JP6706749B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator, and more particularly, to a cooling structure of a low temperature storage room provided in a refrigerating room.

Generally, a household refrigerator includes a refrigerating room, a vegetable room, a freezing room, and the like, and a chilled room (lower than the refrigerating room and having a temperature range of about 1° C.) that is cooled to a temperature lower than the refrigerating room. Room) or a partial room (a room having a slight freezing temperature zone of about -3° C.) or a low temperature storage room such as a third temperature zone room that can be switched to these (see, for example, Patent Document 1). ..

15 and 16 show a refrigerator described in Patent Document 1, which is provided with a cold storage room 102 below a refrigerating room 101, and the cold storage room 102 is a shelf whose upper surface is located at the bottom of the refrigerating room 101. It is configured by being covered with a shelf plate member 103 which is also used as a plate.

The shelf member 103 is integrated with a heat insulating material 104 to insulate the interior of the low temperature storage chamber 103 from the refrigerating chamber 101 having a relatively high temperature, and the cold air duct portion 105 is provided in the heat insulating material 104 to cool the refrigerator. The cold air sent from the main body 106 side is supplied into the low temperature storage chamber 102.

Further, an illuminating device 107 for illuminating the inside of the low temperature storage room 102 is provided by providing an inclined surface on the lower front surface of the shelf member 103.

JP 2012-220047 A

The low temperature storage chamber described in Patent Document 1 can cool the air by blowing cold air from a large number of cold air outlets 108 provided in the cold air duct portion 105. It can be cooled to a temperature, for example, a low temperature of about 1° C. or −3° C. as described above, and is suitable for refrigerating and storing meat, fish, etc.

However, the cold air outlet 108 provided in the cold air duct portion 105 is not formed in the front portion of the shelf plate member 103 where the cold air duct portion 105 serves as the ceiling of the low temperature storage chamber 102.

Therefore, the front portion of the low temperature storage chamber 102 tends to be insufficiently cooled, and temperature unevenness tends to occur in the low temperature storage chamber 102. In addition, dew condensation may occur locally due to such temperature unevenness.

The invention was made in view of the above problems, it is intended to provide a refrigerator to prevent the front portion of the savings built chamber becomes insufficient cooling.

The present invention is a refrigerator comprising at least a refrigerating compartment, wherein a plurality of shelves are provided in the refrigerating compartment in a vertical direction, and a shelf board member which is the lowermost shelf among the plurality of shelves is a ceiling , A storage room having a container that can be drawn out , a cold air duct provided inside the shelf member through which cold air flows, and a cold air duct provided on the lower surface of the shelf member from the cold air duct to the inside of the storage chamber. A cold air outlet for introducing cold air into the storage chamber, and a lighting device for illuminating the inside of the storage chamber, a part of the lower surface of the shelf board member is a recessed shape that is recessed inside the shelf board member, The lighting device is provided in the recessed portion, the cold air duct is extended to the front side of the storage chamber from the recessed portion where the lighting device is provided, the cold air outlet is The lower surface of the shelf member is provided on the front side of the storage chamber with respect to the lighting device, and the lower surface of the shelf member is not provided on the rear side of the storage chamber with respect to the lighting device.

The present invention can prevent the front portion of the savings built chamber becomes insufficient cooling.

Front view of the refrigerator according to Embodiment 1 of the present invention The front view when the door of the refrigerator in the first embodiment is opened. Vertical sectional view of the refrigerator in the first embodiment FIG. 3 is an enlarged perspective view of a low temperature storage chamber provided in a lower portion of the refrigerator in the refrigerator according to the first embodiment. The expanded sectional view of the low temperature storage room of the refrigerator in the same Embodiment 1. The top view of the state which removed the upper heat insulating material of the shelf board member which comprises the low temperature storage room of the refrigerator in the same Embodiment 1. The top view which shows the cold storage room bottom part of the refrigerator in the same Embodiment 1. 6 is a cross-sectional view taken along the line AA of FIG. 6 showing the refrigerator in the first embodiment. 6 is a cross-sectional view taken along the line BB of FIG. 6 showing the refrigerator according to the first embodiment. Explanatory drawing which shows the illumination state in the cold storage room of the refrigerator in the same Embodiment 1. Explanatory drawing which shows the illumination state at the time of pulling out the low temperature storage chamber container of the refrigerator in the same Embodiment 1. The perspective view which looked at the shelf board member which comprises the low temperature storage room of the refrigerator in the same Embodiment 1 from the upper part. The perspective view which looked at the shelf board member which comprises the low temperature storage room of the refrigerator in the Embodiment 1 from the lower part. Exploded perspective view of the shelf member that constitutes the low temperature storage chamber of the refrigerator in the first embodiment Schematic cross-sectional view showing a low temperature storage room portion of a conventional refrigerator Enlarged sectional view showing the structure of the conventional low temperature storage room

