JP2012154578A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that reduces, irrespective of a position of a LED illumination in a storage compartment, the occurrence of light-dark contrast between an upper section and a central section of the storage compartment.SOLUTION: The refrigerator includes: a first LED group 210b placed in proximity to the center of a lighting unit 200 in which a plurality of LEDs 210 are arranged in parallel; and a second LED group 210a arranged in parallel at both ends of the first LED group 210b. In the lighting unit 200, the illuminance of the second LED group 210a is set high while that of the first LED group 210b is set low, thus reducing unevenness in the light-dark contrast inside the refrigerator compartment 102.

Description

本発明は、冷蔵庫に関し、特に、庫内を照明する半導体発光素子を備える冷蔵庫に関する。   The present invention relates to a refrigerator, and more particularly, to a refrigerator including a semiconductor light emitting element that illuminates the interior of the refrigerator.

従来、庫内に光を照射する半導体発光素子を備えている冷蔵庫が知られている。例えば、特許文献１には、冷蔵庫の庫内天面に、半導体発光素子である発光ダイオードを有する照明装置を備えている冷蔵庫が開示されている。この半導体発光素子は、照射する光の光軸が鉛直方向に向くように配置され、鉛直方向下向きに光を照射することで、冷蔵庫の庫内を明るく照らすことができる。   Conventionally, a refrigerator including a semiconductor light emitting element that irradiates light in a cabinet is known. For example, Patent Document 1 discloses a refrigerator including a lighting device having a light emitting diode that is a semiconductor light emitting element on the top surface of the refrigerator. This semiconductor light emitting element is arranged so that the optical axis of the light to be irradiated is directed in the vertical direction, and the interior of the refrigerator can be illuminated brightly by irradiating light downward in the vertical direction.

また、冷蔵庫に半導体発光素子を設ける場合、結露などから半導体発光素子を保護すべく、カバー部材を設けることが一般に行われている。   Moreover, when providing a semiconductor light emitting element in a refrigerator, providing a cover member is generally performed in order to protect the semiconductor light emitting element from condensation or the like.

特開２００１−８２８６９号公報JP 2001-82869 A

昨今の冷蔵庫においては、庫内の視認性を向上させるため、冷蔵庫の手前側（開口部側）から奥側に向けて光を照射する構成が広く採用されるに至っている。ところが、このような構成を採用した場合、庫内の一部分が暗く感じる場合がある。このような庫内の暗さを解消するためには、配置する半導体発光素子の数を増加させたり、半導体発光素子自体の発光強度を上げたりすればよいが、これでは消費電力が増加して好ましくない。   In recent refrigerators, in order to improve the visibility inside the refrigerator, a configuration in which light is irradiated from the front side (opening side) to the back side of the refrigerator has been widely adopted. However, when such a configuration is adopted, a part of the interior may feel dark. In order to eliminate such darkness in the cabinet, the number of semiconductor light emitting elements to be arranged may be increased or the light emission intensity of the semiconductor light emitting element itself may be increased, but this increases power consumption. It is not preferable.

また、貯蔵室内の上下位置また中央位置とでは明るさが異なり、特にＬＥＤ照明の場合、ＬＥＤの特性上、指向性があり照射角度外では、光が届きにくく暗くなり、また複数のＬＥＤの光軸が交わる部分では明るくなりすぎ、１つの貯蔵室内でも複数のＬＥＤに対する場所の違いによって大きく明暗部分ができる虞がある。   In addition, the brightness differs between the vertical position and the central position in the storage room. Especially in the case of LED lighting, the LED has directivity due to the characteristics of the LED, and it is difficult for light to reach outside the irradiation angle. There is a possibility that a bright and dark part may be formed greatly due to the difference in the location for a plurality of LEDs even in one storage room due to excessive brightness at the part where the axes intersect.

このように、従来の冷蔵庫では、複数のＬＥＤの設置場所に関係なく、一定の照度となるように制御されているので、貯蔵室の中央部分は複数のＬＥＤによって照度が大きく、両端部分はＬＥＤの光が届きにくいので照度が小さくなるという問題がある。   As described above, in the conventional refrigerator, the illuminance is controlled to be constant regardless of the place where the plurality of LEDs are installed. There is a problem that the illuminance becomes small because it is difficult for the light to reach.

