WO2012095937A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2012095937A1 WO2012095937A1 PCT/JP2011/007320 JP2011007320W WO2012095937A1 WO 2012095937 A1 WO2012095937 A1 WO 2012095937A1 JP 2011007320 W JP2011007320 W JP 2011007320W WO 2012095937 A1 WO2012095937 A1 WO 2012095937A1
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- WIPO (PCT)
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- interior lighting
- light
- refrigerator
- illuminance
- lighting
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D27/00—Lighting arrangements
Definitions
- This invention relates to the refrigerator which installed the illuminating device in the store
- a refrigerator As a refrigerator provided with a conventional lighting device, there is a refrigerator in which a plurality of white LEDs are mounted on a single substrate and installed on the top surface of the interior to irradiate the interior (see, for example, Patent Document 1). .
- FIG. 10 shows a perspective view of a lighting device in a conventional refrigerator described in Patent Document 1 above.
- the lighting device includes a mounting substrate 101, a white LED 102, and a heat insulating plate 104, and is installed in a refrigerator.
- the mounting substrate 101 is formed in a flat plate shape, a circuit pattern (not shown) is formed on one surface or both surfaces, and an epoxy resin-based substrate or an insulating metal substrate having good thermal conductivity is used.
- the white LED 102 is formed in a cannonball shape and has a structure in which white light is obtained by exciting a fluorescent material using blue light from a GaN-based blue LED, and two current-carrying terminals 103 for conducting current are led out. .
- the heat insulating plate 104 is formed in a flat plate shape using a resin such as urethane, and a plurality of insertion holes are arranged in parallel to be provided between the mounting substrate 101 and the white LED 102.
- the energization terminal 103 is inserted through the insertion hole of the heat insulating plate 104, soldered to the circuit pattern of the mounting substrate 101, and a plurality of white LEDs 102 are arranged in parallel on the mounting substrate 101.
- the heat insulating plate 104 may be abolished.
- the white LED 102 is not energized when the refrigerator door is closed, the interior is not illuminated.
- Refrigerators are usually used in an environment where the interior lighting of the kitchen is lit, and even if the amount of light in the interior is low, the interior can be overlooked, but it is difficult for the user to see the interior.
- the light intensity of the illumination must be set bright. That is, when the outside (periphery) of the refrigerator is bright, wasteful power is consumed.
- the amount of light increases, the amount of heat generated by the light source increases, causing problems such as deterioration of the cooling performance of the refrigerator and reduction of the lighting life.
- This invention solves the said conventional subject, and it aims at providing the refrigerator provided with the illuminating device which can adjust the light quantity of interior lighting according to the illumination intensity outside a refrigerator.
- a refrigerator includes a housing provided with a plurality of storage rooms partitioned by a heat insulating wall and a heat insulating door, interior lighting for illuminating the interior of the storage room, and the housing.
- the door open / close detection means for detecting the open / close state of the heat insulation door, and the door open / close detection means.
- a control means for adjusting the light quantity of the interior lighting according to the detected illuminance detected by the external illuminance detection means, and when the heat insulating door is opened by the control means, The amount of light and the lighting pattern are changed.
- the present invention makes it possible to realize lighting that is highly energy efficient, has a long service life, and is easy on the eyes of the user, it is possible to provide a refrigerator that is energy saving and easy to use.
- FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention.
- 2 is a cross-sectional side view taken along the line AA of FIG. 1 of the refrigerator according to Embodiment 1 of the present invention.
- FIG. 3 is a control block diagram of the refrigerator in the first embodiment of the present invention.
- FIG. 4 is a top view when the refrigerator according to Embodiment 1 of the present invention is installed at the corner of the kitchen.
- FIG. 5 is a time chart showing the output to the interior lighting of the refrigerator in the first embodiment of the present invention.
- FIG. 6 is a time chart showing an output change to the interior lighting of the refrigerator in the first embodiment of the present invention.
- FIG. 7 is a light amount variable circuit diagram of the interior lighting of the refrigerator in the first embodiment.
- FIG. 8 is a side cross-sectional view of the refrigerator in the second embodiment of the present invention.
