CN203446057U - Light adjusting circuit and lighting device with adjustable light - Google Patents
Light adjusting circuit and lighting device with adjustable light Download PDFInfo
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- CN203446057U CN203446057U CN201320500101.6U CN201320500101U CN203446057U CN 203446057 U CN203446057 U CN 203446057U CN 201320500101 U CN201320500101 U CN 201320500101U CN 203446057 U CN203446057 U CN 203446057U
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Abstract
The embodiment of the utility model discloses a light adjusting circuit and a lighting device with adjustable light, relating to the technical field of lighting. The light adjusting circuit comprises an input unit, a sectional light adjusting unit and an output unit. The input unit is respectively connected with a power supply and the sectional light adjusting unit and is used for inputting a voltage or current signal to the sectional light adjusting unit. The sectional light adjusting unit is connected with the output unit and is used for outputting a voltage or current signal corresponding to different brightness to the output unit according to the operation of a user. The output unit is used for outputting the received voltage or current signal corresponding to different brightness to a light emitting device and is used for driving the light emitting device to emit light. By using the light adjusting circuit, the sectional light adjusting of the lighting device can be realized, and a stroboscopic phenomenon caused by the continuous changed of current is avoided.
Description
Technical field
The utility model relates to lighting technical field, relates in particular to a kind of light adjusting circuit and Dimmable lighting equipment.
Background technology
Along with the development of technology, LED(Light Emitting Diode, light-emitting diode) as a kind of luminescent device, in various lighting fields, be widely used.With traditional luminescent device (as incandescent lamp, CCFL(Cold Cathode Fluorescent Lamp, cold-cathode fluorescence lamp) etc.) compare, due to LED light source have energy-conservation, highlighted, without advantages such as infrared and ultra-violet radiations, therefore adopt LED to make lighting and can adapt to current people for the requirement of green, energy-conservation and environmental protection.
In order to meet people for the different application demand of lighting, the various light modulation forms that can control luminescent device brightness variation are also arisen at the historic moment.To change the control mode of incandescent lamp luminosity different from be applied to effective voltage on incandescent lamp by change, because LED luminescent device is current driving apparatus, for existing LED luminescent device, normally adopt the combination of controllable silicon and potentiometer to realize brilliance control by changing the electric current of driving LED luminescent device.A kind of like this weak point of silicon controlled light adjusting circuit that adopts is, light modulation process is conventionally carried out the random of non-segmented according to user's operation and is changed continuously, change at random due to electric current, in the process of carrying out light modulation because controllable silicon has increased harmonic constant and electromagnetic interference, thereby can produce noise because of the filtering device of LED driving power end, there is the stroboscopic phenomenon that naked eyes can be observed, have a strong impact on user's use impression.
Utility model content
Embodiment of the present utility model provides a kind of light adjusting circuit and Dimmable lighting equipment, can realize sectional dimming, avoids changing because of current continuity the stroboscopic phenomenon causing.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The one side of the utility model embodiment, provides a kind of light adjusting circuit, comprising: input unit, sectional dimming unit and output unit;
Described input unit, connects respectively power supply and described sectional dimming unit, for to described sectional dimming unit input voltage or current signal;
Described sectional dimming unit, also connects described output unit, for voltage or the current signal to the corresponding different brightness of described output unit output according to user's operation;
Described output unit, for exporting voltage or the current signal of the different brightness of the correspondence receiving to luminescent device, for driving described luminescent device luminous.
Further, described input unit comprises: electromagnetic compatibility module and rectification filtering module;
Described electromagnetic compatibility module comprises the first inductance, the second inductance and the first resistance;
The first end of described the first inductance connects described power supply, and the second end of described the first inductance connects described rectification filtering module; The second end of described the second inductance connects described sectional dimming unit; Described the first resistance and described the second inductance in parallel;
Described rectification filtering module comprises rectifier bridge, the first electric capacity and the second electric capacity;
Described rectifier bridge connects respectively the second end of described the first inductance and the first end of described the second inductance; One end of described the first electric capacity connects the first end of described the second inductance, and the other end of described the first electric capacity connects described rectifier bridge; One end of described the second electric capacity connects the second end of described the second inductance, and the other end of described the second electric capacity connects described rectifier bridge.
