JP2007292334A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2007292334A
JP2007292334A JP2006117612A JP2006117612A JP2007292334A JP 2007292334 A JP2007292334 A JP 2007292334A JP 2006117612 A JP2006117612 A JP 2006117612A JP 2006117612 A JP2006117612 A JP 2006117612A JP 2007292334 A JP2007292334 A JP 2007292334A
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Prior art keywords
light
led
lamp cover
refrigerator
light emitting
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JP2006117612A
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Japanese (ja)
Inventor
Kenichi Kakita
健一 柿田
Toshiaki Mamemoto
壽章 豆本
Kiyoshi Mori
貴代志 森
Junichi Suda
順一 須田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2006117612A priority Critical patent/JP2007292334A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that a part near a light source of LED gets light and uniform lighting can not be performed inside when the LED for lighting is disposed inside of the refrigerator, and visibility is degraded when a lamp cover is mounted as the cover becomes patchy. <P>SOLUTION: A plurality of LEDs 2 are mounted on a mounting base 1 and disposed in a refrigerating compartment 6 in the longitudinal direction of the refrigerating compartment 6, and the mounting base 1 is covered by the lamp cover 11 of which a face at a LED 2 side has the horizontally wavy shape, thus the light from each LED 2 can be uniformly diffused at a tip end portion of the horizontal wavy shape, the inside lighting of high visibility can be performed from a light emitting face of the lamp cover 11, and the visibility can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、低温で保存された保存物を照射する照明装置を貯蔵室内に設置した冷蔵庫に関するものである。   The present invention relates to a refrigerator in which a lighting device that irradiates a stored item stored at a low temperature is installed in a storage room.

近年、冷蔵庫の貯蔵室内照明装置として、従来の白熱灯や電球に替わり、発熱性が低い、赤外波長がでない、低電圧駆動できる等の理由で発光ダイオード（以下、Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｄｉｏｄｅを略してＬＥＤと称す）を用いるものが提案されている。   In recent years, as a storage room lighting device of a refrigerator, instead of conventional incandescent lamps and light bulbs, light emitting diodes (hereinafter referred to as Light Emitting Diodes are abbreviated as “Light Emitting Diodes” for reasons of low heat generation, no infrared wavelength, low voltage driving, etc.) Have been proposed.

従来のＬＥＤを照明装置として利用した冷蔵庫としては、複数のＬＥＤを一枚の基板に実装し、庫内天面に設置して庫内照射しているものがある（例えば、特許文献１参照）。   As a refrigerator using a conventional LED as a lighting device, there is a refrigerator in which a plurality of LEDs are mounted on a single board and installed on the top surface of the interior to irradiate the interior (see, for example, Patent Document 1). .

図６は特許文献１に記載された従来の冷蔵庫の照明装置の斜視図を示すもので、照明装置は、同図に示すように、実装基板１と、ＬＥＤ２と、断熱板４を有して構成されて、冷蔵庫の貯蔵室内に設置される。   FIG. 6 shows a perspective view of a conventional lighting device for a refrigerator described in Patent Document 1, and the lighting device has a mounting substrate 1, an LED 2, and a heat insulating plate 4, as shown in FIG. It is configured and installed in the refrigerator storage room.

実装基板１は平板状で、一面または両面に回路パターン（図示せず）が形成され、熱伝導性の良好なエポキシ樹脂系の基板や絶縁金属基板を使用する。ＬＥＤ２は砲弾状に形成され、電流を通電する２本の通電端子３が導出されている。   The mounting substrate 1 has a flat plate shape, and a circuit pattern (not shown) is formed on one surface or both surfaces, and an epoxy resin substrate or an insulating metal substrate having good thermal conductivity is used. The LED 2 is formed in a bullet shape, and two energizing terminals 3 for energizing current are led out.

断熱板４は、ウレタン等の樹脂により平板状に形成され、複数の挿通孔が並設されて、実装基板１とＬＥＤ２との間に設けられる。   The heat insulating plate 4 is formed in a flat plate shape using a resin such as urethane, and is provided between the mounting substrate 1 and the LED 2 with a plurality of insertion holes arranged in parallel.

