JP6937645B2 - Cooking equipment and its control method - Google Patents

Description

The present invention relates to a cooking apparatus and a method for controlling the same. More specifically, the present invention relates to a cooking device having a liquid crystal display device and a control method thereof.

Conventionally, a liquid crystal display device described in Japanese Patent Application Laid-Open No. 6-27440 (Patent Document 1) and a liquid crystal display device described in JP-A-6-265848 (Patent Document 2) are known.

The liquid crystal display device described in Patent Document 1 includes a liquid crystal display unit, a backlight unit, a backlight dimming control unit, and an illuminance sensor unit. The liquid crystal display unit displays an image such as input characters by the light from the backlight unit. The backlight dimming control unit controls the backlight unit so as to change the brightness of the light emitted from the backlight unit based on the ambient illuminance detected by the illuminance sensor unit. More specifically, the backlight dimming control unit controls to increase the brightness of the light from the backlight unit when the ambient illuminance is high (when the surroundings are bright), and when the ambient illuminance is low. Control is performed so as to reduce the brightness of the light from the backlight portion (when the surroundings are dark).

The liquid crystal display device described in Patent Document 2 has a backlight and an illuminance sensor. In the liquid crystal display device described in Patent Document 2, the backlight increases the brightness when the ambient illuminance detected by the illuminance sensor is low (when the surroundings are dark), and the ambient illuminance detected by the illuminance sensor. It is controlled to reduce the brightness when the value is high (when the surroundings are bright).

Japanese Unexamined Patent Publication No. 6-27440 Japanese Unexamined Patent Publication No. 6-265848

In the liquid crystal display device described in Patent Document 1, when the ambient illuminance is high, the brightness of the light from the backlight portion increases, so that the power consumption increases. In the liquid crystal display device described in Patent Document 2, when the ambient illuminance is low, the brightness of the light from the backlight increases, so that the power consumption increases. As described above, in the influence display device described in Patent Document 1 and the liquid crystal display device described in Patent Document 2, the power consumption in the backlight is high in either the situation where the ambient illuminance is high or the ambient illuminance is low. There is a problem that it will increase. The increase in power consumption in the backlight becomes a particular problem when the liquid crystal display device is driven by a battery. This is because when the liquid crystal display device is driven by a battery, the increase in power consumption leads to an increase in the frequency of battery replacement.

The present invention has been made in view of the above-mentioned problems of the prior art. More specifically, the present invention can reduce the power consumption of the backlight while ensuring the visibility of the liquid crystal display device in both the high ambient illuminance situation and the low ambient illuminance situation. It provides a cooking device.

In one aspect of the present invention, the cooking apparatus includes a battery, a backlight driven by power supplied from the battery, a liquid crystal display device, an illuminance sensor for detecting ambient illuminance, and a control unit. The liquid crystal display device is configured to display an image by at least one of the transmitted light from the backlight transmitted through the liquid crystal display device and the reflected light reflected inside the liquid crystal display device. When the illuminance detected by the illuminance sensor is equal to or less than the first value, the control unit controls the backlight so that the lower the illuminance detected by the illuminance sensor, the lower the brightness of the backlight, and the illuminance sensor controls the backlight. When the detected illuminance is greater than or equal to the second value than the first value, the backlight is controlled so that the higher the illuminance detected by the illuminance sensor, the lower the brightness of the backlight. NS.

In the above-mentioned cooking apparatus, when the illuminance detected by the illuminance sensor is equal to or less than the first value, the control unit sets the backlight so that the lower the illuminance detected by the illuminance sensor, the lower the brightness of the backlight. When the illuminance detected by the illuminance sensor is greater than or equal to the second value, which is larger than the first value, the backlight is controlled so that the higher the illuminance detected by the illuminance sensor, the lower the brightness of the backlight. Because of the control, the power consumption of the backlight is reduced in both the situation where the ambient illuminance is high and the situation where the ambient illuminance is low.

