【０００１】[0001]
【発明の属する技術分野】本発明は御飯、味噌汁等を保
温する携帯用ランチジャーに関し、特に蓄熱材を利用し
て保温性能を向上させたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable lunch jar for keeping rice, miso soup and the like warm, and more particularly to a portable lunch jar having improved heat keeping performance utilizing a heat storage material.
【０００２】[0002]
【従来の技術】従来、断熱材断熱あるいは真空断熱によ
る断熱層を備えた断熱容器の内部下段に味噌汁や熱湯等
の高温液体を入れた汁容器や、その上段に御飯や惣菜を
入れた御飯容器などの複数の食品容器を収納し、外蓋を
被せて携帯し、これら食品容器内の汁等の液体および御
飯を保温する携帯用ランチジャーが知られている。さら
に、このような携帯用ランチジャーの保温性能を高める
目的で、ランチジャーの断熱容器内に収納する食品容器
に蓄熱材を取付け、蓄熱材の持つ熱エネルギーを利用し
た携帯用ランチジャーも知られている。2. Description of the Related Art Conventionally, a soup container containing a high-temperature liquid such as miso soup or boiling water in the lower part of an insulating container having a heat insulation material or a vacuum insulation layer, and a rice container having rice or a side dish in the upper part A portable lunch jar is known in which a plurality of food containers such as the above are stored, covered with an outer lid, and carried to keep the liquid such as juice and rice in the food containers warm. Further, for the purpose of enhancing the heat retention performance of such a portable lunch jar, a portable lunch jar is also known in which a heat storage material is attached to a food container to be stored in the heat insulation container of the lunch jar and the heat energy of the heat storage material is used. ing.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
携帯用ランチジャーにあっては、その保温性能は汁容器
に入れた液体や御飯容器に入れた御飯等の初期温度によ
り大きく異なるため、初期温度が低い場合には保温した
御飯や液体を食する際、すでに冷めているという問題が
あった。このような問題を解決し、ランチジャーの保温
性能を高める目的で、断熱容器内に収納する食品容器に
蓄熱材を設けた携帯用ランチジャーが提案されている
が、このようなランチジャーは断熱容器内に収納する御
飯容器、汁容器などの食品容器の他に、蓄熱材を装着す
るための空間を設ける必要があるため、ランチジャーの
寸法を大きくしなければならないという問題があった。
また一方で、デザインの点から言えば、円筒形以外の形
状を呈する携帯用ランチジャーが好まれるが、断熱容器
内に収納する汁容器は、内部に高温の液体を入れるため
に、汁器蓋と本体との止水性が問題となることから、蓋
と汁容器本体との嵌合はネジ嵌合とするのが最も安全で
あり、そのため汁容器の形状は円筒形状のものが多く、
断熱容器を非円筒形状とすると、断熱容器内に不必要な
空間が生じてしまい、断熱容器の全容積に占める収納可
能な内容物の容積の割合、すなわち容器の有効容積率を
悪くする問題があった。However, in the conventional portable lunch jar, the heat retention performance of the conventional lunch jar varies greatly depending on the initial temperature of the liquid contained in the soup container or the rice contained in the rice container. When it was low, there was a problem that it was already cold when eating warm rice or liquid. For the purpose of solving such problems and improving the heat retention performance of the lunch jar, a portable lunch jar provided with a heat storage material in a food container to be stored in the heat insulating container has been proposed. There is a problem that the size of the lunch jar must be increased because it is necessary to provide a space for mounting the heat storage material in addition to a food container such as a rice container and a soup container to be stored in the container.
On the other hand, from a design point of view, a portable lunch jar having a shape other than a cylindrical shape is preferred, but the juice container to be stored in the heat insulation container has a juice container lid in order to hold hot liquid inside. Since the waterproofness between the main body and the main body becomes a problem, it is safest to fit the lid and the main body of the juice container by screwing, and therefore the shape of the juice container is often cylindrical,
If the heat-insulating container has a non-cylindrical shape, an unnecessary space is generated in the heat-insulating container, which causes a problem that the ratio of the volume of the storable contents to the total volume of the heat-insulating container, that is, the effective volume ratio of the container is deteriorated. there were.