ここで、ＬＥＤ２は、通電端子３が断熱板４の挿通孔に挿通され、実装基板１の回路パターンに半田付けされて実装され、複数個が実装基板１に並設される。尚、ＬＥＤ２の発熱量が少ない場合には、断熱板４は廃止しても構わない。   Here, the LED 2 has the current-carrying terminal 3 inserted through the insertion hole of the heat insulating plate 4 and is soldered to the circuit pattern of the mounting substrate 1 to be mounted. In addition, when the emitted-heat amount of LED2 is small, the heat insulation board 4 may be abolished.

以上のように構成されたＬＥＤを照明装置として利用した冷蔵庫について、以下その動作を説明する。   The operation | movement is demonstrated below about the refrigerator using LED comprised as mentioned above as an illuminating device.

まず、冷蔵庫の扉が閉まっている時には、ＬＥＤ２への通電は行なわず、庫内は照射されていない。扉が開けられると、機械式スイッチやホールＩＣ等の電子式スイッチで開扉状態と判断され、実装基板１に直流電圧が印加され、通電端子３を通してＬＥＤ２に順方向電流が流れて、ＬＥＤ２が発光され、庫内が照射される。
特開平１１−１５９９５３号公報 First, when the refrigerator door is closed, the LED 2 is not energized and the interior is not illuminated. When the door is opened, the electronic switch such as a mechanical switch or a Hall IC is judged to be in the open state, a DC voltage is applied to the mounting substrate 1, a forward current flows to the LED 2 through the energizing terminal 3, and the LED 2 Light is emitted and the interior is illuminated.
JP 11-159953 A

しかしながら、上記従来の構成では、ＬＥＤ２には一定の指向角度があり、このままの構成で庫内に取付けた場合、スポット的な照射は可能であるが、庫内全体を均一に照らすことはできない。また、ランプカバーを単純に付けた場合でも、ＬＥＤ２の光源付近の部分が明るくなり、ランプカバーが斑状に見えるため、視認性が劣ってしまうという課題を有していた。   However, in the above-described conventional configuration, the LED 2 has a certain directivity angle. When the LED 2 is mounted in the chamber with this configuration, spot irradiation is possible, but the entire chamber cannot be illuminated uniformly. Further, even when the lamp cover is simply attached, a portion near the light source of the LED 2 becomes bright and the lamp cover looks patchy, so that the visibility is inferior.

本発明は、上記従来の課題を解決するもので、前記ＬＥＤからの発光をランプカバーの略全面にわたって均一に発光させて視認性をあげ、庫内を均一に照射できる冷蔵庫を提供することを目的とする。   The present invention solves the above-described conventional problems, and an object thereof is to provide a refrigerator that can emit light from the LED uniformly over substantially the entire surface of a lamp cover to improve visibility and can irradiate the interior uniformly. And

上記従来の課題を解決するために、本発明の冷蔵庫は、室内の保存物を照射する複数のＬＥＤを室内の縦方向に実装した実装基板を設け、この実装基板を、前記ＬＥＤ側の面に前記ＬＥＤからの発光を分散して透過させる凹凸を設けたランプカバーで覆う構成としたものである。   In order to solve the above-described conventional problems, the refrigerator of the present invention is provided with a mounting board in which a plurality of LEDs that irradiate stored items in a room are mounted in a vertical direction in the room, and the mounting board is provided on the surface on the LED side. The LED cover is covered with a lamp cover provided with unevenness that disperses and transmits light emitted from the LED.

これによって、ＬＥＤから発光された光が、ランプカバー裏面に設けた鋸歯状の凹凸の先端を伝って拡散される。   As a result, the light emitted from the LED is diffused along the tips of serrated irregularities provided on the back surface of the lamp cover.

また、本発明の冷蔵庫は、ランプカバーをエポキシやアクリル等の透明樹脂で形成したものである。   In the refrigerator of the present invention, the lamp cover is formed of a transparent resin such as epoxy or acrylic.

これによって、ランプカバーは金型成形が可能で、自由な形状に加工されることになる。   As a result, the lamp cover can be molded and processed into a free shape.

また、本発明の冷蔵庫は、前記ＬＥＤを面実装型部品としたもので、これにより、実装基板の高さ方向の寸法が薄くできる。   In the refrigerator of the present invention, the LED is a surface-mounted component, and thereby the height dimension of the mounting substrate can be reduced.

また、本発明の冷蔵庫は、前記ＬＥＤの配置を実装基板上で、等間隔としたもので、これにより、前記ランプカバーはＬＥＤからの均一な光量で照射される。   In the refrigerator of the present invention, the LEDs are arranged at equal intervals on the mounting substrate, whereby the lamp cover is irradiated with a uniform amount of light from the LEDs.

