CN109661060A - Control circuit and LED light emission device suitable for LED light emission device - Google Patents
Control circuit and LED light emission device suitable for LED light emission device Download PDFInfo
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- CN109661060A CN109661060A CN201811495887.0A CN201811495887A CN109661060A CN 109661060 A CN109661060 A CN 109661060A CN 201811495887 A CN201811495887 A CN 201811495887A CN 109661060 A CN109661060 A CN 109661060A
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- led light
- photosensitive module
- control circuit
- light emission
- emission device
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides the control circuit and LED light emission device for being suitable for LED light emission device, wherein the control circuit includes: the first photosensitive module, the change of interference illumination of the light sensitive characteristic with external environment illumination and from internal light source and change；Second photosensitive module connects first photosensitive module；Wherein, the light sensitive characteristic of second photosensitive module also changes with the change of the interference illumination from internal light source, to offset influence of the interference illumination to the light sensitive characteristic of first photosensitive module.In improved LED lamp provided by the invention, the interference illumination such as RT1 refraction light by from lamp interior synchronous with RT2 is influenced, influence of the interference illumination to RT1 is offset using the light characteristics variation of RT2, to maintain the voltage value of V0 point constant, the impregnable purpose of the on off operating mode to reach LED lamp.
Description
Technical field
The present invention relates to optical technical fields, send out more particularly to the control circuit and LED for being suitable for LED light emission device
Electro-optical device.
Background technique
In recent years, as the promotion of LED luminous efficiency and the gradually decline of overall cost, LED general illumination welcome
The period of expansion of high speed.At the same time, as LED is intelligentized increasing, sensor is also widely used for all kinds of LED lamps
On.
The especially LED lamp of built-in sensors mode is widely used in LED illumination city due to its peculiar advantage
?.But photosensitive sensor is usually placed in by lamp interior light-emitting surface using the LED lamp of built-in sensors mode, it is examining
While measuring ambient light illumination, the illumination of itself light is also detected, this can seriously affect the working condition of photosensitive sensor,
Photosensitive sensor is caused frequently to change.
Therefore, the interference for using itself light inside the LED lamp of built-in sensors mode in the prior art how is solved, at
The technical issues of for this field urgent need to resolve.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide one kind to be suitable for LED light emission device
Control circuit, for solving in the prior art using the skills such as interference of itself light inside the LED lamp of built-in sensors mode
Art problem.
In order to achieve the above objects and other related objects, the present invention provides a kind of control electricity suitable for LED light emission device
Road comprising: the first photosensitive module, the change of interference illumination of the light sensitive characteristic with external environment illumination and from internal light source
And it changes；Second photosensitive module connects first photosensitive module；Wherein, the light sensitive characteristic of second photosensitive module
Also it changes with the change of the interference illumination from internal light source, to offset interference illumination to first photosensitive module
The influence of light sensitive characteristic.
In one embodiment of the invention, the first end of first photosensitive module connects power supply, second end driving three
End-apparatus part is to control the on-off of LED light source；The first end of second photosensitive module connects the second of first photosensitive module
End, second end are connected to the ground.
In one embodiment of the invention, first photosensitive module includes the first light-sensitive device and first being connected in parallel
Resistance；Second photosensitive module include second resistance and with the second light-sensitive device of second resistance parallel connection mutually concatenated and
3rd resistor；Wherein, the second end of first photosensitive module connects the first end of the 4th resistance, and the of the 4th resistance
Two ends connect the input terminal of the three terminal device.
In one embodiment of the invention, at least one electricity is also connected between the input terminal and ground of the three terminal device
Hold.
In one embodiment of the invention, zener diode is also connected between the input terminal and ground of the three terminal device.
In one embodiment of the invention, the type of first light-sensitive device and the second light-sensitive device includes: photosensitive electricity
Resistance, photodiode, phototriode and any one or more of combination of photoelectric tube.
In one embodiment of the invention, the type of the three terminal device includes triode；Wherein, the described first photosensitive mould
The second end of block connects the base stage of the triode.
In one embodiment of the invention, the type of the three terminal device includes thyristor；Wherein, the described first photosensitive mould
The second end of block connects the grid of the thyristor.
In one embodiment of the invention, the second end of first photosensitive module connects a delay circuit, to inhibit to come
From the illuminance abrupt variation interference inside or outside device.
