JP3059880B2 - Open showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase having an automatic winding type night cover for protecting an air curtain at night or the like.

[0002]

2. Description of the Related Art A conventional open showcase of this type is disclosed in, for example, Japanese Utility Model Publication No. 60-5348 (F25D23 / 0).
As shown in 2), an air curtain (cold air) is formed in the front opening of the storage room formed in the heat insulating wall, and a self-winding night cover is provided on the upper outside of the opening.
When the store is closed at night or the like, the night cover is pulled down and spread outside the air curtain to prevent the deterioration of the driving efficiency due to the invasion of the outside air.

FIG. 7 shows a conventional open showcase 101.
An example is shown below. The open showcase 101 is composed of a heat insulating wall 102 having a substantially U-shaped cross section and side plates (not shown) attached to both sides of the heat insulating wall 102. A partition plate is attached, and the inside of the partition plate is a storage room 106.
A handrail 108 is provided on the front side of the upper end of the front wall 102A of the heat insulating wall 102 constituting the lower edge of the front opening 107 of the storage room 106, and the upper end of the front wall 102A is provided on the rear side of the handrail 108. A windshield 109 as a transparent plate is provided upright at the rear edge.

A deck pan 111 is provided behind the upper end of the front wall 102A of the heat insulating wall 102.
The storage chamber 106 is formed above the partition 11, and a duct 112 is provided between the partition plate and deck pan 111 and the heat insulating wall 102. In front of the deck pan 111, an inlet guard 113 is provided upright at a predetermined interval behind the windshield 109. The suction port guard 113 is formed, for example, by combining wires (steel wire) in a net shape by spots or the like.
13 and a windshield 109 between the duct 112
Is formed.

A suction port cover 117 having a plurality of slits is attached to the suction port 116, and a hook 118 bent in a hook shape is fixed to the upper surface of the suction port cover 117 by welding.

In the duct 112, a cooler and a blower of a refrigerating device (not shown) are installed.
A discharge port (not shown) communicating with the duct 112 is formed in an upper part of the pipe 7. An automatic winding-type night cover NC is attached to the upper outside of the opening 107 located outside the discharge port. A handle-like handle H is provided at the center of the lower end of the night cover NC. The hooks 118 are attached by the number of night covers NC to be attached.

[0007] When the refrigeration system is operated with the above configuration, the cool air that has exchanged heat with the cooler is blown by the blower into the duct 1.
12 and is discharged from the discharge port toward the suction port 116 at the lower edge of the opening 107. The discharged cool air is sucked through the suction port 116 and returns to the duct 112, so that an air curtain is formed in the opening 107 by the cool air. The air curtain suppresses outside air from entering through the opening 107 and a part of the cool air is stored in the storage room 10.
Circulate in 6 to cool the inside.

On the other hand, when the store is closed at night or the like, the handle portion H of the night cover NC is pulled down with the handle portion H and is spread out of the air curtain as shown in FIG.
To the hook 118. As a result, the opening 107 is closed outside the air curtain, so that invasion of outside air is significantly reduced, and operation efficiency is improved.

Next, FIG. 8 shows another example of the conventional open showcase 101. In FIG. 8, the same reference numerals as those in FIG. 7 denote the same elements. In this case, a windshield cover 121 is attached to the upper end of the windshield 109, and the hook 108 is attached to the windshield cover 1.
21 is provided on the inner edge by welding or by integral molding. At night or the like, the handle H of the night cover NC is engaged with the hook 108 as shown in FIG.

[0010]

However, in the case of the structure shown in FIG. 7, since the space between the windshield 109 and the suction port guard 113 is narrow, the handle portion H of the night cover NC is drawn into this space. The operation of locking the hook 108 becomes extremely complicated. Further, in the case of the structure of FIG.
08, there is a problem that the customer's hands, clothes, etc. are easy to touch, and are obstructive and dangerous.

The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to provide an open showcase having improved locking workability and safety when expanding a night cover. With the goal.

