JP2010121784A - Stock management device of refrigerator - Google Patents

Abstract

An object of the present invention is to provide a refrigerator inventory management apparatus capable of automatically managing inventory even for food placed in front of a shelf.
When a closing signal is inputted, a photographing unit 12 attached to the ceiling of the refrigerator and the front end of each shelf performs photographing, and an entry / exit determination unit 15 stores the storage position information generated from the photographed image and the storage. The storage position information at the time of the previous shooting stored in the position storage unit 14 is compared to determine the entry / exit of the article, and the inventory information generation unit 16 determines the shooting date / time information for the article determined to be the receipt. The storage position information is generated as inventory information. When the door opening signal is input, the inventory period calculation unit 20 determines the inventory period of the inventory for each article from the date information at that time and the shooting date information in the inventory information stored in the inventory information storage unit 17. When the inventory period exceeds the warning period, the warning generation unit 21 issues a warning, and the light emission control unit 23 sets the light emitting unit 22 attached to the shelf or the bottom surface where the warning item is stored. Make it emit light.
[Selection] Figure 1

Description

  The present invention relates to a refrigerator inventory management device.

  When many foods are stored in the refrigerator, it is difficult to store the expiration date of each food, and sometimes the expiration date is passed while being stored in the refrigerator.

  In order to avoid such a situation, inventory management of food stored in the refrigerator becomes necessary. At that time, if it is a commercially available food, it is possible to read the bar code attached to the food when it is stored in the refrigerator and use it for inventory management. However, many food items without barcodes such as food items stored in a storage container are stored in the refrigerator, and the barcode cannot be read sufficiently. In addition, there is a problem that it is troublesome to read the barcode.

  Therefore, in order to manage the inventory without bothering reading barcodes and the like, conventionally, a plurality of CCD cameras and image processing means are installed in the refrigerator / freezer compartment, and the food placed in the refrigerator is converted into an image. By recognizing it, an in-chamber management device for a refrigerator that automatically manages food in the cabinet has been proposed (for example, see Patent Document 1).

  In this proposed in-house management device, a CCD camera is embedded in the heat insulation part at the back of the refrigerator, and the characteristics of each food are extracted from the images taken with this CCD camera, and the storage period for each food is counted. To be done.

  However, in the above-mentioned storage management apparatus, since a CCD camera is installed in the back of the refrigerator, when a large container is placed in the back of the refrigerator, it is behind this container and is placed in front of the refrigerator shelf. There was a problem that the food placed in was not reflected.

In general, foods that have a long shelf life are placed in the back of the refrigerator, and foods that have a short shelf life and are consumed quickly are often placed in front of the refrigerator shelf. For inventory management of food in the refrigerator, management of food with a short shelf life is important, and the fact that an image in front of the refrigerator shelf cannot be obtained is a serious problem.
Japanese Patent Laid-Open No. 5-45041 (second page, FIG. 1)

  SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator inventory management device capable of automatically managing inventory even for food placed in front of a shelf.

  According to one aspect of the present invention, the timepiece for generating date and time information, the top of the refrigerator ceiling and the top of each shelf are respectively attached, and when the refrigerator door is closed, Based on the position on the image of the figure extracted from the image photographed by the photographing means and photographing the date and time information output from the clock as photographing date and time information while photographing the bottom surface of the refrigerator Storage position information generating means for generating storage position information of articles stored on the shelves and the bottom surface of the refrigerator, storage position storage means for storing the storage position information until the next shooting, and photographing by the photographing means Each time, the storage position information generated from the newly photographed image is compared with the storage position information stored in the storage position storage means to obtain a new Stock information for the goods received and the goods coming out and stored and the goods coming out and stored, and the goods determined to be received by the goods incoming and outgoing determination means as the stock date and time information and the storage position information as stock information Inventory information generating means for generating; inventory information storing means for storing the inventory information; and inventory information erasing means for erasing the inventory information for the articles determined to be delivered by the entry / exit determining means from the inventory information storing means. The warning period setting means for setting a warning period, and when the refrigerator door is opened, the date and time information at that time and the shooting date and time information of the inventory information stored in the inventory information storage means, Inventory period calculating means for calculating the inventory period of articles in stock for each article; warning generating means for generating a warning when the inventory period exceeds the warning period; And the light emitting means attached to the shelf in which the article is stored or the bottom surface based on the storage position information of the article for which the warning is issued, respectively. There is provided an inventory management device for a refrigerator, comprising: a light emission control means for emitting light when the refrigerator door is opened.

