Automatic air-conditioning apparatus

An automatic air-conditioning apparatus for an automotive vehicle comprising:

• an internal air temperature sensor sensing the internal air temperature of the compartment of the vehicle;
• an external air temperature sensor sensing the temperature of external air;
• a temperature setting unit for setting a desired internal air temperature;
• a temperature display element for normally displaying the internal air temperature but displaying the temperature setting when the internal air temperature is set by said temperature setting unit;
• a temperature setting status indicator energized when the temperature setting set by said temperature setting unit is displayed on said temperature display element;
• and
• a microcomputer carrying out necessary calculations for the purpose of temperature control and temperature display on the basis of the output signals from said internal air temperature sensor, said external air temperature sensor and said temperature setting unit, said microcomputer including first means for displaying the temperature setting on said temperature display element for a predetermined period of time when said temperature setting unit is manipulated, second means for inhibiting said first means from displaying the temperature setting on said temperature display element until the difference between a temperature setting data resulting from manipulation of said temperature setting unit and the presently established temperature setting data established already as operation data exceeds a predetermined value and third means for energizing said temperature setting status indicator, when the temperature setting is displayed on said temperature display element.

An automatic air-conditioning apparatus comprising:

• at least one temperature sensor;
• a temperature setting unit for setting a desired temperature;
• a temperature display element for selectively displaying the temperature sensed by said temperature sensor and the temperature setting set by said temperature setting unit;
• a temperature setting status indicator which is energized when the temperature setting is displayed on said temperature display element;
• and
• a microcomputer carrying out necessary calculations for the purpose of temperature control and temperature display on the basis of the output signals from said temperature sensor and said temperature setting unit, said microcomputer including means for displaying the temperature setting for a predetermined period of time on said temperature display element when said temperature setting unit is manipulated, and means for causing intermittent flashing of said temperature setting status indicator when the temperature sensed by said temperature sensor does not lie within a predetermined temperature range.