本願発明は、このような問題に鑑みてなされたものであり、複数のＬＥＤを並べて設置したＬＥＤ照明を備えた冷蔵庫に対して、貯蔵室に対するＬＥＤ照明の配置に関係なく、貯蔵室内に明暗部分ができるのを低減した冷蔵庫を提供することを目的とする。   This invention is made | formed in view of such a problem, irrespective of arrangement | positioning of LED lighting with respect to a storage room with respect to the refrigerator provided with LED lighting which installed several LED side by side, a light-dark part in a storage room An object of the present invention is to provide a refrigerator that can reduce the amount of food that can be produced.

上記目的を達成するために、本願発明にかかる冷蔵庫は、複数のＬＥＤが並んで設置したＬＥＤ照明に対して、中央部近傍に位置する第１のＬＥＤ群と、第１のＬＥＤ群の両端に並んで配置された第２のＬＥＤ群を備え、第２のＬＥＤ群の照度を高く設定し、第１のＬＥＤ群の照度を低く設定したＬＥＤ照明装置を備えたことを特徴とする。   In order to achieve the above object, a refrigerator according to the present invention has a first LED group located in the vicinity of the central portion and an end of the first LED group with respect to LED lighting in which a plurality of LEDs are installed side by side. The second LED group arranged side by side is provided, the illuminance of the second LED group is set to be high, and the LED illumination device in which the illuminance of the first LED group is set to be low is provided.

これによれば、第１のＬＥＤ群の照度を第２のＬＥＤ群の照度よりも低く設定することで、第１のＬＥＤ群の前方に位置する貯蔵室の中央部分は、相対的に照度が低い第１のＬ
ＥＤ群の配光と、さらに相対的に照度が高い第２のＬＥＤ群の指向性の中央よりも外側の配光とが合わさって照射されて照明され、貯蔵室の両側部分は、相対的に照度が高い第２のＬＥＤ群の指向性の中央部分の配光によって照射されるので、貯蔵室の中央空間と両側空間との照度は、大きく変わらず、両側空間も明るく照明することが可能となる。 According to this, by setting the illuminance of the first LED group to be lower than the illuminance of the second LED group, the central portion of the storage room located in front of the first LED group has a relatively high illuminance. Low first L
The light distribution of the ED group and the light distribution outside the center of the directivity of the second LED group having a relatively high illuminance are irradiated and illuminated, and both side portions of the storage room are relatively Since it is irradiated by light distribution in the central part of the directivity of the second LED group with high illuminance, the illuminance between the central space of the storage room and both side spaces does not change significantly, and both side spaces can be illuminated brightly. Become.

さらに、貯蔵室の高さ方向にＬＥＤを配置したＬＥＤ実装基板を、上下複数段の棚の前端部よりも前に配置し、最上段の棚に対応する第２ＬＥＤ群の照度は前記最上段の棚と最下段の棚の間に配置された中央の棚に対応する第１ＬＥＤ群の照度よりも高くなるように設定されているものである。   Furthermore, the LED mounting substrate in which the LEDs are arranged in the height direction of the storage room is arranged in front of the front end portion of the upper and lower shelves, and the illuminance of the second LED group corresponding to the uppermost shelf is the uppermost shelf. It is set so as to be higher than the illuminance of the first LED group corresponding to the central shelf arranged between the shelf and the lowermost shelf.

これによれば、貯蔵室のドアを開放したときに、ＬＥＤ照明が点灯して貯蔵室内を見たときに最上段の棚は、第２ＬＥＤ群の照明によって明るく、中央の棚付近は第１ＬＥＤ群の照明と第２ＬＥＤ群の照明の指向性の外側域の低下した照度の照明とによって照射されるので、最上段の棚部分と中央部分の棚部分とでは明暗の差がなくなり、全体的に明るさのムラを低減した照明で庫内を照射することが可能となる。   According to this, when the door of the storage room is opened, when the LED lighting is turned on and the storage room is viewed, the uppermost shelf is brightened by the illumination of the second LED group, and the vicinity of the central shelf is the first LED group. And the illumination of reduced illuminance in the outer area of the directivity of the second LED group are eliminated, so there is no difference in brightness between the uppermost shelf and the central shelf, and the overall brightness is high. It is possible to illuminate the interior with illumination with reduced unevenness.

本願発明により、貯蔵室内のＬＥＤ照明による明るさのムラを低減し、貯蔵室内の上下部分でも中央部分と同じ視認性を確保することができる。   By this invention, the nonuniformity of the brightness by LED illumination in a storage room can be reduced, and the same visibility as a center part can be ensured also in the upper and lower parts in a storage room.