  According to the present invention, even if the food is placed in front of the shelf, inventory management can be automatically performed.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

  FIG. 1 is a block diagram illustrating an example of the configuration of the inventory management apparatus according to the first embodiment of the present invention.

  The inventory management apparatus 1 according to the present embodiment captures the clock 11 that generates date and time information, and the date and time information output from the clock 11 while photographing the shelf surface and the bottom of the refrigerator when the refrigerator door is closed. An image capturing unit 12 acquired as information, and a storage position for generating storage position information of articles stored on each shelf and bottom surface of the refrigerator based on the position on the image of the graphic extracted from the image captured by the image capturing unit 12 An information generation unit 13, a storage position storage unit 14 that stores the storage position information until the next shooting, and storage position information generated from a newly captured image and storage each time shooting is performed by the shooting unit 12. The storage position information at the time of the previous photographing stored in the position storage unit 14 is compared, and a storage / determination determination unit 15 that determines whether a new article is stored or stored, and a storage / determination determination unit 15 determines that the storage is performed. The inventory information generating unit 16 that generates the shooting date / time information and the storage position information as inventory information, the inventory information storage unit 17 that stores the generated inventory information, and the entry / exit determination unit 15 Stock information erasure unit 18 for erasing stock information for the determined article from the stock information storage unit 17, a warning period setting unit 19 for setting a warning period, and date and time information when the refrigerator door is opened And the inventory period calculation unit 20 that calculates the inventory period of the articles in stock for each article from the shooting date and time information in the inventory information stored in the inventory information storage unit 17, and the inventory period exceeds the warning period A warning generating unit 21 that generates a warning, a light emitting unit 22 that is attached to each shelf and bottom of the refrigerator, and an item that is issued by the warning generating unit 21 when the refrigerator door is opened. Based on the storage location information includes a light emission control unit 23 to the light emitting unit 22 mounted on a shelf or the bottom the article is housed, the.

  FIG. 2 is a schematic cross-sectional view of the refrigerator showing an example of the attachment position of the imaging unit 12 in the present embodiment. Here, the example which attached four cameras 12A-12D as the imaging | photography part 12 to the refrigerator 100 with the shelf 102A-102C of 3 steps | paragraphs is shown.

  The camera 12 </ b> A is attached downward to the tip of the ceiling 101 of the refrigerator 100. The camera 12B is attached to the tip of the shelf 102A, the camera 12C is attached to the tip of the shelf 102B, and the camera 12D is attached to the tip of the shelf 102C.

  As a result, the camera 12A photographs the shelf surface of the shelf 102A, the camera 12B photographs the shelf surface of the shelf 102B, the camera 12C photographs the shelf surface of the shelf 102C, and the camera 12D photographs the bottom surface 102D of the refrigerator.

  The camera mounting angle is set so that the shooting range of each camera covers the front of the shelves 102A to 102C and the bottom surface 102D.

  This is because, as a general method of using a refrigerator, food with a short shelf life, for which inventory management is important, is often stored in front of the refrigerator shelf. is there.

  FIG. 3 is a schematic front view of the refrigerator 100 shown in FIG. 2, and shows an example of attachment positions of the photographing unit 12 and the light emitting unit 22 in the present embodiment.

  The cameras 12A to 12D as the imaging unit 12 are attached to the centers of the shelves 102A to 102C and the bottom surface 102D in order to fit the entire width direction of the shelves 102A to 102C and the bottom surface 102D in the imaging range.

  Moreover, as the light emission part 22, light emitting elements 22A-22D, such as LED, are attached to the front-end | tip of each shelf 102A-102C and bottom 102D.

  FIG. 3 shows an example in which the light emitting elements 22A to 22D are attached to the centers of the shelves 102A to 102C and the bottom surface 102D, but the attachment positions are not limited to the center, and may be the tips of the shelves 102A to 102C and the bottom surface 102D. It can be installed anywhere.

  Cameras 12 </ b> A to 12 </ b> D attached to the positions shown in FIGS. 2 and 3 perform shooting when a door closing signal indicating that the door of refrigerator 100 is closed is input. That is, a state in which the storage of articles to / from the refrigerator 100 is finished is photographed. The door closing signal normally uses a signal output for turning off the interior lamp, but in this embodiment, the interior lamp is turned off after the photographing of the cameras 12A to 12D.

