JP2023007330A - flat open showcase - Google Patents

Abstract

To provide a flat open showcase capable of inhibiting dew condensation from being generated on an undersurface of a display shelf provided above a case body.SOLUTION: A flat open showcase 1 includes: a case body 2 that is formed in a box shape with an open top face, stores goods inside, and has the inside cooled by an air curtain formed by cool air; and a display shelf 5, provided above the case body 2, on which articles including goods may be displayed. The display shelf 5 includes a shelf body 51 made of synthetic resin or the like and a smooth and glossy metal plate 52 attached to the lower side of the shelf body 51. The undersurface of the display shelf 5 is made of smooth and glossy metal.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat open showcase capable of displaying refrigerated or frozen commodities while cooling them with an open upper surface.

Patent Document 1 describes an example of this type of flat open showcase. The showcase described in Patent Document 1 is formed in a box shape with an open top (top open), and includes a product storage section covered with an air curtain of cool air, and a shelf supported above the product storage section by a pillar. with a plate.

Japanese Unexamined Patent Application Publication No. 2004-81418

In the showcase described in Patent Literature 1, dew condensation occurs on the lower surface of the shelf board, and there is a risk of wetting the products below the shelf board. In addition, since flat open showcases are open at the top, they are susceptible to air currents generated by the air conditioning inside the store, that is, external air currents, and the cooling performance may be reduced depending on the installation location. There was also

SUMMARY OF THE INVENTION Accordingly, the present invention provides a flat open showcase capable of suppressing condensation on the lower surface of a display shelf (corresponding to a shelf board) provided above a case body (corresponding to a product storage section). for the purpose. Another object of the present invention is to provide a flat open showcase that can suppress deterioration in cooling performance by reducing the influence of external air currents as compared with conventional ones.

According to one aspect of the present invention, a flat open showcase is formed in a box-like shape with an open upper surface, and includes a case main body in which products are accommodated and the inside is cooled by forming an air curtain of cold air; A display shelf is provided above the case body and on which articles including merchandise can be displayed. The lower surface of the display shelf is composed of smooth or shiny metal.

Further, according to another aspect of the present invention, the flat open showcase is formed in a box shape with an open top, stores products therein, and cools the interior by forming an air curtain with cool air. a display shelf provided above the case body on which articles including merchandise can be displayed; and an air current directed from the outside toward the inside of the case body provided near the display shelf. and an air guide for straightening the flow near the lower surface.

ADVANTAGE OF THE INVENTION According to this invention, the flat open showcase which can suppress that dew condensation generate|occur|produces on the lower surface of the display shelf provided above the case main body can be provided. Further, according to the present invention, it is possible to provide a flat open showcase that can reduce the influence of external air currents and suppress deterioration in cooling performance.

1 is a schematic perspective view of a flat open showcase according to a first embodiment; FIG. 1 is a schematic cross-sectional view of a flat open showcase according to a first embodiment; FIG. FIG. 4 is a diagram showing a modification of the flat open showcase according to the first embodiment; FIG. 5 is a schematic perspective view of a flat open showcase according to a second embodiment; FIG. 5 is a schematic cross-sectional view of a flat open showcase according to a second embodiment; FIG. 10 is a top view of the main parts of the flat open showcase according to the second embodiment, and mainly shows the display shelf and the air guide; The analysis results of the airflow in the flat open showcase according to the second embodiment are shown, (a) is the analysis result when no air guide is provided, and (b) is the analysis when the air guide is provided. This is the result. FIG. 10 is a diagram showing a modification of the flat open showcase according to the second embodiment; FIG. 10 is a diagram schematically showing a flat open showcase according to a second embodiment and a modification thereof;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

The flat open showcase according to the embodiment is mainly installed in retail stores such as convenience stores and supermarkets.

[First embodiment]
1 and 2 show a flat open showcase 1 according to the first embodiment. FIG. 1 is a schematic perspective view of a flat open showcase 1 according to the first embodiment, and FIG. 2 is a lateral cross-sectional view (cross-sectional view perpendicular to the longitudinal direction) of the flat open showcase 1 according to the first embodiment. is.