本願発明の実施の形態にかかる冷蔵庫を正面から示す平面図The top view which shows the refrigerator concerning embodiment of this invention from the front 冷蔵室を形成する副箱体を正面から示す平面図The top view which shows the subbox which forms a refrigerator compartment from the front 冷蔵室の断面状態を側面から示す平面図Plan view showing the cross-sectional state of the refrigerator compartment from the side 冷蔵室の断面状態（図３のＧ−Ｇ線対応）を上方から示す平面図The top view which shows the cross-sectional state (corresponding to the GG line of FIG. 3) of the refrigerator compartment from above 主箱体の内壁に配置される照明ユニットの断面を上方から示す平面図A plan view showing a cross section of the lighting unit arranged on the inner wall of the main box from above 照明ユニットの電気回路図Electrical circuit diagram of lighting unit

以下、本願発明に係る冷蔵庫の実施の形態について、図面を参照しながら説明する。   Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings.

図１は、本願発明の実施の形態にかかる冷蔵庫を正面から示す平面図である。   FIG. 1 is a plan view showing a refrigerator according to an embodiment of the present invention from the front.

同図に示すように、本実施の形態にかかる冷蔵庫１００は、前面に開口する主箱体１０１を備えている。また、主箱体１０１は、内方が区画されて形成される複数の副箱体を備えている。   As shown in the figure, a refrigerator 100 according to the present embodiment includes a main box 101 that opens to the front. Further, the main box body 101 includes a plurality of sub-box bodies that are formed by dividing the inside.

ここで、主箱体１０１は、前面に開口部を有する箱体であり、冷蔵庫１００の内方と外方との熱の出入りを遮断する断熱性能を備えている。   Here, the main box 101 is a box having an opening on the front surface, and is provided with a heat insulating performance that blocks heat from entering and exiting the inside and outside of the refrigerator 100.

冷蔵庫１００が備える副箱体は、その機能（冷却温度）によって冷蔵室１０２、製氷室１０５、製氷室１０５に併設され庫内の温度が変更できる切換室１０６、野菜室１０４、および冷凍室１０３をそれぞれ形成している。   The sub-box provided in the refrigerator 100 includes a refrigerating room 102, an ice making room 105, a switching room 106, a vegetable room 104, and a freezing room 103, which are provided in the ice making room 105 and can change the temperature in the refrigerator, depending on the function (cooling temperature). Each is formed.

冷蔵室１０２の前面開口部には、例えばウレタンのような発泡断熱材を発泡充填した回転式の断熱扉１０７が設けられている。   At the front opening of the refrigerator compartment 102, a rotary heat insulating door 107 filled with foam heat insulating material such as urethane is provided.

また、製氷室１０５、切換室１０６、野菜室１０４、および冷凍室１０３の前面開口部にはそれぞれ引き出しが設けられている。製氷室１０５、切換室１０６、野菜室１０４、冷凍室１０３はそれぞれ、断熱性能を備えた前板１０８により冷気の漏れがないように開
閉可能に密閉される。 In addition, drawers are provided in front opening portions of the ice making chamber 105, the switching chamber 106, the vegetable chamber 104, and the freezing chamber 103, respectively. Each of the ice making room 105, the switching room 106, the vegetable room 104, and the freezing room 103 is hermetically sealed by a front plate 108 having heat insulation performance so as not to leak cold air.

図２は、冷蔵室を形成する副箱体を正面から示す平面図である。   FIG. 2 is a plan view showing the sub-box body forming the refrigerator compartment from the front.

図３は、冷蔵室を形成する副箱体の断面状態を側面から示す平面図である。   FIG. 3 is a plan view showing a sectional state of the sub-box body forming the refrigerator compartment from the side.

これらの図に示すように、冷蔵庫１００は、主箱体１０１の内壁に配置され、主箱体１０１の開口部近傍から奥側に向けて主箱体１０１内方を照明する照明ユニット２００を備えている。また、冷蔵庫１００は、主箱体１０１の内方に、収容物が載置される棚板１１０を着脱可能に備えている。具体的には、冷蔵室１０２の内方に、平板状のガラス製の５枚の棚板１１０が配置されている。   As shown in these drawings, the refrigerator 100 includes an illumination unit 200 that is disposed on the inner wall of the main box body 101 and illuminates the inside of the main box body 101 from the vicinity of the opening of the main box body 101 toward the back side. ing. Moreover, the refrigerator 100 is provided with the shelf board 110 in which the accommodation thing is mounted in the main box body 101 inside so that attachment or detachment is possible. Specifically, five flat plate-like shelf plates 110 are arranged inside the refrigerator compartment 102.

図４は、冷蔵室を形成する副箱体の断面状態（図３のＧ−Ｇ線の位置における断面状態）を上方から示す平面図である。   FIG. 4 is a plan view showing a cross-sectional state (a cross-sectional state at the position of line GG in FIG. 3) of the sub-box body forming the refrigerator compartment from above.

同図に示すように、照明ユニット２００は、主箱体１０１の内壁の一つである両側壁にそれぞれ設けられている凹陥部１２０に埋設されている。   As shown in the figure, the illumination unit 200 is embedded in a recessed portion 120 provided on each side wall which is one of the inner walls of the main box body 101.

図５は、主箱体の内壁に配置される照明ユニットの断面を上方から示す平面図である。   FIG. 5 is a plan view showing a cross section of the illumination unit arranged on the inner wall of the main box body from above.

同図に示すように、照明ユニット２００は、主箱体１０１の内方を照明するユニットであって、半導体発光素子２１０と、カバー部材２２０とを備えている。   As shown in the figure, the illumination unit 200 is a unit that illuminates the inside of the main box body 101, and includes a semiconductor light emitting element 210 and a cover member 220.

カバー部材２２０は、半導体発光素子２１０を主箱体１０１内方の雰囲気から遮断する部材である。これにより、主箱体１０１の内方に湿った空気が入り込んできたような場合でも、半導体発光素子２１０やそれが取り付けられている基板２２３に露が付着することを回避できる。本実施の形態の場合、カバー部材２２０は、半導体発光素子２１０の主箱体１０１内方側を覆う板状の部材であり、樹脂を成型して得られる部材である。カバー部材２２０は、透過部２２１及び支持部２２２とを備えている。   The cover member 220 is a member that blocks the semiconductor light emitting element 210 from the atmosphere inside the main box body 101. Accordingly, even when moist air enters the inside of the main box 101, it is possible to avoid dew from adhering to the semiconductor light emitting element 210 and the substrate 223 to which the semiconductor light emitting element 210 is attached. In the present embodiment, the cover member 220 is a plate-like member that covers the inner side of the main box body 101 of the semiconductor light emitting element 210, and is a member obtained by molding a resin. The cover member 220 includes a transmission part 221 and a support part 222.

透過部２２１は、半導体発光素子２１０が放射する光を透過させるカバー部材２２０の部分であって、図５に示すように、主箱体１０１内方に面する当該透過部の外面に垂直な軸である透過軸Ａが半導体発光素子２１０の配置される冷蔵室１０２の内壁面に垂直な軸である内壁軸Ｃよりも奥側（図５中矢印Ｄ側）に傾くように配置される部分である。透過部２２１は、可視光を透過することができる透明な樹脂で構成されている。   The transmission part 221 is a part of the cover member 220 that transmits the light radiated from the semiconductor light emitting element 210 and has an axis perpendicular to the outer surface of the transmission part facing inward of the main box 101 as shown in FIG. The transmission axis A is a portion arranged so as to be inclined to the back side (arrow D side in FIG. 5) with respect to the inner wall axis C which is an axis perpendicular to the inner wall surface of the refrigerator compartment 102 where the semiconductor light emitting element 210 is arranged. is there. The transmission part 221 is made of a transparent resin that can transmit visible light.

支持部２２２は、主箱体１０１に取り付けられ、主箱体１０１に対して透過部２２１を支持するカバー部材２２０の部分である。本実施の形態の場合、支持部２２２は、樹脂を成型することにより透過部２２１と共に一体に形成されている。   The support part 222 is a part of the cover member 220 that is attached to the main box body 101 and supports the transmission part 221 with respect to the main box body 101. In the case of the present embodiment, the support part 222 is integrally formed with the transmission part 221 by molding resin.

また、主箱体１０１の奥側に位置する支持部２２２は、凹陥部１２０を形成する内壁に密着するような形状となっている。このようにすることで、カバー部材２２０を取り付けた状態において、支持部２２２が凹陥部１２０の形状に沿って配置される当該支持部２２２には光が透過しない。   Further, the support portion 222 located on the back side of the main box body 101 has a shape that is in close contact with the inner wall that forms the recessed portion 120. By doing so, light is not transmitted to the support part 222 in which the support part 222 is arranged along the shape of the recessed part 120 in a state where the cover member 220 is attached.

