CN204387966U - A kind of lighting device and comprise the light fixture of this lighting device - Google Patents
A kind of lighting device and comprise the light fixture of this lighting device Download PDFInfo
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- CN204387966U CN204387966U CN201520014691.0U CN201520014691U CN204387966U CN 204387966 U CN204387966 U CN 204387966U CN 201520014691 U CN201520014691 U CN 201520014691U CN 204387966 U CN204387966 U CN 204387966U
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Abstract
The utility model provides a kind of lighting device, comprises the blue light generating unit of output blue light component, exports the yellow-green light generating unit of yellow-green light composition and the ruddiness generating unit of output red light component; The luminescence peak intensity of described ruddiness generating unit is the 50-80% of the luminescence peak intensity of described blue light generating unit; Described yellow-green light generating unit exports the Wavelength distribution of light between 500nm to 580nm, and within the scope of this, intensity of any one wavelength is all greater than 30% of the luminescence peak intensity of described ruddiness generating unit and is less than the luminescence peak intensity of described ruddiness generating unit.After have employed such design, by blue light ingredient, green-yellow light composition, red color light component are combined specifically photochromic according to a specific ratio.When adopting such lighting apparatus to irradiate object, both can ensure the vividness of illuminated object, not affecting again the Natural color of itself.
Description
Technical field
The utility model relates to a kind of lighting device and comprises the light fixture of this lighting device, particularly a kind of semiconductor illumination device and comprise the light fixture of this lighting device.
Background technology
At present, the illumination of the meat in supermarket fresh district is usually realized by red or pink photochromic straight tube fluorescent lamp or common warm white light light source.Meat Surface color and luster entirety can be made dimer with the fresh meat of common warm white light illumination, the RED sector of meat seems dimer, and white portion is then slightly partially yellow; On the other hand, with the meat of red or pink photochromic light source irradiation, its RED sector is very bright-coloured, and white portion is then also partially red.In brief, warm white makes meat color vividness not enough, and naturalness is general; Pink photochromic, make meat color vividness superfluous, naturalness is short of.
Day by day become today of compatriots' primary concern at food-safety problem, people are also more and more careful to selecting of fresh food.People are when evaluating fresh food quality good or not, and the fresh food too bright-coloured to color and luster is often lost faith in, because worry to play tricks (surface treatment, artificial color etc.), and the fresh food that color and luster is too dim simultaneously also cannot cause people's desire to buy.The fresh lamp of present meat, just in the face of such embarrassment, because it is photochromic special, makes the fresh district of meat always general " red " light, suspicious.
In conjunction with the problems referred to above, need the fresh lamp of a kind of meat, representing fresh meat itself self-colored truly while, its certain vividness can be ensured, namely neither sacrifice its vividness, also do not put undue emphasis on vividness.
Utility model content
The purpose of this utility model is to solve the problem, and provides a kind of vividness that both can ensure shone thing, does not affect again itself self-colored lighting device.
The utility model is for realizing above-mentioned functions, and the technical scheme adopted is to provide a kind of lighting device, comprises the blue light generating unit of output blue light component, exports the yellow-green light generating unit of yellow-green light composition and the ruddiness generating unit of output red light component; The peak luminous wavelength of described blue light generating unit is at more than 440nm, below 460nm; The peak luminous wavelength of described ruddiness generating unit is at more than 600nm, below 620nm, and the luminescence peak intensity of described ruddiness generating unit is the 50-80% of the luminescence peak intensity of described blue light generating unit; Described yellow-green light generating unit exports the Wavelength distribution of light between 500nm to 580nm, and within the scope of this, intensity of any one wavelength is all greater than 30% of the luminescence peak intensity of described ruddiness generating unit and is less than the luminescence peak intensity of described ruddiness generating unit; Launch from the light of described lighting device when not having other light, in CIE1931 chromaticity coordinates, photochromic chromaticity coordinates scope meets following condition: abscissa x ∈ [0.335,0.365], ordinate y ∈ [0.300,0.330].
Preferably, the luminescence peak intensity of described ruddiness generating unit is greater than 53% of the luminescence peak intensity of described blue light generating unit, is preferably greater than 56%, is less than 75% of the luminescence peak intensity of described blue light generating unit, is preferably less than 70%, is preferredly less than 65%.
