CN203015209U - Respiration lamp with gradually changed illumination brightness - Google Patents
Respiration lamp with gradually changed illumination brightness Download PDFInfo
- Publication number
- CN203015209U CN203015209U CN2012206894339U CN201220689433U CN203015209U CN 203015209 U CN203015209 U CN 203015209U CN 2012206894339 U CN2012206894339 U CN 2012206894339U CN 201220689433 U CN201220689433 U CN 201220689433U CN 203015209 U CN203015209 U CN 203015209U
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- 238000005286 illumination Methods 0.000 title claims abstract description 20
- 230000029058 respiratory gaseous exchange Effects 0.000 title abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a respiration lamp with the gradually changed illumination brightness. The respiration lamp comprises a door switch detection circuit, a micro-controller capable of outputting PWM signals, an LED illumination circuit, and a power supply circuit. The door switch detection circuit is connected with the micro-controller and transmits detected switch signals to the micro-controller. An LED lamp is connected with a PWM signal output terminal of the micro-controller through the power supply circuit. The respiration lamp with the gradually changed illumination brightness is advantaged in that the illumination lamp of a refrigerator can be enabled to gradually lightened or darkened, thereby realizing the respiration effect of the LED lamp to increase the quality of the refrigerator.
Description
Technical field
The utility model relates to the breath light that a kind of brightness of illumination can gradually change.
Background technology
Along with the development of energy-saving and environmental protection technology, the LED illuminating lamp has been widely used in above the interior lighting of refrigerator.
In prior art, illuminating lamp is to control by the touch switch of refrigerator doors.Be provided with a touch switch in refrigerator doorframe, after refrigerator doors is closed, the contact separation in touch switch, the illuminating lamp in refrigerating chamber extinguishes; After refrigerator doors was opened, touch switch ejected under the effect of contained spring, and this moment, inner contact was closed, and illuminating lamp is lit.This light fixture, lamp are to be thrown open by closed condition, just reach maximum brightness once, and be larger to the stimulation of eye.
The utility model content
The utility model is the weak point that exists in above-mentioned prior art for avoiding, and the breath light that provides a kind of brightness of illumination to gradually change is so that can brighten gradually during refrigerator lighting lamp switch or dimmed gradually.
The utility model be the technical solution problem by the following technical solutions.
The breath light that brightness of illumination can gradually change, its design feature are to comprise microcontroller, LED lighting circuit and the power circuit of door switch testing circuit, exportable pwm signal; Described door switch testing circuit is connected with microcontroller and the switching signal that detects is passed to microcontroller; Described LED lamp is connected with the pwm signal output of microcontroller by power circuit.
The design feature of the breath light that brightness of illumination of the present utility model can gradually change also is:
Described microcontroller is provided with clock circuit and reset circuit; Described clock circuit comprises crystal oscillator X1 and resistance R 11; Described reset circuit comprises resistance R 10 and capacitor C 2.
Described door switch testing circuit comprises resistance R 8, resistance R 9, touch switch CN1 and capacitor C 1; One end of resistance R 8 is by capacitor C 1 ground connection, and the other end of resistance R 8 is by resistance R 9 connection+5V power supplys; The connecting terminals of touch switch CN1 is connected between resistance R 8 and resistance R 9, another terminal ground connection of touch switch CN1; Described microcontroller is connected between resistance R 8 and capacitor C 1.
Described power circuit comprises resistance R 3～R7, triode Q1, triode Q2 and switching diode D1, and the emitter of described triode Q2 is connected with+12V power supply, and resistance R 3 is connected with the pwm signal output of microcontroller; Described LED lighting circuit comprises resistance R 1, resistance R 2 and light-emitting diode L1～L5.