1 and 2, a flat open showcase 1 has a case body 2 with an open top. The case body 2 is formed in a rectangular box shape, and has two longitudinal sides (a first longitudinal side 2a and a second longitudinal side 2b) and two short sides. The inside of the case main body 2 constitutes a storage chamber 3 in which commodities are displayed and stored. A transparent windshield 4 (four windshields 4 in this case) made of an acrylic plate or the like and having a predetermined height is attached to the upper portion of the case body 2 so as to surround the storage chamber 3 .

Above the case body 2, a display shelf 5 is provided on which articles including merchandise can be displayed. That is, the flat open showcase 1 has a display shelf 5 provided above the case body 2 . The display shelf 5 is formed in a rectangular shape when viewed from above. The display shelf 5 is supported by a pair of pillars 6 spaced apart in the longitudinal direction of the case body 2 and positioned above the substantially central portion of the case body 2 in the lateral direction. Although not particularly limited, in this embodiment, the length of the display shelf 5 in the longitudinal direction is approximately equal to the length of the case body 2 in the longitudinal direction, and the length of the display shelf 5 in the width direction is equal to the length of the case body 2 in the width direction. It is smaller (shorter) than the length in the hand direction.

A deck pan 31 , a bottom duct 32 , a suction duct 33 and a blowout duct 34 are provided inside the case body 2 .

The deck pan 31 is installed on the lower side inside the case body 2 . The top surface of the deck pan 31 constitutes the inner bottom surface of the storage chamber 3 . A bottom duct 32 is provided below the deck pan 31 . A blower 41 and a cooler 42 are arranged in the bottom duct 32 .

The suction duct 33 is provided along the first longitudinal inner side surface 2c corresponding to the first longitudinal side surface 2a among the two longitudinal inner side surfaces (the first longitudinal inner side surface 2c and the second longitudinal inner side surface 2d) of the case body 2. It is The suction duct 33 has a suction port 33 a at its upper portion and communicates with one end of the bottom duct 32 at its lower portion.

The blowout duct 34 is provided along the second longitudinal inner side surface 2d corresponding to the second longitudinal side surface 2b of the two longitudinal inner side surfaces (the first longitudinal inner side surface 2c and the second longitudinal inner side surface 2d) of the case body 2. It is The blowout duct 34 has a blowout port 34a facing the suction port 33a at its upper portion, and communicates with the other end of the bottom duct 32 at its lower portion.

In the case body 2 of the flat open showcase 1, when the blower 41 and the cooler 42 are driven, the air in the case body 2 is sucked into the suction duct 33 through the suction port 33a. Air drawn into the suction duct 33 passes through the suction duct 33 into the bottom duct 32 and is cooled by the cooler 42 as it passes through the bottom duct 32 . The cooled air further passes through the blowout duct 34 and is blown out from the blowout port 34a toward the suction port 33a (see the arrow in FIG. 2). As a result, an air curtain of cool air is formed in the upper portion of the case body 2, and the inside of the case body 2, that is, the storage chamber 3 can be cooled by this air curtain. Therefore, in the flat open showcase 1 , refrigerated products and frozen products that require cooling (including cold storage) are displayed and stored in the storage chamber 3 .

On the other hand, on the upper surface of the display shelf 5 above the case body 2, various items including room temperature products that do not require cooling can be displayed. That is, in the present embodiment, the display shelf 5 constitutes a so-called normal temperature shelf (also referred to as a non-cooled shelf).

Here, the lower surface of the display shelf 5 faces the cooled (cold) storage chamber 3 . For this reason, dew condensation is likely to occur on the lower surface of the display shelf 5 . If dew condensation occurs on the lower surface of the display shelf 5, there is a risk that the products positioned below the display shelf 5 will get wet. Therefore, it is necessary to prevent condensation from occurring on the lower surface of the display shelf 5 . For example, by attaching a heater to the display shelf 5 to heat the lower surface of the display shelf 5 , it is possible to prevent condensation from occurring on the lower surface of the display shelf 5 . However, doing so causes an increase in power consumption, which is not preferable. Therefore, in this embodiment, the following countermeasures are taken for the display shelf 5 .

