JP2009028325A - Lunch box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lunch box capable of preventing mixture of a foreign substance by covering a valve part to discharge steam with a label and capable of discharging steam when the steam is generated inside a container body without interference of the label because a valve is securely opened. <P>SOLUTION: The lunch box includes the container body which can be heated in a microwave oven, and a lid to cover an opening of the container body in the sealed state. The lid of the lunch box includes a lid body to cover the opening of the container body, a recess formed in a part of the upper surface of the lid body, the valve formed of a notch formed in the recess for discharging steam generated inside the container body, a minute steam discharging groove formed in the peripheral edge of the recess, and the label pasted to the lid body. The outer circumference of the label is located in the vicinity of the outside end of the steam discharging groove, and the label can cover the recess and the steam discharging groove on the whole or leaving a part of the outer circumference of the groove. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bento container for packaging lunch boxes, side dishes, and the like sold at supermarkets and convenience stores.

Conventionally, the lids of lunch containers sold at supermarkets, convenience stores, etc., form a valve with a U-shaped notch to remove steam generated when heated in a microwave oven, and foreign matter enters from the valve. In order to prevent this, a valve seal having both ends attached thereto is provided.

For this reason, it has been necessary to attach the valve seal and the label, which has the disadvantages of being troublesome and costly.
In addition, since the valve seal with both ends adhered to the upper part of the U-shaped notch is used, if both ends of the U-shaped notch are pressed against the valve seal, the steam is difficult to escape. There was a drawback that it would.
nothing special

    In view of the conventional drawbacks as described above, the present invention covers the valve portion for removing steam with a label to prevent foreign matter from entering, and when steam is generated in the container body, the label is not disturbed, and the valve is reliably The object is to provide a lunch container that can be opened and discharged to the outside.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention provides a lunch box comprising a container body capable of heating in a microwave oven and a lid that covers the opening of the container body in a sealed state. The lid covers the opening of the container body. A lid body, a recess formed in a part of the upper surface of the lid body, a valve formed in the recess and a notch for venting steam generated in the container body, and a peripheral portion of the recess An outer peripheral portion is located in the vicinity of the minute steam vent groove formed on the outer periphery of the steam vent groove and the outer end portion of the steam vent groove, so that the recess and all of the steam vent groove or a part of the outer peripheral portion can be left and covered. A lunch box is composed of a label attached to the lid body.

  As is clear from the above description, the present invention has the following effects.

(1) Since a valve formed by a notch is formed in a recess formed in a part of the upper surface of the lid body, the steam generated in the container body when heated in a microwave oven pushes the valve up into the recess. It can enter, pass through the minute steam vent from the concave portion, and be discharged to the outside.
Therefore, the valve can be reliably moved in the valve opening direction as compared with the conventional case where the valve and the valve seal are in surface contact.

(2) According to the above (1), the outer peripheral portion is positioned in the vicinity of the outer end portion of the minute vapor vent groove, and the label is pasted while leaving all of the minute vapor vent groove or a part of the outer peripheral portion. Therefore, it is possible to reliably discharge the vapor from the inside of the recess.
Even if all of the minute steam venting grooves are covered with the label, the outer periphery of the label is located near the outer end of the minute steam venting groove. This is because of In this case, it is possible to reliably prevent the entry of insects and the like from the outside.

(3) According to the above (1), the concave portion where the valve is formed and the minute steam vent groove can be covered with the label, and it is not necessary to use the valve seal and the label as in the conventional case, and the handling is easy. Cost can be reduced.

(4) According to the above (1), it is only necessary to form a recess, a valve, and a minute steam vent on the lid, and the lid can be easily manufactured.

(5) In claim 2, the same effects as in the above (1) to (4) can be obtained, and the internal volume can be effectively prevented from being reduced. Steam can be discharged to the outside more efficiently than a simple steam vent.

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

  In the best mode for carrying out the present invention shown in FIGS. 1 to 6, reference numeral 1 denotes a lunch container of the present invention, and this lunch container 1 has a lid on the inner side of an opening end portion where a lunch food 2 is stored. A flat upper surface made of a transparent material in which a circular container body 4 formed with a fitting recess 3 and a fitting portion 5 fitted and fixed to the lid fitting recess 3 of the container body 4 are formed on the outer periphery. A lid body 7 having a locking projection ring 6 on the outer periphery, a part of the upper surface of the lid body 7, and a shallow dish-like rectangular recess 8 formed in a portion near the outer periphery in the embodiment of the present invention. A valve 10 formed with a U-shaped notch 9 on the bottom surface of the recess 8, and a plurality of width dimensions of each piece formed on the lid body 7 at the peripheral edge of the recess 8 are 2 mm or less in depth. The outer peripheral part is located in the vicinity of the outer side part of the minute steam release groove | channels 11 of this 1 mm or less vapor removal groove | channel 11, and the said recessed part It is composed of 8 and a lid 13 made of a valve seal serves label 12 that can cover the venting groove 11 total.