A first invention comprises a refrigerator body, a refrigerating compartment provided in the refrigerator body, and a low temperature storage compartment defined by a shelf member at a lower portion of the refrigerating compartment, and a shelf board member serving as a ceiling of the low temperature storage compartment. Is a refrigerator provided with a heat insulating material that insulates the cold storage room from the cold storage room, wherein the heat insulating material is provided with a cold air duct part for taking in cool air from the cold air passage on the back of the refrigerator body, and the cold air duct part is provided. The heat insulating material is provided up to substantially the front end of the shelf board member, and the cold air duct portion is formed to extend to the front end portion of the heat insulating material, and the cool air blowout port is concentrated on the cold air duct portion of the heat insulating material front end portion. In addition, the cold air return port is provided in the rear part of the low temperature storage chamber.

As a result, cold air can be supplied to the front part of the low temperature storage chamber and it is possible to prevent the part from becoming inadequately supplied with cold air, and the cold air supplied to the front part of the low temperature storage chamber is cooled by the cold air return port at the rear of the low temperature storage chamber. Since it flows to, that is, from the front portion of the cold storage chamber to the rear, the cold storage chamber can be uniformly cooled. Therefore, it is possible to suppress the temperature unevenness in the low temperature storage chamber and the generation of dew condensation due to the temperature unevenness, and it is possible to cool and store the food in a good state and improve the reliability.

In a second aspect based on the first aspect, a concave portion is formed on the lower surface between the front and rear depth directions of the shelf plate member so as to bite into a cold air duct in a heat insulating material, and an illumination device is provided in the concave portion. The cold air outlet is provided in the front part of the lighting device.

This makes it possible to illuminate the inside of the cold storage, so that it is possible to improve the visibility of the interior and at the same time, it is possible to supply cool air to the front part of the cold storage even if a lighting device is provided. It is possible to reliably suppress the temperature unevenness and the occurrence of dew condensation.

According to a third aspect of the present invention, in the second aspect of the present invention, the heat insulating material of the shelf plate member forms a cold air duct portion while leaving a heat insulating wall zone in an outer peripheral portion of a recess provided with a lighting device.

As a result, even if there is a cold air duct part around which the cool air flows, the cool air flowing in the cool air duct part is insulated by the heat insulating wall zone around the recess provided with the light device. It is possible to prevent the occurrence of dew condensation on the illuminating device when it is cooled, to realize uniform cooling in the low temperature storage chamber, and to eliminate the risk of malfunction due to dew condensation of the illuminating device.

4th invention is a structure which arrange|positioned the heater in the 1st-3rd invention at the bottom face part which opposes the refrigerator main body back side part of the cold temperature storage chamber in which the said cold air outlet is not formed intensively.

As a result, it is possible to suppress overcooling in the vicinity of the rear portion of the low temperature storage chamber, which tends to lower the temperature due to cold radiation from the low temperature cold air from the cold air passage on the rear side of the refrigerator body, and to more reliably suppress the uneven temperature and dew condensation in the low temperature storage chamber. It is possible to further improve the reliability.

In a fifth aspect based on the fourth aspect, the refrigerator main body is provided with a water supply tank chamber for ice making at a side portion of the low temperature storage chamber, and a heater is arranged at a bottom portion of the low temperature storage chamber adjacent to the water supply tank chamber. There is a configuration.

