JP2012255606A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which includes an illumination means for illuminating the inside of a storage chamber and in which the food housed in the storage chamber is hardly abutted on the illumination means and which has an excellent thermal insulating effect.SOLUTION: The refrigerator includes: a thermal insulation box body which is formed to have a box-like shape while arranging a thermal insulation member between an outer box and an inner box and in which the storage chamber is formed in the inner box; and the illumination means for illuminating the inside of the storage chamber. The illumination means is arranged in the inner box in a corner part formed by two adjacent walls.

Description

  Embodiments of the present invention relate to a refrigerator.

Conventionally, a configuration has been proposed in which illumination means is provided on the ceiling of a refrigerator storage room, for example, a refrigerator compartment, to illuminate the storage room.
In the configuration in which the illumination means protrudes toward the storage room, there may be a problem that the food hits the illumination means when food is stored in the storage room. Therefore, it is conceivable that the inner box is recessed toward the outer box and the illumination means is fitted into the recessed portion. However, in that configuration, there is a problem that the heat insulating member provided between the outer box and the recessed inner box becomes thin and the heat insulating effect becomes insufficient.

JP 2005-344976 A

  In view of this, a refrigerator is provided that includes an illuminating unit that illuminates the interior of the storage room, and the food stored in the storage room is less likely to hit the illuminating unit and has a good heat insulating effect.

  The refrigerator of the present embodiment is provided with a heat insulating member between the outer box and the inner box to form a box and form a storage room inside the inner box, and an illuminating means for illuminating the storage room. I have. And it is characterized by the illumination means being provided in the corner part formed by two adjacent walls in an inner box.

The perspective view which looked at the heat insulation box which comprises the refrigerator which shows 1st Embodiment, and the illuminating device from front upper direction Perspective view of refrigerator The perspective view which looked at the heat insulation box and the lighting device from the front lower part Cross-sectional plan view showing the vicinity of the corner on the left back side of the inner box in an enlarged manner Exploded perspective view of split insulation panel Exploded perspective view of heat insulation box Sectional drawing which expands and shows the edge part vicinity of an illuminating device The top view which expands and shows a part of light-guide plate FIG. 4 equivalent view showing the second embodiment FIG. 4 equivalent view showing the third embodiment FIG. 4 equivalent view showing the fourth embodiment Perspective view of lighting device FIG. 3 equivalent view showing another embodiment

  A plurality of embodiments will be described with reference to the drawings. In addition, when showing a direction with reference to drawings, the door side of a refrigerator is demonstrated as "front side" for convenience, and the right side when the refrigerator is seen from the front is described as "right side".

(First embodiment)
The first embodiment will be described below with reference to FIGS.
First, the refrigerator 11 shown in FIG. 2 includes the heat insulation box 12 shown in FIGS. 1 to 4 and a refrigeration cycle (not shown) for cooling the inside of the heat insulation box 12. As shown in FIG. 4, the heat insulating box 12 includes an outer box 13, an inner box 14, and a heat insulating member 15 provided between the outer box 13 and the inner box 14. And as shown in FIG.1 and FIG.3, the heat insulation box 12 is comprised by the box shape which the front surface opened, and forms the store room mentioned later inside.

  The outer box 13 is made of steel and has a box shape with an open front surface. The outer box 13 is configured by combining a plurality of walls obtained by dividing the outer box 13 into a plurality of parts. Specifically, the outer box 13 includes a plate-like top wall 16, a plate-like bottom wall 17, a plate-like right wall 18, a plate-like left wall 19, and a plate-like back wall 20. It is configured. The top wall 16 has a step shape in the front-rear direction, the front part is a flat plate shape parallel to the bottom wall 17, and the rear part is located below the front part and is a flat plate shape parallel to the bottom wall 17. Yes. The right side wall 18 and the left side wall 19 are formed symmetrically. A machine room 21 is formed on the rear portion of the top wall 16 as shown in FIG. The machine room 21 is provided with a compressor, a condenser, and the like (not shown) that constitute the refrigeration cycle described above.

