JP2007139318A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance design property of an interior light circumference of a refrigerator using LED light emitting elements for the interior light and visibility of preserved food inside the refrigerator. <P>SOLUTION: The refrigerator having the interior light which is a board 10 having LED light emitting elements 16 arranged thereon, is equipped with a lamp cover 11 formed of a transparent resin at the front of the board 10. By forming the cross section of the lamp cover 11 in an arc shape and forming the outer surface along the arc shape with a plurality of protrusion portions 22, LED light with high directivity can be continuously diffused and irradiated radially to the left and right along the arc shape, and the visibility of food inside the refrigerator can be efficiently improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator using an LED light emitting element for an interior lamp.

  2. Description of the Related Art Conventionally, there is a refrigerator that has a refrigerator interior light that is detachably attached to a top surface in a refrigerator compartment (see, for example, Patent Document 1).

  Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 8 is a schematic cross-sectional view of a conventional refrigerator, in which a refrigerator compartment 102 is disposed at the top of the refrigerator 101, a freezer compartment 103 is disposed at the bottom, and a cold air passage 104 is provided at the back of the refrigerator compartment 102. And an interior lamp 105 having a lamp socket is provided at the upper rear portion. Further, a door switch 106 is installed on the front side wall of the refrigerator compartment 102, and the opening / closing of the refrigerator compartment door 107 is detected to control the turning on / off of the interior lamp 105. The refrigerator compartment 102 includes a plurality of food shelves 108.

With the above configuration, when the refrigerator compartment door 107 is opened, the door switch 106 is short-circuited and the interior lamp 105 is turned on. When the refrigerator compartment door 107 is closed, the door switch 106 is opened and the interior lamp 105 is turned off.
Japanese Utility Model Publication No. 6-56681

  However, the conventional refrigerator needs to be designed in consideration of the thermal effect of the interior lamp 105, and has a problem that the cost increases. In addition, the shape of the interior lamp 105 provided with the lamp socket has a problem that the interior shape becomes uneven and lacks in design and looks bad.

  The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a refrigerator that is low in cost and has improved designability around the interior lamp, visibility of food, and the like.

  In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a lamp cover formed of a transparent resin in front of the substrate, wherein the LED light-emitting element is disposed on the substrate and used as an interior lamp. The cover has an arc shape in cross section and a plurality of convex portions formed on the outer surface along the arc shape.

  Further, in the refrigerator having the LED light emitting element arranged on the substrate and used as an interior lamp, the refrigerator includes a lamp cover formed of a transparent resin in front of the substrate, and the lamp cover has an arc shape in cross section and an orthogonal direction of the arc shape. A plurality of plane portions are formed along the inner surface.

  Further, in the refrigerator having the LED light emitting element disposed on the substrate and used as an interior lamp, the refrigerator is provided with a lamp cover formed of a transparent resin in front of the substrate, and the lamp cover has an arc-shaped cross section and an arc-shaped outer surface. A plurality of projections are formed along the inner surface in the orthogonal direction of the arc shape.

  Thereby, the light from the LED light emitting element can be efficiently diffused and irradiated in the chamber by the lamp cover.

  The refrigerator of the present invention uses an LED light emitting element for the interior light, and can efficiently diffuse and irradiate the light from the LED light emitting element into the interior by the lamp cover, the design around the interior light, food, etc. Visibility can be improved.

  The invention according to claim 1 is a refrigerator in which an LED light emitting element is arranged on a substrate and used as an interior lamp. The refrigerator includes a lamp cover formed of a transparent resin in front of the substrate, and the lamp cover has an arc shape in cross section. In addition, the outer surface is formed with a plurality of convex portions along an arc shape, and LED light with high directivity can be continuously diffused radially in the left and right directions along the arc shape, so that foods in the warehouse can be visually confirmed. Efficiency can be improved efficiently.

