WO2018016099A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
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- WO2018016099A1 WO2018016099A1 PCT/JP2017/000212 JP2017000212W WO2018016099A1 WO 2018016099 A1 WO2018016099 A1 WO 2018016099A1 JP 2017000212 W JP2017000212 W JP 2017000212W WO 2018016099 A1 WO2018016099 A1 WO 2018016099A1
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- light
- light emitting
- vegetable
- emitting device
- storage case
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D27/00—Lighting arrangements
Definitions
- the present invention relates to a refrigerator such as a household refrigerator, and more particularly, to a refrigerator provided with a light emitting device that irradiates light to a stored item in a vegetable room.
- a refrigerator has been developed in which LEDs (light emitting diodes) are arranged on the back of a vegetable room so that light is emitted to the vegetables stored in the vegetable room (for example, Patent Document 1).
- LEDs light emitting diodes
- Patent Document 1 a refrigerator has been developed in which LEDs (light emitting diodes) are arranged on the back of a vegetable room so that light is emitted to the vegetables stored in the vegetable room.
- Japanese Patent No. 4433958 (see paragraph 0027 and FIG. 2)
- the optical axis direction of the emitted light from the LED is horizontal. Therefore, if an LED is placed at the top of the back of the vegetable room, sufficient light may not be irradiated unless the vegetable is tall, such as spinach or Chinese cabbage (uncut) that is stored in the vegetable room. There is sex.
- LED when LED is arrange
- This invention was made in order to solve said subject, and it aims at providing the refrigerator which can irradiate light efficiently to the vegetable stored in the vegetable compartment.
- the refrigerator of the present invention includes a vegetable room, a vegetable storage case provided in the vegetable room, and a light emitting device provided in the vegetable room.
- the light emitting device includes a light emitting unit having an optical axis inclined downward with respect to a horizontal plane, and emits light from the light emitting unit toward the inside of the vegetable storage case.
- the refrigerator of the present invention light is emitted from the light emitting part having the inclined optical axis toward the inside of the vegetable storage case, so that it is possible to irradiate vegetables with low height enough.
- FIG. Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2 are a side sectional view and a front view of the refrigerator according to the first embodiment.
- FIG. 1 corresponds to a cross-sectional view in the direction of the arrow along line II shown in FIG.
- the refrigerator 1 is a household refrigerator, for example.
- the refrigerator 1 includes a plurality of storage rooms, that is, a refrigerating room 11, a switching room 12, an ice making room 13 (FIG. 2), a freezing room 14, and a vegetable room 15.
- the refrigerating room 11 is arranged at the top
- the switching room 12 and the ice making room 13 are arranged side by side
- the freezing room 14 is arranged below
- the vegetable room 15 is arranged at the bottom.
- it is not limited to such an arrangement.
- the refrigerator compartment 11 has a double door (or one-sided) rotating door 11a on the front.
- the inside of the refrigerator compartment 11 is divided into a plurality of spaces by a food shelf 11b.
- a chilled chamber is provided below the lowermost food shelf 11b, and a chilled case 11c that can be pulled forward is disposed.
- the switching chamber 12 is a storage chamber in which the temperature can be switched in two ways: a freezing temperature zone (for example, ⁇ 18 ° C.) and a soft freezing temperature zone (for example ⁇ 7 ° C.).
- the switching chamber 12 includes a drawer door 12a on the front surface and a food storage case 12b on the inside.
- the ice making chamber 13 is arranged side by side at the same height as the switching chamber 12, and includes a drawer door 13a on the front surface and an ice storage case (not shown) inside.
- the freezer compartment 14 has a drawer door 14a on the front and a food storage case 14b inside.
- the vegetable compartment 15 has a drawer door 15a on the front and a vegetable storage case 4 inside.
- each store room of the refrigerator 1 is not limited to these examples.
- the refrigerator 1 has a refrigeration cycle device for cooling each storage room.
- the refrigeration cycle apparatus includes a compressor 17 provided at a lower portion on the back side (rear) of the refrigerator 1, a condenser (not shown) that condenses refrigerant discharged from the compressor 17, and refrigerant that has flowed out of the condenser. And a throttle device (not shown).
