JP4971389B2 - refrigerator - Google Patents

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JP4971389B2
JP4971389B2 JP2009141940A JP2009141940A JP4971389B2 JP 4971389 B2 JP4971389 B2 JP 4971389B2 JP 2009141940 A JP2009141940 A JP 2009141940A JP 2009141940 A JP2009141940 A JP 2009141940A JP 4971389 B2 JP4971389 B2 JP 4971389B2
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guide plate
light guide
led
light
storage chamber
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JP2010286209A (en
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守幸 坂井
浩二 虎谷
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Sharp Corp
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Sharp Corp
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Priority to JP2009141940A priority Critical patent/JP4971389B2/en
Priority to RU2012101272/13A priority patent/RU2488757C1/en
Priority to EP10789409.9A priority patent/EP2444764B1/en
Priority to PCT/JP2010/059741 priority patent/WO2010147034A1/en
Priority to CN201080026442.3A priority patent/CN102803879B/en
Priority to ES10789409.9T priority patent/ES2691272T3/en
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Description

本発明は、ＬＥＤにより貯蔵室内を照明する冷蔵庫に関する。   The present invention relates to a refrigerator that illuminates a storage room with LEDs.

従来の冷蔵庫は特許文献１、２に開示されている。この冷蔵庫は貯蔵物を収納する貯蔵室内を照明する複数のＬＥＤを有している。ＬＥＤは上下に並んで貯蔵室の両側壁の前部に配される。   Conventional refrigerators are disclosed in Patent Documents 1 and 2. This refrigerator has a plurality of LEDs for illuminating a storage room for storing stored items. The LEDs are arranged in front of both side walls of the storage room side by side.

図７は貯蔵室の側壁の前部を示す上面断面図である。貯蔵室２の側壁８には断熱材が充填され、貯蔵室２に面して上下に延びる照明室４が凹設される。照明室４の壁面は側壁８と一体の樹脂成形品から成る枠部５により形成される。枠部５にはＬＥＤ３を実装した実装基板７が取り付けられる。照明室４の正面には透明樹脂から成るランプカバー６が配される。ランプカバー６は爪部６ａが枠部５に設けた孔部５ａに係合して係止される。   FIG. 7 is a top sectional view showing the front part of the side wall of the storage chamber. The side wall 8 of the storage chamber 2 is filled with a heat insulating material, and the illumination chamber 4 extending up and down facing the storage chamber 2 is recessed. The wall surface of the illumination chamber 4 is formed by a frame portion 5 made of a resin molded product integrated with the side wall 8. A mounting substrate 7 on which the LEDs 3 are mounted is attached to the frame portion 5. A lamp cover 6 made of a transparent resin is disposed in front of the illumination chamber 4. The lamp cover 6 is locked by engaging the claw portion 6 a with the hole portion 5 a provided in the frame portion 5.

貯蔵室２の扉を開くとＬＥＤ３に通電され、ＬＥＤ３から出射された出射光がランプカバー６を透過する。これにより、貯蔵室２内が前部から照明される。   When the door of the storage chamber 2 is opened, the LED 3 is energized, and the emitted light emitted from the LED 3 passes through the lamp cover 6. Thereby, the inside of the storage chamber 2 is illuminated from the front.

特開２００７−１８７３６３号公報（第３頁−第６頁、第２図）Japanese Unexamined Patent Publication No. 2007-187363 (page 3 to page 6, FIG. 2) 特開２００８−８９２７７号公報（第４頁−第６頁、第２図）JP 2008-89277 A (pages 4 to 6, FIG. 2)

しかしながら、上記従来の冷蔵庫によると、ＬＥＤ３の出射光が貯蔵室２の前部から出射されるため、前方から照明される貯蔵物の影が該貯蔵物の後方に形成される。このため、後部に配される貯蔵物の視認性が悪い問題があった。   However, according to the conventional refrigerator, since the emitted light of the LED 3 is emitted from the front part of the storage chamber 2, a shadow of the stored item illuminated from the front is formed behind the stored item. For this reason, there existed a problem that the visibility of the stored thing distribute | arranged to a rear part was bad.

本発明は、貯蔵物の視認性を向上できる冷蔵庫を提供することを目的とする。   An object of this invention is to provide the refrigerator which can improve the visibility of stored goods.

