WO2020196467A1

WO2020196467A1 - Refrigerator

Info

Publication number: WO2020196467A1
Application number: PCT/JP2020/012865
Authority: WO
Inventors: 裕哉鈴木; 康成大和
Original assignee: 三菱電機株式会社
Priority date: 2019-03-28
Filing date: 2020-03-24
Publication date: 2020-10-01
Also published as: JPWO2020196467A1; TWI786386B; WO2020194682A1; TW202035934A; JP7138774B2

Abstract

This refrigerator comprises: a storage room that has an opening on the front side and stores a food inside; a storage room door that is provided on the front side so as to be openeable and closable; a door pocket that is provided on the storage-room-side face of the storage room door and houses a food; and a lighting device that is provided on the ceiling surface in the storage room so as to project downward and illuminates the interior of the storage room with light from a light emitting source. The lighting device is disposed at a position that overlaps the door pocket in the front-back direction of the ceiling surface but does not overlap the opening/closing locus of the door pocket in the left-right direction of the ceiling surface.

Description

refrigerator

The present invention relates to a refrigerator provided with a lighting device that illuminates the inside of the refrigerator.

Conventionally, the refrigerator is equipped with a lighting device to illuminate the inside of the refrigerator brightly. When the door switch attached to the refrigerator reacts by opening the hinged door of the refrigerator, the electric signal switched by the door switch is supplied to the control board that controls the refrigerator. Then, the lighting device is turned on by transmitting a command to turn on the lighting from the control board to the lighting device. In such a lighting device, an LED (Light Emitting Diode) is mainly used as a light emitting source.

In such a refrigerator, various arrangement locations and arrangement methods have been proposed for the arrangement location and arrangement method of the lighting device. For example, Patent Document 1 discloses a refrigerator in which a lighting device is provided in a recess of the ceiling wall surface provided in front of a storage shelf in the refrigerator and irradiates light toward the storage shelf and the back wall surface in the refrigerator. ing.

Further, Patent Document 2 discloses a refrigerator in which a lighting device is provided in a recess provided on the side wall surface in front of the storage shelf in the refrigerator and irradiates light toward the storage shelf and the back wall surface in the refrigerator. ing. Further, in Patent Document 3, a lighting device is provided on an inclined portion that protrudes forward from the storage shelf in the refrigerator on the ceiling wall surface and the side wall surface and extends in the left-right direction in the front view, and the storage shelf and the refrigerator are provided. A refrigerator that irradiates light toward the back wall surface is disclosed.

Japanese Unexamined Patent Publication No. 2008-0393555 Japanese Patent No. 40555803 Japanese Unexamined Patent Publication No. 2012-220134

However, when the lighting device is arranged in the recess provided on the wall surface of the refrigerator as in the refrigerators described in

Patent Documents

1 and 2, the heat insulating member such as urethane and vacuum heat insulating material provided in the refrigerator housing is used. Since it is necessary to reduce the amount by the amount of the lighting device, the heat insulating performance deteriorates.

Further, the door of the refrigerator is provided with a door pocket for storing food, but when the lighting device is extended to the ceiling wall surface or the like as in the refrigerator described in Patent Document 3, the visibility inside the refrigerator is improved. Although it can be improved, there is a risk that the door pocket and the food stored in the door pocket come into contact with the lighting device. Therefore, the size of food stored in the door pocket is limited. In this case, it is conceivable to change the specifications such as the size and arrangement position of the door pocket so that the food stored in the door pocket is not restricted. However, it is very difficult to change the specifications of the door pocket because the door pocket can store food of a predetermined size based on the request from the user.

That is, in the refrigerator described in Patent Document 3, deterioration of heat insulation performance can be suppressed and visibility inside the refrigerator can be improved, but foods stored in the door pocket are limited.

The present invention has been made in view of the above-mentioned problems in the prior art, and provides a refrigerator capable of suppressing a decrease in heat insulating performance, a restriction on foods to be stored, and a decrease in a storage amount. The purpose is.

The refrigerator of the present invention is provided on a storage chamber having an open front surface for storing food inside, a storage chamber door movably provided on the front surface, and a surface of the storage chamber door on the storage chamber side. A door pocket for storing the food and a lighting device provided so as to project downward from the ceiling surface of the storage room and irradiate the storage room with light from a light emitting source. The lighting device is provided with the ceiling surface. It is a position that overlaps with the door pocket in the front-rear direction of the above, and is arranged at a position that does not overlap with the opening / closing locus of the door pocket in the left-right direction of the ceiling surface.

As described above, according to the present invention, the lighting device is provided so as to project downward from the ceiling surface of the storage room, and is positioned so as to overlap the door pocket in the front-rear direction and not to overlap the opening / closing locus of the door pocket in the left-right direction. Placed in. As a result, the lighting device is placed in the door pocket and in a position where it does not come into contact with the food stored in the door pocket even when the storage room door is opened and closed. It is possible to suppress a decrease in the storage amount.

It is an external view which shows an example of the refrigerator which concerns on Embodiment 1. FIG. It is an internal structure diagram of the refrigerator when the line segment AA shown in FIG. 1 is seen from the direction of an arrow. It is a functional block diagram which shows an example of the structure of the control board of FIG. It is the schematic which shows an example of the relationship between the lighting apparatus which concerns on Embodiment 1 and the ceiling wall surface of a refrigerating room. It is the schematic which shows the other example of the relationship between the lighting apparatus which concerns on Embodiment 1 and the ceiling wall surface of a refrigerating room. It is the schematic which shows the 1st comparative example of the relationship between a lighting device and the ceiling wall surface of a refrigerator-proof room. It is the schematic which shows the 2nd comparative example of the relationship between a lighting device and the ceiling wall surface of a refrigerator-proof room. It is a schematic diagram for demonstrating the irradiation of light by a lighting device when the lighting device is provided in the upper part of the storage shelf. It is a schematic diagram for demonstrating the irradiation of light by a lighting device when the lighting device is provided on the front side side from the storage shelf. It is an internal structure view of the refrigerating chamber of FIG. 2 when viewed from the top surface when the lighting device is provided at a position where it overlaps with the door pocket when viewed from the top surface. It is an internal structural drawing of the refrigerating chamber of FIG. 2 when viewed from the upper surface when the lighting device is provided at a position which does not overlap with the door pocket when viewed from the upper surface. It is the schematic for demonstrating the inclination angle about the x-axis of the optical axis of LED in a lighting apparatus. It is the schematic for demonstrating the inclination angle around the z-axis of the optical axis of LED in a lighting apparatus. It is the schematic for demonstrating the inclination angle around the y-axis of the optical axis of LED in a lighting apparatus. It is an internal structural drawing of the refrigerating room when the refrigerator which concerns on Embodiment 2 is seen from the side surface side. It is the schematic which shows an example of the lighting apparatus and a guide pin of FIG. FIG. 5 is a schematic diagram showing another example of the lighting device and the guide pin of FIG. It is the schematic which shows the other example of the guide pin of FIG. It is the schematic which shows the other example of the guide pin of FIG. It is an internal structural drawing when the refrigerating room provided with a single door is seen from the upper surface. It is an internal structural drawing when the other example of the refrigerating room provided with a single door is seen from the upper surface. It is an internal structural drawing when another example of the refrigerating room provided with a single door is seen from the upper surface. It is an internal structural drawing which shows an example when the refrigerating room is seen from the upper surface. It is the schematic which shows the 1st example for demonstrating the arrangement relation of the lighting apparatus of FIG. 23, and a storage shelf. It is the schematic which shows the 2nd example for demonstrating the arrangement relation of the lighting device and a storage shelf of FIG. It is the schematic which shows the 3rd example for demonstrating the arrangement relation of the lighting device and a storage shelf of FIG. It is the schematic which shows an example of a lighting device. It is the schematic for demonstrating the brightness of a lighting apparatus. It is a graph which shows an example of the relationship between the duty ratio of a lighting control signal and illuminance. It is a graph which shows an example of the lighting control signal when the duty ratio is 50%. It is a graph which shows an example of the lighting control signal when the duty ratio is 75%.