As a result, even if a water tank room is provided next to the cold storage room that cools to a relatively low temperature, the cold air in the cold storage room and the cold radiation from the cold air in the cold air passage on the back of the refrigerator main body cause water to pass through the water tank room. It is possible to prevent the passage from freezing, to suppress temperature unevenness and dew condensation in the widened low temperature storage chamber while expanding the low temperature storage chamber to the water supply tank chamber portion, thereby improving reliability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment.

(Embodiment 1)
1 to 14 show the first embodiment of the present invention. First, the overall configuration of the refrigerator will be described.

1 to 3, the refrigerator according to the present embodiment includes a refrigerator main body 1 having an open front, and the refrigerator main body 1 includes an outer box 2 mainly made of a steel plate and an ABS as shown in FIG. It is composed of an inner box 3 molded from a hard resin such as, and a foamed heat insulating material 4 such as a hard urethane foam filled between the outer box 2 and the inner box 3.

The refrigerator main body 1 is divided into a plurality of storage chambers by partition plates 5, 6, and 6a. The refrigerator main body 1 has a refrigerating chamber 7 at the top, a switching chamber 8a located below the refrigerating chamber 7, and a switching chamber 8a. And the freezing compartment 9 located below the switching compartment 8a and the ice making compartment 8b, and the vegetable compartment 10 located below the freezing compartment 9.

The front opening of each storage chamber is closed by doors 11a, 11b, 11c, 11d, and 11e so that it can be opened and closed.

A machine room 14 is provided in an upper rear area of the refrigerator body 1. The high-pressure side components of the refrigeration cycle, such as a compressor 15 and a dryer (not shown) for removing water, are housed in the machine room 14.

Further, a cooling chamber 16 for generating cold air and a cold air passage 17 for circulating the cold air from the cooling chamber 16 to the refrigerating room 7, the vegetable room 10 and the freezing room 9 are provided on the back surface of the refrigerator body 1.

A cooler 19 is arranged in the cooling chamber 16, and a cooling fan 20 is arranged above the cooler 19. The cooling fan 20 forcibly circulates the cool air cooled by the cooler 19 to the refrigerating compartment 7, the vegetable compartment 10 and the freezing compartment 9 through the cool air passage 17 to cool each compartment.

For example, the refrigerating compartment 7 is cooled to a temperature of 1° C. to 5° C. at which food is not frozen, and the vegetable compartment 10 is cooled to a temperature equal to or slightly higher than the refrigerating compartment 7 to 2° C. to 7° C. Further, the freezer compartment 9 is normally cooled to a freezing temperature zone of -22°C to -15°C for freezing storage, and in some cases, for improving the frozen storage state, for example, at a low temperature of -30°C or -25°C. It may be cooled to.

The refrigerating compartment 7 cooled by the cool air from the cooling compartment 16 is provided with a plurality of shelves 21 on which food materials are placed, and a lighting device (not shown) is installed in the front part of the side wall. When the door 11a is opened, the light is turned on to illuminate the inside of the refrigerator compartment 7.

Further, in the refrigerating chamber 7, a water supply tank chamber 22 in which a water supply tank for ice making is installed in the lower portion thereof and a chilled chamber adjacent to the water tank chamber 22 adjacent to the water tank chamber to a temperature zone of about 1° C. or a slight freezing of about −3° C. A low-temperature storage chamber 23 that can be switched to a partial chamber that is cooled to a temperature zone is formed by division.

The low temperature storage chamber 23 is not one that can be switched to the chilled chamber or the partial chamber, but may be a dedicated one designed as the chilled chamber or the partial chamber.

Hereinafter, the configuration of the low temperature storage chamber 23 will be described with reference to FIGS.

First, the low temperature storage chamber 23 is formed by partitioning the upper surface thereof with a shelf plate member 24 used also as a shelf plate located at the lowest stage of the refrigerating room 7 and a partition plate 22a for partitioning the water supply tank chamber 22 on the side surface. A container 25 that can be pulled out is provided inside, and the front of the container is closed by a lid plate 26 that is opened by pivoting around the front end of the shelf plate member 24 when the container 25 is pulled out.

As shown in FIGS. 5 and 14, the shelf plate member 24 includes an upper plate 28 made of a glass plate or the like mounted on a synthetic resin shelf frame member 27 and a lower plate plate made of synthetic resin. 29 and a heat insulating material 30 such as Styrofoam provided between them.

