LED light source capable of improving spectral continuity
By arranging multiple light-emitting chips in the LED light source and mixing phosphors of specific wavelengths in the phosphor layer, the problem of poor spectral continuity was solved, achieving a spectral effect of high color temperature, low blue light, and high color rendering index.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-03-20
AI Technical Summary
Existing LED light sources suffer from poor spectral continuity.
Multiple short-wavelength blue, long-wavelength blue, and red light-emitting chips are arranged on a substrate, and green and red phosphors are mixed in a phosphor layer. The peak wavelength of the green phosphor in the phosphor layer is 535nm to 540nm, and the peak wavelength of the red phosphor is 650nm to 655nm. The components in the phosphor layer are mixed in a certain proportion, and the phosphor layer covers the chip and cooperates with the surrounding dam to form a stable whole.
It improves spectral continuity, emits light that is closer to the solar spectrum, has a higher color rendering index, and features high color temperature, low blue light, and high color fidelity.
Smart Images
Figure CN224022186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model discloses a LED light source's technical field, specifically, it relates to the LED light source of improving spectral continuity. BACKGROUND
[0002] LED light source has the advantages such as small volume, long life, high efficiency, has become the mainstream in the illumination field.LED light source includes the substrate, and the substrate has the light-emitting area, is equipped with a plurality of light-emitting chips on the light-emitting area, and the light-emitting area is filled with fluorescent glue layer, and the light of light-emitting chip is emitted and transmits through fluorescent glue layer, and the light is irradiated outward after the excitation of fluorescent powder in fluorescent glue layer, reaches the set illumination requirement.
[0003] In the prior art, the light emitted by the light-emitting chip excites the fluorescent powder in the fluorescent glue layer during passing through the fluorescent glue layer, so that the light after passing through the fluorescent glue layer irradiates to reach the set requirement, but the current LED light source has the defect of poor spectral continuity. UTILITY MODEL CONTENTS
[0004] The utility model discloses a LED light source of improving spectral continuity, aims at solving the problem of poor spectral continuity of LED light source in the prior art.
[0005] The utility model discloses a LED light source of improving spectral continuity, aims at solving the problem of poor spectral continuity of LED light source in the prior art.
[0006] Further, the peak wavelength of the green fluorescent powder is 535nm-540nm.
[0007] Further, the peak wavelength of the red fluorescent powder is 650nm-655nm.
[0008] Further, the fluorescent glue layer includes silica gel, and the green fluorescent powder and red fluorescent powder are mixed in the silica gel, and the ratio of the silica gel, green fluorescent powder and red fluorescent powder is 1:0.45:0.073 according to the mass ratio.
[0009] Further, the number ratio of the short-wave blue light-emitting chip and long-wave blue light-emitting chip is 1:1.
[0010] Further, a plurality of short-wave blue light-emitting chips and a plurality of long-wave blue light-emitting chips are alternately and spacedly arranged.
[0011] Further, the plurality of red light emitting chips are arranged in a dispersed manner between the short-wave blue light emitting chips and the long-wave blue light emitting chips.
[0012] Further, a quantity ratio of the short-wave blue light emitting chips, the long-wave blue light emitting chips and the red light emitting chips is 10:10:6.
[0013] Further, the top of the substrate is provided with a ring-shaped dam arranged in a ring shape, and the dam forms the light emitting area.
[0014] Further, the dam has an inner ring sidewall facing the light emitting area, and the inner ring sidewall is arranged along the circumference of the light emitting area; a plurality of step rings are arranged on the inner ring sidewall, and the step rings are sequentially and spacedly arranged along the height direction of the inner ring sidewall and arranged along the circumference of the inner ring sidewall; the outer periphery of the fluorescent glue layer is in contact with the inner ring sidewall, and covers the plurality of step rings.
[0015] Compared with the prior art, the LED light source for improving spectral continuity has the advantages that the light emitted by the plurality of short-wave blue light emitting chips, the plurality of long-wave blue light emitting chips and the plurality of red light emitting chips excites green fluorescent powder and red fluorescent powder respectively in the process of penetrating the fluorescent glue layer, so that the spectral continuity of the emitted light is high, the LED light source has the advantages of high color temperature, low blue light and high color restoration degree, and the light emitted by the LED light source is closer to the sunlight spectrum and has a higher color rendering index. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a front view of the LED light source for improving spectral continuity provided by the utility model;
[0017] Figure 2 is a front view of the LED light source for improving spectral continuity provided by the utility model. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0019] The implementation of the utility model is described in detail below in combination with specific examples.