  The inner box 14 is made of resin, has a box shape with an open front, and is provided inside the outer box 13 as shown in FIGS. 1 and 3. The inner box 14 is configured by combining a plurality of walls formed by dividing the inner box 14 into a plurality of parts. Specifically, the inner box 14 includes a plate-like top wall 22, a plate-like bottom wall 23, a plate-like right wall 24, a plate-like left wall 25, and a plate-like back wall 26. It is configured. Similarly to the upper surface wall 16 of the outer box 13, the upper surface wall 22 of the inner box 14 has a step shape in the front-rear direction, the front part forms a flat plate shape parallel to the bottom wall 23, and the rear part is lower than the front part. It is located in a flat plate shape parallel to the bottom wall 23. The right surface wall 24 and the left surface wall 25 are formed symmetrically.

  The top wall 16 of the outer box 13 and the top wall 22 of the inner box 14, the bottom wall 17 of the outer box 13 and the bottom wall 23 of the inner box 14, the right wall 18 of the outer box 13 and the right wall 24 of the inner box 14, the outer box The left side wall 19 of 13 and the left side wall 25 of the inner box 14, the back wall 20 of the outer box 13 and the back wall 26 of the inner box 14 are provided to face each other with the heat insulating member 15 interposed therebetween. FIG. 4 shows a part of the state in which the left wall 19 of the outer box 13 and the left wall 25 of the inner box 14 face each other, and the rear wall 20 of the outer box 13 and the rear wall 26 of the inner box 14 face each other. Show.

  Specifically, the heat insulation member 15 is a general vacuum heat insulation panel, and includes a core material and an outer bag body that accommodates the core material, and has a flat plate shape. The core material was formed by compressing and curing a highly heat-insulating material, for example, a laminate of inorganic fibers such as glass wool, into an inner bag (not shown) made of a synthetic resin film such as polyethylene, and then compressing and curing it into a rectangular plate shape. Is. The core material may be formed by, for example, a paper making method, a heat compression method, or the like. The outer bag body is a bag having gas barrier properties, for example, a polyethylene terephthalate film, a high-density polyethylene film, an aluminum vapor-deposited film, an aluminum foil sheet, etc., which are appropriately combined and formed into a bag shape. And the heat insulation member 15 is comprised by sealing the opening part of an outer bag body by heat welding etc., decompressing the said outer bag body in the state which accommodated the core material in the outer bag body, and maintaining pressure reduction. Yes.

  One surface of the heat insulating member 15 in the plate thickness direction is bonded to the outer surface of the inner box 14, and the other surface opposite to the first surface is bonded to the inner surface of the outer box 13. As an example in FIG. 5, a configuration in which a heat insulating member 15 is provided between the left side wall 19 of the outer case 13 and the left side wall 25 of the inner case 14 provided to face the left side wall 19 of the outer case 13. Show. An adhesive 31 is provided between the heat insulating member 15 and the inner surface of the outer box 13 in this case between the left wall 19 and the heat insulating member 15 and the left wall 19. Further, an adhesive 32 for bonding the heat insulating member 15 and the left wall 25 is provided between the heat insulating member 15 and the outer surface of the inner box 14, in this case, the left wall 25. As the adhesives 31 and 32, a liquid adhesive, a double-sided tape, or the like is used.

  As described above, the walls 16 to 20 of the outer box 13, the walls 22 to 26 of the inner box 14 provided to face the outer box 13, the walls 16 to 20 of the outer box 13, and the wall 22 of the inner box 14. To the heat insulating member 15 provided between the inner box 14 and the inner box 14 corresponding to the outer box 13. The heat insulating member 15 provided between these walls is integrated. This integrated unit is referred to as a divided heat insulation panel 35.

  Specifically, as shown in FIG. 6, the divided heat insulation panel 35 includes an upper surface divided heat insulation panel 351 constituting the upper surface wall of the heat insulation box 12, a floor surface divided heat insulation panel 352 constituting the floor surface wall, and a right surface wall. There are five sheets, that is, a right divided thermal insulation panel 353 constituting the left side divided thermal panel 354 constituting the left side wall and a rear divided thermal insulation panel 355 constituting the rear side wall. And these heat insulation panels 35 are combined in box shape, and the heat insulation box 12 is comprised. Hereinafter, when the content common to a division | segmentation heat insulation panel is shown, it demonstrates using "the division | segmentation heat insulation panel 35".

