CN203464600U - Refrigerator illuminating device - Google Patents

Refrigerator illuminating device Download PDF

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Publication number
CN203464600U
CN203464600U CN201320591996.9U CN201320591996U CN203464600U CN 203464600 U CN203464600 U CN 203464600U CN 201320591996 U CN201320591996 U CN 201320591996U CN 203464600 U CN203464600 U CN 203464600U
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CN
China
Prior art keywords
light source
controller
drive circuit
main light
secondary light
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Expired - Lifetime
Application number
CN201320591996.9U
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Chinese (zh)
Inventor
朱建高
王书科
刘兆祥
卢玉波
周帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Shandong Refrigerator Co Ltd
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Hisense Shandong Refrigerator Co Ltd
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Priority to CN201320591996.9U priority Critical patent/CN203464600U/en
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Anticipated expiration legal-status Critical
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Abstract

The utility model relates to a refrigerator illuminating device. The refrigerator illuminating device comprises a main light source used for illuminating the inner portion of a refrigerator and further comprises an auxiliary light source, and the auxiliary light source is arranged at the position where the main light source cannot reach. The refrigerator illuminating device is simple in structure, a distance sensor and the auxiliary light source are arranged, and when food is placed at a place far away from the main light source, illumination is insufficient, and users take the food, through the sensing of the distance sensor, signals sent by the distance sensor are transmitted to a controller, the controller enables the auxiliary light source to emit light, and the food is convenient for the users to take.

