Abstract: Temperature sensing device which has a temperature sensing part including a microchip thermistor in the form not greater than a very small thin piece having a volume of 2 mm.sup.3 as a temperature sensing element. The temperature sensing part is connected to an external circuit to which a temperature sense signal is to be transmitted, by lead wires, and the microchip thermistor is connected to the lead wires through fine lead wires having a wire diameter not greater than 0.5 mm.

Abstract: A temperature control method and apparatus responsive to various control conditions to determine the desired amount of temperature control to cause the compartment temperature of a vehicle to approach a desired value. They comprise a first step of producing a first control condition in response to the amount of light incident to the vehicle compartment and a second step of producing a second control condition in response to the amount of heat radiation incident to the vehicle compartment, and a third step whereby the second control condition is adjusted by the first control condition so as to compensate the amount of temperature control in accordance with the adjusted control condition.