Refrigerator and control method of refrigerator

Abstract

An embodiment of the present invention provides a refrigerator comprising: a box body forming at least one space; a display door which opens and closes the space and is composed of a display panel for outputting content; a first door, a second door, and a third door for opening and closing the space and provided with a light source; and a control unit that controls the display panel and the light source. The first door, the second door and the third door comprise a front plate and a light guide plate for guiding light to the front plate; the light source irradiates light to the light guide plate, and the light irradiated to the light guide plate penetrates through the front plate; if the light source is turned on, light of a first color is emitted from the front plate.

Description

Technical Field

[0001] The invention relates to a refrigerator and a control method of the refrigerator. Background Art

[0002] Generally, a refrigerator is a household appliance that can store food at low temperature in an internal storage space shielded by a refrigerator door. The refrigerator can cool the interior of the storage space by using cold air generated by heat exchange with a refrigerant circulating in a refrigeration cycle, thereby being able to preserve the stored food in an optimal state.

[0003] With the change of dietary habits and the trend of high-end products, refrigerators as described above are gradually becoming larger and more multifunctional, and refrigerators with various structures and convenient devices considering the convenience of users are constantly appearing.

[0004] In order to coordinate with the environment in which the refrigerator is installed or the surrounding furniture or home appliances, technologies for diversifying the appearance of the front surface of the refrigerator door are being continuously developed, and this trend is seen in the entire home appliance.

[0005] U.S. Patent No. 8,789,900 (hereinafter referred to as "existing document 1") discloses a structure in which a decorative panel for forming an appearance is installed on the front of a refrigerator door. The decorative panel is detachably constructed and can form an appearance of the door front that matches the user's preference.

[0006] However, the refrigerator of the prior art document 1 has the following problem: when a user wants to change the appearance, the user needs to separate the entire decorative panel and then replace it, and the decorative panel before replacement cannot be used again.

[0007] In order to solve the problems mentioned above, Chinese Patent No. 103250018 (hereinafter referred to as "existing document 2") discloses a refrigerator having a reflective layer and a transparent panel on the front side of the refrigerator door, and colored light-emitting components are installed on both side ends of the reflective layer, thereby enabling the transparent panel to emit light of a set color.

[0008] However, the existing document 2 does not disclose a technique for operating a light emitting member in a refrigerator or controlling the operation of a light emitting member. Summary of the invention

[0009] Problem to be solved

[0010] An object of the present invention is to provide a refrigerator capable of changing the color of a door and a control method of the refrigerator in order to solve the above-mentioned problem.

[0011] Technical solutions to the problem

[0012] One embodiment of the present invention provides a refrigerator, which is characterized in that it includes: a box body, which forms at least one space; a display door, which opens and closes the space and is composed of a display panel that outputs content; a first door, a second door and a third door, which open and close the space and are provided with a light source; and a control unit, which controls the display panel and the light source; the first door, the second door and the third door include a front panel and a light guide plate that guides light to the front panel; the light source irradiates light to the light guide plate, and the light irradiated to the light guide plate passes through the front panel; if the light source is turned on, light of a first color is emitted from the front panel.

[0013] The invention is characterized in that the light source included in at least one of the first door, the second door and the third door is configured in one of a lower edge type, a side edge type, a lower and side edge type, and a direct type structure.

[0014] The characteristic is that the light source is an LED capable of presenting RGB colors.

[0015] The invention is characterized in that the display door also includes a front camera; the control unit activates the front camera when a user approaches the display door and photographs the food recognized by the front camera; the control unit stores information about the food in a database based on the photographed food, and the information about the food includes the name of the food and the shelf life of the food.

[0016] The invention is characterized in that at least one of the first door, the second door and the third door includes a camera inside; the control unit photographs the food through the camera and stores the information about the food in a database, wherein the information about the food includes the name of the food and the shelf life of the food.

[0017] The invention is characterized in that the control unit receives information on food from a user through the display panel and stores the information on the food in a database, wherein the information on the food includes the name of the food and the shelf life of the food.

[0018] The feature is that the refrigerator also includes an internal camera for photographing the interior of the refrigerator; the control unit determines the location of the food through the internal camera, and stores the determined location of the food in the database together with information about the food.

[0019] The control unit outputs at least one of the expiration date of the food, the location of the food, and the storage quantity of the food stored in the space on the display panel.

[0020] The feature is that the control unit outputs the shelf life of the food using a shelf life indicator; when the shelf life of the food is less than a first period, the control unit outputs the shelf life indicator in a second color; when the shelf life of the food has expired, the control unit outputs the shelf life indicator in a third color.

[0021] The invention is characterized in that the control unit changes the color of at least one of the first door, the second door and the third door based on the expiration date of the food.

[0022] The control unit is characterized in that the control unit changes the colors of the first door, the second door, and a partial area of ​​the third door based on the position of the food.

[0023] The control unit is characterized in that the control unit outputs a flashing indicator at the position of the food using the light source located in the partial area.

[0024] The refrigerator is characterized in that the refrigerator further comprises a communication unit for communicating with a user terminal; and when a request for a recommended position of a first food is received from the user terminal, the control unit changes the color of a door corresponding to the recommended position of the first food.

[0025] The control unit is characterized in that, when the position of the second food stored in the space does not coincide with the recommended position, the control unit outputs a guidance indicator pointing to the recommended position of the second food.

[0026] The method is characterized in that the recommended position is determined based on at least one of a temperature of the space, a degree of crowding of the space, a property of the first food, and a freshness of the first food.

[0027] The invention is characterized in that the communication unit receives information from a server; when a third food stored in the space is taken out, the control unit updates the information being output on the display panel; when there is no food related to the third food in the space, the control unit outputs a pop-up window on the display panel, and the pop-up window outputs the information received from the server.

[0028] The feature is that the control unit recognizes at least one face through the front camera, receives a name corresponding to the recognized face through the display panel, matches the recognized face and the name and stores them in the database; the control unit receives a memo through the display panel, the memo includes a name corresponding to the first face and information about a fourth food; when the first face is recognized through the front camera, the control unit changes the color of a portion of the door corresponding to the position of the fourth food.

[0029] The refrigerator is characterized in that the refrigerator further includes at least one temperature sensor for sensing the temperature of the space; when the temperature sensed by the temperature sensor is above a first temperature, the control unit changes the color of the door corresponding to the temperature sensor.

[0030] The control unit is characterized in that, when the temperature sensed by the temperature sensor is equal to or higher than the first temperature, the control unit outputs a warning screen through the display panel.

[0031] The display panel is characterized in that the display panel operates in one of a transparent mode, a semi-transparent mode and an opaque mode based on the control of the control unit.

[0032] One embodiment of the present invention provides a control method for a refrigerator, the refrigerator comprising: a cabinet forming at least one space; a display door, opening and closing the space, and comprising a display panel for outputting content; a first door, a second door, and a third door, opening and closing the space, and provided with a light source; and a control unit, controlling the display panel and the light source; the method for controlling the refrigerator comprising: a step in which the light source irradiates light to a light guide plate included in the first door, the second door, and the third door; a step in which the light irradiated to the light guide plate passes through a front panel included in the first door, the second door, and the third door; and a step in which, if the light source is turned on, light of a first color is emitted from the front panel.

[0033] Effects of the Invention

[0034] According to an embodiment of the present invention, the location and state of food stored in the refrigerator can be checked at a glance, and management is easy.

[0035] In addition, according to an embodiment of the present invention, the space utilization rate of the storage box inside the refrigerator can be improved by confirming the optimal position of the food to be placed in the refrigerator.

[0036] In addition, according to an embodiment of the present invention, by displaying information on abnormal events such as high temperature information of food to be stored in a refrigerator, energy efficiency can be improved, and food can be managed in a fresher manner.

[0037] The effects that can be obtained by the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects that are not mentioned through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a three-dimensional diagram of a refrigerator according to an embodiment of the present invention, Figure 2 This is a front view of the refrigerator with the door open.

[0039] Figure 3 is a three-dimensional diagram of a refrigerator door according to an embodiment of the present invention, Figure 4The figure shows a state where the panel assembly is separated from the refrigerator door.

[0040] Figure 5 It is along Figure 4 The cross-sectional view of the 5-5 line, Figure 6 It is a diagram showing the arrangement of a light guide plate and a light source.

[0041] Figure 7 is a block diagram showing the flow of control signals of a refrigerator according to an embodiment of the present invention, Figure 8 1 is a diagram showing a state in which all doors of a refrigerator according to an embodiment of the present invention are illuminated. Fig. 9 This is a diagram showing a state in which a part of a plurality of doors of a refrigerator according to an embodiment of the present invention emit light.

[0042] Fig.10 and Fig.11 FIG. 1 is a diagram for explaining a display door having a transparent display panel according to an embodiment of the present invention.

[0043] Fig.12 It is a diagram for explaining the positions of the light guide plate and the light source of the LED door according to one embodiment of the present invention.

[0044] Fig.13a and Fig.13b It is a diagram for explaining a method for identifying food in a refrigerator according to an embodiment of the present invention.

[0045] Fig.14 FIG. 1 is a diagram for explaining a food management user interface of a refrigerator according to an embodiment of the present invention.

[0046] Fig.15a and Fig.15b It is a diagram for explaining an embodiment of changing the door color based on the freshness of food in a refrigerator according to an embodiment of the present invention.

[0047] Fig.16a and Fig.16b It is a diagram for explaining an example of a recommended position for providing food in a refrigerator according to an example of the present invention.

[0048] Fig.17 It is a diagram for explaining an updated embodiment according to whether to take out food in a refrigerator according to one embodiment of the present invention.

[0049] Fig.18 The present invention is used to explain an embodiment of outputting notifications of various locations according to an event occurring in a refrigerator according to an embodiment of the present invention.

[0050] Fig.19a and Fig.19b It is a diagram for explaining an embodiment of guiding the location of food in a refrigerator through face recognition according to one embodiment of the present invention.

[0051] Fig. 20 This is a diagram for explaining an embodiment of irradiating light to a portion subjected to an impact in a refrigerator according to an embodiment of the present invention.

[0052] Fig.21 It is a diagram for explaining an embodiment of running a game application in a refrigerator according to an embodiment of the present invention.

[0053] Figure 22 to Figure 27 This is a diagram for explaining an embodiment of providing a notification when food above an appropriate temperature is placed in a refrigerator according to one embodiment of the present invention. DETAILED DESCRIPTION

[0054] Below, the embodiments disclosed in this specification are described in detail with reference to the accompanying drawings, and the same or similar constituent elements are given the same figure marks regardless of the figure numbers, and repeated descriptions thereof will be omitted. The suffixes "module" and "unit" used in the following description for the constituent elements are only given or mixed for the convenience of writing the specification, and they themselves do not have mutually distinguishing meanings or functions. In addition, in the process of describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology will cause confusion with the technical ideas of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only for the easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification should not be limited by the attached drawings, but should cover all changes, equivalents and even substitutes included in the ideas and technical scope of the present invention.

[0055] Terms including ordinal numbers such as "first" and "second" may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from other components.

[0056] If a certain component is mentioned as being "connected" or "contacting" another component, it may be directly connected to or in contact with the other component, but it can also be understood that there are other components between them. Conversely, if a certain component is mentioned as being "directly connected" or "directly in contact with" another component, it should be understood that there are no other components between them.

[0057] Unless the context clearly indicates a different meaning, an expression in the singular includes an expression in the plural.

[0058] In the present application, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, actions, constituent elements, parts or their combinations recorded in the specification, and do not preclude the possibility of the existence or addition of one or more other features or numbers, steps, actions, constituent elements, parts or their combinations.

[0059] Figure 1 is a three-dimensional diagram of a refrigerator according to an embodiment of the present invention, Figure 2 It is a front view of the refrigerator door being opened. Hereinafter, descriptions repeated with the above-mentioned drawings are omitted.

[0060] Reference Figure 1 The refrigerator 1 of the embodiment of the present invention may include: a body 10 forming a storage space (or a storage area); and a door 20 for opening and closing the storage space of the body 10 .

[0061] In one embodiment, the box body 10 may form a storage space divided into upper and lower parts, a refrigerating chamber may be formed at the upper part, and a freezing chamber may be formed at the lower part. The refrigerating chamber may be referred to as the upper storage space, and the freezing chamber may be referred to as the lower storage space.

[0062] The door 20 can open and close the refrigerator compartment and the freezer compartment, respectively. In one embodiment, the door 20 can be rotatably mounted on the cabinet 10, and can be opened and closed by rotating the refrigerator compartment and the freezer compartment, respectively. Of course, the door 20 can be configured to open and close the refrigerator compartment and / or the freezer compartment by entering and exiting.