In this embodiment, the lower surface of the display shelf 5 is made of smooth and glossy metal. Specifically, in this embodiment, the display shelf 5 includes a shelf body 51 made of synthetic resin or the like, and a smooth and glossy metal plate 52. The smooth and glossy metal plate 52 serves as the shelf. It is attached to the lower side of the main body 51 . The shelf body 51 can be formed hollow, for example. The smooth and glossy metal plate 52 may be, for example, a mirror-finished stainless steel plate. However, it is not limited to this. The material and shape of the shelf body 51 can be arbitrarily selected. Moreover, the lower surface of the display shelf 5 may be composed of a smooth and glossy metal, and for example, the lower portion of the shelf body 51 may be covered with a smooth and glossy metal sheet. In addition, although it is preferable that the entire or most of the lower surface of the display shelf 5 is made of smooth and glossy metal, it is not necessarily so, and the display shelf 5 is made of smooth and glossy metal. can be appropriately set for each flat open showcase 1 .

According to the flat open showcase 1 according to the first embodiment, the following effects are obtained.

In the flat open showcase 1 according to the first embodiment, since the lower surface of the display shelf 5 facing the storage chamber 3 is made of a smooth and glossy metal, heat radiation from the display shelf 5 is suppressed. be done. Therefore, the temperature drop of the lower surface of the display shelf 5 is suppressed. In addition, it is possible to remove stains on the lower surface of the display shelf 5 by relatively simple cleaning. For this reason, it is possible to maintain a state in which no so-called “nucleus” exists on the lower surface of the display shelf 5 , and water droplets that cause dew condensation are less likely to adhere to the lower surface of the display shelf 5 . Therefore, formation of dew condensation on the lower surface of the display shelf 5 can be suppressed.

In addition, since the occurrence of dew condensation on the lower surface of the display shelf 5 is suppressed, for example, as shown in FIG. can be installed relatively easily on the underside of the Here, two lighting devices 20 extending in the longitudinal direction are installed on the lower surface of the display shelf 5 . By installing the lighting device 20 on the lower surface of the display shelf 5 in this way, the visibility of the products in the storage room 3 can be improved without hindering the customer's access to the products in the storage room 3. . In this case, it is preferable that the control board 21 on which a control circuit for controlling power supply to the lighting device 20 is mounted is arranged inside the display shelf 5 (shelf main body 51). In this way, the heat generated by the electronic components mounted on the control board 21 can be used to heat the lower surface of the display shelf 5, so that condensation on the lower surface of the display shelf 5 can be further suppressed.

[Second embodiment]
4 and 5 show a flat open showcase 10 according to a second embodiment. FIG. 4 is a schematic perspective view of the flat open showcase 10 according to the second embodiment, and FIG. 5 is a cross-sectional view of the flat open showcase 10 according to the second embodiment (sectional view orthogonal to the longitudinal direction). is. Components common to the flat open showcase 1 according to the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. The configuration will be explained.

As mentioned above, flat open showcases are susceptible to external air currents caused by the air conditioning inside the store because the top surface is open, and the cooling performance may be reduced depending on the installation location. was there. Such problems are considered to be mainly caused by external air currents reaching the air curtain formed on the top of the case and/or flowing in the vicinity of the air curtain, causing turbulence in the air curtain.

That is, of the external air currents, it is the air currents that may reach and/or flow in the vicinity of the air curtain that are of concern. In the case of the flat open showcase 10 according to this embodiment having the windshield 4 and the display shelf 5, the problem lies in the direction from diagonally above the case body 2 toward the inside of the case body 2 (that is, the storage chamber 3). Airflow, in particular, obliquely downward direction (block arrow in FIG. 5, (see open block arrows).

Therefore, if the air current directed toward the interior of the case body 2 (accommodating chamber 3) (air current obliquely downward) is properly treated, the air curtain will be disturbed due to the influence of the external air current, and the cooling performance of the flat open showcase 1 will be reduced. can be suppressed.

As a result of earnest experiments, the inventors have found that an air guide is arranged near the display shelf 5, and the air flow directed to the inside of the case main body 2 (accommodation chamber 3) is directed to the display shelf 5 by the air guide. It was found that by rectifying the air so as to flow in the vicinity of the lower surface of the , it is possible to suppress disturbance of the air curtain and, in turn, deterioration of the cooling performance of the flat open showcase 1 . Based on this knowledge, the flat open showcase 10 according to the second embodiment has an air guide arranged near the display shelf 5 . The air guide will be described below.

