JP2007309631A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator improving freshness retainment by using a light source having a wavelength that is comparatively safe to the human body, and enhancing a bacteriostatic effect cleanly maintaining the refrigerator. <P>SOLUTION: An illumination light source 1 and a second light source also having a function other than illumination are arranged in a storage space in a refrigeration chamber 6 within a visible range of a user, and the second light source 2 is composed such that it has the wavelength having no harmful affect on the human body, material composing the refrigerator, or preserved objects. By this, the refrigerator is cleanly maintained by enhancing the bacteriostatic effect, and the refrigerator improving freshness retainment can be provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator characterized in that a white light source for illumination and a light source of other colors are arranged in a storage space of a storage room within a visible range of a refrigerator user.

  In recent years, due to concerns about food poisoning caused by enterohemorrhagic Escherichia coli O-157 and Salmonella, SARS, and chicken flu, refrigerator users are interested in food hygiene to keep food and food storage locations as clean as possible. Very expensive. According to a survey conducted by the Japan Electrical Manufacturers' Association in FY2004, as a "appliances image of home appliances useful for health and clean living", in the case of refrigerators, the growth of bacteria in the warehouse was first, and the second place was It is mentioned that it is easy to clean, and that the interior is not easily soiled in the third place. In other words, refrigerators are required to produce clean air and clean air as home appliances useful for healthy and clean living. The reason why the refrigerator user wants the refrigerator to clean is that when the user cleans the refrigerator himself, the refrigerator door is kept for a long time to prevent the temperature inside the refrigerator where food is always stored. Opening is considered to be due to concern about deterioration of food. Therefore, germs such as bacteria and sputum floating in the air in the refrigerator or adhering to foods can cause the fermentation and decay of foods to progress. Have been devised. For example, a method of irradiating ultraviolet light having a main wavelength of 253 nm emitted from a low-pressure mercury lamp (sterilizing lamp) of continuous lighting, or a photocatalyst excited by the energy of ultraviolet light contained in sunlight or a fluorescent lamp, This method uses a method that generates strong OH radicals and breaks down the DNA helix of the microorganisms by its oxidizing power, inactivates the microorganisms themselves, and does not produce next-generation solids, but suppresses reproduction and suppresses the microorganisms. (See Patent Document 1).

FIG. 7 shows a partially enlarged side sectional view of a refrigerator compartment of a conventional refrigerator described in Patent Document 1. As shown in FIG. In the refrigerator 100 in which the cold storage chamber 102 and the cold air duct 103 are defined in the heat insulating box 101, and the cold air heat-exchanged with the cooler 109 disposed in the cold air duct 103 is circulated to the cold storage chamber 102 by the blower 104. The ultraviolet irradiation device 106 capable of irradiating ultraviolet rays is provided, and the ultraviolet irradiation device 106 irradiates the inside of the refrigerator 102 and the cold air duct 103 with ultraviolet rays, so that the storage chamber and the duct are irradiated with ultraviolet rays. It becomes possible to sterilize the room and the duct. About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below. When the compressor and the blower 104 of the cooling device are operated, the cold air cooled by the cooler 9 is sucked upward by the blower 104 and discharged into the refrigerator compartment 5 from the cold air discharge port 23. And after circulating and cooling in the refrigerator compartment 5, the cool air returns to the cool air duct 103 via the return cool air duct 103. At this time, food or the like with bacteria or mold attached may be stored in the refrigerator compartment 102, and the bacteria or mold or the like are peeled off from the food or the like by the circulating cold air, and the cold air duct 103 together with the cold air. Returned inside. In this case, the cold air that has returned to the cold air duct 103 is discharged from the plate glass of the ultraviolet irradiation device 106 when the ultraviolet irradiation device 106 attached to the partition plate 7 is energized. Ultraviolet rays are irradiated. Thereby, the cold air containing germs such as bacteria and mold is sterilized by ultraviolet rays, and is cooled by the cooler 9 in a clean state, and is discharged again from the blower 104 into the refrigerator compartment 102. Therefore, cold air circulates in the refrigerating chamber 102 and the cold air duct 103 in a state where the germs are killed, and it is avoided in advance that the germs adhere to the food stored in the refrigerating chamber 102 and the food easily decays. Will be able to.
JP 2002-350039 A

  However, among the ultraviolet rays irradiated by conventional ultraviolet irradiation devices, wavelengths near 250 nm to 260 nm destroy DNA (bacterial genome) necessary for life support and transmission of genetic information, and induce a thymine timer. Two adjacent thymine molecules are covalently bound to interfere with regeneration, have a high relative bactericidal power that stops and kills bacteria and other activities, sterilizes very effectively, and simultaneously irradiates the human body If it is installed in a refrigerator that is frequently used in daily life at home, install it in a duct so that it is not directly irradiated to the human body during use. Measures to ensure the safety of the user, such as turning off the lights when the door is opened. Irradiation with ultraviolet rays over a long period of time has the effect of promoting deterioration of synthetic resins often used in refrigerators such as ABS and PE, and lipid oxidation for long-term stored foods. In the premise refrigerator, it was necessary to shorten the irradiation lighting time such as irradiating only for a certain period of time or limiting specification conditions such as irradiating instantaneously or for a short time.

  The present invention solves the above-described conventional problems, and has a long wavelength and a relatively safe wavelength range as a light source for illumination inside the storage room and a light source for preventing the growth of fungi and mold in the refrigerator. By using it, continuous irradiation or flashing irradiation can be performed.

  In order to solve the above-described conventional problems, the refrigerator of the present invention has a storage room that is insulated in the refrigerator body, a light source for illumination provided in the storage room, and functions other than those for illumination and 280 nm or more. And a second light source that emits light having a wavelength of 600 nm or less.

  As a result, the wavelength is in the range of 280 nm to 400 nm, which is the ultraviolet A and B region, which is a relatively long wavelength, and the wavelength is in the visible region of 400 nm or more, particularly from 400 nm to 500 nm. It is configured to emit blue light having a peak wavelength in the vicinity and green light having a wavelength of 500 nm to 600 nm, and can be continuously irradiated or flashed.

  In addition, it prevents the deterioration of synthetic resins often used in refrigerators, and further suppresses the deterioration of quality such as lipid oxidation for foods stored for long periods of time, and also keeps the refrigerator clean by constantly suppressing the growth of bacteria and straw. Provide a refrigerator equipped.

  The refrigerator of the present invention prevents deterioration of synthetic resins and the like often used in refrigerators, and further suppresses quality deterioration such as lipid oxidation for long-term stored foods, and always suppresses the growth of bacteria and straw and keeps the refrigerator clean. Because it has a function to maintain, the hygiene in the compartment is maintained under conditions that do not adversely affect the human body, it is possible to delay discoloration and rot odor caused by microorganisms in food, and net generation on the surface of stored items, A refrigerator with improved shelf life can be provided.

