TWI412712B - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having a shelf mechanism facilitated in the takeout of foods etc. in a back space by rotating operation, minimized in an ineffective space, improved in appearance and removal and cleaning performance and improved in safety during operation. <P>SOLUTION: The refrigerator includes a rotating shelf device having the following elements: (1) a pair of rails installed on right and left side walls in a storage compartment; (2) a support shelf provided slidably in the front/back direction on the pair of rails and having a shaft support hole approximately at the center; (3) a rotating tray where notches each having an arc shape around a rotating fulcrum are formed at four corners and a rotating tray shaft is formed approximately at the center; and (4) a fixation ring fixed to the rotating tray shaft and slidably fitted to the shaft support hole of the support shelf. The rotating tray shaft can be made to penetrate the shaft support hole of the support shelf only at a predetermined rotating angle and cannot be made to penetrate the shaft support hole of the support shelf at rotating angles other than a predetermined rotating angle. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

refrigerator

The invention relates to a refrigerator. In particular, there is a technique for improving the usability of the food storage rack in a storage room such as a refrigerating room.

In general, in a refrigerator having a food storage rack on which food is placed in a refrigerator, it is particularly strongly desired to improve the food which can be easily taken out on the food storage rack placed in the uppermost inner space.

Therefore, for example, a rack device for a refrigerator is proposed which is designed such that the food contained in the innermost space comes to the vicinity of the user as the food container is rotated, which is convenient to use and minimizes the dead space ( For example, refer to Patent Document 1).

The refrigerator is composed of the following components: the food storage room has an opening on the front side; the door is an opening and closing food storage room; the frame support seat is disposed on the side wall of the food storage room; and the auxiliary frame is supported by the frame support Supported; the turret is switched to make the rear close to the front opening and is mounted on the upper part of the auxiliary frame.

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 10-153382

However, the rack device of the refrigerator disclosed in Patent Document 1 has an effect of facilitating the removal of the food or the like in the innermost space, but the screw that fixes the nut to the shaft portion from below is rotated in order to rotate it. Sex is difficult and the appearance is worse. Further, since it is difficult for the user to remove the turret, there is a problem that the cleaning property is poor.

Further, in the rack device of the refrigerator described in Patent Document 1, since the rotation axis is moved forward and then rotated in the groove of the fixed auxiliary frame, the amount of protrusion of the auxiliary frame toward the front is increased at a position rotated by 90 degrees. There is a problem that the load acts greatly on the shaft portion and the fear of falling on the storage of the user is increased.

The present invention has been developed in order to solve the problems as described above, and is a refrigerator having a frame mechanism such as a food or the like which is easy to take out the innermost space by a turning operation, and the invalid space is minimized and improved. The appearance and disassembly of the cleaning property, and the safety during operation.

The refrigerator of the present invention includes a turret device having the following components:

(1) a pair of rails disposed on the left and right side walls of the storage compartment;

(2) The support frame is slidably disposed on the pair of rails in the front-rear direction, and has a shaft support hole at the center;

(3) rotating the tray, forming a notch at the four corners according to the arc shape centering on the pivot point, and forming the rotating tray shaft at about the center;

(4) The fixing ring is fixed to the rotating tray shaft, and is slidably fitted to the shaft supporting hole of the supporting frame; the rotating tray shaft adopts the shaft supporting hole of the supporting frame only at a predetermined rotation angle, and is rotated at a predetermined time. The angle of rotation other than the angle cannot pass through the support of the shaft support hole of the support frame.

In the refrigerator of the present invention, the void space can be kept to a minimum, and the appearance and the cleaning property can be improved, and the safety during the operation can be improved.

First embodiment

Fig. 1 is a perspective view showing a first embodiment, and is an exploded perspective view of the turret device 10 of the refrigerator. The turret device 10 includes at least a rotating tray 11 on which food or the like is placed, a support frame 12 for supporting the rotating tray 11 to be rotatable, and a fixing ring 13 for fitting the rotating tray 11 with the support frame 12; 20 is disposed on the left and right side walls of the storage room (for example, the refrigerating chamber), and the support frame 12 slides in the front-rear direction. The rotation of the tray shaft 11a and the shaft support hole 12c will be described later.