In the present specification, "rectifying the airflow toward the inside of the case body 2 (accommodation chamber 3) so that the airflow flows in the vicinity of the lower surface of the display shelf 5" mainly means the inside of the case body 2 (accommodation chamber 3). It means directing the airflow towards the chamber 3) closer to the underside of the shelf 5 than it would otherwise (ie without the air guide).

FIG. 6 is a top view of the main parts of the flat open showcase 10 according to the second embodiment, and mainly shows the display shelf 5 and the air guide. 6 indicates the outer shape of the case body 2. As shown in FIG.

4 to 6, the flat open showcase 10 according to the second embodiment has two air guides (first air guide 7A and second air guide 7B). The first air guide 7A is positioned at the first longitudinal edge of the display shelf 5 on the first longitudinal side surface 2a side of the display shelf 5 (the first longitudinal edge 5a and the second longitudinal edge 5b). 5a and along the first longitudinal edge 5a. The second air guide 7B is positioned at the second longitudinal edge of the display shelf 5 on the second longitudinal side surface 2b side of the display shelf 5 (the first longitudinal edge 5a and the second longitudinal edge 5b). 5b and along the second longitudinal edge 5b.

In this embodiment, the first air guide 7A and the second air guide 7B are formed as rectangular plate-like members having substantially the same length as the display shelf 5 in the longitudinal direction. That is, the first air guide 7A and the second air guide 7B have the same shape. Also, the first air guide 7A and the second air guide 7B have a plurality of mounting portions 71 for detachably mounting themselves to the display shelf 5 using fasteners (not shown) such as screws. .

The first air guide 7A is positioned at a predetermined distance from the first longitudinal edge 5a of the display shelf 5, and gradually moves from the upper side toward the lower side toward the display shelf 5 (the first longitudinal edge 5a thereof). It is attached to the display shelf 5 via a plurality of attachment portions 71 in a state inclined so as to approach. In addition, the second air guide 7B is located at a predetermined distance from the second longitudinal edge 5b of the display shelf 5, and gradually moves from the upper side to the lower side toward the display shelf 5 (the second longitudinal edge 5b thereof). It is attached to the display shelf 5 via a plurality of attachment portions 71 in a state inclined so as to approach. Here, in this embodiment, the lower portion of the first air guide 7A and the lower portion of the second air guide 7B are located at substantially the same height as the display plate 5 (lower surface) (see FIG. 5).

In the present embodiment, the first air guide 7A and the second air guide 7B are mainly made of synthetic resin, and in order to prevent the inside of the case body 2 from becoming dark, at least a part, preferably all of them are translucent. have a sexuality. In other words, the first air guide 7A and the second air guide 7B are at least partially, preferably entirely made of transparent resin or translucent resin.

Next, operation of the flat open showcase 10 according to the second embodiment will be described with reference to FIG. In FIG. 7, a plurality of PET bottle beverages are placed on the upper surface of the display shelf 5 .

FIG. 7 shows a flat open showcase in the case where an air flow is generated outside the first longitudinal side surface 2a of the case body 2 and obliquely downward (block arrow) toward the inside of the case body 2 (accommodation chamber 3) from above. 10 shows an analysis result of the airflow in FIG. FIG. 7(a) shows the analysis results of the flat open showcase 10 with no air guide, and FIG. 7(b) shows the analysis results of the flat open showcase 10 with the air guide. The shading in the drawing indicates the magnitude (speed) of the velocity of the airflow.

As shown in FIG. 7(a), in the case of a flat open showcase 10 without an air guide, most of the airflow is directed downward away from the lower surface of the display shelf 5, in other words, in an air curtain. It flows in a nearby place (see A1). It is considered that this is caused by separation of the air flow at the first longitudinal edge 5 a of the display shelf 5 . Since most of the airflow flows near the air curtain, the upper surface of the air curtain is greatly disturbed (see B1), and the outside air is greatly entrained on the blowing side (see C1). As a result, the cooling performance of the flat open showcase is lowered and excessive frost buildup occurs on the suction side.

