JP6695258B2 - Refrigerated storage - Google Patents

Description

  The present invention relates to a cooling storage, and more particularly, to an improvement of a light emitting unit that illuminates a storage chamber in the cooling storage.

  BACKGROUND ART Cooling storages having a storage room for storing various foods in a refrigerated state are widely used in the food industry. For example, FIG. 6 shows a cooling storage 10 which is installed at a counter of a sushi restaurant and refrigerates fresh foods such as sushi ingredients in a display state, that is, a so-called neta case. The cooling storage 10 is provided with a horizontally elongated heat insulating box 14 having a storage chamber 12 capable of storing food such as sushi and the like, and is provided on the front surface of the heat insulating box 14 so that the storage chamber 12 can be visually recognized from the outside. A windshield 16 to be obtained, an evaporator 18 disposed above the storage chamber 12 and supplied with a refrigerant from a refrigeration system, and an illumination disposed above the storage chamber 12 to illuminate the storage chamber 12. It is basically composed of the unit 20.

  As a light emitting source of the lighting unit 20, a straight tube type fluorescent lamp has been used before, but due to advantages such as high economic efficiency of power consumption, low heat generation and high luminous intensity, a light emitting diode ( (Hereinafter referred to as "LED"). As the lighting unit 20 using the LED as a light emitting source, a straight tube type having an outer shape substantially similar to that of a conventional fluorescent tube is often adopted. This straight-tube type LED lighting unit has both ends of the straight-tube lighting unit known to the public, as in the case of a conventional fluorescent tube, for the convenience of being attached to the upper part of the storage chamber 12 and the convenience of connecting to a power source. It is designed to be supported by a socket.

JP, 2005-146919, A

  However, in the structure in which both ends of the above-mentioned straight tube type LED lighting unit are attached to the upper part of the storage chamber 12 by a pair of sockets, there is a problem that the existence of the sockets occupies a large space. Further, the room temperature of the storage room 12 of the cooling storage 10 rises slightly due to the outside air entering by opening and closing the door, for example, and falls due to cooling. Therefore, moisture contained in the air in the storage chamber may be condensed and condensed, and water droplets may infiltrate into the connection portion of the socket, resulting in an electrical failure. Therefore, it has been proposed that a desiccant is placed inside the storage chamber so that the moisture contained in the internal air is absorbed by the desiccant. However, there are drawbacks such that the structure for accommodating the desiccant becomes complicated and the cost increases, and the absorbability is not so good.

  The present invention has been proposed in order to suitably solve the above-mentioned drawbacks in which the conventional LED lighting unit is inherently provided, and a desiccant is stably applied to the hollow tubular member together with the LED substrate. It is an object of the present invention to provide a structure that can be compactly accommodated.

In order to solve the above problems and achieve the intended purpose, the invention of claim 1
A heat-insulating box body having a storage chamber for articles defined therein, an evaporator that cools the storage chamber, and a cooling storage unit that includes a lighting unit of a light emitting diode that illuminates the storage chamber,
The lighting unit of the light emitting diode is composed of a long substrate in which a large number of light emitting diode elements are arranged, and a light-transmissive hollow cylindrical member that completely houses the long substrate,
The hollow cylindrical member includes a first housing portion for accommodating the elongate substrate by a partition wall erected therein, is partitioned into a second storage unit for storing a desiccant,
The gist is that a communication part that spatially communicates the first storage part and the second storage part is formed over the first storage part, the second storage part, and the partition wall .
According to the first aspect of the present invention, the desiccant can also be accommodated in the hollow cylindrical member, and the communication section that spatially communicates the first storage section and the second storage section is the first storage section. Since it is formed over the second storage portion and the partition wall, the hollow cylindrical member can be maintained in a dry state.

According to a second aspect of the present invention, a pair of guide portions facing each other with at least a width dimension of the long substrate is formed in the first storage portion that stores the long substrate. To do.
According to the invention of claim 2, the long substrate on which a large number of light emitting diode elements are arranged can be held by the pair of guide portions, and the long substrate is inserted into the hollow cylindrical member along the guide portions. Because it is possible, work becomes easy.

In the invention according to claim 3, the gist is that the hollow cylindrical member is an extrusion molded product made of synthetic resin.
According to the third aspect of the present invention, it is possible to easily integrally form the first storage portion that stores the long substrate and the second storage portion that stores the desiccant by extrusion molding.

In the invention according to claim 4, the gist is that the desiccant is stored in a long container having a through hole, and the long container is stored in the second storage portion.
According to the invention of claim 4, since the desiccants of various shapes are used in the state of being accommodated in the long container, it is possible to easily perform the work of regularly exchanging the desiccant.

