CN209169143U

CN209169143U - A kind of imitative solar spectrum LED light source

Info

Publication number: CN209169143U
Application number: CN201821329048.7U
Authority: CN
Inventors: 谢锡龙
Original assignee: Guangzhou Ju Hong Photoelectric Co Ltd
Current assignee: Guangdong Juhong Optoelectronics Co ltd
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2019-07-26
Anticipated expiration: 2028-08-17

Abstract

The utility model discloses a kind of imitative solar spectrum LED light sources, are related to LED technology field, including substrate, the LED chip for being packaged in substrate and connecting with electrical property of substrate, for the fluorescent powder of packaging LED chips；LED chip include: 2 optical wavelengths be 445-455nm the first chip, 1 optical wavelength be 360-413nm the second chip, 2 optical wavelengths be 430-440nm third chip, 2 optical wavelengths be 458-465nm fourth chip, 2 optical wavelengths be 469-480nm fifth chip, 1 optical wavelength be 490-500nm the 6th chip, 1 optical wavelength be 417-425nm the 7th chip.It is used cooperatively by said chip combination and fluorescent powder, so that the utility model is covered the wave-length coverage of visible light and part black light in sunlight, that is, have the illumination performance of solar spectrum, also have the biological property of solar spectrum.

Description

A kind of imitative solar spectrum LED light source

Technical field

The utility model relates to LED technology field more particularly to a kind of imitative solar spectrum LED light sources.

Background technique

Solar spectrum is a kind of continuous spectrum of different wave length.It is divided into visible light and black light two parts.Visible light Wavelength is 400~760nm, and seven kinds of colors are divided into after scattering, is put together then as white light.Black light, and it is divided into two kinds: it is located at The outskirt of feux rouges is infrared ray, and wavelength is greater than 760nm, for up to 5300nm；Outskirt positioned at purple light is ultraviolet light, wave Long 290~400nm.Sunlight has obvious biological effect, and synthesis, animal skin can occur under sun light action for plant The vitamin D effect of changing under sun light action；Infrared ray has huge fuel factor, and ultraviolet light has obvious sterilization to make With etc..

It is to feel that the most comfortable is clearest, therefore imitate the sun that human eye observes things under sunlight (as shown in Figure 1) The light that spectroscopic light source issues not only makes people feel comfortable naturally, but also can control the amount of short wavelength's harmful blue light effectively to more Add the health conducive to the mankind, this is of great significance to the development of the following LED Healthy Lighting.And current common LED lighting source Using single band blue chip and yellow fluorescent powder, the spectral region is relatively narrow, and there is colour rendering indexs to be unable to reach natural light effect The practical problem of fruit occurs two very strong emission peaks in spectrum, differs greatly with solar spectrum.Based on this problem, people A variety of fluorescent powders were used later and blue chip is used cooperatively (as shown in Figure 2), under the synergistic effect of fluorescent powder, spectrum model Enclose, the parameters such as colour rendering index are all increased, visually appear to be similar to sunlight, but still have compared with solar spectrum The wave-length coverage of missing, working under the LED light source of this scheme, it is tired to be extremely easy.

Another program, people imitate solar spectrum effect using the LED chip combination of multiple single wavelengths, although the program The light source device for covering a variety of monochromatic light LED in solar spectrum in visible-range, being capable of more true simulated solar The white light of sending still (as shown in Figure 3) does not have continuous spectrum using the solar spectrum that the LED light source of this kind of method is imitated Characteristic, colour rendering are poor.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is that a kind of imitative solar spectrum LED light source, passes through Multiple LED light source components for covering most of visible light and black light in solar spectrum, cooperation fluorescent powder make it have company Continuous property, reaches and light source effect similar in solar spectrum.

The purpose of this utility model adopts the following technical scheme that realization:

A kind of imitative solar spectrum LED light source including substrate, is packaged in the substrate and connect with the electrical property of substrate LED chip, the fluorescent powder for encapsulating the LED chip；The LED chip includes: that 2 optical wavelengths are 445-455nm Third chip that the second chip that first chip, 1 optical wavelength are 360-413nm, 2 optical wavelengths are 430-440nm, 2 Fifth chip that fourth chip that a optical wavelength is 458-465nm, 2 optical wavelengths are 469-480nm, 1 optical wavelength The 7th chip that the 6th chip, 1 optical wavelength for 490-500nm are 417-425nm；11 LED chips are successively gone here and there Connection forms 1 group of LED chip group.

Further, the holding tank for accommodating the LED chip is offered in the substrate.

Further, the installation site of the LED chip in the LED chip group can be exchanged arbitrarily.

Further, the LED chip in the two column LED chip groups of arbitrary neighborhood mutually staggers.