Preferably, the Wavelength distribution that described yellow-green light generating unit exports all is greater than 40% of the luminescence peak intensity of described ruddiness generating unit in the intensity of any one wavelength of the light of 500nm to 580nm and is less than 95% of the luminescence peak intensity of described ruddiness generating unit.
Preferably, described yellow-green light generating unit is comprised and absorbs the light that sends of semiconductor light-emitting elements and the green-yellow light fluorophor being sent green-yellow light by wavelength convert.
Preferably, described green-yellow light fluorophor is broadband fluorescence body.
Preferably, described green-yellow light fluorophor comprises two or more different fluorophor.
Preferably, described blue light generating unit is for semiconductor light-emitting elements or comprise and absorb the light that sends of semiconductor light-emitting elements and the blue emitting phosphor being sent blue light by wavelength convert.
Preferably, described ruddiness generating unit is semiconductor light-emitting elements.
Preferably, described ruddiness generating unit is comprised and absorbs the light that sends of semiconductor light-emitting elements and the red line emitting phosphors being sent ruddiness by wavelength convert.
Preferably, described red line emitting phosphors is broadband fluorescence body.
The utility model also provides a kind of light fixture, comprises power supply driver, optical element, it is characterized in that described light fixture also comprises lighting device as above.
A kind of lighting apparatus provided by the utility model is by combining specifically photochromic according to a specific ratio by blue light ingredient, green-yellow light composition, red color light component.When adopting such lighting apparatus to irradiate object, both can ensure the vividness of illuminated object, not affecting again the Natural color of itself.
Accompanying drawing explanation
Fig. 1 is the comparison diagram of the preferred spectrum of the utility model and prior art;
Fig. 2 is the photochromic CIE1931 chromaticity coordinates figure of the utility model lighting device;
Fig. 3 is the structural representation of the light fixture of the utility model preferred embodiment;
Fig. 4 is the lighting device relative spectral power distribution figure meeting the utility model embodiment one;
Fig. 5 is the relative spectral power distribution figure of white chip in the lighting device meeting the utility model embodiment two;
Fig. 6 is the relative spectral power distribution figure of red light chips in the lighting device meeting the utility model embodiment two;
Fig. 7 is the relative spectral power distribution figure of the lighting device meeting the utility model embodiment three;
Fig. 8 is the relative spectral power distribution figure of the lighting device meeting the utility model embodiment four;
Fig. 9 is the relative spectral power distribution figure of the lighting device meeting the utility model embodiment five;
Figure 10 is the relative spectral power distribution figure of the lighting device meeting the utility model embodiment six.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, a kind of lighting device that the utility model proposes is described in further detail.
First we do a concise and to the point introduction to project background of the present utility model, the colour rendering evaluation of current all light sources (comprising LED) remains and is provided by colour rendering index CRI, but international lighting association CIE just pointed out CRI as far back as 2007 and is not suitable for evaluating the colour rendering of LED light source, CRI to the colour developing evaluation of LED light source and visual experience inconsistent, the environment higher to color saturation, the gap between CRI numerical value and the visual experience of people is just more obvious.But due to so far still the unified better index of generally acknowledging of neither one come alternative CRI, CRI and be temporarily still widely used.
Although CRI is inaccurate, for general lighting environment, its numerical value still can as color rendering properties of light source reference, but for special screne or special illuminated object, just can not again using CRI as unique criterion.In other words, for special screne, the not single index of illuminating effect can describe, and should adopt the most reliable visual experiment to evaluate.
The utility model for application scenarios be fresh food illumination, this scene is a more special scene.Also general lighting is different to the evaluation of this scene lighting effect, particularly to the color that illuminated object shows.Therefore, we, by cooperating with color engineering center of Zhejiang University, have done careful deep research to the spectrum of the fresh lamp of meat.The system research scheduling to last a year and a half has been carried out to the spectrum of fresh lamp source, whole research process comprises takes turns visual experiment more, Headquarters of the General Staff trial number about 120 people, experiment compares the light source of nearly 44 kinds of different spatial distribution stage by stage, and the several major parameters (correlated colour temperature, colour rendering index, memory colour index, chromaticity coordinates, blackbody radiance curve departure degree) that have studied lighting source are on the impact of fresh colour developing naturality and vividness.Final experimentally result, have found the target optical spectrum of applicable fresh meat illumination, naturality and vividness two dimensions reaches reasonable balance.
