JP6497445B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator.

  Patent Document 1 describes a refrigerator. The refrigerator described in Patent Document 1 includes a camera and a light. In the refrigerator described in Patent Document 1, the light is turned on when the interior is imaged by the camera.

International Publication No. 2014/142119

  When an LED is used as a light used in a refrigerator, for example, white light is created by mixing light of a plurality of colors. For this reason, when the amount of light of a certain color decreases, the overall color of the light changes. For example, a slight amount of ultraviolet light is emitted from an LED that emits blue light. Ultraviolet rays degrade the resin encapsulating the LED chip and reduce the transmittance. When only the amount of blue light is reduced, the whole becomes yellowish light. For this reason, when the vegetables in the vegetable room are photographed by the camera, the color of the vegetable image is different from the actual vegetable color.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide a refrigerator that can reduce the difference between the color of an image to be acquired and the actual color of vegetables in a vegetable room.

The refrigerator which concerns on this invention is 1st LED which irradiates the vegetable room with the light of the 1st wavelength band, 2nd LED which irradiates the vegetable room with the light of the 2nd wavelength band different from the 1st wavelength band, and the image of the vegetable room An image acquisition device for acquiring the image, a memory in which a reference image is stored, a color reference provided in the vegetable room, and a control device. A vegetable container is provided with a lower container and an upper container. The color reference is provided on the lower surface of the upper container. The color reference image acquired by the image acquisition device is stored in the memory as a reference image. The control device controls the first LED and the second LED to reduce the difference between the color of the reference image stored in the memory and the color of the color reference image acquired by the image acquisition device.

The refrigerator according to the present invention includes a first LED, a second LED, and a control device. 1st LED and 2nd LED irradiates light to a vegetable compartment. A lower container and an upper container are provided in the vegetable room, and a color reference is provided on the lower surface of the upper container . The color reference image acquired by the image acquisition device is stored in the memory as a reference image. The control device controls the first LED and the second LED to reduce the difference between the color of the reference image stored in the memory and the color of the color reference image acquired by the image acquisition device. If it is the refrigerator which concerns on this invention, the difference of the color of the image to acquire and the actual color of the vegetable in a vegetable room can be reduced.

It is a figure which shows the cross section of the refrigerator in Embodiment 1 of this invention. It is a figure which shows the electrical connection of the apparatus with which the refrigerator was equipped. It is a flowchart which shows the operation | movement of the refrigerator in Embodiment 1 of this invention. It is a figure which shows the timing chart when a refrigerator performs the operation | movement shown in FIG.

  The present invention will be described with reference to the accompanying drawings. The overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
1 is a diagram showing a cross section of a refrigerator 1 according to Embodiment 1 of the present invention. FIG. 2 is a diagram illustrating electrical connections of devices provided in the refrigerator 1. First, the whole structure of the refrigerator 1 is demonstrated with reference to FIG.1 and FIG.2. The refrigerator 1 includes, for example, a main body 2, doors 8 to 11, an operation panel 12, a control device 15, an open / close sensor 16, a compressor 17, a cooler 18, a blower 19, a light emitting device 20, a camera 24, and a standard color plate 28.

  A plurality of rooms are formed in the main body 2 for containing ingredients and the like. For example, the main body 2 is formed with a refrigerating room 3, a switching room 4, an ice making room (not shown), a freezing room 5, and a vegetable room 6. Each room formed in the main body 2 is partitioned by a heat insulating material such as urethane foam. The number, type, and arrangement of the rooms formed in the main body 2 are not limited to the example shown in FIG.

  The refrigerator compartment 3 is a room with the largest capacity, for example. A chilled chamber 7 may be provided in the refrigerator compartment 3. The chilled room 7 is a room for putting meat and fish. The refrigerator compartment 3 is opened and closed by a door 8.

