JP3118328B2 - Showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase which is equipped with electrical equipment such as a fluorescent lamp and a dew-proof heater and can be used by being connected to a plurality of them.

[0002]

2. Description of the Related Art Conventionally, in a showcase of this type, for example, Japanese Patent Publication No. 2-6993 (F25D27 / 00)
As shown in FIG. 1, a fluorescent lamp is provided in a low-temperature showcase such as freezing / refrigeration installed in a store, and this fluorescent lamp is connected to a power supply via a fluorescent light switch. The fluorescent lamp is turned on and off by opening and closing the fluorescent light switch at the time of closing and opening the store.

[0003]

Here, a plurality of such low-temperature showcases are usually connected and installed in a store, and a plurality of low-temperature showcases are usually simultaneously controlled for each type of goods to be stored. For example, a plurality of fluorescent lamps are turned on at the same time and turned off at the same time. Further, if the temperature zone in the refrigerator is the same, a plurality of dew-prevention heaters and the like for preventing dew condensation near the cool air discharge port or the cool air suction port also need to be simultaneously energized and controlled.

However, conventionally, only a fluorescent lamp switch or a dew-proof heater switch is provided for each showcase, so that the electric devices such as a fluorescent lamp and a dew-proof heater of the plurality of showcases are energized. In order to control them simultaneously, the electrical equipment of each showcase is connected in parallel to the power supply at the installation site such as a store, and a new power switch is installed between these parallel circuits and the power supply. In addition to controlling the power supply to the electrical equipment in the showcase, wiring work at the installation site was extremely troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and provides a showcase in which a plurality of units can be connected to each other and wiring work can be easily performed at an installation site of the showcase. The purpose is to:

[0006]

That is, the showcase according to the first aspect of the present invention can be used by connecting a plurality of showcases, and the electric equipment provided in the showcase, and the electric equipment and the power supply are provided. The switch is provided between the switch and the switch to control the supply of electric power to the electric device, and a connection wire drawn from the electric device and the power supply of the switch.

[0007] The showcase according to the second aspect of the present invention comprises:
A fluorescent lamp provided in the showcase, which can be used by being connected to a plurality of fluorescent lamps, and a fluorescent lamp switch interposed between the fluorescent lamp and a power supply to control the energization of the fluorescent lamp,
It is characterized by comprising a fluorescent lamp side of the fluorescent lamp switch and a connecting electric wire drawn from a power supply. Further, the showcase according to the third aspect of the present invention can be used by connecting a plurality of the showcases. The showcase is provided with a dew-proof heater provided between the showcase and a power supply. It is characterized by comprising a dew-proof heater switch for controlling energization to the dew-proof heater, and a connecting wire drawn from the dew-proof heater side of the dew-proof heater switch and a power supply.

[0008]

According to the showcase of the first aspect of the present invention, a showcase that uses electric equipment under the same conditions is connected and installed, a parent showcase is connected to a power source, and a connecting wire is used. By electrically connecting the child showcase and the parent showcase, the power supply to the child showcase electrical device can be simultaneously controlled by the switch of the parent showcase. .

According to the showcase of the second aspect,
A showcase that turns on and off the fluorescent lamps at the same time is connected and installed, and the parent showcase is connected to the power supply, and the connecting show wire is used to electrically connect the child showcase and the parent showcase. The connection allows the fluorescent light switch of the parent showcase to simultaneously control the turning on and off of the fluorescent light of the child showcase.

According to the showcase of the third aspect of the invention,
A showcase that controls the energization of the dew heater at the same time is installed and connected, and the parent showcase is connected to the power supply, and the child showcase and the parent showcase are electrically connected using the connecting wires. , It is possible to simultaneously control energization of the dew-proof heater of the child showcase by the dew-proof heater switch of the parent showcase.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an electric circuit diagram showing a state in which a showcase 1 (parent) of the present invention is connected to a showcase 1A serving as a child, FIG. 2 is a front view of the showcase 1, and FIG. . 2 and 3, the showcase 1 is a so-called reach-in type low-temperature showcase, in which a partition plate 6 is provided inside a box-shaped heat-insulating wall 4 opened at the front to form a cold air passage 7 on the heat-insulating wall 4 side. , The storage room 8 inside it
Are sectioned. A cooler 9 included in the refrigerating apparatus, a blower 11 and a heater 12 for defrosting are disposed in the lower cool air passage 7. It communicates with 8. The cool air cooled by the cooler 9 is raised in the cool air passage 7 by the blower 11 and is discharged from the cool air discharge port 13 into the storage room 8, and the cool air circulated in the storage room 8 is discharged from the cool air suction port 14. It is sucked into the cool air passage 7. Thereby, the inside of the storage room 8 is cooled to a predetermined refrigeration or freezing temperature.