本発明の冷蔵庫は、庫内を照射するランプカバー内に位置するＬＥＤの斑状の発光をなくすことができ、均一な発光面で庫内照射できるので視認性を向上させることができる。   The refrigerator of the present invention can eliminate the spotted light emission of the LED located in the lamp cover that irradiates the interior of the refrigerator, and can improve the visibility because it can be irradiated in the interior with a uniform light emitting surface.

また、本発明の冷蔵庫は、ＬＥＤとして面実装型部品を使用することで、実装基板の厚みが薄くでき、照明装置として壁部に埋め込むスペースを最小限にすることができる。   Moreover, the refrigerator of this invention can make the thickness of a mounting board | substrate thin by using surface mount type components as LED, and can minimize the space embedded to a wall part as an illuminating device.

請求項１に記載の発明は、断熱区画された貯蔵室の壁部に、前記貯蔵室内の保存物を照射する発光ダイオードと、前記発光ダイオードを前記貯蔵室の縦方向に複数個実装した実装基板と、前記発光ダイオードの発光部全体を覆うランプカバーを具備する照明装置を、前記貯蔵室の壁部に埋設し、さらに前記ランプカバーの裏面に、前記発光ダイオードの発光を分散して透過させる鋸歯状の凹凸を設けたものである。   According to the first aspect of the present invention, there is provided a light emitting diode that irradiates a stored part in a heat-insulated compartment, and a plurality of the light emitting diodes mounted in a vertical direction of the storage compartment. And a lighting device having a lamp cover that covers the entire light emitting portion of the light emitting diode, embedded in a wall of the storage chamber, and further sawtoothed to disperse and transmit light emitted from the light emitting diode on the back surface of the lamp cover Shaped unevenness.

かかる構成とすることにより、前記発光ダイオードの発光は、前記ランプカバー裏面に設けた凹凸の先端を伝って拡散され、斑状の発光がない均一な発光面で庫内照射ができ、視認性を高めることができる。   With this configuration, the light emitted from the light emitting diode is diffused through the tip of the unevenness provided on the back surface of the lamp cover, and can be irradiated inside the chamber with a uniform light emitting surface without spotted light emission, thereby improving visibility. be able to.

請求項２に記載の発明は、前記ランプカバーを、エポキシ、アクリル、ポリカーボネート、ポリエチレン、ポリスチレン、ポリプロピレンなどの透明樹脂のうち、一つの材料もしくは複合材料をベース材として形成したものである。   According to a second aspect of the present invention, the lamp cover is formed by using one material or a composite material as a base material among transparent resins such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, and polypropylene.

かかることにより、前記ランプカバーを自由な形状に成型加工できるので、容易な取付け設計が可能になり、庫内の最適な位置に照明装置を設置することができる。   As a result, the lamp cover can be molded into a free shape, so that an easy mounting design is possible, and the lighting device can be installed at an optimum position in the cabinet.

請求項３に記載の発明は、前記発光ダイオードを面実装型部品としたものである。   According to a third aspect of the present invention, the light emitting diode is a surface mount type component.

かかる構成とすることにより、実装基板の高さ方向の寸法が薄くなり、照明装置全体の薄型化が図れ、薄い壁厚で照明装置が埋設できるので、貯蔵室内の広い保存スペースを確保することができる。   With such a configuration, the height dimension of the mounting substrate is reduced, the entire lighting device can be thinned, and the lighting device can be embedded with a thin wall thickness, so that a large storage space in the storage chamber can be secured. it can.

請求項４に記載の発明は、前記実装基板に実装する前記発光ダイオードの配置を、等間隔としたものである。   According to a fourth aspect of the present invention, the light emitting diodes mounted on the mounting substrate are arranged at equal intervals.

かかる構成とすることにより、前記発光ダイオードの光源間の距離が一定となり、ランプカバー裏面の横波形状の先端を伝う拡散性が向上され、さらに均一な光量で庫内を照射することができる。   By adopting such a configuration, the distance between the light sources of the light emitting diodes becomes constant, the diffusibility that propagates through the tip of the transverse wave shape on the back surface of the lamp cover is improved, and the interior can be irradiated with a uniform amount of light.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、従来例と同一の構成要件については同一符号を付して、その詳細な説明は省略する。また、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same component as a prior art example, and the detailed description is abbreviate | omitted. Further, the present invention is not limited by this embodiment.

