DE102004021858A1 - Household appliance with interior lighting and lighting assembly therefor - Google Patents

Household appliance with interior lighting and lighting assembly therefor Download PDF

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Publication number
DE102004021858A1
DE102004021858A1 DE200410021858 DE102004021858A DE102004021858A1 DE 102004021858 A1 DE102004021858 A1 DE 102004021858A1 DE 200410021858 DE200410021858 DE 200410021858 DE 102004021858 A DE102004021858 A DE 102004021858A DE 102004021858 A1 DE102004021858 A1 DE 102004021858A1
Authority
DE
Germany
Prior art keywords
light
door
light source
sensor
interior
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE200410021858
Other languages
German (de)
Inventor
Jan-Grigor Schubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgaraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgaraete GmbH filed Critical BSH Bosch und Siemens Hausgaraete GmbH
Priority to DE200410021858 priority Critical patent/DE102004021858A1/en
Publication of DE102004021858A1 publication Critical patent/DE102004021858A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D27/00Lighting arrangements
    • F25D27/005Lighting arrangements combined with control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/02Sensors detecting door opening

Abstract

A household appliance having a body (1) and a door (2) enclosing an interior space (3) and having a light source (14) for illuminating the interior space (3) has a door opening sensor for detecting the state - open or closed - the door (2) and for setting the operating state of the light source based on the detected state of the door (2). The door opening sensor comprises a light sensor (12) which is exposed to ambient light with the door open (2) and is cut off from the ambient light when the door (2) is closed.

