KR101892600B1 - Open type cooling and heating showcase with rotary type cam switch for changing cooling mode and heating mode - Google Patents

Abstract

The present invention relates to an open type showcase for both refrigeration and warming equipped with a rotary cam switch, and minimizes the problem of erroneous operation of the switch due to improper operation of the user during cold / hot switching.
The present invention is characterized in that the refrigerator is provided with a refrigeration dedicated position for switching to a refrigeration-only operation in an upper area and a lower area of a shelf space formed in an open form in a cabinet, And a warm-up dedicated position for switching to a warm-only operation, which is a warm-up mode, in both the upper area and the lower area of the display space, and the rotation type rotary handle is rotated And a cold / hot switching cam switch for allowing only one of the refrigeration-dedicated position, the cold / warm-up position, and the warm-up-only position to be selectively positioned to perform any one of refrigeration only operation, cold / .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open type showcase for a refrigerator and a hot store equipped with a rotary cam switch for cold /

The present invention relates to an open type showcase for both refrigeration and warming, and more particularly, to a refrigerator having a cold-on-off switching function and a hot-on- Equipped with a cam switch for three-position switching which can be switched to a hot-spot-only operation and a cold / warm-running operation, so as to minimize the problem of erroneous operation of the switch by cold- The present invention relates to an open type showcase for both cold storage and hot storage, which has a rotary cam switch for cold / hot switching.

In general, an open type showcase is installed in a convenience store, a department store, or the like, and stores various goods inside the opened front side, circulates the cooled low-temperature air and stores it in a freshly refrigerated state. It is.

This open showcase ejects cooling air from top to bottom to form an air curtain to block the open front. This is to prevent the cold air from escaping from the storage room where the merchandise is displayed and to block the inflow of ambient air containing fine impurities. That is, the air curtain blows the compressed air from the top to the bottom and installs the suction port at the bottom to block the outside and the inside by making an air film. (Flow) of the air that has adjusted the temperature, humidity, and the like.

In addition, not only refrigerated goods are displayed, but also hot-spot products are required to be displayed together. Thus, an open-type showcase serving also as a refrigerator and a warming-up has appeared. That is, in order to serve both the refrigeration and the warming, a heater is installed in the shelf, and a shielding film is formed inside the duct of the duct through which the cold air flows, so that the refrigerator and the warming are combined.

An example of the structure of the open showcase that serves as both a refrigerator and a hot shop is Korean Register Room 20-0395162, Korean Registration Room 20-0408115, Korean Registration Room 20-0422037, Korean Registration Room 20-0422038, Korean Registration Room 20-0422039 And the like.

However, in the case of an open type showcase which serves both as a cold storage and a warm storage, the shelf space can be selectively used as a cold storage space and a warm storage space. However, since the duct shield is structurally structured inside the duct of the product, The duct blocking membrane is formed in the duct of the product when the refrigerator is used for the entire refrigeration, and thus the duct blocking membrane is opened. However, due to the structural limitation of structurally obstructing the flow of the cold air, And the performance of products such as a temperature deviation between the shelves becomes worse. As a result, there was a structural limitation that the same display space could not be maintained even if the sales ratios of refrigerated products and hot-spot products displayed on shelves differed by season and region. In the case of the function of the product, especially in the summer, when the entire shelf of the product is used for refrigeration, the above structural problems (that is, the structural problem of structurally obstructing the flow of cold air due to the fact that the duct- Limitations), adversely affecting the formation of the air curtain, and excessive temperature deviation between the top and bottom of the shelf is generated, which makes it difficult to maintain the product's excellent performance.

Accordingly, the applicant of the present invention has made it possible to selectively use the product display space as a refrigerator and a warm space as disclosed in Korean Utility Model Registration No. 04328573, thereby changing the display space in correspondence with seasonal and regional sales amounts of refrigerated and heated products And the back panel assembly is constructed to have a structure having a fluidity of assembly so that the size of the display space can be changed so that products of various sizes can be displayed at desired positions to maximize the efficiency of use of the display space, We have developed an open type showcase for both cold and warmth to maximize the product performance by constructing the barrier plate on the shelf.

In the case of the open-type showcase, which is also used for both heating and refrigeration, the product display space is divided into two areas, and two switches are operated as shown in FIG. 9, Both areas were transformed into a hot zone, and one of the two areas was switched to a hot zone and the other was cold.

However, in the case of such a method of operating the two switches, there is a problem that the user frequently operates the switch by mistaking the switch for switching to an unintended form.