Hereinafter, the present embodiment will be described. In the drawings used in the following description, the size relationship of each component may differ from the actual one. In addition, the forms of the components shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1.
The refrigerator according to the first embodiment will be described. The refrigerator according to the first embodiment is provided with a lighting device capable of illuminating the inside of the refrigerator.

[Structure of refrigerator 100]
FIG. 1 is an external view showing an example of the refrigerator 100 according to the first embodiment. In the following description, the right side and the left side indicate the direction when the direction from the front side to the back side (front-back direction) of the refrigerator 100 is the front side. That is, the right side corresponds to the right side of the paper surface of FIG. 1, and the left side corresponds to the left side of the paper surface of FIG. Further, in the following, the direction from the left side to the right side (left-right direction) is the x direction, the direction from the front side to the back side (front-back direction) is the y direction, and the direction from the upper surface side to the lower surface side (vertical direction). This will be described as the z direction.

As shown in FIG. 1, the refrigerator 100 includes a housing 100A that constitutes an outer shell. The housing 100A includes an outer box (not shown) having an opening on the front surface, and an inner box (not shown) in which each storage chamber is partitioned by a partition wall and fitted into the outer box through the opening of the outer box. It is a box body having heat insulating properties, which is composed of a heat insulating member 210 (see FIGS. 4 to 7) such as urethane 212 or vacuum heat insulating material 211 filled in the space between the outer box and the inner box. The refrigerator 100 includes a refrigerating chamber 1, an ice making chamber 2 and a switching chamber 3, a vegetable compartment 4 and a freezing chamber 5 provided in the left-right direction of the housing 100A in this order from the top. ..

Each storage room of the refrigerator room 1, the ice making room 2, the switching room 3, the vegetable room 4, and the freezing room 5 is provided with a storage room door on the front side of the refrigerator 100. A double door 1A that opens and closes in a rotational direction about a hinge (not shown) is provided on the opening surface of the refrigerator compartment 1. The double door 1A is formed of, for example, a pair of doors having different widths on the left and right sides. The ice making chamber 2 is provided with a pull-out door 2A that can be opened and closed in the front-rear direction. Similarly, the switching room 3 is provided with a pull-out door 3A, the vegetable room 4 is provided with a pull-out door 4A, and the freezing room 5 is provided with a pull-out door 5A.

These pull-out doors 2A to 5A slide a frame (not shown) fixed to the pull-out doors 2A to 5A with respect to rails (not shown) formed horizontally on the left and right inner wall surfaces of each storage chamber. It is designed to let you. As a result, the pull-out doors 2A to 5A can be opened and closed in the depth direction of the refrigerator 100, that is, in the front-rear direction (y direction).

On the outer surface of the double door 1A, an operation panel 101, which is an operation unit for setting the cold storage temperature and quenching of the storage chamber, is provided. The operation panel 101 is not limited to this example, and may be arranged on the inner wall surface of the refrigerator compartment 1, for example.

The refrigerator 100 is not limited to the above-described configuration. For example, the refrigerator 100 may be configured without the ice making chamber 2 and the switching chamber 3. Further, the refrigerator 100 may be configured with the positions of the vegetable compartment 4 and the freezing chamber 5 reversed.

FIG. 2 is an internal structural diagram of the refrigerator 100 when the line segments AA shown in FIG. 1 are viewed from the direction of the arrow. As shown in FIG. 2, each storage room of the refrigerating room 1, the ice making room 2, the switching room 3, the vegetable room 4 and the freezing room 5 has a heat insulating partition wall that blocks heat transfer from the adjacent storage room. It is partitioned by 6.

In the vegetable compartment 4, a storage case 401 that can store the object to be cooled is stored in a drawer-free manner. The storage case 401 is supported by the frame of the pull-out door 4A, and slides in the front-rear direction in conjunction with the opening and closing of the pull-out door 4A. Similarly, in the switching chamber 3 and the freezing chamber 5, a storage case 301 and a storage case 501 that can store the object to be cooled are stored in a drawer-free manner, respectively. Further, in the ice making chamber 2, a storage case 201 that can store the ice made ice inside is freely retractable. The number of storage cases provided in each storage room may be one, but may be two or more if the capacity of the entire refrigerator 100 is taken into consideration and the organization is improved. ..

The refrigerating room 1 is provided with one or a plurality of storage shelves 1a for storing the food 10 in the vertical direction (z direction). The storage shelf 1a is made of, for example, a transparent member. Further, the double door 1A is provided with one or a plurality of door pockets 1b for storing the food 10. The door pocket 1b is provided on the inner surface of the double door 1A so that food 10 having a predetermined height can be stored.

The size of the storage shelf 1a is formed as wide as possible without contacting the door pocket 1b in order to increase the food storage capacity as much as possible. Therefore, there is almost no space between the door pocket 1b and the storage shelf 1a.

Further, inside the refrigerating room 1, a lighting device 7 for irradiating the inside of the refrigerating room 1 with light is provided. The lighting device 7 has, for example, at least one LED as a light emitting source and a cover covering the LED. The LED is mounted on a substrate, for example. A connector is attached to this board, and a lead wire 130 connected to the control board 120 is generally attached. Further, the back surface of the lighting device 7 may be covered with a seal member, for example, in order to prevent the intrusion of moisture. The cover that covers the LED is often textured or formed in a shape that diffuses light in order to reduce the glare of the emitted LED.

In the first embodiment, the lighting device 7 is provided so as to project downward (z direction) on the front side of the storage shelf 1a and on the ceiling wall surface of the refrigerating room 1.

Further, the refrigerator 100 is provided with a plurality of door open / close detection switches 102. The plurality of door open / close detection switches 102 are provided corresponding to each of the double doors 1A and the pull-out doors 2A to 5A, detect the open / close of each door, and output the open / closed state. When limiting the room for detecting the opening / closing of the door, the door opening / closing detection switch 102 may be provided only in the room for detecting the opening / closing of the door.

On the back side of the refrigerator 100, a compressor 111, a cooler 112, a blower fan 113, an air passage 114, and a control board 120 are provided as cooling mechanisms for cooling each storage chamber. Further, although not shown, a condenser and a capillary tube as a decompression device are provided on the back side of the refrigerator 100. In the refrigerator 100, a compressor 111, a condenser, a capillary tube, and a cooler 112 are connected by pipes or the like, and a refrigerant circulates inside to form a refrigeration cycle device. By operating the refrigeration cycle device under the control of the control board 120, cold air supplied to each storage chamber is generated.