【０００４】本発明は前記事情に鑑みてなされたもの
で、保温性が良く、かつデザイン的に優れた形状を有す
る携帯用ランチジャーの提供を目的としている。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a portable lunch jar having a good heat retaining property and an excellent design.
【０００５】[0005]
【課題を解決するための手段】本発明の請求項１に係る
発明は、断熱容器と、該断熱容器の上部開口に設けられ
た外蓋と、該断熱容器内に収容された食品容器とを備え
てなる携帯用ランチジャーにおいて、前記断熱容器が非
円形の有底筒状とされ、かつ少なくとも１つの前記食品
容器が、該容器の一部に蓄熱材が装着された蓄熱部を有
する蓄熱容器であることを特徴とする携帯用ランチジャ
ーである。請求項２に係る発明は、前記蓄熱容器の収納
部形状が有底円筒状をなし、かつ該蓄熱容器を前記断熱
容器内に収納した際に形成される空間部に前記蓄熱部が
配設されたことを特徴とする請求項１記載の携帯用ラン
チジャーである。請求項３に係る発明は、前記蓄熱容器
が液体を収納する汁容器であり、該汁容器に設けられた
蓄熱材が、マイクロ波で加熱可能な蓄熱材であることを
特徴とする請求項１または２記載の携帯用ランチジャー
である。請求項４に係る発明は、前記蓄熱材が装着され
た蓄熱部が前記蓄熱容器と一体あるいは着脱可能に設け
られたことを特徴とする請求項１から３のいずれか１項
記載の携帯用ランチジャーである。The invention according to claim 1 of the present invention comprises a heat insulating container, an outer lid provided at an upper opening of the heat insulating container, and a food container housed in the heat insulating container. In a portable lunch jar provided, the heat-insulating container has a non-circular bottomed tubular shape, and at least one of the food containers has a heat storage unit in which a heat storage material is attached to a part of the container. Is a portable lunch jar. According to a second aspect of the present invention, the storage part of the heat storage container has a bottomed cylindrical shape, and the heat storage part is disposed in a space formed when the heat storage container is stored in the heat insulating container. The portable lunch jar according to claim 1, which is characterized in that. According to a third aspect of the present invention, the heat storage container is a soup container that stores a liquid, and the heat storage material provided in the soup container is a heat storage material that can be heated by microwaves. Or the portable lunch jar described in 2. The invention according to claim 4 is characterized in that the heat storage section to which the heat storage material is attached is provided integrally with or detachably from the heat storage container, and the portable lunch according to any one of claims 1 to 3. It's a jar.
【０００６】[0006]
【発明の実施の形態】図１および図２は本発明の携帯用
ランチジャーの一例を示すものである。この携帯用ラン
チジャーは、金属製の真空断熱二重壁容器からなる断熱
容器１と、該断熱容器１の上部開口に設けられた外蓋５
と、該断熱容器内に積み重ねて収容された３つ食品容器
２，３，４とを備えて構成されている。1 and 2 show an example of a portable lunch jar according to the present invention. This portable lunch jar comprises a heat-insulating container 1 made of a metal vacuum vacuum double-walled container, and an outer lid 5 provided at an upper opening of the heat-insulating container 1.
And three food containers 2, 3 and 4 stacked and accommodated in the heat insulating container.
【０００７】前記断熱容器１は、ステンレス鋼などの金
属によって形成された有底楕円筒状をなす内容器１ａ
と、それと同形状でやや大型の外容器１ｂとを、それぞ
れの上端部（接合部１ｃ）をろう付けまたは溶接によっ
て接合一体化し、かつこれら内容器１ａと該容器１ｂ間
に真空断熱層１ｆを形成してなるものである。外容器１
ｂの底部には、中央に小孔状の排気孔１ｅが穿設された
凹部が形成され、この凹部内には排気孔１ｅを閉塞する
ろう材１ｄが固着されている。The heat insulating container 1 is an inner container 1a formed of a metal such as stainless steel and having an elliptic cylindrical shape with a bottom.