In the lunch container 1 having the above-described configuration, the lunch food 2 is stored in the container body 4, and the opening of the container body 4 is fitted to the fitting part 5 of the lid 13 and the lid fitting recess 3 of the container body 4. The inside of the container body 4 is in a sealed state.
In this state, when heated in a microwave oven, steam is generated from the lunch food 2 stored in the container body 4, and the generated steam pushes up the valve 10 to enter the recess 8, and a plurality of the steam enters from the recess 8. Since the outer end of the label 12 is in the vicinity of the outer ends of the plurality of minute steam vent grooves 11 by entering the minute steam vent groove 11 and increasing the pressure in the steam vent groove 11, The part label can be pushed up, and the steam release groove 11 can be opened and discharged to the outside.
Normally, a plurality of minute steam vents 11 are covered with the label 12, so that it is possible to surely prevent the entry of insects and the like, and the valve 10 is formed on the bottom surface of the recess 8. Can be moved to.
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 7 to 18 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

The second embodiment for carrying out the present invention shown in FIGS. 7 to 9 is mainly different from the first embodiment for carrying out the present invention in that a plurality of minute steam vents 11 are provided. The lunch box 1A configured using such a label 12A is the best for carrying out the present invention, in that the label 12A that can be attached while leaving a part of the outer end of the lunch box is used. The same effect as the first embodiment can be obtained.
Although the outer end portion of the minute steam vent groove 11 is opened, the minute steam vent groove 11 has a minute size. For example, even if a small insect enters and enters the recess 8, While passing through the minute vapor vent groove 11, it is possible to adhere to the adhesive surface 12a of the label 12A and prevent its entry. That is, the adhesive surface of the label 12A can be used as the insect adhesive surface.

  The third embodiment for carrying out the present invention shown in FIG. 10 to FIG. 12 is mainly different from the best first embodiment for carrying out the present invention in that the outer peripheral portion is bent into an angle and a lid is formed. A rectangular container body 4A in which the fitting part 14 is formed, and an angled fitting part 15 that fits so as to cover the lid fitting part 14 are formed on the outer peripheral part that covers the opening of the container body 4A. Even in the lunch box 1B configured as described above, the same function and effect as those of the best first embodiment for carrying out the present invention can be obtained in that the lid 13A is used.

  The fourth embodiment for carrying out the present invention shown in FIGS. 13 to 15 is mainly different from the best first embodiment for carrying out the present invention in that the outer peripheral portion is bent into an angle and a lid is formed. A circular container body 4B in which a fitting part 14A is formed, and an angle-shaped fitting part 15A that fits so as to cover the lid fitting part 14A are formed on the outer periphery covering the opening of the container body 4B. The above-mentioned present invention is carried out even in the lunch box 1C configured as described above in that the lid body 7A and the lid 13B in which a circular shallow dish-shaped recess 8A is formed at the center of the lid body 7A are used. Therefore, the same effects as those of the best first embodiment can be obtained.

The fifth embodiment for carrying out the present invention shown in FIGS. 16 to 18 is mainly different from the fourth embodiment for carrying out the present invention in that minute steam vents 11 are formed in the outer peripheral portion. A relatively small circular shallow dish-shaped concave portion 8B is formed, and a label 16 covering the concave portion 8B is adhered to the portion, and the surface of the lid 13B or the bottom surface of the container body 4 is used in the embodiment of the present invention. Even with the lunch box 1D configured as described above, the same effect as the fourth embodiment for carrying out the present invention can be obtained in that the product label 17 is adhered to the surface of the lid 13B.
In addition, although each form which implements this invention demonstrated what formed several steam venting groove | channels, you may form one steam venting groove | channel.

  INDUSTRIAL APPLICABILITY The present invention is used in the manufacturing industry of lunch containers used for lunch boxes sold at supermarkets and convenience stores.

1 is a perspective view of the best first embodiment for carrying out the present invention. Sectional drawing which follows the 2-2 line of FIG. The perspective view of the container main body of the best 1st form for implementing this invention. The perspective view of the lid | cover of the best 1st form for implementing this invention. Sectional drawing which follows the 5-5 line of FIG. Explanatory drawing of the state from which the vapor | steam of the best 1st form for implementing this invention escapes. The perspective view of the 2nd form for implementing this invention. Sectional drawing which follows the 8-8 line of FIG. The principal part expanded sectional view of the 2nd form for implementing this invention. The perspective view of the 3rd form for carrying out the present invention. Sectional drawing which follows the 11-11 line of FIG. The principal part expanded sectional view of the 3rd form for carrying out the present invention. The perspective view of the 4th form for carrying out the present invention. Sectional drawing which follows the 14-14 line | wire of FIG. The principal part expanded sectional view of the 4th form for carrying out the present invention. The perspective view of the 5th form for implementing this invention. FIG. 17 is a sectional view taken along line 17-17 in FIG. 16; The principal part expanded sectional view of the 5th form for implementing this invention.

Explanation of symbols

1, 1A, 1B, 1C, 1D: lunch box,
2: lunch food, 3: lid fitting recess,
4, 4A, 4B: container main body, 5: fitting part,
6: Locking projection ring 7, 7A: Lid body
8, 8A, 8B: recess, 9: notch,
10: valve, 11: minute steam vent,
12, 12A: label, 13, 13A, 13B: lid,
14, 14A: lid fitting part, 15, 15A: fitting part,
16: Label, 17: Product label.

Claims (2)

In a lunch box comprising a container body capable of heating in a microwave oven and a lid that covers the opening of the container body in a sealed state, the lid body covers the opening of the container body, and a top surface of the lid body. A recess formed in the recess, a valve formed by a notch for extracting steam generated in the container body formed in the recess, a minute steam vent formed in the peripheral edge of the recess, and An outer peripheral part is located in the vicinity of the outer end of the steam release groove, and the concave part and the label attached to the lid body that can cover the whole part of the steam release groove or leave a part of the outer peripheral part. The lunch box characterized by becoming. The recess formed in a part of the upper surface of the lid body is formed in a shallow dish shape, and a plurality of minute steam vents are formed in the lid body at the peripheral edge of the recess. The lunch box according to claim 1.

Images