CN103889090B - Light emitting diode light mixing method and light-emitting device - Google Patents
Light emitting diode light mixing method and light-emitting device Download PDFInfo
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- CN103889090B CN103889090B CN201210553773.3A CN201210553773A CN103889090B CN 103889090 B CN103889090 B CN 103889090B CN 201210553773 A CN201210553773 A CN 201210553773A CN 103889090 B CN103889090 B CN 103889090B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
A kind of light emitting diode light mixing method, comprises the following steps：One substrate is provided, red light-emitting diode, green light LED and blue light-emitting diode are provided with the substrate；An input power is provided, respectively red light-emitting diode, green light LED and blue light-emitting diode is powered；The temperature Δ T1 that red light-emitting diode rises under input power effect is calculated, the temperature Δ T3 that the temperature Δ T2 and blue light-emitting diode that green light LED rises under input power effect rise under input power effect；And adjust the input current of red light-emitting diode, green light LED and blue light-emitting diode respectively according to Δ T1, Δ T2 and Δ T3.Above-mentioned light mixing method withouts waiting for luminous diode temperature rising just reducing its input current, so as to have response timely effect.Present invention also offers a kind of light-emitting device of the above-mentioned light emitting diode light mixing method of application.
Description
Technical field
The present invention relates to a kind of light emitting diode light mixing method and using the luminous of above-mentioned light emitting diode light mixing method
Device.
Background technology
Light emitting diode (Light Emitting Diode, LED) is that one kind can convert the current to particular range of wavelengths
Optoelectronic semiconductor component.Light emitting diode with its brightness it is high, operating voltage is low, small power consumption, easily matched with integrated circuit, drive
Simply, the advantages of long lifespan, so as to lighting field can be widely used in as light source.
In the application process of light emitting diode, generally using red light-emitting diode, green light LED and indigo plant
Light-emitting diode mixed light and form white light.Because the wavelength of the light of light emitting diode can change with the change of temperature, lead to
Often temperature-sensitive sticker is set on a light emitting diode.When luminous diode temperature rises, then the input of light emitting diode is reduced
Electric current.However, the above method is the input current that light emitting diode is just reduced after luminous diode temperature rising, it reacted
Cheng Huiyou postpones.
The content of the invention
In view of this, it is necessary to a kind of response is provided and more timely light emitting diode light mixing method and applies above-mentioned hair
The light-emitting device of optical diode light mixing method.
A kind of light emitting diode light mixing method, comprises the following steps：
One circuit board is provided, red light-emitting diode, green light LED and indigo plant are provided with the circuit board
Light-emitting diode；
One input power, respectively red light-emitting diode, green light LED and the pole of blue light emitting two are provided
Pipe is powered；
The temperature Δ T1 that red light-emitting diode rises under input power effect is calculated, green light LED is in input
The temperature Δ T3 that the lower temperature Δ T2 for rising of power supply effect and blue light-emitting diode rise under input power effect；And
According to Δ T1, Δ T2 and Δ T3 adjusts red light-emitting diode respectively, and green light LED and blue light are sent out
The input current of optical diode.
A kind of light-emitting device, including：
Illuminating module, including circuit board and the red light-emitting diode that is arranged on circuit board, the pole of green luminescence two
Pipe and blue light-emitting diode；
Input power, respectively red light-emitting diode, green light LED and blue light-emitting diode are powered；With
And
Control device, is electrically connected with illuminating module and input power, and the control device calculates the pole of red light-emitting two
The temperature Δ T1 that pipe rises under input power effect, the temperature Δ T2 that green light LED rises under input power effect
And the temperature Δ T3 that blue light-emitting diode rises under input power effect, then according to Δ T1, Δ T2 and Δ T3 points
The input current of red light-emitting diode, green light LED and blue light-emitting diode is not adjusted.
In the above-mentioned LED light mixing methods and light-emitting device, it is adjusted according to the size that luminous diode temperature rises
Input current.I.e., when the input power increases, the heat that light emitting diode is sent increases so as to cause its temperature to rise.This
When, it is corresponding to reduce to its input current so that its mixed light is balanced.Above-mentioned light mixing method withouts waiting for light-emitting diodes
Pipe temperature rises ability and its input current is adjusted, so as to have response timely effect.
Brief description of the drawings
Fig. 1 is the structural representation of the light-emitting device that the embodiment of the present invention is provided.
Fig. 2 is the structural representation of the illuminating module in Fig. 1.