And a slightly larger outer container 1b having the same shape as the upper container (joint 1c) are integrally joined by brazing or welding, and a vacuum heat insulating layer 1f is provided between the inner container 1a and the container 1b. It is formed. Outer container 1
A recess having a small hole-shaped exhaust hole 1e formed in the center is formed at the bottom of b, and a brazing material 1d for closing the exhaust hole 1e is fixed in the recess.
【０００８】この断熱容器１の上端部には、合成樹脂製
の肩部材６が固定されている。この肩部材６には、ラン
チジャーを吊下げて携帯するためのストラップ等が必要
に応じて取り付けられるようになっている。この肩部材
６には、合成樹脂製の外蓋５が嵌着されるようになって
いる。これら肩部材６および外蓋５は、断熱容器の形状
（本例では有底楕円筒状）に対応した形状に形成されて
いる。A shoulder member 6 made of synthetic resin is fixed to the upper end of the heat insulating container 1. A strap or the like for suspending and carrying the lunch jar can be attached to the shoulder member 6 as needed. An outer lid 5 made of synthetic resin is fitted on the shoulder member 6. The shoulder member 6 and the outer lid 5 are formed in a shape corresponding to the shape of the heat insulating container (in this example, an elliptic cylinder with a bottom).
【０００９】断熱容器１内には、下段から汁容器３、そ
の上の御飯容器２、さらにその上の惣菜容器４が積み重
ねられて収納されている。中段の御飯容器２は、合成樹
脂製の有底楕円筒状をなす容器本体２ａと、該容器本体
２ａの上部開口に嵌着された断熱性の蓋２ｂとからなっ
ている。この断熱性の蓋２ｂは合成樹脂製の楕円厚板状
をなす中空体の内部に発泡スチロールなどの有機質発泡
材を充填してなるものである。この蓋２ｂは下部がやや
縮径され、その部分が容器本体２ａの口部に装着される
ようになっており、また蓋２ｂの上面には蓋開封の際に
掴むための突起が設けられている。上段の惣菜容器４
は、合成樹脂製の有底楕円筒状をなす容器本体４ａと、
該容器本体４ａの上部開口に嵌着された合成樹脂製の蓋
４ｂとからなっている。In the heat insulating container 1, a soup container 3, a rice container 2 above it, and a side dish container 4 above it are stacked and stored from the bottom. The rice container 2 in the middle stage includes a container body 2a made of synthetic resin and having a bottomed elliptic cylinder shape, and a heat insulating lid 2b fitted in an upper opening of the container body 2a. The heat-insulating lid 2b is formed by filling an organic foam material such as styrofoam inside a hollow body made of synthetic resin and having an elliptical thick plate shape. The lower portion of the lid 2b has a slightly reduced diameter, and the portion is attached to the mouth portion of the container body 2a. Further, the upper surface of the lid 2b is provided with a protrusion for gripping when opening the lid. There is. Upper side dish container 4
Is a container body 4a made of synthetic resin and having a bottomed elliptic cylindrical shape,
It is composed of a lid 4b made of synthetic resin fitted in the upper opening of the container body 4a.
