JP4642043B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator.

Conventional refrigerators are equipped with 3 primary color LEDs in the interior light, and the color of the interior light can be changed according to the temperature range of the interior temperature, or the color of the interior light can be changed when the door is open for a long time. (For example, Patent Document 1).
JP 2004-286333 A (FIG. 1 and the like)

  In the conventional refrigerator like patent document 1, as mentioned above, the color of the interior lamp is changed according to the interior temperature and the door opening time. However, the timing of changing the color of the interior light is limited to when the interior temperature changes or the door is opened for a long time, and the user cannot change the color at the desired timing. It was. Moreover, the color of the interior lamp is set in advance, and the user cannot freely change it to a favorite color.

This invention was made in order to solve the above problems, and it aims at providing the refrigerator which can change the color of an interior lamp at arbitrary timings.
It is another object of the present invention to provide a refrigerator that can change the color of the interior light to a favorite color.

Refrigerator of the present invention, a door switch for detecting the open or closed state of a door, a refrigerator equipped with interior light to turn on / off by opening and closing state of the door switch, different colors plurality of constituting the in-compartment lamp In a refrigerator including a light emission source, an operation unit that instructs to change the color of the interior light, and a control device that controls operations of the plurality of light emission sources according to the change instruction of the operation unit , a plurality of different colors The light source is a three-primary LED, and the color of the interior light is determined according to the combination of the three primary-color LEDs, and an operation panel for adjusting the interior temperature and displaying the interior temperature is provided. The primary color LED used for the interior light is also attached to the display part of the operation panel, and the operation panel display is the same color as the color of the interior light currently selected by the three primary color LED. Turn on the part.

According to the refrigerator of this invention, the color of the interior lamp can be changed at an arbitrary timing, and the user can be more satisfied with the interior lamp color.
Moreover, the effect that the color of an interior lamp can be set to arbitrary colors by the combination of each color of 3 primary color LED is also show | played.

Embodiment 1 FIG.
1 is a schematic diagram showing the main configuration of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a block diagram relating to the operation of the refrigerator interior lamp according to Embodiment 1 of the present invention, and FIG. FIG. 4 is a time chart showing the lighting / extinguishing timing of the refrigerator interior lamp according to Embodiment 1 of the present invention, and FIG. 4 is a diagram illustrating lighting on / off of the light source constituting the refrigerator interior lamp according to Embodiment 1 of the present invention. It is a time chart which showed an example of timing.
As shown in FIG. 1, an interior lamp 3 for illuminating the interior of the storage room 2 of the refrigerator 1 is attached. Moreover, the door switch 4 is attached to the storage chamber 2, and it is used in order to detect the open / closed state of the storage chamber door 2A. The storage door 2A has an operation panel 6 for setting the internal temperature, displaying the internal temperature, setting and displaying the ice making mode, and various operations of the refrigerator 1 on the back of the refrigerator 1. A control device (control board) 5 to be controlled is attached.

As shown in FIG. 2, the control device 5 is equipped with a microcomputer 9, and controls the internal temperature by controlling an actuator (not shown) attached to the refrigerator 1. The control device 5 is connected to the operation panel 6, the door switch 4, and the interior lamp 3, and the control device 5 includes drive circuits 10 a to 10 c for turning on / off the interior lamp 3. Yes.
On the operation panel 6, a display unit 8 including switches 7a to 7c for setting the internal temperature and a liquid crystal display (LCD) for displaying the internal temperature and an error code is provided. . The input states of the switches 7 a to 7 c are input to the microcomputer 9 on the control device 5, and the display unit 8 displays the internal temperature and error code according to instructions from the microcomputer 9.

FIG. 3 is a time chart showing the relationship between the open / closed state of the door switch 4 and the on / off state of the interior lamp 3. The microcomputer 9 receives the open / closed state information of the door switch 4, turns on the interior lamp 3 when the door switch 4 is open, and turns off the interior lamp 3 when the door switch 4 is closed.
Various light sources can be used as the light source constituting the interior lamp 3, but here, three primary color LEDs having three chips emitting red, green, and blue light are used. In the three primary color LEDs, which of the red, green, and blue chips is energized is determined by a command from the microcomputer 9. For example, when it is desired to energize only the red chip, the microcomputer 9 can be realized by turning on the drive circuit 10a, turning off the drive circuit 10b, and turning off the drive circuit 10c. In this way, ON / OFF combinations (seven combinations are possible) of the drive circuits 10a to 10c, that is, combinations of lighting / extinguishing of the red, green, and blue chips, can represent seven colors. Yes.