  The operation panel 12 is provided on the front surface of the door 8, for example. The operation panel 12 may be provided on another door or the main body 2. The operation panel 12 includes an input unit 13 and a notification unit 14, for example. The user operates the input unit 13 to input information. For example, the user operates the input unit 13 to set the temperature of each room. The notification unit 14 notifies the user. For example, the operation panel 12 includes a display and a speaker as the notification unit 14. The operation panel 12 is electrically connected to the control device 15.

  The switching chamber 4 is a room in which the temperature can be switched. For example, a plurality of temperatures are registered in advance in the control device 15 as the set temperatures of the switching chamber 4. For example, the user operates the input unit 13 of the operation panel 12 to select the set temperature of the switching chamber 4. The switching chamber 4 is opened and closed by a door 9. The ice making room is a room for making and storing ice. The ice making room is arranged next to the switching room 4.

  The freezer room 5 is a room for freezing foods and the like. The temperature of the freezer compartment 5 is maintained, for example, below freezing point. The freezer compartment 5 is opened and closed by a door 10.

  The vegetable room 6 is a room for containing vegetables and the like. A large beverage container may be placed in the vegetable compartment 6. For example, a 2 L plastic bottle may be put in the vegetable compartment 6. The vegetable compartment 6 is opened and closed by a door 11.

  An open / close sensor is provided for each of the doors 8 to 11. For example, the open / close sensor 16 is provided on the door 11 of the vegetable compartment 6. The open / close sensor 16 detects that the door 11 is open or closed. The result detected by the open / close sensor 16 is input to the control device 15. The control device 15 counts the time during which the door 11 is open based on the result detected by the open / close sensor 16. The control device 15 may count the time during which the door 11 is closed. The control device 15 uses the counted time as a control parameter for various controls. For example, when the control device 15 determines that the door 11 is opened for the first reference time or longer, the control device 15 notifies the notification from the notification unit 14 of the operation panel 12. For example, the control device 15 sounds a buzzer or chime provided as the notification unit 14. This alerts the user.

  The compressor 17 and the cooler 18 constitute a part of the refrigeration cycle provided in the refrigerator 1. The compressor 17, the cooler 18, and the blower 19 are electrically connected to the control device 15. When the blower 19 operates, an air flow is generated inside the refrigerator 1. Thereby, the air cooled by the cooler 18 passes through the air duct and is sent to each room. In each room, an air outlet for taking in cold air is formed. Ingredients stored in the room are cooled by the cold air taken into the room from the outlet. The air warmed by cooling the food in each room returns from the suction port and enters the duct. The air that has passed through the return duct reaches the cooler 18 and is cooled again by passing through the cooler 18.

  Each operation of the compressor 17, the cooler 18, and the blower 19 is controlled by the control device 15. For example, a temperature sensor (not shown) is provided in each room formed in the main body 2. The temperature sensor is composed of, for example, a thermistor for temperature detection. Information on the temperature detected by the temperature sensor is input to the control device 15. The control device 15 controls each operation of the compressor 17, the cooler 18, and the blower 19 based on, for example, information input from the temperature sensor and information input from the operation panel 12. The control device 15 controls the operation of a damper (not shown) that opens and closes the air passage.

  The control device 15 may transmit / receive information to / from an external device. For example, the control device 15 receives a signal for changing the set temperature from an external device. The control apparatus 15 may receive the signal for confirming the condition in a store | warehouse | chamber from an external apparatus. The external device includes, for example, a smartphone.

  The light emitting device 20 irradiates the vegetable compartment 6 with light. The light emitting device 20 is provided in the vegetable compartment 6, for example. The light emitting device 20 is provided on the back wall surface among the wall surfaces forming the vegetable compartment 6. The light emitting device 20 is electrically connected to the control device 15. The light emitting device 20 is controlled by the control device 15. The light emitting device 20 includes, for example, an LED 21, an LED 22, and an LED 23. LED is an abbreviation for Light Emitting Diode.