[0063] The door 20 may include a refrigerator door 201 for opening and closing the refrigerator compartment and a freezer door 202 for opening and closing the freezer compartment. The refrigerator door 201 may be referred to as an upper door, and the freezer door 202 may be referred to as a lower door.

[0064] The refrigerator door 201 may have a left refrigerator door and a right refrigerator door arranged side by side as a pair. The left refrigerator door and the right refrigerator door may be independently rotated to open and close the refrigerator. The left refrigerator door and the right refrigerator door may be arranged adjacent to each other and may be formed in the same size.

[0065] The freezer door 202 may also have a left freezer door and a right freezer door arranged side by side in a pair. The left freezer door and the right freezer door may be independently rotated to open and close the freezer compartment. The left freezer door and the right freezer door may be arranged adjacent to each other and may be formed in the same size.

[0066] Of course, in this embodiment, for the sake of convenience, a refrigerator in which a refrigerating chamber is arranged above a freezing chamber is taken as an example for explanation, but the present invention is not limited to the form of a refrigerator and can be applied to all types of refrigerators with doors.

[0067] On the other hand, the door 20 may form a front appearance of the refrigerator 1 when the door 20 is closed, and may form an appearance of the refrigerator 1 viewed from the front when the refrigerator 1 is installed.

[0068] The door 20 may have a structure that can selectively emit light from the front side, and may be configured to emit light at a set color or brightness. Thus, the user can change the front color or brightness of the door 20 without separating or disassembling the door 20, thereby changing the overall appearance of the refrigerator 1.

[0069] Hereinafter, the structure of the door 20 will be described in detail with reference to the drawings.

[0070] In one embodiment of the present invention, the left refrigerator door 201a and freezer door 202 have the same structure as a whole, and the only difference is the position and size. These doors 201a and 202 can be called panel doors or first doors.

[0071] The right refrigerator door 201b may have a structure different from the doors 201a and 202, and may have a structure capable of seeing through the rear space, i.e., the space inside the refrigerator. Therefore, the right refrigerator door 201b may be referred to as a transparent door, a perspective door, or a second door. The following description will be centered on the right refrigerator door 201b.

[0072] In addition, in one embodiment, the right refrigerator door 201b can be installed with an application display for applying Android. In this case, the right refrigerator door 201b can be equivalent to a transparent door and a display door at the same time. At this time, the right refrigerator door 201b can be called a display door.

[0073] Of course, all doors may be configured as non-transparent doors (panel doors).

[0074] Although, in this embodiment, the case of having one perspective door is described as an example, a plurality of perspective doors may be provided. Furthermore, the perspective door may also be arranged at other positions instead of the right refrigerating chamber door 201b.

[0075] The right refrigerator door 201b may include a main door and a sub-door. The main door may be rotatably mounted on the cabinet 10 and open and close the refrigerator 11 by rotating. An opening portion penetrating the main door may be formed in the main door. The opening portion may be formed to penetrate the remaining portion except the periphery of the main door, and at least a portion of the opening portion may form a portion of the storage space in the refrigerator.

[0076] The main door may be provided with a sub-door. The sub-door may be rotatably mounted on the main door and open and close the opening. In this case, the sub-door may be formed to have the same size as the main door, and the sub-door may form the front appearance of the right refrigerator door when viewed from the front.

[0077] That is, the sub-door can form the front appearance of the right refrigerator door 201b, or it can display the same color as the doors 201a and 202 according to the operation of the lighting device 36. The sub-door can also visualize the inside of the opening or the space inside the refrigerator according to the user's operation. To this end, a perspective area can be formed in the sub-door. The perspective area can appear selectively, and when the perspective area does not appear, a set color can be displayed to form the front appearance of the sub-door. The perspective area can be called a visualization part, a perspective window, a window, etc.

[0078] Although the camera of the refrigerator can be used to identify the shelf life of the stored food and display the information on the display, there is a problem that it is difficult to accurately indicate the location or status of the food.

[0079] Therefore, the present invention can associate the LED panel that displays colors through the front panel with the camera and the display panel, so as to accurately and intuitively display the exact position and detailed status.

[0080] To this end, the present invention intends to enable users to easily identify information related to the refrigerator and food through the LED panel of the refrigerator.

[0081] In addition, by using a camera, display panel, and LED panel installed in the refrigerator, the information and status of the stored food can be effectively queried and managed.

[0082] In addition, by using a camera, display panel and LED panel installed in the refrigerator, the optimal position of food placed in the refrigerator is given.

[0083] To this end, the refrigerator of the present invention is characterized in that it includes at least one panel, and in particular, four panels. It has a structure in which one of the four panels is equipped with an Android-applied display and the remaining three panels can be illuminated with color LEDs. Therefore, it is desirable to propose a technology that can input food information and expiration date information for food stored in the refrigerator through an internal / external camera or direct input by a user, and can change the color of the door panel as the expiration date approaches.

[0084] Figure 3 is a three-dimensional diagram of a refrigerator door according to an embodiment of the present invention, Figure 4 2 is a diagram showing a state where the panel assembly is separated from the refrigerator door.

[0085] Reference Figure 3 and Figure 4The door 20 may include: a door body 40, which forms the overall shape of the door 20; and a panel assembly 30, which forms the front appearance of the door 20. That is, the door 20 may be configured such that the panel assembly 30 is installed on the front of the door body 40. A mounting portion 412 for mounting the panel assembly 30 may be provided at the upper end of the front of the door body 40.

[0086] The door body 40 may include a body panel 41 forming a front surface and a door lining 42 forming a rear surface.

[0087] As an example, the body plate 41 may be formed of a metal material and formed in a plate shape having a size corresponding to the panel assembly 30. As an example, the door lining 42 may be formed of a plastic material and formed in a back surface shape of the door 20.

[0088] The door body 40 may further include side trims 44 forming left and right side surfaces of the door body 40. The side trims 44 may connect left and right side ends of the body panel 41 and left and right side ends of the door lining 42.

[0089] The door body 40 may further include an upper cap decoration 43 forming the top surface of the door body 40 and a lower cap decoration 45 forming the bottom surface of the door body 40. The upper cap decoration 43 may be connected to the upper end of the side decoration 44, the upper end of the body plate 41, and the upper end of the door lining 42. The lower cap decoration 45 may be connected to the lower end of the side decoration 44, the lower end of the body plate 41, and the lower end of the door lining 42.

[0090] The exterior appearance of the door body 40 may be formed by a body panel 41, a door lining 42, a side trim 44, an upper cap trim 43, and a lower cap trim 45. A cap trim cover 46 may be coupled to the upper cap trim 43.

[0091] The inner space of the door body 40 formed by combining the main body plate 41, the door lining 42, the side decoration 44, the upper cap decoration 43 and the lower cap decoration 45 may be filled with a heat insulating member, so as to have a heat insulating structure to prevent heat transfer through the door 20. As an example, the heat insulating member may be formed by filling a foaming liquid and then curing. The door body 40 may be provided with an injection port for filling the foaming liquid.

[0092] On the other hand, the panel assembly 30 may be inserted from the front and mounted on the front surface of the door body 40. As an example, the side trim 44 may further protrude forward and contact both side ends of the panel assembly 30.

[0093] The panel assembly 30 may be in a plate shape as a whole and may be formed in a size corresponding to the front face of the door body 40. Thus, if the panel assembly 30 is mounted to the front face of the door body 40, the panel assembly 30 may shield the front face of the door body 40 and form the front appearance of the door 20. Since the panel assembly 30 forms the front appearance of the door 20, it may be referred to as a door panel, and since it forms the front appearance of the refrigerator 1, it may also be referred to as an external panel.

[0094] When the panel assembly 30 is mounted on the door body 40, the back side of the panel assembly 30 may be closely attached to and fixed to the main body plate 41. The panel assembly 30 may have a structure that is detachable from the door body 40 for repair and maintenance.

[0095] When the panel assembly 30 is mounted on the door body 40, the front surface of the panel assembly 30 may be exposed forward and form a substantial front appearance of the door 20. The panel assembly 30 may be configured to emit light on the entire front surface and emit light of various colors.

[0096] To this end, a lighting device 36 may be provided inside the panel assembly 30. For power supply and control, the lighting device 36 may be connected to an electric wire 369.

[0097] The electric wire 369 may be composed of a plurality of wire-type electric wires and connected to the lighting device of the panel assembly 30 .

[0098] One end of the wire 369 can be connected to the lighting device 36, and the wire 369 can be introduced into the inner side of the door body 40 through the wire hole 411 formed on the front side of the door body 40, and led out to the outer side of the door body 40 through the hinge mounting portion 431 at the upper end of the door body 40. The wire hole 411 can be opened through the main body plate 41.

[0099] The upper hinge 204 may be installed on the hinge installation portion 431 , and the electric wire 369 may be guided to the housing 10 through the upper hinge 204 and connected to the control unit 13 disposed in the housing 10 .

[0100] The electric wire 369 may have a structure in which the panel assembly 30 and the door body 40 are connected by a connector. Therefore, when the panel assembly 30 is separated or attached to the door body 40, the electric wire 369 can be easily connected.

[0101] Hereinafter, the structure of the panel assembly 30 will be described in detail with reference to the drawings.

[0102] Figure 5 It is along Figure 4 The cross-sectional view of the 5-5 line, Figure 6 2 is a diagram showing the arrangement of a light guide plate and a light source.

[0103] Reference Figure 5 and Figure 6 The panel assembly 30 may include: a front plate 31 forming a front appearance; a lighting device 36 irradiating light to make the front plate 31 emit light; and a light guide plate 33 guiding the light irradiated from the lighting device 36.

[0104] The panel assembly 30 may include a diffusion member 32 that partitions the light guide plate 33 and the front plate 31 and diffuses light. From the aspect of supporting the light guide plate 33, the diffusion member 32 may be referred to as a supporting member.

[0105] The lighting device 36 and the light guide plate 33 may be mounted or supported on the diffusion member 32 .

[0106] The panel assembly 30 may further include a rear cover 39 forming a rear surface of the panel assembly 30 .

[0107] The front plate 31 may be formed in a quadrilateral plate shape, and the front plate 31 may be formed of a material that allows light to pass through. As an example, the front plate 31 may be formed of a glass material such as blue glass, white glass, and deposited glass, or other light-transmitting materials such as ABS, PMMA, and PC. The front plate 31 may also be referred to as a transparent plate or an outer plate.

[0108] The front panel 31 may be formed to be transparent so that the light reflected by the light guide plate 33 can pass through. At this time, the transparency may be defined as a degree to which the light reflected from the light guide plate can pass through and be irradiated to the outside.

[0109] The front plate 31 may be formed to have a color, and may be formed to show different colors according to the operation or on / off state of the lighting device 36. As an example, a specific texture or pattern is also printed on the front plate 31 to have a specific color. A film printed with a pattern having a specific texture or color may be attached to the front plate 31, or the front plate 31 may be subjected to surface treatment such as imprinting, etching, glass printing, or the like, or the appearance of the front plate 31 may be formed by forming a coating or deposition layer having a specific color and texture.

[0110] The front plate 31 can be configured to allow light emitted from the lighting device 36 to pass through without illuminating the structure behind the front plate 31. That is, when the lighting device 36 is turned off, the front plate 31 can prevent the structure inside the panel assembly 30 from being seen through the front plate 31 from the outside by the color of the front plate 31 itself.

[0111] At this time, the front plate 31 can be formed to have at least a color with a brightness of 0 or more that is not black when the lighting device 36 is turned off. That is, when the refrigerator 1 is installed, the front of the refrigerator 1 can be a color other than black, and the color of the front of the refrigerator can be changed according to the operation of the lighting device 36.

[0112] In the panel assembly 30, the entire front surface of the front panel 31 may be exposed to the outside. Thus, the light diffused by the diffusion member 32 may all pass through the front panel 31, so that the entire front surface of the front panel 31 may emit light.

[0113] The rear surface of the front plate 31 may be combined with the front surface of the diffusion member 32 .

[0114] Due to the diffusion member 32 , the light guide plate 33 can be located at the rear spaced apart from the front plate 31 , and can guide light irradiated from the lighting device 36 disposed below the light guide plate 33 to the front.

