Heating device with separate display means for the types of data entered

• US 4,399,352 A
• Filed: 01/03/1980
• Issued: 08/16/1983
• Est. Priority Date: 05/12/1978
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ueda, Shigeki
• Primary Examiner(s): Paschall, M. H.
• Application Number:
  US06/185,913
• Time in Patent Office: 1,321 Days
• Field of Search: 219/490, 219/491, 219/493, 219/492, 219/494, 219/506, 219/10.55 B, 219/10.55 F, 73/352, 99/DIG. 14, 426/233, 340/584, 340/711, 340/717, 340/722, 340/753, 340/347 M, 340/716
• US Class Current: 219/506
• CPC Class Codes: G01D 7/04 using a separate indicating element for each variable
• CPC Class Codes: G01R 13/02 for displaying measured electric variables in digital form
• CPC Class Codes: G01R 13/405 using a plurality of active, i.e. light emitting, e.g. electro-luminescent elements, i.e. bar graphs
• CPC Class Codes: G05D 23/1913 delivering a series of pulses

Abstract

Input setting keys and displays for a heating device such as an electric oven or an electronic range having a digital control section. A key for setting the heating time is provided. By operating this key, the heating time is digitally indicated. A key for setting the heating temperature is also provided. By operating this key, the heating temperature is indicated by lighting a plurality of indication units, thus simplifying the input operation while at the same time improving the viewability of the indication.

Claims

1. A heating device, comprising:

a heating chamber for receiving an object to be heated;

at least one heat source for heating said object;

a main controller for controlling said heat source to heat said object;

time input means for setting a heating time for said object into said main controller;

time display means comprising a first plurality of indicator segments for indicating the heating time controlled by said controller;

temperature input means for setting a heating temperature into said main controller, said temperature input means having a single temperature key and count means for counting one of (a) the number of times said temperature key is repetitively depressed and (b) the period of time during which said temperature key is maintained in its depressed state, said main controller setting the heating temperature in correspondence with one of the number of times said temperature key is repetitively depressed and the period of time during which said temperature key is maintained in its depressed state;

temperature display means comprising a second plurality of indicator segments for indicating the heating temperature controlled by said main controller; and

clock setting means for setting the hour of the day on said time display means, said time display means normally displaying the hour of the day and said temperature display means being maintained in a non-actuated mode;

said time display means being switched from displaying the hour of the day to displaying the heating time and said temperature display means being switched from said non-actuated mode to an initial display mode upon operation of said single temperature key, further operation of said single temperature key displaying the desired heating temperature on said temperature display means.

2. A heating device according to claim 1 which further comprises temperature detecting means coupled to said main controller for detecting the temperature within said heating chamber, said temperature input means, temperature detecting means and main controller cooperating to display simultaneously on said temperature display means the temperature set into said controller by said temperature input means and the temperature detected by said temperature detecting means, one of said temperature indications being on continuously and the other being on intermittently.

3. A heating device according to claim 1 which further comprises temperature detecting means coupled to said main controller for detecting the temperature within said heating chamber, said temperature input means, temperature detecting means and main controller cooperating to display on said temperature display means the temperature set into said controller by said temperature input means and the temperature detected by said temperature detecting means, said temperatures being displayed alternately on said temperature display means.