Since the configuration of the refrigerator (not shown) other than the turret device 10 is a general configuration, detailed description thereof will be omitted. In the refrigerator, the heat insulating box formed of the steel outer casing, the resin inner box, and the foam heat insulating material filled in between is partitioned into a plurality of chambers, and the opening of each chamber is closed and closed. Door body.

The heat insulating box of the refrigerator is, for example, sequentially partitioned into a refrigerating compartment, an ice making compartment and a switching compartment, a vegetable compartment, and a freezing compartment from the top. These rooms are collectively referred to as storage rooms. Further, these chambers have a refrigerating compartment door body, an ice making compartment door body, a switching compartment door body, a vegetable compartment door body, and a freezing compartment door body that open and close the opening portion.

a partition member that partitions the heat insulating box into a plurality of chambers, a first partition member that partitions the refrigerator compartment, the ice making compartment, and the switching compartment, and a second compartment member that partitions the ice making compartment and the switching compartment, The third compartment member separating the ice making compartment, the switching compartment and the vegetable compartment, and the fourth compartment member separating the vegetable compartment and the freezing compartment.

First, the basic configuration of the turret apparatus 10 will be described with reference to Figs. 2 to 7 . 2 to 7 are views showing a first embodiment, Fig. 2 is a schematic plan view of the turret device 10 at the home position, and Fig. 3 is a schematic perspective view of the turret device 10 at the home position, and Fig. 4 is a turret Schematic perspective view of the device 10 in the forward position, Fig. 5 is a schematic perspective view of the turret device 10 in the forward rotational position, Fig. 6 is a schematic perspective view of the turret device 10 in the forward rotational position, and Fig. 7 is the turret device 10 in the original A schematic perspective view of the positional rotational position.

One pair of rails 20 (guides for guiding the support frame 12 in the front-rear direction) are disposed on both side wall faces of the storage compartment in the refrigerator (the two side wall faces of the inner box), and support the support frame 12 to slide in the front-rear direction freely. The rotating tray 11 is provided on the support frame 12, and the support frame 12 and the rotating tray 11 are coupled by a pivot point which is mutually rotatable (this will be described later). The rotating tray 11 is supported by a fulcrum that is rotatable about the support frame 12. The four corners of the rotating tray 11 have a notch according to an arc shape centering on the pivot point, thereby being rotatable.

In the home position shown in FIGS. 2 and 3, the turret apparatus 10 is housed in a storage compartment (for example, a refrigerating compartment) in the refrigerator without the rotation tray 11 being rotated. Further, the support frame 12 slidable in the front-rear direction along the rail 20 is located at the innermost portion of the storage compartment. At this time, the user can slide the support frame 12 back and forth along the rail 20 as needed. In the second and third figures, the food 30 is placed in the right innermost state of the rotating tray 11.

For example, as shown in Fig. 4, by pulling the rotating tray 11 toward the self along the rail 20, it is easy to pick up and place the food (not shown) on the front side or the center of the rotating tray 11.

However, for example, as shown in Fig. 4, the food product 30 located on the right innermost portion of the rotary tray 11 is difficult to be taken out even if the rotary tray 11 is pulled out toward the self along the rail 20. It is particularly difficult to have other foods on the front side of the foodstuff 30 located on the right innermost side of the rotating tray 11.

The turret apparatus 10 of the present embodiment is supported by a fulcrum that is rotatably supported by the support frame 12. The four corners of the rotary tray 11 have a notch shape in accordance with an arc shape centering on the pivot point, thereby being rotatable. Therefore, for example, in the case where the food item 30 located at the innermost right of the rotary tray 11 is taken out, first, the innermost rotating tray 11 is pulled toward itself (the state of Fig. 4). Next, as shown in Fig. 5, the rotating tray 11 is rotated in either direction (clockwise or counterclockwise, and Fig. 5 shows the clockwise direction).

In the state shown in Fig. 6, when the rotary tray 11 is rotated by 180° from the position shown in Figs. 2 and 3, the state in which the innermost rotating tray 11 is pulled toward the inside (Fig. 4) can be located. The front and rear positional relationship of the food on the rotating tray 11 is reversed.

In particular, the food products 30 located on the right innermost portion of the rotating tray 11 at the home positions shown in FIGS. 2 and 3 are located at the forefront of the rotating tray 11. Thus, the user can easily take out the food 30.