Fig. 3 is the schematic flow sheet of the light emitting diode light mixing method that the embodiment of the present invention is provided.
Main element symbol description
| Light-emitting device | 10 |
| Illuminating module | 11 |
| Substrate | 111 |
| Red light-emitting diode | 112 |
| Green light LED | 113 |
| Blue light-emitting diode | 114 |
| Welding flux layer | 115 |
| Input power | 12 |
| Control device | 13 |
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Referring to diagram, the present invention is further detailed.
Refer to Fig. 1-2, light-emitting device provided in an embodiment of the present invention 10 includes illuminating module 11, input power 12 and
Control device 13.
The illuminating module 11 includes substrate 111 and the red light-emitting diode 112 being arranged on substrate 111, green
Light-emitting diode 113 and blue light-emitting diode 114.The input power 12 is respectively red light-emitting diode 112, green
Light-emitting diode 113 and blue light-emitting diode 114 are powered and it is lighted.
Control device 13 is electrically connected with illuminating module 11 and input power 12.The control device 13 calculates feux rouges hair
The temperature Δ T1 that optical diode 112 rises under the effect of input power 12, green light LED 113 is acted in input power 12
The temperature Δ T3 that the temperature Δ T2 and blue light-emitting diode 114 of lower rising rise under the effect of input power 12.Then root
Red light-emitting diode 112 is adjusted respectively according to temperature rise Δ T1, Δ T2 and Δ T3, and green light LED 113 and blue light are sent out
The input current of optical diode 114.That is, when input power 12 increases the input power of red light-emitting diode 112, feux rouges
The caloric value of light emitting diode 112 will increase so as to cause its temperature to rise.And temperature rising will be to causing red light-emitting two
The emission wavelength of pole pipe 112 changes, so as to change the ratio in illuminating module 11 between feux rouges and green glow and blue light.This
When, the input current of red light-emitting diode 112 can be accordingly reduced so that the scale dimension between feux rouges, green glow and blue light maintains an equal level
Weighing apparatus.Correspondingly, when input power 12 increases the input power of green light LED 113 or blue light-emitting diode 114,
The control device 13 also can accordingly reduce the input current of green light LED 113 or blue light-emitting diode 114 and make
Scale dimension between feux rouges, green glow and blue light maintains an equal level and weighs.
In the present embodiment, the temperature rise Δ T1 of red light-emitting diode 112, the temperature of green light LED 113 are being calculated
During the temperature rise Δ T3 of liter Δ T2 and blue light-emitting diode 114, red light-emitting diode 112 can be first calculated in input power
Heat Q1 produced in the presence of 12, the produced heat Q2 in the presence of input power 12 of green light LED 113
And the produced heat Q3 in the presence of input power 12 of blue light-emitting diode 114, then further according to produced heat
Amount Q1, Q2 and Q3 calculate red light-emitting diode 112 respectively, green light LED 113 and blue light-emitting diode 114
Temperature rise Δ T1, Δ T2 and Δ T3.Wherein, in above-mentioned calculating process, the thermal resistance R of red light-emitting diode 112 is tested firstR,
The thermal resistance R of green light LED 113GAnd the thermal resistance R of blue light-emitting diode 114B.The numerical value R of the thermal resistanceR、RG、RBGeneration
The heat of table 1W to be caused the size that temperature rises.Now, red light-emitting diode 112, green light LED 113 and
Temperature rise the Δ T1, Δ T2 and Δ T3 of blue light-emitting diode 114 are calculated by below equation：
ΔT1 = Q1*RR；ΔT2 = Q2*RG；ΔT3 = Q3*RB。
As needed, in the contact interface of red light-emitting diode 112 and substrate 111, green light LED 113 with
The contact interface of substrate 111 and it is also respectively provided with welding flux layer in the contact interface of blue light-emitting diode 114 and substrate 111
115.Now, red light-emitting diode 112, the temperature rise of green light LED 113 and blue light-emitting diode 114 are being calculated
When Δ T1, Δ T2 and Δ T3, the thermal resistance R of welding flux layer 115 is tested out firstS, then red light-emitting diode 112, green glow
Temperature rise the Δ T1, Δ T2 and Δ T3 of light emitting diode 113 and blue light-emitting diode 114 are calculated by below equation：
ΔT1 = Q1*(RR+RS)；ΔT2 = Q2*(RG+RS)；ΔT3 = Q3*(RB+RS)。
Present invention also offers a kind of light emitting diode light mixing method.Please also refer to Fig. 3, the light emitting diode light mixing
Method is comprised the following steps.
