JPH0672739B2 - Case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a showcase having both refrigerating and warming zones.

(B) Conventional technology Recently, one showcase cools some of the products stored in a storage room such as a canned beverage and at the same time heats other products. There is. This combined storage increases during the winter when there is an increasing demand for heat retention of canned beverages. Showcases that employ this combined storage method are generally called hot and cold types.
As shown in Japanese Patent Publication No. 59-81475 (F25D11 / 02), the compartment is divided into upper and lower parts by a partition member having an elongated opening and an opening / closing member for opening and closing the opening so that the upper area is refrigerated and heated. When the upper and lower areas are used as a refrigerating area and the upper and lower areas are not used as a refrigerating area, the opening / closing member prevents cold air from entering from the lower area, which is a refrigerating area, while the heating element is an electric heater. Is energized and the upper area is heated to form a hot storage area. The temperature of this hot storage area is set in the range of 60 ° C to 70 ° C in consideration of the temperature at the time of drinking the canned beverage. In addition, an illumination room containing a light source consisting of an annular fluorescent lamp is formed right above the upper area, which is the heat storage area, with a light-transmitting plate made of heat-resistant resin as a boundary, and heat transfer from the heat storage area is formed. I try to prevent it with a transparent plate.

(C) Problems to be Solved by the Invention According to the above-mentioned conventional technique, the translucent plate that separates the illumination room from the upper area of the storage room is 60 when the upper area is the heating area.
Although it is heated to about ℃, it does not deform due to the heat effect of the heat storage area because it is made of heat-resistant resin, but the resin itself has a higher heat radiation (heat emissivity) rate than metal, so A large amount of heat is radiated from the light plate into the lighting room and the temperature of the lighting room rises, and the light source itself heats up due to radiant heat from the translucent plate in addition to self-heating, resulting in a large current flowing through the light source. As a result, the illuminance is reduced, the life is shortened, and when the light source is replaced, there are problems such as burns.

The present invention is intended to solve such problems, and it is an object of the present invention to suppress the temperature rise of a fluorescent lamp used as a light source in a refrigerating area by cold air in the refrigerating area.

(D) Means for Solving the Problems In order to solve the above problems, the present invention provides a refrigerating area that is cooled to a predetermined temperature with forced circulation cold air by a cooler (14) and a blower (21), and a heating unit. A heating area heated to a predetermined temperature by warm air from a container (68), a fluorescent lamp (48) provided in the heating area and illuminating the heating area, and a fluorescent lamp covering the fluorescent lamp. A cover (47) that forms a space (49) around the space, and a ventilation path (50) that is formed in the cover and guides a part of the cold air to the space (49). Provide a showcase (1) designed to cool 49).

(E) Action According to the embodiment, in the space (49) defined by the cover (47) that covers the fluorescent lamp (48) that illuminates the second storage room (29) that serves as a heat storage area, the refrigeration area is included. First storage room (17)
Since a part of the cool air for cooling the air enters from the ventilation path (50), the cool air is used to cool the fluorescent lamp (48) to suppress self-heating of the fluorescent lamp (68). ), The heated cover (47) is cooled to reduce the radiant heat from this cover to reduce the effect of the radiant heat on the fluorescent lamp (48). Abnormal temperature rise can be prevented, and along with this, a rated current flows through the fluorescent lamp (48) and a decrease in illuminance of the fluorescent lamp (48) can be prevented.

