Vehicular heating system

Abstract

A vehicular heating system comprising a passenger compartment air-conditioner and a radiative heater which heats a foot area of a passenger, said vehicular heating system detecting foot vent heat which said foot vent air flow has and controlling said passenger compartment air-conditioner and said radiative heater in accordance with that heat.

1 . A vehicular heating system comprising
 a passenger compartment air-conditioner with an air-conditioning unit controlling passenger compartment air-conditioning by calculating a target blowing-out temperature of said air-conditioning unit in accordance with information on the environment inside and outside of the passenger compartment and vehicle operating information, wherein a foot vent air flow of said air-conditioning unit being adjustable, and   a radiative heater which heats a foot area of a passenger,   said vehicular heating system detecting foot vent heat which said foot vent air flow has and controlling said passenger compartment air-conditioner and said radiative heater in accordance with that heat.   
     
     
         2 . A vehicular heating system as set forth in  claim 1 , wherein the system controls said passenger compartment air-conditioner and said radiative heater so that a ratio between the foot vent heat which said foot vent air flow has and the electric power input to the radiative heater gives the same warmness sense level at the feet of the passenger. 
     
     
         3 . A vehicular heating system as set forth in  claim 2 , wherein
 when the engine water temperature is a predetermined value or more, the system makes said foot vent air flow increase and makes the input electric power of said radiative heater decrease so that the ratio between the foot vent heat which said foot vent air flow has and the electric power input to the radiative heater gives the same warmness sense level at the feet of the passenger and   when the engine water temperature is less than the predetermined value, the system makes said foot vent air flow decrease and makes the electric power input to the radiative heater increase so that the ratio between the foot vent heat which said foot vent air flow has and the electric power input to the radiative heater gives the same warmness sense level at the feet of the passengers.   
     
     
         4 . A vehicular heating system as set forth in  claim 2 , wherein
 when the engine water temperature is a predetermined value or more, the system turns said radiative heater OFF,   when the engine water temperature is less than the predetermined value, the system turns said radiative heater ON and makes said foot vent air flow decrease and makes the electric power input to said radiative heater increase so that the ratio between the foot vent heat which said foot vent air flow has and the electric power input to the radiative heater gives the same warmness sense level at the feet of the passengers.   
     
     
         5 . A vehicular heating system as set forth in  claim 2 , wherein said foot vent air flow is a vent air flow of a foot vent. 
     
     
         6 . A vehicular heating system as set forth in  claim 2 , wherein said foot vent air flow is a total of the vent air flow of a foot vent and the vent air flow of a knee vent. 
     
     
         7 . A vehicular heating system as set forth in  claim 2 , wherein said system adjusts said foot vent air flow by a blower of said air-conditioning unit. 
     
     
         8 . A vehicular heating system as set forth in  claim 2 , wherein said system adjusts said foot vent air flow by a door opening degree of a foot vent of said air-conditioning unit. 
     
     
         9 . A vehicular heating system as set forth in  claim 2 , wherein said system adjusts said foot vent air flow by a door opening degree of a knee vent of said air-conditioning unit. 
     
     
         10 . A vehicular heating system as set forth in  claim 3 , wherein when the engine water temperature is less than a predetermined value, said system makes said foot vent air flow zero. 
     
     
         11 . A vehicular heating system as set forth in  claim 2 , wherein said system uses said target blowing-out temperature of the air-conditioning unit, said temperature setting of the air-conditioning unit, an outside air temperature, an inside air temperature, a foot area temperature, or a seat heater temperature as the basis to control said radiative heater ON and OFF. 
     
     
         12 . A vehicular heating system which adjusts a heating element surface member temperature of a radiative heater which warms a passenger in accordance with temperature information inside the passenger compartment, in which vehicular heating system
 before a predetermined time elapses from when heating by said vehicular heating system is turned ON or at the time of elapse,   said heating element surface member temperature is controlled based on a setting for which a first upper threshold value where the passenger will not suffer high temperature burn injuries is set and which is set to increase proportionally or in a monotone functional way in accordance with temperature information inside the passenger compartment at below that upper threshold value, and   after a predetermined time elapses from when heating by said vehicular heating system is turned ON,   said heating element surface member temperature is controlled to not more than a second upper threshold value where the passenger will not suffer low temperature burn injuries.   
     
     
         13 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is the target blowing-out temperature of the air-conditioning unit which controls the passenger compartment air-conditioning in accordance with information on the environment inside and outside of the passenger compartment. 
     
     
         14 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is the temperature setting of the air-conditioning unit which controls the passenger compartment air-conditioning in accordance with information on the environment inside and outside of the passenger compartment. 
     
     
         15 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is the temperature setting when an operating mode of the passenger compartment air-conditioning is manual. 
     
     
         16 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is a foot area temperature. 
     
     
         17 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is a manual temperature setting of said radiative heater. 
     
     
         18 . A vehicular heating system as set forth in  claim 12 , wherein said temperature information inside the passenger compartment is a manual temperature setting of a seat heater.