JPH0720483Y2 - Microwave oven with heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an improvement of a microwave oven with a heater that displays the energized state of the heater.

<Prior Art> In this type of microwave oven with a heater, a display segment that imitates the word indicating the heater or the shape of the heater is provided, blinks in red while the heater is energized, and turns off when the energization ends. Is generally practiced.

In the display method as described above, the display unit is simply turned on, so that the user's attention is weak, and the display disappears even when the heater is still hot after the power supply is stopped. Not being able to convey sufficient information to the user, this has been a factor that leaves some anxiety about safety and reduces usability.

Therefore, in order to solve such problems, various proposals have been made conventionally. For example, in Japanese Patent Laid-Open No. 59-56623 (which is referred to as Prior Art 1), while the temperature determination means determines that the temperature is high after the power supply to the heating means is stopped,
A display device in which the blinking display control means causes the LED to blink is disclosed in Japanese Patent Application Laid-Open No. 59-56624.
And) describes a display device in which an LED blinks for a certain period of time after the power supply to the heating means is stopped.

<Problems to be Solved by the Invention> However, the display device of the prior art 1 merely blinks the LED while it is determined that the temperature is high after the energization is stopped. However, since the LED is simply made to blink for a certain period of time after the energization is stopped, it is not enough to call attention to the user.

The present invention has been made in view of such problems, and an object thereof is to provide a microwave oven with a heater capable of displaying information on the heater more than ever.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the heater-equipped microwave oven of the present invention is provided with a solid-line display segment and a broken-line display segment simulating the shape of the heater in the display section. While the heater is energized, the solid line display segment is turned on, the broken line display segment is blinked at a relatively short cycle, and the solid line display segment is turned on for a certain period of time after the heater is turned on. A control means for blinking the broken line display segment at a period longer than the period is provided.

<Operation> While the heater is energized, the solid line display segment is turned on and the broken line display segment is blinked at a relatively short cycle. For a certain period of time after the heater power is turned on, the solid line display segment is turned on and
The broken line display segment is made to blink at a period longer than the period during which the heater is energized. In other words, the solid line display segment simulating the shape of the heater is always turned on, and the dashed line display segment arranged along the solid line heater is turned on with a relatively short cycle during heater energization. After that, the heater is made to blink at a cycle longer than that during energization.

Therefore, the user can recognize the heat generation state of the heater by lighting the solid line-shaped display segment imitating the shape of the heater, and further confirm the blinking state of the broken line-shaped display segment to check the energization of the heater. The state can be recognized. That is, the display segments are arranged in the shape of a heater, and the combination of lighting and blinking of the display segments can provide a sufficient alerting function to the user.

<Example> Next, one example shown in the drawings will be described.

FIG. 1 is a schematic block diagram of a control circuit. 1 is input means having various operation keys, 2 is control means, 3 is storage means for storing control programs and various kinds of information, and 4 is heater drive circuit. Reference numeral 5 is a heater, 6 is a magnetron drive circuit, 7 is a magnetron, and 8 is a display unit. Control means 2
Is for performing various controls of the entire microwave oven, the main part of which is configured by a microcomputer, and the heater drive circuit 4, the magnetron drive circuit 6 and the The display unit 8 and the like are operated. The input means 1 and the display portion 8 are arranged on the operation portion on the front surface of the microwave oven main body 11 as shown in FIG.

FIG. 3 shows the details of the display unit 8, which is composed of the fluorescent display elements G _{1 to} G ₆ arranged in a horizontal row. Display device G ₁ ~G _5, an element a ₁ ~a ₅ displays numbers and letters by the combination of a plurality of segments, the particular condition or meaning in a certain shape or character, element b ₁ displays a function or the like - It has a b _5, also the display device G ₆ is provided with a plurality of graphical indicator c ₁ to c ₃ to display a specific function in combination of the respective plurality of segments. The graphic indicator c ₁ is for displaying the heater state according to the present invention, and is composed of a solid line display segment c ₁₁ and a broken line display segment c ₁₂ which respectively imitate the shape of the heater.

This embodiment has the above-mentioned configuration, and when the heater 5 is energized according to the cooking content set by the input means 1,
The solid line display segment c ₁₁ is turned on, and at the same time, the broken line display segment c ₁₂ is blinked in a relatively short cycle.
When the energization of the heater 5 is finished, the display segment c ₁₁ is continuously turned on and the display segment c ₁₂ is blinked at a relatively long cycle. That is, as shown in FIG. 4, a state in which only the display segment c ₁₁ is lit and a state in which the display segment c ₁₂ is also lit are alternately repeated in a short cycle or a long cycle. Lighting and blinking after the end of energization are set in advance so that the heater 5 is operated while the heater 5 is still hot until the residual heat is dissipated. By blinking the display segment c _{12 in} this manner, the user can notice it more than when it is simply lit, and further, during the residual heat dissipation after the de-energization, it blinks slowly with a longer cycle than during energization. The user can easily know that the heater is still hot although the power has been turned on.

That is, in the microwave oven with a heater of the present invention, both display segments c ₁₁ and c ₁₂ are arranged in a heater shape,
The combination of lighting and blinking of both display segments c ₁₁ and c ₁₂ is configured to be able to exert a sufficient alerting function to the user.

The shape of the display segment may be appropriately selected according to the shape of the heater, and the blinking operation may be performed in various ways such as blinking the entire blinking.

<Effect of the Invention> According to the microwave oven with a heater of the present invention, while the heater is energized, the solid line display segment is turned on, and the broken line display segment is blinked at a relatively short cycle, so that the heater energization is completed. For a certain period of time, the solid line display segment is turned on, and the broken line display segment is blinked at a cycle longer than the above cycle.
The user can recognize the heat generation state of the heater by lighting the solid line-shaped display segment imitating the shape of the heater, and also check the blinking state of the broken line-shaped display segment to confirm the heater energization state. It is recognizable. That is, by arranging both display segments in a heater shape and combining lighting and blinking of both display segments, it is possible to exert a sufficient alerting function to the user. As a result, the user's alertness is improved and the user is informed of the information about the residual heat that is being emitted after the power supply is stopped, so the risk of inadvertently touching the heater with residual heat can be prevented, and the product is highly commercialized. It can be a microwave oven.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a control circuit according to an embodiment of the present invention, FIG. 2 is a front view of the appearance of a microwave oven, FIG. 3 is a view showing the configuration of a display unit, and FIG. It is a figure which shows the lighting state of a display segment. 1 ... input unit, 2 ... control unit 3 ... storage unit, 4 ... heater drive circuit 5 ... heater, 6 ... magnetron driving circuit 7 ... magnetron, 8 ... display unit G ₁ ~G ₆ ... fluorescent display device, c ₁ ... Graphic Indicator, c ₁₁ , c ₁₂ ... Display segment

Claims (1)

[Scope of utility model registration request] 1. A microwave oven having a heater for heating, wherein a display section is provided with a solid line display segment and a broken line display segment simulating the shape of the heater, and the solid line display segment is displayed while the heater is energized. While turning on the light,
The broken line display segment is blinked at a relatively short cycle, and the solid line display segment is turned on for a certain time after the heater energization is finished, and the broken line display segment is blinked at a cycle longer than the cycle. A microwave oven with a heater, characterized in that a control means is provided.