On the other hand, in the case of the flat open showcase 10 according to the embodiment provided with the air guide, as shown in FIG. )), it flows at a location near the lower surface of the display shelf 5, in other words, at a location away from the air curtain, and its speed is high (see A2 part). This is probably because the first air guide 7</b>A suppresses separation of the airflow at the first longitudinal edge 5 a of the display shelf 5 and allows the airflow to flow along the lower surface of the display shelf 5 . Since the air current flows away from the air curtain, the turbulence on the upper surface of the air curtain is small (see part B2), and the outside air entrainment on the blowing side is also small compared to the case where the air guide is not provided (part C2 reference). Also, a relatively thick layer of slow flow is formed just above the air curtain (see D2).

In addition, when an airflow is generated outside the second longitudinal side surface 2b of the case body 2 and obliquely downward (see the white block arrow in FIG. 2) toward the inside of the case body 2 (accommodation chamber 3) from above. Although the description is omitted, basically, the first longitudinal edge portion 5a in the above description should be read as the second longitudinal edge portion 5b, and the first air guide 7A should be read as the second air guide 7B.

According to the flat open showcase 10 according to the second embodiment, the following effects are obtained in addition to the same effects as the flat open showcase 1 according to the first embodiment.

A flat open showcase 10 according to the second embodiment includes a first air guide 7A provided along the first longitudinal edge 5a of the display shelf 5 and separated from the first longitudinal edge 5a of the display shelf 5. and a second air guide 7B spaced from and along the second longitudinal edge 5b. The first air guide 7A and the second air guide 7B direct the airflow from the outside toward the inside (accommodation chamber 3) of the case body 2 so that the airflow flows in the vicinity of the lower surface of the display shelf 5, in other words, the airflow is configured to be rectified so as to flow along the lower surface of the display shelf 5. Therefore, the turbulence due to the influence of the air current outside the air curtain formed on the upper part of the case body 2 is suppressed, and the deterioration of the cooling performance can be suppressed.

Here, in the store, generally, air currents are directed obliquely downward (see block arrows in FIG. 5) toward the inside of the case body 2 (accommodation chamber 3) from above and outside the first longitudinal side surface 2a of the case body 2. , and an obliquely downward airflow (see the white block arrow in FIG. 5) from above toward the inside of the case body 2 (accommodation chamber 3) outside the second longitudinal side surface 2b of the case body 2. very few. Therefore, the first air guide 7A or the second air guide 7B may be selectively provided according to the generated airflow, and the flat open showcase 10 does not necessarily have both the first air guide 7A and the second air guide 7B. you don't have to. However, it is more convenient for the flat open showcase 10 to have both the first air guide 7A and the second air guide 7B, because it is possible to cope with changes in air currents in the store.

In this embodiment, the case main body is formed in a rectangular box shape with an open top, and the display shelf is formed in a rectangular shape when viewed from above. The air guides (first air guide 7A, second air guide 7B) are separated from the longitudinal edges (first longitudinal edge 5a, second longitudinal edge 5b) of the display shelf 5 and along the longitudinal edges. are provided. However, it is not limited to this. The air guide is spaced apart from and along a predetermined edge of the display shelf, and straightens the airflow directed from the outside toward the inside of the case main body so that the airflow flows near the lower surface of the display shelf. It is sufficient if it is configured to

In addition, in this embodiment, the lower surface of the display shelf 5 is made of smooth and glossy metal, like the flat open showcase 1 according to the first embodiment. That is, the display shelf 5 includes a shelf body 51 made of, for example, synthetic resin, and a smooth and glossy metal plate 52 attached to the bottom side of the shelf body 51 . However, it is not limited to this. As shown in FIG. 8 as a modification, the display shelf 5 may be made mainly of synthetic resin, and the lower surface of the display shelf 5 may not be made of smooth and glossy metal (smooth and glossy metal). plate 52 may not be included). This is because the occurrence of dew condensation on the lower surface of the display shelf 5 can be suppressed by the airflow flowing along the lower surface of the display shelf 5 . However, it goes without saying that dew condensation on the lower surface of the display shelf 5 can be more effectively prevented if the lower surface of the display shelf 5 is made of smooth and glossy metal.