[0115] As an example, the light guide plate 33 may be formed of a transparent polymer material such as acrylic. A diffusing agent may be added to the light guide plate 33 to diffuse the light incident on the light guide plate 33, or a pattern for diffusing the light may be formed. Thus, the light guide plate 33 may be used to transmit light to the front plate 31, and at this time, the pattern of the light guide plate 33 may be set so that the entire front surface of the front plate 31 emits light with uniform brightness.

[0116] Below, refer to Fig.12 , various structures of the light guide plate 33 and the lighting device 36 that can be implemented in one embodiment of the present invention are once again described in detail.

[0117] The load of the light guide plate 33 can be supported by the diffusion member 32 , and the front surface of the light guide plate 33 can be pressed toward the diffusion member 32 side by the rear cover 39 .

[0118] On the other hand, a diffusion member 32 may be provided between the front plate 31 and the light guide plate 33. The diffusion member 32 can maintain a predetermined distance between the light guide plate 33 and the front plate 31 and diffuse light emitted from the light exit surface of the light guide plate 33.

[0119] The diffusion member 32 may include a plate-shaped front portion 321 to which the front plate 31 is mounted, and an extension portion extending from a periphery of the front portion 321. The front portion 321 and the extension portion may form a receiving space 320a for positioning the light guide plate 33.

[0120] The extension portion may be configured to cover the periphery of the light guide plate 33. As an example, the periphery of the light guide plate 33 may include a top surface, a bottom surface, and two side surfaces.

[0121] As an example, the extension portion may include: an upper extension portion 322 extending from the upper end of the back side of the front portion 321; a lower extension portion 324 extending from the lower end of the back side of the front portion 321; and a pair of side portions extending from the left and right side ends of the front portion 321.

[0122] The upper extension part 322 , the lower extension part 324 and the pair of side parts may form a receiving space 320 a for positioning the light guide plate 33 . Thus, the diffusion member 32 may not only diffuse light but also receive and support the light guide plate 33 .

[0123] The front portion 321 may be formed in a plate shape corresponding to the shape of the front plate 31 , and the front surface of the light guide plate 33 may be in close contact with the back surface of the front portion 321 .

[0124] According to this embodiment, the entire front portion 321 of the diffusion member 32 is disposed between the front plate 31 and the light guide plate 33. Therefore, even if the light guide plate 33 is deformed by heat, it is possible to prevent the light guide plate 33 from directly contacting the front plate 31. Therefore, it is possible to prevent dark portions such as stains from appearing on the front plate 31.

[0125] The front portion 321 and the back surface of the front plate 31 may be combined by the adhesive portion 313. As an example, the adhesive portion 313 may include a sealant or a double-sided tape.

[0126] The side surface portion may extend backward from the left and right side ends of the front portion 321 and restrict the left and right side surfaces of the light guide plate 33. The side surface portion may be separated from at least one of the left and right side surfaces of the light guide plate 33. When the light guide plate 33 moves left and right, the side surface portion may restrict the light guide plate 33 by contacting at least one of the left and right side surfaces.

[0127] The upper extension portion 322 and the lower extension portion 324 may each extend rearward from the front portion 321 , and the length of each of the upper extension portion 322 and the lower extension portion 324 may be greater than the thickness of the light guide plate 33 .

[0128] The diffusion member 32 may be formed of a material through which light can be transmitted and diffused, and the entire diffusion member 32 may be formed as a single structure by injection molding or extrusion.

[0129] The entire diffusion member 32 may be formed of a transparent or translucent material. The diffusion member 32 itself may also have a color. Thus, when the panel assembly 30 is viewed from the front, the front color, texture, or shape of the panel assembly 30 may also be determined by the diffusion member 32 .

[0130] The diffusion member 32 may further include a light guide plate support portion 326 supporting the bottom surface 333 of the light guide plate 33. The light guide plate support portion 326 may extend rearward from the back surface of the front portion 321 and be disposed above the lower extension portion 324 and spaced apart from the lower extension portion 324.

[0131] In order to stably support the load of the light guide plate 33, the diffusion member 32 may include a plurality of light guide plate support parts 326. The plurality of light guide plate support parts 326 may be arranged to be spaced apart in the horizontal direction.

[0132] The diffusion member 32 may accommodate the lighting device 36. The diffusion member 32 may include an accommodation groove 324a (or an accommodation portion) for accommodating a portion of the lighting device 36.

[0133] The receiving groove 324a may be formed as a portion of the back surface of the front portion 321 is recessed forward. The receiving groove 324a may be located between the light guide plate support portion 326 and the lower extension portion 324. Thus, if the lighting device 36 is received in the receiving groove 324a, the lighting device 36 may be located below the light guide plate support portion 326.

[0134] The lighting device 36 may include a substrate 361 and a light source 362. The substrate 361 may be formed in a plate form and may be formed long in the left-right direction.

[0135] A plurality of light sources 362 are continuously arranged at predetermined intervals on the substrate 361. The light sources 362 may be arranged to irradiate light toward the bottom surface 333 of the light guide plate 33. That is, the bottom surface 333 of the light guide plate 33 is a light incident surface, and the front surface 331 of the light guide plate 33 is a light emitting surface.

[0136] The substrate 361 may provide a space that enables the light sources 362 to be continuously arranged from the left side end to the other side end of the light guide plate 33 .

[0137] The light source 362 may be configured to face vertically below the bottom surface 333 of the light guide plate 33 , that is, the bottom surface 333 of the light guide plate 33 .

[0138] As an example, the light source 362 may be composed of an LED. The light source 362 may be composed of an RGB LED that can emit light of various colors according to the control of the control unit 13 described later. That is, the light source 362 can emit light of various colors according to the control of the control unit 13 described later, thereby the front plate 31 can emit light in the color set in the control unit 13. The color of the front appearance of the refrigerator 1 can be determined according to the color of the front plate 31.

[0139] In addition to the RGB LED, the light source 362 may also be composed of an LED that emits light of a specific color, or may be composed of a combination of a plurality of LEDs that emit light of different colors. As an example, the plurality of light sources 362 may be composed of red, green, and blue LEDs, and may be repeatedly arranged in sequence. The front panel 31 may emit light of a desired color by combining the light sources 362 under the control of the control unit 13.

[0140] The panel assembly 30 may further include a substrate support 37 disposed at the lower extension 324 of the diffusion member 32 .

[0141] The substrate support member 37 may support the substrate 361 in a state of being placed on the lower extension portion 324. The substrate support member 37 may dissipate heat generated by the lighting device 36 in a conductive manner.

[0142] A portion of the substrate support 37 may be accommodated in the accommodation groove 324a. When the rear cover 39 is assembled, the substrate support 37 may contact the rear cover 39. Thus, the heat generated by the lighting device 36 may be transferred to the rear cover 39 side through the substrate support 37 and dissipated through the rear cover 39.

[0143] The panel assembly 30 may further include a rear supporter 34 supporting the rear surface of the light guide plate 33. The rear supporter 34 may be formed in a plate shape and attached to the rear surface of the light guide plate 33 by an adhesive portion.

[0144] The rear support 34 may be formed of an opaque material through which light cannot pass. The rear support 34 may be accommodated in the accommodation space 320a formed by the diffusion member 32. The upper extension 322 may cover the upper side of the rear support 34, and the side portions 327 and 328 may cover both side surfaces of the rear support 34.

[0145] The light irradiated from the light source 362 can be effectively irradiated to the light guide plate 33 , and the light reflected by the light guide plate 33 can make the front plate 31 emit light at a set brightness.

[0146] The rear support 34 may include an opening 342 through which a portion of the rear cover 39 penetrates. The rear cover 39 may include: a cover body 391; and a bent portion extending from an edge of the cover body 391 in a horizontal direction.

[0147] The cover body 391 may be in contact with the back surface of the rear support 34. The cover body 391 may be bonded to the rear support 34 through an adhesive portion or combined with the rear support 34 through a fastening member such as a bolt.

[0148] The bent portion may extend forward from the edge of the cover body 391 and may include an upper bent portion 393, a lower bent portion 396, and a pair of side bent portions. The bent portion may contact the diffusion member 32. As an example, the bent portion may be bonded to the extension portion of the diffusion member 32 by a bonding portion.

[0149] As an example, the upper bending portion 393 may be disposed in an upper seating groove 323 having a concave shape formed in the upper extending portion 322 of the diffusion member 32 .

[0150] The lower bending portion 396 may contact the bottom surface of the lower extension portion 324 of the diffusion member 32. The side bending portion may be seated in a side seating groove having a concave shape formed in the side extension portion.

[0151] In the case of this embodiment, the diffusion member 32 supports the light guide plate 33 and fixes the position of the light guide plate 33, and the back cover 39 is combined with the diffusion member 32 to form a part surrounding the diffusion member 32. Therefore, it has the advantage of being able to reduce the number of components of the panel assembly 30 itself and reduce the thickness of the panel assembly 30 in the front-to-back direction.

[0152] The cover body 391 may further include a pressurizing portion 392 bent toward the light guide plate 33. The pressurizing portion 392 may penetrate the opening 342 of the rear supporter 34 and contact the back surface of the light guide plate 33.

[0153] In the present embodiment, the cover body 391 may pressurize the rear support 34 toward the rear surface of the light guide plate 33 while in contact with the rear surface of the rear support 34 , and the pressurizing portion 392 may directly pressurize the light guide plate 33 .

[0154] The panel assembly 30 of the present embodiment may further include a lower decoration piece 35. The lower decoration piece 35 may be combined with the diffusion member 32 by an adhesive portion or a combining mechanism such as a hook.

[0155] The lower decorative member 35 may include a first portion 351 extending in the up-down direction and a second portion 352 extending in the horizontal direction from the lower end of the first portion 351. At least the first portion 351 may be formed to be opaque or translucent, or may have a specific color as required.

[0156] The first portion 351 may cover a portion of the diffusion member 32 that extends downward from the bottom surface 311 of the front plate 31. As an example, the first portion 351 may be disposed in front of the receiving groove 324a of the diffusion member 32 to face the receiving groove 324a.

[0157] The second portion 352 may support the lower extension portion 324. The second portion 352 may include a seating groove 393 for seating the lower bending portion 396 of the rear cover 39.

[0158] Figure 7 is a block diagram showing the flow of control signals of a refrigerator according to an embodiment of the present invention, Figure 8 1 is a diagram showing a state in which a part of a door of a refrigerator in one embodiment of the present invention is illuminated. Fig. 9 The figure is a diagram showing a state where all of the plurality of doors of a refrigerator according to an embodiment of the present invention are illuminated.

[0159] In the refrigerator 1 of the embodiment of the present invention, the front surface of the door 20 can be illuminated by the operation of the lighting device 36 .

[0160] The front of the door 20 can emit light in any one of a plurality of colors according to the control of the control unit 13. The operation of the lighting device 36 can be realized by the user operating the operating unit 14. The operating unit 14 can be set on one side of the refrigerator 1, as an example, it can be set on one side of the box body 10. Of course, the operating unit 14 can also be set on the door 20 as needed, and can also be input through a touch operation of the front panel 31. That is, the user can set the operation of the lighting device 36 by directly operating the operating unit 14, and can also turn the lighting device 36 on or off.

[0161] The user can set the operating state of the lighting device 36, such as the operating time and operating conditions of the lighting device 36 and the light color of the light source 362, by operating the operating unit 14. In addition, various instructions related to the operation of the refrigerator can be input by operating the operating unit 14. The operating unit 14 can also be composed of a display that can display information and can perform operations as needed.

[0162] The operation of the lighting device 36 and the setting of the operating conditions can also be operated by the remote device 2 separated from the refrigerator 1. The refrigerator 1 can communicate with the remote device 2 using the communication unit 17 connected to the control unit 13, and the user can control the operation of the lighting device 36 through the remote device 2.

[0163] The communication unit 17 can communicate with the remote device 2 and / or the server managing the home appliance in various ways. As an example, the communication unit 17 can have a structure capable of communicating in at least one of wired, wireless, and short-range communication (Bluetooth, Wi-Fi, Zigbee, NFC, etc.). The remote device 2 can be a dedicated terminal, a mobile phone, a tablet, a portable computer, a desktop computer, a remote control, a Bluetooth speaker, and other various communicative devices.

[0164] The user can operate and set the operating state of the lighting device 36, such as the operating time, operating conditions, and light color of the light source, by operating the remote device 2. As an example, simple operation and setting can be performed by an application or dedicated program installed in the user's mobile phone.

[0165] The refrigerator 1 may further include a timer 16. The timer 16 may count the elapsed time after a specific event occurs.

[0166] On the other hand, the lighting device 36 may also operate based on the sensing result of the sensing unit 15 .

