JP2016200318A - refrigerator - Google Patents

Abstract

A refrigerator capable of cooling uniformly while improving visibility in a low-temperature storage room. A recess 34 is formed on the lower surface of a shelf plate member 24 serving as a ceiling of a low-temperature storage chamber 23, and a lighting device 35 is provided in the recess. 32 is provided, and a cold air duct portion is provided in front of the lighting device so that cold air can be supplied into the low temperature storage chamber. Thereby, an illuminating device can be provided in the horizontal direction on the lower surface of a shelf board member, and the visibility of the back of a low-temperature storage chamber can be improved. In addition, cold air can be supplied to the front portion of the low temperature storage chamber to uniformly cool the low temperature storage chamber. In addition, even if the surroundings of the lighting device is a cold air duct through which cold air flows, there is no possibility that condensation occurs in the lighting device due to heat insulation by the heat insulation zone, and there is no concern about failure due to condensation. it can. [Selection] Figure 5

Description

  The present invention relates to a refrigerator, and more particularly to an illumination configuration of a low-temperature storage room provided in the refrigerator compartment.

  In general, a home refrigerator includes a refrigeration room, a vegetable room, a freezing room, and the like, and the chilled room is cooled to a temperature lower than that of the refrigerated room (a temperature range of about 1 ° C. lower than that of the refrigerated room). Room) or a partial room (a room having a slight freezing temperature range of about −3 ° C.) or a low temperature storage room such as a third temperature zone room which can be switched to these can be seen. (For example, refer to Patent Document 1).

  14 and 15 show a refrigerator described in Patent Document 1. This refrigerator is provided with a low-temperature storage chamber 102 in the lower part of the refrigerating room 101, and this low-temperature storage room 102 has a shelf whose upper surface is positioned at the lowest stage of the refrigerating room 101. It is configured to be covered with a shelf member 103 that is also used as a plate. And the shelf member 103 is integrated with a heat insulating material 104 to insulate the inside of the low temperature storage chamber 103 from the refrigerating chamber 101 having a relatively high temperature, and a cold air duct portion 105 is provided in the heat insulating material 104, The configuration is such that cold air sent from the refrigerator main body 106 side is supplied into the low temperature storage chamber 102. Further, an illumination device 107 for irradiating the inside of the low temperature storage chamber 102 is provided on the lower surface of the shelf board member 103 separately from the illumination device in the refrigerator compartment 101.

JP 2012-220047 A

  The low temperature storage chamber described in Patent Document 1 irradiates the inside of the low temperature storage chamber 102 by the lighting device 107 provided on the shelf member 103 separately from the lighting device in the cold storage chamber 101. Even if the light from the lighting device is blocked by the heat insulating material 104 of the shelf board member 103, there is an advantage that the internal food can be easily seen.

  However, in the refrigerator described in Patent Document 1, since the lighting device 107 is provided on the inclined step portion 108 provided on the lower surface of the shelf plate member 103, the inclined step portion 108 provided with the lighting device 106 of the shelf plate member heat insulating material 104. Since the front portion is a thin portion and the cold air duct portion 105 does not exist, the cold air tends to be insufficiently supplied to the front portion of the low temperature storage chamber 102. As a result, temperature unevenness tends to occur in the low temperature storage chamber 102.

  In addition, since the lighting device 106 is provided along the inclined step portion 105, the visibility of the food stored in the back of the low-temperature storage chamber 106 has been one step further.

  This invention is made | formed in view of such a point, and it aims at provision of the refrigerator which can cool the said low-temperature storage chamber uniformly, raising the visibility in a low-temperature storage chamber.

  In order to achieve the above-mentioned object, the present invention forms a recess toward the heat insulating material side of the shelf member on the lower surface of the shelf member that becomes the ceiling of the low-temperature storage chamber, and provides an illumination device in this recess, A cold air duct portion is formed in the outer peripheral portion of the recessed portion of the heat insulating material while leaving a heat insulating zone, and a cold air duct is provided in front of the lighting device so that cold air can be supplied into the low temperature storage chamber.