Described sectional dimming unit comprises: start module, light modulation chip and switch drive module;
Described startup module comprises the second resistance, the 3rd resistance, the 4th resistance and the 3rd electric capacity;
One end of described the second resistance connects described input unit, and the other end of described the second resistance connects described the 3rd resistance; The other end of described the 3rd resistance connects respectively described the 4th resistance and described light modulation chip; The other end ground connection of described the 4th resistance; Described the 3rd electric capacity is in parallel with described the 4th resistance;
Described light modulation chip also, by the 4th capacity earth, connects described input unit by the 5th resistance, by the 5th electric capacity, connects driving power;
Described switch drive module comprises the 6th resistance, transistor and the first diode;
One end of described the 6th resistance connects described light modulation chip, and the other end of described the 6th resistance connects described transistorized grid; Described transistorized first utmost point connects described input unit, and described transistorized second utmost point connects respectively the negative pole of described light modulation chip and described the first diode; The plus earth of described the first diode.
Described light modulation chip adopts and comprises: two-period form light modulation chip, three section type light regulating chip or non-pole light regulating chip.
Described output unit comprises:
The 3rd inductance, the first end of described the 3rd inductance connects described sectional dimming unit, and the second end of described the 3rd inductance connects luminescent device;
The 7th resistance, one end of described the 7th resistance connects the second end of described the 3rd inductance, and the other end of described the 7th resistance connects respectively described luminescent device and ground connection;
The 6th electric capacity and the 7th electric capacity are all in parallel with described the 7th resistance.
Wherein, described light adjusting circuit can also comprise:
Feedback detecting unit, described feedback detecting unit is connected with described output unit with described sectional dimming unit respectively, so that described sectional dimming unit is according to the feedback signal regulation output signal of described output unit.
Concrete, described feedback detecting unit comprises: output sampling feedback module and detection module;
Described output sampling feedback module comprises the 8th resistance and the 9th resistance;
One end of described the 8th resistance connects described transistorized second utmost point, and the other end of described the 8th resistance connects the first end of described the 3rd inductance; Described the 9th resistance is in parallel with described the 8th resistance;
Described detection module comprises the second diode, the tenth resistance and the 11 resistance;
The positive pole of described the second diode connects the convertible tip of described the 3rd inductance, and the negative pole of described the second diode connects described the tenth resistance; The other end of described the tenth resistance connects one end of described the 5th electric capacity; One end of described the 11 resistance connects the convertible tip of described the 3rd inductance, and the other end of described the 11 resistance connects described light modulation chip.
The utility model embodiment on the other hand, provides a kind of Dimmable lighting equipment, comprising: light adjusting circuit and luminescent device, described light adjusting circuit comprises light adjusting circuit as above.
Wherein, described luminescent device comprises Light-Emitting Diode.
Further, described Dimmable lighting equipment also comprises:
Fluorescent tube;
Be positioned at the plug of described lamp tube ends;
Be arranged at the heat radiating metal of described fluorescent tube inside;
Described luminescent device is arranged at the surface of described heat radiating metal;
Described light adjusting circuit is arranged at the inside of described plug;
Described fluorescent tube and described plug all adopt insulating material to make.
The light adjusting circuit that the utility model embodiment provides and Dimmable lighting equipment, adopt sectional dimming unit, thereby can come to voltage or the current signal of the corresponding different brightness of luminescent device output according to user's operation.Adopt controllable silicon light modulation different from prior art, a kind of like this light adjusting circuit can be realized sectional dimming, thereby has avoided because current continuity changes the stroboscopic phenomenon causing, and has greatly improved user's use impression.