[0167] As an example, the sensing unit 15 may include a user sensing sensor for sensing the approach of a user. The user sensing sensor may use various devices capable of sensing the approach of a user to the vicinity of the refrigerator, such as an infrared sensor, an ultrasonic sensor, or a laser sensor.

[0168] The user sensing sensor may be provided on one side of the housing 10 or the door 20, and may be configured at various positions for sensing the approach of the user. A plurality of sensors may also be provided at different positions. Thus, if the user approaches a position at a reference distance from the refrigerator 1 in order to use the refrigerator 1, the user sensing sensor may sense it and transmit a signal to the control unit 13, and turn on the lighting device 36. If the user moves away from the refrigerator 1, the user sensing sensor may sense it and transmit a signal to the control unit 13, and turn off the lighting device 36.

[0169] The refrigerator may further include an output unit 19. As an example, the output unit 19 may include a speaker for outputting sound. Voice or various sounds or music may be output from the speaker. The output unit 19 may be provided on a door or a cabinet.

[0170] The speaker can be operated directly by communicating with the remote device, or can be controlled by the control unit 13. On the other hand, the operation state of the lighting device operated by the control unit 13 is described as follows. Figure 6 As shown, if the lighting device 36 is turned on according to the instruction of the control unit 13 , the light irradiated from the light source 362 may be irradiated to the bottom surface 333 of the light guide plate 33 and guided along the light guide plate 33 .

[0171] At this time, the light guided by the light guide plate 33 can be diffused through the light exit surface and the front portion 321, and then pass through the front plate 31 to the outside. As a result, the entire front plate 31 emits bright light, and the front of the door 20 can emit light at a set brightness or color.

[0172] By turning on the lighting device 36, the front of the door 20 can emit bright light, and the front of the door 20 can emit light in a set color by the light irradiated from the light source 362. At this time, the color or brightness of the front of the door 20 can be different from the color or brightness in the state where the lighting device 36 is turned off.

[0173] That is, the front color of the door 20 can be regarded as the color of the front plate 31, and the texture and pattern formed on the front plate 31 can also be seen. At this time, the color of the front plate 31 is a color with a brightness greater than 0, and can be formed in other colors except black. The color of the front of the door 20 when the lighting device 36 is turned off can also be called the first color (or background color).

[0174] Therefore, the front side of the door 20 is displayed with the color of the front plate 31. At this time, due to the color of the front plate 31, the internal structure of the panel assembly 30 cannot be seen through the front plate 31 from the outside.

[0175] In the above-described state, the lighting device 36 may be turned on. If the lighting device 36 is turned on, the front surface of the door 20 may emit light in the color set in the control unit 13 .

[0176] The front side of the door 20 may be controlled to emit light in a second color different from the first color, and the lighting device 36 may control the light source 362 according to the control of the control unit 13 so that the door 20 can emit light in the second color.

[0177] At this time, the color irradiated from the light source 362 may be different from the second color. That is, since the front plate 31 includes the first color, if the second color light is irradiated from the light source 362, the light may interact with the first color in the process of passing through the front plate 31, so that the door 20 may substantially emit light in the third color.

[0178] Therefore, in this embodiment, controlling the light source 362 to emit light of a specific color from the door 20 may mean controlling the color emitted from the light source 362 by taking into account the color of the actual front panel 31 itself.

[0179] That is, in a state where the light source 362 is turned on, the color of the light emitted from the door 20 may be a color in which the own color of the front panel 31 and the color of the light irradiated from the light source 362 are mixed.

[0180] On the other hand, the front appearance of the refrigerator 1 may be formed by illuminating a portion of the plurality of doors 20 forming the front appearance of the refrigerator 1, or the front appearance of the refrigerator 1 may be formed in a set color by independently illuminating a plurality of doors 20.

[0181] The refrigerator 1 can be operated so that a part of the doors 20 among the plurality of doors emit light or emit light in a specific color. That is, it can also be configured so that only a part of the doors 20 emit light, rather than all the lighting devices 36 provided on the doors 20 operate. As an example, any one of the refrigerator compartment doors 201 can emit light.

[0182] As required, the left refrigerator door and the right refrigerator door can emit light in different colors. The colors of at least two of the doors 20 can change in sequence, and at least two of the doors 20 can also be opened and closed in sequence.

[0183] At this time, the lighting device 36 provided in the panel assembly 30 may be controlled by the control unit 13 according to the aforementioned various conditions.

[0184] On the other hand, the refrigerator compartment door or the freezer compartment door among the doors may be controlled to emit light in colors different from each other.

[0185] The control unit 13 may control the lighting device 36 so that the pair of refrigerator compartment doors 201 are in a first color. The control unit 13 may control the lighting device 36 so that the pair of refrigerator compartment doors 201 are in a second color.

[0186] On the other hand, the operation control of the lighting device 36 described below is not limited by the structure of the panel assembly or the structure of the door. That is, one or more of the multiple components constituting the panel assembly may be omitted, or one or more of the multiple components may be replaced by other components, or the position of one or more of the multiple components may be changed.

[0187] In the present specification, the state change of the light source 362 may include one or more of the following: the light source 362 changes from an off state to an on state, the light source 362 changes from an on state to an off state, one or more LEDs are turned on when the light source 362 is off, the light source 362 is turned off when more than one LED is on, the brightness of the light emitted from the light source 362 changes when the light source 362 is on, the brightness or color of the light emitted from some of the multiple LEDs changes when the light source 362 is on, the number of LEDs turned on changes (the number of LEDs turned on increases or the number of LEDs turned on decreases), and the color of the light emitted from the light source 362 changes when the light source 362 is on.

[0188] The state in which the light source 362 is turned on indicates that all the plurality of LEDs are turned on, and the state in which the light source 362 is turned off indicates that all the plurality of LEDs are turned off.

[0189] Fig.10 and Fig.11 FIG. 1 is a diagram for explaining a display door with a transparent display panel according to an embodiment of the present invention.

[0190] like Figure 1 and Figure 2 As described in the description, the right refrigerator door 201b of the refrigerator can be installed with an Android-enabled display, and the Android-enabled display can use a transparent display panel that can switch between a transparent mode, a semi-transparent mode, and an opaque mode.

[0191] Fig.10 The left side drawing of shows an embodiment in which the display panel included in the display door operates in an opaque mode. Fig.10 The right-hand drawing of shows an embodiment in which the display panel included in the display door operates in a transparent mode.

[0192] like Fig.10 As shown in the left figure, when the display panel operates in opaque mode, since the display door operates with Android display, various user interfaces can be output on the display panel.

[0193] On the other hand, Fig.10 As shown in the figure on the right side of the refrigerator, when the display panel operates in transparent mode, the user can confirm the interior of the refrigerator through the display door.

[0194] Fig.11 (a) is a diagram for explaining the transparent mode. Fig.11 (b) is a diagram for explaining the semi-transparent mode. Fig.11 (c) is a diagram for explaining the opaque mode. Fig.11 (d) is a diagram for explaining the light-off mode.

[0195] Fig.11 The display panel 1100 may include an outermost LCD panel 1101, an LCD backlight module 1102, and an internal LED 1103. Here, the LCD backlight module 1102 may be located at the rear side of the LCD panel 1101 and emit light. In addition, Fig.11 The internal LEDs 1103 are shown to be located at the left and right ends of the display panel 1100 , but this is only an example and may be illustrated differently in subsequent drawings.

[0196] like Fig.11 (a), in order to operate in the transparent mode, the display panel 1100 may turn on only the internal LED 1103 .

[0197] In addition, if Fig.11 (b), in order to operate in the semi-transparent mode, the display panel 1100 can turn on all the LCD backlight module 1102 and the internal LED 1103. At this time, the display panel 1100 can operate in the semi-transparent mode by adjusting the brightness of the LCD backlight module 1102 and the internal LED 1103.

[0198] In addition, if Fig.11 (c) , in order to operate in the opaque mode, the display panel 1100 may only turn on the LCD backlight module 1102 .

[0199] Finally, if Fig.11 In (d), in order to operate in the light-off mode, the display panel 1100 may turn off the LCD backlight module 1102 and the internal LED 1103. As a result, the image being outputted on the display panel 110 is hardly visible.

[0200] Fig.12 This is a diagram for explaining the positions of the light guide plate and the light source of the LED door according to one embodiment of the present invention.

[0201] Fig.12 (a) to Fig.12(d) is a diagram showing the front side of the door of the refrigerator having a light source. In particular, Fig.12 (a) to Fig.12 (d) represent doors with different light source locations. Fig.12 (a) to Fig.12 In (d), the configuration of the light source is mainly described. In order to guide the light output from the light source, the front plate and the light guide plate are of course included, and since Figure 6 It has been explained in , so it is omitted.

[0202] In more detail, Fig.12 (a) represents an embodiment in which the light source is located at the lower edge. Fig.12 (b) represents an embodiment in which the light source is located at the side edge, Fig.12 (c) represents an embodiment in which the light source is located at the lower and side edges, Fig.12 (d) represents the embodiment that the position of the light source is perpendicular to the front plate of the door. Here, the position of the light source is only an example, and the position of the light source can certainly be located at the upper edge or the right side.

[0203] Therefore, in Fig.12 In (a), since the light source is located at the lower edge, if light is irradiated from the light source, the light guide plate (not shown) can transmit the light irradiated from bottom to top to the front plate. Fig.12 As shown in (a), the control unit of the refrigerator can only turn on a part of the light sources 1201 of the plurality of light sources 1200 disposed at the lower edge. In this case, from the user's visual point of view, only the first area 1202 is illuminated in the first color instead of the entire door.

[0204] Similarly, in Fig.12 In (b), since the light source is located at the side edge, if light is irradiated from the light source, the light guide plate can transmit the light irradiated from the left side to the right side to the front plate. Fig.12 As shown in (b), the control unit of the refrigerator can only turn on a part of the light sources 1204 of the plurality of light sources 1203 disposed on the left side. In this case, from the user's visual point of view, only the second area 1205 is in the second color, rather than the entire door emitting light.

[0205] like Fig.12 (c), when all the light sources are located at the lower edge and the left side edge, may include Fig.12 (a) and Fig.12In one embodiment, the control unit of the refrigerator can make a part of the light sources 1201 of the light sources 1200 located at the lower edge and a part of the light sources 1204 of the light sources 1203 located at the left side output light of different colors. In this case, from the user's visual point of view, different colors are output from the third area 1206, the fourth area 1207, and the fifth area 1208.

[0206] Finally, if Fig.12 (d), the light source can be located perpendicular to the front panel. That is, the light source is located perpendicular to the door and irradiates light in the z-axis direction, rather than being located below or to the side of the door and irradiating light in the x-axis direction or the y-axis direction. This can be called a direct type structure.

[0207] In one embodiment, the control unit of the refrigerator can independently control the light source located on the front of the door, so that different colors are output from the sixth area 1209, the seventh area 1210, and the eighth area 1211. Thus, the user can see that different colors are output from the sixth area 1209, the seventh area 1210, and the eighth area 1211.

[0208] in addition, Fig.12 (a) to Fig.12 The light source shown in (d) is characterized in that it is LED lighting capable of outputting RGB colors.

[0209] Thus, the refrigerator of one embodiment of the present invention can form various lighting effects according to the light source configuration. In addition, it has the advantage of being able to use the various lighting effects to display various information related to the refrigerator. The following is a detailed description of an embodiment of displaying various information.

[0210] Fig.13a and Fig.13b 1 is a diagram for explaining a method for identifying food in a refrigerator according to an embodiment of the present invention.

[0211] That is, in order to display various information related to the refrigerator by changing the color of the LED door according to the above-mentioned embodiment, the refrigerator needs to preferentially recognize information on food entering the inside of the refrigerator.

[0212] Fig.13a Indicates the actual user usage scenario. Fig.13a Flowchart showing refrigerator identification of food.

[0213] Reference Fig.13a, the user 1301 can approach the refrigerator 1300 with food 1302. In one embodiment, the display door 1303 as the upper door on the right side of the refrigerator can include a front camera 1304. The front camera 1303 can sense that the user 1301 is approaching the refrigerator 1300 with food 1302.

[0214] In one embodiment of the present invention, the refrigerator 1300 may include a front camera 1304 on the display door 1303, and at least one of the first door 1305, the second door 1306 and the third door 1307 includes a camera 1308, and may include an internal camera 1309 for photographing the interior of the refrigerator.

[0215] At this time, the refrigerator 1300 may include a camera for photographing food, and at least one camera may be included in the display door 1303 , the first door 1305 , the second door 1306 , the third door 1307 and the inside of the refrigerator 1300 .