  In the invention according to claim 5, the hollow cylindrical member seals a first cap for sealing one opening of the hollow cylindrical member and the other opening of the hollow cylindrical member, and is connected to the light emitting diode element. The gist of the present invention is to have a second cap having a lead wire outlet.

  According to the cooling storage according to the present invention, when the long substrate on which the light emitting diode elements are arranged is housed in the hollow cylindrical member, the desiccant can be housed in the hollow cylindrical member. Therefore, even when the temperature of the storage chamber fluctuates and dew condensation may occur on the hollow cylindrical member, dew condensation does not occur because the desiccant absorbs moisture.

(a) is a cross-sectional perspective view showing the hollow cylindrical member according to the present invention in a transparent state, showing a state in which an opening at one end is sealed with a first cap, and (b) is a view of the first cap. It is a perspective view. (a) is a perspective view showing a state in which the opening at the other end is sealed with a second cap in the hollow tubular member shown in FIG. 1, and (b) is a perspective view of the second cap. It is a vertical perspective view of the cooling storehouse concerning the present invention. FIG. 4 is an enlarged perspective view of a portion surrounded by a circle A in FIG. 3. It is the sectional view on the AA line of the hollow cylindrical member shown in FIG. It is a partially broken perspective view which shows the neta case installed in a sushi restaurant as an example of a cooling storage. It is the sectional view on the AA line of the neta case shown in FIG.

  Embodiments of a cooling storage according to the present invention will be described below with reference to the accompanying drawings. The same members as those described in regard to the cooling storage shown in FIGS. 6 and 7 are designated by the same reference numerals. Further, as the cooling storage, the illustrated example cites a so-called neta case of a sushi restaurant, but the present invention is not limited to this, for example, a refrigerated showcase with a door used in a food counter such as a supermarket, It may be a normal cold storage.

  The lighting unit 20 according to the embodiment of the present invention is, as shown in FIGS. 1A and 2A, a light-transmissive hollow cylindrical member 22 and a hollow cylindrical member 22 that is entirely housed inside. A long substrate 24, a first cap 26 (see FIG. 1 (b)) for sealing (sealing) one opening of the hollow tubular member 22, and the other opening of the hollow tubular member 22. And a second cap 30 (see FIG. 2B) having a lead-out port 28 for connecting the lead wires 54 connected to a large number of LED elements arranged on the long substrate 24. That is, the hollow cylindrical member 22 is formed by extruding the synthetic resin by using a transparent or semitransparent synthetic resin as a base material that allows light from the LED elements arranged on the long substrate 24 to pass therethrough with minimal loss. Then, for example, as shown in FIG. 5, the inside has a sectional shape divided into two housing portions (described later). The hollow tubular member 22 may be entirely light transmissive, or may be light transmissive only on the surface facing the storage chamber 12. For example, when a synthetic resin is extruded and molded to obtain a single product, a technique has been already established in which the other part has a light-transmitting property while the other part has a light-transmitting property. Therefore, when the extrusion molding is performed, only the surface of the hollow cylindrical member 22 on the storage chamber side may be transparent or semitransparent, and the other surface may be an opaque light-shielding surface colored black, for example. Alternatively, the hollow cylindrical member 22 may be formed by combining a half body made of a transparent or semi-transparent material and a half body made of an opaque material on the side of the storage chamber.

  The opening at one end of the hollow tubular member 22 is sealed by closely fitting the first cap 26 shown in FIG. 1 (b). The opening at the other end of the hollow tubular member 22 is sealed by closely fitting a second cap 30 shown in FIG. 2B. The second cap 30 is provided with an outlet 28 for drawing out the lead wire 54 electrically connected to the LED element of the long substrate 24 housed in the hollow tubular member 22. Here, the outlet 28 is filled with a closed plug 56 made of, for example, rubber or caulking agent, and the lead wire 54 is drawn out from the closed plug 56 in a watertight manner, for example, a machine adjacent to the storage chamber 12. It is connected to the control power supply of the room (not shown).

  The long substrate 24 housed in the hollow cylindrical member 22 is a long rectangular plate body made of an electrically insulating material as shown in FIGS. 2 (a) and 5, for example. A large number of LED elements 32 are arranged in rows at predetermined intervals on one surface (lower surface in FIG. 5) of the substrate 24. Further, the lead wires 54 connected to the LED elements 32 are led out to the outside via the lead-out port 28 of the second cap 30 in the hollow tubular member 22, as described above.

  The elongated substrate 24 is accommodated inside the hollow cylindrical member 22 by being inserted in the first accommodating portion 34 of the hollow cylindrical member 22 shown in cross section in FIG. 5 in the longitudinal direction. That is, as shown in FIG. 5, the inside of the hollow cylindrical member 22 is divided by a partition 42 that is erected to the left to stand upright. It is partitioned into a second storage section 40 for storing the agent 38. A pair of rail-shaped guide portions 44, 44 are formed in the first storage portion 34 so as to face each other, and are separated from each other by a dimension slightly larger than the width dimension of the long board 24. Further, each of the rail-shaped guide portions 44 has a pair of tongue pieces 44a, 44a that are vertically separated from each other in FIG. 5 and extend slightly horizontally, and both end portions in the longitudinal direction of the long substrate 24. Is inserted between the pair of tongue pieces 44a, 44a, so that the tongue pieces 44a, 44a are stably held in the first storage portion 34. At this time, the light emitting surface of the LED elements 32 arranged on the elongated substrate 24 is directed to the lower side of the first storage portion 34, so that the storage chamber 12 can be efficiently illuminated. Further, the first storage portion 34 and the second storage portion 40 are spatially connected to each other inside the hollow cylindrical member 22 in a relationship with a desiccant 38 described later.

As described above, external heat enters the storage chamber 12 of the cooling storage box 10 by opening and closing the door, and the cooling temperature of the storage chamber 12 rises or drops by cooling, though slightly. For this reason, even if the hollow tubular member 22 is sealed, there is a possibility that dew will form on the inner wall surface of the hollow tubular member 22 or the LED element 32 of the long substrate 24 to attach moisture. In consideration of this possibility, it is preferable that the desiccant 38 be provided inside the hollow cylindrical member 22 to absorb the moisture and maintain the storage chamber 12 in a dry state. For this purpose, the desiccant 38 is stored in a long container 46 as shown in FIGS. 1 (a) and 5, and the long container 46 is inserted into the second storage portion 40 in the longitudinal direction. ing. In this case, a large number of through holes 58 are formed at the top of the long container 46 that stores the desiccant 38, and the first storage portion 34 and the second storage portion 40 are spatially connected to each other as described above. Therefore, the first storage portion 34 of the hollow cylindrical member 22 is kept in a dry state, and therefore, there is no fear of damage to the electric system due to dew condensation. As the desiccant 38, silica gel or molecular sieve in the form of pellets or tablets is used, but it may also be in the form of a sheet having a moisture absorbing part in the form of a plate.

  The hollow cylindrical member 22 containing the long substrate 24 and the desiccant 38 is, as shown in FIG. 4, a long rail-shaped holding formed on a top frame 50 that supports the top plate 48 of the neta case 10 from the inside. It is inserted into the portion 52 and attached above the storage chamber 12. Therefore, when the lighting unit 20 is attached to the storage chamber 12 or when the lighting unit 20 is taken out of the storage chamber 12 for maintenance, the work can be easily performed.

12 storage room, 14 heat insulation box, 18 evaporator, 20 lighting unit,
22 hollow cylindrical member, 24 long substrate, 26 first cap, 28 outlet,
30 2nd cap, 32 LED element (light emitting diode element), 34 1st storage part,
44 guide part, 38 desiccant, 40 second storage part , 42 partition wall , 46 long container,
54 lead wire, 58 through hole , 60 communication part

Claims (5)

An insulating box body (14) having an article storage chamber (12) defined therein, an evaporator (18) for cooling the storage chamber (12), and a light emitting diode for illuminating the storage chamber (12). In the cooling storage consisting of the lighting unit (20),
The light emitting diode illumination unit (20) is a long substrate (24) in which a large number of light emitting diode elements (32) are arranged, and a light-transmissive hollow cylindrical member (20) that completely houses the long substrate (24). 22) and
The hollow cylindrical member (22 ) includes a first storage section (34) for storing the long substrate (24) and a second storage section (38) for storing the desiccant (38) by a partition wall (42) provided upright therein. Partitioned with the storage section (40) ,
A communication part (60) for spatially communicating the first storage part (34) and the second storage part (40) includes a first storage part (34), a second storage part (40) and the partition wall (42). A cold storage characterized in that it is formed over the upper part of the . The first storage portion (34) for storing the long substrate (24) is provided with a pair of guide portions ( 44, 44 ) facing each other with at least a width dimension of the long substrate (24). The cold storage according to claim 1.   The cooling storage according to claim 1 or 2, wherein the hollow cylindrical member (22) is an extruded product made of synthetic resin.   The desiccant (38) is stored in a long container (46) having a through hole (58), and the long container (46) is stored in the second storage section (40). Cold storage.   The hollow tubular member (22) seals the first cap (26) that seals one opening of the hollow tubular member (22) and the other opening of the hollow tubular member (22), and the light emitting diode element (32). ) The cooling storage according to any one of claims 1 to 4, further comprising a second cap (30) having an outlet (28) for a lead wire (54) connected to the same.

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