  The invention according to claim 1 is characterized in that an illumination light source and a second light source having a function other than illumination are arranged in a storage space of a storage chamber in a compartment of the refrigerator main body.

  As a result, the wavelength is in the range of 280 nm to 400 nm, which is the ultraviolet A and B region, which is a relatively long wavelength, and the wavelength is in the visible region of 400 nm or more, particularly from 400 nm to 500 nm. It is configured to emit blue light having a peak wavelength in the vicinity and green light having a wavelength of 500 nm to 600 nm, and can be continuously irradiated or flashed.

  In addition, it prevents the deterioration of synthetic resins often used in refrigerators, and further suppresses the deterioration of quality such as lipid oxidation for foods stored for long periods of time, and also keeps the refrigerator clean by constantly suppressing the growth of bacteria and straw. Provide a refrigerator equipped.

  In addition, when a light source that emits light against bacteria, mold, dirt, etc. is used when the second light source contains bacteria, mold, etc. It is possible to check the state of dirt in the storage and to notify the refrigerator user of the state of dirt in the storage space. Further, by changing the wavelength of the second light source, for example, in the case of blue, an image of coldness is given, and in the case of changing to a red color, an image of abnormal temperature rise with respect to the vision of the refrigerator user It is possible to notify the state of the storage space to the visual sense of the refrigerator user.

  According to the second aspect of the present invention, when the door of the storage room where the illumination light source and the second light source are arranged is opened, the light from the illumination light source and the second light source is visible to the refrigerator user. It is arranged to be within the range.

  As a result, the user can visually recognize the light when the refrigerator door is opened, so that the user can always confirm the operating state of suppressing the growth of bacteria and mold in the refrigerator, and visually An object of the present invention is to provide a refrigerator having an added value effect that leads to appeal for products because it can recognize additional functions.

  Further, in addition to brightly illuminating the refrigerator user's hand with the illumination light source, the second light source can avoid adverse effects on the human body when it does not have ultraviolet rays in the low wavelength region. Irradiation within the visible range is possible. Thereby, the refrigerator user can check the situation where the second light source is functioning with respect to the stored matter.

  The invention according to claim 3 is characterized in that the second light source has a function of blinking irradiation, so that, for example, in the light in the visible region, the blue light is emitted in spite of the wavelength that hardly includes the ultraviolet region. Bacteriostatic action can be performed most effectively by flashing the included wavelength, and bacteriostasis without affecting the human body due to continuous irradiation of wavelengths in the ultraviolet region or affecting the resin. It is possible to act. Also, when the user opens the refrigerator door, it can recognize the flashing light and confirm the operation, so it can visually appeal the effect of adding functions, and the refrigerator is always kept clean as a product Can provide such a sense of security. Further, when a red color that gives a warm image is flashed and irradiated, it is possible to notify the refrigerator user's vision as a warning lamp of an abnormal temperature rise. Although the color of the light source as the warning lamp is not particularly limited, it is desirable that it is as faithful as possible to the color image held by the user. Furthermore, the type of the second light source is not particularly limited. For example, when a light emitting diode is used, the irradiation life is proportional to the lighting time, so that the life can be further extended in the case of flashing irradiation compared to continuous irradiation. It is very effective for products that require long-life performance such as refrigerators, and it is desirable because of its low versatility and high versatility.

  The invention according to claim 4 is characterized in that the illumination light source and the second light source are concentrated and arranged without being dispersed, whereby unevenness due to the member of the illumination part is formed in the storage space. By gathering without dispersing, the appearance is neat. Moreover, since the unevenness | corrugation in the wall inside a storage space reduces, the operativity of the care in the case of wiping and cleaning can be improved. Furthermore, by reducing the area of the concavo-convex portion, it is possible to reduce dirt attached to the convex and concave portions and prevent clogging. Further, when a light source for illumination and a light source for emitting a second light source having functions other than those for illumination are used at the same time, and further, when these light sources are light-emitting diodes, the light-emitting diodes for illumination and functions other than those for illumination The second light-emitting diode having both a light-emitting diode for illumination and a function other than illumination is provided by mounting a plurality of second light-emitting diodes having a plurality of light-emitting diodes on the storage chamber. Since it is mounted on one mounting board and the installation space is minimized, the storage space in the storage room is not reduced, so that it is very convenient. In addition, by using a light emitting diode as a light source for illumination, it is possible to suppress the amount of heat generation and power consumption, and it is possible to have a light source having a second function in addition to illumination. Furthermore, versatility is further improved by using a light-emitting diode as a light source having a second function installed in addition to illumination.

  The invention according to claim 5 is characterized in that the illumination light source and the second light source are arranged vertically on the wall inside the storage space, so that the whole can be irradiated uniformly. Yes, it is easy for the user to look over the stored food such as food in the refrigerator, and food can be taken in and out quickly, so it is possible to suppress the leakage of cold air by opening the door, not only suppressing food deterioration but also energy saving effect Can also be obtained.

  The invention according to claim 6 is characterized in that the illumination light source and the second light source are arranged on the front side from the center in the front-rear direction of the storage room, so that the user's eyes and the vicinity of the hand Since it is possible to irradiate with light, it is easy for the user to look over the stored items such as food in the refrigerator. In addition, when the second light source has a bacteriostatic action, it is placed in front of the center so that it is located close to the refrigerator door. It is possible to prevent the invasion of various germs such as, and it is effective.

  According to the seventh aspect of the present invention, the second light source irradiates a partitioned specific space disposed on the lower side of the storage shelf installed inside the storage space of the storage room in the compartment of the refrigerator main body. It is possible to keep the inside of the warehouse more clean by being characterized by doing. That is, the egg case that is a food imaged by the refrigerator user as the source of dirt in the place arranged on the lower side of the storage shelf installed inside the storage space of the storage room in the compartment of the refrigerator body In addition, there are water supply tanks for ice making that have a great need to always keep clean, and specific low temperature chambers that have a strong need to keep fresh food such as meat and fish in temperature zones such as chilled and partial. By intensively irradiating the space, it is possible to more efficiently suppress the growth of bacteria such as bacteria and mold. In addition, since only the second light source is uniquely arranged in these spaces, the irradiation intensity of light is proportional to the distance from the light source to the object to be irradiated. Therefore, it is possible to effectively suppress the growth of various bacteria such as bacteria and molds, and it is possible to efficiently keep the interior clean.