【００１０】断熱容器１の下段に収納された汁容器３
は、合成樹脂製の有底円筒状をなす液体収納部３ａと、
該液体収容部３ａの外側に蓄熱材３ｆが充填されるよう
に隙間をおいて一体に設けられた蓄熱部３ｃと、該液体
収納部３ａの上部開口を閉じるように螺着された円形の
蓋３ｂとからなり、前記蓄熱部３ｆに蓄熱することが可
能な蓄熱容器になっている。この蓄熱部３ｃの外観形状
は楕円形筒状とされている。液体収納部３ａの上部外面
にはネジ部３ｄが形成され、また蓋３ｂの周縁垂下部の
内面には、このネジ部３ｄと螺合する蓋ネジ部３ｉが形
成されている。蓋３ｂ裏面の液体収納部３ａの上端が当
接する位置にはパッキン３ｅが取り付けられており、液
体収納部３ａに蓋３ｂを被せて螺着嵌合することによっ
て液体収納部３ａ上端がパッキン３ｅに当接して液体収
納部３ａが密封され、十分な止水性が得られる。なお、
蓋３ｂには、内部が減圧状態となった際に空気を入れて
開栓し易くするための弁体を設けても良い。Juice container 3 stored in the lower part of the heat insulating container 1
Is a bottomed cylindrical liquid storage portion 3a made of synthetic resin,
A heat storage part 3c integrally provided with a gap so that the heat storage material 3f is filled outside the liquid storage part 3a, and a circular lid screwed to close an upper opening of the liquid storage part 3a. 3b and is a heat storage container capable of storing heat in the heat storage section 3f. The external shape of the heat storage section 3c is an elliptic cylindrical shape. A screw portion 3d is formed on the outer surface of the upper portion of the liquid storage portion 3a, and a lid screw portion 3i that is screwed with the screw portion 3d is formed on the inner surface of the peripheral portion of the lid 3b. A packing 3e is attached to the back surface of the lid 3b at a position where the upper end of the liquid storage section 3a abuts. The upper end of the liquid storage section 3a is attached to the packing 3e by covering the liquid storage section 3a with the lid 3b and screwing. The liquid storage portion 3a is brought into contact with the liquid storage portion 3a to be hermetically sealed, and sufficient water shutoff is obtained. In addition,
The lid 3b may be provided with a valve body for injecting air to facilitate opening when the inside is in a depressurized state.
【００１１】図２は図１中のＡ−Ａ'部横断面を示すも
のであり、この図に示すように前記液体収納部３ａは円
筒形をなし、その外側に設けられた蓄熱部３ｃの外周形
状は断熱容器１の内容器１ａと同形の楕円形筒状をなし
ている。そして、液体収納部３ａと蓄熱部３ｃの間に蓄
熱材３ｆが充填されている。蓄熱部３ｃの上面には充填
口３ｇが形成され、この充填口３ｇには封止部材３ｈで
熱融着して密封されている。FIG. 2 is a cross-sectional view taken along the line AA 'in FIG. 1. As shown in this figure, the liquid storage portion 3a has a cylindrical shape, and a heat storage portion 3c provided outside thereof is provided. The outer peripheral shape is an elliptic cylindrical shape having the same shape as the inner container 1a of the heat insulating container 1. A heat storage material 3f is filled between the liquid storage portion 3a and the heat storage portion 3c. A filling port 3g is formed on the upper surface of the heat storage unit 3c, and the filling port 3g is heat-sealed and sealed by a sealing member 3h.
【００１２】蓄熱部３ｃに充填される蓄熱材３ｆとして
は、マイクロ波によって、好ましくは家庭用電子レンジ
によって加熱可能な材質、例えばエチレングリコールな
どのグリコール類、水、水を含むゲルなどから選択使用
される。As the heat storage material 3f filled in the heat storage portion 3c, a material which can be heated by microwaves, preferably by a microwave oven for home use, for example, glycols such as ethylene glycol, water, gel containing water, etc., is selectively used. To be done.
【００１３】前記のように構成された携帯用ランチジャ
ーは、空の汁容器３（蓄熱容器）を電子レンジで加熱す
ることにより、蓄熱材３ｆを加熱、蓄熱させ、その後蓄
熱済みの汁容器３内に温めた味噌汁などの高温液体を入
れ、蓋３ｂを螺着嵌合し、断熱容器１内部に収納する。
その上に、熱い御飯等を入れて蓋２ｂをした御飯容器２
を載せ、さらにその上に、蓋４ｂをした惣菜容器４を載
せ、断熱容器１上部に外蓋５を被せて携帯使用する。断
熱容器１内に収納された各食品容器２，３，４のうち、
断熱蓋２ｂより下の御飯容器２と汁容器３は、断熱容器
１による断熱効果によって保温されるとともに、下段の
汁容器３は蓄熱材３ｆからの放熱によって高温状態が保
たれ、その放熱の一部は上段の御飯容器２にも伝熱され
る。The portable lunch jar constructed as described above heats the heat storage material 3f to store heat by heating the empty juice container 3 (heat storage container) in a microwave oven, and then heat-stored juice container 3 A high-temperature liquid such as warm miso soup is put into the inside, the lid 3b is screwed and fitted, and stored in the heat insulating container 1.