  The LED 21 emits blue light. For example, the LED 21 emits light having a wavelength band of 430 to 500 nm. The blue light from the LED 21 is applied to the vegetable compartment 6. The LED 22 emits green light. For example, the LED 22 emits light having a wavelength band of 500 to 550 nm. Green light from the LED 22 is applied to the vegetable compartment 6. The LED 23 emits red light. For example, the LED 23 emits light having a wavelength band of 600 to 780 nm. The red light from the LED 23 is applied to the vegetable compartment 6.

  The LED 21, LED 22, and LED 23 can be individually controlled by the control device 15. For example, white light is emitted from the light emitting device 20 when all of the LEDs 21, 22 and 23 are lit at the same time and rated. In the light emitting device 20, the LED 21, LED 22, and LED 23 may be configured as one package. For example, a three-color LED having excellent color rendering properties may be employed as the light emitting device 20. Moreover, you may comprise each of LED21, LED22, and LED23 as one package.

  The camera 24 photographs the vegetable compartment 6. The camera 24 is an example of an image acquisition device that acquires an image of the vegetable compartment 6. The image acquisition device is not limited to the camera 24. The camera 24 is provided in the vegetable compartment 6, for example. The camera 24 is provided on the back wall surface among the wall surfaces forming the vegetable compartment 6. The camera 24 is electrically connected to the control device 15. The camera 24 is controlled by the control device 15. Information on the image of the vegetable compartment 6 taken by the camera 24 is input to the control device 15.

  For example, the light emitting device 20 lights up in accordance with the circadian rhythm of vegetables. Thereby, deterioration of the vegetable put into the vegetable compartment 6 can be suppressed. For example, blue light has the effect of opening the pores of green leafy vegetables. Green light and red light are absorbed by chlorophyll. For this reason, green light and red light have the effect | action which increases a nutrient component by photosynthesis. By turning on the light emitting device 20, the biosynthetic reaction of vegetables can be promoted. In addition, the light emitting device 20 is turned on when, for example, the vegetable compartment 6 is photographed by the camera 24.

  The control device 15 includes a processing circuit including, for example, an input / output interface 25, a processor 26, and a memory 27 as hardware resources. The control device 15 implements each function by causing the processor 26 to execute the program stored in the memory 27.

  For example, the control device 15 has a function of turning on the light emitting device 20 in accordance with the circadian rhythm of vegetables. In addition, the control device 15 has a function of detecting the deterioration of the vegetables based on the image of the vegetable room 6 taken by the camera 24. For example, the control device 15 calculates a change in the color of the vegetable. For example, a color list is stored in the memory 27. The control device 15 compares the color of the image of the vegetable room 6 photographed by the camera 24 with the color included in the color list, and calculates the change in the vegetable color. The control device 15 may calculate a change in the position of the vegetable. Further, the control device 15 has a function of adjusting the light emitting device 20 and the camera 24 based on the color of the image of the vegetable room 6 photographed by the camera 24. The functions of the control device 15 are not limited to these examples.

  The standard color plate 28 is provided in the vegetable compartment 6. The standard color plate 28 is photographed by the camera 24. The surface of the standard color plate 28 is preferably white. However, the surface of the standard color plate 28 is not limited to white. The surface of the standard color plate 28 may be green or yellow, for example. The surface of the standard color plate 28 may be the same color as the color of the vegetables put in the vegetable room 6.

  For example, a lower container 29 and an upper container 30 are provided in the vegetable compartment 6. The lower container 29 and the upper container 30 are containers for containing ingredients and the like. The bottom surface of the lower container 29 is disposed at a position lower than the bottom surface of the upper container 30. The standard color plate 28 is disposed at a position where the surface of the standard color plate 28 can be photographed by the camera 24 even when food or the like is placed in the lower container 29 and the upper container 30. For example, the standard color plate 28 is provided on the lower surface of the upper container 30.