The compressor 111 compresses the refrigerant circulating in the refrigeration cycle device. The cooler 112 evaporates the refrigerant in the refrigeration cycle apparatus and cools the surrounding air by the endothermic action at the time of evaporation. The blower fan 113 is arranged in the vicinity of the cooler 112, and blows the cooling air cooled by the cooler 112 into each storage room of the refrigerator chamber 1, the ice making chamber 2, the switching chamber 3, the vegetable chamber 4, and the freezer chamber 5. To do. The air passage 114 is a path for supplying the cooling air cooled by the cooler 112 to each storage chamber by the blower fan 113.

The refrigerant compressed by the compressor 111 is condensed by the condenser. The condensed refrigerant is depressurized by the capillaries. The decompressed refrigerant evaporates in the cooler 112, and the air around the cooler 112 is cooled by the endothermic action at the time of evaporation, and cold air is generated.

The cold air around the cooler 112 generated by the cooler 112 is blown to the freezing chamber 5, the switching chamber 3, the ice making chamber 2 and the refrigerating chamber 1 after passing through the air passage 114 by the blower fan 113, and each storage chamber. To cool. The return cold air discharged from the refrigerating chamber 1 cools the vegetable compartment 4 by circulating a return air passage for the refrigerating chamber (not shown), and then is returned to the cooler 112 through the return air passage for the vegetable chamber (not shown). ..

The temperature of each storage room is detected by a thermistor (not shown) installed in each storage room. Then, the opening degree of a damper (not shown) installed in the air passage 114, the output of the compressor 111, and the amount of air blown by the blower fan 113 are controlled by the control board 120 so that the temperature of each storage chamber becomes a preset temperature. It is controlled by being adjusted.

The control board 120 controls the operation of the entire refrigerator 100. The control board 120 is composed of hardware such as a circuit device that realizes various functions by executing software on an arithmetic unit such as a microcomputer.

FIG. 3 is a functional block diagram showing an example of the configuration of the control board 120 of FIG. As shown in FIG. 3, signals are input to the control board 120 from the operation panel 101, the thermistor 116, and the door open / close detection switch 102. Further, the control board 120 outputs a signal to the compressor 111, the blower fan 113, the damper 115, and the lighting device 7. The control board 120 includes an acquisition unit 121, a calculation unit 122, a determination unit 123, a drive unit 124, and a storage unit 125.

The acquisition unit 121 acquires the operation signal corresponding to the operation content and the signal detected by the thermistor 116 and the door open / close detection switch 102 from the operation panel 101. The calculation unit 122 performs various calculation processes on each signal acquired by the acquisition unit 121. The determination unit 123 makes various determinations based on the calculation result of the calculation unit 122. Based on the determination result of the determination unit 123, the drive unit 124 outputs a drive signal to each unit so as to drive the compressor 111, the blower fan 113, the damper 115, and the lighting device 7. The storage unit 125 stores various types of information used in each unit of the control board 120.

[Arrangement of lighting device 7]
The arrangement of the lighting device 7 will be described with reference to FIGS. 4 to 11. Here, the arrangement of the lighting device 7 in the vertical direction (z direction) of the refrigerating chamber 1 will be described with reference to FIGS. 4 to 7, and the arrangement of the lighting device 7 in the front-rear direction (y direction) of the refrigerating room 1 will be described. This will be described with reference to FIGS. 8 to 11.

FIG. 4 is a schematic view showing an example of the relationship between the lighting device 7 and the ceiling wall surface of the refrigerating room 1 according to the first embodiment. As shown in FIG. 4, the lighting device 7 is attached to the ceiling wall surface of the refrigerator compartment 1 via the screw plate 220. At this time, the lighting device 7 is attached so as to be partially embedded in the ceiling wall surface in the vertical direction (z direction) of the refrigerating chamber 1. That is, the lighting device 7 is provided so that at least a part thereof protrudes downward from the ceiling wall surface in the vertical direction (z direction) of the refrigerating chamber 1.

As described above, a heat insulating member 210 is provided between the outer box constituting the housing 100A of the refrigerator 100 and the ceiling wall surface of the refrigerator compartment 1. The heat insulating member 210 is composed of, for example, one or both of the vacuum heat insulating material 211 and the urethane 212, and heats the refrigerator 100 by preventing heat from entering from the outside. In this example, the heat insulating member 210 uses the vacuum heat insulating material 211 on the upper side and urethane 212 on the lower side. In this case, the heat insulating member 210 is formed by pouring urethane 212 between the vacuum heat insulating material 211 and the inner box (gap), foaming the urethane 212, and filling the heat insulating member 210 without a gap.

FIG. 5 is a schematic view showing another example of the relationship between the lighting device 7 and the ceiling wall surface of the refrigerator compartment 1 according to the first embodiment. The example shown in FIG. 5 shows a case where the height in the vertical direction (z direction) embedded in the ceiling wall surface of the refrigerating chamber 1 in the lighting device 7 is lower than that in the example of FIG. In this case, the heat insulating member 210 is arranged so that the thickness of the vacuum heat insulating material 211, which has higher heat insulating performance than the urethane 212, is thicker than that in the example of FIG.

Here, as a comparative example of the lighting device 7 according to the first embodiment, a case where most of the lighting device 7 is arranged so as to be embedded in the ceiling wall surface of the refrigerating room 1 will be considered. FIG. 6 is a schematic view showing a first comparative example of the relationship between the lighting device 7 and the ceiling wall surface of the refrigerator compartment 1. The example shown in FIG. 6 shows a case where the lighting device 7 is attached to the ceiling wall surface so that most of the lighting device 7 is embedded in the ceiling wall surface of the refrigerator compartment 1.

Further, in the first comparative example, since most of the lighting device 7 is embedded in the ceiling wall surface, the thickness of the urethane 212 processed along the mounting shape of the lighting device 7 in the vertical direction (z direction) becomes thicker. , The thickness of the vacuum heat insulating material 211 is thin. Therefore, the heat insulating performance is deteriorated as compared with the example shown in FIG.

FIG. 7 is a schematic view showing a second comparative example of the relationship between the lighting device 7 and the ceiling wall surface of the refrigerator compartment 1. The example shown in FIG. 7 shows a case where the lighting device 7 is attached to the ceiling wall surface so that most of the lighting device 7 is embedded in the ceiling wall surface of the refrigerating chamber 1, similarly to the first comparative example shown in FIG. .. Further, in the second comparative example, the vacuum heat insulating material 211 is also processed according to the mounting shape of the lighting device 7.

In the second comparative example, since the vacuum heat insulating material 211 is processed, the thickness of the vacuum heat insulating material 211 in the vertical direction (z direction) can be made substantially the same as the example shown in FIG. Therefore, the deterioration of the heat insulating performance can be suppressed as in the example shown in FIG.

However, in the second comparative example, since the vacuum heat insulating material 211 is processed, the cost increases due to the addition of the processing cost, and the manufacturing time also increases due to the increase in the processing steps. Further, at the position where the lighting device 7 is attached, the vacuum heat insulating material 211 is processed along the mounting shape of the lighting device 7, so that the thickness of the vacuum heat insulating material 211 in the vertical direction (z direction) becomes thin. Therefore, the heat insulating performance deteriorates at the mounting position of the lighting device 7.

Further, in the example shown in FIG. 7, the urethane 212 does not flow properly in the vicinity of the mounting position of the lighting device 7 because the flow path is narrow, and there is a possibility that the urethane 212 cannot be sufficiently filled. In this case, the heat insulating performance deteriorates.

