KR20170133572A - Pair glass for a refrigerator door having a transparent display - Google Patents

Abstract

The present invention provides double glass for a refrigerator door having a transparent display. According to an embodiment of the present invention, the double glass for a refrigerator door comprises: front glass and rear glass stacked to face each other at regular intervals; an outer spacer and LED housing for forming a sealed space between the front glass and the rear glass by being alternately arranged along an edge between the front glass and the rear glass; a transparent display panel stacked in the space; and an LED module mounted to the LED housing to irradiate the inside of the space with light. According to the present invention, a light guide plate and an LED light source are installed in the double glass for a refrigerator door having a transparent display such that a clear video can be realized when a screen of the display panel is driven, and if the screen of the display panel is not driven, the display panel is realized to be transparent such that articles stored in a refrigerator body can be clearly seen.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a double glass for a refrigerator door having a transparent display,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double glass for a refrigerator door having a transparent display, and more particularly, to a double glass for a refrigerator door having a transparent display for displaying an image in the background of a refrigerator interior.

2. Description of the Related Art [0002] In general, a door is installed on a front surface of a refrigerator so as to enclose a space inside a refrigerator to prevent leakage of cold air from the inside of the refrigerator to the outside, and to retrieve articles stored in a space inside the refrigerator, if necessary.

In recent years, a transparent window made of glass has been formed on the refrigerator door so that the article stored in the inside of the refrigerator can be checked from the outside. Such transparent windows are used more particularly in commercial refrigerators.

When such a transparent window is used in a commercial refrigerator, the seller can easily check the display and alignment state of the articles stored in the refrigerator interior, arrange them if necessary, obtain the exhibition effect of the articles, and the buyer can open the refrigerator door The article stored in the refrigerator can be easily recognized without opening the refrigerator door so that the opening time of the refrigerator door can be reduced.

Further, a technology of forming such a transparent window in a multilayer glass structure and mounting a transparent display inside the multilayer glass to display an image in the background of a space inside the refrigerator is used. Through the images displayed on the transparent display, the advertisement effect can be obtained, the esthetics of the refrigerator and / or the stored article can be improved, and the purchasing desire of the purchaser can be inspired.

In this connection, Japanese Patent Application Laid-Open No. 10-1197705 discloses a multilayer glass structure in which a liquid crystal cell capable of implementing an LCD image is mounted on a refrigerator transparent window. The two-layered glass structure of this prior art document is composed of a transparent glass substrate which is formed of a transparent glass material having a planar front and back surface and a transparent glass substrate which is placed on one side of the transparent glass substrate with a space therebetween and on which a metal or metal oxide is thinly coated, A second low emission glass substrate positioned on one side of the first low emission glass substrate with an interval therebetween and thinly coated with a metal or a metal oxide on one surface thereof and a second low emission glass substrate having a transparent glass substrate and a first low emission glass substrate, And a spacer provided so as to be in contact with the edges of the surfaces corresponding to each other between the low emission glass substrates, wherein a space is formed between the spacer and the first low emission glass substrate so as to output an image And an image display unit.

The image display unit of this prior art document transmits light from an external indirect light source to a display panel without using a light guide plate and an internal light source to display an image. Thus, the double-layered glass structure of this prior art document has a problem in that it is difficult to realize a clear image due to a decrease in light incident on the display panel.

In addition, Japanese Patent Application Laid-Open No. 10-1161114 discloses a door lighting structure for a refrigerator for a showcase capable of implementing an LCD image. This door illumination structure of this prior art document has a multilayered glass means in which a plurality of transparent glass substrates are disposed as layers and a display substrate is provided so as to output an image in a space between the glass substrates, A door frame having one end fixed to the main body of the refrigerator and connected to one side of the main body so as to be opened on the main body of the refrigerator, And an LED illumination unit configured to irradiate light toward the LED illumination unit.

The LED illumination part of this prior art document is installed in a door frame, which is formed outside the double-layer glass means. Therefore, the door lighting structure of this prior art document also has a problem that it is difficult to realize a clear image due to a decrease in light incident on the display panel.

In addition, Japanese Laid-Open Patent Publication No. 10-2014-0062920 discloses a refrigerator including a transparent display panel forming a door and including at least one lighting module at the rear of the door.

The lighting module of this prior art document is installed in the refrigerator body which is the outside of the door. Therefore, there is a problem that it is difficult to realize a clear image due to a decrease in light incident on the transparent display panel even in the refrigerator of this prior art document.