（実施の形態１）
図１は、本発明の実施の形態１における冷蔵庫の扉を除いた状態の正面図である。図２は、同実施の形態１における図１のＡ−Ａ線による冷蔵室の断面図である。図３は、同実施の形態１における照明装置の断面図を示し、図２のＢ−Ｂ線による断面図、図４は、同実施の形態１における照明装置の光の分散状態を説明する要部拡大図、図５はランプカバーの背面（裏面）からの斜視図である。 (Embodiment 1)
FIG. 1 is a front view showing a state in which a refrigerator door according to Embodiment 1 of the present invention is removed. 2 is a cross-sectional view of the refrigerating chamber taken along line AA of FIG. 1 in the first embodiment. 3 is a cross-sectional view of the lighting device according to the first embodiment, and is a cross-sectional view taken along the line BB in FIG. 2. FIG. 4 is a diagram for explaining the light dispersion state of the lighting device according to the first embodiment. FIG. 5 is a perspective view from the back surface (back surface) of the lamp cover.

図１及び図２において、断熱材で周囲と断熱して構成されている冷蔵庫本体５は、断熱壁を介して複数の区画に区分された貯蔵室を具備しており、最上部の貯蔵室を冷蔵室６とし、また、冷蔵室６の直下には断熱仕切壁よって区画された製氷室７と切替室８を横並びで配置している。また、最下段の貯蔵室を冷凍室１０とし、そして製氷室７及び切替室８と冷凍室１０との間には野菜室９が配置される構成となっている。   1 and 2, the refrigerator main body 5 configured to be insulated from the surroundings with a heat insulating material includes a storage chamber divided into a plurality of sections through a heat insulating wall, and the uppermost storage chamber is The refrigerating room 6 is provided, and an ice making room 7 and a switching room 8 partitioned by a heat insulating partition wall are arranged side by side immediately below the refrigerating room 6. Further, the lowermost storage chamber is a freezer compartment 10, and a vegetable compartment 9 is arranged between the ice making compartment 7, the switching compartment 8 and the freezer compartment 10.

冷蔵室６内には、保存物を重ならずに整理して保存できるように複数の収納棚１２が設けられ、一部は上下に可動にできるように構成されている。また、最下段には前面に専用扉１３ａを有する特定低温室１３が設けられ、消費者は選定した特定保存物を最適な温度で保存することができる。   A plurality of storage shelves 12 are provided in the refrigerator compartment 6 so that stored items can be organized and stored without overlapping, and a part of the storage shelves 12 can be moved up and down. Moreover, the specific low temperature chamber 13 which has the exclusive door 13a in the front is provided in the lowest stage, and the consumer can preserve | save the specific preservation | save thing selected at the optimal temperature.

また、冷蔵室６の室内側壁には、扉開放前面から見て左右に、それぞれ実装基板１が埋設されており、実装基板１の表面側は透明もしくは半透明樹脂製のランプカバー１１で覆われている。ランプカバー１１の冷蔵室６への取付けは、ランプカバー１１自身の持つ可撓性を利用してランプカバー１１を湾曲させ、ランプカバー１１の裏面の上下端部に設けた係止片１７を冷蔵室６の側面に設けた係止凹部１８に係止させる構成となっている。   In addition, the mounting substrate 1 is embedded in the indoor side wall of the refrigerator compartment 6 on the left and right as viewed from the front of the door, and the surface side of the mounting substrate 1 is covered with a lamp cover 11 made of a transparent or translucent resin. ing. The lamp cover 11 is attached to the refrigerator compartment 6 by using the flexibility of the lamp cover 11 itself to bend the lamp cover 11 and refrigerate the locking pieces 17 provided on the upper and lower ends of the back surface of the lamp cover 11. It is configured to be locked in a locking recess 18 provided on the side surface of the chamber 6.

次に、図３において、実装基板１、ＬＥＤ２、通電端子３および断熱板４は、従来例と同様に照明装置を構成している。本実施の形態においては、ＬＥＤ２は、冷蔵室６内において縦（上下）方向に複数個、任意の間隔（等間隔）で実装基板１に実装されている。   Next, in FIG. 3, the mounting substrate 1, the LED 2, the energizing terminal 3, and the heat insulating plate 4 constitute an illumination device as in the conventional example. In the present embodiment, a plurality of LEDs 2 are mounted on the mounting substrate 1 at arbitrary intervals (equal intervals) in the vertical (vertical) direction in the refrigerator compartment 6.