Therefore, in the first embodiment, the lighting device 7 is not arranged so as to be mostly embedded in the ceiling wall surface of the refrigerating room 1, but at least a part thereof is arranged so as to project downward from the ceiling wall surface. In this case, although the heat insulating member 210 at the mounting position of the lighting device 7 becomes thinner in the vertical direction (z direction) as shown in FIG. 4, it is not necessary to process the vacuum heat insulating material 211, so that the heat insulating performance is deteriorated. Can be suppressed. Further, as shown in FIG. 5, the height of the vacuum heat insulating material 211 having higher heat insulating performance than the urethane 212 is increased by lowering the height in the vertical direction (z direction) embedded in the ceiling wall surface of the lighting device 7. , It is also possible to suppress the deterioration of the heat insulating performance.

In the examples shown in FIGS. 4 to 7, the ratio relationship between the thickness of the vacuum heat insulating material 211 and the urethane 212 is an example, and if the vacuum heat insulating material 211 is made as thick as possible, the heat insulating performance can be improved, and urethane. The cost can be reduced by making the 212 as thick as possible.

FIG. 8 is a schematic view for explaining the irradiation of light by the lighting device 7 when the lighting device 7 is provided on the upper part of the storage shelf 1a. FIG. 9 is a schematic view for explaining the irradiation of light by the lighting device 7 when the lighting device 7 is provided on the front side of the storage shelf 1a. 8 and 9 show a state in which the double door 1A of the refrigerator compartment 1 is opened by the user U.

In the example shown in FIG. 8, the lighting device 7 is provided on the upper part of the storage shelf 1a, and the optical axis L of the LED is set so that the front side of the storage shelf 1a is irradiated with light. In this case, when the food 10 is arranged on the front side of the storage shelf 1a, the light from the lighting device 7 is blocked by the food 10. Therefore, the light from the lighting device 7 does not irradiate the front surface of some foods 10, and the visibility inside the refrigerator compartment 1 deteriorates when the user U opens the double door 1A and looks inside the refrigerator compartment 1. ..

On the other hand, in the example shown in FIG. 9, the lighting device 7 is on the front side of the storage shelf 1a, and the optical axis L of the LED is set so that the front side of the storage shelf 1a is irradiated with light. In this case, even if the food 10 is arranged on the front side of the storage shelf 1a, the amount of light blocked by the food 10 is reduced. As a result, the light is radiated to the front surface of all the foods 10, so that the visibility when the user U opens the double door 1A and looks inside the refrigerator compartment 1 is improved.

As described above, the visibility in the refrigerating room 1 differs greatly depending on the arrangement position of the lighting device 7 in the refrigerating room 1, and it is better to arrange the lighting device 7 on the front side of the refrigerating room 1 (refrigerator 100) as much as possible. It is effective for improving the visibility of 10. Therefore, in the refrigerator 100 according to the first embodiment, the lighting device 7 is provided on the front side of the storage shelf 1a so as to improve the visibility in the refrigerator compartment 1.

It is conceivable to arrange the lighting device 7 between the door pocket 1b and the storage shelf 1a in order to prevent the food 10 stored in the door pocket 1b and the door pocket 1b from coming into contact with the lighting device 7. However, in this case, it is necessary to reduce the storage shelf 1a or the door pocket 1b, which reduces the food storage amount.

Next, the arrangement of the lighting device 7 with respect to the left-right direction (x direction) of the refrigerating chamber 1 will be described. In FIG. 2, the lighting device 7 and the food 10 arranged in the door pocket 1b are arranged at the locations where they collide when projected from the side surface of the refrigerator 100, but the lighting device 7 and the food 10 are left and right. The positional relationship in the direction (x direction) is not clear. Therefore, here, the relationship between the lighting device 7 and the food 10 in the left-right direction (x direction) will be considered.

As described above, in the refrigerator compartment 1, the door pocket 1b of the double door 1A can store food 10 having a predetermined height such as a 350 ml can. When the lighting device 7 is provided on the front side of the storage shelf 1a and on the ceiling wall surface, the lighting device 7 is stored in the door pocket 1b when the double door 1A is closed depending on the arrangement position of the lighting device 7. May collide with the food 10 that has been made.

FIG. 10 is an internal structural view of the refrigerating chamber 1 of FIG. 2 when viewed from above, when the lighting device 7 is provided at a position overlapping the door pocket 1b when viewed from above. FIG. 11 is an internal structural view of the refrigerating chamber 1 of FIG. 2 when viewed from above, when the lighting device 7 is provided at a position where it does not overlap the door pocket 1b when viewed from above.

As shown in FIG. 10, when the lighting device 7 is provided at a position overlapping the door pocket 1b when viewed from the upper surface, when projected from the upper surface of the refrigerator 100, depending on the height of the food 10 stored in the door pocket 1b. , The lighting device 7 collides with the food 10. On the other hand, as shown in FIG. 11, when the lighting device 7 is provided at a position where it does not overlap the door pocket 1b when viewed from above, the lighting device 7 moves the door pocket 1b when the double door 1A is opened and closed. It is out of range. Therefore, the lighting device 7 does not collide with the food 10.

Therefore, as shown in FIG. 11, the lighting device 7 in the first embodiment has the door pocket 1b and the door pocket 1b when the double door 1A is opened and closed in the rotation direction (the direction of the dotted arrow in FIG. 11). It is provided at a position where it does not collide with the stored food 10. That is, the lighting device 7 is provided at a position that does not overlap the opening / closing locus of the door pocket 1b that rotates together with the double door 1A.

[Light irradiation angle by the lighting device 7]
Next, the irradiation angle of light by the lighting device 7 will be described. In the lighting device 7 according to the first embodiment, the optical axis L of the LED is set at preset angles around the x-axis in the left-right direction, the y-axis in the front-rear direction, and the z-axis in the up-down direction. It is installed so as to be inclined.

Generally, a surface mount LED is used as the LED of the lighting device 7 in the refrigerator 100. In this case, the directional angle θ of the LED is often about 120 °, and the inside of the refrigerator can be illuminated brightly in a wide range. Further, by setting the angle of the lighting device 7 in advance, the lighting device 7 can illuminate the foods 10 arranged at various places in the refrigerator, and can illuminate every corner of the refrigerator.

(Inclination angle around the x-axis of the optical axis L)
FIG. 12 is a schematic view for explaining the inclination angle of the LED optical axis L around the x-axis in the lighting device 7. FIG. 12 is a view of the refrigerating room 1 from the side surface side, showing a state in which the double door 1A of the refrigerating room 1 is opened. As shown in FIG. 12, in the lighting device 7, the optical axis L of the LED is tilted toward the back wall side (y direction) of the refrigerating chamber 1 by an angle α around the x-axis with reference to the vertical direction (z direction). It is provided in. The angle α at this time is preferably 0 to 90 °.

(Inclination angle of the optical axis L around the z-axis)
FIG. 13 is a schematic view for explaining the inclination angle of the optical axis L of the LED in the lighting device 7 around the z-axis. FIG. 13 is a view of the refrigerating room 1 from the upper surface side, showing a state in which the double door 1A of the refrigerating room 1 is opened. As shown in FIG. 13, the lighting device 7 is provided so that the optical axis L of the LED is inclined in the left-right direction (x direction) by an angle β around the z-axis with reference to the front-back direction (y direction). ..

