JP5370195B2 - refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems wherein in conventional refrigerators, although measures to form round convex parts along a circular arc shape on the outer surface of a lamp cover at vertical constant pitches or form a plurality of plane parts in the orthogonal direction of the circular arc shape along the inner surface of the lamp cover are taken to diffuse light of an LED used for interior lighting, since the light of the LED with high luminance and high directivity is not sufficiently and uniformly diffused to the entire interior side of the refrigerator only by the lamp cover, variation and unevenness of brightness occur depending on a place within the refrigerator so as to cause non-uniform visibility of food within the refrigerator due to phenomena such as shadow and darkness at corners within the refrigerator, and the insufficient diffusion of the light of the LED causes uncomfortable glare such as glaring of the LED and a portion around the LED. <P>SOLUTION: This refrigerator includes a reflecting plate reflecting light irradiated by an LED toward a food storage part of the refrigerator. Thus, the refrigerator eliminates uneven luminance, suppresses glare by the light of the LED and enhances the visibility of food stored in the food storage part in the refrigerator. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator provided with interior lighting.

  In the conventional refrigerator, as in Patent Document 1, a substrate in which a plurality of LEDs are arranged in the approximate center of a duct cover that forms a rear side surface on the back side of the refrigerator compartment is provided on the front side of the refrigerator, that is, on the front side of the refrigerator compartment. A light emitting diode (LED), which is a semiconductor element that emits light by applying voltage from the outside, is attached to the front surface of the LED, and an arc-shaped lamp cover is mounted on the front surface of the LED, and the light emitted from the LED inside the cabinet Is diffused by the lamp cover and directly irradiated.

JP 2008-75887A (page 5-8, Fig. 1-4)

  In the conventional refrigerator, in order to diffuse the light of the LED used for interior lighting, the outer surface of the lamp cover is formed with round-shaped convex portions along the circular arc at a constant pitch, Measures are taken to form a plurality of flat portions in the orthogonal direction of the arc shape along the surface. However, LED light with high brightness and high directivity is uneven when the lamp cover alone is not sufficiently diffused throughout the food storage part of the refrigerator, and the brightness varies and varies depending on the location of the food storage part of the refrigerator. For example, there is a problem that the visibility of the food in the food storage unit is not uniform, for example, a shadow or darkness is formed in the corner of the food storage unit. Moreover, since the diffusion of the light of the LED is insufficient, there is a problem of generating unpleasant glare that the LED and the peripheral portion where the LED is installed are dazzling.

  Moreover, in order to reduce the darkness in a store | warehouse | chamber and to raise the visibility of the foodstuff of a food storage part, when the brightness | luminance of LED was increased or the number of LED was increased, there existed a subject which generate | occur | produced more intense and unpleasant glare. In order to avoid the concentration of LED light, if the number of LEDs is increased and dispersed in the refrigerator, it will interfere with the arrangement of ducts that send cold air to the food storage section, and the number of LEDs will increase. However, there was a problem of increasing power consumption.

  The present invention has been made in order to solve the above-described problems, and eliminates uneven illumination without increasing the number of LEDs or obstructing the arrangement of the cold air duct in the refrigerator, and thus glare due to the light of the LEDs. It is an object to obtain a refrigerator that suppresses the above and improves the visibility of food in the food storage section of the refrigerator.

  This invention provides the reflecting plate which reflects the light which LED irradiates toward the food storage part of a refrigerator.

  Since this invention provided the reflecting plate which reflects the light which LED irradiates toward the food storage part of a refrigerator, the illuminance unevenness is eliminated, the glare by the light of LED is suppressed, and the visibility of the food in the food storage part of the refrigerator is reduced. An enhanced refrigerator can be obtained.

It is a front view of the state which removed the door of the refrigerator in Embodiment 1 of this invention. It is an assembly drawing of the duct in the refrigerator in Embodiment 1 of this invention. It is ZZ sectional drawing of FIG. 1 in Embodiment 1 of this invention. It is the elements on larger scale of the reflecting plate in Embodiment 1 of this invention.

Embodiment 1 FIG.
1 is a front view of a refrigerator with a front door removed in Embodiment 1 of the present invention, FIG. 2 is an assembly drawing of a duct in the refrigerator in Embodiment 1 of the present invention, and FIG. 3 is an embodiment of the present invention. ZZ cross-sectional view around the interior lighting in FIG. 1 in the first embodiment, that is, the LED which is a semiconductor element that emits light by applying the voltage in FIG. FIG.