実装基板１は、冷蔵室側壁１４に形成した凹部１４ａにスペーサー１５によって保持されており、ＬＥＤ２の発光部から一定の距離をおいて、ランプカバー１１がＬＥＤ２の発光部全体を覆うように冷蔵室側壁１４の凹部１４ａに装着されている。ＬＥＤ２としては、白色光のものが最適で、具体的には色温度のケルビン値が４０００Ｋ〜７０００Ｋの範囲のものが好ましい。   The mounting substrate 1 is held by a spacer 15 in a recess 14a formed in the side wall 14 of the refrigerator compartment, and the refrigerator compartment is covered so that the lamp cover 11 covers the entire light emitting portion of the LED 2 at a certain distance from the light emitting portion of the LED 2. The side wall 14 is mounted in the recess 14a. The LED 2 is optimally white light, and specifically has a color temperature Kelvin value in the range of 4000K to 7000K.

また、ランプカバー１１の裏面、すなわちＬＥＤ２と対抗する側の面には、図５に示す如くＬＥＤ２の配置方向と直交する横方向に、断面鋸歯状の突条１６が一定の間隔で一体に施されている。したがって、ランプカバー１１の材料としては光の透過率の高い材料が好ましい。そして、突条１６の間隔は、所定数毎の突条１６の頂部がＬＥＤ２の光軸Ｘ上に略位置する関係に設定されている。   In addition, on the back surface of the lamp cover 11, that is, the surface facing the LED 2, as shown in FIG. Has been. Therefore, the material of the lamp cover 11 is preferably a material having a high light transmittance. And the space | interval of the protrusion 16 is set so that the top part of the protrusion 16 for every predetermined number may be located substantially on the optical axis X of LED2.

以上のように構成された冷蔵庫について、以下その動作、作用を図４の照明装置の主要部拡大図を用いて説明する。   About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated using the principal part enlarged view of the illuminating device of FIG. 4 below.

基本動作として、冷蔵室６内をＬＥＤ２で照明する場合には、通電端子３を通して複数のＬＥＤ２に順方向電流を流して発光させ、この光がランプカバー１１に進光して、ランプカバー１１で拡散されて冷蔵室６内が照射されることになる。   As a basic operation, when the inside of the refrigerator compartment 6 is illuminated by the LED 2, a forward current is passed through the plurality of LEDs 2 through the energization terminals 3 to emit light, and this light travels to the lamp cover 11, and the lamp cover 11 It diffuses and the inside of the refrigerator compartment 6 is irradiated.

具体的に説明すると、ＬＥＤ２ａから光量Ａの光がカバー１１の先端に相当する鋸歯頂部１１ａに進入すると、鋸歯頂部１１ａに対応するランプカバー１１の冷蔵室側の発光面は、照射量Ａで室内を照射する。この時、光量Ａは同時に鋸歯頂部１１ａで拡散され、隣接する鋸歯頂部１１ｂへは光量Ａの約０．７倍となった光が進入し、同様に鋸歯頂部１１ｂから隣合う鋸歯頂部１１ｃへは光量Ａの約０．３倍となった光が進入する。尚、この時のカバー１１の各突条２１における鋸歯頂部での光量減衰量は、ＬＥＤ２ａからの距離に比例して減衰するもので、鋸歯頂部１１ａ、１１ｂ、１１ｃの距離を変更することで任意に設定できる。   More specifically, when light of light amount A from the LED 2a enters the sawtooth crest 11a corresponding to the tip of the cover 11, the light emitting surface on the refrigerator compartment side of the lamp cover 11 corresponding to the sawtooth crest 11a Irradiate. At this time, the amount of light A is simultaneously diffused by the sawtooth crest 11a, and light that is about 0.7 times the amount of light A enters the adjacent sawtooth crest 11b. Light that is about 0.3 times the amount of light A enters. The amount of light attenuation at the top of the sawtooth of each protrusion 21 of the cover 11 at this time is attenuated in proportion to the distance from the LED 2a, and can be changed by changing the distance of the sawtooth top 11a, 11b, 11c. Can be set.

この様に、光はランプカバー１１の鋸歯頂部からランプカバー１１の発光面（冷蔵室側表面）へ進光すると同時に、前記鋸歯頂部を伝って拡散されることになる。   In this manner, the light travels from the top of the sawtooth of the lamp cover 11 to the light emitting surface (refrigeration chamber side surface) of the lamp cover 11 and is simultaneously diffused through the top of the sawtooth.