  In addition, the cameras 12A to 12D acquire date / time information output from the clock 11 as shooting date / time information.

  The storage position information generation unit 13 is an article stored on the shelves 102A to 102C and the bottom surface 102D of the refrigerator 100 based on the positions on the graphic image extracted from the images captured by the imaging unit 12 (cameras 12A to 12D). Storage position information is generated.

  The storage position storage unit 14 stores the storage position information generated by the storage position information generation unit 13 until the next shooting.

  The entry / exit determination unit 15 stores the storage position information generated from a newly captured image and the storage position information at the time of the previous shooting stored in the storage position storage unit 14 every time the shooting unit 12 performs shooting. Are compared to determine whether new goods are received or delivered.

  For example, when an image as shown in FIG. 4A is obtained at the time of previous shooting, the storage position information generation unit 13 extracts the figures a to f, and these figures a to f are articles a to f. It is assumed that the storage position information regarding the articles a to f is generated. This storage position information is stored in the storage position storage unit 14 until the next shooting.

  Next, when an image as shown in FIG. 4B is obtained at the time of the next shooting, the storage position information generation unit 13 extracts the figures a to e and g, and based on these figures, the article a The storage position information regarding e and g is generated.

  Therefore, the entry / exit determination unit 15 compares the newly generated storage position information with the storage position information at the previous shooting stored in the storage position storage unit 14, and the article g is newly received. It is determined that the article f has been delivered.

  The inventory information generation unit 16 generates shooting date / time information and storage position information as inventory information for an article that has been determined to be received by the storage / rejection determination unit 15.

  The inventory information storage unit 17 stores the inventory information generated by the inventory information generation unit 16.

  The stock information erasure unit 18 erases the stock information from the stock information storage unit 17 with respect to the articles that are determined to be out by the entry / exit determination unit 15.

  In this way, inventory information relating to articles currently stored in the refrigerator 100 is stored in the inventory information storage unit 17.

  For an article stored in the refrigerator 100, the inventory management device 1 of the present embodiment warns the product when the inventory period exceeds a certain period, for example, in order to prevent quality degradation of food. To emit.

  For this purpose, the warning period setting unit 19 sets a warning period until a warning is generated.

  The inventory period calculation unit 20 receives the opening signal indicating that the door of the refrigerator 100 has been opened, the date / time information acquired from the clock 11 and the inventory stored in the inventory information storage unit 17. The inventory period of the in-stock items is calculated for each item from the shooting date / time information in the information. That is, the inventory period for each article is calculated by subtracting the shooting date and time for each article from the date and time when the door opening signal is input.

  Note that the door opening signal is usually a signal that is output to light the interior lamp when the door of the refrigerator 100 is opened.

  The warning generation unit 21 generates a warning when the inventory period calculated by the inventory period calculation unit 20 exceeds the warning period set by the warning period setting unit 19.

  When the door opening signal is input, the light emission control unit 23 determines whether the article is stored on the shelves 102A to 102C or the bottom surface 102D based on the storage position information of the article for which the warning is issued by the warning generation unit 21. The attached light emitting elements 22A to 22D (light emitting unit 22) are caused to emit light.

  Next, the flow of inventory information generation processing and warning generation processing in the inventory management device 1 of the present embodiment will be described with reference to FIG.

  FIG. 5 is a flowchart showing an example of the flow of inventory information generation processing and warning generation processing in the inventory management apparatus 1 of the present embodiment.

  When the closing signal generated when the refrigerator door is closed, the inventory management device 1 captures the date and time information output from the clock 11 while the imaging unit 12 captures the shelf surface and the bottom surface of the refrigerator. Obtained as shooting date / time information (step S01).

  Next, the storage position information generation unit 13 generates storage position information of articles stored on each shelf and bottom surface of the refrigerator based on the position on the graphic image extracted from the image captured by the imaging unit 12. (Step S02).

  This storage position information is stored in the storage position storage unit 14 until the next shooting (step S03).

  Subsequently, the entry / exit determination unit 15 compares the storage position information generated in step S02 with the storage position information at the time of the previous shooting stored in the storage position storage unit 14 (step S04), and enters the article. It is determined whether there has been a shipment (step S05).

  If it is determined that there is “warehousing” in this determination, the inventory information generating unit 16 generates shooting date / time information and storage position information as inventory information for the article determined to be warehousing (step S06). The generated inventory information is stored in the inventory information storage unit 17 (step S07).