なお、支持部２２２は、透過部２２１と一体に形成する必要はなく、別体として存在する透過部２２１を支持する部材であってもかまわない。   In addition, the support part 222 does not need to be formed integrally with the transmission part 221, and may be a member that supports the transmission part 221 that exists as a separate body.

半導体発光素子２１０は、光を発生させ、主箱体１０１の内方に向けて光を放射する発光素子である。本実施の形態の場合、半導体発光素子２１０は、ＬＥＤ（Ｌｉｇｈｔ Ｅ
ｍｉｔｔｉｎｇ Ｄｉｏｄｅ）が採用されており、薄く細長い矩形の基板２２３に複数個並べて取り付けられている。 The semiconductor light emitting element 210 is a light emitting element that generates light and emits light toward the inside of the main box body 101. In the case of the present embodiment, the semiconductor light emitting element 210 is an LED (Light E
Miting Diode) is employed, and a plurality of thin and long rectangular substrates 223 are mounted side by side.

本実施の形態の場合、半導体発光素子２１０は、主箱体１０１の内壁に陥没状に設けられる凹陥部１２０（図５参照）に収容された状態で配置されている。また、半導体発光素子２１０が放射する光の中心軸である光軸Ｂが透過部２２１の外面の法線である透過軸Ａよりも開口部側（図５中矢印Ｅ）に向くように半導体発光素子２１０は配置されている。   In the case of the present embodiment, the semiconductor light emitting element 210 is arranged in a state of being housed in a recessed portion 120 (see FIG. 5) provided in a recessed shape on the inner wall of the main box body 101. Further, the semiconductor light emission is performed such that the optical axis B, which is the central axis of the light emitted from the semiconductor light emitting element 210, is directed to the opening side (arrow E in FIG. 5) with respect to the transmission axis A, which is the normal line of the outer surface of the transmission part 221. The element 210 is arranged.

また、半導体発光素子２１０は、上下方向に所定の間隔で一列に配置されており、棚板１１０よりも開口部よりに配置されている（図３参照）。また、半導体発光素子２１０の少なくとも幾つかは、棚板１１０が配置されている高さと同じ高さに配置され、光軸Ｂが棚板１１０に向いた状態で配置されている（図３参照）。これによれば、棚板１１０の影の発生により庫内が暗くなることを抑制することが可能となる。つまり、棚板１１０はガラスなど透明な材質で形成されるが、棚板１１０の周縁部は光を透過しにくい枠で囲まれることがある。半導体発光素子２１０の高さと棚板１１０の高さがほぼ一致すると、半導体発光素子２１０から放射される光による前記枠の影は、棚板１１０に沿って伸び、他の棚板などに映り込むことがないためである。   Further, the semiconductor light emitting elements 210 are arranged in a line at predetermined intervals in the vertical direction, and are arranged closer to the opening than the shelf 110 (see FIG. 3). Further, at least some of the semiconductor light emitting elements 210 are disposed at the same height as the shelf plate 110 is disposed, and are disposed with the optical axis B facing the shelf plate 110 (see FIG. 3). . According to this, it becomes possible to suppress that the inside of a store | warehouse | chamber becomes dark by generation | occurrence | production of the shadow of the shelf board 110. FIG. That is, the shelf board 110 is formed of a transparent material such as glass, but the peripheral edge of the shelf board 110 may be surrounded by a frame that does not easily transmit light. When the height of the semiconductor light emitting element 210 and the height of the shelf board 110 substantially coincide, the shadow of the frame due to the light emitted from the semiconductor light emitting element 210 extends along the shelf board 110 and is reflected on other shelf boards and the like. This is because there is nothing.

なお、少なくとも最上段に位置する棚板１１０と最上段に位置する半導体発光素子２１０との高さは一致することが好ましい。これにより、最上段に位置する棚板１１０の前方の枠の影が冷蔵庫１００の内部天面に映り込むことを低減できるからである。従って、冷蔵庫１００の天面で反射する光の量を多くすることができ、庫内全体を明るく照明することができる。   In addition, it is preferable that at least the height of the shelf plate 110 positioned at the uppermost level and the height of the semiconductor light emitting element 210 positioned at the uppermost level are the same. Thereby, it is possible to reduce the shadow of the frame in front of the shelf plate 110 positioned at the uppermost stage from being reflected on the internal top surface of the refrigerator 100. Therefore, the amount of light reflected by the top surface of the refrigerator 100 can be increased, and the entire interior can be illuminated brightly.

