JP2006336963A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To utilize an optical sensor to save energy more and improve convenience in an electric refrigerator using the optical sensor for silent operation at night and energy-saving and the like. <P>SOLUTION: The optical sensors outside the refrigerator provided on a door or the door and the top surface detect luminosity around the refrigerator and adjust luminosity of a light source. Sensors in the refrigerator provided on a side surface in the refrigerator, a back surface, a shelf or inside of the door detect luminosity in the refrigerator and it is possible to adjust the luminosity of the light source also according to the quantity of stored objects in the refrigerator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with an optical sensor for detecting brightness around the refrigerator and the inside of the refrigerator, for example.

  In recent years, various refrigerators have been proposed that detect nighttime and perform energy saving and / or noise reduction operations. And there exists a thing which turns ON / OFF the light source in a warehouse with a light sensor about the brightness around a refrigerator (for example, refer patent document 1).

In addition, with the recent increase in the size of refrigerators, the storage volume has been increasing, and the location and amount of food changes from user to user, and the contents stored in the storage block the light and cause shadows. It was not easy to get through the whole room. In order to solve this, as shown in FIGS. 8 and 9, a door 52 is coupled to one side of the cabinet 50, and a guide portion 56 is formed on the inner rear wall 54 of the cabinet 50. A plurality of shelves 58 are coupled so as to be movable up and down, and a light assembly 59 is coupled to the front edge of each shelf 58 so as to illuminate the lower side of each shelf 58. The lamp and a plurality of sockets 60 for fixing the lamp are provided, and the interior of the refrigerator is illuminated by irradiating the lower side of each shelf 58.
JP 2001-349852 A

  However, in the conventional configuration, there are only two ways of turning on and off the light source in the warehouse, and depending on the detection of the optical sensor, there is a problem that the interior lighting is not turned on for the user even when illumination is necessary.

  Also, in the refrigerator, the arrangement of stored items changes from time to time, making it difficult to confirm the presence of stored items that are in the shadow of stored items, and forgetting to use foods due to overloading of stored items. Occurred. In addition, as described above, the configuration for illuminating the interior of the refrigerator has to be provided with a lamp for each shelf 58, and there is a problem that the back of the refrigerator compartment becomes dark when food is increased. In particular, in a refrigerator equipped with a freezer compartment, the inside of the freezer compartment is maintained at a temperature below zero. However, in such a low temperature state, the fluorescent substance in the fluorescent lamp has a weak light emitting power. Must be used. Therefore, there is a problem that the amount of power consumption increases due to the incandescent bulb used in the freezer compartment and the plurality of lamps used in the refrigerator compartment.

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to reduce the amount of power consumed by the refrigerator by saving the power of the interior lamp that illuminates the interior of the refrigerator when the refrigerator door is opened, and the amount of food. It is to provide an illuminating device that can illuminate the interior regardless of the case.

  In order to solve the above-described conventional problems, the present invention cools a storage chamber configured in a heat insulating box, and an opening of the storage chamber is closed by a door so as to be openable and closable. In the refrigerator having an interior light that illuminates the storage room and a refrigerator outside light sensor that detects the brightness around the refrigerator, the brightness around the refrigerator is detected by the outside light sensor when the door is opened. The brightness of the light source is adjusted in several steps according to the detection level.

  In addition, the present invention is characterized in that the brightness of the interior lamp is controlled by an energization current to the interior lamp, intermittently energized, and adjusted according to the ON / OFF time.

  Moreover, this invention is characterized by using LED for the interior lamp.

  In addition, the present invention cools the storage chamber configured in the heat insulation box, and includes an illuminating device in which the opening of the storage chamber is closed so as to be freely opened and closed by a door, and lighting is turned on when the door is opened. 1 or a plurality of independent light sources for irradiating the light source and one or a plurality of light sensors in the refrigerator for detecting the brightness in the refrigerator. It detects with the light sensor in a refrigerator, and adjusts the brightness of the said 1 or several independent light source according to each detection level.