Compared with the prior art, the utility model beneficial effect is embodied in:
the breath light that brightness of illumination of the present utility model can gradually change, mainly by power circuit, microcontroller, door switch testing circuit and LED lighting circuit form, variation according to the on off operating mode of door switch, PWM output by microcontroller is controlled, after being switched on or switched off, door switch activates the driving of LED lamp assembly, the direct voltage that output changes by certain rule, when opening refrigerator doors the LED illuminating lamp by dark to bright, during closing refrigerator door the LED illuminating lamp by bright to secretly gradually changing, produce the breath light effect, reduce because opening, the visual impact of the unexpected variation of light to the people when turning off the light.The all right expanded application of this utility model is in other field of refrigerator system, as fresh light, Logo indicator light, display floater functional indicator light etc.
The breath light that brightness of illumination of the present utility model can gradually change is exported control by PWM and is driven LED illuminating lamp of refrigerator, realizes the gradually bright effect of breathing that gradually goes out of illuminating lamp, and light can by secretly gradually bright, remain the maximum brightness state at last when cold sotrage door is opened; When closing cold sotrage door, the LED illuminating lamp is by the brightest gradually dark until extinguish the visual impact of the unexpected variation of light to the people when reducing because of the open and close lamp.
Description of drawings
Fig. 1 is the pressure release state diagram of the brightness of illumination of the present utility model breath light that can gradually change.
Fig. 2 is the front view of the printed circuit board (PCB) that the LED lamp is set of breath light of the present utility model.
The vertical view of the printed circuit board (PCB) that the LED lamp is set of Fig. 3 breath light of the present utility model.
Fig. 4 is the variation schematic diagram that the power circuit of breath light of the present utility model is applied to the voltage on the LED lamp.
Fig. 5 is the oscillogram of wherein a kind of pwm signal of the microcontroller output of breath light of the present utility model.
Label in accompanying drawing 1～accompanying drawing 5: 1 LED, 2 printed substrates.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to Fig. 1～Fig. 5, the breath light that brightness of illumination can gradually change comprises microcontroller, LED lighting circuit and the power circuit of door switch testing circuit, exportable pwm signal; Described door switch testing circuit is connected with microcontroller and the switching signal that detects is passed to microcontroller; Described LED lamp is connected with the pwm signal output of microcontroller by power circuit.
Described microcontroller is provided with clock circuit and reset circuit; Described clock circuit comprises crystal oscillator X1 and resistance R 11; Described reset circuit comprises resistance R 10 and capacitor C 2.
Described door switch testing circuit comprises resistance R 8, resistance R 9, touch switch CN1 and capacitor C 1; One end of resistance R 8 is by capacitor C 1 ground connection, and the other end of resistance R 8 is by resistance R 9 connection+5V power supplys; The connecting terminals of touch switch CN1 is connected between resistance R 8 and resistance R 9, another terminal ground connection of touch switch CN1; Described microcontroller is connected between resistance R 8 and capacitor C 1.
Described power circuit comprises resistance R 3～R7, triode Q1, triode Q2 and switching diode D1, and the emitter of described triode Q2 is connected with+12V power supply, and resistance R 3 is connected with the pwm signal output of microcontroller; Described LED lighting circuit comprises resistance R 1, resistance R 2 and light-emitting diode L1～L5.
The LED lighting circuit comprises the LED lamp that a plurality of LED1 form, and LED1 arranges by ad hoc fashion and consists of LED lamp or LED area source.The door switch testing circuit comprises the door switch of the state that opens or closes for detection of refrigerator doors.Microcontroller is connected with the door switch testing circuit with power circuit by wire respectively, and power circuit is connected with the LED lighting circuit and provides power supply for LED; Microcontroller is according to the variation of the on off operating mode of door switch, at door switch by after being switched on or switched off, microcontroller sends pwm signal to power circuit, regulate the output voltage of power circuit, the direct voltage that power circuit output changes by certain rule, make the LED illuminating lamp by dark to bright or by bright to secretly gradually changing, the generation effect of breathing.Described a plurality of LED1 is shape arrangement in accordance with regulations on printed substrate 2, is provided with current-limiting resistance on printed substrate.Described LED lamp is arranged in the lamp box of cold compartment of refrigerator inner top, and a plurality of LED1 light and extinguish is Synchronization Control.