(F) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

3 to 5 (1) is a showcase according to the present invention, (2) is a lower wall (2A), an upper wall (2B), a back wall (2C) and left and right side walls (2D) ( 2E) and the heat-insulating box body that constitutes the main body of the showcase (1), (3), (4), and (5) are provided with handles (3a), (4a), and (5a),
A rotatable transparent door that opens and closes the right side, the lower left side, and the upper left side of the front opening (2a) that serves as a product storage and outlet for the heat insulating box (2), and (6) is the heat insulating box (2 ), A refrigerant compressor (7), a condenser (8), shown in FIG.
And a machine room in which a condenser blower (9) and the like are arranged. A drainage port (10) is formed at the rear portion of the lower wall (2A) of the heat insulating box (2), and a drainage pipe (11) is connected to this drainage port. Further, (12) is a shade that also serves as a sign attached to the front end of the upper wall (2B) of the heat insulating box (2), and an elongated fluorescent lamp (13) is provided in this shade.
Further, a strut (22) that bisects the opening into two left and right sections is erected at approximately the center of the opening (2a), and between the substantial center of the strut and the substantially center of the left edge of the opening (2a). A partition member (22A) that further divides the left section into two parts is provided between them.

Further, (15) is a back wall (2C) and an upper wall (2) of the heat insulation box (2).
A partition plate provided at a distance from B), and the partition plate provides a cooler (14) and a cool air passage (16) in which a blower for circulating cool air described later is arranged, and the transparent door (3) (4). ), A first storage room (17) is defined as a dedicated refrigerating area. A top plate (15A) is provided in the upper right half of the partition plate (15), and the top plate extends forward with a space from the lower surface of the upper wall (2B), and its front end opens (2a). ) Is located above the inner side of the upper edge of the right section to form the first cold air outlet (18) along the right half of the upper edge of the opening (2a). A cold air suction port (19) is formed between the lower end of the partition plate (15) and the lower wall (2A) over the entire width thereof.
A top plate is not provided on the upper left half of the partition plate (15). Further, a cold air blowout hole (20) is formed in the upper part of the partition plate (15). Reference numeral (21) is a blower for circulating cool air disposed in the upper part of the cool air passage (16), and this blower forcibly circulates cool air that has been heat-exchanged by the cooler (14) as shown by arrows in FIGS. 3 and 4. It is provided to the right of the center of the upper part of the partition plate (15).

The second storage (23) is disposed in the upper left part of the first storage chamber (17) in the heat insulation box (2), faces the transparent door (5), and serves as a refrigerating zone or a warming zone. This is a heat-insulating partition box that divides the room (29). This heat-insulating partition box is composed of upper and lower walls (24) (25), left and right side walls (26) (27) and back wall (28), and the front surface is transparent. The opening is opened and closed by the door (5). A lower surface plate (30) is provided below the lower wall (25) of the heat insulation partition box (23) from the substantially center of the left part of the partition plate (15) toward the partition member (22A). A lower passage (31) communicating with the cold air passage (16) is formed between the lower wall (25) of the heat insulating compartment (23). Further, the heat insulation partition box (23) is provided between the front end of the lower plate (30) and the partition member (22A).
A second cold air outlet (32) for blowing cold air from below is formed. Further, an upper passage (33) is formed between the upper wall (24) and the upper wall (2B) of the heat insulation box body (2), and further,
Between the back wall (28) and the partition plate (15), the lower passage (3
A back passage (34) communicating with 1) is formed, and an upper passage (33) which communicates with the cold air passage (16) and a cold air blowout hole (20) of a partition plate (15) to the back passage (34). ), The cold air in the cold air passage (16), which has become high pressure, is guided by the fan case (35).