Rice container 2 with a lid 2b filled with hot rice etc.
Is placed on top of this, and the side dish container 4 with the lid 4b is placed thereon, and the outer lid 5 is covered on the upper portion of the heat insulating container 1 for portable use. Of the food containers 2, 3 and 4 stored in the heat insulation container 1,
The rice container 2 and the soup container 3 below the heat insulating lid 2b are kept warm by the heat insulating effect of the heat insulating container 1, and the soup container 3 in the lower stage is kept at a high temperature by the heat radiation from the heat storage material 3f. The part is also transferred to the upper rice container 2.
【００１４】この携帯用ランチジャーによれば、楕円形
の有底筒状をなす断熱容器１の内部に収納する食品容
器、好ましくは汁容器３に蓄熱材３ｆを具備した蓄熱部
３ｃを設けた蓄熱容器としたことにより、ランチジャー
の保温性能を高めることができる。また、前記汁容器３
の液体収納部３ａを有底円筒状とし、かつ該汁容器３を
前記断熱容器１内に収納した際に形成される空間部に蓄
熱部３ｃを配したことにより、ランチジャーを大型化す
ることなく、蓄熱材３ｆによる保温性能の向上を達成す
ることができ、しかも液体収納部３ｂを円筒形状とする
ことで、この液体収納部３ｂに円形の蓋をネジ嵌合によ
って強固に嵌合することができるので、この汁容器３の
液体収納部３ｂは安全な止水性が保たれ、内容物の漏れ
出しを防止することができる。さらに、蓄熱材３ｆとし
てマイクロ波加熱が可能な材料を用いたことにより、該
蓄熱材３ｆを電子レンジ等で簡単かつ短時間で加熱し蓄
熱することができる。According to this portable lunch jar, the heat storage section 3c provided with the heat storage material 3f is provided in the food container, preferably the juice container 3, which is housed inside the heat insulating container 1 having an elliptical bottomed cylindrical shape. By using the heat storage container, the heat retention performance of the lunch jar can be improved. Also, the juice container 3
The size of the lunch jar is increased by making the liquid storage part 3a of the above-mentioned cylindrical shape with a bottom and arranging the heat storage part 3c in the space formed when the juice container 3 is stored in the heat insulating container 1. In addition, it is possible to improve the heat retention performance by the heat storage material 3f, and moreover, by making the liquid storage portion 3b a cylindrical shape, a circular lid can be firmly fitted to this liquid storage portion 3b by screw fitting. As a result, the liquid storage portion 3b of the juice container 3 can keep the water-proof property safe and prevent leakage of the contents. Furthermore, by using a material capable of microwave heating as the heat storage material 3f, it is possible to heat the heat storage material 3f in a microwave oven or the like in a simple and short time to store heat.