上記目的を達成するために本発明は、貯蔵物を収納する貯蔵室と、前記貯蔵室の両側壁の前部に配されるとともに上下に並ぶ複数のＬＥＤと、前記貯蔵室の両側壁に沿って配されるとともに前記ＬＥＤの出射光を前記貯蔵室の後部に導光する導光板とを備え、前記導光板を導光して前記導光板から出射される光によって前記貯蔵室内を照明したことを特徴としている。   In order to achieve the above object, the present invention provides a storage chamber for storing a stored item, a plurality of LEDs arranged in front of both side walls of the storage chamber and arranged vertically, and along both side walls of the storage chamber. And a light guide plate that guides the emitted light of the LED to the rear part of the storage chamber, and illuminates the storage chamber with the light guided through the light guide plate and emitted from the light guide plate. It is characterized by.

この構成によると、貯蔵室の前部に配されるＬＥＤの出射光は貯蔵室の側壁に沿って配される導光板に入射する。導光板に入射した光は導光板の表面で反射して貯蔵室の後部に導光される。導光板を導光して臨界角よりも小さい入射角で導光板の表面に到達した光は導光板から貯蔵室内や貯蔵室の側壁に向かって出射される。貯蔵室の側壁の方向に出射された光は該側壁で反射して導光板を介して貯蔵室内に出射される。   According to this structure, the emitted light of the LED arranged at the front part of the storage room enters the light guide plate arranged along the side wall of the storage room. The light incident on the light guide plate is reflected by the surface of the light guide plate and guided to the rear of the storage chamber. Light that is guided through the light guide plate and reaches the surface of the light guide plate at an incident angle smaller than the critical angle is emitted from the light guide plate toward the storage chamber or the side wall of the storage chamber. The light emitted in the direction of the side wall of the storage room is reflected by the side wall and is emitted into the storage room through the light guide plate.

また本発明は、上記構成の冷蔵庫において、前記導光板は前記側壁に面して前後に延びる凹凸部を有することを特徴としている。この構成によると、導光板は前後に延びて鉛直断面が例えばのこぎり歯状の凹凸部が貯蔵室の側壁に面して形成され、凹凸部の表面から出射した光は側壁で反射して貯蔵室内を照明する。   Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, the light guide plate has a concavo-convex portion extending forward and backward facing the side wall. According to this configuration, the light guide plate extends back and forth, and the vertical cross section is formed with, for example, a sawtooth-shaped uneven portion facing the side wall of the storage chamber, and light emitted from the surface of the uneven portion is reflected by the side wall and reflected in the storage chamber. Illuminate.

また本発明は、上記構成の冷蔵庫において、前記導光板の前面に面して前記ＬＥＤを配置したことを特徴としている。この構成によると、ＬＥＤから後方に向かって出射された光が導光板に前面から入射する。   Moreover, the present invention is characterized in that, in the refrigerator configured as described above, the LEDs are arranged facing the front surface of the light guide plate. According to this configuration, light emitted backward from the LED enters the light guide plate from the front surface.

また本発明は、上記構成の冷蔵庫において、前記導光板は前記貯蔵室側の前部に後方が前記貯蔵室側に向かって傾斜する傾斜面を有し、前記ＬＥＤが前記導光板の前記側壁側に面して前記傾斜面に対向配置されることを特徴としている。この構成によると、ＬＥＤから貯蔵室内に向かって左右方向に出射された光は導光板に側方から入射する。導光板に入射した光は傾斜面で反射して後方に導かれる。   Moreover, this invention is a refrigerator of the said structure, The said light guide plate has the inclined surface which back inclines toward the said storage chamber side in the front part by the side of the said storage chamber, The said LED is the said side wall side of the said light guide plate. And facing the inclined surface. According to this structure, the light emitted in the left-right direction from the LED toward the storage chamber enters the light guide plate from the side. Light incident on the light guide plate is reflected by the inclined surface and guided backward.

また本発明は、上記構成の冷蔵庫において、前記ＬＥＤと前記導光板との間に前記ＬＥＤを覆う透明なランプカバーを設け、前記ランプカバーは前記ＬＥＤよりも前方に前記ＬＥＤの視認性を低下させる処理が施されることを特徴としている。この構成によると、ＬＥＤの出射光は透明なランプカバーを透過して導光板に入射する。ランプカバーのＬＥＤよりも前方にはシルク印刷や非光沢面処理等によってＬＥＤの視認性を低下させる処理が施される。これにより、ＬＥＤの配線等の視認を妨げて貯蔵室内の美感が向上される。   Moreover, this invention provides the transparent lamp cover which covers the said LED between the said LED and the said light-guide plate in the refrigerator of the said structure, and the said lamp cover reduces the visibility of the said LED ahead of the said LED. It is characterized by being processed. According to this configuration, the light emitted from the LED passes through the transparent lamp cover and enters the light guide plate. In front of the LED of the lamp cover, processing for reducing the visibility of the LED is performed by silk printing, non-glossy surface processing, or the like. Thereby, visual recognition of LED wiring etc. is prevented and the aesthetics in a storage chamber are improved.