  As shown in FIGS. 1, 3, and 4, the divided heat insulation panel 35 is connected to another adjacent heat insulation panel 35 via a fixture 36. In other words, the inner box 14 is formed of walls 22 to 26 divided into a plurality of parts, and in the corner portion formed by one wall and another wall adjacent to the wall, these two walls are It is the structure connected via the fixture 36. Specifically, the fixture 36 includes a corner portion formed by the upper wall 22 and the right wall 24 in the inner box 14, a corner portion formed by the upper wall 22 and the left wall 25, the upper wall 22 and the rear wall. 26, a corner portion formed by the bottom wall 23 and the right wall 24, a corner portion formed by the bottom wall 23 and the left wall 25, and a bottom wall 23 and the back wall 26. At the corner.

Specifically, the fixture 36 has a columnar shape with a right-angled triangular section as a whole, and forms a cylindrical interior with a fixing cover 37 and a reinforcing member 38 that form a cylindrical shape with a right-angled triangular section as shown in FIG. And a heat insulating member 39 for corners.
The fixed cover 37 is a member that has a rectangular plate shape made of resin and covers the front side of the reinforcing member 38 of the fixture 36. Specifically, the fixing cover 37 forms a portion corresponding to the hypotenuse of the isosceles cross section of the fixing device 36 when the fixing device 36 is viewed from above, and is located on the front side of the fixing device 36. ing. A plurality of through holes 40 for fixing the fixing tool 36 are formed on both end sides in the width direction orthogonal to the longitudinal direction of the fixing cover 37, that is, on the end side close to the wall forming the inner box 14.

  The reinforcing member 38 is disposed between the fixed cover 37 and the corner portion of the inner box 14 and suppresses deformation of the fixed cover 37. Specifically, the reinforcing member 38 is a member that forms a portion corresponding to the remaining two sides of the isosceles cross section of the fixture 36 and is an L-shaped member. The length of the reinforcing member 38 in the longitudinal direction orthogonal to the L-shaped cross section is adjusted to be the same as the length of the fixed cover 37 in the longitudinal direction. A plurality of screw holes and a plurality of through holes (not shown) are formed at a plurality of locations on both ends of the L-shaped cross section of the reinforcing member 38.

  The corner heat insulating member 39 is formed by forming a heat insulating member such as polystyrene foam into a triangular prism. The corner heat insulating member 39 is formed by aligning the end of the fixed cover 37 and the end of the reinforcing member 38 and passing the screw 41 through the through hole 40 of the fixed cover 37 and screwing it into the screw hole of the reinforcing member 38. It is fixed between the fixed cover 37 and the reinforcing member 38.

  The fixing member 36 is disposed at the adjacent end portions of the two split heat insulating panels 35 in which the right-angled bent portion having the L-shaped cross section of the reinforcing member 38 forms the corner portion of the inner box 14, and the screw 41 is fixed to the fixing cover. 37 and through the through hole (not shown) of the reinforcing member 38 and screwed into a predetermined position of the divided heat insulating panel 35, that is, the walls 22 to 26 of the inner box 14, so that the fixture 36 is in a corner portion of the inner box 14. It is the structure provided corresponding to. Thereby, as above-mentioned, it becomes the structure by which the division | segmentation heat insulation panel 35 was connected with the fixing tool 36. FIG. Further, two adjacent heat insulation panels 35 are arranged to face the two sides of the reinforcing member 38 of the fixture 36. Therefore, the angle of the corner portion formed by the two divided heat insulation panels 35 is 90 ° corresponding to the shape of the reinforcing member 38.

