CN109862658A - A kind of LED drive circuit of double mode switching - Google Patents
A kind of LED drive circuit of double mode switching Download PDFInfo
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- CN109862658A CN109862658A CN201811590670.8A CN201811590670A CN109862658A CN 109862658 A CN109862658 A CN 109862658A CN 201811590670 A CN201811590670 A CN 201811590670A CN 109862658 A CN109862658 A CN 109862658A
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- 230000006698 induction Effects 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims description 33
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 241001465382 Physalis alkekengi Species 0.000 abstract description 22
- 238000005286 illumination Methods 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005616 pyroelectricity 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The present invention provides a kind of LED drive circuits of double mode switching, including main control module, illuminant module, living body induction module, mode selection module, light source, power module；The main control module connects the illuminant module and living body induction module；The light source is connected between the mode selection module and power module；The mode selection module includes the first gear, the second gear；First gear and the second gear are separately connected the light source；A derailing switch is additionally provided between first gear and light source, the derailing switch is also connected with the main control module；Can realizing a lamps and lanterns tool using the technical program, there are two types of the functions of light illumination mode.
Description
Technical field
The present invention relates to the LED drive circuits that lighting area, in particular to a kind of double mode switch.
Background technique
While LED drive circuit in the prior art can not also accomplish the switching of the height gear light under inductive mode
Compatible lamps and lanterns flashlight switch mode.The infrared induction lamp that existing market uses, only induction shelves switch mould without high and low shift
Formula, or have high and low shift light handoff functionality without flashlight switch mini light night mode, and manufacturing cost is somewhat expensive.
Summary of the invention
The purpose of the present invention is to provide a kind of LED drive circuits of double mode switching, realize there are two types of a lamps and lanterns tools
The function of light illumination mode.
In order to solve the above-mentioned technical problems, the present invention provides a kind of LED drive circuit of double mode switching, master control moulds
Block, illuminant module, living body induction module, mode selection module, light source, power module；The main control module connection is described photosensitive
Module and living body induction module；The light source is connected between the mode selection module and power module；The model selection
Module includes the first gear, the second gear；First gear and the second gear are separately connected the light source；First gear
A derailing switch is additionally provided between light source, the derailing switch is also connected with the main control module；
When the mode selection module is allocated to the first gear, second gear is disconnected, and the main control module, which receives, to be opened
Dynamic signal, main control module transmission the first trigger signal to the derailing switch close after so that the derailing switch is opened a period of time
It closes；The illuminant module sends standby signal to the main control module when not sensing optical signal, the main control module receives
After the standby signal, the living body induction module sends opening signal to the main control module, institute when sensing living body signal
Stating main control module transmission the second trigger signal to the derailing switch opens the derailing switch, and the light source and the first gear connect
Logical, the light source lights；
When the mode selection module is allocated to the second gear, first gear is disconnected, and the light source lights.
In a preferred embodiment, it is also connected with the first current limiting component between first gear and light source, described
One current limiting component is connected with current limiting switch, and when the mode selection module is allocated to the first gear, the current limiting switch is opened, described
The effect of first current limiting component, the light-source brightness are lower.
In a preferred embodiment, first current limiting component includes the first current-limiting resistance and the second current-limiting resistance；Institute
Stating current limiting switch includes the first current limiting switch, the second current limiting switch；The both ends of first current-limiting resistance are separately connected described open
Device and first current limiting switch are closed, the both ends of first current limiting switch are separately connected first current-limiting resistance and power supply is negative
Pole；The both ends of second current-limiting resistance are separately connected the derailing switch and second current limiting switch, and second current limliting is opened
The both ends of pass are separately connected second current-limiting resistance and power cathode.
In a preferred embodiment: opening first current limiting switch and second current limiting switch, the light source are in
First brightness；First current limiting switch is opened, second current limiting switch is closed, the light source is in the second brightness；Open institute
The second current limiting switch is stated, first current limiting switch is closed, the light source is in third brightness；First brightness be higher than the second brightness and
Third brightness.