During concrete enforcement, the control law of LED lamp is: when cold sotrage door was opened, the LED lighting brightness step by step was strengthened to 100% from 0% at t1 in second; Keep highlighted state in second at t2, until cold sotrage door is closed, the LED lighting brightness gradually is decremented to 0% from 100% brightness at t3 in second, and illuminating lamp extinguishes.Touch switch CN1 is used for detecting refrigerator doors and opens or closes state.Touch switch CN1 connects when refrigerator doors is opened, and disconnects when refrigerator doors is closed.Microcontroller changes by the on off operating mode that the door switch testing circuit gathers door switch, and is transferred to power circuit according to predetermined rule generation pwm signal; The triode of power circuit is according to the pwm signal break-make that microcontroller sends, make the voltage that is applied on LED by from low to high, rule from high to low changes.The preferred model of microcontroller is the chip of S3F9498.
Disconnect when refrigerator doors is closed, microcontroller collects high level (being designated as 1); Connect when refrigerator doors is opened, microcontroller collects low level (being designated as 0).When the microcontroller collection door switch signal of main circuit board becomes 0 by 1 (carrying out an opening action), activate the driving to LED, and produce pwm signal according to predetermined rule.Triode Q1 is according to the pwm signal break-make that microcontroller sends, and the voltage that is applied on LED is changed by rule from low to high, and the brightness of LED illuminating lamp 0% is strengthened to 100% at t1 in second step by step; Keep highlighted state in second at t2; When the microcontroller collection door switch signal of main circuit board becomes 1 by 0 (carrying out a closing motion), activate the driving to LED, and produce pwm signal according to predetermined rule.Triode Q1 is according to the pwm signal break-make that microcontroller sends, and the voltage that is applied on LED is changed by rule from high to low, and the brightness of LED illuminating lamp 100% is decremented to 0% at t3 in second step by step, has realized the effect of breathing of LED lamp.In embodiment of the present utility model, t1=1.5s, t3=1.5s, t2 are the time that refrigerator doors is in open mode, as shown in Figure 4.
As shown in Figure 1, the brightness of illumination of the present utility model breath light that can gradually change is made of microcontroller, LED lighting circuit and the power circuit of door switch testing circuit, exportable pwm signal.The LED1 of LED lighting circuit is arranged on a bar printing wiring board 2, and a plurality of LED arrange by ad hoc fashion and are welded on the LED lamp group that forms on printed substrate 2, as shown in Figures 2 and 3.Fig. 4 is the voltage rule schematic diagram over time on a plurality of LED of being applied to of the utility model embodiment, and t1, t3, t2 are for executing the alive time.Fig. 5 is the waveform schematic diagram of the pwm signal of an embodiment of the present utility model, T_low is the low level time, T_high is the time of high level, by changing the width of high level time, the voltage that is applied to above the LED illuminating lamp is changed by Fig. 4 schematic diagram rule.
the breath light that brightness of illumination of the present utility model can gradually change, mainly by power circuit, microcontroller, door switch testing circuit and LED lighting circuit form, be characterized in the variation according to the on off operating mode of door switch, export control by software PWM, after being switched on or switched off, door switch activates the driving of LED lamp assembly, the direct voltage that output changes by certain rule, when opening refrigerator doors the LED illuminating lamp by dark to bright, during closing refrigerator door the LED illuminating lamp by bright to secretly gradually changing, produce effect of breathing, reduce because opening, the visual impact of the unexpected variation of light to the people when turning off the light.The all right expanded application of this utility model is in other field of refrigerator system, as fresh light, Logo indicator light, display floater functional indicator light etc., in the situation that do not increase cost, both promote product orientation, increased the quality of refrigerator, more can attract consumer's eye, also meet the development trend in refrigerator lighting lamp technology future.
Claims (4)
1. the brightness of illumination breath light that can gradually change, is characterized in that, comprises microcontroller, LED lighting circuit and the power circuit of door switch testing circuit, exportable pwm signal; Described door switch testing circuit is connected with microcontroller and the switching signal that detects is passed to microcontroller; Described LED lamp is connected with the pwm signal output of microcontroller by power circuit.
