CN202261957U - Light-emitting diode (LED) lighting device - Google Patents
Light-emitting diode (LED) lighting device Download PDFInfo
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- CN202261957U CN202261957U CN2011203451476U CN201120345147U CN202261957U CN 202261957 U CN202261957 U CN 202261957U CN 2011203451476 U CN2011203451476 U CN 2011203451476U CN 201120345147 U CN201120345147 U CN 201120345147U CN 202261957 U CN202261957 U CN 202261957U
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Abstract
The utility model discloses a light-emitting diode (LED) lighting device, and aims to realize the adjustment of brightness and color by adjusting the output light power of a red, green and blue light source module by adoption of the conventional mode of adjusting the duty ratio of the driving current or voltage of the red, green and blue light source module. On the basis that the conventional LED lighting device adopts a three-base-color light source module, the LED lighting device is provided with a group of amber light source modules or warm white light source modules, and the output light power of the LED lighting device is adjusted by adjusting the duty ratio of the driving current or voltage of the LED lighting device so as to adjust the lighting color temperature of the LED lighting device. Therefore, the brightness, the color and the color temperature of the LED lighting device can be adjusted at the same time to achieve the effects of both scene lighting and functional lighting, and the LED lighting device has the characteristics of high color rendering property, high light flux and low cost.
Description
Technical field
The utility model belongs to lighting technical field, more specifically, relates to a kind of LED lighting device.
Background technology
The LED lighting device owing to have long, advantages such as energy consumption is low, energy-conserving and environment-protective of life-span, just is being widely used in fields such as commerce, industry, road, advertising lamp box as a kind of new light sources of high benefit.
Along with the extensive use of LED lighting device, people are also increasingly high to the requirement of LED lighting device, formed adjusting, the multiple regulative mode of color adjustment from single brightness regulation to colour temperature.For ease of regulating, the color LED lighting device great majority of degree of lightening, toning temperature and toning adopt PWM (Pulse Width Modulation, pulse width modulation) mode.
Traditional colour temperature adjustable LED lighting device; Its colour temperature and adjustable brightness; Can not regulate color, be mainly used in functional illumination, generally adopt the driver of two passages to drive high colour temperature, low color temperature light sources module respectively; Regulate the duty ratio of output voltage or electric current, realize the adjusting of colour temperature and brightness.
Traditional color tunable LED lighting device; Its color and adjustable brightness; Can not regulate colour temperature, be mainly used in the illumination of lighting engineering and sight, it adopts the driver of three passages to drive redness, green and blue-light source module respectively; Regulate the duty ratio of output voltage or electric current, realize the adjusting of color and brightness.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of brightness, colour temperature and all adjustable LED lighting device of three lighting parameters of color are provided.
For realizing above-mentioned purpose, the utility model LED lighting device comprises:
Red (Red), green (Green), blue (Blue) light source module;
One AC-DC power module is connected with the civil power AC network, is used for converting alternating current into direct current;
One LED driver module is connected with the direct current of AC-DC power module output, and the AC-DC power module provides DC power supply for the LED driver module, and the LED driver module is used for lighting of driving light source module and extinguishes.
One control module; The redness that its output duty cycle is adjustable, green, blue three groups of pulse-width signals are given the LED driver module; Regulate the LED driver module respectively and export to the drive current of redness, green, blue-light source module or the duty ratio of voltage, thus the color of adjusting LED lighting device;
It is characterized in that; Also comprise: amber (Amber) light source module or warm white (Warm White) light source module; Control module exports the amber of one group of EDM Generator of Adjustable Duty Ratio or the warm white pulse-width signal is given the LED driver module; Regulate the LED driver module and export to amber (Amber) light source module or warm white (Warm White) drive current of light source module or the duty ratio of voltage, thereby regulate the colour temperature of LED lighting device.