- the refrigeration cycle apparatus also includes a cooler 18 that cools air by heat exchange with the refrigerant expanded in the expansion device, a blower (blower fan) 19 for sending the cooled air to each storage chamber, and an air passage.
- the air passage 22 is provided.
- a defroster 23 is disposed below the blower 19.
- the air cooled by the cooler 18 is sent to each storage room (the refrigeration room 11, the switching room 12, the ice making room 13, the freezing room 14, and the vegetable room 15) by the blower 19, and cools the inside of each storage room.
- the air heated by cooling the storage items in each storage chamber returns from the suction port provided in each storage chamber to the periphery of the cooler 18 via the return duct.
- the air cooled by the cooler 18 is blown again to each storage room.
- An operation panel 21 as an operation input unit is disposed on the front surface of the refrigerator 1.
- the operation panel 21 is a part where the user inputs settings such as the temperature of each storage room.
- the operation panel 21 is arrange
- the refrigerator 1 is provided with a control unit 20 (control board) that controls the entire refrigerator 1. Based on the output signal of the temperature detection sensor (for example, thermistor) provided in each storage room and the setting information of the operation panel 21, the control unit 20 is connected to the compressor 17, the blower 19, and a damper (not shown) connected to each storage room. Control).
- the control unit 20 also communicates with an external device. For example, a setting temperature change instruction or an in-chamber status confirmation instruction from a smartphone is received, and a response to these instructions is transmitted.
- the temperature inside each storage chamber is detected by a temperature detection sensor (for example, a thermistor) (not shown).
- the control unit 20 adjusts the opening of a damper (not shown), the capacity of the compressor 17, the amount of air blown from the blower 19, and the like so that the temperature detected by the temperature detection sensor becomes a preset temperature.
- the refrigerator 1 is covered with a housing 16 having a heat insulating member such as urethane foam or a vacuum heat insulating material. Moreover, the partition which has heat insulation members, such as foaming urethane or a vacuum heat insulating material, is provided also between each store room of the refrigerator 1. As shown in FIG.
- the refrigerator 1 includes a light emitting device 5 that irradiates light to the vegetables stored in the vegetable storage case 4 in the vegetable compartment 15. Below, the structure of the vegetable compartment 15 and the light-emitting device 5 is demonstrated.
- FIG. 3 is a diagram showing the vegetable room 15 and the surrounding structure.
- the vegetable compartment 15 is provided with a vegetable storage case 4 for storing vegetables and large (for example, 2 liters) PET bottles 201.
- the vegetable storage case 4 is configured to be movable in the front-rear direction (the direction indicated by the arrow B in FIG. 1) integrally with the drawer door 15a described above.
- a door opening / closing sensor 25 for detecting opening / closing of the drawer door 15a is provided in the upper front portion of the vegetable compartment 15.
- the door opening / closing sensor 25 outputs an ON signal when detecting the open state of the drawer door 15a, and outputs an OFF signal when detecting the closed state.
- the ON signal and OFF signal of the door opening / closing sensor 25 are collectively referred to as a door opening / closing signal.
- the control unit 20 measures the time when the drawer door 15a is opened (door opening time) and uses it as various control parameters, or generates a buzzer sound when the door opening time exceeds the set time. Call attention to.
- a similar door opening / closing sensor is also provided in a storage room other than the vegetable room 15.
- the vegetable storage case 4 has a structure that is divided into upper and lower two stages. More specifically, the vegetable storage case 4 has a lower case 41 and an upper case 42.
- the lower case 41 has a configuration in which a part of the back surface, that is, a portion located in front of the light emitting device 5 is opened, and the light of the light emitting device 5 is irradiated into the lower case 41 when the door is closed.
- both the lower case 41 and the upper case 42 may be partially or wholly formed of transparent plastic or the like so as to transmit light from the light emitting device 5.
- the lower case 41 (large vegetable case) stores relatively large vegetables, for example, leafy vegetables (leafy vegetables) 202 such as spinach, Japanese mustard spinach, cabbage and Chinese cabbage, and heavy root vegetables 203 such as potatoes and radishes. .
- leafy vegetables leafy vegetables
- Chinese cabbage Japanese mustard spinach
- heavy root vegetables 203 such as potatoes and radishes.