- FIG. 9 is a control block diagram of the refrigerator in the second embodiment of the present invention.
- FIG. 10 is a perspective view of a lighting device in a conventional refrigerator described in Patent Document 1. As shown in FIG.
- the first invention is a housing provided with a plurality of storage rooms partitioned by a heat insulating wall and a heat insulating door, interior lighting for irradiating the storage room, and a heat insulating door of the uppermost storage room among the storage rooms.
- an external illuminance detecting means for detecting an illuminance outside the housing
- a door open / close detecting means for detecting an open / closed state of the heat insulating door
- the door open / close detecting means that the heat insulating door is in an open state.
- the control means for adjusting the light amount of the interior lighting, and when the heat insulating door is continuously opened by the control means, It changes the amount of light and lighting pattern, and can illuminate the interior with the optimal amount of light according to the external brightness of the user, saving energy, extending the life of the lighting, and Easy lighting is possible.
- the second aspect of the invention is to increase the light amount of the interior lighting when it is determined to be high illuminance by the external illuminance detection means, and to decrease the light amount of the interior illumination when it is determined to be low illuminance.
- the light amount of the interior lighting can be suppressed so that the user does not feel dazzling when the light is dark.
- the light amount of the interior lighting is decreased, and when it does not correspond to any of the above, the light amount is increased, and the outside is bright.
- the amount of light in the interior lighting is suppressed to save energy, the amount of light in the interior lighting is suppressed so that the user does not feel dazzling when the outside is dark, and the stored items are easy to see when it is not bright or dark.
- the amount of light can be increased.
- the fourth invention uses a light emitting diode as a light source for the interior lighting, enables low voltage drive and low heat generation, simplifies the drive circuit, improves controllability, and generates heat from the light source. Reduction is possible.
- the amount of light in the interior lighting is adjusted by pulse variable control, and a method of adjusting the power by duty control can be used, thereby changing the amount of light in the interior lighting with simple control. Can be made.
- the sixth invention adjusts the light quantity of the interior lighting by current variable control, and eliminates the flickering of the illumination generated by the pulse control when the light quantity is low by using a method such as switching the current limiting resistor. be able to.
- the light quantity of the interior lighting is adjusted by voltage variable control, and both the power supply voltage and current of the lighting can be suppressed.
- the interior lighting is composed of a plurality of light sources, and the amount of light is adjusted according to the number of lighting of the light sources. Become.
- a storage object detection means in the storage chamber, and the light quantity of the interior lighting is adjusted according to the detection of the external illuminance detection means and the storage object detection means. It is possible to prevent the stored items from becoming difficult to see due to absorption of light.
- FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention
- FIG. 2 is a cross-sectional side view taken along the line AA of FIG. 1 of the refrigerator according to the embodiment
- FIG. 3 is a control block diagram of the refrigerator according to the embodiment.
- FIG. 4 is a top view when the refrigerator according to the embodiment is installed in the corner of the kitchen.
- the casing of the refrigerator 1 is composed of a heat insulating wall 2 and heat insulating doors 3 a and 3 b, and insulates the interior from the outside.
- the refrigerator 1 is provided with a plurality of storage shelves 5 for organizing and storing stored items in the storage chamber 4.
- the heat insulation door 3b is provided with a display unit 6 for displaying the operation status and setting status of the refrigerator.
- An illuminance sensor 7 is mounted on the display unit 6 as external illuminance detection means.
- the illuminance sensor 7 as the external illuminance detection means is provided at the heat insulating door of the uppermost storage room among the plurality of storage rooms of the refrigerator 1 and is provided at a height close to the position of the user's eyes. Yes. Therefore, brightness equivalent to the illuminance felt by the user can be detected.
- the height close to the eyes of the user is provided with five general storage rooms as shown in the figure, and in a refrigerator having a storage capacity of about 400 L to 600 L, it is 1 ⁇ 2 in the height direction of the uppermost storage room. It indicates about 1/5 in the height direction of the uppermost storage chamber from the vicinity and the uppermost end.
- the interior lighting 8 is embedded in the indoor side wall of the storage room 4 on the left and right as viewed from the front of the refrigerator 1.
- the interior lighting 8 has a plurality of white LEDs 9 a to 9 d arranged in the vertical direction, and is installed so as to irradiate the back side from the front side of the storage chamber 4.
- the white LED as the light source, it is possible to smoothly cope with the varied voltage. Further, it can be driven at a low voltage. Therefore, the interior lighting 8 can be set in a low heat generation state. As described above, by using a white LED as the light source, simplification of the drive circuit, improvement in controllability, and reduction in heat generation of the light source can be expected.
- a door open / close detecting means 10 is provided at the periphery of the front opening of the storage chamber 4.
- the control means 11 detects that the heat insulating doors 3a and 3b are open, the interior lighting 8 is turned on. At this time, the light quantity of the interior lighting 8 is adjusted by the control means 11 based on the illuminance detected by the illuminance sensor 7.
- the attachment surface of the illuminance sensor 7 may be close to the wall when the heat insulating door 3b is opened as shown in FIG.
- the control means 11 stores the detected illuminance from the illuminance sensor 7 at any time, and determines the light amount of the interior illumination according to the detected illuminance immediately before or immediately after detecting that the heat insulating door 3b is opened.
- the relationship between the detected illuminance detected by the illuminance sensor 7 and the amount of light of the interior lighting 8 is as shown in Table 1, for example.
- Table 1 shows three types of light amount change patterns of the interior lighting 8 with respect to the detected illumination L of the illumination sensor 7, and the light amount of the interior lighting 8 is described as a relative value when the maximum light amount is 100%. ing.
- pattern 1 is a pattern determined as follows. That is, when the external illuminance detected by the illuminance sensor 7 is equal to or less than the first reference external illuminance (set to 15 lux in the present embodiment), which is one of the preset reference external illuminances, it is determined that the image is dark. The light quantity of the interior lighting 8 is set to 100%. When the illuminance sensor 7 detects an external illuminance equal to or less than the second reference external illuminance (in this embodiment, set to 40 lux), the illuminance sensor 7 determines that the illuminance is slightly dark and the light amount of the interior lighting 8 is 75%. To do.
- the illuminance sensor 7 detects external illuminance exceeding the second reference external illuminance (40 lux), it is determined that the light is bright and the light quantity of the interior lighting 8 is set to 50%.
- the external illuminance is bright, external light also illuminates the stored items in the storage, so that it is possible to look over the stored items in the storage.
- the refrigerator since the outside is often bright, the light quantity of the interior lighting 8 can be suppressed, and the power consumption can be reduced.
- the pattern 1 has a brightness that is obtained by adding both the brightness that reaches the interior from the outside and the brightness by the interior lighting 8 as a lighting function when the user searches for the stored items in the interior.
- the purpose is to fulfill.
- Pattern 2 is determined to be dark when the illuminance sensor 7 detects the first reference external illuminance (15 lux) or less, and the light amount is set to 50% for the user who feels the interior lighting 8 dazzling. Moreover, when the second reference external illuminance (40 lux) or less is detected, it is determined to be slightly dark, and the light amount is set to 75%, which is not dazzling and easy to see the stored items. Furthermore, when the illuminance sensor 7 detects an external illuminance exceeding the second reference external illuminance (40 lux), it is determined to be bright and is set to 100% at which it can be felt that the interior lighting 8 is turned on. Thus, not only can the light quantity of the interior lighting 8 be suppressed and the power consumption can be reduced, but also it is possible to consider the glare of the user and the visibility of the stored items.
- the pattern 2 is a pattern that focuses on the user's sensual elements so that the user is not visually dazzled.
- the purpose is to perform a function aimed at a universal design that is gentle on the eyes and has no sense of incongruity by illuminating the stored items with low illuminance.
- Pattern 3 is determined to be dark when the illuminance sensor 7 detects external illuminance below the first reference external illuminance (15 lux), and the amount of light is set to 50% for the user who feels the interior lighting 8 dazzling. .
- external illuminance below the second reference external illuminance (40 lux) when external illuminance below the second reference external illuminance (40 lux) is detected, it is determined that it is a little dark. At this time, the amount of light that is easy to see is 100% for the user who does not feel dazzling.
