CN211743149U - Color temperature adjustable color enhanced LED lamp - Google Patents
Color temperature adjustable color enhanced LED lamp Download PDFInfo
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- CN211743149U CN211743149U CN201920845689.6U CN201920845689U CN211743149U CN 211743149 U CN211743149 U CN 211743149U CN 201920845689 U CN201920845689 U CN 201920845689U CN 211743149 U CN211743149 U CN 211743149U
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Abstract
The utility model discloses a color temperature adjustable color enhanced LED lamp, it includes high color temperature LED white light lamp pearl and low color temperature LED white light lamp pearl, high color temperature LED white light lamp pearl and low color temperature LED white light lamp pearl adopt mixed phosphor encapsulation by blue light LED chip to form, mixed phosphor is formed by green phosphor and red phosphor mixing, high color temperature LED white light lamp pearl and low color temperature LED white light lamp pearl all have blue emission peak, green emission peak and red emission peak, the respective peak wavelength correspondence of blue emission peak, green emission peak and red emission peak of high color temperature LED white light lamp pearl is less than the respective peak wavelength of blue emission peak, green emission peak and red emission peak of low color temperature LED white light lamp pearl; the advantage is that it enables an enhancement of the color of the illuminated object in a range of different color temperatures.
Description
Technical Field
The utility model relates to a LED lamp especially relates to a LED lamp of colour temperature adjustable color enhancement.
Background
LED lamps have been widely used in various lighting applications, such as general lighting, office lighting, commercial lighting, automotive lighting, plant lighting, and the like. With the rapid development of LED illumination, the light efficiency and color development of LED lamps are greatly developed, the light efficiency is far higher than that of traditional illumination, the development of the light efficiency promotes the improvement of color development requirements, and the development is gradually towards 90 and higher directions from the beginning 80 color development. Further development of LED lighting will tend towards increased light quality and areas with special requirements, such as healthy lighting, increased color rendering quality, etc. In some lighting places, the requirements for showing the colors of objects are different, and in lighting places such as food, vegetables, fruits, jewelry, clothes and the like, the requirements are that light can show the bright and vivid degrees of the objects to be lighted, for example, the colors of fruits and vegetables can be more fresh, the food is more attractive, and the jewelry and the clothes are more bright and colorful.
The color rendering index of the LED lamp on the market is generally 80, compared with natural light, the color of an object is different, especially the color rendering of some LED lamps with different color temperatures, the color rendering of the object to be illuminated is greatly different, for example, the LED lamp with high color temperature (6500K) lacks red color rendering, and the LED lamp with low color temperature (2700K) lacks blue or green color rendering.
Disclosure of Invention
The utility model aims to solve the technical problem that a LED lamp of colour temperature adjustable color enhancement is provided, it is in the colour temperature range of difference, and the white light center can not arouse great skew, and color rendering index can not arouse great change simultaneously.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a color temperature adjustable color enhanced LED lamp is characterized in that: the LED white light lamp bead comprises a high color temperature LED white light lamp bead and a low color temperature LED white light lamp bead, wherein the high color temperature LED white light lamp bead and the low color temperature LED white light lamp bead are formed by packaging a blue LED chip by adopting green and red mixed fluorescent powder, the green and red mixed fluorescent powder is formed by mixing green fluorescent powder and red fluorescent powder, the high color temperature LED white light lamp bead and the low color temperature LED white light lamp bead are respectively provided with a blue emission peak, a green emission peak and a red emission peak, and the respective peak wavelength correspondence of the blue emission peak, the green emission peak and the red emission peak of the high color temperature LED white light lamp bead is smaller than the respective peak wavelength of the blue emission peak, the green emission peak and the red emission peak of the low color temperature LED white light lamp bead.
The high-color-temperature LED white light bead is characterized in that the peak wavelength range of a blue emission peak is 400-450 nm, the peak wavelength range of a green emission peak is 500-530 nm, the peak wavelength range of a red emission peak is 620-629 nm, the luminous intensity of the blue emission peak is greater than that of the green emission peak, the luminous intensity of the green emission peak is greater than that of the red emission peak, and intervals exist among the blue emission peak, the green emission peak and the red emission peak.