  The invention according to claim 2 is a refrigerator in which an LED light emitting element is arranged on a substrate and used as an interior lamp. The refrigerator includes a lamp cover formed of a transparent resin in front of the substrate, and the lamp cover has an arc shape in cross section. In addition, a plurality of plane portions are formed along the inner surface of the arc shape in the orthogonal direction, and the LED light having high directivity can be continuously diffused and irradiated in the vertical direction of the arc shape in a straight line. Visibility of foods and the like can be improved efficiently.

  According to a third aspect of the present invention, in the refrigerator in which the LED light-emitting element is disposed on the substrate and used as an interior lamp, the refrigerator is provided with a lamp cover formed of a transparent resin in front of the substrate, and the lamp cover has an arc shape in cross section. In addition, the outer surface is formed with a plurality of convex portions along the arc shape, and the plurality of flat portions are formed along the inner surface of the arc shape in the orthogonal direction. In addition to continuously diffusing vertically and linearly, LED light can be continuously diffused and irradiated radially along the arc shape to further improve the visibility of foods in the cabinet. . Moreover, the appearance at the time of irradiation and the designability can be improved by diffusing LED light vertically and horizontally.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, further comprising a plurality of shelves on the upper and lower sides of the cabinet, wherein the LED light emitting elements are arranged on a vertically long substrate, and the vertically long substrate is It is arranged across the plurality of shelves on the inner wall surface, and the visibility of foods and the like can be efficiently enhanced over the upper and lower sides in the warehouse.

  The invention according to claim 5 is the invention according to claim 4, comprising a plurality of shelves above and below the cabinet, and a plurality of LED light emitting elements are arranged in the vertical direction of the vertically long substrate, and at least the LED light emitting elements are It is arranged between a plurality of shelves, and the visibility of foods and the like can be further efficiently increased over the top and bottom of the storage while increasing the illuminance in the storage.

  The invention according to claim 6 is the invention according to claim 4 or 5, wherein the plurality of shelves are configured by glass shelves, and further by the light transmission and reflection action of the glass shelves It is possible to improve the design properties and the visibility of foods.

  The invention according to claim 7 is the invention according to any one of claims 4 to 6, further comprising a duct and a duct cover for cooling the inside of the warehouse on the back of the warehouse, and attaching the vertically long board to the duct cover. Therefore, it is possible to improve the attachment of the interior lamp and the assembly of the refrigerator.

  The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein a temperature sensor for controlling the internal temperature is integrally arranged on the vertically long substrate, and the substrate of the temperature sensor By using both the LED board and the LED board, the cost can be further reduced and the assembly of the refrigerator can be improved.

The invention according to claim 9 uses the flammable refrigerant in the refrigeration cycle in the invention according to any one of claims 1 to 8, and prevents global warming in addition to the above effects. In a refrigerator to which a refrigerant that can be applied is applied, the ignition factor from the interior lamp can be eliminated, and the safety of the refrigerator can be improved. Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a front view of the refrigerator according to Embodiment 1 of the present invention with the door removed, FIG. 2 is a schematic perspective view of components in the refrigerator compartment of the embodiment, and FIG. 3 is the refrigerator according to the embodiment. FIG. 4 is a perspective view of the lamp cover of the refrigerator according to the embodiment, FIG. 5A is a front view of the lamp cover of the refrigerator according to the embodiment, and FIG. FIG. 6 is a cross-sectional view taken along the line BB of the lamp cover of the refrigerator of the embodiment, FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 5, and FIG.

  In FIG. 1 to FIG. 3, the refrigerator 1 has a refrigerator compartment 2 in the upper part and a freezer compartment 3 in the lower part through a heat insulating partition wall 4. In the refrigerator compartment 2, a plurality of glass shelves 5 are provided on the upper and lower sides, and a resin decorative member is attached to the front edge of the glass shelf 5. A storage container 7 that can be pulled out forward is provided at the lowermost part of the refrigerator compartment 2.

  In addition, a duct 8 made of styrene foam for supplying cool air from a cooler and a fan (not shown) to the inside of the refrigerator is provided on the rear surface of the refrigerator compartment 2, and a duct made of resin so as to cover the duct 8 A cover 9 is provided. The duct cover 9 has a concave portion 14 for accommodating the vertically long substrate 10 at a substantially central portion in the left-right direction, and has a discharge port 12 at the top and a suction port 13 at the bottom. Further, the duct cover 9 has projections 15 in the vicinity of the left and right side surfaces, and serves as a stopper for contacting the inner surface of the glass shelf 5. In addition, a lamp cover 11 is provided on the front surface of the vertically long substrate 10 and is attached to the duct cover 9 after the substrate 10 is mounted.

  Further, a plurality of LED light emitting elements 16 are arranged on the vertically long substrate 10 so as to be soldered to the conduction circuit 17 and energized from the electric wires 18, and the vertically long substrate 10 is disposed across the plurality of glass shelves 5. To do. And the receiving part 21 of the glass shelf 5 is integrally provided in the inner box so that the LED light emitting element 16 may be arranged between at least the plurality of glass shelves 5. Further, a door switch 22 is provided on a side surface in the refrigerator compartment 2 to detect opening / closing of a rotary refrigerator compartment door that covers the front surface of the refrigerator compartment 2.

  In addition, a temperature sensor 20 that controls the internal temperature is integrally disposed below the substrate 10 and is electrically connected to the control substrate (not shown) from the electric wire 19.

  Further, the plurality of LED light emitting elements 16 are linearly arranged on the vertically long substrate 10, and the dimensions between the respective LED light emitting elements 16 are substantially equal.

  The lamp cover 11 is formed of a transparent resin, and has a circular cross section as shown in FIG. 6, and a round-shaped convex portion 22 is formed on the outer surface along the circular arc shape. The convex portion 22 has a constant pitch in the vertical direction. A plurality are formed.

  Moreover, the plane part 23 is formed in the up-down direction along the inner surface in the orthogonal direction of the arc shape, and a plurality of plane parts 23 are formed radially in the circumferential direction of the arc shape.

  Further, a claw 24 is integrally formed on the upper and lower and left and right end portions of the lamp cover 11, and is attached to the duct cover 9 with the claw 24 after the substrate 10 is mounted.

  And the round shape R dimension of the convex part 22 and the width dimension W of the plane part 23 are made substantially the same, The dimension is set to about 2-4 mm.

  Note that isobutane, which is a flammable refrigerant, is applied to the refrigeration cycle constituting the refrigeration apparatus of the refrigerator 1 of the present invention, and the operation of the compressor is controlled by the temperature sensor 20 in the refrigerator compartment 2.

  In the above configuration, the operation will be described below.

  By controlling the operation of the compressor and fan by the temperature sensor 20 in the refrigerator compartment 2, the cool air from the cooler is cooled from the discharge port 12 through the duct 8, and returned to the cooler from the suction port 13. The inside of the refrigerator compartment 2 is cooled to a predetermined temperature.

  When the rotary refrigerator door that covers the front of the refrigerator compartment 2 is opened, the LED light emitting element 16 is energized from the control board to the LED light emitting element 16 by the door switch 22, and the LED light emitting element 16 as the interior lamp emits light and irradiates the interior. .

  At this time, the lamp cover 11 is formed of a transparent resin, the cross section is an arc shape, the outer surface is formed with a round-shaped convex portion 22 along the arc shape, and a plurality of the convex portions 22 are formed at a constant pitch in the vertical direction. Therefore, the highly directional light emitted from the LED light emitting element 16 is continuously diffused and irradiated radially in the left and right direction along the arc shape through the convex portion 22, and the visibility in the width direction of food in the warehouse is improved. It can be increased efficiently.

  Further, the flat surface portion 23 is formed in the vertical direction along the inner surface of the arc-shaped orthogonal direction, and a plurality of the flat surface portions 23 are formed radially in the circumferential direction of the arc shape, so that the LED light emitting element 16 emits light. Light having high directivity can be continuously diffused and irradiated in a straight line through the flat portion 23, and the visibility of food in the warehouse can be efficiently enhanced.