One substrate 111 is provided, red light-emitting diode 112, green light LED is provided with the substrate 111
113 and blue light-emitting diode 114.
One input power 12, respectively red light-emitting diode 112, green light LED 113 and blue light are provided
Light emitting diode 114 is powered.
Calculate the temperature Δ T1 that red light-emitting diode 112 rises under the effect of input power 12, green light LED
113 on the temperature Δ T2 and blue light-emitting diode 114 risen under input power 12 is acted on are under the effect of input power 12
The temperature Δ T3 for rising.
Temperature rise Δ T1, Δ T2 and Δ T3 according to red light-emitting diode 112 adjust red light-emitting diode respectively
112, the input current of green light LED 113 and blue light-emitting diode 114.
In above-mentioned light emitting diode light mixing method, the temperature rise Δ T1 of red light-emitting diode 112, green luminescence are being calculated
During the temperature rise Δ T3 of the temperature rise Δ T2 of diode 113 and blue light-emitting diode 114, red light-emitting diode can be first calculated
112 produced heat Q1 in the presence of input power 12, the institute in the presence of input power 12 of green light LED 113
The heat Q2 and blue light-emitting diode 114 of generation produced in the presence of input power 12 heat Q3, then root again
Red light-emitting diode 112 is calculated respectively according to produced heat Q1, Q2 and Q3, and green light LED 113 and blue light are sent out
Temperature rise the Δ T1, Δ T2 and Δ T3 of optical diode 114.Wherein, in above-mentioned calculating process, red light-emitting diode is tested first
112 thermal resistance RR, the thermal resistance R of green light LED 113GAnd the thermal resistance R of blue light-emitting diode 114B.Now, feux rouges hair
Temperature rise the Δ T1, Δ T2 and Δ T3 of optical diode 112, green light LED 113 and blue light-emitting diode 114 by with
Lower formula is calculated：
ΔT1 = Q1*RR；ΔT2 = Q2*RG；ΔT3 = Q3*RB。
As needed, in the contact interface of red light-emitting diode 112 and substrate 111, green light LED 113 with
The contact interface of substrate 111 and can also be respectively provided with solder flux in the contact interface of blue light-emitting diode 114 and substrate 111
Layer 115.Now, the temperature of red light-emitting diode 112, green light LED 113 and blue light-emitting diode 114 is being calculated
When rising Δ T1, Δ T2 and Δ T3, the thermal resistance R of welding flux layer 115 is tested out firstS, then red light-emitting diode 112, green
Temperature rise the Δ T1, Δ T2 and Δ T3 of light-emitting diode 113 and blue light-emitting diode 114 are calculated by below equation：
ΔT1 = Q1*(RR+RS)；ΔT2 = Q2*(RG+RS)；ΔT3 = Q3*(RB+RS)。
It is understood that for the person of ordinary skill of the art, can be done with technology according to the present invention design
Go out other various corresponding changes and deformation, and all these changes and deformation should all belong to the protection model of the claims in the present invention
Enclose.
Claims (4)
1. a kind of light emitting diode light mixing method, comprises the following steps：
One substrate is provided, red light-emitting diode, green light LED and blue light emitting two are provided with the substrate
Pole pipe；
An input power is provided, respectively red light-emitting diode, green light LED and blue light-emitting diode is supplied
Electricity；
The temperature Δ T1 that red light-emitting diode rises under input power effect is calculated, green light LED is in input power
The temperature Δ T3 that the lower temperature Δ T2 for rising of effect and blue light-emitting diode rise under input power effect is red calculating
The temperature rise Δ T1 of light-emitting diode, the temperature rise Δ T2 of green light LED and the temperature rise Δ T3 of blue light-emitting diode it
When, the heat Q1 produced by red light-emitting diode is calculated first, heat Q2 and indigo plant produced by green light LED
Heat Q3 produced by light-emitting diode, tests the thermal resistance R of red light-emitting diodeR, the thermal resistance R of green light LEDGWith
And the thermal resistance R of blue light-emitting diodeB, red light-emitting diode, the temperature of green light LED and blue light-emitting diode
Δ T1, Δ T2 and Δ T3 is risen to be calculated by below equation：Δ T1=Q1*RR；Δ T2=Q2*RG；Δ T3=Q3*RB；And
According to Δ T1, Δ T2 and Δ T3 adjusts red light-emitting diode, green light LED and blue light emitting two respectively
The input current of pole pipe.
