A heating apparatus for a window glass of a vehicle, said heating apparatus including a heater and a control unit for controlling electric power supplied to said heater; wherein the heater is configured to generate heat for melting ice adhering to an imaging glass part which includes a whole of a particular part of said window glass, said particular part corresponding to a shooting range of an onboard camera which is disposed in an interior space of said vehicle and photographs an outside of said vehicle through said window glass, wherein said heater is configured to heat said imaging glass part whereby the heater is configured to apply an amount per unit area of heat to an upstream specific part of said imaging glass part greater than an amount per unit area of heat which the heater is configured to apply to a downstream part of said imaging glass part, said upstream specific part being located upstream in a liquid flowing direction in which, when in use, liquid flows on a surface outside said vehicle cabin of said imaging glass part and said downstream part being located downstream of said upstream specific part in said liquid flowing direction, characterized in that the heating apparatus further comprises a vehicle speed sensor configured to detect a vehicle speed of said vehicle; wherein: said heater comprises a first heater and a second heater; and said control unit is configured to control said electric power supplied to said heater, in such a manner as to: supply electric power to the first heater to heat a whole or a part of an upper part, as said upstream specific part, when said vehicle speed is equal to or lower than a threshold vehicle speed, wherein said imaging glass part is divided into two parts in a vertical direction along said window glass, said two parts including said upper part and a lower part; and supply electric power to the second heater to heat a whole or a part of said lower part, as said upstream specific part, when said vehicle speed is higher than said threshold vehicle speed. wherein the heater is configured to generate heat for melting ice adhering to an imaging glass part which includes a whole of a particular part of said window glass, said particular part corresponding to a shooting range of an onboard camera which is disposed in an interior space of said vehicle and photographs an outside of said vehicle through said window glass, wherein said heater is configured to heat said imaging glass part whereby the heater is configured to apply an amount per unit area of heat to an upstream specific part of said imaging glass part greater than an amount per unit area of heat which the heater is configured to apply to a downstream part of said imaging glass part, said upstream specific part being located upstream in a liquid flowing direction in which, when in use, liquid flows on a surface outside said vehicle cabin of said imaging glass part and said downstream part being located downstream of said upstream specific part in said liquid flowing direction, characterized in that the heating apparatus further comprises a vehicle speed sensor configured to detect a vehicle speed of said vehicle; wherein: said heater comprises a first heater and a second heater; and said control unit is configured to control said electric power supplied to said heater, in such a manner as to: supply electric power to the first heater to heat a whole or a part of an upper part, as said upstream specific part, when said vehicle speed is equal to or lower than a threshold vehicle speed, wherein said imaging glass part is divided into two parts in a vertical direction along said window glass, said two parts including said upper part and a lower part; and supply electric power to the second heater to heat a whole or a part of said lower part, as said upstream specific part, when said vehicle speed is higher than said threshold vehicle speed. said heater comprises a first heater and a second heater; and said control unit is configured to control said electric power supplied to said heater, in such a manner as to: supply electric power to the first heater to heat a whole or a part of an upper part, as said upstream specific part, when said vehicle speed is equal to or lower than a threshold vehicle speed, wherein said imaging glass part is divided into two parts in a vertical direction along said window glass, said two parts including said upper part and a lower part; and supply electric power to the second heater to heat a whole or a part of said lower part, as said upstream specific part, when said vehicle speed is higher than said threshold vehicle speed. supply electric power to the first heater to heat a whole or a part of an upper part, as said upstream specific part, when said vehicle speed is equal to or lower than a threshold vehicle speed, wherein said imaging glass part is divided into two parts in a vertical direction along said window glass, said two parts including said upper part and a lower part; and supply electric power to the second heater to heat a whole or a part of said lower part, as said upstream specific part, when said vehicle speed is higher than said threshold vehicle speed.