Hereinafter, the heat insulation compartment box (23) will be described in detail with reference to FIGS. 1 and 2. The heat insulation compartment box (23) is composed of both inner and outer boxes (36) (37) and a foam heat insulating material (38) filled between the both boxes, the lower surface of which is the left side of the heat insulation box (2). The wall (2D), the partition plate (15), and the column (22) are supported by receiving members (39) provided respectively. An annular seal member (40) is provided on the entire circumference of the opening edge of the heat insulating compartment (23). The seal member (40) connects the front edges of the inner and outer boxes (36) (37) to each other and prevents the foam insulation of the foam heat insulating material (38) from leaking by foaming. And each of the rigid bases extends forward from both ends to form a heat insulating space (42) together with the base, the front surface of which is the front edge of the left side wall (2D) of the heat insulating box (2) and the column (22A).
And soft fin pieces (43) (43) in contact with the partition member (22B)
It consists of and. The fin pieces (43) (43) are not formed on the upper side of the seal member (40) in order to form a ventilation passage (44) in front of the seal member (40) in order to cool a fluorescent lamp described later. (45) is the upper wall (2) of the insulation compartment box (23)
In the hanging wall extending downward from the front end of 4), a heat insulating material (46) made of, for example, foamed polyethylene is provided directly below the upper side of the seal member (40) located in front of this hanging wall. Is a translucent cover (47) and an elongated fluorescent lamp (4) covered with this cover and illuminating the second storage chamber (23A).
8) is provided. The cover (47) has a hanging wall (4
It consists of a substantially L-shaped metal plate (47A) fixed to 5) and a translucent resin plate (47B) which is substantially L-shaped and detachably attached to this metal plate to form a shade. A heat insulating space (49) is formed around the fluorescent lamp (48) by a plate. Reference numeral (50) is an air passage formed at least in the vicinity of the end of the metal plate (47A), which communicates the upper passage (33) and the heat insulating space (49) with each other to cool the upper passage (33). Leads to adiabatic space (49). Since the cool air is guided to the heat insulating space (49) through the air passage (50) to cool the fluorescent lamp (48), the fin pieces (43) (43) are not provided on the upper side of the sealing member (40), and The length of the heat insulating material (46) is made shorter than the length of the cover (47) to form a cool air ventilation path (44). The heat insulating material (46) is provided to prevent dew condensation due to overcooling of the cover (47) due to cold air. The fluorescent lamp (48) is detachably supported by an elastic holder (51) fixed to the hanging wall (45). Reference numeral (52) is a cover plate that covers the right side surface of the heat insulation compartment box (23), and this cover plate allows the passage from both the lower and back passages (31) (34) to the first storage chamber (1).
Prevent cold air from leaking to 7). The cover plate (52) is formed with an operation port (53) for operating an operation bar described later.

(54) and (55) open a part of the upper wall (24) and the lower wall (25) of the heat insulation compartment box (23), and the frame members (54
A) (55A), which is a cold air inlet and a cold air outlet that establish a communication relationship between the second storage chamber (23A) and the upper and lower passages (33) (31). Are U-shaped first and second dampers (56) provided in the frame members (54A) and (55A) and slidable in the front-rear direction.
It is opened and closed by (57). Grooves (58) are formed in the left and right directions on the upper and lower surfaces of the first and second dampers (56, 57), respectively. Reference numeral (60) is an operation bar that connects the first and second dampers (56, 57) to each other. This operation bar (60) is made by bending a metal rod into a U
1) (62) and side (63), both upper and lower sides (6
1) The disk-shaped fitting member (64A) (64A)
B) is fixed. Then, these fitting members are fitted into the grooves (58) of the first and second dampers (56) (57), respectively. The tips of the upper and lower sides (61) (62) are rotatably supported by the upper wall (24) or the lower wall (25) by pins (59) serving as fulcrums. Further, the side (63) facing the right side wall (27) of the disconnection box (23) and also serving as a handle extends vertically along the outer surface of the right side wall (27) of the heat insulation compartment (23), The center is supported by a guide rail (65) fixed to the right side wall (27). The guide rail (65) is formed with a sliding groove (66) for moving the operation bar (60) in the front-rear direction. Then, the support shaft (67) at the substantially center of the side of the operation bar (60) is passed through the sliding groove (66). The second damper (57) is provided with a magnet (M), and the lower surface of the lower wall (25) corresponding to the magnet (M) has the magnet (M) when the second damper (57) is closed. There is provided a reed switch (S) that is turned on by its magnetic force in the vicinity and is energized to a heater (68) composed of an electric heater arranged in the second storage chamber (29).

