CN201821537U - Automatic dimming desk lamp - Google Patents
Automatic dimming desk lamp Download PDFInfo
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- CN201821537U CN201821537U CN2010202551824U CN201020255182U CN201821537U CN 201821537 U CN201821537 U CN 201821537U CN 2010202551824 U CN2010202551824 U CN 2010202551824U CN 201020255182 U CN201020255182 U CN 201020255182U CN 201821537 U CN201821537 U CN 201821537U
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- brightness
- light
- lamp
- circuit
- desk lamp
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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
Abstract
The utility model relates to an automatic dimming desk lamp which comprises a light source and a dimming control system for regulating the brightness of the light source, wherein the dimming control system comprises a detection circuit and a control circuit, the detection circuit is used for detecting whether the brightness of external ambient light and the wavelength of the light change or not, converting light signals to electrical signals and sending the electrical signals to the control circuit; and the control circuit is used for carrying out analog-digital conversion on the electrical signals sent from the detection circuit, carrying out analysis processing on the digital electrical signals obtained by conversion and discerning whether the light is the external ambient light or the light emitted by the lamp, if the external ambient light changes, a control signal is output for regulating the brightness of the lamp, thereby keeping the total brightness, namely the brightness of the external ambient light plus the brightness of the light emitted by the lamp within the range required by a user, otherwise, the brightness of the lamp is not regulated. The automatic dimming desk lamp provided by the utility model is simple in circuit structure and low in economic cost; and the brightness of the desk lamp can be automatically regulated according to the ambient brightness, thus the purposes of protecting eyes and saving energy are achieved.
Description
Technical field
The utility model relates to a kind of desk lamp with an automatic light meter.
Background technology
Reading room illumination should be about 300LX, and desktop work illumination should be about 750LX.Will produce harmful effect to human eye when brightness is too high or too low, be the one of the main reasons of the myopia incidence of disease, and it is few to understand the people of this reason veritably, except the only a few expert.According to relevant: myopia was about 1/3rd population severe visual problems of influence, and 15%～25% has myopia in the adult of the U.S., and great majority did not have near-sighted problem in the past at 7 years old.According to, theoretical calculate, bathomorphic people is suffered from the whole world may surpass 50%, and Chinese myopia incidence surpasses 70%, and the bathomorphic incidence and the order of severity increase along with the increase of education level.China suffers from the myopia number and occupies first of the world.In the myopia patient, the student is a main flow.Its students in middle and primary schools' the incidence of disease is 22.78%, and the high school student is 70.34%, and the university student is then up to 76.74%.At present, this numeral is still in rising trend.Though lamp dimmer is arranged at present on the market, but these desk lamps are manual adjustments brightness, so, the user does not know the brightness of lamp, and what are favourable or harmful to eyes, even know, go to measure because of wanting the brightness instrument, operation is too complicated, often do not go to regulate brightness yet, think, be disinclined to adjust brightness as long as eyes can see clearly Chu.And the desk lamp of this utility model can make the brightness of light remain on automatically in the suitable scope, in the activity such as do not need people to read a book and to write, often adjusts brightness, promptly protects eyes effectively, saves the energy again.
The utility model content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, a kind of desk lamp with an automatic light meter is provided.
Technical solution of the present utility model is: a kind of desk lamp with an automatic light meter, comprise light source and the dimming control system of regulating light-source brightness, and described dimming control system comprises
Testing circuit: whether the brightness and the light wavelength that detect external ambient light change, and light signal is converted to the signal of telecommunication gives control circuit;
Control circuit: the signal of telecommunication that testing circuit is sent here carries out analog-to-digital conversion, the digital electric signal that is converted to is carried out analyzing and processing, resolution is the light that external ambient light or lamp itself send, if the light of external environment condition changes, then export control signal and regulate the brightness of lamp, the brightness that makes the brightness of external ambient light add that lamp itself sends light is that total brightness remains in the scope of customer requirements, otherwise does not regulate the brightness of lamp.