  Thereby, cold air can be supplied also to the front part of the low-temperature storage chamber, and the portion can be prevented from becoming short of cold air supply, and the low-temperature storage chamber can be uniformly cooled. Moreover, even if the surroundings of the lighting device is a cold air duct through which cold air flows, the cold air flowing in the cold air duct is insulated by the heat insulation zone around the recess provided with the lighting device, so that the lighting device is overcooled and illuminated. Condensation does not occur in the apparatus, and it is possible to realize the uniform cooling of the low-temperature storage chamber and not to worry about failure due to condensation. And the said illuminating device can be provided in the horizontal direction on the lower surface of a shelf board member, and can also improve the visibility of the back of a low-temperature storage chamber.

  The present invention is a highly reliable refrigerator that can uniformly cool the low temperature storage chamber while improving the visibility in the low temperature storage chamber, and that does not cause a failure or the like due to dew condensation due to overcooling of the lighting device. It can be.

Front view of the refrigerator in Embodiment 1 of the present invention Front view when opening the refrigerator door in the first embodiment Vertical sectional view of the refrigerator in the first embodiment The expansion perspective view of the low-temperature storage room provided in the refrigerator compartment lower part of the refrigerator in Embodiment 1 The expanded sectional view of the low-temperature storage room of the refrigerator in Embodiment 1 The top view of the state which removed the upper heat insulating material of the shelf member which comprises the low-temperature storage room of the refrigerator in Embodiment 1 AA sectional view of FIG. 6 showing the refrigerator in the first embodiment. BB sectional view of FIG. 6 showing the refrigerator in the first embodiment Explanatory drawing which shows the lighting state in the low-temperature storage room of the refrigerator in Embodiment 1 Explanatory drawing which shows the illumination state when the low-temperature storage chamber container of the refrigerator in Embodiment 1 is pulled out The perspective view which looked at the shelf board member which comprises the low-temperature storage room of the refrigerator in Embodiment 1 from upper direction The perspective view which looked at the shelf member which comprises the low-temperature storage room of the refrigerator in Embodiment 1 from the downward direction The disassembled perspective view of the shelf board member which comprises the low-temperature storage room of the refrigerator in Embodiment 1 Schematic cross-sectional view showing the cold storage room part of a conventional refrigerator Expanded cross-sectional view showing the configuration of the conventional low-temperature storage room

  1st invention is equipped with the refrigerator main body, the refrigerator compartment provided in the refrigerator main body, and the low-temperature storage room partitioned and formed by the shelf member in the lower part of the said refrigerator compartment, The shelf board member used as the ceiling of the said low-temperature storage chamber Is composed of a heat insulating material that insulates the low temperature storage chamber from the refrigerator compartment, and an upper plate and a lower plate that cover the heat insulating material, and a concave portion is formed on the lower surface of the shelf plate member toward the heat insulating material, A lighting device is provided in the concave portion, and a cold air duct portion is formed on the outer peripheral portion of the concave portion of the heat insulating member, leaving a heat insulating zone, and a cold air duct is provided in front of the lighting device to supply cold air into the low temperature storage chamber. Possible configurations.

Thereby, cold air can be supplied also to the front part of the low-temperature storage chamber, and the portion can be prevented from becoming short of cold air supply, and the low-temperature storage chamber can be uniformly cooled. Moreover, even if the surroundings of the lighting device is a cold air duct through which cold air flows, the cold air flowing in the cold air duct is insulated by the heat insulation zone around the recess provided with the lighting device, so that the lighting device is overcooled and illuminated. Condensation does not occur in the apparatus, and it is possible to realize the uniform cooling of the low-temperature storage chamber and not to worry about failure due to condensation. And the said illuminating device can be provided in the horizontal direction on the lower surface of a shelf board member, and can also improve the visibility of the back of a low-temperature storage chamber.

  According to a second invention, in the first invention, the shelf board member has a cold air inlet at a rear end portion, and the heat insulating zone around the concave portion of the portion facing the cold air inlet is for heat insulation of other portions. The adiabatic bandwidth is wider than the band.

  As a result, it is possible to strongly insulate the part that is cooled strongly by the direct impact of the cold air from the cold air inlet, and it is possible to prevent over-cooling of the lighting device and prevent condensation from occurring in the lighting device. The reliability such as failure can be more reliably eliminated and the reliability can be further improved.

