JP3422939B2 - Cover for frozen or refrigerated open showcase - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for closing an opening of a showcase having a freezing or refrigeration function at night or on holidays. is there. 2. Description of the Related Art An open showcase has a freezing and refrigeration function, but is a product display case of a type in which a door is not provided at an opening for convenience such as taking in and out of a product. In order to block cold air from outside air at room temperature, a portion corresponding to a door is partitioned by an air curtain. [0003] However, when the store is closed, products are not taken in and out, so that the refrigerator is not operated, and a cover (also called a night cover) formed so as to be rolled up and drawn out freely is opened in the case. In such a case, the cover is pulled out and the inside and the outside of the refrigerator are shut off. [0004] However, the conventional night cover is designed for heat insulation between the inside and the outside of the showcase, and for example, a relatively thick vinyl sheet is used as the cover body. However, it is known that the cover sheet of this kind causes dew condensation on the outer cover surface due to the temperature difference between the inside and the outside air. Conventionally, in order to prevent the attachment of water droplets due to the formation of dew, it has been proposed to form small holes on the entire surface of the vinyl sheet for the purpose of preventing dew condensation.
No. 586, No. 58-51583, No. 2-6488
No. 3 has been proposed. However, actually, even in the case of a night cover having a large number of small holes formed on the entire surface of the vinyl sheet for preventing dew condensation, dew condensation is present on the outer surface of the night cover. At present, contractors are busy dealing with the generated dew condensation, and are struggling to prevent the dew condensation from occurring. SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problem of dew condensation on a night cover in an open showcase having a freezing and refrigeration function, and has been disclosed in the related art. It is an object to provide a cover for a computer. Means for Solving the Problems The cover of the present invention, which has been made to solve the above problems, has a flat stand type open show provided with a freezing function or a refrigeration function and having an open top surface. in openably mounted a cover to close the opening in the opening of the case, a sheet of textile material at relatively thin cover body with the entire surface moisture permeability, or, together form a knitted fabric, the The cover main body is removably attached to a mounting base provided inside the upper side of the opening of the case, and a locking claw locked by a cover locking member provided on an upper wall surface on the front side of the case is separately provided. The cover is provided on the support bar at the leading end of the drawer of the cover body together with the annular handle of the body. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an example of a freezing type open showcase to which the cover of the present invention is attached, and FIG. 2 is a perspective view showing a main part of the use state of the cover of the present invention attached to the showcase of FIG. The inventors of the present invention have proposed a conventional night cover for an open showcase having freezing and refrigeration functions.
As a result of studying why the dew was formed even when the small holes for ventilation were provided on the entire surface, and as a result of repeated studies, it was found that the cause of the dew was in the cover body. That is, regardless of whether or not the countless small holes are provided on the entire surface of the vinyl sheet material, the material itself is an uninterrupted homogenous material in terms of thermal conductivity. Even if the temperature is low, the low-temperature heat inside the cabinet is conducted from the inner surface of the sheet material to the outer surface, lowering the temperature of the outer surface of the cover, and the outer surface of the cover whose outer surface temperature has fallen is in contact with ambient air at room temperature (room temperature) They found that water vapor in the outside air condensed on the outer surface of the cover to form water droplets. Therefore, according to the present invention, as a result of repeated studies and studies on a cover sheet material in which the cool air in the open showcase is hardly transmitted to the outer surface of the cover, the sheet material used for the cover is considered to be thermally conductive. The inventors of the present invention have found that a material having a discontinuity that cuts off its conduction or significantly inhibits heat conduction is suitable, and has completed the present invention. Actually, a cover for an open showcase having a cover body made of a woven fabric selected as a material having discontinuity from the viewpoint of heat conduction was prepared and used in an embodiment illustrated in FIGS. However, it was confirmed that no dew condensation occurred. Hereinafter, this point will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a flat stand type open showcase provided with a freezing or refrigeration function, and the entire upper surface of the case 1 is entirely opened as a product entrance 2 because of the flat stand type. Reference numeral 3 denotes an example of the cover of the present invention mounted on one side of the opening 2 of the case 1 and has the following configuration. That is, the cover 3 of the present invention comprises a rolled-up cover body 3a, a mounting base 4 having left and right support brackets 4a and 4b for holding the left and right ends thereof from the outside, and a front end of the cover body 3a. A bar-shaped support bar 3b attached over the entire width thereof, and an annular pull bar provided at a central portion of the bar 3b.
