JP2006098042A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maximize an inner volume and a depth of a lowermost drawer storage chamber, to reduce projection at an inside uppermost depth portion for mounting a compressor, and to improve lighting effect inside. <P>SOLUTION: This refrigerator main body has a first top panel portion 25 and a second top panel portion 26 to form a step portion 26a on a top panel portion of a refrigerator, the compressor 16 is mounted on the second top panel portion, and a lighting system 41 is mounted near an inside projecting portion 40 formed inside of the refrigerator in a state faced to the step portion 26a. Thus the lighting system can be mounted without bulging out so much inside the refrigerator, storability can be improved, lighting effect inside can be also improved, articles stored inside are easily viewable, and the inside of refrigerator can be kept neat. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator in which a compressor is loaded on the top surface.

  In recent years, refrigerators are required to be further energy-saving from the viewpoint of protecting the global environment, and to be improved in usability and storage.

  Conventional refrigerators of this type are provided with a recess that is recessed so that the rear back of the uppermost storage chamber of the heat insulation box is lowered for the purpose of increasing the storage capacity of the storage chamber disposed at the bottom. A method of storing the components of the refrigeration cycle in the recess has been taken (see, for example, Patent Document 1).

  FIG. 10 shows a configuration of a conventional refrigerator described in Patent Document 1. As shown in FIG.

  As shown in FIG. 10, the heat insulating box 1 has a refrigerator compartment 2, a freezer compartment 3, and a vegetable compartment 4 in order from the top, and a refrigerator compartment rotary door 5 is provided at the front opening of the refrigerator compartment 2. In addition, the freezer compartment 3 and the vegetable compartment 4 located in the lower part from the center of the heat insulation box 1 are a drawer-type freezer compartment drawer door 6 and a vegetable compartment drawer door 7 that can be easily taken out in consideration of storability and usability. Is provided. A plurality of storage shelves 8 are provided inside the refrigerator compartment 2, and a storage container 9 having an open top surface is attached to the freezer compartment 3 and the vegetable compartment 4. The storage container 9 is supported by a roller (not shown) so as to be movable in the front-rear direction by a roller.

  The recessed part 10 provided in the heat insulation box 1 is a place where the top back part over the outer box upper surface 11 and the outer box back surface 12 is depressed so that the uppermost back part of the refrigerator compartment 2 is lowered. The left and right sides of the recess 10 are closed by the left and right walls of the heat insulating box 1 and open upward and to the back. The open portion of the recess 10 includes an upper plate 13 and a back plate 14 that is substantially perpendicular to the upper plate 13. The concave cover 15 is covered. The recess cover 15 is detachably fixed to the heat insulating box 1 with screws or the like.

  The compressor 16 and the condenser 17 that are components of the refrigeration cycle are disposed so as to be accommodated in the recess 10 together with the machine room fan 18, and are covered with the recess cover 15. The upper plate 13 and the back plate 14 of the recess cover 15 are provided with a plurality of ventilation holes 19 for heat dissipation.

  Moreover, the evaporator 20 which is a component of the refrigeration cycle is disposed with a cooling fan 21 at the back of the freezer compartment 2, and the vegetable compartment 4 which is the lowest storage compartment is deeply configured.

Thereby, compared with what accommodates the compressor 16 and the condenser 17 in the back lower part of the heat insulation box 1, the internal volume of the vegetable compartment 4 can be enlarged and comprised deeply.
JP 2001-99552 A

  However, in the above-described conventional configuration, the recessed portion for storing the compressor, the condenser, the refrigerant pipe, and the control board is large, so that the depth of the top surface in the refrigerator compartment is raised, the internal volume is reduced, and the refrigeration compartment is refreshed. Disturbs and gives a narrow impression.

  In addition, refrigerator control boards are becoming more complex and larger with energy saving and higher functionality. In addition, the size of control boards such as capacitors and heat radiation fins for control circuits of inverter compressors used for energy saving and noise reduction, as well as power transformers, is increasing. A very large space is required. For this reason, the recessed portion requires a larger space, and the interior becomes increasingly narrow.

  For this reason, the protrusion into the refrigerator compartment becomes large, and when the food in the back is taken out, this protrusion becomes a shadow and is difficult to see.

  The present invention solves the above-described conventional problems, and after expanding the inner volume of the lowermost storage chamber, the internal convex portion that is the protrusion into the uppermost storage chamber of the refrigerator is reduced to reduce the internal volume. It aims at providing the refrigerator which installs interior lighting so that the shadow by the convex part in a warehouse may be eliminated, and improves a lighting effect while aiming at expansion.

  In order to solve the above-described conventional problems, the refrigerator according to the present invention includes a refrigerator main body including a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion on the refrigerator back side. And forming a step portion on the top surface portion of the refrigerator main body, including a compressor on the second top surface portion, and providing an illumination device in the vicinity of the convex portion inside the chamber facing the step portion. It is characterized by that.

  As a result, the inner volume of the lowermost storage chamber is expanded, the convex portion inside the refrigerator that extends into the uppermost storage chamber of the refrigerator is reduced, and the shadow is not easily formed by the convex portion in the refrigerator. By installing the internal lighting, the lighting effect can be improved without sacrificing storage.

  In the refrigerator of the present invention, in addition to expanding the inner volume and depth of the lowermost storage chamber, the inner volume of the lowermost storage chamber is expanded, and then the inside of the refrigerator that is left in the uppermost storage chamber of the refrigerator By reducing the convexity and installing the interior lighting so that it is difficult to shade the interior convexity, the lighting effect can be improved without sacrificing storage, greatly improving the convenience of the refrigerator Can be made.

  The invention according to claim 1 is characterized in that the refrigerator main body has a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion on the refrigerator back side. A step portion is formed on the top surface portion, a compressor is provided on the second top surface portion, and an illuminating device is provided in the vicinity of the in-compart convex portion formed on the inner side facing the step portion.