また本発明は、上記構成の冷蔵庫において、前記ＬＥＤと前記導光板との間に前記ＬＥＤを覆う非透明なランプカバーを設け、前記ＬＥＤが挿通される孔部を前記ランプカバーに形成したことを特徴としている。この構成によると、ＬＥＤはランプカバーの孔部に挿通され、ＬＥＤの出射光は直接導光板に入射する。ランプカバーは非透明に形成され、ＬＥＤの配線等の視認を妨げて貯蔵室内の美感が向上される。   In the refrigerator configured as described above, a non-transparent lamp cover that covers the LED is provided between the LED and the light guide plate, and a hole portion through which the LED is inserted is formed in the lamp cover. It is a feature. According to this configuration, the LED is inserted into the hole of the lamp cover, and the emitted light of the LED is directly incident on the light guide plate. The lamp cover is formed to be non-transparent and prevents the visual recognition of the LED wiring and the like, thereby improving the aesthetics of the storage chamber.

また本発明は、上記構成の冷蔵庫において、前記導光板がポリスチレン樹脂から成ることを特徴としている。   According to the present invention, in the refrigerator configured as described above, the light guide plate is made of polystyrene resin.

本発明によると、ＬＥＤの出射光を貯蔵室の後部に導光する導光板を貯蔵室の両側壁に沿って配したので、貯蔵室の前部及び後部に配される貯蔵物を側方から照明することができる。また、貯蔵室の前部及び後部に配される貯蔵物を前後から照明することができる。従って、貯蔵物の影による後方の貯蔵物の視認性低下を防止し、貯蔵物の視認性を向上することができる。   According to the present invention, since the light guide plates for guiding the emitted light of the LED to the rear part of the storage room are arranged along the both side walls of the storage room, the storage items arranged at the front part and the rear part of the storage room are laterally arranged. Can be illuminated. Moreover, the storage thing distribute | arranged to the front part and rear part of a store room can be illuminated from front and back. Accordingly, it is possible to prevent the visibility of the stored item behind from being deteriorated due to the shadow of the stored item, and to improve the visibility of the stored item.

本発明の第１実施形態の冷蔵庫を示す斜視図The perspective view which shows the refrigerator of 1st Embodiment of this invention. 図１のＡ矢視図1 arrow view of FIG. 図２のＢ−Ｂ断面図BB sectional view of FIG. 本発明の第１実施形態の冷蔵庫の導光板を示す斜視図The perspective view which shows the light-guide plate of the refrigerator of 1st Embodiment of this invention. 本発明の第１実施形態の冷蔵庫の他の導光板を示す斜視図The perspective view which shows the other light-guide plate of the refrigerator of 1st Embodiment of this invention. 本発明の第２実施形態の冷蔵庫の貯蔵室の側壁を示す上面断面図Top sectional drawing which shows the side wall of the storage chamber of the refrigerator of 2nd Embodiment of this invention 従来の冷蔵庫の貯蔵室の側壁を示す上面断面図Top sectional view showing a side wall of a storage room of a conventional refrigerator

以下に本発明の実施形態を図面を参照して説明する。説明の便宜上、前述の図７に示す従来例と同一の部分は同一の符号を付している。図１は第１実施形態の冷蔵庫を示す斜視図であり、図２は図１のＡ矢視図である。冷蔵庫１は断熱材を充填した断熱箱体１ａにより貯蔵室２が区画される。   Embodiments of the present invention will be described below with reference to the drawings. For convenience of explanation, the same parts as those of the conventional example shown in FIG. FIG. 1 is a perspective view showing the refrigerator according to the first embodiment, and FIG. 2 is a view taken in the direction of arrow A in FIG. The refrigerator 1 has a storage chamber 2 defined by a heat insulating box 1a filled with a heat insulating material.