A plurality of shelves 16 are erected in the storage room 8, and the front openings thereof are closed by sliding doors 17, 17 so that they can be opened and closed. In addition, fluorescent lamps 18 for illumination are mounted vertically on both sides of the front opening in the storage room 8. Further, a front plate 19 is attached to the front end of the upper edge of the heat insulating wall 4 above the doors 17 and 17 across the left and right, and a raceway is located between the front plate 19 and the heat insulating wall 4. 2 is attached to the front of the heat insulating wall 4 across the left and right.

In FIG. 1, the right side of the dashed line is the electric circuit of the parent showcase 1, and the left side is the electric circuit of the child showcase 1A. The raceway 2 is provided with the terminal boards 21 and 22 of FIG. 1. The power supply side of the terminal boards 21 and 22 of the parent showcase 1 is short-circuited by a short bar. Terminal boards 21 and 2
An electrical device 23 such as a fluorescent lamp 18 or a dew-proof heater described later is connected to the device side of the first terminal No. 2 via connectors 24 and 25, and a switch is provided between the connector 25 and the terminal plate 21. 26 are interposed. The switch 26 is provided on the operation panel 32 of the front panel 19. From the electrical device 23 side of the switch 26 of the parent showcase 1 and the device side of the first terminal of the terminal plate 22, connection wires 28 having a connector 27 at one end are drawn out. Further, in the showcase 1, transition wires 30, 30 having a connector 29 connected to the connector 27 at one end are provided and placed.

With the above configuration, each of the showcases 1 and 1A is connected and installed in the store, and the single-phase AC 10 is connected to the power supply side of the first terminal of the terminal plates 21 and 22 of the parent showcase 1.
Connect 0V power supply AC. Next, the connectors 29 of the crossover wires 30, 30 are connected to the connectors 27 of the connecting wires 28, 28, and the other ends of the crossover wires 30, 30 are passed to the child showcase 1A, and the terminal plates 21, 22 thereof are connected. To the power supply side of the No. 1 terminal. Also, the power supply side terminals of the terminal boards 21 and 22 of the showcase 1A serving as a child are not short-circuited, and the switch 2
6 is left closed.

By the opening and closing operation of the switch 26 of the parent showcase 1 by such wiring connection, the energization of the electric devices 23, 23 of both the showcase 1 and 1A can be controlled simultaneously. At this time, since it is not necessary to newly provide a power supply switch at the installation site as in the related art, the wiring work at the installation site becomes extremely easy. Further, by providing the connecting wires 30, 30 in the showcase 1 as in the embodiment, it is not necessary to prepare the connecting wires at the installation site.

Next, FIG. 4 shows a fluorescent lamp 1 as the electric equipment 23.
8 shows an electric circuit diagram of the showcase 1 as a parent when 8 is connected. In the drawing, components having the same reference numerals as those in FIG. 1 are the same. In this case, two fluorescent lamps 18 are used and connected to the ballasts 34, 34, respectively, and the respective ballasts 34, 3
4 are connected in parallel and connected to the connector 24. The connector 25 to which the connector 24 is connected is the terminal plate 2.
Terminals 1 and 22 are connected to the device side. Furthermore, 3
Reference numerals 5 and 35 are terminals for switching between 50 Hz and 60 Hz.

On the other hand, the switch 26 is a fluorescent light switch 26.
A, and turning on and off of the fluorescent lamps 18 and 18 is controlled by opening and closing the fluorescent lamp switch 26A. In addition, as described above, the wiring 3
0, 30 connectors 29, and connecting wires 30, 30.
Is connected to the power supply side of the first terminal of the terminal plates 21 and 22 of the showcase 1A, which is a child (not shown in FIG. 4). The fluorescent lamp 1 of the showcase 1A serving as a child
8 is connected to the terminal plates 21 and 22 by the same connection as in FIG. The fluorescent lamps 18 of the showcases 1 and 1A connected by such a configuration can be simultaneously turned on and off by operating the fluorescent lamp switch 26A of the showcase 1.

Next, FIG. 5 shows the electric equipment 23 as a parent when a dew-proof heater 37 provided in the showcases 1 and 1A is connected to prevent dew condensation near the cool air discharge port 13 and the cool air suction port 14. 1 shows an electric circuit diagram of the showcase 1 of FIG. In the drawing, components having the same reference numerals as those in FIG. 1 are the same. In this case, the dew-proof heater 37 is connected to the connector 24, and the connector 25 to which the connector 24 is connected is connected to the terminal boards 21, 2.
2 terminal 2 is connected to the device side.