Further, in this state (the food 30 is located at the forefront of the rotating tray 11), as shown in Fig. 7, the support frame 12 can be moved to the rear and housed in the innermost portion of the storage compartment. It is also possible to store the foods stored in the innermost space of the refrigerator, which have a short shelf life, in a space in the refrigerator in their own space. In addition to increasing the convenience of the user, the food can be preserved. The loss caused by the expiration of the term.

Heretofore, an example of taking out the food stored in the right innermost portion of the rotating tray 11 has been described. Conversely, for example, there is a housing space in the rightmost inner portion of the rotating tray 11, and the food can be stored therein, and the same steps can be followed. get on.

Further, in the case where the storage compartment located at the uppermost portion of the refrigerator has a plurality of racks, if the turret apparatus 10 of the present embodiment is used in the uppermost rack, since the take-out property of the food on the inner side of the uppermost rack is improved, Particularly effective.

The turret apparatus 10 of the present embodiment is characterized in that the turret apparatus 10 for improving the take-out property of the food stored in the storage compartment can easily perform the rotation of the rotating tray 11, the support frame 12, and the fixing ring 13. The assembly and disassembly of the rack device 10.

Further, the turret apparatus 10 of the present embodiment is characterized in that the rotating tray 11 does not fall from the support frame 12 even if the fixing ring 13 is poorly attached or the fixing ring 13 is detached during use.

Hereinafter, the features of the turret apparatus 10 of the present embodiment will be specifically described. As described above, the rotary tray 11 has a substantially rectangular shape on the plane (the short side is the depth direction of the storage compartment and the long side is the storage compartment width direction), and the four corners have a shape having a circular arc-shaped notch centered on the pivot point. Further, the center portion of the rotating tray 11 includes a rotating tray shaft 11a (see FIGS. 1 and 8).

8 to 13 are views showing the first embodiment, and Fig. 8 is a view showing a fitting structure of the rotating tray shaft 11a of the rotating tray 11 and the shaft supporting hole 12c of the support frame 12, and Fig. 9 is a view showing FIG. 10 is an enlarged perspective view of the fixing ring 13 of the turret device 10, FIG. 11 is a plan view of the turret device 10, and FIG. 12 is a YY sectional view of the eleventh drawing, and FIG. A side view of the track 20 is seen from the side of the storage compartment.

In Fig. 8, the illustration of the portion other than the rotating tray shaft 11a (including the fitting claw 11b) of the rotating tray 11 is omitted. As shown in FIGS. 8 and 9, the rotating tray shaft 11a protrudes downward from the back surface of the rotating tray 11 (the surface opposite to the surface on which the food is placed), and has a substantially cylindrical shape. Further, a pair of fitting claws 11b having a predetermined width in the circumferential direction and projecting outward in the radial direction are formed on the outer circumference in the vicinity of the lower end portion of the rotary tray shaft 11a. For example, the pair of fitting claws 11b are arranged in the circumferential direction via the fitting claws 11b of about 180 degrees. Here, the length between the front ends of the pair of fitting claws 11b is defined as D1 (Fig. 8). Further, the outer diameter of the rotating tray shaft 11a is defined as D4 (Fig. 8).

The support frame 12 is a rectangle having an overall shape substantially the same as that of the rotary tray 11. Further, the shaft support hole 12c (circle) into which the rotary tray shaft 11a of the rotary tray 11 is inserted is machined at about the center portion. The diameter of the shaft support hole 12c is defined as D2 (Fig. 8).

A pair of substantially semicircular ribs 12a are formed along the edge portion of the shaft support hole 12c into which the rotary tray shaft 11a is inserted. The rib 12a is formed substantially in parallel with the surface on which the rotating tray 11 of the support frame 12 is placed. A pair of approximately semicircular ribs 12a form a pair of notch portions 12b. The length between the pair of notch portions 12b is defined as D3 (Fig. 8).

The length D1 between the front ends of the pair of fitting claws 11b, the diameter D2 of the shaft support hole 12c, the length D3 between the pair of notch portions 12b, and the outer diameter D4 of the rotating tray shaft 11a satisfy the relationship shown below.