In a preferred embodiment, it is also connected with the second current limiting component between second gear and light source, described
Two current limiting components are connected with third current limiting switch；When the mode selection module is allocated to the second gear, the third current limiting switch
It opens, the second current limiting component effect, the light-source brightness is lower.
In a preferred embodiment, second current limiting component is specially third current-limiting resistance, the third current limliting electricity
The both ends of resistance are separately connected the light source and the third current limiting switch, and the both ends of the third current limiting switch are separately connected described
Third current-limiting resistance and power cathode；The third current limiting switch is opened, the light source is in the 4th brightness.
In a preferred embodiment, the main control module includes living body induction interface, photosensitive interface and triggering interface；It is living
Body induction module is specially infrared sensor, and the infrared sensor connects the living body and incudes interface.
In a preferred embodiment, the illuminant module is specially photodiode；The anode of the photodiode
Connect the photosensitive interface, the cathode ground connection of photodiode.
In a preferred embodiment, the derailing switch is specially metal-oxide-semiconductor；The grid of the metal-oxide-semiconductor connects the triggering
Interface, the source electrode of the metal-oxide-semiconductor connect first current-limiting resistance and the second current-limiting resistance, and the drain electrode of the metal-oxide-semiconductor connects institute
State light source.
In a preferred embodiment: when the mode selection module is allocated to the first gear, second gear is disconnected, institute
It states after main control module sends first trigger signal and makes described metal-oxide-semiconductor conducting a period of time and ends, the light source lights one section
It is knocked out after time；
The photodiode sends standby signal to the main control module, the master control mould when not sensing optical signal
After block receives the standby signal, the infrared sensor, which senses to send when the infrared signal that human body thermoelectric issues, opens letter
Number to the main control module, the main control module, which sends the second trigger signal to the metal-oxide-semiconductor, is connected metal-oxide-semiconductor, the light source
It lights；Or the photodiode senses optical signal, the photodiode does not send standby signal to the main control module,
The main control module does not send the second trigger signal to the metal-oxide-semiconductor, and the metal-oxide-semiconductor is not turned on, and the light source does not work；Or it is described
Standby signal is sent when photodiode does not sense optical signal to the main control module, the main control module receive it is described to
After machine signal, the infrared sensor does not sense that the infrared signal that human body thermoelectric issues, the infrared sensor are not sent out
Send opening signal to main control module, the main control module does not send the second trigger signal to the metal-oxide-semiconductor, and the metal-oxide-semiconductor is not led
Logical, the light source does not work；
The mode selection module further includes third gear, and the third gear includes the 4th switch；4th switch
One end connect the light source, the other end open circuit of the 4th switch, when the mode selection module is allocated to third gear, the light
Source does not work.
Compared to the prior art, technical solution of the present invention have it is following the utility model has the advantages that
The present invention provides a kind of LED drive circuits of double mode switching, realize that a driving circuit makes lamps and lanterns while having
The switching of height gear light and lamps and lanterns torch mode under standby inductive mode；Pass through the first current limiting switch of control and the second current limliting
The opening and closing of switch are to adjust high low-light level of the light source in the first gear, especially by the first current-limiting resistance of setting and the
The different resistance values of two current-limiting resistances control the different brightness of light source；If needing torch mode, then only need to exchange to the
Two gears after derailing switch is closed, the light source bright or go out then unrelated with main control module, it is only necessary to open or close third current limliting
The i.e. controllable light source of switch, realizes torch mode.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of the LED drive circuit of double mode switching in the preferred embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of LED drive circuit of double mode switching, incudes with reference to Fig. 1, including main control module U1, illuminant module, living body
Module, mode selection module, light source, power module；The main control module U1 connection illuminant module and living body induction module；
The light source is connected between the mode selection module and power module；The mode selection module includes the first gear, the
Two gears；First gear and the second gear are separately connected the light source；It is additionally provided between first gear and light source
One derailing switch, the derailing switch are also connected with the main control module U1.In the present embodiment, the light source is specially four in parallel
LED light source；It is connected with linear voltage regulator between the main control module U1 and power module, to realize stable power-supplying.
General principles are as follows: when the mode selection module is allocated to the first gear, second gear disconnects, at this time light source
Light on and off are controlled by main control module U1；The main control module U1 receives enabling signal, and the main control module U1 sends the first triggering
Signal to the derailing switch is closed after so that the derailing switch is opened a period of time；When the illuminant module does not sense optical signal
Standby signal is sent to the main control module U1, after the main control module U1 receives the standby signal, the living body incudes mould
Block sends opening signal to the main control module U1, the second trigger signal of the main control module U1 transmission when sensing living body signal
Open the derailing switch to the derailing switch, the light source is connected to the first gear, and the light source lights；The model selection
When module is allocated to the second gear, first gear is disconnected, and the light on and off of light source are not controlled by main control module U1 at this time, the light source
It lights.
Specifically, the first current limiting component, first current limiting component are also connected between first gear and light source
It is connected with current limiting switch, when the mode selection module is allocated to the first gear, the current limiting switch is opened, the first current limliting group
Part effect, the light-source brightness are lower.
More specifically, first current limiting component includes the first current-limiting resistance R9 and the second current-limiting resistance R10；The current limliting
Switch includes the first current limiting switch HIGH, the second current limiting switch LOW；The both ends of the first current-limiting resistance R9 are separately connected described
Derailing switch and the first current limiting switch HIGH, the both ends of the first current limiting switch HIGH are separately connected the first current limliting electricity
Hinder R9 and power cathode；The both ends of the second current-limiting resistance R10 are separately connected the derailing switch and second current limiting switch
The both ends of LOW, the second current limiting switch LOW are separately connected the second current-limiting resistance R10 and power cathode.Open described
One current limiting switch HIGH and the second current limiting switch LOW, the light source are in the first brightness；Open first current limiting switch
HIGH, closes the second current limiting switch LOW, and the light source is in the second brightness；The second current limiting switch LOW is opened, is closed
The first current limiting switch HIGH, the light source are in third brightness；First brightness is higher than the second brightness and third brightness.If described
The resistance value of first current-limiting resistance R9 is greater than the resistance value of the second current-limiting resistance R10, then second brightness is bright lower than third
Degree；If the resistance value of the second current-limiting resistance R10 is greater than the resistance value of the first current-limiting resistance R9, then the third brightness is low
In the second brightness；So far the switching of height gear light of the lamps and lanterns under infrared induction mode is realized.
Specifically, the second current limiting component, second current limiting component are also connected between second gear and light source
It is connected with third current limiting switch ON；When the mode selection module is allocated to the second gear, the third current limiting switch ON is opened, institute
The effect of the second current limiting component is stated, the light-source brightness is lower.Second current limiting component is specially third current-limiting resistance R11, institute
The both ends for stating third current-limiting resistance R11 are separately connected the light source and the third current limiting switch ON, the third current limiting switch
The both ends of ON are separately connected the third current-limiting resistance R11 and power cathode；Open the third current limiting switch ON, the light source
In the 4th brightness, lamps and lanterns are not controlled by main control module U1 at this time, are opened third current limiting switch ON light source and are just lighted, realize lamps and lanterns
Flashlight function.
Specifically, the main control module U1 includes living body induction interface, photosensitive interface and triggering interface；Living body incudes mould
Block is specially infrared sensor PIR, and in the present embodiment, the infrared sensor PIR is specially that infrared remote receiver pyroelectricity passes
Sensor；The infrared sensor PIR connection living body incudes interface.The illuminant module is specially photodiode Q2；Institute
The anode for stating photodiode Q2 connects the photosensitive interface, the cathode ground connection of photodiode Q2.The derailing switch is specially
Metal-oxide-semiconductor Q1；The grid of the metal-oxide-semiconductor Q1 connects the triggering interface, and the source electrode of the metal-oxide-semiconductor Q1 connects the first current limliting electricity
The drain electrode for hindering R9 and the second current-limiting resistance R10, the metal-oxide-semiconductor Q1 connects the light source.In the present embodiment, the metal-oxide-semiconductor Q1
Specially PMOS tube.
Concrete operating principle are as follows: when the mode selection module is allocated to the first gear, second gear is disconnected, the master
Control module U1 transmission first trigger signal is ended after making described metal-oxide-semiconductor Q1 conducting a period of time, after the light source lights 15s
It knocks out；This process is the warming-up process of lamps and lanterns, lights 15s normally with light source to determine that this lamps and lanterns is intact lamps and lanterns, Ke Yijin
One step uses.The time that lights of the light source sets before product export according to particular user demand, cannot be with the tool of light source
Body lights the time and limits the scope of protection of the present invention.
After warming-up process, start formal inductive mode；Since lamps and lanterns were used in the case where insufficient light, that
In the case where bright and clear, do not need to light lamps and lanterns；So when the photodiode Q2 does not sense optical signal
It just sends standby signal and shows ring at this time after the main control module U1 receives the standby signal to the main control module U1
Border is the environment of an insufficient light, general service condition, and someone just needs to light lamps and lanterns in a dark situation, one
Nobody a dark situation does not need lamps and lanterns yet and lights, so after main control module U1 receives standby signal, it is also necessary to described infrared
Sensor PIR senses the infrared signal that human body thermoelectric issues and sends opening signal to the main control module U1, makes described
Main control module U1, which sends the second trigger signal, is connected metal-oxide-semiconductor Q1 to the metal-oxide-semiconductor Q1, and the light source lights；Pass through again at this time
The switch state of the first current limiting switch HIGH and the second current limiting switch LOW are adjusted to adjust the brightness of light source；
Be described below two kinds it is normal and lamps and lanterns do not work when the mode selection module is allocated to the first gear in lamp performance
Situation:
(1) the photodiode Q2 senses optical signal, shows that lamps and lanterns are under bright and clear environment at this time, no
It needs using illuminations, then the photodiode Q2 does not just send standby signal to the main control module U1, the master
Control module U1 does not send the second trigger signal and is not turned on to the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q1, and the light source does not work.
(2) the photodiode Q2 does not sense that i.e. lamps and lanterns are the institutes in a dark situation at this time when optical signal
With photodiode Q2 transmission standby signal to the main control module U1, after the main control module U1 receives the standby signal,
The infrared sensor PIR does not sense the infrared signal that human body thermoelectric issues, although showing that lamps and lanterns are in one at this time
In a dark situation, but nobody passes through, and does not also need to light lamps and lanterns, so the infrared sensor PIR does not send opening signal
To main control module U1, the main control module U1 does not send the second trigger signal and is not turned on to the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q1,
The light source does not work.
In addition to above two gear, the mode selection module further includes third gear, and the third gear includes the 4th
Switch；One end of 4th switch connects the light source, the other end open circuit of the 4th switch, and the mode selection module is allocated to
When third gear, the light source is not formed into a loop with other components in circuit, and the light source does not work.
The present invention provides a kind of LED drive circuits of double mode switching, realize that a driving circuit makes lamps and lanterns while having
The switching of height gear light and lamps and lanterns torch mode under standby inductive mode；By controlling the first current limiting switch HIGH and second
The opening and closing of current limiting switch LOW are to adjust high low-light level of the light source in the first gear, especially by the first current limliting is arranged
The different resistance values of resistance R9 and the second current-limiting resistance R10 control the different brightness of light source；If needing torch mode, then only
Need to exchange to the second gear, after derailing switch is closed, the light source bright or go out then unrelated with main control module, it is only necessary to open or
The i.e. controllable light source of third current limiting switch ON is closed, realizes torch mode.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited to this,
Anyone skilled in the art in the technical scope disclosed by the present invention, using this design carries out the present invention non-
Substantive change belongs to the behavior for invading the scope of the present invention.
Claims (10)
1. a kind of LED drive circuit of double mode switching, it is characterised in that incude mould including main control module, illuminant module, living body
Block, mode selection module, light source, power module；The main control module connects the illuminant module and living body induction module；It is described
Light source is connected between the mode selection module and power module；The mode selection module includes the first gear, second gear
Position；First gear and the second gear are separately connected the light source；One is additionally provided between first gear and light source to open
Device is closed, the derailing switch is also connected with the main control module；
When the mode selection module is allocated to the first gear, second gear is disconnected, and the main control module receives starting letter
Number, main control module transmission the first trigger signal to the derailing switch is closed after so that the derailing switch is opened a period of time；Institute
State and send standby signal when illuminant module does not sense optical signal to the main control module, the main control module receive it is described to
After machine signal, the living body induction module sends opening signal to the main control module, the master control when sensing living body signal
Module, which sends the second trigger signal to the derailing switch, opens the derailing switch, and the light source is connected to the first gear, described
Light source lights；
When the mode selection module is allocated to the second gear, first gear is disconnected, and the light source lights.
2. a kind of LED drive circuit of double mode switching according to claim 1, which is characterized in that first gear
The first current limiting component is also connected between light source, first current limiting component is connected with current limiting switch, the model selection mould
When block is allocated to the first gear, the current limiting switch is opened, and the first current limiting component effect, the light-source brightness is lower.
3. a kind of LED drive circuit of double mode switching according to claim 2, which is characterized in that first current limliting
Component includes the first current-limiting resistance and the second current-limiting resistance；The current limiting switch includes the first current limiting switch, the second current limiting switch；
The both ends of first current-limiting resistance are separately connected the derailing switch and first current limiting switch, first current limiting switch
Both ends are separately connected first current-limiting resistance and power cathode；The both ends of second current-limiting resistance are separately connected the switch
Device and second current limiting switch, the both ends of second current limiting switch are separately connected second current-limiting resistance and power supply is negative
Pole.
4. a kind of LED drive circuit of double mode switching according to claim 3, it is characterised in that: open described first
Current limiting switch and second current limiting switch, the light source are in the first brightness；It opens first current limiting switch, closes described the
Two current limiting switches, the light source are in the second brightness；Second current limiting switch is opened, first current limiting switch is closed, it is described
Light source is in third brightness；First brightness is higher than the second brightness and third brightness.
5. a kind of LED drive circuit of double mode switching according to claim 1, which is characterized in that second gear
The second current limiting component is also connected between light source, second current limiting component is connected with third current limiting switch；The mode choosing
When selecting module and being allocated to the second gear, the third current limiting switch is opened, and the second current limiting component effect, the light-source brightness becomes
It is low.
6. a kind of LED drive circuit of double mode switching according to claim 5, which is characterized in that second current limliting
Component is specially third current-limiting resistance, and the both ends of the third current-limiting resistance are separately connected the light source and the third current limliting is opened
It closes, the both ends of the third current limiting switch are separately connected the third current-limiting resistance and power cathode；Open the third current limliting
Switch, the light source are in the 4th brightness.
7. a kind of LED drive circuit of double mode switching according to claim 3, which is characterized in that the main control module
Including living body induction interface, photosensitive interface and triggering interface；Living body induction module is specially infrared sensor, the infrared sensing
Device connects the living body and incudes interface.
8. a kind of LED drive circuit of double mode switching according to claim 7, which is characterized in that the illuminant module
Specially photodiode；The anode of the photodiode connects the photosensitive interface, the cathode ground connection of photodiode.
