CN104126101A - Refrigerator - Google Patents

Abstract

A refrigerator having: a main refrigerator body; a heat-insulated storage compartment; a compartment illumination device for illuminating the storage compartment; and a temperature sensor for sensing the temperature in the vicinity of the compartment illumination device; the compartment illumination device and the temperature sensor being installed in the inner box of the refrigerator and configured on the same substrate.

Description

Freezer

Technical field

The present invention relates to the illumination of the storeroom of freezer, relate to the Yi Jiandu of food and easness is installed, can be cut down the freezer of workload.In addition, the present invention relates in the illumination of storeroom of freezer illumination (luminosity) stability and utilize the freezer of taking in variation in this Detection of Stability case, specifically, relate to the situation of taking in and behaviour in service are used to its saturation capacity of light source detection, thereby detect and take in variation, can be according to the freezer of the change automatic electricity-saving of its output valve.

Background technology

In recent years, as an example of home-use freezer, near the temperature thermistor of the indoor temperature of the configuration detection storeroom light source of the lighting device that storeroom is thrown light on.Make an effort as follows: the accommodation space at the storeroom back side is installed light source and temperature thermistor simultaneously, improve the volumetric efficiency of freezer and cut down assembling operation amount etc.In addition, the freezer of light source and temperature thermistor being installed on same substrate is practical (for example,, with reference to patent documentation 1).

Figure 27 to Figure 31 represents existing freezer.

Figure 27, Figure 28 are exploded perspective view and the top views of lighting device 100.Lighting device 100 has base 101, LGP 102, substrate 103 and reflector plate 104.Base 101 consists of synthetic resin, and the incorporating section 101a that takes in substrate 103 is formed at one end of base 101.LGP 102 consists of transparent resin, at front surface, is formed with exit facet 102c, and side is formed with inclined plane 102b overleaf.

The LED103a as light source of the side that is disposed at LGP 102 is installed at substrate 103.The emergent light guiding LGP 102 of LED103a, in inclined plane 102b reflection, guides to the exit facet 102c of front surface.Utilize the emergent light of exit facet 102c to throwing light in refrigerating chamber.At LGP 102, in order to expand the opposed area with LED103a, be formed with in side the recess 102a of the front end insertion that makes LED103a.Reflector plate 104 consists of aluminium foil, by transparent adhesives, is adhered to LGP 102, and the light spilling in the offside reflection of LGP 102, guides to exit facet 102c.

Figure 29, Figure 30, Figure 31 represent top view, side view and the front view of substrate 103.LED103a is installed on a face of substrate 103, in identical faces, connector 103c is installed.Face at the LED103a opposition side with substrate 103 is provided with thermistor 103b.Connector 103c is connected with lead-in wire 105 (with reference to Figure 27) via connector 105a (with reference to Figure 27), to LED103a and thermistor 103b supply power.

A part of opening of incorporating section 101a, is communicated with refrigerating chamber, and the cold air of refrigerating chamber flows into, and utilizes thermistor 103b detected temperatures.According to the testing result of thermistor 103b, opening and closing air door (not shown) controls the temperature in refrigerating chamber.Therefore, at substrate 103, LED103a and thermistor 103b are installed, with few volume, carry out case intraoral illumination and temperature control, can realize the raising of volumetric efficiency.

Now, by LED103a is used as light source, can reduce caloric value.In addition, utilize the cold air of the refrigerating chamber that flow into incorporating section 101a, can cooling LED 103a.Thus, can prevent the reduction of the accuracy of detection of the thermistor 103b that the heating due to LED103a causes.

And thermistor 103b is installed on than LED103a more on the lower, and be installed on the face with LED103a opposition side.Thus, can further prevent the reduction of the accuracy of detection of the thermistor 103b that the heating due to LED103a causes.

But although adopt structure assembling operation amount as above to reduce, energy saving is not considered in existence yet, in addition owing to utilizing LGP etc. likely to increase components number yet.And so although the inside light that is disposed at storeroom due to light source can enter people's eyes, be to irradiate the back side for collecting article, its visibility does not improve.

Prior art document

Patent documentation

Patent documentation 1: TOHKEMY 2010-139078 communique

Summary of the invention

Freezer of the present invention has freezer main body, the heat insulation storeroom marking off, the case interior lighting device arranging for storeroom is thrown light on and for detection of near the temperature detecting part of temperature case interior lighting device.And case interior lighting device and temperature detecting part are formed in takes in shelf in the case of freezer and door is taken in the interior case between shelf, and is arranged on same substrate.

The present invention by irradiating the situation of taking in of the food of case inside before freezer, when improving visibility, reduce for case interior lighting device and temperature detecting part being arranged to the assembling operation load in the place ahead in case, also realize the security that improves the substrate periphery that is provided with case interior lighting device and temperature detecting part.

Freezer of the present invention not only can judge the position of the collecting article in receiving room, and can infer the whole amount of taking in, so can carry out temperature control according to receiving state, improves fresh-keeping property, prevents sub-cooled, thereby suppresses power consumption.

In addition, freezer of the present invention has freezer main body; The heat insulation storeroom marking off; Be arranged at the light source of the inside of storeroom; Near the temperature detecting part of the temperature with light source on same substrate, detection light source; Carry out the s operation control portion of calculation process with the testing result based on temperature detecting part.And s operation control portion makes the voltage variable that applies to light source according to the value of the detected temperatures of temperature detecting part, thereby makes luminosity certain.

Thus, can make the luminosity of affected light source for certain, so the deviation of the illumination that can suppress to open the door at every turn according to the temperature inside the box.

And the present invention has the optical sensor that detects the irradiation light irradiating from light source; Carry out the s operation control portion of calculation process with the testing result based on optical sensor.Thereby by light sensors, irradiate the state that distribution that light reflects the lightness in receiving room repeatedly at wall or the collecting article of receiving room reaches capacity, carry out the computing of s operation control portion.According to its operation result, infer the amount of taking in of collecting article, calculate and take in variation, the selected refrigerating mode that adapts to its state.If thermic load is imagined at least, take in when with low uncertainty, make compressor with low rotation running etc., realize energy-conservation.

Freezer of the present invention suppresses the change causing according to variations in temperature by the luminosity to light source, can guarantee illumination in certain case.And, due to can precision low well, infer the whole amount of taking in, can bring into play according to receiving state and carry out cooling control, improve fresh-keeping property, thereby prevent that sub-cooled from suppressing the so useful effect of power consumption.

Accompanying drawing explanation

Fig. 1 is the front view of the freezer of the 1st embodiment of the present invention.

Fig. 2 A is the 2A-2A sectional view of Fig. 1.

Fig. 2 B is that the master of the major part of Fig. 1 looks sectional view.

Fig. 3 is the front view of end face lighting device part of the freezer of the 1st embodiment of the present invention.

Fig. 4 is the top view of end face substrate of the freezer of the 1st embodiment of the present invention.

Fig. 5 is the control block diagram of the freezer of the 1st embodiment of the present invention.

Fig. 6 is the control flow chart that the receiving state of the freezer of the 1st embodiment of the present invention detects.

Fig. 7 is the control flow chart that the receiving state of another way of the freezer of the 1st embodiment of the present invention detects.

Fig. 8 is the control flow chart that the master data of the information of taking in of the freezer of the 1st embodiment of the present invention obtains.

Fig. 9 is that the freezer of the 1st embodiment of the present invention utilizes the receiving state that end face light source carries out to detect the key diagram moving.

Figure 10 is that the freezer of the 1st embodiment of the present invention utilizes the receiving state that end face light source carries out to detect performance plot.

Figure 11 is that the receiving state that the light source of the freezer utilization below of the 1st embodiment of the present invention carries out detects the key diagram moving.

Figure 12 is that the receiving state that the light source of the freezer utilization below of the 1st embodiment of the present invention carries out detects performance plot.

Figure 13 is that the receiving state after the corrected Calculation of freezer of the 1st embodiment of the present invention detects performance plot.

Figure 14 is the side cross-sectional, view of the freezer of the 2nd embodiment of the present invention.

Figure 15 is the key diagram of situation of the inside that is accommodated in the refrigerating chamber of the 2nd embodiment of the present invention.

Figure 16 A means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view.

Figure 16 B means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view.

Figure 17 A means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view.

Figure 17 B means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view.

Figure 18 represent to the sensor configuration example in the wind path of the freezer of the 2nd embodiment of the present invention cross-sectional top view.

Figure 19 is the side cross-sectional, view of the freezer of the 3rd embodiment of the present invention.

Figure 20 is the side cross-sectional, view of freezer of the another way of the 3rd embodiment of the present invention.

Figure 21 A is the control flow chart that the receiving state of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 B is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 C is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 D is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 E is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 F is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 G is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 22 is the control flow chart that partly opens the door and detect of the freezer of the 3rd embodiment of the present invention.

Figure 23 A is the control flow chart that excessive the depositing (Scold め The ぎ) of the freezer of the 3rd embodiment of the present invention detected.

Figure 23 B is the excessive control flow chart of depositing detection in the another way of freezer of the 3rd embodiment of the present invention.

Figure 24 is that the door of the freezer of the 3rd embodiment of the present invention is taken in the control flow chart that shelf is taken in detection.

Figure 25 is the illumination of receiving state test section and the performance plot of electric current of the freezer of the 4th embodiment of the present invention.

Figure 26 is the performance plot that the relation of the illumination of the rate of taking in of the freezer of the 4th embodiment of the present invention and receiving state test section is represented with the reflectivity of each chamber interior wall face.