- the detected external illuminance exceeds the second reference external illuminance (40 lux) it is determined that the light is bright, and external light also illuminates the stored items in the storage, so the light amount of the internal lighting 8 is 50%. And In this way, the configuration has the advantages of the patterns 1 and 2.
- the light quantity of the interior lighting 8 is set to 50% when the outside that is assumed to have the highest frequency of opening and closing the refrigerator is bright, it is possible to realize further energy saving. Therefore, when a pattern that can achieve energy saving is selected when the usage frequency is assumed to be high, such as pattern 3, energy saving is associated with a place that can be seen by the user, such as a door or casing outside the refrigerator. It is good to perform lighting and display to make it.
- the above pattern 1 to pattern 3 may be configured so that the user can set according to his / her preference from an operation unit (not shown).
- a user who has no visual problems and is always bright and prefers pattern 1 selects pattern 1
- a household that has a user who is desirable to be not visually burdened such as an elderly person or a child, selects pattern 2.
- households that are more conscious of energy conservation have a wider range of user choices, such as selecting pattern 3, making it possible to provide a refrigerator that is more user-friendly and can also support energy conservation. .
- the detected illuminance L (external illuminance) in Table 1 and the relative light intensity of the interior lighting 8 are not limited to the values described in the table, but should be set to optimum values depending on the configuration of the refrigerator.
- FIG. 5 is a time chart showing the output to the refrigerator interior lighting in the first embodiment of the present invention
- FIG. 6 is a time chart showing the output change to the refrigerator interior lighting in the first embodiment of the present invention. It is.
- the light quantity of the interior lighting 8 is adjusted by adjusting the effective power supplied to the white LEDs 9a to 9d by duty control of the output voltage.
- the output pulse width is T1
- the pulse period is T2
- the duty ratio T1 / T2 is changed according to the detected value of the external illuminance of the illuminance sensor 7.
- T1 / T2 is set to a level at which the user does not feel the flickering of the white LEDs 9a to 9d.
- the amount of light may be gradually changed (particularly increased) until a predetermined brightness is obtained.
- the duty ratio is changed in three stages, but the light quantity can be changed more smoothly by increasing the duty ratio changing stage more finely.
- the power consumption may be suppressed by gradually decreasing the duty ratio.
- FIG. 7 is a light amount variable circuit diagram of the interior lighting of the refrigerator in the first embodiment.
- a circuit as shown in FIG. 7 may be configured, and a means for changing the supply current to the interior lighting 8 to I1 to I3 by switching the switches SW1 to SW3. good.
- Supply currents I1 to I3 are determined by resistors R1 to R3 having different resistance values, respectively.
- a means for adjusting the light quantity of the interior lighting 8 for example, only half of the plurality of white LEDs 9a to 9d shown in FIG. 2 are turned on, or only 3/4 are turned on. Means may be used.
- the interior lighting 8 that irradiates the interior of the storage room 4 partitioned by the heat insulating wall 2 and the heat insulating doors 3a and 3b, and the uppermost storage room among the plurality of storage rooms.
- An illuminance sensor 7 for detecting the external illuminance of the refrigerator 1, a door open / close detection means 10 for detecting the open / closed state of the heat insulation doors 3 a and 3 b, and the door open / close detection means 10 are opened on the heat insulation doors 3 a and 3 b.
- control means 11 for adjusting the amount of light of the interior lighting 8 according to the illuminance detected by the illuminance sensor 7 immediately before or after detecting that the state has been reached, and according to the external brightness of the user. It is possible to illuminate the interior with the optimal amount of light, realizing energy saving, long life, and user-friendly lighting.
- the light emitting diodes 9a to 9d are used as the light source of the interior lighting 8, which enables low voltage driving and low heat generation, simplification of the driving circuit, and improvement of controllability. And the heat generation of the light source can be reduced.
- the light quantity and lighting pattern of the interior lighting 8 are changed with the time when the heat insulation doors 3a and 3b are continuously opened by the control means 11, and a user's brightness.
- the control means 11 In accordance with the familiarity of the eyes, it is possible to gradually increase or decrease the amount of light of the interior lighting, and it is possible to realize lighting that is gentle to the eyes of the user.