A sealing member 45 made of a soft tape or the like is provided between the reinforcing member 38 and the wall of the inner box 14 adjacent to the reinforcing member 38. As a result, the reinforcing member 38 of the fixture 36 and the wall of the inner box 14 adjacent to the fixture 36 are sealed.
Further, as shown in FIG. 5, a seal member 46 made of, for example, urethane or soft tape is provided at the end of the divided heat insulation panel 35, that is, the corner of the heat insulation box 12. The corner seal member 46 seals the gap between the ends of the adjacent divided heat insulation panels 35.

  As shown in FIGS. 1 and 3, a plurality of storage chambers are formed in the inner box 14 of the heat insulating box 12 by two partition members 50 and 51 that are flat and have a heat insulating effect. The partition member 51 is provided below the partition member 50. As the storage room, a refrigeration room 52, a vegetable room 53, an ice making room 54, and a first freezing room 55 are formed in this order from the top, and a second freezing room 56 is formed on the right side of the ice making room 54. Yes. Specifically, the refrigerator compartment 52 is formed by being surrounded by the inner box 14 and the partition member 50. The vegetable compartment 53 is formed by being surrounded by the inner box 14 and the two partition members 50 and 51. Further, the ice making chamber 54, the first freezing chamber 55, and the second freezing chamber 56 are provided in a space formed by being surrounded by the inner box 14 and the partition member 51.

  The rear end portion of the partition member 50 is located in front of the rear wall 26 of the inner box 14 and forward of the fixture 36 located in the right back corner portion and the left back corner portion of the refrigerator compartment 52. Is located. Further, the rear end portion of the partition member 51 is in contact with the back wall 26 of the inner box 14, and is in contact with and fixed to a fixture 36 located at the right back corner portion and the left back corner portion. As a result, the refrigerator compartment 52 and the vegetable compartment 53 communicate with each other, the vegetable compartment 53 and the ice making chamber 54 are insulated from each other, and the vegetable compartment 53 and the second freezer compartment 56 are also insulated. ing.

  Here, as shown in FIGS. 1 and 3, the interior of the refrigerator compartment 52 is placed on the front surface of the fixing cover 37 of the fixture 36 located at the corner portion on the back side of the refrigerator compartment 52, for example, the corner portion on the left back side. An illuminating device 71 is provided as illuminating means for illuminating. A similar lighting device is also provided in a fixing cover of a fixing tool provided at a corner portion on the right back side (not shown). Specifically, the lighting device 71 includes a corner portion formed by the right wall 24 and the back wall 26, and a left wall 25 and the back wall among the corner portions formed by two adjacent walls in the inner box 14. 26 and provided at a portion corresponding to the refrigerator compartment 52. Since the two illumination devices 71 provided in the two corner portions have the same configuration, the illumination provided in the corner portion on the left back side formed by the left wall 25 and the back wall 26 will be described below. The device 71 will be described.

  As shown in FIG. 7, the illumination device 71 includes a light guide plate 72 and a light irradiation device 73 that is a light irradiation unit. The light guide plate 72 is a transparent plate, for example, an acrylic plate, has a vertically long shape, and is disposed so as to be vertically long along the direction in which the corner portion extends. The light irradiation device 73 is provided at at least one end of the light guide plate 72, for example, at both ends in the longitudinal direction of the light guide plate 72, that is, at both ends in the vertical direction of the refrigerator compartment 52, as shown in FIGS. Yes. The light irradiation device 73 irradiates light into the light guide plate 72, and includes a substrate 74 and a light emitting diode (LED) 75 serving as a light source, as shown in FIG. The substrate 74 has a circuit (not shown) for turning on or off the light emitting diode 75. For example, when a control device (not shown) determines that the refrigerating chamber door 57 of the refrigerating chamber 52 is opened, the substrate 74 receives a signal from the control device and turns on the light emitting diode 75. The light emitting diode 75 is provided in the vicinity of the side surface of the light guide plate 72 in the plate thickness direction, and the light of the light emitting diode 75 enters the light guide plate 72 from the side surface of the light guide plate 72 in the plate thickness direction. In addition, a plurality of light guide plates 72 are provided in the width direction orthogonal to the longitudinal direction of the light guide plate 72, as indicated by the phantom lines in FIG.