D4<D2<D1<D3

The rotating tray 11 is when the position of one of the shaft supporting holes 11c of the support frame 12 is turned to the position of the notch portion 12b by one of the pair of the tray shafts 11a, because it is in the relationship of D1 < D3, D4 < D2. The shaft support hole 12c of the support frame 12 is inserted.

The position at which the pair of fitting claws 11b of the rotary tray shaft 11a substantially coincide with the pair of notch portions 12b of the shaft support hole 12c of the support frame 12 is a position where the linear side of the rotary tray 11 is parallel to the long side of the support frame 12 (rotation angle) 0° or 180°).

The rotary tray shaft 11a of the rotary tray 11 is inserted into the shaft support hole 12c of the support frame 12 at a position where the straight side of the rotary tray 11 is parallel to the long side of the support frame 12 (rotation angle 0 or 180), and the fixing ring is fixed. 13 is fitted to the rotating tray shaft 11a

The fixing ring 13 has a substantially disk shape as a whole, and a pair of semicircular ribs 13a are erected on the inner periphery of the surface on the side of the rotating tray 11 at a predetermined height. When the fixing ring 13 is fitted to the rotating tray 11, the fitting claw 11b of the rotating tray 11 is fixed to the notch portion 13c between the pair of semicircular ribs 13a, and then, by rotating the fixing ring 13, The fitting claw 11b of the rotating tray 11 is accommodated in the claw accommodating portion 13b. The handle 13d when the fixing ring 13 is fixed to the rotating tray shaft 11a is formed at a center portion of the fixing ring 13 (Figs. 10 to 12).

After the rotating tray shaft 11a of the rotating tray 11 is inserted into the shaft support hole 12c of the support frame 12, the fixing ring 13 is fixed to the rotating tray shaft 11a of the rotating tray 11 by the elastic force of the resin. First, one of the rotating tray shafts 11a inserted into the shaft support hole 12c of the support frame 12 is fixed to the notch portion 13c of the fixing ring 13 by the pair of fitting claws 11b. Then, when the fixing ring 13 is rotated in the clockwise direction, for example, the pair of fitting claws 11b pass over one end (opening side) of one of the circumferential directions of the claw accommodating portion 13b by the elastic force of the resin, and enters. The inside of the claw accommodating portion 13b is fitted, and the rotating tray 11 is fitted to the fixing ring 13 to be fixed (Figs. 10 to 12).

The material of the fixing ring 13 is POM (polyaldehyde). POM (polyaldehyde) is a polymer having an oxygen-containing oxymethylene structure in a unit structure. Since the polyaldehyde-based amorphous portion is mixed with the crystalline portion, it is an engineering plastic excellent in strength, elastic modulus, and impact resistance. Moreover, since it is excellent in sliding characteristics, it is also used as a bearing element.

Since the fixing ring 13 slides on the shaft support hole 12c of the support frame 12 with the rib 13a as a shaft, POM (polyacetal) excellent in sliding characteristics is preferably used (Fig. 11 and Fig. 12).

The material for rotating the tray 11 and the support frame 12 is PS (polystyrene resin). PS (polystyrene resin) is excellent in transparency. In the storage compartment of the refrigerator, there are a plurality of racks, and in the case where the lighting device is located at the upper portion, in order to brighten the entire storage compartment, the transparency of the rack through which the light of the illuminating device is transmitted is important. Therefore, PS (polystyrene resin) excellent in transparency is suitable for rotating the material of the tray 11 and the support frame 12.

A pair of rails 20 disposed on the left and right sides of the storage compartment and sliding the support frame 12 are formed as shown in Fig. 13, and a stopper 20a is formed at the front of each rail 20 so as not to pull the turret device 10 to itself (support When the shelf 12) falls to the storage compartment.

As shown above, the turret apparatus 10 of the present embodiment includes a rotating tray 11 for placing foods and the like, a support frame 12 rotatably supporting the rotating tray 11, and a fixing ring 13 for aligning the machine 11 and the support frame 12 is fitted; and a pair of rails 20 are disposed on the left and right sides of the storage compartment and the support frame 12 is slid, so that the rotation center of the rotation of the rotation tray 11 is formed at about the center of the support frame 12, and because the rotation tray 11 is based thereon The circular arc shape with the pivot point as the center pivots the four corners of the tray 11 to form a substantially square shape of the notch, so that the void space of the corner portion can be minimized.