Here, in the case of the modification shown in FIG. 8, in order to prevent the inside of the case body 2 from becoming dark, the display shelf 5 can be formed so that at least a portion, preferably the entirety thereof, has translucency. . In other words, the display shelf 5 can be at least partially, preferably entirely formed of transparent resin or translucent resin. If all or most of the display shelf 5 is translucent, a part of the upper surface of the display shelf 5 may be provided with a non-display portion where no products are displayed. The non-display part is formed, for example, as a curved surface that protrudes upward, and preferably, a plurality of non-display parts are provided separated from each other. In this way, light can be provided to the inside (accommodation chamber 3) of the case body 2 through the non-display portion, so darkening of the inside (accommodation chamber 3) of the case main body 2 can be further suppressed.

Although not shown, in the case of the modification shown in FIG. 8, an LED light or the like for illuminating the inside of the case body 2 (accommodation chamber 3) is provided at the lower end of the first air guide 7A and the second air guide 7B. A compact lighting component may be attached. This is to prevent deterioration of the visibility of the inside of the case body 2 (accommodation chamber 3) due to the provision of the first air guide 7A and the second air guide 7B.

In the above-described embodiment, the first air guide 7A and the second air guide 7B have a plurality of mounting portions 71 and are detachably attached to the display shelf 5 via the plurality of mounting portions 71. . However, the present invention is not limited to this, and the first air guide 7A and/or the second air guide 7B may be formed integrally with the display shelf 5 (attached in a non-detachable manner). Alternatively, the first air guide 7A or the second air guide 7B and the plurality of mounting portions 71 are separately formed, and the posture of the first air guide 7A or the second air guide 7B with respect to the plurality of mounting portions 71 and the display shelf 5 may be configured to be changeable. In the latter case, it is possible to adjust the direction and angle of the first air guide 7A and/or the second air guide 7B according to the actually generated airflow.

In this embodiment, as in the flat open showcase 1 according to the first embodiment, even if a lighting device (for example, an LED lighting device) 20 that illuminates the storage chamber 3 is installed on the lower surface of the display shelf 5 In this case, the control board 21 on which the control circuit of the lighting device 20 is mounted is preferably arranged inside the display shelf 5 (shelf main body 51).

Furthermore, in the flat open showcase 10 according to the second embodiment, it is sufficient that the airflow directed from the outside toward the inside (accommodation chamber 3) of the case body 2 can be rectified so that the airflow flows in the vicinity of the lower surface of the display shelf 5. The shape, arrangement and number of guides can be arbitrarily set. Some of the configurations that can be set will be described below as modifications of the flat open showcase 10 according to the second embodiment with reference to FIG. FIG. 9 schematically shows a cross section of a flat open showcase, FIG. 9(a) is a diagram showing a flat open showcase 10 according to the second embodiment, and FIGS. f) is a diagram showing a modification of the flat open showcase 10 according to the second embodiment.

(Modification 1)
FIG. 9B shows Modification 1. FIG. In Modification 1, a plurality of (here, two) first air guides 7A are horizontally spaced from each other, and a plurality of (here, two) second air guides 7B are horizontally spaced from each other. They are spaced apart. In the case of modification 1, it becomes possible to rectify more airflows than in the above-described embodiment.

(Modification 2)
FIG. 9C shows Modification 2. FIG. In Modified Example 2, the lower portion of the first air guide 7A and the lower portion of the second air guide 7B are positioned below the lower surface of the display shelf 5 . In this case, the lower portion of the first air guide 7A and the lower portion of the second air guide 7B may be positioned outside the display shelf 5 or may be positioned below the display shelf 5 . In the case of Modified Example 2, separation of the airflow at the longitudinal edges 5a and 5b of the display shelf 5 is further suppressed as compared with the above-described embodiment, and the airflow flows along the lower surface of the display shelf 5. It is possible to further improve the effect.

(Modification 3)
FIG. 9(d) shows a third modification. In Modified Example 3, the entire first air guide 7A and the entire second air guide 7B are positioned below the display shelf 5 . In the case of modification 3, while obtaining the same effect as the above-described embodiment, there is an advantage that customers can easily pick up the products placed on the upper surface of the display shelf 5 compared to the above-described embodiment.