  As a result, the inner volume of the lowermost storage chamber is expanded, the convex portion inside the refrigerator that extends into the uppermost storage chamber of the refrigerator is reduced, and the shadow is not easily formed by the convex portion in the refrigerator. By installing the internal lighting, the lighting effect can be improved without detracting from the storage capacity, so the convenience of the refrigerator can be greatly improved.

  The invention according to claim 2 is characterized in that, in the refrigerator according to claim 1, the illuminating device is provided across the front surface and the lower surface of the corner of the convex portion in the cabinet, Usually, the light irradiation direction is only the front surface, but the light irradiation direction is increased downward, so that the illumination effect can be obtained efficiently with a small number of light sources.

  Furthermore, by using a lens cut shape on the surface of the illumination cover, light is diffused and a wider range can be irradiated. Moreover, since it is a corner | angular part, the space of an illumination part can be utilized more efficiently than a plane part, and the protrusion to a warehouse can be made small.

  The invention according to claim 3 is characterized in that, in the refrigerator according to claim 1 or 2, the lighting device provided on the convex portion in the cabinet is provided at a plurality of locations apart from each other as viewed from the front. To do. Thereby, an illumination part can be made to protrude in the invalid space of the piping part of the compressor arrange | positioned on the back surface, and the protrusion inside a store | warehouse | chamber can be reduced significantly. In addition, the suction and protruding piping parts of the compressor on the back side can be arranged in the left and right direction when viewed from the front, and the pipe welding part can be configured with a straight part on the back side with good workability, and the piping of the heat insulating box can be fixed. Can be connected to each other at a distance, and piping vibration can also be reduced.

  Moreover, the invention according to claim 4 is the refrigerator according to any one of claims 1 to 3, wherein the lighting device provided on the convex portion in the warehouse is at least in the left-right direction from the center when viewed from the front. It is characterized by being provided over a width of more than half the width. As a result, even a light source with a small space and a small amount of light can obtain a certain length, so that it is possible to provide a lighting device having a necessary and sufficient amount of light without detracting from the amount of storage in the cabinet.

  Further, the invention according to claim 5 is the refrigerator according to claim 1, wherein a plurality of the lighting devices are provided, and the lighting devices are arranged on both the upper and lower sides of the lower end surface of the internal convex portion. Features. By this, illumination is arranged on both the upper and lower sides with respect to the lower end surface of the inner convex part, so that light reaches the front and the lower part of the inner convex part, and the shadow of the inner convex part cannot be shaded. In addition to brightly illuminating the stored items, it is also possible to reduce the protruding feeling of the convex portion inside the cabinet that the user feels visually.

  In addition, by arranging lighting on both the upper and lower sides of the convex part in the warehouse, the area around the convex part in the warehouse is illuminated brightest, and the storage space around the convex part in the warehouse where the storage space becomes smaller is felt wider than the actual space. As a result, it is possible to further reduce the protruding feeling of the convex portion in the cabinet that is visually felt by the user.

  Moreover, the invention according to claim 6 is the refrigerator according to claim 5, wherein the lighting device is provided in a region including a corner portion of the inner convex portion and a corner portion adjacent to the lower portion of the inner convex portion. It is provided. As a result, the illumination is arranged at the corners on both the upper and lower sides of the convex portion in the warehouse, so that light reaches the front and the lower side of the convex portion in the warehouse, and the shade of the convex portion in the warehouse cannot be shaded. Can be brightly illuminated, and the protruding feeling of the convex part in the cabinet that the user can visually perceive can also be reduced.

  The invention according to claim 7 is the refrigerator according to claim 5, wherein the lighting device is provided on the inner side of the first top surface portion and on the back wall surface below the convex portion in the chamber. And Thus, by arranging the lighting on the ceiling surface, the top heat insulating wall of the refrigerator is shaded, and the uppermost stage where indoor lighting such as a kitchen is difficult to reach can be illuminated brightly over almost the entire surface. Further, the two illumination devices are arranged such that the lamps themselves do not form shadows with the other lamp, and the light projection directions are different, so that efficient illumination is possible.

  The invention according to claim 8 is the refrigerator according to claim 5, wherein the lighting device is provided on the back wall surface on the front surface side of the convex portion in the cabinet and on the back wall surface below the convex portion in the cabinet. Features. As a result, the illumination is arranged on both the upper and lower sides of the internal convex portion 113, so that the light reaches the front and the lower side of the internal convex portion, and the shadow of the internal convex portion cannot be shaded. The protruding feeling of the convex part in the cabinet can be reduced.

  In addition, if human vision is the same space, there is a visual effect that the brighter the space is, the wider the visual effect, so by arranging the lighting in this way, the top shelf among the shelves in the warehouse is illuminated Since the uppermost storage shelf that is illuminated most brightly and has the smallest depth and the smallest storage space can be felt wider than the actual space, it is possible to further reduce the protruding feeling of the convex portion in the cabinet that the user visually feels.

  In addition, since the two lighting devices used on the back are arranged in the depth direction, the lamp itself does not become a shadow of other lamps, and the projection direction of the light is different, enabling efficient illumination. It is.

  The invention according to claim 9 is the refrigerator according to any one of claims 1 to 8, wherein the light source of the lighting device is provided with a light emitting element such as a fluorescent tube or an LED. It is possible to provide an illuminating device that secures sufficient brightness while further reducing the power consumption.

  The invention according to claim 10 is the refrigerator according to claim 1, wherein the refrigerator main body is provided at a position lower than the second top surface portion on the refrigerator back side from the second top surface portion. A part of the control board and the refrigerant pipe in the space above the third top surface portion, and forming the second convex portion inside the warehouse facing the third top surface, An illumination device is provided on the second convex portion in the cabinet. As a result, it is possible to irradiate light especially to the shadowed part that occurs when the control board is placed on the back side, and it is easy to store. Can be provided.

  In addition, there is a substrate portion immediately on the back, and the length of the cord can be minimized in the assembly process. In addition, since the back of the lighting unit is relatively hot, no condensation occurs even if the wall thickness is reduced, so that the internal volume can be increased and the amount of protrusion into the chamber can be reduced. Unevenness can be minimized and a refreshing feeling can be improved.