In order to achieve the above objects and other related objects, the present invention provides a kind of LED light emission device comprising the control
Circuit.
As described above, the control circuit and LED light emission device suitable for LED light emission device of the invention, has following
The utility model has the advantages that traditional LED light emission device is designed since structure of the invention is not used, therefore photosensitive sensor is highly prone to LED
Itself light of the influence of light lamp lens lateral light, lamp interior can laterally reach photosensitive sensor by glass.In use process
In, when external environment illumination reaches unlocking condition, LED lamp is opened by control circuit route, but at this time due to photosensitive biography
Sensor is interfered illumination to be influenced and changes its light characteristics by the refraction light etc. from lamp interior, so that the LED light opened
Tool is closed once more, repeatedly, causes LED lamp to be in the state for repeating to open and close, it is unfavorable that appearance persistently flashes
Situation.In improved LED lamp provided by the invention, the interference such as RT1 refraction light by from lamp interior synchronous with RT2
The influence of illumination offsets influence of the interference illumination to RT1 using the light characteristics variation of RT2, to maintain the voltage value of V0 point
It is constant, the impregnable purpose of on off operating mode to reach LED lamp.
Detailed description of the invention
Fig. 1 is shown as the schematic diagram in one embodiment of the invention suitable for the control circuit of LED light emission device.
Fig. 2 is shown as the schematic diagram in one embodiment of the invention suitable for the control circuit of LED light emission device.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that with reference to attached drawing, attached drawing describes several embodiments of the application in described below.It should
Understand, other embodiments also can be used, and mechanical group can be carried out without departing substantially from spirit and scope
At, structure, electrical and operational change.Following detailed description should not be considered limiting, and the application
The range of embodiment only limited by the claims for the patent announced.Term used herein is merely to description is specific
Embodiment, and it is not intended to limit the application.The term of space correlation, for example, "upper", "lower", "left", "right", " following ", " under
Side ", " lower part ", " top ", " top " etc. can be used in the text in order to elements or features shown in explanatory diagram and another
The relationship of one elements or features.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation ",
Terms such as " fixings " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in the present invention.
Furthermore as used in herein, singular " one ", "one" and "the" are intended to also include plural number shape
Formula, unless there is opposite instruction in context.It will be further understood that term "comprising", " comprising " show that there are the spies
Sign, operation, element, component, project, type, and/or group, but it is not excluded for one or more other features, operation, element, group
Presence, appearance or the addition of part, project, type, and/or group.Term "or" and "and/or" used herein are interpreted as including
Property, or mean any one or any combination.Therefore, " A, B or C " or " A, B and/or C " mean " it is following any one:
A；B；C；A and B；A and C；B and C；A, B and C ".Only when the combination of element, functions or operations is inherently mutual under certain modes
When repulsion, it just will appear the exception of this definition.
Photosensitive sensor is usually placed in light-emitting surface inside LED lamp by traditional LED lamp, and photosensitive sensor is caused to exist
Detect itself illumination that can be also detected inside LED while ambient light illumination, this results in the light characteristics of photosensitive sensor
It frequently changes and influences its working condition, the rough sledding frequently flashed then can accordingly occur for LED light emission device.
It is present in unsolved technical problem in traditional LED lamp tool in view of above-mentioned these and has influenced normally making for user
With the present invention provides the control circuit for being suitable for LED light emission device and LED light emission device to solve the problems, such as those.The present invention makes
It is designed with double photosensitive sensors, wherein a photosensitive sensor is for detecting external environment illumination and the interference from internal light source
Illumination, another photosensitive sensor are served only for detecting the interference illumination from internal light source, for eliminating LED lamp interior lights photograph
It influences, to solve traditional LED lamp tool because photosensitive sensor frequently changes what lamps and lanterns caused by its working condition glimpsed
Technical problem.Hereafter, it will illustrate the working principle of the invention in conjunction with specific embodiments.
As shown in Figure 1, showing the schematic diagram for being suitable for the control circuit of LED light emission device in one embodiment of the invention.Institute
It states control circuit and includes the first photosensitive module 11 and the second photosensitive module 12, first photosensitive module 11 and the second photosensitive module
12 are connected.Interference illumination of the light sensitive characteristic of first photosensitive module 11 with external environment illumination and from internal light source changes
Become and change, the light sensitive characteristic of second photosensitive module 12 is also sent out with the change of the interference illumination from internal light source
It is raw to change, to offset the influence of the interference illumination to the light sensitive characteristic of first photosensitive module from internal light source.
Specifically, first photosensitive module 11 first end connect power Vcc, second end drive three terminal device 13 with
Control the on-off of LED light source.The first end of second photosensitive module 12 connects the second end of first photosensitive module 11,
Second end is connected to the ground.
In this present embodiment, the second end of first photosensitive module 11 both can drive three end-apparatus in such a way that electric current drives
The on-off of part 13 can drive three terminal device 13 in such a way that voltage drives.By taking voltage driving mode as an example, when flowing through described
When the electric current of one photosensitive module 11 becomes smaller, distribute to first photosensitive module 11 second end voltage (hereinafter referred to as V0) with
Become larger, when V0 be large enough to driving three terminal device 13 when, then the port 2 and port 3 of three terminal device 13 will be connected, to enable
LED light source shines.It is similar therewith, when the electric current for flowing through first photosensitive module 11 becomes larger, distribute to the voltage of V0
Become smaller therewith, when V0 can not as low as drive three terminal device 13, then the port 2 and port 3 of three terminal device 13 will disconnect, thus
LED light source is enabled to stop shining.
It should be noted that the naming method of the first end and second end of device is for distinguishing the device in the application
A kind of mode of port, to facilitate it will be appreciated by those skilled in the art that the naming method is not to the specific of device interface meaning
Limit the limitation nor to port order.
As shown in Fig. 2, showing the schematic diagram for being suitable for the control circuit of LED light emission device in further embodiment of this invention.
In this present embodiment, the first photosensitive module includes the first light-sensitive device RT1 and first resistor R1 being connected in parallel；First light
The second end of quick module connects the first end of the 4th resistance R4；The input terminal of the second end connection three terminal device Q1 of 4th resistance R4
1, the second photosensitive module includes second resistance R2 and second light-sensitive device that is serially connected in parallel with the second resistance R2
RT2 and 3rd resistor R3.
The type of the three terminal device includes triode and/or thyristor.When the three terminal device is triode, three poles
The base stage of pipe Q1 is connected with the second end of the 4th resistance R4；When the voltage of distribution to triode Q1 base stage is greatly to being connected the triode
When, the collector and emitter conducting of triode Q1, and when the triode is not enough connected in the voltage of distribution to triode Q1 base stage
When, the collector and emitter of triode Q1 disconnects.When the three terminal device is thyristor, the grid of thyristor and the 4th electricity
The second end for hindering R4 is connected, the source electrode and drain electrode of conducting thyristor in high level, and the cutoff thyristor in low level
Source electrode and drain electrode.
The type of first light-sensitive device and the second light-sensitive device includes: photo resistance, photodiode, photosensitive three pole
Pipe and any one or more of combination of photoelectric tube.The photo resistance is that a kind of light characteristics become with the variation of illumination
The resistance of change is embodied under the light irradiation of specific wavelength, and the resistance value of photo resistance is reduced rapidly.The photodiode
Also known as photodiode is a kind of optical detector that light can be converted into electric current or voltage signal according to usage mode,
Tube core is often used the PN junction with photosensitive feature, very sensitive to the variation of light, can be changed in circuit using illumination power
Electric current.The collector current of the phototriode is not only by base circuit and current control, while also by the control of light radiation.
It may be noted that how to change the means of circuital current using light-sensitive device is not that the application is paid close attention to, in this field skill
In technical level that art personnel generally grasp and the knowledge understood thoroughly, it is all can be changed by illumination variation its light characteristics to
The device for changing circuital current can be applied in control circuit provided by the present application.
The working method of control circuit provided in this embodiment is as follows: detecting light sensor based on the first light-sensitive device RT1
Device is responsible for detection external environment illumination and the interference illumination from internal light source；Second light-sensitive device RT2 is compensation photosensor
Part is responsible for interference illumination of the detection from internal light source.Preferably, by internal structure design, so that the first light-sensitive device RT1
Illumination caused by luminous surface glass can only be received towards lamp interior with the second light-sensitive device RT2, and guarantees the first photosensor
The inside light acceptance amount of part RT1 and the second light-sensitive device RT2 are approximately equal.Therefore, when external environment illumination changes, the first light
Sensing device RT1 receives the variation of external environment illumination value and accordingly changes the current value flowed through, is controlled by changing V0 voltage value
The on-off of LED light source.
When the first light-sensitive device RT1 because shine surface glass the reason of receive internal interference illumination due to change and flow through electric current
When, also because of internal interference illumination the curent change synchronous with the first light-sensitive device RT1 can occur for the second light-sensitive device RT2, from
And V0 point voltages keep constant is kept, the impregnable purpose of the on off operating mode to reach LED light source.
Using V0 point as electric current convergent point, the specific calculation of electric current is as follows:Wherein, Irt1 is the electric current for flowing through the first light-sensitive device RT1, and Irt2 is to flow through the
The electric current of two light-sensitive device RT2, Ir3 are the electric current for flowing through the 4th resistance R4.By the current equations it is found that electric current Irt1 and electric current
Irt2 is distributed in both ends of the equation, therefore equation can be maintained to balance when electric current Irt1 and electric current Irt2 change in the same direction.Wherein, compensating line
The parameter value of each device according to required V0 voltage value and can determine according to the following formula on the road: Ir2* (R3+RT2)=V0.
In one embodiment, the second end of first photosensitive module connects a delay circuit, to inhibit in device
The interference of the illuminance abrupt variation of portion or outside.Be analyzed as follows now in conjunction with Fig. 2: first resistor R1's and the first light-sensitive device RT1 is common defeated
Outlet connects the delay circuit that is made of the 4th resistance R4 and capacitor C1, capacitor C2, is inhibited with the time-delay characteristics by circuit
The interference of illuminance abrupt variation, avoiding device flash with interference illumination.
Specifically, when flickering occurs in the illumination inside or outside device, in the control electricity without delay function
Lu Zhong, LED light source is by the frequent switching with the flickering of interference illumination and between on state and closed state, this is by serious shadow
The Experience Degree rung to user also easily damages lamps and lanterns itself.And in the control circuit with delay function, in ambient lighting or
Person's device interior lights are broken forth in the case where existing flickering, such as illumination is dimmed suddenly, then control circuit can be maintained because of delay function
LED light source tends to remain on, and avoids LED light source frequent switching between on state and closed state, effectively inhibits dry
Disturb the adverse effect of illumination.
It should be noted that the composition of delay circuit includes but is not limited to the RC delay circuit in the present embodiment, other
Embodiment in the delay circuit of such as 555 chips composition, the delay circuit that single amplifier is constituted or transistor can also be used prolong
When circuit etc., this is not limited by the present invention.On the other hand, in RC delay circuit, the quantity of capacitor can be one, can also
It is preferably several, in order to adjust the capacitance in circuit.
In one embodiment, the control circuit further includes the zener diode ZD1 for stable voltage, the pressure stabilizing
Diode ZD1 is parallel between the base stage of triode Q1 and ground GND.
The present invention also provides a kind of LED light emission devices, including the control circuit in above-described embodiment.Because the LED shines
The embodiment of device is similar with the embodiment of the control circuit, therefore details are not described herein again.
It is worth noting that, traditional LED light emission device is designed since structure of the invention is not used, therefore photosensitive sensor
It is highly prone to the influence of LED light lamp lens lateral light, itself light of lamp interior can laterally reach photosensitive sensor by glass.
In use, when external environment illumination reaches unlocking condition, LED lamp is opened by control circuit route, but at this time
Since photosensitive sensor is interfered illumination to be influenced by the refraction light etc. from lamp interior and change its light characteristics, so that opening
The LED lamp opened is closed once more, repeatedly, LED lamp is caused to be in the state for repeating to open and close, and lasting dodge occurs
Bright rough sledding.In improved LED lamp provided by the invention, RT1 is synchronous with RT2 by the refraction from lamp interior
Light etc. interferes the influence of illumination, influence of the interference illumination to RT1 is offset using the light characteristics variation of RT2, to maintain V0 point
Voltage value it is constant, the impregnable purpose of on off operating mode to reach LED lamp.