(Inclination angle of the optical axis L around the y-axis)
FIG. 14 is a schematic view for explaining an inclination angle of the optical axis L of the LED in the lighting device 7 around the y-axis. FIG. 14 shows a case where the refrigerating room 1 is viewed from the front side, and shows a state in which the double door 1A of the refrigerating room 1 is opened. As shown in FIG. 14, the lighting device 7 is provided so that the optical axis L of the LED is tilted in the left-right direction (x direction) by an angle γ around the y-axis with reference to the vertical direction (z direction). ..

When the angles α, β, and γ of the optical axis L of the LED are set in this way, the optical axis L of the LED is directed toward the center of the refrigerator, so that the lighting device 7 is located on the front side in the refrigerator compartment 1. The front surface of the food 10 can be illuminated as a whole from the center direction when viewed from the front. As a result, the visibility of the food 10 stored in the refrigerator compartment 1 can be improved. Further, since the side wall and the back wall in the refrigerator compartment 1 are irradiated with light, the inside of the refrigerator compartment 1 looks bright and the feeling of cleanliness can be improved. Further, since the optical axis L of the LED is directed toward the back wall side, when the user opens the double door 1A and looks inside the refrigerator compartment 1, it becomes difficult for the optical axis L of the LED to enter the user's line of sight. .. Therefore, it is possible to reduce glare to the user.

It is preferable to set the inclination angles β and γ of the optical axis L of the LED around the z-axis and the y-axis when the widths in the left-right direction (x direction) of the pair of double doors 1A are different. When the widths of the pair of double doors 1A in the left-right direction (x direction) are different, the lighting device 7 is deviated from the center when viewed from the front side due to the different widths of the pair of double doors 1A. It will be installed in the position. In this case, by setting the angles β and γ of the optical axis L of the LED, the optical axis L of the LED faces toward the center, so that the inside of the refrigerator compartment 1 can be illuminated as a whole. Then, since the inside of the refrigerating chamber 1 can be illuminated more uniformly, the visibility of the food 10 stored in the refrigerating chamber 1 can be improved.

As described above, in the refrigerator 100 according to the first embodiment, the lighting device 7 is arranged outside the moving range of the door pocket 1b that rotates together with the double door 1A when the double door 1A is opened and closed. As a result, the collision between the lighting device 7 and the door pocket 1b and the food 10 stored in the door pocket 1b is prevented. Therefore, since the food 10 having a predetermined height can be stored in the door pocket 1b, it is not necessary to set a restriction on the food 10 stored in the door pocket 1b. The lighting device 7 is arranged in a place where the food 10 cannot be arranged, which is neither the upper part of the storage shelf 1a nor the moving range of the door pocket 1b. Therefore, the lighting device 7 can be arranged without reducing the storage capacity of the food 10 in the refrigerating room 1.

Further, the lighting device 7 is not arranged so as to be embedded in the wall surface of the refrigerating chamber 1 as shown in FIGS. 6 and 7, but is attached to the wall surface as shown in FIGS. 4 and 5. As a result, the lighting device 7 is arranged without reducing the heat insulating member 210 constituting the housing 100A of the refrigerator 100, so that the visibility in the refrigerator compartment 1 is improved while suppressing the deterioration of the heat insulating property of the refrigerator 100. Can be made to.

Furthermore, when the design is changed from the conventional refrigerator, only the arrangement position of the lighting device 7 is changed, and additional parts and work processes are not generated due to the change of the arrangement position. Therefore, the above effect can be obtained while suppressing the increase in cost.

In the refrigerator 100 according to the first embodiment, when projected from the upper surface of the refrigerator, the lighting device 7 is arranged on the front side of the storage shelf 1a and emits light to the food 10 stored in the storage shelf 1a. The optical axis L of the LED is set so as to irradiate. As a result, even when the food 10 is stored in the storage shelf 1a, the front surface of the storage shelf 1a is totally irradiated with light. Therefore, the visibility in the refrigerator compartment 1 can be improved.

In the refrigerator 100 according to the first embodiment, the lighting device 7 is arranged so that the optical axis L of the LED is inclined around an axis indicating the left-right direction. Further, the lighting device 7 is arranged so that the optical axis L of the LED is inclined around an axis indicating the vertical direction. Further, the lighting device 7 is arranged so that the optical axis L of the LED is inclined around an axis indicating the front-rear direction.

As a result, the lighting device 7 can illuminate the front surface of the food 10 as a whole from the center direction when viewed from the front side and the front side in the refrigerator compartment 1. Therefore, the visibility of the food 10 stored in the refrigerator compartment 1 can be improved. Further, since the side wall and the back wall in the refrigerator compartment 1 are irradiated with light, the inside of the refrigerator compartment 1 looks bright and the feeling of cleanliness can be improved. Further, since the optical axis L of the LED is directed toward the back wall side, when the user opens the double door 1A and looks inside the refrigerator compartment 1, it becomes difficult for the optical axis L of the LED to enter the user's line of sight. , The glare to the user can be reduced.

Embodiment 2.
Next, the second embodiment will be described. In the second embodiment, a case where the lighting device 7 is arranged by using a guide pin for guiding the rotation direction of the rotating partition body provided in the double door 1A will be described. In the second embodiment, the same reference numerals are given to the parts common to the first embodiment, and detailed description thereof will be omitted.

FIG. 15 is an internal structural view of the refrigerator compartment 1 when the refrigerator 100 according to the second embodiment is viewed from the side surface side. FIG. 15 shows a state in which the double door 1A of the refrigerator compartment 1 is opened. Generally, when a double door 1A is provided in the refrigerator room 1 of the refrigerator 100, one of the pair of doors constituting the double door 1A is a pair formed when the double door 1A is closed. A rotating partition 1c (see FIG. 11) (not shown) is provided to close the gap between the doors. Further, as shown in FIG. 15, a guide pin 20 is provided on the refrigerating chamber 1 side so as to correspond to the rotary partition body 1c.

The guide pin 20 is provided to guide the rotation direction of the rotary partition body 1c provided on the double door 1A. The guide pin 20 is provided on the ceiling wall surface at a position facing the double door 1A. The guide pin 20 is not limited to this, and may be provided on the floor surface of the refrigerator compartment 1.

FIG. 16 is a schematic view showing an example of the lighting device 7 and the guide pin 20 of FIG. As shown in FIG. 16, in the second embodiment, the guide pin 20 is provided on the front side of the refrigerator with respect to the lighting device 7 arranged on the ceiling wall surface. That is, the lighting device 7 is provided on the back side of the refrigerator with respect to the guide pin 20. Further, the back surface portion 20a forming the back surface side of the refrigerator of the guide pin 20 is formed higher than the height of the lighting device 7 when viewed from the front.

When the lighting device 7 is arranged in this way, as shown in FIG. 15, when the user U opens the double door 1A and looks at the inside of the refrigerator compartment 1 from the front, the lighting device 7 is operated by the guide pin 20. It is arranged so that it does not enter the user U's field of view and is not recognized by the user U. Further, the light emitted from the lighting device 7 brightens the inside of the refrigerating chamber 1, while the light directly emitted from the lighting device 7 to the user U is blocked by the back surface of the guide pin 20. Therefore, it is possible to suppress the unpleasant glare that the user U feels due to the direct light from the lighting device 7. Further, when the lighting device 7 irradiates the light as described above, the entire inside of the refrigerating chamber 1 becomes bright, so that the degree of brightness balance in the refrigerating chamber 1 can be improved, and the visibility and cleanliness can be improved. The feeling can be further improved.