  The invention according to claim 11 is the refrigerator according to claim 1, wherein the refrigerator main body has a control base disposed on a back wall surface other than the projection surface in the horizontal direction of the lighting device. As a result, the thickness of the heat insulation wall is secured and the level difference in the back direction of the interior is reduced, an efficient configuration with less unevenness is possible, the appearance can be improved, and the refreshing feeling in the interior is improved. Can do.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view of the refrigerator in the first embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  In FIG. 1, the heat insulation box 1 comprised by heat insulation, such as hard foam urethane, is divided into the some heat insulation division, for example, the refrigerator compartment 2, the drawer type vegetable room 4 from the top, The freezer compartment 3 is configured. Each heat insulation section is provided with a heat insulation door via a gasket 22. The refrigerator door 5, the vegetable compartment drawer door 7, and the freezer compartment drawer door 6 from above.

  The refrigerating compartment rotary door 5 is provided with a door pocket 23 as a storage space, and a plurality of storage shelves 8 are provided in the warehouse. A storage case 24 that can be pulled out is provided at the bottom of the refrigerator compartment 2.

  The refrigerator compartment 2 is normally set at 1 to 5 ° C. with the lower limit of the temperature at which it is not frozen for refrigerated storage. Further, the storage case 24 is set at a relatively low temperature, for example, −3 to 1 ° C. for improving the freshness of meat fish and the like. The vegetable room 4 is often set to a temperature setting of 2 ° C. to 7 ° C., which is the same as or slightly higher than that of the refrigerator room 2. It is possible to maintain the freshness of leafy vegetables for a longer period as the temperature drops.

  The freezer compartment 3 is normally set at −22 to −18 ° C. for frozen storage, but may be set at a low temperature of −30 or −25 ° C., for example, to improve the frozen storage state.

  The top part of the heat insulation box 1 is provided with a dent in a stepped manner toward the back side, and is composed of a first top surface part 25, a second top surface part 26, and a third top surface part 27, A step 26 a is formed by the surface connecting the top surface portion 25 and the second top surface portion 26 in the front-rear direction and the second top surface portion 26, and the second top surface portion 26 and the third top surface portion 27. A second stepped portion 27 a is formed by the surface connecting the two in the front-rear direction and the third top surface portion 27.

  The refrigeration cycle is configured by connecting a compressor 16, a condenser 17, a decompressor 28 such as a capillary, a dryer (not shown) for removing moisture, and an evaporator 20 in an annular shape. The condenser 17 and the evaporator 20 are subjected to forced convection heat exchange between the machine room fan 18 and the cooling fan 21.

  Further, in addition to the forced convection type, the condenser 17 is provided in a pipe for naturally radiating heat using a steel plate surrounding the heat insulation box 1 and a partition between the heat insulation doors in each room to prevent drip-proof. You may combine the piping for performing.

  The compressor 16 which is a component of the refrigeration cycle is installed at a position closer to the center toward the back of the heat insulating box 1.

  The condenser 17 has a thin configuration such as a wire type, a fin coil type, or a spiral fin type, and is disposed in the space above the first top surface portion 25.

  An illuminating device 41 is disposed on the opposing convex portion 40 of the second top surface portion 26, and includes a lamp cover 42, a light bulb 43, and a socket 44. At this time, the lamp cover 42 is made of a light-transmitting material, straddles the front surface and the bottom surface of the convex portion 40 inside the refrigerator, and has a substantially L-shaped cross section. Is configured. The lamp cover 42 is provided with a slit hole 45 on the front surface and a notch 46 on the lower surface.

  The control board 32 for operating the refrigeration cycle is hermetically disposed with a removable cover in the board storage part 33 provided in the upper space part of the third top surface part 27. The control board 32 has a thin plate shape because electronic components are mounted on the printed board. Further, a top cover 34 is provided above the first, second, and third top surface portions 25, 26, and 27 so as to be removable with a screw or the like, and the rear surface is gathered upward from the third top surface portion 27. A single back cover 35 is detachably provided.

  Moreover, the evaporator 20 which is a component apparatus of a refrigerating cycle is provided in the back part of the vegetable compartment 4 located in a middle stage with the cooling fan 21. FIG. Thereby, it is possible to maximize the internal volume and depth of the freezer compartment 3 which is the lowermost storage room.

  If the middle vegetable room 4 and the lowermost freezer room 3 have the opposite configuration, it is possible to maximize the internal volume and depth of the vegetable room.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described. The refrigeration cycle is operated by a signal from the control board 32 in accordance with the set temperature in the refrigerator, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 16 dissipates heat in the condenser 17 to be condensed and liquefied, and reaches the capillary 28. Thereafter, the capillary 28 is depressurized while exchanging heat with the suction line 36, becomes a low-temperature and low-pressure liquid refrigerant, and reaches the evaporator 20.

  By the operation of the cooling fan 21, heat is exchanged with the air in the cabinet, and the refrigerant in the evaporator 20 is evaporated. Each room is cooled by distributing low-temperature cold air with a damper (not shown). The refrigerant exiting the evaporator 20 is sucked into the compressor 16 through the suction line 36.

  By disposing the compressor 16 and the condenser 17 that are repeatedly operated in this manner on the top surface of the heat insulation box 1, the heat insulation performance is not lowered due to heat accumulation, which is advantageous for energy saving.

  Further, by reducing the protrusion to the interior, the reduction in the internal volume due to the ineffective portion can be reduced, and by making the interior of the interior in a staircase shape minimal, the step can be made small and inconspicuous.

