JP2009000176A - Commodity warming/display case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a commodity warming/display case capable of increasing effective storage space for commodities. <P>SOLUTION: A conductive film layer 3b is formed on a shelf board 3, and a pair of electrodes 3c and 3c are disposed separately from each other so that electricity is distributed between the electrodes 3c and 3c. By distributing the electricity between the pair of electrodes 3c and 3c, the resistance heating is generated in the conductive film layer 3b. The conductive film layer 3b can be formed as a thin film by means of vapor-deposition or spattering, etc. The conductive film layer can be formed in a curved region, for example, regardless of the shape of the shelf board 3 or a case body 2. Accordingly, if the conductive film layer 3b is formed in the shelf board 3, the structure of the shelf board can be more simplified than a conventional shelf board with a coil, and as the thickness of the shelf board can be thinner than the conventional shelf board, the effective storage space for commodities can be increased. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a product warming / display case in which a product such as food is stored in a case body and the product is displayed while warming.

Stores various foods (prepared foods, Chinese buns, canned beverages, plastic bottle beverages, etc.) and keeps them warm, heated, etc. (In this specification, “heating” is a general term for giving heat to products such as keeping warms and heating. Product warming and display cases such as can warmers are equipped with a multi-stage display shelf in a transparent case body, on which various foods are placed and used. The For example, Patent Document 1 discloses an apparatus for containing canned beverages and heating them. However, a plurality of shelf plates are provided in a body case made of a transparent glass plate, and cans are placed on each shelf plate. If the beverage is placed and displayed, the beverage is heated to a predetermined temperature.
Japanese Patent Laid-Open No. 2002-248034

  The heating means (heating source) disclosed in Patent Document 1 is composed of a heater incorporated in a shelf board. Specifically, this shelf board is composed of three layers of a heating plate with a heater, a heat transfer plate, and a product placement plate. A coil is wound around the heating plate with a heater, and this coil is energized. Thus, resistance heating is generated.

  Many of the heating means (heating sources) in the conventional product heating / display case are configured by the same mechanism as the structure disclosed in Patent Document 1, and it is necessary to secure a space for arranging the coils. The installation position of the heating means in the product heating / display case is limited, and it is almost always provided on the shelf as in Patent Document 1. Moreover, since the shelf board becomes the thickness including the arrangement space of the coil, the problem that the effective storage space of the product is reduced as compared with the case where the shelf board without the coil is used. There was also. In addition, in the case where food is heated with steam, such as a Chinese steamer, there is also a problem that the surrounding case body supporting the shelf board is cloudy and the inside becomes difficult to see.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a product heating / display case capable of reducing the thickness of a shelf plate provided with heating means and increasing the effective storage space for the product. . Further, the present invention provides not only a shelf board but also a heating means in the case main body instead of the shelf board, so that it is possible to further increase the effective storage space for the product and to make the product more effective. It is an object of the present invention to provide a product warming / display case that can also be heated and that can also have a function of preventing fogging of the case body.

In order to solve the above-mentioned problem, in the present invention according to claim 1, a case main body which is used to house and display a product to be heated therein and which is at least partially made of a transparent glass plate, and the case A product heating / display case comprising at least one shelf for displaying products provided in the body,
A conductive film layer laminated on at least one of the case body and the shelf board;
A pair of electrodes capable of conducting to the conductive film layer and spaced from each other,
There is provided a product warming / display case characterized in that the conductive film layer is used as a heating means by energizing between the electrodes to cause resistance heating of the conductive film layer.
The invention according to claim 2 provides the product warming / display case according to claim 1, wherein the conductive film layer is formed on a glass plate provided on at least a part of the case body. To do.
In this invention of Claim 3, the glass plate provided in at least one part of the said case main body consists of a laminated body of several glass plates, and the said electrically conductive film layer is provided between the laminated | stacked glass plates. A product warming / display case according to claim 2 is provided.
In this invention of Claim 4, the said at least 1 step | paragraph shelf board consists of glass plates, The said electrically conductive film layer is formed in this glass plate, The any one of Claims 1-3 characterized by the above-mentioned. Providing warming and display cases.
In this invention of Claim 5, the glass plate which comprises the said shelf board consists of a laminated body of several glass plates, The said electrically conductive film layer is provided between the laminated | stacked glass plates, It is characterized by the above-mentioned. A product warming / display case according to claim 4 is provided.
In this invention of Claim 6, while the said electrically conductive film layer and a pair of electrode are provided in both the case main body and the shelf board, it is the electrical conductivity provided in the shelf board by the average value of the emitted-heat amount per unit area. The product heating / display case according to any one of claims 1 to 5, wherein the heating value of the film layer is set to be higher than the heating value of the conductive film layer provided on the case body. To do.
In this invention of Claim 7, the holding container for the goods holding supported by the said shelf board is further provided, and this holding container is also provided with a pair of conductive film layers spaced apart from each other. The product heating / display according to any one of claims 1 to 6, wherein an electrode is provided and the conductive film layer can be energized between the electrodes to cause resistance heating. Provide a case.
In this invention of Claim 8, the said holding | maintenance container consists of a laminated body of several glass plates, The said electrically conductive film layer is provided between the laminated | stacked glass plates. Providing warming and display cases.
The invention according to claim 9 provides the product heating / display case according to any one of claims 1 to 8, wherein the resistance value is adjusted by the pattern shape of the conductive film layer. To do.