  In addition, by forming a plurality of round-shaped convex portions 22 along the circular arc shape on the outer surface of the lamp cover 11 and a plurality of plane portions 23 in the orthogonal direction (vertical direction) of the circular arc shape along the inner surface at the same time. The highly directional light emitted by the light emitting element 16 is first diffused continuously in a straight line through the flat part 23, and further diffused and irradiated in a radial pattern along the arc shape through the convex part 22. Thus, the visibility of food in the storage can be further increased efficiently, and the appearance and design as an interior light during irradiation with LED light can be improved.

  Moreover, since the LED light-emitting element 16 is used as the interior light, even when isobutane, which is a flammable refrigerant, is applied to the refrigeration cycle constituting the refrigerator refrigeration apparatus, even if the refrigerant leaks, ignition from the interior light The factor can be eliminated and the safety of the refrigerator can be increased.

  Further, a plurality of LED light emitting elements 16 are arranged on the vertically long substrate 10 so as to be soldered to the conduction circuit 17 and energized from the electric wires 18, and the vertically long substrate 10 is disposed across the plurality of glass shelves 5. As a result, the depth of the interior lamp can be reduced and the interior can be used effectively. Moreover, the visibility of the design around the interior lamp, the food, etc. can be enhanced by causing the interior back surface to emit light for a long time across the plurality of glass shelves 5 in the vertical direction.

  Moreover, since the LED light-emitting element 16 is arranged between at least the plurality of glass shelves 5, the light from the LED light-emitting element can be made to reach the entire interior, and the visibility of foods and the like is further improved. Can do.

  Moreover, since the plurality of LED light emitting elements 16 are linearly arranged on the vertically long substrate 10 and the dimensions between the LED light emitting elements 16 are substantially equal, the balance of the plurality of light emitting units on the substrate 10 is balanced. In addition, it is possible to further improve the designability around the interior lamp and the visibility of foods and the like.

  Moreover, since the shelf of the refrigerator compartment 2 is composed of a plurality of glass shelves 5, the light permeability and reflection action of the glass shelves 5 can further enhance the designability around the interior lamp, the visibility of food, and the like. it can.

  In addition, a duct 8 and a duct cover 9 for cooling the interior of the refrigerator compartment 2 are provided on the back of the refrigerator compartment 2, a vertically long board 10 is mounted in the recess 14 of the duct cover 9, and a lamp cover 11 is further provided so as to cover the front of the board 10. It is incorporated in the duct cover 9 with the claw 24, and can improve the attachment of the interior lamp and the assembly of the refrigerator.

  In addition, since the temperature sensor 20 for controlling the internal temperature is integrally disposed at the lower part of the substrate 10, the use of the substrate of the temperature sensor 20 and the LED substrate 10 further reduces the cost and the assembly of the refrigerator. Can be improved.

  In the present embodiment, the linearly arranged on the vertically long substrate 10 and the dimensions between the LED light emitting elements 16 are substantially equal to each other. However, the plurality of LED light emitting elements 16 are arranged on the vertically long substrate 10. Arranged linearly on the top, non-uniform dimensions between the LED light emitting elements 16, for example, the upper LED spacing is closer than the lower, the central LED is closer, the lower LED spacing is upper It may be closer. Thereby, the intensity of light can be set on the vertically long substrate, and the visibility of new designs, foods, etc. according to the respective shelf installation shapes can be improved. In addition, the respective LED light emitting elements may be arranged in a staggered manner on the substrate 10.

  Further, in the present embodiment, a description has been given of a single LED light emitting element 16 arranged with a predetermined interval in the vertical direction, but a plurality of LED light emitting elements concentratedly arranged with a predetermined interval in the vertical direction. May be arranged. In this case, the illuminance inside the cabinet can be increased efficiently.

  In the present embodiment, the refrigerator 2 has the door switch 22. However, the door switch 22 may not be provided, and continuous energization may be performed in synchronization with the power source of the refrigerator. In this case, the door switch 22 can be omitted, and the cost can be further reduced.