Description

A kind of lighting device for refrigerator
Technical field
The utility model relates to a kind of lighting device, particularly a kind of lighting device for refrigerator.
Background technology
Existing refrigerator light source igniting mode is when refrigerator open, and the two ends of light source add rated voltage and maintain this voltage and remain unchanged, and show above light source and with certain brightness, remain unchanged immediately for light source.There are some problems in this working method, under dark environment, light source is lighted human eye is had to injury suddenly; Under different environment, human eye is also different to the adaptive capacity of brightness, if light with identical brightness, can cause that vision is uncomfortable; Under varying environment, user takes the time possibility difference that thing takies, and the report prompting start time point that opens the door is also answered difference; In the position away from light source, particularly food, stop while causing user's access food, have the main light source inadequate problem of illumination at a distance.
Utility model content
The utility model main purpose is to address the above problem and is not enough, and a kind of user of convenience is provided, and increases the refrigerator auxiliary lighting apparatus of illumination.
For achieving the above object, the technical solution of the utility model is:
A lighting device for refrigerator, comprises the main light source that is used to refrigerator intraoral illumination, also comprises secondary light source, and described secondary light source is arranged on the position that described main light source illumination does not relate to.
Further, also comprise controller and range sensor, described controller connects described secondary light source by secondary light source drive circuit, described controller connects the signal output part of described range sensor, and the detection signal of the described range sensor that described controller passes through is controlled described secondary light source and opened or close.
Further, range sensor is arranged on by described secondary light source.
Further, also comprise ambient light sensor, described controller is connected with the signal output part of described ambient light sensor, described controller is connected with described main light source by main light source drive circuit, the environmental light brightness that described controller detects according to described ambient light sensor is controlled the output voltage of described main light source drive circuit and described secondary light source drive circuit, thereby controls the brightness of described main light source and described secondary light source.
Further, the pwm signal output of controller connects respectively described main light source drive circuit and described secondary light source drive circuit, and described controller is recently controlled the output voltage of described main light source drive circuit and described secondary light source drive circuit by setting the duty of pwm signal high level.
Further, main light source is arranged on inner container of icebox top or top, and described secondary light source is arranged on inner container of icebox bottom or bottom.
Content to sum up, a kind of lighting device for refrigerator described in the utility model, tool has the following advantages:
1, range sensor and secondary light source are set, at food, are placed on the place away from main light source, illumination is inadequate, user is when taking food, and by the sensing of range sensor, the signal that range sensor sends is transferred to controller, controller makes secondary light source luminous, facilitates user's food of taking.
2,, by ambient light sensor is set, identification environmental light brightness around, adjusts the brightness of refrigerator inner light source automatically according to environmental light brightness automatically, not dazzling, offers the comfortable illumination effect of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model main light source drive circuit circuit diagram.
As depicted in figs. 1 and 2, controller 1, ambient light sensor 2, range sensor 3, door switch testing circuit 4, main light source drive circuit 5, secondary light source drive circuit 6, main light source 7, secondary light source 8.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:
As shown in Figure 1, a kind of lighting device for refrigerator, for increasing light source in refrigerator, gives user with better use impression.
Refrigerator auxiliary lighting apparatus mainly comprises controller 1, ambient light sensor 2, range sensor 3, main light source 7 and the secondary light source 8 of refrigerator.Controller 1 is for the control to each system of refrigerator, and controller 1 can send pwm signal square-wave pulse.
Ambient light sensor 2 is for detection of, identification refrigerator environmental light brightness around, be arranged on outside door of refrigerator or casing, the signal output part of ambient light sensor 2 connects controller 1, ambient light sensor 2 by the environmental light brightness communication detecting in controller 1.The pwm signal output of controller 1 is connected with main light source drive circuit 5, and main light source drive circuit 5 connects main light sources 7, and main light source drive circuit 5 provides electric power for main light source 7.
As shown in Figure 2, main light source drive circuit 5 comprises resistance R 1, resistance R 2, resistance R 3, triode Q1, triode Q2, diode D1, diode D2, triode Q1 grid is connected with the pwm signal output of controller 1 by resistance R 1, triode Q1 grounded emitter, colelctor electrode is connected power supply by resistance R 2 with resistance R 3, the common port of triode Q2 grid contact resistance R2 and resistance R 3, the emitter stage of triode Q2 connects power supply, colelctor electrode connects main light source 7, diode D1 negative electrode connects power supply, anodic bonding diode D2 negative electrode, diode D2 plus earth.
The pwm signal that triode Q1 sends by controller 1 carrys out break-make, realizes the variation of main light source control circuit 5 output voltages.Diode D1 and diode D2 play a protective role.
Controller 1 can be controlled the output voltage size of main light source drive circuit 5, thereby controls the brightness of main light source 7; The output voltage that can also control main light source drive circuit 5 gradually changes, and the brightness of main light source 7 is brightened gradually or dimmed gradually.Controller 1 is by regulating the dutycycle of pwm signal high level, and the high level duty that progressively increases or reduce pwm signal is recently realized above-mentioned two functions.
Controller 1 program is set, and controller 1, by the signal of environment of accepting optical sensor 2 transmission, judges and determines the dutycycle size of the required pwm signal high level sending.For example, when night, it is very low that ambient light sensor 2 detects ambient light brightness, transmit signals to controller 1, controller 1 judgement environmental light brightness is low, the high level dutycycle that definite output is less, controller 1 is exported the smaller pwm signal of high level duty to main light source drive circuit 5, as the dutycycle high level pwm signal that is 30%, the pwm signal break-make that triode Q1 sends according to controller 1, forces down the average electrical of main light source drive circuit 5, and the brightness of main light source 7 is low, when night, can not cause because main light source 7 is excessively bright user's visual discomfort sense.And for example, in the time of by day, it is brighter that ambient light sensor 2 detects ambient light brightness, transmit signals to controller 1, controller 1 judgement environmental light brightness is high, the high level dutycycle that definite output is larger, the larger pwm signal of controller 1 output high level dutycycle is to main light source drive circuit 5, as the dutycycle high level pwm signal that is 80%, the pwm signal break-make that triode Q1 sends according to controller 1, make the average voltage of main light source drive circuit 5 high, the brightness of main light source 7 is high, can not cause between surround lighting and main light source 7 light and shade contrast excessive.