Korean Utility Model Registration No. 0438573 (Feb. 15, 2008)

Accordingly, it is an object of the present invention to provide a three-position cam switch capable of switching between driving, hot-only operation, and cold / warm operation, There is provided an open type showcase for a refrigerator and a hot store equipped with a rotary cam switch for cold / hot switching provided with a rotary cam switch for cold / hot switching so as to minimize the problem of erroneous operation of the switch.

In order to achieve the above object, according to the technical idea of the present invention, an open type showcase for both refrigerating and heating is switched to a refrigeration only operation in an upper area and a lower area of a shelf space formed in an open form in a cabinet, A cold-only position for switching to the cold / warm-only operation in which both the upper area of the display space and the lower area are both refrigerated, and a warm-up operation mode in which the upper area and the lower area of the display space are both in the warm- And the rotary type rotary handle is rotated so that the refrigerator can be selectively positioned in only one of the refrigeration-dedicated position, the cold / warm-up position and the heating-only position, Cold-switching cam switch that can operate only one of the operation And that also characterized in that on the technical configuration.

In this case, a guiding phrase for 'cold only' in the position dedicated to refrigeration of the cam switch, a guiding phrase for 'both cold and warm' consisting of 'cold', red 'on' , And a red 'warming-only' guiding text is displayed in the heating-only position.

A cabinet having a display space and an open front; A plurality of display shelves which are installed in the cabinets in the upper and lower portions of the shelf space and which are operated in both the upper and lower regions of the display space during the dedicated heating operation and which are operated only in the upper region of the display space, and; A back panel assembly installed behind the display shelf; A heat insulating wall formed at a rear portion of the back panel assembly to form a cold air circulation path for supplying cold air to the entire display space; A refrigeration cycle in which cold air is supplied to the display space through the cold air circulation path while generating cold air while being operated during refrigeration only operation and cold / warm operation; And is installed to be slidable in the forward and backward directions on the lower part of the intermediate shelf shelf provided on the boundary line between the upper area and the lower area of the display shelves among the shelf shelves so as to open the cold air circulation passage A shutoff plate capable of advancing and shutting off a cool air flow passage leading to an upper area of the display space in a combined cold and warm operation; And a duct cover installed on a lower side of the display shelf to form a cool air passage together with the display shelf, wherein the shield plate is divided into left and right parts, and a space is formed at the center thereof, A rail box which is installed in the longitudinal direction but is in line with any one of the divided blocking plates and is located on the same line as the blocking plate; An upper slide rail disposed inside the rail box in a state of being fixed to the lower side of the display shelf along the front and rear direction, and an upper slide rail coupled to the upper slide rail so as to be slidable in the longitudinal direction, A lower slide rail for guiding the forward and backward movement of the plate; The blocking plate is divided into a plurality of divided blocks in the installation space, and is coupled with the blocking plate side to which the rail box is not coupled. The blocking plate is located on the same line as the blocking plate and the rail box. And further includes a switching handle for forward movement.

In addition, when the cold / hot switching cam switch is used for the purpose of "cold only, hot only use, please pull out the switching knob to the outside" and "please push the switching knob to the inside when using cold / have.

In addition, the rail box and the switching knob are formed to have the same height as the height of the shield plate in a state where the rail box and the switch handle are arranged side by side in the installation space, and are positioned on the same horizontal plane without protruding upward and downward from the shield plate .

Also, the rail box may be formed in a U-shaped cross section having an open upper side, and the transition handle may have an inverted U-shaped cross section opened at a lower side.

Further, the switching handle is formed to have a front-rear width equal to the front-rear width of the display shelf so as to protrude forward of the blocking plate, and the front end of the switching handle protrudes forward from the display shelf in a state in which the blocking plate is advanced The wedge-shaped snap protrusion is formed on the lower side of the switching handle in a diamond shape toward the rear. When the blocking plate is retracted on the upper surface of the duct cover, the snap protrusion is inserted into the snap- And the catcher is engaged with the catcher when the catcher is in the retracted state, so that the catcher does not allow the blocking plate to advance unless a predetermined force is applied thereto.

In addition, on the front surface of the switching handle, a phrase " lower switch operation required " for guiding the operation of the cam switch together with a phrase " switching handle ", " switching the hot zone by pushing the switching knob & A label of a red color printed with the phrase "

The open type showcase having a rotary cam switch according to the present invention is provided with a rotary cam switch of three positions for switching between cold, warm, and cold operation, and malfunctions due to a user malfunctioning the switch during cold switching Can be minimized.