  FIG. 4 is a time chart showing the relationship between the open / closed state of the door switch 4 and the ON / OFF states of the drive circuits 10a to 10c. In FIG. 4, when the open / close state of the door switch 4 is “closed”, the drive circuits 10a to 10c are all turned off. Thereby, when the storage chamber door 2A is closed, the interior lamp 3 is turned off. When the open / closed state of the door switch 4 is “open”, the drive circuits 10a to 10c are allowed to be turned on. For example, when it is desired to light the interior lamp 3 in red, that is, when it is desired to energize only the red chip, the drive circuit 10a is turned on only when the open / close state of the door switch 4 is “open”. The drive circuits 10b and 10c are prohibited from being turned on even when the door switch 4 is in the “open” state. Thereby, the interior lamp 3 can be lit red only when the storage chamber door 2A is open. Similarly to FIG. 4, lighting in other six colors is also possible. In the first embodiment, the interior lamp is lit in a color selected by the user from among seven preset colors. It is.

Next, the operation in the first embodiment will be described. FIG. 5 is a flowchart of the interior lamp operation according to Embodiment 1 of the present invention. In the figure, “S” such as S1 represents a step.
In step 1, the initial value of the interior lamp color is set. Here, for example, white is set. In step 2, the ON / OFF conditions of the drive circuits 10a to 10c are determined based on the determination. When it is desired to light the interior lamp 3 in white, all the red, green, and blue chips may be energized, that is, all the drive circuits 10a to 10c may be turned on. For this reason, the ON / OFF condition of the drive circuits 10a to 10c is set to “all ON”, which is set as an initial value.
In step 3, it is determined whether or not a switch operation for changing the interior lamp color has been performed. When the user wants to change the color of the interior lamp 3, the user can select a favorite color from among the plurality of interior lamp colors by operating the switch on the operation panel 6. Here, seven colors can be set in advance, and the user selects a favorite color from the seven colors. In step 3, it is determined whether or not there has been a switch operation for changing the interior lamp color. For example, the switch 7a on the operation panel 6 is a dedicated switch for changing the interior lamp color, and each time the switch 7a is pressed, the interior lamp color selected changes from red → orange → green... Allows you to select your favorite color from the inside. If the switch 7a is operated, the process proceeds to step 4 to change the interior lamp color to the color selected by the user. In step 3, when there is no switch operation for changing the interior lamp color, the process proceeds to step 6.
In step 5, the ON / OFF conditions of the drive circuits 10a to 10c are determined according to the interior lamp color determined in step 4, and the process proceeds to step 6.
In step 6, the open / close state of the storage chamber door 2A is detected. If the detection result of the door open / close state by the door switch 4 is open, the process proceeds to step 7 and the interior lamp 3 is turned on according to the ON / OFF conditions of the already determined drive circuits 10a to 10c. If the detection result of the door open / close state by the door switch 4 is closed, the process proceeds to step 8 where the drive circuits 10a to 10c are turned off and the interior lamp 3 is turned off.
Thereafter, the process returns to step 3 to determine whether or not there has been a switch operation for changing the interior lamp color.

As described above, in the first embodiment, the user can select the color of the interior light 3 at a favorite timing and a favorite color by operating the switch on the operation panel 6, so that the user's satisfaction with the product is further improved. be able to.
In the first embodiment, the operation panel 6 is attached to the outside of the storage chamber door 2A. However, the operation panel 6 may be attached to the storage chamber 2. By installing the operation panel 6 in the storage chamber 2 to which the interior light 3 is attached, the color of the interior light can be changed while actually checking the color of the interior light. It will be easier to select the correct color.

Embodiment 2. FIG.
In the first embodiment, the switch 7a is an exclusive switch for changing the interior light color. However, the second embodiment uses the switch 7a as a switch for performing another function such as temperature control. By using the switch 7a as an interior light color change switch only in a special mode, the interior light color change switch is also used as a switch of another function.
In the second embodiment, in FIG. 2, for example, the switch 7a is assigned as a temperature adjustment switch and the switch 7b is assigned as a rapid cooling switch. When the switch 7a and the switch 7b are simultaneously pressed for a certain time, for example, 3 seconds, the interior lamp color change mode is started. The switch 7a can be used as an interior light color change switch only for a certain time, for example, 3 minutes after the interior light color change mode is started.

