JP2006064275A - Display device for cooking appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a problem in use to the minimum, and to reduce a luminance of display to increase a service life of a display element and to save power. <P>SOLUTION: This display device has: a control part 2 performing drive with a battery 1 as a power source; an input means 16 inputting an operation signal to the control part 2; load parts 3, 4 adjusting a combustion state by an output signal from the control part 2; and a display means 5 displaying the combustion state. When time is up in a first timer means starting when an ignition signal is outputted from the control part 2, the display means 5 reduces the display to the prescribed luminance. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device for a cooking appliance that optimizes display brightness with respect to display of cooking information such as thermal power display, and extends the life of the display element and saves power.

  Conventionally, a display device of this type of cooking appliance has been proposed to lower the luminance in order to prevent the display element from deteriorating because the display time is long (see, for example, Patent Document 1).

FIG. 6 shows a display device for a conventional cooking appliance described in Patent Document 1. In FIG. As shown in FIG. 6, the human body detection means 6, the control circuit 11, and the display element 4 are included.
Japanese Patent Laid-Open No. 7-217909

  However, in the conventional configuration, the human body is detected by the ultrasonic sensors 7 and 8 because the human body is detected and the luminance is changed according to the presence or absence of a person or the luminance is adjusted according to the surrounding brightness. The light detection means 9 for detecting the means and brightness is necessary, and there is a problem that the manufacturing cost increases.

  The present invention solves the above-mentioned conventional problems, and does not add dedicated parts, minimizing problems in use, and displaying a cooking appliance that achieves a long life of the display element and power saving. The purpose is to provide a device.

  In order to solve the conventional problems, a display device for a cooking appliance according to the present invention includes a control unit that drives a battery as a power source, an input unit that inputs an operation signal to the control unit, and an output signal from the control unit. And a display means for displaying the combustion state, the display means having a predetermined brightness when the first timer means that starts when the ignition signal is output from the control section is up. It is set as the structure reduced.

  As a result, after the ignition operation, after the time that the user is supposed to confirm the display of the combustion state, that is, the thermal power display, has passed, the brightness of the display element is lowered to extend the life of the display element and save power. Battery life can be extended.

  The display device of the cooking appliance of the present invention can reduce the luminance without adding a dedicated component, and can extend the life of the display element and save power.

  1st invention displays the combustion state, the control part which drives a battery as a power supply, the input means which inputs the operation signal to the said control part, the load part which adjusts a combustion state with the output signal from the said control part, Display means, and the display means is configured to decrease to a predetermined luminance when timer means that starts when an ignition signal is output from the control unit expires. After the time when it is assumed that the user confirms the display of the combustion state, i.e., the thermal power display, the brightness of the display element is lowered to extend the battery life by extending the life of the display element or saving power. I can plan.

  The second invention is characterized in that the display means gradually decreases the luminance at a predetermined cycle until the first timer means which starts when the ignition signal is output from the control unit expires. After the ignition operation, when the brightness is suddenly lowered by gradually reducing the brightness of the display element while the user is expected to confirm the display of the combustion state, that is, the thermal power display. In comparison, the user can be relieved of the feeling that the display element has become dark, and the life of the display element can be extended and the battery life can be extended by saving power while improving the feeling of use.

  According to a third aspect of the present invention, there is provided a thermal power adjustment instruction input means. When the thermal power adjustment instruction signal is input, the brightness of the display means is returned to the initial state at the time of ignition, and the second timer means activated by the thermal power adjustment instruction signal is timed. The state is maintained until the brightness is increased, and then the brightness is lowered to a predetermined brightness. The brightness of the display device is set to the initial ignition state for a predetermined time when the instruction for adjusting the thermal power is given from the brightness reduction state. By returning to the brightness, it is easy to check the usage state, and after a predetermined time has elapsed, the luminance is lowered again, thereby extending the life of the display element and saving power.

  According to a fourth aspect of the present invention, there is provided a thermal power adjustment instruction input means, and when the thermal power adjustment instruction signal is inputted, the brightness of the display means is returned to the initial state at the time of ignition, and the second timer means activated by the thermal power adjustment instruction signal is timed. It is characterized in that the state is maintained until the brightness is increased, and then gradually decreases to a predetermined brightness. The brightness of the display device is ignited only for a predetermined time when a thermal power adjustment instruction is given from the reduced brightness state. By returning to the initial brightness, it is easy to check the usage state, and after a predetermined time has passed, the brightness is gradually reduced, compared to the case where the brightness is suddenly reduced compared to the user. Thus, it is possible to relieve the feeling that the display element has become dark, and it is possible to extend the battery life by extending the life of the display element and reducing the power consumption while improving the feeling of use.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiment.

(Embodiment 1)
FIG. 1 is a circuit configuration diagram of a display device for a cooking appliance according to the first embodiment of the present invention, and FIG. 5 is an external view of the cooking appliance.