Further, since the lighting device 7 is not recognized by the user U, the inside of the refrigerating room 1 looks relatively bright from the user U. Further, since the lighting device 7 is not recognized by the user U, the lighting device 7 serves as indirect lighting, and the design of the refrigerator 100 can be enhanced. Furthermore, since the guide pin 20 is provided in the conventional refrigerator provided with the double door 1A, the number of parts is increased when the design is changed from the conventional refrigerator to the refrigerator 100 according to the second embodiment. It is possible to change the design of the refrigerator at low cost without increasing the number of doors.

In the examples shown in FIGS. 15 and 16, the case where the lighting device 7 and the guide pin 20 are formed separately has been described, but the present invention is not limited to this, and for example, the lighting device 7 and the guide pin 20 are integrated. May be formed in.

FIG. 17 is a schematic view showing another example of the lighting device 7 and the guide pin 20 of FIG. As shown in FIG. 17, the lighting device 7 is connected by using the back surface portion 20a of the guide pin 20 as the front surface portion of the cover portion of the device.

FIG. 18 is a schematic view showing another example of the guide pin 20 of FIG. FIG. 19 is a schematic view showing another example of the guide pin 20 of FIG. In the second embodiment, as shown in FIGS. 18 and 19, the back surface portion 20a forming the back surface side of the refrigerator of the guide pin 20 overlaps with a part of the lighting device 7 when projected from the upper surface of the refrigerator. It may be formed so as to extend to the back side of the refrigerator. In this case, the lighting device 7 can make the user U more difficult to recognize.

By integrally forming the lighting device 7 and the guide pin 20 in this way, the number of parts can be reduced, and the integrally formed lighting device 7 and the guide pin 20 can be assembled at the same time. , The manufacturing process of the refrigerator 100 can be reduced. Therefore, the refrigerator 100 can be manufactured inexpensively and in a short time.

Further, when installing the lighting device 7 and the guide pin 20, it is not necessary to install each of them in the refrigerating chamber 1 using screws, so that the number of screwing points can be reduced. Therefore, it is possible to reduce the price due to the working time required for screwing and the number of screws used. And this also makes it possible to manufacture the refrigerator 100 at a lower cost and in a shorter time.

Further, since a part of the cover portion of the lighting device 7 is replaced by the guide pin 20, the cover can be miniaturized, so that the lighting device 7 can be manufactured at low cost. Furthermore, since the lighting device 7 and the guide pin 20 are integrally formed, it becomes more difficult for the user U to recognize the lighting device 7 as compared with the examples shown in FIGS. 15 and 16. Therefore, the role of the lighting device 7 as indirect lighting can be further enhanced, and the design can be further improved.

As described above, in the refrigerator 100 according to the second embodiment, the lighting device 7 is arranged on the back side of the guide pin 20. At this time, the guide pin 20 is preferably formed so that the height of the back surface portion 20a is higher than the height of the lighting device 7. As a result, since the lighting device 7 is arranged so as not to be recognized by the user U, the unpleasant glare felt by the user U can be suppressed, and the inside of the refrigerating room 1 can be made to appear relatively bright.

Further, in the refrigerator 100 according to the second embodiment, the lighting device 7 and the guide pin 20 are integrally formed. As a result, the manufacturing process, the manufacturing cost, and the like are reduced, so that the refrigerator 100 can be manufactured at low cost and in a short time.

When the guide pin 20 is provided on the floor surface of the refrigerator compartment 1, the lighting device 7 may also be provided on the floor surface. Also in this case, the lighting device 7 is arranged on the back side of the guide pin 20. At this time, if the back portion 20a forming the back side of the refrigerator of the guide pin 20 is formed higher than the height of the lighting device 7 when viewed from the front, the user U is exposed to the direct light from the lighting device 7. It is possible to suppress the unpleasant glare that is felt.

Although the first and second embodiments of the refrigerator 100 have been described above, the refrigerator 100 is not limited to the above-described first and second embodiments, and various modifications and applications can be made without departing from the gist. Is. In the first and second embodiments, a case where a double door 1A composed of a pair of doors is provided as a storage room door of the refrigerating room 1 which is a storage room has been described as an example. Not limited. For example, as the storage room door, a single door composed of one door may be used.

FIG. 20 is an internal structural view of the refrigerating room 1 provided with the single door 1B when viewed from above. As shown in FIG. 20, the opening surface of the refrigerating chamber 1 is provided with a single door 1B formed by one door that opens and closes in a rotational direction about a hinge (not shown). Like the double door 1A, the single door 1B is provided with one or a plurality of door pockets 1b.

Also in this case, similarly to the first and second embodiments, when the single door 1B is opened and closed in the rotation direction (the direction of the dotted arrow in FIG. 20), the lighting device 7 has the door pocket 1b and the door pocket 1b. It may be provided at a position where it does not collide with the food 10 stored in the door. That is, the lighting device 7 may be provided at a position outside the moving range of the door pocket 1b that is interlocked with the single door 1B.

FIG. 21 is an internal structural view of another example of the refrigerator compartment 1 provided with the single door 1B when viewed from above. FIG. 20 described above shows a case where one door pocket 1b is provided on the surface of the single door 1B on the refrigerating chamber 1 side, but in FIG. 21, the door pocket 1b is divided. That is, in this example, a plurality of door pockets 1b are provided on the surface of the single door 1B on the refrigerating chamber 1 side. As described above, even when a plurality of door pockets 1b are provided on the single door 1B, the lighting device 7 is linked to the single door 1B as in the example shown in FIG. 20. It may be provided at a position outside the moving range of.

FIG. 22 is an internal structural view of still another example of the refrigerator compartment 1 provided with the single door 1B when viewed from above. FIG. 22 shows an example in which the single door 1B opens to the left. 20 and 21 show a case where the refrigerator 100 is provided so that the single-door door 1B opens to the right side when the refrigerator 100 is viewed from the front, but the present invention is not limited to this, and as shown in FIG. 22, the single-door door 1B is provided. 1B may be provided so as to open on the left side.

If the lighting device 7 is not recognized by the user U as in the second embodiment, a component replacing the guide pin 20 of the second embodiment may be arranged on the front side of the lighting device 7. .. At this time, it is preferable that the height of the parts arranged on the front side of the lighting device 7 is higher than the height of the lighting device 7.

Further, in the second embodiment, it has been explained that arranging the lighting device 7 on the front side of the refrigerator 100 as much as possible is effective for improving the visibility of the food 10, but the guide pin 20 is provided on the refrigerator 100. In this case, the guide pin 20 may be arranged as close as possible. Alternatively, the lighting device 7 may be integrally formed with the guide pin 20 as described above. Further, in a model that does not use the guide pin 20, such as the refrigerator 100 provided with the single door 1B, the lighting device 7 may be arranged on the front side as much as possible without contacting the single door 1B. Good.

Further, in the first and second embodiments, the case where the LED is used as the light emitting source of the lighting device 7 has been described, but the present invention is not limited to this, and other light emitting parts such as an incandescent light bulb may be used as the light emitting source. For example, when an incandescent light bulb is used as the light emitting source of the lighting device 7, the cost of the light emitting component can be reduced as compared with the case where the LED is used, so that the cost of the entire lighting device 7 can be reduced. ..

