JP2023039143A

JP2023039143A - refrigerator

Info

Publication number: JP2023039143A
Application number: JP2021146162A
Authority: JP
Inventors: 健一塚本; Kenichi Tsukamoto
Original assignee: Toshiba Lifestyle Products and Services Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2023-03-20

Abstract

To provide a refrigerator having a structure for improving fluidity of a foam heat insulation material in a ceiling heat insulation part.SOLUTION: A refrigerator comprises a storage chamber 20 comprising an opening on a front side, a ceiling 42 of the storage chamber 20, a ceiling heat insulation part 14 above the ceiling 42, an illuminating device 50 provided in the ceiling 42, a heat insulation member 46 provided in the ceiling heat insulation part 14, and a foam heat insulation material 47 packed in the ceiling heat insulation part 14. The illuminating device 50 includes a light source 52, and a cover part 51 located closer to the side of the ceiling heat insulation part 14 than the light source 52. In the ceiling heat insulation part 14, the heat insulation member 46 is attached to the cover part 51.SELECTED DRAWING: Figure 3

Description

本発明の実施形態は冷蔵庫に関する。 Embodiments of the present invention relate to refrigerators.

冷蔵庫の筐体では、庫外表面を形成する外箱と、庫内面を有する内箱との間に真空断熱材が配置されている。さらに、外箱と内箱との間に発泡断熱材が充填されている。 In a refrigerator housing, a vacuum insulation material is arranged between an outer box forming an outer surface of the refrigerator and an inner box having an inner surface of the refrigerator. Furthermore, foam insulation is filled between the outer box and the inner box.

冷蔵庫の天井部分には庫内を照らす照明装置が取り付けられている。照明装置は内箱に固定されている。照明装置の上に真空断熱材が配置されている場合には、外箱と真空断熱材との間に発泡断熱材が充填されると共に、真空断熱材と照明装置との間にも発泡断熱材が充填されている（例えば特許文献１参照）。 A lighting device is attached to the ceiling of the refrigerator to illuminate the inside of the refrigerator. The lighting device is fixed to the inner box. When the vacuum heat insulating material is arranged on the lighting device, the foam heat insulating material is filled between the outer box and the vacuum heat insulating material, and the foam heat insulating material is also placed between the vacuum heat insulating material and the lighting device. is filled (see Patent Document 1, for example).

冷蔵庫の製造工程においては、外箱、内箱、真空断熱材及び照明装置が組み立てられた後、外箱に形成された孔から外箱と内箱との間の空間に発泡断熱材が充填される。 In the manufacturing process of a refrigerator, after an outer box, an inner box, a vacuum insulation material, and a lighting device are assembled, the space between the outer box and the inner box is filled with a foamed heat insulating material through a hole formed in the outer box. be.

特開２０１６－１４４８４号公報JP 2016-14484 A

しかし、真空断熱材と照明装置との隙間が狭いため、発泡断熱材が充填される際にその隙間において発泡断熱材の流動性が悪かった。 However, since the gap between the vacuum heat insulating material and the lighting device is narrow, the flowability of the foam heat insulating material in the gap is poor when the foam heat insulating material is filled.

そこで本発明は、外箱と内箱との間の空間での発泡断熱材の流動性が良くなる構造の冷蔵庫を提供することを課題とする。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a refrigerator having a structure in which the foam heat insulating material in the space between the outer case and the inner case has good fluidity.

前方に開口部を有する貯蔵室と、前記貯蔵室の天井と、前記天井より上の天井断熱部と、前記天井に設けられた照明装置と、前記天井断熱部に充填された発泡断熱材と、前記発泡断熱材と異なる部材であり前記天井断熱部に設けられた部材である断熱部材と、を有する冷蔵庫において、前記照明装置は、光源と、前記光源より前記天井断熱部側に位置する覆い部とを含み、前記天井断熱部において前記覆い部に前記断熱部材が取り付けられたことを特徴とする。 A storage room having an opening in front, a ceiling of the storage room, a ceiling insulation part above the ceiling, a lighting device provided on the ceiling, and a foam insulation material filled in the ceiling insulation part, In a refrigerator having a heat insulating member which is a member different from the foam heat insulating material and is provided in the ceiling heat insulating portion, the lighting device includes a light source and a cover portion positioned closer to the ceiling heat insulating portion than the light source. and wherein the heat insulating member is attached to the cover portion in the ceiling heat insulating portion.

実施形態の冷蔵庫の縦断面図。BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view of the refrigerator of embodiment. 冷蔵庫のブロック図。A block diagram of a refrigerator. 天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of a ceiling heat insulation part. 冷蔵室の天井の平面図（上から見た図）。Plan view of the ceiling of the refrigerator compartment (view from above). 冷蔵庫の背面図（後ろから見た図）。Rear view of the refrigerator (view from the back). 発泡断熱材が充填される時の、天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of a ceiling heat insulation part when a foam heat insulation material is filled. 発泡断熱材の充填前の天井断熱部を前から見た図。The figure which looked at the ceiling heat insulation part from the front before filling with foam heat insulation material. 変更例の天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of the ceiling heat insulation part of the example of a change. 別の変更例の天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of the ceiling heat insulation part of another example of a change. さらに別の変更例の天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of the ceiling heat insulation part of another modification. さらに別の変更例の天井断熱部の前後方向の断面図。Sectional drawing of the front-back direction of the ceiling heat insulation part of another modification.

実施形態について図面に基づき説明する。以下の実施形態は例示であり、発明の範囲はこれに限定されない。以下の実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置換、変更を行うことができる。以下の実施形態やその変形は、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 Embodiments will be described based on the drawings. The following embodiments are examples, and the scope of the invention is not limited thereto. The following embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. The following embodiments and modifications thereof are included in the scope of the invention described in the claims and equivalents thereof.

以下の説明において、貯蔵室を開閉する扉側を前、その反対側を後ろとする。また、左右とは、冷蔵庫の前に立った利用者から見た左右のことである。 In the following description, the side of the door that opens and closes the storage compartment is the front side, and the opposite side is the back side. Also, left and right are left and right as seen from the user standing in front of the refrigerator.

まず、冷蔵庫１０の全体構成について説明する。図１に実施形態の冷蔵庫１０を示す。冷蔵庫１０の筐体１１は、冷蔵庫１０の庫外表面を形成する外箱１２と、貯蔵室の内面を形成する内箱１３とが組み合わされたものである。外箱１２は内箱１３を上下、左右及び後ろ側から覆っている。筐体１１の内部（すなわち外箱１２と内箱１３との間）の要所には断熱部材としての真空断熱材４６が設けられている。さらに、筐体１１の内部における真空断熱材４６のない場所には、発泡断熱材４７が充填されている。真空断熱材４６は発泡断熱材４７よりも断熱性が高い。 First, the overall configuration of refrigerator 10 will be described. FIG. 1 shows a refrigerator 10 of an embodiment. A housing 11 of the refrigerator 10 is a combination of an outer case 12 forming the outer surface of the refrigerator 10 and an inner case 13 forming the inner surface of the storage compartment. The outer box 12 covers the inner box 13 from above, below, left, right and rear. A vacuum heat insulating material 46 is provided as a heat insulating member at a key point inside the housing 11 (that is, between the outer box 12 and the inner box 13). Furthermore, a foamed heat insulating material 47 is filled in a place inside the housing 11 where there is no vacuum heat insulating material 46 . The vacuum heat insulating material 46 has higher heat insulating properties than the foam heat insulating material 47 .

ここで、真空断熱材４６は、外装材とその内部に充填された繊維製芯材（例えばグラスウール繊維）とならなり、外装材の中が排気され略真空になったものである。また、発泡断熱材４７は発泡合成樹脂（例えばウレタンフォーム）からなる。 Here, the vacuum heat insulating material 46 consists of an exterior material and a fiber core material (for example, glass wool fiber) filled therein, and the interior of the exterior material is evacuated to a substantially vacuum state. The foamed heat insulating material 47 is made of foamed synthetic resin (for example, urethane foam).

筐体１１の内側は断熱仕切壁１５によって上下に仕切られている。断熱仕切壁１５の上側は冷蔵空間である。冷蔵空間は冷蔵保存に適した温度である冷蔵温度に維持される。また断熱仕切壁１５の下側は冷凍空間である。冷凍空間は冷凍保存に適した温度である冷凍温度に維持される。冷蔵空間及び冷凍空間には食品を貯蔵する貯蔵室がそれぞれ複数設けられている。各貯蔵室は前方に開口部を有し、利用者はその開口部から食品を出し入れできる。 The inside of the housing 11 is vertically partitioned by a heat insulating partition wall 15 . The upper side of the heat insulation partition wall 15 is a cold storage space. The refrigerated space is maintained at a refrigerated temperature, which is a temperature suitable for refrigerated storage. A frozen space is provided below the heat insulating partition wall 15 . The frozen space is maintained at a freezing temperature that is suitable for frozen storage. A plurality of storage compartments for storing food are provided in each of the refrigerating space and the freezing space. Each storage compartment has an opening at the front, through which the user can put in and take out food.