Further, the heat insulating material 30 is formed with a cold air duct portion 32 having a large number of cold air blowout ports 31 opening to the lower frame plate 29, and the cold air duct portion 32 is set in the refrigerating chamber 7 so that the cold air duct portion 32 can be installed in the refrigerator body. The cold air is supplied to the cold air passage 17 on the rear surface of the first cold air supply chamber, and the cold air cools the inside of the low temperature storage chamber 23.

Here, the heat insulating material 30 provided with the cold air duct portion 32 is provided up to substantially the front end of the shelf member 24, and the cold air duct portion 32 is formed to extend to the front end portion of the heat insulating material 30. The aforementioned cold air outlet 31 is formed in the cold air duct portion at the front end portion.

In this embodiment, as shown in FIGS. 5 and 6, the cool air outlet 31 is formed on the front side of the lighting device described later, and is behind the lighting device, that is, near the rear part of the refrigerator body 1 is a non-hole portion. As a result, the cold air outlet 31 is concentrated at the front end portion.

As shown in FIG. 5, a cold air return port 43 is provided on the back side of the refrigerator body 1 facing the cold air outlet 31, that is, on the rear part of the low temperature storage chamber 23.

Further, as shown in FIG. 7, a heater 44 is laid at a rear portion of the bottom surface of the low temperature storage chamber 23 where the cold air outlets 31 are not centrally formed and which faces the rear side portion of the refrigerator main body.

The heater 44 is embedded in the partition plate 5 that forms the bottom surface of the low temperature storage chamber 23, and is arranged so as to surround the outer peripheral portion of the non-perforated portion near the rear portion of the refrigerator body 1. That is, the rear side 44b and both side sides 44c except the front side 44a are arranged so as to be located at the corners of the low temperature storage chamber 23. Further, the heater 44 has a shape in which the cold air return port 43 and the vicinity of the water supply tank chamber 22 are folded back to make the wiring dense.

Further, as shown in FIG. 8, the heat insulating material 30 of the shelf member 24 is formed by polymerizing an upper heat insulating material 30a and a lower heat insulating material 30b, and any one of the upper heat insulating material 30a and the lower heat insulating material 30b is formed. The cold air duct portion 32 is formed by a recess formed in one or both joint surfaces.

Further, the upper and lower heat insulating materials 30a and 30b of the heat insulating material 30 are press-fitted and attached to the lower frame plate 29 of the shelf member 24, and the rear portion thereof is connected to the cold air passage 17 of the refrigerator body 1 as shown in FIG. A cold air inlet 33 for connection is provided.

Further, as shown in FIG. 8, the lower surface of the shelf member 24, that is, the lower frame plate 29 is formed with a concave portion 34 which is recessed in such a manner as to bite into the cold air duct portion 32 in the heat insulating material 30. The recess 34 is fitted into the through hole 30c formed in the lower heat insulating material 30b, and the lighting device 35 is provided inside thereof.

The recess 34 is formed in a portion closer to the front than the center of the shelf member 24 in the front-rear depth direction so that the lighting device 35 is located in the portion closer to the front of the low temperature storage chamber 23. In this embodiment, the recess 34, i.e., the lighting device 35 is located further forward than the rear end of the top opening of the container 25 drawn out from the low temperature storage chamber 23, as shown in FIG.

Further, as shown in FIG. 6, the outer peripheral portion of the concave portion 34 of the heat insulating material 30 accommodating the lighting device 35 becomes the cold air duct portion 32 while leaving the heat insulating wall zone 36. That is, the cold air duct portion 32 is continuously formed in the front portion of the lighting device 35, and the cold air can be supplied to the front portion of the low temperature storage chamber 23 from the cold air outlet 31.

The heat insulating wall zone 36 formed on the outer peripheral portion of the recess 34 is formed so that the heat insulating zone is wider at a portion facing the cold air inlet 33 than at other portions.