[0216] That is, in Fig.13a In the embodiment, although a front camera 1304 provided on the display door 103, a door camera 1308 provided on the first door 1305, and an internal camera 1309 provided inside the refrigerator compartment corresponding to the third door 1307 are shown, this is just an option, and a camera for photographing food may be selectively provided.

[0217] Afterwards, the refrigerator according to an embodiment of the present invention can be Fig.13b The process of identifying food.

[0218] Reference Fig.13b In step S1310, the refrigerator can recognize the user's approach through a front camera set on the display door.

[0219] In step S1311, the refrigerator can determine whether the user is holding food from the image recognized by the front camera. At this time, the display door of the refrigerator can include a front camera. Here, if the user does not hold food, the process ends.

[0220] In the case where the user is holding food in the image recognized by the camera, the refrigerator may perform a food recognition function through the display door in step S1312.

[0221] In step S1313, the refrigerator may determine whether the user has opened one of the refrigerator doors. The refrigerator of one embodiment of the present invention may include a display door to which Android is applied and three LED doors having LEDs as light sources. The refrigerator may determine whether the user has opened any one of the display door, the first door, the second door, and the third door.

[0222] If the user does not open the refrigerator door, step S1317 can be executed.

[0223] In the case where the user opens the refrigerator door, it can be confirmed in step S1314 whether the user puts food into the refrigerator compartment of the opened door without food recognition and closes the door.

[0224] When the user puts food into the refrigerator compartment with the opened door and closes the door without food recognition, the food may be photographed by a camera in the refrigerator compartment in step S1315.

[0225] When the user puts food into the refrigerator compartment of the opened door without food identification and does not close the door, the food can be photographed by the camera of the opened door in step S1316. That is, in one embodiment of the present invention, a front camera is provided on the display door, so that it can confirm whether the user is approaching, whether the user is holding food, and information about the food. In addition, cameras that can photograph food in an open state are provided on each door, and a camera is also provided inside the refrigerator, so that the food in the refrigerator can be photographed.

[0226] In step S1317, the refrigerator can use the front camera to photograph the food that the user is holding without the user opening the refrigerator door.

[0227] If food is photographed through steps S1315 to S1317, the refrigerator can extract information about the food from the photographed image in step S1318. Here, the information about the food can include the name of the food and the shelf life information of the food.

[0228] In step S1319, the refrigerator may display information on the extracted food on the display panel of the display door. Thereafter, the refrigerator may receive a user input from the user as to whether the information on the food displayed on the display panel is accurate.

[0229] In step S1320, as to whether the information on the food displayed on the display panel is accurate, if the user inputs confirmation, step S1322 can be executed, and if the input is inaccurate, step S1321 can be executed.

[0230] If the user confirms that the image is inaccurate, the camera can be used to take another photo of the food in step S1321. At this time, the camera in steps S1315 to S1317 can be used to take another photo of the food.

[0231] In addition, in the case where the user still determines that the information on the food is inaccurate despite repeatedly executing step S1320 and step S1321, the user may directly input the information on the food through the display panel.

[0232] When the user confirms that the food information output to the display panel is accurate, the door through which the user put the food in the refrigerator and opened it can be identified in step S1322, and the location where the food was placed can be identified using the camera inside the refrigerator of the door.

[0233] In step S1323, the information on the food and the location in the refrigerator may be stored in a food database.

[0234] The following embodiments can be based on Fig.13a and Fig.13b The identified food information and location in the refrigerator are explained.

[0235] Fig.14 1 is a diagram for explaining a food management user interface of a refrigerator according to an embodiment of the present invention.

[0236] Since the refrigerator 1400 according to an embodiment of the present invention includes a display door having a display panel 1401 that can output content, various information can be output through the display panel 1401.

[0237] Therefore, the present invention is to provide a food management user interface that matches the structure of the refrigerator storage compartments so that it is easy to understand and can grasp the status of the food and the storage quantity of each storage compartment at a glance.

[0238] That is, you can Fig.14 As shown in (b), the food management user interface is output on the display panel 1401 as shown in Fig.14 (a) The actual configuration and size of the food doors and food storage compartments of the refrigerator 1400.

[0239] In more detail, Fig.14 The food management user interface of (b) can distinguish and output the door compartments 1402a, 1402b, 1402c, 1402d of the refrigerator 1400 and the storage compartments 1403a, 1403b, 1403c, 1403d of the refrigerator 1400. This reflects that users usually use the upper door compartments 1402a, 1402b and the storage compartments 1403a, 1403b of the refrigerator 1400 for refrigerated food, and use the lower door compartments 1402c, 1402d and the storage compartments 1403c, 1403d of the refrigerator 1400 for frozen food.

[0240] In one embodiment, the refrigerator 1400 can display the shelf life information 1404 of the food, the image 1405 of each food, and the food storage quantity 1406 of the compartment storing the food through the food management user interface 1401.

[0241] To this end, the refrigerator 1400 may use an indicator 1405 to indicate at least one food item in the door compartments 1402a, 1402b, 1402c, 1402d and the storage compartments 1403a, 1403b, 1403c, 1403d. Fig.14 In the embodiment of the embodiment, a circular indicator 1405 is shown. In other embodiments, the refrigerator 1400 can use an image to represent food. Here, the image can correspond to an actual image that has been taken or an imaged virtual image.

[0242] In addition, the refrigerator 1400 can output the shelf life information 1404 of the food through the food management user interface 1401. In one embodiment, the refrigerator 1400 can output the shelf life information 1404 of the food in different colors. According to the above embodiment, since the shelf life information for the food is stored in the database, the refrigerator 1400 can judge the food that is close to the shelf life and the food that has exceeded the shelf life by comparing with the current date.

[0243] Thus, the refrigerator 1400 can output indicators of food that is close to its expiration date or food that has exceeded its expiration date in different colors. For example, the refrigerator 1400 can output an indicator 1404 of food that is close to its expiration date in yellow, and an indicator 1404 of food that has exceeded its expiration date in red. Therefore, the user can directly know which food in which compartment is close to its expiration date, and which food in which compartment has exceeded its expiration date.

[0244] In addition, the refrigerator 1400 may display the food storage amount 1406 of the storage compartment. Here, the food storage amount 1406 may be output as an indicator 1406 in the form of a progress bar. More specifically, the food storage amount 1406 may be equivalent to a percentage (%) value obtained by dividing the amount of food stored in the door compartments 1402a, 1402b, 1402c, 1402d and the storage compartments 1403a, 1403b, 1403c, 1403d by each compartment.

[0245] For example, when the amount of food stored in the upper right door compartment 1402b of the refrigerator 1400 is 80%, the refrigerator 1400 may notify the user through the storage amount indicator 1406. At this time, the storage amount indicator 1406 may display 80%.

[0246] That is, through the food management user interface 1401 output to the display panel 1401, the user can intuitively know the expiration date information of the food and the amount of food stored in each compartment.

[0247] Fig.15a and Fig.15b1 is a diagram for explaining an embodiment of changing the door color based on the freshness of food in a refrigerator according to an embodiment of the present invention.

[0248] Reference Fig.15a (a), the refrigerator 1500 can identify food by at least one camera 1500a, 1500b, 1500c, 1500d included in the refrigerator 1500, and store the location and shelf life information of the food in the database according to the above embodiment. Here, the location of the at least one camera 1500a, 1500b, 1500c, 1500d is only an example, and it can be set at other locations for accurately grasping the location of the food.

[0249] Reference Fig.15a (b), the refrigerator 1500 may change the color of at least one of the first door 1501 , the second door 1502 , and the third door 1503 based on the shelf life of the food stored in the refrigerator 1500 .

[0250] In more detail, when the first door 1501 stores food with a first period (e.g., one week) or more of shelf life remaining, the refrigerator 1500 may change the first door 1501 to a first color (e.g., green). This is a case where the control of the refrigerator 1500 sets the light output from the light source at the lower end of the first door 1501 to green. For this, please refer to the aforementioned drawings.

[0251] In addition, when the second door 1502 stores food whose remaining shelf life is less than the first period, the refrigerator 1500 can change the second door 1502 to a second color (for example, yellow).

[0252] Likewise, when the third door 1503 stores food that has exceeded its shelf life, the refrigerator 1500 may change the third door 1503 to a third color (eg, red).

[0253] In one embodiment, the refrigerator 1500 can change the first period, the first color, the second color, and the third color according to the user's setting. In addition, the first period, the first color, the second color, and the third color can be determined and shipped during manufacturing.

[0254] That is, the door of the compartment storing food approaching the expiration date can be changed to a caution color, and the door of the compartment storing food exceeding the expiration date can be changed to a warning color. Thus, the user can easily grasp the expiration date information.

[0255] In addition, in one embodiment, the location of food that is close to or has exceeded its expiration date may be more specifically indicated. Fig.15a(c), when the third door 1503 stores food that has exceeded its shelf life, the refrigerator 1500 may only change the color of the area where the specific food is located. That is, when the first position 1504 of the third door 1503 stores food that has exceeded its shelf life, the refrigerator 1500 may change the color of the third door 1503 to the first color and the color of the first position 1504 to the third color.

[0256] In addition, if only the color of the door is changed, the user cannot reliably know whether the food that has exceeded the shelf life is in the door compartment or in the storage compartment. Fig.15a (d) In the case where the first door 1501 stores food that has exceeded its shelf life, the refrigerator 1500 can Fig.15a (c) changes the overall color of the first door 1501 to the first color, and changes the color of the second position 1505 to the third color.

[0257] Thereafter, when the food exceeding the expiration date is stored in the door compartment of the first door 1501, the refrigerator 1500 may output an indicator that flashes once at the second position 1505 of the first door 1501. Conversely, when the food exceeding the expiration date is stored in the storage compartment of the first door 1501, the refrigerator 1500 may output an indicator that flashes twice at the second position 1505 of the first door 1501. This output of a flashing indicator may be applied to a case where the light source is a direct type structure.

[0258] In addition, refer to Fig.15b (a), when the food that has exceeded its shelf life is located at the second position 1505 of the first door 1501, the refrigerator 1500 can output light of a darker color at the second position 1505 as the time after the food exceeds its shelf life increases.

[0259] like Fig.12 As described in the embodiment of the present invention, the position of the light source of the door of the refrigerator 1500 can be configured in one of the following structures: lower edge type, side edge type, lower and side edge type, and direct type. Thus, the refrigerator 1500 can output different colors only in a part of the area by adjusting the light source. Fig.15b In addition, Fig.15b (b) to Fig.15b In (d), it is assumed that the food that has exceeded its shelf life is located at the second position 1505 of the first door 1501 of the refrigerator 1500.

[0260] Fig.15b (b) is a diagram showing the location of food that has exceeded its shelf life when a side edge light source structure is used. Fig.15b (c) is a diagram showing the location of food that has exceeded its shelf life when the lower and side edge-type light source structures are used. Fig.15b (d) is a diagram showing the location of food that has exceeded its shelf life when a direct light source structure is used.

[0261] In addition, if Fig.14 As described above, the display door including the display panel in the refrigerator 1500 can output the food management user interface instead of the door including the LED light source. The description of this will be omitted.

[0262] Fig.16a and Fig.16b This is a diagram for explaining an example of a recommended position for providing food in a refrigerator according to an embodiment of the present invention. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted.

[0263] At this time, it is assumed that the user terminal 1600 and the refrigerator 1601 are in a state of being connected to each other. In addition, the user can request an optimal location of food through the user terminal 1600.

[0264] In more detail, the user terminal 1600 can input information about food to be put into the refrigerator 1601 in advance through the application in a state where the user terminal 1600 is connected to the refrigerator 1601. Fig.13a and Fig.13b However, Fig.13a and Fig.13b Alternatively, the user may input information about food through a camera (not shown) of the user terminal 1600 and transmit the information to the refrigerator 1601 through an application.

[0265] In an embodiment of the present invention, at least one of the user terminal 1600 and the refrigerator 1601 may provide the user with an optimal location of food based on the received information on the food.

[0266] For more details, refer to Fig.16a In the first figure, the user terminal 1600 can display the information about the food on the display and output the appropriate storage location 1602 in the refrigerator 1601.

[0267] At this time, the optimal storage location or appropriate storage location of the food can be determined based on at least one of the temperature of each compartment of the refrigerator 1601, the crowdedness of each compartment, whether there are similar foods in the compartments of the refrigerator 1601, the smell or characteristics of the food to be put in, the smell or characteristics of the existing food in the refrigerator 1601, and the freshness of the food. This can be determined by the user terminal 1600 through an algorithm, or by receiving the result of the algorithm determined by the refrigerator 1601, or by receiving it from other connected external servers.