In FIG. 1, reference numeral 1 denotes a refrigerator main body in which a heat insulating material is formed in a box shape and the front surface is opened and the remaining five surfaces are made of heat insulating material. The freezer compartment 4 is formed. The left and right side surfaces, the upper surface, and the rear surface of the refrigerator compartment 3 are constituted by the inner wall of the refrigerator body. In the refrigerator compartment 3, the refrigerator compartment 3 can be divided into upper and lower parts and food can be placed thereon, and a plurality of parts can be removed and moved. A storage container 6 that can be pulled out forward is installed at the bottom. Further, a front door (not shown) that can be opened and closed is provided on the front surface of the refrigerator body 1, that is, on the front surface of the refrigerator body 1.
A duct 7 (not shown) is provided on the back side of the refrigerating room 3 in FIG. 1, that is, on the rear side, and is fixed to the inner wall on the rear side of the refrigerating room 3, that is, the inner wall on the rear side of the refrigerator body 1. On the front surface of the duct 7, a duct cover 8 made of synthetic resin having excellent design properties is fixed to the duct 7 and the inner wall of the refrigerator body 1 to cover the duct 7. The duct 7 is made of foamed polystyrene or the like that supplies cold air from the freezer compartment 4 into the refrigerator compartment 3. Further, in front of the duct cover 8, a food storage part of the refrigerator compartment 3 for storing food provided with shelves 5 and the like is disposed, and the duct cover 8 constitutes a rear surface part of the food storage part. That is, the duct cover 8 is divided into a food storage part and a side part on the rear side of the refrigerator compartment 3 where the duct 7 is disposed.

  FIG. 2 is a perspective view showing a place where the duct 7, the duct cover 8 and its peripheral parts are assembled. The duct 7 is provided with two right and left air passages for passing cold air, and there is an opening 7g between the left air passage and the right air passage, that is, in the center of the duct 7, and the duct opening 7g. The reflector 12 curved in an arc shape is fitted and fixed. The duct cover 8 also has openings 8g and 8h in the center. When the duct cover 8 is attached to the duct 7, the duct cover openings 8g and 8h are formed on the front surface of the reflector 12 fitted in the duct opening 7g. The reflected light reflected by the reflecting plate 12 irradiates the inside of the refrigerator compartment 3 through the duct cover openings 8g and 8h. That is, the reflecting plate 12 is fixed between the duct cover 8 and the inner wall on the rear side of the refrigerator body 1, that is, on the side surface on the rear side of the refrigerator compartment 3. And a right wind path are arranged. The column 8k between the duct cover openings 8g and 8h is hollow and serves as a housing for the LED board 9. That is, the LED substrate 9 is accommodated in the LED accommodating portion of the support column 8 k which is a duct cover 8.

In the vertically long LED substrate 9 in FIG. 2, at least one LED 10 is arranged and mounted in the longitudinal direction of the vertically long substrate, and is provided on the top, bottom, left and right of a transparent resin LED storage holder 11 having translucency. The LED board 9 is attached to the board holding part. FIG. 3 is a view in which the LED storage holder 11 is fitted into the support column 8k so that the LED substrate 9 is stored in the LED storage portion of the support column 8k. That is, the LED storage portion of the support column 8k has an opening on the surface in the direction in which the LED 10 emits light, and the LED storage holder 11 is attached to the opening so as to be a cover or a lid of the LED storage portion of the support column 8k. The opening is closed. As a result, the LED storage portion of the column 8k that stores the LED substrate 9 becomes the light source portion of the present apparatus. As shown in FIG. 3, the LED board 9 is mounted so that the surface on which the LED 10 is mounted faces the LED storage holder 11 side, that is, the reflecting plate 12 side. Further, when the duct cover 8 is attached to the duct 7, the column 8 k is fitted into the notches 12 a and 12 b of the reflector 12 and fixed as shown in FIG. 2. That is, the light source portion having the LED 10 as a light source is disposed in the concave central portion of the reflector 12 that is curved into the arc shape by fitting the support column 8k and the notches 12a and 12b. Light emitted from the LED 10 as a light source in the opposite direction to the food storage unit of the refrigerator compartment 3 passes through the LED storage holder 11 and is reflected by the reflector 12 and stored in the food storage unit and the food storage unit of the refrigerator compartment 3. Irradiated with the finished food.
Note that the LED 10 used as the light source of the light source unit is a semiconductor element that emits light when voltage is applied from the outside. The product life is longer than incandescent bulbs, etc. On the other hand, in order to use the interior lighting of the refrigerator, the brightness and directivity of the light emitted from the semiconductor element are also high.