  According to a third invention, in the first or second invention, the lighting device has a configuration in which a lower portion of the light source body is covered with a transparent cover.

  This prevents intrusion of outside air into the light source body part when the door of the refrigerator compartment is opened and closed to prevent damage due to condensation, while ensuring a creepage distance to the light source body, It is possible to prevent static electricity from flowing from the hand or the like to the light source body part when it is taken in and out, and to damage it, and to provide a highly reliable refrigerator with a low-temperature storage room.

  According to a fourth invention, in the first to third inventions, the illuminating device is provided in a portion closer to the front than the center in the front-rear depth direction of the low-temperature storage chamber.

  Thereby, even if it is a low-temperature storage room where the depth dimension of the front-back direction is short, the dimension of the cold air duct from a cold air inlet to an illuminating device can be ensured. As a result, it is possible to suppress an increase in the resistance to inflow of cold air into the cold air duct, and it is possible to more reliably cool the low temperature storage chamber by providing a good supply of cold air to the low temperature storage chamber.

  5th invention is 1st-4th invention, The heat insulating material of the said shelf board member superposes | polymerizes an upper heat insulating material and a lower heat insulating material, and is comprised between an upper heat insulating material and a lower heat insulating material. The structure is such that a cold air duct is formed.

  Thereby, the cold air duct part can be easily formed by combining the heat insulating member in which the concave part for the cold air passage is formed, and at the same time the productivity is improved as compared with the case where the cold air duct part is formed by hollowing out one heat insulating member, The degree of freedom of the shape of the cold air duct portion is also improved, and the entire low temperature chamber can be efficiently cooled.

  According to a sixth invention, in the fifth invention, a wiring groove is further provided between the upper heat insulating material and the lower heat insulating material of the shelf board member, and a power source on the refrigerator main body side is passed through the lead wire from the lighting device to the wiring groove. The configuration is connected to a lead wire.

  Thereby, the lead wire of an illuminating device can be connected to the power supply lead wire from a refrigerator main body using the heat insulating material of a shelf board member, and rationalization of a structure can be aimed at. In addition, since the wiring groove is formed between the upper and lower heat insulating members, the degree of freedom of the wiring groove shape is improved as in the case of the cold air duct. Therefore, the wiring groove can be formed at a position where it is difficult to be affected by the cold air flowing through the cold air duct portion to prevent dew condensation from adhering to the wiring, and the reliability can be improved.

  According to a seventh invention, in the fifth or sixth invention, the concave portion of the shelf board member is formed on a lower plate that covers the lower surface of the lower heat insulating material, and the light source body substrate and the transparent cover of the lighting device are mounted in the concave portion. Are integrated into a unit.

  As a result, by assembling the shelf members by incorporating the upper and lower heat insulating materials between the upper plate and the lower plate, the assembly of the lighting device is completed at the same time, thereby improving productivity and transporting in the assembly process. The number of parts can be reduced and the light source body and the like can be easily handled.

  According to an eighth invention, in the first to seventh inventions, the low-temperature storage chamber is provided with a container that can be pulled out, and the lighting device provided on the shelf member of the low-temperature storage chamber is from the rear end of the upper surface opening of the container drawn out. Is also configured to be located on the front side.

  Thereby, the illumination device can always irradiate the inside of the container even when the container is pulled out, and the visibility of the food stored in the container can be improved.

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

(Embodiment 1)
FIGS. 1-13 shows Embodiment 1 of this invention, First, the structure of the whole refrigerator is demonstrated.

  1 to 3, the refrigerator according to the present embodiment includes a refrigerator main body 1 having an opening at the front, and the refrigerator main body 1 includes an outer box 2 mainly using a steel plate and an ABS as shown in FIG. 3. The inner box 3 is molded with a hard resin such as the above, and the foam heat insulating material 4 such as hard foam urethane filled between the outer box 2 and the inner box 3.