冷蔵空間には上から順に貯蔵室としての冷蔵室２０及び野菜室２２が設けられている。冷蔵室２０内は冷蔵温度の範囲内の例えば２～５℃に維持され、野菜室２２内は冷蔵温度の範囲内の例えば４～７℃に維持される。冷蔵室２０には複数の載置棚２４が設けられている。一番下の載置棚２４の下は、冷蔵室２０の中でも特に低温に維持されるチルド室３９となっている。また、野菜室２２には、引き出し式容器４０と、その上に載っている上側容器４１が収納されている。 The refrigerating space is provided with a refrigerating compartment 20 and a vegetable compartment 22 as storage compartments in this order from the top. The interior of the refrigerator compartment 20 is maintained at a refrigerating temperature range of, for example, 2 to 5.degree. C., and the vegetable compartment 22 is maintained at a refrigerating temperature range of, for example, 4 to 7.degree. A plurality of mounting shelves 24 are provided in the refrigerator compartment 20 . Under the lowest placing shelf 24 is a chilled room 39 that is maintained at a particularly low temperature in the refrigerating room 20 . The vegetable compartment 22 contains a drawer type container 40 and an upper container 41 placed thereon.

冷蔵室２０の前方開口部は、フレンチ式（観音式）の左右一対の冷蔵室扉２１で開閉される。冷蔵室扉２１には操作パネル４５（図２参照）が設けられている。また、冷蔵室扉２１の開閉を検知する扉センサ４４（図２参照）が設けられている。 A front opening of the refrigerating chamber 20 is opened and closed by a pair of left and right refrigerating chamber doors 21 of a French type (double-sided type). The refrigerator compartment door 21 is provided with an operation panel 45 (see FIG. 2). A door sensor 44 (see FIG. 2) is provided to detect opening and closing of the refrigerator compartment door 21 .

野菜室２２の前方開口部は、引き出し式の野菜室扉２３で開閉される。上記の引き出し式容器４０は野菜室扉２３の庫内側の面に固定されている。そのため、利用者が野菜室扉２３を開けると、引き出し式容器４０と、引き出し式容器４０の上に載っている上側容器４１とが、一体となって引き出される。 A front opening of the vegetable compartment 22 is opened and closed by a drawer type vegetable compartment door 23 . The drawer-type container 40 is fixed to the inside surface of the vegetable compartment door 23 . Therefore, when the user opens the vegetable compartment door 23, the drawer-type container 40 and the upper container 41 placed on the drawer-type container 40 are pulled out together.

冷凍空間の上部には貯蔵室としての製氷室や小冷凍室２６が設けられ、冷凍空間の下部には貯蔵室としての冷凍室２８が設けられている。製氷室及び冷凍室２８の内部は冷凍温度の範囲内の例えば－２０～－１８℃に維持される。また小冷凍室２６内は、冷凍温度の範囲内の例えば－１８～－１６℃に維持される。小冷凍室２６及び冷凍室２８にはそれぞれ引き出し式の収納容器１８、１９が収納されている。 An ice making compartment and a small freezer compartment 26 are provided as storage compartments in the upper part of the frozen space, and a freezer compartment 28 as a storage compartment is provided in the lower part of the frozen space. The interiors of the ice making compartment and freezing compartment 28 are maintained at a freezing temperature range of -20 to -18°C, for example. The inside of the small freezer compartment 26 is maintained at a freezing temperature range of -18°C to -16°C, for example. Drawer-type storage containers 18 and 19 are stored in the small freezer compartment 26 and the freezer compartment 28, respectively.

小冷凍室２６の前方開口部は引き出し式の収納室扉２７で開閉される。収納室扉２７の庫内側の面に上記の収納容器１８が固定されている。また、冷凍室２８の前方開口部は引き出し式の冷凍室扉２９で開閉される。冷凍室扉２９の庫内側の面に上記の収納容器１９が固定されている。また、製氷室の前方開口部は引き出し式の製氷室扉（不図示）で開閉される。 A front opening of the small freezer compartment 26 is opened and closed by a drawer-type storage compartment door 27 . The storage container 18 is fixed to the inside surface of the storage chamber door 27 . A front opening of the freezer compartment 28 is opened and closed by a drawer-type freezer compartment door 29 . The storage container 19 is fixed to the inside surface of the freezer compartment door 29 . The front opening of the ice making chamber is opened and closed by a drawer-type ice making chamber door (not shown).

冷蔵空間の背後には、冷気を発生させる第１冷却器３０と、発生した冷気を循環させる第１ファン３２とが設けられている。第１冷却器３０で発生した冷気は、第１冷却器３０から上方へ向かって延びるダクト３４を通って、複数の吹出口３６から冷蔵空間へ吹き出る。冷蔵空間を循環した冷気は吸込口３８から第１冷却器３０へ向かって吸い込まれる。 A first cooler 30 for generating cold air and a first fan 32 for circulating the generated cold air are provided behind the refrigerating space. Cold air generated in the first cooler 30 passes through a duct 34 extending upward from the first cooler 30 and is blown out from a plurality of outlets 36 into the refrigerating space. The cool air that has circulated in the refrigerating space is sucked from the suction port 38 toward the first cooler 30 .

また、冷凍空間の背後には、冷気を発生させる第２冷却器３１と、発生した冷気を循環させる第２ファン３３とが設けられている。第２冷却器３１で発生した冷気は、冷凍空間の奥面に形成されている吹出口３５から冷凍空間へ吹き出て、冷凍空間を循環した後、冷凍空間の奥面に形成されている吸込口３７から第２冷却器３１へ向かって吸い込まれる。 A second cooler 31 that generates cold air and a second fan 33 that circulates the generated cold air are provided behind the frozen space. The cold air generated by the second cooler 31 is blown out into the freezing space from an outlet 35 formed on the inner surface of the freezing space, circulates in the freezing space, and then flows through the suction port formed on the inner surface of the freezing space. 37 is sucked toward the second cooler 31 .

冷蔵庫１０の下部後方には機械室１６が設けられている。機械室１６には圧縮機１７や凝縮器（不図示）等が収納されている。 A machine room 16 is provided in the lower rear portion of the refrigerator 10 . The machine room 16 houses a compressor 17, a condenser (not shown), and the like.

冷蔵室２０の天井４２には照明装置５０が設けられている。図示省略するが、冷蔵室２０内には、奥面（後ろの面）等の場所にも照明装置が設けられている。 A lighting device 50 is provided on the ceiling 42 of the refrigerator compartment 20 . Although not shown, the refrigerating compartment 20 is also provided with a lighting device on the inner surface (rear surface) or the like.

圧縮機１７、凝縮器、第１冷却器３０、第２冷却器３１等は周知の冷凍サイクル装置を構成している。圧縮機１７で圧縮された冷媒が第１冷却器３０及び第２冷却器３１に交互に流れ、冷媒が流れたときにそれぞれの冷却器３０、３１で冷気が発生する。 The compressor 17, the condenser, the first cooler 30, the second cooler 31, etc. constitute a well-known refrigeration cycle device. The refrigerant compressed by the compressor 17 alternately flows through the first cooler 30 and the second cooler 31, and cold air is generated in the respective coolers 30 and 31 when the refrigerant flows.

図２に示すように、冷蔵庫１０には制御部４３が設けられている。制御部４３には、操作パネル４５の他、扉センサ４４等の各種センサや、照明装置５０、圧縮機１７、第１ファン３２、第２ファン３３等の各種機器が接続されている。制御部４３は、操作パネル４５からの指示や各種センサによる検出信号に基づき、各種機器を制御する。制御部４３は、冷蔵室扉２１が開いたことを扉センサ４４が検知したときに照明装置５０を点灯し、冷蔵室扉２１が閉じたことを扉センサ４４が検知したときに照明装置５０を消灯する。 As shown in FIG. 2, refrigerator 10 is provided with control unit 43 . In addition to the operation panel 45 , various sensors such as the door sensor 44 and various devices such as the lighting device 50 , the compressor 17 , the first fan 32 and the second fan 33 are connected to the control unit 43 . The control unit 43 controls various devices based on instructions from the operation panel 45 and detection signals from various sensors. The control unit 43 turns on the lighting device 50 when the door sensor 44 detects that the refrigerating compartment door 21 is opened, and turns on the lighting device 50 when the door sensor 44 detects that the refrigerating compartment door 21 is closed. lights out.

制御部４３は制御基板６０（図３参照）に設けられている。制御基板６０の表面には不図示の回路パターンが設けられている。制御基板６０は筐体１１の上部の後部に設けられた基板収納部６１に収納されている。 The control unit 43 is provided on the control board 60 (see FIG. 3). A circuit pattern (not shown) is provided on the surface of the control board 60 . The control board 60 is housed in a board housing portion 61 provided in the upper rear portion of the housing 11 .