In the liquid crystal display device of the above-mentioned cooking device, an image can be displayed by the reflected light reflected inside the liquid crystal display device. Therefore, in the liquid crystal display device of the above-mentioned cooking device, when the ambient illuminance is high, the visibility of the liquid crystal display device can be ensured even if the brightness of the light from the backlight is low. Further, in the liquid crystal display device of the above-mentioned cooking device, the image can be displayed by the transmitted light from the backlight. When the ambient illuminance is low, the brightness of the light from the backlight becomes relatively high in relation to the ambient illuminance. Therefore, even if the brightness of the light from the backlight is low, the visibility of the liquid crystal display device is ensured. be able to. Therefore, in the above-mentioned cooking apparatus, the control unit controls the backlight as described above, so that the visibility of the liquid crystal display device can be seen in both the situation where the ambient illuminance is high and the situation where the ambient illuminance is low. It is possible to reduce the power consumption of the backlight while ensuring the above.

In the above-mentioned cooking apparatus, the liquid crystal display device may have a memory element and a pixel electrode to which a voltage is applied based on a storage state in the memory element.

Usually, a unit pixel of a liquid crystal display device has a pixel transistor, a capacitor, and a pixel electrode. In such a liquid crystal display device, an image is displayed by applying a voltage to a pixel electrode with an electric charge charged in a capacitor by turning on / off a pixel transistor. The electric charge held in the capacitor fluctuates with time due to the influence of the leakage current from the pixel transistor. Therefore, in a normal liquid crystal display device, even if there is no change in the displayed image, a refresh operation for recharging the capacitor at regular time intervals is required. During this refresh operation, a current flows through the peripheral circuits, which causes power consumption.

However, when the liquid crystal display device of the above-mentioned cooking apparatus has a memory element and a pixel electrode to which a voltage is applied based on a storage state in the memory element, the above-mentioned refresh operation becomes unnecessary. Therefore, in this case, the power consumption of the liquid crystal display device can be further reduced.

The above-mentioned cooking device may further include a lighting device that irradiates light toward the liquid crystal display device. The control unit may control the illuminating device so as to turn on the illuminating device according to the illuminance detected by the illuminance sensor.

In this case, since the liquid crystal display device can display an image by reflecting the light emitted from the lighting device inside the liquid crystal display device, the brightness of the light from the backlight is controlled to be low. Even if it is done, the visibility of the liquid crystal display device can be ensured. Therefore, in this case, the power consumption of the backlight can be further reduced.

The above-mentioned cooking apparatus may further include a main body and an operation unit that can be opened and closed from the main body. The liquid crystal display device and the illuminance sensor may be attached to the operation unit so as to be exposed from the main body when the operation unit is open and housed in the main body when the operation unit is closed. The liquid crystal display device may have an upper side that is closer to the main body when the operation unit is open and a lower side that is far from the main body when the operation unit is open. The illuminance sensor may be arranged on the lower side.

The upper side of the liquid crystal display device is the shadow of the main body. Therefore, if the illuminance sensor is arranged on the upper side of the liquid crystal display device, it becomes difficult for the illuminance sensor to correctly detect the illuminance around the liquid crystal display device. When the illuminance sensor is arranged on the lower side of the liquid crystal display device, the illuminance sensor can be arranged avoiding a position that is in the shadow of the main body, so that the illuminance around the liquid crystal display device can be detected more accurately. can.

The above-mentioned cooking apparatus may further include a voltage measuring unit that detects the voltage of the battery. The control unit may control the backlight so as to reduce the brightness when the voltage measuring unit detects a voltage drop in the battery. In this case, the battery life can be extended by further reducing the power consumption of the backlight.

The control method according to one aspect of the present invention is a control method for a cooking apparatus. The cooking device is a control method for a cooking device including a battery, a backlight driven by the battery, and a liquid crystal display device. The liquid crystal display device is configured to display an image by at least one of the transmitted light from the backlight transmitted through the liquid crystal display device and the reflected light reflected inside the liquid crystal display device. The control method according to one aspect of the present invention includes a first step of detecting the ambient illuminance and a second step of controlling the brightness of the backlight based on the illuminance detected in the first step. In the second step, when the illuminance detected in the first step is equal to or less than the first value, the backlight is controlled so that the lower the illuminance detected in the first step, the lower the brightness of the backlight. When the illuminance detected in the first step is greater than or equal to the second value larger than the first value, the brightness of the backlight is controlled to decrease as the illuminance detected in the first step increases.

