JP2002147945A - Freezing and refrigerating reach-in showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a freezing and refrigerating reach-in showcase with high reliability in which a cooling load is hardly applied to the showcase, an optical output is steadily carried out even in a low temperature environment and an interior illumination whose life can be maintained long is provided. SOLUTION: In the freezing and refrigerating showcase having a storage chamber for goods, a plurality of light emitting diodes 12 longitudinally arranged at substantially equal intervals on an elongated plate type base 11 are used as the interior illumination for lighting the storage chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a freezing / freezing system which is installed in a store such as a supermarket or a convenience store.
The present invention relates to a reach-in showcase for displaying and selling chilled products such as refrigerated foods and fresh foods, and more particularly to a refrigerated / refrigerated reach-in showcase using light emitting diodes as interior lighting.

[0002]

2. Description of the Related Art Closed-type reach-in showcases having a transparent glass door in front of a main body case are widely used as refrigerated / refrigerated showcases for handling chilled products. In addition, a sliding back door is provided on the back side of the showcase so that products can be supplied to the reach-in showcase directly from the back yard of the store (workshop where products are processed and stored) without going to the front sales floor. There is also a device provided with the above. In the front opening of such a reach-in showcase, side supports on both sides and at least one or more middle supports therebetween are erected, and each of a plurality of openings formed by being divided by this support is provided. Display shelves on which products are placed are arranged side by side in a space inside the case corresponding to the above, and these display shelves are arranged in multiple stages. In addition, a slim fluorescent lamp mounted behind a side support or a middle support erected inside the see-through door is usually used for interior lighting of this type of reach-in showcase.

[0003]

The slim fluorescent lamp has an important role in improving the display and sales effect of food. However, the slim fluorescent lamp conventionally used in a reach-in showcase is not a slim fluorescent lamp. However, there were the following problems. (1) Since the lamp is a special lamp, the lamp and the ballast are expensive, and the maintenance cost due to lamp replacement is high. (2) This ballast has to be wired in accordance with the frequency of the area where it is used, and extra work is required. (3) Heat generated from the fluorescent lamp becomes a cooling load. (4) The wiring distance from the ballast to the fluorescent lamp needs to be long, and the cost of the harness is high. (5) It is necessary to design a showcase in consideration of ballast maintenance, and the installation place is limited. (6) The fluorescent lamp is housed in a transparent cylinder for heat retention and breakage protection, and requires a relatively large storage space. (7) Fluorescent lamps require a high tube voltage due to their structure. (8) In the case of a fluorescent lamp, there is a problem that there is no directivity and the area near the lamp is bright. Therefore, a device for improving the directivity is required, and an extra cost is required. (9) The fluorescent lamp has a glass tube filled with mercury and an inert gas, and requires careful handling different from general industrial waste. (10) In particular, in the case of the refrigerated reach-in case, since the lamp is in a low-temperature environment, it takes time for the lamp to stabilize after starting, sufficient light output is not achieved even after the lamp is stabilized, and the lamp life is short. Also, the lamp may not be able to start at low voltage due to the low temperature environment.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide an inexpensive and highly reliable cooling device that hardly applies a cooling load to a showcase and is stable even in a low-temperature environment. An object of the present invention is to provide a refrigerator / refrigerated reach-in showcase provided with interior lighting capable of outputting light and maintaining a long life of the lighting.

[0005]

In order to solve the above-mentioned problems, a refrigerated / refrigerated reach-in showcase according to the present invention comprises:
A plurality of light-emitting diodes (LEDs) arranged on the elongated plate-like substrate at substantially equal intervals in the longitudinal direction are used as interior lighting for irradiating the storage room. This light-emitting diode (LED) emits light by applying a voltage to a crystal, and the color of light differs depending on the type of crystal, an additive, and the voltage applied thereto. Red, orange, yellow, blue, green,
It emits light such as white. For example, gallium arsenide is infrared and gallium phosphorus is red to yellow. From the viewpoint of interior lighting of a showcase, the LE used in the present invention is used.
D is preferably white.