Figure 27 means the exploded perspective view of the lighting device of existing freezer.

Figure 28 means the top view of the lighting device of existing freezer.

Figure 29 means the top view of substrate of the lighting device of existing freezer.

Figure 30 means the side view of substrate of the lighting device of existing freezer.

Figure 31 means the front view of substrate of the lighting device of existing freezer.

The specific embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.And, can't help this embodiment to limit the present invention.

(the 1st embodiment)

Below, based on Fig. 1 to Figure 13, embodiments of the present invention are described.

Fig. 1 is the front view of the freezer of the 1st embodiment of the present invention, and Fig. 2 A is the 2A-2A sectional view of Fig. 1, and Fig. 2 B is that the major part master of Fig. 1 looks sectional view.Fig. 3 is the detailed front view of end face lighting device part of the freezer of the 1st embodiment of the present invention, and Fig. 4 is the top view of end face substrate of the freezer of the 1st embodiment of the present invention, and Fig. 5 is the control block diagram of this freezer.

Fig. 6 is the control flow chart that the receiving state of the freezer of the 1st embodiment of the present invention detects, Fig. 7 is the control flow chart that the receiving state of the another way of this freezer detects, and Fig. 8 is the control flow chart that the master data of the information of taking in of this freezer obtains.Fig. 9 is that the 1st embodiment freezer of the present invention utilizes end face light source to carry out the key diagram that receiving state detects action, Figure 10 is that this freezer utilizes the receiving state that end face light source carries out to detect performance plot, and Figure 11 is that the receiving state that the light source of this freezer utilization below carries out detects the key diagram moving.Figure 12 is that the receiving state that the light source of the freezer utilization below of the 1st embodiment of the present invention carries out detects performance plot, and Figure 13 is that the receiving state after the corrected Calculation of this freezer detects performance plot.

In Fig. 1, freezer main body 11 be by the outer container that mainly uses steel plate, with resin formings such as ABS interior case and the heat insulating box that forms of the heat-barrier material that injects between outer container and interior case.

Freezer main body 11 is heat insulation is divided into a plurality of receiving rooms, at topmost, is provided with refrigerating chamber 12, in the lower, transverse of this refrigerating chamber 12, is set side by side with ice-making compartment 13 or switching chamber 14.Bottom in this ice-making compartment 13 and switching chamber 14 is provided with refrigerating chamber 15, at foot, disposes vegetable compartment 16.

Before each receiving room, in the front openings portion of freezer main body, form respectively and be useful on the insulated door of separating with extraneous air.Near the central portion of the refrigerating-chamber door 12a of the insulated door as refrigerating chamber 12, dispose display part 17, can carry out the temperature inside the box setting, ice making of each chamber and coolingly etc. rapidly set and show that the testing result of receiving state is, the operational situation of freezer etc.

In Fig. 2 A, Fig. 2 B, in refrigerating chamber 12, be provided with to arrange in a plurality of casees take in as the food of collecting article and take in shelf 18, on the face of the case inner side of refrigerating-chamber door 12a, be provided with door and take in shelf 19.In case, taking in shelf 18 and door takes in shelf 19 and consists of the high material of transmitance of glass, transparent light such as resin.In case, take in shelf 18 and door and take in the surface of shelf 19 and process the transmitance and the light that keep certain are spread, can regulate thus the distribution of the lightness in refrigerating chamber 12.

In refrigerating chamber 12, exist for to the illuminating LED 20 throwing light in case, improve the visibility as the food of taken in collecting article.Illuminating LED 20, before the door open sides in freezer, in than case, 1/2 of depth is more disposed at end face, left side wall and right side wall by reveal.A plurality of LED such as LED20f, 20j below the light source of this illuminating LED 20 is used end face LED20a, 20b, side LED20c, 20d, 20e, 20g, 20h, 20i and side.At side wall surface, by with side LED20c～20e and 20g～20i like this at longitudinal arrangement, can irradiate refrigerating chamber 12 integral body that short transverse is long without omitting.

At end face LED20a, the 20b of illuminating LED 20, comprise in the side LED20c～20j of LED below side, for illuminating LED unit, with LED, clip the mode of temperature thermistor, for example, between end face LED20a and end face LED20b, be provided with temperature thermistor 61a.At side, similarly, below side LED20e and side, between LED20f, be provided with temperature thermistor 61b, below side LED20i and side, between LED20j, form and have temperature thermistor 61c.This temperature thermistor 61a～61c, if consider installation property, slimming, it can be the thermistor of surface installation type, now, about end face, side LED20a～20e and 20g～20i and below, side LED20f, 20j, preferably the chip LED with surface installation type forms, automation simply, slimming.

As shown in Figure 3 and Figure 4, the part in the thermal wall of the outer container 66 mainly forming with steel plate and the interior case 67 forming with resin, the heat-barrier material such as filled polyurethane, vacuum heat insulation material 68 obtains betwixt end face is formed with recess.Illuminating LED 20 is formed in to be provided in and is arranged at the illuminating cover 64 of this recess and the substrate 62 between base 65.At substrate 62, connector 63 and end face LED20a, 20b are installed, temperature thermistor 61a is installed betwixt.Temperature thermistor 61a is installed on the substantial middle of end face LED20a, 20b.The simplification of distribution of substrate considered by connector 63, the installation quantity of the miniaturization of substrate area, substrate, is formed in the end of substrate 62.

And, in case below and than 1/2 of the depth direction in case, more by the position of reveal, be provided with as optical sensor key light sensor 21a, 21b and secondary optical sensor 21c.These optical sensors, use illuminance transducer in present embodiment, the sensor that to be generally the peak wavelength of take as maximum sensitivity be 500～600nm.In addition, the wavelength of peak sensitivity of optical sensor can be also other wavelength band, can determine according to emission wavelength of light source etc.

Refrigerating chamber 12, when left and right directions is divided into two regions, is disposed to left region by end face LED20a and key light sensor 21a, secondary optical sensor 21c, end face LED20b and key light sensor 21b are disposed to right region.In addition, receiving room, when the above-below direction painting style is two regions, is disposed to upper region by end face LED20a, 20b, side below LED20f, 20j and key light sensor 21a, 21b, secondary optical sensor 21c are disposed to lower area.Like this, at a plurality of area configurations LED and optical sensor.

This key light sensor 21a, 21b, thereby the irradiation light of measuring, calculate end face LED20a, 20b, side LED20f, 20j carries out the state that the distribution of the reflection of receiving room wall and reflection that collecting article causes, the lightness in decay receiving room reaches capacity repeatedly, infers receiving state.Except this principle, also by a plurality of area configurations LED and optical sensor, the configuration affects of collecting article can be subject to and precision detects receiving state well.

Utilize the detection of the object that optical sensor carries out, for example, be generally as photo interrupter, utilize because of cover the phenomenon of the extreme decay of light intensity come an object of digital detection existence method or with a plurality of sensor constructions, detect the mode existing of a plurality of objects.Such structure only can detect the having or not of collecting article that is limited to the place in receiving room, can not grasp the receiving state of receiving room integral body.But the structure of present embodiment can be grasped the whole receiving state in the such space of refrigerating chamber 12 with LED and the Sensor Analog Relay System of minority (analog).

In this system, the front of optical sensor is contained food and fills up, and follows the light level that can detect extremely to reduce, and the rate of change of light intensity reduces, so need complicated processing in the detection of receiving state.But, as shown in Figure 2 A, in refrigerating chamber 12, being contained thing fills, installation site as end face LED20a, 20b, side LED20c～20e, 20g～20i, side below LED20f, 20j and key light sensor 21a, 21b, exist and in case, take in shelf 18 and door is taken in the space alpha between shelf 19, the possibility that the front of optical sensor is filled up by food is low.

In addition, in refrigerating chamber 12, for the cryopreserved temperature not freezing, be lower limit, be conventionally set as common 1 ℃～5 ℃, in the vegetable compartment 16 of foot, be made as 2 ℃～7 ℃ of the Temperature Setting equal or slightly high with refrigerating chamber 12.In addition, refrigerating chamber 15 is set in cryogenic temperature territory, for freezing preservation is set as-22 ℃～-15 ℃ conventionally, in order to improve the raising of freezing preservation state, for example, is set in the low temperature of-30 ℃ ,-25 ℃.

In ice-making compartment 13, use the water of sending from the water storage tank in refrigerating chamber 12, the automatic ice maker ice making with being arranged at indoor top, is stored in the ice storage container that is disposed at indoor bottom.

Switching chamber 14, except being set in 1 ℃～5 ℃ refrigerations, be set in the vegetables of 2 ℃～7 ℃, be conventionally set in the freezing temperature field of-22 ℃～-15 ℃, can switch to from predefined temperature field between refrigerated storage temperature territory to cryogenic temperature territory.Switching chamber 14 is the receiving rooms that possess unconnected gate that are arranged side by side with ice-making compartment 13, mostly possesses the door of drawer type.

In addition, in present embodiment, using switching chamber 14 as comprising until refrigerate and the receiving room of freezing temperature field, but also can refrigerate give refrigerating chamber 12 and vegetable compartment 16, freezingly give refrigerating chamber 15, as the special receiving room only switching in the said temperature territory of refrigeration and freezing centre.In addition, be for example accompanied by, at specific temperature field, the Requirement Increases of frozen food in recent years, also can be used as and be fixed as freezing receiving room.

Then, the controller chassis structure of key diagram 5.