[0012]

According to the present invention, there is provided an open showcase comprising an air curtain formed at a front opening of a storage room, and a self-winding night cover attached to an upper portion of the opening. A transparent plate and a suction port guard are provided at the lower part of the opening at an interval in front and rear, respectively, and an air curtain suction port formed between the transparent plate and the suction port guard is provided. A hook is provided at the upper part of the handle to lock the handle of the night cover, and the hook is protruded toward the suction port, and the leading end of the hook is close to or in contact with the upper end of the transparent plate.

Further, in the above-mentioned open showcase according to the second aspect of the present invention, the hook is substantially U-shaped,
The U-shaped curved end is folded back to form a locking portion.

Further, the open showcase according to the third aspect of the present invention is characterized in that, in the first aspect, the hook is allowed to protrude and retract above the transparent plate.

[0015]

According to the open showcase of the present invention, a hook is provided above the inlet guard, and the hook is protruded toward the inlet, and the leading end locking portion is close to or in contact with the upper end of the transparent plate. Because it is in contact, the night cover can be spread outside the air curtain and the suction port with the handle of the night cover locked with the hook,
Deterioration of operation efficiency due to intrusion of outside air can be effectively prevented.

[0016] Since the handle of the night cover can be easily locked as compared with the case where a hook is provided in the cover of the suction port as in the related art, the engagement when the night cover is expanded. The stopping workability can be remarkably improved.

Further, according to the open showcase of the second aspect of the present invention, in addition to the above, the hook is substantially U-shaped, and the curved end of the U-shape is folded to form a locking portion. Therefore, even if the customer or the like touches the hooking device, there is little danger of damage and the safety can be improved.

Furthermore, according to the open showcase of the third aspect of the present invention, in addition to the first aspect, the hooking device is made to be able to protrude and retract above the transparent plate. When there is no hook, the hook can be stored and placed below the transparent plate, and it is possible to prevent customers and the like from touching the hook and improve safety. .

[0019]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view of an open showcase 1 of the present invention, FIG. 2 is an enlarged vertical sectional side view of a lower portion of a front end of the open showcase 1, and FIG. Notched enlarged perspective view, FIG.
FIG. 2 is an enlarged perspective view of a part of a lower portion of a front end of the open showcase 1 with a night cover NC wound up.

In each of the figures, an open showcase 1 is composed of a heat insulating wall 2 having a substantially U-shaped cross section and side plates (not shown) attached to both sides of the heat insulating wall 2. The partition plate 3 is attached at intervals, and the inside of the partition plate 3 is a storage room 6. A handrail 8 is provided on the front side of the upper end of the front wall 2A of the heat insulating wall 2 constituting the lower edge of the front opening 7 of the storage room 6, and on the rear side of the handrail 8, the upper end of the front wall 2A is provided. A windshield 9 as a transparent plate is provided upright at the rear edge.

A deck pan 11 is provided at the rear of the upper end of the front wall 2A of the heat insulating wall 2. The storage room 6 is formed above the deck pan 11, and the partition plate 3, the deck pan 11, and the heat insulating wall 2 are connected to each other. The space between them is a duct 12. At the front side of the deck pan 11, an inlet guard 13 is provided upright at a predetermined interval behind the windshield 9. The suction port guard 13 includes a horizontally long rectangular peripheral frame 14 made of, for example, a wire (steel wire) and upper and lower bars 15A.
And the left and right crosspieces 15B are combined in a net shape by spots or the like, and the suction port 1 communicating with the duct 12 is provided between the suction port guard 13 and the windshield 9.
6 are constituted. A suction port cover 17 having a plurality of slits is attached to the suction port 16.