  In the present invention, a conductive film layer is formed on at least one of the shelf board and the case body, and a pair of electrodes are arranged apart from each other so as to be conductive to the conductive film layer. For this reason, resistance heating occurs in the conductive film layer by energizing between the pair of electrodes. The conductive film layer can be formed into a thin film by vapor deposition, sputtering, or the like, and can be formed, for example, even on a curved surface regardless of the shape of the shelf board or the case main body. For this reason, when the conductive film layer is formed on the shelf board, the structure can be simplified and the thickness can be reduced as compared with the shelf board provided with the conventional coil, so that the effective storage space for the product can be increased. . Moreover, since it can also provide in a case main body, even if it uses what does not have a heating means as a shelf board, for example, goods can be heated without providing a special heating means. In this case, the shelf board may simply be a product on which a product can be placed, so that a thinner structure can be used, and the effective storage space for the product can be increased. Further, by providing the conductive film layer on the case body, the conductive film layer can have the anti-fogging function of the case body. In this case, it can also be used as a heating means that fulfills the anti-fogging function exclusively, and by increasing the visibility of the product from the outside with the anti-fogging function, it also generates heat from the case body, In addition, there is an advantage that the product can be heated more efficiently.

  Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 shows a first embodiment of the present invention, and FIG. 1 (a) shows an overall configuration of a product warming / display case (can warmer) 1 for heating canned beverages, plastic bottle beverages and the like. 1 (b) is a perspective view of the shelf board 3 used in the product heating / display case 1 as seen from the front side, and FIG. 1 (c) shows the shelf board 3 from the back side. FIG.

  The product heating / display case 1 of the present embodiment includes a case body 2 having a substantially rectangular parallelepiped shape that forms an outer peripheral wall, and a shelf plate 3 disposed in the case body 2. The case body 2 is formed from a transparent or translucent glass plate. Usually, the case body 2 is formed of a glass plate on the front surface, the back surface, and the two side surfaces, which is for the customer to easily see the inside from the outside, and does not hinder the visibility of the product by the customer. As long as at least a part is formed of a glass plate, the present invention is applicable.

  As shown in FIGS. 1B and 1C, the shelf plate 3 has a glass plate 3a as a base, and a conductive layer 3b is formed on the glass plate 3a. The glass plate 3a is formed of a tempered glass having a size substantially the same as the size of the case body 2 in the width direction and having a predetermined load resistance characteristic. The method for forming the conductive film layer 3b on the glass plate 3a is not limited, and is formed by printing and applying a conductive paste, attaching a metal foil with an adhesive, or vapor deposition or sputtering. A metal film can be formed. Moreover, although the material which forms the electrically conductive film layer 3b is not limited, it is preferable to use ITO since it is transparent and does not impair visibility from the outside, and this is applied to one surface of the glass plate 3a by sputtering or the like. Form a film. The thickness of the ITO film can be in the range of 200 to 2000 angstroms, preferably in the range of 800 to 1200 angstroms.

  In the conductive film layer 3b, electrodes 3c and 3c formed in a strip shape are provided in the vicinity of each side portion so as to be spaced apart from each other. The electrodes 3c and 3c can be provided by bonding or vapor-depositing a metal film such as copper.

  The shelves 3 arranged in the second or higher level are supported between the side portions 3d and 3d between the support portions 2a and 2a provided on the opposite side surfaces of the case body 2, and the bottom one is the bottom. It is supported and set by the wall 2c. At this time, it is preferable that power is supplied to the above-described electrodes 3c and 3c only by setting the shelf plate 3, and the electrodes 3c and 3c are energized in the support portions 2a and 2a or the bottom wall portion 2c. An electrode (case side electrode) (not shown) is provided as possible.

  When the product heating / display case 1 of the present embodiment is used, first, the shelf board 3 is set in the case body 2, and a can beverage or a plastic bottle drink to be heated is placed on the shelf board 3. Put. In this state, when the main switch (not shown) of the product heating / display case 1 is turned on, a current flows between the pair of electrodes 3c and 3c, and resistance heating is generated in the conductive film layer 3b between the electrodes 3c and 3c. . This heat warms canned beverages and the like. According to this embodiment, since it is not necessary to use a coil for the shelf board 3, the shelf board 3 can be made thin and the effective storage space of goods can be increased. Further, when a coil is used, conventionally, a wiring connection operation for energizing the coil is necessary when the shelf board is disposed. However, as in the present embodiment, the support portions 2a and 2b or the bottom wall are used. If the case side electrode is provided in the part 2c, electric power can be supplied to the electrodes 3c and 3c only by supporting the side parts 3d and 3d of the shelf 3 on the support parts 2a and 2b or the bottom wall part 2c.

  The surface of the conductive film layer 3b is preferably coated with silicon oxide, silicon, or the like to protect against humidity. In particular, for those containing food, it is more preferable to coat silicon oxide.

  FIG. 2 shows a second embodiment of the present invention, and FIG. 2 (a) is a side view showing the overall configuration of a product warming / display case (Chinese bun steamer) 10 for heating Chinese buns, etc. FIG. 2B is a rear view thereof, and FIG. 2C is a view showing a part of the case main body 12 used for the product heating / display case 10.

  The product heating / display case 10 of the present embodiment also includes a case body 12 and a shelf board 13 on which the product (Chinese bun) is placed, as is the case with the above embodiment. Composed. In addition, as the shelf board 13, a net-like thing may be used besides a plate-shaped object.

  In the present embodiment, the case body 12 is provided with heating means. Since the product heating / display case 10 of this embodiment is a Chinese bun steamer, the product (Chinese bun) itself is heated by the steam generated from the steam generator accommodated in the mechanism section 15. The heating means provided in 12 is provided in order to eliminate fogging of the case body 12 due to steam.

  The case body 12 is at least partially composed of a glass plate 12a. In this embodiment, as shown in FIG.2 (c), the front surface A and the two side surfaces B and C are integrally formed in the substantially U shape from the glass plate 12a. In addition, as shown in FIG.2 (b), the back is the door 17 which takes in / out goods. A conductive film layer 12b is formed on one side of the glass plate 12a constituting the front surface A and the two side surfaces B and C. The conductive film layer 12b is formed in the entire range of the front surface A and the two side surfaces B and C without interruption. That is, it is also attached to the curved surface portion D at the boundary between the front surface A and the side surfaces B and C. Note that the conductive film layer 12b can be formed by vapor deposition, sputtering, or the like, as in the above embodiment.

  Band-shaped electrodes 12c and 12c are attached in the vertical direction near each edge of the conductive film layer 12b, that is, near the edges of the side surfaces B and C. As a result, when the electrodes 12c and 12c are energized, the conductive film layer 12b positioned between the electrodes 12a generates resistance heating, and the heat causes the front A and the two side surfaces B and C to be prevented from being clouded by steam. Thus, according to the present embodiment, since the resistance heating of the conductive film layer 12b is used, it is possible to provide a heating means (heating source) on the case body 12 itself. In the type in which the product is heated with steam as in the present embodiment, the conductive film layer 12b of the case body 12 mainly functions as anti-fogging, but in the type like the can warmer in the first embodiment, the case When a conductive film layer is provided on the main body, the conductive film layer itself also functions as a heating means for heating the product.

  Since the electrodes 12c and 12c are provided in the vicinity of the edge of each of the side surfaces B and C, an electrode (case-side electrode) is provided at a portion where the edge is engaged and connected (that is, a connection location on the back surface of the case body 12). ) And the electrodes 12c and 12c are in contact with the case-side electrode and can be energized. Thereby, unnecessary wiring can be omitted.

  FIG. 3 shows another aspect of the second embodiment, in which a conductive film layer 12b is formed only on the front surface A of the case body 12, and a pair of strip-like electrodes 12c and 12c are provided apart from each other in the vertical direction. Structure. In this structure, heat is generated only from the front surface A of the case body 12, but the type shown in FIG. 2 and the type shown in FIG. 3 can be selected depending on the type of product to be heated. Of course, the present invention is not limited thereto, and for example, the conductive film layer 12b may be formed on the two side surfaces B and C, and a pair of electrodes 12c and 12c may be provided apart from each other. In these cases, since the electrodes 12c and 12c are provided vertically, if the case-side electrode is provided on the top plate 16 and the mechanism portion 15 of the case body 12, a special one can be obtained simply by assembling them. Energization of the electrodes 12c and 12c is ensured without using wiring.

  Further, as shown in FIG. 4, the case main body 12 is composed of two glass plates 12e and 12f, and between the glass plates 12e and 12f (the outer surface of the inner glass plate 12e or the outer glass plate 12f). A conductive film layer (not shown) and an electrode may be formed on the inner surface. In this case, the conductive film layer is protected by being sandwiched between the glass plates 12e and 12f, and the heat when the case main body 12 is touched can be suppressed.

  Of course, the use of the two glass plates and the formation of the conductive film layer and the electrode therebetween can be applied to the shelf plate of the first embodiment. In addition, the first embodiment and the second embodiment may be combined, and a conductive film layer and an electrode may be disposed on both the shelf board and the case body, and heat may be generated from both the shelf board and the case body. it can. However, in this case, since the product itself is usually heated to a predetermined temperature by heat from the shelf board in contact with the product, the heating means of the case body can function as a defrosting function. If the average value of the heat generation amount per unit area is set so that the heat generation amount of the conductive film layer provided on the shelf plate is higher than the heat generation amount of the conductive film layer provided on the case body, the product is heated. And anti-fogging of the case body can be performed efficiently. Although it varies depending on the type of product to be heated, the volume of the case body, the number of steps of the shelf board, etc., the heat generation amount of the conductive film layer provided on the shelf board is 1. It is preferable to set it to be about 5 to 3 times higher.

  In addition, since the resistance value of the conductive film layer can be changed depending on the pattern shape, adjustment to the necessary heat generation amount can also be performed by adjusting the pattern shape. Further, for example, when the conductive film layer 12b is formed on the front surface A as shown in FIG. 3, if the film is formed uniformly on the entire front surface A, the amount of heat generated near the center increases when energized. Therefore, it is possible to uniformly generate heat from the entire front surface A by adjusting the pattern shape instead of uniformly forming the film on the entire front surface A.

  Further, depending on the product warming / display case, for example, in a food warmer for warming the side dishes, the product is held, and therefore, as shown in FIG. A thick holding container 22 is supported. In view of this, the holding container 22 is also provided with a conductive film layer and a pair of electrodes provided at a distance from each other, and a current may be passed between the electrodes to cause resistance heating in the conductive film layer. it can. By using a glass plate as the holding container 22, a conductive film layer and an electrode can be formed as in the above embodiments. Of course, it is also possible to use a configuration in which a conductive film layer and an electrode are formed between two glass plates.

FIG. 1 shows a product heating / display case according to a first embodiment of the present invention, (a) is a diagram schematically showing the overall configuration of the product heating / display case, and (b) is from the surface direction. It is a figure which shows the seen shelf board, (c) is a figure which shows the shelf board seen from the back direction. 2A and 2B show a product heating / display case according to a second embodiment of the present invention, wherein FIG. 2A is a side view schematically showing the overall configuration of the product heating / display case, and FIG. It is a figure, (c) is a figure which shows a case main body. FIG. 3 is a diagram for explaining another aspect of the second embodiment. FIG. 4 is a diagram for explaining an embodiment in which two glass plates are used as the case main body. FIG. 5 is a diagram for explaining a case where a conductive film layer is formed on a holding container that is used by being placed on a shelf board.

Explanation of symbols

1,10 Product heating / display case 2, 12, 20 Body case 3, 13, 21 Shelf plate 3a, 12a Glass plate 3b, 12b Conductive film layer 3c, 12c Electrode 22 Holding container

Claims (9)

A case main body that is used to house and display products to be heated inside and is at least partially made of a transparent glass plate, and at least one shelf for displaying the products provided in the case main body A product heating / display case comprising
A conductive film layer laminated on at least one of the case body and the shelf board;
A pair of electrodes capable of conducting to the conductive film layer and spaced from each other,
A product heating / display case, wherein the conductive film layer is used as a heating means by energizing between the electrodes to cause resistance heating of the conductive film layer.   The product heating / display case according to claim 1, wherein the conductive film layer is formed on a glass plate provided on at least a part of the case body.   The glass plate provided in at least a part of the case body is formed of a laminate of a plurality of glass plates, and the conductive film layer is provided between the laminated glass plates. Product heating and display case.   The product heating / display case according to any one of claims 1 to 3, wherein the at least one shelf plate is made of a glass plate, and the conductive film layer is formed on the glass plate.   The product heating according to claim 4, wherein the glass plate constituting the shelf plate is composed of a laminate of a plurality of glass plates, and the conductive film layer is provided between the laminated glass plates.・ Display case.   The conductive film layer and the pair of electrodes are provided on both the case main body and the shelf board, and the calorific value of the conductive film layer provided on the shelf board is an average value of the calorific value per unit area on the case main body. The product heating / display case according to claim 1, wherein the product heating / display case is set to be higher than a calorific value of the provided conductive film layer.   Furthermore, a holding container for product holding supported by the shelf plate is provided, and the holding container is also provided with a conductive film layer and a pair of electrodes provided at a distance from each other. The product heating / display case according to any one of claims 1 to 6, characterized in that the conductive film layer can be heated by resistance to electricity.   The product heating / display case according to claim 7, wherein the holding container is made of a laminate of a plurality of glass plates, and the conductive film layer is provided between the laminated glass plates.   The product heating / display case according to claim 1, wherein a resistance value is adjusted according to a pattern shape of the conductive film layer.

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