Accompanying drawing explanation
The structural representation of a kind of light adjusting circuit that Fig. 1 provides for the utility model embodiment;
The structural representation of another light adjusting circuit that Fig. 2 provides for the utility model embodiment;
The circuit connection structure schematic diagram of a kind of light adjusting circuit that Fig. 3 provides for the utility model embodiment;
The structural representation of a kind of Dimmable lighting equipment that Fig. 4 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain, belongs to the scope that the utility model is protected.
The light adjusting circuit that the utility model embodiment provides, as shown in Figure 1, comprising: input unit 11, sectional dimming unit 12 and output unit 13.
Wherein, input unit 11 connects respectively power supply and sectional dimming unit 12, for to sectional dimming unit 12 input voltages or current signal.
The light adjusting circuit that the utility model embodiment provides, adopts sectional dimming unit, thereby can come to voltage or the current signal of the corresponding different brightness of luminescent device output according to user's operation.Adopt controllable silicon light modulation different from prior art, a kind of like this light adjusting circuit can be realized sectional dimming, thereby has avoided because current continuity changes the stroboscopic phenomenon causing, and has greatly improved user's use impression.
It should be noted that, the light adjusting circuit that the utility model embodiment provides goes for regulating known various dependence voltage or the luminescent device of current drives, for example incandescent lamp, fluorescent lamp or LED lamp.Especially for LED lamp, existing light adjusting circuit adopts ghyristor circuit to be difficult to carry out the segmented adjusting of brightness conventionally.In the utility model embodiment, adopt a kind of like this segmented light adjusting circuit, can realize according to user's operation the segmented adjusting of brightness, wherein user's mode of operation can have a lot, the segmentation that for example can realize by circuit being carried out to the switch motion of different number of times brightness is switched, certainly this only illustrates, and the utility model is not limited to this.
Electromagnetic compatibility module 111(EMC) and rectification filtering module 112 further, as shown in Figure 2, input unit 11 specifically can comprise:.In process used in everyday, light adjusting circuit connects the alternating current of 220V conventionally, adopts a kind of like this electromagnetic compatibility module 111 and rectification filtering module 112 can effectively filter out unnecessary noise, realizes the stable input of signal.
As shown in Figure 3, electromagnetic compatibility module 111 can comprise again the first inductance L 1, the second inductance L 2 and the first resistance R 1.Concrete, the first inductance L 1 can adopt common mode inductance, and the second inductance L 2 can adopt differential mode inductance.
Wherein, the first end of the first inductance L 1 connects power supply, and the second end of the first inductance L 1 connects rectification filtering module 112.The second end connection segment light modulation unit 12 of the second inductance L 2.The first resistance R 1 is in parallel with the second inductance L 2.
Further, as shown in Figure 3, rectification filtering module 112 can also comprise rectifier bridge DB, the first capacitor C 1 and the second capacitor C 2.
Wherein, rectifier bridge DB connects respectively the second end of the first inductance L 1 and the first end of the second inductance L 2.One end of the first capacitor C 1 connects the first end of the second inductance L 2, and the other end of the first capacitor C 1 connects rectifier bridge DB.One end of the second capacitor C 2 connects the second end of the second inductance, and the other end of the second capacitor C 2 connects rectifier bridge DB.
Adopt a kind of like this electromagnetic compatibility module 111 and rectification filtering module 112 can effectively filter out unnecessary noise, realize the stable input of signal.
Further, as shown in Figure 2, sectional dimming unit 12 can comprise: start module 121, light modulation chip 122 and switch drive module 123.
As shown in Figure 3, start module 121 and specifically can comprise the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and the 3rd capacitor C 3.
Wherein, one end of the second resistance R 2 connects input unit 11, and the second resistance R 2 is connected with the second inductance L 2, and the other end of the second resistance R 2 connects the 3rd resistance R 3.The other end of the 3rd resistance R 3 connects respectively the 4th resistance R 4 and light modulation chip 122.The other end ground connection of the 4th resistance R 4.The 3rd capacitor C 3 is in parallel with the 4th resistance R 4.