  In the figure, a battery 1 supplies power to a control unit composed of a microcomputer 2 that controls combustion. The switch 16 is a switch for instructing ignition and extinguishing of the combustion part, and the switches 17 and 18 are switches for adjusting the thermal power, and constitute a thermal power adjustment instruction input means. Each switch is connected to the microcomputer 2 and input to the microcomputer 2. The electromagnetic valve 3 and the igniter 4 are load portions controlled by the output from the microcomputer 2 and perform gas valve opening, flow rate adjustment, and ignition during ignition and combustion.

  The transistors 11 to 15 are driven by the microcomputer 2 to control the lighting and extinguishing of the LEDs 6 to 10 that constitute the display device 5 that displays a thermal power.

  About the display apparatus of the cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  FIG. 2 is a flowchart showing the operation of the cooking appliance.

  First, in step S1, it is checked whether the fire extinguishing switch 16 is pressed, and the check is repeated until the switch is pressed. In step S2, the electromagnetic valve 3 is opened in step S2, and the igniter 4 is operated to discharge and ignite. . Thereafter, in step S3, the thermal power display means 5 is turned on to display the thermal power. In this case, the LEDs 6 to 10 serving as the thermal power display means are lit with high brightness by being driven at a duty of 100% as indicated by 18 in FIG. In step S4, it is determined whether or not the first timer means activated by the ignition signal has timed up (for example, whether 1 minute has elapsed). If it has elapsed, the LEDs 6 to 10 are set to duty as indicated by 19 in FIG. It is lit with the brightness lowered by driving at 50%.

  Thus, until the time of the first timer means activated by the ignition signal expires, the thermal power display means 5 is lit with a duty of 100% to improve the operation visibility, and after the time is up, it is lit with a duty of 50%. Thus, the life of the display element and the power saving are achieved.

  In the present embodiment, the description has been given of switching from 100% to 50% as the luminance changing means. However, switching other than the above-described duty ratio may be performed, and the duty ratio is stepped according to the elapsed time from the ignition operation. It is also possible to use a changing means that changes the brightness and gradually decreases the brightness so that the user does not feel dark.

(Embodiment 2)
FIG. 4 is a flowchart showing the operation of the display device of the cooking appliance according to the second embodiment of the present invention.

  The operation and action will be described below with reference to FIG.

  Since the steps up to step S5 are the same as those in the first embodiment, description thereof is omitted. In step S6, it is determined whether or not the thermal power keys 17 and 18 have been pressed. When the thermal keys 17 and 18 are pressed, the thermal power display is displayed with high brightness in step S7 as in the case of ignition.

  Thereafter, in step S8, it is determined whether the second timer means activated by the heating power adjustment instruction signal has timed up (for example, whether 1 minute has elapsed). If it has elapsed, the process returns to step S5 and again at low brightness. Display firepower. The brightness changing means is the same as that in the first embodiment, and a description thereof will be omitted.

  As described above, when the thermal power adjustment instruction signal is input, the brightness of the display device 5 is returned from the power saving mode to the initial brightness of the ignition, thereby improving the operation visibility and simultaneously starting with the thermal power adjustment instruction signal. After the timer means has timed out, the display element is changed to the power saving mode again, thereby extending the life of the display element and saving power.

  Also, after the second timer means has timed out, the duty ratio is changed stepwise in accordance with the elapsed time, and the luminance is gradually lowered so that the user does not feel dark. May be used.

The circuit block diagram of the display apparatus of the cooking appliance in Embodiment 1 of this invention Flow chart of the display device of the cooking appliance The figure which shows the drive waveform of the display element of the cooking appliance The flowchart of the display apparatus of the cooking appliance in Embodiment 2 of this invention External view of cooking appliance in embodiment of the present invention Circuit block diagram of conventional cooking equipment

Explanation of symbols

1 Dry cell (battery power)
2 Microcomputer (control unit)
3 Solenoid valve (load section)
4 igniters (load section)
5 Display means 16-point fire extinguishing switch (input means)

Claims (4)

A control unit that drives a battery as a power source; an input unit that inputs an operation signal to the control unit; a load unit that adjusts a combustion state using an output signal from the control unit; and a display unit that displays the combustion state. The display device for a cooking appliance, wherein the display means is configured to decrease to a predetermined luminance when a first timer means that starts when an ignition signal is output from the control unit times out. 2. The display device for a cooking appliance according to claim 1, wherein the display means gradually decreases the luminance at a predetermined cycle until the first timer means which starts when the ignition signal is output from the control unit expires. A thermal power adjustment instruction input means is provided, and when the thermal power adjustment instruction signal is input, the brightness of the display means is returned to the initial state at the time of ignition, and the state is maintained until the second timer means activated by the thermal power adjustment instruction signal times out. The display device for a cooking appliance according to claim 1 or 2, wherein the display device is maintained and then lowered to a predetermined luminance. A thermal power adjustment instruction input means is provided, and when the thermal power adjustment instruction signal is input, the brightness of the display means is returned to the initial state at the time of ignition, and the state is maintained until the second timer means activated by the thermal power adjustment instruction signal times out. The display device for a cooking appliance according to claim 1 or 2, wherein the display device is maintained and then gradually lowered to a predetermined luminance.

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