2. the brightness of illumination according to claim 1 breath light that can gradually change, is characterized in that, described microcontroller is provided with clock circuit and reset circuit; Described clock circuit comprises crystal oscillator X1 and resistance R 11; Described reset circuit comprises resistance R 10 and capacitor C 2.
3. the brightness of illumination according to claim 1 breath light that can gradually change, is characterized in that, described door switch testing circuit comprises resistance R 8, resistance R 9, touch switch CN1 and capacitor C 1; One end of resistance R 8 is by capacitor C 1 ground connection, and the other end of resistance R 8 is by resistance R 9 connection+5V power supplys; The connecting terminals of touch switch CN1 is connected between resistance R 8 and resistance R 9, another terminal ground connection of touch switch CN1; Described microcontroller is connected between resistance R 8 and capacitor C 1.
4. the brightness of illumination according to claim 1 breath light that can gradually change, it is characterized in that, described power circuit comprises resistance R 3～R7, triode Q1, triode Q2 and switching diode D1, the emitter of described triode Q2 is connected with+12V power supply, and resistance R 3 is connected with the pwm signal output of microcontroller; Described LED lighting circuit comprises resistance R 1, resistance R 2 and light-emitting diode L1～L5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206894339U CN203015209U (en) | 2012-12-13 | 2012-12-13 | Respiration lamp with gradually changed illumination brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206894339U CN203015209U (en) | 2012-12-13 | 2012-12-13 | Respiration lamp with gradually changed illumination brightness |
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| Publication Number | Publication Date |
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| CN203015209U true CN203015209U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206894339U Expired - Fee Related CN203015209U (en) | 2012-12-13 | 2012-12-13 | Respiration lamp with gradually changed illumination brightness |
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| CN (1) | CN203015209U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758183A (en) * | 2015-03-13 | 2015-07-08 | 东莞捷荣技术股份有限公司 | Intelligent feeding bottle cover and breathing lamp indicating circuit thereof |
| CN105101559A (en) * | 2015-08-21 | 2015-11-25 | 合肥华凌股份有限公司 | Control circuit for lighting lamps and refrigerator |
| CN105208754A (en) * | 2015-10-30 | 2015-12-30 | 合肥晶弘三菱电机家电技术开发有限公司 | Control method and drive circuit of LED illuminating lamp for refrigerators |
| CN105554935A (en) * | 2015-12-16 | 2016-05-04 | 冯秋林 | Fade-in or fade-out LED lamp programmable controller |
| CN106455233A (en) * | 2016-11-17 | 2017-02-22 | 广州炒米信息科技有限公司 | Breathing light control circuit |
-
2012
- 2012-12-13 CN CN2012206894339U patent/CN203015209U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758183A (en) * | 2015-03-13 | 2015-07-08 | 东莞捷荣技术股份有限公司 | Intelligent feeding bottle cover and breathing lamp indicating circuit thereof |
| CN105101559A (en) * | 2015-08-21 | 2015-11-25 | 合肥华凌股份有限公司 | Control circuit for lighting lamps and refrigerator |
| CN105208754A (en) * | 2015-10-30 | 2015-12-30 | 合肥晶弘三菱电机家电技术开发有限公司 | Control method and drive circuit of LED illuminating lamp for refrigerators |
| CN105554935A (en) * | 2015-12-16 | 2016-05-04 | 冯秋林 | Fade-in or fade-out LED lamp programmable controller |
| CN106455233A (en) * | 2016-11-17 | 2017-02-22 | 广州炒米信息科技有限公司 | Breathing light control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 No. 2163 Lianhua Road, Hefei economic and Technological Development Zone, Anhui Patentee after: CHANGHONG MEILING Co.,Ltd. Address before: 230601 No. 2163 Lianhua Road, Hefei economic and Technological Development Zone, Anhui Patentee before: HEFEI MEILING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20211213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |