JP2012026678A - Refrigerator - Google Patents

Abstract

An object of the present invention is to provide a refrigerator in which a user can easily see the refrigerator compartment and the front side of the refrigerator compartment.
A refrigerating chamber 2 provided with a stacking shelf 8 on which stored items are placed, and a plurality of light emitting diodes 9 provided on the ceiling 13 side in the refrigerating chamber 2 for irradiating light. The light emitting diode 9 is arranged so that its optical axis 12 is directed to the front side of the refrigerator compartment 2 and intersects with the uppermost loading shelf 8.
[Selection] Figure 1

Description

  The present invention relates to a refrigerator.

  Conventionally, an incandescent light bulb has been mainly used for illumination of a refrigerator compartment and a door pocket provided in a refrigerator compartment door. In recent years, various types of light-emitting diodes (hereinafter referred to as LEDs) that are advantageous in terms of heat generation and power consumption have been proposed.

  Among them, a technique for irradiating light to the back side of the refrigerator in the LED has been proposed (for example, Patent Document 1). With this technology, LEDs are placed on the ceiling of the refrigeration room to make it easier for the user to visually recognize the back side of the refrigeration room, and the user can see the light axis with the strongest light from the LED facing the back side of the chilling room It is designed to suppress feeling dazzling.

  In addition, compared with incandescent bulbs, LEDs have the characteristics that the irradiation range is narrow because the light emitting area is small and the directivity is strong. Along with this, in order to reliably irradiate storage items placed in the refrigerator compartment and door pockets, if a large number of high-performance LEDs with high brightness are installed, the manufacturing cost of the refrigerator will increase. . In view of this, a technique has been proposed in which only two high-performance LEDs are arranged at intervals on the ceiling of the refrigerator compartment (see, for example, Patent Document 2).

JP 2009-79857 A (for example, page 4) Japanese Patent Laying-Open No. 2007-57157 (for example, FIG. 8)

  In the technique described in Patent Document 1, since the LED is inclined to the back side of the refrigerator compartment and arranged on the ceiling of the refrigerator compartment, the amount of light on the front side of the refrigerator compartment is reduced, and the user refrigerates. It was difficult to see the front side of the room.

  In the technique described in Patent Document 2, since there are two light emitting portions, when a stored item is placed directly under the LED, the light from the LED is blocked and the light is sufficiently in front of the refrigerator compartment and the refrigerator compartment. It has stopped reaching. Moreover, when the light from the LED does not spread, a place where the light from the LED is difficult to reach is created, and it is difficult for the user to visually recognize the refrigerating room and the front side of the refrigerating room.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator in which a user can easily see the refrigerator compartment and the front side of the refrigerator compartment.

  A refrigerator according to the present invention includes a refrigeration room provided with a loading shelf on which stored items are placed, and a plurality of light emitting diodes that are provided on the ceiling side of the refrigeration room and irradiate light. Is arranged so that its optical axis is directed to the front side of the refrigerator compartment and intersects with the uppermost loading shelf.

  According to the refrigerator according to the present invention, since the LEDs are provided as described above, it is easy for the user to visually recognize the refrigerator compartment and the front side of the refrigerator compartment.

It is a schematic sectional side view of the refrigerator which concerns on Embodiment 1 of this invention. It is the front view and top view of a refrigerator compartment which are shown in FIG. It is a figure showing the light emission characteristic of LED provided in the refrigerator shown in FIG. It is the top view and side sectional drawing of the refrigerator compartment and door of the refrigerator which are shown in FIG. It is the upper side figure and side sectional drawing of the air path which cools the door pocket provided in the refrigerator shown in FIG. It is explanatory drawing at the time of providing a lamp cover in the refrigerator which concerns on Embodiment 2 of this invention, and expanding the irradiation range of LED. It is a figure which shows the drive circuit example of the refrigerator which concerns on Embodiment 3 of this invention. It is explanatory drawing of the means to alert | report the abnormality (operation state) of the conventional refrigerator. It is explanatory drawing which alert | reports abnormality of a refrigerator by the refrigerator shown in FIG. 7 by blinking of LED. It is explanatory drawing of the relationship between the brightness and lighting time of LED of the refrigerator which concerns on Embodiment 4 of this invention. It is explanatory drawing of the relationship between the abnormality of the refrigerator shown in FIG. 10, and duty ratio. It is a front view of the refrigerator which concerns on Embodiment 5 of this invention. It is explanatory drawing of the illumination at the time of opening and closing of the door of the refrigerator shown in FIG. It is a front view of the refrigerator which concerns on Embodiment 6 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic sectional side view of a refrigerator 1a according to Embodiment 1 of the present invention. 2 is a front view and a top view of the refrigerator compartment 2 shown in FIG. FIG. 3 is a diagram showing the light emission characteristics of the LED 9 provided in the refrigerator 1a shown in FIG. 4 is a top view and a side sectional view of the refrigerator compartment 2 and the door 6 of the refrigerator 1 shown in FIG. FIG. 5 is a schematic configuration example diagram in the case where the air passage 25 for cooling the stored item provided in the refrigerator 1a shown in FIG. 1 is provided. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

[Composition of refrigerator 1a]
First, the configuration of the refrigerator 1a will be described.
As shown in FIG. 1A, the refrigerator 1 a includes a refrigerator compartment 2, a switching room 3, a vegetable compartment 4, and a freezer compartment 5 having a space for storing stored items (food, etc.). The refrigerator 1 a has a function of refrigeration and freezing stored items, and in particular, the LED 9 is provided on the ceiling 13 side of the refrigerator compartment 2.

  Although the refrigerator 1a is demonstrated as what is carrying out the shape of a substantially rectangular parallelepiped, it is not specifically limited. Here, based on the installation direction of the refrigerator 1a, the direction (side) from the refrigerating chamber 2 toward the door 6 (described later) is defined as the front direction (front side), and the direction from the door 6 toward the refrigerating chamber 2 is defined. (Side) is defined as the rear direction or the depth direction (back side). Moreover, the ceiling 13 of the refrigerator compartment 2 is demonstrated as what is the ceiling 13 in the refrigerator compartment 2. The vertical direction is a direction substantially perpendicular to the floor surface on which the refrigerator 1 is installed.

  The refrigerator compartment 2 has a space for storing stored items, and stores the stored items in a refrigerator. Although the refrigerator compartment 2 demonstrates as what is carrying out the shape of a substantially rectangular parallelepiped, it is not specifically limited. In the refrigerating room 2, a plurality of stacking shelves 8 for loading stored items are provided so as to be substantially parallel to the ceiling 13 (or the lower surface) of the refrigerating room 2. As shown in FIGS. 1 and 2, the loading shelf 8 partitions the refrigerator compartment 2 to improve the storage capacity of stored items. The shape of the stacking shelf 8 is described as being a substantially rectangular plate material, but is not particularly limited. In addition, in the refrigerator 1a, although the loading shelf 8 is demonstrated as what is supported by the side surface in the refrigerator compartment 2, etc., you may move now in a perpendicular direction.

  A hinged door 6 is provided on the front surface of the refrigerator compartment 2, and opening / closing between the refrigerator compartment 2 and the outside of the refrigerator 1a is performed by opening and closing the door 6. The door 6 is provided with a door pocket 11 for placing stored items. The door 6 has a right door 6A and a left door 6B. Here, when the refrigerator 1a is viewed from the front, the door on the right side is the right door 6A, and the door on the left side is the left door 6B. These right door 6 </ b> A and left door 6 </ b> B are respectively connected to both sides of the front surface of the refrigerator compartment 2 by hinges (not shown). Moreover, the door pocket 11 for accommodating stored goods is provided in the refrigerator compartment 2 side of the door 6. FIG. The right door 6A and the left door 6B may have different sizes (asymmetrical when viewed from the front).

  As shown in FIG. 1, the ceiling 13 of the refrigerator compartment 2 has an inclination of a predetermined angle β so that the height in the vertical direction decreases from the front side toward the back side. In addition, instead of the ceiling 13 of the refrigerator compartment 2 being inclined at a predetermined angle β, a light emitting surface of the LED 9 described later may be inclined at a predetermined angle β. Further, the ceiling 13 of the refrigerator compartment 2 may be inclined in a curved manner as long as the optical axis 12 of the LED 9 intersects the loading shelf. As shown in FIG. 2, the LED 9 is provided on the ceiling 13 of the refrigerating room 2, and when the door 6 is opened, the LED 9 is turned on so that the refrigerating room 2 and the door pocket 11 are irradiated with light. It has become. The LED 9 emits visible light for the user to visually recognize the stored item. As shown in FIG. 2, when the LEDs 9 arranged in a column in the depth direction from the front side to the back side of the refrigerator compartment 2 are defined as one row, the LEDs 9 are composed of two rows. The LED 9 will be described as being provided in a row in a region divided by a line A that divides the refrigerator compartment 2 into two equal parts when viewed from the front. However, when the sizes of the right door 6A and the left door 6B are different, the line A comes to a position where the right door 6A and the left door 6B are combined when the right door 6A and the left door 6B are closed. Note that the number of columns of the LEDs 9 is not particularly limited. In addition, the number of LEDs 9 per row is two or more.

  As shown in FIG. 3, the LED 9 is known to have a strong directivity of light related to light emission. That is, the luminous intensity is highest in the direction of the optical axis 12 perpendicular to the light emitting surface of the LED 9, and the luminous intensity decreases as the distance from the optical axis 12 increases. Here, an effective irradiation range α of the LED 9 is a range in which the light intensity on the optical axis 12 is irradiated with a light intensity of 50% or more. However, the light emitted from the LED 9 does not mean that the light is not irradiated on the portion other than the effective irradiation range α. In FIG. 3, when the direction of the optical axis 12 is 0 °, ± about 50 ° is included in the effective irradiation range α. The effective irradiation range α defines a range in which the LED 9 can be said to be substantially effective in illuminating the refrigerator compartment 2.

  The switching chamber 3 has a space for storing stored items, and the stored items are refrigerated or frozen. The switching chamber 3 is provided with a drawer-type door 7a. Opening / closing the switching chamber 3 and the outside of the refrigerator 1a is performed by opening and closing the door 7a.

  The vegetable compartment 4 has a space for storing stored items, and is particularly suitable for refrigerated vegetables. The vegetable compartment 4 is provided with a drawer-type door 7b. Opening / closing the switching chamber 3 and the outside of the refrigerator 1a is performed by opening and closing the door 7b.

  The freezer compartment 5 has a space for storing stored items, and in particular, freezes the stored items. The freezer compartment 5 is provided with a drawer-type door 7c. By opening and closing the door 7c, opening / closing between the freezer compartment 5 and the outside of the refrigerator 1a is performed.

[Range of Predetermined Angle β, Positional Relationship between LED 9 and Loading Rack 8]
As shown in FIG. 4, the predetermined angle β of the ceiling 13 of the refrigerator compartment 2 is all in the direction in which the optical axis 12 of the LED 9 is directed to the front side of the refrigerator compartment 2 and from the door 6 to the refrigerator compartment 2. The optical axis 12 of the LED 9 is not in front of the front edge B1 of the uppermost loading shelf 8 (the direction from the refrigerator compartment 2 toward the door 6). That is, all the LEDs 9 are provided so that the optical axis 12 faces the front side of the refrigerator compartment 2 and is arranged so as to intersect with the uppermost stacking shelf 8. In addition, the predetermined angle β may be, for example, about 1 ° to 20 ° so as not to press the storage space of the refrigerator compartment 2. Note that the uppermost loading shelf 8 is provided at the highest position in the vertical direction in the loading shelf 8. Further, as shown in FIG. 4, the front edge B <b> 1 of the loading shelf 8 corresponds to a front edge when the refrigerator 1 is viewed from the front.

[Cooling air sent into door pocket 11]
FIG. 5 is a top view and a side sectional view of an air passage 25 that cools the door pocket 11 provided in the refrigerator 1 shown in FIG. 1. As shown in FIG. 5, the ceiling 13 of the refrigerator compartment 2 may be configured to be provided with an air passage 25 for sending cold air into the refrigerator compartment 2. The air passage 25 guides the fed cool air from the outlet 26 to the door pocket 11 in particular. Here, the blowout port 26 is an opening that discharges the cool air sent through the air passage 25 into the refrigerator compartment 2. The position of the outlet 26 is preferably formed in front of the uppermost stacker 8 in the direction from the refrigerator compartment 2 toward the door 6, for example. It can be expected that not only the stored items in the door pocket 11 but also the LEDs 9 are cooled by the cold air supplied from the outlet 26 through the air passage 25. That is, it is possible to suppress the brightness of the LED 9 from being lowered due to the heat generated by the LED 9 and to prevent the life of the LED 9 from being shortened. Further, since the LED 9 is less likely to generate heat than an incandescent bulb, it goes without saying that the cold air flowing through the air passage 25 is not easily heated.

[Effects of the refrigerator 1a]
Since the refrigerator 1a uses a plurality of LEDs 9 as the light source, even if a stored item is placed immediately below one of the LEDs 9 and the light is blocked, the other light is not blocked by the LED 9 and the refrigerator 9 and the refrigerator The visibility of the front side of the chamber 2 (including the door pocket 11 and the like) is suppressed from decreasing. In addition, since a plurality of LEDs 9 are used as light sources, the area in the refrigerator compartment 2 where light does not easily reach is reduced, and the visibility of the refrigerator compartment 2 (including the door pocket 11, the display device, the outside of the refrigerator 1a, etc.) decreases. Needless to say, this is suppressed. In addition, all the LEDs 9 are arranged so that the optical axis 12 faces the front side of the refrigerator compartment 2 and intersects with the uppermost loading shelf 8, thereby reducing glare to the user. In addition, not only the refrigerator compartment 2 but also the door pocket 11 can be irradiated with light. That is, since the refrigerator 1a is provided with the LED 9 as described above, the refrigerator compartment 2 and the front side of the refrigerator compartment 2 are easily visible.

Embodiment 2.
[Expansion of LED 9 light]
FIG. 6 is an explanatory diagram in the case where the lamp cover 15 is provided in the refrigerator 1b according to Embodiment 2 of the present invention and the illumination range of the LED 9 is enlarged. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.

The lamp cover 15 refracts the light emitted from the LED 9 to expand the illumination range. The lamp cover 15 may be provided in the traveling direction of the light emitted from the LED 9.
As shown in FIG. 6, the lamp cover 15 has irregularities formed in a direction substantially perpendicular to the left and right side surfaces of the refrigerator 1 b, for example. When the light emitted from the LED 9 reaches the lamp cover 15, The light is refracted so that light spreads in the direction from the refrigerator compartment 2 toward the door 6 in particular. In addition, as shown in FIG. 6, when the lamp cover 15 is uneven, for example, in a direction substantially perpendicular to the door 6, the light emitted from the LED 9 is particularly perpendicular to the left and right side surfaces of the refrigerator 1. To spread. That is, the refrigerator 1 b can expand the illumination range by the lamp cover 15. Note that the shape and direction of the unevenness formed on the lamp cover 15 may be combined with a plurality of unevenness patterns in accordance with the direction and position where the visibility is particularly desired to be improved.