図３に冷蔵室２０の天井４２付近の前後方向の断面図を示す。天井４２は、内箱１３のうち、冷蔵室２０の上の面を形成する部分である。天井４２は、前方の傾斜面４２ａと、前後方向中央付近から後方にかけての水平面４２ｂとからなる面である。傾斜面４２ａは、前方が上で後方が下になる向きに傾斜している。 FIG. 3 shows a front-rear cross-sectional view of the vicinity of the ceiling 42 of the refrigerator compartment 20. As shown in FIG. The ceiling 42 is a portion of the inner box 13 that forms the upper surface of the refrigerator compartment 20 . The ceiling 42 is a surface composed of a front inclined surface 42a and a horizontal surface 42b extending from the vicinity of the center in the front-rear direction to the rear. The inclined surface 42a is inclined so that the front side is upward and the rear side is downward.

天井４２の水平面４２ｂには照明装置５０が設けられている。照明装置５０は、天井４２に開けられた開口５８に嵌合され、天井４２よりも上側にあたる筐体１１の内部に入り込んでいる。なお、以下の説明において、天井４２及び照明装置５０と、外箱１２との間の場所のことを「天井断熱部１４」とする。照明装置５０の天井断熱部１４に入り込んだ部分は、天井断熱部１４において、周囲の面（天井４２の裏面）に対して上に凸となっている。照明装置５０は、天井４２の前後方向及び左右方向のそれぞれの中央を含む場所に設けられている。 A lighting device 50 is provided on the horizontal surface 42 b of the ceiling 42 . The lighting device 50 is fitted in an opening 58 opened in the ceiling 42 and enters the inside of the housing 11 above the ceiling 42 . In the following description, the space between the ceiling 42 and lighting device 50 and the outer box 12 will be referred to as the "ceiling heat insulating part 14". The portion of the lighting device 50 that has entered the ceiling heat insulating portion 14 projects upward with respect to the surrounding surface (the back surface of the ceiling 42 ) in the ceiling heat insulating portion 14 . The lighting device 50 is provided at a location including the center of the ceiling 42 in the front-rear direction and the center in the left-right direction.

照明装置５０は、少なくとも、下に開口した箱形の覆い部５１と、覆い部５１の内部の前方に配置された複数の光源５２と、覆い部５１の内部で光源５２より後方に配置された導光板５３と、光源５２が接続された基板５５と、覆い部５１の開口を下から塞ぐ透光部材５４とから構成されている。 The illumination device 50 includes at least a box-shaped cover portion 51 opening downward, a plurality of light sources 52 arranged in front of the inside of the cover portion 51, and arranged behind the light sources 52 inside the cover portion 51. It is composed of a light guide plate 53, a substrate 55 to which a light source 52 is connected, and a translucent member 54 that closes the opening of the cover portion 51 from below.

光源５２は例えばＬＥＤからなる。複数の光源５２が左右方向（図３では紙面に垂直な方向）に並んでいる。これらの光源５２は後方すなわち導光板５３の方へ向かって光を照射する。導光板５３はアクリル等で出来た透明な直方体のものである。導光板５３は上から見て長方形で、その長方形の一辺に沿って複数の光源５２が並んでいる。また、基板５５は光源５２を点灯及び消灯させるための回路を有している。 The light source 52 consists of LED, for example. A plurality of light sources 52 are arranged in the left-right direction (the direction perpendicular to the paper in FIG. 3). These light sources 52 emit light backward, that is, toward the light guide plate 53 . The light guide plate 53 is a transparent rectangular parallelepiped made of acrylic or the like. The light guide plate 53 is rectangular when viewed from above, and a plurality of light sources 52 are arranged along one side of the rectangle. Also, the substrate 55 has a circuit for turning on and off the light source 52 .

覆い部５１は、光源５２及び導光板５３より天井断熱部１４側に位置している。また、覆い部５１は光源５２及び導光板５３を収納している。また、覆い部５１は、開口を下にして、天井４２に空けられた開口５８に嵌合されている。覆い部５１の上部は、天井４２よりも上に入り込んでいる。そのため、天井断熱部１４において、覆い部５１がその周囲よりも上に突出している。光源５２の一部又は全部及び導光板５３の一部又は全部も、天井４２よりも上にある。また、透光部材５４には透光性がある。 The cover portion 51 is located closer to the ceiling heat insulating portion 14 than the light source 52 and the light guide plate 53 are. Also, the cover portion 51 accommodates the light source 52 and the light guide plate 53 . Moreover, the cover portion 51 is fitted into an opening 58 formed in the ceiling 42 with the opening facing downward. The upper part of the cover part 51 is recessed above the ceiling 42 . Therefore, in the ceiling heat insulation part 14, the cover part 51 protrudes upward from its surroundings. Part or all of the light source 52 and part or all of the light guide plate 53 are also above the ceiling 42 . Further, the translucent member 54 has translucency.

光源５２が発光すると、光が導光板５３に入射して導光板５３の全体が明るくなる。導光板５３の全体が明るくなると、導光板５３の光が透光性のある透光部材５４を透過して冷蔵室２０の内部を照らす。 When the light source 52 emits light, the light enters the light guide plate 53 and the light guide plate 53 as a whole becomes bright. When the entire light guide plate 53 becomes bright, the light from the light guide plate 53 passes through the translucent member 54 and illuminates the interior of the refrigerator compartment 20 .

基板収納部６１は、外箱１２の上面の後部に形成された凹部６２と、凹部６２を上から覆う蓋６３とによって囲まれた空間である。凹部６２の底面は水平になっている。制御基板６０は基板収納部６１の内部に水平に配置されている。 The substrate housing portion 61 is a space surrounded by a recess 62 formed in the rear portion of the upper surface of the outer case 12 and a lid 63 covering the recess 62 from above. The bottom surface of the recess 62 is horizontal. The control board 60 is arranged horizontally inside the board housing portion 61 .

天井断熱部１４内から見ると、外箱１２の下面（天井断熱部１４側の面）は、基板収納部６１の下にあたる収納部下面６４と、その周囲の周囲面６５とを有している。そして、収納部下面６４は周囲面６５よりも低くなっている。換言すれば、外箱１２は、基板収納部６１の下にあたる部分が、基板収納部６１の下以外の部分よりも、低くなっている。収納部下面６４は、最も低い部分であり水平面である最下面６４ａと、最下面６４ａと周囲面６５とを連結する傾斜した連結面６４ｂとからなる。なお収納部下面６４は外箱１２の凹部６２の裏面である。 When viewed from inside the ceiling insulation part 14, the lower surface of the outer casing 12 (the surface on the side of the ceiling insulation part 14) has a storage part lower surface 64 under the substrate storage part 61 and a surrounding surface 65 therearound. . The storage portion lower surface 64 is lower than the peripheral surface 65 . In other words, the portion of the outer casing 12 under the substrate storage portion 61 is lower than the portion other than the substrate storage portion 61 . The lower surface 64 of the storage portion is composed of a lowermost surface 64a that is the lowest portion and is a horizontal surface, and an inclined connecting surface 64b that connects the lowermost surface 64a and the peripheral surface 65. As shown in FIG. Note that the storage portion lower surface 64 is the back surface of the recessed portion 62 of the outer box 12 .

基板収納部６１の前部分（基板収納部６１のうちの前の部分）の下に照明装置５０の後ろ部分（照明装置５０のうちの後ろの部分）が配置されている。ここで、基板収納部６１の前部分と照明装置５０の後ろ部分との間は空いている。そして、基板収納部６１の前部分と照明装置５０の後ろ部分とは上下方向に対向している。基板収納部６１の前部分と照明装置５０の後ろ部分とが上下方向に対向している場所の、両者の間の部分を、対向場所６６とする。対向場所６６においては、収納部下面６４の最下面６４ａと照明装置５０とが最も近くなっている。そして、対向場所６６においては、対向場所６６より前後の場所よりも、天井断熱部１４が上下に狭くなっている。このような対向場所６６は、天井断熱部１４における狭隘部である。 The rear portion of the lighting device 50 (the rear portion of the lighting device 50) is arranged below the front portion of the substrate housing portion 61 (the front portion of the substrate housing portion 61). Here, a space is provided between the front portion of the substrate housing portion 61 and the rear portion of the illumination device 50 . The front portion of the substrate housing portion 61 and the rear portion of the lighting device 50 face each other in the vertical direction. A facing portion 66 is defined as a portion between the front portion of the substrate housing portion 61 and the rear portion of the lighting device 50 , which face each other in the vertical direction. At the facing location 66, the lowermost surface 64a of the storage section lower surface 64 and the lighting device 50 are closest. At the opposing location 66 , the ceiling heat insulating portion 14 is narrower in the vertical direction than the locations before and after the opposing location 66 . Such a facing place 66 is a narrow part in the ceiling heat insulating part 14 .

天井断熱部１４には２つの真空断熱材４６が設けられている。２つの真空断熱材４６は前後に配置されている。そして、前方の真空断熱材４６の後ろ部分（真空断熱材４６のうちの後ろの部分）が、後方の真空断熱材４６の前部分（真空断熱材４６のうちの前の部分）の上に載っている。 The ceiling heat insulating part 14 is provided with two vacuum heat insulating materials 46 . Two vacuum insulators 46 are arranged in front and behind. Then, the rear portion of the front vacuum heat insulating material 46 (the rear portion of the vacuum heat insulating material 46) is placed on the front portion of the rear vacuum heat insulating material 46 (the front portion of the vacuum heat insulating material 46). ing.

