JP2007259965A - Lunch box equipped with heating implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lunch box equipped with a heating implement, which is capable of effectively transmitting a message to a person who is to eat lunch before, during or after a meal. <P>SOLUTION: The lunch box equipped with the heating implement comprises: a box body opened on an upper surface and provided with a hole part which makes it possible to pull out a long-length opener on the front side; the heating implement housed at the bottom part of the box body and provided with the long-length opener; a food tray arranged on the heating implement; and a lid body for closing the opening of the box body. The long-length opener is a tape-like opener for which the message composed of characters and/or codes is displayed on the surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lunch box provided with a heating tool.

  2. Description of the Related Art Conventionally, a lunch box having a heating tool for heating a lunch (eg, a station lunch) before eating is known. Such a lunch box includes a box having an open upper surface, a heating tool having a long opening device (for example, a string-like opening device) housed in the bottom of the box, and the heat generation. It consists of a food tray placed on the utensil and a lid that closes the opening of the box.

  In general, as the heating tool of the lunch box, a water-impermeable heating agent bag (watertight container) in which a heating agent (eg, quicklime) that generates heat by reaction with water is enclosed, A heating tool having a structure including a string-like opening device (long-shaped opening device) used for tearing these bags is widely used. This heating tool is housed in the bottom of the lunch box, and one end side of the string-like opening tool used to cut the heating agent bag and the water bag is opened from the hole formed in the box. Pulled out of the box.

  Then, the user (the person who eats the lunch box) pulls the string-shaped opening device pulled out of the lunch box before the meal, so that both the heating agent bag and the water bag are string-like inside the lunch box. The lunch box is heated by heat or water vapor generated by the tearing of the opening device and the contact and reaction between the heat generating agent and water. A lunch box provided with a heating tool having such a configuration is described in Patent Document 1, for example.

Patent Document 2 discloses a heating container provided with a heating tool having a tape-shaped opening string (long opening device) for tearing a water bag.
JP-A-11-292155 Japanese Utility Model Publication No. 7-11576 (FIG. 2)

  As described above, a lunch box (or a heating container) equipped with a conventional heating tool brings the heating agent of the heating tool and water into contact with each other and reacts immediately before eating the lunch. In order to warm up, at least water for the heat generating agent is accommodated in a water bag, and a string-like or tape-like opening device (long-shaped opening device) for opening the water bag is provided. Such a long opening tool for a heating tool is used only for the purpose of opening a water bag of the heating tool (a heating agent bag and a water bag when the heating tool includes a heating agent bag).

  The objective of this invention is providing the lunch box provided with the heating tool which can transmit a message effectively to the person who eats a lunch before, during or after a meal.

  The present invention is a box having an opening on the top surface and a hole that enables the following elongate opening device to be pulled out on the front side, and a heat generation provided with the elongate opening device housed in the bottom of the box. A lunch box comprising a cooking tool, a food tray disposed on the heating tool, and a heating tool comprising a lid for closing the opening of the box, wherein the elongated opening tool is formed from characters and / or symbols. This is a lunch box with a heating tool, characterized in that the message is a tape-shaped opening tool displayed on the surface.

The preferable aspect of the lunch box provided with the heating tool of the present invention is as follows.
(1) The tape-shaped opening device has a width in the range of 3 to 40 mm.
(2) The hole is cut from the upper side of the wall on the near side of the box.

  The present invention is also a heating tool comprising a watertight container and a water bag for storing a heat generating agent and having a long opening device, wherein the long opening device has a message consisting of letters and / or codes. There is also a heating tool characterized by being a tape-shaped opening tool displayed on the surface.

Preferred embodiments of the heating tool of the present invention are as follows.
(1) The tape-shaped opening device has a width in the range of 3 to 40 mm.
(2) For food heating that is housed and used in a position close to food in a box that houses food.

  The lunch box of the present invention has a long opening device for opening a water bag of the heating tool (a water-tight container and a water bag in the case where the heating tool includes a water-tight container for containing a heating agent). It consists of a tape-shaped opening device with a message displayed on the surface. For this reason, if the user pulls the tape-shaped opening tool before eating the lunch box, the opening tool with the message displayed is pulled out of the box body of the lunch box.