Described control circuit to the processing procedure of the light variation of external environment condition is: when external environment condition brightness increased, control circuit output pulse width modulation (PWM) signal made power supply reduce the corresponding minimizing of the brightness of lamp to the magnitude of voltage or the current value of lamp power supply; When external environment condition brightness reduced, control circuit output pulse width modulation (PWM) signal made power supply increase the corresponding increase of the brightness of lamp to the magnitude of voltage or the current value of lamp power supply.
Further, described control circuit is realized by integrated circuit (IC) MCL01.
Described testing circuit is: constitute the positive and negative end that series circuit is connected described integrated circuit by the first kind photoelectric sensor and first resistance, the junction of described first kind photoelectric sensor and described first resistance is connected the voltage or the current detecting mouth input of described integrated circuit, and described first kind photoelectric sensor is photo resistance, photodiode, phototriode, photoelectric tube or photomultiplier etc.Wherein be preferably photo resistance, because the low price of photo resistance.
Described testing circuit can also for: constitute series loop A, described optocoupler and the 3rd resistance by photocell, second resistance and optocoupler and constitute series circuit B, series circuit B is connected the positive and negative end of described integrated circuit, and the optocoupler of series circuit B and the 3rd resistance joint are connected the voltage or the current detecting mouth input of described integrated circuit.
The control signal output ends of described integrated circuit is connected by the power supply of electronic switch with lamp and lamp.For example: described electronic switch is triode, field effect transistor, optocoupler or thyristor.
The utility model compared with prior art has following advantage: the utility model is connected the positive and negative end of integrated circuit by the series circuit with photo resistance and conventional, electric-resistance formation, IC detects the change in voltage of photo resistance and conventional, electric-resistance junction, regulate the ratio of IC output PWM duty ratio, the brightness of output control signal control lamp, make the brightness of external ambient light add that lamp itself sends the brightness of light, promptly total brightness remains in the scope of customer requirements.The utility model circuit structure is simple, and Financial cost is low, can regulate the brightness of desk lamp according to ambient brightness automatically, reaches protection eyes and purpose of energy saving.
Description of drawings
Fig. 1 is a principle assumption diagram of the present utility model;
Fig. 2 is that the utility model is with the circuit structure diagram of photo resistance as photoelectric sensor;
Fig. 3 is that the utility model is with the circuit structure diagram of photodiode as photoelectric sensor;
Fig. 4 is that the utility model is with the circuit structure diagram of phototriode as photoelectric sensor;
Fig. 5 is that the utility model is with the circuit structure diagram of photocell as photoelectric sensor.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Embodiment one:
As shown in Figure 2, as a kind of preferred implementation of the present utility model, a kind of desk lamp with an automatic light meter comprises light source and the dimming control system of regulating light-source brightness, and described dimming control system comprises:
Testing circuit: at two resistance of the two ends of 5V direct voltage series connection, one is the resistance R of fixed resistance value
F(be and embodiment two in resistance difference, be called first resistance here), another is photo resistance R
LWhether brightness and light wavelength that testing circuit detects external ambient light change, and light signal is converted to the signal of telecommunication gives control circuit; Brightness according to external ambient light is different with brightness and wavelength that wavelength and lamp itself send light, and it is also different that testing circuit is converted to the signal of telecommunication with light signal.
Control circuit: realize that by integrated circuit (IC) MCL01 the positive and negative end voltage of IC is the 5V direct current.The signal of telecommunication that IC sends testing circuit here carries out analog-to-digital conversion, the digital electric signal that is converted to is carried out analyzing and processing, resolution is the light that external ambient light or lamp itself send, if the light of external environment condition changes, then export control signal and regulate the brightness of lamp, the brightness that makes the brightness of external ambient light add that lamp itself sends light is that total brightness remains in the scope of customer requirements.
Described photo resistance R
LWith described conventional, electric-resistance R
FThe junction voltage (also can be electric current, just voltage commonly used) that is connected described integrated circuit detect a mouthful input.When external environment condition brightness increased, control circuit output pulse width modulation (PWM) signal made power supply reduce the corresponding minimizing of the brightness of lamp and power consumption to the magnitude of voltage or the current value of lamp power supply; When external environment condition brightness reduced, control circuit output pulse width modulation (PWM) signal made power supply increase the corresponding increase of the brightness of lamp and power consumption to the magnitude of voltage or the current value of lamp power supply.
Power supply among the figure is converted to the external communication electricity that the desk lamp light source can use.If the desk lamp light source is LED, then this power supply is a Switching Power Supply; If the desk lamp light source is an electricity-saving lamp, then this power supply is electric ballast or Inductive ballast etc.
Operation principle: when the brightness of external ambient light and light wavelength change, photo resistance R
LResistance can change thereupon, according to electrical principles, at photo resistance R
LWith conventional, electric-resistance R
FThe voltage V of junction
FLAlso can change V
FL≈ VR
L÷ (R
F+ R
L) (size of voltage V is 5 volts in the present embodiment); IC detects the change in voltage of photo resistance and conventional, electric-resistance junction, according to detected voltage V
FLVariation, with the A/D method continuous analog quantity is converted to digital quantity, the digital electric signal that is converted to is carried out analyzing and processing, resolution is the light that external ambient light or lamp itself send, if the light of external environment condition changes, then regulate the ratio of IC output PWM duty ratio, the brightness of output control signal control lamp, make the brightness of external ambient light add that lamp itself sends the brightness of light, promptly total brightness remains in the scope of customer requirements.
Need to prove that the photo resistance in Fig. 1 testing circuit can replace with: photoelectric sensors such as photodiode (as shown in Figure 3), phototriode (as shown in Figure 4), photoelectric tube or photomultiplier.These are referred to as first kind photoelectric sensor.Wherein photo resistance is a preferred version, and reason is the low price of photo resistance.
The control signal output ends of integrated circuit (IC) is connected by the power supply of electronic switch with lamp and lamp, and described electronic switch is triode, field effect transistor, optocoupler or thyristor for example.With the triode is example, and its base stage links to each other with the output control signal of described integrated circuit, and its other two utmost points link to each other with power supply with lamp.The connected mode of triode, field effect transistor, optocoupler or thyristor and lamp and power supply is conventionally known to one of skill in the art.
Embodiment two:
Different with embodiment one is, described testing circuit is: as shown in Figure 5, constitute series loop A, described optocoupler and the 3rd resistance (being a conventional, electric-resistance) by photocell, second resistance (being a conventional, electric-resistance) and optocoupler and constitute series circuit B, series circuit B is connected the positive and negative end of described integrated circuit, the voltage (also can be electric current, just voltage be commonly used) that the optocoupler of series circuit B and the 3rd resistance joint are connected described integrated circuit detects a mouthful input.
Certainly, the photocell in the testing circuit also can be substituted by the photoelectric sensor of similar functions, and this class photoelectric sensor is called the second class photoelectric sensor.
Principle assumption diagram of the present utility model is illustrated by Fig. 1 summary.
The utility model not only can be applied to the lighting condition that the desk lamp light source is LED, also can be applied to the lighting condition that the desk lamp light source is an other light sources, as incandescent lamp.If desktop work illumination should (Lx be a unit of illuminance at 750Lx, be light source that light intensity is lcd of distance, the illumination intensity of accepting at 1 meter) about, then the light that desk lamp is sent makes the brightness on the desktop remain on 750Lx, regardless of the light power of coming in from window.When this light can only make brightness on the desktop reach 100Lx, desk lamp just replenished 750Lx; When this light can only make brightness on the desktop reach 200Lx, desk lamp just replenished 550Lx; When this light can only make brightness on the desktop reach 300Lx, desk lamp just replenished 450Lx; When this light can only make brightness on the desktop reach 500Lx, desk lamp just replenished 150Lx; When this light can only make brightness on the desktop reach 750Lx, the desk lamp lamp just knocked out fully.And the electric energy of the dark more loss of desk lamp lamp is just few more.Certainly when this light can only make brightness on the desktop above 750Lx, the desk lamp lamp is in the time of can not making brightness on the desktop drop to 750Lx.
The foregoing description is used for the utility model of explaining; rather than the utility model limited; in the protection range of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection range of the present utility model.
Claims (6)
1. a desk lamp with an automatic light meter comprises light source and the dimming control system of regulating light-source brightness, and it is characterized in that: described dimming control system comprises
Testing circuit: whether the brightness and the light wavelength that detect external ambient light change, and light signal is converted to the signal of telecommunication gives control circuit;
Control circuit: the signal of telecommunication that testing circuit is sent here carries out analog-to-digital conversion, the digital electric signal that is converted to is carried out analyzing and processing, resolution is the light that external ambient light or lamp itself send, if the light of external environment condition changes, then export control signal and regulate the brightness of lamp, otherwise do not regulate the brightness of lamp.
2. desk lamp with an automatic light meter according to claim 1 is characterized in that, described control circuit is realized by integrated circuit MCL01.
3. desk lamp with an automatic light meter according to claim 2, it is characterized in that, described testing circuit is: constitute the positive and negative end that series circuit is connected described integrated circuit by the first kind photoelectric sensor and first resistance, the junction of described first kind photoelectric sensor and described first resistance is connected the voltage or the current detecting mouth input of described integrated circuit, and described first kind photoelectric sensor is photo resistance, photodiode, phototriode, photoelectric tube or photomultiplier.
4. desk lamp with an automatic light meter according to claim 2, it is characterized in that, described testing circuit is: constitute series loop A, described optocoupler and the 3rd resistance by photocell, second resistance and optocoupler and constitute series circuit B, series circuit B is connected the positive and negative end of described integrated circuit, and the optocoupler of series circuit B and the 3rd resistance joint are connected the voltage or the current detecting mouth input of described integrated circuit.
5. desk lamp with an automatic light meter according to claim 2 is characterized in that, the control signal output ends of described integrated circuit is connected by the power supply of electronic switch with lamp and lamp.
6. desk lamp with an automatic light meter according to claim 5 is characterized in that, described electronic switch is triode, field effect transistor, optocoupler or thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202551824U CN201821537U (en) | 2010-07-08 | 2010-07-08 | Automatic dimming desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202551824U CN201821537U (en) | 2010-07-08 | 2010-07-08 | Automatic dimming desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821537U true CN201821537U (en) | 2011-05-04 |
Family
ID=43919478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202551824U Expired - Fee Related CN201821537U (en) | 2010-07-08 | 2010-07-08 | Automatic dimming desk lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821537U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802305A (en) * | 2012-08-01 | 2012-11-28 | 珠海市创想节能科技有限公司 | Power-saving illuminator with automatic brightness adjustment function |
| CN102811525A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| WO2013152618A1 (en) * | 2012-04-12 | 2013-10-17 | Zhang Jiayan | Photoelectric sensor for automatically adjusting light of constant-light table lamp |
| CN109425478A (en) * | 2017-08-30 | 2019-03-05 | 南京钧乔行汽车灯具有限公司 | A kind of headlight for vehicles luminance detection device |
| CN109748182A (en) * | 2017-11-06 | 2019-05-14 | 上海三菱电梯有限公司 | The cover board test device of passenger conveying equipment |
-
2010
- 2010-07-08 CN CN2010202551824U patent/CN201821537U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811525A (en) * | 2011-05-31 | 2012-12-05 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| WO2013152618A1 (en) * | 2012-04-12 | 2013-10-17 | Zhang Jiayan | Photoelectric sensor for automatically adjusting light of constant-light table lamp |
| CN102802305A (en) * | 2012-08-01 | 2012-11-28 | 珠海市创想节能科技有限公司 | Power-saving illuminator with automatic brightness adjustment function |
| CN109425478A (en) * | 2017-08-30 | 2019-03-05 | 南京钧乔行汽车灯具有限公司 | A kind of headlight for vehicles luminance detection device |
| CN109748182A (en) * | 2017-11-06 | 2019-05-14 | 上海三菱电梯有限公司 | The cover board test device of passenger conveying equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU KOITO JINCHUANG TRANSPORTATION EQUIPMENT Free format text: FORMER OWNER: ZHANG JIAYAN Effective date: 20110715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510288 705, NO. 7, JINSHENG STREET, HAIZHU DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE TO: 213011 BUILDING 2, NO. 158, RENMIN EAST ROAD, HIGH-TECH. INDUSTRIAL DEVELOPMENT ZONE, WUJIN DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110715 Address after: 213011, No. 2, building 158, Renmin East Road, Wujin hi tech Industrial Development Zone, Changzhou, Jiangsu Patentee after: Changzhou J-KOITO Transportation Co., Ltd. of KTK Group Address before: 510288, 7 Jin Sheng street, Guangzhou, Guangdong, 705, Haizhuqu District Patentee before: Zhang Jiayan |
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Jiayan Document name: Notification that Application Deemed not to be Proposed |
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| ASS | Succession or assignment of patent right |
Owner name: ZHANG JIAYAN Free format text: FORMER OWNER: CHANGZHOU KOITO JINCHUANG TRANSPORTATION EQUIPMENT CO., LTD. Effective date: 20120528 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 213011 CHANGZHOU, JIANGSU PROVINCE TO: 510288 GUANGZHOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120528 Address after: 510288, 7 Jin Sheng street, Guangzhou, Guangdong, 705, Haizhuqu District Patentee after: Zhang Jiayan Address before: 213011, No. 2, building 158, Renmin East Road, Wujin hi tech Industrial Development Zone, Changzhou, Jiangsu Patentee before: Changzhou J-KOITO Transportation Co., Ltd. of KTK Group |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU NEWCOLOR OPTOELECTRONICS TECHNOLOGY CO., L Effective date: 20120820 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
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Inventor after: Fu Jianguo Inventor before: Zhang Jiayan |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: Free format text: CORRECT: ADDRESS; FROM: 510288 GUANGZHOU, GUANGDONG PROVINCE TO: 225000 YANGZHOU, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120820 Address after: 225000 No. 6 Cheung Road, Hanjiang Economic Development Zone, Jiangsu, Yangzhou Patentee after: JIANGSU NEWCOLOR OPTOELECTRONICS TECHNOLOGY CO., LTD. Address before: 510288, 7 Jin Sheng street, Guangzhou, Guangdong, 705, Haizhuqu District Patentee before: Zhang Jiayan |
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Owner name: ZHANG JIAYAN Free format text: FORMER OWNER: JIANGSU NEWCOLOR OPTOELECTRONICS TECHNOLOGY CO., LTD. Effective date: 20131226 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jiayan Inventor before: Fu Jianguo |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: FU JIANGUO TO: ZHANG JIAYAN Free format text: CORRECT: ADDRESS; FROM: 225000 YANGZHOU, JIANGSU PROVINCE TO: 510288 GUANGZHOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131226 Address after: 510288, 7 Jin Sheng street, Guangzhou, Guangdong, 705, Haizhuqu District Patentee after: Zhang Jiayan Address before: 225000 No. 6 Cheung Road, Hanjiang Economic Development Zone, Jiangsu, Yangzhou Patentee before: JIANGSU NEWCOLOR OPTOELECTRONICS TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20170708 |