Further, in the present invention, the blocking plate is provided with a central handling and sliding structure, so that the user can easily assist the switching of the operation mode of the cam switch by simply pushing and pulling using only one hand.

1 is a photograph for explaining a configuration of a cam switch in an open type showcase for both refrigeration and heating according to an embodiment of the present invention
2 is a longitudinal sectional view for explaining the overall configuration of an open showcase for both refrigeration and heating according to an embodiment of the present invention
Figs. 3A and 3B are a series of reference cross-sectional views for explaining the operation of an open showcase for both refrigeration and warming according to an embodiment of the present invention
4 is a perspective view of a shelf assembly in an open showcase for both refrigeration and heating according to an embodiment of the present invention.
5 is an exploded perspective view of a shelf assembly in an open type showcase for both refrigeration and heating according to an embodiment of the present invention.
6A and 6B are a series of reference perspective views for explaining an operation relationship in a shelf assembly in an open showcase for both refrigeration and warming according to an embodiment of the present invention.
Figs. 7A and 7B are cross-sectional views taken along line AA of Figs. 7A and 7B,
Figs. 8A and 8B are cross-sectional views taken along CC lines of Figs. 6A and 6B,
9 is a photograph for explaining the configuration of the cam switch in the open showcase for both the cold storage and the warming according to the prior art

An open showcase for both refrigeration and heating according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention, and are actually shown in a smaller scale than the actual dimensions in order to understand the schematic structure.

Also, the terms first and second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

FIG. 1 is a photograph for explaining the configuration of a cam switch in an open type showcase for both cold storage and warming according to an embodiment of the present invention, FIG. 2 is a view for explaining the overall configuration of an open showcase for both refrigeration and warming according to an embodiment of the present invention Fig. 3A and 3B are a series of reference sectional views for explaining the operation of the open showcase for both the cold storage and the warm storage according to the embodiment of the present invention.

As shown in FIG. 1, the open type showcase for both refrigeration and warming according to the embodiment of the present invention is provided with a rotary cam switch capable of selectively switching to refrigeration only operation, hot only operation, and cold / warm operation.

That is, in the case of the cam switch, the cam switch is provided with a refrigerating dedicated position for switching to refrigeration only operation, a cold / warming position for switching to cold / So that the rotary handle can be selectively rotated to one of the refrigeration-dedicated position, the cold / warm-up position, and the heating-only position. As a result, only one of the refrigeration only operation, the cold / warm operation, and the hot only operation can be selectively performed without overlapping.

According to such a configuration, there is no problem of redundant operation according to a conventional method using a switch having a cold-on / off selection function and a switch having a warm-on / off-selection function, so that unintended operation is not performed.

In this case, the shelf space of the cabinet is divided into an upper region where the shelves 1 and 2 are located, and a lower region where the shelves 3, 4, and 5 are located, so that when the cam switch is operated for refrigeration, cold / It operates as summarized in Table 1.

switch 1-2 stage 3-5 steps Refrigerated only cold storage cold storage Combined cold and warm Hot springs cold storage Only for the hot springs Hot springs Hot springs

At this time, as shown in Table 2 below, the refrigeration cycle including the compressor is operated in the refrigeration-only operation, but the heaters built in the shelves of the first and second stage shelves belonging to the upper area of the shelf space and the third, fourth and fifth stages belonging to the lower area of the shelf space The built-in heater does not start. In the combined cold and warm operation, the heater incorporated in the refrigerator cycle and shelf shelves in the upper and lower shelves of the display space is operated, and the heaters built in the third, fourth and fifth stages belonging to the lower area of the shelf space are not operated Do not. On the other hand, during the heating-only operation, the refrigeration cycle is not activated, but the heaters built in all the display shelves are activated.

Refrigerated only Combined cold and warm Only for the hot springs Upper heater OFF ON ON Bottom heater OFF OFF ON Refrigeration cycle ON ON OFF

Further, a guiding phrase of 'blue only' for refrigeration only is provided in the position for exclusive use of the cam switch, and a 'cold and warm both directions' combination of 'cold', red 'on' And a red "warming-only" guideline is displayed at the position dedicated to the hot springs. Such a configuration guides the user to clearly recognize the selection position for the refrigeration-only operation, the cold / warm-up operation, and the heating-only operation, thereby helping the user to select the desired operation precisely.