  Further, as shown in FIG. 3, a single straight V-groove 11a is provided on the inner surface of the LED storage holder 11 so as to extend from the top to the bottom of the LED storage holder 11. A V-groove 11a is arranged on the front surface of the LED 10, that is, a position facing the LED 10 when the holder 11 is attached. The left and right end surfaces of the LED storage holder 11 are provided with chamfered side surfaces 11b and 11c. When the LED storage holder 11 is attached to the column 8k of the duct cover 8, the side surfaces 11b and 11c are in front of the refrigerator compartment 3, that is, the food storage unit side and the refrigerator main body 1. It arrange | positions so that it may face the front, ie, the front door side. Most of the light emitted from the LED 10 passes through the LED storage holder 11, but a part of the light, particularly the light emitted in front of the LED 10, is refracted by the V-groove 11a of the LED storage holder 11, and is distributed left and right. In other words, the process proceeds separately on the left and right. The light distributed to the left and right travels in the resin of the LED storage holder 11 and strikes the side surfaces 11b and 11c which are the left and right end surfaces. Since the side surfaces 11b and 11c are chamfered and face the front of the refrigerator compartment 3, the light hitting the side surfaces 11b and 11c is refracted again by the surfaces of the side surfaces 11b and 11c, and the front of the refrigerator compartment 3, that is, the food storage unit and the refrigerator. The light is emitted in the direction of the front door of the main body 1.

  Further, 7a to 7f of the duct 7 are cold air outlets that are fed into the refrigerator compartment 3 through the two right and left cold air passage portions of the duct 7, and when the duct cover 8 is attached to the duct 7, the duct cover 8, 8 a to 8 f, that is, the duct cover outlets are connected to the duct outlets 7 a to 7 f, and form outlets to the refrigerator compartment 3. The solid line A in FIG. 2 schematically shows the air path of the cold air in the duct 7, and the cold air cooled by the cooler in the freezer compartment 4 below is placed on both sides of the central reflector 12 by a fan (not shown). A duct 7 is lifted from the left and right air passages and blown from the duct outlets 7a to 7f to the refrigerator compartment 3 through the duct cover outlets 8a to 8f, and is below the refrigerator compartment 3 (not shown). The refrigerator compartment 3 is cooled by returning to the cooler from the suction port. The cooler is composed of a compressor, a condenser, and a cooling device connected by piping with a throttle, and the refrigerant circulates in the interior. The refrigerant compressed by the compressor is a refrigerator. The heat is taken from the air inside, and the heat is dissipated outside the refrigerator by the condenser, and it returns to the compressor again. By this circulation, that is, the refrigeration cycle, the cooler cools the air to cool air. The room temperature adjustment of the refrigerator compartment 3, that is, the amount and temperature of the cold air is adjusted by a temperature sensor provided in the refrigerator compartment 3, and the operation of the compressor and the fan is adjusted according to the temperature detected by the temperature sensor. Control the temperature.

Next, LED irradiation will be described. In FIG. 3, the LED substrate 9 on which the LED 10 is mounted is attached to the LED storage holder 11, and the LED storage holder 11 is attached to the column 8k so that the LED substrate 9 is stored in the LED storage portion of the column 8k. It serves as a cover for the opening of the storage part and closes the opening. The support column 8k is disposed at the concave center portion of the reflecting plate 12 curved in an arc shape, and the LED 10 and the surface of the LED substrate 9 on which the LED 10 is mounted and the LED storage holder 11 to which the LED substrate 9 is attached are the reflecting plate 12. Facing. The light emitted from the LED 10 in the direction opposite to the food storage unit of the refrigerator compartment 3 is transmitted through the LED storage holder 11 and reflected by the reflector 12, and the light of the refrigerator compartment 3 on the opposite side of the reflector 12 across the duct cover 8. The food storage unit, for example, the shelf 5 is irradiated. At this time, the LED substrate 9 and the reflection plate 12 are vertically long, and the shelf 5 is irradiated with the reflected light from the horizontal direction, that is, the lateral direction, so that the reflected light can be irradiated over a wide range.
Therefore, in order to disperse the light of the LED 10 having high brightness and directivity, the reflecting plate 12 is curved in a circular arc shape so as to surround the LED 10, disperses the reflected light, and uneven illuminance of the irradiated food storage unit. This eliminates the glare caused by LED light and improves the visibility of food stored in the refrigerator compartment 3.
Further, in order to increase the light reflection efficiency, the reflecting surface of the reflecting plate 12 may be mirror-finished. However, in the case of mirror finishing, it is necessary to work on the shape and surface of the reflecting plate 12 so that the reflected light flux does not concentrate again at one point.