The green fluorescent powder in the high-color-temperature LED white light bead selects (Ba, Sr) with the peak wavelength of an emission peak of 525nm2SiO4Eu, Ba having an emission peak with a peak wavelength of 525nm3Si6O12N2Eu, one or two mixed powder; the red fluorescent powder in the high-color-temperature LED white light bead adopts (Ca, Sr) AlSiN with the peak wavelength of an emission peak of 635nm3Eu, emission peak wavelength of 630nm (Ba, Sr, Ca)2Si5N8Eu, K with peak wavelength of emission peak being 631nm2SiF6：Mn4+And the peak wavelength of the emission peak is 632nm K2TiF6：Mn4+CaAlSiN having emission peak with wavelength of 650nm3Eu, or a mixed powder of more of Eu.
The peak wavelength range of a blue emission peak of the low-color-temperature LED white light bead is 451 nm-460 nm, the peak wavelength range of a green emission peak is 531 nm-540 nm, the peak wavelength range of a red emission peak is 630 nm-650 nm, the luminous intensity of the blue emission peak is smaller than that of the green emission peak, the luminous intensity of the green emission peak is smaller than that of the red emission peak, and intervals exist among the blue emission peak, the green emission peak and the red emission peak.
The green fluorescent powder in the low color temperature LED white light bead selects beta-Sialon Eu with the peak wavelength of an emission peak being 535nm or selects beta-Sialon Eu with the peak wavelength of the emission peak being 535nm and (Ba, Sr) with the peak wavelength of the emission peak being 525nm2SiO4Eu or beta-Sialon with emission peak wavelength of 535nm and Ba with emission peak wavelength of 525nm3Si6O12N2Eu mixed powder or mixed powder of beta-Sialon Eu and other green fluorescent powder with emission peak wavelength of 535 nm; the red fluorescent powder in the low color temperature LED white light bead adopts CaAlSiN with the peak wavelength of an emission peak being 650nm3Eu or CaAlSiN with peak wavelength of emission peak of 650nm3Eu and (Ca, Sr) AlSiN having an emission peak wavelength of 635nm3Eu mixed powder or CaAlSiN with emission peak wavelength of 650nm3Eu and other red fluorescent powder.
The color temperature range of the high-color-temperature LED white light bead is 6500-10000K, and the color temperature range of the low-color-temperature LED white light bead is 2500-3000K; the color rendering indexes of the high-color-temperature LED white light bead and the low-color-temperature LED white light bead are both larger than 90, so that the color rendering indexes are not changed greatly when the color temperature is adjusted.
The high-color-temperature LED white light lamp bead and the packaging support of the low-color-temperature LED white light lamp bead are patch LED supports or high-power LED supports or COB supports, and the packaging support of the high-color-temperature LED white light lamp bead is the same as or different from the packaging support of the low-color-temperature LED white light lamp bead.
The LED lamp also comprises a lamp body and an LED light source plate arranged in the lamp body, wherein the high-color-temperature LED white light lamp beads and the low-color-temperature LED white light lamp beads are uniformly arranged on the LED light source plate in a cross distribution mode or are uniformly arranged on the LED light source plate in an alternate arrangement distribution mode. When the lamp is designed specifically, the lamp body can be designed into a lamp body structure with directional light emission such as a bulb lamp, a BR lamp, a PAR lamp, a lamp tube, a spot lamp, a projection lamp, an industrial and mining lamp, a linear lamp and the like.
The LED lamp is characterized in that a plurality of light mixing cavities are formed in the lamp body, at least one high-color-temperature LED white light lamp bead and at least one low-color-temperature LED white light lamp bead are located in one light mixing cavity, and the high-color-temperature LED white light lamp bead and light emitted by the low-color-temperature LED white light lamp bead are mixed in the light mixing cavity. The light mixing cavity can adopt a lens light mixing cavity.
The color temperature of the LED lamp is adjusted by adopting a three-section color temperature adjusting mode or an electrodeless color temperature adjusting mode; the three-section color temperature adjusting mode adjusts three color temperatures, namely a high color temperature, a low color temperature and a middle color temperature; and obtaining any color temperature between the high color temperature and the low color temperature by adopting a stepless dimming and toning driving scheme.
Compared with the prior art, the utility model has the advantages of:
1) under the condition of high-color-temperature illumination, the LED lamp can better display red, and the problem of insufficient red display is solved.
2) Under the condition of low color temperature illumination, the LED lamp can better display blue or green or white, and solves the problem of insufficient display of the green or blue or white.
3) The LED lamp can better display white under the condition of high color temperature or low color temperature illumination, and solves the problem that the white deviates from the center of a color coordinate in different color temperature ranges.
4) The color rendering indexes of the high-color-temperature LED lamp bead and the low-color-temperature LED lamp bead in the LED lamp are both larger than 90, and the change of the color rendering indexes is small when the color temperature is adjusted.
5) The LED lamp adopts a fluorescent powder formula different from the conventional lighting LED lamp bead in packaging and a combined design of the LED chip and mixed fluorescent powder, so that the LED lamp beads with different color temperatures have color display enhancement effects such as red, green, blue and white, and the like, and the combination of the LEDs with different color temperatures is used for dimming and mixing colors, thereby meeting the lighting requirements of different occasions.
Drawings
Fig. 1 is a schematic view of a part of the structure of the LED lamp of the present invention;
FIG. 2 is a schematic distribution diagram of high color temperature LED white light beads and low color temperature LED white light beads on the LED light source plate in the LED lamp of the present invention;
FIG. 3 is a spectrum diagram of the emitted light of the high color temperature LED white light bead (color temperature 6500K) in the LED lamp of the present invention;
fig. 4 is the emission spectrum of the low color temperature LED white light bead (color temperature is 3000K) in the LED lamp of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The utility model provides a color temperature adjustable color enhanced LED lamp, as shown in FIG. 1, which comprises a lamp body 3, an LED light source plate 1 arranged in the lamp body 3, and high color temperature LED white light beads 21 and low color temperature LED white light beads 22 uniformly arranged on the LED light source plate 1 in a staggered arrangement distribution manner, the lamp body 3 is a reflective lamp body, the lamp body 3 is composed of a reflecting cup 31 and a light diffusion plate 32, the LED light source plate 1 is positioned on the narrow opening end of the reflecting cup 31, the reflecting cup 31 covers the high color temperature LED white light beads 21 and the low color temperature LED white light beads 22, the light diffusion plate 32 covers the wide opening end of the reflecting cup 31, all the high color temperature LED white light beads 21 and all the low color temperature LED white light beads 22 are divided into a plurality of groups, each group comprises a equal number of high color temperature LED white light beads 21 and low color temperature LED white light beads 22, FIG. 2 shows a schematic diagram of high color temperature LED white light beads and low color temperature LED white light beads in a staggered arrangement, each group is provided with two high-color-temperature LED white light beads 21 and two low-color-temperature LED white light beads 22, each group is externally covered with a light mixing cavity 33 (if a lens light mixing cavity is adopted), light emitted by the high-color-temperature LED white light beads 21 and the low-color-temperature LED white light beads 22 is mixed in the light mixing cavity 33 to enable the light to be uniform, the mixed light enters the reflecting cup 31 to further reflect and mix the light, and finally the light is further made to be uniform through the light diffusion plate 32 and then emits the light; the high color temperature LED white light lamp bead 21 and the low color temperature LED white light lamp bead 22 are formed by packaging a blue LED chip by adopting green and red mixed fluorescent powder, the green and red mixed fluorescent powder is formed by mixing green fluorescent powder and red fluorescent powder, the high color temperature LED white light lamp bead 21 and the low color temperature LED white light lamp bead 22 are respectively provided with a blue emission peak, a green emission peak and a red emission peak, and the respective peak wavelengths of the blue emission peak, the green emission peak and the red emission peak of the high color temperature LED white light lamp bead 21 are correspondingly smaller than the respective peak wavelengths of the blue emission peak, the green emission peak and the red emission peak of the low color temperature LED white light lamp bead 22.
The utility model discloses in, the peak wavelength range of the blue emission peak of high colour temperature LED white light lamp pearl 21 is 400nm ~ 450nm, the peak wavelength range of the green emission peak is 500nm ~ 530nm, the peak wavelength range of the red emission peak is 620nm ~ 629nm, the luminous intensity of the blue emission peak is greater than the luminous intensity of the green emission peak, the luminous intensity of the green emission peak is greater than the luminous intensity of the red emission peak, there is the interval between blue emission peak, green emission peak, the red emission peak, bluish-green light and yellow light intensity are weaker; the peak wavelength range of the blue emission peak of the low color temperature LED white light bead 22 is 451 nm-460 nm, the peak wavelength range of the green emission peak is 531 nm-540 nm, the peak wavelength range of the red emission peak is 630 nm-650 nm, the luminous intensity of the blue emission peak is smaller than that of the green emission peak, the luminous intensity of the green emission peak is smaller than that of the red emission peak, intervals exist among the blue emission peak, the green emission peak and the red emission peak, and the intensity of blue-green light and yellow light is weaker.
The utility model discloses in, the colour temperature scope of high colour temperature LED white light lamp pearl 21 is 6500 ~ 10000K, and the colour temperature scope of low colour temperature LED white light lamp pearl 22 is 2500 ~ 3000K.
The utility model discloses in, high colour temperature LED white light lamp pearl 21 and low colour temperature LED white light lamp pearl 22's color rendering index all is greater than 90, can guarantee that the color rendering index changes little when adjusting the colour temperature.
The first embodiment is as follows:
in the LED lamp provided in this embodiment, the wavelength of the blue LED chip in the high color temperature LED white light bead 21 is 447nm, and the peak wavelength of the emission peak of the green phosphor in the high color temperature LED white light bead 21 is 525nm (Ba, Sr)2SiO4Eu, red phosphor in high color temperature LED white light lamp bead 21 selects (Ca, Sr) AlSiN with emission peak wavelength of 635nm3Eu and CaAlSiN having a peak wavelength of an emission peak of 650nm3Eu as a mixed powder; the wavelength of the blue LED chip in the low color temperature LED white light bead 22 is 453nm, the green phosphor in the low color temperature LED white light bead 22 adopts beta-Sialon with the peak wavelength of the emission peak of 535nm, Eu and (Ba, Sr) with the peak wavelength of 525nm2SiO4Eu mixed powder, red fluorescent powder in the low color temperature LED white light bead 22 selects CaAlSiN with the peak value wavelength of the emission peak being 650nm3Eu and (Ca, Sr) AlSiN having an emission peak wavelength of 635nm3Eu mixed powder.
FIG. 3 shows an emission spectrum of a high color temperature LED white light bead 21 with a color temperature of 6500K. In FIG. 3, there are three emission regions, which are blue, green and red light regions, respectively, the wavelength range of the blue light region is 410-480 nm, and the peak wavelength is 447 nm; the wavelength range of the green light region is 480-580 nm, and the peak wavelength is 528 nm; the wavelength range of the red light region is 580-750 nm, and the peak wavelength is 628 nm.
Fig. 4 shows a spectrum of the emission light of the low color temperature LED white light bead 22 with a color temperature of 3000K. In FIG. 4, there are three emission regions, which are blue, green and red light regions, respectively, the wavelength range of the blue light region is 430-490 nm, and the peak wavelength is 453 nm; the wavelength range of the green light region is 490-578 nm, and the peak wavelength is 540 nm; the wavelength range of the red light region is 578-750 nm, and the peak wavelength is 630 nm.
In the emission spectrum of 6500K at a high color temperature shown in fig. 3, there are three emission peaks, a blue emission peak, a green emission peak and a red emission peak, the peaks are located at 447nm, 528nm and 628nm, respectively, and the emission intensities of the three peaks are: blue light is greater than the green glow, and the green glow is greater than ruddiness, has the interval between the three peaks, and blue-green light and yellow light intensity are more weak, and traditional 6500K colour temperature lamp pearl, only two emission peak of blue light and yellow light, and ruddiness is weak, and the utility model provides a ruddiness emission has strengthened to strengthened red manifestation, the color rendering index is 90 simultaneously. In the emission spectrum of the low color temperature 3000K shown in fig. 4, there are three emission peaks, blue, green and red, respectively, with peaks at 453nm, 540nm and 630nm, respectively, and three-peak luminous intensities: blue light is less than the green glow, and the green glow is less than ruddiness, has the interval between the three peaks, and blue-green light and yellow light intensity are more weak, and traditional 3000K colour temperature lamp pearl, only two emission peak in blue light and ruddiness, and blue light and green light intensity are weak, and the utility model provides a blue light and green light emission have strengthened to strengthened the manifestation of blue light and green glow, color rendering index is 93 simultaneously.