It is important to switch the operation mode of the various modes through the cam switch such that the lower and upper regions of the display space are divided into the hot zone and the cold zone, And the cold air used for cooling is prevented from penetrating into the upper region. For this purpose, a message saying 'Pull out the switching knob when using only for cold storage only, and push the switching knob inside when using cold / hot use' is displayed next to the cam switch, so that the user can operate the blocking plate Guide the switching knob to be operated together.

As described above, in order to divide the display space of the cabinet 1 into an upper region and a lower region, a shield plate and a switching handle, which are operated together with the cam switch, are required, which will be described in detail below.

2, the open showcase for both the cold storage and the warm storage according to the embodiment of the present invention includes a cabinet 1 having a display space and an opened front side, A plurality of display shelves 3, which are installed in the upper area and the lower area of the display space for exclusive use in the warming-up operation and have a heater which is operated only in the upper area of the display space in combination with cold and warm operation, A heat insulating wall 6 spaced from the rear of the back panel assembly 4 to form a cool air circulating passage 5 and a heat insulating wall 6 disposed on the shelf shelf 5 through the cool air circulating passage 5, A condenser 110 and a condenser fan 120 provided below the display space of the cabinet 1 to generate and supply cool air so that cool air is supplied to the entire display space of the refrigerator 1, 5) below the circulating air inlet A refrigerating cycle including an evaporator 130 and an evaporator fan 140 provided on the side of the refrigerator and a shelf assembly for opening or closing the refrigerant communication passage 5 according to an operation mode.

The shelf assembly is slidably installed in the lower portion of the display shelf 3 along the front and rear direction of the display shelf so as to perform a forward operation in order to open the cold air flow passage during dedicated cold- (In this case, the backward movement is defined as a movement toward the front side of the shelf 3), and in the cold / warm-running operation, the backward movement is performed to shut off the cold air flow path leading to the upper region of the display space And a cooling air passage 9a provided on the lower side of the display shelf 3 and along with the display shelf 3 when the blocking plate 7 is retracted, And a duct cover (9) for guiding cold air to the front of the shelf (3), and further comprises a rail box, an upper slide rail and a lower slide rail, and a switch handle. The shielding plate 7 and the duct cover 9 constituting the shelf assembly are installed on the lower side of the shelf 3 and selectively installed in a desired stage among the plurality of shelf shelves 3 Can be installed.

Such a shelf assembly is noticeable in that it allows the user to easily recognize how it is operated and is constructed so that it can be easily pushed and pulled in a sliding manner using only one hand, without increasing the thickness due to the configuration.

Hereinafter, an open showcase for both refrigeration and heating according to an embodiment of the present invention will be described in detail with reference to the configuration of the shelf assembly.

FIG. 4 is a perspective view of a shelf assembly in an open type showcase for both refrigeration and heating according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of a shelf assembly in an open type showcase for both refrigeration and warming according to an embodiment of the present invention, FIG. 6B is a series of reference perspective views for explaining an operation relationship in a shelf assembly in an open showcase for both refrigeration and warming according to an embodiment of the present invention, and FIGS. 7A and 7B are cross-sectional views along AA of FIGS. 7A and 7B, respectively . 8A and 8B are cross-sectional views along C-C in Figs. 6A and 6B, respectively.

The shelf assembly comprises a shelf assembly 3, a shield plate 7a and a duct cover 9 which are divided into left and right parts to have a mounting space at the center and a duct cover 9, A rail box 7c, an upper slide rail 8a and a lower slide rail 8b are provided in an installation space provided at the center of the shield plate 7a.

The display shelves 3 are spaced apart from each other in the vertical direction in a state where they are supported by the back panel assembly 4 in a cabinet opened front as shown in FIG. The display shelf 3 is provided with a heater 2 in the form of a hot line so that the heater 2 can be operated in the warming function.

The shutoff plate 7a is slidably installed along the forward and backward directions on the lower part of the two-stage display shelf 3 installed on the boundary line between the upper area and the lower area of the display space among the display shelves 3, The forward movement operation can be performed to open the cold air circulation passage at the time of operation and the operation for exclusive use of the hot zone, and the backward movement operation can be performed to interrupt the cold air circulation passage leading to the upper region of the display space at the time of cold /

Here, the blocking plate 7a is divided into right and left portions to form an installation space therebetween. As described above, when the blocking plate 7a is divided into left and right parts and the space is provided at the center thereof, the rail box 7c and the switching handle 7b can be embedded. However, it is preferable that the blocking plate 7a is maintained in a state of connecting the right and left without separating the rear end face rather than completely separating the blocking plate 7a.