  A reference image is stored in the memory 27. The reference image is an image used when determining whether or not adjustment of the light emitting device 20 and the camera 24 is necessary. For example, an image of the standard color plate 28 previously captured by the camera 24 is stored in the memory 27 as a reference image. Registration of the reference image in the memory 27 is performed before the refrigerator 1 is shipped, for example.

  Next, the operation of the refrigerator 1 will be described with reference to FIGS. FIG. 3 is a flowchart showing the operation of the refrigerator 1 according to Embodiment 1 of the present invention. FIG. 4 is a diagram showing a timing chart when the refrigerator 1 performs the operation shown in FIG.

In the refrigerator 1, an operation for cooling each room is performed. Moreover, in the refrigerator 1, lighting control of the light-emitting device 20 according to the circadian rhythm of vegetables is performed, for example. 4, at time t _0, an example in which lighting control to suit the vegetable circadian rhythm is being performed.

The control device 15 determines whether a start condition is satisfied (S1). The start condition is a condition for starting determination of whether or not the light emitting device 20 and the camera 24 need to be adjusted. For example, when the door 11 of the vegetable compartment 6 is opened and then closed, the start condition is established. The control device 15 detects opening / closing of the door 11 based on the result detected by the opening / closing sensor 16. For example, the control unit 15 detects that the door 11 is opened at time _{t 1.} Controller 15 detects that the door 11 is closed at time _{t 2.} When detecting that the door 11 is closed after the door 11 is opened, the control device 15 determines that the start condition is satisfied. Other conditions may be adopted as the start condition. For example, the start condition may be satisfied when the user performs a specific operation on the input unit 13 of the operation panel 12.

  When the start condition is satisfied in S1, the control device 15 determines whether or not the light emitting device 20 and the camera 24 need to be adjusted. If adjustment is necessary, the control device 15 controls the light emitting device 20 and the camera 24 to change the lighting state of the LED and the photographing condition of the camera 24. Specific control contents are as follows.

First, the control device 15 photographs the standard color plate 28 with the camera 24 (S2). At the time of photographing with the camera 24, the light emitting device 20 is turned on. For example, a current having a current value A ₁ flows through the LED 21. A rated current flows through the LED 22 and the LED 23.

The control device 15 detects the color of the image (acquired image) of the standard color plate 28 acquired in S2 (S3). Next, the control device 15 compares the color of the acquired image detected in S <b> 3 with the color of the reference image stored in the memory 27. For example, the control device 15 performs color comparison based on the following equation (S4).
SC-SC_ini <SC_limit (1)
here,
SC: color of the image of the standard color plate 28 photographed by the camera 24 SC_ini: color of the reference image SC_limit: difference limit value. The difference limit value SC_limit is stored in the memory 27 in advance.

For example, the control device 15 digitizes the color of the image on the standard color plate 28 in S3 using the L ^* a ^* b ^* display system. In this case, the color of the reference image stored in the memory 27 is digitized by the L ^* a ^* b ^* display system. In the L ^* a ^* b ^* display system, chromaticity is represented by a ^* b ^* . For example, the control device 15 determines whether or not the following equation is established in S4.
SC (a ^* )-SC_ini (a ^* ) <SC_limit (a ^* ) (2)
SC (b ^* )-SC_ini (b ^* ) <SC_limit (b ^* ) (3)
Is smaller than the acquired image of ^{a *} and the reference image ^{a *} difference limit value difference is set for ^{a *} and SC_limit ^{(a *),} Equation 2 is satisfied. It is smaller than the acquired image of ^{b *} and the reference image ^{b *} difference limit value difference is set for ^{b *} and SC_limit ^{(b *),} the formula 3 is satisfied.

Blue light having a short wavelength promotes deterioration of the resin. As an example, let us consider a case where the resin used in the LED 21 deteriorates and the amount of blue light irradiated from the LED 21 to the vegetable compartment 6 decreases. If the LED 22 and the LED 23 are not deteriorated, only the amount of blue light is reduced, so that the standard color plate 28 has a yellowish color. a ^* represents the value of chromaticity in the red-green axis direction. For this reason, even if the light quantity from LED21 falls, a ^{* of} an acquired image does not change from a ^* of a reference image. That is, SC (a ^* )-SC_ini (a ^* ) = 0. In this case, Equation 2 holds.