On the other hand, the switch 26 becomes a dew-proof heater switch 26B, and the energization of the dew-proof heater 37 is controlled by opening and closing the dew-proof heater switch 26B. In the same manner as described above, the connectors 29 of the connecting wires 30, 30 are connected to the connectors 27 of the connecting wires 28, 28, and the connecting wires 30, 3 are connected.
The fork terminal at the other end of the terminal 0 is connected to the power supply side of the second terminal of the terminal plates 21 and 22 of the showcase 1A as a child (not shown in FIG. 5). Note that the dew-proof heater 37 of the showcase 1A serving as a child is also connected to the terminal plates 21 and 22 in the same connection as in FIG. With such a configuration, the energization control of the dew-proof heaters 37 of the showcases 1 and 1A connected together by the operation of the dew-proof heater 26B of the showcase 1 can be performed simultaneously.

By providing the connecting wires 28 and 28 and the crossover wires 30 and 30 also in the showcase 1A which is a child of the embodiment, simultaneous control of three or more showcases can be realized. Needless to say. Also,
In the embodiment, the fluorescent lamp 18 and the dew-proof heater 37 have been described as examples of the electric device 23. However, the present invention is not limited to this, and the present invention is effective as long as it is controlled simultaneously in a connected showcase. Further, although the embodiment shows the reach-in type showcase, the present invention is not limited thereto, and the present invention is effective even when applied to a so-called open showcase.

[0021]

As described above in detail, according to the first aspect of the present invention, a showcase that uses electrical equipment under the same conditions is connected and installed, and a parent showcase is connected to a power source and connected. By electrically connecting the child showcase and the parent showcase using electrical wires,
The power supply to the electrical equipment of the child showcase can be simultaneously controlled by the switch of the parent showcase. Therefore, it is possible to realize simultaneous control of electrical equipment in all showcases by simply connecting a plurality of showcases using connecting wires without providing a new power switch, etc., significantly improving wiring workability at the installation site. Can be improved.

According to the second aspect of the present invention, a showcase for simultaneously turning on and off the fluorescent lamp is connected and installed, the parent showcase is connected to a power source, and the child is connected to the child using a connecting wire. By electrically connecting the showcase to the parent and the showcase to be the parent, the fluorescent switch of the parent showcase can simultaneously control the turning on and off of the fluorescent light of the child showcase. Become. Therefore, it is possible to turn on and off the fluorescent lamps of all showcases at the same time by simply connecting a plurality of showcases using connecting wires without installing a new power switch for fluorescent lamps. Workability can be significantly improved.

Further, according to the third aspect of the present invention, a showcase that simultaneously controls the energization of the dew-proof heaters is connected and installed, and the parent showcase is connected to a power source, and the child case is connected using a connecting wire. By electrically connecting the parent showcase and the parent showcase, the energization of the child showcase's anti-dew heater can be controlled simultaneously by the parent showcase's anti-dew heater switch. Become like Therefore, it is possible to control the simultaneous energization of the dew-proof heaters of all showcases by simply connecting a plurality of showcases using the connecting wires without newly providing a power switch for the dew-proof heaters. Can be significantly improved.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of a state in which a parent showcase of the present invention is connected to a child showcase.

FIG. 2 is a front view of the showcase.

FIG. 3 is a vertical sectional side view of the showcase.

FIG. 4 is an electric circuit diagram of a showcase when a fluorescent lamp is connected as an electric device.

FIG. 5 is an electric circuit diagram of a showcase when a dew-proof heater is connected as an electric device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Showcase (parent) 1A Showcase (child) 18 Fluorescent lamp 21 Terminal board 22 Terminal board 23 Electric equipment 26 Switch 26A Fluorescent lamp switch 26B Dew-proof heater switch 28 Connecting wire 37 Dew-proof heater

Continuation of front page (56) References JP-A-5-237026 (JP, A) JP-A-6-3015 (JP, A) JP-A-5-64690 (JP, A) , U) Fully open 1979-514074 (JP, U) Fully open 1986-200591 (JP, U) Fully open 1986-145289 (JP, U) Fully open 1986-195300 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 11/00-31/00

Claims (3)

(57) [Claims] 1. A showcase that can be used by being connected to a plurality of units, an electric device provided in the showcase, and a switch interposed between the electric device and a power supply for controlling energization of the electric device. And a connection wire drawn from the electric device side of the switch and the power supply. 2. A showcase which can be used by being connected to a plurality of units, comprising: a fluorescent lamp provided in the showcase;
A fluorescent lamp switch interposed between the fluorescent lamp and a power supply for controlling energization of the fluorescent lamp; and a connecting wire drawn from the fluorescent lamp side of the fluorescent lamp switch and the power supply. Showcase that features. 3. In a showcase that can be used by connecting a plurality of units, a dew-proof heater provided in the show case, and a power supply to the dew-proof heater interposed between the dew-proof heater and a power supply. A showcase, comprising: a dew-proof heater switch to be controlled; and a connection wire drawn from the power source and the dew-proof heater side of the dew-proof heater switch.