  And since the lighting device 41 is in the interior convex part 40, since the light bulb as a light source can be located at the uppermost part near the center in the depth direction in the interior, the light easily reaches the entire interior. Since the transparent lamp cover 42 spans the front and lower surfaces, light is irradiated downward, so that the light can reach the lower and rear surfaces, which can easily be shaded and darkened. Can be high. Further, it can be removed by hooking a finger on the notch 46 at the time of service such as lamp breakage. Because it is relatively near, it is easy to reach and work. Further, as a consideration when the door is opened for a long time in the lighting device 41, the lamp cover 42 is notched so that the space for taking a distance and the heat do not accumulate in order not to deform the lamp cover 42 with the heat of the light source. The portion 46 and the slit hole 45 allow heat to escape. In addition, a considerable space is required together with the heat insulating layer that insulates the inside and the outside of the cabinet, and the illumination unit normally protrudes from the wall surface, but in this configuration, the compressor 16 having a relatively high temperature immediately on the back side. The heat insulation layer can be made into a thin wall by the heat. Therefore, the illuminating device 41 can be disposed with almost no protrusion from the internal convex portion 40, and does not impair the storage capacity in the internal storage.

  Further, the control board 32 is provided on the back side of the lighting device 41, and the length of the cord 47 can be shortened to the minimum in the assembling process, so that an inexpensive configuration is possible. Of course, since the compressor is not at the bottom of the heat insulating box, the inner volume and depth of the lower storage chamber can be increased.

  Furthermore, by using a lens cut shape on the surface of the lamp cover 42, the light diffuses and a wider range can be irradiated.

  On the other hand, since the condenser 17 is arranged in a separate section from the compressor 16, it can be designed to be thin and have a large surface area without being affected by temperature, so it can be designed with good heat dissipation efficiency and low ventilation resistance. As a result, the capacity of the condenser 17 can be maximized, and the condenser 17 is arranged on the top surface, so that there is no heat accumulation, so the heat load on the heat insulating box 1 is reduced and energy saving is achieved. Is effective.

(Embodiment 2)
FIG. 2 shows a schematic front view of the refrigerator according to Embodiment 2 of the present invention, and FIG. 3 shows a schematic rear view. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  In FIG. 2 and FIG. 3, the internal convex part 40 facing the second top surface part 26 is provided with lighting devices 41 at a plurality of positions apart from the left and right when viewed from the front, and the compressor 16 on the back is in the left-right direction. The pipe section 48 disposed near the center and connected to the compressor 16 is disposed in the left-right direction as viewed from the front. For this reason, an illumination part can be made to protrude in the invalid space of the piping part of the compressor arrange | positioned at the back, and it becomes possible to ensure sufficient wall thickness at the back. The illuminating device 41 can be configured without the lamp cover 42 projecting on the inside of the box and without sacrificing the food storage property in the box. Moreover, since there are a plurality of light bulbs 43, sufficient brightness can be secured in the cabinet. In addition, the pipe welded portion of the compressor 16 on the back side can be configured with a straight portion on the back side with good workability, and the pipe fixing portion of the heat insulating box can be connected with a distance, thereby reducing pipe vibration. You can also.

(Embodiment 3)
FIG. 4 shows a schematic front view of the refrigerator according to Embodiment 3 of the present invention, and FIG. 5 shows a schematic cross-sectional view. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  4 and 5, the lamp cover 48 is provided at the corner of the internal convex portion 40 opposite to the second top surface portion 26 over at least a half of the internal width in the left-right direction from the center when viewed from the front. The cross section is substantially L-shaped. A fluorescent tube or an LED light emitting element 49 that is long in the width direction is attached to the light source. Since the amount of heat generated by the fluorescent tube or the LED light-emitting element 49 is relatively low, the space 51 in the lighting device 50 is not significantly reduced compared to the case of using a light bulb or the like, and the lamp cover 48 does not protrude into the cabinet. . In addition, even if the light source has a relatively small amount of light, it can be secured long in the left-right direction, so that sufficient brightness can be obtained. With this configuration, it is possible to provide an illuminating device that can improve the storage capacity in the refrigerator regardless of the position of the compressor 16 on the back side.

(Embodiment 4)
FIG. 6 shows a schematic cross-sectional view of the refrigerator in the fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  In FIG. 6, in the heat insulation box which provided the 1st top | upper surface part 25, the 2nd top | upper surface part 26, and the 3rd top | upper surface part 27 by providing the dent in step shape toward the back direction, A step 26a is formed by the surface connecting the second top surface portion 26 in the front-rear direction and the second top surface portion 26, and the second top surface portion 26 and the third top surface portion 27 in the front-rear direction. A second stepped portion 27 a is formed by the connecting surface and the third top surface portion 27. It is formed on the inner side opposite to the second stepped portion 27a adjacent to the area below the inner convex portion 40 and the region including the corner of the inner convex portion 40 formed on the inner side facing the stepped portion 26a. Illumination devices 41a and 41b are provided in areas including the corners of the second convex portion 52 in the cabinet. That is, when viewed from the lower end surface of the internal convex portion 40, it faces the storage space on the internal uppermost storage shelf 8a that is the front space of the internal convex portion 40 that is the space above the lower end surface. One lighting device 41a is disposed, and faces another storage space directly below the uppermost storage shelf 8a in the cabinet, which is a lower space adjacent to the convex portion 40 in the cabinet, which is a space below the lower end surface. 41b is arranged.

  The structure of the illumination device 41 is the same as that of the first embodiment. With this configuration, it is possible to irradiate light to a particularly shadowed portion generated by a protrusion in the cabinet, and it is effective for finding a food item that is difficult to find. Furthermore, since each lamp cover 42a, 42b hardly protrudes in the interior, it is possible to provide a clean interior with excellent storage properties.

  In addition, since the lights are arranged on both the upper and lower sides of the lower end surface of the inner convex portion 40, light reaches the front and lower sides of the inner convex portion, and the shadow of the inner convex portion cannot be shaded. It is possible to reduce the bulging feeling of the convex part in the cabinet that is visually felt.

  In addition, by arranging one lighting device 41a in the corner area on the back of the uppermost storage shelf 8a, the top heat insulating wall of the refrigerator compartment 2 is shaded to illuminate the uppermost portion where indoor lighting such as a kitchen is difficult to reach. However, if the human vision is the same space, there is a visual effect that the brighter the space is, the brighter the visual effect is. Therefore, by arranging the lighting in this way, the uppermost storage shelf 8a among the shelves in the warehouse. Is illuminated most brightly, and the uppermost storage shelf 8a having the smallest depth and the smallest storage space is felt wider than the actual space, further reducing the protruding feeling of the convex portion inside the cabinet that the user feels visually. be able to.