On the other hand, b ^* represents the value of chromaticity in the yellow-blue axis direction. Therefore, the amount of light from LED21 is lowered, the acquired image ^{b *} will not match the reference image ^{b *.} Specifically, the deterioration of the resin used in the LED 21, become b ^* greater value of b ^* is the reference image of the acquired image. If this difference is smaller than the difference limit value SC_limit (b ^* ), Equation 3 is satisfied. When the difference becomes equal to or greater than the difference limit value SC_limit (b ^* ), Equation 3 does not hold.

If one or both of Expression 2 and Expression 3 are not satisfied, the control device 15 determines that the chromaticity of the image of the standard color plate 28 photographed by the camera 24 needs to be matched with the chromaticity of the reference image. For example, the control device 15 controls the current flowing through each LED of the light emitting device 20 to reduce the difference between the chromaticity of the image of the standard color plate 28 photographed by the camera 24 and the chromaticity of the reference image. Thereby, both Formula 2 and Formula 3 are materialized (S5). In the above example, the controller 15 lowers the _{A 2} from the rated current value of the LED 22. Controller 15 lowers the current value of the LED23 to _{A 3} from the nominal. Controller 15 does not change the current value LED21 from _{A 1.}

In the L ^* a ^* b ^* display system, the brightness is represented by L ^* . For example, the control device 15 determines whether or not the following equation is established in S4.
SC (L ^* )-SC_ini (L ^* ) <SC_limit (L ^* ) (4)
Is smaller than the acquired image of the ^{L *} and the reference image ^{L *} difference limit value difference is set for ^{L *} a SC_limit ^{(L *),} the formula 4 is satisfied.

  In the example described above, the amount of light from the LED 21 decreases due to deterioration of the resin. The amount of light from the LED 22 decreases as the current value is decreased. Similarly, the amount of light from the LED 23 decreases as the current value is decreased. Since the total amount of light from the light emitting device 20 decreases, the brightness of the acquired image decreases. If Expression 4 is not satisfied, the control device 15 determines that the brightness of the image of the standard color plate 28 photographed by the camera 24 needs to be matched with the brightness of the reference image.

For example, the control device 15 controls the exposure time of the camera 24 to reduce the difference between the brightness of the image of the standard color plate 28 photographed by the camera 24 and the brightness of the reference image. Thereby, Formula 4 is materialized (S6). In the above example, the control device 15 changes the exposure time of the camera 24 from E ₁ to E ₂ . E ₂ is a long time than _{E 1.} As a result, the amount of light taken into the camera 24 during shooting by the camera 24 is increased. The adjustment of the exposure time is effective when it is not desired to reduce the focus range of the camera 24.

For example, the control device 15 may control the aperture value of the camera 24 to reduce the difference between the brightness of the image of the standard color plate 28 photographed by the camera 24 and the brightness of the reference image. Thereby, Formula 4 is materialized (S6). In the above example, the control unit 15, the aperture value of the camera 24 is changed from _{D 2} to _{D 1.} D ₁ is _{D 2} smaller value. As a result, the amount of light taken into the camera 24 during shooting by the camera 24 is increased. Adjustment of the aperture value is effective when it is not desired to lengthen the shooting time.

The control device 15, the formula 1 at time t ₆ is determined to be satisfied, starts the processing for detecting the vegetables such as deterioration (S7). This process is performed based on the image of the vegetable compartment 6 photographed by the camera 24, for example. Note that the control device 15 may repeatedly perform the processing shown in S2-S6 until Formula 1 is satisfied.