KR 10-1197705 B1 KR 10-1161114 B1 KR 10-2014-0062920 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a double glazing for a refrigerator door having a transparent display, in which light incident on a transparent display panel is not deteriorated, thereby realizing a clear image.

According to an aspect of the present invention, there is provided a dual glass door for a refrigerator door, comprising: a front glass and a rear glass stacked on top of each other with a predetermined space therebetween; And a light emitting diode (LED) module mounted on the LED housing and irradiating light into the space, wherein the LED housing includes a light emitting diode (LED) module.

Preferably, the rim has a rectangular shape, the outer spacer forms a pair of opposing sides of the rectangular shape, and the LED housing forms a pair of opposing opposite sides of the rectangular shape.

Preferably, the LED housing conducts heat of the LED module to dissipate heat.

Preferably, the double glass for the refrigerator door further includes a transparent light guide plate laminated in the space and uniformly transmitting the light incident from the LED module to the display panel.

Preferably, the double glazing for a refrigerator door further comprises a bar including a light guide plate departure prevention portion and a light guide plate mounting portion, and an inner spacer for bringing the light guide plate into close contact with the light guide plate mounting portion from the rear of the light guide plate mounting portion Wherein the light guide plate deviation preventing portion is located between the outer spacer and the light guide plate, and the light guide plate mount portion extends from the light guide plate deviation preventing portion toward the inside of the space to mount the light guide plate in front of the light guide plate.

Preferably, the LED housing includes a light guide plate portion extending toward the inside of the space to mount the light guide plate in front of the light guide plate, and the inner spacer is disposed at a rear side of the light guide plate mount portion of the LED housing, And is brought into close contact with the light guide plate mounting portion of the LED housing.

According to the present invention, since the light guide plate and the LED light source are installed inside the double glass for the refrigerator door having the transparent display, when the screen of the display panel is driven, a clear moving picture can be realized. So that the article stored inside the refrigerator body can be clearly seen.

Further, since the fixing of the light guide plate is made by bar assembly, the assembling is simple and the workability is improved, the reassembly is easy, the defect rate is reduced, the appearance inspection is easy, and the assembly productivity is improved.

1 is a perspective view of a double glass for a refrigerator door according to an embodiment of the present invention.
Fig. 2 is an exploded view of the double glass for a refrigerator door of Fig. 1;
3 is a cross-sectional view of the region AA 'in FIG.
4 is a cross-sectional view of the region BB 'of FIG.
5 is an enlarged view of the area C in Fig.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be illustrative of the present invention and not to limit the scope of the invention. Should be interpreted to include modifications or variations that do not depart from the spirit of the invention.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, they are generally used in general terms. However, the present invention is not limited to the intention of the person skilled in the art to which the present invention belongs . However, if a specific term is defined as an arbitrary meaning, the meaning of the term will be described separately. Accordingly, the terms used herein should be interpreted based on the actual meaning of the term rather than on the name of the term, and on the content throughout the description.

The drawings attached hereto are intended to illustrate the present invention easily, and the shapes shown in the drawings may be exaggerated and displayed as necessary in order to facilitate understanding of the present invention, and thus the present invention is not limited to the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of known configurations or functions related to the present invention will be omitted when it is determined that the gist of the present invention may be obscured.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a double glass for a refrigerator door according to an embodiment of the present invention. Referring to FIG. 1, the double glass 100 for a refrigerator door has a rectangular shape that can be used for a general refrigerator door. However, the double glazing 100 for a refrigerator door may be manufactured in a shape other than a square as necessary.

The double glazing 100 for a refrigerator door is provided with other components (not shown) that can be used as a refrigerator door. For example, means for attaching to the main body of the refrigerator so as to be openable and closable, an external frame, and the like are added.

For convenience of description, the X-axis direction in FIG. 1 is referred to as a left-right direction, the Y-axis direction is referred to as a vertical direction, and the Z-axis direction is referred to as a forward-backward direction.

FIG. 2 is an exploded view of the double glass 100 for the refrigerator door of FIG. 1, FIG. 3 is a sectional view of the area A-A 'of FIG. 1, and FIG. 4 is a sectional view of the area B-B' of FIG. 2 to 3, a double glass 100 for a refrigerator door includes a front glass 102, a rear glass 104, an external spacer 110, an LED housing 120, an LED module 130, A heat dissipation pad 142, a display panel 150, a light guide plate 160, a bar 170, and an inner spacer 180.