次に、次段のＬＥＤ２ｂについても同様に、光量Ｂの光が鋸歯頂部１１ｄに進入し、この鋸歯頂部１１ｄに対応するランプカバー１１の冷蔵室側の発光面は、照射量Ｂで室内を照射する。この時、光量Ｂは同時に鋸歯頂部１１ｄで拡散され、隣接する鋸歯頂部１１ｃ及び１１ｅへ光量Ｂの約０．７倍となった光が進入し、同様に鋸歯頂部先端１１ｃから隣合う鋸歯頂部１１ｂ、鋸歯頂部１１ｅから隣合う鋸歯頂部１１ｆへそれぞれ光量Ｂの約０．３倍となった光が進入する。   Next, similarly for the LED 2b at the next stage, the light of the light quantity B enters the sawtooth crest 11d, and the light emitting surface on the refrigerator compartment side of the lamp cover 11 corresponding to the sawtooth crest 11d irradiates the room with the irradiation amount B. To do. At this time, the light quantity B is simultaneously diffused at the sawtooth crest 11d, and light that is about 0.7 times the light quantity B enters the adjacent sawtooth crests 11c and 11e. Then, light that has become approximately 0.3 times the amount of light B enters the adjacent sawtooth crest 11f from the sawtooth crest 11e.

ここで、ＬＥＤ２ａ、２ｂの光軸から離れた鋸歯頂部１１ｂに対応するランプカバー１１の冷蔵室側の発光面をみると、ＬＥＤ２ａからの拡散光量０．７Ａと、ＬＥＤ２ｂからの拡散光量０．３Ｂを合わせた値すなわち〔０．７Ａ＋０．３Ｂ〕の照射量で室内は照射される。   Here, when the light emitting surface on the refrigerator compartment side of the lamp cover 11 corresponding to the sawtooth crest 11b away from the optical axis of the LEDs 2a and 2b is seen, the diffused light quantity 0.7A from the LED 2a and the diffused light quantity 0.3B from the LED 2b. The room is irradiated with a combined value, that is, a dose of [0.7 A + 0.3 B].

以下、ＬＥＤ２ｃについても同様に、各鋸歯頂部１１ｃ、１１ｄ、１１ｅ、１１ｆ、１１ｇ、１１ｈに対応するランプカバー１１の冷蔵室側における発光面の照射量を算出すると、鋸歯頂部１１ｃでは〔０．３Ａ＋０．７Ｂ〕の照射量で、鋸歯頂部１１ｄでは〔Ｂ〕の照射量で、鋸歯頂部１１ｅでは〔０．７Ｂ＋０．３Ｃ〕の照射量で、鋸歯頂部１１ｆでは〔０．３Ｂ＋０．７Ｃ〕の照射量で、鋸歯頂部１１ｇでは〔Ｃ〕の照射量で、鋸歯頂部１１ｈでは〔０．７Ｃ＋０．３Ｄ〕の照射量で冷蔵室側を照射することとなる。   Hereinafter, similarly for the LED 2c, when the irradiation amount of the light emitting surface on the refrigerator compartment side of the lamp cover 11 corresponding to each of the sawtooth crests 11c, 11d, 11e, 11f, 11g, and 11h is calculated, the sawtooth crest 11c [0.3A + 0 .7B], the sawtooth crest 11d has a dose [B], the sawtooth crest 11e has a dose [0.7B + 0.3C], and the sawtooth crest 11f has a dose [0.3B + 0.7C]. The sawtooth top portion 11g irradiates the refrigerating chamber side with an irradiation amount of [C] and the sawtooth top portion 11h with an irradiation amount of [0.7C + 0.3D].

この時、各ＬＥＤ２ａ、２ｂ、２ｃに同じ順電流を流して、光量Ａ＝光量Ｂ＝光量Ｃとすることにより、各カバー先端１１ａ、１１ｂ、１１ｃ、１１ｄ、１１ｅ、１１ｆ、１１ｇ、１１ｈに対応するランプカバー１１の冷蔵室６側における発光面の照射量は同値となり、略均一な面発光で冷蔵室６内は照射される。   At this time, by applying the same forward current to each LED 2a, 2b, 2c and setting light quantity A = light quantity B = light quantity C, it corresponds to each cover tip 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h. The amount of irradiation of the light emitting surface on the refrigerator compartment 6 side of the lamp cover 11 is the same value, and the inside of the refrigerator compartment 6 is irradiated with substantially uniform surface emission.