Example two:
in the LED lamp provided in this embodiment, the wavelength of the blue LED chip in the high color temperature LED white light bead 21 is 447nm, and the peak wavelength of the emission peak of the green phosphor in the high color temperature LED white light bead 21 is 525nm of Ba3Si6O12N2Eu, red phosphor in the high color temperature LED white light bead 21 selects (Ba, Sr, Ca) with peak wavelength of emission peak of 630nm2Si5N8Eu; the wavelength of the blue LED chip in the low color temperature LED white light bead 22 is 453nm, the green phosphor in the low color temperature LED white light bead 22 is beta-Sialon Eu with the peak wavelength of the emission peak of 535nm, and the red phosphor in the low color temperature LED white light bead 22 is CaAlSiN with the peak wavelength of the emission peak of 650nm3:Eu。
Example three:
in the LED lamp provided in this embodiment, the wavelength of the blue LED chip in the high color temperature LED white light bead 21 is 447nm, and the peak wavelength of the emission peak of the green phosphor in the high color temperature LED white light bead 21 is 525nm (Ba, Sr)2SiO4:Eu，K with the peak wavelength of 631nm of an emission peak is selected as red fluorescent powder in the high-color-temperature LED white-light lamp bead 212SiF6：Mn4+K with peak wavelength of 632nm of emission peak2TiF6：Mn4+The mixed powder of (1); the wavelength of the blue LED chip in the low color temperature LED white light bead 22 is 453nm, the green phosphor in the low color temperature LED white light bead 22 adopts beta-Sialon with the peak wavelength of the emission peak of 535nm, Eu and (Ba, Sr) with the peak wavelength of 525nm2SiO4Eu mixed powder, red fluorescent powder in the low color temperature LED white light bead 22 selects CaAlSiN with the peak value wavelength of the emission peak being 650nm3Eu and (Ca, Sr) AlSiN having an emission peak wavelength of 635nm3Eu mixed powder.
Example four:
in the LED lamp provided in this embodiment, the wavelength of the blue LED chip in the high color temperature LED white light bead 21 is 447nm, and the peak wavelength of the emission peak of the green phosphor in the high color temperature LED white light bead 21 is 525nm (Ba, Sr)2SiO4Eu and Ba having an emission peak with a peak wavelength of 525nm3Si6O12N2Eu mixed powder, red fluorescent powder in the high-color-temperature LED white light bead 21 selects (Ba, Sr, Ca) with the peak wavelength of the emission peak of 630nm2Si5N8Eu and K with peak wavelength of emission peak of 632nm2TiF6：Mn4+The mixed powder of (1); the wavelength of the blue LED chip in the low color temperature LED white light bead 22 is 453nm, the green phosphor in the low color temperature LED white light bead 22 is beta-Sialon Eu with the peak wavelength of the emission peak of 535nm, and the red phosphor in the low color temperature LED white light bead 22 is CaAlSiN with the peak wavelength of the emission peak of 650nm3:Eu。
Example five:
in the LED lamp provided in this embodiment, the wavelength of the blue LED chip in the high color temperature LED white light bead 21 is 447nm, and the peak wavelength of the emission peak of the green phosphor in the high color temperature LED white light bead 21 is 525nm of Ba3Si6O12N2Eu, red phosphor in high color temperature LED white light lamp bead 21 selects emission peak wavelength of 635nm of (Ca, Sr) AlSiN3Eu and K with peak wavelength of emission peak of 632nm2TiF6：Mn4+The mixed powder of (1); the wavelength of the blue LED chip in the low color temperature LED white light bead 22 is 453nm, the green phosphor in the low color temperature LED white light bead 22 is beta-Sialon Eu with the peak wavelength of the emission peak of 535nm, and the red phosphor in the low color temperature LED white light bead 22 is CaAlSiN with the peak wavelength of the emission peak of 650nm3:Eu。
In the above embodiments, the packaging supports of the high color temperature LED white light bead 21 and the low color temperature LED white light bead 22 are patch LED supports or high power LED supports or COB supports, the packaging support of the high color temperature LED white light bead 21 is the same as the packaging support of the low color temperature LED white light bead 22, and certainly, the packaging support of the high color temperature LED white light bead 21 and the packaging support of the low color temperature LED white light bead 22 may be different in actual design.
In the above embodiments, the high color temperature LED white light beads 21 and the low color temperature LED white light beads 22 may be alternatively and uniformly disposed on the LED light source board 1 in a cross distribution manner. In the specific design, the lamp body 3 can be designed into a bulb lamp, BR lamp, PAR lamp, lamp tube, spot lamp, projection lamp, industrial and mining lamp, linear lamp and other lamp body 3 structures with directional light emission.
In the above embodiments, the color temperature adjustment of the LED lamp adopts a three-section color temperature adjustment mode or an electrodeless color temperature adjustment mode; three color temperature adjusting modes are used for adjusting three color temperatures, namely a high color temperature, a low color temperature and a middle color temperature; and obtaining any color temperature between the two color temperatures of high color temperature and low color temperature by adopting a stepless dimming and toning driving scheme.