The ambient light intensity that the size of the pwm signal high level dutycycle that controller 1 sends detects according to ambient light sensor 2 is set, and different surround lightings is corresponding from different high level dutycycles, can carry out refinement.
Controller 1, after definite pwm signal high level dutycycle size, can progressively promote high level dutycycle within a certain period of time, until arrive determined dutycycle size, main light source 7 is brightened gradually; Contrary, when main light source 7 need to be closed, controller 1 also can progressively diminish high level dutycycle, makes main light source 7 dimmed gradually.Light source brightens gradually or is dimmed gradually, has solved the procedure of adaptation problem of human eye to light, makes user can not feel dazzling, provides better user to experience.
Due to the spatial relation of inner container of icebox, and in the situation that food is placed too much or is more mixed and disorderly, user is when taking from main light source 7 food away from, and the brightness of main light source 7 is inadequate, causes user when taking food, to produce certain difficulty.Away from main light source 7 or main light source 7 illumination less than place, secondary light source 8 is set, in the present embodiment, adopt main light source 7 to be arranged on inner bag top or top, secondary light source 8 is arranged on the scheme of inner bag bottom or bottom.Secondary light source 8 can be identical with the opening ways of main light source 7,, along with chamber door is opened and open, also can separately establish checkout gear, and checkout gear for opening secondary light source 8 when needs when, transmits a signal to controller 1, controls secondary light source 8 unlatchings.Concrete structure is, on secondary light source 8 sides, a range sensor 3 is set, the signal output part of range sensor 3 connects controller 1, and controller 1 connects secondary light source drive circuit 6, secondary light source drive circuit 6 connects secondary light source 8, is secondary light source 8 power supplies.
When user takes near food secondary light source 8, people's hand can be near range sensor 3, it is close that range sensor 3 detects people's hand, transmit a signal to controller 1, controller 1 is controlled secondary light source drive circuit 6, secondary light source drive circuit 6 is opened secondary light source 8, for user provides light.By range sensor 3 and secondary light source 8, make user can take easily main light source 7 irradiate less than locational food, improved product quality, be user-friendly to.
Controller 1 can be controlled the output voltage size of secondary light source drive circuit 6, thereby controls the brightness of secondary light source 8; The output voltage that can also control secondary light source drive circuit 6 gradually changes, and the brightness of secondary light source 8 is brightened gradually or dimmed gradually.Control mode is identical with the control mode of above-mentioned main light source 7, secondary light source drive circuit 6 is also also identical in parts and connected mode with main light source drive circuit 5, by ambient light sensor 2, detect ambient light intensity, controller 1 is determined output pwm signal high level dutycycle size, realizes the brightness that automatically changes secondary light source 8; Controller 1 increases gradually or reduces high level dutycycle, controls that secondary light source 8 brightens gradually or dimmed.
Door switch testing circuit 4, for detection of the state of door of refrigerator opening and closing, is connected with controller 1.When chamber door is opened, door switch testing circuit 4 transmits a signal to controller 1, and controller 1 is controlled main light source 7 and lighted gradually by mode described above, and controls the final brightness of main light source 7; When chamber door is closed, door switch testing circuit 4 transmits a signal to controller 1, and it is dimmed gradually that controller 1 is controlled main light source 7.
When controller 1 is detected chamber door and opened over certain hour by door switch testing circuit 4, controller 1 controls the prompt system of closing the door in refrigerator and points out and cut out chamber door.First controller 1 controls main light source 7 flickers, if chamber door continues to open, and surpasses certain hour, and it is dimmed gradually by control mode recited above that controller 1 is controlled main light source 7, and open audible alarm, and prompting user closes chamber door.
Due to different ambient brightness, user's service speed is different, and the prompt time of the prompt system of closing the door is controlled or determined to the environmental light brightness that controller 1 detects according to ambient light sensor 2.For example, in night, it is low that controller 1 detects environmental light brightness by ambient light sensor 2, and controller 1 extends prompt time, makes user in the situation that environmental light brightness is lower, has the food of taking of more time.
The method that refrigerator light source is adjusted is as follows:
Step 1, ambient light sensor 2 detects refrigerator surrounding environment brightness, by signal output part, surrounding environment light intensity signal is fed back to controller 1.
Step 2, the environmental light brightness information that controller 1 feeds back according to ambient light sensor 2, controls the brightness of main light source 7.Different environmental light brightness is corresponding with the numerical values recited of pwm signal high level dutycycle, be set in the chip of controller 1, controller 1 is determined according to different environmental light brightness, in this environmental light brightness situation, needs the concrete numerical value of the pwm signal high level dutycycle of output.
The numerical values recited of pwm signal high level dutycycle is along with environmental light brightness strengthens and increases, and when environmental light brightness is stronger, pwm signal high level dutycycle is larger; When environmental light brightness is weak, pwm signal high level duty is smaller.Controller 1 is transferred to main light source drive circuit 5 by the pwm signal of definite high level dutycycle, the triode Q1 of main power source drive circuit 5 is according to pwm signal break-make, make controller 1 control the output voltage of main light source drive circuit 5, thereby control the brightness of main light source 7.
A kind of lighting device for refrigerator described in the utility model, by automatically regulate the brightness of refrigerator inner light source with environmental light brightness, and arranges secondary light source 8, has improved product quality, for user has brought better experience.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solutions of the utility model, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.

Claims (6)

1. a lighting device for refrigerator, comprises the main light source that is used to refrigerator intraoral illumination, it is characterized in that: also comprise secondary light source, described secondary light source is arranged on the position that described main light source illumination does not relate to.
2. a kind of lighting device for refrigerator according to claim 1, it is characterized in that: also comprise controller and range sensor, described controller connects described secondary light source by secondary light source drive circuit, described controller connects the signal output part of described range sensor, and the detection signal of the described range sensor that described controller passes through is controlled described secondary light source and opened or close.
3. a kind of lighting device for refrigerator according to claim 2, is characterized in that: described range sensor is arranged on by described secondary light source.
4. a kind of lighting device for refrigerator according to claim 1, it is characterized in that: also comprise ambient light sensor, described controller is connected with the signal output part of described ambient light sensor, described controller is connected with described main light source by main light source drive circuit, the environmental light brightness that described controller detects according to described ambient light sensor is controlled the output voltage of described main light source drive circuit and described secondary light source drive circuit, thereby controls the brightness of described main light source and described secondary light source.
5. a kind of lighting device for refrigerator according to claim 4, it is characterized in that: the pwm signal output of described controller connects respectively described main light source drive circuit and described secondary light source drive circuit, described controller is recently controlled the output voltage of described main light source drive circuit and described secondary light source drive circuit by setting the duty of pwm signal high level.
6. a kind of lighting device for refrigerator according to claim 1, is characterized in that: described main light source is arranged on inner container of icebox top or top, and described secondary light source is arranged on inner container of icebox bottom or bottom.
CN201320591996.9U 2013-09-24 2013-09-24 Refrigerator illuminating device Expired - Lifetime CN203464600U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135811A (en) * 2015-07-10 2015-12-09 合肥美的电冰箱有限公司 Refrigerator and lighting device for refrigerator
CN105222509A (en) * 2015-09-30 2016-01-06 沈阳海尔电冰箱有限公司 Room illumination control method and refrigerator between refrigerator
CN106382783A (en) * 2016-08-30 2017-02-08 青岛海尔股份有限公司 Refrigerating and freezing device and illumination control method for storage chambers of refrigerating and freezing device
CN108592505A (en) * 2018-04-27 2018-09-28 无锡和晶科技股份有限公司 A kind of refrigerator doors control system and method
CN108759287A (en) * 2018-04-27 2018-11-06 无锡和晶科技股份有限公司 A kind of Automatic adjustment method of refrigerator cold-storage room illumination lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135811A (en) * 2015-07-10 2015-12-09 合肥美的电冰箱有限公司 Refrigerator and lighting device for refrigerator
CN105222509A (en) * 2015-09-30 2016-01-06 沈阳海尔电冰箱有限公司 Room illumination control method and refrigerator between refrigerator
CN106382783A (en) * 2016-08-30 2017-02-08 青岛海尔股份有限公司 Refrigerating and freezing device and illumination control method for storage chambers of refrigerating and freezing device
CN106382783B (en) * 2016-08-30 2019-12-06 青岛海尔股份有限公司 Refrigerating and freezing device and illumination control method for storage room of refrigerating and freezing device
CN108592505A (en) * 2018-04-27 2018-09-28 无锡和晶科技股份有限公司 A kind of refrigerator doors control system and method
CN108759287A (en) * 2018-04-27 2018-11-06 无锡和晶科技股份有限公司 A kind of Automatic adjustment method of refrigerator cold-storage room illumination lamp
CN108759287B (en) * 2018-04-27 2020-12-25 无锡和晶智能科技有限公司 Automatic adjusting method for refrigerator refrigerating chamber illuminating lamp

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Granted publication date: 20140305