  As shown in FIGS. 7 and 8, the light guide plate 72 has a plurality of reflecting portions 76 on the back surface opposite to the front surface facing the refrigerating chamber 52 that is a storage chamber among the surfaces in the plate thickness direction. . The reflection unit 76 reflects light and has a round pattern printed on the light guide plate 72 with white ink. The reflection part 76 is provided densely as it is far from the end part in the longitudinal direction of the light guide plate 72, that is, the light irradiation device 73. Specifically, the reflecting portions 76 are arranged in a staggered manner, and the circular shape becomes larger as the reflecting portions 76 are located in the center of the light guide plate 72 in the longitudinal direction. That is, the area of the reflection portion 76 occupying the surface area of the back surface of the light guide plate 72 is larger in the center than the end portion in the longitudinal direction of the light guide plate 72.

As shown in FIG. 7, a reflection sheet 77 is provided on the back side of the light guide plate 72. The reflection sheet 77 reflects light leaking from the back side of the light guide plate 72 toward the light guide plate 72. Specifically, the reflection sheet 77 is made of aluminum and is adjusted to the same size as the light guide plate 72.
A diffusion sheet 78 for diffusing light is provided on the front surface of the light guide plate 72. The diffusion sheet 78 is made of a white and translucent resin film.
A diffusion preventing cover 79 is provided around the light emitting diode 75 and at a place other than the light guide plate 72. The anti-diffusion cover 79 is formed by bending an aluminum plate member, and directs light in a direction excluding the light guide plate 72 side to the light guide plate 72 side from the light emitted from the light emitting diode 75. It is a reflection.

According to the above-described embodiment, the following operations and effects are achieved.
The light emitted from the light emitting diode 75 of the light irradiation device 73 enters the light guide plate 72 from the longitudinal end portion of the light guide plate 72. Of the light that enters the light guide plate 72, the light that strikes the reflecting portion 76 or the reflecting sheet 77 is reflected to the diffusion sheet 78 side. In particular, since the light hitting the reflecting portion 76 is directly provided on the back surface of the light guide plate 72, it is easily reflected to the diffusion sheet side. Thereby, the inside of the refrigerator compartment 52 is illuminated by the light passing through the diffusion sheet 78. That is, the inside of the refrigerator compartment 52 is illuminated by the illumination device 71 provided at the corner portion in the inner box 14.

  According to the said structure, since the illuminating device 71 is provided in the corner part formed by two adjacent walls in the inner box 14, the illuminating device 71 does not protrude as much as possible inside the storage room, for example, the refrigerator compartment 52. It becomes. Thereby, it can prevent as much as possible that the foodstuff stored in the inside of the refrigerator compartment 52 hits the illuminating device 71. FIG. Furthermore, since the lighting device 71 is provided inside the inner box 14, it is not necessary to dent the inner box 14 toward the outer box 13 in order to provide the lighting device 71. Thereby, the thickness of the heat insulation member 15 provided between the outer box 13 and the inner box 14 can fully be ensured, and a favorable heat insulation effect can be obtained.

Since the light irradiation device 73 is provided at the end of the light guide plate 72, the light guide plate 72 is illuminated by the light irradiation device 73 from the end side toward the center side. Therefore, the entire light guide plate 72 is likely to be bright, and a wide area inside the inner box 14, that is, inside the refrigerator compartment 52 can be illuminated.
In the light guide plate 72, the reflection portions 76 are densely provided farther from the light irradiation device 73, so that even if the intensity of light passing through the light guide plate 72 at the center of the light guide plate 72 is weakened, the reflection portion 76 The amount of light reflected toward the diffusion sheet 78 increases. That is, the light irradiated from the light irradiation device 73 is reflected more toward the diffusion sheet 78 side by the reflection unit 76 as the distance from the light irradiation device 73 increases. Thereby, even if the light guide plate 72 has a vertically long shape, the entire light guide plate 72 can be brightened with substantially uniform strength.