ここで、半導体発光素子２１０は、光軸Ｂが透過軸Ａと同方向、または、光軸Ｂが透過軸Ａよりも開口部側に向くように配置することが好ましい。光軸Ｂが透過軸Ａよりも奥側（図５中矢印Ｄ）に向くように半導体発光素子２１０を配置すると、半導体発光素子２１０から放射される光の一部がカバー部材２２０の支持部２２２に遮られることにより、主箱体１０１の内方を効率よく照明することができないためである。また、光軸Ｂが透過軸Ａよりも開口部側に向くように半導体発光素子２１０を配置すれば、凹陥部１２０の深さを薄くしても凹陥部１２０の内方に半導体発光素子２１０を配置することができ、冷蔵庫１００の断熱性能の低下を抑制できるからである。   Here, the semiconductor light emitting element 210 is preferably arranged so that the optical axis B is in the same direction as the transmission axis A, or the optical axis B is closer to the opening side than the transmission axis A. When the semiconductor light emitting element 210 is arranged so that the optical axis B is directed to the back side (arrow D in FIG. 5) from the transmission axis A, a part of the light emitted from the semiconductor light emitting element 210 is supported by the support portion 222 of the cover member 220. This is because the inside of the main box 101 cannot be efficiently illuminated by being blocked by the light. Further, if the semiconductor light emitting element 210 is arranged so that the optical axis B is directed to the opening side with respect to the transmission axis A, the semiconductor light emitting element 210 is placed inside the recessed part 120 even if the depth of the recessed part 120 is reduced. It is because it can arrange | position and the fall of the heat insulation performance of the refrigerator 100 can be suppressed.

以上のように、主箱体１０１の開口部近傍から奥側に向く光軸Ｂを有する半導体発光素子２１０を覆うカバー部材２２０に、光軸Ｂよりも透過軸Ａが奥側に向く透過部２２１を設けることで、半導体発光素子２１０から放射される光を効率よく透過させることができ、主箱体１０１の内方を明るく照明することができる。また、透過部２２１の全体を凹陥部１２０内方に配置しているため、カバー部材２２０が主箱体１０１の内壁面から突出することがなく、主箱体１０１の内空間を広く確保することができ、主箱体１０１に収容される収容物の出し入れに際し透過部２２１や支持部２２２が邪魔になることを防止できる。   As described above, the cover member 220 that covers the semiconductor light emitting element 210 having the optical axis B facing the back side from the vicinity of the opening of the main box body 101 has the transmission part 221 with the transmission axis A facing the back side rather than the optical axis B. By providing the light, the light emitted from the semiconductor light emitting element 210 can be transmitted efficiently, and the inside of the main box 101 can be illuminated brightly. Further, since the entire transmission part 221 is arranged inside the recessed part 120, the cover member 220 does not protrude from the inner wall surface of the main box body 101, and a large internal space of the main box body 101 is ensured. Thus, it is possible to prevent the transmission part 221 and the support part 222 from interfering with the taking in / out of the contents accommodated in the main box 101.

また、奥側に位置する支持部２２２は、凹陥部１２０を形成する内壁に密着して配置されているので、支持部２２２による影の発生を抑制することができる。従って、半導体発光素子２１０から放射される光は、効率よく冷蔵室１０２内を照射し、庫内を明るく照明することができる。   Moreover, since the support part 222 located in the back | inner side is arrange | positioned closely to the inner wall which forms the recessed part 120, generation | occurrence | production of the shadow by the support part 222 can be suppressed. Therefore, the light emitted from the semiconductor light emitting element 210 can efficiently irradiate the inside of the refrigerator compartment 102 and illuminate the interior brightly.

また半導体発光素子２１０の光軸Ｂを透過部２２１の透過軸Ａより開口部側に傾けたので、凹陥部１２０の深さを薄くすることができ、冷蔵庫の断熱性能の低下を抑制することができる。   Further, since the optical axis B of the semiconductor light emitting element 210 is inclined toward the opening side from the transmission axis A of the transmission part 221, the depth of the recessed part 120 can be reduced, and the deterioration of the heat insulating performance of the refrigerator can be suppressed. it can.