The number of LEDs as a light emitting source of the lighting device 7 is not limited to one, and may be a plurality. By using a plurality of LEDs, it is possible to suppress unevenness of the light emitted into the refrigerating chamber 1. Further, when a plurality of LEDs are used, unevenness of light can be further suppressed by increasing the number of LEDs. On the other hand, by reducing the number of LEDs, the cost of the light emitting component can be reduced, so that the cost of the entire lighting device 7 can be reduced.

In the lighting device 7, the number of substrates on which the LED is mounted is not limited to one, and may be, for example, a plurality of substrates. In this case, the LED is mounted on each of the plurality of boards, and by making the optical axis L of the LED different for each board, it is possible to illuminate the inside of the refrigerator compartment 1 in a wider range, so that the brightness of the inside of the refrigerator is high. Is uniform, and the visibility inside the refrigerator can be improved.

The size of the lighting device 7 in the width direction (x direction) is preferably about the same as the width of the guide pin 20 in consideration of design. However, the larger the size of the lighting device 7 in the width direction (x direction), the more LEDs can be mounted on the lighting device 7. In this case, since the inside of the refrigerator can be brightened, the visibility of the stored food 10 can be improved. Further, when more LEDs are mounted, the lighting device 7 can easily diffuse the light by the cover, so that the inside of the refrigerating chamber 1 can be brightly illuminated in a wide range.

Further, the lighting device 7 is not limited to the case where it is arranged on the ceiling wall surface, and may be arranged on the floor wall surface or the side wall surface, for example. Further, the lighting device 7 is not limited to the case where it is arranged in the refrigerating room 1, and may be arranged in another storage room such as the freezing room 5.

Further, the irradiation angle of the light by the lighting device 7 is not limited to the case where it is set in advance, and may be arbitrarily changed by, for example, the user U. Thereby, the light irradiation state can be appropriately set according to the storage state of the food 10 in the refrigerating room 1.

Further, in the first and second embodiments, the case where the front-rear direction (y direction) of the lighting device 7 does not overlap with the storage shelf 1a when the refrigerating chamber 1 is viewed from the upper surface has been described, but the present invention is not limited to this. For example, the lighting device 7 may be formed so as to extend in the front-rear direction (y direction) until it overlaps with the storage shelf 1a.

FIG. 23 is an internal structural diagram showing an example when the refrigerating chamber 1 is viewed from above. As shown in FIG. 23, the lighting device 7 is formed so as to overlap the storage shelf 1a in the front-rear direction (y direction) when the refrigerating chamber 1 is viewed from above. As described above, when the lighting device 7 overlaps the storage shelf 1a in the front-rear direction (y direction), the storage shelf 1a is brightly illuminated, so that the visibility of the food 10 stored in the storage shelf 1a can be improved. it can.

FIG. 24 is a schematic view showing a first example for explaining the arrangement relationship between the lighting device 7 of FIG. 23 and the storage shelf 1a. FIG. 25 is a schematic view showing a second example for explaining the arrangement relationship between the lighting device 7 of FIG. 23 and the storage shelf 1a. FIG. 26 is a schematic view showing a third example for explaining the arrangement relationship between the lighting device 7 of FIG. 23 and the storage shelf 1a.

In the first example of FIG. 24, when the refrigerating chamber 1 is viewed from the upper surface, in the lighting device 7, the first portion 7a overlapping the storage shelf 1a in the front-rear direction (y direction) is below the ceiling wall surface of the refrigerating chamber 1. It is provided so as to project in the (z direction). In this case, since a part of the storage space in the height direction (z direction) of the storage shelf 1a is occupied by the lighting device 7, the storage space is reduced. Therefore, in the central portion of the refrigerating chamber 1 in which the lighting device 7 is arranged in the width direction (y direction), there is a possibility that the lighting device 7 and the food 10 come into contact with each other when the food 10 is stored in the storage shelf 1a. is there.

On the other hand, in the second example of FIG. 25, when the refrigerating chamber 1 is viewed from above, at least a part of the first portion 7a overlapping the storage shelf 1a in the front-rear direction (y direction) is the refrigerating chamber. It is provided so as to be embedded in the ceiling wall surface of 1. In this case, a part of the storage space in the height direction (z direction) of the storage shelf 1a is not occupied by the lighting device 7. Therefore, in the second example, it is possible to improve the visibility of the food 10 stored in the storage shelf 1a while improving the storage property of the food 10. The phrase "at least a part of the first portion 7a is embedded in the ceiling wall surface" includes that most of the first portion 7a is embedded in the ceiling wall surface. Further, the height embedded in the ceiling wall surface of the first portion 7a is, for example, half or more, or two-thirds or more, as appropriate in consideration of the arrangement relationship between the lighting device 7 and the storage shelf 1a, the dimensions of the lighting device 7, and the like. Can be decided.

In the third example of FIG. 26, when the refrigerating chamber 1 is viewed from above, the lighting device 7 has a first portion 7a that overlaps with the storage shelf 1a in the front-rear direction (y direction), as in the second example. At least a part of the refrigerator compartment 1 is provided so as to be embedded in the ceiling wall surface. Further, in the third example, the lighting device 7 is formed so as to be inclined so that the second portion 7b on the front side of the refrigerator is closer to the ceiling wall surface toward the back than the first portion 7a. As a result, the protruding area on the front side of the refrigerator in the lighting device 7 is smaller than that in the first example and the second example, so that the food storage property of the food 10 in the storage shelf 1a can be further improved. The phrase "at least a part of the first portion 7a is embedded in the ceiling wall surface" includes that most of the first portion 7a is embedded in the ceiling wall surface, as in the example shown in FIG. 25. Further, the height embedded in the ceiling wall surface of the first portion 7a is, for example, half or more, or two-thirds or more, as appropriate in consideration of the arrangement relationship between the lighting device 7 and the storage shelf 1a, the dimensions of the lighting device 7, and the like. Can be decided.

It should be noted that what has been described in the first to third examples is the same when the lighting device 7 is provided on the floor surface. That is, when the lighting device 7 is provided on the floor surface, and when the refrigerating chamber 1 is viewed from above, the lighting device 7 is a first portion 7a that overlaps with the storage shelf 1a in the front-rear direction (y direction). Is provided so as to be embedded in the floor surface of the refrigerating room 1.

Further, in the first and second embodiments, the case where the lighting device 7 is provided so as to project downward (z direction) on the ceiling wall surface of the refrigerating chamber 1 has been described, but the present invention is not limited to this. For example, the lighting device 7 may be provided so that only the cover projects downward.

FIG. 27 is a schematic view showing an example of the lighting device 7. As shown in FIG. 27, the lighting device 7 is provided so that only the lower surface portion of the cover protrudes from the ceiling wall surface of the refrigerator compartment 1 in the vertical direction (z direction), and the LED is located above the ceiling wall surface. There is. Even when the lighting device 7 is provided in this way, the light from the LED is irradiated to the front side of the storage shelf 1a, so that the visibility in the refrigerating chamber 1 can be improved.

In the first and second embodiments, the case where the optical axis L of the LED in the lighting device 7 is directed toward the center in the refrigerating chamber 1 has been described, but the present invention is not limited to this, and for example, the optical axis L of the LED is the refrigerating chamber 1. It may be directed to the floor surface of the. As a result, the user's hand is brightly illuminated, so that the user's visibility can be improved when the food 10 is added and taken out.