  According to an eighth aspect of the present invention, the refrigerator main body has a plurality of storage compartments that are thermally insulated, and the storage compartment in which the light source for illumination and the second light source are arranged is located in the plurality of storage compartments. In the range that is most easily used by refrigerator users, it is easy to use because the hand becomes brighter and the stored items stored in the refrigerator are easily visible. improves. In addition, the storage room located at the top is a space where there is a high possibility of storing various foods and medicines other than food, compared to other storage rooms, and paper milk cartons It can also be assumed that liquid items such as milk that has entered and leftovers in unstable dishes are stored, and it is possible that some of the food will be scattered when the door is opened and closed. Since it is the place where dirt is most likely to adhere to the shelf, when having a bacteriostatic action as the second light source, the refrigerator user is irradiating the light continuously, and the refrigerator user is concerned with the storage space most concerned about dirt. It is possible to enhance the bacteriostatic effect.

  According to the ninth aspect of the present invention, the storage chamber in which the illumination light source and the second light source are arranged includes a rotary door, and the user opens the rotary door. In addition, the light source from the illumination and the light from the second light source directly enter the user's eyes, so that the refrigerator user can check the lighting state of the light source while opening the door. Is possible.

  According to a tenth aspect of the present invention, in the storage room in which the illumination light source and the second light source are disposed, the second light source having both functions of the illumination light source and the illumination function when the door is opened. Is turned on, the light source for illumination is turned off when the door is closed, and the second light source having a function other than the illumination for the previous period is turned on. When the door is closed, when the door is closed, the second light source can always suppress the growth of germs such as bacteria and mold existing in the refrigerator, and the interior can be kept clean. In addition, even when the user opens the refrigerator door, the second light source has almost no adverse effect such as increasing the degree of influence on the human body or promoting lipid oxidation of food compared with ultraviolet rays. By being lit, it is possible to prevent the entry of germs such as germs and molds from the outside of the refrigerator when the door is opened, which is more effective. In addition, when the second light source has a bacteriostatic function in the visible wavelength range, when the user opens the refrigerator door, the light can be recognized and the operation can be confirmed. Since the effect of the product is visually recognized, it is easy to have an image of keeping the refrigerator clean and contributes to the appeal at the store.

  In the invention described in claim 11, the second light source has a bacteriostatic function for the food stored in the storage room in the compartment of the refrigerator body and the storage room space in the compartment of the refrigerator body. By being characterized, unlike ultraviolet rays, it is possible to avoid adverse effects caused by ultraviolet rays such as promotion of lipid oxidation of food by irradiation, promotion of deterioration of resin, and influence on human body.

  The invention according to claim 12 uses a light having a wavelength including blue of not less than 400 nm and not more than 500 nm as the second light source, and thus has a wavelength that hardly includes an ultraviolet region in the visible region. Nevertheless, bacteriostatic action can be most effectively performed by flashing and irradiating a wavelength including blue having a peak wavelength of about 400 nm to 500 nm, and blue having a peak wavelength of about 400 nm to 500 nm is obtained. The continuous irradiation of the included wavelength enables bacteriostatic action without causing adverse effects on the human body or deterioration on the resin.

  The invention according to claim 13 is characterized in that the second light source is arranged within the visible range of the refrigerator user and a warning is given when the door is opened, and the color of the second light source is not particularly limited. However, by having a wavelength in the visible region, for example, when the temperature in the refrigerator rises, the state is visually informed by changing to red or irradiating the visible region with a blinking wavelength. It is possible. Therefore, it is possible to prompt the refrigerator user to quickly close the door and stabilize the temperature in the refrigerator, and to suppress the deterioration of the quality of food stored in the refrigerator. It becomes.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view showing a state in which the refrigerator door in Embodiment 1 of the present invention is opened. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 in the same embodiment. FIG. 3 is a cross-sectional view of the mounting board portion in the same embodiment.

  1 and 2, the refrigerator main body 5 configured to be thermally insulated from the surroundings with a heat insulating material forms a storage room divided into a plurality of compartments. The uppermost storage room is a refrigeration room 6 and a refrigeration room. An ice making chamber 7 and a switching chamber 8 which are insulated and partitioned by a partition wall are arranged directly below 6. The lowermost storage room has a structure in which a freezing room 10 and a vegetable room 9 are arranged between the ice making room 7 and the switching room 8 and the freezing room 10.

  Moreover, a door (not shown) is provided in the front opening of these storage chambers, and the storage chambers are substantially sealed by closing the doors.

  In the refrigerator compartment 6, the illumination light source 1 is provided in front of the center in the front-rear direction of the refrigerator and in front of the storage shelf 12. In addition to the illumination light source 1, a light source having a bacteriostatic effect is disposed as the second light source 2 having a function other than illumination, and the illumination light source 1 and the second light source 2 are dispersed. They are arranged in a concentrated manner.

  The illumination light source and the second light source are arranged vertically on the wall inside the storage space.

  In the refrigerator compartment 6, a plurality of storage shelves 12 for arranging and storing stored items without overlapping are provided, and a part thereof is configured to be movable up and down. At the bottom, there is a specific low temperature chamber 13 with a dedicated door on the front. Mainly, the selected preserved items such as fresh food such as meat and fish and processed products such as ham and chikuwa are stored at the optimum temperature. . Further, an ice making water supply tank 14 made of a light transmissive material for supplying ice making water to the ice making device is installed on the side of the opposite wall of the specific low temperature chamber 13.

  An egg case 15 is installed between the specific low temperature chamber 13 and the ice-making water supply tank 14. Inside the refrigerator compartment 6 are seasonings and dressings in bottles and plastic bottles, foods that are always stored such as butter, cheese and jam, and drinks such as milk and juice. A wide variety of foods and medicines such as meats, vegetables, salads, side dishes, and other foods that are relatively frequently used, such as those with a long shelf life, can be stored on multiple storage shelves 12. And a storage case (not shown) on the door side, a specific low temperature chamber 13 having a dedicated door on the front surface installed at the bottom, and the like.

  Unlike the vegetable room 9 and the like, the refrigerator compartment 6 is a space where there is a high possibility that stored items other than food such as various foods and medicines are also present. Also, it can be assumed that liquid items such as milk in paper milk cartons or leftovers in unstable dishes are stored, and some of those foods are stored when the refrigerator compartment 6 door is opened and closed. It is conceivable that the dust is scattered, and the wall surface in the refrigerator compartment 6 and the storage shelf 12 are places where dirt is most likely to adhere. In addition, since there are many foods that are always available for a long time, it is also a place where it is difficult for the user to frequently remove the dirt on the shelves and walls.