  Further, since the two lighting devices 41a and 41b are arranged so as to be shifted in the depth direction, the light projection direction is shifted back and forth, so that the interior of the refrigerator compartment 2 can be efficiently illuminated.

  At the same time, the illuminating device 41a is arranged to be shifted forward from the back surface of the refrigerator compartment 2, so that the storage shelves of the second stage and below are illuminated from the top, not from the back surface, and are frequently used. The storage part below the second stage is easy to see with lighting close to the hand and is extremely effective in terms of usability.

  That is, in the illumination arrangement for the refrigerator compartment 2, the illumination for the substantially rectangular parallelepiped interior region below the lower end surface of the interior convex portion 40 is as if the illumination is from the upper surface in addition to the illumination 41b from the back surface. The so-called top unit type that has a given configuration and can illuminate three-dimensionally in the depth direction in this area, which is frequently used on a daily basis, and arranges a cooling unit including at least a compressor at the top of the refrigerator body Even in the refrigerator, it is possible to realize a bright and effective interior lighting in practical use by reversing one side that tends to be seen as a demerit due to the presence of the convex section 40 in the refrigerator. In addition, it can be improved.

  In the present embodiment, since the lighting device 41a is arranged in the corner area of the convex portion 40 in the cabinet, the light is not blocked by the stored items placed on the uppermost storage shelf 8a, and the second step The user-friendliness by the above-mentioned lighting effect with respect to the following storage parts can always be enjoyed.

  In addition, if the level | step-difference part 26a can form an inclined surface in the range which does not hinder accommodation of the compressor 16 like FIG. 6, it will bite and arrange | position the illuminating device 41a to the corner | angular part of the convex part 40 in a store | warehouse | chamber. However, it is easy to ensure heat insulation without reducing the thickness of the opposing heat insulation walls, and to ensure the filling and fluidity of the rigid urethane foam, which is a foam heat insulating material. It is not a thing. Further, since the heat insulating wall can be highly insulated without increasing the thickness, for example, by providing a vacuum heat insulating material, the stepped portion 26a may have a surface shape as required.

  Moreover, in this Embodiment, although the illuminating device 41b was provided in the area | region containing the corner | angular part of the 2nd convex part 52 in a store | warehouse | chamber so that the storage space on a 2nd stage storage shelf might be faced, according to the above-mentioned main point. The lighting device 41b does not necessarily have to be specified at this position, and is expected to be effective even if the lighting device 41b is disposed at a suitable position on the back surface of the refrigerator compartment 2 instead of being a little further away from the second storage space. Can be almost obtained.

(Embodiment 5)
FIG. 7 shows a schematic cross-sectional view of the refrigerator in the fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  In FIG. 7, the first top surface portion 25 and the second top surface portion 26 are formed by providing a stepped recess in the back direction, and in the heat insulation box 1 composed of a heat insulating material filled therebetween, A condenser 17 and a top cover 34 are fixed to the first top surface portion 25. The inner surface 11 facing the first top surface portion 25 is provided with a concave portion 53 at a substantially central portion in the width direction of the inner top surface portion, and an illumination device 54 is disposed there. 56, a socket 44, a light bulb 43, and a lamp cover 55. In addition, the lighting device 64 is also arranged at the center in the width direction of the back surface of the second storage space 61 from the top of the storage which is the back wall surface below the convex portion 113 in the storage. A socket (not shown), a light bulb 67 and a lamp cover 55 are included.

  Further, as the uppermost storage shelf 8a that divides the storage space in front of the internal convex portion 113, a translucent, for example, transparent resin-molded shelf is used.

  With this configuration, by arranging the lighting on the ceiling surface, the top heat insulating wall of the refrigerator is shaded, and the uppermost stage where indoor lighting such as a kitchen is difficult to reach can be illuminated brightly over almost the entire surface.

  In addition, since the lighting is arranged on both the upper and lower sides of the convex portion 40 in the warehouse, the light reaches the front and the lower side of the convex portion in the warehouse, and the shadow of the convex portion in the warehouse cannot be shaded. You can reduce the feeling of protruding protruding parts in the cabinet.

  Further, if the human vision is the same space, there is a visual effect that the brighter the space is, the wider the visual effect is. Therefore, by arranging the illumination in this way, the uppermost storage shelf 108a is illuminated. Since the uppermost storage shelf 108a that is brightest illuminated and has the smallest depth and the smallest storage space can be felt wider than the actual space, it is possible to further reduce the protruding feeling of the convex portion inside the cabinet that the user visually feels. it can.

  In addition, the two lighting devices are arranged such that the lamps themselves do not form shadows with the other lamp, and the light projection directions are different, so that efficient illumination is possible.

  In addition, since the lighting device 54 is housed in the recess on the top surface of the cabinet, a sufficient space in the lighting device 54 can be secured, and the first top surface portion 25 is warmed by the heat of the condenser 17 and does not condense. Therefore, the lamp cover 55 hardly protrudes into the cabinet. For this reason, it is possible to provide a clean and excellent storage space that does not disturb the storage of food at the top.

  Moreover, since the uppermost storage shelf 8a has translucency, even if the lighting device 54 is arranged on the ceiling surface, the light is not blocked by the shelf, and the space below the second storage shelf is also illuminated. The lighting effect of the device 54 can be exerted.

  In this embodiment, the lighting device 64 is provided so as to face the storage space on the second-stage storage shelf. However, according to the above-described gist, the lighting device 64 is not necessarily specified at this position. Even if it is arranged at a suitable position on the back side of the refrigerator compartment 2 instead of being a little further downward and corresponding to the second-stage storage space, the expected effect can be almost obtained.