In conclusion the present invention provide be suitable for LED light emission device control circuit and LED light emission device, RT1 and
The interference illumination such as the synchronous refraction light by from lamp interior of RT2 are influenced, and offset interference using the light characteristics variation of RT2
Influence of the illumination to RT1, thus maintain the voltage value of V0 point constant, the impregnable mesh of the on off operating mode to reach LED lamp
's.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of control circuit suitable for LED light emission device characterized by comprising
First photosensitive module, the change of interference illumination of the light sensitive characteristic with external environment illumination and from internal light source and occur
Change；
Second photosensitive module connects first photosensitive module；Wherein, the light sensitive characteristic of second photosensitive module is also with coming from
The change of the interference illumination of internal light source and change, to offset interference illumination to the light sensitive characteristic of first photosensitive module
Influence.
2. the control circuit according to claim 1 suitable for LED light emission device characterized by comprising
The first end of first photosensitive module connects power supply, and second end drives three terminal device to control the on-off of LED light source；
The first end of second photosensitive module connects the second end of first photosensitive module, and second end is connected to the ground.
3. the control circuit according to claim 2 suitable for LED light emission device characterized by comprising
First photosensitive module includes the first light-sensitive device being connected in parallel and first resistor；
Second photosensitive module include second resistance and with the second light-sensitive device of second resistance parallel connection mutually concatenated and
3rd resistor；
Wherein, the second end of first photosensitive module connects the first end of the 4th resistance, and the second end of the 4th resistance
Connect the input terminal of the three terminal device.
4. the control circuit according to claim 3 suitable for LED light emission device, which is characterized in that the three terminal device
Input terminal and ground between be also connected at least one capacitor.
5. the control circuit according to claim 3 suitable for LED light emission device, which is characterized in that the three terminal device
Input terminal and ground between be also connected with zener diode.
6. the control circuit according to claim 3 suitable for LED light emission device, which is characterized in that described first is photosensitive
The type of device and the second light-sensitive device includes: any one of photo resistance, photodiode, phototriode and photoelectric tube
Or multiple combinations.
7. the control circuit according to claim 2 suitable for LED light emission device, which is characterized in that the three terminal device
Type include triode；Wherein, the second end of first photosensitive module connects the base stage of the triode.
8. the control circuit according to claim 2 suitable for LED light emission device, which is characterized in that the three terminal device
Type include thyristor；Wherein, the second end of first photosensitive module connects the grid of the thyristor.
9. the control circuit according to claim 2 suitable for LED light emission device, which is characterized in that described first is photosensitive
The second end of module connects a delay circuit, to inhibit the illuminance abrupt variation interference inside or outside device.
10. a kind of LED light emission device, which is characterized in that including control circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495887.0A CN109661060A (en) | 2018-12-07 | 2018-12-07 | Control circuit and LED light emission device suitable for LED light emission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495887.0A CN109661060A (en) | 2018-12-07 | 2018-12-07 | Control circuit and LED light emission device suitable for LED light emission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109661060A true CN109661060A (en) | 2019-04-19 |
Family
ID=66113076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811495887.0A Pending CN109661060A (en) | 2018-12-07 | 2018-12-07 | Control circuit and LED light emission device suitable for LED light emission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109661060A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064004U (en) * | 1988-12-13 | 1990-10-17 | 李炳基 | Photo-controlled myopia-proof table lamp |
| US20010038081A1 (en) * | 2000-04-28 | 2001-11-08 | Koninklijke Electronics N. V. | Circuit with an optocoupler |
| JP2005101925A (en) * | 2003-09-25 | 2005-04-14 | Sharp Corp | Switch with light sensing function and lighting equipment using it |
| CN1898997A (en) * | 2003-11-03 | 2007-01-17 | 美国芯源***股份有限公司 | Driver for light source having integrated photosensitive elements for driver control |
-
2018
- 2018-12-07 CN CN201811495887.0A patent/CN109661060A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064004U (en) * | 1988-12-13 | 1990-10-17 | 李炳基 | Photo-controlled myopia-proof table lamp |
| US20010038081A1 (en) * | 2000-04-28 | 2001-11-08 | Koninklijke Electronics N. V. | Circuit with an optocoupler |
| JP2005101925A (en) * | 2003-09-25 | 2005-04-14 | Sharp Corp | Switch with light sensing function and lighting equipment using it |
| CN1898997A (en) * | 2003-11-03 | 2007-01-17 | 美国芯源***股份有限公司 | Driver for light source having integrated photosensitive elements for driver control |
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