- relatively small vegetables for example, used vegetables, cucumbers, tomatoes and the like are stored.
- FIG. 4 is a schematic diagram showing an example of the shape of the vegetable storage case 4.
- the lower case 41 has a front surface portion 41a, a back surface portion 41b, a left side surface portion 41c, a right side surface portion 41d, and a bottom surface portion 41e, and the upper side is open.
- the upper case 42 has a front surface portion 42a, a back surface portion 42b, a left side surface portion 42c, a right side surface portion 42d, and a bottom surface portion 42e, and the upper side is open.
- the upper case 42 is held on the left and right side surfaces 41c and 41d of the lower case 41.
- the front portions (portions close to the front surface portion 41a) of the side surface portions 41c and 41d of the lower case 41 are formed to be higher than other regions, and restrict the front end position of the upper case 42. Therefore, a region that is not covered by the upper case 42 is formed in front of the lower case 41. In this region, for example, a large plastic bottle 201 (FIG. 3) is stored.
- the vegetable compartment 15 includes a bottom 31 that faces the bottom of the vegetable storage case 4, a ceiling 32 that faces the top of the vegetable storage case 4, and a back wall 33 that faces the back of the vegetable storage case 4.
- the side wall 34, 35 (FIG. 2) which opposes the both right and left side surfaces of the vegetable storage case 4 is provided.
- the light emitting device 5 is disposed on the back wall 33 of the vegetable compartment 15 so as to face the back of the vegetable storage case 4.
- the light emitting device 5 is disposed above the center in the vertical direction of the vegetable storage case 4.
- the light emitting device 5 is disposed at a position facing the back surface portion 41 b of the lower case 41 of the vegetable storage case 4. That is, the light emitting device 5 is disposed at a position lower than the upper case 42.
- the light-emitting device 5 is arrange
- the back wall 33 of the vegetable compartment 15 is composed of the above-described heat insulating member and has high strength. Therefore, by arranging the light emitting device 5 on the back wall 33, vibration applied to the LEDs (described later) of the light emitting device 5 can be suppressed and the reliability can be improved. Moreover, since driving parts such as a blower 19 and a damper are also arranged on the back side of the refrigerator 1, there is an advantage that wiring to the light emitting device 5 becomes easy.
- the light emitting device 5 may be arranged at the upper corner on the back side of the vegetable compartment 15 as indicated by reference numeral A2 in FIG. 3, or the light emitting device as indicated by reference numeral A3 in FIG. 5 may be arranged in the upper right corner or the upper left corner on the back side of the vegetable compartment 15.
- the light emitting device 5 is arranged at these positions, light can be irradiated to a relatively wide range in the vegetable storage case 4.
- the light emitting device 5 may be disposed on the side wall 34 or the side wall 35 of the vegetable compartment 15 as indicated by reference numeral A4. In this case, there is an advantage that the user can easily confirm the lighting state of the LED of the light emitting device 5.
- the light emitting device 5 may be provided on the ceiling portion 32 of the vegetable compartment 15.
- the ceiling portion 32 serves as a partition between the vegetable compartment 15 and the freezer compartment 14 and can be detached from the casing 16 of the refrigerator 1. Therefore, when the light emitting device 5 is attached to the ceiling portion 32, there is an advantage that attachment / detachment at the time of failure becomes easy.
- the light-emitting device 5 is disposed above the center of the vegetable storage case 4 in the vertical direction, and is disposed so that the outgoing optical axis Ax is inclined downward with respect to the horizontal plane H. By arranging in this way, the vegetables stored in the lower case 41 of the vegetable storage case 4 can be efficiently irradiated with light. Below, the specific structure of the light-emitting device 5 is demonstrated.
- FIG. 5 and FIG. 6 are a cross-sectional view and a front view showing a configuration example of the light-emitting device 5.
- the light emitting device 5 includes a plurality of semiconductor light emitting elements having different wavelengths. Specifically, the light emitting device 5 emits green light (light having a wavelength of 500 to 550 nm) and LEDs 51a and 51b as first light emitting sections that emit red light (light having a wavelength of 600 to 780 nm). LEDs 52a and 52b as second light emitting units and LEDs 53a and 53b as third light emitting units that emit blue light (light having a wavelength of 430 to 500 nm) are provided.