According to the present invention, since the heat generated from the LED is very small, the cooling load of the showcase is reduced. In addition, although LEDs need to be driven by converting AC to DC, they are directly connected to a power supply and do not require a ballast, so wires for harnesses can be simplified, and the ballast used in conventional fluorescent lamps can be used. No maintenance is required. Further, the storage space for the ballast is not required, and the degree of freedom in designing can be increased. Since the LED itself has a small size of rice grain, the plate-like substrate for mounting the LED can be designed with a smaller size than before, and the cylindrical body to be housed can be made thinner, so that the effective size in the refrigerator is increased accordingly. be able to. In addition, since LEDs have directivity, it is possible to make the distance from the light source as bright as near the light source,
It is possible to make the illuminance in the refrigerator uniform. Since the LED does not change its light output due to the ambient temperature, it can be stably turned on immediately after starting even in a low-temperature environment, and can achieve about three times longer life than a conventional slim fluorescent lamp.
In addition, even in a low-temperature environment, there is no change in the light output due to the ambient temperature, so that stable lighting can be performed immediately after starting. Highly reliable.

Further, in the present invention, the freezing / refrigerating reach-in-showcase can be easily detached by connecting the LED and the power supply via a waterproof connector.
It is characterized in that the plate-like substrate on which D is arranged is housed in a transparent cylindrical body, and both ends of the cylindrical body are closed with waterproof packing. In addition, a wiring hole is formed in at least one of the waterproof packing covering both ends of the cylindrical body, and an LED is inserted through the wiring hole.
Is extended and connected to the power line on the showcase side. This facilitates the handling of attachment and detachment, and also facilitates maintenance such as replacement. Further, the transparent cylinder can prevent the occurrence of breakage accident due to the collision of the product.

In addition, an insertion groove for inserting and fixing the end of the stored plate-like substrate with the LED therein is formed inside the waterproof packing covering both ends of the cylindrical body, so that the LED housed in the cylindrical body is formed. The irradiation direction can be set in a predetermined direction, and irradiation can be performed by utilizing the directivity of the LED.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a refrigerated / refrigerated reach in showcase of the present invention using a light emitting diode (LED) for interior lighting, FIG. 2 is a sectional side view thereof, FIG. 3 is a sectional plan view thereof, and FIG. FIG. 5 is a perspective view showing a mounting state of light-emitting diode lighting (LED lighting).
FIG. 6 is an exploded perspective view showing the structure of the LED lighting, FIG. 6 is a perspective view for explaining how the lower waterproof packing of the LED lighting is attached, and FIG. 7 is a wiring diagram of the LED lighting.

As shown in FIGS. 1 to 3, the LED of the present invention
A reach-in showcase 1 using lighting is composed of a box-shaped heat-insulating case body 2 having a front opening, and an open-door glass see-through door 3 covering the front opening.
The inside is cooled by the cooler 4 and kept cool by the cool air circulated by the blower fan 5. On the inside of the front surface of the reach-in showcase 1, side supports 6, 6 on both sides and at least one or more middle supports 7 between them are erected.
The display shelves 8 on which products are placed are arranged side by side in the case inner space portion (storage room 2a) corresponding to each of the plurality of openings formed by dividing the display shelves. They are arranged in multiple stages.

In the present invention, as the interior lighting of the reach-in showcase 1, an LED lighting 10 mounted inside the columns 6, 7 is used. FIG.
Shows a state in which the LED lighting 10 is attached to the back side of the middle support 7. A lamp holder 9 is provided along the middle support 7, and the LED lighting 10 is fitted into the lamp holder 9 and attached in the longitudinal direction. At this time, since the LED lighting 10 has directivity, the LED lighting 10 is attached toward the center of each display shelf 8. In addition, the side support 6 is similarly attached.

FIG. 5 is an exploded perspective view of the LED lighting device 10. A plurality of light-emitting diodes (LEDs) 12 are fixed to a long and thin plate-like substrate 11 corresponding to the length of a shelf support to be mounted at substantially equal intervals in the longitudinal direction. These are connected by a wiring 13, the wiring 13 is extended through a wiring hole formed in the upper waterproof packing 14, and a waterproof connector 15 a is attached to a leading end of the wiring. By connecting this to the waterproof connector 15b attached to the tip of the power line 16 on the showcase side, the LED 12 can emit light. And
This LED lighting 10 is connected to a transparent cylindrical body 1 serving as its cover.
7, the upper cylindrical opening is closed by the upper waterproof packing 14, and the lower opening is closed by the lower waterproof packing 18, thereby completing the assembly of the LED lighting 10. At this time, since the LED 12 has directivity, the plate-shaped substrate 11 on which the LED 12 is fixed can be fixed in a certain direction.
Inside the upper and lower waterproof packings 14 and 18,
An insertion groove 19 is provided for inserting the end portion 1 (see FIG. 6). FIG. 6 shows an example of the LED lighting 10 attached to the inside (back side) of the middle support 7. The two plate-like substrates 1 are arranged so that the left and right display shelves 8 can be evenly illuminated from the back of the middle support 7.
A V-shaped insertion groove 19 for inserting the first and the first 11 is provided.

With the two ends of the plate-like substrate 11 inserted into the insertion grooves 19, the waterproof caps 14 and 18 are attached to the cylindrical body 1.
Fit into 7. The LED 12 on the plate-like substrate 11 is set on the lamp holder of the column such that the LED 12 faces the center of the display shelf 8. If the directivity of the LED is used in this manner, it is possible to make the distant light source have the same brightness as the vicinity of the light source, and to achieve uniform illuminance in the refrigerator. The LED lighting 10 is connected by waterproof connectors 15a and 15b, thereby
When the ED lighting 10 is replaced or maintenance is performed, the LED lighting 10 can be easily removed, which is convenient. The LED lights 10, 10 mounted on both sides of the showcase house a single plate-shaped substrate 11 in a transparent cylindrical body 17, and store the left and right storage chambers 2a,
The upper and lower ends are sealed with waterproof packings 14 and 18 in a V-shape facing the center of 2a, and attached to the back side of the side supports 6 and 6 on both sides of the showcase.

FIG. 7 shows an LED lighting 1 constructed as described above.
In the wiring diagram of No. 0, the LED lighting 10 containing two LED mounting plate-shaped substrates is disposed in the center, and the LED lightings 10 and 10 storing one LED mounting plate-shaped substrate are disposed on the left and right sides, respectively. These are connected to the power supply line 16 by the waterproof
a and 15b are connected in parallel. This L
Since the ED 12 is driven by DC, each LE
On the D mounting board, the conversion element converts AC into DC. Note that the LED lighting 10 containing the two LED mounting boards is located behind the middle support 7 of the showcase.
Also, an LED lighting 10 containing one LED mounting board
Are attached to the back side of the side columns 6, 6 on both sides of the showcase, respectively, and illuminate the storage room in the refrigerator (see FIG. 3).

In this embodiment, the perspective door is a two-door door type, but it may be a sliding door type or a three-door type. There is no limitation on the type or number of doors. In this embodiment, a closed-type reach-in showcase with a closed back is used. However, the supply of goods to the reach-in showcase does not go to the front sales floor, but the back yard of the store (for processing and storing goods). A slide-type back door or cover may be used on the back side of the showcase so that it can be directly operated from the workplace.