  In the refrigerator 1 having the above configuration, the control device 15 controls each LED of the light emitting device 20 to reduce the difference between the color of the reference image stored in the memory 27 and the color of the image acquired by the image acquisition device. . For example, the control device 15 adjusts the value of the current flowing through each LED of the light emitting device 20 to reduce the difference between the chromaticity of the reference image and the chromaticity of the image acquired by the image acquisition device. The control device 15 controls the image acquisition device to reduce the difference between the brightness of the reference image stored in the memory 27 and the brightness of the image acquired by the image acquisition device. If it is the refrigerator 1 which has the said structure, the difference of the color of the image acquired by the image acquisition apparatus and the actual color of the vegetable in the vegetable compartment 6 can be reduced.

  In the present embodiment, an example has been described in which both the difference in chromaticity and the difference in lightness are reduced in order to make the color of the image acquired by the image acquisition device closer to the color of the reference image. The control device 15 may control each LED of the light emitting device 20 so as to reduce only the chromaticity difference.

  In the present embodiment, the example in which the exposure time or the aperture value of the camera 24 is changed to adjust the brightness (brightness) of the image acquired by the image acquisition device has been described. The control device 15 may change both the exposure time and the aperture value of the camera 24 in order to adjust the brightness. The control device 15 may control each LED of the light emitting device 20 in order to adjust the brightness.

  The standard color plate 28 of the present embodiment is an example of a color reference in which the color of the image acquired by the image acquisition device is compared with the color of the reference image. The color reference is not limited to the standard color plate 28. For example, a part of the lower container 29 or a part of the upper container 30 may be used as a color reference.

In this embodiment, the example using the L ^* a ^* b ^* display system has been described. Other display systems may be used to digitize the color of the image. For example, an XYZ display system may be used.

  In the present embodiment, an example of performing lighting control in accordance with the circadian rhythm of vegetables has been described. You may select LED to light according to the kind of vegetable preserve | saved in the vegetable compartment 6. FIG. For example, vegetables such as fruit vegetables, root vegetables and purple cabbage have no pores or few pores. When only such vegetables are put in the vegetable compartment 6, it is not necessary to turn on the LED 21 except when shooting with the camera 24.

  When blue light hits a plant, the plant opens pores and takes in carbon dioxide necessary for biosynthesis from the air. However, as long as the plant recognizes that the light has begun to strike, the plant does not have to be exposed to blue light. For this reason, when only leafy vegetables are put in the vegetable compartment 6, the LED 21 does not need to be continuously lit except during shooting by the camera 24. For example, you may restrict | limit lighting of LED21 other than the time of imaging | photography to 10 minutes per day.

  When only thin leafy vegetables such as spinach and komatsuna are contained in the vegetable compartment 6, the amount of red light having a high absorption rate on the leaf surface may be increased. When only vegetables that are headed, such as cabbage and Chinese cabbage, are put in the vegetable compartment 6, the amount of green light may be increased in order to allow light to reach the inside of the vegetable.

  In this Embodiment, the example which provides the one light-emitting device 20 in the wall surface of the back side of the vegetable compartment 6 was demonstrated. The light emitting device 20 may be provided at another position. The refrigerator 1 may include a plurality of light emitting devices 20 that irradiate the vegetable compartment 6 with light. In such a case, for example, the first light emitting device 20 is provided on the inner wall of the vegetable compartment 6. The second light emitting device 20 is provided so that light strikes the vegetables obliquely when viewed from the camera 24. For example, the second light emitting device 20 is disposed at a higher position than the first light emitting device 20.

  In this case, if a vegetable whose leaf color is desired to be clearly confirmed is placed in the vegetable compartment 6, the first light emitting device 20 may be turned on and the second light emitting device 20 may be turned off. Many of these vegetables are harvested in winter. For this reason, in the winter season, the first light emitting device 20 may be turned on and the second light emitting device 20 may be turned off. On the other hand, when fruits and vegetables for which surface irregularities such as cucumbers and eggplants are to be clearly confirmed are placed in the vegetable compartment 6, the second light emitting device 20 may be turned on and the first light emitting device 20 may be turned off. Thereby, light can be applied to cucumbers, eggplants, and the like at an angle of 45 degrees, for example, and low-temperature obstacles such as pitting can be easily determined from the acquired image. Many of these fruits and vegetables are harvested in summer. For this reason, in the summer, the second light emitting device 20 may be turned on and the first light emitting device 20 may be turned off. By properly using the plurality of light emitting devices 20, the lifetime of the LEDs can be extended.