  In addition, the present invention cools the storage chamber configured in the heat insulation box, and includes an illuminating device in which the opening of the storage chamber is closed so as to be freely opened and closed by a door, and lighting is turned on when the door is opened. Self-diagnosis device for detecting abnormalities such as temperature in a refrigerator in a refrigerator having an independent light source that irradiates light, a refrigerator external light sensor that detects the brightness around the refrigerator, and one or more light sensors in the refrigerator When the abnormality is detected by the self-diagnosis device, the independent light source is blinked to notify the abnormality.

  In addition, the present invention cools the storage chamber configured in the heat insulation box, and the opening of the storage chamber is closed by a door so that it can be opened and closed, and the storage chamber is closed, and a plurality of storage chambers partitioned by shelves or the like A refrigerator having a lower space, comprising one or a plurality of independent light sources for irradiating the plurality of spaces, and one or a plurality of light sensors in the refrigerator for detecting brightness in the refrigerator. A self-diagnosis device that detects an abnormality such as a temperature in the lower space of each storage room, and when the abnormality is detected by the self-diagnosis device, the independent light source corresponding to the abnormal space in the lower storage room blinks, It is characterized by notifying.

  In the present invention, the optical sensors provided inside and outside the refrigerator detect the brightness around the refrigerator and the amount of storage in the refrigerator, respectively, and adjust the brightness of the light source by controlling the energization current to the interior lamp in each, The interior lamp has an effect of reducing the power consumption of the refrigerator by adopting an LED capable of current control.

  According to the present invention, the self-diagnosis device detects an abnormality in a plurality of storage chamber lower spaces that are closed by a door so that the opening of the storage chamber is openable and closable, and the storage chamber is closed and separated by a shelf or the like. In this case, the independent light source is blinked to notify the abnormal part.

  The invention according to claim 1 includes a lighting device that cools the storage chamber configured in the heat insulating box, the opening of the storage chamber is closed so as to be freely opened and closed by a door, and lights when the door is opened. In the refrigerator having a light source that irradiates the storage chamber and a refrigerator outside light sensor that detects the brightness around the refrigerator, the brightness around the refrigerator is detected by the outside light sensor when the door is opened, and according to the detection level. The brightness of the light source is adjusted in several steps, and the brightness of the interior lamp can be adjusted in several steps according to the detection level.

  The invention according to claim 2 is the invention according to claim 1, wherein the brightness of the interior lamp is adjusted by controlling the energization current to the interior lamp. By changing it in a timely manner, it is possible to easily overlook the interior of the cabinet.

  The invention according to claim 3 is the invention according to claim 1, wherein the brightness of the interior lamp is performed by intermittently energizing and adjusting the ON / OFF time, and the power consumption of the refrigerator is reduced. Can be reduced.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein an LED is used for the interior lamp, and a fine current is obtained by using the LED for the interior lamp. It can be controlled and has no filament, so it is maintenance-free and can have a long service life.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, the storage chamber configured in the heat insulating box is cooled, and the opening of the storage chamber is closed by a door so that it can be opened and closed. A refrigerator having a lighting device or the like that is lit, and including one or more independent light sources that irradiate the inside of the storage room and one or more light sensors in the refrigerator that detect brightness in the refrigerator. The light intensity in the refrigerator is detected by the one or more light sensors in the refrigerator, and the brightness of the one or more independent light sources is adjusted according to the respective detection levels. When the amount of items stored in the warehouse is detected, and when it is determined that there are many items stored in the cabinet, a large amount of current can be passed from the control unit to the independent light source to brightly illuminate the interior of the cabinet. When judged Flow from the control unit reduces the current to the independent light source, it is possible to reduce the power consumption of the refrigerator.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the storage chamber configured in the heat insulating box is cooled, and the opening of the storage chamber is closed by a door. A lighting device that illuminates when the door is opened, one or a plurality of independent light sources that irradiate the storage chamber, a refrigerator outside light sensor that detects the brightness around the refrigerator, and one or a plurality In a refrigerator equipped with an individual light sensor in the refrigerator, a self-diagnosis device that detects an abnormality such as a temperature in the refrigerator, and flashes the independent light source when the abnormality is detected by the self-diagnosis device, and notifies the abnormality Yes, it is possible to notify the user of the abnormality by blinking the one or more independent light sources mounted on the one or more when it is determined to be abnormal, and to prevent the temperature inside the refrigerator from rising.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the storage chamber configured in the heat insulation box is cooled, and the opening of the storage chamber is closed freely by a door. One or a plurality of independent light sources for illuminating the plurality of storage room lower spaces, and a brightness in the refrigerator. In a refrigerator equipped with one or a plurality of light sensors in the refrigerator for detecting the height, a self-diagnosis device for detecting an abnormality such as a temperature in the lower space of the plurality of storage rooms, and an abnormality detected by the self-diagnosis device When flashing, the independent light source corresponding to the abnormal space blinks to notify the abnormal location, and the self-diagnostic device squeezes the storage chamber provided in the warehouse, and a plurality of compartments separated by shelves etc. In space When an abnormality occurs, the user is notified of the abnormality by blinking the independent light source corresponding to the abnormal space with one or more independent light sources that irradiate the lower space of the plurality of storage rooms. The temperature rise inside can be prevented. The independent light source blinking method is performed by intermittent energization because the independent light source uses an LED lamp. Duty control is used for this intermittent energization. Since the duty control can change the output at the ratio of the ON time, in this embodiment, the intermittent energization control is performed with the ON time and the OFF time being the same. As a result, in the interior lamp having the conventional filament, the life of the filament must be taken into consideration, but it is possible to make it blink easily by using the LED lamp.

