CN100380077C - refrigerator - Google Patents

Abstract

Conventionally, in order to improve storage performance by irradiating light in the vegetable compartment of a refrigerator, fluorescent lamps or red LEDs with a wavelength of 660nm are used, or light is irradiated from above by controlling the on/off of the door opening/closing detection device . On the other hand, in the refrigerator of the present invention, there is a structure in which a warm orange LED is used to irradiate from the back. In addition, the life of the LED is extended by having a light-on time and a light-off time respectively, so it is not necessary to install a door opening and closing detection device. There is a light irradiation device that controls the lighting and extinguishing of a plurality of LEDs separately or at intervals for each group to achieve effective photosynthesis.

Description

refrigerator

technical field

The present invention relates to techniques related to food storage such as vegetables in a refrigerator.

Background technique

Conventional refrigerators are known to irradiate vegetables with red LEDs from above to maintain freshness of vegetables, etc., to improve storability (for example, refer to Patent Document 1). In addition, there is a technique of installing a white fluorescent lamp and controlling its lighting with a switch that detects the opening and closing of a door to prevent the reduction of chlorophyll of green vegetables (for example, refer to Patent Document 2). Furthermore, there is also a report on investigation of respiration and low-temperature failure by LED irradiation with respect to the unfrozen temperature of food of 0° C. or less (for example, refer to Patent Document 3).

Patent Document 1: JP-A-2002-267348 (Column 0036, Figures 1 and 2, etc.)

Patent Document 2: JP-A-9-28363 (Column 006, Figure 1, etc.)

Patent Document 3: JP-A-2001-61459 (column 0011, column 0012, column 0069, etc.)

The existing refrigerators have the following problems. First, because the light of the red LED is used, the vegetables look ugly. Second, a door opening and closing recognition device is required to recognize the opening and closing of the door and control the lighting time. Third, , because the light is irradiated from above, it cannot irradiate the food placed in the lower container. Fourth, because it is irradiated from above, it is difficult to wire electrical components. Fifth, if it is irradiated from above or only when the door is closed If it is not irradiated, it is difficult to confirm whether it is lit at home or in a store. In the case of household refrigerators, various types of vegetables are stored, or various foods such as foods other than vegetables are often replaced, and the storage location is not determined in an empty place, or they are stacked together , so that there will be various save states for spaces, periods, states, etc. Furthermore, there are cases where only refrigeration and freezing are distinguished, and storage is performed regardless of temperature. It is necessary and necessary for such food preservation, no matter in which kind of preservation form, it is important to have the effect of preservation by light irradiation, there is no adverse effect, and the refrigerator with low power consumption is high in efficiency, and it is almost impossible to have a long life of parts Maintenance, etc. are required, but in the case of white fluorescent lamps, good effects and bad effects cannot be separated, and even if a wavelength that is good for a specific preservation effect, such as red or cyan, is selected and tested under ideal conditions, there are storage conditions that are bad, and it is not necessarily Access to functional refrigerators.

Contents of the invention

The present invention is proposed in order to solve the above-mentioned problems. The present invention provides a refrigerator that makes food such as vegetables not ugly and can effectively store food in various storage forms.

In addition, since the present invention effectively uses a small amount of semiconductor light emitting elements (LEDs), it is possible to obtain a refrigerator with a long service life and high efficiency.

In addition, the present invention provides a refrigerator capable of irradiating light to food stored in a necessary position such as a storage container provided in a lower portion, and having good storage stability.

In addition, the present invention provides a refrigerator which is easy to maintain LEDs, cheap, easy to install, less wasted energy, and easy to recycle.

In addition, the present invention not only uses good-looking light that does not adversely affect food to preserve food, but also improves food preservation performance when used as lighting in a refrigerator.

The refrigerator of the present invention is equipped with: a plurality of light sources arranged on the inner side of the refrigerator to irradiate yellow or orange light with a wavelength in the visible light region of about 590 to 600 nm; settings capable of controlling the respective lighting and extinguishing of the plurality of power sources Controls on the main body of the refrigerator.

In addition, a refrigerator is provided, which is characterized in that it includes: a plurality of light sources arranged inside the refrigerator to irradiate yellow or orange light with a wavelength in the visible light region of 590 to 600 nm; A storage container; a light-shielding member provided on the storage container to block light from the light source, wherein there are positions where light is irradiated and positions where light is not irradiated in the storage container.

Since the refrigerator of the present invention sets the light source at a wavelength that emits warm light, it has the effect of increasing nutrients without damaging the appearance of vegetables and other foods, and can be used as a refrigerator interior lamp. In addition, the light source of the refrigerator according to the present invention irradiates LEDs at intervals and alternately controls the lighting of the LEDs to prolong the life of the LEDs, thereby providing an effect of obtaining an efficient refrigerator.

Description of drawings

Fig. 1 is a cross-sectional view showing a refrigerator according to Embodiment 1 of the present invention.

Fig. 2 is a perspective view showing a vegetable compartment according to Embodiment 1 of the present invention.

Fig. 3 is a graph showing the wavelength distribution of the light irradiation device according to Example 1 of the present invention.

Fig. 4 is a perspective view showing a light irradiation device according to Embodiment 1 of the present invention.

5 is a table showing the relationship between LED wavelengths and colors in the light irradiation device according to Example 1 of the present invention.

Fig. 6 is a graph showing wavelength characteristics of photoreaction of plants in Example 1 of the present invention.

Fig. 7 is a circuit diagram showing a light irradiation device according to Embodiment 1 of the present invention.

Fig. 8 is a mounting diagram showing a substrate of a light irradiation device according to Embodiment 1 of the present invention.

FIG. 9 is a flowchart showing light irradiation control in Embodiment 1 of the present invention.

Fig. 10 is a timing chart showing light irradiation control in Embodiment 1 of the present invention.

Fig. 11 is a graph showing test results of vegetables in Example 1 of the present invention.

Fig. 12 is a perspective view showing another vegetable compartment according to Embodiment 1 of the present invention.

Fig. 13 is a sectional view showing another refrigerator according to Embodiment 1 of the present invention.

Fig. 14 is a sectional view showing another refrigerator according to Embodiment 1 of the present invention.

Fig. 15 is a sectional view showing another refrigerator according to Embodiment 1 of the present invention.

Fig. 16 is a perspective view showing another vegetable compartment according to Embodiment 1 of the present invention.

Fig. 17 is an external view showing another refrigerator according to Embodiment 1 of the present invention.