[0016]

As described above, the refrigerator / refrigerated reach-in-showcase of the present invention uses a plurality of light-emitting diodes (LEDs) arranged at substantially equal intervals in the longitudinal direction on an elongated plate-like substrate as interior lighting. Therefore, the following excellent operational effects can be obtained. (1) Since the heat generated from the LEDs is very small, the cooling load on the showcase is reduced. (2) Since the LED is directly connected to the power supply and does not require a ballast, the wires of the harnesses are simplified and the maintenance of the ballast is released. Further, the conventional ballast storage space is not required, and the degree of freedom in designing can be increased. Further, the problem of generating a high secondary voltage as in a ballast is eliminated, and safety is improved. (3) Unlike the fluorescent lamp, the LED can be used irrespective of the power supply frequency, so that there is no need to perform wiring conscious of the frequency in the area, and no extra work is required. (4) Since the LED itself has a small size of rice grains, a plate-like substrate for mounting the LED can be designed with a smaller size than before, and by further reducing the cylindrical body to be stored,
The effective size in the refrigerator can be increased. (5) By utilizing the directivity of the LED, the distance from the light source can be made equal to the brightness near the light source, and the illuminance in the refrigerator can be made uniform. Since the LED itself is small in size of rice grains, it is possible to design the plate-like substrate for mounting the LED in a small size, and it is also possible to make the cylindrical body to be stored thinner, and to increase the effective size in the refrigerator. Can also. (6) Disposal is easy because mercury and inert gas such as fluorescent lamps are not used. (7) Since there is no change in light output due to the ambient temperature, stable lighting can be performed immediately after starting even in a low-temperature environment. (8) Compared with the conventional slim-type fluorescent lamp, the life can be extended by about three times, and even in a low-temperature environment, there is no change in light output due to the ambient temperature. Becomes possible. (9) Since the LED emits light even at a low voltage, there is no problem that the LED does not emit light at a low voltage unlike a fluorescent lamp.

[Brief description of the drawings]

FIG. 1 is a perspective view of a refrigerated / refrigerated reach in showcase of the present invention using a light emitting diode (LED) for interior lighting.

FIG. 2 is a sectional side view thereof.

FIG. 3 is a sectional plan view thereof.

FIG. 4 is a perspective view showing an attachment state of LED lighting to a support.

FIG. 5 is an exploded perspective view showing the structure of the LED lighting.

FIG. 6 is a perspective explanatory view of a mounting state of a lower waterproof packing of the LED lighting.

FIG. 7 is a wiring diagram of LED lighting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reach-in showcase 2 Case main body 3 Perspective door 4 Cooler 5 Blower fan 6 Side support 7 Middle support 8 Display shelf 9 Lamp holder 10 Light-emitting diode lighting (LED lighting) 11 Plate substrate 12 Light-emitting diode (LED) 13 Wiring 14 Upper part Waterproof packing 15a Waterproof connector (LED lighting side) 15b Waterproof connector (power line side) 16 Showcase side power line 17 Transparent cylinder 18 Lower waterproof packing 19 Insertion groove

Claims (4)

[Claims] 1. A refrigerator / refrigerated showcase provided with a storage room for commodities, as interior lighting for irradiating the storage room.
A refrigerated / refrigerated reach showcase comprising a plurality of light-emitting diodes arranged at predetermined intervals in a longitudinal direction on an elongated plate-like substrate. 2. A plate-like substrate on which a plurality of light-emitting diodes are arranged is housed in a transparent cylindrical body, and both ends of the cylindrical body are closed with waterproof packing, and light-emitting diodes are inserted through wiring holes formed in the waterproof packing. 2. The wiring according to claim 1, wherein the wiring is extended and connected to a power supply line on the showcase side.
The described frozen / refrigerated reach-in showcase. 3. The refrigerated / refrigerated reach-in showcase according to claim 1, wherein the connection between the light emitting diode and the power supply on the showcase side is made via a waterproof connector which is easily detachable. 4. An insertion groove for inserting and fixing an end of a light-emitting diode-equipped plate-shaped substrate housed inside the cylindrical body is formed inside a waterproof packing covering both ends of the cylindrical body. The refrigerated reach-in showcase according to claim 2 or 3, wherein