Further, light modulation chip 122, also by the 4th capacitor C 4 ground connection, connects input unit 11 by the 5th resistance R 5, by the 5th resistance R 5, is connected with the second inductance L 2, by the 5th capacitor C 5, connects driving power VDD.
It should be noted that, in the utility model embodiment, light modulation chip specifically can adopt and comprise: the various light modulation chips with different adjustment gear such as two-period form light modulation chip, three section type light regulating chip or non-pole light regulating chip.Wherein, adopt x segmentation light modulation chip to represent that this light adjusting circuit can realize the adjusting to the x kind brightness of luminescent device.The two-period form light modulation chip of take is example, when luminescent device is lighted completely, it is in the first luminance state, can stipulate that any one luminance state (as partly lighted) between lighting completely and closing is the second luminance state, when user opens the switch of light adjusting circuit for the first time, luminescent device is in complete illuminating state, when user's quick closedown is also opened switch again fast, luminescent device switches to the second brightness (partly lighting) state, and other various segmentation light modulation chips in like manner.Non-pole light regulating chip is different from segmentation light modulation chip, non-pole light regulating chip does not preset various luminance state gear, when user opens the switch of non-pole light regulating circuit for the first time, luminescent device is in complete illuminating state, when user's quick closedown is also opened switch again fast, the brightness of luminescent device will start brightness from complete bright state and reduce gradually, when being reduced to the brightness of user's needs, user again quick closedown also opens switch again fast, thereby realizes the sectional dimming of luminescent device.
Concrete, the light modulation chip that the utility model embodiment provides can adopt High Power Factor (PF) the value constant current chip with segmented dimming function.So, can when realizing sectional dimming, further prevent the generation of stroboscopic phenomenon, further improve the quality of product.
Further, as shown in Figure 3, switch drive module 123 can comprise the 6th resistance R 6, transistor Q and the first diode D1.
Wherein, one end of the 6th resistance R 6 connects the grid of the other end connection transistor Q of light modulation chip 122, the six resistance R 6.First utmost point of transistor Q connects input unit 11, is connected with the second inductance L 2, and second utmost point of transistor Q connects respectively the negative pole of light modulation chip 122 and the first diode D1.The plus earth of the first diode D1.
The transistor adopting in the utility model embodiment can be thin-film transistor or field effect transistor or the identical device of other characteristics, because the transistorized source electrode adopting here, drain electrode are symmetrical, so its source electrode, drain electrode are as broad as long.In addition, according to transistorized characteristic, distinguish and transistor can be divided into N-type transistor or P transistor npn npn, in the utility model embodiment, when adopting N-type transistor, it first can be extremely source electrode, and second can be extremely drain electrode, when adopting P transistor npn npn, its first can be extremely drain electrode, second can be extremely source electrode.
Further, as shown in Figure 3, output unit 13 specifically can comprise:
The second end of first end connection segment light modulation unit 12, the three inductance L 3 of the 3rd inductance L 3, the three inductance L 3 connects luminescent device.
One end of the 7th resistance R 7, the seven resistance R 7 connects the second end of the 3rd inductance L 3, and the other end of the 7th resistance R 7 connects respectively luminescent device and ground connection.
The 6th capacitor C 6 and the 7th capacitor C 7 are all in parallel with the 7th resistance R 7.
Adopt a kind of like this segmented light modulation chip as the light modulation unit of circuit, thereby can come to voltage or the current signal of the corresponding different brightness of luminescent device output according to user's operation.Adopt controllable silicon light modulation different from prior art, a kind of like this light adjusting circuit can be realized sectional dimming, thereby has avoided because current continuity changes the stroboscopic phenomenon causing, and has greatly improved user's use impression.