また、半導体発光素子２１０やカバー部材２２０は、内壁に配置されればよく、本実施の形態のように天井部に当たる内壁ばかりでなく、側壁に当たる内壁や、床部に当たる内壁に配置されるものでもよい。また、半導体発光素子２１０やカバー部材２２０は、冷蔵室１０２ばかりでなく冷凍室１０３や野菜室１０４、製氷室１０５、切換室１０６に配置されるものでもよい。   Further, the semiconductor light emitting element 210 and the cover member 220 may be arranged on the inner wall, and may be arranged not only on the inner wall that hits the ceiling as in the present embodiment, but also on the inner wall that hits the side wall or the inner wall that hits the floor. Good. Further, the semiconductor light emitting element 210 and the cover member 220 may be disposed not only in the refrigerator compartment 102 but also in the freezer compartment 103, the vegetable compartment 104, the ice making room 105, and the switching room 106.

そして、図３のように、複数個の半導体発光２１０は、最上段の１段目の棚板１１０、および２段目の棚板１１０に対応して複数個の半導体発光素子２１０ａが前方に配置され、
略中央の棚板１１０となる３段目の棚板１１０の前方には半導体発光素子２１０ｂが配置され、４段目と最下段の５段目の棚板１１０の前方に対応して配置した複数個の半導体発光素子２１０ａが配置されている。 As shown in FIG. 3, a plurality of semiconductor light emitting devices 210 are arranged in front of a plurality of semiconductor light emitting elements 210 a corresponding to the first shelf plate 110 at the uppermost stage and the shelf plate 110 at the second stage. And
A semiconductor light emitting element 210b is disposed in front of the third-stage shelf board 110, which is the substantially central shelf board 110, and a plurality of parts arranged corresponding to the front of the fourth-stage and the fifth-stage shelf board 110. The semiconductor light emitting elements 210a are arranged.

半導体発光素子２１０ａ、２１０ｂの上下間隔は等間隔で設置されて基板２２３に実装されている。   The semiconductor light emitting elements 210a and 210b are mounted on the substrate 223 at equal intervals.

また、図６のように、略中央部の棚板１１０の前方に位置する半導体発光素子２１０ｂ（第１ＬＥＤ群という）と、その上下方向に配置された半導体発光素子２１０ａ（第２ＬＥＤ群という）は、それぞれ電気回路上、並列回路で接続されており、第１ＬＥＤ群と第２ＬＥＤ群に流れる電流を一定にせず、第１ＬＥＤ群と第２ＬＥＤ群の照度を変えている。   In addition, as shown in FIG. 6, a semiconductor light emitting element 210b (referred to as a first LED group) positioned in front of the shelf plate 110 at a substantially central portion and a semiconductor light emitting element 210a (referred to as a second LED group) arranged in the vertical direction thereof are These are connected in parallel circuit on the electric circuit, and the currents flowing through the first LED group and the second LED group are not made constant, and the illuminance of the first LED group and the second LED group is changed.

具体的には、縦方向に複数個設置した半導体発光素子２１０の中で、略中央部分に位置する第１ＬＥＤ群の前方の中央の棚板１１０の収納物は、第１ＬＥＤ群による照明と上下位置にある第２ＬＥＤ群の指向性の一部が被って照明される。   Specifically, in the plurality of semiconductor light emitting devices 210 installed in the vertical direction, the storage on the central shelf 110 in front of the first LED group located at the substantially central portion is the illumination by the first LED group and the vertical position. A part of the directivity of the second LED group is covered and illuminated.

また最上段の棚板１１０や最下段の棚板１１０の収納物は第１ＬＥＤ群の照明は届かず、第２ＬＥＤ群の照射によって照明される。   Further, the items stored in the uppermost shelf 110 and the lowermost shelf 110 do not reach the illumination of the first LED group, and are illuminated by the irradiation of the second LED group.

このため第１ＬＥＤ群と第２ＬＥＤ群の照度を一定にすると、上段部および下段部に位置する棚板１１０への照明は、中央部の棚板への照明よりも相対的に暗くなり、冷蔵室１０２に明暗のムラができる。   Therefore, when the illuminance of the first LED group and the second LED group is made constant, the illumination on the shelf 110 located in the upper and lower tiers becomes relatively darker than the illumination on the central shelf, and the refrigerator compartment Light and dark unevenness is formed in 102.