The LED module 130, the butyl material 140, the heat radiating pad 142, the display panel 150, the light guide plate 160, the bar 170 (see FIG. 1), the external spacer 110, the LED housing 120, And the like constitute the front plate of the double glass 100 for the refrigerator door and the rear glass 104 and the internal spacer 180 constitute the thick plate of the double glass 100 for the refrigerator door. The front plate and the rear plate are assembled and assembled together to form a double glass 100 for a refrigerator door. At this time, another butyl material 140 is interposed between the front plate and the back plate.

The front glass 102 and the rear glass 104 are stacked facing each other at regular intervals.

The front glass 102 is transparent and protects the front surface of the double glass 100 for a refrigerator door. Therefore, as the front glass 102, transparent glass having a strength capable of protecting the front surface of the double glass 100 for a refrigerator door is used.

The rear glass 104 performs internal and external heat insulation functions. As the rear glass 104, a low emissivity glass may be used. Royi glass is an energy-saving glass that is coated with a thin layer of metal or metal oxide on the surface of glass and minimizes heat transfer. It is also called low-emission glass.

The outer spacers 110 and the LED housings 120 are alternately arranged along the rim between the front glass 102 and the rear glass 104 to form a closed space between the front glass 102 and the rear glass 104 .

The rim between the front glass 102 and the rear glass 104 has a rectangular shape. The outer spacers 110 make up a pair of opposing sides of the square shape, and the LED housing 120 forms the other pair of opposing sides of the square shape.

Specifically, the external spacer 110 includes a first external spacer forming a left side of a rectangular shape and a second external spacer forming a right side. The LED housing 120 includes a first LED housing and a second LED housing, And a second LED housing.

The outer spacers 110 and the LED housing 120 are assembled together to form a quadrangular outer rim of the double glass and function as a double pane of glass.

5 is an enlarged view of the area C in Fig. Referring to FIG. 5, the LED housing 120 is assembled with an external spacer 110 through a corner key 115. One end of the LED housing 120 is coupled to one end of the 'A' shaped corner key 115 and one end of the external spacer 110 is coupled to the other end of the corner key 115, 110 and the LED housing 120 are assembled.

The external spacers 110 and the LED housing 120 may be assembled through various fastening members other than the corner key 115. [ For example, the outer spacers 110 and the LED housing 120 may be assembled through a fastening member of a bellows type. Also, the external spacers 110 and the LED housing 120 may be connected in a bent manner.

2 to 4, the moisture absorber 112 is stored in the inner space of the outer spacer 110. The moisture absorbent 112 removes moisture inside the double glass.

The LED module 130 is mounted to the LED housing 120 along the longitudinal direction of the LED housing 120. The LEDs 132 are arranged at regular intervals along the longitudinal direction of the LED module 130. [ The LED module 130 includes a flexible flat cable (FFC) 134 electrically connected to receive driving power.

The LEDs 132 illuminate the light into an enclosed space formed between the front glass 102 and the rear glass 104. To this end, the LEDs 132 are disposed inside a sealed space formed between the front glass 102 and the rear glass 104. The light emitted from the LEDs 132 directly enters the light guide plate 160 inside the closed space and the LEDs 132 function as a main light source of the display panel 150. [

 The LED housing 120 functions as a heat sink of the LEDs 132 by conducting heat generated from the LEDs 132 and radiating heat to the outside. As described above, the external spacers 110 and the LED housing 120 function as a double-glass bass while forming the outer rim of the double glass. The LED housing 120 performs heat dissipation in addition to such a bass function. The LED housing 120 is made of a material having excellent thermal conductivity to perform a heat radiation function.

The heat dissipation pad 142 is mounted such that its front surface contacts the front glass 102 and its rear surface contacts the LED housing 130 to assist the heat dissipation function of the LED housing 130.

The butyl material 140 has the shape of a quadrangular frame having the same outer frame as the outer spacer 110 and the LED housing 120, the width in the horizontal direction and the width in the vertical direction, and the thickness in the longitudinal direction.

The butyl material 140 is attached and fixed between the outer frame made up of the outer spacer 110 and the LED housing 120 and the front glass 102. The butyl material 140 is also attached between the outer frame made of the outer spacer 110 and the LED housing 120 and the rear glass 104 when the front plate and the back plate of the refrigerator door double glass 100 are assembled and assembled together. And is fixed. These butyl materials 140 allow the interior of the closed space formed between the front glass 102 and the rear glass 104 to be held in a vacuum.