A locking claw member 3d which is pulled out from the mounting base 4 to the near side 2a of the opening 2 and is locked by a cover locking member 5 provided on an upper portion of the front wall 1a of the case 1; Is formed. The cover body 3a has a built-in self-winding function using a spring similar to a known roll curtain. The method of use and the form of use of the cover of the present invention are the same as those of the prior art. That is, at the time of business, the cover 3 of the present invention winds the cover body 3a into the state shown in FIG. 1, and pulls the handle 3c from the state shown in FIG. The case 1
By pulling it out toward the front wall 1a and hooking the locking claw 3d on the locking member 5, the state shown in FIG. 2 is reached, and the opening 2 of the case 1 is completely closed. At this time, the cover of the present invention is
However, since it is made of woven cloth, even if the inner surface is in contact with the cold air in the refrigerator, it is difficult to conduct to the outer surface, and there is some heat conduction, so the outer surface temperature of the cover body 3a is lower than the outside air However, no dew condensation occurs on the outer surface of the cover body 3a. In the above example, the present invention is applied to a flat trapezoidal open showcase having an open upper surface, but the present invention is directed to an upright type or shelf type freezer / refrigerated open show having an open front surface. Of course, the case can also be applied. As described above, the present invention relates to a cover which is openably and closably attached to an opening of an open showcase provided with a freezing function or a refrigeration function so as to close the opening. single textile with a relatively thin cover body with the entire surface moisture permeability, or because a more formed knitted fabric, not easily transmitted to the outer surface of cooling air of the cover in the refrigerator, the cover body be provisionally conductive material As a result, water vapor is absorbed, so that a special effect that dew condensation, which has conventionally been a problem in taking measures, does not occur at all is obtained. As a result of using the cover of the present invention, no dew condensation occurs. As a result, unnecessary work such as wiping dew condensation and removing water droplets leaking into the storage and adhering to the product is eliminated with the conventional cover. Further, the cover of the present invention may be formed by replacing the material of the cover body with a predetermined material which does not cause dew condensation. Therefore, the cost can be reduced simply by replacing the existing vinyl sheet cover body with the cover body of the present invention cover. Here, the above effect can be obtained without excessively applying.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an example of a freezing type open showcase to which a cover of the present invention is attached. FIG. 2 is a perspective view showing a main part of a use state of the cover of the present invention attached to the showcase of FIG. 1; [Description of Signs] 1 Open showcase 2 Opening 3 Cover 3a Cover body 3b Support bar 3c Pull 3d Locking claw member 4 Mounting bases 4a, 4b Support bracket 5 Cover locking member

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yasuo Kojima 3-14 Kandanishikicho, Chiyoda-ku, Tokyo (No address) Kanda NS Building Zuiho Sangyo Co., Ltd. (56) References JP-A-9-79737 (JP, A) Japanese Utility Model Showa 56-109582 (JP, U) Japanese Utility Model Showa 57-1987 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47F 3/04 F25D 23 / 02

Claims (1)

(57) [Claims] [Claim 1] A free-standing type open showcase provided with a freezing function or a refrigeration function and having an entire upper surface opened so as to be openably and closably to close the opening. in has been covered, a sheet of textile material at relatively thin cover body with the entire surface moisture permeability, or, together form a knitted fabric, attached provided the cover body on the inside of the upper side of the opening in the casing While being attached to the base so as to be freely retractable and retractable, a locking claw, which is locked by a cover locking member provided on the upper wall surface on the front side of the case, is attached to a support bar at the leading end of the cover body together with a separate annular puller. A cover for an open showcase of a frozen or refrigerated type, wherein the cover is provided.