  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 of the refrigerator according to Embodiment 1 of the present invention. In FIG. 1, 1 is a refrigerator. 2a is a rotary door that closes the front opening of the refrigerator compartment. Reference numeral 3 denotes a drawer door that closes the front opening of the vegetable compartment. Reference numeral 4 denotes a drawer door that closes the front opening of the ice making chamber. A drawer door 5 closes the front opening of the switching chamber. Reference numeral 6 denotes a drawer door that closes the front opening of the freezer compartment. Reference numeral 7 denotes a liquid crystal panel operation unit. Reference numeral 8 denotes a refrigerator external light sensor 8 attached to the top surface of the refrigerator 1. The brightness around the refrigerator 1 is detected by the refrigerator external light sensor 8 and the brightness corresponding to each can be changed by using the LED for the interior light by the energization current control.

  FIG. 2 is a front view of the refrigerator in FIG. 1 according to Embodiment 1 of the present invention except for the rotary door. 31a and 31b are interior lamps provided on the back of the interior, and the interior lamps are LED lamps. By using the LED lamp for the interior lamp, the interior lamp energization current control can be performed. 32a and 32b are covers which cover the interior lamp 31a and the interior lamp 31b. 33a, 33b, and 33c are shelves provided in the cabinet. Reference numerals 34a and 34b denote a plurality of storage room lower spaces separated by a threshold of 35a and 35b. 36 is a water supply tank for ice making. Reference numerals 37a, 37b, 37c, and 37d denote light sensors in the refrigerator, and the light sensor in the refrigerator has one or more. The light sensor 37a in the refrigerator is disposed on the back of the cabinet above the shelf 33a, the light sensor 37b in the refrigerator is disposed on the back of the warehouse in the upper part of the threshold 35a, and the light sensor 37c in the refrigerator is located in the storage space in the lower space 35a. It arrange | positions at the back and the light sensor 37d in a refrigerator is arrange | positioned at the storage chamber lower space 35b inner case back. These in-fridge light sensors 37a to 37d are light sensors that determine whether or not shadows are generated by blocking light by the stored items in the refrigerator. 38a, 38b, 38c, 38d, 38e, and 38f are independent light sources different from the interior lamp 31a and the interior lamp 31b, and the independent light source uses an LED, and has one or a plurality of independent light sources. The independent light source 38a and the independent light source 38b are disposed on the back of the cabinet above the shelf 33a, the independent light source 38c and the independent light source 38d are disposed on the back of the warehouse above the threshold 35a, and the independent light source 38e is disposed in the storage room lower space 35a. The independent light source 38f is arranged on the inner back of the storage chamber lower space 35b. By using LED lamps for these independent light sources 38a to 38f, independent light source current control can be performed. Moreover, these independent light sources 38a-38f are illumination devices for illuminating so that the illumination is sufficiently spread when the stored items in the warehouse block light and cause shadows.

  FIG. 3 is a diagram showing a liquid crystal panel operation unit of the refrigerator in the first embodiment of the present invention. Reference numeral 11 denotes a liquid crystal display unit. Reference numeral 12 denotes a menu button. If the menu button 12 is kept pressed, the liquid crystal display unit 11 is switched to “normal display → refrigeration room → freezer room → timer → switching room → automatic ice making → power saving → operation lock → sound off → normal display”. Reference numeral 13 denotes a selection button. For example, when the selection button 13 is kept pressed while “refrigeration room” is selected with 12 menu buttons, the liquid crystal display unit 11 is switched from “weak → weak | → medium → medium → strong”. 14 is a decision button. For example, this button is used when determining the temperature after changing the temperature of the refrigerator compartment with the selection button 13 while selecting “refrigerator compartment” with 12 menu buttons. 15 is a quick freeze button. When the quick freeze button is kept pressed, the liquid crystal display unit 11 is switched to “rapid freeze → fast ice → no display → rapid freeze”. Reference numeral 16 denotes a deodorizing button. When the deodorizing button 16 is pressed, the ring around the deodorizing button 16 is turned on, and the interior can be deodorized. Reference numeral 17 denotes a brightness level button. The brightness level button 17 can arbitrarily set the brightness level by the user when the brightness to the light source in the refrigerator is controlled by the refrigerator external light sensor 8. 2 → −1 → 0 → + 1 → + 2 ”. When the brightness control judged by the sensor is set to “0” and the user wants to illuminate the interior more brightly, the user can select “+1” or “+2”, and the user is darker than the standard. When it is desired to illuminate, “−1” or “−2” can be selected. It is also possible to suspend the function of the brightness sensor by pressing the brightness level button for 3 seconds.

  FIG. 4 is a functional block diagram of the refrigerator in the first embodiment of the present invention. The same parts as those in FIG. 3 are denoted by the same reference numerals. Reference numeral 18 denotes a control unit for controlling the refrigerator 1 and is composed of a microcomputer. Reference numeral 19 denotes a compressor control unit. Reference numeral 20 denotes a fan control unit. Reference numeral 21 denotes a refrigerator temperature sensor a. Reference numeral 22 denotes a refrigerator temperature sensor z arranged at a location different from 21. Reference numeral 23 denotes a freezer temperature sensor. Reference numeral 24 denotes an interior lamp control means for controlling turning on and off of the interior lamp and the light source. The control unit 18 detects the brightness around the refrigerator 1 and the inside of the refrigerator 1 with the former sensor 8 outside the refrigerator and the latter with the light sensors 37 a to 37 d inside the refrigerator, and determines the microcomputer incorporated in the control unit 18. The brightness of the interior lamp and the light source is controlled in several levels according to the standard. The control unit 18 controls the interior lamp 31a, the interior lamp 31b, the independent light source 38a, the independent light source 38b, the independent light source 38c, the independent light source 38d, and the independent light source so as to achieve the brightness selected by the brightness level button 17. 38e, the energization current of the independent light source 38f is controlled. The control unit 18 detects the temperatures of the refrigerator compartment and the freezer compartment by the refrigerator temperature sensor a21, the refrigerator temperature sensor z22, and the freezer temperature sensor 23, so that the temperature of the refrigerator compartment and the freezer compartment becomes a predetermined temperature. The compressor control unit 19 and the fan control unit 20 are controlled.

  FIG. 5 is an operation flowchart of the refrigerator outside light sensor of the refrigerator according to Embodiment 1 of the present invention.

  An example of lighting control of the interior lamp 31a and the interior lamp 31b will be described with reference to FIG.