Description

  • The The present invention relates to a cabinet or chests-like household appliance, in particular a refrigerator, with interior lighting and a lighting assembly for such a household appliance.
  • Usually is the interior lighting of a refrigerator, such as a refrigerator, Freezer or a freezer by a mechanical Switch controlled in the body of the device at its open side is taken in by opening or shooting the appliance door or flap actuated to become a light source in the interior of the device when opening the Door automatically one and at her Shut down turn off again.
  • The Control of interior lighting by such a mechanical Switch has been virtually unchanged for decades, yet it shows a number of disadvantages. One is the mechanical switch is susceptible to wear but, especially when it sinks between the inner container and outer wall of the body of a household appliance built-in, difficult to access, so a repair or replacement of this switch is costly is. Mostly, the movement of the door on the switch with the help a slider, which can easily get stuck if its guide is dirty.
  • Of another makes the need to switch or at least one Slider for its operation at the door facing the open side of the body, while the Light source advantageously placed deeper in the interior of the household appliance is, a spatial Separation of switch and light source required, so both in separate operations must be mounted with a correspondingly high workload.
  • task the present invention is to provide a household appliance and a lighting assembly for a household appliance, the ones mentioned above Remedy disadvantages.
  • The Using a light sensor such. B. a photodiode or a Phototransistor for adjusting the operating state of the light source for illuminating the interior as defined in claim 1 the complete one Waiver of moving parts. The control of the interior lighting is therefore practically wear- and maintenance free.
  • Preferably the light sensor is arranged in the interior of the household appliance, so he closed the door inevitably cut off from the ambient light.
  • There such a light sensor is not necessarily of the light source self-generated light is cut off, is expediently one Timer for re-switching the light source after a predetermined duty cycle provided. If this timer with the door closed takes effect the light sensor stops lighting and the light source remains off.
  • one According to another embodiment, the light sensor can be arranged be that with the door closed by the light of the light source is cut off. In this case, a timer is to be switched off again the light source is not required.
  • It can be a delay element to the delayed Switching the interior lighting after detection of a change of state the door be provided so that a user watching the switching process and make sure that the interior lights are not turned on constantly is.
  • The household appliance can over it also with a mode selector switch be equipped, which is a switch between an automatic Control of the light source by the light sensor and at least one another operating mode, in which the light source is independent of the light detected by the light sensor on or off is. This may be desirable be when the ambient light in the vicinity of the household appliance so strong is that an extra Lighting the interior is not needed, or if the door of the household appliance in the dark open and the light sensor does not respond.
  • A Simplification of the assembly and accordingly a cost saving arises when the light source and the light sensor in a common lighting assembly are housed. Therefore, the subject of the present invention also a lighting assembly for a household appliance with a Light source and a light sensor that is set up, the light source turn on when it detects light.
  • Preferably is also a timer for re-switching the light source after a predetermined duty cycle, as explained above, part the lighting assembly.
  • Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying figures. Show it:
  • 1 a schematic view of a household appliance according to a first embodiment of the invention;
  • 2 a block diagram of the lighting assembly of the household appliance 1 ;
  • 3 a perspective view of a household appliance according to a second embodiment of the invention;
  • 4 a block diagram of a modified embodiment of the lighting assembly; and
  • 5 a block diagram of another embodiment of the lighting assembly.
  • 1 shows a perspective view of a refrigerator as an example of an inventive household appliance with body 1 , to the corpus 1 battered door 2 and interior 3 , On a side wall of the interior 3 there is a lighting module 4 , A rear part of the assembly 4 with transparent screen 5 hides a light source; in an opaque housing part 6 a light sensor is housed, to which a light guide is connected. The light guide 7 extends along the wall of the interior 3 to an inlet window 8th at the front of the body 1 , which with door closed by one of the door 2 worn magnetic sealing profile 9 is covered light-tight. Only when opening the door 2 the magnetic sealing profile 9 from the inlet window 8th Ambient light can reach the light sensor. The light guide 7 is shown in dashed lines in the figure, as it on its along the inner wall extending portion by a light-tight adhesive strip 11 is covered.
  • 2 shows in a block diagram components of the lighting assembly 4 , These are a photodiode 12 at which the light guide 7 ends, one with the photodiode 12 in series between two terminals of a DC supply voltage switched capacitor 13 , the light source 14 , a transistor connected in series with it 15 or equivalent circuit breaker and a resistor 16 , the one control input of the transistor 15 with a connection point between photodiode 12 and capacitor 13 combines.
  • As long as the photodiode 12 is unexposed and locks, is the capacitor 13 de-energized, and the transistor 15 locks. The light source 14 is switched off.
  • When light on the photodiode 12 meets, because the door 2 opened and the magnetic sealing profile 11 is lifted from the entrance window, one begins by the photodiode 12 flowing photocurrent, the capacitor 13 charge, so that the voltage at the control input of the transistor 15 gradually increases and this finally opens. The light source 14 is turned on.
  • Will the door 2 closed again, so no light on the photodiode 12 meets, discharges the capacitor 13 over the transistor 15 so that the latter locks after a short delay and the light source 14 off.
  • 3 shows a perspective view of a second embodiment of the household appliance. It is different from the one of 1 in that the photodiode 12 Do not light over the light guide 7 but through a window 17 that in the opaque housing part 6 at the one from the screen 5 turned away and the door opening facing side is formed. If different from the representation of the 3 the lighting assembly 4 in the immediate vicinity of the closed door 2 is arranged so that the door 2 when closed, the window 17 from light of the light source 14 shields, is the in 2 shown inner structure of the lighting assembly 4 also suitable in this embodiment.
  • However, preferred is in 4 shown construction, in which circuit components, already with reference to 2 have been explained with the same reference numerals. Instead of resistance 16 Here is a timer 18 between the midpoint between photodiode 12 and capacitor 13 on the one hand and the control input of the transistor 15 on the other hand switched. A second transistor 19 is parallel to the capacitor 13 arranged, and its base is via a capacitor 21 with the collector of the transistor 15 connected. A mode selector switch 20 has three switch positions, a position a in which it emits the transistor 15 connects to ground potential, an unconnected switch position b and a switching position c, in which it is the collector of the transistor 13 connects to mass.
  • As long as the refrigerator door 2 is closed and the light source 14 is off, the photodiode 12 so receiving no light, it locks, and at the entrance of the timer 18 is ground potential. Accordingly, the output of the timing element and thus the base of the transistor is located 15 to ground, this locks, and in the position shown a of the mode selector 20 thus remains the light source 14 switched off.
  • If the door is opened, leaving the photodiode 12 Light sees, a photocurrent flows into the capacitor 13 , and the voltage at the input of the timer 18 rises until it is triggered and provides for a fixed period of time at its output a positive potential through which the transistor 15 becomes permeable. The light source 14 is turned on.
  • After expiration of the predetermined period of time provides the timer 18 at its output again ground potential, the transistor 15 returns to the locked state, and the light source 14 is switched off. This increases the potential at the collector of the transistor 15 abruptly to the value of the supply voltage, and a positive voltage pulse reaches across the capacitor 21 the transistor 19 so that it becomes conductive for a short time and the capacitor 13 shorts. This will be the input signal of the timer 18 pulled to ground. After the voltage pulse has decayed, the transistor starts 19 to lock again. If at this time the door 2 is still open and ambient light on the photodiode 12 falls, then, after a slight delay, the timing element 18 triggered again. That is, as long as the door 2 is open and ambient light on the photodiode 12 falls, the light source works 14 continuously with short breaks. These interruptions remind a user that the door 2 should be closed again to avoid unnecessary cold losses.
  • If at the time of opening the transistor 19 the door 2 closed again, no light falls on the photodiode 12 , the capacitor 13 will not reload, and the light source 14 stays off.
  • A similar behavior is with the in 5 realized as a block diagram circuit. The capacitor 13 is here by a resistance 22 replaced, between the photodiode and the positive supply potential is a series resistor 23 inserted, and the collector of the transistor 19 is not with the input of the timer 18 but with the midpoint between the series resistor 23 and the photodiode 12 ,
  • If in this embodiment the door 2 is opened, leads light incident on the photodiode 12 immediately to a voltage drop across the resistor 22 and thus for triggering the timing element 18 and turning on the light source 14 , After the expiration of the predetermined period of time switch 18 locks the transistor 13 , And the resulting voltage increase at its collector transmits over the capacitor 21 as a positive voltage pulse to the base of the transistor 19 , As a result, the transistor closes 19 the photodiode 12 and the resistance 22 short, giving the potential at the input of the timer 18 drops to earth. If after charging the capacitor 21 the transistor 19 locks again, the potential at the input of the timer increases 18 again, if ambient light continues on the photodiode 12 falls and the light source 14 will be turned on again. If there is no more ambient light, the light source remains 14 switched off.

