JPH0160250B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a rice cooker equipped with a digital timer for reserving rice cooking time, which can be explained to customers in an easy-to-understand manner at a store. be.

[Conventional technology]

In recent years, rice cookers equipped with digital timers that use microcomputers to reserve rice cooking time have become popular, but with conventional rice cookers of this type, it is difficult to explain to customers how they work in a short time at stores. When doing so, the actual normal timer mode takes too much time, so there is a drawback that the only way to do this is through a catalog or the like.

[Summary of the invention]

This invention was made to eliminate the above-mentioned drawbacks, and by providing a time saving mode for product explanation in addition to the normal timer mode, it is possible to explain the operation of a digital timer to customers in a short time and in an easy-to-understand manner at a store. The purpose is to provide a rice cooker that can.

[Embodiments of the invention]

An embodiment of the present invention will be described below.

FIG. 1 shows an overall configuration diagram of a rice cooker according to an embodiment.

As is clear from FIG. 1, a mode switching terminal for selecting between the normal timer mode and the product explanation time reduction mode is provided on the control board 2 provided below the pot 1. The mode selection means 4 which inputs the signal realizes each mode of normal timer mode 5 and product explanation time reduction mode 6. In the case of normal timer mode 6, the timer is counted on time on the display 7. configured to display. If the timer is counted on time on the display 7 and in the product explanation time reduction mode 6, the timer is shortened to at least 1/100 of the normal time and the display 7 is displayed.
It is configured to be counted and displayed on the top.

FIG. 2 is a diagram showing the mode switching method of this embodiment.

FIG. 2a shows the mode switching terminal 3 disposed on the control board 2. In this state, the terminals are open and the normal timer mode is implemented.

FIG. 2b shows a state in which the mode switching terminals 3 are short-circuited by the short-circuiting connector 8. In this state, the terminals are short-circuited, and the time saving mode for product explanation is implemented.

FIG. 3 is a circuit diagram showing the electrical connections of the embodiment of FIG. 1. In the figure, 11 is an input circuit 12, a memory 1
3. It is a microcomputer with a built-in CPU 14 and an output circuit 15.

Reference numeral 9 denotes a mode switching circuit between the normal timer mode and the product explanation time reduction mode, which is composed of a mode switching terminal 3 and a resistor 10 connected in series with the mode switching terminal 3;
Connected to 1.

The output of the output circuit 15 is connected to a drive circuit for a four-digit numerical display 7 which is displayed in a dynamic display manner.

The indicators 7a, 7b, 7c, and 7d respectively display the tens digit of the hour, the ones digit of the hour, the tens digit of the minute, and the one digit of the minute.

The output terminal 16 of the output circuit 15 is a segment output terminal of the display 7, and is connected to each segment of the display 7 via seven current control resistors 21. Since this is a dynamic display method, each segment of the display 7a, 7b, 7c, 7d of each digit is commonly connected.

Output terminals 17, 18, 19, 2 of output circuit 15
0 is a digital output, which is sequentially output to the display device 7a via the resistor 22 and transistor 23, the display device 7b via the resistor 24 and transistor 25, and the display device via the resistor 26 and transistor 27. 7c is sequentially displayed on the display 7d via the resistor 28 and transistor 29.

The Vss terminal 30 is a power source for the mode switching circuit 9 and the microcomputer 11.

Next, the operation of the above embodiment will be explained with reference to FIG.

Figure 4 shows memory 1 of microcomputer 11.
3 is a flowchart showing a mode selection program for the normal timer mode and the product explanation time reduction mode stored in FIG.

First, when performing normal reservation cooking, as shown in FIG. 2a, if the mode switching terminal 3 is left open, the input terminal 31 becomes LOW, and the process proceeds to step 33 through step 32. Implement normal timer mode. In this step 33, a program is stored in the memory 13 to count according to the set time and display it on the display 7.

Next, as shown in FIG. 2b, the mode switching terminal 3
When short-circuited with short-circuit connector 8, input terminal 3
1 goes high and steps by step 32.
Proceed to step 34 and implement the product explanation time reduction mode. This step 34 is a program for explaining the operation of the digital timer in an easy-to-understand manner to customers in a short period of time at a store, etc. In other words, the timer is shortened to at least 1/100 of the normal time, counts, and is displayed on the display 7. The program to display is memory 13
is stored in

〔Effect of the invention〕

As described above, according to the rice cooker of the present invention, in addition to the normal timer mode, a rice cooker equipped with a digital timer is provided with a product explanation time reduction mode in which the timer time is shorter than the actual time. To explain the operation of a digital timer to a customer in a short time and in an easy-to-understand manner at a store or the like.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of an embodiment of a rice cooker according to the present invention, Fig. 2 is a diagram showing a mode switching method of this embodiment, Fig. 3 is a circuit diagram showing electrical connections of this embodiment, and Fig. 4 is a diagram showing the mode switching method of this embodiment. The figure is a flowchart showing the operation of this embodiment. In the figure, 5 is a normal timer mode, 6 is a time saving mode for product explanation, 7 is a display, and 11 is a microcomputer.

Claims (1)

[Claims] 1. Product description of a rice cooker equipped with a digital timer for reserving rice cooking time, including a normal timer mode in which the reserved rice cooking is performed at the actual time, and a timer mode in which the timer time is set at a time shorter than the actual time. A rice cooker characterized by having a time saving mode. 2. The rice cooker according to claim 1, wherein the time reduction mode for product explanation is performed with a timer time reduced to at least 1/100 of the time in the normal timer mode.