A hook 18 is fixed to the upper side of the frame 14 of the inlet guard 13 by welding. The hook 18 is formed by folding a wire (steel wire) having a smooth surface similar to that described above, and has a substantially U-shape. The open end of the U-shape is fixed to the frame 14 by welding. . Also,
The hook 18 projects diagonally forward and upward from the frame 14 on the suction port 16 side, and its U-shaped curved end is located above the upper end of the windshield 9 and is close to it. In addition, the U
The curved end of the character is folded upward to form a locking portion 18A.

On the other hand, a cooler 21 and a blower 22 of a refrigeration apparatus (not shown) are installed in the duct 12, and a discharge port 23 communicating with the duct 12 is formed above the opening 7. An automatic winding type night cover NC is attached to the upper outside of the opening 7 located outside the discharge port 23. The night cover NC is normally wound.
In that state, the opening 7 is open. A handle H is provided at the center of the lower end of the night cover NC. The hooks 18 are attached by the number of night covers NC to be attached.

On the other hand, the storage room 6 has a plurality of shelves 26.
The fluorescent lamp 2 is provided on the lower surface of the front part of each shelf 26, the ceiling part of the storage room 6, and the eave 27 outside the upper part of the opening 7.
8 ... are attached respectively.

When the refrigerating apparatus is operated with the above-described configuration, the cool air that has exchanged heat with the cooler 21 is raised in the duct 12 by the blower 22 and flows from the discharge port 23 to the suction port 16 at the lower edge of the opening 7. Is discharged. The discharged cool air is sucked through the suction port 16 and returned to the duct 12, whereby an air curtain is formed in the opening 7 by the cool air. The air curtain suppresses outside air from entering through the opening 7 and a part of the cool air circulates in the storage room 6 to cool the inside.

On the other hand, when the store is closed at night or the like, the handle H of the night cover NC is pulled down with the handle H, and the handle H is spread out outside the air curtain as shown in FIGS. 18 is locked to the locking portion 18A.
In this state, the lower end of the night cover NC is attached to the windshield 9.
It is located near the upper end, whereby the opening 7 is closed outside the air curtain. Therefore, the intrusion of the outside air is significantly reduced, and the operation efficiency is improved.

At this time, since the locking portion 18A of the hook 18 is located near the upper end of the windshield 9, the windshield 9 and the suction port guard are provided as in the case where the hook is attached to the conventional suction port cover. There is no need to pull the handle portion H into the narrow space between 13. Therefore, the night cover N
Since the handle portion H of C can be easily locked to the locking portion 18A, the locking workability when expanding the night cover NC is significantly improved.

Particularly, since the locking portion 18A of the hook 18 is folded upward, the handle portion H can be easily connected to the locking portion 18A.
Can be locked. Further, since the hook 18 is substantially U-shaped and the locking portion 18A is formed by folding the curved end of the U-shape, there is no burr or the like,
Even if a customer or the like touches the hook 18, the risk of damage is extremely small. Therefore, a more secure open showcase can be provided.

In this embodiment, the locking portion 1 of the hook 18
Although 8A is brought close to the upper end of the windshield 9, it is not limited thereto, and the locking portion 18A may be brought into contact with the upper end of the windshield 9. And, by making the contact, the airtightness of the night cover NC can be further improved.

Next, FIGS. 5 and 6 show another embodiment of the open showcase 1 of the present invention. In this case as well, the hook 18 is formed in the same shape, but its U-shaped open end is curled, and the horizontal rail 15 of the inlet guard 13 is formed.
B is rotatably wound. Also, this horizontal rail 15B
Is also close to the upper side of the frame 14, and the hook 18 passes under the upper side and faces above the front suction port 16.

When the hook 18 is not used, the hook 18 turns downward as shown by the broken line in FIG. I have. In this state, the locking portion 18A is sunk below the upper end of the windshield 9, and therefore,
There is no danger of customers touching.

When the store is closed at night or the like, the locking portion 18A
, The hook 18 is pivoted upward, the locking portion 18A is pulled out above the windshield 9, and the grip portion H of the night cover NC is pulled down and spread out of the air curtain. Then, as shown in FIG.
Is locked to the locking portion 18 </ b> A of the hook 18.