Compared with prior art, the utility model has the beneficial effects that:

By providing a kind of imitative solar spectrum LED light source, including LED light source basic element of character substrate, be packaged in substrate and with The LED chip of electrical property of substrate connection, the fluorescent powder for packaging LED chips；Wherein LED chip includes that 2 optical wavelengths are The second chip that the first chip of 445-455nm, 1 optical wavelength are 360-413nm, 2 optical wavelengths are 430-440nm Third chip, 2 optical wavelengths be 458-465nm fourth chip, 2 optical wavelengths be 469-480nm the 5th core The 7th chip that the 6th chip that piece, 1 optical wavelength are 490-500nm, 1 optical wavelength are 417-425nm.Make this hair Bright imitative solar spectrum LED light source covers in solar spectrum the LED light source component of most of visible light and black light, allows people Body naked eyes can reach under illumination of the invention other than feeling similar under sunlight irradiation, have also achieved similar to sunlight Biological effect, plant can occur synthesis under radiation of the invention, excite Anthocyanin, animal skin is imitative The vitamin D effect of changing under solar spectrum LED light source, there are also obvious bactericidal effects etc. for ultraviolet light.

Further, since the ultraviolet light that wavelength is less than 360nm is contained in sunlight, and this part ultraviolet light can make human body At skin chronic injury, sunburn, wrinkle etc., it but will seriously lead to cutaneum carcinoma.And then only interception retains the second chip of the invention The ultraviolet light of 360-413nm, the ultraviolet light in above-mentioned wavelength then can bring beneficial effect to plant and animal body, amputate The part being harmful to the human body, has imitative solar spectrum LED light source of the invention other than the irradiation performance of solar spectrum, also protects Stay sunlight to the useful part of organism, plant.

Detailed description of the invention

Fig. 1 is the spectrogram of sunlight；

Fig. 2 is the spectrogram of common LED lighting source；

Fig. 3 is prior art single wavelength LED combination light source light spectrogram；

Fig. 4 is that the utility model imitates solar spectrum LED light source structure schematic diagram；

Fig. 5 is that the utility model imitates solar spectrum LED light source illumination light spectrogram；

Fig. 6 is test light source illumination light spectrogram.

In figure: 10, substrate；20, LED chip；11, holding tank.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

As shown in Figure 4, Figure 5, in order to provide the LED light source of a kind of illumination performance for having sunlight and biological property, this Invention provides a kind of imitative solar spectrum LED light source, including substrate 10, the LED for being packaged in substrate 10 and being electrically connected with substrate 10 Chip 20, for the fluorescent powder of packaging LED chips 20.Preferably, substrate 10 use ceramic substrate 10, substrate 10 be equipped with The circuit of external power supply connection after putting upper conductive glue on the substrate 10, places into the bonding of LED chip 20, then welds LED core Circuit is electrically connected in the circuit positive and negative anodes and substrate 10 of piece 20, is activated chip circuit, is then mixed using silica gel with fluorescent powder Stirring is in fluorescent glue, and fluorescent powder then accounts for the 2-30% of fluorescent glue total weight, and fluorescent glue injection substrate 10 is finally encapsulated LED core Piece 20.

Wherein, LED chip 20 includes: the first chip that optical wavelength is 445-455nm, optical wavelength 360-413nm The second chip, optical wavelength be 430-440nm third chip, optical wavelength be 458-465nm fourth chip, light wave Fifth chip that wavelength is 469-480nm, the 6th chip that optical wavelength is 490-500nm, optical wavelength 417-425nm The 7th chip.

First chip corresponding wavelength issues blue light, the second chip corresponding wavelength issues ultraviolet light, third chip corresponding wavelength Issue dark blue coloured light, fourth chip corresponding wavelength issues light blue coloured light, fifth chip corresponding wavelength issues sky blue coloured light, the 6th core Piece corresponding wavelength issues green light, the 7th chip corresponding wavelength issues purple light.

It uses imitative solar spectrum LED light source of the invention and covers most of visible light and black light in solar spectrum LED light source component, cooperate fluorescent powder, allow living human eye can reach under illumination of the invention sunlight irradiation under inspect thing The similar comfort level of object, also more the solar spectrum of sunlight, tradition imitate sunlight to LED sunlight spectrogram of the invention LED light spectrogram lack part is made up, and has also achieved biological effect similar with sunlight, plant is under present invention effect Synthesis can occur:

Feux rouges is the main force of photosynthesis of plant, and under the conditions of certain blue light the photosynthetic effect of plant can reach To best effect, to influence, blooming control；Blue light acts on greatly plant growth initial stage, and plant is helped to establish prosperity Root system, also can excitation light source colour rendering index；Green light has the effect of centainly promoting photosynthesis of plant；Purple light is that plant becomes light The central area of property, can influence the morphogenesis of plant；Animal skin vitamin D under imitative solar spectrum LED light source occurs to turn The effect of changing excites collagen；Ultraviolet light has obvious bactericidal effect etc..

Further, since containing in sunlight, optical wavelength is less than the ultraviolet light of 360nm and optical wavelength is greater than The infrared light of 1100nm, ultraviolet light of the wavelength less than 360nm can cause skin chronic injury, sunburn, wrinkle etc. to human body, seriously It but will lead to cutaneum carcinoma；And infrared light of the wavelength greater than 1100nm then can cause to damage to human body eyesight, carry out band radiation to human body Deng.And the second chip of the invention has then only intercepted the ultraviolet light of 360-413nm, the ultraviolet light in above-mentioned wavelength is then to plant Object and the beneficial light source of animal body, have amputated the infrared light and ultraviolet portion being harmful to the human body, make it is of the invention it is imitative too Solar spectrum LED light source has other than the irradiation performance of solar spectrum, also retains sunlight to the benefit of organism, has amputated pair Organism brings the part of harm.

Specifically, the first chip is 2, the second chip is 1, third chip is 2, fourth chip is 2, the 5th Chip is 2, the 6th chip is 1, the 7th chip is 1；11 LED chips are sequentially connected in series to form 1 group of LED chip Group.The number of chips that LED corresponds to different color light is the optimal effectiveness scheme obtained according to test of many times, those skilled in the art It can not be superimposed according to said chip quantity by simple quantity and ratio is superimposed to obtain the bigger effect of volume, illumination range Identical imitative solar spectrum LED light source.

Be below above scheme is further illustrated, as shown in fig. 6, the first chip is changed to from 21, In the case that second chip 1 is changed to 2, only change the number of 2 chips, there is obvious for the wavelength between 432-460 Missing, also there is emission peak, so that light source is lost continuous spectrum characteristic, deposit compared with solar spectrum in the wavelength of 360-413 In larger difference, intensity size and variation tendency and solar spectrum can not reach and the sun there is larger difference The similar illumination performance of spectrum and biological property；Therefore, said chip quantity scheme is the optimal case through multiple repetition test.

Preferably, the holding tank 11 for accommodating LED chip 20 is offered in substrate 10.

The installation site of LED chip in LED chip group can be exchanged arbitrarily.In two column LED chipsets of arbitrary neighborhood LED chip mutually staggers.Certainly, multiple LED chips 20 may be alternatively located at arbitrarily to arrange in holding tank 11 and put, however it is not limited on State arranging rule.

It is grouped as optimum embodiment fluorescent powder by following groups:

Launch wavelength is the rouge and powder 10-30% of 620-680

Launch wavelength is the green powder 70-90% of 510-550.

It is used cooperatively by fluorescent powder and multiple LED chips 20, makes the spectrogram of imitative solar spectrum LED light source of the invention It is even more like with sunlight spectrogram, it eliminates and does not have continuous spectrum using the combination imitation solar spectrum of LED chip 20 of single wavelength The problem of characteristic, is resolved the defect of single wave band chip spectrum half-wave width, LED light source using the above scheme, shows Colour index can reach 99.4, colour temperature also adapt to sunlight attainable 1400-20000 range, specifically can be according to reality Demand adjustment, the present invention is widely used, can as commercial lighting, photograph, cloth processed, medical, cultivation etc. is in multiple fields.Relatively It is also higher in traditional LED light source and the LED light source colour rendering index for imitating solar spectrum, it visually appears to not bring discomfort Sense, is conducive to human eye health, and achieved the effect that visible spectrum, and missing problem is also not present.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims

1. a kind of imitative solar spectrum LED light source, including substrate, the LED for being packaged in the substrate and being connect with the electrical property of substrate Chip, the fluorescent powder for encapsulating the LED chip；It is characterized by:

The LED chip include: 2 optical wavelengths be 445-455nm the first chip, 1 optical wavelength be 360-413nm's Fourth chip that third chip that second chip, 2 optical wavelengths are 430-440nm, 2 optical wavelengths are 458-465nm, 2 The 6th chip that fifth chip that a optical wavelength is 469-480nm, 1 optical wavelength are 490-500nm, 1 optical wavelength For the 7th chip of 417-425nm；11 LED chips are sequentially connected in series to form 1 group of LED chip group.

2. imitative solar spectrum LED light source as described in claim 1, it is characterised in that: offer in the substrate for accommodating The holding tank of the LED chip.

3. imitative solar spectrum LED light source as claimed in claim 2, it is characterised in that: the LED in the LED chip group The installation site of chip can be exchanged arbitrarily.

4. imitative solar spectrum LED light source as claimed in claim 3, it is characterised in that: the two column LED chips of arbitrary neighborhood The LED chip in group mutually staggers.