  Further, the light is not sufficiently dispersed and irradiated to the entire refrigerating chamber 3 simply by curving the reflecting plate into an arc shape. For example, the width of about 160 mm × width of the internal plane having a width of about 510 mm × depth of about 500 mm is sufficient. In the reflector 12 having a depth of about 45 mm (in FIG. 3, the width is a dimension and the depth b dimension) and the radius R is about 95 mm, the dimension between the LED 10 and the facing surface B of the reflector 12 is 30 mm or more. For example, even if the reflected light is reflected by the reflecting plate 12, the luminous flux is not concentrated at one point, the reflected light is dispersed, and the illuminance unevenness of the food storage unit irradiated with the light is eliminated, and the light of the LED is used. The glare of some reflected light can be suppressed.

Moreover, when the internal volume of the refrigerator compartment 3 becomes large, dispersion | distribution of the light to the whole food storage part is still inadequate, and illumination intensity nonuniformity may arise. Therefore, a diamond-cut shape is provided on the reflecting surface of the reflecting plate 12 to diffusely reflect the reflected light within the reflecting surface of the reflecting plate 12, finely disperse the light, and efficiently irradiate light without uneven illuminance. FIG. 4 shows an example of a diamond cut shape provided on the reflection plate 12.
4A is an enlarged view of a part of the reflecting surface of the reflecting plate 12 provided with a diamond-cut shape, and FIG. 4B further shows one diamond-cut piece of FIG. 4A. It is the one taken out. The diamond cut in FIG. 4B is a structure in which trusses (triangular skeleton structures) are three-dimensionally combined, and is a quadrangular pyramid that is convex at the center and is made up of four triangular faces. The horizontal dimension x is about 8 mm to about 15 mm, the vertical dimension y is about 30 mm to about 40 mm, and the height dimension z from the bottom surface of the quadrangular pyramid to the convex vertex is about 0.5 mm to about 1.0 mm. . FIG. 4 (a) is a combination of the quadrangular pyramids of FIG. 4 (b). In addition, LED10 is arrange | positioned in the position facing the convex vertex of this square pyramid. When the light from the LED hits one surface of the diamond cut, which is a quadrangular pyramid, it reflects while changing its straight direction, and hits and reflects another surface of the diamond cut. Depending on the path of light and the angle of reflection, it is repeated several times and applied to the food storage section of the refrigerator compartment 3. That is, when there is no diamond cut shape, the LED light is irradiated to the food storage part of the refrigerator compartment 3 by one or two reflections, but the diamond cut shape causes irregular reflection whose direction is not determined, and several times. Reflected above, the food storage part of the refrigerator compartment 3 is irradiated. Due to this irregular reflection, light having directivity is irradiated in a distributed manner vertically and horizontally without focusing.

Therefore, by providing the reflecting plate 12 with a diamond-cut shape, the reflected light irradiated to the food storage section of the refrigerator compartment 3 is further diffused, so that unevenness in illuminance is suppressed and the visibility of the food stored in the refrigerator compartment 3 is improved. In addition to being able to improve, the light is softened by the reflected light that repeatedly reflects and disperses, so even if the reflected light from the reflector 12 directly enters the eyes without looking into the refrigerator compartment 3, , No discomfort or dazzling.
In addition, due to the diamond-cut shape, the reflected light applied to the food storage part of the refrigerator compartment 3 is mostly horizontal, that is, the horizontal direction. Also improves.
In addition, you may provide a diamond-cut shape in what carried out the mirror surface process of the reflective surface of the reflecting plate 12. FIG. Since the reflection efficiency is increased by the mirror finish, sufficient illuminance can be obtained even after irregular reflection.