貯蔵室２の左右の側壁８の前部にはＬＥＤ３（図３参照）が配される照明室４が上下に延びて設けられる。貯蔵室２内には左右の側壁８に沿って透明樹脂から成る平板状の導光板２０が配される。両側壁８間には貯蔵物を載置する載置トレイ９が配される。載置トレイ９は貯蔵室２の両側壁８に突設される支持部１１上に橋架され、導光板２０には支持部１１が貫通する開口部２２が形成されている。   In the front part of the left and right side walls 8 of the storage room 2, an illumination room 4 in which the LEDs 3 (see FIG. 3) are arranged extends vertically. A flat light guide plate 20 made of a transparent resin is disposed in the storage chamber 2 along the left and right side walls 8. Between the side walls 8, a placing tray 9 for placing a stored item is disposed. The loading tray 9 is bridged on support portions 11 protruding from both side walls 8 of the storage chamber 2, and an opening 22 through which the support portion 11 passes is formed in the light guide plate 20.

貯蔵室２の背面には冷気が流通する冷気通路１２が形成される。冷気通路１２を流通する冷気は吐出口（不図示）を介して貯蔵室２内に吐出される。冷気通路１２の前面は金属パネル１３で覆われ、冷気通路１２を流通する冷気の冷熱が金属パネル１３を介して貯蔵室２に放出される。これにより、貯蔵室２内を均一に冷却することができる。   A cool air passage 12 through which cool air flows is formed on the back surface of the storage chamber 2. The cold air flowing through the cold air passage 12 is discharged into the storage chamber 2 through a discharge port (not shown). The front surface of the cold air passage 12 is covered with a metal panel 13, and the cold heat of the cold air flowing through the cold air passage 12 is released to the storage chamber 2 through the metal panel 13. Thereby, the inside of the storage chamber 2 can be cooled uniformly.

図３は図２のＢ−Ｂ断面図を示している。また、図４は導光板２０の斜視図を示している。照明室４は貯蔵室２の両側壁８に凹設され、照明室４の壁面は側壁８と一体の樹脂成形品から成る枠部５により形成される。照明室４の正面には透明樹脂から成るランプカバー６が配される。ランプカバー６は爪部６ａが枠部５に設けた孔部５ａに係合して係止される。   FIG. 3 is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a perspective view of the light guide plate 20. The lighting chamber 4 is recessed on both side walls 8 of the storage chamber 2, and the wall surface of the lighting chamber 4 is formed by a frame portion 5 made of a resin molded product integrated with the side wall 8. A lamp cover 6 made of a transparent resin is disposed in front of the illumination chamber 4. The lamp cover 6 is locked by engaging the claw portion 6 a with the hole portion 5 a provided in the frame portion 5.

ランプカバー６の前部には貯蔵室２内に突出する平面断面がコ字状の突出部６ｂが形成される。突出部６ｂの内部にはチップ状の複数のＬＥＤ３を上下方向に並んで実装した実装基板７が取り付けられる。ＬＥＤ３は導光板８の前面２０ｃに対向して出射面３ａを後方に向けて配置される。   At the front part of the lamp cover 6, a protruding part 6b having a U-shaped planar cross section protruding into the storage chamber 2 is formed. A mounting substrate 7 on which a plurality of chip-shaped LEDs 3 are mounted in the vertical direction is attached to the inside of the protruding portion 6b. The LED 3 is disposed facing the front surface 20c of the light guide plate 8 with the emission surface 3a facing rearward.

また、ランプカバー６は透明樹脂から成るため、ＬＥＤ３よりも前方に不透明なシルク印刷が施される。これにより、実装基板７等の照明室４の内部の視認を防止することができる。シルク印刷に替えてサンドブラストやシボ加工等によってランプカバー６に非光沢面処理を施してもよい。即ち、ＬＥＤ３の視認性を低下させる処理がランプカバー６に施されていればよい。   Further, since the lamp cover 6 is made of a transparent resin, opaque silk printing is applied in front of the LED 3. Thereby, the visual recognition of the inside of the illumination chamber 4 such as the mounting substrate 7 can be prevented. Instead of silk printing, the lamp cover 6 may be subjected to a non-glossy surface treatment by sandblasting or embossing. That is, it is only necessary that the lamp cover 6 be subjected to a process for reducing the visibility of the LED 3.