FIG. 6 is a flowchart of the interior lamp operation according to Embodiment 2 of the present invention. FIG. 6 is obtained by adding Steps 11 to 13 to the flowchart of FIG. Steps 1 to 8 are the same as those in FIG.
In the second embodiment, after the initial ON / OFF conditions of the drive circuits 10a to 10c are determined in step 2, the process proceeds to step 11 to determine whether or not there is a switch operation for starting the interior light color change mode. Here, the switches 7a and 7b Is simultaneously pressed for 3 seconds. If there is no switch operation for changing the interior lamp color, step 11 is repeated. If there is a switch operation for starting the interior lamp color change mode, the process proceeds to step 12. In step 12, it is determined whether or not a certain time, for example, 3 minutes has elapsed. If 3 minutes have not elapsed in step 12, the inside lamp color change mode is set, and the process proceeds to step 3. During the interior light color change mode, the role of the switch 7a is changed from the temperature adjustment switch to the interior light color change switch. The interior lamp color determining method and interior lamp lighting / extinguishing method in steps 3 to 8 are the same as those in the first embodiment. In step 12, when 3 minutes have passed, it progresses to step 13 and an interior lamp color change mode is complete | finished. At the timing when the interior lamp color change mode ends, the role of the switch 7a is changed from the interior lamp color change switch to the temperature adjustment switch.

  As described above, in the second embodiment, since the interior light color selection switch and the switch for other functions such as temperature adjustment are combined, the number of switches can be reduced. As a result, space can be saved, so that the constraints on the operation panel 6 relating to the design of the storage room door 2A are relaxed, the degree of freedom in refrigerator design is improved, and the cost is reduced by reducing the number of parts of the operation panel 6. Can be planned.

Embodiment 3 FIG.
In the first and second embodiments, the user selects a favorite lamp from among seven preset lamp colors, but in the third embodiment, the selectable lamp The color can be selected as desired according to the user's preference. The fine color adjustment is performed by adjusting the energization current of each of the red, green, and blue chips. The adjustment of the energizing current can be performed, for example, by performing a square wave output from the microcomputer 9 to the drive circuits 10a to 10c and changing the ON time (hereinafter referred to as “DUTY”) in one cycle of the square wave output. .
FIG. 7 is a table showing a setting example of DUTY in the third embodiment of the present invention. In order to adjust the energization current for each of the red, green and blue chips, a stage and DUTY table is set so that a plurality of DUTYs can be set for each chip in advance, for example, 10 levels of DUTY from low to high DUTY. Prepare. In FIG. 7, for example, any of 10 levels of DUTY can be set for each chip from 0% to 100% of DUTY.

FIG. 8 shows a time chart of the open / closed state of the door switch 4 and the outputs of the driving circuits 10a to 10c of the interior lamp 3 according to the third embodiment. FIG. 8 shows an example in which, for example, the red chip DUTY is set to 100%, the green chip DUTY is set to 20%, and the blue chip DUTY is set to 60%. The ON permission timing of the drive circuits 10a to 10c is only when the open / close state of the door switch 4 is “open”, and is the same as in the first embodiment.
In the third embodiment, the square wave output of the drive circuits 10a to 10c is performed during the ON permission timing of the drive circuits 10a to 10c. As a period of the square wave output, a period that does not feel flicker when viewed with human eyes, for example, 1 msec is selected, and ON times of the drive circuits 10a to 10c in one period are distinguished by the selected DUTY. In FIG. 8, since 20% is selected as the DUTY of the green chip, the driving circuit 10b is allowed to be turned on only for 0.2 msec in one cycle of 1 msec, and the remaining 0.8 msec is turned off. Similarly, since 60% is selected for the DUTY of the blue chip, the ON / OFF time is 0.6 / 0.4 msec. Since the red chip DUTY is selected to be 100%, the drive circuit 10a continues to be ON.

