle according to claim 3, further comprising: a mode setting unit configured to set an idling stop driving mode in which idling stop is performed according to a state of the vehicle when the vehicle is stopped, wherein the idling stop driving mode is set before the idling stop is performed.