  On the other hand, however, users tend to be very concerned about the dirt in the refrigerator compartment 6, and there is a high need for removing bacteria and molds and keeping them as clean as possible. In addition to the light source 1 for lighting, since the refrigerator is required to have an additional function that makes it as difficult as possible to stain, automatically removes the stain continuously and automatically, and provides a safe and clean storage space. A light source having a bacteriostatic effect is disposed as the second light source 2 having a function other than illumination.

  Here, the illumination light source is a color that makes it easy for the refrigerator user to see the food in the storage space, such as a white light source. In the first embodiment, a light emitting diode is used as the light source, but the type of the light source is not limited. That is, the mounting substrate 16 is embedded in the indoor side wall of the refrigerator compartment 6 on the left and right as viewed from the front of the door opening, and the upper surface of the mounting substrate 16 is covered with the lamp cover 11. In FIG. 3, the mounting substrate 16, the illumination light source 1, the energization terminal 3, and the heat insulating plate 4 constitute an illumination device as in the conventional example.

  A plurality of second light sources 2 are arranged at arbitrary positions between the illumination light sources 1 and mounted on the mounting substrate 16. The mounting substrate 16 is held by a spacer 18 in a concave portion on the indoor side of the side wall 17 of the refrigerator compartment, and the lamp cover 11 emits light from each light source at a certain distance from the light emitting portions of the illumination light source 1 and the second light source 2. It is mounted on the indoor side recess of the refrigerator compartment side wall 17 so as to cover the entire part. The lamp cover 11 is preferably formed of a transparent material such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, polypropylene, etc., using one material or a composite material as a base material and having diffusibility. In the present embodiment, the lighting device is embedded in the side wall of the refrigerator compartment. However, as long as stored items such as food can be irradiated through the lamp cover 11, the lighting device may be embedded in any position in the room such as the top wall or the storage shelf 12.

  Furthermore, the light irradiation intensity is not limited, and in order to improve the functional effect, if a high irradiation intensity is required, for example, the number of light emitting diodes is increased or a high luminance is selected. May be. In the first embodiment, the light emitting diode as the light source has a small calorific value, can prevent a temperature rise in the storage space, can stabilize the preservability of food, and has a low running cost. In addition, since it has excellent durability and a compact design is possible, it is highly versatile and desirable as a refrigerator specification.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the inside of the refrigerator compartment 6 is illuminated with the illumination light source 1, a forward current is passed through the energization terminal 3 to cause the illumination light source 1 to emit light, and this light travels to the lamp cover 11, and the lamp cover 11 is diffused and the inside of the refrigerator compartment 6 is irradiated. The wavelength range of the illumination light is generally called visible light, and is combined in the range of about 380 nm to 780 nm, and is generally used for home use. Or the equivalent of an incandescent lamp. When turning off the illumination, the forward current supply to the illumination light source 1 is stopped. In other words, the illumination light source 1 is for illuminating the inside of the refrigerator compartment 6 when the user opens the door of the refrigerator compartment 6 and looks at the food stored in the refrigerator compartment 6 and when putting in and out. It is desirable to irradiate the entire light without being blocked. Moreover, after the user closes the door of the refrigerator compartment 6, it is quickly turned off.

  Next, when irradiating light in the refrigerator compartment 6 with the second light source 2 to improve food preservation, a forward current is applied to the second light source 2 through the energizing terminal 3 in the same manner as the illumination light source 1. The light other than that for illumination is emitted to the lamp cover 11 and diffused by the lamp cover 11 to irradiate the refrigerator compartment 6. Moreover, what is necessary is just to stop energization of the forward direction current to the 2nd light source 2, when stopping irradiation.

  That is, the second light source 2 intended to improve food preservation is different from the illumination light source 1 for illumination. For example, the second light source 2 is not irradiated only when the door is open, but the door of the refrigerator compartment 6 is closed. In order to suppress the growth of bacteria such as fungi and fungi floating in the refrigerator compartment 6 and fungi and fungi adhering to the wall surface, it is desirable to continue irradiation. Note that the wavelength of the second light source 2 includes an ultraviolet region in the range of 280 nm to 400 nm, which has relatively little adverse effect on the human body and materials. However, since the temperature in the refrigerator compartment 6 is 10 ° C. or less, Because of the very slow growth rate, the continuous irradiation of these relatively safe ultraviolet regions suppresses the growth of bacteria attached to food and walls, improving the freshness performance. Furthermore, in the case of a wavelength in the range of 280 nm to 400 nm, since there is relatively little adverse effect on the human body, the specification should be such that the entire region of the refrigerator compartment 6 is irradiated as in this embodiment combined with a light source for illumination. As compared with the case where it is installed in the duct, it is possible to directly irradiate germs such as bacteria and fungi, so the freshness performance is further improved. In addition, when a visible region is selected as the wavelength of the second light source 2, further adverse effects such as human body and resin deterioration are eliminated, so that versatility is greatly improved.

  For example, when the second light source 2 uses a wavelength including blue which is a wavelength of 400 nm to 500 nm, it is possible to suppress the growth of mold and fungi.

  This is because the coenzyme riboflavin involved in promoting the growth of fungi that exists in the cells of the fungus becomes a photoreceptor, and mainly absorbs wavelengths from 350 nm to 490 nm, thereby causing the fungus to grow and die. Conceivable.

  Therefore, in order to confirm whether or not the effect of inhibiting the growth of bacteria can be obtained by irradiating light having a wavelength including blue, we conducted the following experiment.

First, a petri dish prepared by mixing E. coli NBRC 3972 in a medium consisting of nutrient broth diluted 150 to 200 times is prepared, and this is installed in a sterilized plastic container with an LED attached to the lid. And it preserve | saved while irradiating blue LED with a center wavelength of 450 nm in a thermostat of -1.5 degree | times. After storage for 7 days, the petri dish was taken out, transferred to a 36 ° C. thermostat, cultured for 48 hours, and then counted for the number of bacteria. In this experiment, an LED was used as light having a wavelength including blue, and the amount of light was 5 to 30 μmol / m ² s.

  As a result, in the case of no blue LED irradiation, the number of bacteria was 1480 / dish, whereas in the case of blue irradiation, the number was 210 / dish.

Next, using king salmon fillet as an ingredient instead of a petri dish, the sample was stored for 7 days in a thermostatic bath at -1.5 degrees while irradiating with a blue LED. The number of bacteria was 1.2 × 10 ⁴ cells / g, but the number of viable cells after storage increased by about 100 times at 3.1 × 10 ⁶ cells / g without blue LED irradiation. On the other hand, it was 1.1 × 10 ⁵ cells / g, confirming the effect of suppressing the growth of bacteria by the obvious blue LED irradiation.

  In addition, when the second light source 2 having a wavelength including blue is flashed and used, light reaches the back of the cell of the fungus due to instantaneous light, or light absorbed on the surface of the fungus becomes heat. It is possible to obtain a sterilizing effect instantaneously by being converted and causing a rapid temperature rise.

