CN104902656A - Driving circuit of LED (light-emitting diode) lamp as well as lighting equipment - Google Patents
Driving circuit of LED (light-emitting diode) lamp as well as lighting equipment Download PDFInfo
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- CN104902656A CN104902656A CN201510378963.XA CN201510378963A CN104902656A CN 104902656 A CN104902656 A CN 104902656A CN 201510378963 A CN201510378963 A CN 201510378963A CN 104902656 A CN104902656 A CN 104902656A
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- led
- drive circuit
- led lamp
- lamp
- lamp drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides a driving circuit of an LED (light-emitting diode) lamp as well as lighting equipment, and relates to the technical field of lighting. A thermistor is linked in series between the LED lamp and a power supply, so that the current flowing through the LED lamp is enabled to be within the rated power range, thereby further realizing the constant current effect of the LED lamp, moreover, a silicon controlled light modulator can also be connected in series to adjust the brightness of the LED lamp; in addition, the whole circuit is simple, easy to realize, small in size, and capable of being wholly embedded into the lamp holder of the LED lamp, so that the overall appearance of the LED lamp is similar to that of an incandescent lamp, the user acceptance is effectively improved, and the popularization and application are facilitated.
Description
Technical field
The present invention relates to lighting technical field, particularly relate to a kind of drive circuit and lighting apparatus of LED.
Background technology
At present, as the LED of the point-source of light of a new generation, the advantages such as electro-optic conversion rate is high, the life-span long owing to having, with low cost and environmental protection, are widely used in daily life and then LED technology are developed fast, and deriving the lighting apparatus of numerous kinds.
Such as, LED silk lamp, its incandescent lamp relatively common in appearance, make the reception degree of user higher, but because the drive circuit correlation technique of LED silk lamp relatively lags behind, cause the volume of drive circuit module larger, therefore in traditional LED silk lamp, all need the joining place between lamp holder and cell-shell that the plastic casing being specifically designed to and placing drive circuit module is set, and then make the outward appearance of whole LED silk just have certain difference, and then the reception degree of user is reduced greatly, and be also not easy to for routine use.
In addition, current in order to make LED silk lamp realize controllable silicon light modulation as incandescent lamp, generally need to arrange dimming switch power circuit block, but because the volume of this power circuit block is larger, it directly cannot put into the lamp holder of LED silk lamp, and then further increases the overall volume of LED silk lamp.
Summary of the invention
In view of the above problems, the application describes a kind of LED lamp drive circuit, can provide electric energy based on AC power to LED, and described drive circuit comprises:
Rectification module, has ac input end and DC output end, and described rectification module is connected with described AC power by described ac input end, with the AC rectification described AC power provided for direct current exports through described DC output end;
Be series at the thermistor of described DC output end and described LED, to utilize LED described in described DC powered luminous; And
Described thermistor is semistor, to make the electric current flowing through described LED in the rated range of described LED.
As a preferred embodiment, above-mentioned LED lamp drive circuit also comprises:
Controllable silicon dimmer, connects with described LED, adjusts the brightness of described LED with the electric current being flowed through described LED by adjustment.
As a preferred embodiment, above-mentioned LED lamp drive circuit also comprises:
Fuse, is connected between described AC power and described rectification module.
As a preferred embodiment, in above-mentioned LED lamp drive circuit:
Described rectification module is bridge rectifier.
As a preferred embodiment, in above-mentioned LED lamp drive circuit:
Described LED is LED silk lamp.
As a preferred embodiment, in above-mentioned LED lamp drive circuit:
Described thermistor is LPTC thermilinear thermistor.
As a preferred embodiment, based on above-mentioned any one LED lamp drive circuit, in this LED lamp drive circuit:
Described LED comprises cell-shell and lamp holder, and described LED lamp drive circuit slips into and is arranged in described lamp holder.
As a preferred embodiment, based on above-mentioned any one LED lamp drive circuit, in this LED lamp drive circuit:
The material of described cell-shell is light-transmitting materials.
As a preferred embodiment, based on above-mentioned any one LED lamp drive circuit, in this LED lamp drive circuit:
The material of described cell-shell is glass.
Present invention also provides a kind of lighting apparatus, comprise the LED lamp drive circuit described in above-mentioned any one.
Technique scheme tool has the following advantages or beneficial effect:
The drive circuit of a kind of LED recorded in the application and lighting apparatus, by by series thermal-sensitive resistance between LED and power supply, to make the electric current flowing through LED in rated operating range, and then realize the effect of LED constant current, and also can serial connection controllable silicon dimmer, to adjust the brightness of LED; In addition, integrated circuit is simple, realizes easily and small volume, can be arranged in the lamp holder of LED by embed wholly, make the outward appearance of the overall appearance of LED and incandescent lamp comparatively approximate, effectively to improve user's acceptance, easy to utilize.