【００１５】なお、断熱容器１、外蓋５および収納され
た食品容器２，３，４の形状は、楕円形筒状に限定され
ることなく非円形の有底筒状であれば良く、四角形や六
角形などの角形の有底筒状としても良い。また、前記の
例示においては、汁容器３のみに蓄熱部３ｃを設けた構
成としたが、御飯容器２に蓄熱部を設けても良い。ま
た、汁容器３に蓄熱部３ｃを一体に形成した構成に代え
て、蓄熱部３ｃを着脱可能に液体収納部３ａに取付けた
構成としても良い。さらに断熱容器１側に蓄熱部３ｃを
配した構成としても良い。また、汁容器３の蓄熱部３ｃ
は、電子レンジによる加熱の他、湯煎等の別な加熱法で
加熱しても良い。さらに、前記の例示においては、断熱
容器１として金属製真空二重壁容器を用いたが、二重壁
容器の隙間に断熱層に有機発泡体や無機粉末などの断熱
材を充填した断熱容器、或いはキセノン、クリプトンな
どの空気より熱伝導率の小さい低熱伝導率ガスを封入し
てなる断熱容器を用いても良く、さらには金属容器に代
えて合成樹脂製またはガラス製の容器を用いた断熱容器
を用いても良い。The shapes of the heat-insulating container 1, the outer lid 5 and the food containers 2, 3 and 4 housed therein are not limited to the elliptic cylindrical shape, and may be any non-circular bottomed cylindrical shape. It may be a bottomed cylindrical shape such as a hexagon or a hexagon. Further, in the above example, the heat storage part 3c is provided only in the juice container 3, but the heat storage part may be provided in the rice container 2. Further, instead of the structure in which the heat storage unit 3c is integrally formed in the juice container 3, the heat storage unit 3c may be detachably attached to the liquid storage unit 3a. Further, the heat storage unit 3c may be arranged on the heat insulating container 1 side. Also, the heat storage part 3c of the juice container 3
May be heated by a microwave oven or another heating method such as boiling water. Further, in the above example, a metal vacuum double-walled container is used as the heat-insulated container 1, but a heat-insulated container having a heat-insulating layer filled with a heat-insulating material such as organic foam or inorganic powder in the gap of the double-walled container, Alternatively, an adiabatic container in which a low thermal conductivity gas having a thermal conductivity smaller than that of air such as xenon or krypton is enclosed may be used, and further, a thermal insulation container using a synthetic resin or glass container instead of the metal container. May be used.
【００１６】[0016]
【実施例】図１に示す携帯用ランチジャーを作製し、保
温性能を確認した。ステンレス鋼を材料として楕円形の
有底筒状の内容器１ａと外容器１ｂを作製した。外容器
１ｂの底部には中央に排気口１ｅが穿設された凹部を形
成した。この内容器１ａと外容器１ｂとを組み合わせ、
内容器１ａの拡径した上端部を外容器１ｂの上端部に接
触させ、それらの接合部１ｂをろう付けによって接合
し、一体化した。次に、得られた二重壁容器を、底部を
上向きに真空加熱炉内に置き、外容器１ｂ底部に設けた
凹部内に金属ろう材を入れ、炉内を0.1Torr以下に真空
排気しつつ、該容器を加熱して金属ろう材を溶融させて
排気口を塞いだ後、放冷し、断熱容器１を作製した。こ
の断熱容器１の上端部に合成樹脂製の肩部材６を無理嵌
めによって取り付けた。一方、ポリメチルペンテン（Ｔ
ＰＸポリマー）材により汁容器３を形成し、ポリプロピ
レン材により御飯容器２および惣菜容器４を形成した。
汁容器３は、液体収納部３ａと蓄熱部３ｃとを一体的に
形成した後、充填口３ｇからエチレングリコール（蓄熱
材）を20g充填し、その後、充填口３ｇを汁容器３と同
質の樹脂からなる封止部材３ｈで熱溶着して密閉、封止
して作製した。EXAMPLE A portable lunch jar shown in FIG. 1 was produced and its heat retention performance was confirmed. An elliptical bottomed cylindrical inner container 1a and an outer container 1b were produced from stainless steel. At the bottom of the outer container 1b, a recess having an exhaust port 1e formed at the center was formed. This inner container 1a and outer container 1b are combined,
The enlarged upper end of the inner container 1a was brought into contact with the upper end of the outer container 1b, and the joints 1b were joined by brazing to be integrated. Next, the obtained double-walled container was placed in a vacuum heating furnace with the bottom part facing upward, metal brazing filler metal was put in the concave part provided in the bottom part of the outer container 1b, and the furnace was evacuated to 0.1 Torr or less. After heating the container to melt the metal brazing filler metal to close the exhaust port, the container was allowed to cool to prepare the heat insulating container 1. A shoulder member 6 made of synthetic resin was attached to the upper end of the heat insulating container 1 by force fitting. On the other hand, polymethylpentene (T
The juice container 3 was formed of the PX polymer) material, and the rice container 2 and the side dish container 4 were formed of the polypropylene material.