Fig. 18 is a sectional view showing another vegetable compartment according to Embodiment 1 of the present invention.

Fig. 19 is a cross-sectional view showing another light irradiation device according to Embodiment 1 of the present invention.

Fig. 20 is a circuit diagram showing a light irradiation device according to Embodiment 1 of the present invention.

Fig. 21 is a graph showing the conduction rate in Example 1 of the present invention.

FIG. 22 is a timing chart showing a modified example of the energization rate in Embodiment 1 of the present invention.

Fig. 23 is a flowchart showing a modified example of the energization rate in Embodiment 1 of the present invention.

Detailed ways

Example 1

Fig. 1 is a cross-sectional view showing a refrigerator according to Embodiment 1 of the present invention, Fig. 2 is a schematic diagram showing the inside of a vegetable compartment according to this embodiment, Fig. 3 shows wavelength characteristics of LEDs which are semiconductor light-emitting elements, and Fig. 4 is a diagram of a light irradiation device. Zoom in on the section view.

In Fig. 1, 1 is the main body of the refrigerator, which is composed of the following parts: a refrigerator compartment 100 equipped with an openable door is arranged at the top of the refrigerator 1; , Vegetables, cold hard objects, soft freezing (-7 ℃) and other temperature zones with a switch chamber 400 with a pull-out door; an ice-making chamber 500 with a pull-out door arranged side by side with the switch chamber; a freezer with a pull-out door arranged at the bottom Compartment 200; Vegetable Compartment 300 with a pull-out door between the Switch Compartment and the Ice Compartment. The door of the refrigerator 100 is provided with an operation switch for adjusting the temperature and setting of each compartment, and an operation panel 5 made of liquid crystal or the like for displaying the temperature of each compartment at that time. As shown in Figures 1 and 2, in the vegetable compartment 300, a container 30 made of a light-transmitting material and a second container 31 arranged on the upper part of the container 30 made of a light-transmitting material can be arranged. Accommodates foods such as vegetables. As the opaque material, white plastic, stainless steel, or metal such as aluminum oxide is used. 32 is a light irradiation device, which is installed on the back surface of the second storage container 31 as shown in FIG. 2 , and can irradiate light around the center of the second storage container. The light irradiation device 32 is composed of a substrate on which four LEDs 34 having a peak value of 590 nm as shown in FIG. 3 and emitting light in a wavelength range of 550 nm to 620 nm are mounted.

In Fig. 1, 10 is a compressor, 11 is a cooler, 12 is a fan for blowing cold air cooled by the cooler 11 to the refrigerator compartment 100 and the freezer compartment 500, and 13 is to adjust the amount of cold air provided in the refrigerator compartment 500. The regulator device 14 is an air path for introducing cold air cooled by the cooler 11 into the refrigerator compartment 100 . The board 22 of the control device for controlling the lighting and extinguishing of the light irradiation device 32 is housed in the electrical component room 21 at the back of the refrigerator, and is controlled by a microcomputer or the like housed on the board 22 .

In FIG. 4 , the light irradiation device 32 is composed of a mounting board 33 , a semiconductor element LED34 as a light source provided together with the mounting board 33 , and a cover 35 for protecting the light transmission of the LED34 . Since LED generally has a tendency that the higher the brightness, the narrower the directivity, the mounting board 33 and the cover 35 are fixed with screws so that the irradiation angle will not change due to the vibration of the refrigerator. The back surface of the mounting board 33 is covered with a protective layer 36 in order to prevent a short circuit. In addition, light irradiation device 32 is attached to the front surface of heat insulating member 37 on the back side of vegetable compartment 300 , and is installed so as to irradiate the inside of vegetable compartment 300 with light from LED 34 . In order to prevent dew condensation in the cover 35, the ring 38 is embedded to increase the closeness, cut off cold air, and prevent dew condensation on the mounting substrate 33 and light scattering due to water droplets. In addition, the cover 35 has a protruding portion 39 having a shape that prevents the storage container from colliding with the cover surface, thereby preventing light scattering, damage to the mounting board 33 and the LED 34 , and failure due to damage to the cover surface. The protruding portion 39 is provided in consideration of various situations such as preventing collision of the surface of the cover, handling the cover 35 during the manufacturing process, and attaching and detaching the container during use.

In addition, by installing the light irradiation device on the rear side of the vegetable compartment in the refrigerator, fans, regulators, and other electrical components can be located close to each other, so wiring is easy and manufacturing can be inexpensive. In addition, in the case of circulating cold air in the refrigerator, since the blower port and the suction port are arranged on the back side, the direction in which light is irradiated into the refrigerator from the inside to the front side can be made to be consistent with the direction in which the cold air moves, that is, Blow out cold air in the same direction as inhale cold air. In the case of storing food in a refrigerator without a storage container or a vegetable room with a storage container, etc., by designing a structure that facilitates the passage of cold air, the ejection and suction directions of the cold air are consistent, and it is easy to The light is irradiated in common to the whole body. In addition, by installing the interior lighting of the refrigerator on the back side, it is easy to see the inside of the refrigerator compartment when the door is opened.

In addition, since it is easier for the user to confirm the lighting state than when it is installed on the top or the side, it is easy to carry out product promotion at the counter and lighting confirmation at home. Furthermore, the heat insulating material structure on the back side is stronger than the partition plate which divides a refrigerator compartment, and the vibration to LED is small, and reliability can be improved.

Fig. 5 is a diagram showing absorption wavelengths and colors of visible light rays. Fig. 6 is a graph showing the growth effect of plants per unit energy in terms of different wavelengths. LED34 emits visible ray region wavelength, visible ray as shown in Figure 5, has the purple beginning from the shortest wavelength, blue, green, yellow, orange, to the red of longest wavelength. In addition, plants basically grow and develop through photosynthesis, but in addition to this, they also form the light form of qualitative changes in plants such as seed germination, flower bud differentiation, flowering, leaflet expansion, chlorophyll synthesis, and branch elongation, and accumulate nutrients as an energy source. Among them, germination and flowering, which are not suitable for vegetable preservation, are formed as shown in Figure 6, and tend to be promoted by cyan light around 470nm and red light around 660nm. In addition, the peak absorption of chlorophyll is also the largest in cyan light and red light, and the proportion of green and yellow light is small. On the other hand, as shown in Figure 6, the energy efficiency of photosynthesis is highest in red, and decreases with shorter wavelengths. Therefore, in the visible light region, the colors that are effective for the speed of photosynthesis are firstly red and secondly cyan, and other colors are effective when the wavelength is long. However, since germination and flowering are promoted in the vicinity of blue light, it is not suitable for the purpose of long-term preservation of vegetables.