The display panel 150 is laminated and transparent in an airtight space formed between the front glass 102 and the rear glass 104. As the display panel 150, a transparent LCD panel may be used. The display panel 150 includes a flexible flat cable (FFC) 152 electrically connected to receive driving power.

The display panel 150 is bonded to the rear surface of the front glass 102 through a resin. The thickness of the resin filled between the front glass 102 and the display panel 150 for bonding the front glass 102 and the display panel 150 is 1 mm or less, The panel 150 can realize a screen having a high transmittance.

When the double glass 100 for a refrigerator door is used in a commercial refrigerator, the seller drives the display panel 150 to display an advertisement image or a moving image on the screen, thereby achieving an advertisement effect and obtaining an aesthetics of the refrigerator and / And can encourage buyers to purchase.

The light guide plate 160 is disposed between the display panel 150 and the rear glass 104 and is transparent in an airtight space formed between the front glass 102 and the rear glass 104. [ The light guide plate 160 scatters light emitted from the LEDs 132 disposed on the LED module 130 and uniformly transmits the light to the display panel 150.

The light guide plate 160 is coated with an oil / inorganic scattering agent on the front, rear, or front and rear surfaces. Due to the applied scattering agent, the refractive index of the entire light guide plate 160 is higher than the refractive index of the light guide plate medium excluding the scattering agent (for example, 1.49). Further, the light guide plate 160 has a haze of 5% or less and a transmittance of 90% or more.

When the light from the LEDs 132 is incident into the light guide plate 160 through the light entering portion on the side surface of the light guide plate 160, the light is scattered by the light guide plate and uniformly emitted through the rear portion of the light guide plate 160, A bright image of high brightness can be realized on the panel 150. [

In addition, when light from the LEDs 132 is not incident into the light guide plate 160 because the light guide plate 160 is transparent, an object stored in the inside of the refrigerator can be visually recognized from the outside of the refrigerator.

The bar 170 is provided on the left and right sides where the external spacers 110 are located in the closed space between the front glass 102 and the rear glass 104 to define the distance between the light guide plate 160 and the display panel 150 And the light guide plate 160 is fixed.

The bar 170 is fixed to the windshield 102 via the double-faced tape 192. Additionally, the bar 170 can be secured to the inner surface of the outer spacer 110 via the double-sided tape 192, in which case the bar 170 can be more firmly fixed.

The bar 170 includes a light guide plate separation preventing portion 172 and a light guide plate mounting portion 174. The light guide plate anti-scattering portion 172 is positioned between the outer spacer 110 and the light guide plate 160 and the light guide plate mount portion 174 is located between the front glass 102 and the rear glass 104 And is sandwiched between the light guide plate 160 and the front glass 102.

The left and right ends of the light guide plate 160 are mounted on the front side of the light guide plate 160 and the light guide plate separation preventing portion 172 is disposed on the light guide plate mounting portion 174 of the light guide plate 160 is prevented from being deviated in the left-right direction.

The inner spacer 180 has a shape of a quadrangular frame with a width in the left-right direction, a width in the up-down direction, and a thickness in the back-and-forth direction smaller than the outer frame made up of the outer spacer 110 and the LED housing 120.

The inner spacer 180 is sandwiched between the rear glass 104 and the light guide plate 160 at the rear of the light guide plate mounting portion 174 to closely contact the light guide plate 160 with the light guide plate mounting portion 174. The inner spacer 180 pushes the light guide plate 160 forward from the rear of the light guide plate mounting portion 174 so that the light guide plate 160 is tightly fixed to the light guide plate mounting portion 174. The inner spacer 180 is adhered and fixed to the rear glass 104 through the double-faced tape 192.

A pad 194 is adhered and fixed between the light guide plate 150 and the light guide plate mounting portion 174 and between the light guide plate 150 and the inner spacer 180. One surface of the pad 194 contacts the light guide plate 160 and the other surface contacts the light guide plate mounting portion 174 or the inner spacer 180 at the same time.

The pad 194 is made of a soft material to prevent the double glass 100 for a refrigerator door from bending due to external impact or thermal expansion of the light guide plate 160. For example, the pad 194 is made of acrylic, silicone, or polyurethane.