In order to detect the variation of freezer main body and surrounding enviroment thereof, the detection signal of the door open-close detection sensor 3 for detection of door on-off action is input to s operation control portion 1.In addition, the detection signal of the temperature sensor consisting of various temperature thermistors 61 for detection of each the temperature inside the box, LED portion temperature, outside air temperature, kind of refrigeration cycle temperature is input to s operation control portion 1.In addition, the detection signal for detection of taking in the optical sensor 21 consisting of key light sensor 21a, 21b and secondary optical sensor 21c of variation is input to s operation control portion 1.

When various detection signals are input to s operation control portion 1, in memory 2, store data, carry out computing, determine and to comprise the illuminating LED 20 of end face LED20a, 20b, below, side LED20f, 20j, the luminous action of blue led 22a, 22b that reflectivity correction is used.In addition, s operation control portion 1 determines the action of the cooling system 35 that comprises the heater 33 that compensates, defrosts for compressor 30, cooling fan 31, air quantity damper 32 and the temperature inside the box.Then, s operation control portion 1 exports its actuating signal by timer 4 grades in good time, makes each functional part action.

For the freezer forming as mentioned above, below, to its action, effect, use Fig. 6 to the control flow chart of Figure 13 and sectional view, key diagram, describe the receiving state that utilizes end face LED20a, 20b, side below LED20f and key light sensor 21a to carry out in detail and detect and move.

In present embodiment, light successively end face LED20a, 20b and below, side LED20f in illuminating LED 20,20j, now, is used key light sensor 21a and secondary optical sensor 21c in optical sensor 21 to detect receiving state.

In addition, in the time of need to improving the accuracy of detection of receiving state, can increase and use as the LED light source of side LED20c～20f.In addition, also can increase and use as the optical sensor of key light sensor 21b.

Because general refrigerating chamber 12 is longer in short transverse, so mainly record the test example of the receiving state when above-below direction is divided into two regions by refrigerating chamber 12.

In Fig. 6, while entering receiving state testing process (step S201), utilization is taken in detection temperature thermistor 61a used, for example end face Lighting Division (one of temperature sensor 61) and is detected its peripheral temperature (step S202), the value that applies voltage or Duty (step S203) when the LED while determining that by computing door opens and closes lights.Then,, while utilizing a door open-close detection sensor 3 refrigerating-chamber door 12a to be detected to open (step S204), apply magnitude of voltage or the Duty of definite LED in step S203 of usining leads as case intraoral illumination and makes LED light (step S205).Thus, can change the photometric bias that suppresses LED according to the temperature inside the box, make to open the interior uniform-illumination of case of door at every turn.

This function not only can be taken in detection, also can suppress to open and close, food puts into that caused storage room temp rises, the light varience of LED, can provide illumination in stable case to user.

Then, if door detected, close (step S206), extinguish LED (step S207), wait for that the stipulated time is through (step S208).After stipulated time, move to step S209, again measure LED peripheral temperature, in step S210, determine voltage or the Duty that LED is applied.The detection that voltage or Duty value start the situation of taking in that applies of determining with this is moved, and obtains master data (step S211).

Here, record the reason of in step S208, the stipulated time being carried out to timing.

On the one hand, form when taking in shelf 18, door in the case of low temperature and taking in extraneous air that shelf 19 and illuminating cover 64 etc. open and close due to door the high humility flowing into and flow in case, so rise few because cooling before parts self have thermal capacity temperature, even if its surface is small, also dewfall likely, consider transmitance, reflectivity, absorptivity, refraction angle change can affect the detection of receiving state, so detect after dewfall elimination from the stipulated time.

In addition, on the one hand, when refrigerating-chamber door 12a opens, as illumination, light LED, thereby consider because its heating changes on LED element generation temperature impact luminosity, detection to receiving state exerts an influence, so the rising of the temperature of LED detects after eliminating from the stipulated time.In addition, as the stable result of the luminosity that makes LED, in the present embodiment, use the temperature sensor 61 being formed by temperature thermistor to detect the temperature of LED periphery, make thus the voltage change that LED is applied, or Duty is changed, thus make the LED of certain luminosity luminous, improve thus accuracy of detection.

In addition, as other structure, after closing cold room door 12a, also temporarily light LED and make on the contrary its heating, at the appointed time after the temperature of LED rise reach capacity and form certain after, start to detect, the luminosity of LED is stable.

In addition, as shown in Figure 7, another way as present embodiment, also can will measure the resulting value of LED peripheral temperature (step S209) as basis, measure the master data (step S211) of receiving state, for the impact of this value computing LED peripheral temperature, according to this operation result, carry out temperature correction (step S221), the judgement amount of taking in.

Then use Fig. 8 to Figure 12 that master data is obtained and described.

Start receiving state and detect action, start to light the light source (step S231) being disposed at as end face LED20a, the 20b of the end face wall in the upper region of freezer most.For example, as shown in Figure 9, while taking in the food of taking on shelf 18 as collecting article 23a in case, (following from the light 24a of end face LED20a output, in Fig. 9, with arrow, represent the composition of light, dotted line represents optical attenuation), the food that is used as collecting article 23a reflects, absorbs and decays, and the direction to other as shown in light 24b, 24c spreads.Light 24b, 24c are further at the wall of refrigerating chamber 12, other food (not shown) interreflection.In addition, the light 24d that takes in the collecting article 23b reflection of shelf 19 at door also decays, and spreads, further at the wall of refrigerating chamber 12, other food (not shown) interreflection as shown in light 24e to other direction.Like this, after interreflection, the distribution of the lightness in refrigerating chamber 12 is saturated, stable.

In addition, generally speaking, the irradiating angle that the irradiation light of LED has a regulation carries out luminous, so a part for the composition of the light that the only LED representing with arrow in Fig. 9 emits.Below, to the description of light, be also same.

Due to end face LED20a, 20b downwards, key light sensor 21a, 21b be to horizontal direction, configuration opposed to each other, so the composition of most light is not directly incident on sensor, is configured between the reflection of wall, collecting article respectively.In addition key light sensor 21a, the 21b configuration of also can staggering from the optical axis of end face LED20a, 20b as light source.The directive property that is LED is high, so the position of preferably directly not injecting with the light of end face LED20a, 20b or the mode of not injecting configure.

Figure 10 is the example that the receiving state that carries out of key light sensor 21a now detects characteristic, and the known amount of taking in increases and illumination reduces.Wherein, only light end face LED20a, 20b, between maximum and minimum of a value, have error, the modification method of this error is narrated in the back.The illuminance information recording is recorded in memory 2 (step S232) as detecting data A.

In addition,, using the longitudinal axis of the figure of Figure 10 as " illumination ", as take while there is no collecting article as the relative value of benchmark " relative illumination " or " illumination attenuation rate " etc., the photometric bias having as initial characteristic with LED etc. are easily corresponding.While in addition, also can be used as there is no collecting article as " the illumination attenuation " of benchmark.Below, also identical about the content of " illumination ".

Then, light the light source (step S233) being disposed at as below, the side LED20f of the wall of the below, side of the lower area of freezer.For example as shown in figure 11, while taking in the food of taking on shelf 18 as collecting article 23c in case, the light 24f of below LED20f output is (following from the side, in Figure 11, with arrow, represent the composition of light, dotted line represents optical attenuation), the food that is used as collecting article 23c reflects, absorbs and decays, and the direction to other as shown in light 24g spreads.Light 24g is further at the wall of refrigerating chamber 12, other food (not shown) interreflection.In addition, at the light 24h of collecting article 23d reflection, also decay, as shown in light 24i, 24j, to other direction, spread, further at the wall of refrigerating chamber 12, other food (not shown) interreflection.Like this, after interreflection, the distribution of the lightness in refrigerating chamber 12 is saturated, stable.

While lighting below, side LED20f, with key light sensor 21a, detect, with not opposed combination, detect respectively, so the composition of most light is not directly incident on sensor, be configured between the reflection of wall, collecting article.That is, detect the catoptrical light that indirectly irradiates that is included in the collecting article in receiving room.

Figure 12 is that the receiving state that key light sensor 21a carries out of utilizing now detects an example of characteristic, and the known amount of taking in increases and illumination reduces.Wherein, only light below, side LED20f, between maximum and minimum of a value, have error, the modification method of this error is narrated in the back.The illuminance information recording is recorded in memory 2 (step S234) as detecting data B.Using what detect data A and detect data B, on average as data C, be recorded in memory 2 (step S235), finish obtain (the step S236) of master data.

In Figure 13, represent that according to foregoing, according to Fig. 6, in s operation control portion 1, carrying out master data obtains (step S211), barrier correction (step S212), reverberation correction (step S213) amount of taking in detection characteristic (after revising) afterwards.The error of revised maximum (a) and revised minimum of a value (b) is minimum, and known can precision simulation well inferred receiving state (step S214).

In the inferring of receiving state, threshold value P, Q, R, S are set as shown in figure 13, the amount of taking in grade is designated as to the specification with 1～5 5 ranks judgements.While being judged as grade 3, threshold value R～S while being judged as grade 2, threshold value Q～R while being judged as grade 1, threshold value P～Q when particularly, threshold value P is above, be judged as class 4, threshold value S and when following, be judged as class 5.

In addition, for example, when being judged to be the amount of taking in and increasing, if the amount of taking in before changing is grade 3, only illumination change is judged to be and moves to class 4 when the difference of " threshold value Q-threshold value R " is above, and situation is in addition left grade 3.Thus, even because the detection error of a few percent occurs for external noise etc., also can prevent the error detection of the variation of receiving state.While being judged to be the minimizing of the amount of taking in, also carry out in the same way.