  The refrigerator main body 1 is divided into a plurality of storage rooms by partition plates 5, 6, 6a. The uppermost part of the refrigerator main body 1 is provided in the refrigerating room 7, and the lower part of the refrigerating room 7 is provided in parallel to the switching room 8a and the switching room 8a. The ice making room 8b, the lower part thereof is a freezing room 9, and the lowermost part is a vegetable room 10. And the front opening part of each said store room is obstruct | occluded so that opening and closing is possible by door 11a, 11b, 11c, 11d, 11e.

  A machine room 14 is provided in the upper rear region of the refrigerator body 1. The machine room 14 accommodates high-pressure components of the refrigeration cycle such as the compressor 15 and a dryer (not shown) for removing moisture.

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

  A cooler 19 is disposed in the cooling chamber 16, and a cooling fan 20 is disposed above the cooler 19. The cooling fan 20 cools each room by forcibly circulating the cold air cooled by the cooler 19 to the refrigerating room 7, the freezing room 9, the vegetable room 10, etc. via the cold air passage 17.

  For example, the refrigerated room 7 is cooled to a temperature that does not freeze the food, usually 1 ° C. to 5 ° C., and the vegetable room 10 is cooled to a temperature 2 ° C. to 7 ° C. that is equal to or slightly higher than the refrigerated room 7. Further, the freezer compartment 9 is usually cooled to a freezing temperature range of −22 ° C. to −15 ° C. for frozen storage, and in some cases, for example, a low temperature of −30 ° C. or −25 ° C. to improve the frozen storage state. Sometimes it cools down.

  The refrigerating room 7 cooled by the cold air from the cooling room 16 is provided with a plurality of shelves 21 on which food is placed, and an illuminating device (not shown) is provided in front of the side wall. When the door 11a is opened, the light is turned on and the inside of the refrigerator compartment 7 is irradiated.

  Further, the cold storage room 7 has a low temperature storage room 23 which can be switched to a chilled room cooled to a temperature zone of about 1 ° C. or a partial room cooled to a slight freezing temperature zone of about −3 ° C. It is. The low temperature storage room 23 is not switchable to a chilled room or a partial room, but may be designed exclusively for a chilled room or a partial room.

  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 partitioned and formed with a shelf plate member 24 that is also used as a shelf plate located at the lowest stage of the refrigerator compartment 7 and a partition plate 22a that partitions the water supply tank chamber 22 on the side surface. There is a container 25 that can be pulled out inside, and the front of the container 25 is closed by a lid plate 26 that pivots around the front end of the shelf plate member 24 when the container 25 is pulled out.

  As shown in FIGS. 5 and 13, 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 synthetic resin lower frame plate serving as a lower plate. 29 and a heat insulating material 30 such as a polystyrene foam provided between them.

  And the said heat insulating material 30 is formed with the cold air duct part 32 which has many outlets 31 opened to the lower frame board 29, and the said cold air duct part 32 is made into the refrigerator main body 1 by setting in the refrigerator compartment 7. Cold air is communicated with the cold air passage 17 on the back, and the inside of the low temperature storage chamber 23 is cooled by this cold air.

  Further, as shown in FIG. 7, the heat insulating material 30 of the shelf board 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. The cold air duct portion 32 is formed by a recess formed in one or both of the 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 plate member 24, and the rear portion thereof is connected to the cold air passage 17 of the refrigerator main body 1 as shown in FIG. A cold air inlet 33 to be connected is provided.

  Further, as shown in FIG. 7, the lower surface of the shelf plate member 24, that is, the lower frame plate 29 is formed with a concave portion 34 that is recessed toward the heat insulating material 30 side. A lighting device 35 is provided in the through hole 30c formed in 30b.

  The concave portion 34 is formed in a portion closer to the front than the center of the shelf plate member 24 in the front-rear depth direction so that the illumination device 35 is located in a portion closer to the front of the low-temperature storage chamber 23. In this embodiment, the concave portion 34, that is, the lighting device 35 is further located on the front side than the rearmost end of the upper surface opening of the container 25 drawn from the low temperature storage chamber 23 as shown in FIG. 10.

  Moreover, the outer peripheral part of the recessed part 34 of the heat insulating material 30 which accommodated the said illuminating device 35 is made to become the said cold air duct part 32, leaving the zone 36 for heat insulation, as shown in FIG. 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 from the outlet 31 to the front portion of the low temperature storage chamber 23.

