Method and apparatus for controlling vehicular defroster
First Claim
1. A method for controlling a vehicular defroster for operating and controlling an air-conditioning defroster for discharging air-conditioned air against a windshield glass to perform defogging, and an electric heat-operated defroster having a heating wire embedded in said windshield glass to perform defogging therewith, said method comprising the steps of:
- inputting environmental conditions including at least an ambient air temperature and a sunlight intensity when a single defroster selector switch for operating said defroster is switched on;
judging whether or not said inputted ambient air temperature and said sunlight intensity are lower than previously set predetermined values;
operating only said air-conditioning defroster when it is judged that at least one of said inputted ambient air temperature and said sunlight intensity is higher than said predetermined value; and
operating said electric heat-operated defroster only when it is judged that both of said inputted ambient air temperature and said sunlight intensity are lower than said predetermined values.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicular defroster control system comprising a single defroster selector switch for alternatively operating the air-conditioning defroster only or both the air-conditioning defroster and the electric heat-operated defroster, an environmental condition input unit for inputting environmental conditions including at least an ambient air temperature and a sunlight intensity, and an operation control means for judging whether or not the inputted ambient air temperature and the sunlight intensity are lower than previously set predetermined values, and operating the electric heat-operated defroster only when it is judged that both of the inputted ambient air temperature and the sunlight intensity are lower than the predetermined values.
17 Citations
9 Claims
-
1. A method for controlling a vehicular defroster for operating and controlling an air-conditioning defroster for discharging air-conditioned air against a windshield glass to perform defogging, and an electric heat-operated defroster having a heating wire embedded in said windshield glass to perform defogging therewith, said method comprising the steps of:
-
inputting environmental conditions including at least an ambient air temperature and a sunlight intensity when a single defroster selector switch for operating said defroster is switched on; judging whether or not said inputted ambient air temperature and said sunlight intensity are lower than previously set predetermined values; operating only said air-conditioning defroster when it is judged that at least one of said inputted ambient air temperature and said sunlight intensity is higher than said predetermined value; and operating said electric heat-operated defroster only when it is judged that both of said inputted ambient air temperature and said sunlight intensity are lower than said predetermined values. - View Dependent Claims (2, 3, 4)
-
-
5. An apparatus for controlling a vehicular defroster for operating and controlling an air-conditioning defroster for discharging air-conditioned air against a windshield glass to perform defogging, and an electric heat-operated defroster having a heating wire embedded in said windshield glass to perform defogging therewith, said apparatus comprising:
-
a single defroster selector switch for selectively operating any of said air-conditioning defroster only, said electric heat operated defroster only, or both said air-conditioning defroster and said electric heat-operated defroster; an environmental condition input unit for inputting environmental conditions including at least an ambient air temperature and a sunlight intensity; and an operation control means for judging whether or not said inputted ambient air temperature and said sunlight intensity are lower than previously set predetermined values, and operating said electric heat-operated defroster only when it is judged that both of said inputted ambient air temperature and said sunlight intensity are lower than said predetermined values. - View Dependent Claims (6, 7, 8, 9)
-
Specification