At this time, the hook 18 is attached to the suction port guard 13.
The rotation is prevented by contacting the upper side of the frame 14 and the locking portion 18A
Is located near the upper end of the windshield 9. Accordingly, the lower end of the night cover NC is also located near the upper end of the windshield 9, whereby the opening 7 is closed outside the air curtain.

In this embodiment, the hook 18 is rotatably provided on the horizontal rail 15B of the suction port guard 13. However, the present invention is not limited to this. For example, the hook 18 is vertically movably mounted on the vertical rail 15A and used. When not in use, a structure in which the locking portion 18 </ b> A is positioned above the windshield 9 by raising it only when in use and raising the locking portion 18 </ b> A may be considered. In this case, the locking portion 18 </ b> A may be slidably brought into contact with the inner surface of the windshield 9.

[0035]

As described in detail above, according to the present invention, a hook is provided above the suction port guard, and the hook is projected toward the suction port, and the leading end locking portion is provided at the upper end of the transparent plate. Because it is close or abutted, the night cover can be spread outside the air curtain and the suction port with the handle of the night cover locked with the hook,
Deterioration of operation efficiency due to intrusion of outside air can be effectively prevented.

In particular, the handle portion of the night cover can be easily locked as compared with the case where a hook is provided on the cover of the suction port as in the prior art. The stop workability can be significantly improved.

According to the second aspect of the present invention, in addition to the above, the hook is substantially U-shaped, and the locking portion is formed by folding the curved end of the U-shape.
Even if the customer or the like touches the hooking tool, there is little risk of injury and the safety can be improved.

Further, according to the invention of claim 3, according to claim 1,
In addition to the above, the hooks are made to be able to protrude and retract above the transparent plate, so when it is not necessary to open the night cover at the time of opening a store, etc., store the hooks so that they are buried below the transparent plate. Thus, it is possible to prevent a customer or the like from touching the hook and improve the safety.

[Brief description of the drawings]

FIG. 1 is a vertical side view of an open showcase of the present invention.

FIG. 2 is an enlarged vertical sectional side view of a lower portion of a front end of the open showcase of the present invention.

FIG. 3 is a partially cut-away enlarged perspective view of the lower portion of the front end of the open showcase of the present invention with the night cover expanded.

FIG. 4 is a partially cutaway enlarged perspective view of a lower portion of a front end of an open showcase with a night cover wound up.

FIG. 5 is an enlarged vertical sectional side view of a lower portion of a front end of an open showcase according to another embodiment of the present invention.

FIG. 6 is an enlarged perspective view showing a part of a lower portion of a front end of the open showcase shown in FIG. 5;

FIG. 7 is an enlarged vertical sectional side view of a lower portion of a front end of a conventional open showcase.

FIG. 8 is an enlarged vertical sectional side view of a lower portion of a front end of another conventional open showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open showcase 2 Insulated wall 6 Storage room 7 Opening 9 Front glass (transparent plate) 13 Suction port guard 16 Suction port 18 Hooking tool 18A Locking part H Handle part NC Night cover

Claims (3)

(57) [Claims] 1. An open showcase in which an air curtain is formed at a front opening of a storage room, and an automatic wind-up night cover is attached to an upper portion of the opening, wherein a space is provided in front of and behind a lower portion of the opening. A transparent plate and a suction port guard provided respectively, and a suction port of the air curtain formed between the transparent plate and the suction port guard are provided, and a handle portion of the night cover is locked above the suction port guard. An open show case, wherein a hooking device is provided, the hooking device is protruded toward the suction port, and a leading end locking portion is brought close to or in contact with an upper end of the transparent plate. 2. The hooking device has a substantially U-shape.
The open showcase according to claim 1, wherein the locking portion is formed by folding a curved end of the character. 3. The open showcase according to claim 1, wherein the hooking device is movable above and below the transparent plate.