[0268] The user terminal 1600 may transmit the optimal position of the food to the refrigerator 1601 as it receives the signal of the icon 1602 for selecting the optimal position for storage. At this time, as described above, the user terminal 1600 transmits the optimal position of the food to the refrigerator 1601 when determining the optimal position of the food, but the refrigerator 1601 may also determine the optimal position of the food by itself.

[0269] Reference Fig.16a In the second figure, the refrigerator 1601 can output the determined optimal position of the food to a portion of the display door and the LED door 1604.

[0270] In more detail, when the optimal position of the food is determined to be the third compartment from the top of the first door, the refrigerator 1601 can indicate through the food management user interface on the display panel 1603 of the display door that the food is most suitable for storage in the third compartment from the top of the first door.

[0271] In addition, the refrigerator 1601 can inform the user that the food is most suitable to be placed in the position by turning on the light of the LED located in the third compartment from the top of the first door.

[0272] When the user opens the door of the refrigerator 1601 and arranges the food, refer to Fig.16a 16, the refrigerator 1601 may present the interior of the refrigerator 1601 to the user by switching the display panel 1603 to a transparent mode.

[0273] The following describes a case where the user does not store food in a suitable location.

[0274] Reference Fig.16b In the first figure, the refrigerator 1601 can identify the location of the food in the refrigerator 1601 through at least one camera in the refrigerator 1601. In one embodiment, the refrigerator 1601 can analyze the information about the food when the food enters the refrigerator, analyze the environmental change information of the current compartment, and analyze the environmental change information of the surrounding compartments. At this time, the display panel 1603 can correspond to the transparent mode.

[0275] In the case where the analysis result indicates that the position of the food needs to be changed for the optimal / proper position of the food, the refrigerator 1601 can provide a notification to the user using the display panel 1603 and the light source of the door. Fig.16b The second figure shows an embodiment in which it is recommended to move food A present in the display door compartment to the second door compartment, Fig.16b The third figure shows an embodiment in which it is recommended to move the B food present in the first door compartment to the display door compartment.

[0276] For more details, refer to Fig.16bIn the second figure, the refrigerator 1601 may switch the display panel 1603 to the semi-transparent mode when it is determined that it is more suitable to move the food A in the compartment of the display door to the compartment of the second door. After that, the refrigerator 1601 may output an indicator 1604 indicating the food A on the display panel 1603, and may also output a first arrow indicator 1605 pointing to the optimal position. In addition, the refrigerator 1601 may output a text "It is better to keep the food A frozen" on the display panel 1603. This is because the second door is a compartment suitable for keeping frozen food.

[0277] In addition, in one embodiment, the refrigerator 1601 can turn on the light source corresponding to the first compartment 1606 of the second door where the optimal position of food A is located. Thus, the user can know that the optimal position of food A is the first compartment 1606 of the second door, not the display door compartment.

[0278] As another example, refer to Fig.16b In the third figure, the refrigerator 1601 may turn on the light source corresponding to the second compartment 1607 of the first door when it is determined that it is more appropriate to move the food B in the second compartment 1607 of the first door to the compartment of the display door. After that, the refrigerator 1601 may switch the display panel 1603 to a semi-transparent mode and output an indicator 1608 indicating the optimal position of the food B on the display panel 1603. Similarly, the refrigerator 1601 may also output a second arrow indicator 1609 pointing to the optimal position of the food B. In addition, the refrigerator 1601 may also output a text "It is better to keep the food B here" on the display panel 1603.

[0279] Thus, the user can know that the compartment of the display door indicated by the indicator 1608 and the second arrow indicator 1609 is a location more suitable for B food than the second compartment 1607 of the first door.

[0280] Fig.17 This is a diagram for explaining an updated embodiment of a refrigerator according to an embodiment of the present invention, depending on whether to take out food. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted.

[0281] Reference Fig.17 (a), as described above, the refrigerator 1700 can output the food and shelf life information of the current refrigerator through the product management user interface on the display door 1701, and notify the user of the food stored in the compartment of the first door 1702 and the shelf life information of the food by turning on the light source corresponding to the first door 1702.

[0282] At this time, the refrigerator 1700 can indicate the position 1704 of the first food 1703 near the expiration date with the first color. Afterwards, when the first food 1703 is led out of the refrigerator 1700, the refrigerator 1700 can update the inventory in the refrigerator 1700 through the internal camera.

[0283] In addition, when the refrigerator 1700 is connected to the cooking appliance 1705, the refrigerator 1700 can receive the cooking result of the food from the cooking appliance 1705. In more detail, the refrigerator 1700 and the cooking appliance 1705 can send and receive information to each other through the same network such as WiFi. When the cooking appliance 1705 cooks the first food 1703 taken out of the refrigerator 1700, the cooking appliance 1705 can transmit the cooking result of the first food 1703 to the server connected to the refrigerator 1700 and update it to the refrigerator 1700.

[0284] Reference Fig.17 (b), after cooking is completed, when the user approaches the refrigerator 1700, the refrigerator 1700 can output an updated food management user interface through the display panel 1701 and display the position 1704 of the first food of the first door 1702 in the second color.

[0285] In addition, when the first food 1703 is all taken out and there is no stock, the refrigerator 1700 may output a pop-up window 1705 through the display panel 1701. Here, the pop-up window 1705 may output information received from the server.

[0286] For example, the first food 1703 may correspond to food ordered regularly or automatically. In this case, the refrigerator 1700 may output a first pop-up window 1705a on the display panel 1701.

[0287] Here, since the first food 1703 is a food ordered regularly or automatically, the first pop-up window 1705a can output a "close" icon and a "view order history" icon together with text indicating that the regular delivery order has been completed. Here, if the user selects the "view order history" icon, the refrigerator 1700 can provide the order history for the first food 1703 received from the server through the display panel 1701.

[0288] As another example, the first food 1703 may not correspond to food ordered regularly or automatically. In this case, the refrigerator 1700 may output a second pop-up window 1705b on the display panel 1701.

[0289] Here, since the first food 1703 is not a food that is ordered regularly or automatically, the second pop-up window 1705b can output "Add now" and "Regular / Automatic Order" icons together with text indicating that regular or automatic ordering is recommended. Here, if the user selects the "Add now" and "Regular / Automatic Order" icons, the refrigerator 1700 can add the first food 1703 to the shopping cart through an application linked to the refrigerator 1700, or provide a regular or automatic ordering service.

[0290] As another example, the refrigerator 1700 may not know whether the first food 1703 is cooked or not. In this case, the refrigerator 1700 may output the third pop-up window 1705c on the display panel 1701.

[0291] Here, without knowing whether the first food 1703 is cooked or not, the refrigerator 1700 can confirm with the user through the third pop-up window 1705c whether to update the inventory of the first food 1703. That is, the third pop-up window 1705c can include a "close" icon and an "inventory update" icon. When the user selects the "inventory update" icon, the refrigerator 1700 can manually perform the inventory update for the first food 1703.

[0292] Fig.18 This is an example for explaining an example of outputting notifications of various locations based on an event occurring in a refrigerator according to an embodiment of the present invention. Hereinafter, descriptions repeated with the above-mentioned example will be omitted.

[0293] Reference Fig.18 The refrigerator 1800 may include: a display door including a display panel 1801; and a first door 1802, a second door 1803, and a third door 1804, which can output light in a part of the area using an LED light source.

[0294] In an embodiment of the present invention, the refrigerator 1800 may inform the hygienic status of each refrigerator compartment and whether the food is exhausted through at least one of the display panel 1801 , the first door 1802 , the second door 1803 , and the third door 1804 .

[0295] In more detail, the refrigerator 1800 can confirm the sanitary status of each compartment in the refrigerator and whether the food is exhausted through an internal camera (not shown).

[0296] For example, when the first food stored in the first compartment 1805 of the third door 1804 is moldy, the refrigerator 1800 can notify through the display panel 1801 that the first food stored in the first compartment 1805 of the third door 1804 is sensed to be moldy. In addition, the refrigerator 1800 can emit light of the first color in the first compartment 1805 of the third door 1804 by irradiating the first color (e.g., black) associated with mold from a light source to the first compartment 1805 of the third door 1804.

[0297] In addition, as another example, when the inventory of the second food stored in the second compartment 1806 of the first door 1802 changes, the refrigerator 1800 can notify the inventory of the second food stored in the second compartment 1806 of the first door 1802 through the display panel 1801. In addition, the refrigerator 1800 can provide an ordering service for the second food when the second food is a regular / automatic order delivery food. In addition, the refrigerator 1800 can emit a second color of light in the second compartment 1806 of the first door 1802 by irradiating the second color related to the second food (for example, yellow when the second food is eggs) from a light source to the second compartment 1806 of the first door 1802.

[0298] In addition, as another example, when the ice cubes in the third compartment 1807 of the second door 1803 are all consumed, the refrigerator 1800 can notify the third compartment 1807 of the second door 1803 that the ice cubes are all consumed through the display panel 1801. In particular, the refrigerator 1800 can notify the replenishment of water when the ice cubes are all consumed. At this time, the refrigerator 1800 can emit a third color (e.g., blue) related to the ice cubes from the light source to the third compartment 1807 of the second door 1803, so that the third compartment 1807 of the second door 1803 emits light of the third color.

[0299] Fig.19a and Fig.19b This is a diagram for explaining an embodiment of guiding the location of food in a refrigerator by face recognition according to an embodiment of the present invention. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted.

[0300] Reference Fig.19a (a), the refrigerator 1900 can recognize at least one face through the front camera, and match the corresponding name to the recognized face and store it in the database.

[0301] In more detail, the refrigerator 1900 can recognize at least one face through the front camera included in the display door, receive the name corresponding to the recognized face through the display panel 1901, and store them in the database after matching.

[0302] For example, in a family of six, refrigerator 1900 can identify grandmother's face, mother's face, father's face, grandfather's face, daughter's face, and son's face through the front camera, and can receive the name corresponding to each face through the display panel 1901, and store the faces and names in the database after matching them.

[0303] Reference Fig.19a (b), the refrigerator 1900 can run a memo application through the display panel 1901. Afterwards, the refrigerator 1900 can receive a name 1903 corresponding to the first face 1902 and location information 1904 for food through the memo application. Here, the first face 1902 is based on Fig.19a (a) Pre-registered faces.

[0304] At this time, the refrigerator 1900 can receive the name 1903 and the food information 1904 corresponding to the first face 1902 by using a preset drawing pen or inputting in a specific color. For example, the name 1903 can be received by inputting in green, and the food information 1904 can be received by inputting in pink. Thus, the refrigerator 1900 can know that the name 1903 and the food information 1904 inputted into the memo application are not simple memos but keywords.

[0305] In one embodiment, when receiving the information 1904 for food, the refrigerator 1900 can search for the information 1904 for the food from a camera inside the refrigerator 1900 or a pre-stored database, and change the color of the door compartment where the food is located. Fig.19b Provide a detailed description.

[0306] Reference Fig.19b (a), when the first face 1902 is detected by the front camera 1905 of the display door, the refrigerator 1900 can be as follows Fig.19b (b) changes the color of the door compartment 1905 corresponding to the food information 1904.

[0307] In more detail, when the first face 1902 is the face of the pre-registered son, and the information 1904 for food is strawberries, the refrigerator 1900 can know through the above embodiment that the strawberries are located in the first compartment 1905 of the first door. Thus, when the pre-registered son's face is sensed through the front camera 1905, the refrigerator 1900 can turn on the pink light of the light source corresponding to the first compartment 1905 of the first door where the strawberries are located. Here, the refrigerator 1900 can make the pink light of the light source corresponding to the first compartment 1905 of the first door flash.

[0308] Thus, even if the user (son) does not put the food in personally, he can directly know the location of the food. That is, the refrigerator 1900 is a device used by all family members, so the person who puts in the food and the person who takes out the food may be different. If the refrigerator 1900 can store information about the food and inform the location of the food by changing the color of the door, the location of the food can be easily known even if the person who puts in the food and the person who takes out the food are different.

[0309] Fig. 20 This is a diagram for explaining an embodiment of irradiating light to a portion that has been impacted in a refrigerator according to an embodiment of the present invention.

[0310] In one embodiment of the present invention, when a specific part of the refrigerator 2000 is subjected to a large impact, a light source corresponding to the part can be turned on, so that the user knows the part of the refrigerator 2000 that is subjected to the impact.