  First, the control part 18 detects the brightness around the refrigerator 1 by the refrigerator external light sensor 8 in step S1. If the surroundings of the refrigerator 1 are dark, the process proceeds to step S2, and the energization current to the interior lamp 31a and the interior lamp 31b is supplied to the microcomputer mounted in the control unit 18 by an increment current that has been set in several stages in one stage. The energizing current flowing through the interior lamp 31a and the interior lamp 31b is increased. If the sensor outside the refrigerator 8 determines that the current is dark even if the current is increased, the steps S1 and S2 are looped. When the ambient brightness is detected as the lowest, the interior lamp 31a and the interior lamp 31b are detected. The upper limit current set by the microcomputer is supplied to When it is determined in step S1 that the surroundings of the refrigerator 1 are not dark, the process proceeds to step S3. At this stage, contrary to the above, if the surroundings of the refrigerator 1 are bright, the process proceeds to step S4, and the energization current to the interior lamp 31a and the interior lamp 31b is set in advance in the microcomputer mounted in the control unit 18 in a number of stages. The reduced current that has been used is supplied in one stage, and the energization current flowing through the interior lamp 31a and the interior lamp 31b is decreased. If it is determined that the refrigerator outside light sensor 8 is bright even when the current is decreased, the step S3 and the step S4 are looped, and when the ambient brightness is detected to be the highest, the interior lamp 31a, the interior lamp A lower limit current set by the microcomputer is supplied to 31b.

  By controlling the energizing current to the interior lamp 31a and the interior lamp 31b which are LEDs by the above control, the brightness level of the interior lamp 31a and the interior lamp 31b corresponding to the brightness around step S5. Can be realized.

  Further, when the brightness level is changed by the user, the increased current is changed in two steps in each case, and the interior lamp 31a and the interior lamp 31b are turned on brighter or darker. In this case, the upper limit current and the lower limit current are not changed from the above upper limit current and lower limit current.

  In addition, the energization of the interior lamp 31a and the interior lamp 31b can be performed simply by intermittently energizing and adjusting the ON / OFF time.

  FIG. 6 is a flowchart of operation of the light sensor in the refrigerator of the refrigerator according to Embodiment 1 of the present invention.

  An example of lighting control of the independent light source 38a and the independent light source 38b will be described with reference to FIG.

  First, the control part 18 detects the surrounding storage goods to which the light sensor in a refrigerator corresponds by the light sensor 37a outside a refrigerator which has one or more in step S11. The detection method is performed by determining whether or not a shadow is generated by blocking the light by the stored item in the refrigerator near the light sensor a in the refrigerator with the stored item in the refrigerator. If the light sensor 37a in the refrigerator does not detect a shadow in step S11, that is, if an item stored in the refrigerator is not detected, the process proceeds to step S12, and a preset reduction current is defined in the microcomputer mounted in the control unit 18. The current flowing through the independent light source 38a and the independent light source 38b is reduced.

  If a shadow is detected in step S11, that is, if a stored item is detected, the process proceeds to step S13. In step S13, the light sensor 37a in the refrigerator determines the shadow of the shadow from the stored item. If the shadow is large, it is determined that the stored item is large, and the process proceeds to step S14. An increased current that has been set in several stages in advance is supplied to the microcomputer mounted in the control unit 18 by one stage, and the energization current flowing through the independent light source is increased. When it is determined that the light sensor 37a in the refrigerator has a large shadow, that is, it is dark even when the current is increased, loops are made to step S13 and step S14, and when the ambient brightness is detected as the minimum, the independent light source 38a The upper limit current set by the microcomputer is supplied to the independent light source 38b.

  In step S13, the light sensor 37a in the refrigerator determines the shadow of the shadow based on the stored item. If the shadow is small, it is determined that the stored item is small, and the process proceeds to step S15. When the determination is made, the process proceeds to step S16, in which the energization current flowing to the independent light source 38a and the independent light source 38b is supplied to the microcomputer mounted in the control unit 18 by passing one step of the reduced current determined in advance by a predetermined number of steps. Reduce the current. If the light sensor 37a in the refrigerator determines that the current is bright even when the current is reduced, the process loops step S15 and step S16, and when the ambient brightness is detected to be the highest, to the independent light source 38a and the independent light source 38b. A lower limit current set by the microcomputer is supplied.