後方の真空断熱材４６は照明装置５０の覆い部５１の上面５１ｃ（この上面が覆い部５１の最上部である）に貼り付けられている。貼り付けには貼り付け手段（例えば、両面テープや接着剤）が使用されている。貼り付け手段は、発泡断熱材４７とは別に設けられたものであり、真空断熱材４６を照明装置５０の覆い部５１等に貼り付ける手段である。また、この貼り付け手段は、天井断熱部１４への発泡断熱材４７の充填の前に貼り付けられる手段である。後方の真空断熱材４６は、その前端から後端までが照明装置５０の裏面に貼り付けられている。後方の真空断熱材４６は、照明装置５０及びその内部の導光板５３に沿って設けられていると言える。 The rear vacuum heat insulating material 46 is attached to the upper surface 51c of the cover portion 51 of the lighting device 50 (this upper surface is the uppermost portion of the cover portion 51). Attaching means (for example, double-sided tape or adhesive) is used for attachment. The sticking means is provided separately from the heat insulating foam material 47, and is a means for sticking the vacuum heat insulating material 46 to the cover portion 51 of the lighting device 50 or the like. Also, this pasting means is a means for pasting before filling the foamed heat insulating material 47 into the ceiling heat insulating portion 14 . The rear vacuum heat insulating material 46 is attached to the rear surface of the lighting device 50 from its front end to its rear end. It can be said that the rear vacuum heat insulating material 46 is provided along the lighting device 50 and the light guide plate 53 therein.

なお、沿うとは、近い（例えば、沿っているいずれかの物体の厚み以下の近さの）場所で平行になっていることを言う。真空断熱材４６が導光板５３に沿う形態としては、図示されているように真空断熱材４６と導光板５３との間に別の物体（覆い部５１の一部）が挟まれている形態の他、真空断熱材４６と導光板５３とが密着した形態及び真空断熱材４６と導光板５３との間に空間がある形態もあり得る。これらの形態における真空断熱材４６と導光板５３との間隔（すなわち、真空断熱材４６と導光板５３との対向面に垂直な方向の距離）は、例えば、真空断熱材４６及び導光板５３のいずれか厚い方の厚み以下である。 Note that along refers to being parallel at a location that is close (eg, no closer than the thickness of any object along which it is along). As a form in which the vacuum heat insulating material 46 extends along the light guide plate 53, another object (part of the cover portion 51) is sandwiched between the vacuum heat insulating material 46 and the light guide plate 53 as illustrated. In addition, a form in which the vacuum heat insulating material 46 and the light guide plate 53 are closely attached and a form in which there is a space between the vacuum heat insulating material 46 and the light guide plate 53 are also possible. The distance between the vacuum heat insulating material 46 and the light guide plate 53 in these forms (that is, the distance in the direction perpendicular to the opposing surfaces of the vacuum heat insulating material 46 and the light guide plate 53) is, for example, the distance between the vacuum heat insulating material 46 and the light guide plate 53 whichever is thicker or less.

後方の真空断熱材４６は、前方の真空断熱材４６よりも基板収納部６１に近い場所にある。しかし、後方の真空断熱材４６は、基板収納部６１と照明装置５０との上下方向の対向場所６６である狭隘部を避けて設けられている。また、後方の真空断熱材４６は、基板収納部６１の下にはなく、従って制御基板６０の下にも収納部下面６４の最下面６４ａの下にもない。 The vacuum heat insulating material 46 on the rear side is closer to the substrate housing portion 61 than the vacuum heat insulating material 46 on the front side. However, the rear vacuum heat insulating material 46 is provided so as to avoid the narrow space 66 where the board housing portion 61 and the lighting device 50 face each other in the vertical direction. Also, the rear vacuum heat insulating material 46 is not under the substrate housing portion 61, and therefore neither under the control substrate 60 nor under the lowest surface 64a of the housing lower surface 64. As shown in FIG.

また、後方の真空断熱材４６の後端は照明装置５０の後端よりも前にある。そして、上記の通り前方の真空断熱材４６が後方の真空断熱材４６よりも上であるため、前方の真空断熱材４６の上面、後方の真空断熱材４６の上面及び照明装置５０の上面の順に徐々に低くなる階段が形成されている。 Also, the rear end of the rear vacuum heat insulating material 46 is located forward of the rear end of the lighting device 50 . Since the front vacuum heat insulating material 46 is higher than the rear vacuum heat insulating material 46 as described above, the top surface of the front vacuum heat insulating material 46, the top surface of the rear vacuum heat insulating material 46, and the top surface of the lighting device 50 are arranged in this order. A gradual lower staircase is formed.

前方の真空断熱材４６は、後方の真空断熱材４６と同じ形状及び大きさのものである。前方の真空断熱材４６の後ろ部分は、貼り付け手段によって、後方の真空断熱材４６の前部分に貼り付けられている。前方の真空断熱材４６の前端は、天井４２の傾斜面４２ａの上にあり、傾斜面４２ａに近接している。ただし、前方の真空断熱材４６の前端と傾斜面４２ａとの間は空いている。 The front vacuum insulation 46 is of the same shape and size as the rear vacuum insulation 46 . The rear portion of the front vacuum insulation material 46 is attached to the front portion of the rear vacuum insulation material 46 by an attachment means. The front end of the front vacuum insulation material 46 is on the sloped surface 42a of the ceiling 42 and is adjacent to the sloped surface 42a. However, there is space between the front end of the front vacuum heat insulating material 46 and the inclined surface 42a.

また、図４のように、真空断熱材４６、照明装置５０、導光板５３、基板収納部６１及び制御基板６０は上から見て略長方形である。左右方向の幅は、真空断熱材４６、照明装置５０、導光板５３、基板収納部６１、制御基板６０の順に大きい。 Also, as shown in FIG. 4, the vacuum heat insulating material 46, the lighting device 50, the light guide plate 53, the substrate housing portion 61, and the control substrate 60 are substantially rectangular when viewed from above. The width in the left-right direction is larger in the order of the vacuum heat insulating material 46, the lighting device 50, the light guide plate 53, the substrate housing portion 61, and the control substrate 60.

図３のように、照明装置５０の覆い部５１より前で、前方の真空断熱材４６より下の部分（この部分を「覆い部前断熱部５９」とする）では、内箱１３に排気孔５６が設けられている。排気孔５６は、内箱１３を上下に貫通し、覆い部前断熱部５９と冷蔵室２０とを連通している。ここで連通とは、気体が通過できるように通じさせることを意味する。 As shown in FIG. 3, in front of the cover part 51 of the lighting device 50 and below the front vacuum heat insulating material 46 (this part is referred to as a "cover front heat insulating part 59"), the inner box 13 has an exhaust hole. 56 is provided. The exhaust hole 56 vertically penetrates the inner box 13 and communicates between the cover front heat insulating part 59 and the refrigerator compartment 20 . Here, communicating means communicating so that gas can pass through.

天井断熱部１４における、真空断熱材４６のない場所の全体に、発泡断熱材４７が充填されている。冷蔵庫１０の背面の上部の左右両側において、外箱１２に注入口４８（図３及び図５参照）が設けられている。この注入口４８から、発泡断熱材４７の原料である液体が注入される。注入口４８は不図示の蓋で閉塞される。なお、注入口４８の前方には、筐体１１の左右の壁部（貯蔵室の左右の側壁を形成する壁部）が芯材する。 A foam heat insulating material 47 is filled in the whole area of the ceiling heat insulating part 14 where the vacuum heat insulating material 46 is not provided. Injection ports 48 (see FIGS. 3 and 5) are provided in the outer casing 12 on both left and right sides of the upper portion of the rear surface of the refrigerator 10 . A liquid, which is a raw material of the foamed heat insulating material 47, is injected from the injection port 48. As shown in FIG. The inlet 48 is closed with a lid (not shown). The left and right walls of the housing 11 (the walls forming the left and right side walls of the storage chamber) serve as core members in front of the injection port 48 .

筐体１１の製造工程においては、まず、内箱１３に照明装置５０が取り付けられる。次に、照明装置５０の上面に１つ目の真空断熱材４６が貼り付けられる。次に、１つ目の真空断熱材４６の前方上面に、２つめの真空断熱材４６が貼り付けられる。なお、１つ目の真空断熱材４６と２つめの真空断熱材４６が貼り付けられた後に、照明装置５０に１つ目の真空断熱材４６が貼り付けられても良い。いずれにしろ、これにより、照明装置５０の上で、２つめの真空断熱材４６が前方、１つ目の真空断熱材４６が後方に配置される。 In the manufacturing process of the housing 11 , first, the lighting device 50 is attached to the inner box 13 . Next, the first vacuum heat insulating material 46 is attached to the upper surface of the lighting device 50 . Next, the second vacuum heat insulating material 46 is attached to the upper front surface of the first vacuum heat insulating material 46 . Note that the first vacuum heat insulating material 46 may be adhered to the lighting device 50 after the first vacuum heat insulating material 46 and the second vacuum heat insulating material 46 are adhered. In any case, this places the second vacuum heat insulating material 46 at the front and the first vacuum heat insulating material 46 at the rear on the lighting device 50 .