According to the control method according to one aspect of the present invention, it is possible to reduce the power consumption of the backlight while ensuring the visibility of the liquid crystal display device in both the situation where the ambient illuminance is high and the ambient illuminance is low. can.

According to the cooking apparatus and its control method according to one aspect of the present invention, the power consumption of the backlight is maintained while ensuring the visibility of the liquid crystal display device in both the situation where the ambient illuminance is high and the ambient illuminance is low. Can be reduced.

It is a side view of the cooking apparatus which concerns on embodiment. It is an enlarged view in the region II of FIG. It is sectional drawing of the liquid crystal display device 4 in the cooking apparatus which concerns on embodiment. It is a schematic diagram which shows the structure of the unit pixel of the liquid crystal display device 4 in the cooking apparatus which concerns on embodiment. It is a functional block diagram in the cooking apparatus which concerns on embodiment. It is a schematic graph which shows the relationship between the ambient illuminance and the brightness of the backlight 5 in the cooking apparatus which concerns on embodiment. It is a flowchart which shows the control method of the cooking apparatus which concerns on embodiment.

Details of the embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts shall be designated by the same reference numerals, and duplicate description will not be repeated.

Hereinafter, the configuration of the cooking apparatus according to the embodiment will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, the cooking apparatus according to the embodiment includes a main body unit 1, a range hood 2, an operation unit 3, a liquid crystal display device 4, a backlight 5, an illuminance sensor 6, and a lighting device 7. And have.

The main body 1 has a front side surface 1a and an upper surface 1b. The front side surface 1a is a side surface of the main body 1 facing the user of the cooking apparatus according to the embodiment. The upper surface 1b is the surface of the main body 1 facing the ceiling side. The main body 1 has a cooking cooker 11. The number of the heating cookers 11 may be plural. The heating cooker 11 is arranged on the upper surface 1b. The cooking cooker 11 is, for example, a gas stove. However, the cooking cooker 11 is not limited to this. The heating cooker 11 may be, for example, an electromagnetic heating cooker (IH cooking heater), a halogen heater, or the like.

The range hood 2 is arranged above the main body 1 (above the upper surface 1b). The microwave oven sucks steam, oil smoke, etc. from the pan and frying pan heated by the cooking cooker 11 and discharges them to the outside of the room.

The operation unit 3 is attached to the main body unit 1. More specifically, the operation unit 3 is attached to the front side surface 1a of the main body unit 1. As shown in FIG. 2, the operation unit 3 is attached to the main body unit 1 so as to be openable and closable. An input unit 31, a liquid crystal display device 4, and an illuminance sensor 6 are attached to the operation unit 3. The input unit 31 is composed of, for example, a button, a switch, or the like corresponding to an increase or decrease in the heating power of the cooking cooker 11 or an operation start or operation end.

When the operation unit 3 is open, the input unit 31, the liquid crystal display device 4, and the illuminance sensor 6 are exposed from the main body unit 1. When the operation unit is closed, the input unit 31, the liquid crystal display device 4, and the illuminance sensor 6 are housed inside the main body 1. In FIG. 2, the operation unit 3 is a so-called kangaroo pocket type, but the operation unit 3 may be a drawer type.

The liquid crystal display device 4 is a semi-transmissive liquid crystal display device. That is, the liquid crystal display device 4 receives an image from the display surface of the liquid crystal display device 4 and is reflected by the reflected light inside the liquid crystal display device 4 and the transmitted light from the backlight 5 transmitted through the liquid crystal display device 4. Is configured to display.

As shown in FIG. 3, the liquid crystal display device 4 has a transparent substrate 41, a liquid crystal layer 42, a counter electrode 43, a color filter 44, a first polarizing plate 45a, and a second polarizing plate 45b. There is. As shown in FIG. 4, the liquid crystal display device 4 further includes a data bus line 46a, a gate bus line 46b, a memory element 47, and a voltage supply circuit 48.

The transparent substrate 41 has a first surface 41a and a second surface 41b. The second surface 41b is the opposite surface of the first surface 41a. The transparent substrate 41 is made of a material that transmits light. The transparent substrate 41 is, for example, a glass substrate. The transparent substrate 41 is provided with a first reflective film 41c and a second reflective film 41d. The first reflective film 41c and the second reflective film 41d are arranged on the first surface 41a. The first reflective film 41c and the second reflective film 41d are arranged apart from each other. The first reflective film 41c and the second reflective film 41d are made of a material that reflects light, such as aluminum.

The liquid crystal layer 42 is arranged on the transparent substrate 41. The liquid crystal layer 42 is sandwiched between the first reflective film 41c, the second reflective film 41d, and the counter electrode 43. The counter electrode 43 is made of a material that transmits light and is conductive. The counter electrode 43 is made of, for example, ITO (indium tin oxide) or the like. The counter electrode 43 is held at a constant potential, for example.

Although not shown in FIG. 3, the data bus line 46a and the gate bus line 46b are arranged on the first surface 41a so as to pass between the first reflective film 41c and the second reflective film 41d. .. The data bus line 46a and the gate bus line 46b are made of a material that transmits light and is conductive. The data bus line 46a and the gate bus line 46b are formed of, for example, ITO or the like. Although not shown, the data bus line 46a is connected to the data driver circuit and the gate bus line 46b is connected to the gate driver circuit.

The color filter 44 is arranged on the counter electrode 43. The color filter is configured to transmit only light of a specific wavelength. More specifically, the color filter 44 is configured to transmit light of a different color for each pixel. The first polarizing plate 45a and the second polarizing plate 45b are arranged so as to sandwich the transparent substrate 41, the liquid crystal layer 42, the counter electrode 43, and the color filter 44. The first polarizing plate 45a and the second polarizing plate 45b are arranged so that the transmission axis directions are orthogonal to each other.

The memory element 47 is connected to the data bus line 46a and the gate bus line 46b. The selection of the memory element 47 is performed by activating the data bus line 46a. The memory element 47 stores the signal state of the gate bus line 46b when it is activated. The signal state of the gate bus line 46b corresponds to the gradation of the pixels. The memory element 47 is, for example, an SRAM (Static Random Access Memory) composed of a plurality of transistors.

The voltage supply circuit 48 is connected to the memory element 47. The voltage supply circuit 48 generates a voltage according to the storage state of the memory element 47. The voltage generated by the voltage supply circuit 48 is supplied to the first reflective film 41c and the second reflective film 41d. When the potential difference between the first reflective film 41c (second reflective film 41d) and the counter electrode 43 changes, the orientation of the liquid crystal molecules contained in the liquid crystal layer 42 changes, so that light is transmitted in the liquid crystal layer 42. The rate changes. That is, the first reflective film 41c and the second reflective film 41d constitute the pixel electrodes of the liquid crystal display device 4.

The backlight 5 is preferably built in the liquid crystal display device 4. The backlight 5 is composed of an LED (Light Emitting Diode), a cold cathode tube, and the like. The light from the backlight 5 passes through the first polarizing plate 45a and the transparent substrate 41 and reaches the liquid crystal layer 42. The light from the backlight 5 passes through a portion of the transparent substrate 41 where the first reflective film 41c and the second reflective film 41d are not provided. The light passes through the liquid crystal layer 42. The light further passes through the counter electrode 43, the color filter 44, and the second polarizing plate 45b. In this way, the liquid crystal display device 4 can display an image by the transmitted light from the backlight 5. The path of the transmitted light from the backlight 5 is indicated by a solid arrow in FIG.