Claims (9)

  1. Cabinet or chests-like household appliance with a carcass ( 1 ) and a door ( 2 ), which has an interior ( 3 ) and with a light source ( 14 ) for illuminating the interior ( 3 ) and a door opening sensor for detecting the condition - open or closed - of the door ( 2 ) and for setting the operating state of the light source based on the detected state of the door ( 2 ), characterized in that the door opening sensor comprises a light sensor ( 12 ), with the door open ( 2 ) Exposed to ambient light and with the door closed ( 2 ) is shielded from ambient light.
  2. Domestic appliance according to claim 1, characterized in that the light sensor ( 12 ) in the interior ( 3 ) is arranged.
  3. Domestic appliance according to claim 2, characterized in that it has a timer ( 18 ) to turn off the light source ( 14 ) after a predetermined duty cycle.
  4. Domestic appliance according to claim 1, characterized in that the light sensor ( 12 ) with the door closed ( 2 ) from the light of the light source ( 14 ) is shielded.
  5. Domestic appliance according to one of the preceding claims, characterized in that the light sensor ( 12 ) a delay element ( 13 ) for delayed switching of the light source after detection of a change of state of the door ( 2 ) having.
  6. Domestic appliance according to one of the preceding claims, characterized in that it has a mode selector switch ( 20 ) for switching between automatic control (a) of the light source ( 14 ) through the light sensor ( 12 ) and at least one further mode (b, c), in which the light source ( 14 ) regardless of the light sensor ( 12 ) is switched on or off.
  7. Domestic appliance according to one of the preceding claims, characterized in that the light source ( 14 ) and the light sensor ( 12 ) in a common lighting assembly ( 4 ) are housed.
  8. Lighting assembly for a household appliance, with a light source ( 14 ) and a light sensor ( 12 ), which is set up the light source ( 14 ) when it detects light.
  9. Illumination assembly according to claim 8, characterized in that it comprises a timer ( 18 ) to turn off the light source ( 14 ) after a predetermined duty cycle.
DE200410021858 2004-05-04 2004-05-04 Household appliance with interior lighting and lighting assembly therefor Withdrawn DE102004021858A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410021858 DE102004021858A1 (en) 2004-05-04 2004-05-04 Household appliance with interior lighting and lighting assembly therefor