As one embodiment of the present invention, the reflector 12 having a length of about 350 mm × width of about 160 mm is provided with about 10 diamond cuts × about 18 breadths as shown in FIG. About 7 LEDs 10 are mounted on the LED substrate 9 that is formed in a diamond-cut shape and is formed in a vertically long shape of about 350 mm. The reflector 12 occupies about 23% of the rear side of the food storage section excluding the portion occupied by the drawer-shaped storage container 6 in the refrigerator compartment 3, which is about 490 mm long × about 500 mm wide. It is arrange | positioned in the center part, ie, the center part of the rear surface part of the food storage part. Further, in the central part of the reflecting plate 12, a vertically long LED substrate 9 on which the LED 10 is mounted is housed in the LED housing portion of the column 8k of the duct cover 8 so that light is irradiated in the direction of the reflecting plate 12, and the light source of this apparatus Has become a department. The light source section has a length that occupies about 60% or more with respect to the height dimension of the rear surface of the food storage section excluding the storage container 6 of the refrigerator compartment 3, similarly to the vertically long reflector 12. That is, the food storage unit is partitioned by the plurality of shelves 5 provided in the refrigerator compartment 3, that is, the plurality of shelves 5 of the food storage unit, and has a length that is arranged across at least one storage unit arranged above and below. It has a light source part and a reflecting plate so that the reflected light spreads over the food placed on each shelf. Two openings 8g and 8h having a length of about 350 mm × width of about 65 mm or more are provided on both sides of the column 8 k where the light source is provided, and the reflected light reflected by the reflecting plate 12 is reflected in the storage container 6 in the internal volume of the refrigerator compartment 3. In addition to irradiating the inner volume of about 500 mm in length, about 510 mm in width, and about 500 mm in depth with no illuminance unevenness, the storage container 6 is also irradiated with light so that it can be seen.
With the configuration as described above, the LED is used as a light source, and light having strong directivity from the light source is reflected and dispersed by a reflecting plate, so that unevenness in illuminance in the refrigerator compartment 3 is eliminated and the light source becomes a blind spot. The illuminance is ensured even at the position, and it can be visually recognized no matter where the food is stored in the refrigerator compartment 3, and glare caused by light having high directivity of the light source and high brightness is reflected as direct light from the light source. To alleviate and relieve visibility and discomfort caused by glare.
In the duct 7, the cool air path (solid line A in FIG. 2) can secure about 84% excluding the reflector 12 on the rear side surface of the refrigerator compartment 3, and does not hinder the cooling in the refrigerator compartment 3. Sufficient cold air can be sent to the refrigerator compartment 3. That is, since the light source section using LEDs as the light source is centrally arranged at a predetermined location, it does not interfere with the cold air path or the outlet.
Moreover, since the light source part which uses LED as a light source and a reflector are not arrange | positioned on wall surfaces other than the surface which arrange | positions the duct of the refrigerator compartment 3, the internal volume of the refrigerator compartment 3 can be used effectively for food storage. . Furthermore, it is not necessary to provide complicated wiring for LED arrangement on the inner wall of the refrigerator compartment 3 when assembling the refrigerator. Moreover, since it is not necessary to increase the number of LEDs in order to eliminate unevenness in illuminance, power consumption can also be suppressed.

In the case of a refrigerator with a small volume, it is possible to prevent uneven illumination even if the reflecting surface of the reflecting plate 12 is not necessarily provided with a diamond cut shape or mirror finish. That is, only the mirror surface processing may be performed on the reflection surface of the reflection plate 12, or only a diamond cut shape may be applied. In addition, neither of them may be necessary. In addition, when the mirror surface processing is performed on the reflecting surface of the reflecting plate 12, a mapping of the food storage unit is projected on the reflecting surface of the reflecting plate 12 in addition to the light of the LED 10, causing an illusion that the inside of the refrigerator compartment 3 can be seen widely. The effect can also be expected.
Further, the reflecting surface of the reflecting plate 12 may be subjected to dimple processing instead of the diamond cut shape.

