JP2000116478A - Low-temperature showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-temperature showcase which is capable of reducing electric power consumption and a production cost and preventing the degradation in the illuminance in the upper part of the showcase by preventing the dew condensation in cold air blowoff ports without using heater for preventing the dew condensation. SOLUTION: This low-temperature showcase has fluorescent lamps 33 for illuminating the inside 5 of the showcase near the cold air blowoff ports 13a and 15a. The blowoff members 31a to 31c forming the cold air blowoff ports 13a and 15a are formed of light transparent materials. The illumination devices 33a to 33c are housed in the blowoff members 31a to 31c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature showcase having an illuminator for illuminating the inside of a refrigerator near a cool air outlet of a showcase body.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing the structure of the upper part of a conventional low-temperature showcase 51. As shown in FIG.

[0003] The low-temperature showcase 51 has an interior 53, and a plurality of display shelves (not shown) are arranged in the interior 53, and goods and the like are displayed on these display shelves.
The interior 53 is surrounded by an interior partition plate 55, and an inner cold air passage 59 and an outer cold air passage 61 separated from each other by a passage partition plate 57 are formed outside the interior partition plate 55. Reference numeral 63 denotes a heat insulating wall provided with a heat insulating material. A rectifier 67 for the inner layer is provided at the inner layer cool air outlet 65 at the end of the inner layer cool air passage 59, and a rectifier 71 for the outer layer is provided at the outer layer cool air outlet 69 at the end of the outer layer cool air passage 61. 67, 71 are support members (blow-out members) 73a-7
3c.

During the cooling operation, in the inner layer cooling passage 59, cool air cooled by a cooler (not shown) is guided in the direction of the solid line arrow, and then blown out through the rectifier 67 for the inner layer.
In the outer cold air passage 61, the inner cold air passage 59 is provided.
After the cold air higher than the cold air inside is guided in the direction of the dashed arrow,
It is blown out through the rectifier 71 for the outer layer.

The temperature of the center supporting member 73b in the figure is lowered by the cool air moving through the inner layer cool air passage 59, and the cool air blown out from the outer layer rectifier 71 has a relatively high temperature. When the cool air blown out from the container comes into contact with the support member 73b, the cool air is rapidly cooled, and dew condensation occurs on the support member 73b. The temperature of the support member 73c is also lowered by the cool air moving through the outer layer cool air passage 61, and the outside air on the front side of the support member 73c has a relatively high temperature. And the dew condensation occurs on the support member 73c.

In order to solve this problem, a support member 73 is required.
heaters 75b, 75c for preventing dew condensation inside b, 73c
Is inserted, and the dew condensation preventing heaters 75b and 75c are energized to raise the temperature of the rectifiers 67 and 71, thereby preventing dew condensation on the support members 73b and 73c.

Conventionally, a fluorescent lamp (illuminator) 79 is provided in the vicinity of the inner layer cold air outlet 65, that is, in the upper part 53a of the refrigerator, and at the lower surface of an over canopy 77 for accommodating a night cover (not shown) and the like. A fluorescent lamp 81 is provided, and the upper part 53a (on the uppermost display shelf) is illuminated by the fluorescent lamps 79, 81.

[0008]

However, in the above-described conventional low-temperature showcase 51, the support members 73b,
73c to prevent dew condensation.
Since b and 75c are provided, there is a problem that the power consumption is increased, the number of parts and the number of assembly steps are increased, and the manufacturing cost is increased.

The upper part 53a of the refrigerator is a space where the temperature is the lowest in the refrigerator 53, and the ambient temperature of the fluorescent lamp 79 is the lowest during the cooling operation, so that the illuminance of the fluorescent lamp 79 is also the lowest. The upper part of the refrigerator on the uppermost display shelf forms the largest space in the refrigerator 53, and furthermore, the upper part of the refrigerator 5
The fluorescent lamp 79 of 3a and the fluorescent lamp 81 of the over canopy 77 are located far from the uppermost display shelf. For these reasons, there is a problem that the upper part 53a in the refrigerator becomes relatively dark.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to reduce power consumption and manufacturing cost by preventing dew condensation at a cool air outlet without using a dew condensation prevention heater. It is another object of the present invention to provide a low-temperature showcase that can prevent the illuminance of the upper part of the refrigerator from lowering.

[0011]

According to the first aspect of the present invention,
In a low-temperature showcase provided with an illuminator for illuminating the inside of a refrigerator near a cool air outlet of a showcase main body, an outlet member forming the cool air outlet is formed of a light-transmitting material, and the light-transmitting material is used. The illuminator is housed inside the formed outlet member.

According to the present invention, since the temperature of the outlet member rises due to the radiant heat of the illuminator stored in the storage portion and the heat generated by the illuminator, it is possible to prevent dew condensation occurring near the cool air outlet. it can. Therefore, it is not necessary to provide a dew condensation prevention heater for preventing dew condensation on the outlet member, so that power consumption can be reduced and the number of parts and the number of assembly steps are reduced, so that the manufacturing cost of the low-temperature showcase can be reduced.

According to a second aspect of the present invention, in the first aspect of the invention, openings are provided at both ends of the outlet member, and these openings are closed by the sockets of the illuminator. .

According to the present invention, the socket of the illuminator functions as a lid for preventing cold air from entering the outlet member, and it is not necessary to provide a lid, so that the number of parts is reduced and cost is reduced. Can be.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a light dispersion section for dispersing the light path of the illuminator is provided on the front surface of the outlet member. is there.

According to the present invention, since the path of the light of the illuminator toward the front surface of the outlet member is dispersed by the light dispersing portion, the illuminator of the outlet member is not dazzled even when the illuminator of the outlet member is viewed from the front side of the showcase body. .

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, a light reflecting plate is provided above the outlet member.

According to the present invention, since the light reflecting plate guides the light of the illuminator toward the upper portion of the outlet member downward, that is, into the refrigerator,
The interior can be efficiently illuminated.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a low-temperature showcase according to the present embodiment. This low-temperature showcase 1
An opening 3 is provided on the front surface, and an interior 5 is provided behind the opening 3. In the cabinet 5, four stages of display shelves 7a to 7d are arranged, and goods (not shown) and the like are displayed on these display shelves 7a to 7d. Fluorescent lamps 9a to 9d are attached to the back surfaces of the display shelves 7a to 7d.
Illuminates the goods displayed underneath.

As shown in FIG. 2, the interior 5 is surrounded by an interior partition plate 11, and an inner cold air passage 13 and an outer cold air passage 15 are formed outside the interior partition plate 11. The inner-layer cold air passage 13 and the outer-layer cold air passage 15 are connected to a passage partition plate 17.
A heat insulating wall 19 provided with a heat insulating material is provided outside the outer layer cold air passage 15.

The lower inner cool air passage 13 and the lower outer cool air passage 15 are each provided with a blower 21 (arranged from the near side to the back in the figure). A cooler 23 is provided. A rectifier 25 for the inner layer is provided in the inner layer cold air outlet 13a of the upper inner layer cold air passage 13.
A rectifier 27 for the outer layer is provided at the outer layer cool air outlet 15a of the upper outer layer cool air passage 15. In addition, an over canopy 29 that accommodates a night cover (not shown) that closes the opening 3 and the like is provided at an upper portion of the front surface of the showcase body. This over canopy 29 is, as in the prior art,
Since it is not necessary to provide a fluorescent lamp on the lower surface, if a night cover or the like housed inside is housed in another part, it can be omitted.

In the inner layer cool air passage 13, cool air circulates in the direction of the solid arrow during the cooling operation. That is, the cool air cooled by the cooler 23 rises and is blown out along the opening 3 through the rectifier 25 for the inner layer, so that the cool air forms the inner layer air curtain A and cools the inside 5 of the refrigerator. The cool air is sucked into the inner layer cool air passage 13 through the inner layer cool air inlet 13b,
Return to the cooler 23 again. Further, the cool air having a higher temperature than the inner cool air passage 13 circulates also in the outer cool air passage 15 in the direction of the dotted arrow. The cool air is blown out through the outer layer rectifier 27 to form the outer layer air curtain B, and is sucked into the outer layer cool air passage 15 through the outer layer cool air inlet 15b. The outer air curtain B protects the inner air curtain A and reduces the outflow of cool air.

In this embodiment, as shown in FIG. 3, the inner layer cool air outlet 13a and the outer layer cool air outlet 15a are surrounded by three outlet members 31a to 31c.
Rectifiers 25 and 27 are supported by a to 31c.

Each of the outlet members 31a to 31c is formed of a light-transmitting material (eg, resin), and extends in the width direction of the showcase 1 (from the near side to the far side in the drawing), and its cross section is substantially the same. It is triangular.

As shown in FIG. 4, the outlet members 31a to 31c include a main body 35 having a light transmitting property and a main body 3 having a light transmitting property.
5 and a cap portion 37 for sealing the openings at both ends.

A fluorescent lamp housing 32 is formed inside the main body 35, and a fluorescent lamp (illuminator) having a diameter of 16 mm is formed in the fluorescent lamp housing 32.
The fluorescent lamps 33 are accommodated therein, and both ends of the fluorescent lamps 33 are supported by cap portions 37 which also serve as sockets of the fluorescent lamps 33. The fluorescent lamp 33 having a diameter of 16 mm is a fluorescent lamp developed in recent years.

In the showcase 1, the rectifiers 25, 2
Through 7, cool air in different temperature zones is blown out. That is, the temperature of the cool air blown out through the rectifier 25 for the inner layer is set lower than the temperature of the cool air blown out through the rectifier 27 for the outer layer on the outside. Therefore, referring to FIG. 3, the most dew condensation occurs on the surface of rectifier 25 side of central outlet member 31b. In addition, dew condensation occurs on the side surfaces of the other outlet members 31a to 31c with a slight difference.

In this embodiment, the outlet members 31a to 31
The fluorescent lamp 33 made of a recently developed thin tube is inserted in the fluorescent lamp housing 32 of FIG. 3C in place of the conventional dew condensation preventing heater.
The temperature drop of 1a to 31c is prevented, and the occurrence of dew is prevented.

Therefore, it is not necessary to provide a dew condensation prevention heater, so that the power consumption of the low-temperature showcase 1 can be reduced, and the number of components and the number of assembly steps are reduced, so that the manufacturing cost of the low-temperature showcase 1 can be reduced.

Since the fluorescent lamp 33 is as thin as the dew condensation preventing heater, it is not necessary to increase the size of the outlet members 31a to 31c.

Since the fluorescent lamp accommodating portions 32 of the outlet members 31a to 31c are sealed by the cap portion 37, no cold air enters the inside, and the fluorescent lamps 33 are heated by the heat of the fluorescent lamps 33.
Is kept warm, so that a decrease in illuminance is prevented.

Since the outlet members 31b and 31c in which the fluorescent lamps 33b and 33c are housed are outside the air curtain A, the ambient temperature is relatively high, and the fluorescent lamps 33b and 33c are not used.
The illuminance of 3c does not decrease, and the illuminance of the upper part 5a in the refrigerator is maintained.

In a low-temperature showcase in which the air curtain is composed of one layer, at least a blow-out port member containing a fluorescent lamp may be provided on the front side of the rectifier.

The support member 31a and the rectifiers 25 and 27 may be formed integrally. If they are formed integrally, the cost can be reduced and the number of manufacturing steps can be reduced.

As another embodiment, as shown in FIG.
On the inner surface of the front surface C of the outlet members 31a to 31c, for example, a plurality of triangular cross-section convex bodies (light dispersion parts) 39 extending in the longitudinal direction may be formed. According to this, since the light is dispersed by the convex body 39 having a triangular cross-section, an effect is obtained that the fluorescent lamp 33 does not become dazzling when viewed from the front side of the showcase 1 when the fluorescent lamp 33 is turned on.

Further, as another embodiment, as shown in FIG. 4, a light reflecting plate 41 such as an aluminum plate is mounted on the entire inner surface of the main body 35 above the fluorescent lamp 33 as shown in FIG. It is desirable. Specifically, the main body 3
The light reflection plate 41 is attached so as to straddle the upper part of the front surface C of the light source 5.

According to this, since the light of the fluorescent lamp 33 is reflected by the light reflecting plate 41 and guided to the inside of the refrigerator 5, the upper part 5a of the refrigerator is efficiently illuminated.

The cap 37 serves as a cover for closing both ends of the main body 35 and also serves as a socket for the fluorescent lamp 33, thereby reducing costs and reducing the number of assembly steps. Reference numeral 43 denotes a lead wire electrically connected to the fluorescent lamp 33. As described above, the present invention has been described based on one embodiment, but the present invention is not limited to this. In the present embodiment, the cross section of the outlet member is triangular, but may be rectangular, for example. The outlet member does not need to surround the periphery of the fluorescent lamp. For example, the outlet member may have a substantially V-shaped cross section, and may be installed in the showcase body so that the upper surface that opens is closed by a partition plate or a heat insulating wall. .

Further, in the present embodiment, three outlet members accommodating the fluorescent lamp are provided, but at least the outlet between the outer cool air outlet and the inner cool air outlet (the portion where dew condensation is most likely to occur). What is necessary is just to store a fluorescent lamp in a member.

In this embodiment, the illuminator is 16 m
Although an m-tube fluorescent lamp is used, the present invention is not limited to this, and a thick fluorescent lamp with current specifications can be used if it can be designed structurally.

[0042]

According to the first aspect of the present invention, the outlet member forming the cool air outlet is formed of a light transmitting material, and an illuminator is provided inside the outlet member formed of the light transmitting material. Since it is stored, the temperature of the outlet member rises due to radiant heat of the illuminator stored in the storage portion and heat generated by the illuminator, and dew condensation at the outlet member can be prevented. Therefore,
For example, since there is no need to provide a dew condensation prevention heater,
The power consumption of the low-temperature showcase can be reduced, and the number of parts and the number of assembly steps are reduced, so that the manufacturing cost can be reduced.

According to the second aspect of the present invention, openings are provided at both ends of the outlet member, and these openings are closed by the sockets of the illuminator. It plays the role of a lid for preventing the occurrence of the problem, and eliminates the need to provide a lid. Therefore, the number of parts can be reduced, and the cost can be reduced.

According to the third aspect of the present invention, since the light dispersion portion for dispersing the light path of the illuminator is provided on the front side of the outlet member, the illuminator heading toward the front surface of the outlet member by the light dispersion portion. Light path is dispersed, and it is not dazzling even if the illuminator of the outlet member is viewed from the front side of the showcase body.

According to the fourth aspect of the present invention, since the light reflecting plate is provided on the upper portion of the outlet member, the light of the illuminator is guided downward, that is, in the refrigerator, and the interior of the refrigerator can be efficiently illuminated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a low-temperature showcase according to the present embodiment.

FIG. 2 is a sectional view showing an internal structure of the low-temperature showcase of FIG.

FIG. 3 is a sectional view showing a structure of a cool air outlet of the low-temperature showcase of FIG. 2;

FIG. 4 is a perspective view showing a support member accommodating the illuminator.

FIG. 5 is a cross-sectional view showing a structure of an upper part of a conventional low-temperature showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low-temperature showcase 5 Interior 13a, 15a Cold air outlet 31 Outlet member 32 Storage part 33a-33c Fluorescent lamp (illuminator) 37 Cap part 39 Light dispersion part 41 Light reflection plate

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) F25D 27/00 F25D 27/00 (72) Inventor Tetsuya Okeya 2-5-5 Keihanhondori, Moriguchi-shi, Osaka No. SANYO Electric Co., Ltd. F term (reference) 3B110 AA12 BA05 BA07 3K014 AA02 LA04 PA01 RB05 3L045 AA05 BA01 CA02 DA02 EA01 GA07 HA01 KA02 PA04

Claims (4)

[Claims] 1. A low-temperature showcase provided with an illuminator for illuminating the inside of a refrigerator near a cool air outlet of a showcase main body, wherein an outlet member forming the cool air outlet is formed of a light transmissive material. A low-temperature showcase, wherein the illuminator is housed inside an outlet member made of a light transmissive material. 2. An opening is provided at both ends of the outlet member,
The low-temperature showcase according to claim 1, wherein the openings are closed by sockets of the illuminator. 3. The low-temperature showcase according to claim 1, further comprising a light dispersion portion for dispersing a light path of the illuminator on a front surface of the outlet member. 4. The low-temperature showcase according to claim 1, wherein a light reflecting plate is provided above the outlet member.