Light incident from the display surface of the liquid crystal display device 4 (the surface on the side of the second polarizing plate 45b) passes through the second polarizing plate 45b, the color filter 44, and the counter electrode 43, and reaches the liquid crystal layer 42. The light passes through the liquid crystal layer 42 and is reflected by the first reflective film 41c and the second reflective film 41d. This reflected light passes through the liquid crystal layer 42, the counter electrode 43, the color filter 44, and the second polarizing plate 45b again. In this way, the liquid crystal display device 4 can display an image by the reflected light that is incident from the display surface of the liquid crystal display device 4 and is reflected inside the liquid crystal display device 4. The path of the reflected light reflected inside the liquid crystal display device 4 is indicated by a dotted arrow in FIG.

As shown in FIG. 2, the liquid crystal display device 4 has an upper side 4a and a lower side 4b. The upper side 4a is on the side closer to the main body 1 when the operation unit 3 is open. The lower side 4b is the side opposite to the upper side 4a. That is, the lower side 4b is on the side far from the main body 1 when the operation unit 3 is open.

The illuminance sensor 6 detects the ambient illuminance and outputs a signal corresponding to the ambient illuminance. The illuminance sensor 6 is composed of, for example, a photodiode and a current amplifier circuit. The illuminance sensor 6 is preferably attached to the lower side 4b side of the liquid crystal display device 4 in the operation unit 3.

The lighting device 7 is attached to, for example, a range hood 2. The lighting device 7 is attached so as to irradiate light toward the liquid crystal display device 4 and the illuminance sensor 6.

As shown in FIG. 5, the cooking apparatus according to the embodiment further includes a battery 8a, a voltage measuring unit 8b, and a control unit 9. The battery 8a supplies power to the backlight 5. The battery 8a may supply power not only to the backlight 5 but also to the liquid crystal display device 4 and the control unit 9. The voltage measuring unit 8b is configured to measure the voltage of the battery 8a.

The control unit 9 is composed of, for example, a microcontroller. The control unit 9 controls the brightness of the backlight 5 based on the signal from the illuminance sensor 6. More specifically, as shown in FIG. 6, when the ambient illuminance detected by the illuminance sensor 6 is equal to or less than the first value, the control unit 9 increases the backlight 5 as the ambient illuminance becomes lower. The backlight 5 is controlled so that the brightness becomes low. When the ambient illuminance detected by the illuminance sensor 6 is equal to or higher than the second value, the control unit 9 controls the backlight 5 so that the higher the ambient illuminance, the lower the brightness of the backlight.

The second value is larger than the first value. When the ambient illuminance detected by the illuminance sensor 6 is larger than the first value and smaller than the second value, the control unit 9 controls the backlight 5 so as to keep the brightness of the backlight 5 constant. May be controlled.

The control unit 9 may control the lighting device 7 based on the signal from the illuminance sensor 6. More specifically, even if the control unit 9 controls the lighting device 7 so as to start lighting the lighting device 7 when the ambient illuminance detected by the illuminance sensor 6 is equal to or higher than the third value. good. The third value is preferably larger than the first value and smaller than the second value. The third value is preferably an illuminance value at which the illuminance sensor 6 detects an illuminance equal to or higher than the second value when the lighting device 7 is turned on.

The control unit 9 may control the brightness of the backlight 5 based on the signal from the voltage measurement unit 8b. More specifically, the control unit 9 controls the backlight 5 so as to reduce the brightness of the backlight 5 when the voltage measuring unit 8b detects that the voltage of the battery 8a is equal to or lower than a predetermined value. You may. The control unit 9 turns on the backlight 5 when the input unit 31 is operated, and turns off the backlight 5 after a predetermined time has elapsed after the operation of the input unit 31 is completed. You may control it.

The control method of the cooking apparatus according to the embodiment will be described below with reference to FIG. 7.
As shown in FIG. 7, the method for controlling the cooking apparatus according to the embodiment includes a first step S1 and a second step S2.