Further, as shown in Figure 1, light adjusting circuit can also comprise:
Concrete, as shown in Figure 2, feedback detecting unit 14 can comprise: output sampling feedback module 141 and detection module 142.
Wherein, as shown in Figure 3, output sampling feedback module 141 can also comprise the 8th resistance R 8 and the 9th resistance R 9.
One end of the 8th resistance R 8 connects second utmost point of transistor Q, and the other end of the 8th resistance R 8 connects the first end of the 3rd inductance L 3.The 9th resistance R 9 is in parallel with the 8th resistance R 8.
The positive pole of the second diode D2 connects the convertible tip of the 3rd inductance L 3, and the negative pole of the second diode D2 connects the tenth resistance R 10.The other end of the tenth resistance R 10 connects one end of the 5th capacitor C 5.One end of the 11 resistance R 11 connects the convertible tip of the 3rd inductance L 3, and the other end of the 11 resistance R 11 connects light modulation chip 122.
Concrete, in the utility model embodiment, light modulation chip specifically can adopt the various segmented light modulation chips that comprise two-period form light modulation chip, three section type light regulating chip or non-pole light regulating chip etc.The two-period form light modulation chip of take is example, and its structure can be as shown in Figure 3, and this chip comprises respectively eight pins by upper left to upper right, and wherein, the 1st pin connects one end of the 3rd resistance R 3, for controlling, whether carries out light modulation; The 2nd pin connects capacitor C 4, can play the effect of stablizing chip operation; The 3rd pin is earth terminal; The 4th pin contact resistance R11, for receiving detection electric current; The 5th pin is connected with capacitor C 5 and resistance R 10 respectively, and VDD passes through this pin to chip power supply; The 6th pin is connected with the grid of transistor Q by resistance R 6, for the signal of output control transistor Q switching; The 7th pin contact resistance R8, for receiving the sampling feedback signal of output; The 8th pin is connected with first utmost point of transistor Q by resistance R 5, for starting transistor Q.Adopt a kind of like this light modulation chip, can come to voltage or the current signal of the corresponding different brightness of luminescent device output according to user's operation, adopt controllable silicon light modulation different from prior art, the light adjusting circuit with a kind of like this light modulation chip can be realized sectional dimming, thereby has avoided changing because of current continuity the stroboscopic phenomenon causing.
The utility model embodiment also provides a kind of Dimmable lighting equipment, comprising: light adjusting circuit and luminescent device, wherein, light adjusting circuit can comprise as above arbitrary described light adjusting circuit.
The concrete structure of light adjusting circuit has been done detailed description in the aforementioned embodiment, so locate to repeat no more.
The Dimmable lighting equipment that the utility model embodiment provides, comprises light adjusting circuit, adopts sectional dimming unit, thereby can come to voltage or the current signal of the corresponding different brightness of luminescent device output according to user's operation.Adopt controllable silicon light modulation different from prior art, a kind of like this light adjusting circuit can be realized sectional dimming, thereby has avoided because current continuity changes the stroboscopic phenomenon causing, and has greatly improved user's use impression.
Further, luminescent device can comprise LED.Concrete, luminescent device can be single LED, can be also LED lamp bar, the utility model does not limit this.In existing various lighting apparatus, LED spot is widely used as new generation of green energy-conserving light source.Existing Dimmable LED spot mainly adopts and partly moulds half constructed of aluminium, be that fluorescent tube partly adopts plastics, the plug and the fin that are positioned at lamp tube ends adopt aluminium to make, a kind of like this LED spot of structure is in the process of using, plug place is due to the charged high temperature that produces, and this not only can affect the quality of fluorescent tube and user's use has been brought to great potential safety hazard.In addition, dimming function need to be realized by the design of controllable silicon and potentiometer, and the structure of controllable silicon and potentiometer is conventionally larger, need to additionally be produced on outside LED spot, and this has had a strong impact on the attractive in appearance of product and has used.For above problem, the utility model embodiment has proposed a kind of Dimmable lighting equipment.