このとき、図６及び図７のように、前方の真空断熱材４６の前端部と天井４２の傾斜面４２ａとの間に、固体の発泡合成樹脂片５７が配置される。図７のように、真空断熱材４６に対して十分小さな発泡合成樹脂片５７が、真空断熱材４６の左右方向の複数箇所（図７の場合は３箇所）に配置される。それにより、発泡断熱材４７の充填前の段階で、真空断熱材４６と傾斜面４２ａとの間隔が確保される。 At this time, as shown in FIGS. 6 and 7, a solid foamed synthetic resin piece 57 is placed between the front end of the front vacuum heat insulating material 46 and the inclined surface 42a of the ceiling 42. As shown in FIGS. As shown in FIG. 7, foamed synthetic resin pieces 57 that are sufficiently small with respect to the vacuum heat insulating material 46 are arranged at a plurality of positions (three positions in the case of FIG. 7) of the vacuum heat insulating material 46 in the left-right direction. As a result, the space between the vacuum heat insulating material 46 and the inclined surface 42a is ensured before the foam heat insulating material 47 is filled.

この間隔が確保されるため、発泡断熱材４７の原料である液体が、発泡合成樹脂片５７と発泡合成樹脂片５７との間を通過することができる。そのため、前記液体が、真空断熱材４６よりも前方から、真空断熱材４６と天井４２の傾斜面４２ａとの間の空間へ侵入することができる。また、前記液体は、真空断熱材４６の左右両側からも、真空断熱材４６と天井４２の傾斜面４２ａとの間の空間へ侵入することができる。 Since this space is secured, the liquid, which is the raw material of the foamed heat insulating material 47 , can pass between the foamed synthetic resin pieces 57 and the foamed synthetic resin pieces 57 . Therefore, the liquid can enter the space between the vacuum heat insulating material 46 and the inclined surface 42 a of the ceiling 42 from the front side of the vacuum heat insulating material 46 . The liquid can also enter the space between the vacuum heat insulating material 46 and the inclined surface 42 a of the ceiling 42 from both the left and right sides of the vacuum heat insulating material 46 .

なお、発泡合成樹脂片５７が発泡断熱材４７と同じ原料からなる場合等は、天井断熱部１４への発泡断熱材４７の充填後、発泡合成樹脂片５７の存在がわからなくなる場合がある。 If the foamed synthetic resin pieces 57 are made of the same raw material as the foamed heat insulating material 47 , the presence of the foamed synthetic resin pieces 57 may not be recognized after the ceiling heat insulating portion 14 is filled with the foamed heat insulating material 47 .

次に、内箱１３に対して外箱１２が取り付けられ、それらが筐体１１となる。次に、筐体１１が、前方（貯蔵室の開口側）が下になり後方（冷蔵庫１０の背面側）が上になるように配置される。それにより外箱１２の２つの注入口４８が上を向く。次に、外箱１２の２つの注入口４８から発泡断熱材４７の原料である液体（ここでは、この液体及びこの液体が発泡中のもののことをまとめて「発泡合成樹脂」とする）が注入される。例えば、発泡断熱材４７がウレタンフォームからなる場合には、ウレタンフォームの原料であるポリオールとイソシアネートが注入口４８から注入される。 Next, the outer box 12 is attached to the inner box 13 to form the housing 11 . Next, the housing 11 is arranged so that the front side (opening side of the storage compartment) faces downward and the rear side (the rear side of the refrigerator 10) faces upward. The two inlets 48 of the outer casing 12 thereby face upwards. Next, a liquid that is the raw material of the foamed heat insulating material 47 (here, this liquid and the liquid that is being foamed are collectively referred to as "foamed synthetic resin") are injected from the two inlets 48 of the outer box 12. be done. For example, when the foamed heat insulating material 47 is made of urethane foam, polyol and isocyanate, which are raw materials of the urethane foam, are injected from the injection port 48 .

注入口４８から注入された発泡合成樹脂は、発泡しながら筐体１１の内部を流動する。発泡合成樹脂は、まずは下になっている貯蔵室の開口側の部分に溜まり、次第に冷蔵庫１０の背面側へ上昇して来る。図６（なお、発泡合成樹脂の注入中、図６の左側が下になっている）の矢印Ａのように、天井断熱部１４では、前方の真空断熱材４６、後方の真空断熱材４６及び照明装置５０が形成する上記の階段に沿って発泡合成樹脂が流れていく。天井断熱部１４にあった空気は、上昇する発泡合成樹脂によって徐々に押し上げられて、注入口４８から排出される。 The foamed synthetic resin injected from the inlet 48 flows inside the housing 11 while foaming. The foamed synthetic resin first collects in the opening side of the storage compartment below and gradually rises to the rear side of the refrigerator 10 . As shown by the arrow A in FIG. 6 (the left side of FIG. 6 is downward during the injection of the foamed synthetic resin), the ceiling heat insulating portion 14 includes the front vacuum heat insulating material 46, the rear vacuum heat insulating material 46, and the rear vacuum heat insulating material 46. Foamed synthetic resin flows along the stairs formed by the lighting device 50 . The air in the ceiling insulation part 14 is gradually pushed up by the rising synthetic resin foam and discharged from the inlet 48 .

また、図６の矢印Ｂのように、発泡合成樹脂は、前方の真空断熱材４６の前端と天井４２の傾斜面４２ａとの間を通過して覆い部前断熱部５９へも入り込む。覆い部前断熱部５９にあった空気は、内箱１３に開けられた上記の排気孔５６から排出される。ここで、前方の真空断熱材４６の前端と天井４２の傾斜面４２ａとの間が狭いため、覆い部前断熱部５９に発泡合成樹脂が侵入しにくいかに思われる。しかし、排気孔５６からの排気に伴い、発泡合成樹脂が真空断熱材４６の前端と天井４２の傾斜面４２ａとの間等を通過して覆い部前断熱部５９に侵入するように誘導される。 6, the foamed synthetic resin passes between the front end of the front vacuum heat insulating material 46 and the inclined surface 42a of the ceiling 42 and also enters the front heat insulating portion 59 of the cover portion. The air in the heat insulating part 59 in front of the cover part is discharged from the exhaust hole 56 opened in the inner box 13 . Here, since the space between the front end of the front vacuum heat insulating material 46 and the inclined surface 42a of the ceiling 42 is narrow, it seems that the foamed synthetic resin is less likely to enter the front heat insulating portion 59 of the cover portion. However, as the air is exhausted from the exhaust hole 56, the foamed synthetic resin is guided to pass between the front end of the vacuum heat insulating material 46 and the inclined surface 42a of the ceiling 42 and enter the cover front heat insulating portion 59. .

そして、発泡合成樹脂が天井断熱部１４に充填され、注入口４８及び排気孔５６にまで到達すると、発泡断熱材４７の充填が完了する。その後、注入口４８が蓋で閉塞される。排気孔５６用の蓋がある場合は、排気孔５６も蓋で閉塞される。 When the foamed synthetic resin fills the ceiling heat insulating portion 14 and reaches the injection port 48 and the exhaust hole 56, the filling of the foamed heat insulating material 47 is completed. After that, the inlet 48 is closed with a lid. If there is a lid for the vent hole 56, the vent hole 56 is also closed by the lid.

その後、機械室１６内の機器等が取り付けられて冷蔵庫１０が完成する。 After that, the equipment and the like in the machine room 16 are attached to complete the refrigerator 10 .

以上の構成の冷蔵庫１０は次のような効果を奏する。まず、冷蔵庫１０は、冷蔵室２０の天井４２に設けられた照明装置５０と、天井４２より上の天井断熱部１４と、天井断熱部１４に設けられた真空断熱材４６と、天井断熱部１４に充填された発泡断熱材４７とを有している。そして、天井断熱部１４において照明装置５０の覆い部５１に真空断熱材４６が取り付けられている。 The refrigerator 10 configured as described above has the following effects. First, the refrigerator 10 includes a lighting device 50 provided on the ceiling 42 of the refrigerator compartment 20, a ceiling heat insulating section 14 above the ceiling 42, a vacuum heat insulating material 46 provided in the ceiling heat insulating section 14, and a ceiling heat insulating section 14. It has a foam insulation material 47 filled in. A vacuum heat insulating material 46 is attached to the cover portion 51 of the lighting device 50 in the ceiling heat insulating portion 14 .

そのため、照明装置５０と真空断熱材４６との間に狭くて発泡合成樹脂の流動性の悪い隙間が形成されず、また真空断熱材４６の上の場所が広く確保されている。そのため、天井断熱部１４での発泡合成樹脂の流動性が良い。 As a result, a narrow gap with poor fluidity of the foamed synthetic resin is not formed between the lighting device 50 and the vacuum heat insulating material 46, and a large space above the vacuum heat insulating material 46 is ensured. Therefore, the foamed synthetic resin in the ceiling heat insulating portion 14 has good fluidity.