9. a kind of LED drive circuit of double mode switching according to claim 8, which is characterized in that the switch apparatus
Body is metal-oxide-semiconductor；The grid of the metal-oxide-semiconductor connects the triggering interface, and the source electrode of the metal-oxide-semiconductor connects first current-limiting resistance
And second current-limiting resistance, the drain electrode of the metal-oxide-semiconductor connect the light source.
10. a kind of LED drive circuit of double mode switching according to claim 9, it is characterised in that: the model selection
When module is allocated to the first gear, second gear is disconnected, and the main control module, which sends first trigger signal, makes the MOS
Pipe ends after conducting a period of time, and the light source knocks out after lighting a period of time；
The photodiode sends standby signal to the main control module when not sensing optical signal, the main control module connects
After receiving the standby signal, the infrared sensor sends opening signal extremely when sensing the infrared signal that human body thermoelectric issues
The main control module, the main control module, which sends the second trigger signal to the metal-oxide-semiconductor, is connected metal-oxide-semiconductor, and the light source lights；
Or the photodiode senses optical signal, the photodiode does not send standby signal to the main control module, described
Main control module does not send the second trigger signal to the metal-oxide-semiconductor, and the metal-oxide-semiconductor is not turned on, and the light source does not work；Or it is described photosensitive
Diode sends standby signal to the main control module when not sensing optical signal, the main control module receives the standby letter
After number, the infrared sensor does not sense the infrared signal that human body thermoelectric issues, and the infrared sensor, which is not sent, to be beaten
ON signal is to main control module, and the main control module does not send the second trigger signal to the metal-oxide-semiconductor, and the metal-oxide-semiconductor is not turned on, institute
Light source is stated not work；
The mode selection module further includes third gear, and the third gear includes the 4th switch；The one of 4th switch
End connects the light source, and the other end open circuit of the 4th switch, when the mode selection module is allocated to third gear, the light source is not
It is bright.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590670.8A CN109862658A (en) | 2018-12-25 | 2018-12-25 | A kind of LED drive circuit of double mode switching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590670.8A CN109862658A (en) | 2018-12-25 | 2018-12-25 | A kind of LED drive circuit of double mode switching |
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| CN109862658A true CN109862658A (en) | 2019-06-07 |
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| CN201811590670.8A Pending CN109862658A (en) | 2018-12-25 | 2018-12-25 | A kind of LED drive circuit of double mode switching |
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| JP2016219389A (en) * | 2015-05-26 | 2016-12-22 | パナソニックＩｐマネジメント株式会社 | Luminaire |
| CN209982777U (en) * | 2018-12-25 | 2020-01-21 | 厦门阳光恩耐照明有限公司 | LED drive circuit with dual-mode switching |
| CN211125754U (en) * | 2019-12-30 | 2020-07-28 | 苏州凯毅斯智能驱动技术有限公司 | Battery pack heat conduction device and battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011049050A (en) * | 2009-08-27 | 2011-03-10 | Kyocera Corp | Lighting control device, and mobile phone |
| CN201718075U (en) * | 2010-06-19 | 2011-01-19 | 中山市三乡镇高集电子厂 | Intelligent LED lamp |
| JP2012174972A (en) * | 2011-02-23 | 2012-09-10 | Jm Energy Corp | Power storage device |
| CN202756947U (en) * | 2012-06-27 | 2013-02-27 | 深圳市中世纵横设计有限公司 | Multi-function sensing light |
| CN202979420U (en) * | 2012-12-20 | 2013-06-05 | 四川新力光源股份有限公司 | Daylight lamp automatically switchable in brightness grade |
| JP2016219389A (en) * | 2015-05-26 | 2016-12-22 | パナソニックＩｐマネジメント株式会社 | Luminaire |
| CN209982777U (en) * | 2018-12-25 | 2020-01-21 | 厦门阳光恩耐照明有限公司 | LED drive circuit with dual-mode switching |
| CN211125754U (en) * | 2019-12-30 | 2020-07-28 | 苏州凯毅斯智能驱动技术有限公司 | Battery pack heat conduction device and battery pack |
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