On the other hand, as shown in FIGS. 8 and 9, the illumination device 35 provided in the recess 34 covers a substrate 37, a light source body 38 including LEDs provided on the substrate 37, and a lower portion of the light source body 38. It is composed of a transparent cover 39. Then, the illumination device 35 fits the substrate 37 into the holding piece 40 provided in the recess 34 of the lower frame plate 29 of the shelf plate member 24 and engages with the claw, and the transparent cover 39 holds the holding piece 40. The lower frame plate 29 is unitized by being fitted to the outside and engagingly mounted in the recess 34.

Further, as shown in FIG. 6, the upper heat insulating material 30a and the lower heat insulating material 30b constituting the heat insulating material 30 of the shelf member 24 are provided with a wiring groove 41 formed by a recessed method similar to the cold air duct portion 32. The lead wire 42 of the illuminating device 35 is connected to a power supply lead wire (not shown) on the refrigerator body 1 side from the opening 24a in the rear end portion of the shelf member 24 through the wiring groove 41.

In this embodiment, as shown in FIG. 6, the wiring groove 41 is formed from one end of the recess 34 toward the front so as to avoid the cold air outlet 31 of the cold air duct portion 32, and is bent laterally as it is. Further, it is bent and formed rearward along the side surface of the shelf plate member 24.

The opening 24a of the shelf plate member 24 is closed by a closing plate 44 (see FIG. 4) after the wiring process.

Further, as shown in FIGS. 10 and 11, the low temperature storage chamber 23 detects whether the container 25 is taken in or out by the container detection switch 45, and also detects the temperature by the temperature sensor 46 to control the supply of cold air to a predetermined temperature. It is designed to cool down.

Next, the operation and effect of the refrigerator configured as described above will be described.

When the refrigerator according to the present embodiment starts the cooling operation, the cold air generated in the cooling chamber 16 is supplied to the refrigerating room 7, the vegetable room 10 and the freezing room 9 through the cold air passage 17, and the shelf member 24 is also provided. The cold air is supplied from the cold air outlet 31 to the low temperature storage chamber 23 via the cold air duct portion 32 provided in the.

At this time, since the cold air outlet 31 has the cold air duct portion 32 provided in the heat insulating material 30 of the shelf member 24 extending to the front end of the shelf member 24 and is concentratedly provided at the front end portion. It is possible to supply sufficient cool air to the front part of the low temperature storage chamber 23 and prevent the part from becoming deficient in cold air supply.

Then, the cold air blown out from the cold air blowout port 31 at the front end portion of the shelf board member 24 flows to the cold air return port 43 behind the low temperature storage chamber 23. That is, the cold storage chamber 23 flows from the front portion to the rear portion.

Therefore, the inside of the low temperature storage chamber 23 can be uniformly cooled from the front portion to the rear portion thereof.

As a result, it is possible to suppress the temperature unevenness in the low temperature storage chamber 23 and the occurrence of dew condensation due to the temperature unevenness, and it is possible to cool and store the food in a good state and enhance the reliability.

In addition, since the heater 44 is disposed on the bottom surface portion of the cold/hot storage chamber 23 where the cold air outlet 31 is not centrally formed and faces the rear surface side of the refrigerator main body 1, a low temperature from the cold air passage 17 on the rear surface of the refrigerator main body is provided. It is possible to suppress overcooling in the vicinity of the back surface portion of the low temperature storage chamber 23, which easily lowers the temperature due to cold radiation of cold air, and to more reliably suppress temperature unevenness and dew condensation in the low temperature storage chamber 23. Therefore, the reliability can be further improved.

In particular, as shown in FIG. 7, the heater 44 is arranged along a rear corner of the low temperature storage chamber 23 in which cold air supercooled by low temperature cold air from the cold air passage 17 on the rear surface of the refrigerator body is likely to stay. Therefore, it is possible to effectively suppress the supercooling of the portion and efficiently suppress the occurrence of temperature unevenness.

Further, since the heater 44 is arranged at the bottom of the portion adjacent to the water supply tank chamber 22 along the boundary between the water supply tank chamber 22 and the water supply tank chamber 22, the cool air in the low temperature storage chamber 23 and the cold air passage 17 on the rear surface of the refrigerator main body are provided. It is possible to prevent the water passage in the water supply tank chamber 22 from being frozen due to cold radiation of the low temperature cold air. Therefore, it is possible to expand the low temperature storage chamber 23 to the portion of the water supply tank chamber 22 and suppress temperature unevenness and dew condensation to improve reliability.