Claims (8)
1. A color temperature adjustable color enhanced LED lamp is characterized in that: including the lamp body, set up in the lamp body in the LED light source board and set up in LED light source board on high colour temperature LED white light lamp pearl and low colour temperature LED white light lamp pearl, the lamp body be reflection of light type lamp body, the lamp body constitute by reflection cup and light diffuser plate, LED light source board be located the narrow mouth of reflection cup serve, just the reflection cup cover in high colour temperature LED white light lamp pearl with low colour temperature LED white light lamp pearl outside, the light diffuser plate cover in the wide mouth of reflection cup serve, high colour temperature LED white light lamp pearl with low colour temperature LED white light lamp pearl adopt green and red mixed phosphor powder to encapsulate by blue light LED chip and form, high colour temperature LED white light lamp pearl with low colour temperature LED white light lamp pearl all have blue emission peak, green emission peak and red emission peak, high colour temperature LED white light lamp pearl blue emission peak, low colour temperature LED white light lamp pearl, The respective peak wavelengths of the green emission peak and the red emission peak are correspondingly smaller than the respective peak wavelengths of the blue emission peak, the green emission peak and the red emission peak of the low-color-temperature LED white light bead.
2. The color temperature tunable color enhanced LED lamp of claim 1, wherein: the high-color-temperature LED white light bead is characterized in that the peak wavelength range of a blue emission peak is 400-450 nm, the peak wavelength range of a green emission peak is 500-530 nm, the peak wavelength range of a red emission peak is 620-629 nm, the luminous intensity of the blue emission peak is greater than that of the green emission peak, the luminous intensity of the green emission peak is greater than that of the red emission peak, and intervals exist among the blue emission peak, the green emission peak and the red emission peak.
3. The color temperature tunable color enhanced LED lamp of claim 2, wherein: the peak wavelength range of a blue emission peak of the low-color-temperature LED white light bead is 451 nm-460 nm, the peak wavelength range of a green emission peak is 531 nm-540 nm, the peak wavelength range of a red emission peak is 630 nm-650 nm, the luminous intensity of the blue emission peak is smaller than that of the green emission peak, the luminous intensity of the green emission peak is smaller than that of the red emission peak, and intervals exist among the blue emission peak, the green emission peak and the red emission peak.
4. A color temperature tunable color enhanced LED lamp according to any one of claims 1 to 3, wherein: the color temperature range of the high-color-temperature LED white light bead is 6500-10000K, and the color temperature range of the low-color-temperature LED white light bead is 2500-3000K; the color rendering indexes of the high-color-temperature LED white light bead and the low-color-temperature LED white light bead are both larger than 90.
5. The color temperature tunable color enhanced LED lamp of claim 1, wherein: the high-color-temperature LED white light lamp bead and the packaging support of the low-color-temperature LED white light lamp bead are patch LED supports or high-power LED supports or COB supports, and the packaging support of the high-color-temperature LED white light lamp bead is the same as or different from the packaging support of the low-color-temperature LED white light lamp bead.
6. The color temperature tunable color enhanced LED lamp of claim 1, wherein: the high-color-temperature LED white light beads and the low-color-temperature LED white light beads are uniformly arranged on the LED light source board in a cross distribution mode or are uniformly arranged on the LED light source board in an alternate arrangement distribution mode.
7. The color temperature tunable color enhanced LED lamp of claim 6, wherein: the LED lamp is characterized in that a plurality of light mixing cavities are formed in the lamp body, at least one high-color-temperature LED white light lamp bead and at least one low-color-temperature LED white light lamp bead are located in one light mixing cavity, and the high-color-temperature LED white light lamp bead and light emitted by the low-color-temperature LED white light lamp bead are mixed in the light mixing cavity.
8. The color temperature tunable color enhanced LED lamp of claim 3, wherein: the color temperature of the LED lamp is adjusted by adopting a three-section color temperature adjusting mode or an electrodeless color temperature adjusting mode; the three-section color temperature adjusting mode adjusts three color temperatures, namely a high color temperature, a low color temperature and a middle color temperature; and obtaining any color temperature between the high color temperature and the low color temperature by adopting a stepless dimming and toning driving scheme.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110265386A (en) * | 2019-06-06 | 2019-09-20 | 浙江阳光美加照明有限公司 | A kind of LED light of the color enhancement of adjustable color |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110265386A (en) * | 2019-06-06 | 2019-09-20 | 浙江阳光美加照明有限公司 | A kind of LED light of the color enhancement of adjustable color |
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