  As described above, it is also effective to use a xenon lamp having a wide wavelength region and a high luminance as the second light source 2 to obtain a bactericidal effect instantaneously by lysis due to a rapid temperature rise in the cell. .

  Furthermore, the same effect can be expected for a green wavelength having a peak in the vicinity of 550 nm, which is approximately 500 nm to 600 nm, and may be used. In this case, when the door of the refrigerator compartment 6 is closed, the light source for illumination is turned off, and only the second light source 2 is turned on.

  Further, since the second light source is lit in a blinking manner, the effect is improved because the light stimulus to fungi is further increased by blinking under the dark condition. In addition, since it does not include the ultraviolet region, it becomes a safer and more reliable specification, can be installed within the visible range of the user, is more versatile, and has fewer wavelength components in the near ultraviolet region. Since it is less expensive than a light emitting diode in the ultraviolet region, it is reasonable in product design.

  In addition, unlike the illumination light source 1, when the interior of the refrigerator compartment 6 is irradiated with a second light source 2 for the purpose of warning that informs the temperature status of the refrigerator compartment 6, while the user opens the door, Only when the temperature in the refrigerator compartment 6 suddenly rises, etc., it is set to illuminate or flash by interlocking with a temperature sensor in the refrigerator compartment 6 or the like. As a result, the user can visually feel the temperature rise, and easily moves to the action such as closing the door immediately in order to maintain the freshness of the food stored in the refrigerator compartment 6.

  As described above, the mounting substrate 16 is embedded in the indoor side wall of the refrigerator compartment 6 installed at the top of the refrigerator main body 5 of the present embodiment on the left and right as viewed from the door opening front. Is covered with a lamp cover 11. The mounting substrate 16, the illumination light source 1, the energization terminal 3, and the heat insulating plate 4 constitute an illumination device as in the conventional example. A plurality of second light sources 2 are arranged at arbitrary positions between the illumination light sources 1, mounted on the mounting substrate 16, in addition to the light emitting diodes that serve for illumination of the refrigerator compartment 6, in the refrigerator compartment 6. By providing the second light source 2 for keeping the food clean and improving the freshness, when the user opens the door of the refrigerator compartment 6, the illumination light source 1 brightens food and walls. It is easy to see because it is irradiated, and since it can be continuously irradiated by irradiating the second light source 2 that does not adversely affect the human body, it has a more bacteriostatic effect. improves.

  In this embodiment, the bacteriostatic effect is used to stop the growth but not kill the bacteria, but the effect is irradiated with the second light source 2 as compared with the conventional refrigerator storage. The growth rate of the bacteria of the storage object is slowed down. For example, after storage for 7 days, when the second light source 2 is not present, the rot smells, but when the second light source 2 is irradiated, it decays. It is desirable to extend the storage days so that no odor is produced. At the same time, when the number of viable bacteria is measured, it is clearly desired that the number of viable bacteria is small.

  In addition, the user can visually recognize the sterilization function for improving the freshness of the second light source 2, can provide a sense of security, and the product appeal effect is also improved. To do. The place where the illumination light source 1 and the second light source 2 are arranged is not particularly limited, but the average height of a woman who uses the refrigerator most is about 157 cm, and 60 to 160 cm is 157 cm for women. Since it is the height range in which work is most easily performed and is the height range in which it is most easy to enter the field of view, it is efficient and desirable to be disposed at a position of 60 cm to 160 cm.

  Further, in the present embodiment, the illumination light source 1 and the second light source 2 are arranged in a concentrated manner without being dispersed, so that unevenness due to the member of the illumination part is not dispersed in the storage chamber 6. By gathering, the appearance is neat. Moreover, since the unevenness | corrugation in the wall inside a storage space reduces, the operativity of the care in the case of wiping and cleaning can be improved. Furthermore, by reducing the area of the concavo-convex portion, it is possible to reduce dirt attached to the convex and concave portions and prevent clogging. Further, when a light source for illumination and a light source for emitting a second light source having functions other than those for illumination are used at the same time, and further, when these light sources are light-emitting diodes, the light-emitting diodes for illumination and functions other than those for illumination The second light-emitting diode having both a light-emitting diode for illumination and a function other than illumination is obtained by providing a mounting substrate in the storage chamber 6. Since it is mounted on a single mounting board and the installation space can be minimized, the storage space in the storage room is not reduced, which is very convenient. In addition, by using a light emitting diode as a light source for illumination, it is possible to suppress the amount of heat generation and power consumption, and it is possible to have a light source having a second function in addition to illumination. Furthermore, versatility is further improved by using a light-emitting diode as a light source having a second function installed in addition to illumination.

  Further, in the present embodiment, the illumination light source 1 and the second light source are arranged vertically on the wall of the storage chamber 6 so that the whole can be irradiated evenly, and the user can use the refrigerator. This makes it easy to overlook stored foods such as foods, and allows food to be taken in and out quickly, so that leakage of cold air due to opening of the door can be suppressed, and not only food deterioration can be suppressed, but also an energy saving effect can be obtained.

  In the present embodiment, the illumination light source 1 and the second light source 2 are arranged on the front side from the center of the storage chamber 6 in the front-rear direction, so that the user's eyes and the vicinity of the hand are illuminated brightly. Therefore, it is easy for the user to look over the stored items such as food in the storage room 6 of the refrigerator. In addition, when the second light source 2 has a bacteriostatic action, the door is opened and closed because it is placed closer to the door placed on the front side of the refrigerator by being placed on the front side than the center. Sometimes it is possible to prevent invasion of germs such as bacteria and mold from outside the refrigerator, which is effective.

  In the present embodiment, the refrigerator main body 5 has a plurality of storage compartments that are thermally insulated, and the storage compartment in which the illumination light source and the second light source are arranged is the most of the plurality of storage compartments. Since the refrigerator compartment 6 is located at the top, it is easy to use for the refrigerator user because the hand becomes brighter and the stored items stored in the refrigerator compartment 6 can be easily seen. improves. Furthermore, the refrigerator compartment 6 which is the uppermost storage room is a space where there is a high possibility that there are various kinds of stored items other than food such as foods and medicines compared to other storage rooms. It can also be assumed that liquid items such as milk in paper milk cartons or leftovers in unstable dishes are stored, and some of those foods may be scattered when the door is opened and closed. Therefore, when the second light source has a bacteriostatic action, the refrigerator user is most concerned about the dirt while continuously irradiating light. It is possible to enhance the bacteriostatic effect on the storage space.