以上のように、本実施の形態１においては、室内の保存物を照射するＬＥＤ２と、ＬＥＤ２を冷蔵室６の縦方向に複数個実装した実装基板１を、ランプカバー１１にて覆う構成において、ランプカバー１１におけるＬＥＤ２側の面を、冷蔵室の奥行方向に延びる断面鋸歯状の突条１６を所定間隔毎に複数設けた構成とし、ＬＥＤ２の発光がランプカバー１１を通過するようにしたもので、ランプカバー１１裏面の各鋸歯頂部１１ａ、１１ｂ、１１ｃ、１１ｄ、１１ｅ、１１ｆ、１１ｇ、１１ｈを伝って光は拡散され、斑状の発光がない均一な発光面で庫内照射ができ、その結果、冷蔵室６内の視認性を高めることができる。   As described above, in the first embodiment, in the configuration in which the lamp cover 11 covers the LED 2 that irradiates the stored matter in the room and the mounting substrate 1 in which a plurality of LEDs 2 are mounted in the vertical direction of the refrigerator compartment 6. The surface on the LED 2 side of the lamp cover 11 has a configuration in which a plurality of sawtooth-shaped protrusions 16 extending in the depth direction of the refrigerator compartment are provided at predetermined intervals so that light emission of the LED 2 passes through the lamp cover 11. , The light is diffused through each of the sawtooth crests 11a, 11b, 11c, 11d, 11e, 11f, 11g, and 11h on the back surface of the lamp cover 11, and can be irradiated in the chamber with a uniform light emitting surface without spotted light emission. The visibility in the refrigerator compartment 6 can be improved.

また、本実施の形態１におけるランプカバー１１を、エポキシ、アクリル、ポリカーボネート、ポリエチレン、ポリスチレン、ポリプロピレン等の透明樹脂のうち、いずれか一つの材料もしくはいずれかの複合材料をベース材として形成することにより、ランプカバー１１を自由な形状に成型加工できるので、容易な取付け設計が可能になり、庫内の最適な任意の位置に照明装置が設置できる。   In addition, the lamp cover 11 according to the first embodiment is formed using any one material or any composite material as a base material among transparent resins such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, and polypropylene. Since the lamp cover 11 can be molded into a free shape, an easy mounting design is possible, and the lighting device can be installed at an optimum arbitrary position in the cabinet.

また、本実施の形態１のＬＥＤ２を面実装型部品としたことにより、ＬＥＤ２の全高が低背化され、通電端子３も実装基板１上に配線パターンで形成されるので、実装基板１の高さ（厚さ）方向の寸法が薄くなり、照明装置全体の薄型化が図れ、薄い壁厚で照明装置が埋設でき、冷蔵室６内に広い保存スペースを確保することができる。   In addition, since the LED 2 of the first embodiment is a surface-mount component, the overall height of the LED 2 is reduced, and the current-carrying terminals 3 are also formed on the mounting substrate 1 with a wiring pattern. The dimension in the thickness (thickness) direction is reduced, the entire lighting device can be thinned, the lighting device can be embedded with a thin wall thickness, and a large storage space can be secured in the refrigerator compartment 6.

また、本実施の形態１の実装基板１に実装するＬＥＤ２の配置を等間隔としたことにより、各ＬＥＤ２の光源間隔の距離が一定となるので、各突条１６の鋸歯頂部１１ａ〜１１ｈで均一な光量の拡散ができ、視認性を向上させて冷蔵室６内を高品位に照射することができる。   In addition, by arranging the LEDs 2 mounted on the mounting substrate 1 of the first embodiment at equal intervals, the distance between the light sources of the LEDs 2 is constant, so that the sawtooth peaks 11a to 11h of the protrusions 16 are uniform. Thus, the amount of light can be diffused and the visibility can be improved and the inside of the refrigerator compartment 6 can be irradiated with high quality.

以上のように、本発明にかかる冷蔵庫は、家庭用又は業務用冷蔵庫にＬＥＤの照明を適用する場合に実施することはもちろん、扉のある物品貯蔵装置等の如くＬＥＤ照明を適用する幅広い設備機器に応用できるものである。   As described above, the refrigerator according to the present invention is not only implemented when applying LED lighting to a household or commercial refrigerator, but also a wide range of equipment that applies LED lighting such as an article storage device with a door. It can be applied to.