  On the other hand, if it is determined that there is “shipping”, the stock information erasure unit 18 erases the stock information for the article determined to be out of the stock information storage unit 17 (step S08).

  When it is determined that “no entry / exit”, the inventory information storage unit 17 stores the conventional inventory information as it is.

  Thereafter, while the refrigerator door is closed, the inventory management device 1 performs only the operation of storing the inventory information in the inventory information storage unit 17.

  Next, when the refrigerator door is opened and an opening signal is input, the inventory period calculation unit 20 acquires the date / time information obtained from the clock 11 and the inventory information stored in the inventory information storage unit 17. The inventory period of the in-stock items is calculated for each item from the inside shooting date / time information (step S09).

  Subsequently, the warning generation unit 21 compares the inventory period calculated by the inventory period calculation unit 20 with the warning period set by the warning period setting unit 19 (step S10), and the inventory period exceeds the warning period. It is determined whether it is not (step S11).

  As a result, when the inventory period exceeds the warning period (YES), the warning generation unit 21 issues a warning, and the light emission control unit 23 determines that the article is based on the storage position information of the article for which the warning is issued. The light emitting unit 22 attached to the stored shelf or the bottom surface is caused to emit light (step S12).

  The warning light emission by the light emitting unit 22 is performed from when the door opening signal is input until the next door closing signal is input. That is, the light emitting unit 22 emits warning light only while the refrigerator door is open.

  If it is determined in step S11 that the inventory period does not exceed the warning period (NO), the warning generation unit 21 does not issue a warning.

  Thereafter, when the next door closing signal is input, the process returns to step S01 to repeat the above-described processing of the flow.

  According to the present embodiment, the shelf surface and the bottom surface are photographed directly by the camera mounted downward on the top of the refrigerator and the top of each shelf, and the storage position information of the articles stored on each shelf and the bottom surface is generated. Therefore, even if it is the food placed in front of each shelf and the bottom, the storage position can be surely grasped.

  In addition, the inventory period is automatically calculated based on the shooting date and time when the goods are received, and a warning is issued if the inventory period exceeds the warning period. It is possible to automatically manage the inventory of stored food.

  Further, in the conventional inventory management apparatus, a counter for counting the inventory period is provided for each stored item. When there are a large number of stored items, the number of counters increases and the circuit scale increases. On the other hand, in the present embodiment, a counter for each stored item is unnecessary, and the inventory period can be calculated by providing only one clock, so that an increase in circuit scale can be prevented.

  Moreover, in the conventional inventory management apparatus, in order to calculate the inventory period, it is necessary to operate the above-described counter when the refrigerator door is closed, and power is consumed accordingly. On the other hand, in the present embodiment, when the refrigerator door is closed, the storage operation of the inventory information is merely performed, so that power consumption while the refrigerator door is closed can be reduced. it can.

  In the first embodiment, an example in which a warning is issued when the inventory period exceeds the warning period is shown. However, in this embodiment, an example in which the warning level is increased stepwise according to the inventory period is shown.

  In the present embodiment, the warning period setting unit 19 sets a plurality of warning periods, and the warning generation unit 21 sets the warning level every time the inventory period calculated by the inventory period calculation unit 20 exceeds the above-described stage by one. The light emission control unit 23 changes the light emission color of the light emitting unit 22 according to the warning level output from the warning generating unit 21.

  FIG. 6 is a flowchart showing the flow of warning generation processing of the present embodiment, taking as an example the case where the warning period set by the warning period setting unit 19 is three stages. Note that the overall flow of the processing of this embodiment is the same as that of the first embodiment, and also in this embodiment, the processing of steps S01 to S10 shown in FIG. 5 is the same as that of the first embodiment. The description of that part is omitted, and only the flow after step S10 is shown.

  Here, the warning period set by the warning period setting unit 19 becomes longer in the order of the first-stage warning period, the second-stage warning period, and the third-stage warning period (first-stage warning period). Period <second warning period <third warning period).

  In the flow of FIG. 6, the warning generation unit 21 sequentially compares the inventory period calculated by the inventory period calculation unit 20 and the three-stage warning period set by the warning period setting unit 19 (step S10).

  At that time, the warning generation unit 21 first compares the third warning period with the warning period to determine whether the inventory period has exceeded the third warning period (step S111).

  When the inventory period exceeds the third stage warning period (YES), the warning generation unit 21 issues a third stage warning, and the light emission control unit 23 sets the light emitting unit 22 to a color corresponding to the third stage warning. The light is emitted (for example, red) (step S121).