導光板２０はポリスチレン樹脂等から成り、貯蔵室２内に面した第１側面２０ａと側壁８に面した第２側面２０ｂとが対向する。また、導光板２０の第２側面２０ｂには前後方向に延びた鉛直断面がのこぎり歯状の凹凸部２１が形成される。凹凸部２１の形状は例えば、頂角が９０゜、ピッチが０．１５ｍｍになっている。凹凸部２１と側壁８との間には空気層が形成されている。空気層の屈折率が約１．０であり、導光板２０の材料がポリスチレンの場合は屈折率が１．５９〜１．６０であるため、全反射の臨界角は約４３°になっている。   The light guide plate 20 is made of polystyrene resin or the like, and the first side surface 20a facing the storage chamber 2 and the second side surface 20b facing the side wall 8 face each other. In addition, the second side surface 20b of the light guide plate 20 is formed with an uneven portion 21 having a sawtooth-like vertical section extending in the front-rear direction. As for the shape of the concavo-convex portion 21, for example, the apex angle is 90 ° and the pitch is 0.15 mm. An air layer is formed between the uneven portion 21 and the side wall 8. When the refractive index of the air layer is about 1.0 and the light guide plate 20 is made of polystyrene, the refractive index is 1.59 to 1.60, so the critical angle for total reflection is about 43 °. .

貯蔵室２の扉を開くとＬＥＤ３に通電され、ＬＥＤ３から出射された出射光がランプカバー６を透過して導光板２０に前面２０ｃから入射する。導光板２０に入射した光は第１、第２側面２０ａ、２０ｂで反射して導光板２０内を導光する。そして、第１側面２０ａまたは第２側面２０ｂに臨界角よりも小さい角度で入射した光は導光板２０の表面から出射される。 When the door of the storage chamber 2 is opened, the LED 3 is energized, and the emitted light emitted from the LED 3 passes through the lamp cover 6 and enters the light guide plate 20 from the front surface 20c. The light incident on the light guide plate 20 is reflected by the first and second side surfaces 20 a and 20 b to guide the light guide plate 20. Then, the light incident on the first side surface 20 a or the second side surface 20 b at an angle smaller than the critical angle is emitted from the surface of the light guide plate 20.

第２側面２０ｂから出射された光は導光板２０に対向する側壁８の表面により形成される反射面８ａで反射し、導光板２０に再度入射して第１側面２０ａから出射される。これにより、貯蔵室２の前部から後部にわたって導光板２０全体から照明される。尚、側壁８の反射面８ａを白色にすると貯蔵室２側に反射し易くなる。また、導光板２０の第２側面２０ｂまたは側壁８の反射面８ａに金属製の反射膜や反射シート等の反射部材を設けると、光強度の減衰を抑制することができるためより望ましい。   The light emitted from the second side surface 20b is reflected by the reflecting surface 8a formed by the surface of the side wall 8 facing the light guide plate 20, enters the light guide plate 20 again, and is emitted from the first side surface 20a. Thus, the entire light guide plate 20 is illuminated from the front to the rear of the storage chamber 2. In addition, when the reflective surface 8a of the side wall 8 is made white, it will become easy to reflect in the storage chamber 2 side. In addition, it is more desirable to provide a reflection member such as a metal reflection film or a reflection sheet on the second side surface 20b of the light guide plate 20 or the reflection surface 8a of the side wall 8 because attenuation of light intensity can be suppressed.

また、導光板２０を導光する光は導光板２０の上面２０ｄ、下面２０ｅ、背面２０ｆからも出射される。これにより、導光板２０よりも上方、下方及び後方を照明することができる。また、背面２０ｆから出射される光は金属パネル１３で反射し、貯蔵室２内を背面からも照明することができる。導光板２０よりも上方に貯蔵物が配置されない場合は、上面２０ｄに反射膜や反射テープ等の反射部材を設けてもよい。   Further, the light guided through the light guide plate 20 is also emitted from the upper surface 20d, the lower surface 20e, and the back surface 20f of the light guide plate 20. Thereby, it is possible to illuminate the upper side, the lower side, and the rear side of the light guide plate 20. Further, the light emitted from the back surface 20f is reflected by the metal panel 13, and the interior of the storage chamber 2 can be illuminated from the back surface. When the stored item is not disposed above the light guide plate 20, a reflective member such as a reflective film or a reflective tape may be provided on the upper surface 20d.

本実施形態によると、ＬＥＤ３の出射光を貯蔵室２の後部に導光する導光板２０を貯蔵室の両側壁８に沿って配したので、貯蔵室２の前部及び後部に配される貯蔵物を側方から照明することができる。また、貯蔵室２の前部及び後部に配される貯蔵物を前後から照明することができる。従って、貯蔵物の影による後方の貯蔵物の視認性低下を防止し、貯蔵物の視認性を向上することができる。   According to this embodiment, since the light guide plate 20 that guides the emitted light of the LED 3 to the rear part of the storage room 2 is arranged along the both side walls 8 of the storage room, the storages arranged at the front part and the rear part of the storage room 2. Objects can be illuminated from the side. Moreover, the storage thing distribute | arranged to the front part and the rear part of the store room 2 can be illuminated from back and front. Accordingly, it is possible to prevent the visibility of the stored item behind from being deteriorated due to the shadow of the stored item, and to improve the visibility of the stored item.

また、導光板２０が側壁８に面して前後に延びる凹凸部２１を第２側面２０ｂに有している。導光板２０の導光は凹凸部２１での反射によって第２側面２０ｂを平面に形成した場合に比して進行方向が多様な方向に分散される。これにより、導光板２０の表面に到達する光の入射角が臨界角よりも小さくなり易いため、導光板２０の背面２０ｆまで導光する光が減少して側方に出射される光が多くなる。従って、貯蔵室２内を前部から後部にわたってより確実に照明して貯蔵物の視認性をより向上することができる。   In addition, the light guide plate 20 has a concavo-convex portion 21 extending in the front-rear direction facing the side wall 8 on the second side surface 20 b. The light guide of the light guide plate 20 is dispersed in various directions compared to the case where the second side surface 20b is formed as a flat surface by reflection at the concavo-convex portion 21. As a result, the incident angle of light reaching the surface of the light guide plate 20 is likely to be smaller than the critical angle, so that the light guided to the back surface 20f of the light guide plate 20 is reduced and more light is emitted to the side. . Therefore, it is possible to more reliably illuminate the interior of the storage chamber 2 from the front portion to the rear portion, thereby further improving the visibility of the stored items.

また、図５に示すように、サンドブラストやシボ加工等によって凹凸部２１の表面に梨地模様等の非光沢面処理Ｋを施すとより望ましい。これにより、凹凸部２１の反射光をより分散させることができる。   In addition, as shown in FIG. 5, it is more desirable to perform a non-glossy surface treatment K such as a satin pattern on the surface of the concavo-convex portion 21 by sandblasting or embossing. Thereby, the reflected light of the uneven | corrugated | grooved part 21 can be disperse | distributed more.

また、導光板２０の前面２０ｃに面してＬＥＤ３を配置したので、ＬＥＤ３の出射光を容易に導光板２０に入射させることができる。   Further, since the LED 3 is disposed facing the front surface 20c of the light guide plate 20, the emitted light of the LED 3 can be easily incident on the light guide plate 20.

また、ランプカバー６にはＬＥＤ３よりも前方にＬＥＤ３の視認性を低下させる処理が施される。これにより、照明室４の内部の実装基板７や配線を見えなくして貯蔵室２内の美感を向上することができる。また、ＬＥＤ３から前方に出射される光による眩しさを低減することができる。   Further, the lamp cover 6 is subjected to a process for reducing the visibility of the LED 3 in front of the LED 3. Thereby, the mounting board | substrate 7 and wiring inside the illumination chamber 4 can be made invisible, and the beauty in the storage chamber 2 can be improved. Moreover, the glare by the light radiate | emitted ahead from LED3 can be reduced.

次に、図６は第２実施形態の冷蔵庫１の貯蔵室２の側壁８の前部を示す上面断面図である。説明の便宜上、前述の図１〜図５に示す第１実施形態と同一の部分は同一の符号を付している。本実施形態は第１実施形態に対してＬＥＤ３の配置及び導光板２０の形状が異なっている。その他の部分は第１実施形態と同一である。   Next, FIG. 6 is a top sectional view showing a front portion of the side wall 8 of the storage chamber 2 of the refrigerator 1 according to the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the arrangement of the LEDs 3 and the shape of the light guide plate 20 are different from those of the first embodiment. Other parts are the same as those of the first embodiment.

ＬＥＤ３を実装する実装基板７は導光板２０と平行に配置され、ＬＥＤ３の出射面３ａが導光板２０の第２側面２０ｂに面して配置される。また、導光板２０の前部には後方が貯蔵室２側に向かって傾斜する傾斜面２３が形成され、ＬＥＤ３が傾斜面２３に対向する。   The mounting substrate 7 on which the LED 3 is mounted is disposed in parallel with the light guide plate 20, and the emission surface 3 a of the LED 3 is disposed to face the second side surface 20 b of the light guide plate 20. In addition, an inclined surface 23 whose rear side is inclined toward the storage chamber 2 side is formed at the front portion of the light guide plate 20, and the LED 3 faces the inclined surface 23.