また、照明装置５０に断熱性の高い真空断熱材４６が貼り付けられているため、照明装置５０の結露を防ぐことができる。ここで、照明装置５０は導光板５３を備えるものだが、真空断熱材４６が導光板５３に沿って設けられているため、導光板５３の結露を防ぐことができる。 Moreover, since the vacuum heat insulating material 46 with high heat insulation is attached to the lighting device 50, dew condensation on the lighting device 50 can be prevented. Here, although the lighting device 50 is provided with the light guide plate 53 , the vacuum heat insulating material 46 is provided along the light guide plate 53 , so condensation on the light guide plate 53 can be prevented.

また、天井断熱部１４への発泡断熱材４７の充填前に照明装置５０の覆い部５１に真空断熱材４６が取り付けられていれば、真空断熱材４６の位置や姿勢を安定させることができ、その安定した状態を保ちながら天井断熱部１４へ発泡断熱材４７を充填することができる。 Further, if the vacuum heat insulating material 46 is attached to the cover portion 51 of the lighting device 50 before filling the foam heat insulating material 47 into the ceiling heat insulating portion 14, the position and posture of the vacuum heat insulating material 46 can be stabilized. The foamed heat insulating material 47 can be filled into the ceiling heat insulating part 14 while maintaining the stable state.

また、天井断熱部１４に複数の真空断熱材４６が設けられることにより、発泡合成樹脂の流動性が悪い場所を避けつつ広い範囲に真空断熱材４６を設けることが可能となっている。また、天井断熱部１４に２つの真空断熱材４６が設けられ、それら２つの真空断熱材４６が照明装置５０の上で重なりを有しているため、照明装置５０の結露防止の効果が高くなっている。 In addition, by providing a plurality of vacuum heat insulating materials 46 in the ceiling heat insulating portion 14, it is possible to provide the vacuum heat insulating materials 46 over a wide area while avoiding areas where the synthetic resin foam has poor fluidity. In addition, since the two vacuum heat insulating materials 46 are provided in the ceiling heat insulating part 14 and the two vacuum heat insulating materials 46 overlap on the lighting device 50, the dew condensation prevention effect of the lighting device 50 is enhanced. ing.

また、真空断熱材と４６して、前方の真空断熱材４６と後方の真空断熱材４６とが設けられ、後方の真空断熱材４６の前部分の上に前方の真空断熱材４６の後ろ部分が載ることにより、２つの真空断熱材４６が上下方向に重なりを有している。さらに、照明装置５０の後ろ部分が後方の真空断熱材４６の後ろ部分よりも後方にある。それにより、上記のように２つの真空断熱材４６と照明装置５０とからなる階段が形成され、発泡合成樹脂が前方から後方へ流動しやすくなっている。 A front vacuum heat insulating material 46 and a rear vacuum heat insulating material 46 are provided as the vacuum heat insulating material 46 , and the rear portion of the front vacuum heat insulating material 46 is placed on top of the front portion of the rear vacuum heat insulating material 46 . By being placed, the two vacuum heat insulating materials 46 overlap in the vertical direction. Furthermore, the rear portion of the lighting device 50 is further rearward than the rear portion of the rear vacuum insulation 46 . As a result, steps are formed by the two vacuum heat insulating materials 46 and the lighting device 50 as described above, and the foamed synthetic resin can easily flow from the front to the rear.

また、天井断熱部１４の上面が基板収納部６１の下の場所においてその周囲の場所よりも低くなり、基板収納部６１の前部分と照明装置５０の後ろ部分とが上下方向に間を空けつつ対向した対向場所６６が形成されている。この対向場所６６は狭隘部となっているが、真空断熱材４６がこの狭隘部を避けて設けられているため、発泡合成樹脂の流動性が阻害されない。 In addition, the upper surface of the ceiling heat insulating part 14 is lower than the surrounding area at the place under the board storage part 61, and the front part of the board storage part 61 and the rear part of the lighting device 50 are spaced in the vertical direction. Opposed facing locations 66 are formed. Although this facing place 66 is a narrowed portion, the vacuum heat insulating material 46 is provided so as to avoid this narrowed portion, so that the fluidity of the foamed synthetic resin is not hindered.

また、前方の真空断熱材４６の下で照明装置５０の覆い部５１の前である覆い部前断熱部５９と、冷蔵室２０とを連通する排気孔５６が天井４２に形成されている。そのため、筐体１１の内部に発泡合成樹脂が充填されるときに、照明装置５０、前方の真空断熱材４６及び天井４２の傾斜面４２ａによって囲まれた場所の空気が照明装置５０の前端付近の場所で滞留しそうになっても排気孔５６から排出される。また、前方の真空断熱材４６の前端と天井４２の傾斜面４２ａとの間隔が狭いために発泡合成樹脂が覆い部前断熱部５９に侵入しにくいように思われるが、排気孔５６から空気が排出されることにより発泡合成樹脂が覆い部前断熱部５９に誘導されやすくなる。 In addition, an exhaust hole 56 is formed in the ceiling 42 to communicate between the cover front heat insulation part 59 in front of the cover part 51 of the lighting device 50 under the front vacuum heat insulation material 46 and the refrigerator compartment 20 . Therefore, when the inside of the housing 11 is filled with foamed synthetic resin, the air in the area surrounded by the lighting device 50 , the vacuum insulation material 46 in front, and the inclined surface 42 a of the ceiling 42 is in the vicinity of the front end of the lighting device 50 . Even if it is likely to stay at a place, it is discharged from the exhaust hole 56. - 特許庁In addition, it seems that the foamed synthetic resin does not easily enter the cover front heat insulating portion 59 because the space between the front end of the front vacuum heat insulating material 46 and the inclined surface 42a of the ceiling 42 is narrow, but the air escapes from the exhaust hole 56. By being discharged, the foamed synthetic resin is more likely to be guided to the cover front heat insulating portion 59 .

また、照明装置５０が、導光板５３と、導光板５３に光を照射する光源５２とを有するものであるため、導光板５３の全体が光ることにより広い範囲を明るくすることができる。また、光源５２が導光板５３よりも前に配置され後方へ光を照射するため、冷蔵庫１０の利用者に光源５２が見えず、照明装置５０の見栄えが良い。 In addition, since the illumination device 50 has the light guide plate 53 and the light source 52 that irradiates the light guide plate 53 with light, the light guide plate 53 as a whole can illuminate a wide area. In addition, since the light source 52 is arranged in front of the light guide plate 53 and emits light backward, the user of the refrigerator 10 cannot see the light source 52, and the illumination device 50 looks good.

次に、変更例について説明する。 Next, a modified example will be described.

図８の変更例においては、前方と後方にそれぞれ１つずつ真空断熱材４６が設けられている。前方の真空断熱材４６は、照明装置５０の上に載って照明装置５０と上下方向に重なりを有し、照明装置５０に貼り付けられている。ここで、前方の真空断熱材４６の前端は照明装置５０の前端より前に配置されている。また、前方の真空断熱材４６の後端が照明装置５０の後端より前に配置されている。そして、前方の真空断熱材４６の上面と照明装置５０の上面とが、後方に向かって低くなる階段を形成している。 In the modified example of FIG. 8, one vacuum heat insulating material 46 is provided at the front and one at the rear. The front vacuum heat insulating material 46 is placed on the lighting device 50 , overlaps the lighting device 50 in the vertical direction, and is attached to the lighting device 50 . Here, the front end of the front vacuum insulation material 46 is arranged in front of the front end of the lighting device 50 . Also, the rear end of the front vacuum heat insulating material 46 is arranged in front of the rear end of the lighting device 50 . The upper surface of the front vacuum heat insulating material 46 and the upper surface of the lighting device 50 form a staircase that becomes lower toward the rear.

また、図８の変更例において、後方の真空断熱材４６は照明装置５０より後方に配置されている。そのため、真空断熱材４６は、基板収納部６１と照明装置５０との対向場所６６を避けて配置されていることになる。後方の真空断熱材４６の前端は照明装置５０の後端と接触している。 In addition, in the modified example of FIG. 8, the rear vacuum heat insulating material 46 is arranged behind the lighting device 50 . Therefore, the vacuum heat insulating material 46 is arranged so as to avoid the facing place 66 between the substrate housing portion 61 and the lighting device 50 . The front end of the rear vacuum insulator 46 is in contact with the rear end of the lighting device 50 .

また、図９のように、天井断熱部１４の真空断熱材４６の数は１つでも良い。図９の変更例において、真空断熱材４６は前後に長く、その前端は照明装置５０の前端より前方にあり、その後端は照明装置５０の後端より後方にある。真空断熱材４６の後ろ部分は、基板収納部６１及びその内部の制御基板６０と上下方向に重なりを有している。このように重なりを有することにより、基板収納部６１で発熱が生じたとしても、その熱が真空断熱材４６の後ろ部分によって断熱される。 Moreover, as shown in FIG. 9, the number of the vacuum heat insulating materials 46 of the ceiling heat insulating part 14 may be one. In the modification of FIG. 9, the vacuum insulator 46 is longitudinally long, with its front end forward of the front end of the lighting device 50 and its rear end rearward of the rear end of the lighting device 50 . The rear portion of the vacuum heat insulating material 46 vertically overlaps the substrate housing portion 61 and the control substrate 60 therein. With such an overlap, even if heat is generated in the substrate housing portion 61 , the heat is insulated by the rear portion of the vacuum heat insulating material 46 .

