PURPOSE: To eliminate the effect of distribution of air volume to a front seat even if the distribution of air volume to a rear seat is increased by providing a means for controlling a rotation number to increase the rotation number of a main blower in response to the starting of operation in a rear blower or to increasing of its rotation number.
CONSTITUTION: A main blower 4 is started by a switch 9 and its load circuit is composed of resistances 10A, 11A and 13A in air volume control resistors 10, 11 and 13. A rear blower 7 is started by a switch 14 and is connected to the earth through the resistance 15A in an air volume control resistor 15. And a switch 17 is connected to a terminal 13B by electrifying a relay coil 12a for switching a main blower resistor value. In order to increase the air volume in the rear blower 7, when the resistance 15A in the resistor 15 for controlling the rear blower air volume is moved to the direction of an arrow 21, the resistance 11A is also reduced in synchronization with this, and the load circuit for the main blower 4 is set in a route composed of the switch 9, the resistances 10A, 11A and the switch 17. As a result, the rotation number of the main blower 4 is increased, the air volume is increased, and it is possible to eliminate the effect to a front seat.
NAGAYAMA TOSHIAKI
NAKATANI SHIROU
NAKAMOTO ISATAKE
DOI SHIGENORI
| JPS58218417A | 1983-12-19 |