The juice container 3 is formed by integrally forming the liquid storage portion 3a and the heat storage portion 3c, and then 20 g of ethylene glycol (heat storage material) is filled from the filling port 3g, and then the filling port 3g is made of the same resin as the juice container 3. It was produced by heat-sealing, sealing, and sealing with a sealing member 3h made of.
【００１７】汁容器３を予め電子レンジで加熱し、蓄熱
部３ｃ内の蓄熱材３ｆを蓄熱した後、汁容器３に温かい
味噌汁を入れ、蓋３ｂを嵌合し、断熱容器１内の下段に
収納した。次に、御飯容器２に炊飯ジャーで保温してい
た御飯を入れ、蓋２ｂを嵌合した後、断熱容器１内の汁
容器３の上に載せ、ついで惣菜容器４を御飯容器２の上
に載せた後、外蓋５を断熱容器１に嵌着し、味噌汁と御
飯を保温した。約６時間経過後、断熱容器１から御飯容
器２と汁容器３を取り出し、保温されていた御飯と味噌
汁を食したところ、両者とも十分暖かく、作製した携帯
用ランチジャーは優れた保温性能を有していることが確
認された。After the juice container 3 is heated in a microwave oven in advance to store heat in the heat storage material 3f in the heat storage section 3c, warm miso soup is put in the juice container 3 and the lid 3b is fitted to the lower part of the heat insulating container 1. Stowed. Next, put the rice that has been kept warm in a rice jar into the rice container 2, fit the lid 2b, and put it on the juice container 3 in the heat insulating container 1, and then place the prepared food container 4 on the rice container 2. After mounting, the outer lid 5 was fitted into the heat insulating container 1 to keep the miso soup and rice warm. After about 6 hours, the rice container 2 and the soup container 3 were taken out from the heat insulating container 1 and the warm rice and miso soup were eaten. Both were sufficiently warm, and the portable lunch jar produced had excellent heat insulating performance. It was confirmed that
【００１８】[0018]
【発明の効果】以上説明したように、本発明の携帯用ラ
ンチジャーによれば、楕円形や四角形などの非円形の有
底筒状をなす断熱容器の内部に収納する食品容器、好ま
しくは下段に収納される汁容器に蓄熱材を具備した蓄熱
部を設け、蓄熱容器としたことにより、ランチジャーの
保温性能を高めることができる。また、前記蓄熱容器の
食品収納部形状を有底円筒状とし、かつ該蓄熱容器を前
記断熱容器内に収納した際に形成される空間部に前記蓄
熱部を配したことにより、ランチジャーを大型化するこ
となく、蓄熱材による保温性能の向上を達成することが
できる。しかも食品収納部を円筒形状としたことによ
り、該収納部に蓋をネジ嵌合によって強固に嵌合するこ
とができ、該蓄熱容器の食品収納部に液体を入れた場合
でも安全な止水性が保たれ、内容物の漏れ出しを防止す
ることができる。さらに、蓄熱材としてマイクロ波加熱
が可能な材料を用いたことにより、該蓄熱材を電子レン
ジ等で簡単かつ短時間で加熱して蓄熱することができ
る。As described above, according to the portable lunch jar of the present invention, a food container to be housed inside a heat-insulating container having a non-circular bottomed cylindrical shape such as an oval or a quadrangle, preferably the lower stage. By providing the heat storage part equipped with the heat storage material in the juice container stored in the heat storage container, the heat retention performance of the lunch jar can be improved. In addition, the food storage portion of the heat storage container has a bottomed cylindrical shape, and the heat storage portion is arranged in a space formed when the heat storage container is stored in the heat insulating container, thereby making the lunch jar large in size. It is possible to achieve an improvement in heat retention performance by the heat storage material without changing. Moreover, since the food storage portion is formed into a cylindrical shape, the lid can be firmly fitted to the storage portion by screw fitting, and even when liquid is put in the food storage portion of the heat storage container, safe water shutoff is achieved. It can be kept and leakage of contents can be prevented. Furthermore, by using a material capable of microwave heating as the heat storage material, the heat storage material can be heated in a microwave oven or the like for a short time to store heat.
【図１】図１は本発明の蓄熱鍋の第１の例を示す断面図
である。FIG. 1 is a sectional view showing a first example of a heat storage pan of the present invention.