[0311] Reference Fig. 20 , the refrigerator 2000 may turn on the light source corresponding to the impacted position 2002 of the third door 2001 when the third door 2001 is impacted. In one embodiment, the refrigerator 2000 may be set such that the greater the intensity of the impact, the higher the saturation of the light source corresponding to the impacted position 2002, and the greater the number of light sources turned on. For example, when the intensity of the impact is a first intensity, the refrigerator 2000 may output the color of the light source corresponding to the impacted position 2002 in yellow, and when the intensity of the impact is a second intensity greater than the first intensity, the refrigerator 2000 may output the color of the light source corresponding to the impacted position 2002 in red.

[0312] The lower end of the refrigerator 2000 is a part that a child may bump into when walking or accidentally kick. In this case, if a child kicks the third door 2001 of the refrigerator and walks away, the parents cannot know this afterwards. Since important food may be stored at the lower end of the refrigerator 2000, the refrigerator 2000 can inform this by changing the color of the door.

[0313] Fig.21 1 is a diagram for explaining an embodiment of running a game application in a refrigerator according to an embodiment of the present invention.

[0314] Reference Fig.21 , the refrigerator 2100 may output the game application 2102 through the display panel 2101. Here, the game application 2102 may correspond to the touch game application 2102 of the embodiment utilizing the color of the door of the refrigerator 2100 to be changed.

[0315] The refrigerator 2100 may output the game application 2102 through the display panel 2101 , and turn on lights of light sources corresponding to the first door, the second door, and a portion of the third door based on a color output by the game application 2102 .

[0316] In more detail, in the game application 2102, a first indicator, a second indicator, a third indicator, and a fourth indicator may be output. At this time, the refrigerator 2100 may output a first color corresponding to the first indicator in a first area of ​​one of the first to third doors. Similarly, the refrigerator 2100 may output a second color corresponding to the second indicator in a second area of ​​one of the first to third doors.

[0317] Through this process, the refrigerator 2100 can output a color corresponding to the game application 2102 in a part of the door area, thereby arousing interest among family members and increasing communication.

[0318] Through the above drawings and description, various embodiments of changing the color of the refrigerator door are described. Hereinafter, an embodiment of expressing abnormal temperature in the refrigerator by changing the color of the refrigerator door is described.

[0319] When food above the appropriate temperature is placed in the refrigerator, the following phenomenon occurs.

[0320] This causes the temperature inside the refrigerator to rise sharply, which increases the possibility that other foods will be damaged. In order to lower the temperature, the refrigerator is operated rapidly, so power consumption increases, and moisture accumulates on the surface of hot food, causing the taste to change.

[0321] To perfect this, Figure 22 to Figure 27 An embodiment is provided for providing a notification when food above a first temperature is placed in a refrigerator.

[0322] Figure 22 to Figure 27 This is a diagram for explaining an embodiment of providing a notification when food above an appropriate temperature is placed in a refrigerator according to an embodiment of the present invention. Hereinafter, descriptions repeated with the above-mentioned embodiment will be omitted.

[0323] To this end, the refrigerator 2200 of an embodiment of the present invention may include at least one temperature sensor 2201 for sensing the temperature inside the refrigerator. Here, the temperature sensing sensor 2201 is used to sense the temperature inside the refrigerator, and its setting position is not limited.

[0324] According to one embodiment, the refrigerator 2200 may set the first temperature as an appropriate temperature of the refrigerator. Here, the first temperature may correspond to a temperature that affects the temperature in the refrigerator, based on 25 degrees, which is the temperature at which food begins to deteriorate. When food above the first temperature is placed in the refrigerator, the refrigerator 2200 may identify the placed food. If the temperature in the refrigerator of the temperature sensor that initially senses food above the first temperature reaches a critical temperature or above, the peripheral temperature sensor may be changed to an alert mode, and a warning signal may be transmitted to the control unit in advance.

[0325] Fig. 22 This is an example in which 16 temperature sensors are provided inside the refrigerator 2200 to sense the temperature inside the refrigerator.

[0326] Fig. 22 (a) shows a situation where all the temperature sensors of the refrigerator 2200 are below the first temperature.

[0327] Fig. 22 (b) to Fig. 22 (f) represents an embodiment of changes over time when hot food above 35 degrees is put into the first compartment of the refrigerator 2200 where the first temperature sensor 2201 is located.

[0328] Fig. 22 (b) indicates a situation where the temperature measured by the first temperature sensor 2201 among the temperature sensors of the refrigerator 2200 is above the critical temperature. For example, the critical temperature may correspond to a temperature that is 10 degrees different from the first temperature. For example, when the temperature at which food begins to deteriorate is 25 degrees, the refrigerator 2200 or the user may set 35 degrees as the critical temperature. In one embodiment, when the temperature measured by the first temperature sensor 2201 is above the critical temperature, a notification may be transmitted to the user through the control unit of the refrigerator 2200.

[0329] Reference Fig. 22 (c), as hot food enters the first compartment of the refrigerator 2200, the temperatures measured by the second temperature sensor 2202, the third temperature sensor 2203, and the fourth temperature sensor 2204 in the compartments around the first compartment of the refrigerator 2200 reach above the first temperature.

[0330] As time goes by, refer to Fig. 22(d), the temperature measured by the second temperature sensor 2202, the third temperature sensor 2203 and the fourth temperature sensor 2204 of the refrigerator 2200 reaches above the critical temperature, and the temperature measured by the fifth temperature sensor 2205, the sixth temperature sensor 2206 and the seventh temperature sensor 2207 arranged around the second temperature sensor 2202, the third temperature sensor 2203 and the fourth temperature sensor 2204 reaches above the first temperature.

[0331] Likewise, as time goes on, reference Fig. 22 (e), the temperatures measured by the first to seventh temperature sensors 2201, 2202, 2203, 2204, 2205, 2206, and 2207 of the refrigerator 2200 reach above the critical temperature, and the temperature measured by the eighth temperature sensor 2208 of the adjacent compartment of the refrigerator 2200 reaches above the first temperature.

[0332] As time goes by, eventually Fig. 22 (f), the temperatures measured by the temperature sensors 2201, 2202, 2203, 2204, 2205, 2206, 2207, and 2208 inside the refrigerator 2200 all reach above the critical temperature.

[0333] As described above, even if hot food above the critical temperature is placed in one compartment inside the refrigerator 2200, it can affect the entire refrigerator 2200, so the refrigerator 2200 can notify the user of the problematic food.

[0334] like Fig. 22 The control unit of the refrigerator can sense the temperature change of the refrigerator compartment through a temperature sensor attached to the inside of the refrigerator. In order to inform the user of the temperature change inside the refrigerator, an embodiment of the present invention can turn on the light source of the refrigerator door.

[0335] In more detail, the color of the initial temperature sensing sensor can be displayed at the position of the corresponding refrigerator compartment, and when the critical temperature is above, the warning color can be displayed together in a gradient form at the position of the nearby compartment. To this end, in order to present the color display of a specific compartment, the light source can be arranged on the vertical surface of the LED door. In addition, as another embodiment, since the display door includes a display panel, it is possible to present the color without configuring the light source itself. Below, a detailed description is given with reference to the accompanying drawings.

[0336] Fig.23 It is a diagram for explaining how light changes depending on the arrangement of light sources in a refrigerator according to an embodiment of the present invention.

[0337] Fig.23(a) shows an embodiment in which the light source is arranged vertically on the LED door. When the first to fourth doors 2301, 2302, 2303, and 2304 of the refrigerator 2300 are all provided with light sources, the light sources may be arranged on the central longitudinal direction (y-axis) of the refrigerator 2300.

[0338] According to one embodiment, when a light source is arranged in the central longitudinal direction (y-axis) of the refrigerator 2300, if the light of the light source is turned on based on the control of the control unit, light is irradiated from the center of the refrigerator 2300 toward the horizontal direction (x-axis).

[0339] Fig.23 (b) shows an embodiment in which three LED doors are provided with light sources in the longitudinal direction, and one display door is provided with only one light source in the center of the display door. Light sources are provided in the longitudinal direction (y-axis) of the first door 2301, the third door 2303 and the fourth door 2304 of the refrigerator 2300.

[0340] In one embodiment, when a light source is arranged in the center longitudinal direction (y-axis) of the refrigerator 2300, if the light of the light source is turned on based on the control of the control unit, light is irradiated from the center of the refrigerator 2300 toward the horizontal direction (x-axis). Fig. 22 As described in, when the temperature sensor senses a temperature above a critical temperature, the control unit of the refrigerator can turn on the light source of the door where the temperature sensor is located.

[0341] On the contrary, the display door 2302 may be provided with only one first light source 2305 at the center of the display door 2302. In this case, if the light of the light source is turned on according to the control of the control unit, the light may be scattered from the center of the display door 2302. Fig.23 (d) is described again.

[0342] Fig.23 (c) means Fig.23 (a) of the first to fourth gates 2301, 2302, 2303, 2304 and Fig.23 (b) is a diagram of one of the first door 2301, the third door 2303 and the fourth door 2304, Fig.23 (d) means as Fig.23 (b) is a diagram of the display door of the second door 2302.

[0343] because Fig.23 The light source in the door of (c) is arranged in the vertical direction, so if the control unit of the refrigerator turns on the light of the light source, light is irradiated in the horizontal direction. Fig.23 (c) shows a case where the control unit of the refrigerator turns on the light of the light source located in the middle of at least one light source arranged in the longitudinal direction of the door, that is, irradiates light in the lateral direction of the center of the door.

[0344] because Fig.23 In the display door of (d), the light source is arranged at the center of the door, so if the control unit of the refrigerator turns on the light of the light source, the light spreads from the center to the outside. Fig.23 (d) shows a case where the control unit of the refrigerator turns on the light of the light source located in the middle of the door. That is, the light spreads in a circular shape from the center of the door.

[0345] That is, refer to Fig. 22 and Fig.23 In an embodiment, when the temperature sensor senses a temperature above a critical temperature, the refrigerator can inform the user of the temperature change inside the refrigerator by turning on the light source of the door.

[0346] Fig.24 It is a figure used to illustrate the color change of the door of the refrigerator in one embodiment of the present invention.

[0347] Fig.24 (a) represents the refrigerator 2400 without temperature change.

[0348] In one embodiment, when hot food above the critical temperature is stored in the first compartment 2401a inside the first door 2401, Fig.24 (b), the refrigerator 2400 may turn on the light of the light source of the first door 2401 corresponding to the first compartment 2401a.

[0349] After the first time or Fig. 22 When the temperature sensed by the ambient temperature sensor exceeds the critical temperature, refer to Fig.24 (c), the refrigerator 2400 may turn on the lights of the plurality of light sources of the first door 2401 corresponding to the first compartment 2401a and the periphery of the first compartment 2401a. That is, the refrigerator 2400 may give a gradient effect of the first door 2401 with the first compartment 2401a as the center. Thus, the user can visually see that the food stored in the first compartment 2401a is affecting the temperature of the surrounding compartments.

[0350] In addition, the refrigerator 2400 can turn on the light source corresponding to the second compartment 2402a of the second door 2402 corresponding to the periphery of the first compartment 2401a. That is, when the temperature of the first compartment 2401a is above the critical temperature, not only the temperature inside the first door 2401 is affected, but also the temperature inside the second door 2402 as the adjacent compartment can be affected. Therefore, the refrigerator can turn on the light source corresponding to the second compartment 2402a of the second door 2402.

[0351] Similarly, when the second time has passed or the temperature sensed by the ambient temperature sensor exceeds the critical temperature, refer to Fig.24(d), the refrigerator 2400 may turn on the light source disposed on the first door 2401, thereby outputting a gradient effect based on the first compartment 2401a of the first door 2401, and turn on the light source disposed on the second door 2402, thereby outputting a gradient effect based on the second compartment 2402a of the second door 2402. Based on this, the user can know that the temperature inside the first door 2401 and the second door 2402 of the refrigerator is above the critical temperature.

[0352] When the temperatures sensed by the temperature sensors disposed in the first door 2401 and the second door 2402 exceed the critical temperature, Fig.24 (e), the refrigerator 2400 may change the entire color of the first door 2401 and the second door 2402 to a warning color.

[0353] Reference Fig.24 (f), if the specified time has passed, the refrigerator 2400 may turn off the lights of all the light sources configured in the doors 2401 and 2402. That is, according to one embodiment, when the third time has passed or the temperature inside the refrigerator 2400 returns to normal, the lights of all the light sources configured in the doors 2401 and 2402 may be turned off or changed to a previously preset color.