In addition, the interval of threshold value P～S of Figure 13 is wide when the amount of taking in is few, and narrow in many.This is when the amount of taking in is fewer, to tilt greatlyr because the amount of taking in detects characteristic (after revising), tilts less when the amount of taking in is more, and institute is so that 1～5 interval equalization of the amount of taking in grade.

Certainly, also can not be divided into rank as above, fully simulation judgement.

After inferring receiving state, according to the variation of the amount of taking in or the amount of taking in or reception position etc., control the cooling systems such as compressor 30, cooling fan 31, air quantity damper 32, heater 33, change to the suitableeest cooling running.

In addition, make the configuration relation of above-mentioned LED and optical sensor contrary, this receiving state detection mode is also set up.

In addition, light successively LED, during detecting receiving state, make the lamp of display part 17 light or extinguish etc., user is reported to detected status.And, after detecting receiving state, at display part 17, show testing result, report to user.

As mentioned above, in present embodiment, have and comprise the end face LED20a, the 20b that are provided with for refrigerating chamber 12 is thrown light on and for detection of near the temperature sensor 61 of the temperature thermistor of temperature end face LED20a, 20b, these are arranged at the interior case of freezer and are formed on same substrate as component parts, thus, from end face, irradiate light downwards, thereby easily see the food of taking in shelf that is formed in bottom.In addition, when specific low temperature chamber is extracted out, be very easy to reliably incorporating section be irradiated from top, so be very easy to see food, in addition, can cut down components number, easily blocking.In addition, by precision detect well near LED, the temperature of substrate atmosphere gas, adjust and apply voltage thus, can suppress illumination change, luminosity is necessarily changed, in addition, can provide at an easy rate product, and alleviate working load, improve substrate security around.

In addition, in present embodiment, for the lighting device that refrigerating chamber 12 is thrown light on, adopt end face LED20a, 20b, but also can be for being arranged at side LED20c～20e, 20g～20i and below, side LE20f, the 20j of side.Now, below side LED20e and side, between LED20f, form temperature thermistor 61b or the 61c that side LED uses, the visibility effect of certain food of taking in from the side shelf of also can being improved.

In addition, by thering is end face LED20a, the 20b of the inside that is arranged at refrigerating chamber 12 and key light sensor 21a, the 21b that the optical sensor of light is irradiated in below, side LED20f, 20j, detection, illumination attenuation based in key light sensor 21a, 21b is inferred the receiving state of collecting article, the deviation of initial characteristic as the LED of light source etc. can be tackled, the whole receiving state in refrigerating chamber 12 can be inferred accurately.In addition, the irradiation light of light source repeatedly reflects in receiving room, spreads all over integral body in case, injects, so can detect receiving state with the few easy structure of component count to optical sensor.In addition, key light sensor 21a, 21b can only be disposed at a side.Thus, can further realize cost degradation.

In addition, the illumination of illumination attenuation in key light sensor 21a, 21b based in receiving state is inferred the receiving state of collecting article with respect to the illumination that there is no the state of collecting article in receiving room, deviation that not only can the corresponding LED as light source, also can tackle the individual deviation in the receiving room of freezer, can further improve collecting article receiving state infer precision.

In addition, the illumination attenuation in key light sensor 21a, 21b, detects the catoptrical light that indirectly irradiates of the collecting article in being included in receiving room, can using the receiving state of collecting article as illumination attenuation easily, precision infers well.

In addition, by key light sensor 21a, 21b, from the configuration of staggering of the optical axis of light source, optical sensor does not receive the direct light from light source, thus can using the receiving state of collecting article as illumination attenuation easily, precision infers well.

In addition, by the temperature sensor 61 consisting of temperature thermistor is set in illuminating LED 20, suitably measure near the temperature of the portion of LED, thus, the deviation of the light source that can suppress to be caused by temperature, thus can using the receiving state of collecting article as illumination attenuation easily precision infer well.

In addition, key light sensor 21a, 21b and light source in receiving room not opposed or opposed to each other configuration form, thus, can prevent reliably that optical sensor from receiving the direct light from light source, can using the receiving state of collecting article as illumination attenuation easily precision infer well.

In addition, by possessing the correction portion that the illumination attenuation in key light sensor 21a, 21b is revised according to receiving state, the deviating cause that the bias of the collecting article in can absorbing in receiving room causes, can improve the precision of inferring of the amount of taking in that the receiving state of collecting article causes.

In addition, by optical sensor 21 being disposed to more below of light source, the impact of the dewfall that inflow that optical sensor 21 is subject to the extraneous air that opens and closes due to door causes can be reduced, the receiving state of collecting article can be the illumination attenuation precision based in optical sensor 21 inferred well.

In addition, illuminating LED 20 and optical sensor 21 be arranged at refrigerating chamber 12 than the center of depth direction more by refrigerating-chamber door 12a side, so can detect reliably near the receiving state of the food entrance that is easily subject to the impact that extraneous air that a switching causes flows into.

In addition, illuminating LED 20 and optical sensor 21 are arranged in the case that refrigerating chamber 12 possesses and take between the leading section and refrigerating-chamber door 12a of shelf 18, so taking in the space alpha of above-below direction of the front end of shelf 18 in refrigerating-chamber door 12a and case, to be contained the possibility that thing covers low, guarantee the stable light path from the light of light source, and the illumination attenuation in the optical sensor can the existence based on taking in the collecting article in shelf in insulated door, case causing comes precision to infer well the receiving state of collecting article.

In addition, due to refrigerating chamber 12 is divided into a plurality of regions, can not be subject to the bias of collecting article to affect ground precision and carry out well the detection of receiving state.

In addition, a part for the light source using during receiving state is detected is also used as illuminating LED 20, thus new light source need not be set, can be with easy structure detection receiving state.

(the 2nd embodiment)

Below, based on Figure 14 to Figure 18, the 2nd embodiment of the present invention is described.In addition, during with the same structure of the 1st embodiment, use identical mark, description thereof is omitted.

Figure 14 is the side cross-sectional, view of the freezer of the 2nd embodiment of the present invention, Figure 15 is the key diagram of the situation of taking in the inside of the refrigerating chamber of the 2nd embodiment of the present invention, Figure 16 A represents that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view, and Figure 16 B means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine cross-sectional top view.Figure 17 A means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine side cross-sectional, view, Figure 17 B means that the sensor of the freezer of the 2nd embodiment of the present invention configures routine side cross-sectional, view, and Figure 18 means to the sensor in the wind path of the freezer of the 2nd embodiment of the present invention and configures routine cross-sectional top view.

In present embodiment, the collocation method of various optical sensors in the detection of the main illuminating LED 20 that uses side is described.

About the position relationship of LED and optical sensor, the light of side LED20c, the 20d irradiating from case inside door side direction depth direction, 20e and below, side LED20f, in case Nell wall, food reflection, spreads all over integral body in case and incides end face optical sensor 21d, 21e.Therefore, the luminous luminosity that end face optical sensor 21d is disposed at side LED20c, 20d, 20e and below, side LED20f is the outside of more than 50% illumination angle β, makes the light of side LED20c, 20d, 20e and below, side LED20f not be directly incident on optical sensor.

In addition, temperature sensor 61 has in formation on the same substrate of LED20f below side LED20c, 20d, 20e and side and forms, and prevents the illumination change that variations in temperature causes.

In addition, whole for light is spreaded all in case, expectation, when light the inside reflection and detecting while returning in case reveal in case, is more leaned on the position of reveal so end face optical sensor 21d is arranged at than 1/2 of depth in case.Wherein, end face optical sensor 21e is that to end face optical sensor, 21d plays supplementary function setting for receiving state inboard in detection case more accurately, so be disposed in the incidence angle of inboard in case and side LED20c.

And when refrigerating-chamber door 12a opens and closes, extraneous air flow in case, the temperature inside the box rises a little, and near food door is easily subject to this impact.Therefore, be necessary to detect more accurately the receiving state of the food of reveal, so it is high at reveal, the effect of optical sensor to be set.

In addition, when structural design, should consider with LED light source, optical sensor not to be set opposed to each other as far as possible, make when refrigerating-chamber door 12a side can not arrange optical sensor, do not meet while putting into these conditions such as optical sensor in the illumination angle at LED light source, the irradiation light of LED is not directly incident on optical sensor.

In addition, as shown in figure 15, when the food that in end face optical sensor 21d, 21e, the sensor of a side is used as collecting article 23h clogs, also can utilize the sensor of opposite side to detect receiving state.

More than illustrated by end face optical sensor 21d be arranged at receiving room than depth direction 1/2 more by the end face of reveal, end face optical sensor 21e is arranged to the result of inboard end face, but, for example, as shown in Figure 16 A, also optical sensor 21f can be arranged to 1/2 reveal more keeping left of the horizontal cross direction of ratio of receiving room, and optical sensor 21g be arranged to the reveal of more keeping right than 1/2 of case internal transverse width.

In addition, as shown in Figure 16 B, optical sensor 21h can be arranged to door, and optical sensor 21i is arranged to the inboard of more keeping right than 1/2 of case internal transverse width.Thus, the food receiving state of left and right not only can be detected in detail, and the food receiving state of the inside, front can be detected in detail.And, by optical sensor 21h is arranged to door, can be configured to see in case whole to depth direction.In order to obtain same effect, to depth direction, optical sensor is set, also can optical sensor be set at chamber interior wall face.

In addition, as shown in Figure 17 A, optical sensor 21j can be arranged to top in receiving room and at reveal, optical sensor 21k be arranged to bottom in receiving room and at reveal.Thus, can utilize optical sensor 21j to detect than the light quantity of 1/2 of case inner height more top accommodation space, utilize optical sensor 21k to detect than the light quantity of 1/2 accommodation space more on the lower of case inner height.

Generally speaking, owing to having up and down an optical sensor what compare the longest refrigerating chamber of height dimension with other receiving room, so can at length detect food receiving state.

In addition, as shown in Figure 17 B, optical sensor 21m can be arranged to top in receiving room and at reveal, optical sensor 21n be arranged to bottom in receiving room and in inboard.Thus, by detecting the place ahead of accommodation space and the accommodation space of upside with optical sensor 21m, with optical sensor 21n, detect the rear of accommodation space and the accommodation space of downside, not only can detect the food receiving state of above-below direction, also can at length detect the food receiving state of the inside, front.

In addition, as shown in figure 18, except the optical sensor that the reveal in case possesses, optical sensor 21p, 21q can also be arranged at for sending in refrigerating chamber 12 in the cooling air duct 25 of cold air.Now, light incides optical sensor 21p, 21q by outlet 26, and cooling air duct 25 is to the outlet 26 of receiving room opening reliably, so optical sensor is not clogged by food, can guarantee into light path.Just in case the luminosity that is clogged the time by food due to outlet 26 reduces, so can detect to the cold air air-supply Efficiency Decreasing in refrigerating chamber 12.

In addition, although diagram not, also can be near optical sensor 21p, 21q while set temperature sensor.Also can predict and take in variation according to variations in temperature thus, improve precision.

In addition, not only, at the outlet 26 of wind path, also optical sensor can be set near suction inlet, same with outlet, can substantially there is no barrier and detect light, in addition, even in the situation that being clogged by food, its luminosity reduces, and can detect cold air air-supply Efficiency Decreasing.In these cases, particularly, in the situation that extremely clogging, can utilize the portion of reporting that is positioned at display part 17 to inform user.

Easy detection in addition, so far, recorded the mode of using two optical sensors, but the not restriction of the usage quantity of optical sensor can be set to a position in order to suppress the use amount of material, in order also can to arrange a plurality of.Temperature sensor 61 too, can be arranged on a position, also can be arranged on a plurality of positions.Thus, can carry out meticulousr detection, so can improve the accuracy of detection of taking in variation, load variations.In addition, the configuration of a plurality of sensors is also not limited to above-mentioned pattern, when freezer is divided into two regions, must in two regions, configure light source or optical sensor.

In addition, in order to detect in more detail, can, with driving optical sensor or LED such as electromechanical actuators, angle freely be changed.

In addition, even the configuration relation of above-mentioned LED and optical sensor is contrary, this receiving state detection mode is also set up.

As mentioned above, in present embodiment, in the refrigerating chamber 12 of being divided by thermal wall and insulated door, as the receiving state test section of differentiating receiving state, be provided with side LED20c～20e, 20g～20i and below, side LED20f, 20j, key light sensor 21a, 21b, secondary optical sensor 21c and optical sensor 21d～21q.Particularly by optical sensor being arranged to the center of the ratio depth of refrigerating chamber 12, more lean on reveal, can carry out cooling control, the food temperature that makes to be subject to the impact of receiving state is suitable temperature, so can improve fresh-keeping property, and, can be by preventing that " sub-cooled " suppresses power consumption.In addition, the center of ratio depth by receiving state test section being arranged to receiving room is more by reveal, can detect exactly the receiving state that is easily subject to opening and closing due to door near the food entrance of the impact that the extraneous air that causes flows into, and keeps proper temperature.In addition, for example, the in the situation that of refrigerating chamber, owing to taking in shelf in case inner side and reveal is taken in Existential Space between shelf, so can prevent that receiving state test section is contained food and clogs.

In addition, if optical sensor is arranged to the door of refrigerating chamber 12, can optical sensor be set so that see in case whole from reveal depth direction in case.

In addition, when refrigerating chamber 12 is divided into two regions at the center of depth in front and back, if optical sensor is set at regional, the receiving state of inboard food in detection case exactly.

In addition, when refrigerating chamber 12 Heng Kuan centers are divided into two regions in left and right, if optical sensor is set at regional, take in the differentiation grow of bias etc. of the left and right of food.

In addition, by refrigerating chamber 12 at the center of height when being divided into up and down two regions, if optical sensor is set at regional, in the longest refrigerating chamber of general height dimension, by at upside and downside configuration optical sensor, whole receiving state in detection case exactly.

In addition, when the luminous luminosity of LED is the arranged outside optical sensor of more than 50% range of exposures, the irradiation light of LED light source is not directly incident on optical sensor, and be contained food reflection or cover after incide optical sensor, so that the detection of receiving state becomes is easy.

In addition, optical sensor is arranged at for receiving room being sent into the cooling air duct 25 of cold air when interior, cooling air duct 25, to the outlet 26 of receiving room opening reliably, so optical sensor is not clogged by food, can be guaranteed into light path.Just in case the luminosity that outlet is clogged the time by food reduces, so can detect to the cold air air-supply Efficiency Decreasing in refrigerating chamber 12.

In addition,, by temperature thermistor and the optical sensor being arranged at for receiving room being sent in the cooling air duct 25 of cold air are formed in to same substrate, further improve the precision of taking in variation.

In addition, setting can make LED, optical sensor towards variable angle changing unit, in wide receiving room, also can confirm until the receiving state in the corner in case.

(the 3rd embodiment)

The freezer of the 3rd embodiment of the present invention is described based on Figure 19 to Figure 24 below.In addition, when with the 1st embodiment and the same structure of the 2nd embodiment 2, use identical mark, description thereof is omitted.

Figure 19 is the side cross-sectional, view of the freezer of the 3rd embodiment of the present invention, and Figure 20 is the side cross-sectional, view of freezer of the another way of the 3rd embodiment of the present invention.

Figure 21 A is the control flow chart that the receiving state of the freezer of the 3rd embodiment of the present invention detects, Figure 21 B is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects, Figure 21 C is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects, and Figure 21 D is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 21 E is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects, Figure 21 F is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects, and Figure 21 G is the control flow chart that the receiving state of another way of the freezer of the 3rd embodiment of the present invention detects.

Figure 22 is the control flow chart that partly opens the door and detect of the freezer of the 3rd embodiment of the present invention, Figure 23 A is the excessive control flow chart of depositing detection of the freezer of the 3rd embodiment of the present invention, Figure 23 B is the excessive control flow chart of depositing detection of another way of the freezer of the 3rd embodiment of the present invention, and Figure 24 is that the door of the freezer of the 3rd embodiment of the present invention is taken in the control flow chart that shelf is taken in detection.

In Figure 19, in refrigerating chamber 12, be provided with accepting rack 18 in a plurality of casees so that can arrange the food of taking in as collecting article, face inside the case of refrigerating-chamber door 12a is provided with an accepting rack 19, and these consist of the high material of the transmitance of the light such as glass, transparent resin.In case, take in shelf 18 and door and take in the surface of shelf 19 and process the transmitance and the light that keep certain are spread, can regulate thus the distribution of the lightness in refrigerating chamber 12.

In refrigerating chamber 12, exist for to the illuminating LED 20 throwing light in case, improve the visibility as the food of taken in collecting article.Illuminating LED 20, before the door open sides in freezer, in than case, 1/2 of depth more by refrigerating-chamber door 12a side, is disposed at end face, left side wall and right side wall.In the light source of this illuminating LED 20, use a plurality of LED such as end face LED (not shown) and side LED20c, 20d, 20e, 20f and 20g, at side wall surface, mode with side LED20c～20g is arranged at longitudinal direction, thus, can irradiate refrigerating chamber 12 integral body that short transverse is long without omitting.

In the end face LED of illuminating LED 20, side LED20c～20g, with LED, clip the mode of the temperature sensor 61 being formed by temperature thermistor, for example, between end face LED20a and end face LED20b, be provided with temperature thermistor 61a.This temperature thermistor 61a, if consider installation property, slimming, can be the thermistor of surface installation type, and in addition, for end face and side LED20a～20g, also the preferred chip LED with surface installation type forms, automation simply, slimming.

In the inside of refrigerating chamber 12, form and have the refrigerating chamber back side cover 70 that uses cooling fan 31 that the cold air being generated by cooler (not shown) is carried in right amount, shunted to refrigerating chamber 12 and each shelf.At the inner box side of refrigerating chamber back side cover 70, there is the wind path of discharge 72 and suck wind path 74, in storeroom side, have for storeroom being discharged to the outlet 73 of cold air and for returning to the suction inlet 75 that sucks wind path.In addition, near sucking a part or the suction inlet in storeroom 75 for wind path 74, form and return to air themperature thermistor 71.

In addition, as another way, as shown in figure 20, for example, even if it is fully loaded and clog near the outlet 73 of the refrigerating chamber back side cover 70 that is positioned at the inside to take in shelf 18 food in case, so that arriving the door of refrigerating chamber 12, cold air takes in interior case and the end face cover 77 that the mode of shelf 19 forms storeroom end face, before the door open sides in freezer, in than case, 1/2 of depth more by reveal, forms and has the end face wind path 79 with end face outlet 76.And the air quantity adjustment part 78 that is configured for switching wind path between end face wind path 79 and the outlet 73 of existing refrigerating chamber back side cover 70, discharges by cold air outlet 73 or the end face outlet 76 that main flow switches to the inside, carries out efficiently cooling.

In addition, the wind path of shelf 19 is guaranteed to take in to door in air quantity adjustment part 78, for example, can be divided into two discharging wind path, is arranged at refrigerating chamber bottom, divides wind path and forms.

For the refrigerating chamber forming as mentioned above, the control flow chart of Figure 21～Figure 24 of take illustrates its action, effect as main body.

In Figure 21 A, in step S251, enter and take in condition detection flow process, in order to detect the taking-up of putting into of food, monitor the action of door open-close detection sensor 3, in step S252, detecting gate open-close detection sensor 3 is closed and is moved to step S253, confirms through stipulated time Δ t (s).Thus, the heat of the food of putting into exerts an influence to storeroom, particularly due to the effect of buoyancy, than the high temperature of air after the turning cold of storeroom, has influence on storeroom top.Then, in step S254, read the temperature T u of the temperature thermistor 61a that end face LED uses, for example, if higher than the fiducial temperature Ts1 predetermining (, 10 ℃), be judged as due to food and put into and make to take in increase, move to step S255, improve cooling capacity.Particularly, move to step S256, the rotating speed that carries out compressor improves, the rotating speed of fan improves, and improves amount of cooling water.In addition, according to circumstances, although do not illustrate, when possessing 2 limiting mechanisms, can be switched to the many limiting mechanisms of refrigerant circulation quantitative change.In addition, when possessing refrigerating chamber air door and refrigerating chamber air door 2, can close refrigerating chamber air door or reduce air quantity, with refrigerating chamber 12, attaching most importance to and carry out cooling running.

After this, in step S257, for example, if the detected temperatures of the temperature thermistor 61a that end face LED uses is Ts2 following (6 ℃), return to common cooling running (step S258).

In addition, step S252 is a door open-close detection sensor 3, and what also can take LED extinguishes as starting point, stops the voltage that applies to LED.In addition, in step S257, set point of temperature is used for returning cooling judgement conventionally, but also can be for example as shown in Figure 21 B, by cooling end judgement as step S261, if the detected temperatures Tr that returns to air themperature thermistor 71 lower than the fiducial temperature Ts3 predetermining, be judged as return conventionally cooling, in addition, by the temperature thermistor 61a also using with end face LED, improve precision.In addition, also can realize certain hour amount of cooling water and improve, or until compressor stop.These values can adjust be set and variable according to external air temperature thermistor, temperature.

Thus, can use the temperature thermistor 61a that end face LED uses to detect the input thermic load to storeroom, the cooling food of putting into, so relax deteriorated that temperature rises and causes, improves fresh-keeping property quickly.

In addition, as shown in Figure 21 C, also can be by the judgement of taking in variation as the record of step S271, with the LED shown in Fig. 8 and optical sensor 21, carry out, then in step S273 after stipulated time Δ t (s), the temperature thermistor 61a using with end face LED in step S254, return to air themperature thermistor 71 and judge, carry out the judgement of cooling capacity raising.

Wherein, to take in and change while controlling as emphasis, as shown in Figure 21 D, in step S292, to take in recruitment be regulation+M% is when above, in order to improve at once cooling capacity, carry out rotating speed raising, rotation speed of the fan raising of compressor etc., if lower than+M%, move to step S273, the temperature thermistor 61a further using with end face LED judges.

And, in formation, have in the refrigerating chamber 12 of the wind path that can adjust the inside discharge and end face discharge as shown in figure 20, as shown in Figure 21 E, the temperature thermistor 61a using according to end face LED switches wind path with the temperature detection of returning to air themperature thermistor 71.Particularly, in step S281, the detected temperatures Tu of the temperature thermistor 61a that end face LED uses, is judged as and needs the top of refrigerating chamber 12 or door to take in the cooling of shelf 19 sides for example, during lower than fiducial temperature Ts4 (4 ℃) higher than the fiducial temperature Ts1 predetermining and the detected temperatures Tr that returns to air themperature thermistor 71.Based on this judgement, the air quantity adjustment part 78 of opening air door, electronic shield (shutter) etc. in step S282, is used end face wind path 79 to carry out cooling, then passes through step S256 by increase amount of cooling water such as compressor rotary speed raisings.In step S257, if the detected temperatures Tu of the temperature thermistor 61a that end face LED uses is lower than set point of temperature Ts2, close air quantity adjustment part 78, stop using the cooling of end face wind path, move to common cooling running (step S258).

In addition,, as shown in Figure 21 F, Figure 21 G, whether it is necessary or not (step S254) from end face wind path cooling also to can be used together temperature thermistor 61a judgement that optical sensor 21, end face LED use.

On the other hand, in this structure, as shown in the control flow chart of Figure 22, even if door open-close detection sensor 3 breaks down, also can detect partly and open the door, the product that reliability is higher can be provided.Below, action is described.

In step S302, door open-close detection sensor 3 detects and closes the door, and detects through the output of Δ t (s) confirmation illuminating LED 20 and close (step S304) in step S303.Thus, conventionally in refrigerating chamber 12, there is no luminous structure, and, with refrigerating-chamber door 12a, liner (sealing gasket), divide refrigerating chamber, so exterior light does not enter yet, the basic luminance should be zero, the detection of optical sensor 21 should be also zero.Therefore, consider the deviation of optical sensor 21, in step S305, optical sensor 21 detects as more than extremely approaching zero Lm, and during this state continuance is certain, light enters from the gap of door and main body, detects.; although the state of door in closing; but for example a part for food clips; liner is compressed; a part have space and the judgement of door open-close detection sensor 3 in half door opening state; in step S311, a part for the display part 17 on surface is lighted, is put and go out in front of the door, or informs user with portions of reporting such as buzzers.

In addition, in this structure, also can as shown in the control flow chart of Figure 23 A and Figure 23 B, carry out the excessive detection of depositing.Below, action is described.

In Figure 23 A, in step S312, detect and close the door, the detection of the amount of taking in after stipulated time Δ t (s) in step S313.Then in step S315, testing result, for example for example, for example, for the Z% above (more than 80%) of the SL above (, more than 150L) predetermining or the full amount of predetermining, moves to step S316.In addition, at the detected temperatures Tu of end face LED temperature thermistor 61a for example, higher than set point of temperature Ts5 (10 ℃) and the detected temperatures Tr that returns to air themperature thermistor 71 during lower than set point of temperature Ts6, in step S317, be judged as excessively and deposit, in step S311, a part for the display part 17 of face is lighted, is put and go out in front of the door, or informs user with portions of reporting such as buzzers.

In addition, in Figure 23 B, possess in the situation of freezer of end face wind path 79 as shown in figure 20, even that while depositing excessive, also can in door is taken in shelf 19 and case, take in shelf 18 is difficult to take in the cold air that circulates in the space of food, so can switch wind path according to the amount of taking in.Particularly, in step S321, be judged as excessive depositing, open air quantity adjustment part 78, cold air is carried to end face wind path 79, in cooler bin.Thus, the short circuit from outlet 73 to suction inlet 75 at the refrigerating chamber back side (short circuit) causing in the time of can preventing excessive depositing, can from before storeroom to the inside transporting cold-air, cooling collecting article suitably.In step S322, the portion of reporting is opened, if but in step S323, the detected temperatures Tu of the temperature thermistor 61a that uses of end face LED, lower than set point of temperature Ts7, closes the portion of reporting, in step S319, return to cooling control conventionally.

In addition, the portion of reporting can remove button and the operation of use at display part 17, can eliminate the unplessantness displeasure to user.

And, in this structure, as shown in figure 24, also can opposite house take in shelf and limit and take in detection.Below, action is described.

In step S334, the secondary optical sensor of 21b in utilizing that the illustrated in fig. 8 amount of taking in detects, use door to take in shelf and take in delta data, in step S335, detect door take in shelf take in be changed to predetermine for example+N% is when above, open at once opposite house and take in the air quantity adjustment part 78 of the cooling favourable end face wind path of shelf and carry out cooling.If the detected temperatures Tr that then returns to air themperature thermistor in step S337 lower than the Ts8 predetermining, closes air quantity adjustment part 78, to stop end face cooling, returns to common cooling running.Thus, at door, take in shelf 19 and put into food and also can carry out immediately coolingly, in the short time, reach set point of temperature.

As mentioned above, in the present embodiment, at end face LED20a, 20b set temperature sensor 61, at the refrigerating chamber back side, cover has the air themperature of returning thermistor, in addition, at refrigerating chamber end face, forms end face wind path, also possesses air quantity adjustment part, thus, can adjust amount of cooling water according to the temperature of end face, can carry out meticulous cooling control.

In addition, by also, with optical sensor, can precision detect well thermic load.

And, by possessing end face wind path and air quantity adjustment part, can the place of regulation is cooling fast reliably.

In addition, for partly opening the door and excessive depositing waited and state that quality accompanies also can easily drip detection, there is the portion of reporting, can report to client.

In addition, detect as take in shelf at door and exist and to take in while changing, can switch wind path and carry out reliably cooling.

(the 4th embodiment)

Figure 25 is the illumination of receiving state test section and the performance plot of output current of the freezer of the 4th embodiment of the present invention, and Figure 26 is the performance plot that the relation of the illumination in the rate of taking in of the freezer of the 4th embodiment of the present invention and receiving state test section is represented with the reflectivity at chamber interior wall face.In addition, with the identical component part of the 1st embodiment to the 3 embodiment of the present invention, use same-sign, omit detailed explanation.

The interior case of the inwall of the refrigerating chamber 12 of the freezer of formation present embodiment is formed by white ABS resin vacuum forming, and the reflectivity R that guarantees chamber interior wall face is more than 0.5.In addition, reflectivity R is with the light beam with respect to inciding certain face, and the ratio of the light beam reflecting at this face defines, and numerical value is more easily reflection.Mensuration can be carried out with commercially available spectrophotometer, also has the equipment that can simultaneously measure transmitance T.In addition, in JIS, with JIS-K3106 etc., stipulated mensuration, the test method of reflectivity R.In addition, about the mensuration of reflectivity R, can use luminance meter, from the known sample of reflectivity (gray scale), infer.

In addition, the incident light that transmitance T is specific wavelength sees through the ratio of sample, and numerical value more light more easily sees through.About transmitance T, with regulations such as JIS-K7361-1, there are mensuration, test method.Be disposed at and in the case of inside of refrigerating chamber 12 of freezer of present embodiment, take in shelf 18 and formed by polystyrene or glass, door is taken in shelf 19 and is formed by polystyrene.Like this, in case, taking in shelf 18 and door takes in the transmitance T of shelf 19 and guarantees to be respectively more than 70%.

In addition, possess the receiver that can extract out in the bottom of refrigerating chamber 12, key light sensor 21a, 21b and secondary optical sensor 21c are disposed at more closer to the top than the upper surface of receiver.

In said structure, the action of receiving state test section, control are as illustrated in embodiment 1 or 2, but technical characterictic is, the interior case that forms the inwall of refrigerating chamber 12 is formed by white ABS resin vacuum forming, and the reflectivity R of chamber interior wall face guarantees to be more than 0.5.

Figure 25 means the illumination of receiving state test section and the performance plot of output current of the freezer of the 4th embodiment of the present invention, the illumination of key light sensor 21a or key light sensor 21b and output current value now have the relation of straight line, and the higher output current of illumination is larger.On the other hand, the less output current value of illumination is less, below the illumination of regulation, is 0.5 lux when following in the receiving state test section of present embodiment, loses the relation with the straight line of output current.Output current value is now 0.1 μ A in the receiving state test section of present embodiment, but according to the specification of receiving state test section, different from the relation of output current value.Generally speaking, the sensor that detects illumination reduces with next precision near 1 lux, but in the present embodiment, supposes the illumination that performance is relatively good, the above illumination needing as bottom line using 0.5 lux.

; the illumination of the optical sensor of the state that the rate of taking in case is high is the receiving state test section below 0.5 lux; there is the problem that accuracy of detection reduces; so in present embodiment; illumination attenuation based in key light sensor 21a or key light sensor 21b, the minimal illumination of optical sensor of inferring the receiving state of collecting article is more than 0.5 lux.Thus, from the viewpoint of minimal illumination, illumination attenuation that can be based in optical sensor improve collecting article receiving state infer precision.

It is 0.1 μ A that above-mentioned minimal illumination is scaled to output current value, and the minimum output current of optical sensor that the illumination attenuation based in present embodiment is inferred the receiving state of collecting article is more than 0.1 μ A.Thus, from the viewpoint of minimum output current, illumination attenuation that can be based in optical sensor improve collecting article receiving state infer precision.

In addition, according to variations in temperature, make the light varience as the LED of light source, according near its output valve of temperature sensor correction, with the luminosity irradiation of stable LED, thus, illumination attenuation that can be based in sensor improve collecting article receiving state infer precision.

In addition, Figure 26 is the performance plot that the relation of the illumination in the rate of taking in of the freezer of the 4th embodiment of the present invention and receiving state test section is represented with the reflectivity at chamber interior wall face.Make the light quantity of light source certain, improve the rate of taking in case the illumination in optical sensor decline.Like this, the reflectivity R of chamber interior wall face reduces same illumination of taking in the optical sensor of rate and forms the tendency declining.This is because the part of the light from light source is in the reflection of chamber interior wall face, arrives optical sensor, and the reflectivity R of chamber interior wall face reduces the light quantity that arrives optical sensor and declines.

In addition, sometimes in chamber interior wall face portion, design part that reflectivity is low etc. is set, but the light quantity that arrives optical sensor depends on the reflectivity R of the wide chamber interior wall face of area.

And, as mentioned above, the minimal illumination of optical sensor of inferring the receiving state of collecting article from the illumination attenuation based on key light sensor 21a or key light sensor 21b need to be viewpoint more than 0.5 lux, and the reflectivity R of known chamber interior wall face need to be for more than 0.5.

If really make the light income in optical sensor increase, can improve the light quantity of light source, but due to the rising of power consumption and the heating of light source, sometimes the temperature inside the box rises, or with illumination functions used time, it is dizzy that user feels, the visibility of food is deteriorated, so carelessly improve, is not good method.Therefore, the light source of present embodiment is used LED, makes the inherent empty state of case and opens in the state of refrigerating-chamber door 12a, and while measuring illumination in darkroom, in case, taking in the position that forms minimal illumination on shelf 18 is below 100 luxs.Illumination is now that 100 luxs refer to the lightness of seeing from user's side below, particularly, is by the highest axle of detecting part medium sensitivity of general illumination photometer, with the value of taking in shelf 18 levels in case and recording towards refrigerating-chamber door 12a side setting.

In addition, the light source of present embodiment, considers that the luminosity that uses each LED is the LED below 20 candelas to the heat affecting in case.

In addition, using the LED of the receiving state test section as illuminating LED 20 as with illumination functions not also during the special-purpose light source of use etc., when the luminosity of the light source of receiving state test section is relatively low, the reflectivity R in case need to be brought up to higher than 0.5.

In addition, in the bottom of refrigerating chamber 12, possesses the receiver that can extract out, key light sensor 21a, 21b and secondary optical sensor 21c are disposed at more closer to the top than the upper surface of receiver, so key light sensor 21a, the 21b in the time of can avoiding receiver to open and close and the interference of secondary optical sensor 21c, can guarantee easy to use in receiving room and improve the reliability of optical sensor.

In addition, can end face LED20a, 20b is integrated, be also used as the light source that case intraoral illumination is used and receiving state test section is used.

In addition, in embodiment 1, illustrated that key light sensor 21a, 21b are disposed at the freezer of left and right sides in case, but can be also the either party who is disposed at case medial surface in present embodiment, in same side, configured the structure of secondary optical sensor 21c.The quantity of optical sensor can be reduced thus, cost degradation can be realized.

In addition, in the 1st embodiment of the present invention, with the installation site of end face LED20a, 20b, side LED20c～20e, 20g～20i, side below LED20f, 20j and key light sensor 21a, 21b, be disposed at and in case, take in shelf 18 and door and take in the freezer of the space alpha between shelf 19 and be illustrated.With respect to this, in present embodiment, in a plurality of casees, take in front end that shelf 18 takes in shelf 18 in above-below direction configuration, each case in vertical not at same position, particularly, the front end of taking in shelf 18 in the case of the superiors is positioned at foremost, be positioned at than undermost case, take in shelf 18 front end more on the front.

And the plumb line that is configured to the center of the fore-and-aft direction by end face LED20a, 20b is positioned at (case of the superiors is taken in the front end of shelf 18) the foremost structure more on the front of taking in shelf 18 than each case.

In addition, key light sensor 21a, 21b take in shelf 18 and take between shelf 18 in the 2nd case of lower number formulary in closer to the top and undermost case at the upper surface of the nethermost receiver than at refrigerating chamber 12.And the front and back position of key light sensor 21a, 21b is disposed at than taking in shelf 18 and the front end of taking in shelf 18 in the 2nd case of lower number formulary space alpha more on the front in undermost case.

In addition, it is also same with the configuration of key light sensor 21a that near key light sensor 21a, configuration receiving state detect to be revised the blue led 22a of use, is disposed at than taking in shelf 18 and the front end of taking in shelf 18 in the 2nd case of lower number formulary space alpha more on the front in undermost case.

Therefore, in each case, take in the front end of shelf 18 in the situation that vertical is not positioned at same position, by the installation site of end face LED20a, 20b, side LED20c～20e, 20g～20i, side below LED20f, 20j and key light sensor 21a, 21b is determined as described above, space can be guaranteed reliably, the accuracy of detection with the receiving state test section of the present embodiment of the illumination attenuation of the irradiation light from light source of light sensors can be improved.

The present invention has freezer main body, the heat insulation storeroom marking off, the case interior lighting device arranging for storeroom is thrown light on and for detection of near the temperature detecting part of temperature case interior lighting device, case interior lighting device and temperature detecting part are arranged at the interior case of freezer and are formed on same substrate.Can cut down components number and easily blocking, in addition, can precision detect well near LED, the temperature of substrate atmosphere gas, product can be provided at an easy rate and can alleviate working load, improve substrate security around.

In addition, the present invention by be formed in case interior lighting device on same substrate and temperature detecting part be arranged at storeroom before.Can from front side direction, preserve the inside irradiation light of collecting article, so can improve the visibility of collecting article while seeing from user and due near opening surface, can reduce the homework burden while making, cut down workload.

In addition, the present invention is by the end face that is formed in case interior lighting device on same substrate and temperature detecting part and is arranged at storeroom.Irradiate from the top down light, thus the visibility of the collecting article when container of specific low temperature chamber is extracted out can be improved, and due near opening surface, can reduce the working load while making, and cut down workload, product is provided at an easy rate.

In addition, the present invention is by the side that is formed in case interior lighting device on same substrate and temperature detecting part and is arranged at storeroom.Due to the central portion that can irradiate hand and can relatively easily get at, so can improve the visibility of collecting article and reduce the installation exercise load of substrate.

In addition, the present invention will be formed between the reveal accommodating container and the shelf of main body side that case interior lighting device on same substrate and temperature detecting part be arranged at storeroom.What be not vulnerable to that collecting article causes covers etc., and light easily arrives integral body, and the visibility of collecting article improves.

In addition, in the present invention, case interior lighting device consists of the LED illumination part as semiconductor element, and temperature detecting part is installed thermistor by face and formed.Parts are installed easy automation to substrate, and easily slimming, miniaturization, thus can improve thermal insulation, and substrate can be provided at an easy rate.

In addition, the present invention has the receiving state test section of the receiving state of inferring collecting article in the inside of storeroom and the light source of the inside that receiving state test section is arranged at storeroom and detection from the optical sensor of the test section of the irradiation light of light source irradiation.And, thereby this light sensors is irradiated the state that light reaches capacity in the wall of receiving room or the distribution of the lightness in collecting article interreflection receiving room.The output valve of the optical sensor causing according to the variation of the amount of taking in is inferred the amount of taking in of storeroom, can carry out the cooling running that conforms to it, can improve energy saving thus.

In addition, the present invention is also used as case interior lighting device by the light source of receiving state test section.Can not increase components number and improve function, thereby improve convenience.

In addition, the present invention has freezer main body, the heat insulation storeroom marking off, is arranged at light source, and the light source s operation control portion that carries out calculation process for detection of temperature detecting part and the testing result based on temperature detecting part of near temperature light source on same substrate of the inside of storeroom.S operation control portion makes the voltage variable that applies to light source according to the value of the detected temperatures of temperature detecting part, thereby makes luminosity certain.Owing to making the luminosity of affected light source certain according to the temperature inside the box, so the deviation of the illumination that can suppress to open the door at every turn.

In addition, the present invention is configured to roughly linearity by light source and temperature detecting part on same substrate.Substrate area in installation is waste not, miniaturization that can be by substrate, quantity increase etc. is installed forms at an easy rate.

In addition, the present invention has a plurality of light sources, a plurality of light sources and temperature detecting part is disposed on same substrate, and configures temperature detecting part between a plurality of light sources.In the situation that having a plurality of light source, precision is grasped its environment temperature well reliably, can further case intraoral illumination be controlled as certain.

In addition, in the present invention, from lighting through in certain hour of light source, do not carry out temperature detection.Detection is because the peripheral temperature of lighting of light source rises, and the luminosity of prediction LED reduces, more than can preventing that luminosity is increased to necessity, and illumination intensity change.

In addition, the present invention possesses a plurality of temperature detecting parts at storeroom, and at least one temperature detecting part and light source are formed in same substrate.For adjusting different purposes with the temperature of storeroom, for example, adjustment, door switching situation, process inspection for the luminosity of LED, can provide the more product of high reliability thus from the temperature detecting part of light source on same substrate.

In addition, the present invention possesses a plurality of temperature detecting parts at storeroom, and at least one temperature detecting part and light source are formed in same substrate, by the temperature that the temperature detecting part on same substrate and temperature detecting part in addition carry out storeroom with light source, adjusts.According to the output valve of a plurality of temperature sensors, carry out computing, can provide detect excessively deposit, more stable storage room temp.

In addition, the present invention has the optical sensor of the irradiation light irradiating from light source and the s operation control portion that the testing result based on optical sensor is carried out calculation process detected.Thereby by light sensors, irradiate the state that light reaches capacity in the wall of receiving room or the distribution of the lightness in collecting article interreflection receiving room, based on this result, infer the amount of taking in of collecting article.The output valve of the optical sensor causing according to the variation of the amount of taking in is inferred the amount of taking in of storeroom, can carry out the cooling running that conforms to it, can improve energy saving thus.

In the present invention, light source is also used as case interior lighting device.Can not increase components number and improve function, thereby improve convenience.

The present invention does not carry out the temperature detection of temperature detecting part during the state that the distribution of the lightness with in light sensors receiving room reaches capacity.By saving useless computing, can predict rapidly and take in variation.

Industrial utilizability

Freezer involved in the present invention, home-use or the amount of taking in measuring ability is set in freezer, freezer for business, is used its result, can in economize on electricity running waits the control of switching operation mode, implement, application.

Description of reference numerals

1 s operation control portion

2 memories

3 open-close detection sensor

4 timers

11 freezer main bodys

12 refrigerating chambers

12a refrigerating-chamber door (insulated door)

13 ice-making compartments

14 switching chambers

15 refrigerating chambers

16 vegetable compartment

17 display parts

In 18 casees, take in shelf

Take in shelf for 19

20 illuminating LEDs

20a, 20b end face LED

20c～20e, 20g～20i side LED

20f, below, 20j side LED

21a, 21b key light sensor

The secondary optical sensor of 21c

21d～21q optical sensor

22a, 22b blue led

23a～23h collecting article

24a～24j light

25 cooling air ducts

26 outlets

27 pipeline covers

30 compressors

31 cooling fans

32 air quantity dampers

33 heaters

61 temperature sensors

61a, 61b, 61c temperature thermistor

62 substrates

63,103c, 105a connector

64 illuminating covers

65 bases

66 outer containers

67 interior casees

68 heat-barrier materials

70 refrigerating chamber back side covers

71 return to air themperature thermistor

72 discharge wind path

73 outlets

74 suck wind path

75 suction inlets

76 end face outlets

77 end face covers

78 air quantity adjustment parts

79 end face wind paths

100 lighting devices

101 bases

101a incorporating section

102 LGPs

102a recess

102b inclined plane

102c exit facet

103 substrates

103a?LED

103b thermistor

104 reflector plates

105 lead-in wires

Claims (17)

1. a freezer, is characterized in that, comprising:

Freezer main body, the heat insulation storeroom marking off, the case interior lighting device that described storeroom is thrown light on and detect near the temperature detecting part of the temperature described case interior lighting device,

Described case interior lighting device and temperature detecting part are arranged at the interior case of freezer, and are formed on same substrate.

2. freezer as claimed in claim 1, is characterized in that:

Described be formed in case interior lighting device on same substrate and temperature detecting part be arranged at storeroom before.

3. freezer as claimed in claim 1, is characterized in that:

Describedly be formed in the end face that case interior lighting device on same substrate and temperature detecting part are arranged at storeroom.

4. freezer as claimed in claim 1, is characterized in that:

Describedly be formed in the side that case interior lighting device on same substrate and temperature detecting part are arranged at storeroom.

5. the freezer as described in any one in claim 1～4, is characterized in that:

Described case interior lighting device and the temperature detecting part being formed on same substrate, is arranged between the reveal accommodating container and the shelf of main body side of storeroom.

6. the freezer as described in any one in claim 1～4, is characterized in that:

Described case interior lighting device consists of the LED illumination part as semiconductor element, and temperature detecting part is installed thermistor by face and formed.

7. the freezer as described in any one in claim 1～4, is characterized in that:

The optical sensor of the test section of the irradiation light that there is the light source of the inside that is arranged at described storeroom and irradiate from described light source as detection, in the inside of described storeroom, be provided with the receiving state test section of the receiving state of inferring collecting article, thereby described in described light sensors, irradiate the state that distribution that light reflects the lightness in described receiving room repeatedly at wall or the described collecting article of described receiving room reaches capacity.

8. freezer as claimed in claim 7, is characterized in that:

The light source of described receiving state test section is also used as case interior lighting device.

9. a freezer, is characterized in that, comprising:

Freezer main body; The heat insulation storeroom marking off; Be arranged at the light source of the inside of described storeroom; Near the temperature detecting part of the temperature with described light source on same substrate, detection light source; Carry out the s operation control portion of calculation process with the testing result based on described temperature detecting part,

Described s operation control portion makes the voltage variable that applies to light source according to the value of the detected temperatures of described temperature detecting part, thereby makes luminosity certain.

10. freezer as claimed in claim 9, is characterized in that:

Described light source and described temperature detecting part are configured to linearity on same substrate.

11. freezers as described in claim 9 or 10, is characterized in that:

Have a plurality of described light sources, a plurality of described light sources and described temperature detecting part, on same substrate, configure described temperature detecting part between a plurality of described light sources.

12. freezers as described in claim 9 or 10, is characterized in that:

From lighting through in certain hour of described light source, do not carry out temperature detection.

13. freezers as described in claim 9 or 10, is characterized in that:

At described storeroom, possess a plurality of temperature detecting parts, at least one temperature detecting part and light source are formed on same substrate, are used for adjusting different purposes with the temperature of storeroom from the temperature detecting part of light source on same substrate.

14. freezers as described in claim 9 or 10, is characterized in that:

At described storeroom, possess a plurality of temperature detecting parts, at least one temperature detecting part and light source are formed on same substrate, utilize the temperature adjustment that the temperature detecting part on same substrate and temperature detecting part in addition carry out storeroom with light source.

15. freezers as described in claim 9 or 10, is characterized in that, comprising:

The optical sensor of the irradiation light that detection is irradiated from described light source; Carry out the s operation control portion of calculation process with the testing result based on described optical sensor,

Thereby with the state that irradiates distribution that wall or the described collecting article of light at described receiving room reflect the lightness in described receiving room repeatedly described in described light sensors and reach capacity, based on this result, infer the amount of taking in of collecting article.

16. freezers as claimed in claim 15, is characterized in that:

Described light source is also used as case interior lighting device.

17. freezers as claimed in claim 15, is characterized in that:

During the state reaching capacity in the distribution of the lightness with in receiving room described in light sensors, do not use the temperature detection of described temperature detecting part.