Further, although the light dispersion is given only to the reflection surface of the reflection plate 12, the LED storage holder 11, that is, the cover of the LED storage part, may have a light dispersion function. Since the LED 10 has high luminance and strong directivity, when passing through the LED storage holder 11, the light is once dispersed and further dispersed on the reflecting surface of the reflecting plate 12. In particular, if the directivity is strong, the light emitted from the LED 10 in FIG. 3 goes straight and hits the facing surface B, and most of the light goes straight back to the LED 10 and does not reach the refrigerator compartment 3. Therefore, if the LED storage holder 11 has left and right dispersion, the irregular reflection of the arc-shaped reflecting surface of the reflecting plate 12 can be effectively used, and the irradiation is evenly distributed into the refrigerator compartment 3 to eliminate uneven illumination. Easy to adjust. For example, when one straight and continuous V groove 11a is provided across the top and bottom of the LED storage holder 11 at a position facing the LED 10 of the LED storage holder 11 as shown in FIG. The light traveling straight forward, that is, toward the facing surface B first hits the V groove 11a. In the V-groove 11a, the light hitting the V-groove 11a is refracted and divided into right and left, travels inside the LED housing holder 11 made of transparent resin, and strikes the side surfaces 11b and 11c which are the left and right end faces of the LED housing holder 11. The side surfaces 11b and 11c are chamfered and face the front side of the refrigerator compartment 3, that is, the food storage unit side and the front surface of the refrigerator body 1, that is, the front door side. The side and the food storage part side of the refrigerator compartment 3 are irradiated. That is, it is possible to reduce the light that does not reach the refrigerating chamber 3 where the light emitted from the LED 10 is reflected by the facing surface B and returns to the position of the LED 10, and the amount of light irradiated to the refrigerating chamber 3 can be increased. Therefore, it is not necessary to widen the reflecting plate 12 or to complicatedly process the reflecting surface of the reflecting plate 12, and the double dispersion effect of the reflecting plate 12 and the LED storage holder 11 can be obtained. Dispersion and irradiation are possible.
Further, since the light of the LED 10 is reflected inside the transparent resin of the LED storage holder 11 by the V groove 11a and is irradiated from the left and right side surfaces 11b and 11c of the LED storage holder 11, the left and right ends of the LED storage holder 11 The side surfaces 11b and 11c of the glass plate appear to emit light, and the design of the refrigerator compartment 3 can be improved.
Moreover, although the example which provides the V-groove 11a in the position facing LED10 of the LED storage holder 11 has been described, a groove of any shape may be used as long as light is dispersed. Moreover, it does not need to be provided in the LED housing holder 11 surface facing LED10, and the groove | channel may not be one but may be multiple. Further, as long as it can be refracted, it may be a flat surface instead of a groove, or a convex or concave lens surface. Alternatively, the material may be partially changed so that the material can be refracted.
Further, the reflecting surface of the reflecting plate 12 is curved in a circular arc shape to the left and right so as to surround the light source part by placing the LED accommodating part of the support column 8k of the duct cover 8 accommodating the LED as the light source in the center. Although the light is dispersed in the light, the function of dispersing the light up and down is small. Therefore, the LED storage holder 11 may have a function of dispersing light up and down. This eliminates uneven illumination in the vertical direction in the food storage unit, thereby further improving the visibility of the food.

Further, the LED storage holder 11 is made of a transparent resin so as not to hinder the light transmission of the LED 10, but the LED storage holder 11 is colored to change the color of light after passing through the LED storage holder 11, You can weaken it. Further, the LED storage holder 11 may have a filter function for polarizing or blocking light of an arbitrary wavelength. Accordingly, it is possible to suppress an unpleasant color when the food is visually recognized, or a situation where only reflected light is repeatedly reflected, diffracted and refracted, and only light having an unpleasant wavelength is concentrated on one point. Moreover, the color of light can also be adjusted in design by coloring.
The same effect can be obtained by changing the color of the light when the light is reflected on the reflecting surface of the reflecting plate 12.
In addition to the coloring of the LED storage holder 11, the emission color of the LED 10 may be changed, or the emission color of the LEDs 10 mounted on the LED substrate 9 may be changed for each LED 10. In addition, if the illuminance unevenness of the food storage unit is eliminated, the brightness and voltage of the LEDs 10 mounted on the LED substrate 9 may be changed for each LED 10 by adjusting the current and voltage of the LEDs. Because of the reflected light with relaxed directivity by the reflecting plate 12, the color and brightness emitted by the individual LEDs can be mixed to produce light without discomfort. Moreover, the adjustment which adjusts the voltage and electric current which flow into LED, and softens the light which reaches | attains a food storage part with the structure is also possible. Furthermore, it is also possible to change the illuminance of the food storage unit by adjusting the voltage and current flowing through the LED during the time period, for example, day and night.