また、図示省略するが、天井断熱部１４の真空断熱材４６は３つ以上でも良い。 Although not shown, the ceiling heat insulating section 14 may have three or more vacuum heat insulating materials 46 .

また、図１０では、図３の場合と同様に、照明装置１５０の上部が天井断熱部１４に入り込んでいる。そして、照明装置１５０のうち天井断熱部１４に入り込んだ部分が、天井断熱部１４において、周囲の面に対して上に凸となっている。 Also, in FIG. 10, the upper part of the lighting device 150 enters the ceiling heat insulating part 14 as in the case of FIG. A portion of the lighting device 150 that has entered the ceiling heat insulating portion 14 projects upward with respect to the surrounding surface of the ceiling heat insulating portion 14 .

ただし、図３の場合と異なり、照明装置１５０の覆い部１５１には、覆い部１５１の下端の縁から水平方向へ延長されたフランジ形状の延長部１５２が設けられている。覆い部１５１は、天井断熱部１４に入り込み、天井断熱部１４において周囲の面に対して上に凸となっている。また、覆い部１５１から前方に向かって上記の延長部１５２が延長されている。そして延長部１５２が内箱１３と上下方向に重なりを有している。 However, unlike the case of FIG. 3, the cover portion 151 of the lighting device 150 is provided with a flange-shaped extension portion 152 that extends horizontally from the edge of the lower end of the cover portion 151 . The cover part 151 enters the ceiling heat insulating part 14 and protrudes upward with respect to the surrounding surface of the ceiling heat insulating part 14 . Further, the extension portion 152 is extended forward from the cover portion 151 . The extension 152 overlaps the inner box 13 in the vertical direction.

この、延長部１５２と内箱１３とが上下方向に重なっている部分に、延長部１５２と内箱１３とを上下に貫通する排気孔１５６が設けられている。この排気孔１５６は、発泡断熱材４７の天井断熱部１４への充填時の排気孔として利用される。排気孔１５６は、覆い部１５１より前にあるため、照明装置１５０の場所で空気が滞留しにくく排出されやすい。 An exhaust hole 156 vertically penetrating through the extension 152 and the inner box 13 is provided at the portion where the extension 152 and the inner box 13 overlap in the vertical direction. This exhaust hole 156 is used as an exhaust hole when filling the ceiling heat insulating portion 14 with the foam heat insulating material 47 . Since the exhaust hole 156 is located in front of the cover portion 151, the air is less likely to stay at the location of the lighting device 150 and is easily discharged.

また、図１１では、照明装置２５０の覆い部２５１の前部分（詳細には、覆い部２５１のうち、後方の真空断熱材４６の前端より前の部分）の上に前方の真空断熱材４６がある。覆い部２５１の前部分と前方の真空断熱材４６とが上下方向に離れており、覆い部２５１の前部分と前方の真空断熱材４６との間の部分である離隔部２５５が形成されている。そして、覆い部２５１の前端の上部に傾斜面２５１ａが形成されている。その傾斜面２５１ａに、天井断熱部１４の離隔部２５５から覆い部２５１の下の空間（具体的には照明装置２５０の内部）まで貫通する排気孔２５６が設けられている。 11, the front vacuum heat insulating material 46 is placed on the front portion of the cover portion 251 of the lighting device 250 (more specifically, the portion of the cover portion 251 in front of the front end of the rear vacuum heat insulating material 46). be. The front portion of the cover portion 251 and the front vacuum heat insulating material 46 are separated in the vertical direction, and a separation portion 255 is formed between the front portion of the cover portion 251 and the front vacuum heat insulating material 46. . An inclined surface 251 a is formed on the upper portion of the front end of the cover portion 251 . The inclined surface 251a is provided with an exhaust hole 256 penetrating from the separating portion 255 of the ceiling heat insulating portion 14 to the space under the cover portion 251 (specifically, the inside of the lighting device 250).

図１１の変更例においては、天井断熱部１４に発泡断熱材４７が充填されるときに、天井断熱部１４の空気が排気孔２５６を通って排出される。このとき、発泡断熱材４７が排気孔２５６から照明装置２５０の内部に漏れることがあるが、冷蔵室２０の内部と違って漏れた発泡断熱材４７が利用者に目視されるおそれがないので、漏れた発泡断熱材４７を除去しなくても良い。また、この排気孔２５６があるため、照明装置２５０の場所で空気が滞留しにくく排出されやすい。 In the modified example of FIG. 11 , the air in the ceiling heat insulating portion 14 is discharged through the exhaust holes 256 when the ceiling heat insulating portion 14 is filled with the foam heat insulating material 47 . At this time, the heat insulating foam material 47 may leak into the interior of the lighting device 250 from the exhaust hole 256, but unlike the inside of the refrigerating compartment 20, the leaking heat insulating foam material 47 is not likely to be seen by the user. It is not necessary to remove the leaked foam insulation material 47 . In addition, due to the presence of this exhaust hole 256, the air is less likely to stay at the location of the lighting device 250 and is easily discharged.

なお、図８～１０の変更例においても、図１１と同様に、覆い部５１、１５１の前端上部に傾斜面が形成され、その傾斜面に天井断熱部１４と覆い部５１、１５１の下の空間とを連通する排気孔が設けられても良い。 8 to 10, similarly to FIG. 11, an inclined surface is formed on the upper front end of the cover portions 51 and 151, and the inclined surface is provided under the ceiling heat insulating portion 14 and the cover portions 51 and 151. An exhaust hole communicating with the space may be provided.

また、照明装置５０において、光源５２の場所は導光板５３より前に限定されない。光源５２は導光板５３のいずれか一端側に設けられていれば良い。ただし、光源５２は、導光板５３と真空断熱材４６との間の場所でもある導光板５３より上の場所は避けて設けられる。また、光源５２は、導光板５３より下の場所も避けて設けられる。 Moreover, in the illumination device 50 , the location of the light source 52 is not limited to the position in front of the light guide plate 53 . The light source 52 may be provided at one end of the light guide plate 53 . However, the light source 52 is provided to avoid a place above the light guide plate 53 which is also a place between the light guide plate 53 and the vacuum heat insulating material 46 . Also, the light source 52 is provided so as to avoid a place below the light guide plate 53 as well.

また、真空断熱材４６の代わりに別の断熱部材が使用されても良い。断熱部材は、発泡断熱材４７とは別の断熱部材である。 Also, another heat insulating member may be used instead of the vacuum heat insulating material 46 . The heat insulating member is a heat insulating member different from the foam heat insulating material 47 .

また、照明装置５０の覆い部５１への真空断熱材４６の取り付けには、貼り付け手段以外の取り付け手段が用いられても良い。取り付け手段としては、ネジや、覆い部５１と真空断熱材４６との両方に形成された係合形状部等が挙げられる。そのような取り付け手段で真空断熱材４６が覆い部５１に取り付けられることにより、発泡断熱材４７の充填前や充填中に、真空断熱材４６の位置及び姿勢を安定させることができる。また、真空断熱材４６同士も、貼り付け手段以外の取り付け手段によって取り付けられても良い。 Further, for attaching the vacuum heat insulating material 46 to the cover portion 51 of the lighting device 50, attachment means other than the attaching means may be used. Examples of the mounting means include screws, engaging shapes formed on both the cover portion 51 and the vacuum heat insulating material 46, and the like. By attaching the vacuum heat insulating material 46 to the cover portion 51 with such an attaching means, the position and attitude of the vacuum heat insulating material 46 can be stabilized before or during filling of the foam heat insulating material 47 . Also, the vacuum heat insulating materials 46 may be attached to each other by attachment means other than the attachment means.

また、上記実施形態では天井４２は内箱１３の一部であったが、内箱１３とは別の部材で天井が形成されても良い。 Moreover, although the ceiling 42 is a part of the inner box 13 in the above embodiment, the ceiling may be formed of a member different from the inner box 13 .

また、基板収納部６１と照明装置５０との位置関係は上記実施形態の関係に限定されない。例えば、基板収納部６１が筐体１１の前後方向の中央に設けられ、基板収納部６１の真下に照明装置５０が設けられても良い。いずれにしろ、基板収納部６１と照明装置５０との間の場所において天井断熱部１４がその周囲の場所よりも狭くなっており（具体例としては上下方向の長さが短くなっており）、その場所が狭隘部として形成されている場合は、その狭隘部を避けて真空断熱材４６が設けられることが好ましい。 Further, the positional relationship between the substrate housing portion 61 and the lighting device 50 is not limited to the relationship in the above embodiment. For example, the substrate housing portion 61 may be provided in the center of the housing 11 in the front-rear direction, and the lighting device 50 may be provided directly below the substrate housing portion 61 . In any case, the ceiling heat insulating portion 14 is narrower than the surrounding portion in the place between the board housing portion 61 and the lighting device 50 (as a specific example, the length in the vertical direction is shorter), If the place is formed as a narrowed portion, it is preferable that the vacuum heat insulating material 46 is provided avoiding the narrowed portion.