2. light emitting diode light mixing method as claimed in claim 1, it is characterised in that green respectively in red light-emitting diode
Welding flux layer is set between light-emitting diode and blue light-emitting diode and circuit board, the thermal resistance R of the welding flux layer is testedS,
Temperature rise the Δ T1, Δ T2 and Δ T3 of red light-emitting diode, green light LED and blue light-emitting diode are by following
Formula is calculated：
Δ T1=Q1* (RR+RS)；Δ T2=Q2* (RG+RS)；Δ T3=Q3* (RB+RS)。
3. a kind of light-emitting device, including：
Illuminating module, including substrate and the red light-emitting diode that is arranged on substrate, green light LED and indigo plant
Light-emitting diode；
Input power, respectively red light-emitting diode, green light LED and blue light-emitting diode are powered；And
Control device, is electrically connected with illuminating module and input power, and the control device calculates red light-emitting diode and exists
The lower temperature Δ T1 for rising of input power effect, temperature Δ T2 that green light LED rises under input power effect and
The temperature Δ T3 that blue light-emitting diode rises under input power effect, then according to Δ T1, Δ T2 and Δ T3 are adjusted respectively
The input current of whole red light-emitting diode, green light LED and blue light-emitting diode, is calculating red light-emitting two
When the temperature rise Δ T1 of pole pipe, the temperature rise Δ T2 of green light LED and the temperature rise Δ T3 of blue light-emitting diode, first
The heat Q1 produced by red light-emitting diode is calculated, heat Q2 and blue light emitting two produced by green light LED
Heat Q3 produced by pole pipe, tests the thermal resistance R of red light-emitting diodeR, the thermal resistance R of green light LEDGAnd blue light hair
The thermal resistance R of optical diodeB, red light-emitting diode, the temperature rise Δ T1 of green light LED and blue light-emitting diode, Δ
T2 and Δ T3 is calculated by below equation：Δ T1=Q1*RR；Δ T2=Q2*RG；Δ T3=Q3*RB。
4. light-emitting device as claimed in claim 3, it is characterised in that respectively in red light-emitting diode, the pole of green luminescence two
Welding flux layer is set between pipe and blue light-emitting diode and circuit board, the thermal resistance R of the welding flux layer is testedS, red light-emitting two
Temperature rise the Δ T1, Δ T2 and Δ T3 of pole pipe, green light LED and blue light-emitting diode are calculated by below equation：
Δ T1=Q1* (RR+RS)；Δ T2=Q2* (RG+RS)；Δ T3=Q3* (RB+RS)。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210553773.3A CN103889090B (en) | 2012-12-19 | 2012-12-19 | Light emitting diode light mixing method and light-emitting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210553773.3A CN103889090B (en) | 2012-12-19 | 2012-12-19 | Light emitting diode light mixing method and light-emitting device |
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| CN103889090A CN103889090A (en) | 2014-06-25 |
| CN103889090B true CN103889090B (en) | 2017-07-07 |
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| CN104505389A (en) * | 2014-12-24 | 2015-04-08 | 广州市鸿利光电股份有限公司 | LED (Light Emitting Diode) light-mixing method and LED device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7638754B2 (en) * | 2005-10-07 | 2009-12-29 | Sharp Kabushiki Kaisha | Backlight device, display apparatus including backlight device, method for driving backlight device, and method for adjusting backlight device |
| US7888623B2 (en) * | 2008-02-14 | 2011-02-15 | Sony Corporation | Illumination device and display device |
| CN102119580A (en) * | 2006-10-31 | 2011-07-06 | 皇家飞利浦电子股份有限公司 | Light-emitting element light source and temperature management system therefor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7638754B2 (en) * | 2005-10-07 | 2009-12-29 | Sharp Kabushiki Kaisha | Backlight device, display apparatus including backlight device, method for driving backlight device, and method for adjusting backlight device |
| CN102119580A (en) * | 2006-10-31 | 2011-07-06 | 皇家飞利浦电子股份有限公司 | Light-emitting element light source and temperature management system therefor |
| US7888623B2 (en) * | 2008-02-14 | 2011-02-15 | Sony Corporation | Illumination device and display device |
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Effective date of registration: 20170519 Address after: Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
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