Next, photosynthesis will be described. If photosynthesis is represented by chemical formula, it is 6CO ₂ +12H ₂ O+688kcal→C ₆ H ₁₂ O ₆ +6H ₂ O+6O ₂

(CO ₂ : carbon dioxide, H ₂ O: water, 688kcal: light energy, C ₆ H ₁₂ O ₆ : glucose)

This action is divided into a bright reaction using light energy and a dark reaction not using it. Bright reaction is a reaction that converts the light energy of sunlight into chemical energy. At this stage, instead of using carbon dioxide, pigments such as chlorophyll use light energy to decompose water into hydrogen and oxygen, and accumulate chemical energy through the action of enzyme proteins. On the other hand, in the dark reaction, glucose is synthesized using hydrogen gas obtained in the light reaction and carbon dioxide in the atmosphere. In addition, vegetables to which glucose has been added have better storage properties, and vitamin C is produced from glucose.

From the above effect, heat generation can be suppressed by using a plurality of LEDs, and evaporation of vegetables etc. can be suppressed, and photosynthesis can be most effectively promoted by using a red LED as LED34. However, the cool color of vegetables changes color due to red light, and it is difficult to see the deterioration of vegetables. Since red light is a warning, it is not suitable for lighting in refrigerators. Therefore, yellow light with a wavelength peak near 590nm or 600nm is used. Nearby orange light, etc. is close to red, or is not a cool color that covers the color of the object but a warm color. Using LEDs with a color close to incandescent lamps can obtain an intimacy effect, and can obtain the effect of photosynthesis and the effect of lighting at the same time. . Furthermore, as shown in FIG. 6, the food preservation effect of photosynthesis can be acquired. As shown in FIG. 5 , the wavelengths from yellow to orange are 580 to 610 nm, and if this range is used as a peak, warmer colors can be obtained.

Also, photosynthesis can be performed more efficiently by configuring a light irradiation device using a plurality of LEDs such as combining red LEDs and cyan LEDs to irradiate light that matches the absorption peak of chlorophyll. That is, if a plurality of colors are simultaneously illuminated to obtain a warm color, it is possible to simultaneously emit light separately to obtain respective effects. In addition, not only LEDs that emit light in one color can be combined, but LEDs and phosphors can also be combined.

In addition, by using high-brightness LEDs and scattering LEDs, the number of LEDs can be reduced, photosynthetic effects and lighting effects can be obtained, and the light irradiation device 32 can be configured at low cost.

In addition, FIG. 7 shows an electric circuit diagram of the light irradiation device, and FIG. 8 is a mounting arrangement diagram of LED34, and a system 34A in which LED34a and 34b are arranged on two mounting substrates, and a system 34B in which LED34c and 34d are arranged are connected in parallel in two columns. . LED34a, 34b, 34c, 34d is made to emit light by applying DC5V-12V, and flowing the electric current of about 30mA. The current value is as small as about 30mA, which is safe. In addition, by configuring one system with two LEDs like 34A and 34B, arranging each system up and down as shown in FIG. About 100Lx is ensured in the irradiation range, and about 300Lx can be ensured when two systems are turned on, and the life of the LED can be extended, so it can ensure sufficient life without detecting the door opening and closing. In addition, by controlling a plurality of LEDs as one system, that is, in groups, the number of ports of the microcomputer can be reduced, and the substrate can be simplified. As shown in Fig. 7, a transistor that outputs a signal from a microcomputer to control on and off is placed in series with the LED, and a resistor that limits the current flowing through the LED is set to control the lighting and extinguishing of the LED. In the actual substrate mounting of this structure, if the resistor is arranged on the control substrate side, the mounting substrate 33 of the light irradiation device 32 can be miniaturized, and it can be easily arranged in the vegetable compartment. In addition, the heating of the resistor can be suppressed. storage performance. On the other hand, if the resistor is placed on the mounting board side of the light irradiation device 32, there is an effect that it is easy to confirm lighting and find a defective position in the event of a failure. The combination of 2 and 4 is used as an example to illustrate the control of lighting and extinguishing, but the minimum number may be one, and the number may be any number such as 8 or 12. In addition, the applied voltage and current can be appropriately selected according to the number of LEDs to be used and the required illuminance.

In order to improve storability by promoting the synthesis of glucose and the like in preserved vegetables, and to produce nutrient-rich vegetables with increased vitamin C, the dark reaction of photosynthesis is required, so it is not necessary to light up 4 LEDs constantly, but a limit point is required Brightness time and illuminance. This restriction prolongs the life of the LED, making it unnecessary to replace the light irradiation device. Thereby, energy can be used without waste, and food preservation can be performed efficiently.

Hereinafter, operation|movement in the refrigerator comprised as mentioned above is demonstrated.

The cold air cooled by the cooler 11 of FIG. 1 is sent into the freezer compartment 200 by the fan 12, and the freezer compartment is cooled to a predetermined temperature of about -18°C. On the other hand, a part of cold air cooled by the cooler 11 passes through the air passage 14, and is controlled by the opening and closing of the regulator 13, and is sent into the refrigerator compartment 100, the switch chamber 400, and the ice making compartment 500, and the refrigerator compartment 100 is cooled. To the specified temperature of about 3°C, the switching chamber 400 is cooled to a temperature corresponding to the setting, and the ice making chamber 500 is cooled to -18°C. In order to suppress the evaporation of vegetables, the vegetable compartment 300 is not directly blown in cold air, but is indirectly cooled to a specified temperature by utilizing the radiation from the switch compartment 400 above the vegetable compartment 300, the ice making compartment 500, and the freezer compartment 200 below the vegetable compartment 300. The temperature is about 5°C. In addition, of course, instead of indirect cooling as already explained above, a structure in which cool air circulates may also be used.

As shown in FIG. 2, a storage container 30 and a second storage container 31 are provided in the vegetable compartment 300, and when vegetables are stored in the vegetable compartment, vegetables such as spinach and rapeseed which mainly require the effect of photosynthesis are respectively contained. In the second storage container 32 , root vegetables such as potatoes and onions that need to be stored in a dark place are stored in the storage container 31 . The vegetables stored in the second storage container 30 are irradiated with light by the light irradiation device 32 located on the back surface of the second storage container 31 . At this time, if four high-brightness type LEDs 34 are used, about 300 to 400 Lx can be generated, and if two lamps are used, about 100 to 150 Lx can be generated at the irradiation position of light. On the other hand, the root vegetables accommodated in the storage container 30 are shielded from light by a non-light-transmitting material, or shielded from direct light irradiation according to the food accommodated in the storage container 31 .