The lighting device 7 is not only controlled to turn on or off, but may be controlled, for example, to be bright at the time of lighting. FIG. 28 is a schematic view for explaining the brightness of the lighting device 7. The signal shown in FIG. 28 indicates a lighting control signal for one cycle supplied from the control board 120 to the lighting device 7 when the lighting device 7 is turned on. The lighting device 7 normally repeats turning on and off at a short cycle of about several kHz. At this time, the user does not appear that the lighting device 7 is blinking due to the optical illusion, but appears to be continuously lit.

When the lighting of the lighting device 7 is controlled in this way, the lighting device 7 determines the illuminance of the lighting light according to the duty ratio (= lighting time / cycle) which is the ratio of the lighting time in one cycle. To. Here, the cycle is a value obtained by adding the lighting time and the extinguishing time. That is, the illuminance of the illumination light from the illumination device 7 is determined by the ratio of the lighting time and the extinguishing time per cycle.

FIG. 29 is a graph showing an example of the relationship between the duty ratio of the lighting control signal and the illuminance. In FIG. 29, the horizontal axis shows the duty ratio of the lighting control signal, and the vertical axis shows the relative value when the illuminance when the duty ratio is “1” is used as a reference. As shown in FIG. 29, the illuminance of the lighting device 7 increases as the duty ratio increases, and decreases as the duty ratio decreases. That is, the illuminance of the lighting device 7 increases when the lighting time per cycle is lengthened, and decreases when the lighting time per cycle is shortened.

FIG. 30 is a graph showing an example of a lighting control signal when the duty ratio is 50%. FIG. 31 is a graph showing an example of a lighting control signal when the duty ratio is 75%. As shown in FIG. 30, when the duty ratio is 50%, the ratio of the lighting time and the extinguishing time of the LED of the lighting device 7 is “1: 1”. Further, as shown in FIG. 31, when the duty ratio is 75%, the ratio of the lighting time and the extinguishing time of the LED of the lighting device 7 is “3: 1”.

As described above, when the duty ratio is 75%, the lighting time per cycle is longer than when the duty ratio is 50%. Therefore, the illuminance of the lighting device 7 is higher when the duty is 75%. It gets higher. Therefore, when it is desired to increase the illuminance of the lighting device 7, the duty ratio of the LED lighting control signal is increased, and when it is desired to decrease the illuminance, the duty ratio of the lighting control signal is decreased. At this time, the current flowing through the LED is constant even if the duty ratio is changed.

The change in the illuminance of the lighting device 7 is not limited to the above-mentioned example. For example, the illuminance of the lighting device 7 may be changed by changing the value of the current supplied to the LED of the lighting device 7. Specifically, a plurality of resistors having different resistance values are provided for the circuit that supplies the current to the LED. Then, the resistance through which the current flows is switched according to the set illuminance. At this time, the duty ratio of the lighting control signal is constant.

1 Refrigerator room, 1A Kannon door, 1B Single door, 1a Storage shelf, 1b Door pocket, 1c Rotating partition, 2 Ice making room, 2A, 3A, 4A, 5A Draw-out door, 3 Switching room, 4 Vegetable room 5, Freezer room, 6 Insulation partition wall, 7 Lighting device, 7a 1st part, 7b 2nd part, 10 Food, 20 Guide pin, 20a Back part, 100 Refrigerator, 100A housing, 101 Operation panel, 102 Door open / close detection Switch, 111 compressor, 112 cooler, 113 blower fan, 114 air passage, 115 damper, 116 thermista, 120 control board, 121 acquisition unit, 122 calculation unit, 123 judgment unit, 124 drive unit, 125 storage unit, 130 lead Wire, 210 insulation member, 211 vacuum insulation material, 212 urethane, 220 screw plate, 301, 401, 501 storage case.

Claims

A storage room with an open front to store food inside,
A storage room door that can be opened and closed on the front surface,
A door pocket provided on the storage chamber side surface of the storage chamber door and for storing the food,
It is provided on the ceiling surface of the storage chamber so as to project downward, and the storage chamber is provided with a lighting device that irradiates light from a light emitting source.
The lighting device is
It is a position that overlaps with the door pocket in the front-rear direction of the ceiling surface.
A refrigerator arranged at a position that does not overlap the opening / closing locus of the door pocket in the left-right direction of the ceiling surface.
A storage shelf provided in the storage chamber for storing the food is further provided.
The lighting device is
The refrigerator according to claim 1, wherein the optical axis of the light emitting source is set so as to irradiate the food stored in the storage shelf with light.
The lighting device is
The refrigerator according to claim 1 or 2, wherein the optical axis of the light emitting source is arranged so as to be inclined with respect to the vertical direction around an axis indicating the left-right direction of the storage chamber.
The lighting device is
The refrigerator according to any one of claims 1 to 3, wherein the optical axis of the light emitting source is arranged so as to be inclined with respect to the front-rear direction around an axis indicating the vertical direction of the storage chamber.
The lighting device is
The refrigerator according to any one of claims 1 to 4, wherein the optical axis of the light emitting source is arranged so as to be inclined with respect to the left-right direction around an axis indicating the front-rear direction of the storage chamber.
The storage room door
It is a double door and
One of the pair of doors constituting the double door is provided with a rotary partition that closes the gap between the pair of doors formed when the double door is closed.
The storage room
A guide pin for guiding the rotation direction of the rotary partition is provided.
The lighting device is
The refrigerator according to any one of claims 1 to 5, which is arranged on the back side of the refrigerator of the guide pin.
The guide pin
The refrigerator according to claim 6, wherein the height of the back portion forming the back side of the refrigerator is formed higher than the height of the lighting device.
The back part
The refrigerator according to claim 7, which is formed so as to extend to the back side of the refrigerator so as to overlap a part of the lighting device in the front-rear direction.
The refrigerator according to any one of claims 6 to 8, wherein the lighting device and the guide pin are integrally formed.
A storage shelf provided in the storage chamber for storing the food is further provided.
The lighting device is
The refrigerator according to any one of claims 1 to 9, which is arranged at a position including a position overlapping with the storage shelf in the front-rear direction of the ceiling surface.
The lighting device is
The refrigerator according to claim 10, wherein at least a part of a portion overlapping the storage shelf in the front-rear direction of the ceiling surface is embedded in the ceiling surface.
The lighting device is
The refrigerator according to any one of claims 1 to 5, which is arranged on the floor surface of the storage room instead of the ceiling surface.
The storage room door
It is a double door and
One of the pair of doors constituting the double door is provided with a rotary partition that closes the gap between the pair of doors formed when the double door is closed.
The storage room
A guide pin for guiding the rotation direction of the rotary partition is provided on the floor surface.
The lighting device is
The refrigerator according to claim 12, which is arranged on the back side of the refrigerator of the guide pin.
The guide pin
The refrigerator according to claim 13, wherein the height of the back portion forming the back side of the refrigerator is formed higher than the height of the lighting device.
The back part
The refrigerator according to claim 14, which is formed so as to extend toward the back surface of the refrigerator so as to overlap a part of the lighting device in the front-rear direction.
A storage shelf provided in the storage chamber for storing the food is further provided.
The lighting device is
It is provided on the floor surface so as to project upward.
The refrigerator according to any one of claims 12 to 15, which is arranged at a position including a position overlapping with the storage shelf in the front-rear direction of the floor surface.
The lighting device is
The refrigerator according to claim 16, wherein a portion overlapping the storage shelf in the front-rear direction of the floor surface is embedded in the floor surface.