  Moreover, although the receiving part 21 of the glass shelf 5 is integrally provided in the inner box in the refrigerator compartment 2, this receiving part 21 is provided more than the number of the glass shelves 5 in the side surface in the refrigerator compartment 2, and the glass shelf 5 is provided. The LED light-emitting element 16 is set so as to be positioned between the plurality of glass shelves 5 in any state where the glass shelves 5 are arranged in each of the receiving portions 21, while improving the usability of the shelves. The visibility of foods and the like can be reliably increased.

  In the present embodiment, the convex portion 22 is formed on the outer surface of the lamp cover 11 and the flat portion 23 is formed on the inner surface. However, the present invention is not limited to this, and the convex portion is formed on the inner surface. A flat portion may be formed on the outer surface.

  In the present embodiment, the convex portion 22 and the flat portion 23 are formed integrally with the lamp cover 11. However, it is of course possible to combine each or only one of them separately.

  As described above, the refrigerator according to the present invention uses an LED light emitting element for the interior light, and can efficiently diffuse and irradiate the light from the LED light emitting element into the interior by the lamp cover. Therefore, it can be applied to general uses of refrigeration equipment using LED light emitting elements as interior lamps.

The front view of the state which removed the door of the refrigerator in Embodiment 1 of this invention Schematic component perspective view in the refrigerator compartment of the refrigerator of the same embodiment Front view of LED mounting board of refrigerator of the embodiment The perspective view of the lamp cover of the refrigerator of the embodiment (A) Front view of the lamp cover of the refrigerator according to the embodiment (b) BB sectional view of the lamp cover of the refrigerator according to the embodiment AA line sectional view of FIG. C part enlarged view of the BB line cross section of FIG. Schematic sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Cold room 5 Glass shelf 8 Duct 9 Duct cover 10 Board | substrate 11 Lamp cover 16 LED light emitting element 20 Temperature sensor 22 Convex part 23 Plane part

Claims (9)

  In a refrigerator in which an LED light emitting element is arranged on a substrate and used as an interior lamp, a lamp cover formed of a transparent resin is provided in front of the substrate, and the lamp cover has an arc shape in cross section and an arc surface on an outer surface. And a plurality of convex portions.   In a refrigerator in which an LED light emitting element is disposed on a substrate and used as an interior lamp, a lamp cover formed of a transparent resin is provided in front of the substrate, and the lamp cover has an arc shape in cross section and an arc shape in an orthogonal direction. A refrigerator characterized in that a plurality of flat portions are formed along a surface.   In a refrigerator in which an LED light emitting element is arranged on a substrate and used as an interior lamp, a lamp cover formed of a transparent resin is provided in front of the substrate, and the lamp cover has an arc shape in cross section and an arc surface on an outer surface. The refrigerator is characterized in that a plurality of projections are formed along a circular arc-shaped inner surface in the orthogonal direction.   A plurality of shelves are provided on the upper and lower sides of the cabinet, the LED light emitting elements are arranged on a vertically long substrate, and the vertically long substrate is arranged on the inner wall surface across the plurality of shelves. A refrigerator according to claim 1.   5. The apparatus according to claim 4, wherein a plurality of shelves are provided on the upper and lower sides of the cabinet, a plurality of LED light emitting elements are arranged in a vertical direction of the vertically long substrate, and at least the LED light emitting elements are arranged between the plurality of shelves. Refrigerator.   The refrigerator according to claim 4 or 5, wherein the plurality of shelves are configured by glass shelves.   The refrigerator according to any one of claims 4 to 6, further comprising a duct and a duct cover for cooling the interior of the interior of the refrigerator, and the vertically long board attached to the duct cover.   The refrigerator according to any one of claims 4 to 7, wherein a temperature sensor for controlling the internal temperature is integrally disposed on the vertically long substrate.   The refrigerator according to any one of claims 1 to 8, wherein a flammable refrigerant is used in the refrigeration cycle.

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