  By controlling the energizing current to the independent light source 38a and the independent light source 38b, which are LEDs, by the above control, the brightness levels of the independent light source 38a and the independent light source 38b corresponding to the ambient brightness in step S5 are realized. Can do.

  Further, when the brightness level is changed by the user, the increased current is changed in two steps in each case, and the independent light source 38a and the independent light source 38b are turned on brighter or darker. In this case, the upper limit current and the lower limit current are not changed from the above upper limit current and lower limit current.

  Similarly, the control of the energization current to the independent light source 38c and the independent light source 38d is controlled by the brightness level detected by the light sensor 37b in the refrigerator.

  Similarly, the control of the energization current to the independent light source 38e is controlled by the brightness level detected by the in-fridge light sensor 37c.

  Similarly, the control of the energization current to the independent light source 38f is controlled by the brightness level detected by the in-fridge light sensor 37d.

  In addition, the energization from the independent light source 38a to the independent light source 38f can be easily controlled by performing intermittent energization and adjusting the ON / OFF time.

  FIG. 7 is an operation flowchart of the self-diagnosis apparatus for the refrigerator according to Embodiment 1 of the present invention.

  An example of the control of the self-diagnosis device will be described with reference to FIG.

  First, in step S21, the controller 18 detects the temperature of the corresponding part in the refrigerator by the refrigerator temperature sensor a21. The refrigerator temperature sensor a <b> 21 is provided on the back side inside the storage room lower space 34 a.

  If it is detected in step S21 that the internal temperature is abnormal, the process proceeds to step S22, the backlight of the liquid crystal display unit 11 blinks, and an error display “E10” is displayed on the liquid crystal display unit 11, and a buzzer warning is issued. The sound beeps once. Here, the process proceeds to step S23, and when the door 2 is opened by the user, the process proceeds to step S24, and the independent light source 38e provided in the storage room lower space 34a, which is a temperature abnormal part, blinks. Notify that it is abnormal. At this time, the backlight of the liquid crystal display unit 11 remains blinking.

  If the door 2 is not opened or closed in step S23, the process proceeds to step S25, and one minute after the temperature abnormality is detected, a buzzer warning sound sounds twice. Here, the process proceeds to step S26, and when the door 2 is opened by the user, the process proceeds to step S24, and the independent light source 38e provided in the storage room lower space 34a, which is a temperature abnormal part, blinks. Notify that it is abnormal.

  If the door 2 is not opened / closed in step S26, the process proceeds to step S27, and after 2 minutes of temperature abnormality detection, a buzzer warning sound sounds three times “pipi, beep, beep”. Here, the process proceeds to step S28, and when the door 2 is opened by the user, the process proceeds to step S24, and the independent light source 38e provided in the storage room lower space 34a, which is a temperature abnormal part, blinks. Notify that it is abnormal.

  If the door 2 is not opened and closed in step S28, the process proceeds to step S29, and the buzzer warning sound continues to sound “pipi, pipi ...”. This continuous warning sound continues to sound for a certain time after the door is opened and closed. After a certain time elapses, the warning sound stops sounding, but the backlight blinking and the error display on the liquid crystal display unit 11 are continued.

  The in-refrigerator temperature sensor z22 is provided on the back of the interior of the storage room lower space 34b. The internal temperature abnormality detection means is the same means as the refrigerator temperature sensor a22, and blinks the independent light source 38f corresponding to the refrigerator temperature sensor z22.

  The flashing method of the independent light source 38e is intermittent energization. Duty control is used for this intermittent energization. Since the duty control can change the output at the ratio of the ON time, in this embodiment, the intermittent energization control is performed with the ON time and the OFF time being the same.