したがって、冷蔵室１０２内の明暗のムラを低減するために、第２ＬＥＤ群の照度が第１ＬＥＤ群の照度よりも高くなるように、電気回路内の抵抗Ｒを設定し、第１ＬＥＤ群と第２ＬＥＤ群を並列回路に接続している。   Therefore, in order to reduce the unevenness of light and darkness in the refrigerator compartment 102, the resistance R in the electric circuit is set so that the illuminance of the second LED group is higher than the illuminance of the first LED group, and the first LED group and the second LED The group is connected to a parallel circuit.

また図６の場合、上段棚板部に対応する第２ＬＥＤ群と下段棚板部に対応する第２ＬＥＤ群とも並列に接続することで、上段部と下段部に照射する第２ＬＥＤ群で照度を変更してもよい。   In the case of FIG. 6, the illuminance is changed by the second LED group that irradiates the upper stage part and the lower stage part by connecting in parallel with the second LED group corresponding to the upper stage shelf part and the second LED group corresponding to the lower stage shelf part. May be.

また、第１ＬＥＤ群は半導体発光素子２１０ｂが縦列に１個または複数個あってもよい。第２ＬＥＤ群の半導体発光素子２１０ａも第１ＬＥＤ群の上下位置にそれぞれ１個または複数個あってもよい。   Further, the first LED group may include one or more semiconductor light emitting elements 210b in a column. One or a plurality of semiconductor light emitting elements 210a of the second LED group may be provided in the upper and lower positions of the first LED group, respectively.

また、上下段の棚板１１０に対応する第２ＬＥＤ群の半導体発光素子２１０ａの設置間隔は第１ＬＥＤ群の半導体発光素子２１０ｂの設置間隔よりも狭く設置され、上下段部の棚板の照度を半導体発光素子の設置間隔を中央部よりも狭めることで、より明るく照射することができる。   Further, the installation interval of the semiconductor light emitting devices 210a of the second LED group corresponding to the upper and lower shelf plates 110 is set to be narrower than the installation interval of the semiconductor light emitting devices 210b of the first LED group, and the illuminance of the upper and lower shelf plates is reduced to the semiconductor. It is possible to irradiate brighter by narrowing the interval between the light emitting elements than the central portion.

本発明は、冷蔵庫に利用可能である。   The present invention can be used for a refrigerator.

１００ 冷蔵庫
１０２ 冷蔵室
２００ 照明ユニット
２１０ 半導体発光素子
２１０ａ 半導体発光素子（第２ＬＥＤ群）
２１０ｂ 半導体発光素子（第１ＬＥＤ群）
２２３ 基板 DESCRIPTION OF SYMBOLS 100 Refrigerator 102 Cold room 200 Illumination unit 210 Semiconductor light emitting element 210a Semiconductor light emitting element (2nd LED group)
210b Semiconductor light emitting device (first LED group)
223 substrate

Claims (2)

複数のＬＥＤが実装したＬＥＤ基板の照明ユニットを有する冷蔵庫において、前記照明ユニットの中央部近傍に位置する第１ＬＥＤ群と、前記第１ＬＥＤ群の両端に並んで配置された第２ＬＥＤ群を備え、前記第２ＬＥＤ群の照度を前記第１ＬＥＤ群の照度よりも高く設定した前記照明ユニットを備えた冷蔵庫。 In a refrigerator having an LED board lighting unit on which a plurality of LEDs are mounted, the first LED group located near the center of the lighting unit, and a second LED group arranged side by side at both ends of the first LED group, The refrigerator provided with the said illumination unit which set the illumination intensity of the 2nd LED group higher than the illumination intensity of the said 1st LED group. 貯蔵室の高さ方向に前記照明ユニットを配置し、前記貯蔵室の上下複数段の棚板の前端部よりも前方に前記照明ユニットを配置し、最上段の棚板に対応する前記第２ＬＥＤ群の照度は前記最上段の棚板と最下段の棚板の間に配置された中央の棚板に対応する前記第１ＬＥＤ群の照度よりも高くなるように設定したことを特徴とする請求項１に記載の冷蔵庫。 The lighting unit is arranged in the height direction of the storage room, the lighting unit is arranged in front of the front end portions of the upper and lower shelves of the storage room, and the second LED group corresponding to the uppermost shelf board The illuminance of is set to be higher than the illuminance of the first LED group corresponding to the central shelf disposed between the uppermost shelf and the lowermost shelf. Refrigerator.