The LED 10 is mounted on the vertically long LED board 9, and the mounting position of the LED 10 can be changed and rearranged in the LED board 9 in accordance with the position of the shelf 5 that differs depending on the size and type of the refrigerator, so that food is placed. The LED 10 can be easily arranged so as to illuminate the place, and the parts and the board can be shared.
It should be noted that the mounting arrangement of the LEDs 10 on the LED board 9 is unevenly arranged even if they are arranged in a single vertical line in the vertical direction of the vertically long board, as long as the illuminance unevenness of the reflected light reaching the food storage unit is eliminated. However, it does not matter, and further, it may be an arrangement of two or more vertical lines, or a staggered arrangement instead of one vertical line. The LED substrate 9 may be composed of two or more substrates divided vertically or horizontally. For example, in this embodiment, one vertical board on which LEDs are mounted is attached to the LED storage holder 11 and stored in the LED storage section. However, the two boards divided into two at the upper part and the lower part are the LED storage holder 11. It may be attached to and stored in the LED storage section. When the LED substrate 9 is thin and vertically long, it is possible to avoid the problem that the base material constituting the substrate is easily warped or broken. By dividing the substrate into a plurality of parts, it is possible to change the length of the substrate without changing the total length of the light source unit and avoid the problem.
In addition to the LEDs 10, sensors such as a temperature sensor and switches may be mounted on the LED substrate 9. Since electronic components that are separately mounted and arranged in the periphery can be arranged in a lump, space saving and assembling can be improved.
The base material of the LED substrate 9 is a general material such as bakelite, paper phenol resin, glass epoxy, etc., but may be a flexible printed circuit board. In that case, although the conductor of a base material is copper, it can permeate | transmit light because it is a polyimide film otherwise. Therefore, the light irradiated to the LED board 9 side from LED10 light-shielded by the base material can also be reflected in the LED storage portion and irradiated to the reflecting plate 12 side. Further, the LED storage part, that is, the food storage part side of the column 8k of the duct cover 8 can be made transparent, or an opening part can be provided for direct irradiation. Moreover, in the case of a general material, it is necessary to make a base material thick and to give thickness to an LED storage part, but in the case of a flexible printed circuit board, since a base material is thin, an LED storage part can be made thin. Even if the rear side surface portion of the refrigerator compartment 3 composed of the duct 7 and the duct cover 8 is thinned, the space between the reflector 12 and the LED 10 can be secured, so that useless space is reduced and the internal volume is increased. In addition, since the flexible printed circuit board is lighter than general materials, there is no need for a holder having sufficient strength for fixing the circuit board to the LED housing, and it is possible to use an adhesive tape or the like, and the assemblability is improved. Further, the printed circuit board on which the LED is mounted may be a molded product integrated with the LED storage holder 11.

Further, the LED substrate 9 is stored in the LED storage portion of the support column 8k of the duct cover 8, and the LED storage holder 11 is sealed as a cover of the LED storage portion of the support column 8k so that it can be stored in the refrigerator compartment 3 by any chance. Even if some food or drinking water is spilled, the LED board 9 is not touched, so that it is possible to prevent an electric shock due to electric leakage or a fire accident due to tracking.
However, as long as the LED substrate 9 is subjected to moisture proofing and drip proofing and there is no problem of tracking, the LED storage portion and the LED storage holder 11 do not necessarily have to be sealed. That is, there may be a gap in a portion where the LED storage portion and the LED storage holder 11 are fitted, or a hole through which air enters and exits the LED storage portion or the LED storage holder 11 may be formed.

  In addition, since LEDs are used as the light source for lighting, a flammable refrigerant is applied to the refrigeration cycle of the refrigerator cooling device, and even if the refrigerant leaks, the cause of ignition due to the light source of the lighting is eliminated. Safety can be increased.

In addition, although the reflecting plate 12 was demonstrated in the example attached to the duct 7, the location which attaches may be the duct cover 8, and may be directly attached to the inner wall of the refrigerator main body 1. Moreover, although the LED storage part which accommodates the LED board 9 was demonstrated with the example integrated with the duct cover 8, if it is the structure where LED is arrange | positioned in the center of the reflecting plate 12, it will be in duct cover 8 later. A structure for attaching the LED storage portion may be used. Moreover, the structure which attaches an LED accommodating part to the reflecting plate 12 or the duct 7 may be sufficient.
Further, although the LED substrate 9 has been described as being held by the LED storage holder 11, the location for holding the LED substrate 9 may be the LED storage portion.