FIG. 9 is a flowchart of the interior lamp operation according to Embodiment 3 of the present invention. In FIG. 9, in step 21, the initial value of the interior lamp color is set. The DUTY of each of the drive circuits 10a to 10c is selected from 1 to 10 stages and set as an initial value. In step 22, it is determined whether the storage door 2A is open or closed. If the storage room door 2A is open, the process proceeds to step 23, and the interior lamp 3 is turned on. The interior lamp color at this time is determined by the initial DUTY determined in step 21. In step 22, when the storage chamber door 2A is closed, the process proceeds to step 24, and the interior lamp 3 is turned off.
Next, in step 25, it is determined whether or not a red chip DUTY change switch operation has been performed. Here, the user can adjust the DUTY of each chip by operating the operation panel 6. For example, the switch 7a on the operation panel 6 is a red chip DUTY adjustment switch, and the red chip DUTY can be selected from 1 to 10 stages by pressing the switch. Here, referring to the stage and the DUTY table shown in FIG. 7, the DUTY of the red chip is determined from the stage selected by the user. As in the case of the red chip, the DUTY of each of the three primary colors can be adjusted by using the switch 7b as the DUTY adjustment switch for the green chip and the switch 7c as the DUTY adjustment switch for the blue chip.
If it is determined in step 25 that the red chip DUTY change switch operation has been performed, the process proceeds to step 26 where the red DUTY is changed to the DUTY selected by the switch operation. If there is no red DUTY change switch operation in step 25, the process proceeds to step 27.
In step 27, it is determined whether or not a green chip DUTY change switch operation has been performed. As in the case of the red duty change, if there is a green chip duty change switch operation in step 27, the process proceeds to step 28, and the green duty is changed to the selection result by the switch operation. If it is determined in step 27 that the green DUTY change switch has not been operated, the process proceeds to step 29.
In step 29, it is determined whether or not a blue chip DUTY change switch operation has been performed. As in the case of red and green DUTY change, if there is a blue chip DUTY change switch operation in step 29, the process proceeds to step 30 to change the blue DUTY to the selection result by the switch operation. In step 29, when the blue DUTY change switch is not operated, the process returns to step 22 and the subsequent steps are repeated.

  As described above, in the method of the third embodiment, the user can finely adjust the DUTY of the red, green, and blue chips, so that the user can select the interior as compared with the first and second embodiments. There are many types of lamp colors that can be closer to the user's favorite colors.

Reference form .
In the reference mode , the color information of the interior lamp 3 selected by the user in the first to third embodiments is displayed on the display unit 8 of the operation panel 6.
FIG. 10 shows an example in which the internal lamp color selection result of Embodiment 1 is displayed on the display unit 8 of the operation panel 6 outside the storage. Similar to the display of the “internal temperature” and “ice-making mode” (normal ice making / rapid ice making / ice making stop) state, a “inside light color” display portion is provided. For the seven colors for which the interior lamp color can be set, the interior lamp color names such as “red”, “green”, and “blue” can be displayed. For example, when the user selects the interior light color “orange”, only the display of “orange” is lit among the seven candidate colors “interior light color”. As a result, it is possible to check the color of the interior lamp currently selected by the user without opening the door, so the number of times the door is opened can be suppressed, and temperature rise in the interior is prevented. be able to.

  FIG. 11 is an example in which the interior lamp color selection result of the third embodiment is displayed on the display unit 8 of the operation panel 6. In this case as well, a display section of “internal lamp color” is provided in the same manner as the display of the internal temperature and the ice making mode (normal ice making, rapid ice making, ice making stop) state. “Red,” “green,” and “blue” items are provided in “inside lamp color”, and the DUTY of each chip is displayed in stages from 1 to 10. For example, when red DUTY is at stage 5, green DUTY is at stage 3, and blue DUTY is at stage 7, as shown in FIG. 11, 5 items are displayed for “red”, 3 items for “green”, and “blue”. 7 bars are displayed in the item, and the DUTY of each chip can be confirmed by the number of bars.

  From these displays, the user can confirm or predict the color of the currently selected interior light. In the third embodiment, since there are many interior lamp colors that can be set, it is difficult to determine a subtle color difference only by the interior lamp color, but by making it possible to quantitatively confirm the setting state. Therefore, it is possible to distinguish subtle color differences, and to increase the user's satisfaction with the interior lamp color. It should be noted that it is preferable to clearly indicate the type of color output by a combination of “red”, “green”, and “blue” DUTY in a specification or the like.

Embodiment 4 FIG.
In the reference mode , the example in which the color information based on the selection result of the interior lamp color is displayed on the display unit 8 on the operation panel 6 has been described. However, in Embodiment 4 , the color information 3 used for the interior lamp 3 is used. By attaching the primary color LED to the display unit 8 on the operation panel 6, the color of the interior lamp set by the user is actually output.
FIG. 12 is a view showing an example of the operation panel according to the fourth embodiment of the present invention. In FIG. 12, the display unit 8 on the operation panel 6 is configured by an LCD, and an LED 11 is attached as a backlight of the display unit 8. The LED 11 is the same as the three primary color LEDs used for the interior light so that it can be lit in the same color as the interior light selected by the user.

From the above, the user can have a more specific image compared to the expression of colors such as “orange” and “purple” shown in the reference form , and the step display of the current rate of red, green, and blue chips. Therefore, the color that the user wants to set can be set reliably.
Moreover, since not only the interior lamp but also the operation panel 6 can be turned on with the color selected by the user, the user's satisfaction with the refrigerator can be further increased.

Embodiment 5 FIG.
FIG. 13 is a flowchart of the interior lamp operation according to Embodiment 5 of the present invention. FIG. 13 is obtained by adding steps 41 to 45 to the flowchart according to the first embodiment shown in FIG.
In FIG. 13, the initial value of the interior lamp color is determined to be, for example, white in step 1, and the ON / OFF condition of the drive circuits 10a to 10c is set to “all ON” in step 2, as in the first embodiment. It is the same.
In the fifth embodiment, after step 2, it is determined in step 41 whether or not the service mode is in effect. If it is determined in step 41 that the service mode is being used, the color of the interior lamp is changed in step 42 to a color dedicated to the service mode, for example, red. In step 43, ON / OFF conditions of the drive circuits 10a to 10c are determined according to the interior lamp color determined in step 42.
Here, the service mode is a special mode for a serviceman to check the operation state of the refrigerator in the market. For example, there is a mode in which an error code is checked or an actuator is forcibly operated. In the service mode, the error code may be displayed on the display unit 8 of the operation panel 6 or the special mode may be displayed. Therefore, the user can check the internal temperature and the set temperature during the service mode. May not be possible. Further, when the actuator is forcibly operated in the service mode, there is a possibility that the actuator has moved to a position where it cannot be cooled properly only during the service mode. For this reason, the service person needs to end the service mode immediately after using the service mode.
In step 42 to step 43, during the service mode, the interior lamp color is changed to a color that attracts the attention of the service person or the user, for example, red or orange, thereby emphasizing that the current service mode is being used, and prompt service. It is possible to prompt the release of the mode.
If it is determined in step 41 that the service mode is not selected, the process proceeds to step 44, in which it is determined whether or not the previous service mode has been set, that is, whether or not the service mode has just ended. If it is determined in step 44 that the previous service mode has been selected, the process proceeds to step 45 to return the interior lamp color to the color immediately before the service mode is started. Then go to step 3.
If it is determined in step 44 that the previous service mode was not selected, the process proceeds to step 3. Since subsequent steps 3 to 7 are the same as those in the first embodiment, description thereof will be omitted.

As described above, in the fifth embodiment, since the interior lamp color is changed to a dedicated color during the service mode, it is possible to emphasize to the serviceman and the user that the service mode is being used. , Prompt release of the service mode.
In the fifth embodiment, an example in which the interior light color is changed to a dedicated color during the service mode has been shown. However, the interior light blinks in addition to the interior light color change, and the service mode is set. May be emphasized more.

Embodiment 6 FIG.
FIG. 14 is a flowchart of the interior lamp operation according to Embodiment 6 of the present invention. FIG. 14 is obtained by adding steps 51 to 55 to the flowchart according to the first embodiment shown in FIG.
In FIG. 14, the initial value of the interior lamp color is determined to be, for example, white in Step 1, and the ON / OFF condition of the drive circuits 10a to 10c is set to “all ON” in Step 2, as in the first embodiment. It is the same.
In the sixth embodiment, it is determined in step 51 whether or not the rapid cooling mode is in effect. If it is determined in step 51 that the rapid cooling mode is being performed, the color of the interior lamp is changed to a color dedicated to the rapid cooling mode, for example, blue or green, in step 52. In step 53, ON / OFF conditions of the drive circuits 10a to 10c are determined according to the interior lamp color determined in step 52.
If it is determined in step 51 that the rapid cooling mode is not selected, the process proceeds to step 54, in which it is determined whether or not the previous rapid cooling mode has been set, that is, whether or not the rapid cooling mode has been completed. If it is determined in step 54 that the previous rapid cooling mode has been selected, the process proceeds to step 55 to return the interior lamp color to the color immediately before the rapid cooling mode is started. Then go to step 3.
If it is determined in step 54 that the previous rapid cooling mode has not been established, the process proceeds to step 3. Since subsequent steps 3 to 7 are the same as those in the first embodiment, description thereof will be omitted.

As described above, in Embodiment 6 , during the rapid cooling mode, the interior lamp color is changed to a dedicated color, so that the user is in the rapid cooling mode, that is, the special mode and merit function of the refrigerator. It can be emphasized that it is being implemented.
In the sixth embodiment, an example in which the interior lamp color is changed to a dedicated color during the rapid cooling mode is shown, but not only the interior lamp color is changed, but the interior lamp blinks and the rapid cooling mode is used. You may emphasize more.
Further, in the sixth embodiment, an example in which the interior lamp color is changed to a dedicated color during the rapid cooling mode has been shown. However, the interior lamp color change is not limited to the rapid cooling mode, and during the power saving mode, the deodorizing mode, and the like. It can also be applied when other various modes are implemented.

Schematic which shows the main structures of the refrigerator which concerns on Embodiment 1 of this invention. The block diagram in connection with operation | movement of the interior lamp of the refrigerator which concerns on Embodiment 1 of this invention. The time chart which showed the lighting / extinction timing of the interior lamp of the refrigerator which concerns on Embodiment 1 of this invention. The time chart which showed an example of the lighting / extinguishing timing of the light emission source which comprises the refrigerator interior lamp which concerns on Embodiment 1 of this invention. The flowchart of the interior lamp operation | movement in Embodiment 1 of this invention. The flowchart of the interior lamp operation | movement in Embodiment 2 of this invention. The table | surface which shows the example of a setting of DUTY in Embodiment 3 of this invention. The time chart which showed an example of the lighting / extinguishing timing of the light emission source which comprises the refrigerator interior lamp which concerns on Embodiment 3 of this invention. The flowchart of the interior lamp operation | movement in Embodiment 3 of this invention. FIG. 4 is an exemplary diagram of an operation unit according to a reference embodiment of the present invention. The another example figure of the operation part in the reference form of this invention. The illustration figure of the operation part in Embodiment 4 of this invention. The flowchart of the interior lamp operation | movement in Embodiment 5 of this invention. The flowchart of the interior lamp operation | movement in Embodiment 6 of this invention.

  DESCRIPTION OF SYMBOLS 1 Refrigerator, 2 Storage room, 2A Storage room door, 3 Interior light, 4 Door switch, 5 Control apparatus (control board), 6 Operation panel, 7a, 7b, 7c Switch, 8 Display part, 9 Microcomputer, 10a, 10b , 10c LED drive circuit, 11 LED for backlight of display unit.

Claims (3)

A refrigerator comprising a door switch that detects an open / closed state of a door, and an interior light that is turned on / off by the open / closed state of the door switch ,
A plurality of light sources of different colors constituting the interior light;
An operation unit for instructing to change the color of the interior light;
In a refrigerator including a control device that controls operations of the plurality of light emission sources according to a change instruction of the operation unit ,
The plurality of light emitting sources of different colors are three primary color LEDs, and the color of the interior lamp is determined according to a combination of the three primary color LEDs.
An operation panel for adjusting the internal temperature and displaying the internal temperature is provided, and the three primary color LEDs used for the internal light are also attached to the display part of the operation panel, and currently selected by the three primary color LEDs. The refrigerator is characterized in that the display part of the operation panel is lit in the same color as the color of the internal lamp . 2. The refrigerator according to claim 1 , wherein the color of the interior light is changed to a dedicated color during a service mode for checking the operation state of the refrigerator. The refrigerator according to claim 1, wherein the color of the interior lamp is changed according to the operation mode of the refrigerator.

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