In particular, since the heater 44 has a portion close to the water supply tank chamber 22 and a portion near the cool air return port 43 folded back to make the wiring dense, a portion of the heater 44 near the water supply tank chamber 22 and a portion near the cool air return port 43 are likely to become low in temperature. It is possible to reliably suppress the temperature decrease, suppress the temperature unevenness in the low temperature storage chamber 23 and the occurrence of dew condensation, and improve the reliability.

Further, in this refrigerator, the cold air duct portion 32 is provided so as to surround the lighting device 35 provided on the shelf member 24, and the cold air outlet 31 is provided in the front portion of the lighting device 35. When cold air is blown from the front part to prevent the part from becoming inadequately supplied with cold air and the inside of the cold storage room 23 can be uniformly cooled, and when the door 11a of the refrigerating room 7 is opened, a lighting device in the refrigerating room (not shown). Along with this, the lighting device 35 of the low temperature storage room 23 is also turned on to illuminate the inside of the low temperature storage room 23. Therefore, the visibility of the food stored in the low temperature storage chamber can be improved.

In particular, in the present embodiment, since the lighting device 35 is provided on the lower surface between the front and rear depth directions of the shelf member 24, the light from the light source body 38, as shown in FIG. Irradiate up to. Therefore, it is possible to make the interior of the low temperature storage room 23 bright, and the foodstuffs stored in the low temperature storage room 23 can be clearly viewed.

Further, in this embodiment, since the lighting device 35 is provided so as to be located in front of the rear end of the upper surface opening of the container 25 pulled out from the low temperature storage chamber 23, the lighting device 35 is shown in FIG. As shown, the inside of the container 25 can be irradiated, and the visibility of the food material when the container 25 is pulled out can be improved.

On the other hand, in the cold storage room 23, the cold air flows through the cold air duct portion 32 around the lighting device 35 to cool the lighting device 35. The cold air flowing in the cold air duct portion 32 is illuminated. Since it is insulated by the insulating wall zone 36 around the recess 34 provided with the device 35, it is possible to prevent the lighting device 35 from being overcooled. Therefore, dew condensation does not occur in the lighting device 35, and it is possible to eliminate the concern of short-circuit failure or the like due to dew formation and adhesion, and to make the device highly reliable.

In particular, in this embodiment, the heat insulating wall zone 36 around the recess 34 accommodating the lighting device 35 is heat-insulated in a portion facing the cold air inlet 33 at the rear end of the shelf member 24 as shown in FIG. Since the wall band width is formed wider than the heat insulating wall band of the other part, the reliability can be made higher.

That is, the portion of the recess 34 facing the cold air introduction port 33 is directly cooled by the cold air from the cold air introduction port 33 and is strongly cooled, so that dew condensation easily occurs. However, in this embodiment, the width of the heat insulating wall zone 36 in the portion facing the cold air inlet 33 is particularly wide, so that strong cooling due to direct collision of the cold air from the cold air inlet 33 can be strongly insulated. . Therefore, the portion of the lighting device 35 facing the cold air inlet 33 is surely prevented from being overcooled to prevent the occurrence of dew condensation on the lighting device 35, and the risk of short-circuit failure due to dew condensation is more surely prevented. Reliability can be improved.

Further, since the lighting device 35 is provided at a portion closer to the front than the center in the front-rear depth direction of the low temperature storage chamber 23, even from the cold air storage chamber having a short depth dimension in the front-rear direction, from the cold air inlet 33 to the lighting device 35. It is possible to secure the size of the cold air duct portion 32 of a predetermined value or more. As a result, it is possible to suppress an increase in the inflow resistance of the cold air into the cold air duct portion 32, to make the cold air supply into the low temperature storage chamber 23 good, and to make the low temperature storage chamber 23 have a low temperature of −3° C. Even if it is a chamber, it can be cooled reliably and uniformly to that temperature.