[0354] More specifically, when the warning color is red and the default color preset by the user is gray, the refrigerator 2400 may Fig.24 (a) to Fig.24 In the embodiment of (e), after a third period of time has passed, the colors of all doors are changed to gray preset by the user.

[0355] In addition, in another embodiment, the refrigerator 2400 may flash a warning color before changing the color of all doors to a preset color, and then change to the preset color.

[0356] Figure 25 to Figure 27 It is a diagram for explaining an embodiment of sensing temperature changes in a refrigerator in a display door of the refrigerator according to an embodiment of the present invention.

[0357] Reference Fig.25 In the case of identifying hot food above a critical temperature, the refrigerator 2500 may output a warning screen through the display panel 2501 of the display door. Here, the warning screen may include a warning icon 2502 and a warning text 2503 notifying the abnormal temperature in the refrigerator 2500.

[0358] In addition, the refrigerator 2500 may also provide an additional monitoring panel 2504 through the display panel 2501. The monitoring panel 2504 may include a temperature icon 2504a, an electricity icon 2504b, and a hygiene icon 2504c. Here, each icon corresponds to an icon for outputting detailed information.

[0359] In more detail, when the user selects the temperature icon 2504a, the refrigerator 2500 can output the entire temperature monitoring screen of the current refrigerator 2500 through the display panel 2501. The temperature monitoring screen may include a refrigerator temperature adjustment user interface. For example, the user can forcefully lower the temperature of a compartment that needs to be cooled sharply after hot food is placed in it through the temperature adjustment user interface.

[0360] In addition, when the user selects the power icon 2504b, the refrigerator 2500 can output a power monitoring screen that can confirm the current power consumption of the refrigerator 2500 through the display panel 2501. The power monitoring screen can confirm the power consumption by compartment of the refrigerator 2500 and output the reason for excessive power consumption by compartment.

[0361] Finally, when the user selects the hygiene icon 2504, the refrigerator 2500 can output the hygiene status screen of each compartment according to the temperature rise through the display panel 2501. For example, the refrigerator 2500 can output the following through the display panel 2501: Fig. 22 The status of the temperature sensor described in .

[0362] Reference Fig.26 (a), when hot food above a critical temperature is identified, the refrigerator 2600 may output a warning screen 2602 through the display panel 2601. Here, the warning screen 2602 may include a warning icon and a warning text.

[0363] In one embodiment, the warning screen 2602 may include information on temperature changes of food included in the refrigerator 2600 .

[0364] In more detail, the refrigerator 2600 can retain information about the food contained in the refrigerator 2600 according to the above embodiment. In addition, the refrigerator 2600 can sense the temperature change around the food through the temperature sensor. Thus, in the case of temperature-sensitive food, the refrigerator 2600 can output information about the temperature change of the food through the warning screen 2602.

[0365] In one embodiment, the refrigerator 2600 may output a text of "the food has gone bad" for food 1, a text of "please consume within one day" for food 2, and a text of "please consume immediately" for food 3.

[0366] That is, the refrigerator 2600 may consider the information on the food and the temperature change, and inform the user whether the food is in danger of deterioration according to the temperature change.

[0367] Reference Fig.26 (b), the refrigerator 2600 can convert the display panel 2601 to a transparent mode, a semi-transparent mode, and an opaque mode according to the above embodiment. According to one embodiment, the refrigerator 2600 can consider the information and temperature changes for the food, and when the food located in the compartment of the display door is affected by the temperature change, the internal food 2602 is displayed to the user by converting the display panel 2601 to a semi-transparent mode, and the text is output at the same time. For example, the refrigerator 2600 can output the internal food 2602 in the display door through the display panel 2601 by converting the display panel 2601 to a semi-transparent mode, and output a text such as "Hot food is raising the temperature of the refrigerator. This food is easy to deteriorate, please move it away". At this time, in order to display the internal food 2602, the refrigerator 2600 can convert only a part of the area of ​​the display panel 2601 into a transparent area. In addition, in order to indicate the internal food 2602, the refrigerator 2600 can output an arrow indicator (not shown) and the like through the display panel 2601.

[0368] In addition, although not shown, the refrigerator 2600 can output the risk of spoilage relative to the current temperature in association with the food information registered in the database. In addition, in the case of food that needs to be consumed within a day or immediately, the refrigerator 2600 can output a recipe through the display panel 2601, thereby guiding the user to consume the food immediately. In addition, in the case of food that needs to be consumed within a day or immediately, the refrigerator 2600 can output setting information such as a reheating method or a linked cooking appliance through the display panel 2601.

[0369] In addition, Fig.25 and Fig.26 Different from the embodiment of the present invention, when hot food above the critical temperature does not enter the refrigerator, the temperature in the refrigerator may also rise due to unstable air circulation.

[0370] In this regard, through Fig. 27 Provide a detailed description.

[0371] Reference Fig. 27 , the refrigerator 2700 may sense unstable air circulation through a temperature sensor and a camera inside the refrigerator 2700. Here, unstable air circulation may include a situation where the temperature sensor senses abnormal temperature even if hot food has not entered the refrigerator 2700. In addition, unstable air circulation may include a situation where the food storage amount of a specific compartment inside the refrigerator 2700 exceeds a critical value.

[0372] In one embodiment, when the temperature sensor senses an abnormal temperature, the refrigerator 2700 can take a picture of the interior of the refrigerator 2700 through the internal camera of the refrigerator 2700. The refrigerator 2700 can judge the quality of air circulation by analyzing the photographed internal space. Afterwards, the refrigerator 2700 can output the judgment result of air circulation to the user through the LED door and the display door.

[0373] In one embodiment, the refrigerator 2700 may output the judgment result of the air circulation through the display panel 2701. The judgment result of the air circulation may include a warning text, a screen 2702 corresponding to a compartment with unstable air circulation, a temperature 2703 of the compartment with unstable air circulation compared to the overall temperature, and an amount 2704 recommended to be moved to other compartments.

[0374] In more detail, the refrigerator 2700 may output a picture 2702 captured by the internal camera through the display panel 2701. Here, the picture 2702 may correspond to a picture of a compartment whose air circulation is determined to be unstable by capturing the air circulation using the internal camera.

[0375] Thus, through the screen 2702 currently being outputted by the display panel 2701 , the user can know that the temperature of the compartment currently being outputted through the screen 2702 is higher than the temperatures of other compartments, and the amount 2704 of movement to other compartments is recommended.

[0376] In addition, Fig.26 Similarly, although not shown in the figure, in order to overcome unstable air circulation, when food is needed to be consumed in the near future, the refrigerator 2700 can output information such as recipes or cooking appliances through the display panel 2701.

[0377] The present invention described above can be implemented by a computer-readable code in a medium having a program recorded thereon. Computer-readable media include all kinds of recording devices storing data that can be read by a computer system. Examples of computer-readable media include hard disk drives (HDD: Hard Disk Drive), solid state disks (SSD: Solid State Disk), silicon disk drives (SDD: Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tapes, floppy disks, optical data storage devices, etc., and can also be implemented in the form of carrier waves (e.g., Internet-based transmission). In addition, the computer may also include a control unit. Therefore, the detailed description described above should not be construed as restrictive in all respects, but should be construed as exemplary. The scope of this specification should be determined by a reasonable interpretation of the attached claims, and all changes within the equivalent scope of this specification should fall within the scope of this specification.

[0378] Industrial Applicability

[0379] The present invention can be repeatedly implemented in a refrigerator and a control method of a refrigerator, and thus has industrial applicability.

Claims

1. A refrigerator, characterized in that: include: A box body, forming at least one space; A display door, which opens and closes the space, and is composed of a display panel for outputting content; The first door, the second door and the third door open and close the space and are provided with a light source; and A control unit, controlling the display panel and the light source; The first door, the second door, and the third door include a front plate and a light guide plate for guiding light to the front plate; The light source irradiates light to the light guide plate, and the light irradiated to the light guide plate passes through the front plate; If the light source is turned on, light of a first color is emitted from the front panel.

2. The refrigerator according to claim 1, characterized in that: The light source included in at least one of the first door, the second door, and the third door is configured in one of a lower edge type, a side edge type, a lower and side edge type, and a direct type structure.

3. The refrigerator according to claim 1, characterized in that: The light source is an LED capable of presenting RGB colors.

4. The refrigerator according to claim 1, characterized in that: The display door also includes a front-facing camera; The control unit activates the front camera when a user approaches the display door, and photographs the food recognized by the front camera; The control unit stores information on the food in a database based on the photographed food, wherein the information on the food includes the name of the food and the expiration date of the food.

5. The refrigerator according to claim 1, characterized in that: At least one of the first door, the second door, and the third door includes a camera inside; The control unit photographs the food through the camera and stores information about the food in a database, wherein the information about the food includes the name of the food and the shelf life of the food.

6. The refrigerator according to claim 1, characterized in that: The control unit receives information on food from a user through the display panel, and stores the information on the food in a database, wherein the information on the food includes the name of the food and the expiration date of the food.

7. The refrigerator according to any one of claims 4 to 6, characterized in that: Also included is an internal camera that films the interior of said refrigerator; The control unit determines the location of the food through the internal camera, and stores the determined location of the food together with the information about the food in the database.

8. The refrigerator according to claim 7, characterized in that: The control unit outputs at least one of the expiration date of the food, the location of the food, and the storage amount of the food stored in the space on the display panel.

9. The refrigerator according to claim 8, characterized in that: The control unit outputs the shelf life of the food using a shelf life indicator; When the shelf life of the food is less than a first period, the control unit outputs the shelf life indicator in a second color; In a case where the expiration date of the food has expired, the control unit outputs the expiration date indicator in a third color.

10. The refrigerator according to claim 8, characterized in that: The control part changes a color of at least one of the first door, the second door, and the third door based on a shelf life of the food.

11. The refrigerator according to claim 10, characterized in that: The control unit changes colors of partial regions of the first door, the second door, and the third door based on the position of the food.

12. The refrigerator according to claim 11, characterized in that: The control unit outputs a flashing indicator at the position of the food using the light source located in the partial area.

13. The refrigerator according to claim 8, characterized in that: Also includes a communication unit for communicating with a user terminal; The control unit changes a color of a door corresponding to the recommended position of the first food when a request for a recommended position of the first food is received from the user terminal.

14. The refrigerator according to claim 13, characterized in that: When the position of the second food stored in the space does not coincide with the recommended position, the control unit outputs a guide indicator pointing to the recommended position of the second food.

15. The refrigerator according to claim 13, characterized in that: The recommended location is determined based on at least one of a temperature of the space, a degree of crowding of the space, a characteristic of the first food, and a freshness of the first food.

16. The refrigerator according to claim 8, characterized in that: The communication unit receives information from the server; When the third food stored in the space is taken out, the control unit updates the information being output on the display panel; When there is no food related to the third food in the space, the control unit outputs a pop-up window on the display panel, the pop-up window outputting information received from the server.

17. The refrigerator according to claim 8, characterized in that The control unit recognizes at least one face through the front camera, receives a name corresponding to the recognized face through the display panel, matches the recognized face and the name, and stores them in the database; The control unit receives a memo through the display panel, the memo including a name corresponding to the first face and information on a fourth food; When the first human face is recognized by the front camera, the control unit changes the color of a portion of the door corresponding to the position of the fourth food.

18. The refrigerator according to claim 8, characterized in that Also comprising at least one temperature sensor for sensing a temperature of the space; The control unit changes the color of the door corresponding to the temperature sensor when the temperature sensed by the temperature sensor is equal to or higher than a first temperature.

19. The refrigerator according to claim 18, characterized in that When the temperature sensed by the temperature sensor is equal to or higher than the first temperature, the control unit outputs a warning screen through the display panel.

20. The refrigerator according to claim 1, characterized in that The display panel operates in one of a transparent mode, a semi-transparent mode, and an opaque mode based on the control of the control unit.

21. A method for controlling a refrigerator, the refrigerator comprising: A box body, forming at least one space; A display door, which opens and closes the space, and is composed of a display panel for outputting content; The first door, the second door and the third door are used to open and close the space and are provided with light sources; as well as A control unit, controlling the display panel and the light source; Characterized in that the control method of the refrigerator comprises: The light source irradiates light to light guide plates included in the first door, the second door, and the third door; The light irradiated to the light guide plate passes through the front panels included in the first door, the second door, and the third door; and If the light source is turned on, light of a first color is emitted from the front panel.

Images