- FIG. 8 is a side sectional view of the refrigerator according to Embodiment 2 of the present invention
- FIG. 9 is a control block diagram of the refrigerator according to the embodiment.
- the same constituent elements as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the stored item detection means 12 is installed in the storage chamber 4.
- This stored item detection means 12 detects the position and amount of the stored item, and includes an illuminance sensor 7 that is not an external illuminance detection means, and the illuminance sensor 7 reduces the amount of light attenuated by light shielding by the stored item. It is realized by detecting by.
- a method of detecting a stored item with a pressure sensor is also conceivable.
- the light amount of the interior lighting 8 is adjusted only by the illuminance detected by the illuminance sensor 7.
- the interior of the store is sufficiently covered by the shadow of the stored items. It may be impossible to irradiate. For this reason, it is desirable to adjust the light quantity of the interior lighting 8 in consideration of not only the brightness outside the refrigerator but also the position and amount of the stored items.
- Table 2 shows the light amount correction value of the interior lighting with respect to the storage amount.
- the light quantity of the interior lighting in Table 2 is obtained by adding the correction values in Table 2 with Table 1 as a reference. For example, when the stored item detection means 12 detects that the stored amount is small, the light amount is set to minus 20% because light easily reaches every corner of the storage. Further, when it is detected that the storage amount is slightly large, correction is not performed, and when it is detected that the storage amount is large, the light amount is set to plus 20% because it becomes difficult for light to reach the inside of the cabinet.
- the storage room 4 includes the storage object detection means 12 and detects not only the external illuminance of the refrigerator but also the storage object in the refrigerator, thereby reducing the amount of light necessary for the user. Irradiation of the inside of the cabinet can realize more convenient lighting.
- the refrigerator according to the present invention can be applied to a wide range of equipment to which lighting is applied, such as an article storage device with a door, as well as being applied as a lighting device for a household or commercial refrigerator. Is.
Abstract
Description
図1は本発明の実施の形態1における冷蔵庫の正面図、図2は同実施の形態における冷蔵庫の図1のA-A側面断面図、図3は同実施の形態における冷蔵庫の制御ブロック図、図4は同実施の形態における冷蔵庫をキッチンのコーナー部に設置したときの上視図である。
図8は本発明の実施の形態2における冷蔵庫の側面断面図、図9は同実施の形態における冷蔵庫の制御ブロック図である。ここで、実施の形態1と同一の構成要件については、同一の符号を付して詳細な説明を省略する。
2 断熱壁
3a、3b 断熱扉
4 収納室
5 収納棚
6 表示部
7 照度センサ
8 庫内照明
9a、9b、9c、9d 白色LED
10 扉開閉検知手段
11 制御手段
12 収納物検知手段
Claims (9)
- 断熱壁と断熱扉によって区画された収納室を複数設けた筐体と、
前記収納室の内部を照射する庫内照明と、
前記筐体の外部の照度を検知する外部照度検知手段と、
前記断熱扉の開閉状態を検知する扉開閉検知手段と、
前記扉開閉検知手段によって前記断熱扉が開状態になったことを検知した場合に、前記外部照度検知手段により検知した検知照度に応じ、前記庫内照明の光量を調節する制御手段を備え、前記制御手段により、前記断熱扉が開状態になった場合に、前記庫内照明の光量や点灯パターンを変化させることを特徴とした冷蔵庫。 - 前記制御手段は、
前記外部照度検知手段が検知した検知照度が、予め設定した照度である基準外部照度よりも高照度と判定したときの前記庫内照明の光量よりも、前記基準外部照度よりも低照度と判定したときの前記庫内照明の光量を低下させる