  The inner box 14 is composed of a plurality of divided walls 22 to 26, and the two walls 22 to 26 are fixed via a fixture 36 at a corner formed by two adjacent walls 22 to 26. Therefore, the refrigerator 11 can be easily assembled rather than assembling the refrigerator using the three-dimensional inner box.

Since the lighting device 71 is provided on the fixture 36, when the inner box 14 is assembled with the walls 22 to 26 and the fixture 36, the lighting device 71 can be easily provided at a corner portion inside the inner box 14. it can.
Since the heat insulating member 15 is composed of a vacuum heat insulating panel, one surface of the heat insulating member 15 is bonded to the outer surface of the inner box 14 and the other surface is bonded to the inner surface of the outer box 13, so that the wall of the heat insulating box 15 is made as thin as possible. can do. In this case, the bundled wires and pipes can be accommodated by housing the bundled wires such as electric wires and the pipes such as the suction pipes that are conventionally provided between the outer box and the inner box inside the fixture 36. Space can be secured.

By using the light emitting diode 75 as the light irradiation device 73, the light irradiation device 73 can be made thinner than when using an incandescent lamp. Thereby, the illumination device 71 as a whole can be made thin, and a storage space inside the storage chamber 52 can be sufficiently secured.
Since the light guide plate 72 is provided along the corner portion of the inner box 14, the illumination device 71 can illuminate a wide range of the refrigerator compartment 52.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the thing of the same structure as 1st Embodiment, and description of the structure is abbreviate | omitted.
In the second embodiment, an illuminating device 81 that is an illuminating unit is provided instead of the illuminating device 71 of the first embodiment. The illumination device 81 includes a light irradiation device 82 and a light guide plate 83. The light irradiation device 82 includes a substrate 84 and a light emitting diode 85, and is provided inside the fixture 36. And the light irradiated from the light irradiation apparatus 82 is the structure which passes the light guide plate 83 substantially parallel to a plate | board thickness direction.

  Specifically, in the second embodiment, a rectangular opening 86 extending in the longitudinal direction is formed in the fixed cover 37 of the fixing tool 36. Further, the corner heat insulating member 39 is formed with a recess 87 at a portion corresponding to the opening 86 of the fixed cover 37. The recess 87 has a peripheral wall surface that is continuous with the edge of the opening 86 and has a flat bottom at the bottom. A substrate 84 of the light irradiation device 82 is provided at the bottom of the recess 87. The substrate 84 is the same as the substrate 74 of the first embodiment. In this embodiment, the substrate 84 has a rectangular plate shape that is long in the direction in which the corner portion extends. A plurality of light emitting diodes 85 are provided on the substrate 84 along the longitudinal direction of the substrate 84. FIG. 9 shows only one light emitting diode. The light emitting diode 85 is the same as the light emitting diode 75 of the first embodiment. Furthermore, in this embodiment, the light guide plate 83 is provided so as to cover the front of the light emitting diode 85 and to close the opening 86 of the fixed cover 37. In this embodiment, the light guide plate 83 is not provided with a reflection portion and a reflection sheet, but a diffusion sheet 88 is provided on the front surface of the light guide plate 83.

  According to the above configuration, the light emitted from the light emitting diode 85 of the light irradiation device 82 reaches the storage room, for example, the refrigerator room 52 through the shortest path passing through the thickness direction of the light guide plate 83. Therefore, the loss of light from the light irradiation device 82 can be reduced, and the inside of the refrigerator compartment 52 can be illuminated more brightly.

(Third embodiment)
Next, a third embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the thing of the same structure as 1st Embodiment, and description of the structure is abbreviate | omitted.
In the third embodiment, the lighting device 71 of the first embodiment is provided in the corner portion formed by two adjacent walls in the inner box 14 without using the fixture 36 of the first embodiment. It is the composition which is. In this case, the light guide plate 72 is disposed such that the diffusion sheet 78 is on the front side of the reflection sheet 77.

In addition, the two adjacent heat insulation panels 35 in this embodiment are configured to be fixed to screws (not shown), and the lighting device 71 is also configured to be fixed inside the inner box 14 by screws (not shown). Become.
Also with the above configuration, the interior of the refrigerator compartment 52 can be illuminated by the illumination device 71.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG. 11 and FIG. In addition, the same code | symbol is attached | subjected about the thing of the same structure as 3rd Embodiment, and description of the structure is abbreviate | omitted.
In 4th Embodiment, the illuminating device 91 is provided instead of the illuminating device 71 shown in 3rd Embodiment. In the lighting device 91, the light guide plate 92 is different in shape from the light guide plate 72 of the lighting device 71. That is, the light guide plate 92 of the lighting device 91 has a corner portion 93 and a flat portion 94. The corner portion 93 has a configuration corresponding to the corner portion of the inner box 14, for example, a convex shape in which a cross section perpendicular to the longitudinal direction of the light guide plate 92 protrudes to the corner side of the corner portion of the inner box 14, in this case, a curved shape. Yes. The flat portion 94 has a flat plate shape and extends from the end of the corner portion 93 to the corner portion 93 and extends linearly outward. That is, the light guide plate 92 has a shape that is, for example, approximately one quarter of the circumference when viewed from above, and has both ends that extend straight in a tangential direction passing through the end. Although not shown, the light guide plate 92 has a reflective portion on the back surface, as in the first embodiment. Further, a reflection sheet 77 is provided outside the reflection portion of the light guide plate 92, and a diffusion sheet 78 is provided on the front surface of the light guide plate 92.

  Moreover, the light irradiation apparatus 95 of 4th Embodiment is provided in the both ends of the longitudinal direction in the flat part 94. FIG. The light irradiation device 95 includes a substrate 96 and a light emitting diode 97. Further, a diffusion preventing cover 98 is provided so as to cover the light emitting diode 95. The substrate 96, the light emitting diode 97, and the diffusion preventing cover 98 have the same configuration as the substrate 74, the light emitting diode 75, and the diffusion preventing cover 79 of the first embodiment, but match the size of the flat portion 94. The dimensions of these parts are changed as appropriate.

According to the above configuration, the corner portion 93 of the light guide plate 92 corresponds to the corner portion on the back side of the refrigerator compartment 52 that is the storage chamber of the inner box 14, so that the light guide plate 92 is closer to the corner portion of the refrigerator compartment 52. Thus, a large storage space for the refrigerator compartment 52 can be secured.
Since the corner portion 93 of the light guide plate 92 is curved, there are fewer sharp corners in the interior of the storage chamber, the design is improved, and the number of bent corners is reduced, so that cleaning is easy. Become.
Since the light irradiation device 95 is provided at the end of the flat portion 94, the light irradiation device 95 can be assembled with a simpler configuration than the light irradiation device 95 is provided at the corner portion 93. For example, the diffusion preventing cover 98 can be obtained by simply bending a rectangular aluminum plate.

  Here, “corresponding to the corner” refers to a configuration in which at least a part of the light guide plate 92 protrudes toward the corner of the corner of the inner box 14. Therefore, the corner portion 93 of the light guide plate 92 may have an L-shaped cross section, and the bent portion may be arranged in accordance with the corner portion of the inner box 14. This configuration also corresponds to “corner portion”. Configuration ".

(Other embodiments)
The installation locations of the illumination devices 71, 81, 91 described above are merely examples. For example, as shown in FIG. 13, the lighting device 71 may be provided at a corner portion formed by the upper surface wall 22 and the left wall 25 of the inner box 14 and a stepped corner portion of the upper surface wall 22. Although not shown, the lighting device 71 may be provided at a corner portion formed by the upper surface wall 22 and the right surface wall 24 of the inner box 14.
Although the light irradiation devices 73, 82, and 95 are described as the light emitting diodes 75, 85, and 97, incandescent lamps, organic EL, and the like may be used instead of the light emitting diodes.
As a configuration in which the reflection portions 76 are densely provided on the surface of the light guide plate 72, the reflection portions 76 having the same size per one are provided so that the vicinity of the central portion of the light guide plate 72 is distributed more than the end side. May be.

Although the heat insulating member 15 provided between the outer box 13 and the inner box 14 has been described using a vacuum heat insulating panel, only a heat insulating member made of urethane foam or a heat insulating member combining urethane foam and a vacuum heat insulating panel is used. May be.
When a space is formed inside the corner heat insulating member 39 of the fixture 36 and a pipe such as a suction pipe (not shown) passes therethrough, the portion where the fixed cover 37 and the reinforcing member 38 are in contact is made of soft tape or the like. A seal member may be provided. Thereby, it becomes the structure by which the space | interval between the fixing cover 37 and the reinforcement member 38 was sealed more, and it can suppress that dew condensation generate | occur | produces on the surface of the piping provided in the inside of the fixing tool 36. FIG.

Instead of the reflecting portion 76 of the first embodiment, a plurality of dents for diffusing light may be formed on the back surface of the translucent plate 72, and these dents may be used as the reflecting portion.
The light irradiation devices 73 and 95 may be provided at the end portions in the width direction of the light guide plates 72, 83, and 92.
In the configuration of the third embodiment, the lighting device 81 of the second embodiment may be used instead of the lighting device 71 of the first embodiment.

  As mentioned above, according to the refrigerator of this embodiment, since the illumination means is provided in the corner part formed by two adjacent walls in the inner box, the illumination means does not protrude as much as possible inside the storage chamber. It becomes composition. Thereby, it can prevent as much as possible that the foodstuff accommodated in a storage chamber hits an illumination means. Furthermore, since the illumination means is provided inside the inner box, there is no need to dent the inner box toward the outer box in order to provide the illumination means. Thereby, the thickness of the heat insulating member provided between the outer box and the inner box can be sufficiently secured, and a good heat insulating effect can be obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 11 is a refrigerator, 12 is a heat insulating box, 13 is an outer box, 14 is an inner box, 15 is a heat insulating member, 22 is a top wall (wall), 23 is a bottom wall (wall), and 24 is a right wall (wall). ), 25 is a left wall (wall), 26 is a back wall (wall), 36 is a fixture, 52 is a refrigerator room (storage room), 53 is a vegetable room (storage room), 54 is an ice making room (storage room), 55 is a first freezing room (storage room), 56 is a second freezing room (storage room), 71, 81, 91 are lighting devices (illuminating means), 72, 83, 92 are light guide plates, 73, 82, Reference numeral 95 denotes a light irradiation device (light irradiation means), 76 denotes a reflection portion, 93 denotes a corner portion, and 94 denotes a flat portion.

Claims (8)

A heat insulating member is provided between the outer box and the inner box and is configured in a box shape, and a heat insulating box that forms a storage chamber inside the inner box;
Illuminating means for illuminating the storage chamber,
The said illumination means is provided in the corner part formed by two adjacent walls in the said inner box, The refrigerator characterized by the above-mentioned.   The refrigerator according to claim 1, wherein the illumination unit includes a light guide plate and a light irradiation unit that is provided at an end of the light guide plate and irradiates light into the light guide plate.   The refrigerator according to claim 2, wherein the light guide plate has a corner portion, and the corner portion of the light guide plate corresponds to the corner portion of the inner box. The light guide plate has a flat portion extending linearly outward from the end of the corner portion,
The refrigerator according to claim 3, wherein the light irradiation means is provided at an end of the flat portion. The light guide plate has a plurality of reflecting portions that reflect light on the back surface opposite to the front surface facing the storage room,
The refrigerator according to any one of claims 2 to 4, wherein the reflection portion is densely provided as the distance from the light irradiation unit increases. The inner box is divided into a plurality of walls,
The refrigerator according to any one of claims 1 to 5, wherein the plurality of walls are connected to each other at a corner portion of the inner box via a fixture.   The refrigerator according to claim 6, wherein the illumination unit is provided on the fixture. The heat insulating member is a vacuum heat insulating panel;
8. The vacuum heat insulation panel according to claim 1, wherein one surface of the vacuum heat insulation panel is bonded to the inner box, and the other surface opposite to the one surface is bonded to the outer box. Refrigerator.

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