  When the inventory period does not exceed the third stage warning period (NO), the warning generation unit 21 subsequently compares with the second stage warning period, and the inventory period exceeds the second stage warning period. It is determined whether it is not (step S112).

  When the inventory period exceeds the second stage warning period (YES), the warning generation unit 21 issues a second stage warning, and the light emission control unit 23 sets the light emitting unit 22 to a color corresponding to the second stage warning. Light is emitted (for example, orange) (step S122).

  When the inventory period does not exceed the second warning period (NO), the warning generation unit 21 finally compares the first warning period with the first warning period, and the inventory period exceeds the first warning period. It is determined whether it is not (step S113).

  When the inventory period exceeds the first-stage warning period (YES), the warning generation unit 21 issues a second-stage warning, and the light emission control unit 23 sets the light-emitting unit 22 to a color corresponding to the first-stage warning. The light is emitted (for example, yellow) (step S123).

  When the inventory period does not exceed the first stage warning period (NO), the warning generation unit 21 does not generate a warning.

  According to the present embodiment, since the light emission color of the light-emitting unit 22 changes according to the length of the inventory period, the refrigerator user can put the article stored in which shelf into the refrigerator for how long. Immediately know if it remains.

  In each of the above-described embodiments, the storage position is managed with each shelf and the bottom as one unit, and one warning light emitting element is attached to each shelf and the bottom. However, if the shelf area is large and many articles are stored on each shelf or bottom, it may be time-consuming to confirm which article the warning was issued when the warning was issued. .

  Therefore, in this embodiment, an example is shown in which the storage location management classification is subdivided so that when a warning is issued, it can be easily confirmed to which article the warning has been issued.

  FIG. 6 shows an example of subdivision of the storage location management category.

  Here, an example is shown in which an image photographed by the photographing unit 12 is vertically divided into three areas A1, A2, and A3.

  Thus, for example, the storage positions of the articles a and d are managed as the area A1, the storage positions of the articles b and e are managed as the area A2, and the storage positions of the articles c and f are managed as the area A3.

  The number of light-emitting elements attached to each shelf and the bottom surface is increased in accordance with the subdivision of the storage position management division. An example is shown in FIG.

  FIG. 8 is a schematic front view of the refrigerator showing an example of the attachment position of the light emitting element in the present embodiment.

  In the present embodiment, three light emitting elements are attached to each shelf and bottom according to the storage positions of each shelf and bottom divided into three areas.

  That is, the light emitting elements 22A1 to 22A3 are attached to the tip of the shelf 102A, the light emitting elements 22B1 to 22B3 are attached to the tip of the shelf 102B, the light emitting elements 22C1 to 22C3 are attached to the tip of the shelf 102C, and the light emitting elements 22D1 to 22D3 are attached to the tip of the bottom surface 102D.

  The warning generation unit 21 according to the present embodiment issues a warning for each shelf and bottom area, and the light emission control unit 23 causes the light emitting elements in the area where the warning is issued to emit light.

  According to the present embodiment, a warning is issued for each shelf and bottom area, so when the warning is issued, the refrigerator user can determine which article the warning is issued to. Confirmation can be performed easily.

  In the third embodiment, an example is shown in which a uniform warning period is set for any area. However, a warning is generated for an area that stores a specific article, such as when a food with a long shelf life is stored. You may want to extend the period until

  Therefore, in this embodiment, an example is shown in which the warning period can be changed for each area by an instruction from the outside.

  FIG. 9 is a block diagram illustrating an example of the configuration of the inventory management apparatus according to the fourth embodiment of the present invention.

  In the inventory management apparatus 1A of the present embodiment, a setting change signal is input from the outside to the warning period setting unit 19A. In response to the input of the setting change signal, the warning period setting unit 19A changes the warning period for each shelf and bottom area.

  FIG. 10 shows an example in which a push button switch is provided for each shelf and bottom area as input means for the setting change signal.

  That is, push button switches SWA1 to SWA3 are provided on the shelf 102A, push button switches SWB1 to SWB3 are provided on the shelf 102B, push button switches SWC1 to SWC3 are provided on the shelf 102C, and push button switches SWD1 to SWD3 are provided on the bottom surface 102D.

  Each time the push button switches SWA1 to SWD3 are pressed once, the warning period setting unit 19A extends the warning period to be set, for example, by one day.