- the red LEDs 51 a and 51 b are arranged side by side to constitute an LED group 51.
- blue LEDs 53a and 53b are arranged side by side to constitute an LED group 53.
- green LEDs 52a and 52b are arranged side by side to constitute an LED group 52.
- two LEDs of each color are arranged, but one may be arranged, or three or more may be arranged.
- the light emitting device 5 includes a mounting substrate 55 on which LEDs 51 a, 51 b, 52 a, 52 b, 53 a, 53 b (hereinafter, LEDs 51 a to 53 b) are fixed by solder, and a cover member 54 that covers the emission side of the LEDs 51 a to 53 b. It has.
- the cover member 54 is configured by a member that transmits light emitted from the LEDs 51a to 53b.
- the cover member 54 includes an emission surface portion 54a disposed on the emission side of the LEDs 51a to 53b, a peripheral wall portion 54b surrounding the periphery of the LEDs 51a to 53b and the mounting substrate 55, and a base portion 54c formed at an end of the peripheral wall portion 54b.
- a base portion 54 c of the cover member 54 is fixed to the back wall 33.
- the mounting substrate 55 to which the LEDs 51a to 53b are fixed is fixed to the emission surface portion 54a of the cover member 54 with screws 56 so that the irradiation angle does not fluctuate due to the vibration of the refrigerator 1. Further, the back side of the cover member 54 is covered with a seal 57 in order to prevent a short circuit of the circuit of the mounting substrate 55.
- the light emitting device 5 is configured such that the outgoing optical axis Ax, which is the optical axis of the LEDs 51a to 53b, is directed downward with respect to the horizontal plane H by an angle ⁇ , and is located above the rear wall 33 of the vegetable compartment 15 (vertical direction of the vegetable storage case 4). It is incorporated in the upper part of the center).
- the angle ⁇ is in the range of 5 to 85 °, preferably 10 to 45 °.
- an inclined attachment surface 33a is formed on the back wall 33, and the light emitting device 5 is attached to the attachment surface 33a. ing.
- the configuration is not limited to that shown in FIG. 5, as long as the emission optical axis Ax of the LEDs 51 a to 53 b can be inclined with respect to the horizontal plane H.
- the LEDs 51a to 53b may be formed of bullet-shaped LEDs having long leads (legs) 58, and each lead 58 may be inclined with respect to the horizontal plane H by an angle ⁇ .
- the mounting board 55a to which the LEDs 51a and 51b are fixed, the mounting board 55b to which the LEDs 52a and 52b are fixed, and the mounting board 55c to which the LEDs 53a and 53b are fixed are configured by separate members. You may attach to the inclined surface of the support substrate 59, respectively.
- FIG. 9 is a diagram showing a circuit configuration of the light-emitting device 5.
- the LEDs 51a to 53b are connected in parallel to a voltage source of DC (direct current) 2V to 15V.
- microcomputers 101, 102, and 103 are connected to the LED groups 51, 52, and 53, respectively. That is, the LEDs 51a and 51b emit light when a current of 10 to 50 mA is passed by the microcomputer 101.
- the LEDs 52 a and 52 b emit light when a current of 10 to 50 mA is passed by the microcomputer 102.
- the LEDs 53 a and 53 b emit light when a current of 10 to 50 mA is passed by the microcomputer 103.
- the control unit 20 stores in advance a combination of a light amount and an irradiation time effective for activating the function of the vegetable for each LED color (that is, for each of red, blue, and green).
- the control unit 20 drives the microcomputers 101, 102, and 103 based on the stored light amount and irradiation time combination.
- each LED since the current flowing through each LED is as small as 10 to 50 mA, safety is high. Further, since the LEDs 51a to 53b are controlled for each group (each LED group 51, 52, 53), the number of ports of the microcomputer can be reduced, and the control unit 20 can be simplified.
- the photosynthetic reaction is represented by the following chemical formula (1). 6CO 2 + 12H 2 O + 688 kcal ⁇ C 6 H 12 O 6 + 6H 2 O + 6O 2 (1)
- CO 2 is carbon dioxide
- H 2 O is water
- O 2 is oxygen
- 688 kcal is light energy
- C 6 H 12 O 6 is glucose. This reaction is classified into a bright reaction that uses light energy and a dark reaction that does not use light energy.