  As described above, the refrigerator lighting device according to the present invention has the effect of reducing power consumption by darkening the interior of the refrigerator when the refrigerator surroundings are bright using the refrigerator external light sensor. In addition, when the surroundings of the refrigerator are dark, the interior is brightened, thereby improving the user's convenience and preventing the user from forgetting to use food. In addition, by performing independent lighting in the refrigerator using the light sensor in the refrigerator, it is possible to improve the convenience of the user and prevent the user from forgetting to use food. In addition, since the abnormal part can be illuminated independently by having the self-diagnosis device, it is possible to easily determine which part is abnormal for the user.

Front view of the refrigerator in Embodiment 1 of the present invention The front view which removed the rotary door from the refrigerator of FIG. 1 in the embodiment Liquid crystal panel operation unit front view of the refrigerator in the same embodiment Control function block diagram of the refrigerator in the same embodiment Refrigerant outside light sensor operation flowchart of the refrigerator in the same embodiment Light sensor operation flowchart in refrigerator of the refrigerator in the same embodiment Self-diagnosis device operation flowchart of the refrigerator in the same embodiment Schematic perspective view showing a refrigerator to which a conventional refrigerator lighting device is applied The top view which shows the shelf of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 2a Revolving door 3, 4, 5, 6 Drawer door 7 Liquid crystal panel operation part 8 Refrigerator outside light sensor 17 Brightness sensor button 18 Control part 21 Refrigerator temperature sensor a
22 Refrigerator temperature sensor z
23 Freezer internal temperature sensor 31a, 31b Internal light 33a, 33b, 33c Shelf 34a, 34b Storage room lower space 35a, 35b Threshold 37a, 37b, 37c, 37d Refrigerator light sensor 38a, 38b, 38c, 38d, 38e, 38f Independent light source

Claims (7)

  While cooling the storage chamber configured in the heat insulation box, the opening of the storage chamber is closed so as to be openable and closable by a door, and has a lighting device that lights up when the door is opened, and a light source that irradiates the storage chamber; In a refrigerator equipped with a light sensor outside the refrigerator that detects the brightness around the refrigerator, the light outside the refrigerator detects the light around the refrigerator when the door is open, and adjusts the light source brightness in several steps according to the detection level. A refrigerator characterized by that.   The refrigerator according to claim 1, wherein the brightness of the interior lamp is adjusted by controlling an energization current to the interior lamp.   The refrigerator according to claim 1, wherein the brightness of the interior lamp is performed by intermittently energizing and adjusting the ON / OFF time.   The refrigerator according to any one of claims 1 to 3, wherein an LED is used for the interior light.   The storage chamber configured in the heat insulation box is cooled, and the opening of the storage chamber is closed by a door so that the storage chamber can be opened and closed. In a refrigerator having a plurality of independent light sources and one or more light sensors in the refrigerator for detecting the brightness in the refrigerator, the brightness in the refrigerator is detected by the one or more light sensors in the refrigerator. 2. The refrigerator according to claim 1, wherein brightness of the one or more independent light sources is adjusted according to each detection level.   The storage chamber configured in the heat insulation box is cooled, and the opening of the storage chamber is closed by a door so that the storage chamber can be opened and closed. Self-diagnosis device for detecting abnormalities such as temperature in a refrigerator in a refrigerator having a plurality of independent light sources, a refrigerator outside light sensor for detecting brightness around the refrigerator, and one or a plurality of light sensors in the refrigerator When the abnormality is detected by the self-diagnosis device, the independent light source is blinked to notify the abnormality, The refrigerator according to any one of claims 1 to 5.   While cooling the storage chamber configured in the heat insulation box, the opening of the storage chamber is closed openably and closable by a door, the storage chamber is closed, and has a plurality of storage chamber lower spaces separated by shelves, In the refrigerator comprising one or more independent light sources for illuminating the plurality of storage room lower spaces and one or more light sensors in the refrigerator for detecting the brightness in the refrigerator, the plurality of storages A self-diagnosis device that detects an abnormality such as a temperature in a lower room space, and when the abnormality is detected by the self-diagnosis device, the independent light source corresponding to the abnormal space blinks to notify the abnormality location The refrigerator according to any one of claims 1 to 6.

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