  The user of the lunch box pulls while looking at the tape-shaped opening device to heat the lunch box, and has a relatively long time during and after the lunch box until the lunch box is heated. As the message gradually appears from the inside of the lunch box to the outside by pulling the opening device, it shows a very high interest, paying attention to what is displayed, and read the message while eating the lunch Confirm with. Thus, in the lunch box provided with the heating tool of the present invention, the tape-shaped opening tool has a very high information transmission property, and therefore can effectively transmit a message to the user.

  The lunch box provided with the heating tool of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing a structural example of a lunch box provided with the heating tool of the present invention. 2 is a perspective view of the heating tool 13 provided in the lunch box 10 of FIG. 1, and FIG. 3 is a cross-sectional view of the heating tool 13 cut along the cutting line III-III written in FIG. .

  The lunch box 10 provided with the heating tool shown in FIG. 1 has an upper surface opened and a box 12 having a hole 11 on the front side that allows the following elongate opening tool 22 to be pulled out, and the bottom of the box 12. Is composed of a heating tool 13 having an elongated opening tool 22, a food tray 14 disposed on the heating tool 13, and a lid 15 that closes the opening of the box 12. . The lunch box 10 has a tape-like shape in which the above-mentioned long opening device 22 has a message composed of characters and / or symbols (in the case of the opening device in FIG. The main feature is that it consists of an opening tool. In this specification, the “front side” refers to the side from which the opening tool is pulled out, that is, the hole 11 side of the box 12 shown in FIG. 1, and the “rear side” refers to the hole 11 of the box 12. Means the side of the wall opposite to the wall formed.

  As shown in FIGS. 2 and 3, the heating tool (heating tool of the present invention) 13 provided in the lunch box 10 is composed of a watertight container 18 and a water bag 21 that contain the heating agent 16, and is a long opening tool 22. It has. And this elongate opening tool 22 is comprised from the tape-shaped opening tool by which the message which consists of a character and / or a code | symbol is displayed on the surface as mentioned above.

  In the case of the heating tool 13 shown in FIGS. 2 and 3, the upper surface of the watertight container 18 that contains the heating agent 16 is formed of an easily tearable water-impermeable film 17, and this water-impermeable film 17. A water bag 21 in which water 20 is accommodated in an easily tearable bag body 19 is bonded and fixed to the top. As shown in FIG. 3, the exothermic agent 16 may be accommodated in a water-permeable bag (eg, a bag formed from a non-woven fabric) 16a in order to facilitate handling.

  And the tape-shaped opening tool (elongate opening tool) 22 is arrange | positioned in the state joined to the surface of the water-impermeable film 17 between the water-impermeable film 17 and the water bag 21 of the watertight container 18. FIG. One end is fixed to the near side of the watertight container 18, the other end is projected from the rear side of the water bag 21, and the length of the projected part is the length of the watertight container 18 in the front-rear direction. The length is set larger than (the length in the left-right direction in FIG. 3).

  As shown in FIGS. 1 and 6, the heating tool 13 is in a state where the end of the tape-shaped opening tool 22 is passed through the hole 11 on the near side of the box 12 and protrudes to the outside of the box. Housed in the bottom of the body 12. The lunch box 10 is placed in the food tray 14 by the heat or steam generated by the heating tool 13 when the user pulls the end of the tape-shaped opening tool 22 protruding outside the lunch box or in the vicinity thereof. Warm the bento. Thus, it is preferable that the heating tool of the present invention is for food heating that is used while being housed in a position close to food in a box that houses food.

  When the tape-shaped opening device 22 of the heating tool 13 is pulled in the direction of the arrow written in FIG. 2, the opening device 22 is bonded and fixed to the surface of the water-impermeable film 17 by an adhesive (FIG. 3: 25b). Therefore, as shown in FIG. 4, the water-impermeable film 17 is torn and the watertight container 18 is opened.

  When the tape-shaped opening device 22 is further pulled, the water-impermeable film 17 is further torn, and the opening device 22 is fixed to the water bag 21 with an adhesive (FIG. 3: 25a). The water bag 21 is opened. Since it is bonded and fixed to the water-impermeable film 17 by a double-sided adhesive tape (FIG. 1:23) disposed in close proximity and parallel to the tool 22, the easily tearable bag body 19 of the water bag 21 as shown in FIG. Is torn and the water bag is opened. As a result, the water 20 accommodated in the easily tearable bag 19 of the water bag 21 flows into the container body 18a of the watertight container 18, and the exothermic agent 16 contacts and reacts with the water that has flowed into the container body 18a. Then, heat is generated and water vapor is generated by this heat generation.

  1 is joined to the surface of the water-impermeable film in order to open the water-impermeable film 17 on the upper surface of the watertight container 18. Further, in order to tear and open the water bag 21 together with the water-impermeable film 17, the tape-shaped opening device 22 is disposed between the water-impermeable film and the water bag, and one end portion thereof is a water-tight container. (The surface of the water-impermeable film of the watertight container) After being fixed to the front side of 18 and the other end portion being bent at the rear side of the water bag 21, the penetration of the front side of the box 12 of the lunch box 10 is performed. It passes through the hole 11 and protrudes outside the box. The one end of the tape-shaped opening device 22 may be fixed to the near side of the outer surface of the watertight container 18, the near side of the water bag 21, or the near side of the box 12 of the lunch box 10. .

  And the message which consists of a character and / or a code | symbol is displayed on the tape-shaped opening tool 22 of the heat generating tool 13 with which the lunch box 10 of this invention is provided. When the message is displayed on the opening tool 22 in this way, the end of the opening tool protruding outside the box 12 of the lunch box 10 shown in FIG. 6 is used by the user to warm the lunch before eating. Pulling first allows the user to see a portion of the message as shown in FIG. 7, and further pulling the end of the opening device allows more parts of the message to be seen as shown in FIG. Become.

  A long opening device (string-shaped or tape-shaped opening device) provided in a conventional lunch box is used only for the purpose of warming the lunch before the user eats. However, as described above, the long opening device is composed of the tape-shaped opening device 22 on which a message composed of characters and / or symbols is displayed, so that the user can connect the opening device 22 before eating a lunch box. It can be used as an information transmission medium for transmitting messages during and after meals.

  For example, a user of a lunch box with a lunch box such as a station lunch box pulls while looking at the tape-shaped opening device 22 to heat the lunch box, and while the lunch box is heated, Since it has a relatively long time after eating, pay attention to what is displayed when looking at the characters (part of the message) displayed on the opening device 22 as shown in FIG. Show very high interest and read and confirm the message while eating lunch. Thus, the lunch box provided with the heating tool of the present invention can transmit a message effectively to the user because the tape-shaped opening tool 22 has very high information transmission.

The example of the message displayed on such a tape-shaped opening tool 22 is described below.
(1) Appreciate the user (the purchaser of the lunch box) such as “Thank you for me” like the tape-shaped opening device 22 of the lunch box 10 in FIG. 1, or display a short sentence such as a saying or saying. .
(2) An advertisement such as “Lunch box XX company” or “Taxi order to XX company” is displayed together with a telephone number like the tape-shaped opening device 92 of the lunch box 90 in FIG.
(3) Display “winning” or “out of contact”, etc., give the tape-like opening device a function of a bag, and give a prize if “winning” is displayed on the opening device of the user's lunch box. Or “Today's fortune is XX” is displayed, and the tape-shaped opening device has a fortune-telling function. By using a bag or fortune-telling with such an opening device, the user of the lunch box can enjoy the time from before the meal to after the meal.

  The tape-shaped opening device 22 preferably has a width in the range of 3 to 40 mm. This is because if the width of the tape-shaped opening device is less than 3 mm, the size of characters that can be displayed on the surface of the opening device becomes too small. On the other hand, if the width of the tape-shaped opening device exceeds 40 mm, when the user pulls the opening device, it becomes difficult to pull the opening device due to wrinkles or folds on the opening device, and also when opening the lunch box. This is because the ingredients may get in the way. If an adhesive and a release paper are previously attached to the tip of the tape-shaped opening device, the opening device pulled out from the box is placed along the side of the box, for example, and the adhesive is used to Since it can be fixed at the tip, the opening device can be kept out of the way during meals, and the message displayed on the surface of the opening device can be easily read during meals. Will be able to keep.

  The tape-shaped opening device 22 is preferably formed from a resin film such as a polypropylene resin film or a polyester film (eg, polyethylene terephthalate resin film) or a synthetic paper.

  In addition, the “tape-shaped opening device on which a message consisting of characters and / or symbols is displayed on the surface” used for the lunch box and the heating tool of the present invention has an end portion protruding outside the box body of the lunch box. What includes a string-like opening device connected to the side opposite to the side is also included. In other words, the heating tool used in the lunch box of the present invention is connected to a tape-shaped opening tool on which a message composed of characters and / or symbols is further displayed on the front end of the string-shaped opening tool of the conventional heating tool. The heating tool comprised is comprised.

  The details of the lunch box 10 and its heating tool 13 will be described below.

  Each of the box body 12, the food tray 14, and the lid body 15 of the lunch box 10 of FIG. 1 is made of, for example, polystyrene resin. Examples of these materials include resin materials typified by polyethylene resins and polypropylene resins in addition to the above polystyrene resins. The box 12 is preferably formed of a foamed resin so as not to let the heat generated by the heat generating agent 13 escape to the outside and the heat retention of the heated lunch box is improved. Each of the box 12, the food tray 14, and the lid 15 is made of a paper material such as cardboard or a cardboard sheet that has been subjected to water-resistant processing (for example, paper having an aluminum foil, a resin film, or foamed paper attached to the surface). Material).

  Moreover, as shown in FIG. 1, it is preferable that the hole part 11 for letting the elongate opening tool 22 of the box 12 pass is a cut cut from the upper side of the wall on the near side of the box. When the hole 11 reaching the upper end of the box 12 is provided in this way, after the heating tool 13 is accommodated in the bottom of the box 12, the tape-like opening tool 22 is inserted into the hole 11 from the upper end of the box 12. Therefore, the operation of assembling the heating tool 13 into the box 12 is facilitated. In addition, when the hole 11 having such a shape is assembled by folding the wall of the box 12 from a single sheet into a cylindrical shape, both ends of the sheet are abutted and brought into contact with each other at the position of the hole 11. It can be formed by adhering only a part of the contact portion on the lower side of the box. As a result, the box 12 having the hole 11 can be easily manufactured.

  As described above, by using the heating tool 13, water vapor is released from the opening of the water-impermeable film 17 of the watertight container 18 formed by being torn by the tape-shaped opening tool 22. When heating such a lunch by effectively using such water vapor, it is preferable that a large number of water vapor permeable holes 24a and 24b are formed at the bottom of the food tray 14, as shown in FIG.

  The plurality of water vapor permeable holes 24b formed in a row in the horizontal direction at the bottom of the food tray 14 are lunch boxes (for example, rice and side dishes) in which the water vapor generated by the heating tool 13 is placed in the food tray. It is effective to sufficiently heat the lunch box.

  Further, the water vapor discharge port 15a formed on the upper surface of the lid body 15 causes the water vapor guided above the lunch box by the water vapor permeable hole 24b to generate a flow toward the discharge port 15a. Since the high-temperature steam is successively introduced upward, the lunch box can be heated more effectively.

  The container body 18a of the watertight container 18 of the heating tool 13 shown in FIG. 1 is formed of, for example, a resin material such as polyethylene resin, polypropylene resin, polystyrene resin, polycarbonate resin, or polyvinyl chloride resin, or a metal material. It is formed from a resin material. In order to prevent the heat generated by the contact between the heat generating agent and water from escaping to the box body 12 side of the lunch box 10, it is also preferable to form the container body 18a from a foamed resin.

  And as the water-impermeable film 17 of the watertight container 18 shown in FIG. 1, the aluminum foil which shows easy tearability and water impermeability is used. Note that easy tearing means that the user can tear the water-impermeable film 17 by pulling the tape-shaped opening device 22, and as shown in FIG. 2, the notch 17a assists tearing. It is also included that tearing is possible in a state in which is provided. Further, the water impermeability means that the water has such a degree of water permeability that the water does not enter the watertight container 18 through the water impermeable film 17 when water leaks from the water bag 21. is doing.

  Examples of the water-impermeable film 17 include a resin film and a metal film (metal foil). Examples of the resin film include a polyethylene resin film, a polypropylene resin film, and a polyvinyl chloride resin film. A typical example of the metal film (metal foil) is aluminum foil. As the water-impermeable film, it is preferable to use a metal foil, particularly an aluminum foil, because it exhibits excellent tearability and water-impermeable properties.

  The water-impermeable film 17 is fixed to the upper end surface of the container body 18a by, for example, an adhesive or heat fusion. When an aluminum foil is used as the water-impermeable film 17 and is fixed to the upper end surface of the container body 18a by heat fusion, a resin layer is provided on the surface of the aluminum foil on the container body 18a side. Good. In addition, when a flange extending outward is formed on the upper edge of the container body, a water-impermeable film is stacked on the upper surface of the container body, and the water-impermeable film and the flange are pressurized and heated. Therefore, the container main body can be prevented from being damaged due to pressurization during heat fusion.

  The easily tearable bag 19 of the water bag 21 is formed from a resin film or a metal film (metal foil) in the same manner as the water-impermeable film 17 described above. Further, the easily tearable bag 19 may be provided with a notch 19 a that assists in tearing by the tape-shaped opening tool 22.

  There is no particular limitation on the method of joining the easily tearable bag body 19 and the water-impermeable film 17 of the water bag 21, and both of them may be placed at a position other than the site opened by the tape-shaped opening device 22, for example, a gummed tape. They can also be joined together. As shown in FIG. 1, the two are preferably joined by a double-sided adhesive tape 23 disposed in close proximity to and parallel to the tape-shaped opening device 22. Thereby, when the tape-shaped opening tool 22 is pulled, the water bag 21 is not easily lifted from the water-impermeable film 17, and the water bag can be torn more reliably.

  In addition, as the heat generating agent 16 enclosed in the inside of the watertight container 18, a well-known thing, for example, a quicklime powder, Especially preferably, the mixture of quicklime powder and aluminum powder etc. can be used. An exothermic agent composed of a mixture of quicklime powder and aluminum powder is described in detail, for example, in JP-A-2001-226668.

  Further, a heat insulating material (for example) that makes it difficult to transfer the heat generated in the heating tool 13 to the bottom side of the box 12 between the box 12 of the lunch box 10 and the heating tool 13 accommodated in the bottom of the lunch box 10. A cardboard sheet) or a water absorbing material (for example, a sheet-like sponge or cardboard sheet) for absorbing water that slightly flows down to the bottom of the box 12 when the water bag 21 of the heating tool 13 is opened. You can also.

  FIG. 9 is a perspective view showing another configuration example of the lunch box provided with the heating tool of the present invention. The lunch box 90 shown in FIG. 9 has a structure in which the hole 91 is formed as a through hole extending in the lateral direction in the wall of the box 12 and the message displayed on the surface of the tape-shaped opening device 92 is displayed. Except for the difference, it is the same as the lunch box 10 of FIG. Thus, the hole 91 of the box 12 may be a through hole formed in the wall of the box 12.

  10 is a perspective view showing another configuration example of the heating tool of the present invention, and FIG. 11 is a cross-sectional view of the heating tool 113 cut along the cutting line XI-XI written in FIG. .

  The structure of the heating tool 113 shown in FIGS. 10 and 11 is the same as that of the heating tool 13 shown in FIGS. 2 and 3 except that the entire watertight container 118 is formed of a water-impermeable film 117. Thus, as the watertight container 118, a bag body entirely formed of a water-impermeable film can be used.

  The heating tool 113 is used by joining and fixing the entire bottom surface of the watertight container 118 to the bottom surface of the box of the lunch box or, for example, a heating agent tray 119 is accommodated inside the watertight container 118 as shown in FIG. In this state, it is used by placing it on the bottom of the box. This is because when the watertight container (bag formed from a water-impermeable film) is distorted when the tape-shaped opening device 22 is pulled, it is difficult to tear the water-impermeable film 117 and the water bag 21 on the upper surface. Because. In addition, the water-impermeable film 117 on the upper surface of the watertight container 118 is formed with a notch 117 a that assists in tearing by the tape-shaped opening tool 22, and the notch 117 is formed on the surface of the water-impermeable film 117. It is sealed with an opening tool 22 fixed with an adhesive 25b.

  The heating tool 13 shown in FIG. 2 and FIG. 3 requires a mold for molding when a resin molded product is used as the container main body 18a of the watertight container 18. The heating tool 113 shown in FIGS. 10 and 11 has an advantage that its manufacturing cost is low because it is not necessary to use a mold for its production. Note that the heating tool 113 can use, for example, an inexpensive general-purpose polystyrene resin food tray as the heating agent tray even when the heating agent tray 119 is accommodated in the watertight container 118.

  Use the lunch box provided with the heating tool of the present invention by using it as a lunch box for take-out sold at station stations, catered lunch boxes, convenience stores, etc., or for lunch boxes provided to victims in the event of a disaster The person can be provided with a warm lunch box with a message.

It is a disassembled perspective view which shows the structural example of the lunch box provided with the heat generating tool of this invention. It is a perspective view of the heating tool 13 with which the lunch box 10 of FIG. 1 is provided. It is sectional drawing of the heating tool 13 cut | disconnected along the cutting line III-III line entered in FIG. It is a figure explaining operation | movement of the heat generating tool 13 of FIG. It is another figure explaining operation | movement of the heat generating tool 13 of FIG. It is a figure explaining the usage method of the lunch box 10 of FIG. It is another figure explaining the usage method of the lunch box 10 of FIG. It is another figure explaining the usage method of the lunch box 10 of FIG. It is a perspective view which shows another structural example of the lunch box provided with the heating tool of this invention. It is a perspective view which shows another structural example of the heat generating tool of this invention. It is sectional drawing of the heating tool 113 cut | disconnected along the cutting line XI-XI line entered in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lunch box provided with heating tool 11 Hole 12 Box 13 Heating tool 14 Food tray 15 Lid 15a Water vapor outlet 16 Heat generating agent 16a Water-permeable bag 17 Water-impermeable film 17a Notch 18 Watertight container 18a Container body DESCRIPTION OF SYMBOLS 19 Easy tear bag 19a Notch 20 Water 21 Water bag 22 Tape-like opening tool 23 Double-sided adhesive tape 24a, 24b Water vapor-permeable hole part 25a, 25b Adhesive 90 Lunch box provided with a heating tool 91 Hole part 92 Tape-like opening Tool 113 Heating tool 117 Water-impermeable film 117a Notch 118 Watertight container 119 Heating agent tray

Claims (6)

  A box having an opening on the front side and a hole that enables the following long opening device to be pulled out on the front side, a heating tool provided with a long opening device, housed in the bottom of the box, A lunch box comprising a food tray disposed on a heating tool and a heating tool comprising a lid for closing the opening of the box, wherein the elongated opening tool is composed of letters and / or symbols A lunch box with a heating tool, characterized in that the message is a tape-shaped opening tool with a message displayed on the surface.   The lunch box provided with the heating tool according to claim 1, wherein the tape-shaped opening tool has a width in the range of 3 to 40 mm.   The lunch box provided with the heating tool according to claim 1 or 2, wherein the hole is a cut made from the upper side of the wall on the near side of the box.   A heating tool comprising a watertight container and a water bag for storing a heating agent, and having a long opening device, the long opening device has a message composed of characters and / or symbols displayed on the surface. A heating tool characterized by being a tape-shaped opening tool.   The heating tool according to claim 4, wherein the tape-shaped opening tool has a width in the range of 3 to 40 mm.   The heating tool according to claim 4 or 5, wherein the heating tool is used for heating food that is stored and used in a position close to the food in a box for storing food.

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