- the light reaction is a reaction that changes light energy into chemical energy.
- carbon dioxide is not used, and pigments such as chlorophyll use light energy to decompose water into hydrogen and oxygen, and the enzyme protein acts as a chemical.
- Store energy On the other hand, in the dark reaction, glucose is synthesized using hydrogen generated in the bright reaction and carbon dioxide in the atmosphere. Vegetables with increased glucose have improved storability and produce vitamin C.
- red light, green light and blue light are used, and these have individual effects.
- Red light is a wavelength with a high absorption rate of chlorophyll in vegetables and is absorbed by the leaf surface and used for photosynthesis. Since green light has a low absorption rate of chlorophyll, it penetrates into the inside of the leaf, is repeatedly reflected and absorbed, and is used for photosynthesis.
- the blue light becomes a signal for transmitting to the vegetable that the light has been irradiated, and is used to open pores and take in carbon dioxide. Due to these effects, the photosynthetic reaction represented by the formula (1) is efficiently promoted.
- vegetables that are preferably irradiated with light are leafy vegetables such as spinach, komatsuna and cabbage.
- a vegetable that is preferably not irradiated with light is, for example, potato. Both leafy vegetables and potatoes are placed on the bottom surface portion 41e of the lower case 41. However, potatoes are lower in height than leafy vegetables.
- the angle ⁇ of the outgoing optical axis Ax of the light-emitting device 5 is irradiated to vegetables (leafy vegetables) that are more desirable to be irradiated with light.
- vegetables leafafy vegetables
- an area for storing a large plastic bottle 201 and the like is provided in front of the lower case 41.
- the angle ⁇ is set. Has no effect.
- the light emitting device 5 is desirably disposed above the center of the height from the bottom surface portion 41e of the lower case 41 to the bottom surface portion 42e of the upper case 42. If the light emitting device 5 is arranged in this way, for example, when a vertically long leafy vegetable such as spinach is placed against the back surface portion 41b of the lower case 41, or horizontally in the center on the bottom surface portion 41e of the lower case 41. Even when placed in this manner, the vertically long leafy vegetables can be irradiated with light.
- the large vegetable case may be provided on the small vegetable case upside down. If it does in this way, the small vegetables stored in the small vegetable case will not rot before it rolls into the large vegetable case and notices. Moreover, since the large vegetable case functions as a lid for the small vegetable case, drying of the used vegetables is suppressed. Thus, the quality of the vegetables stored in the vegetable compartment 15 can be improved as a whole.
- the light emitting device 5 repeats lighting and extinguishing of the LED at a constant rhythm.
- the turn-on time and turn-off time of the LED are each 5 hours or longer, preferably 5 to 15 hours. This is because if the light is turned on and off repeatedly in a very short cycle, it becomes dark before the biosynthetic function activation by light occurs, which is the same as not irradiating light.
- Irradiating a plant with blue light will signal that the plant has begun irradiating with light, so the plant (here, vegetables) opens the pores and takes in the carbon dioxide required for biosynthesis from the air. .
- red light and green light for activating the chlorophyll of vegetables and generating glucose by biosynthetic functions and accompanying synthesis of vitamin C and the like are irradiated.
- the amount of blue light is preferably 1/4 or less, and more preferably 1/5 to 1/10 of each amount of red light and green light.
- FIG. 10 is a flowchart showing an operation flow of the light-emitting device 5.
- the control unit 20 starts light irradiation control in accordance with the circadian rhythm of vegetables according to the operation of the operation panel 21 by the user (step S1).
- the present time is a time zone (daytime zone) in which light irradiation is to be performed (step S2).
- daytime zone Whether it is daytime or nighttime is determined using a 24-hour timer provided in the control unit 20. For example, 6 to 18 o'clock is set as a daytime zone, and other times are set in advance as a nighttime zone.
- the timing of the daytime zone and the nighttime zone may be changed according to the season. For example, the daytime zone may be the longest during the summer solstice, and the daytime zone may be the shortest during the winter solstice.
- the daytime zone and the nighttime zone are 24 hours in total, but this length may be appropriately changed.