The utility model purpose is achieved in that
In the utility model, the mode of the drive current of, blue-light source module red, green through traditional adjusting or the duty ratio of voltage is regulated the Output optical power of redness, green, blue-light source module, thereby realizes the adjusting of brightness and color.Adopt at traditional LED lighting device on the basis of three primary light source module; The utility model increases by one group of amber light source module or warm white light source module; Duty through regulating its drive current or voltage is recently regulated its Output optical power, thereby regulates the colour temperature of LED lighting device.Like this, regulate when the LED lighting device of the utility model has been realized brightness, color and three lighting parameters of colour temperature, both can satisfy the sight illumination, can satisfy functional illumination again, have high-color rendering, high light flux, characteristics cheaply.
Description of drawings
Fig. 1 is a kind of embodiment schematic diagram of the utility model LED lighting device;
Fig. 2 is the another kind of embodiment schematic diagram of the utility model LED lighting device;
Fig. 3 is pulse-width signal one sequential chart that time multiplexing signal output interface shown in Figure 1 is exported;
Fig. 4 is another sequential chart of pulse-width signal that time multiplexing signal output interface shown in Figure 1 is exported.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is described, so that those skilled in the art understands the utility model better.What need point out especially is that in the following description, when perhaps the detailed description of known function and design can desalinate the main contents of the utility model, these were described in here and will be left in the basket.
If adopt traditional P WM (Pulse Width Modulation, pulse width modulation), can there be the problem of power peak stack in the LED lighting device of the utility model.For avoiding the power overload; The power supply changeover device of LED lighting device, promptly the power of power module all is that gross power with whole light source modules is configured, but the actual maximum average power of LED lighting device has only about 1/4th of power module power; Can cause the power waste like this; Simultaneously, cause also that power volume is big, weight is heavier, the defective that cost is higher relatively.
In the present embodiment; Control module adopts the time division multiplexing control module; The redness of four groups of EDM Generator of Adjustable Duty Ratio of its output, green, blueness and cycle amber or the warm white pulse-width signal are identical; And have only one to be effective drive level at most at synchronization, drive corresponding light source module and light.Like this, the utility model LED lighting device is through the time division multiplexing control module; Redness, green, blueness and amber or warm white pulse-width signal are cut apart in time, made them constantly, have only one to be effective drive level at most at any; LED driver module outputting drive voltage or electric current; It is luminous to drive corresponding light source module, the AC-DC power module is distributed to different light source modules in different time sections successively use, and lights corresponding light source module.Prevented the conductings simultaneously of four light source modules, the power overload that causes the power peak stack to bring, thereby in the present embodiment AC-DC power module power configuration just can be reduced to the employing prior art the AC-DC power module 1/4th.Reducing of AC-DC power module power means that its volume and weight all reduces, and saved the volume and the cost of LED lighting device.
Fig. 1 is a kind of embodiment schematic diagram of the utility model LED lighting device.
In the present embodiment, as shown in Figure 1, the utility model LED lighting device comprises: AC-DC power module 1, LED driver module 2, time division multiplexing control module 3, light source module 4.Adopt the time division multiplexing scheme, use constant current drive mode, drive the light source module of RGB+WW compound mode.
AC-DC power module 1 meets live wire end L, the zero line side N of utility grid, and as Alternating Current Power Supply, output is direct current, wherein V
DCBe the DC power supply anode, GND is the DC power supply negative terminal.DC power supply links to each other with time division multiplexing control module 3 with LED driver module 2, is they power supplies.
In the present embodiment, LED driver module 2 comprises a LED constant current driving unit 201 and four switching tube K1, K2, K3, K4.LED constant current driving unit 201 is a constant-current source with short-circuit protection.Four switching tube K1, K2, K3, K4 connect with red, green, blueness and warm white light source module D1, D2, D3, D4 respectively, are connected to the output of LED constant current driving unit 201; The control end of four switching tube K1, K2, K3, K4 meets redness, green, blueness and warm white pulse-width signal PWM1, PWM2, PWM3, PWM4 respectively; When switching tube is effective drive level at the pulse-width signal of correspondence, light corresponding light source module.In the present embodiment, high level is effective drive level.