請求項1に記載の冷蔵庫。 - 前記外部照度検知手段により、予め設定した照度である第二基準外部照度よりも高照度、または、予め設定した照度であって前記第二基準外部照度よりも低い照度である第一基準外部照度よりも低照度と判定したときの前記庫内照明の光量よりも、いずれにも該当しないときの前記庫内照明の光量を上昇させる請求項1に記載の冷蔵庫。
- 前記庫内照明の光源は、発光ダイオードである
請求項1から3のいずれか一項に記載の冷蔵庫。 - 前記庫内照明の光量をパルス可変制御によって調節する
請求項1から4のいずれか一項に記載の冷蔵庫。 - 前記庫内照明の光量を電流可変制御によって調節する
請求項1から4のいずれか一項に記載の冷蔵庫。 - 前記庫内照明の光量を電圧可変制御によって調節する
請求項1から4のいずれか一項に記載の冷蔵庫。 - 前記庫内照明は複数の光源で構成され、光源の点灯数によって光量を調節する
請求項1から4のいずれか一項に記載の冷蔵庫。 - 前記収納室内に収納物検知手段を備え、前記外部照度検知手段と前記収納物検知手段の検知に応じて前記庫内照明の光量を調節する
請求項1から8のいずれか一項に記載の冷蔵庫。
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BR112013017701A BR112013017701A2 (pt) | 2011-01-14 | 2011-12-27 | refrigerador |
CN201180064685.0A CN103328912B (zh) | 2011-01-14 | 2011-12-27 | 冷藏库 |
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JP2011-005798 | 2011-01-14 | ||
JP2011005798A JP5655578B2 (ja) | 2011-01-14 | 2011-01-14 | 冷蔵庫 |
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JP (1) | JP5655578B2 (ja) |
CN (1) | CN103328912B (ja) |
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WO (1) | WO2012095937A1 (ja) |
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JP6478083B2 (ja) * | 2014-02-20 | 2019-03-06 | パナソニックIpマネジメント株式会社 | 冷蔵庫 |
DE102014205727A1 (de) * | 2014-03-27 | 2015-10-01 | BSH Hausgeräte GmbH | Haushaltskältegerät mit einer Innenraumbeleuchtung |
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JP2018096686A (ja) * | 2018-01-25 | 2018-06-21 | パナソニックIpマネジメント株式会社 | 冷蔵庫 |
JP6671002B2 (ja) * | 2018-04-16 | 2020-03-25 | パナソニックIpマネジメント株式会社 | 冷蔵庫 |
CN113340046A (zh) * | 2021-05-14 | 2021-09-03 | 澳柯玛股份有限公司 | 一种冰箱照明灯亮度自动调节系统及方法 |
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DE102004021858A1 (de) * | 2004-05-04 | 2005-12-01 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät mit Innenraumbeleuchtung und Beleuchtungsbaugruppe dafür |
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DE102006040192B4 (de) * | 2005-08-29 | 2018-12-27 | Lg Electronics Inc. | Vorrichtung und Verfahren zum Steuern einer Kühlschranklampe |
JP5340582B2 (ja) * | 2007-11-22 | 2013-11-13 | 三洋電機株式会社 | ショーケース |
CN201726574U (zh) * | 2010-07-23 | 2011-01-26 | 海信容声(广东)冰箱有限公司 | 一种箱体内部照明灯的自动控制装置 |
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- 2011-01-14 JP JP2011005798A patent/JP5655578B2/ja active Active
- 2011-12-27 WO PCT/JP2011/007320 patent/WO2012095937A1/ja active Application Filing
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JP2008164218A (ja) * | 2006-12-28 | 2008-07-17 | Matsushita Electric Ind Co Ltd | 冷蔵庫 |
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EP3842718A1 (en) * | 2019-12-27 | 2021-06-30 | Zhou, Shaowei | Refrigerator light-sensing system capable of saving energy and reducing noise |
WO2022228909A1 (de) * | 2021-04-27 | 2022-11-03 | BSH Hausgeräte GmbH | Verfahren zum umgebungsanpassten beleuchten eines raumbereichs eines haushaltsgeräts, sowie haushaltsgerät |
DE102021214674A1 (de) | 2021-12-20 | 2023-06-22 | BSH Hausgeräte GmbH | Haushaltsgerät mit einer Multi-Sensor-Platine |
Also Published As
Publication number | Publication date |
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CN103328912A (zh) | 2013-09-25 |
BR112013017701A2 (pt) | 2016-10-11 |
JP2012145303A (ja) | 2012-08-02 |
JP5655578B2 (ja) | 2015-01-21 |
CN103328912B (zh) | 2015-04-08 |
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