Further, since the lower part of the light source body 38 of the lighting device 35 is covered with the transparent cover 39, it is possible to prevent the outside air, which is apt to occur when the door 11a of the refrigerating compartment 7 is opened and closed, from entering the light source body 38 portion. Also, dew condensation due to invasion of outside air can be prevented. Moreover, since the transparent cover 39 is provided, a creeping distance to the light source body 38 can be secured, and static electricity flows from the hands or the like to the light source body 38 or the substrate 37 when the food is put in or taken out from the low temperature storage chamber 23, thereby damaging it. It is also possible to prevent such things. Therefore, its reliability is further enhanced.

On the other hand, in the shelf member 24, the upper heat insulating material 30a and the lower heat insulating material 30b are polymerized to form the cold air duct portion 32 therebetween, so that the cold air duct portion 32 can be easily formed and the productivity is high. can do. That is, the upper and lower heat insulating members 30a and 30b in which the cold air passage recesses are formed (the cool air passage recesses may be provided in only one of the upper and lower heat insulating members 30a and 30b) are combined. The cold air duct portion 32 can be formed only by itself, and the productivity is dramatically improved as compared with the case where the cold air duct portion is formed by hollowing out one heat insulating member. Moreover, since the cool air passage recesses may be formed on the overlapping surfaces of the upper and lower heat insulating members 30a and 30b, any shape can be formed, the degree of freedom of the cold air passage shape is improved, and the low temperature storage chamber 23 can be formed. The whole can be cooled efficiently.

Further, since the wiring groove 41 through which the lead wire 42 of the illuminating device 35 passes is also formed by the same recessed method as the cold air duct portion 32, the flexibility of the wiring groove shape is improved as in the case of the cold air duct portion 32. .. Therefore, it is possible to form the wiring groove 41 at a position where it is unlikely to be affected by the cool air flowing through the cool air duct portion 32, prevent condensation of the wiring itself, and improve reliability. In addition, it is not necessary to separately prepare a lead wire mounting member or the like and mount this on the shelf board member 24 to form a lead wire wiring portion, and it is possible to reduce the number of members and the number of assembly steps by rationalizing the configuration, Productivity can be improved and cost reduction can be promoted.

Further, since the lighting device 35 is unitized by mounting the substrate 37 and the transparent cover 39 in the recess 34 provided in the lower frame plate 29 of the shelf member 24, a space between the upper plate 28 and the lower frame plate 29 is provided. At the same time assembling the shelf member 24 by incorporating the upper and lower heat insulating materials 30a and 30b, the assembling of the lighting device 35 is completed. Therefore, the productivity is improved, the number of parts to be transported in the assembly process can be reduced, and the light source body 38 and the like can be easily handled.

In particular, as shown in this embodiment, by providing a recess for the cool air duct portion 32 and a recess for the wiring groove 41 on the side of the lower heat insulating material 30b having the through hole 30c, the shelf board member 24 can be easily assembled. In particular, productivity can be further improved.

More specifically, first, the substrate 37 and the transparent cover 39 are sequentially fitted and mounted in the concave portion 34 of the lower frame plate 29 of the shelf member 24 to unitize the lighting device 35. Next, unitized lower frame plate 29
Is turned over and the lower heat insulating material 30b is fitted into the lower frame plate 29. In this state, as shown in FIG. 9, the lead wire 42 from the substrate 37 is drawn out from the hole portion Y of the concave portion 34 in which the substrate 37 is fitted, and is drawn to the wiring groove concave portion formed in the lower heat insulating material 30b. The assembly is completed by stacking the upper heat insulating material 30a from above and setting the upper plate 28 integral with the shelf frame member 27. In other words, the lighting device 35 can be incorporated and the lead wire 42 can be wired only by the side of the lower heat insulating material 30b fitted and attached to the lower frame plate 29. For example, the lighting device 35 is mounted on the side of the lower heat insulating material 30b, and the lead wire 42 is Compared with the case where the upper heat insulating material 30a is mounted, the assembling property is remarkably improved and the productivity is improved.

Although not shown, the low temperature storage chamber 23 illustrated in this embodiment is configured such that the amount of cold air supplied to the cold air duct portion 32 is adjusted by a damper or the like so that the low temperature storage chamber 23 can be switched to a partial chamber or a chilled chamber. is there.