- step S2 If it is determined in step S2 that the present day is a daytime zone, the control unit 20 discloses light irradiation in the daytime mode. That is, irradiation of red light by the LEDs 51a and 51b, irradiation of green light by the LEDs 52a and 52b, and irradiation of blue light by the LEDs 53a and 53b are started simultaneously (step S3). As described above, red light and green light are light suitable for activation of vegetable functions, and blue light is light that triggers the opening of vegetable pores. And the control part 20 starts the time measurement of the daytime mode by a timer, for example (step S4).
- the irradiation of the blue light by the LEDs 53a and 53b is performed for a time required for the opening of the vegetable pores, for example, 10 minutes or more, and after the time has elapsed, the LEDs 53a and 53b are turned off (step S5). Thereafter, the elapsed time from the start of the daytime mode is acquired (step S6), and when the elapsed time reaches the preset daytime mode upper limit time (step S7), the night mode is entered and the LEDs 51a, 51b, 52a, 52b are turned off. (Step S8). As a result, all the LEDs 51a to 53b are turned off, and the night mode is started.
- the control unit 20 starts time measurement in the night mode with a timer, for example, together with the start of the night mode (step S9). Thereafter, the elapsed time from the start of the night mode is acquired (step S10), and when the elapsed time reaches the preset night mode upper limit time (step S11), the process returns to the above step S3 to start the daytime light irradiation. .
- FIG. 11 is a timing chart showing the operation of the light emitting device 5. As shown in FIG. 11, with the start of the daytime period, irradiation of red light by the LEDs 51a and 51b, irradiation of green light by the LEDs 52a and 52b, and irradiation of blue light by the LEDs 53a and 53b are started simultaneously.
- the daytime zone and the nighttime zone are determined by the 24-hour timer, but a method that does not use the timer is also possible.
- the time when the opening / closing of the drawer door 15a is the least may be determined to be midnight, that is, 0:00.
- the drawer door 15a is opened and closed during the daytime (for example, the time zone from 6 o'clock to 18 o'clock) and external light enters the vegetable compartment 15, the vegetable Is already irradiated with light by the light-emitting device 5, so that there is less stress on the vegetables.
- the vegetables in the vegetable storage case 4 are not irradiated with light by the light emitting device 5, but the drawer door 15a is not frequently opened and closed at night. Therefore, there is little stress that vegetables receive.
- the light emitting device 5 includes LEDs 51a to 53b that emit red light, green light, and blue light.
- the light emitting device 5 is not limited to these wavelength bands, and is light that leads to activation of vegetable functions. I just need it.
- white light may be added to blue light by combining a yellow phosphor with the blue LEDs 53a and 53b.
- white light since white light can be irradiated to vegetables with blue light, visibility can be improved.
- the light emitting device 5 arranged in the vegetable compartment 15 includes the LEDs 51a to 53b having the outgoing optical axis Ax inclined downward with respect to the horizontal plane H, Light is emitted from the LEDs 51 a to 53 b toward the inside of the vegetable storage case 4. Therefore, it is possible to irradiate sufficient light even to vegetables with a low height.
- the light-emitting device 5 is arrange
- the leafy vegetables can be irradiated with light even when placed against the portion 41 b or when placed horizontally in the center on the bottom surface portion 41 e of the vegetable storage case 4.
- the vegetable storage case 4 has the lower case 41 and the upper case 42, and it is comprised so that the emitted light of the light-emitting device 5 may go to the lower case 41, the leaf which is mainly accommodated in the lower case 41 Vegetables can be irradiated with light efficiently.
- the angle formed by the outgoing optical axis Ax and the horizontal plane H is in the range of 5 to 85 degrees (more desirably 10 to 45 degrees), it is desirable to irradiate light on leafy vegetables. However, it is possible to prevent light from being applied to potatoes that are preferably not irradiated with light.
- the light emitting device 5 includes an LED group 51 that emits red light, an LED group 52 that emits green light, and an LED group 53 that emits blue light, and emits light from the LED groups 51 to 53 simultaneously. After that, by turning off the LED group 53 first, after the pores of the vegetables are opened by the irradiation of blue light, only light (red light and green light) necessary for photosynthesis is irradiated to reduce energy consumption. Can do.