Please refer to Fig. 1, in figure, solid line L2 is some preferably spectroscopic datas that we test acquisition, dotted line L1 is the spectrum of existing fresh lamp, its main peak is blue light, be positioned at 450nm, change plan as relative spectral figure, therefore we are classified as longitudinal axis numerical value 1 main peak energy, the energy of other points is expressed as the ratio with main peak energy in the drawings, its red light peak comparatively L2 closer to long wave (about 622nm), peak strength is higher (being about 96% of main peak intensity) also, under the illumination that experiment proof is such, meat more can evoke the appetite of people really, but, most subjects can notice the difference of illuminant color, and the excessive redness that meat produces is doubted.We are by reducing red light peak, and appropriateness lowers the colour developing vividness of object, and obtain solid line L2, such spectrum obviously promotes the colour developing naturality of object, and its vividness and naturality reach balance.We reduce red light peak further simultaneously, and obtain the spectrum of dotted line L3, the preference degree of experimenter to the meat under these spectrum is starkly lower than the spectrum of solid line L2.
In conjunction with the data of above visual experiment, we finally determine a light color range and preferred spectrum corresponding with it, and have developed corresponding lighting apparatus, thus realize reaching optimum to the illuminating effect of fresh meat.
In conjunction with legend, preferred embodiments more of the present utility model are further described now, embodiment is the fresh lamp of meat, the area illuminations such as primary responsibility pork, beef and mutton, its structural representation please refer to Fig. 3, and its main body is by comprising lighting device 101, power supply driver 102, the controller (not shown) of adjustable luminous intensity, heat abstractor 103 and reflection shield 104 etc.Controller can be used for the photochromic and light intensity adjusting lighting device 101, and reflection shield 104 can become other optical elements according to the design replacement of light fixture in other embodiments, as lens, diffused component, photoconduction etc., wherein also can not comprise radiator.Lighting device 101 comprises blue light generating unit, the yellow-green light generating unit of output yellow-green light composition, the ruddiness generating unit of output red light component of output blue light component in the present embodiment.The peak luminous wavelength of described blue light generating unit is at more than 440nm, below 460nm.The peak luminous wavelength of described ruddiness generating unit is at more than 600nm, below 620nm, and the luminescence peak intensity of described ruddiness generating unit is the 50-80% of the luminescence peak intensity of described blue light generating unit, its lower limit preferably 53%, be more preferably 56%, its upper limit preferably 75%, be more preferably 70%, particularly preferred is 65%, adding of ruddiness is vividness in order to increase meat, but the meat that seems is too red, too false we have a definite limitation to the proportioning of red blue light in order to prevent vividness excessively.Described yellow-green light generating unit exports the Wavelength distribution of light between 500nm to 580nm, and intensity of any one wavelength is all greater than 30% of the luminescence peak intensity of described ruddiness generating unit within the scope of this, preferably be greater than 40%, be less than the luminescence peak intensity of described ruddiness generating unit, preferably be less than 95%, be preferredly less than 90%.Adding of green-yellow light is photochromic in order to be in harmonious proportion, it is to make the whole wavelength in this region all have sufficient luminous intensity that intensity for green-yellow light arranges lower limit, shone thing is made to be unlikely to distortion, ensure naturality, the intensity of green-yellow light should not exceed ruddiness, in order to avoid the forfeiture of vividness simultaneously.To launch after the mixing of the light of described blue light generating unit, green-yellow light generating unit, ruddiness generating unit when there is no other light, as shown in Figure 2, in CIE1931 chromaticity coordinates, photochromic chromaticity coordinates scope meets following condition: abscissa x ∈ [0.335,0.365], ordinate y ∈ [0.300,0.330], the a-quadrant namely in Fig. 2.To the photochromic setting restrictive condition after combination, mainly the present embodiment is a fresh lamp of meat, its main function is also to provide illumination, therefore be required for us close to the photochromic of white light, the spectrum of the red blue light said before meeting, the energy proportioning of red-green glow is a lot, and only have photochromic dropping within the scope of the CIE1931 chromaticity coordinates of delimiting above, just can realize the utility model object that the said naturality of the utility model and vividness are taken into account.Can see from the CIE1931 chromaticity coordinates of Fig. 2, a-quadrant is between white light and purple phase powder, and photochromic in this region have a bit micro-red slightly, and naked eyes are almost difficult to discover, its vividness can be increased after irradiating fresh meat, as this region extends to the right again, photochromic will be redder, will seem like this and excessively play up, if and this region extends to upper left, photochromic whiter, the vividness that can seem again is not enough, cannot evoke the desire to purchase of people.
The illuminating part of these different color lights in lighting device 101 can be the fluorescent material that LED chip or the wavelength of light can be carried out is changed, and fluorescent material can select chlorate MClO 3 fluorescent substance, silicate phosphor, nitride phosphor, sulphide phosphor etc.For blue light generating unit, monochromatic LED chip can be adopted, here the monochromatic LED chip of indication refers to by the direct stimulated luminescence of semi-conducting material, without the LED chip of fluorophor, blue light generating unit also can adopt LED chip to coordinate the pattern of fluorophor in addition, namely blue light generating unit is comprised and absorbs semiconductor light-emitting elements (LED chip) light that sends and the blue emitting phosphor being sent blue light by wavelength convert, and semiconductor light-emitting elements here can for sending the monochromatic LED chip of ultraviolet light.Ruddiness generating unit and blue light generating unit similar, it can adopt monochromatic LED chip, but ruddiness generating unit is comprised and absorbs light that semiconductor light-emitting elements sends and the red line emitting phosphors being sent ruddiness by wavelength convert in a preferred scheme.And green-yellow light generating unit is comprised and absorbs the light that sends of semiconductor light-emitting elements and the green-yellow light fluorophor being sent green-yellow light by wavelength convert, as previously mentioned, in order to color is unlikely to distortion, we need the whole wavelength in yellowish green photochromic region to have sufficient luminous intensity, by the spectral intensity wider distribution of the yellow-green light of phosphor excitation, the green-yellow light intensity of the utility model requirement can be met.Green-yellow light generating unit can comprise a kind of phosphor excitation and produce green-yellow light, also two or more fluorophor can be adopted to combine, such as can excite the fluorophor of gold-tinted and the fluorophor of green glow can be excited to combine, even can be combined by the fluorophor of multiple peak wavelength, when being combined by multiple fluorophor, these fluorophor are not limited in components and parts, can be such as the different green-yellow light fluorophor in two white light LEDs, the spectrum produced by them superposes the spectral intensity between the 500-580nm obtaining our needs.The combination of this fluorophor is not limited to green-yellow light generating unit, when blue light generating unit, ruddiness generating unit comprise fluorophor, also can adopt the fluorophor of Multiple components, and these fluorophor can be distributed in different devices.In addition, here green-yellow light fluorophor preferably adopts broadband fluorescence body, broadband fluorescence body is a general in the industry concept, refer to the fluorescent material that exciting light full width at half maximum (FWHM) (FWHM) is wider, this wider for the arrowband fluorescent materials such as yttrium europium oxide (rouge and powder), quantum dot phosphor, its full width at half maximum (FWHM) of broadband fluorescence body in the utility model is preferably greater than 30nm, the preferred 40nm that is greater than, particularly preferredly be greater than 50nm, be especially preferably greater than 80nm.In addition, red line emitting phosphors also can adopt broadband fluorescence body, should be red spectral band and green light band is adjacent, ruddiness generating unit can also have certain energy at green light band after also adopting broadband fluorescence body, also can increase the light intensity of this wave band after superposing with the luminescence of green-yellow light generating unit so to a certain extent, make it the spectrum meeting the utility model needs.It should be noted that, here ruddiness generating unit and green-yellow light generating unit are only to illustrate that the one that the utility model adopts describes, as the transmitted bandwidth of red line emitting phosphors wider must have portion of energy in green-yellow light region, this time, we can be understood as the function that red line emitting phosphors part achieves ruddiness generating unit, partly launch for green-yellow light and contribute, namely green-yellow light generating unit is made up of green-yellow light fluorophor and red line emitting phosphors.For above various combinations, below introduce several preferably embodiments of lighting device 101.
Embodiment one, lighting device 101 is provided with peak wavelength be the blue-light LED chip of 450 ± 10nm as blue light generating unit, the blue light that some blue light generating unit sends can be converted to the red line emitting phosphors of ruddiness as ruddiness generating unit, and the blue light that some blue light generating unit sends can be converted to the green-yellow light fluorophor of green-yellow light as green-yellow light generating unit.Blue-light LED chip is namely as blue light generating unit in the present embodiment, is again the excitation source of reflection to red light portion, green-yellow light generating unit.Fig. 4 is the relative spectral power distribution figure of embodiment one, and the peak luminous wavelength that the blue light energy that blue-light LED chip sends forms first peak is in the drawings positioned at 459nm, and FWHM is about 26nm.The some blue light that blue-light LED chip sends by red line emitting phosphors is converted into the ruddiness of 600-620nm, and form the second peak in the diagram, peak luminous wavelength is positioned at 603nm, and peak strength is about 63% of the first peak strength.The some blue light that blue-light LED chip sends by green-yellow light fluorophor is converted into the green-yellow light of 500-580nm, the relative spectral power in this wave band, and the minimum 500nm of being positioned at place is 44% of the second peak strength, and highest order is 86% of the second peak strength in 580nm place.The chromaticity coordinates of embodiment one is x=0.3564, y=0.3234, the preferred spectra values that Pass Test obtains.In the present embodiment, green-yellow light fluorophor have employed broadband fluorescence body.The employing of broadband fluorescence body, can ensure that the full wavelength region in whole green-yellow light 500-580nm has the sufficient luminous intensity meeting us and require, namely within the scope of this, the intensity of any one wavelength is all greater than 30% of red light-emitting peak strength, from the spectral power distribution of Fig. 2, be exactly have certain thickness in this region, light intensity in the present embodiment in this region is all greater than 44% of red light-emitting peak strength, better compared to 30% effect.Blue-light LED chip and fluorophor are the elements be separated in the present embodiment, remote fluorescence powder material is added by single colored chip, the quantity of single colored chip can be more than one, phosphor material powder also can be multiple, components and parts that also can be packaged together for blue semiconductor light emitting source and phosphor material powder in other preferably embodiment at some, and lighting device 101 can comprise one or more such components and parts.
Embodiment two, lighting device 101 comprises two kinds of LED chip, chip one is white chip, its relative spectral power distribution figure as shown in Figure 5, chip two is excite by fluorescent material the LED chip producing ruddiness, its relative spectral power distribution figure as shown in Figure 6, chip one and chip two can be 1 or several pieces.Blue semiconductor light emitting source is all comprised as blue light generating unit in chip one and chip two.And the ruddiness generating unit of lighting device 101 is made up of the red line emitting phosphors in the red line emitting phosphors in chip one and chip two, because chip two is for sending the LED chip of ruddiness, red line emitting phosphors is wherein that the ruddiness of embodiment sends and plays a major role, therefore the red line emitting phosphors in chip two adopts broadband fluorescence body in this embodiment, its full width at half maximum (FWHM) is greater than 80nm, at some other more in preferred embodiment the full width at half maximum (FWHM) of ruddiness can be greater than 100nm.Green-yellow light fluorophor in chip one i.e. white chip is as the green-yellow light generating unit of lighting device 101.The spectrum that spectrum superposition obtains afterwards and embodiment one is similar of chip one and chip two, as shown in Figure 4.
Embodiment three, be provided with in lighting device 101 peak wavelength be the blue-light LED chip of 450 ± 10nm as blue light generating unit, the blue light that some blue light generating unit sends can be converted to the green-yellow light fluorophor of green-yellow light as green-yellow light generating unit.And ruddiness generating unit comprises and sends peak wavelength and be positioned at the LED chip of the ultraviolet light of 360 ± 40nm scope as excitation source, and the ultraviolet light sent by excitation source is converted into the red line emitting phosphors of the ruddiness of 600-620nm.Fig. 7 is the relative spectral power distribution figure of embodiment three, and the peak luminous wavelength that the blue light energy that blue-light LED chip sends forms first peak is in the drawings positioned at 450nm, and FWHM is about 23nm.The ruddiness that red line emitting phosphors excites, form the second peak in the figure 7, peak luminous wavelength is positioned at 610nm, and peak strength is about 60% of the first peak strength.The some blue light that blue-light LED chip sends by green-yellow light fluorophor is converted into the green-yellow light of 500-580nm, the relative spectral power in this wave band, and the minimum 500nm of being positioned at place is 50% of the second peak strength, and highest order is 87% of the second peak strength in 580nm place.The chromaticity coordinates of embodiment three is x=0.3595, y=0.3298, the preferred spectra values that Pass Test obtains.Blue-light LED chip and green-yellow light fluorophor are the elements be separated in the present embodiment, be single colored chip and remote fluorescence powder material, and UV light emitting source and red light fluorescent powder are encapsulated into a chip, can arrange multiple above components and parts in certain lighting device 101.