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

On the other hand, as shown in FIGS. 7 and 8, the illuminating device 35 provided in the concave portion 34 covers a substrate 37, a light source body 38 made of LEDs and the like provided on the substrate 37, and a lower portion of the light source body 38. A transparent cover 39 is used. The lighting device 35 fits the substrate 37 inside 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 is attached to the holding piece 40. The lower frame plate 29 is unitized by being fitted to the outside and engaged and fitted in the recess 34.

  Further, the upper heat insulating material 30a and the lower heat insulating material 30b constituting the heat insulating material 30 of the shelf board member 24 are provided with a wiring groove 41 formed by a recess method similar to the cold air duct portion 32 as shown in FIG. The lead wire 42 of the lighting device 35 is connected to a power supply lead wire (not shown) on the refrigerator main body 1 side through the wiring groove 41 through the opening 43 in the rear end portion of the shelf board member 24.

  In the present embodiment, as shown in FIG. 6, the wiring groove 41 is formed forwardly from one end portion of the concave portion 34 so as to avoid the outlet 31 of the cold air duct portion 32, and is bent in the lateral direction as it is. Further, it is bent backward along the side surface of the shelf plate member 24.

  The opening 43 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. 9 and 10, the low-temperature storage chamber 23 detects the insertion and removal of the container 25 with a container detection switch 45, detects the temperature with a temperature sensor 46, and controls the supply of cold air to a predetermined temperature. It is designed to cool down.

  About the refrigerator comprised as mentioned above, the effect is demonstrated next.

  First, when the door 11a of the refrigerator compartment 7 is opened, the refrigerator turns on the illumination device 35 of the cold storage chamber 23 together with the illumination device (not shown) in the refrigerator compartment, and irradiates the interior of the cold storage chamber 23. Irradiation by the illumination device 35 can be installed in a substantially horizontal state because the illumination device 35 is provided on the lower surface of the shelf plate member 24. As a result, as shown in FIG. Irradiates up to the rear end of the container 25. Therefore, it is possible to brighten the inner part of the low-temperature storage chamber 23, and the food stored in the low-temperature storage chamber 23 can be clearly seen.

  Further, in this embodiment, the illumination device 35 is provided so as to be positioned on the front side of the rear end of the upper surface opening of the container 25 drawn out from the low-temperature storage chamber 23. Therefore, even when the container 25 is drawn out, FIG. As shown, the inside of the container 25 can be irradiated, and the visibility of the food when the container 25 is pulled out can be improved.

  On the other hand, the cold storage chamber 23 is supplied with cold air from the refrigerator main body 1 side via the cold air duct portion 32 and the outlet 31 provided in the shelf member 24, and the cold air duct portion 32 is the shelf member. 24 is provided so as to surround the illuminating device 35 provided at 24, so that it also enters the front portion of the illuminating device 35 and blows out into the low temperature storage chamber 23 from the outlet 31. Therefore, the cool air can be reliably supplied to the front portion of the low temperature storage chamber 23, and the inside of the low temperature storage chamber 23 can be uniformly cooled by preventing the portion from becoming a cold supply shortage.

  The low-temperature storage chamber 23 has a shape in which cold air flows through the cold air duct portion 32 around the lighting device 35 so that the lighting device 35 is cooled. The cold air flowing through the cold air duct portion 32 is illuminated. Since the heat insulation zone 36 around the recess 34 provided with the device 35 is insulated, it is possible to prevent the lighting device 35 from being overcooled. Therefore, condensation does not occur in the illuminating device 35, and concerns such as a short circuit failure due to condensation generation and adhesion can be eliminated and the lighting device 35 can be made highly reliable.

In particular, in this embodiment, the heat insulating zone 3 around the recess 34 in which the lighting device 35 is accommodated.
6, as shown in FIG. 6, the heat insulation bandwidth of the portion facing the cold air inlet 33 at the rear end of the shelf plate member 24 is formed wider than the heat insulation bandwidth of the other portions, and thus more reliable. Can be high.

  That is, the portion of the recess 34 that faces the cold air inlet 33 is strongly cooled by the direct collision of the cold air from the cold air inlet 33, and condensation is likely to occur. However, in this embodiment, since the width of the heat insulation zone 36 in the portion facing the cold air inlet 33 is particularly wide, strong cooling due to the direct collision of the cold air from the cold air inlet 33 can be strongly insulated. Therefore, it is possible to reliably prevent overcooling of the portion of the lighting device 35 facing the cold air inlet 33 to prevent condensation from occurring in the lighting device 35 and to more reliably prevent a short circuit failure due to condensation. Reliability.

  Moreover, since the said illuminating device 35 is provided in the front side part from the center of the front-back depth direction of the low-temperature storage chamber 23, even if it is a low-temperature storage chamber with the short depth dimension in the front-back direction, from the cold air inlet 33 to the illuminating device 35 The size of the cold air duct portion 32 can be secured at a predetermined level 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, and to improve the supply of the cold air into the low temperature storage chamber 23, the low temperature storage chamber 23 has a low partial temperature of −3 ° C. Even if it is a room, it can be reliably and quickly cooled to that temperature.

  Further, since the illumination device 35 covers the lower portion of the light source body 38 with the transparent cover 39, it is possible to prevent the outside air that tends to occur when the door 11a of the refrigerator compartment 7 is opened and closed from entering the light source body 38 portion. Also, condensation due to intrusion of outside air can be prevented. In addition, by providing the transparent cover 39, a creeping distance to the light source body 38 can be secured, and static electricity flows from the hand etc. to the light source body 38 and the substrate 37 portion when the food is taken in and out of the low temperature storage chamber 23, which is damaged. Can also be prevented. Therefore, the reliability is further increased.

  On the other hand, since the shelf member 24 is formed by polymerizing the upper heat insulating material 30a and the lower heat insulating material 30b to form the cold air duct portion 32 therebetween, the cold air duct portion 32 can be easily formed and has high productivity. can do. That is, the upper and lower heat insulating members 30a and 30b in which the cold air passage recesses are formed are combined (the cold air passage recess may be provided in only one of the upper and lower heat insulating members 30a and 30b). As a result, the cold air duct portion 32 can be formed, and the productivity is greatly improved as compared with the case where the cold air duct portion is formed by hollowing out one heat insulating member. In addition, since the cold air passage recesses need only be formed on the overlapping surfaces of the upper and lower heat insulating members 30a and 30b, they can be formed in any shape, and the degree of freedom in the shape of the cold air passage is improved. The whole can be cooled efficiently.

  In addition, since the wiring groove 41 through which the lead wire 42 of the lighting device 35 passes is also formed by the concave portion method similar to the cold air duct portion 32, the degree of freedom of the wiring groove shape is improved as in the case of the cold air duct portion 32. . Therefore, the wiring groove 41 can be formed at a position that is not easily affected by the cold air flowing through the cold air duct portion 32, so that the condensation of the wiring itself can be prevented and the reliability can be improved. In addition, it is not necessary to prepare a lead wire mounting member separately and attach it to the shelf plate member 24 to make 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 a substrate 37 and a transparent cover 39 in a recess 34 provided in the lower frame plate 29 of the shelf plate member 24, the lighting device 35 is interposed between the upper plate 28 and the lower frame plate 29. Assembling the lighting device 35 is completed at the same time as assembling the shelf member 24 by incorporating the upper and lower heat insulating materials 30a and 30b. Therefore, productivity is improved, the number of parts to be conveyed in the assembly process can be reduced, and handling of the light source body 38 and the like is facilitated.

  In particular, as shown in this embodiment, if the concave portion for the cold air duct portion 32 and the concave portion for the wiring groove 41 are provided on the side of the lower heat insulating material 30b provided with the through hole 30c, the shelf plate member 24 can be easily assembled. As a result, productivity can be further improved.