  Since the condenser 17 is thin and has a large surface area, it has good heat dissipation efficiency and can be designed to have low ventilation resistance. Therefore, it is possible to improve performance and save energy and to reduce the size of the condenser. Is also possible.

(Embodiment 6)
FIG. 8 shows a schematic cross-sectional view of the refrigerator according to Embodiment 6 of the present invention, and FIG. 9 shows a schematic front view. In addition, the same code | symbol is attached | subjected about the same structure as background art.

  In FIG. 8 and FIG. 9, the heat insulation box 100 comprised by heat insulating materials, such as hard foaming urethane, is divided into a plurality of heat insulation divisions, and the refrigerating room 101 of the revolving door type from the top, A drawer type ice making chamber 102 and a switching chamber 103 arranged in parallel, a drawer type vegetable chamber 104 below, and a drawer type freezing chamber 105 at the bottom are arranged. A heat insulating door is provided in each heat insulating section so as to be sealed through a gasket.

  The refrigerating room revolving door 106 is provided with a door pocket 107 made of a light transmissive material as a storage space, and the refrigerating room warehouse has a storage shelf 108 made of a plurality of light transmissive materials and an outermost storage shelf 108. A storage case 109 that can be pulled out is provided at the bottom. Further, door opening / closing detection means 110 for detecting opening / closing of the refrigerating room rotating door 106 is provided, and detects whether the refrigerating room rotating door 106 is open or closed. The door opening / closing detection means 110 may be a limit switch provided in the cabinet that operates when the door is closed, or may be a non-contact switch using a Hall element that is close to a magnet provided on the door when the door is closed.

  The refrigerator compartment 101 is normally set at 1 to 5 ° C. with the temperature that does not freeze for refrigerated storage as the lower limit. Further, the storage case 109 is set at a relatively low temperature, for example, −3 to 1 ° C. for improving the freshness of meat fish and the like. The vegetable room 104 is often set to a temperature setting of 2 ° C. to 7 ° C. which is equal to or slightly higher than that of the refrigerator room 101. In addition, the vegetable room 104 can maintain the freshness of leafy vegetables for a long time as the temperature is lowered.

  The ice making chamber 102 and the freezing chamber 105 are normally set at −22 to −18 ° C. for frozen storage, but should be set at a low temperature of −30 or −25 ° C., for example, to improve the frozen storage state. There is also. Since the ice making chamber 102 mainly stores ice, an energy-saving operation may be performed at a relatively high freezing temperature setting of −12 ° C. or lower.

  The switching chamber 103 can be switched in multiple stages from the freezing temperature to the vegetable temperature, and can be set with a control panel (not shown) that can be used by the user.

  The top part of the heat insulation box 100 includes a first top surface part 111 and a second top surface part 112 provided at a position lower than the first top surface part 111 on the back side. Therefore, the interior convex part 113 of the 2nd top surface part 112 has arisen in the interior ceiling inner part of the refrigerator compartment 101. As shown in FIG.

  The interior convex portion 113 is located substantially above the uppermost storage shelf 108a in the interior, and each of the areas including the interior corner portions 113a and 113b adjacent to the interior convex portion 113 is provided with a lighting device. A first interior lighting device 114 is provided in a region including the interior corner portion 113a on the upper side of the interior convex portion, and a first region is provided in the region including the adjacent interior corner portion 113b on the rear side of the interior convex portion. Two illumination devices 119 are provided. Specifically, the first interior lighting device 114 is provided in the center on the front wall surface of the interior convex portion. The storage shelf 108 is made of a transparent material such as glass or plastic so that illumination light can pass through.

  The first interior lighting device 114 has a first lamp cover 115 detachably provided so that light diffuses forward and downward, and a socket 117 in which the lamp 116 is detachably provided is provided in the interior rear wall surface. Is attached. The lamp 116 may be an AC type, a DC type, or an LED. Since the heat generation amount is small in the DC type or LED, the heat resistance design of the peripheral members is easy, and the lighting device space can be small. Further, since the lifetime of the LED is long, there is no need to replace the lamp. In addition, if the AC type is a sewing machine ball, the cost of the lamp is low.

  Since the cover can be easily attached and detached, the lamp 116 can be easily replaced.

  In addition, an illumination device storage portion 118 is provided below the interior convex portion 113, and a second interior illumination device 119 is accommodated. If the lighting device storage unit 118 can solve the problem of heat insulation, it is desirable to form the heat insulating material on the back surface of the interior by recessing. In the present invention, sufficient heat insulating material can be secured on the back surface of the recessed portion. The concave portion is formed only in a range that does not affect the heat insulation performance.

  The second interior illuminating device 119 is disposed between the uppermost storage shelf 108a and the second tier storage shelf 108b at a substantially central portion in the width direction when viewed from the front. The position is shifted in the depth direction.

  In addition, the second interior lighting device 119 has a configuration in which a part protrudes from the heat insulating wall surface into the interior, and a second lamp cover 120 that can be attached and detached without a tool is provided on the front surface. Further, similarly to the first lighting device 114, a lamp 116 and a socket 117 are provided inside.

  In addition, a substrate storage unit 121 is formed of an independent recess on the back of the refrigerator compartment 102 of the heat insulation box 100. The substrate storage unit 121 is configured to have a predetermined heat insulating wall thickness below the lighting device storage unit 118 and to have a heat insulating material recessed. The second top surface portion 112, the storage device storage portion 118, and the substrate storage portion 121 are arranged side by side in the vertical direction.

  A control substrate 122 is accommodated in the substrate accommodating portion 121 and is sealed with a substrate cover 123 by form sealing.

  The refrigeration cycle is configured by connecting a compressor 130, a condenser (not shown), a capillary (not shown) as a decompressor, a dryer (not shown) for removing moisture, and an evaporator 132 in an annular shape. Yes. The condenser (not shown) and the evaporator 132 are subjected to forced convection heat exchange between a machine room fan (not shown) and a cooling fan 133.