Embodiment four, be provided with in lighting device 101 peak wavelength be the blue-light LED chip of 450 ± 10nm as blue light generating unit, the blue light that some blue light generating unit sends can be converted to the red line emitting phosphors of ruddiness as ruddiness generating unit.And green-yellow light generating unit comprises and sends peak wavelength and be positioned at the LED chip of the ultraviolet light of 360 ± 40nm scope as excitation source, and the ultraviolet light sent by excitation source is converted into the green-yellow light fluorophor of green-yellow light.Fig. 8 is the relative spectral power distribution figure of embodiment four, and the peak luminous wavelength that the blue light energy that blue-light LED chip sends forms first peak is in the drawings positioned at 450nm, and FWHM is about 24nm.The ruddiness that red line emitting phosphors excites, form the second peak in fig. 8, peak luminous wavelength is positioned at 600nm, and peak strength is about 60% of the first peak strength.The ultraviolet light that ultraviolet leds chip sends is converted into the green-yellow light of 500-580nm by green-yellow light fluorophor, the relative spectral power in this wave band, and the minimum 500nm of being positioned at place is 48% of the second peak strength, and highest order is 95% of the second peak strength in 580nm place.The chromaticity coordinates of embodiment four is x=0.3547, y=0.3284, the preferred spectra values that Pass Test obtains.Blue-light LED chip and red line emitting phosphors are the elements be separated in the present embodiment, for single colored chip and the optical element adding fluorescent material, and UV light emitting source and green-yellow light fluorescent powder packaging become a chip, in certain lighting device 101, multiple above components and parts can be set.
Embodiment five, in lighting device 101, be provided with peak wavelength is that the blue-light LED chip of 450 ± 10nm is as blue light generating unit.Also be provided with in lighting device 101 in addition and send the LED chip that peak wavelength is positioned at the ultraviolet light of 360 ± 40nm scope, and the ultraviolet light that part ultraviolet leds chip sends can be converted to the red line emitting phosphors of ruddiness, the part ultraviolet light that ultraviolet leds chip can be sent is converted into the green-yellow light fluorophor of green-yellow light.Fig. 9 is the relative spectral power distribution figure of embodiment five, and the peak luminous wavelength that the blue light energy that blue-light LED chip sends forms first peak is in the drawings positioned at 450nm, and FWHM is about 23nm.The ruddiness that red line emitting phosphors excites, form the second peak in fig .9, peak luminous wavelength is positioned at 605nm, and peak strength is about 55% of the first peak strength.The part ultraviolet that ultraviolet leds chip sends by green-yellow light fluorophor is converted into the green-yellow light of 500-580nm, relative spectral power in this wave band, the minimum 500nm of being positioned at place is 55% of the second peak strength, and highest order is 90% of the second peak strength in 580nm place.The chromaticity coordinates of embodiment five is x=0.3491, y=0.3285, the preferred spectra values that Pass Test obtains.Blue light generating unit is a monochromatic blue-light LED chip in the present embodiment, and ruddiness generating unit and green-yellow light generating unit are a potted element, its inside comprises UV light emitting source and green-yellow light fluorescent material, red light fluorescent powder, and at some, in other better embodiment, ruddiness generating unit and green-yellow light generating unit also can be that two LED chip inside are packaged with UV light emitting source and corresponding fluorescent material respectively.
Embodiment six, be provided with in lighting device 101 and send the LED chip that peak wavelength is positioned at the ultraviolet light of 360 ± 40nm scope, the blue emitting phosphor that the ultraviolet light that part ultraviolet leds chip sends can be converted to blue light is also provided with in lighting device 101, and using blue emitting phosphor as blue light generating unit; The ultraviolet light that part ultraviolet leds chip sends can be converted to the red line emitting phosphors of ruddiness, and using red line emitting phosphors as ruddiness generating unit; The part ultraviolet light that ultraviolet leds chip can be sent is converted into the green-yellow light fluorophor of green-yellow light, and using green-yellow light fluorophor as green-yellow light generating unit.Figure 10 is the relative spectral power distribution figure of embodiment six, the ultraviolet light that part ultraviolet leds chip sends is converted to the blue light of wavelength 450 ± 10nm by blue emitting phosphor, the peak luminous wavelength that its energy forms first peak is in the drawings positioned at 450nm, and FWHM is about 53nm.The ruddiness that red line emitting phosphors excites, form the second peak in Fig. 10, peak luminous wavelength is positioned at 608nm, and peak strength is about 80% of the first peak strength.The part ultraviolet that ultraviolet leds chip sends by green-yellow light fluorophor is converted into the green-yellow light of 500-580nm, relative spectral power in this wave band, the minimum 500nm of being positioned at place is 43% of the second peak strength, and highest order is 93% of the second peak strength in 580nm place.The chromaticity coordinates of embodiment six is x=0.3420, y=0.3275, the preferred spectra values that Pass Test obtains.Lighting device 101 comprises one or more ultraviolet leds chips in the present embodiment, and blue light fluorescent powder, green-yellow light fluorescent material, red light fluorescent powder, these fluorescent material can be made remote fluorescence powder material or fluorescent material is mixed optical element and be superimposed upon in LED chip.