[Effects of refrigerator 1b]
In addition to the effects of the refrigerator 1a, the refrigerator 1b is provided with the lamp cover 15 that refracts the light emitted from the LED 9 and expands the illumination range, so that the illumination range is expanded and the refrigerator compartment 2 and the refrigerator compartment 2 are expanded. It becomes easy to visually recognize the front side.

Embodiment 3.
[Description of Drive Circuit for LED 9 of Refrigerator 1c]
FIG. 7 is a diagram illustrating a drive circuit example of the refrigerator 1c according to the third embodiment of the present invention. FIG. 8 is an explanatory diagram of a means for notifying an abnormality (operation state) of a conventional refrigerator. FIG. 9 is an explanatory diagram in which the refrigerator 1 c notifies the abnormality of the refrigerator 1 c by blinking the LED 9. In the third embodiment, the same reference numerals are used for the same parts as in the first and second embodiments, and differences from the first and second embodiments will be mainly described. As shown in FIG. 7, in the case of a refrigerator that employs an incandescent bulb as illumination, the incandescent bulb is switched on / off by turning on / off a mechanical contact such as a relay 19. On the other hand, since the refrigerator 1c employs the LED 9 as illumination, the LED 9 can be turned on / off using a semiconductor element such as the transistor 20 as shown in FIG. Since the voltage / current related to light emission (drive) of the LED 9 is smaller than that of the incandescent bulb, the refrigerator 1c can suppress power consumption. In addition, a driving component for turning on / off the LED 9 with respect to the incandescent bulb is relatively inexpensive and has a long life. Furthermore, the transistor 20 used in the LED 9 is faster to switch on / off than the relay 19 used in the incandescent bulb.

  Utilizing the fact that the switching of the transistor 20 is rapidly turned on / off, the LED 1 is repeatedly turned on / off in a fast cycle, whereby the refrigerator 1c can notify the user of the abnormality of the refrigerator 1c. . Specifically, when an abnormality occurs in the refrigerator 1c, the number of blinks of the LED 9 may be controlled according to the type of abnormality.

[Notification Method 1 for Abnormality of Refrigerator 1c]
As shown in FIG. 8, in the conventional refrigerator, when the control means (not shown) provided in the refrigerator determines that an abnormality has occurred in the refrigerator, for example, it is provided on the operation panel 21 installed on the door of the refrigerator. A predetermined number or the like is displayed on the liquid crystal display unit 22 or the abnormality of the refrigerator is notified to the user by the number of blinks of the abnormality display LED 23 provided on the operation panel 21 as shown in FIG. Although the refrigerator 1c demonstrates as what is provided with the liquid crystal display part 22 and LED 23 for abnormality display like the conventional refrigerator, it does not need to be provided.

  As shown in FIG. 9, the refrigerator 1c notifies the user of the abnormality of the refrigerator 1c by the number of blinks of the LED 9. For example, in order to represent an abnormality defined by the number “E34”, the control means (not shown) causes the LED 9 to blink three times at 0.5 second intervals, and then turns on the LED 9 for a predetermined time. It is sufficient to repeat the operation of blinking 4 times at intervals of 0.5 seconds. In addition, as a kind of said abnormality, the door 6 has been opened for a long time, the temperature sensor (illustration omitted) has stopped working, etc. can be considered.

[Effect of refrigerator 1c]
Since the refrigerator 1c uses the LED 9 instead of the incandescent bulb in addition to the effect of the refrigerator 1a, the power consumption can be suppressed, and the cost increase can be suppressed because the cost of the drive circuit is low. In addition, it has a long service life and can be switched on / off quickly.