The rail box 7c accommodates the upper slide rail 8a and the lower slide rail 8b while preventing interference with other parts due to the operation of the upper slide rail 8a and the lower slide rail 8b . For this purpose, the rail box 7c is formed in a U-shaped cross section with the upper side opened, and is installed in the installation space formed at the center of the cut-off plate 7a in the longitudinal direction in the longitudinal direction, (In the figure, in the figure) is located on the same line as the blocking plate 7a. Further, the rail box 7c is formed to have the same height as the height of the blocking plate 7a together with the switching knob 7b, and is located on the same horizontal plane without protruding upward and downward from the blocking plate 7a .

The upper slide rail 8a is fixed to the lower side of the display shelf 3 and is located in the rail box 7c along the longitudinal direction. The lower slide rail 8b is engaged with the rail box 7c in a state of being slidable in the front-rear direction with respect to the upper slide rail 8a to guide the movement of the shutoff plate 7a It plays a role. When the upper slide rail 8a and the lower slide rail 8b are provided as described above, the upper slide rail 8a and the lower slide rail 8b, which are components for sliding operation, as shown in FIGS. 7A and 7B, So that the blocking plate 7a can smoothly move back and forth. Therefore, as compared with the related art in which the shield plate 7a is slidably connected to the shelf 3, the damage caused by the direct contact between the shelf 3 and the shield plate 7a can be prevented and the frictional contact area can be significantly reduced So that the blocking plate 7a can be moved back and forth more smoothly with less force.

The switching handle 7b is coupled to the other side surface of the blocking plate 7a which is divided in the installation space provided at the center of the blocking plate 7a and to which the rail box 7c is not engaged, And is located on the same line as the plate 7a and the rail box 7c. The switching handle 7b is formed to have the same height as the height of the shielding plate 7a in the installation space provided at the center of the shielding plate 7a, It is located on the same horizontal plane without projecting upward and downward. Further, the switching handle 7b is formed as an inverted U-shaped cross section whose lower side is opened from the side of the rail box 7c formed by a U-shaped cross section whose upper side is opened. When the switching handle 7b is formed in the inverted U-shaped cross section, the user can easily push and pull the finger under the front end of the switching handle 7b.

The switching handle 7b is formed to protrude forward of the blocking plate 7a and has a front and rear width equal to the front and rear width of the display shelf 3, So that the front end of the switching handle 7b is only exposed without protruding to the front side of the display shelf 3 in the advanced state. 9, the operation of the cam switch is guided to a front side of the switching handle 7b in a smaller size than the phrase 'switching knob 7b' and the phrase 'switching knob 7b' A label of red color printed with the phrase " lower switch operation required ", " switching the warmth by pushing the switching knob 7b ", and " switching the refrigerator when the switching knob 7b is pulled " According to this configuration, it can be seen that every user has a function of switching between refrigeration and warming in an open type showcase for both refrigeration and warming, and it can be seen that the refrigerator can be cooled by the switching knob 7b located at the center of the display shelf 3, And that a warm-up transition is made.

A wedge-shaped snap protrusion 71 formed in a diamond shape rearward is provided inside the lower portion of the switching handle 7b. Correspondingly, on the upper surface of the duct cover 9, the blocking plate 7a is retracted A catcher 72 for holding the snap protrusion 71 by snap coupling is provided. The catcher 72 may be provided with a pair of rollers elastically supported so as to have a tendency to be collected at the center. The catcher 72 does not allow the forward movement of the wedge-shaped snap protrusion 71 as long as an external force equal to or greater than a predetermined value is not applied thereto. Therefore, when the blocking plate 7a is slid backward and slides backward, the wedge-shaped snap protrusion 71 and the catcher 72 can not slide in the forward sliding state The forwarding operation by the motor is not performed.