To illustrate and describing to the description of the utility model preferred embodiment above, and undesired is the utility model limit or be confined to disclosed concrete form, obviously, many modifications and variations may be made, these modifications and variations may be obvious to those skilled in the art, should be included within the scope of the present utility model that defined by appended claims.
Claims (13)
1. a lighting device, comprises the blue light generating unit of output blue light component, exports the yellow-green light generating unit of yellow-green light composition and the ruddiness generating unit of output red light component; The peak luminous wavelength of described blue light generating unit is at more than 440nm, below 460nm; The peak luminous wavelength of described ruddiness generating unit is at more than 600nm, below 620nm, and the luminescence peak intensity of described ruddiness generating unit is the 50-80% of the luminescence peak intensity of described blue light generating unit; Described yellow-green light generating unit exports the Wavelength distribution of light between 500nm to 580nm, and within the scope of this, intensity of any one wavelength is all greater than 30% of the luminescence peak intensity of described ruddiness generating unit and is less than the luminescence peak intensity of described ruddiness generating unit; Launch from the light of described lighting device when not having other light, in CIE1931 chromaticity coordinates, photochromic chromaticity coordinates scope meets following condition: abscissa x ∈ [0.335,0.365], ordinate y ∈ [0.300,0.330].
2. lighting device according to claim 1, is characterized in that the luminescence peak intensity of described ruddiness generating unit is greater than 53% of the luminescence peak intensity of described blue light generating unit, is less than 75% of the luminescence peak intensity of described blue light generating unit.
3. lighting device according to claim 2, is characterized in that the luminescence peak intensity of described ruddiness generating unit is greater than 56% of the luminescence peak intensity of described blue light generating unit, is less than 70% of the luminescence peak intensity of described blue light generating unit.
4. lighting device according to claim 3, is characterized in that the luminescence peak intensity of described ruddiness generating unit is less than 65% of the luminescence peak intensity of described blue light generating unit.
5. lighting device according to claim 1, is characterized in that the Wavelength distribution that described yellow-green light generating unit exports all is greater than 40% of the luminescence peak intensity of described ruddiness generating unit in the intensity of any one wavelength of the light of 500nm to 580nm and is less than 95% of the luminescence peak intensity of described ruddiness generating unit.
6. the lighting device according to claim 1,2,3,4 or 5, be is characterized in that described yellow-green light generating unit comprises and absorbs the light that sends of semiconductor light-emitting elements and the green-yellow light fluorophor being sent green-yellow light by wavelength convert.
7. lighting device according to claim 6, is characterized in that described green-yellow light fluorophor is broadband fluorescence body.
8. lighting device according to claim 6, is characterized in that described green-yellow light fluorophor comprises two or more different fluorophor.
9. lighting device according to claim 6, is characterized in that described blue light generating unit is for semiconductor light-emitting elements or comprise and absorb the light that sends of semiconductor light-emitting elements and the blue emitting phosphor being sent blue light by wavelength convert.
10. lighting device according to claim 6, is characterized in that described ruddiness generating unit is semiconductor light-emitting elements.
11. lighting devices according to claim 6, be is characterized in that described ruddiness generating unit comprises and absorb the light that sends of semiconductor light-emitting elements and the red line emitting phosphors being sent ruddiness by wavelength convert.
12. lighting devices according to claim 11, is characterized in that described red line emitting phosphors is broadband fluorescence body.
13. 1 kinds of light fixtures, comprise power supply driver, optical element, it is characterized in that described light fixture also comprise as arbitrary in claim 1-12 as described in lighting device.
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| CN201520014691.0U CN204387966U (en) | 2015-01-09 | 2015-01-09 | A kind of lighting device and comprise the light fixture of this lighting device |
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