- FIG. 12 is a diagram showing the vegetable room 15 and the surrounding configuration in the second embodiment.
- the light emitting device 5 can be swung around a swing shaft 62 in the horizontal direction (more specifically, in the left-right direction), and the inclination of the emission optical axis Ax of the light emitting device 5 relative to the horizontal plane H is changed. It is possible to let you.
- the light emitting device 5 is supported by a swing frame 61 that can swing around a swing shaft 62.
- the swing frame 61 is swung by a motor 6 as a drive device.
- the motor 6 is, for example, a stepping motor.
- the motor 6 and the swing frame 61 constitute a moving mechanism that moves the light emitting device 5 (that is, swings about the swing shaft 62).
- the configuration of the light emitting device 5 is as described in the first embodiment.
- the cover member 54 (FIG. 5) of the light emitting device 5 can be attached to the swing frame 61 so as to be swingable.
- a camera 7 as an imaging device is arranged on the back side of the vegetable compartment 15.
- the camera 7 is arranged so as to image the inside of the vegetable storage case 4 (here, the inside of the lower case 41).
- FIG. 13 is a block diagram showing a control system of the refrigerator in the second embodiment.
- An operation input from the operation panel 21, a door open / close signal from the door open / close sensor 25, and image data from the camera 7 are input to the control unit 20 of the refrigerator 1. Based on these inputs, the control unit 20 controls the compressor 17, the cooler 18, the blower 19, the motor 6, and the light emitting device 5 (LEDs 51a to 53b).
- control unit 20 detects the position of the leafy vegetable by processing the image data captured by the camera 7 and extracting, for example, a green image. Then, the motor 6 is driven according to the detected position of the leafy vegetable, and the inclination of the outgoing optical axis Ax of the light emitting device 5 is changed so that the leafy vegetable can be irradiated with light most efficiently.
- FIG. 14 is a schematic diagram illustrating an example of a change in the inclination of the outgoing optical axis Ax of the light-emitting device 5 according to the second embodiment.
- FIG. 13 (A) when the leafy vegetable 200 is at a high position in the vegetable storage case 4, by reducing the inclination angle ⁇ 1 of the light emitting device 5 with respect to the horizontal plane H of the output optical axis Ax, Light is irradiated to a relatively high position in the vegetable storage case 4.
- the position of the vegetable in the vegetable storage case 4 is detected based on the image captured by the camera 7, but the position of the vegetable in the vegetable storage case 4 may be detected by other methods.
- the user may input the position of the vegetable using the operation panel 21 (FIG. 1) or another input terminal.
- the internal space of the vegetable storage case 4 may be divided into a plurality of areas so that the user can select the areas.
- the interior space of the vegetable storage case 4 is divided into, for example, three in the front-rear direction (front, middle, rear), two in the left-right direction (right, left), and two in the up-down direction (upper, lower). May be.
- the light emitting devices 5 may be arranged at a plurality of locations, and the inclination of each light emitting device 5 may be changed according to the necessity of light irradiation (for example, the position of leafy vegetables).
- the inclination angle of the emission optical axis Ax of the light emitting device 5 with respect to the horizontal plane H is changed according to the position (height) of the vegetables in the vegetable storage case 4.
- light can be efficiently irradiated.
- the position of the vegetable in the vegetable storage case 4 is determined based on the image captured by the camera 7, the convenience for the user is further improved.
- the light-emitting device 5 includes the LED groups 51, 52, and 53 each including two LEDs, and the light emission is controlled for each group (each of the LED groups 51, 52, and 53).
- one LED may be provided for each wavelength band, and light emission may be controlled for each LED (each light emitting element).
- the light emitting elements are not limited to LEDs, and other light emitting elements may be used.
- the vegetable storage case 4 is divided into the lower case 41 and the upper case 42, but the vegetable storage case 4 does not necessarily have to be divided.
- the whole vegetable storage case 4 (the lower case 41 and the upper case 42) may be transparent, and only the portion of the light emitting device 5 that transmits light may be transparent.
- a portion of the light emitting device 5 through which light passes may be used as the opening.
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Abstract
Description
この発明の実施の形態1について、図1~11を参照して説明する。図1および図2は、実施の形態1の冷蔵庫の側断面図および正面図である。なお、図1は、図2に示す線分I-Iにおける矢視方向の断面図に相当する。冷蔵庫1は、例えば家庭用冷蔵庫である。図1に示すように、冷蔵庫1は、複数の貯蔵室、すなわち、冷蔵室11、切替室12、製氷室13(図2)、冷凍室14および野菜室15を備えている。
6CO2+12H2O+688kcal→C6H12O6+6H2O+6O2…(1)
次に、本発明の実施の形態2について説明する。図12は、実施の形態2における野菜室15とその周囲の構成を示す図である。この実施の形態2では、発光装置5を水平方向(より具体的には左右方向)の揺動軸62を中心として揺動可能とし、発光装置5の出射光軸Axの水平面Hに対する傾きを変化させることができるようにしている。
Claims (12)
- 野菜室と、
前記野菜室に設けられた野菜収納ケースと、
前記野菜室に設けられた発光装置と
を備え、
前記発光装置は、水平面に対して下方に傾斜した光軸を有する発光部を備え、当該発光部から前記野菜収納ケースの内部に向けて光を出射する
ことを特徴とする冷蔵庫。 - 前記発光装置は、前記野菜収納ケースの鉛直方向の中央よりも上方に配置されていることを特徴とする請求項1に記載の冷蔵庫。
- 前記発光装置は、前記野菜収納ケースの背面に対向するように配置されていることを特徴とする請求項1または2に記載の冷蔵庫。
- 前記野菜収納ケースは、上部ケースと下部ケースとを有し、
前記発光装置は、前記発光部から出射された光が前記下部ケースの内部に向かうように配置されていることを特徴とする請求項1から3までの何れか1項に記載の冷蔵庫。 - 前記光軸と水平面とのなす角が、5度~85度の範囲にあることを特徴とする請求項1から4までの何れか1項に記載の冷蔵庫。
- 前記光軸と水平面とのなす角が、10度~45度の範囲にあることを特徴とする請求項5に記載の冷蔵庫。
- 前記発光装置は、互いに波長の異なる光を出射する複数の発光部を有し、
前記複数の発光部のうち、選択した発光部から光を出射させることを特徴とする請求項1から6までの何れか1項に記載の冷蔵庫。 - 前記複数の発光部は、複数の発光素子または複数グループの発光素子であることを特徴とする請求項7に記載の冷蔵庫。
- 前記発光装置は、赤色光を出射する第1の発光部と、緑色光を出射する第2の発光部と、青色光を出射する第3の発光部とを有し、
前記第1の発光部と前記第2の発光部と前記第3の発光部とから同時に光を出射させたのち、前記第3の発光部を最初に消灯することを特徴とする請求項1から6までの何れか1項に記載の冷蔵庫。 - 昼間帯には前記発光装置が光を出射し、夜間帯には前記発光装置が消灯することを特徴とする請求項1から9までの何れか1項に記載の冷蔵庫。
- 前記発光装置を、前記光軸の水平面に対する傾きが変化するように移動させる移動機構と、
前記野菜収納ケース内の野菜の位置に応じて前記移動機構を制御する制御部と
をさらに備えたことを特徴とする請求項1から10までの何れか1項に記載の冷蔵庫。 - 前記野菜収納ケース内の画像を撮像する撮像装置をさらに備え、
前記制御部は、前記撮像装置によって撮像された画像に基づき、前記野菜収納ケース内の野菜の位置を検出することを特徴とする請求項11に記載の冷蔵庫。
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AU2017300291A AU2017300291B2 (en) | 2016-07-22 | 2017-01-06 | Refrigerator |
SG11201811094QA SG11201811094QA (en) | 2016-07-22 | 2017-01-06 | Refrigerator |
TW106104853A TWI622535B (zh) | 2016-07-22 | 2017-02-15 | refrigerator |
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JP6208298B1 (ja) | 2017-10-04 |
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AU2017300291B2 (en) | 2019-09-19 |
SG11201811094QA (en) | 2019-02-27 |
TWI622535B (zh) | 2018-05-01 |
JP2018013302A (ja) | 2018-01-25 |
CN109477681B (zh) | 2021-01-26 |
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