  In some cases, the warning period may be returned to the initial setting. In this case, for example, by pressing and holding the push button switches SWA1 to SWD3, the warning period setting unit 19A returns the warning period to the initial setting. To do.

  According to the present embodiment, since it is possible to extend the period until a warning is generated for each shelf and bottom area, it is possible to perform fine inventory management according to the articles stored in the refrigerator. it can.

1 is a block diagram showing an example of the configuration of an inventory management apparatus according to Embodiment 1 of the present invention. FIG. 3 is a schematic cross-sectional view of a refrigerator illustrating an example of an attachment position of a photographing unit of the inventory management device according to the first embodiment. The typical front view of the refrigerator which shows the example of the attachment position of the imaging | photography part of the inventory control apparatus of Example 1, and a light emission part. The figure for demonstrating operation | movement of the entering / exiting determination part of the inventory control apparatus of Example 1. FIG. FIG. 3 is a flowchart illustrating an example of a flow of inventory information generation processing and warning generation processing in the inventory management device according to the first embodiment. The flowchart which shows the example of the flow of the alert generation process in the inventory control apparatus which concerns on Example 2 of this invention. The figure which shows the example of the area division in the inventory control apparatus which concerns on Example 3 of this invention. The typical front view of the refrigerator which shows the example of the attachment position of the light emitting element of the inventory control apparatus of Example 3. FIG. The block diagram which shows the example of a structure of the inventory control apparatus which concerns on Example 4 of this invention. The typical front view of the refrigerator which shows the example of the attachment position of the pushbutton switch of the inventory control apparatus of Example 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A Inventory management apparatus 11 Clock 12 Image | photographing part 13 Storage position information generation part 14 Storage position storage part 15 Entry / exit determination part 16 Inventory information generation part 17 Inventory information storage part 18 Inventory information deletion part 19, 19A Warning period setting part 20 Inventory period calculation unit 21 Warning generation unit 22 Light emission unit 23 Light emission control unit 12A to 12D Cameras 22A to 22D, 22A1 to 22D3 Light emitting elements SWA1 to SWD3 Push button switches

Claims (5)

A clock that generates date and time information,
Date and time information that is attached to the top of the refrigerator interior ceiling and the top of each shelf, and images the shelf surface directly below and the refrigerator interior bottom when the refrigerator door is closed and is output from the watch Photographing means for obtaining the photographing date and time information;
Storage position information generating means for generating storage position information of articles stored on the shelves and the bottom surface of the refrigerator based on the position of the graphic extracted from the image captured by the imaging means on the image;
Storage position storage means for storing the storage position information until the next shooting;
Each time photographing by the photographing means is performed, the storage position information generated from a newly photographed image is compared with the storage position information stored in the storage position storage means, and a new article is obtained. Warehousing / determining means for determining warehousing and unloading of the stored articles,
Inventory information generating means for generating the shooting date / time information and the storage position information as inventory information for the article determined to be received by the storage / retrieval determining means,
Inventory information storage means for storing the inventory information;
Inventory information erasure means for erasing the inventory information for the articles determined to be delivered by the entry / exit judgment means from the inventory information storage means;
Warning period setting means for setting a warning period;
When the door of the refrigerator is opened, the inventory period of the articles in stock is calculated for each article from the date and time information at that time and the shooting date and time information of the inventory information stored in the inventory information storage means. Inventory period calculation means to
A warning generating means for generating a warning when the inventory period exceeds the warning period;
Light emitting means attached to the tip of each shelf and the tip of the bottom surface,
Based on the storage position information of the article for which the warning has been issued, light emission control for causing the light emitting means attached to the shelf or the bottom surface in which the article is stored to emit light when the refrigerator door is opened. And a refrigerator inventory management device. The warning period setting means sets the warning period in a plurality of stages,
The warning generating means increases the warning level every time the inventory period exceeds the stage by one,
2. The refrigerator inventory management apparatus according to claim 1, wherein the light emission control unit changes a light emission color of the light emission unit in accordance with the warning level. The inventory management device for a refrigerator according to claim 1 or 2, wherein the shelf surface and the bottom surface are divided into a plurality of areas, and the light emitting means is attached to each area. The inventory management apparatus for a refrigerator according to claim 3, wherein the warning period setting means sets the warning period for each area. The warning period setting means is
5. The refrigerator inventory management apparatus according to claim 4, wherein the warning period set for each area is changed according to an instruction from an external input means provided for each area.

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