  In the present embodiment, the example in which the LED 21, LED 22, and LED 23 irradiate light of different wavelength bands (monochromatic light) has been described. The example of the light which LED21, LED22, and LED23 irradiate is not limited to the said example. In addition, when LED21 irradiates the light of the 1st wavelength band and LED22 irradiates the light of the 2nd wavelength band, even if a part of 1st wavelength band and a part of 2nd wavelength band are the same, 1st wavelength band If all of the second wavelength band and the second wavelength band are not the same, the first wavelength band and the second wavelength band are different wavelength bands.

  In the present embodiment, the example in which the light emitting device 20 includes three LEDs has been described. This is an example. The number of LEDs provided in the light emitting device 20 may be two. The light emitting device 20 may include four or more LEDs.

  The processor 26 according to the present embodiment is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. As the memory 27, a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD may be adopted. The semiconductor memory includes RAM, ROM, flash memory, EPROM, EEPROM, and the like.

  Some or all of the functions of the control device 15 may be realized by hardware. As hardware for realizing the function of the control device 15, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof may be employed.

  The refrigerator according to the present invention can be applied to a refrigerator provided with a vegetable compartment.

  DESCRIPTION OF SYMBOLS 1 Refrigerator, 2 Main body, 3 Refrigeration room, 4 Switching room, 5 Freezing room, 6 Vegetable room, 7 Chilled room, 8-11 Door, 12 Operation panel, 13 Input part, 14 Notification part, 15 Control apparatus, 16 Opening / closing sensor , 17 compressor, 18 cooler, 19 blower, 20 light emitting device, 21-23 LED, 24 camera, 25 input / output interface, 26 processor, 27 memory, 28 standard color plate, 29 lower container, 30 upper container

Claims (6)

A first LED that irradiates the vegetable compartment with light in the first wavelength band;
A second LED that irradiates the vegetable compartment with light of a second wavelength band different from the first wavelength band;
An image acquisition device for acquiring an image of the vegetable room;
A memory in which a reference image is stored;
A color standard provided in the vegetable room;
A control device;
With
A lower container and an upper container are provided in the vegetable room,
The color reference is provided on the lower surface of the upper container,
The color reference image acquired by the image acquisition device is stored in the memory as the reference image,
The control device controls the first LED and the second LED to reduce a difference between the color of the reference image stored in the memory and the color of the color reference image acquired by the image acquisition device. . The said control apparatus controls the electric current which flows into the said 1st LED, and the electric current which flows into the said 2nd LED, and makes small the difference of the chromaticity of the said reference | standard image and the chromaticity of the image acquired by the said image acquisition apparatus. The refrigerator according to 1 . The refrigerator according to claim 1 or 2 , wherein the control device controls the image acquisition device to reduce a difference between the brightness of the reference image and the brightness of an image acquired by the image acquisition device. The image acquisition device is a camera;
The refrigerator according to claim 3 , wherein the control device controls an exposure time or an aperture value of the camera to reduce a difference between the brightness of the reference image and the brightness of an image acquired by the camera. A third LED for irradiating the vegetable compartment with light of a third wavelength band different from the first wavelength band and the second wavelength band;
The control device controls the first LED, the second LED, and the third LED to reduce a difference between a color of the reference image and a color of the color reference image acquired by the image acquisition device. The refrigerator according to any one of claims 1 to 4 . The refrigerator according to any one of claims 1 to 5 , wherein the first LED irradiates the vegetable room with blue light.

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