As described above, the refrigerator of the present invention can supply cold air to the front part of the low temperature storage chamber 23 and prevent the part from becoming inadequately supplied with cold air, and is supplied to the front part of the low temperature storage chamber 23. The cold air flows to the cold air return port 43 at the rear of the low temperature storage chamber, and the inside of the low temperature storage chamber 23 can be cooled uniformly. Therefore, it is possible to suppress the temperature unevenness in the low temperature storage chamber 23 and the generation of dew condensation due to the temperature unevenness, and it is possible to improve the cold preservation performance of the food and enhance the reliability.

Although the present invention has been described using the above embodiment, it is needless to say that the present invention is not limited to this, and can be variously modified within the scope of achieving the object of the present invention.

For example, in the above-described embodiment, the cold air outlet 31 for supplying the cool air to the low temperature storage chamber 23 is provided only in the front portion and the vicinity of the rear portion of the refrigerator body 1 is a non-perforated portion. You may provide the cold air blowout opening 31 of about an individual number. In other words, the cool air outlet 31 may be concentratedly formed in the front end portion so that the cool air blown from the front end portion occupies most of the vicinity of the back surface portion of the refrigerator body 1.

As described above, it should be considered that the embodiments disclosed this time are exemplifications in all points and not restrictive. In other words, the scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

INDUSTRIAL APPLICABILITY The present invention can suppress the temperature unevenness in the low temperature storage chamber and the occurrence of dew condensation to provide a highly reliable refrigerator. Therefore, it can be widely applied not only for home use but also for many purposes such as a commercial refrigerator and a showcase.

1 Refrigerator Main Body 7 Refrigerator Room 14 Machine Room 15 Compressor 16 Cooling Room 17 Cold Air Passage 18 Back Wall Body 19 Cooler 20 Cooling Fan 21 Shelf Board 22 Water Supply Tank Room 23 Cold Storage Room 24 Shelf Board Member 25 Container 26 Lid Board 27 Shelf Frame member 28 Upper plate 29 Lower frame plate (lower plate)
30 Heat Insulation Material 31 Cold Air Outlet 32 Cold Air Duct 33 Cold Air Inlet 34 Recess 35 Lighting Device 36 Insulation Wall Band 37 Substrate 38 Light Source 39 Transparent Cover 40 Holding Piece 41 Wiring Groove 42 Lead Wire 43 Cold Air Return 44

Claims (8)

A refrigerator having at least a refrigerating compartment, wherein a plurality of shelves are provided in the refrigerating compartment in a vertical direction, and a shelf plate member which is the lowermost shelf of the plurality of shelves serves as a ceiling, and is a drawable container Introducing cold air into the inside of the storage chamber from a storage chamber having a cold air duct provided inside the shelf member, a cool air duct through which cold air flows, and a cold air duct provided on a lower surface of the shelf plate member. A cold air blowout port for and a lighting device that illuminates the inside of the storage chamber are provided, and a part of the lower surface of the shelf plate member is a concave shape that is recessed inside the shelf plate member, and the lighting device is The cold air duct is provided in the recessed portion, the cold air duct is extended to a front side of the storage chamber with respect to the recessed portion where the lighting device is provided, and the cold air outlet is the shelf board. A refrigerator characterized in that it is provided on a lower surface of a member on a front side of the storage chamber than the lighting device, and is not provided on a lower surface of the shelf member on a rear side of the storage chamber with respect to the lighting device. The refrigerator according to claim 1, further comprising a temperature sensor provided behind the storage chamber. The refrigerator according to claim 1 or 2, wherein a cold air return port is provided behind the storage chamber. The refrigerator according to claim 1, wherein the storage room is a chilled room. The refrigerator according to claim 1, wherein the storage room is a partial room. 4. The refrigerator according to claim 1, wherein the storage room can be switched to a chilled room or a partial room. The refrigerator according to any one of claims 1 to 6, wherein the shelf member includes a heat insulating material inside, and the cold air duct is provided inside the heat insulating material. The refrigerator according to claim 7 wherein the heat insulating material, characterized in that Ri Oh styrene foam superimposed vertically, the said cold air ducts between the styrofoam upper Styrofoam and lower are provided.