FIG. 9 is a flow chart of simple control of the light irradiation device, and FIG. 10 is a timing chart of light irradiation control and photosynthesis of vegetables. In FIG. 9, after turning on the power of the refrigerator main body 1, in step S40, corresponding to the initial data stored in the microcomputer of the control board, in the case of lighting two lamp data, in step S41 The two LED34 of the light irradiation device 32 are turned on in the middle, and in the case of the data of light-off, the LED34 of the light irradiation device 32 is turned off in step S42.

Next, in the case of entering the defrosting operation of the refrigerator in step 43, four LEDs 34 are lighted in step 44, and the irradiation of four LED lamps is started in step 45, and after 3 hours have passed, proceed to Step 46, receiving the data from the control board, turning on or off the two lights. In step 46, the state before proceeding to the defrosting of step 43 is stored, and the state is the same as this state. Since the defrosting operation in step S43 is controlled to be performed once a day, it is controlled to be irradiated with light of 300 Lx or more for 3 hours a day through a series of controls in steps 43 to 46 .

In FIG. 10 , four LED lamps are turned on by using the defrosting operation in step 43 as a trigger, and the vegetables irradiated with light produce a light reaction of photosynthesis, and two LED lights are switched on or off after 3 hours. Light, the dark reaction that produces photosynthesis. The defrosting operation in the refrigerator is an operation in which frost is removed because moisture contained in the cold air is fixed to the fan of the cooler 11 as an evaporator when the cold air in the refrigerator is circulated. The evaporator in the refrigeration cycle cools the air in the refrigerator through the heat exchanger when the refrigerant circulating in the compressor 10 evaporates. At this time, the moisture contained in the air in the refrigerator becomes frost and adheres to the fan of the cooler. In order to remove this frost, the heater provided in the lower part of the cooler is operated, and the frost is evaporated and removed. At this time, the fan 12 in the refrigerator is stopped, and the regulator is closed so that cold air is not blown into each chamber, so that the blowing of cold air is blocked, and the temperature in the refrigerator is increased by the heat dissipated by the heater. In a refrigerator room with a low temperature of 0° C. or lower, photosynthesis becomes more active as the temperature rises, so it is effective to increase the intensity of irradiation from a light source in the refrigerator during a defrosting operation. Furthermore, the door opening/closing pattern of the refrigerating room during the day can be stored, the defrosting operation can be performed during a time period when the door is rarely opened and closed, and the light from the light source can be irradiated according to these preset conditions. Furthermore, in the freezer, not only the lighting in the refrigerator but also ultraviolet rays can be used in combination. In addition, here, the defrosting operation is controlled based on light irradiation, but of course, it is also possible to store the opening and closing of the door and set the time, or preset it as a midnight time period, and only light the lamp during this time period. Turn off the time period other than this, or increase the illuminance, for example, set time references such as late night time period and other time periods. The cycle of turning on and off, or the cycle of increasing the illuminance and reducing the illuminance does not have to be once a day, and can be set according to the needs of increasing the nutritional content of vegetables.

Next, by operating the operation switch of the operation panel 5 provided on the door of the refrigerator 100, it is possible to switch between lighting and extinguishing of the LED. In step 49, the operation panel receives the switch input, turns on the light display when the LED is turned on, turns off the light display when it is off, and sends status data to the control board. In step 50 , the control board that has received the signal turns on or off the two LEDs 34 based on the data. By making it possible to select the lighting and extinguishing of the LED by the switch operation, the user who hardly keeps the leafy vegetables can turn off the light, or the light can be turned off by the switch operation during winter when there are few leafy vegetables.

In addition, the operation panel is not limited to being installed outside the refrigerator, but may be installed inside the refrigerator. The instruction to operate the lighting in the refrigerator from the operation panel can also be converted into a signal by an IC converter installed in the residence from a mobile phone or the like via the Internet, and the instruction can be sent to the control device in the refrigerator through a wired or wireless light wire or the like.

In addition, the types of light irradiation that can be selected by the user are not limited to two types of on and off, but if a three-stage control of four lights on, two lights on, and lights off is provided, it is possible to focus on the photosynthetic effect. Set to 4 lights, set to 2 lights when it is only required to be a light in the refrigerator when the door is opened, etc., set to turn off the lights when energy saving is important. In addition, if the three stages of 4 lights on, 2 lights on, and lights off are combined with the strong, medium, and weak temperature settings of the vegetable room, the following three proposals can be made for the vegetable room as a whole: Suitable for leafy vegetables "Strong" for the temperature environment of the refrigerator; "Medium" for the preservation effect of continuously or intermittently lighting the refrigerator interior lights in the usual vegetable compartment; "Weak" for the energy-saving vegetable compartment that does not illuminate while raising the temperature setting ". Since the setting of light irradiation can not be designed on the operation panel, the operation panel interface is simplified. In addition, the LED may be turned off in conjunction with "energy saving" and "power saving mode" which can be set on the operation panel.

Finally, when the power of the refrigerator 1 itself is reset due to unplugging or power failure in step 53, the state at this time is stored, and when the power is turned on again, step 40 can be returned to start from the state before the power reset. The above explained turning on 2 lights, turning on 4 lights, and turning off the lights. You can increase or decrease the lights one by one, or use 3 or 4 lights as a group. For weak lighting, you can Illumination is performed continuously regardless of door opening and closing, and necessary illumination can also be performed according to the purpose.

By the control as described above, the effect of the light reaction of photosynthesis can be obtained when four lamps are turned on, and the effect of the dark reaction of photosynthesis can be obtained when two lamps are turned on. In addition, by alternately lighting each of a plurality of LEDs, the life of the LEDs can be extended, and there is no need to replace the light irradiation device during the life of the refrigerator, and since it can be installed on the back, it is necessary to prevent condensation. The degree of airtightness can be improved, and inadvertent touch by the user can be blocked and prevented, thereby ensuring safety. In addition, the timing of light irradiation does not need to be considered when the door is closed, and the above-mentioned control can always be turned on without recognizing the door opening and closing, so there is no need to use a door switch as a device for recognizing door opening and closing. The components can constitute the system itself in a cheap and energy-saving manner. Of course, it is possible to freely send a signal when the door is opened or when the door is closed through the setting of the microcomputer to perform switching between lighting and extinguishing, and switching of illuminance levels.

In addition, about 100 Lx can be secured with a current value smaller than the rated value, and the current value can be increased so that about 300 Lx can be secured to control lighting. Moreover, when the luminance of LED34 single falls by a year-round change, you may increase the number of objects of LEDs lit simultaneously, and may control so that illuminance may be ensured.

In addition, in a refrigerator that blows cold air into the vegetable compartment like other compartments instead of cooling the vegetable compartment by radiation, if the moisture generated during defrosting is blown into the vegetable compartment, it will be possible to ensure water, so it can further promote photosynthesis. Circulation of cold air and light irradiation from a light source are performed completely independently. That is, the circulation of the cold air blows the cold air to the necessary positions according to the detected temperature in the refrigerator in accordance with the operation of the fan and the operation of the damper. On the other hand, for light irradiation, strong illumination is performed at intervals for photosynthesis, and irradiation from a weak light source is continuously performed when a door is opened or the like. Furthermore, in the vegetable room etc., cool air is circulated to the periphery and upper part of a storage container, etc., but the amount of cold air circulated is reduced toward food. By circulating this small amount of cold air, the carbon dioxide existing in the refrigerator is efficiently supplied, and the dark reaction of photosynthesis proceeds.

Fig. 11 is a graph showing test results comparing changes in glucose and vitamin C in rapeseed stored for 3 days according to light intensity and irradiation time in 1 day. The vertical axis represents the amount of each component under each condition as a percentage based on the amount of each component of rapeseed rape stored without irradiation (non-irradiation) for 3 days after 3 days. That is, the 100% line in the figure shows that the amount of each component after 3 days has not changed compared with the time of non-irradiation, and they are equivalent. As shown in Figure 11, the result 60 is the result of comparing the increase of each component of rapeseed three days later when irradiated with light of about 260 Lx for 3 hours a day with that of the non-irradiated time, and the reducing sugar and vitamins are more than the non-irradiated time. . In addition, Result 61 is the test result at about 100Lx, and the effect is reduced, but in the case of the structure as above, it has a sufficient effect as a light inside the refrigerator, and in a dark room, the type or label of the stored food can be recognized. , such as canned beverages and condiments or vegetables and fruits. Therefore, for the light reaction of photosynthesis, it is sufficient to irradiate 300Lx for 3 hours a day, and the remaining 21 hours can be irradiated to less than 100Lx, which reduces the light reaction, or dark reaction can be produced by turning off the light. The test result is the result 62 in FIG. 11 .

Fig. 12 is a perspective view of another vegetable compartment for implementing the present invention, and Fig. 13 is a cross-sectional view thereof. In Fig. 2, the storage container 30 is made of a non-transparent material, and the second storage container 31 is made of a light-transmissive material, but as shown in Fig. 12, the second storage container 31 can also be made of a non-transparent material, and The optical material constitutes a part of light irradiated from the light irradiation device 32 on the back thereof, and a light transmission window 40 is provided. At this time, the constituent material of the housing container 30 may be light-transmitting or non-light-transmitting.

By adopting the structure as above, the light irradiated into the second storage container 31 for storing leafy vegetables is reflected at the irradiated position in the container, and the light beams of the LEDs can be irradiated on the vegetables without loss, and further improvement can be achieved. The shielding property of the light irradiated to the food stored in the storage container 30 . In addition, if irregularities are provided on the surface of the second storage container 31, scattered reflection or scattering will occur in the container, so even a highly directional LED can promote the effect of photosynthesis in a wide range.

Fig. 14 and Fig. 15 are cross-sectional views of another vegetable compartment for implementing the present invention. In Fig. 2, the storage container 30 is made of a non-transparent material, and the second storage container 31 is made of a light-transmissive material. However, as shown in FIG. The storage container 30 is made of a material, and the light irradiation device 32 or the mounting substrate 33 is tilted to irradiate light into the storage container 30 and block the light from being irradiated into the second storage container 31 .

Through the above structure, generally, leafy vegetables with large crowns can be stored in the lower storage container 30, and small and fine root vegetables that are hardly suitable for light irradiation can be stored in the second storage container 31 at the top. Emissions are better. In addition, as shown in FIG. 15, the same effect can be obtained by forming only the light-irradiated portion with a light-transmitting material and providing a light-transmitting window 40. In addition, in this case, since it is surrounded by a full-surface reflective material, there is an effect of increasing the effect of irradiated light.

Fig. 16 is a perspective view of another vegetable compartment for implementing the present invention. In FIG. 2 etc., the light irradiation device 32 is installed on the plane of the second container 31, but as shown in FIG. 16, it may be arranged on the side. Or, it is installed on the inner side of the upper part of the vegetable compartment 300, and then the light irradiation device 32 is tilted, or the light irradiated obliquely in the direction of the LED reaches the entire interior of the storage container 31 by oblique irradiation, and is reflected from the surface of the container. It is effective to use the above method to generate scattered reflection or scattering of light in the container by reflection from the position where the unevenness is further provided on the surface of the container.

With the above structure, the light emitted from the side or the inner side of the top is reflected on the opposite side made of plastic material, so the light is not wasted, and it is more effective for the preservation of vegetables than other storage containers. The door light does not leak out of the refrigerator, so it can more effectively function as a refrigerator interior light, and can also improve the effect of publicity on the counter. In FIG. 16 , the light source is placed on the side, that is, in the center relative to the inside, but for lighting and photosynthesis in the refrigerator, the back is an ideal position that is easier to reflect than the center.

Fig. 17 is an external view of a refrigerator of another structure, and Fig. 18 is a cross-sectional view of its vegetable compartment. In Fig. 17, 1 is a refrigerator body, which is composed of the following parts: a refrigerator compartment 100 with two opening and closing doors that are opened from the center to the left and right is arranged on the top of the refrigerator 1; The ice-making compartment 500 of the ice-making compartment; the freezer compartment 200 provided with an opening and closing door under the ice-making compartment 500; As shown in Figure 18, in the vegetable compartment 300 arranged in the vertical direction, it is arranged from the top: 31a, 31b suitable for the size of small fruits and potatoes as a draw-out type container; 31c for small vegetables; 31d for jars or large vegetables. The elements 32a, 32b, and 33c can irradiate light to each storage container by the light irradiation device.

With the configuration as described above, the same effect as that of the light irradiation from the light source described above can be obtained. Also, if only the element 32b is used, the storage container 31c stores leafy vegetables, and the storage containers 31a and 31b store root vegetables unsuitable for light irradiation, so that various types of vegetables can be stored. In addition, in the case where a plurality of light irradiation devices 32 are provided, in addition to the light irradiation device 32 composed of yellow LEDs, the light irradiation device 32 composed of red LEDs and the light irradiation device 32 composed of ultraviolet LEDs may be provided. Irradiation devices with different colors, such as red light for leafy vegetables suitable for photosynthesis, ultraviolet light for foods that want to inhibit bacterial growth, and yellow light for foods that want to have a balanced effect of any color. If such a light irradiation device with various wavelengths that is always on is used together with the already described control content such as increasing the illuminance during defrosting, etc., it is possible to illuminate when the door is opened, and to suppress the adverse effect on vision. Influence. In addition, if the LED34 in the light irradiation device 32 monomer is set to LED34 of multiple colors, such as different colors such as red and cyan, and constitutes the light irradiation device 32 respectively, then a plurality of wavelengths can also be generated in the light irradiation device monomer. Therefore, the vegetables can be formed in various light forms, and the color of the light is more warm than the monochrome red light, so the appearance of the product and the appearance of the preserved food are better. The light source described above simplifies the structure and wiring of a plurality of LED elements of optical semiconductors provided on the mounting substrate 33, but it is also possible to arrange one LED element on one substrate, or to arrange one LED on a refrigerator. Refrigerator interior. That is, one element with a wavelength of about 600nm is installed on the inner side of the vegetable compartment, and as a countermeasure to simultaneously respond to lighting in a lighted state with weak illuminance and preservation of vegetables with high nutritional value, it can be further installed on the lower inner side of the refrigerator compartment. A component with a wavelength of 600nm is used as a light for weak illumination. In addition, by controlling the applied voltage at the time of defrosting and at a predetermined time after defrosting, the illuminance is increased from weak to strong, so that the irradiation at night can be increased, and the effects of reducing sugar and vitamins can be generated. Alternatively, one LED that emits ultraviolet light may be placed on the inlet side of the refrigerator, and placed in a freezer that rarely holds canned drinks that require protection from ultraviolet decolorization. In this case, it is possible to sterilize by always lighting up, or turning off when the door is opened, and turning on when the door is closed. In any case, ultraviolet light, red light, etc., are not directly irradiated to the eyes when the door is opened, or are irradiated to the eyes in a single color. Furthermore, if it is combined with LEDs of other wavelengths such as 600nm, the inside of the refrigerator can be inspected by emitting a warm light close to natural light, so it is possible for the user of the refrigerator to see the food or take it into the hand without any confusion. Reassuring feeling of strangeness and worry.

In the above description, the light shielding member that shields light from the light source and the position where light is not irradiated are mainly described by the structure of the housing container. However, there is also a refrigerator compartment without a storage container, for example, a structure in which shelves are provided to store food separately. In the structure of each shelf as a storage member, for example, a light-shielding member may be provided in the structure shown in FIG. 2 or FIGS. 12 to 16 . For example, the shelf can use a light-transmitting transparent or net-like structure or an opaque material, or set a light irradiation window on a part of the shelf, or set it as a structure that allows the shelf to scatter light. In addition, in the structure of FIG. 4, the light irradiation device 32 is embedded and fixed in the air duct 14, but it may be arranged outside the air duct 14 as shown in FIG.

With the structure as above, the same effect as described above can also be obtained. In addition, the light irradiation device 32 is installed on the inner wall of the refrigerator, and the air duct 14 does not need to be disassembled when replacing or removing, so it is easy to replace. effect, and it is easy to separate from the insulation material of the heat insulation component, and the recovery of the insulation material is easy.

The light irradiation device 32 of the present invention is installed in the vegetable compartment 300 , but may be installed in the refrigerator compartment 100 , the freezer compartment 200 , the ice making compartment 400 , and the switching compartment 500 . In recent years, since the capacity of the vegetable compartment becomes insufficient or the vegetables are stored in the refrigerator for the reason that the temperature is lower than that of the vegetable compartment, the same effect can be obtained. In addition, there is an effect as a refrigerator interior lamp in any room, and in the case of controlling and using it only for a short time at intervals, LEDs with wavelengths other than about 600nm, such as ultraviolet rays, can be used in any room alone. In that case, it also has the effect of sterilizing ice and preserved food and increasing vitamin D in mushrooms without affecting the color change of bottled or canned tea or fruit juice.

In the present invention, as described above, a storage container for storing vegetables is provided on one side of the vegetable compartment, and a light irradiation member is arranged on the back surface of the storage container. By providing the light-shielding member in this storage container, it is possible to have a surface that is irradiated with light and a surface that is not irradiated with light.

In addition, in the present invention, the light source included in the light irradiation part is designed as a semiconductor light-emitting element, and it becomes a brown LED with a peak output wavelength of about 600nm in the visible light region, so it does not adversely affect the visual effect of food.

In addition, the present invention is provided with a plurality of LEDs as light sources of the light irradiating means, and the LEDs are turned on or off at every fixed time, respectively, or are controlled so that the LEDs are turned on or off at every fixed time and not at the same time during the operation of the refrigerator. Turning off all the LEDs, or increasing the number of LEDs that are lit simultaneously when the brightness of a single LED decreases after several years of use, is easy to use and has a large energy-saving effect. In addition, if the LEDs are divided into a plurality of LED groups and each LED group is controlled, the structure is simplified.

In addition, by controlling the number of LEDs to be turned on, it is set to irradiate with high-intensity light for several hours a day, and to irradiate with low-intensity light in other periods, so that it is possible to obtain a product with good storage stability and energy saving. Effect.

In addition, the present invention operates the operation of the refrigerator from the operation panel or remote controller provided on the refrigerator door, the operation panel in the refrigerator, or a mobile phone through communication, for example, the light irradiation function can be stopped, and the refrigerator compartment can be operated at the same time. temperature settings and lighting.

In addition, in the present invention, the food preservation performance can be further improved by increasing the illuminance of light to be irradiated during a special period of time such as defrosting and several hours thereafter.

In addition, the refrigerator of the present invention is equipped with: a light irradiation device that irradiates light with a peak wavelength of about 590nm to 600nm from the back; Lighting inside the refrigerator. In addition, it is installed on the back of the storage container, or installed to irradiate obliquely from the inside such as the side or the top, so the light is irradiated on the whole, and the nutritional content can be increased without deteriorating the appearance of the vegetables. In addition, the light irradiation device of the refrigerator of the present invention irradiates LEDs at intervals, or installs a plurality of LEDs and controls them to turn on each LED alternately, so that the lifetime of the LEDs can be extended.

As described above, the present invention uses single-color light-emitting diodes or a plurality of them in combination to irradiate vegetables and other foods with light, control photosynthesis, etc., to obtain food preservation effects, or to generate reducing sugars and increase vitamin C to become Nutrient measures, or effects such as sterilization are obtained. The above has described a device that uses the plurality of diodes individually or in groups, connects them in parallel to a power source, and provides parts that emit light and do not emit light, etc., thereby controlling not to use excessive energy, and having a long life without Device replacement is required and energy is used without waste. Next, another control circuit configuration and operation will be described with reference to FIG. 20 . Fig. 20 is an electrical circuit diagram when the light irradiation device is turned on by a method different from that of Fig. 7 described above. As shown in FIG. 20 , LEDs 34 a , 34 b , 34 c , and 34 d and a current limiting resistor that determines the value of the current flowing through the LEDs are provided in series to suppress the current to several tens of mA or several mA. Furthermore, the switching cycle of the LED is consistent with the input of the transistors connected in series, and the signal is output from a control device such as a microcomputer, thereby forming an electrical circuit that cycles the LED on and off, and when the LED is turned on, you will not feel the rapid flickering. A cycle (for example, about 4kHz) is regarded as a cycle, during which the LED is alternately turned on/off.

In addition, the ratio of energization/disconnection (conduction rate) can be adjusted arbitrarily by a control device such as a microcomputer that controls the switching of the transistor. FIG. 21 is a graph showing the energization rate, that is, the ratio of energization time in one cycle. By adjusting the energization rate, the illuminance of the entire light irradiation device can be adjusted. Also, the lifetime corresponding to the illuminance of the LED depends on the energization time. However, if an off-time is provided even when the LED is turned on as in this method, the lifetime of the LED can be extended for that time. In addition, by setting the cycle of power-on/off to be faster than the perception of human eyes, flickering of LED light can be prevented from being seen. In addition, with this electric circuit, the consumption current is reduced, thus further saving energy. Such a period may be set in advance and may be freely selected as required.

As the energization time increases, the illuminance of the LED decreases due to deterioration, so by appropriately adjusting the ratio of energization/off time (conduction rate), the illuminance of the LED can be kept constant for a long time. FIG. 22 is a timing chart showing an example of changing the energization rate. When the power supply of the refrigerator is turned on, it is first turned on with an initial energization rate of 60% (step 50). When 1 year has passed since the power was turned on (step 51), change the energization rate to 70% (step 52); ), change the energization rate to 80% (step 54). As for the energization rate and usage time, the characteristics such as illuminance vary depending on the type and number of light-emitting elements used. Therefore, if the data is grasped and the values are selected, adjustments can be made so that the minimum necessary illuminance can always be obtained. Furthermore, by further combining with the change of the number of lighting objects as described in FIG. 7, not only an efficient device can be obtained, but also a device that does not need to be replaced during the use of the refrigerator can be obtained. 22 and 23 described above, the number of LEDs to be turned on in combination with the operation time is increased to increase the energization rate. Therefore, for example, by providing a switch that short-circuits a part of the current limiting resistor, a structure capable of detecting and changing the illuminance can be obtained.

As shown in FIG. 4 , the light source device having a structure in which each LED in series described in FIG. 20 is switched on and off at the fastest cycle can be collectively protected by a translucent cover 35 . Thus, it can be fixed so that the irradiation angle does not change due to the vibration of the refrigerator, and the back is covered with a seal 36 to prevent a short circuit of the circuit. In addition, in order to prevent condensation in the cover 35 , by embedding the ring 38 to improve closeness, cut off cold air, prevent dew condensation on the mounting substrate 33, and light scattering caused by water droplets. In addition, as shown in FIG. 19 , the cover 35 has a protruding portion 39 having a shape that prevents the container from colliding with the surface of the cover, thereby preventing light scattering, damage to the mounting substrate 33 and LED 34 , and failure due to damage to the cover surface.

Alternatively, as shown in FIG. 18 , for the power supply device described in FIG. 20 , which connects LEDs in series and switches them on and off at a fast cycle without causing human eyes to feel flickering, LEDs of different specific wavelengths can be respectively arranged in the vegetable compartment. device, and connect them in series. That is, as shown in FIG. 18 , in the vegetable compartment 300, there are arranged from the top: 31a, 31b which are pull-out type storage containers suitable for the size of small fruits and potatoes; 31d suitable for preservation of bottles and large vegetables, elements 32a, 32b, 33c can irradiate different types of light of specific frequency to each storage container in the light irradiation device. With such a configuration, the same effect as that of the light irradiation of the power source already described can be obtained. If only the element 32b is used, the storage container 31c stores leafy vegetables, and the storage containers 31a and 31b store root vegetables unsuitable for light irradiation, so that various types of vegetables can be stored. In addition, in the case where a plurality of light irradiation devices 32 are provided, in addition to the light irradiation device 32 composed of yellow LEDs, the light irradiation device 32 composed of red LEDs and the light irradiation device 32 composed of ultraviolet LEDs may be provided. Light irradiation devices with different colors, such as red light for leafy vegetables suitable for photosynthesis, ultraviolet light for foods that want to inhibit bacterial growth, and yellow light for foods that want to have a balanced effect of any color. If such a light irradiation device with various wavelengths that is always on is used together with the already described control content such as increasing the illuminance during defrosting, etc., it is possible to illuminate when the door is opened, and to suppress the adverse effect on vision. Influence. In addition, if the LED34 in the light irradiation device 32 monomer is set to LED34 of multiple colors, such as different colors such as red and cyan, and constitutes the light irradiation device 32 respectively, then a plurality of wavelengths can also be generated in the light irradiation device monomer. Therefore, the vegetables can be formed in various light forms, and the color of the light is more warm than the monochrome red light, so the appearance of the product and the appearance of the preserved food are better. The light source described above simplifies the structure and wiring of a plurality of LED elements of optical semiconductors provided on the mounting substrate 33, but it is also possible to arrange one LED element on one substrate, or to arrange one LED on a refrigerator. Refrigerator interior.

As above, the refrigerator of the present invention is configured to combine red and cyan colors instead of a single color, or to increase the illuminance in the middle of the night for a power supply that has the effect of preserving food such as vegetables. LEDs of multiple specific frequencies with the same frequency and different frequencies are turned on or off at the same time, so by controlling without wasting energy, not only when the door is closed, but also when the door is opened, it can be used as When used for refrigerator lighting, it has the effect of not damaging the appearance of vegetables and other foods, increasing the nutritional content, and being able to be used as a refrigerator interior light. Furthermore, the power supply of the refrigerator of the present invention irradiates the LEDs at intervals, and additionally controls and alternately sets each LED to be turned on instantaneously, or is switched at a predetermined cycle so that it is not turned on, and energy-saving control can be performed. Since the lifetime of LED can be extended by this, there exists an effect in which the refrigerator with high efficiency can be obtained. In addition, a variety of LEDs with different specific wavelengths are installed corresponding to the food contained, that is, each refrigerator compartment or shelf is installed, and the semiconductor of the light source that irradiates light is selected through the operation of the operating device installed inside or outside the refrigerator. The light-emitting element is switched on and off to select the wavelength of light, or it is cut off according to a preset time, thereby obtaining a refrigerator that is easy to use. For example, an LED selection switch is set on the temperature adjustment panel in the refrigerator to selectively light up LED substrates with different wavelengths, or a variety of LEDs with different wavelengths are installed on one LED substrate, and the desired wavelength type is selected from among them. LED control, etc., can select the LED of the wavelength corresponding to the purpose of adding vitamins and improving nutrition, etc., and make it light up according to the preset control content.

Claims (20)

1. refrigerator is characterized in that comprising:

Be configured in inboard in the refrigerator, a plurality of light sources of the yellow of the visible rays zone wavelength of irradiation 590～600nm or the light of Yellow Red;

Can control above-mentioned a plurality of light source separately light, extinguish be arranged on control device on the refrigerator main body.

2. refrigerator is characterized in that comprising:

Be configured in inboard in the refrigerator, a plurality of light sources of the yellow of the visible rays zone wavelength of irradiation 590～600nm or the light of Yellow Red;

Be configured in the above-mentioned refrigerator, can hold the storage container of food;

Be arranged on the above-mentioned storage container, block light-blocking member, wherein from the light of above-mentioned light source

In above-mentioned storage container, have the position of irradiates light and the position of irradiates light not.

3. refrigerator according to claim 1 and 2 is characterized in that:

Above-mentioned light source is set to semiconductor light-emitting elements.

4. refrigerator according to claim 1 is characterized in that:

A plurality of storage containers that can hold food that are configured in the above-mentioned refrigerator are set, make light from above-mentioned light source, make light reflection or scattering to the lip-deep concavo-convex irradiation that is arranged on above-mentioned storage container.

5. refrigerator according to claim 3 is characterized in that:

Light or extinguish in the time that sets in advance as the semiconductor light-emitting elements of above-mentioned light source.

6. refrigerator according to claim 3 is characterized in that:

To be divided into a plurality of groups as the semiconductor light-emitting elements of above-mentioned light source, the above-mentioned light source of each group control is lighted, extinguished.

7. refrigerator according to claim 3 is characterized in that:

In the refrigerator running, control is as the number of lighting of the semiconductor light-emitting elements of above-mentioned light source.

8. refrigerator according to claim 6 is characterized in that:

In the refrigerator running, control is as the group number of lighting of the semiconductor light-emitting elements of above-mentioned light source.

9. refrigerator according to claim 8 is characterized in that:

By control as the number of lighting of the semiconductor light-emitting elements of above-mentioned light source or the current on time of above-mentioned light source, the time period that time period that the light with high illumination shines is set, shines with the light of weak illumination.

10. refrigerator according to claim 1 is characterized in that:

In defrosting or thereafter a few hours, strengthen the illumination of the light that shone.

11. refrigerator according to claim 3 is characterized in that:

Possess: cover semiconductor light-emitting elements as above-mentioned light source, make light by in do not make with above-mentioned refrigerator in be communicated with the cover that blocks cold air, wherein

Above-mentioned semiconductor light-emitting elements and above-mentioned cover are fixed on the refrigerator main body.

12. refrigerator according to claim 3 is characterized in that:

When the semiconductor light-emitting elements of lighting as above-mentioned light source, switch on/cut off with the fast period circulation of not feeling to glimmer.

13. refrigerator according to claim 12 is characterized in that:

Reduce with the illumination of semiconductor light-emitting elements or the running elapsed time as one man, can adjust the ratio of energising/cut-out.

14. refrigerator according to claim 10 is characterized in that:

Above-mentioned control device is controlled the number of above-mentioned a plurality of light sources or the current on time in cycle of the energising that circulates is changed, and makes the illumination of strengthening the light that shone in certain period of time.

15. refrigerator according to claim 11 is characterized in that also comprising:

Covering is as the semiconductor light-emitting elements of above-mentioned light source, make light by in do not make with above-mentioned refrigerator in be communicated with block cold air pass through the sealed cover of sealing gasket.

16., it is characterized in that according to claim 1,14, any one described refrigerator of 15:

By being arranged on the control device in the refrigerator or being arranged on the operation of the outer operating means of refrigerator, stop to carry out illumination and penetrate function.

17., it is characterized in that according to claim 1,14, any one described refrigerator of 15:

By being arranged on the control device in the refrigerator or being arranged on the operation of the outer operating means of refrigerator and switch is penetrated from the illumination of above-mentioned light source, thereby be provided with to such an extent that can change temperature in the refrigerator.

18., it is characterized in that according to claim 1,14, any one described refrigerator of 15:

Be provided with and divide into a plurality of refrigerator chambers in the refrigerator, the above-mentioned light source of configuration in any one at least in the refrigerator chamber that is set to temperature of refrigerating chamber, vegetable compartment temperature, freezer temperature more than or equal to 0 ℃, from the direction of illumination of the light that is configured in the light source in the above-mentioned refrigerator chamber with the cold air of above-mentioned refrigerator indoor circulation what move almost is being same direction just or in the other direction.

19. refrigerator according to claim 3 is characterized in that:

By being arranged in the refrigerator or the operation of the operating means that refrigerator is outer, select light-struck semiconductor light-emitting elements that carries out as above-mentioned light source, select light wavelength.

20. refrigerator according to claim 15 is characterized in that:

By being arranged in the refrigerator or the operation of the operating means that refrigerator is outer, select light-struck semiconductor light-emitting elements that carries out as above-mentioned light source, select light wavelength.

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