１０…冷蔵庫、１１…筐体、１２…外箱、１３…内箱、１４…天井断熱部、１５…断熱仕切壁、１６…機械室、１７…圧縮機、１８…収納容器、１９…収納容器、２０…冷蔵室、２１…冷蔵室扉、２２…野菜室、２３…野菜室扉、２４…載置棚、２６…小冷凍室、２７…収納室扉、２８…冷凍室、２９…冷凍室扉、３０…第１冷却器、３１…第２冷却器、３２…第１ファン、３３…第２ファン、３４…ダクト、３５…吹出口、３６…吹出口、３７…吸込口、３８…吸込口、３９…チルド室、４０…引き出し式容器、４１…上側容器、４２…天井、４２ａ…傾斜面、４２ｂ…水平面、４３…制御部、４４…扉センサ、４５…操作パネル、４６…真空断熱材、４７…発泡断熱材、４８…注入口、５０…照明装置、５１…覆い部、５１ｃ…上面、５２…光源、５３…導光板、５４…透光部材、５５…基板、５６…排気孔、５７…発泡合成樹脂片、５８…開口、５９…覆い部前断熱部、６０…制御基板、６１…基板収納部、６２…凹部、６３…蓋、６４…収納部下面、６４ａ…最下面、６４ｂ…連結面、６５…周囲面、６６…対向場所、１５０…照明装置、１５１…覆い部、１５２…延長部、１５６…排気孔、２５０…照明装置、２５１…覆い部、２５１ａ…傾斜面、２５５…離隔部、２５６…排気孔 DESCRIPTION OF SYMBOLS 10... Refrigerator, 11... Case, 12... Outer box, 13... Inner box, 14... Ceiling heat insulation part, 15... Heat insulation partition wall, 16... Machine room, 17... Compressor, 18... Storage container, 19... Storage container , 20... refrigerating compartment, 21... refrigerating compartment door, 22... vegetable compartment, 23... vegetable compartment door, 24... placing shelf, 26... small freezer compartment, 27... storage compartment door, 28... freezer compartment, 29... freezer compartment Door 30 First cooler 31 Second cooler 32 First fan 33 Second fan 34 Duct 35 Outlet 36 Outlet 37 Suction port 38 Suction Mouth 39 Chilled chamber 40 Drawer type container 41 Upper container 42 Ceiling 42a Inclined surface 42b Horizontal surface 43 Control unit 44 Door sensor 45 Operation panel 46 Vacuum insulation Material 47 Foam heat insulating material 48 Inlet 50 Lighting device 51 Cover 51c Upper surface 52 Light source 53 Light guide plate 54 Translucent member 55 Substrate 56 Exhaust hole , 57... foamed synthetic resin piece, 58... opening, 59... heat insulating part in front of cover part, 60... control board, 61... board storage part, 62... concave part, 63... lid, 64... bottom surface of storage part, 64a... bottom surface, 64b... Connection surface 65... Surrounding surface 66... Opposite place 150... Lighting device 151... Cover part 152... Extension part 156... Exhaust hole 250... Lighting device 251... Cover part 251a... Inclined surface, 255... Separating portion, 256... Exhaust hole

Claims

前方に開口部を有する貯蔵室と、前記貯蔵室の天井と、前記天井より上の天井断熱部と、前記天井に設けられた照明装置と、前記天井断熱部に充填された発泡断熱材と、前記発泡断熱材と異なる部材であり前記天井断熱部に設けられた部材である断熱部材と、を有する冷蔵庫において、
前記照明装置は、光源と、前記光源より前記天井断熱部側に位置する覆い部とを含み、
前記天井断熱部において前記覆い部に前記断熱部材が取り付けられたことを特徴とする冷蔵庫。 A storage room having an opening in front, a ceiling of the storage room, a ceiling insulation part above the ceiling, a lighting device provided on the ceiling, and a foam insulation material filled in the ceiling insulation part, In a refrigerator having a heat insulating member that is a member different from the foam heat insulating material and is a member provided in the ceiling heat insulating part,
The lighting device includes a light source and a covering portion positioned closer to the ceiling heat insulating portion than the light source,
A refrigerator, wherein the heat insulating member is attached to the cover portion in the ceiling heat insulating portion.

前記天井断熱部に複数の前記断熱部材が設けられた、請求項１に記載の冷蔵庫。 2. The refrigerator according to claim 1, wherein said ceiling heat insulating part is provided with a plurality of said heat insulating members.

前記天井断熱部に少なくとも２つの前記断熱部材が設けられ、２つの前記断熱部材が前記照明装置の上で重なりを有する、請求項２に記載の冷蔵庫。 3. The refrigerator according to claim 2, wherein at least two of said heat insulating members are provided in said ceiling heat insulating part, and two of said heat insulating members have an overlap above said lighting device.

前記断熱部材として、前方の断熱部材と後方の断熱部材とが設けられ、
前記覆い部に前記後方の断熱部材が取り付けられ、前記後方の断熱部材の前部分の上に前記前方の断熱部材の後ろ部分が載ることにより、前記前方の断熱部材と前記後方の断熱部材とが上下方向に重なりを有し、
前記照明装置の後端が前記後方の断熱部材の後端よりも後方にある、
請求項２又は３に記載の冷蔵庫。 As the heat insulating member, a front heat insulating member and a rear heat insulating member are provided,
The rear heat insulating member is attached to the cover portion, and the rear portion of the front heat insulating member rests on the front portion of the rear heat insulating member, so that the front heat insulating member and the rear heat insulating member are connected. having an overlap in the vertical direction,
The rear end of the lighting device is located rearward from the rear end of the rear heat insulating member,
The refrigerator according to claim 2 or 3.

前記断熱部材の前端が前記照明装置の前端より前に配置され、前記断熱部材が前記照明装置の上に載った、請求項１に記載の冷蔵庫。 2. The refrigerator according to claim 1, wherein the front end of said heat insulating member is arranged in front of the front end of said lighting device, and said heat insulating member rests on said lighting device.

基板が収納される基板収納部が前記天井断熱部より上に設けられ、
前記基板収納部と前記照明装置との間に前記天井断熱部が狭くなった狭隘部が形成され、前記狭隘部を避けて前記断熱部材が設けられた、請求項１～５のいずれか１項に記載の冷蔵庫。 A substrate storage portion for storing substrates is provided above the ceiling heat insulating portion,
6. A narrowed portion formed by narrowing the ceiling heat insulating portion is formed between the substrate housing portion and the lighting device, and the heat insulating member is provided to avoid the narrow portion. Refrigerator as described.

前記覆い部に取り付けられたものと同一又はそれとは別の前記断熱部材の下に、前記天井断熱部における前記覆い部より前の部分である覆い部前断熱部が存在し、前記覆い部前断熱部と前記貯蔵室とを連通する排気孔が前記天井に設けられた、請求項１～６のいずれか１項に記載の冷蔵庫。 A cover front heat insulation part, which is a portion of the ceiling heat insulation part in front of the cover part, is present under the heat insulation member that is the same as or different from that attached to the cover part, and the cover front heat insulation part is present. 7. The refrigerator according to any one of claims 1 to 6, wherein the ceiling is provided with an exhaust hole communicating between the storage compartment and the storage compartment.

前記断熱部材の前記覆い部への取り付け部分より前に、前記覆い部に取り付けられたものと同一又はそれとは別の前記断熱部材と前記覆い部とが上下に離れた離隔部が存在し、前記離隔部と前記覆い部の下の空間とを連通する排気孔が前記覆い部に設けられた、請求項１～６に記載の冷蔵庫。 A separation portion is provided in front of a portion where the heat insulating member is attached to the cover portion, in which the heat insulating member, which is the same as or different from the one attached to the cover portion, and the cover portion are vertically separated, and The refrigerator according to any one of claims 1 to 6, wherein said cover portion is provided with an exhaust hole communicating between said separating portion and a space under said cover portion.

前記天井断熱部への前記発泡断熱材の注入口が冷蔵庫の後部に設けられた、請求項１～８のいずれか１項に記載の冷蔵庫。 9. The refrigerator according to any one of claims 1 to 8, wherein an injection port for said foamed heat insulating material to said ceiling heat insulating portion is provided at a rear portion of said refrigerator.

前記照明装置が、導光板と、前記導光板の一端側に設けられ前記導光板に向かって光を照射する光源とを有し、前記断熱部材が前記導光板に沿って設けられ、前記光源が前記断熱部材と前記導光板との間を避けて設けられた、請求項１～９のいずれか１項に記載の冷蔵庫。 The lighting device includes a light guide plate and a light source provided on one end side of the light guide plate for irradiating light toward the light guide plate, the heat insulating member is provided along the light guide plate, and the light source is provided along the light guide plate. 10. The refrigerator according to any one of claims 1 to 9, which is provided so as to avoid a space between said heat insulating member and said light guide plate.

前記光源が前記導光板よりも前に配置され後方へ光を照射する、請求項１０に記載の冷蔵庫。 11. The refrigerator according to claim 10, wherein said light source is arranged in front of said light guide plate and emits light backward.