  The compressor 130 which is a component of the refrigeration cycle is provided in a machine room 134 which is an upper space of the second top surface portion 112, and a condenser (not shown) includes a wire type, a fin coil type, a spiral fin type, and the like. It may be arranged with the cover which forms a duct in the upper part of the 1st top surface 111 by the thin composition of these, and may be provided in the heat insulation box 100 bottom. Moreover, in addition to the forced convection method, in order to prevent drip-proofing by arranging it in the piping for natural heat dissipation using the outer peripheral steel plate of the heat insulation box 100 or the partition between the heat insulation door bodies in each room You may combine piping.

  Further, the machine room 134 is provided with a machine room cover 135 in a one-part or two-part configuration so that the top and back parts can be removed with screws or the like.

  The evaporator 132 which is a component device of the refrigeration cycle is provided with the cooling fan 133 on the back of the vegetable compartment 104 located in the middle stage and the freezer compartment 105 in the lowermost stage.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described. The refrigeration cycle is operated by a signal from the control board 122 according to the set temperature in the refrigerator, and the cooling operation is performed. First, the high-temperature and high-pressure refrigerant discharged by the operation of the compressor 130 dissipates heat in a condenser (not shown), condenses and liquefies, and reaches a capillary (not shown). Thereafter, the pressure is reduced in a capillary (not shown) to become a low-temperature and low-pressure liquid refrigerant and reach the evaporator 132.

  By the operation of the cooling fan 133, heat is exchanged with the air in the warehouse, and the refrigerant in the evaporator 132 is evaporated. Each room is cooled by distributing low-temperature cold air using a damper (not shown) or a duct configuration. When a plurality of evaporators are used, the refrigerant is supplied to the necessary evaporators by a flow path control means (not shown). The refrigerant exiting the evaporator 132 is sucked into the compressor 130 through a suction pipe (not shown).

  When the temperature in each chamber is equal to or lower than the set temperature, the operation of the compressor 130 is stopped.

  Further, when the refrigerating compartment rotating door 106 is opened for the user to take in and out food, the door opening / closing detection means 110 detects the opening of the door, and the control means detects the first and second interior lighting devices 114, 119 is lit. When the refrigerator door 106 is closed, it is turned off.

  By arranging the first lighting device 114 on the back of the uppermost storage shelf 108a, the top heat insulating wall of the refrigerator compartment 101 is shaded to illuminate the uppermost part where indoor lighting is difficult to reach, such as a kitchen. Since the illumination is arranged at a position where only the portion 113 is shifted from the back to the front, the hand can be illuminated brightly. Further, since the storage shelf 108 is also transparent, it does not block the downward light.

  In addition, when lighting is arranged on the ceiling surface, a situation in which light is interrupted by the storage items placed on the uppermost storage shelf 108a is avoided, and the space above the second storage shelf 108b and the space below it are also first. It is possible to illuminate from below the illuminating device 114, and the light is not blocked at the uppermost stage. Further, since the first lighting device 114 is arranged to be shifted forward from the back side, the second and lower storage shelves illuminate not from the back side but from the top side. It is extremely effective in terms of improvement.

  That is, in the illumination arrangement for the refrigerator compartment 101, the illumination for the substantially rectangular parallelepiped interior region below the lower end surface of the interior convex portion 113 is added to the second interior illumination device 119 from the back. It is configured as if it was illuminated from the top surface, and can illuminate this area, which is frequently used on a daily basis, three-dimensionally in the depth direction. A cooling unit including at least a compressor at the top of the refrigerator body Even in the so-called top unit type refrigerator to be arranged, it is possible to realize a practically bright and effective interior lighting by reversing one side that tends to be seen as a demerit due to the presence of the interior convex portion 113, and the refrigerator compartment 101 The usability can be improved more than before.

  In addition, if the first lamp cover 115 is formed so as to wrap around the lower end surface of the first interior lighting device 114, the first lamp cover 115 is placed on the second stage storage shelf 108b via the lamp cover portion on the lower end surface. This space can be illuminated from below the first lighting device 114, and it is more convenient to reliably prevent light from being blocked at the uppermost stage. In this case, if the lamp cover part on the lower end surface and the transparent uppermost storage shelf 108a are substantially flush with each other, there is a clean unity appearance, and the lighting effect is not noticeable and the step is not noticeable. The impression in the cabinet is preferable.

  Furthermore, since the illumination is arranged on the back surface of the second stage, the entire interior can be brightened without the interior convex portion 113 becoming a shadow. As described above, the illumination is arranged on both the upper and lower sides of the internal convex portion 113, so that the light reaches the front and the lower side of the internal convex portion, and the shadow of the internal convex portion cannot be shaded. It is possible to reduce the bulging feeling of the convex part in the cabinet that is visually felt.

  Further, if the human vision is the same space, there is a visual effect that the brighter the space is, the wider the visual effect is. Therefore, by arranging the illumination in this way, the uppermost storage shelf 108a is illuminated. Since the uppermost storage shelf 108a that is brightest illuminated and has the smallest depth and the smallest storage space can be felt wider than the actual space, it is possible to further reduce the protruding feeling of the convex portion inside the cabinet that the user visually feels. it can.

  Moreover, since the illuminating device protrudes inside the cabinet, the light reaches the lower part. In addition, since the lighting device storage section 118 has a recessed heat insulating wall so as not to obstruct the storage in the storage, the storage in the storage is ensured even if a lamp 116 such as a general-purpose and inexpensive sewing sphere is used. can do.

  In addition, since the two lighting devices used on the back are arranged in the depth direction, the lamp itself does not become a shadow of other lamps, and the projection direction of the light is different, enabling efficient illumination. It is.

  Furthermore, since a plurality of lighting devices are arranged in front and below, avoiding the innermost part of the back of the refrigerator compartment 101 that is most difficult for the user to reach, the lamp 116 can be easily replaced.

  The first and second lamp covers 115 and 120 cause serrated light and irregularities on the surfaces thereof to cause irregular reflection of light, and diffuse the illumination to make uniform soft interior illumination.

  In the present embodiment, the second interior lighting device 119 is provided so as to face the storage space on the second storage shelf. However, according to the above-described gist, the second interior illumination device 119 is It does not necessarily have to be specified in this position, and it is possible to obtain almost the expected effect even if it is arranged at a suitable position on the back side of the refrigerator compartment 101, rather than being a little further downward and corresponding to the second storage space. Can do.

  Moreover, if the 2nd lamp cover 120 of the 2nd lighting device 119 is extended below, if it guides also to a lower back surface, the light of a lower shelf will be ensured.

  Moreover, since the 2nd lighting device 119 and the control board 122 were arrange | positioned at the up-down direction, after ensuring the thickness of the heat insulation wall, the efficient structure with few unevenness was attained inside the warehouse.

  In addition, since the 2nd lighting device 119 and the control board 122 were arrange | positioned under the convex part 113 in a store | warehouse | chamber, after ensuring the thickness of a heat insulation wall, the level | step difference in the back direction in the store | warehouse | chamber of the store | warehouse | chamber convex part 113 was reduced. Can look good.

  Further, by disposing the condenser 17 in a section different from the compressor 16, it is not affected by temperature, so that the capacity of the condenser 17 can be maximized and the power consumption can be reduced. .

  In addition, the board storage part 121 has a deep upper part and a shallow lower part. The tall parts on the control board 122 are gathered upward, and the short parts are gathered downward to match the storage form. . Further, by tilting the rear side of the refrigerator compartment below the second interior lighting device 119 downward as it goes downward, the space below the lamp is expanded, and the illumination can be more easily reached below.

  In addition, when the lighting device arranged in the center and the both sides of the control board are used to form a wind path or the like, it is possible to provide a clean refrigerating chamber 101 without causing a useless step in the cabinet. In addition, it can provide a bright interior where the shadow of the lighting device is difficult to appear.

  The second lighting device 119 has a problem that heat tends to be accumulated because it is disposed in a recess provided in the heat insulating wall. However, by providing air holes above and below the second lamp cover 120, convection occurs and temperature is reduced. Is possible. Furthermore, since the lamp is turned on only when the door is opened, it is normally operated for a short time, but in order to respond to long-time lighting on a half-door, etc., a control operation that turns off if continuous lighting for a predetermined time continues is provided. Temperature rise can be prevented.

  As described above, the refrigerator according to the present invention increases the storage capacity of an easy-to-use room by arranging the cooling system unit in a place where it is most difficult for humans to use, and improves the ease of use when putting in and out by lighting. It becomes possible to improve. Moreover, it becomes a cooling system with good heat dissipation efficiency, and it becomes possible to reduce power consumption.

  From the above effects, the present invention can also be applied to uses such as refrigeration equipment other than refrigerators.

Schematic sectional view of the refrigerator in the first embodiment of the present invention. Schematic front view of the refrigerator in the second embodiment of the present invention Schematic rear view of the refrigerator in the second embodiment of the present invention Schematic front view of the refrigerator in Embodiment 3 of the present invention Schematic sectional view of the refrigerator in the third embodiment of the present invention. Schematic sectional view of the refrigerator in the fourth embodiment of the present invention. Schematic sectional view of the refrigerator in the fifth embodiment of the present invention. Schematic sectional view of the refrigerator in the sixth embodiment of the present invention. Schematic front view of the refrigerator in the sixth embodiment of the present invention Schematic sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat insulation box 16 Compressor 17 Condenser 25 1st top | upper surface part 26 2nd top | upper surface part 26a Step part 27 3rd top | upper surface part 27a 2nd step part 32,122 Control board 40,113 Inner convex part 41 , 41a, 41b, 50, 54, 64, 114, 119 Illumination device 48 Refrigerant piping 49 Light emitting element such as fluorescent tube or LED 52 Internal second convex portion 53 Internal concave portion 113a, 113b Internal corner portion

Claims (11)

  The refrigerator main body has a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion on the refrigerator back side to form a stepped portion on the top surface portion of the refrigerator main body, The refrigerator which provided the compressor in the said 2nd top | upper surface part, and provided the illuminating device in the vicinity of the convex part in the store | warehouse | chamber formed facing the said level | step-difference part.   The refrigerator according to claim 1, wherein the lighting device is provided across a front surface and a lower surface of a corner portion of the convex portion in the cabinet.   The refrigerator according to claim 1 or 2, wherein the lighting device provided on the convex portion in the cabinet is provided at a plurality of locations apart from the left and right when viewed from the front.   The refrigerator as described in any one of Claim 1 to 3 which provided the illuminating device provided in the said convex part in a warehouse over the width | variety of the half or more width | variety in a horizontal direction at least from the center seeing from the front.   2. The refrigerator according to claim 1, wherein a plurality of the lighting devices are provided, and the lighting devices are disposed on both upper and lower sides of at least a lower end surface of the in-compart convex portion.   The refrigerator according to claim 5, wherein each of the lighting devices is provided in a region including a corner portion of the internal convex portion and an internal corner portion adjacent to the lower portion of the internal convex portion.   The refrigerator according to claim 5, wherein the lighting device is provided on the inner side of the first top surface portion and on the back wall surface below the convex portion in the chamber.   The refrigerator according to claim 5, wherein the lighting device is provided on a back wall surface on the front side of the convex portion in the cabinet and a back wall surface below the convex portion in the cabinet.   The refrigerator according to any one of claims 1 to 8, wherein the light source of the illumination device is provided with a light emitting element such as a fluorescent tube or an LED.   The refrigerator body has a third top surface portion provided at a position lower than the second top surface portion on the refrigerator back side from the second top surface portion, and from the step portion on the refrigerator back side from the step portion. A second stepped portion is formed at a lower position, a control board and a part of the refrigerant pipe are provided in the space above the third top surface portion, and the interior is formed inside the store facing the second stepped portion. The refrigerator of Claim 1 which provided the illuminating device in the 2nd convex part.   The refrigerator body according to claim 1, wherein the refrigerator body has a control base disposed on a back wall surface other than a projection surface in a horizontal direction of the lighting device.

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