ＬＥＤ３から出射された出射光はランプカバー６を透過して導光板８に第２側面２０ｂから入射する。導光板２０に入射した光は傾斜面２３で後方に反射し、第１、第２側面２０ａ、２０ｂで反射して導光板２０内を導光する。そして、第１側面２０ａまたは第２側面２０ｂに臨界角よりも小さい角度で入射した光は導光板２０の表面から出射される。傾斜面２３に反射膜や反射シート等の反射部材を設けてもよい。   The outgoing light emitted from the LED 3 passes through the lamp cover 6 and enters the light guide plate 8 from the second side face 20b. The light incident on the light guide plate 20 is reflected backward by the inclined surface 23 and is reflected by the first and second side surfaces 20 a and 20 b to guide the light guide plate 20. Then, the light incident on the first side surface 20 a or the second side surface 20 b at an angle smaller than the critical angle is emitted from the surface of the light guide plate 20. A reflective member such as a reflective film or a reflective sheet may be provided on the inclined surface 23.

本実施形態によると、第１実施形態と同様の効果を得ることができる。加えて、ＬＥＤ３が、導光板２０の側壁８側（第２側面２０ｂ）に面して傾斜面２３に対向配置される。これにより、ランプカバー６の突起部６ｂ（図３参照）を省くことができ、貯蔵物の取り出しを容易にして冷蔵庫１の利便性を向上することができる。   According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, the LED 3 faces the side wall 8 side (second side surface 20 b) of the light guide plate 20 and is disposed to face the inclined surface 23. Thereby, the protrusion part 6b (refer FIG. 3) of the lamp cover 6 can be omitted, and the convenience of the refrigerator 1 can be improved by making it easy to take out stored items.

第１、第２実施形態において、導光板２０は透明であればアクリル樹脂やガラス等を用いてもよい。しかし、ポリスチレン樹脂はアクリル樹脂やガラスに比して成形性がよく、光の拡散が大きい。このため、導光板２０を容易に形成できるとともに、背面２０ｆまで導光する光を少なくして第１側面２０ａや第２側面２０ｂから出射される光を多くすることができる。従って、貯蔵物の視認性をより向上することができる。   In the first and second embodiments, the light guide plate 20 may be made of acrylic resin or glass as long as it is transparent. However, polystyrene resin has better moldability and greater light diffusion than acrylic resin and glass. Therefore, the light guide plate 20 can be easily formed, and the light guided to the back surface 20f can be reduced to increase the light emitted from the first side surface 20a and the second side surface 20b. Therefore, the visibility of the stored item can be further improved.

また、導光板２０に着色材を混入して照明光を発色してもよい。これにより、ＬＥＤ３から離れた位置で発色するため、ＬＥＤ３に近いランプカバー６を着色するよりも着色材を少なくすることができる。このため、照度の低下を抑制して発色することができる。また、使用者の嗜好に応じて導光板２０を取り替えて照明光の発色を可変することができる。   Further, the illumination light may be colored by mixing a colorant into the light guide plate 20. Thereby, since the color is generated at a position away from the LED 3, it is possible to reduce the coloring material compared to coloring the lamp cover 6 close to the LED 3. For this reason, it can color by suppressing the fall of illumination intensity. Further, the color of the illumination light can be varied by replacing the light guide plate 20 according to the user's preference.

また、ランプカバー６にＬＥＤ３を挿通する孔部を設けてもよい。これにより、ＬＥＤ３の出射光が直接導光板２０に入射し、光の強度を向上することができる。この時、ランプカバー６を非透明に形成することにより、照明室４の内部の実装基板７や配線を見えなくして貯蔵室２内の美感を向上することができる。また、ＬＥＤ３から前方に出射される光による眩しさを低減することができる。   Further, a hole for inserting the LED 3 may be provided in the lamp cover 6. Thereby, the emitted light of LED3 enters into the light-guide plate 20 directly, and the intensity | strength of light can be improved. At this time, by forming the lamp cover 6 to be non-transparent, the mounting substrate 7 and the wiring inside the illumination chamber 4 can be made invisible, and the aesthetic feeling in the storage chamber 2 can be improved. Moreover, the glare by the light radiate | emitted ahead from LED3 can be reduced.

本発明によると、ＬＥＤにより貯蔵室内を照明する冷蔵庫に利用することができる。   According to this invention, it can utilize for the refrigerator which illuminates the storage chamber by LED.