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE200410021858 DE102004021858A1 (en) 2004-05-04 2004-05-04 Household appliance with interior lighting and lighting assembly therefor
US11/587,409 US20070223210A1 (en) 2004-05-04 2005-04-29 Household Appliance Comprising an Interior Light, and Lighting Subunit Therefor
RU2006137814/12A RU2382299C2 (en) 2004-05-04 2005-04-29 Household appliance with illumination of inner space and lighting unit for such household
PCT/EP2005/051977 WO2005108889A1 (en) 2004-05-04 2005-04-29 Household appliance comprising an interior light, and lighting subunit therefor
EP20050738064 EP1745253A1 (en) 2004-05-04 2005-04-29 Household appliance comprising an interior light, and lighting subunit therefor
CNB2005800141719A CN100561087C (en) 2004-05-04 2005-04-29 Home appliances and the light fixture that is used for this home appliances with inner room illumination

Publications (1)

Publication Number Publication Date
DE102004021858A1 true DE102004021858A1 (en) 2005-12-01

Family

ID=34965659

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200410021858 Withdrawn DE102004021858A1 (en) 2004-05-04 2004-05-04 Household appliance with interior lighting and lighting assembly therefor

Country Status (6)

Country Link
US (1) US20070223210A1 (en)
EP (1) EP1745253A1 (en)
CN (1) CN100561087C (en)
DE (1) DE102004021858A1 (en)
RU (1) RU2382299C2 (en)
WO (1) WO2005108889A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200906616T1 (en) * 2007-04-02 2010-03-22 Arçeli̇k Anoni̇m Şi̇rketi̇ A cooler.
US7714716B2 (en) * 2007-07-25 2010-05-11 Robert Bosch Gmbh Coded security sensor for a door
ITMI20081475A1 (en) * 2008-08-06 2010-02-07 I C A Internat S R L A lighting device for household appliances
WO2010057533A1 (en) * 2008-11-21 2010-05-27 Arcelik Anonim Sirketi A cooling device
DE102010039574A1 (en) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance with interior lighting
TR201105174A2 (en) * 2011-05-27 2012-12-21 Bsh Ev Aletleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇@ A cooler.
DE102012202322A1 (en) * 2012-02-16 2013-08-22 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with indirect cooling chamber lighting
US8572808B2 (en) * 2012-02-23 2013-11-05 Sub-Zero, Inc. Controlled closure system for a hinge
DE102012221295A1 (en) * 2012-11-21 2014-05-22 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance with a cooling compartment
CN103236838A (en) * 2013-04-24 2013-08-07 合肥美的荣事达电冰箱有限公司 Door opening frequency counting system for refrigerator and refrigerator provided with same
EP2865975A4 (en) * 2013-08-27 2016-01-27 Hisense Ronshen Gd Refrig Co Refrigerator lighting device
CN105157305B (en) * 2015-09-16 2017-10-27 合肥美的电冰箱有限公司 Refrigerator

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JPS52154159A (en) * 1976-06-16 1977-12-21 Matsushita Refrig Co Door switch of refrigerator
JPH0578752B2 (en) * 1988-02-16 1993-10-29 Nippon Kentetsu Co Ltd
US5243504A (en) * 1992-07-29 1993-09-07 Sejzer Daniel A Sales promotion system and method for attracting consumer attention to each individual article being sold
US6102548A (en) * 1999-04-19 2000-08-15 Mantle; Kellie M. Lighting system for mailbox
JP3823680B2 (en) * 1999-04-21 2006-09-20 ウシオ電機株式会社 Power supply device for discharge lamp
US6376998B1 (en) * 1999-04-21 2002-04-23 Ushiodenki Kabushiki Kaisha Feeding device for discharge lamp
US6203167B1 (en) * 1999-06-07 2001-03-20 Christine Liu Drawer light fixture for those having vision difficulties
US6402338B1 (en) * 2001-04-05 2002-06-11 Mitzel Machining Inc. Enclosure illumination system
US6851820B2 (en) * 2002-06-26 2005-02-08 Weber-Stephen Products Company Barbecue grill light

Also Published As

Publication number Publication date
RU2382299C2 (en) 2010-02-20
US20070223210A1 (en) 2007-09-27
WO2005108889A1 (en) 2005-11-17
EP1745253A1 (en) 2007-01-24
CN1950656A (en) 2007-04-18
RU2006137814A (en) 2008-06-10
CN100561087C (en) 2009-11-18

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R012 Request for examination validly filed

Effective date: 20110404

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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20131203