The opening / closing operation of the first and second dampers (56) (57) will now be described. The operation bar (60) is moved forward through the operation port (53) of the cover plate (52) as shown by the solid line in FIG. When moving to, the first and second dampers (56, 57) also move forward,
Both the cold air inlet (54) and the cold air outlet (55) are opened, and the cold air in the upper passage (33) accompanying this opening is cooled by the cold air inlet (5
4), second storage room (29), cold air outlet (55), lower passage (3
The second storage room (29) becomes a refrigerating area. or,
On the contrary, when the operation bar (60) is moved rearward as shown by the dashed line in FIG. 6 in order to use the second storage room (29) as a storage area, the first and second dampers (56). (57) also moves rearward, the cold air inlet (54) and the cold air outlet (55) are both closed, and the supply of cold air from the upper passage (33) to the second storage chamber (29) is cut off. Then, at this time, the reed switch (S) is turned on to energize the heater (68), and the second storage chamber (29) is heated by the heater (68) in association with this energization to become a storage area.

(70) is a partition plate which is arranged in the second storage chamber (29) and is located directly below the heater (68), and (71) forcibly circulates air in the second storage chamber (29). A blower, (72) is a fan cover, and (73) is a pull-out shelf. The blower (71) has the propeller (74) facing the ventilation opening (76) of the fan cover (72), while the motor (75) is formed on the back wall (28) of the heat insulation compartment (23). It is housed in the recess (77) and is always operated regardless of the temperature of the second storage chamber (29), and air is forcedly circulated as indicated by the chain line arrow in FIG.
This circulation is similarly performed when the first and second dampers (56, 57) are open and the cold air inlet (54) and the cold air outlet (55) are open.

According to such a configuration, the second storage room (29) serving as a heating area
In the space (49) defined by the cover (47) that covers the fluorescent lamp (48) that illuminates the room, part of the air that cools the first storage chamber (17), which is the refrigeration area, is discharged from the ventilation path (50). In order to enter, in addition to cooling the fluorescent lamp (48) with this cold air to suppress self-heating of this fluorescent lamp, the cover (47) heated by the influence of the heater (68) is also removed. The effect of radiation heat on the fluorescent lamp (48) can be reduced by cooling and reducing the radiation heat from this cover.
An abnormal temperature rise of the fluorescent lamp (48) can be prevented, and accordingly, a rated current flows through the fluorescent lamp (48), and a decrease in illuminance of the fluorescent lamp (48) can be prevented.

(G) Effect of the Invention According to the present invention, in the space defined by the cover that covers the fluorescent lamps that illuminate the hot storage area, part of the cold air that cools the cold storage area enters from the ventilation path, This incoming cold air cools the fluorescent lamp to suppress self-heating of the fluorescent lamp, and at the same time cools the cover heated by the influence of the heater to reduce the radiant heat from this cover into the space. As a result, radiant heat that causes heating of the fluorescent lamp can be reduced, and as a result, abnormal temperature rise of the fluorescent lamp can be prevented. Therefore, it is possible to prevent the danger at the time of exchanging the fluorescent lamp and to extend the life.

[Brief description of drawings]

The drawings each show an embodiment of a showcase of the present invention.
The figure is a perspective view of a heat-insulating compartment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line BB in FIG. 5, and FIG.
C sectional view, FIG. 5 is an overall perspective view, FIG. 6 is a perspective view of the right side portion of the heat insulating compartment, and FIG. 7 is a vertical sectional view of the bottom wall of the heat insulating compartment. (14) …… Cooler, (17) …… First storage room to be a refrigerating area, (21) …… Blower, (29) …… Second room to be a heating area
Storage room, (47) …… Cover, (48) …… Fluorescent lamp, (49)
...... Space, (50) …… Ventilation path, (68) …… Heater.

Claims (1)

[Claims] 1. A refrigerating zone cooled to a predetermined temperature by forced circulation cold air by a cooler and a blower, a warming zone heated to a predetermined temperature by warm air by a heater, and provided in this warming zone. , With a fluorescent light to illuminate this hot storage area,
A showcase comprising a cover which covers the fluorescent lamp and forms a space around the fluorescent lamp, and a ventilation path which is formed in the cover and guides a part of the cool air into the space.