Accompanying drawing explanation
With reference to appended accompanying drawing, to describe embodiments of the invention more fully.But, appended accompanying drawing only for illustration of and elaboration, do not form limitation of the scope of the invention.
Fig. 1 is the modular structure schematic diagram of the drive circuit of LED in the embodiment of the present application;
Fig. 2 is the circuit diagram of the drive circuit of LED in the embodiment of the present application.
Embodiment
The drive circuit of the LED provided in the embodiment of the present invention and lighting apparatus, can be applicable in filament lamp product, mainly by utilizing resistance and LED to connect Limited Current, also by serial connection controllable silicon dimmer and then the function realizing LED light modulation, because above-mentioned resistance of connecting with LED adopts miniaturized positive temperature coefficient resistor, its resistance when realizing temperature and raising increases to reduce the electric current in circuit, thus reduction power, to keep the power of LED in specified scope, namely adopt semistor to limit the electric current flowing through LED and (namely realize constant current effect) in the scope of rated current, and utilize controllable silicon dimmer to realize the dimming function of LED, taken into account the temperature protection function of circuit simultaneously, and it is simple to have such as circuit, volume is little, cost is low, manufacture and process the advantages such as simple.
Below in conjunction with the drawings and specific embodiments, the preparation method to pel array of the present invention and the display device that comprises this pel array is described in detail.
Embodiment one
Fig. 1 is the modular structure schematic diagram of the drive circuit of LED in the embodiment of the present application; As shown in Figure 1, a kind of LED lamp drive circuit in the application, based in the system utilizing AC power to power to LED, can comprise:
AC power, can be daily civilian alternating current (as the alternating current of domestic civilian 220V/50Hz, certainly also can use the alternating current of other specifications, as long as it is in the scope of follow-up rectification module rectification), provides electric energy for LED;
Rectification module, has ac input end and DC output end, and above-mentioned AC power is connected with ac input end, and AC rectification AC power provided to utilize this rectification module for direct current, and exports through DC output end;
Thermistor and LED, be connected on the DC output end of above-mentioned rectification module, to utilize DC powered LED luminous; Simultaneously, this thermistor is that positive temperature is washed one's face and rinsed one's mouth thermistor, its resistance can increase along with the rising of temperature, and then the current value that can effectively limit in above-mentioned DC circuit, make the DC current flow value flowing through LED in the rated range of this LED, namely make LED be operated in the environment of constant current.
Preferably, as shown in Figure 1, above-mentioned LED lamp drive circuit also can comprise controllable silicon dimmer, and this controllable silicon dimmer is connected with above-mentioned thermistor, LED, for the current value being flowed through LED by adjustment, and then the object that realization adjusts LED brightness.
Preferably, above-mentioned LED lamp drive circuit also can comprise fuse (not indicating in figure), and AC power is connected with rectification module by fuse, protects for alternating current circuit.
Preferably, above-mentioned LED can be LED silk lamp, and rectification module can be bridge rectifier, and thermistor can be LPTC thermilinear thermistor.
Preferably, above-mentioned LED comprises the cell-shell and lamp holder that are mutually connected, and the LED lamp drive circuit in the present embodiment embeds and is arranged in lamp holder, with make LED and current incandescent lamp outward appearance comparatively approximate, and then improve the acceptance of user, easy to utilize.
Preferably, the material of above-mentioned cell-shell can be the light-transmitting materials such as such as glass.
Embodiment two
Fig. 2 is the circuit diagram of the drive circuit of LED in the embodiment of the present application, and as shown in Figure 2, on the basis based on above-described embodiment one, the drive circuit of the LED in the embodiment of the present application comprises:
There is the AC power (not indicating in figure) of link L and link N, and link L is connected to the ac input end 1 of bridge rectifier BD by fuse F, link N is then connected to the ac input end 3 of bridge rectifier BD, carries out rectification and export direct current through DC output end 2 and DC output end 4 to make bridge rectifier BD to the alternating current that above-mentioned AC power provides.
Further, above-mentioned drive circuit also comprises and is connected on LED silk lamp between above-mentioned DC output end 2 and DC output end 4 and thermistor RT, namely just profound alternating current is after fuse (i.e. fuse) F and bridge rectifier (i.e. bridge heap) BD rectification, exports partly just profound wave voltage; When partly just profound wave voltage flows through the load circuit comprising LED silk lamp and thermistor RT composition for this, because LED silk lamp is constant voltage partial pressure device, and then make residual voltage all be applied on thermistor RT, namely this thermistor RT is mainly used in dividing potential drop current limliting.
Such as, when input ac voltage raises time, thermistor RT shares voltage will raise, and then the electric current flowing through LED silk lamp and thermistor RT will raise, namely power thermistor RT consumed will increase, temperature on thermistor RT will raise, and because of thermistor RT be semistor, thus temperature raises rear resistance increase, the electric current then flow through on RT1 reduces, compensate the part causing electric current to raise because input voltage raises, thus it is constant to reach the electric current flowing through LED, plays constant current effect.
In addition, above-mentioned drive circuit also can comprise controllable silicon dimmer, a part (in the scope preset) is cut off to make AC wave shape phase angle, namely make the voltage be applied on responsible LED silk lamp and thermistor RT change thereupon, the dividing potential drop of LED silk lamp then immobilizes, because the voltage on temperature-sensitive RT can change thereupon, corresponding electric current also can change thereupon, namely the electric current flowing through LED silk lamp also changes, and only changing with curent change that LED silk lamp sends, so just achieve the light modulation to LED silk lamp.
Preferably, above-mentioned thermistor RT can be LPTC thermilinear thermistor (as WMZ58B series thermistor), and increases because the resistance of LPTC thermilinear thermistor can raise with temperature, and linearly changes, i.e. good linearity.
Present invention also provides a kind of lighting apparatus, drive circuit described in above-described embodiment one and/or embodiment two can be comprised.
In sum, in the above embodiment of the present invention, by by series thermal-sensitive resistance between LED and power supply, to make the electric current flowing through LED in rated operating range, and then realize the effect of LED constant current, and also can serial connection controllable silicon dimmer, to adjust the brightness of LED; In addition, integrated circuit is simple, realizes easily and small volume, can be arranged in the lamp holder of LED by embed wholly, make the outward appearance of the overall appearance of LED and incandescent lamp comparatively approximate, effectively to improve user's acceptance, easy to utilize.
For a person skilled in the art, after reading above-mentioned explanation, various changes and modifications undoubtedly will be apparent.Therefore, appending claims should regard the whole change and correction of containing true intention of the present invention and scope as.In Claims scope, the scope of any and all equivalences and content, all should think and still belong to the intent and scope of the invention.
Claims (10)
1. a LED lamp drive circuit, is characterized in that, provides electric energy based on AC power to LED, and described drive circuit comprises:
Rectification module, has ac input end and DC output end, and described rectification module is connected with described AC power by described ac input end, with the AC rectification described AC power provided for direct current exports through described DC output end;
Be series at the thermistor of described DC output end and described LED, to utilize LED described in described DC powered luminous; And
Described thermistor is semistor, to make the electric current flowing through described LED in the rated range of described LED.
2. LED lamp drive circuit as claimed in claim 1, it is characterized in that, described drive circuit also comprises:
Controllable silicon dimmer, connects with described LED, adjusts the brightness of described LED with the electric current being flowed through described LED by adjustment.
3. LED lamp drive circuit as claimed in claim 1, it is characterized in that, described drive circuit also comprises:
Fuse, is connected between described AC power and described rectification module.
4. LED lamp drive circuit as claimed in claim 1, it is characterized in that, described rectification module is bridge rectifier.
5. LED lamp drive circuit as claimed in claim 1, it is characterized in that, described LED is LED silk lamp.
6. LED lamp drive circuit as claimed in claim 1, it is characterized in that, described thermistor is LPTC thermilinear thermistor.
7. as the LED lamp drive circuit in claim 1 ~ 6 as described in any one, it is characterized in that, described LED comprises cell-shell and lamp holder, and described LED lamp drive circuit embeds and is arranged in described lamp holder.
8. LED lamp drive circuit as claimed in claim 7, it is characterized in that, the material of described cell-shell is light-transmitting materials.
9. LED lamp drive circuit as claimed in claim 8, it is characterized in that, the material of described cell-shell is glass.
10. a lighting apparatus, is characterized in that, comprises the LED lamp drive circuit as described in claim 1 ~ 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378963.XA CN104902656A (en) | 2015-07-01 | 2015-07-01 | Driving circuit of LED (light-emitting diode) lamp as well as lighting equipment |
| PCT/CN2015/088982 WO2017000381A1 (en) | 2015-07-01 | 2015-09-06 | Drive circuit and lighting device of led lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378963.XA CN104902656A (en) | 2015-07-01 | 2015-07-01 | Driving circuit of LED (light-emitting diode) lamp as well as lighting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104902656A true CN104902656A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510378963.XA Pending CN104902656A (en) | 2015-07-01 | 2015-07-01 | Driving circuit of LED (light-emitting diode) lamp as well as lighting equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104902656A (en) |
| WO (1) | WO2017000381A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106555943A (en) * | 2017-01-19 | 2017-04-05 | 上海顿格电子贸易有限公司 | A kind of intelligent LED bulb |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108513391A (en) * | 2018-03-07 | 2018-09-07 | 苏州科思尼克照明科技有限公司 | A kind of method that Crystal lamp illumination dims color-temperature regulating equipment and dims color-temperature regulating |
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| WO2017000381A1 (en) | 2017-01-05 |
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Application publication date: 20150909 |