Embodiment 4.
[Notification Method 2 for Abnormality of Refrigerator 1d]
FIG. 10 is an explanatory diagram of the relationship between the brightness and the lighting time of the LED 9 of the refrigerator 1d according to Embodiment 4 of the present invention. FIG. 11 is an explanatory diagram of the relationship between the abnormality of the refrigerator 1d shown in FIG. 10 and the duty ratio. In the fourth embodiment, the same parts as those in the first to third embodiments are denoted by the same reference numerals, and differences from the first to third embodiments will be mainly described. As described in the third embodiment, the LED 9 drive circuit using a semiconductor element such as the transistor 20 can quickly turn on / off the LED 9. Thus, for example, when the LED 9 is repeatedly turned on / off at a frequency of several kHz, the LED 9 does not appear to blink due to the illusion of human eyes, and the brightness appears to be reduced.

  As shown in FIG. 10, it is known that the brightness of the LED 9 is proportional to the ratio of the lighting time to the unit time (cycle) (hereinafter referred to as the duty ratio). Therefore, for example, by gradually increasing or decreasing the duty ratio, a visual effect can be obtained in which the brightness of the LED 9 changes little by little. The refrigerator 1d according to the fourth embodiment notifies the abnormality of the refrigerator 1d by gradually changing the brightness of the LED 9 by adjusting the duty ratio. In other words, as shown in FIG. 11, the user is surprised by the sudden lighting / extinguishing by gradually increasing / decreasing the brightness of the LED 9 instead of suddenly turning off the LED 9 from the lighting state. It is possible to notify the abnormality of the refrigerator 1d while suppressing this.

[Adjustment of brightness of refrigerator 1d]
Further, for example, the brightness of the LED 9 may be instructed from the operation panel 21 so that the user of the refrigerator 1d can set the brightness of the LED 9. Thereby, for example, when the place where the refrigerator 1d is installed is bright, the light of the LED 9 is not required so much, so that the brightness of the LED 9 is reduced, and the stored items in the refrigerator compartment 2 are also used. In order to make the inside of the refrigerator compartment 2 brighter, such as organizing, the brightness may be adjusted to be increased. That is, since the refrigerator 1d uses the LED 9, the brightness can be changed by adjusting the duty ratio, so that the power consumption can be reduced.

[Effect of refrigerator 1d]
In addition to the effect of the refrigerator 1a, the refrigerator 1d adjusts the duty ratio so as to gradually increase or decrease the brightness of the LED 9, so that the abnormality of the refrigerator 1d is notified while suppressing the user from being surprised. Can do.

Embodiment 5.
[LED 9 is turned on / off when the left and right doors are open / closed]
FIG. 12 is a front view of refrigerator 1e according to the fifth embodiment. FIG. 13 is an explanatory diagram of illumination when the right door 6A and the left door 6B of the refrigerator 1e shown in FIG. 12 are opened and closed. In the fifth embodiment, the same reference numerals are used for the same parts as in the first to fourth embodiments, and differences from the first to fourth embodiments will be mainly described. The refrigerator 1e has a right door switch 24A for detecting the open / closed state of the right door 6A and a left door switch 24B for detecting the open / closed state of the left door 6B. As shown in FIG. 12, the positions where the right door switch 24A and the left door switch 24B are provided are not particularly limited. For example, the right door switch 24A is provided on the right door 6A, and the left door switch 24B is provided. Is preferably provided on the left door 6B.

  As shown in FIG. 13, by providing the right door switch 24A and the left door switch 24B, when the user opens the right door 6A, the LED 9 that illuminates the right side of the refrigerator compartment 2 is turned on. When the user opens the left door 6B, the LED 9 that illuminates the left side of the refrigerator compartment 2 can be turned on. That is, the user does not always open and close both the right door 6A and the left door 6B. Therefore, if the LED 9 is turned on as described above, the power consumption of the refrigerator 1e can be reduced. Can do. Further, as described in the third embodiment, the LED 9 driving device for the incandescent bulb can be turned on / off by a semiconductor element or the like that is cheaper than the relay 19 such as the transistor 20, and thus the right door 6A. When the door is opened, the right side of the refrigerator compartment 2 is turned on, and when the left door 6B is opened, the left side of the refrigerator compartment 2 is turned on. It has become.

[Effect of refrigerator 1e]
In the refrigerator 1e, in addition to the effect of the refrigerator 1a, when the user opens the right door 6A, the LED 9 that lights the right side of the refrigerator compartment 2 is turned on and the user opens the left door 6B. In this case, since the LED 9 that illuminates the left side of the refrigerator compartment 2 is turned on, power consumption can be reduced.

Embodiment 6 FIG.
[Arrangement of LED 9 on the back side]
FIG. 14 is a front view of refrigerator 1f according to Embodiment 6 of the present invention. In the sixth embodiment, the same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and differences from the first to fifth embodiments will be mainly described. As shown in FIG. 14, the uppermost loading shelf is provided between the rear edge B <b> 2 and the back surface of the refrigerator compartment 2 so as to have a gap through which the light of the LED 9 passes. Thereby, the refrigerator 1f is configured such that the light from the LED 9 spreads from the rear edge B2 of the uppermost stacking shelf 8 to the entire refrigerator compartment 2 from the rear side. The rear edge B2 of the stacking shelf 8 corresponds to an edge on the back side of the stacking shelf 8 when the refrigerator 1 is viewed from the front.

[Effect of refrigerator 1f]
The refrigerator 1f is provided so that the uppermost loading shelf 8 has a gap through which the light of the LED 9 passes between the rear edge B2 and the back of the refrigerator compartment 2, so that the entire refrigerator compartment 2 is easily visible. It has become.

  Needless to say, the contents described in Embodiments 1 to 6 may be combined as appropriate.

  1a Refrigerator, 1b Refrigerator, 1c Refrigerator, 1d Refrigerator, 1e Refrigerator, 1f Refrigerator, 2 Refrigerating Room, 3 Switching Room, 4 Vegetable Room, 5 Freezer Room, 6 Doors, 6A Right Door, 6B Left Door, 7a Drawer Door 7b Drawer door, 7c Drawer door, 8 Loading shelf, 9 LED, 11 Door pocket, 12 Optical axis, 13 Ceiling, 15 Lamp cover, 19 Relay, 20 Transistor, 21 Operation panel, 22 Liquid crystal display, 23 LED for abnormality display, 24A Right door switch, 24B Left door switch, 25 Airway, 26 Outlet.

Claims (7)

A refrigerating room provided with a loading shelf on which stored items are placed;
A plurality of light emitting diodes that are provided on the ceiling side in the refrigeration chamber and radiate light;
The plurality of light emitting diodes are arranged so that their optical axes are directed to the front side of the refrigerator compartment and intersect the uppermost loading shelf. The refrigerator according to claim 1, wherein a lamp cover for expanding a light irradiation range of the plurality of light emitting diodes is provided so as to cover the plurality of light emitting diodes. The said ceiling is inclined so that height may become low along the back side from the front side of the said refrigerator compartment, The said some light emitting diode is provided in the inclined surface. The refrigerator according to 1 or 2. Provided with a control means for judging the operation state in the warehouse,
The said control means alert | reports the driving | running | working state in a warehouse by blinking these light emitting diodes, or changing the light quantity of these light emitting diodes. The refrigerator according to one item. The top shelf is
It is provided so that it may have the clearance gap through which the light of these light emitting diodes passes between the rear edge and the back surface of the said refrigerator compartment. The Claim 1 characterized by the above-mentioned. refrigerator. The plurality of light emitting diodes are:
The refrigerator according to any one of claims 1 to 5, wherein a plurality of rows are provided from the front side to the back side of the refrigerator compartment. The refrigerator according to claim 6, wherein among the plurality of doors that open or shield the refrigerator compartment, the light emitting diodes in the opened row on the door side are caused to emit light.

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