  More specifically, first, the lighting device 35 is unitized by sequentially fitting and mounting the substrate 37 and the transparent cover 39 in the recess 34 of the lower frame plate 29 of the shelf plate member 24. Next, the lower frame plate 29 in which the lighting device 35 is unitized is turned over, and the lower heat insulating material 30 b is fitted into the lower frame plate 29. In this state, as shown in FIG. 8, the lead wire 42 from the substrate 37 is pulled out from the hole portion Y of the recess 34 into which the substrate 37 is fitted, and is routed to the wiring groove recess formed in the lower heat insulating material 30b. When the upper heat insulating material 30a is overlapped from above and the upper plate 28 integrated with the shelf frame member 27 is set, the assembly is completed. That is, the lighting device 35 can be assembled and the lead wire 42 can be wired only on the side of the lower heat insulating material 30b fitted and mounted on the lower frame plate 29. For example, the lighting device 35 is mounted on the lower heat insulating material 30b side, and the lead wire 42 is Compared to the case of mounting on the upper heat insulating material 30a side, the assemblability is remarkably improved and the productivity is improved.

  Although the low temperature storage chamber 23 exemplified in this embodiment is not shown, 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 mentioned above, although the refrigerator which concerns on this invention has been demonstrated using the said embodiment, this invention is not limited to this, A various change is possible within the range which achieves the objective of this invention. Needless to say. Therefore, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  The present invention provides a highly reliable refrigerator that can cool the cold storage room uniformly while improving the visibility of the cold storage room, and that the lighting device is overcooled and does not cause failure due to condensation. it can. Therefore, it can be widely applied to many uses such as commercial refrigerators and showcases as well as home use.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 7 Refrigeration room 14 Machine room 15 Compressor 16 Cooling room 17 Cooling air passage 18 Back wall body 19 Cooler 20 Cooling fan 21 Shelf board 22 Water supply tank room 23 Low-temperature storage room 24 Shelf board member 25 Container 26 Cover board 27 Shelf Frame member 28 Upper plate 29 Lower frame plate (lower plate)
DESCRIPTION OF SYMBOLS 30 Heat insulating material 31 Outlet 32 Cold air duct part 33 Cold air inlet 34 Recessed part 35 Illumination device 36 Insulation zone 37 Substrate 38 Light source body 39 Transparent cover 40 Holding piece 41 Wiring groove 42 Lead wire

Claims (8)

A refrigerator body, a refrigerator compartment provided in the refrigerator body, and a low-temperature storage compartment defined by a shelf member at a lower portion of the refrigerator compartment, and the shelf member serving as a ceiling of the low-temperature storage compartment refrigerates the cold storage compartment A heat insulating material that insulates from the chamber, and an upper plate and a lower plate that cover the heat insulating material, and a concave portion is formed on the lower surface of the shelf plate member toward the heat insulating material, and a lighting device is provided in the concave portion. In addition, a cold air duct portion is formed by leaving a heat insulation zone in the outer peripheral portion of the concave portion of the heat insulating member, and a cold air duct portion is provided in front of the lighting device so that cold air can be supplied into the low temperature storage chamber. refrigerator. The shelf member has a cold air inlet at a rear end portion, and the heat insulating zone around the concave portion of the portion facing the cold air inlet is formed wider than the heat insulating zone of the other portion. The refrigerator described. The refrigerator according to claim 1 or 2, wherein the lighting device has a lower portion of the light source body covered with a transparent cover. The refrigerator according to any one of claims 1 to 3, wherein the lighting device is provided in a portion closer to the front than the center in the front-rear depth direction of the low-temperature storage room. The heat insulating material of the shelf member is formed by polymerizing an upper heat insulating material and a lower heat insulating material, and a cold air duct is formed between the upper heat insulating material and the lower heat insulating material. Refrigerator. The refrigerator according to claim 5, wherein a wiring groove is further provided between the upper heat insulating material and the lower heat insulating material of the shelf board member, and the wiring groove is connected to a power supply lead wire on the refrigerator body side through a lead wire from the lighting device. The refrigerator according to claim 5 or 6, wherein the concave portion of the shelf member is formed in a lower plate that covers the lower surface of the lower heat insulating material, and the light source body substrate and the transparent cover of the lighting device are attached to the concave portion to form a unit. The cold storage room includes a container that can be pulled out, and the lighting device provided on the shelf plate member of the cold storage room is configured to be positioned in front of the rearmost end of the upper surface opening of the container. The refrigerator of Claim 1.