Abstract: A battery temperature control device of a vehicle includes a battery, a vehicle-interior side air introducing means, a cooling unit, an air refluxing means and a control unit. The battery is mounted on the vehicle. The vehicle-interior side air introducing means is capable of introducing air from a passenger compartment of the vehicle. The cooling unit is disposed in the vehicle-interior side air introducing means to cool the air. The air refluxing means is capable of refluxing the air that has passed through the battery to the passenger compartment. The control unit is capable of controlling the air refluxing means to allow and forbid a communication between the air refluxing means and the passenger compartment according to a temperature of the battery.

Abstract: A warning device for a distance between cars, for measuring a distance between a car and an object in front of the car, judging the possibility of danger on the basis of distance data thus obtained, and generating an alarm in the case where it is judged to be dangerous. The warning device provides a first alarm (a rear-end collision alarm) generated in a condition of alert which necessitates deceleration or braking, and a second alarm (an alarm for a distance between cars) generated in a condition of alert which does not necessitate deceleration nor braking, the first and second alarms, respectively, being judged by separate formulae for determining. Accordingly, it is possible to positively generate an alarm when deceleration or braking is necessitated. Further, the warning device discriminates a kind of an object being measured (a moving body, obstruction, guardrail or the like) to judge danger according to the kind of the discriminated object.