(Modification 4)
FIG. 9E shows Modification 4. FIG. In Modified Example 4, the first air guide 7A and the second air guide 7B are curved so that the lower side wraps around below the display shelf 5 . In this case, as indicated by broken lines in FIG. 8(e), a plurality of first air guides 7A are spaced apart from each other, and a plurality of second air guides 7B are spaced apart from each other. may In the case of the modification 4, as in the case of the modification 2, the separation of the airflow at the longitudinal edges 5a and 5b of the display shelf 5 is further suppressed as compared with the above-described embodiment. Since it flows along, it is possible to further improve the effect.

(Modification 5)
FIG. 9(f) shows a fifth modification. In Modified Example 5, the first air guide 7A located upstream of the obliquely downward (see block arrow) airflow from the outside toward the inside (accommodation chamber 3) of the case main body 2 is located at the upper portion, as in the above-described embodiment. It is arranged so as to gradually approach the display shelf 5 (the first longitudinal edge 5a thereof) from the side toward the lower side. On the other hand, the second air guide 7B located downstream of the obliquely downward airflow from the outside toward the inside (accommodation chamber 3) of the case body 2 gradually moves from the upper side to the lower side of the display shelf 5 (the second air guide 7B). It is arranged away from the longitudinal edge 5b). The same effects as those of the above-described embodiment can be obtained with the modification 5 as well.

Although not shown, the first air guide 7A and the second air guide 7B may have cavities (honeycomb-like cavities or wave-like cavities) for straightening.

Furthermore, although illustration is omitted, the lower surface of the display shelf 5 may be formed with a curved surface that protrudes downward. In this way, the airflow that has flowed along the lower surface of the display shelf 5 flows obliquely upward on the downstream side, and the entire airflow can be raised upward, particularly on the downstream side, thereby further improving the effect. can be done.

Although the embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and further modifications and changes are possible based on the technical idea of the present invention. Of course there is.

DESCRIPTION OF SYMBOLS 1, 10... Flat open showcase, 2... Case main body, 3... Storage chamber, 4... Windshield, 5... Display shelf, 5a... First longitudinal edge, 5b... Second longitudinal edge, 7A... First air Guide, 7B... Second air guide, 51... Shelf body, 52... Metal plate, 71... Mounting part

Claims (11)

a case body which is formed in a box shape with an open upper surface, stores commodities therein, and cools the interior by forming an air curtain of cool air;
a display shelf provided above the case body on which articles including merchandise can be displayed;
has
The lower surface of the display shelf is made of smooth and glossy metal,
Flat open showcase. further comprising an air guide provided near the display shelf for rectifying an airflow directed from the outside toward the inside of the case body so that the airflow flows in the vicinity of the lower surface of the display shelf;
The flat open showcase according to claim 1. a case body which is formed in a box shape with an open upper surface, stores commodities therein, and cools the interior by forming an air curtain of cool air;
a display shelf provided above the case body on which articles including merchandise can be displayed;
an air guide provided in the vicinity of the display shelf for rectifying an airflow directed from the outside toward the inside of the case body so that the airflow flows in the vicinity of the lower surface of the display shelf;
A flat open showcase. 4. A flat open showcase according to claim 2 or 3, wherein said air guide is spaced apart from a predetermined edge of said display shelf and provided along said predetermined edge. The display shelf is formed in a rectangular shape when viewed from above,
the predetermined edge of the shelf is a longitudinal edge of the shelf;
The flat open showcase according to claim 4. 6. A flat open showcase according to claim 4 or 5, wherein said air guide is arranged so as to gradually approach said predetermined edge of said display shelf from the upper side to the lower side. 7. The flat open showcase according to claim 6, wherein a lower portion of said air guide is located below said display shelf. 8. A flat open showcase according to claim 6 or 7, wherein the lower end of said air guide is located below the lower surface of said display shelf. The flat open showcase according to any one of claims 2 to 8, wherein the air guide is curved or bent so that the lower side of the air guide wraps around below the lower surface of the display shelf. The flat open showcase according to any one of claims 2 to 9, wherein said air guide is detachably attached to said display shelf. The flat open showcase according to any one of claims 2 to 10, wherein at least part of said air guide is translucent.

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