１ 冷蔵庫
２ 貯蔵室
３ ＬＥＤ
４ 照明室
５ 枠部
６ ランプカバー
７ 実装基板
８ 側壁
１１ 支持部
１２ 冷気通路
１３ 金属パネル
２０ 導光板
２０ａ 第１側面
２０ｂ 第２側面
２０ｃ 前面
２１ 凹凸部
２２ 開口部
２３ 傾斜面 1 Refrigerator 2 Storage room 3 LED
DESCRIPTION OF SYMBOLS 4 Illumination room 5 Frame part 6 Lamp cover 7 Mounting board 8 Side wall 11 Support part 12 Cold air path 13 Metal panel 20 Light guide plate 20a 1st side surface 20b 2nd side surface 20c Front surface 21 Uneven part 22 Opening part 23 Inclined surface

Claims (6)

貯蔵物を収納する貯蔵室と、
前記貯蔵室の両側壁の前部に配されるとともに上下に並ぶ複数のＬＥＤと、
前記貯蔵室の両側壁に沿って配されるとともに前記ＬＥＤの出射光を前記貯蔵室の後部に導光する導光板と、
前記側壁の表面により形成された反射面と、
を備え、前記導光板は前記反射面に近接して設けられるとともに、前記側壁に面して前部から後部にわたって前後に延びる凹凸部を有し、
前記凹凸部の表面には非光沢面処理が施され、
前記導光板を導光して前記導光板から出射される光によって前記貯蔵室内を照明したことを特徴とする冷蔵庫。 A storage room for storing stored items;
A plurality of LEDs arranged at the front of both side walls of the storage room and lined up and down;
A light guide plate disposed along both side walls of the storage chamber and guiding the emitted light of the LED to the rear of the storage chamber;
A reflective surface formed by the surface of the side wall;
Wherein the light guide plate provided close to the reflective surface Rutotomoni, has an uneven portion extending in the front over the rear from the front facing the side wall,
Non-glossy surface treatment is applied to the surface of the uneven part,
A refrigerator characterized in that the storage chamber is illuminated by light guided from the light guide plate and emitted from the light guide plate. 前記導光板の前面に面して前記ＬＥＤを配置したことを特徴とする請求項１に記載の冷蔵庫。 The refrigerator according to claim 1 , wherein the LEDs are arranged facing the front surface of the light guide plate . 前記導光板は前記貯蔵室側の前部に後方が前記貯蔵室側に向かって傾斜する傾斜面を有し、前記ＬＥＤが前記導光板の前記側壁側に面して前記傾斜面に対向配置されることを特徴とする請求項１に記載の冷蔵庫。 The light guide plate has an inclined surface whose rear portion is inclined toward the storage chamber side at a front portion on the storage chamber side, and the LED faces the side wall side of the light guide plate and is opposed to the inclined surface. The refrigerator according to claim 1 . 前記ＬＥＤと前記導光板との間に前記ＬＥＤを覆う透明なランプカバーを設け、前記ランプカバーは前記ＬＥＤよりも前方に前記ＬＥＤの視認性を低下させる処理が施されることを特徴とする請求項１〜請求項３のいずれかに記載の冷蔵庫。 A transparent lamp cover that covers the LED is provided between the LED and the light guide plate, and the lamp cover is subjected to a process of reducing visibility of the LED in front of the LED. The refrigerator in any one of Claims 1-3 . 前記ＬＥＤと前記導光板との間に前記ＬＥＤを覆う非透明なランプカバーを設け、前記ＬＥＤが挿通される孔部を前記ランプカバーに形成したことを特徴とする請求項１〜請求項３のいずれかに記載の冷蔵庫。 The non-transparent lamp cover which covers the said LED between the said LED and the said light-guide plate was provided, and the hole part in which the said LED is penetrated was formed in the said lamp cover. The refrigerator in any one . 前記導光板がポリスチレン樹脂から成ることを特徴とする請求項１〜請求項５のいずれかに記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 5, wherein the light guide plate is made of polystyrene resin .
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JP2009141940A JP4971389B2 (en) 2009-06-15 2009-06-15 refrigerator
RU2012101272/13A RU2488757C1 (en) 2009-06-15 2010-06-09 Refrigerator
EP10789409.9A EP2444764B1 (en) 2009-06-15 2010-06-09 Refrigerator
PCT/JP2010/059741 WO2010147034A1 (en) 2009-06-15 2010-06-09 Refrigerator
CN201080026442.3A CN102803879B (en) 2009-06-15 2010-06-09 Refrigerator
ES10789409.9T ES2691272T3 (en) 2009-06-15 2010-06-09 Fridge

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