Concrete, as shown in Figure 4, Dimmable lighting equipment can also comprise:
The heat radiating metal 43 that is arranged at fluorescent tube 41 inside, luminescent device 44 is arranged at the surface of heat radiating metal 43.
Wherein, light adjusting circuit can be arranged at the inside of plug 42.
Concrete, heat radiating metal 43 can select aluminium etc. to have the metal material of high-termal conductivity, and fluorescent tube 41 can adopt ambroin to make with plug 42, and the utility model does not limit this.
Concrete, in Fig. 4, luminescent device 44 is preferably LED lamp bar.Certainly, can be also single LED or other forms, the utility model does not limit this.
So, Dimmable lighting equipment, by adopting overall plastic tubing, has reached good insulation effect, has solved the low problem of existing lighting apparatus security performance.Further, by adopting a kind of like this dimmer circuit design, can directly circuit design be made in to the inside of lighting apparatus, significantly improve the attractive in appearance and practicality of product.In addition, a kind of like this Dimmable lighting equipment can be controlled the light modulation of lighting apparatus by switch on wall, very convenient, has solved existing lighting apparatus and by controllable silicon and potentiometer, has carried out the problem of light modulation complicated operation.
The Dimmable lighting equipment that the utility model embodiment provides is realized sectional dimming function by a kind of sectional dimming unit, by changing different constant current chips, can realize two sections, three sections and non-pole light regulating, without stroboscopic, having solved existing lighting apparatus cannot sectional dimming and have a problem of stroboscopic.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (10)
1. a light adjusting circuit, is characterized in that, comprising: input unit, sectional dimming unit and output unit;
Described input unit, connects respectively power supply and described sectional dimming unit, for to described sectional dimming unit input voltage or current signal;
Described sectional dimming unit, also connects described output unit, for voltage or the current signal to the corresponding different brightness of described output unit output according to user's operation;
Described output unit, for exporting voltage or the current signal of the different brightness of the correspondence receiving to luminescent device, for driving described luminescent device luminous.
2. light adjusting circuit according to claim 1, is characterized in that, described input unit comprises: electromagnetic compatibility module and rectification filtering module;
Described electromagnetic compatibility module comprises the first inductance, the second inductance and the first resistance;
The first end of described the first inductance connects described power supply, and the second end of described the first inductance connects described rectification filtering module; The second end of described the second inductance connects described sectional dimming unit; Described the first resistance and described the second inductance in parallel;
Described rectification filtering module comprises rectifier bridge, the first electric capacity and the second electric capacity;
Described rectifier bridge connects respectively the second end of described the first inductance and the first end of described the second inductance; One end of described the first electric capacity connects the first end of described the second inductance, and the other end of described the first electric capacity connects described rectifier bridge; One end of described the second electric capacity connects the second end of described the second inductance, and the other end of described the second electric capacity connects described rectifier bridge.
3. light adjusting circuit according to claim 1, is characterized in that, described sectional dimming unit comprises: start module, light modulation chip and switch drive module;
Described startup module comprises the second resistance, the 3rd resistance, the 4th resistance and the 3rd electric capacity;
One end of described the second resistance connects described input unit, and the other end of described the second resistance connects described the 3rd resistance; The other end of described the 3rd resistance connects respectively described the 4th resistance and described light modulation chip; The other end ground connection of described the 4th resistance; Described the 3rd electric capacity is in parallel with described the 4th resistance;
Described light modulation chip also, by the 4th capacity earth, connects described input unit by the 5th resistance, by the 5th electric capacity, connects driving power;
Described switch drive module comprises the 6th resistance, transistor and the first diode;
One end of described the 6th resistance connects described light modulation chip, and the other end of described the 6th resistance connects described transistorized grid; Described transistorized first utmost point connects described input unit, and described transistorized second utmost point connects respectively the negative pole of described light modulation chip and described the first diode; The plus earth of described the first diode.