本発明の実施の形態１における冷蔵庫の扉を除いた状態の正面図The front view of the state which removed the door of the refrigerator in Embodiment 1 of this invention 図１のＡ−Ａ線による冷蔵室の断面図Sectional drawing of the refrigerator compartment by the AA line of FIG. 図２のＢ−Ｂ線による照明装置部の断面図Sectional drawing of the illuminating device part by the BB line of FIG. 同実施の形態における冷蔵庫の光の分散状態を説明する要部拡大図The principal part enlarged view explaining the dispersion | distribution state of the light of the refrigerator in the embodiment 同実施の形態におけるランプカバーの背面（裏面）からの斜視図The perspective view from the back (back surface) of the lamp cover in the embodiment 従来の冷蔵庫の照明装置の斜視図A perspective view of a conventional refrigerator lighting device

符号の説明Explanation of symbols

１ 実装基板
２ ＬＥＤ
３ 通電端子
４ 断熱板
５ 冷蔵庫本体
６ 冷蔵室
７ 製氷室
８ 切替室
９ 野菜室
１０ 冷凍室
１１ ランプカバー
１１ａ 鋸歯頂部
１１ｂ 鋸歯頂部
１１ｃ 鋸歯頂部
１１ｄ 鋸歯頂部
１１ｅ 鋸歯頂部
１１ｄ 鋸歯頂部
１１ｆ 鋸歯頂部
１１ｇ 鋸歯頂部
１１ｈ 鋸歯頂部
１２ 収納棚
１３ 特定低温室
１４ 冷蔵室側壁
１５ スペーサー
１６ 突条
１７ 係止片 1 Mounting board 2 LED
DESCRIPTION OF SYMBOLS 3 Current supply terminal 4 Heat insulation board 5 Refrigerator main body 6 Refrigeration room 7 Ice making room 8 Switching room 9 Vegetable room 10 Freezing room 11 Lamp cover 11a Saw tooth top part 11b Saw tooth top part 11c Saw tooth top part 11d Saw tooth top part 11e Saw tooth top part 11f Saw tooth top part 11f Saw tooth top part 11f Top part 11h Sawtooth top part 12 Storage shelf 13 Specific cold room 14 Cold room side wall 15 Spacer 16 Projection 17 Locking piece

Claims (4)

断熱区画された貯蔵室の壁部に、前記貯蔵室内の保存物を照射する発光ダイオードと、前記発光ダイオードを前記貯蔵室の縦方向に複数個実装した実装基板と、前記発光ダイオードの発光部全体を覆うランプカバーを具備する照明装置を、前記貯蔵室の壁部に埋設し、さらに前記ランプカバーの裏面に、前記発光ダイオードの発光を分散して透過させる鋸歯状の凹凸を設けた冷蔵庫。   A light-emitting diode that irradiates a storage chamber wall portion that is insulated and irradiates a stored item in the storage chamber, a mounting substrate in which a plurality of the light-emitting diodes are mounted in the vertical direction of the storage chamber, and the entire light-emitting portion of the light-emitting diode A refrigerator in which a lighting device including a lamp cover is embedded in a wall portion of the storage chamber, and further, sawtooth-shaped irregularities that disperse and transmit light emitted from the light emitting diodes are provided on the back surface of the lamp cover. 前記ランプカバーを、エポキシ、アクリル、ポリカーボネート、ポリエチレン、ポリスチレン、ポリプロピレン等の透明樹脂のうち、一つの材料もしくは複合材料をベース材として形成した請求項１に記載の冷蔵庫。   The refrigerator according to claim 1, wherein the lamp cover is formed using one material or a composite material of a transparent resin such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, and polypropylene as a base material. 前記発光ダイオードを、面実装型部品とした請求項１または請求項２に記載の冷蔵庫。   The refrigerator according to claim 1 or 2, wherein the light-emitting diode is a surface-mounted component. 前記実装基板に実装する前記発光ダイオードの配置を等間隔とした請求項１から請求項３のいずれか一項に記載の冷蔵庫。   The refrigerator according to any one of claims 1 to 3, wherein the light emitting diodes mounted on the mounting substrate are arranged at equal intervals.
JP2006117612A 2006-04-21 2006-04-21 Refrigerator Pending JP2007292334A (en)

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