In order to completely perform the operation mode switching using the cam switches, the blocking plate 7a is formed to be divided into left and right portions so as to have an installation space at the center, and the blocking plate 7a The user can easily recognize the operation mode and can easily intercept the sliding door 7b, the rail box 7c, the upper slide rail 8a and the lower slide rail 8b for the slide operation. The plate 7a can be moved forward and backward. It can be noted that no thickness increase occurs at all because of the reason of adding the switching handle 7b, the rail box 7c, the upper slide rail 8a and the lower slide rail 8b to the blocking plate 7a.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

3: display shelf 7a: shield plate
7b: switching handle 7c: rail box
71: snap protrusion 72: catcher
8a: upper slide rail 8b: lower slide rail
9: duct cover 9a: cold air passage

Claims (8)

In an open showcase for both refrigeration and heating,
A refrigeration-dedicated position for switching to a refrigeration-only operation in both of an upper area and a lower area of the shelf space formed in a form that the front surface is open in the cabinet; And a warming-up position for switching to a heating-only operation which is a warm-up mode for both the upper area and the lower area of the display space. The rotary-type rotation handle is rotated to rotate the rotary- A cold / hot switching cam switch that can be selectively positioned in only one of the cold / hot position and the hot-spot only position so as to perform only one of refrigeration only operation, cold / warm operation and warm-only operation;
A cabinet having a display space and an open front;
A plurality of display shelves which are installed in the cabinets in the upper and lower portions of the shelf space and which are operated in both the upper and lower regions of the display space during the dedicated heating operation and which are operated only in the upper region of the display space, ;
A back panel assembly installed behind the display shelf;
A heat insulating wall spaced rearward of the back panel assembly to form a cool air circulation passage for supplying cool air to the entire display space;
A refrigeration cycle in which cool air is supplied to the display space through the cold air circulation path while generating cold air while being operated during refrigeration only operation and cold / warm operation;
And is installed slidably in the forward and backward directions on the lower part of the intermediate shelf installed on the boundary line between the upper area and the lower area of the display shelves among the shelf shelves so as to open the cold air circulation passage A shutoff plate capable of performing a backward movement in order to shut off the cold air flow path leading to the upper region of the display space when cold /
And a duct cover installed on a lower side of the display shelf to form a cool air passage together with the display shelf,
The blocking plate is divided into left and right portions, and an installation space is formed at the center thereof,
A rail box which is installed in the installation space formed at the center of the shield plate in the longitudinal direction in the longitudinal direction and is located on the same line as any one of the divided shield plates,
An upper slide rail disposed inside the rail box in a state of being fixed to a lower side of the display shelf along a front and rear direction, a lower slide rail coupled with the rail box so as to be slidable in the longitudinal direction relative to the upper slide rail, A lower slide rail for guiding the forward and backward movement of the lower slide rail;
And a switching handle coupled to the other of the blocking plates in the divided space in the installation space formed at the center of the blocking plate and coaxial with the blocking plate and the rail box,
The user can grasp the switching handle by using only one hand to push and pull the switching plate to retract and advance the blocking plate,
The rail box and the switching knob are formed to have the same height as the height of the shield plate in a state where the rail box and the switch handle are arranged side by side in the installation space formed at the center of the shield plate and are not protruded to the upper side and the lower side of the shield plate, Wherein the first and second openings of the first and second openings of the first and second openings are aligned with each other. The method according to claim 1,
In the dedicated position for refrigeration of the cam switch, a 'cold only' guiding phrase consisting of a blue 'cold only' instruction, a cold 'cold' position, a red 'on' and a black ' An open showcase for both cold and warming, featuring a red "warm-only" guiding text at the dedicated position. delete The method according to claim 1,
When the cold / hot switching cam switch is used for the purpose of "cold only, hot only use, please pull out the switching knob to the outside" and "please push the switching knob inside when using cold / hot use" Combined open showcase. delete The method according to claim 1,
Wherein the rail box is formed in a U-shaped cross-section opened on the upper side, and the transition handle is formed in an inverted U-shaped cross-section opened in a lower side. The method according to claim 6,
Wherein the switching handle is formed to have a front and rear width equal to the front and rear width of the display shelf so as to protrude forward of the blocking plate and the front end of the switching handle is protruded forwardly of the display shelf, However,
A wedge-shaped snap protrusion formed in a diamond shape rearward is provided on the lower side of the switching handle, and a catcher is provided on the upper surface of the duct cover to catch the snap protrusion by snapping engagement when the blocking plate is retracted Wherein when the blocking plate is in the retracted state, the blocking plate is prevented from advancing unless snapping force is applied to the snap protrusion and the catcher. 8. The method of claim 7,
The phrase " lower switch operation required " for guiding the operation of the cam switch together with the phrase " switching knob " is displayed on the front surface of the switching knob, a phrase " switching the hot zone by pushing the switching knob " And a label of a red color printed on the display panel is attached.

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