4. light adjusting circuit according to claim 3, is characterized in that, described light modulation chip adopts and comprises: two-period form light modulation chip, three section type light regulating chip or non-pole light regulating chip.
5. light adjusting circuit according to claim 3, is characterized in that, described output unit comprises:
The 3rd inductance, the first end of described the 3rd inductance connects described sectional dimming unit, and the second end of described the 3rd inductance connects luminescent device;
The 7th resistance, one end of described the 7th resistance connects the second end of described the 3rd inductance, and the other end of described the 7th resistance connects respectively described luminescent device and ground connection;
The 6th electric capacity and the 7th electric capacity are all in parallel with described the 7th resistance.
6. light adjusting circuit according to claim 5, is characterized in that, described light adjusting circuit also comprises:
Feedback detecting unit, described feedback detecting unit is connected with described output unit with described sectional dimming unit respectively, so that described sectional dimming unit is according to the feedback signal regulation output signal of described output unit.
7. light adjusting circuit according to claim 6, is characterized in that, described feedback detecting unit comprises: output sampling feedback module and detection module;
Described output sampling feedback module comprises the 8th resistance and the 9th resistance;
One end of described the 8th resistance connects described transistorized second utmost point, and the other end of described the 8th resistance connects the first end of described the 3rd inductance; Described the 9th resistance is in parallel with described the 8th resistance;
Described detection module comprises the second diode, the tenth resistance and the 11 resistance;
The positive pole of described the second diode connects the convertible tip of described the 3rd inductance, and the negative pole of described the second diode connects described the tenth resistance; The other end of described the tenth resistance connects one end of described the 5th electric capacity; One end of described the 11 resistance connects the convertible tip of described the 3rd inductance, and the other end of described the 11 resistance connects described light modulation chip.
8. a Dimmable lighting equipment, comprising: light adjusting circuit and luminescent device, it is characterized in that, and described light adjusting circuit comprises the light adjusting circuit as described in as arbitrary in claim 1-7.
9. Dimmable lighting equipment according to claim 8, is characterized in that, described luminescent device comprises Light-Emitting Diode.
10. Dimmable lighting equipment according to claim 8 or claim 9, is characterized in that, described Dimmable lighting equipment also comprises:
Fluorescent tube;
Be positioned at the plug of described lamp tube ends;
Be arranged at the heat radiating metal of described fluorescent tube inside;
Described luminescent device is arranged at the surface of described heat radiating metal;
Described light adjusting circuit is arranged at the inside of described plug;
Described fluorescent tube and described plug all adopt insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500101.6U CN203446057U (en) | 2013-08-15 | 2013-08-15 | Light adjusting circuit and lighting device with adjustable light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500101.6U CN203446057U (en) | 2013-08-15 | 2013-08-15 | Light adjusting circuit and lighting device with adjustable light |
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| Publication Number | Publication Date |
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| CN203446057U true CN203446057U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320500101.6U Expired - Lifetime CN203446057U (en) | 2013-08-15 | 2013-08-15 | Light adjusting circuit and lighting device with adjustable light |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415116A (en) * | 2013-08-15 | 2013-11-27 | 京东方科技集团股份有限公司 | Dimming circuit and dimmable lighting device |
| WO2015196609A1 (en) * | 2014-06-26 | 2015-12-30 | 京东方科技集团股份有限公司 | Sectional-type dimming circuit and dimmable lighting device |
-
2013
- 2013-08-15 CN CN201320500101.6U patent/CN203446057U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415116A (en) * | 2013-08-15 | 2013-11-27 | 京东方科技集团股份有限公司 | Dimming circuit and dimmable lighting device |
| WO2015196609A1 (en) * | 2014-06-26 | 2015-12-30 | 京东方科技集团股份有限公司 | Sectional-type dimming circuit and dimmable lighting device |
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