  Furthermore, the refrigerator compartment 6 in which the illumination light source and the second light source are arranged is provided with a rotary door, and when the user opens the rotary door, Since the light from the second light source 2 directly enters the eyes of the user, it is possible for the refrigerator user to check the lighting state of the light source while performing the operation of opening the door.

  In the present embodiment, the bacteriostatic effect is improved as a main effect. However, the functional characteristics can be changed by variously changing the wavelength of the second light source 2.

  For example, if the second light source 2 is illuminated with a high-intensity light source that has a color temperature comparable to that of the illumination light source 1 and a color rendering property superior to that of the illumination light source 1, the fish looks natural and the gloss of the skin is It is expressed and looks fresh and lively. In addition, when illuminated with a high-brightness light source with low color temperature and a good color rendering, the meat looks vivid and the surface is glossy and looks fresh and delicious.

  In addition, when fruits are illuminated with a high-brightness light source that has a slightly lower color temperature than the surroundings and good color rendering, the fruits appear red, yellow, and orange vividly, and the surface is glossy and looks fresh and delicious. . Thereby, it is possible to make the 2nd light source 2 the effect color rendering which shows the color of preservation | save things, such as foodstuffs favorably.

  Thus, in the refrigerator compartment 6 for storing fish, meat and fruits, the second light source 2 is irradiated with a color temperature equal to or lower than that of the illumination light source 1 and with a luminance equal to or higher than that of the illumination light source 1. Thus, it is possible to produce an effect that the fish and meat look fresher and delicious to the user.

  Here, the color temperature is a numerical value expressed by replacing the color of light with a human-visible sensation, and is expressed in units of K (Kelvin). In general, the daytime sunlight is 5500K and the incandescent bulb is 3500 to 3000K. When the color temperature is high, it looks blue and when it is low, it looks red.

Luminance is the amount of light flux per unit area, and the unit is expressed in cd / m ² (candela per square meter). This brightness represents how much light can be emitted per unit area from a flat light source, and the larger the value, the brighter the irradiated part, so when using it in the refrigerator storage space, when the door is opened Improve brightness and make stored items easier to see.

  Next, since the wavelength of the second light source 2 includes a wavelength in the ultraviolet region of 280 nm to 400 nm, some mushrooms and fish contain a large amount of ergosterol, which is a precursor of vitamin D. The molecule is excited by being irradiated and converted into vitamin D, so that it can be preserved while increasing the vitamin D content. Further, fruits and vegetables such as strawberries, apples and strawberries containing anthocyanins can be stored while increasing polyphenols. Therefore, it becomes possible to preserve | save, improving the functionality of foodstuffs, and the functional value of a refrigerator improves. In addition, residual agricultural chemicals adhering to vegetables and fruits can be stored more safely because they have the effect of reducing phototoxicity and reducing toxicity when irradiated with light sources with wavelengths including ultraviolet rays. , The functional value of the refrigerator is improved.

  Furthermore, by configuring the second light source 2 in conjunction with a temperature sensor (not shown) in the refrigerator compartment 6, when the temperature rise in the refrigerator compartment 6 is significant, the temperature sensor detects the temperature rise or more, and the second The light source 2 is, for example, a warning light that is continuously lit in red or blinking. As a result, the refrigerator user can check the temperature rise when the door is opened, and take action to prevent the temperature rise, such as closing the door immediately, to suppress the deterioration of food stored in the refrigerator compartment 6. Is possible. Moreover, the 2nd light source 2 may be installed in the outer side of the refrigerator main body instead of in the refrigerator compartment 6. FIG. Thereby, the temperature state of the refrigerator compartment 6 can be confirmed without opening the door of the refrigerator compartment 6, and it is possible to deal with it quickly in case of abnormality.

  In addition, by setting the second light source 2 to a wavelength with a high healing effect, the light emitted from the second light source 2 when the refrigerator user opens the door reduces stress and makes a comfortable feeling. It is possible to have. In addition, it is possible to provide a product that is comfortable to use for the refrigerator user by making the light control not to make the strength of the second light source 2 constant, for example, to perform dimming control that gives the property of 1 / f fluctuation. is there.

  In addition, when you go to bed, when you are thirsty, you may open the refrigerator and drink beverages. However, when you open the refrigerator door, you may feel sleepy and not sleep after drinking. Can be a friend. Therefore, dimming so that it does not contain blue within the wavelength of the second light source, it has the effect of adjusting the sleep / wake rhythm of melatonin that is secreted in the dark night time zone by the mechanism of the human body It is also possible not to inactivate hormones, which are said to be a good source of sleep, and to prevent insomnia.

  By installing the second light source 2 outside the refrigerator, it can be used as indirect lighting for illuminating the kitchen, for example.

  Moreover, although this Embodiment was demonstrated as an example of application to the refrigerator compartment 6, the same effect can be anticipated also with respect to another store room. In addition to refrigerators, it can be used for a wide range of products such as showcases and storages.

  In addition, it is installed in the user's visible range and does not adversely affect the user's human body by the irradiated light, prevents deterioration of synthetic resins often used in refrigerators, and lipid oxidation for foods stored for a long time A refrigerator having a function of keeping the refrigerator clean by constantly preventing the growth of bacteria and cocoons without causing deterioration of quality. In addition, when the user opens the refrigerator door, the user can visually recognize the light, so that the user can always check the operating condition that the growth of bacteria and mold in the refrigerator is suppressed, and is visually added to the user. An object of the present invention is to provide a refrigerator having an added value effect that leads to appeal for products because the function can be recognized.

(Embodiment 2)
4 is a cross-sectional view of the refrigerator according to the second embodiment of the present invention, taken along line AA in FIG. In FIG. 4, the basic configuration is the same as that of the first embodiment, and detailed description thereof is omitted. On the mounting substrate 16, the illumination light sources 1 are collectively mounted on the upper side, and the second light sources 2 are collectively mounted on the lower side, that is, at a position closest to the specific low temperature chamber 13.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The lighting light source 1 and the second light source 2 are turned on and off as in the first embodiment by controlling the forward current of each light source by energizing or stopping. Since the 2nd light source 2 is arrange | positioned below at this time, the light which improves food preservation | save improvement when it lights is selectively concentrated and irradiated to the specific low temperature chamber 13. FIG.

  As described above, in the present embodiment, the specific low temperature chamber 13 is the most among the refrigerator compartments 6 by mounting the second light source 2 in the mounting substrate 16 at a location closest to the specific low temperature chamber 13. It becomes a site | part with a strong food preservation | save improvement effect, such as bacteriostasis, and the refrigerator user can utilize this specific low temperature room | chamber when selectively wanting the preservation effect.