In the turret apparatus 10 of the present embodiment, the fitting claws 11b provided on the rotating tray shaft 11a of the rotating tray 11 are fitted and fixed to the ribs 13a of the fixing ring 13 by the elastic force of the resin. Therefore, the assembly of the turret device 10 is easy, and the disassembly (decomposition) of the user is also easy. Further, since the fixing ring 13 is also made of a resin (POM), the degree of freedom in shape, color, and the like is improved, and the appearance can be improved.

Further, the turret apparatus 10 of the present embodiment is a fitting structure that cannot pass when the rotating tray shaft 11a of the rotating tray 11 is outside the shaft supporting hole 12c of the support frame 12 at a predetermined rotation angle (0° or 180°). . Therefore, even if the mounting failure of the fixing ring 13 occurs or the fitting claw 11b is deviated during use, the rotating tray 11 cannot be easily dropped, and the safety can be improved.

Second embodiment

Fig. 14 and Fig. 15 are views showing a second embodiment, Fig. 14 is a schematic front view showing the refrigerator compartment 101 of the refrigerator 100, and Fig. 15 is a view showing the interior lighting of the refrigerator compartment 101 of the refrigerator 100. Decompose the perspective view.

The refrigerator 100 is formed, for example, in the refrigerator compartment 101 at the uppermost portion of the heat insulating box. Although the refrigerator compartment 101 (storage room) includes a plurality of racks, the example in which the turret apparatus 10 of the first embodiment is provided at the uppermost portion will be described.

In the refrigerating compartment 101 (storage room), the illuminating device 200 irradiated in the refrigerating compartment 101 is disposed at the top of the refrigerating compartment 101. In the illuminating device 200, as shown in Fig. 13, an LED assembly substrate 202 of LEDs 201 (light emitting diodes) in which a plurality of single wavelengths or a plurality of wavelengths are combined in the front-rear direction of the refrigerating chamber 101 is chilled, for example, from the front. In the case of the chamber 101, one of the left and right sides is disposed substantially symmetrically on both sides of the center line. Further, the LED assembly board 202 in which a plurality of LEDs 201 are assembled is disposed and fixed to the top surface of the refrigerating chamber 101 with the illumination cover 203 and the lid attachment member 204. The distance between the left and right LED assembly substrates 202 is set to L2 (Fig. 12).

The POM (polyaldehyde) which is a material of the fixing ring 13 is excellent in sliding properties, but is inferior in transparency to PS (polystyrene resin). Therefore, the light from the LED 201 having a high linearity of light waves is shielded. Therefore, the LED assembly substrate 202 (here, two) in the illumination device 200 needs to be arranged such that the light from the LED 201 is shielded by the fixing ring 13 and the entire refrigerator compartment 101 is darkened.

For example, in the case where the LED assembly substrate 202 is located near the center of the refrigerating chamber 101, the light from the LED 201 is shielded by the fixing ring 13 located directly under the LED assembly substrate 202, and becomes darker than the space below the turret device 10.

The outer diameter of the fixing ring 13 is set to L1. The outer diameter L1 of the fixing ring 13 is, for example, about 70 mm to ψ100 mm. On the other hand, the interval L2 of the LED assembly board 202 which is disposed symmetrically with respect to the center line (refrigeration chamber) on the top surface of the refrigerating chamber 101 is at least three times larger than the outer diameter L1 of the fixing ring 13 of the turret apparatus 10. The configuration is better. That is, 3 × L1 ≦ L2.

In this manner, by arranging the LED assembly substrate 202, the ratio of the light blocked by the fixing ring 13 to the light of the LED 201 having high linearity from the light wave is reduced. Therefore, the illuminance of the other frame surfaces disposed under the turret device 10 is ensured, and the appearance is improved.

Further, by setting the outer diameter L1 of the fixing ring 13 to about mm70 mm to ψ100 mm, even if the food is placed on the rotating tray 11 with a biased load, the angular position at the 90° in the middle of the rotation can be reduced. The stress generated by the rotating portion (the rotating tray shaft 11a) can also have a structure that is sufficiently likely to break the resin material (PS, POM) forming the rotating tray 11 or the fixing ring 13, and the safety can be improved.