In the present embodiment, four switching tube K1, K2, K3, K4 are the power-type switching device, can be N type metal-oxide-semiconductors, or NPN type BJT pipe.In the present embodiment; Adopt anode connected mode altogether; The positive output end LED+ of LED constant current driving unit 201 links to each other with the positive pole of four light source modules; The negative output terminal LED-of LED constant current driving unit 201 is connected with source electrode or the emitter of four switching tube K1, K2, K3, K4, and drain electrode or the collector electrode of four switching tube K1, K2, K3, K4 link to each other with the negative pole of four light source modules respectively again.The grid of switching tube or base stage link to each other with corresponding pulse-width signal as control end.When pulse-width signal was high level, the grid of switching tube or base signal were high level, the switching tube conducting; Corresponding light source module is lighted, and when pulse-width signal was low level at that time, the grid of switching tube or base signal were low level; Switching tube turn-offs, and corresponding light source module extinguishes.
Redness, green, blueness and warm white light source module D1, D2, D3, D4 form light source module 4.
In the present embodiment, communications interface unit 301, signal processing unit 302 and time multiplexing signal output unit 303 are arranged in the time division multiplexing control module.Time multiplexing signal output unit 303 has four digital signal interfaces; Export the control end that four groups of pulse-width signal PWM1, PWM2, PWM3, PWM4 give four switching tube K1, K2, K3, K4 respectively, i.e. the base stage of the grid of switching tube N type metal-oxide-semiconductor or NPN type BJT pipe.When a certain road light source module control signal is high level, be attached thereto the switching tube conducting that connects, it is luminous that switching tube drives corresponding light source module.
Through communication interface 301 directly is set the time that redness, green, blueness and warm white are lighted separately in one-period; Signal processing unit 302 is lighted the time according to these four; Control time multiplexing signal output unit 303 outputs four groups of cycles are identical and have only one to be pulse-width signal PWM1, PWM2, PWM3, the PWM4 of significant level at most at synchronization; Control conducting and the turn-off time of four switching tube K1, K2, K3, K4 respectively, in order to the redness, green of control light source module group unit 4, blue lighting and the fall time with warm white light source module D1, D2, D3, D4.Regulate lighting and the fall time of four light source modules, just can regulate the colour mixture ratio of four kinds of light source modules, just can realize brightness regulation, color adjustment, colour temperature adjusting.
Fig. 2 is the another kind of embodiment schematic diagram of the utility model LED lighting device.
In the present embodiment, as shown in Figure 2, the utility model LED lighting device comprises: AC-DC power module 1, LED driver module 2, time division multiplexing control module 3, light source module 4.Adopt the time division multiplexing scheme, use the constant voltage driving mode, drive the light source module of RGBA compound mode.
AC-DC power module 1 meets live wire end L, the zero line side N of utility grid, and as Alternating Current Power Supply, output is direct current, wherein V
DCBe the DC power supply anode, GND is the DC power supply negative terminal.DC power supply links to each other with light source module 4 with time division multiplexing control module 3, is they power supplies.
In the present embodiment, LED driver module 2 comprises four switching tube K1, K2, K3, K4.Four switching tube K1, K2, K3, K4 connect with red, green, blueness and amber light source module D1, D2, D3, D4 respectively; The control end of four switching tube K1, K2, K3, K4 connects redness, green, blueness and amber pulse-width signal respectively, when switching tube is effective drive level at the pulse-width signal of correspondence, lights corresponding light source module.In the present embodiment, high level is effective drive level.
In the present embodiment, four switching tube K1, K2, K3, K4 are the power-type switching device, can be N type metal-oxide-semiconductors, or NPN type BJT pipe.In the present embodiment, adopt anode connected mode altogether, AC-DC power module 1 positive output end V
DCLink to each other with the positive pole of each light source module; AC-DC power module 1 negative output terminal GND is connected with source electrode or the emitter of four switching tube K1, K2, K3, K4, and drain electrode or the collector electrode of four switching tube K1, K2, K3, K4 link to each other with the negative pole of four light source modules respectively again.The grid of switching tube or base stage link to each other with corresponding pulse-width signal as control end.When pulse-width signal was high level, the grid of switching tube or base signal were high level, the switching tube conducting; Corresponding light source module is lighted, and when pulse-width signal was low level at that time, the grid of switching tube or base signal were low level; Switching tube turn-offs, and corresponding light source module extinguishes.
Redness, green, blueness and amber light source module D1, D2, D3, D4 form light source module 4.
In the present embodiment, communications interface unit 301, signal processing unit 302 and time multiplexing signal output unit 303 are arranged in the time division multiplexing control module.Time multiplexing signal output unit 303 has four digital signal interfaces; Export the control end that four groups of pulse-width signal PWM1, PWM2, PWM3, PWM4 give four switching tube K1, K2, K3, K4 respectively, i.e. the base stage of the grid of switching tube N type metal-oxide-semiconductor or NPN type BJT pipe.When a certain road light source module control signal is high level, be attached thereto the switching tube conducting that connects, it is luminous that switching tube drives corresponding light source module.
Through communication interface 301 redness, green, blueness and amber time of in one-period, lighting separately are set directly; Signal processing unit 302 is lighted the time according to these four; Control time multiplexing signal output unit 303 outputs four groups of cycles are identical and have only one to be pulse-width signal PWM1, PWM2, PWM3, the PWM4 of significant level at most at synchronization; Control conducting and the turn-off time of four switching tube K1, K2, K3, K4 respectively, in order to the redness, green of control light source module group unit 4, blue lighting and the fall time with amber light source module D1, D2, D3, D4.Regulate lighting and the fall time of four light source modules, just can regulate the colour mixture ratio of four kinds of light source modules, just can realize brightness regulation, color adjustment, colour temperature adjusting.
Fig. 3 is pulse-width signal one sequential chart that time multiplexing signal output interface shown in Figure 1 is exported.
In one-period T, first time period t 1, pulse-width signal PWM1 is a high level, other three signals are low level; Second time period t 2, pulse-width signal PWM2 is a high level, other three signals are low level; The 3rd time period t 3, pulse-width signal PWM3 is a high level, other three signals are low level; The 4th time period t 4, pulse-width signal PWM4 is a high level, other three signals are low level.T1, t2, t3, four sections time sums of t4 are T, are fixed time periods.The time length of this clock cycle T, time period t 1, time period t 2, time period t 3, time period t 4 receives the control of signal processing unit 302.In any time period of one-period T; Have only one among signal PWM1, PWM2, PWM3, the PWM4 at most and be in high level; Other three signals are in low level, like this, and at any time; Have only a switching tube conducting at most, light source module group unit has only a light source module to light at most for 4 li.
Fig. 4 is another sequential chart of pulse-width signal that time multiplexing signal output interface shown in Figure 1 is exported.
In Fig. 4, added Dead Time t0.The adding of Dead Time t0 can be avoided because the time delay of switching tube conducting and shutoff causes the problem of a plurality of switching tubes conducting simultaneously effectively.In any time period of one-period T; Have only one among signal PWM1, PWM2, PWM3, the PWM4 at most and be in high level; Other three signals are in low level, like this, and at any time; Have only a switching tube conducting at most, thereby the light source module has only a light source module group unit to light for 4 li at most.
The time division multiplexing control mode has avoided a plurality of light source modules to light simultaneously, causes the problem of power stack.The allocating power of AC-DC power module is that 1/4th, four light source modules of traditional approach only need a LED driver element, and driver element quantity is also to be 1/4th of traditional approach, has practiced thrift the cost of power supply changeover device widely, has reduced volume.Simultaneously, adopt red, green, blue and amber or warm white light source module scheme, realized brightness regulation, color adjustment, colour temperature adjusting, both satisfied the sight illumination, satisfied functional illumination again.
The described light source module of the utility model control signal pwm signal adopts positive logic; With high level is effective drive level; Drive red, green, blue and amber or warm white light source module is luminous; The utility model also can the employing negative logic, or the mixed logic mode of mixing, and realizes the control that the power output peak value is complementary.Likewise, also can adopt P type metal-oxide-semiconductor or positive-negative-positive BJT pipe as switching tube.
Although above the illustrative embodiment of the utility model is described; So that the technical staff in present technique field understands the utility model; But should be clear; The utility model is not limited to the scope of embodiment, to those skilled in the art, as long as various variations appended claim limit and the spirit and scope of the utility model of confirming in; These variations are conspicuous, and all innovation and creation that utilize the utility model design are all at the row of protection.
Claims (5)
1. LED lighting device comprises:
Red, green, blue-light source module;
One AC-DC power module is connected with the civil power AC network, is used for converting alternating current into direct current;
One LED driver module is connected with the direct current of AC-DC power module output, and the AC-DC power module provides DC power supply for the LED driver module, and the LED driver module is used for lighting of driving light source module and extinguishes;
One control module; The redness that its output duty cycle is adjustable, green, blue three groups of pulse-width signals are given the LED driver module; Regulate the LED driver module respectively and export to the drive current of redness, green, blue-light source module or the duty ratio of voltage, thus the lighting colour of regulating the LED lighting device;
It is characterized in that; Also comprise: amber light source module or warm white light source module; Control module exports the amber of one group of EDM Generator of Adjustable Duty Ratio or the warm white pulse-width signal is given the LED driver module; Regulate the LED driver module and export to amber light source module or the drive current of warm white light source module or the duty ratio of voltage, thereby regulate the illumination colour temperature of LED lighting device.
2. LED lighting device according to claim 1; It is characterized in that; Described control module adopts the time division multiplexing control module; The redness of four groups of EDM Generator of Adjustable Duty Ratio of its output, green, blueness and cycle amber or the warm white pulse-width signal are identical, and have only one to be effective drive level at most at synchronization, drive corresponding light source module and light.
3. LED lighting device according to claim 1; It is characterized in that; Described LED driver module comprises a LED constant current driving unit and four switching tubes; The LED constant current driving unit is a constant-current source with short-circuit protection, and four switching tubes are connected with red, green, blue and amber or warm white light source module respectively, are connected to the output of LED constant current driving unit; Four control end of switching tube connect redness, green, blueness and amber or warm white pulse-width signal respectively, and when switching tube was effective drive level at the pulse-width signal of correspondence, corresponding light source module was lighted.
4. LED lighting device according to claim 3; It is characterized in that; LED constant current driving unit, four switching tubes and redness, green, blueness and amber or warm white light source module adopt anode connected mode altogether; The positive output end of LED constant current driving unit links to each other with the positive pole of each light source module, and the negative output terminal of LED constant current driving unit is connected with an end of four switching tubes, and the other end of four switching tubes links to each other with the negative pole of each light source module respectively again.
5. LED lighting device according to claim 4 is characterized in that, described four switching tubes are N type metal-oxide-semiconductor or NPN type BJT pipe; The base stage of the grid of metal-oxide-semiconductor or BJT pipe links to each other with corresponding pulse-width signal as control end; The collector electrode of the drain electrode of metal-oxide-semiconductor or BJT pipe links to each other with the positive output end of LED constant current driving unit, and the emitter-base bandgap grading of the source electrode of metal-oxide-semiconductor or BJT pipe links to each other with the negative output terminal of LED constant current driving unit;
When pulse-width signal is high level; The base signal of the grid of metal-oxide-semiconductor or BJT pipe is a high level, metal-oxide-semiconductor or the conducting of BJT pipe, and corresponding light source module is lighted; When pulse-width signal is low level at that time; The base signal of the grid of metal-oxide-semiconductor or BJT pipe is a low level, and metal-oxide-semiconductor or BJT pipe turn-off, and corresponding light source module extinguishes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203451476U CN202261957U (en) | 2011-09-15 | 2011-09-15 | Light-emitting diode (LED) lighting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203451476U CN202261957U (en) | 2011-09-15 | 2011-09-15 | Light-emitting diode (LED) lighting device |
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| CN202261957U true CN202261957U (en) | 2012-05-30 |
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| CN2011203451476U Expired - Fee Related CN202261957U (en) | 2011-09-15 | 2011-09-15 | Light-emitting diode (LED) lighting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316648A (en) * | 2011-09-15 | 2012-01-11 | 四川新力光源有限公司 | Light-emitting diode (LED) illuminating device |
| CN102740560A (en) * | 2012-06-01 | 2012-10-17 | 浙江中怿光电有限公司 | LED (Light Emitting Diode) lamp adjusting color temperature by adopting (PWM Pulse-Width Modulation) controller |
| CN103874310A (en) * | 2014-04-10 | 2014-06-18 | 浙江省能源与核技术应用研究院 | Method for improving LED visual illuminating effect and lowering heating of LED lamp |
| CN104066237A (en) * | 2014-05-09 | 2014-09-24 | 浙江凯耀智能照明科技有限公司 | LED driving circuit and driving method |
| CN108541105A (en) * | 2018-04-25 | 2018-09-14 | 深圳臻迪信息技术有限公司 | LED drive system and method |
| CN109856894A (en) * | 2019-04-03 | 2019-06-07 | 深圳市莱宝影视科技有限公司 | The aobvious LED movies-making lamp of height and its color temperature adjusting method |
| CN114187882A (en) * | 2021-11-24 | 2022-03-15 | 当趣网络科技(杭州)有限公司 | System and method for adjusting brightness of display screen of projector |
-
2011
- 2011-09-15 CN CN2011203451476U patent/CN202261957U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316648A (en) * | 2011-09-15 | 2012-01-11 | 四川新力光源有限公司 | Light-emitting diode (LED) illuminating device |
| CN102316648B (en) * | 2011-09-15 | 2014-08-13 | 四川新力光源股份有限公司 | Light-emitting diode (LED) illuminating device |
| CN102740560A (en) * | 2012-06-01 | 2012-10-17 | 浙江中怿光电有限公司 | LED (Light Emitting Diode) lamp adjusting color temperature by adopting (PWM Pulse-Width Modulation) controller |
| CN103874310A (en) * | 2014-04-10 | 2014-06-18 | 浙江省能源与核技术应用研究院 | Method for improving LED visual illuminating effect and lowering heating of LED lamp |
| CN104066237A (en) * | 2014-05-09 | 2014-09-24 | 浙江凯耀智能照明科技有限公司 | LED driving circuit and driving method |
| CN108541105A (en) * | 2018-04-25 | 2018-09-14 | 深圳臻迪信息技术有限公司 | LED drive system and method |
| CN109856894A (en) * | 2019-04-03 | 2019-06-07 | 深圳市莱宝影视科技有限公司 | The aobvious LED movies-making lamp of height and its color temperature adjusting method |
| CN114187882A (en) * | 2021-11-24 | 2022-03-15 | 当趣网络科技(杭州)有限公司 | System and method for adjusting brightness of display screen of projector |
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Address after: The new 611731 Chengdu Road, Sichuan province high tech Zone No. 2 Patentee after: Sichuan Sunfor Light Co., Ltd. Address before: The new 611731 Chengdu Road, Sichuan province high tech Zone No. 2 Patentee before: Sichuan Sunfor Lighting Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160915 |