(Embodiment 3)
FIG. 5 is a cross-sectional view of the refrigerator according to the third embodiment of the present invention taken along line AA in FIG. In FIG. 5, the mounting substrate 16 is disposed on the top surface of the specific low temperature chamber 13. The mounting substrate 16 has the second light source 2 mounted thereon, and is mainly bacteriostatic for fresh food stored in the specific low temperature chamber 13, fungi or mold floating in the specific low temperature chamber 13. Has an effect. The light source 1 for illumination is arrange | positioned in the place which is not limited in refrigerator storage space. The type of the light source of the second light source 2 is not particularly limited, but the light emitting diode has a small calorific value, can prevent a temperature rise in the storage space, can stabilize the preservability of food, Low running cost, excellent durability, and compact design are possible, so it is highly versatile and desirable. The specific low temperature chamber 13 can be switched in several stages according to the purpose and preference of the user. In the present embodiment, the temperature division of the specific low temperature chamber 13 can be switched to a refrigeration temperature of about 3 ° C., a partial freezing temperature of about −3 ° C., and a chilled temperature of about 0 ° C.

  The operation and action of the refrigerator configured as described above will be described below.

  First, when the inside of the refrigerator compartment 6 is illuminated with the illumination light source 1, a forward current is passed through the energization terminal 3 to cause the illumination light source 1 to emit light, and this light travels to the lamp cover 11, and the lamp cover 11 is diffused and the inside of the refrigerator compartment 6 is irradiated. When turning off the illumination, the forward current supply to the illumination light source 1 is stopped. In other words, the illumination light source 1 is for illuminating the inside of the refrigerator compartment 6 when the user opens the door of the refrigerator compartment 6 and looks at the food stored in the refrigerator compartment 6 and puts it in and out. It is desirable that the entire refrigerator compartment 6 is irradiated with light without being blocked. Moreover, after the user closes the door of the refrigerator compartment 6, it is quickly turned off.

  Next, when irradiating the inside of the specific low temperature chamber 13 with the light source 2 to improve the food preservation, a forward current is passed to the second light source 2 through the energization terminal 3 in the same manner as the illumination light source 1. The light other than the illumination light travels to the lamp cover 11 and is diffused by the lamp cover 11 to irradiate the inside of the specific low temperature chamber 13. Moreover, what is necessary is just to stop energization of the forward direction current to the 2nd light source 2, when stopping irradiation. That is, in the third embodiment, in addition to the illumination light source 1 for overall illumination, the second light source 2 that improves the bacteriostatic effect in the specific low temperature chamber 13 for food preservation is provided in the specific low temperature chamber 13. Arranged to improve the effect. Since the specific low temperature chamber 13 has a relatively small internal volume and is divided according to the case, the bacteriostatic effect is easily improved. In the third embodiment, only the second light source 2 is mounted on the mounting board 16, but when it is desired to irradiate the stored material more brightly, the illumination light source 1 is also aligned with the mounting board 16 when the door is opened. May be implemented. In addition, in the portable 3 of this embodiment, the mounting position of the light source is the top surface, but it is not particularly limited.

  The third embodiment is characterized in that only the specific low temperature chamber 13 is irradiated with the second light source 2, but the same applies to the ice-making water supply tank 14 and the egg case 15.

  As described above, in the third embodiment, the bacteriostatic action of the storage space having a relatively small internal volume can be improved by arranging the second light source 2 in the specific low temperature chamber 13. , Better storage performance.

(Embodiment 4)
FIG. 6 is a side sectional view of the refrigerator according to the fourth embodiment of the present invention.

  In FIG. 6, the refrigerator body 5 is partitioned by a partition for creating compartments of the storage room and insulated by a door for making these compartments closed, and from the top, the refrigerator room 6, the switching room 8, the vegetable room 9, the freezer The chamber 10 is a storage space of different temperatures. Among them, the vegetable room 9 has a humidity of about 80% R.D. H or more (during food storage), cooled to 4 to 6 ° C.

  Further, in order to cool the refrigerator main body 5, the refrigeration cycle is composed of a compressor 19, a condenser, a decompression device (not shown) such as an expansion valve and a capillary tube, an evaporator 20, piping connecting these components, refrigerant, and the like. Composed.

  Furthermore, there is an air passage 21 for transporting the low-temperature air generated by the evaporator 20 to each storage room space, or for collecting the air heat-exchanged in the storage room space to the evaporator 20. And is insulated by a partition 22.

  The mounting substrate 16 having the second light source 2 for suppressing the growth of fungi and molds present on the walls and the like in fruits and vegetables, root vegetables and the like stored in the vegetable room 9 has a center wavelength of about 450 nm. A blue LED that irradiates light including blue light is mounted in a concave portion on the indoor side of the top surface of the vegetable compartment 9 so that the lamp cover 11 covers the entire light emitting portion of the second light source 2. The lamp cover 11 is preferably formed of a transparent material such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, polypropylene, etc., using one material or a composite material as a base material and having diffusibility. As for the arrangement of the mounting substrate 16, it may be arranged at any position in the room, such as the top surface or the partition 22, as long as it can irradiate portions such as stored items, wall surfaces, and the top surface where bacteria and molds easily adhere.

  In this embodiment, a separate illumination light source is not particularly provided (providing a separate light source for illumination purposes is not hindered), and an LED including blue light is used as the second light source. Furthermore, the light irradiation intensity is not limited, and in order to improve the functional effect, if strong irradiation intensity is required, for example, increase the number of LEDs or select one with high luminance. May be. In the fourth embodiment, as the light source, the LED has a small calorific value, can prevent a temperature rise in the storage space, can stabilize the preservability of food, and the running cost is low, In addition, since it is excellent in durability and a compact design is possible, it is highly versatile and desirable as a refrigerator specification.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the second light source 2 irradiates the vegetable room 9 with light having an effect of suppressing the growth of fungi and fungi, the forward direction to the second light source 2 through the energizing terminal 3 is the same as the illumination light source 1. Current is allowed to flow to emit light, and light other than that for illumination travels to the lamp cover 11 and is diffused by the lamp cover 11 to irradiate the inside of the refrigerator compartment 6. Moreover, what is necessary is just to stop energization of the forward direction current to the 2nd light source 2, when stopping irradiation. However, the vegetable room 9 is a drawer type, and the daylight from the outside of the refrigerator, that is, the indoor space can be obtained from the opening, and therefore the first light source for illumination may not be installed. In that case, only the second light source 2 is mounted on the mounting substrate 16. When a wavelength including blue having a central wavelength of about 450 nm is used for the second light source 2, the coenzyme riboflavin involved in promoting the growth of the fungus that is present in the fungus cell becomes a photoreceptor, By absorbing mainly wavelengths of 350 nm to 490 nm, it is considered that the bacteria are difficult to grow and die, and as a result, it is possible to suppress the growth of mold and fungi.