10. . . Turntable device

11. . . Rotating tray

11a. . . Rotating the tray shaft

11b. . . Fitting claw

12. . . Support frame

12a. . . rib

12b. . . Notch

12c. . . Shaft support hole

13. . . M

13a. . . rib

13b. . . Claw accommodating part

13c. . . Notch

13d. . . handle

20. . . track

20a. . . Stopper

100. . . refrigerator

101. . . Cold room

200. . . Lighting device

201. . . led

202. . . LED assembly substrate

203. . . Lighting cover

204. . . Cover mounting member

Fig. 1 is a view showing the first embodiment, and is an exploded perspective view of the turret apparatus 10.

Fig. 2 is a view showing the first embodiment, and is a schematic plan view showing the turret apparatus 10 at its original position.

Fig. 3 is a view showing the first embodiment, and is a schematic perspective view of the turret apparatus 10 at the original position.

Fig. 4 is a view showing the first embodiment, and is a schematic perspective view of the turret apparatus 10 at the forward position.

Fig. 5 is a view showing the first embodiment, and is a schematic perspective view of the turret apparatus 10 at a forward rotational position.

Fig. 6 is a view showing the first embodiment, and is a schematic perspective view of the turret apparatus 10 at a forward rotational position.

Fig. 7 is a view showing the first embodiment, and is a schematic perspective view showing a rotational position of the turret apparatus 10 at the home position.

Fig. 8 is a view showing the first embodiment, showing a fitting structure of the rotating tray shaft 11a of the rotating tray 11 and the shaft supporting hole 12c of the support frame 12.

Fig. 9 is a view showing the first embodiment, showing a shaft fitting structure of the turret device 10.

Fig. 10 is a view showing the first embodiment, and is an enlarged perspective view of the fixing ring 13.

Fig. 11 is a view showing the first embodiment, and is a plan view of the turret apparatus 10.

Fig. 12 is a Y-Y sectional view of Fig. 11.

Fig. 13 is a view showing the first embodiment, and is a side view of the rail 20 as seen from the side of the storage compartment.

Fig. 14 is a view showing a second embodiment, and is a schematic front view showing the refrigerator compartment 101 of the refrigerator 100.

Fig. 15 is a perspective view showing the structure of the indoor illumination of the refrigerator compartment 101 of the refrigerator 100, showing the second embodiment.

10. . . Turntable device

11. . . Rotating tray

11a. . . Rotating the tray shaft

12. . . Support frame

12c. . . Shaft support hole

13. . . M

20. . . track

Claims (8)

A refrigerator comprising: a turret device having the following components: (1) a pair of rails disposed on left and right side walls of the storage compartment; and (2) a support frame slidably disposed in the front-rear direction On the track, and having a shaft support hole at a center, the shaft support hole has a notch; (3) rotating the tray, forming a notch at the four corners according to a circular arc shape centering on the pivot point, and rotating the tray shaft Formed at approximately the center, the outer periphery of the rotating tray shaft near the lower end portion includes a fitting claw that protrudes outward in the radial direction by a predetermined length; and (4) a fixing ring fixed to the rotating tray shaft, And slidingly fitting the shaft support hole of the support frame; the rotating tray shaft adopting the shaft support hole of the support frame only when the fitting claw is aligned with the notch portion, and the fitting claw is In the case where the notch portion is not aligned, the rotating tray shaft cannot pass through the shaft supporting hole of the support frame. The refrigerator according to claim 1, wherein the outer periphery of the rotating tray shaft near the lower end portion includes a plurality of fitting claws, and the shaft support hole has a plurality of notches. The refrigerator according to claim 2, wherein the fitting claw and the notch are formed at intervals of 180 in the circumferential direction. The refrigerator according to claim 1, wherein the fixing ring is fixed to the rotating tray shaft by elastic fitting of a resin. The refrigerator according to claim 1, further comprising an LED assembly substrate which is disposed on a top surface of the storage chamber at a predetermined interval in a left-right width direction of the storage chamber, and assembles an LED (light emitting diode) body). The refrigerator according to claim 5, wherein the LED assembly substrate is disposed on the right and left sides at an interval of three times or more of an outer diameter of the fixing ring. A refrigerator according to claim 5, wherein the refrigerator is provided with a pair of the LED assembly substrates. The refrigerator according to any one of claims 1 to 7, wherein the outer diameter of the fixing ring is set to ψ70 mm to ψ100 mm.