In the first step S1, the ambient illuminance is detected. The ambient illuminance is detected by the illuminance sensor 6. In the second step S2, the brightness of the backlight 5 is controlled based on the illuminance detected in the first step S1. The brightness of the backlight 5 is controlled by the control unit 9. More specifically, when the illuminance detected in the first step S1 is equal to or less than the first value, the backlight 5 is controlled so that the lower the ambient illuminance, the lower the brightness. Further, when the ambient illuminance detected in the first step S1 is equal to or greater than the second value larger than the first value, the backlight 5 is controlled so that the brightness decreases as the ambient illuminance increases. ..

The effect of the cooking apparatus according to the embodiment will be described below.
When the ambient illuminance detected by the illuminance sensor 6 is equal to or less than the first value, the control unit 9 controls the backlight 5 so that the lower the illuminance, the lower the brightness, and the control unit 9 detects the illuminance sensor 6. When the ambient illuminance is greater than or equal to the second value, which is larger than the first value, the backlight 5 is controlled so that the higher the illuminance, the lower the brightness. Therefore, in the above-mentioned cooking apparatus, the power consumption of the backlight 5 is reduced in both the situation where the ambient illuminance is high and the situation where the ambient illuminance is low.

In the liquid crystal display device 4, an image can be displayed by the reflected light reflected inside the liquid crystal display device 4. Therefore, in the liquid crystal display device 4, when the ambient illuminance is high, the visibility of the liquid crystal display device 4 can be ensured even if the brightness of the light from the backlight 5 is low. The liquid crystal display device 4 can also display an image by the transmitted light from the backlight 5. In the liquid crystal display device 4, when the ambient illuminance is low, the brightness of the light from the backlight 5 is relatively high in relation to the ambient illuminance, so that even if the brightness of the light from the backlight 5 is low, The visibility of the liquid crystal display device 4 can be ensured.

Therefore, in the cooking apparatus according to the embodiment, the control unit 9 controls the backlight 5 as described above, so that the liquid crystal display can be displayed in both the situation where the ambient illuminance is high and the situation where the ambient illuminance is low. The power consumption of the backlight 5 can be reduced while ensuring the visibility of the device 4.

Usually, a unit pixel of a liquid crystal display device has a pixel transistor, a capacitor, and a pixel electrode. In such a liquid crystal display device, an image is displayed by applying a voltage to a pixel electrode with an electric charge charged in a capacitor by turning on / off a pixel transistor. The electric charge held in the capacitor fluctuates with time due to the influence of the leakage current from the pixel transistor. Therefore, in a normal liquid crystal display device, even if there is no change in the displayed image, a refresh operation for recharging the capacitor at regular time intervals is required. During this refresh operation, a current flows through the peripheral circuits, which causes power consumption.

However, when the liquid crystal display device 4 has a memory element 47 and pixel electrodes (first reflective film 41c and second reflective film 41d) to which a voltage is applied based on the storage state in the memory element, the above Such a refresh operation becomes unnecessary. Therefore, in this case, the power consumption of the liquid crystal display device 4 can be further reduced.

The heating / cooking device according to the embodiment has a lighting device 7, and the control unit 9 controls the lighting device 7 so as to light the lighting device 7 according to the ambient illuminance detected by the illuminance sensor 6. In this case, since the image can be displayed by reflecting the light emitted from the lighting device 7 inside the liquid crystal display device 4, even if the brightness of the light from the backlight 5 is controlled to be low. , The visibility of the liquid crystal display device 4 can be ensured. Therefore, in this case, the power consumption of the backlight 5 can be further reduced.

The upper side 4a side of the liquid crystal display device 4 is a shadow of the main body 1. Therefore, if the illuminance sensor 6 is arranged on the upper side 4a side of the liquid crystal display device 4 in the operation unit 3, it becomes difficult for the illuminance sensor 6 to correctly detect the illuminance around the liquid crystal display device 4. On the other hand, when the illuminance sensor 6 is arranged on the lower side 4b side of the liquid crystal display device 4 in the operation unit 3, the illuminance sensor 6 can be arranged while avoiding a position that is a shadow of the main body portion, so that the liquid crystal display device It is possible to detect the illuminance in the vicinity of 4 more accurately.