In the present invention, the reflector and the light source are described in an example in which one place is provided in the center of the rear surface portion of the food storage unit and two air passages are provided on the left and right sides. The number of reflectors may be one and two on the left and right. At this time, since the illuminance does not decrease with respect to a single reflector, there is no need to increase the area of the reflector or increase the number of LEDs, and ensure an equal air path volume. It does not impair capacity or increase power consumption. In addition, the reflector and the light source may be arranged not on the rear surface of the food storage unit but on the left and right side surfaces, or on the left and right corners formed by the rear side surface and the left and right side surfaces.
Moreover, although this invention demonstrated in the example which provided the reflecting plate and the light source part in the refrigerator compartment, this may be provided in a freezer compartment. Moreover, you may provide in a vegetable room and a chilled room, and you may provide in the room which switches and uses the room of those temperature zones.

  As described above, the present invention uses LED as a light source and has a length that is more than half of the total height of the rear surface of the food storage unit, that is, the food storage unit is partitioned by a plurality of shelves and arranged across at least one storage unit arranged above and below. By reflecting and dispersing light with strong directivity from a vertically long light source unit having a length that is long by using a vertically long reflector having the same length as the light source disposed on the rear side of the food storage unit The illuminance unevenness of the whole food storage part of the refrigerator compartment is eliminated, and the illuminance is secured and visible even when the food is stored at a position where it becomes a blind spot from the light source, and the directivity of the light source is strong and generated by light with high luminance Visibility of food in the refrigerator that reduces glare and reduces discomfort and dazzling by reducing glare by using glare as reflected light using a reflector against direct light from the light source Is good Refrigerator is obtained. In addition, this lighting prevents cold air ducts and airways from interfering with performance, reducing the internal volume, increasing the number of lighting light sources, and reducing power consumption. A refrigerator with good performance and power consumption efficiency can be obtained.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Partition wall 3 Refrigeration room 4 Freezing room 5 Shelf 6 Storage container 7 Duct 7a Duct blow-out port 1
7b Duct outlet 2
7c Duct outlet 3
7d Duct outlet 4
7e Duct outlet 5
7f Duct outlet 6
7g Duct opening 8 Duct cover 8a Duct cover outlet 1
8b Duct cover outlet 2
8c Duct cover outlet 3
8d Duct cover outlet 4
8e Duct cover outlet 5
8f Duct cover outlet 6
8g Duct cover opening 1
8h Duct cover opening 2
8k Prop 9 LED board 10 LED
11 LED storage holder 11a V groove 11b LED storage holder side 1
11c LED storage holder side 2
12 Reflector 12a Reflector cutout 1
12b Reflector cutout 2

Claims (4)

A refrigerator body in which a heat insulating material is formed in a box shape;
A refrigeration room disposed in the upper part of the partition wall provided inside the refrigerator body and partitioned vertically,
A duct that is provided on the rear side of the refrigeration room and supplies cold air to a food storage unit disposed inside the refrigeration room and covered with a duct cover;
A light source unit that is arranged in the duct or the duct cover and that has a plurality of LEDs arranged in at least one row in the vertical direction and irradiates light of the LEDs in the opposite direction to the food storage unit;
A reflector that is provided together with the light source unit and reflects the light emitted by the light source unit toward the food storage unit and is curved in an arc shape so as to surround the light source unit;
Equipped with a,
The light source unit includes an LED substrate on which the LEDs are arranged and mounted;
An LED storage portion provided in the duct or the duct cover and provided with an opening for storing the LED substrate and allowing the light of the LED to pass through;
A refrigerator comprising: an LED storage portion cover provided in the LED storage portion and closing the opening and having translucency . Refrigerator according to claim 1, wherein the LED provided on the LED housing section cover is provided with at least one or more grooves refractive diffuses light to be irradiated. Wherein the food storage unit comprising a plurality of shelves for dividing vertically, the light source unit and the reflective plate, according to claim 1 or 2, characterized in that disposed over at least one or more of the shelf refrigerator. The refrigerator according to any one of claims 1 to 3 , wherein a diamond cut shape is provided on a reflection surface of the reflection plate.

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