【図２】図２は同じ蓄熱鍋の要部拡大図である。FIG. 2 is an enlarged view of a main part of the same heat storage pan.
１……断熱容器、２……御飯容器（食品容器）、３……
汁容器（蓄熱容器）、３ａ……液体収納部（食品収納
部）、３ｂ……蓋、３ｃ……蓄熱部、３ｆ……蓄熱材、
４……惣菜容器（食品容器）、５……外蓋。1 ... Insulation container, 2 ... Rice container (food container), 3 ...
Soup container (heat storage container) 3a ... Liquid storage unit (food storage unit), 3b ... Lid, 3c ... Heat storage unit, 3f ... Heat storage material,
4 ... side dish container (food container), 5 ... outer lid.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松田 州央 新潟県西蒲原郡吉田町大字下中野1435 日 本酸素株式会社内 (72)発明者 重田 賢二 新潟県西蒲原郡吉田町大字下中野1435 日 本酸素株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuo Matsuda 1435 Shimonakano, Yoshida-cho, Nishikanbara-gun, Niigata Nihon Oxygen Co., Ltd. (72) Kenji Shigeta 1435 Shimonakano, Yoshida-cho, Nishikanbara-gun, Niigata Nihon Oxygen Co., Ltd.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8027153AJPH09215515A (en) | 1996-02-14 | 1996-02-14 | Portable lunch jar |
| KR1019970004213AKR970061143A (en) | 1996-02-14 | 1997-02-13 | Portable lunch box |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8027153AJPH09215515A (en) | 1996-02-14 | 1996-02-14 | Portable lunch jar |
| Publication Number | Publication Date |
|---|---|
| JPH09215515Atrue JPH09215515A (en) | 1997-08-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8027153APendingJPH09215515A (en) | 1996-02-14 | 1996-02-14 | Portable lunch jar |
| Country | Link |
|---|---|
| JP (1) | JPH09215515A (en) |
| KR (1) | KR970061143A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008005707A (en)* | 2006-06-27 | 2008-01-17 | Kyogi Kk | Device and method for producing fermented food |
| US8006513B2 (en) | 2004-07-21 | 2011-08-30 | Cool Gear International, Llc | Food storage system |
| US8011205B2 (en) | 2004-12-27 | 2011-09-06 | Cool Gear International, Llc | Food storage system |
| CN103569485A (en)* | 2012-07-20 | 2014-02-12 | 膳魔师株式会社 | Food preservation container for carrying |
| CN104382317A (en)* | 2014-12-11 | 2015-03-04 | 广西大学 | Portable suitcase for dining |
| US11910893B2 (en) | 2018-06-27 | 2024-02-27 | Global Designs Co | Portable insulated food container |
| US12157622B2 (en) | 2017-03-28 | 2024-12-03 | Japan Aerospace Exploration Agency | Thermal insulation container and heat/cold insulation apparatus using the same |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8006513B2 (en) | 2004-07-21 | 2011-08-30 | Cool Gear International, Llc | Food storage system |
| US8011205B2 (en) | 2004-12-27 | 2011-09-06 | Cool Gear International, Llc | Food storage system |
| US8720223B2 (en) | 2004-12-27 | 2014-05-13 | Cool Gear International Llc | Food storage system |
| JP2008005707A (en)* | 2006-06-27 | 2008-01-17 | Kyogi Kk | Device and method for producing fermented food |
| CN103569485A (en)* | 2012-07-20 | 2014-02-12 | 膳魔师株式会社 | Food preservation container for carrying |
| CN104382317A (en)* | 2014-12-11 | 2015-03-04 | 广西大学 | Portable suitcase for dining |
| US12157622B2 (en) | 2017-03-28 | 2024-12-03 | Japan Aerospace Exploration Agency | Thermal insulation container and heat/cold insulation apparatus using the same |
| US11910893B2 (en) | 2018-06-27 | 2024-02-27 | Global Designs Co | Portable insulated food container |
| Publication number | Publication date |
|---|---|
| KR970061143A (en) | 1997-09-12 |
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