WINDOW DEFOGGER DEVICE FOR VEHICLE

• Main Author: YAMAMOTO NORINARI
• Format: Patent
• Language: English
• Published: 10.05.1986
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; PERFORMING OPERATIONS; SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; VEHICLES IN GENERAL

PURPOSE:To improve clear performance of window glass in high speed traveling thereof by disconnecting a timer circuit from a defogger hot wire, and conducting a current through the defogger hot wire directly from a battery. CONSTITUTION:With a vehicle exceeding a set vehicle speed in high speed traveling thereof, a voltage value corresponding to a vehicle speed provided from a F-V circuit 22 based on detection by a vehicle speed sensor 20 becomes more than a set voltage value coresponding to a set vehicle speed of a comparator 24. Accordingly, a signal is issued from the comparator 24 to a base of a transistor 26 for driving a relay, whereby a relay 28 is driven. Moreover, since a fixed side contact and a movable side contact are conducted, a current is directly supplied to a defogger hot wire 10 from a battery 16 via an ignition switch 12 and a defogger switch14, whereby a timer circuit 18 is compeletely disconnected. Thus, clear performance of window glass in high speed traveling can be improved.