The LED housing 120 includes a main body portion 122 and a light guide plate mount portion 124. The LED module 130 is mounted on the inner side surface of the main body portion 122 and the light guide plate mount portion 124 is disposed in the sealed space between the front glass 102 and the rear glass 104 from the main body portion 122 And is sandwiched between the light guide plate 160 and the front glass 102.

The upper and lower ends of the light guide plate 160 are positioned on the front side of the light guide plate 160 so that the light guide plate 160 is positioned on the light guide plate mounts 174 And is also mounted on the light guide plate mounting portion 124 of the LED housing.

The inner spacer 180 is sandwiched between the rear glass 104 and the light guide plate 160 at the rear of the light guide plate mounting portion 124 of the LED housing to adhere the light guide plate 160 to the light guide plate mounting portion 124 of the LED housing. The inner spacer 180 pushes the light guide plate 160 forward from the rear of the light guide plate mounting portion 124 of the LED housing so that the light guide plate 160 is tightly fixed to the light guide plate mounting portion 124 of the LED housing. As described above, the inner spacer 180 is adhered and fixed to the rear glass 104 through the double-faced tape 192.

The pad 194 is adhered and fixed between the light guide plate 150 and the light guide plate mounting portion 174 of the bar also between the light guide plate 150 and the light guide plate mounting portion 124 of the LED housing. One surface of the pad 194 is in contact with the light guide plate 150 and the other surface is in contact with the light guide plate mounting portion 124 of the LED housing.

The inner spacer 180 also enables the FFC 134 of the LED module or the FFC 152 of the display panel to be disposed along the front-rear direction of the double glass 100 for the refrigerator door. When the width of the double glazing 100 for a refrigerator door is smaller than the width of the FFCs 134 and 152, the FFCs 134 and 152 are connected to the refrigerant door double- There arises a restriction that it can not be arranged along the front-rear direction of the glass 100. Fig. This limitation is overcome by adjusting the front-rear width of the inner spacer 180 so that the width of the double glazing 100 for a refrigerator door is equal to or greater than the width of the FFCs 134 and 152. [

The double glass 100 for a refrigerator door to which the front plate and the thick plate are attached is filled with a sealant 196 between the rims and sealed. The sealant 196 absorbs expansion, vibration, and deformation between the front plate and the back plate in addition to the function of air tightness and water tightness.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention described above can be implemented separately or in combination.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Double glass for refrigerator door 102: Front glass
104: rear glass 110: external spacer
112: Moisture absorber 115: Corner key
120: LED housing 122:
124: Light guiding plate mounting part 130: LED module
132: LED 134: FFC
140: butyl material 142: heat-radiating pad
150: Display panel 152: FFC
160: light guide plate 170: bar
172: light guide plate departure prevention portion 174: light guide plate mounting portion
180: inner spacer 192: double-sided tape
194: Pad 196: Sealant

Claims (6)

Front glass and rear glass stacked facing each other at regular intervals;
An external spacer disposed alternately along the rim between the front glass and the rear glass to form a sealed space between the front glass and the rear glass;
A transparent display panel laminated in the space; And
And a LED module mounted on the LED housing and radiating light into the space.
The method according to claim 1,
The rim has a rectangular shape,
Wherein the outer spacer forms a pair of opposing sides of the rectangular shape and the LED housing forms a pair of opposing opposite sides of the rectangular shape.
2. The double glass for a refrigerator door as claimed in claim 1, wherein the LED housing conducts heat of the LED module to dissipate heat.
The double glass for a refrigerator door according to claim 1, further comprising a transparent light guide plate laminated in the space and uniformly transmitting light incident from the LED module to the display panel.
5. The method of claim 4,
Wherein the light guide plate separation preventing portion is positioned between the external spacer and the light guide plate, and the light guide plate mounting portion extends from the light guide plate departure prevention portion toward the inside of the space Wherein the light guide plate is placed in front of the light guide plate; And
Further comprising: an inner spacer that closely contacts the light guide plate with respect to the light guide plate mounting portion at a rear portion of the light guide plate mounting portion.
5. The method of claim 4,
Wherein the LED housing includes a light guide plate mounting portion extending toward the inside of the space to mount the light guide plate in front of the light guide plate,
Wherein the inner spacer closely adheres the light guide plate to the light guide plate mounting portion of the LED housing at a rear side of the light guide plate mounting portion of the LED housing.

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