When the voltage measuring unit 8b detects a voltage drop in the battery 8a and the control unit 9 controls the backlight 5 so as to reduce the brightness of the backlight 5, the power consumption in the backlight 5 is further reduced. Battery life can be extended.

The embodiments disclosed this time should be considered as exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims, and is intended to include the meaning equivalent to the scope of claims and all modifications within the scope.

The above embodiment is particularly advantageously applied to a cooking apparatus having a liquid crystal display device and a control method thereof.

1 Main body, 1a Front side, 1b Top, 2 Range hood, 3 Operation, 4 Liquid crystal display, 4a Upper side, 4b Lower side, 41a 1st surface, 41b 2nd surface, 41c 1st reflective film, 41d 2nd reflection Film, 42 LCD layer, 43 counter electrode, 44 color filter, 45a 1st polarizing plate, 45b 2nd polarizing plate, 46a data bus line, 46b gate bus line, 47 memory element, 48 voltage supply circuit, 5 backlight, 6 Illumination sensor, 7 lighting device, 8a battery, 8b voltage measuring unit, 9 control unit, 11 heating cooker, 31 input unit, 41 transparent substrate, S1 first step, S2 second step.

Claims (6)

Batteries and
The backlight driven by the power supply from the battery and
Liquid crystal display and
An illuminance sensor that detects the ambient illuminance and
Equipped with a control unit
The liquid crystal display device is configured to display an image by at least one of the transmitted light from the backlight transmitted through the liquid crystal display device and the reflected light reflected inside the liquid crystal display device.
When the illuminance detected by the illuminance sensor is equal to or less than the first value, the control unit controls the backlight so that the lower the illuminance detected by the illuminance sensor, the lower the brightness of the backlight. At the same time, when the illuminance detected by the illuminance sensor is greater than or equal to the second value larger than the first value, the higher the illuminance detected by the illuminance sensor, the lower the brightness of the backlight. A cooker configured to control the backlight. The heating cooking device according to claim 1, wherein the liquid crystal display device has a memory element and a pixel electrode to which a voltage is applied based on a storage state in the memory element. A lighting device that irradiates light toward the liquid crystal display device is further provided.
The cooking device according to claim 1 or 2, wherein the control unit is configured to control the lighting device so as to light the lighting device according to the illuminance detected by the illuminance sensor. With the main body
Further provided with an operation unit that can be opened and closed on the main body.
The liquid crystal display device and the illuminance sensor are attached to the operation unit so as to be exposed from the main body when the operation unit is open and housed in the main body when the operation unit is closed. ,
The liquid crystal display device has an upper side that is closer to the main body when the operation unit is open, and a lower side that is far from the main body when the operation unit is open.
The cooking apparatus according to any one of claims 1 to 3, wherein the illuminance sensor is arranged on the lower side of the operation unit. Further provided with a voltage measuring unit for detecting the voltage of the battery,
Any of claims 1 to 4, wherein the control unit is configured to control the backlight so as to reduce the brightness of the backlight when the voltage measuring unit detects a voltage drop in the battery. The heating cooking apparatus according to item 1. A method for controlling a cooking device including a battery, a backlight driven by the battery, and a liquid crystal display device.
The liquid crystal display device is configured to display an image by at least one of the transmitted light from the backlight transmitted through the liquid crystal display device and the reflected light reflected inside the liquid crystal display device.
The first process to detect the ambient illuminance and
A second step of controlling the brightness of the backlight based on the illuminance detected in the first step is provided.
In the second step, when the illuminance detected in the first step is equal to or less than the first value, the lower the illuminance detected in the first step, the lower the brightness of the backlight. When the illuminance detected in the first step is greater than or equal to the second value larger than the first value, the higher the illuminance detected in the first step, the higher the backlight. A control method in which the brightness of the is controlled to be low.

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