  The second light source 2 is preferably irradiated when the door is open in order to prevent the invasion of airborne bacteria from the outside of the refrigerator, that is, from the indoor space, into the warehouse, but it may not be irradiated. . However, when the door of the vegetable compartment 9 is closed, irradiation is continued in order to suppress the growth of fungi and fungi floating in the vegetable compartment 9 and fungi and fungi adhering to the wall surface. It is desirable.

  In addition, the wavelength of the second light source 2 is not only a blue having a central wavelength of about 450 nm, but also includes an ultraviolet region that has relatively little adverse effect on the human body and materials in the range of 280 nm to 400 nm, or When used in combination with blue, the growth of bacteria attached to the food and the wall surface is suppressed, and the freshness performance is further improved. Further, in the case of a wavelength in the range of 280 nm to 400 nm, since there is relatively little adverse effect on the human body, it is mounted together with a blue light source having a central wavelength around 450 nm, and the entire refrigerator compartment 6 as in the fourth embodiment. It is possible to make the specification to irradiate the area, and it is possible to irradiate various germs such as bacteria and fungi directly compared with the case where it is installed in the air passage 21, so the freshness performance is high. Further improvement.

  Furthermore, the same effect can be expected for a green wavelength having a peak in the vicinity of 550 nm, which is approximately 500 nm to 600 nm, and may be used.

  Moreover, since the light stimulus with respect to fungi further strengthens by making the 2nd light source blink and light by making it blink under a dark condition, an effect improves.

  In addition, when a visible region is selected as the wavelength of the second light source 2, further adverse effects such as human body and resin deterioration are eliminated, so that versatility is greatly improved.

  Further, by including the wavelength of the second light source 2 in the ultraviolet region of 280 nm to 400 nm, some mushrooms such as shiitake mushrooms contain a large amount of ergosterol, which is a precursor of vitamin D. The molecule is excited by being irradiated and converted into vitamin D, so that it can be preserved while increasing the vitamin D content. Further, fruits and vegetables such as strawberries, apples and strawberries containing anthocyanins can be stored while increasing polyphenols. Therefore, it becomes possible to preserve | save while raising the functionality of foodstuffs, and the functional value of a refrigerator improves. In addition, residual agricultural chemicals adhering to vegetables and fruits can be stored more safely because they have the effect of reducing phototoxicity by irradiating light sources with wavelengths including ultraviolet rays. , The functional value of the refrigerator is improved.

  That is, in the fourth embodiment, the vegetable room 9 has a wavelength including blue as the second light source 2 for suppressing the growth of fungi and fungi present in fruit vegetables, root vegetables and the like and the wall surface. Preservability is improved. Furthermore, by including not only wavelengths including blue but also wavelengths of 280 to 600 nm, an effect of increasing functional (nutrient) components and maintaining quality can be obtained.

  As described above, the refrigerator according to the present invention includes the illumination light source and the second light source, and the second light source adversely affects the user's human body, stored food, synthetic resin, and the like. Furthermore, since the bacteriostatic effect is obtained without giving quality deterioration such as lipid oxidation to foods stored for a long period of time, the freshness is improved. Furthermore, since the user can visually recognize the light when the refrigerator door is opened, the user can always check the operating state of preventing the growth of fungi and mold in the refrigerator, and visually added to the user. The function can be recognized.

  The present invention can also be applied to household or commercial equipment, and can be used for improving the storage stability of, for example, a showcase, a cooler box, and a commercial refrigerator. Moreover, it can be widely used not only for storage devices but also for sanitary devices such as air purifiers, air conditioners, washing machines, vacuum cleaners, toilets, toilet seats and the like. Furthermore, it can also be used for storage of clothes, food, etc. (clothing, shoes, food, etc.).

Front view of the refrigerator in Embodiment 1 of the present invention 1 is a cross-sectional view taken along line AA in FIG. 1 according to Embodiment 1 of the present invention. Sectional drawing of the mounting substrate part in Embodiment 1 of this invention Sectional view taken along the line AA of FIG. 1 in Embodiment 2 of the present invention. AA line sectional view of FIG. 1 in Embodiment 3 of the present invention. Side sectional view of the refrigerator according to Embodiment 4 of the present invention. Main section longitudinal cross-sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source for illumination 2 2nd light source 5 Refrigerator main body 6 Refrigerated room (storage room)

Claims (13)

  A refrigerator provided with an illumination light source that illuminates a storage room that is insulated in the refrigerator body, and a second light source that has a function other than illumination and irradiates light with a wavelength of 280 nm to 600 nm.   When the door of the storage room where the illumination light source and the second light source are arranged is opened, the illumination light source and the light from the second light source are arranged so that they are within the visible range of the refrigerator user. The refrigerator according to claim 1.   The refrigerator according to claim 1 or 2, wherein the second light source has a function of performing blinking irradiation.   The refrigerator according to any one of claims 1 to 3, wherein the illumination light source and the second light source are arranged in a concentrated manner without being dispersed.   The refrigerator according to any one of claims 1 to 4, wherein the illumination light source and the second light source are arranged vertically on a wall inside the storage space.   The refrigerator according to any one of claims 1 to 5, wherein the illumination light source and the second light source are disposed on the front side from the center in the front-rear direction of the storage chamber.   The refrigerator according to any one of claims 1 to 6, wherein the second light source irradiates a specified specific space, which is disposed on a lower side of a storage shelf installed in the storage room.   The refrigerator main body has a plurality of storage rooms partitioned by heat insulation, and the storage room in which the light source for illumination and the second light source are arranged is positioned at the top of the plurality of storage rooms. The refrigerator as described in any one of 7 to 7.   The storage room in which the illumination light source and the second light source are arranged is provided with a rotary door, and when the user opens the rotary door, the illumination light source, The refrigerator according to any one of claims 1 to 8, wherein the light from the light source directly enters the eyes of the user.   In the storage room in which the illumination light source and the second light source are arranged, when the door is opened, the second light source having the functions other than the illumination light source and the illumination is turned on, and the door is closed when the door is closed. The refrigerator according to any one of claims 1 to 9, wherein the illumination light source is turned off and the second light source having a function other than the illumination for the previous period is turned on.   The refrigerator according to any one of claims 1 to 10, wherein the second light source has a bacteriostatic function with respect to food stored in the storage room and a space in the storage room.   The refrigerator according to claim 11, wherein light having a wavelength including blue of 400 nm or more and 500 nm or less is used as the second light source.   The refrigerator according to any one of claims 1 to 12, wherein the second light source is disposed within a visible range of the refrigerator user and notifies a warning when the door is opened.

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