Display device for vehicle
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.
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; and
a 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; and
when 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.