[0020] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0021] Referring to Figure 1-2 The preferred embodiment provided by the utility model is shown in the drawings.
[0022] The LED light source for improving spectral continuity comprises a substrate 100, the substrate 100 has a light-emitting area, the light-emitting area is provided with a plurality of short-wave blue light-emitting chips 200, a plurality of long-wave blue light-emitting chips 201 and a plurality of red light-emitting chips 202; the light-emitting area is filled with a fluorescent glue layer 300, the fluorescent glue layer 300 covers the plurality of short-wave blue light-emitting chips 200, the plurality of long-wave blue light-emitting chips 201 and the plurality of red light-emitting chips 202; the fluorescent glue layer 300 is mixed with green fluorescent powder and red fluorescent powder.
[0023] The light emitted by the plurality of short-wave blue light-emitting chips 200, the plurality of long-wave blue light-emitting chips 201 and the plurality of red light-emitting chips 202 is excited to green fluorescent powder and red fluorescent powder respectively in the process of penetrating the fluorescent glue layer 300, so that the spectral continuity of the emitted light is high, the LED light source has the advantages of high color temperature, low blue light and high color reproduction degree, and the light emitted by the LED light source is closer to the sunlight spectrum and has a higher color rendering index.
[0024] In the embodiment, the peak wavelength of the green fluorescent powder is 535nm-540nm, and the peak wavelength of the red fluorescent powder is 650nm-655nm.
[0025] In the embodiment, the fluorescent glue layer 300 comprises silica gel, the green fluorescent powder and the red fluorescent powder are mixed in the silica gel, and the ratio of the silica gel, the green fluorescent powder and the red fluorescent powder is 1:0.45:0.073 according to the mass ratio.
[0026] In actual manufacturing, the green fluorescent powder and the red fluorescent powder are mixed in the silica gel and are stirred and mixed, so that the green fluorescent powder and the red fluorescent powder are uniformly mixed in the silica gel.
[0027] The quantity ratio of the short-wave blue light emitting chip 200 to the long-wave blue light emitting chip 201 is 1:1, so that the light emitting quantity of the short-wave blue light emitting chip 200 and the long-wave blue light emitting chip 201 is similar.
[0028] In the embodiment, the short-wave blue light emitting chip 200 and the long-wave blue light emitting chip 201 are alternately and spacedly arranged, so that the light emitted between the short-wave blue light emitting chip 200 and the long-wave blue light emitting chip 201 is more uniform.
[0029] In the embodiment, the red light emitting chip 202 is dispersedly arranged between the short-wave blue light emitting chip 200 and the long-wave blue light emitting chip 201, so that the mixing between the short-wave blue light emitting chip 200, the long-wave blue light emitting chip 201 and the red light emitting chip 202 is more uniform.
[0030] In the embodiment, the quantity ratio of the short-wave blue light emitting chip 200, the long-wave blue light emitting chip 201 and the red light emitting chip 202 is 10:10:6.
[0031] In the embodiment, the top of the substrate 100 is provided with the dam 101 arranged in a ring shape, and the dam 101 forms the light emitting area, so that the fluorescent glue layer 300 is filled in the light emitting area. Alternatively, the top of the substrate 100 is concave downward to form a concave area, and the concave area forms the light emitting area.
[0032] In the embodiment, the dam 101 has an inner ring side wall facing the light emitting area, and the inner ring side wall is arranged along the circumference of the light emitting area; a plurality of step rings 102 are arranged on the inner ring side wall, and the plurality of step rings 102 are sequentially and spacedly arranged along the height direction of the inner ring side wall, and the plurality of step rings 102 are arranged along the circumference of the inner ring side wall; the outer periphery of the fluorescent glue layer 300 abuts against the inner ring side wall and covers the plurality of step rings 102.
[0033] In this way, after the fluorescent glue layer 300 is filled in the light emitting area, the outer periphery of the fluorescent glue layer 300 abuts against the plurality of step rings 102, and the fluorescent glue layer 300 and the substrate 100 form a stable whole; secondly, the fluorescent glue layer 300 can be arranged in an arch shape, and the arch height can be large, so as to play a role of light collection for the light passing through the fluorescent glue layer 300.
[0034] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An LED light source with improved spectral continuity, characterized in that, The device includes a substrate having a light-emitting area, wherein the light-emitting area is provided with a plurality of short-wavelength blue light-emitting chips, a plurality of long-wavelength blue light-emitting chips, and a plurality of red light-emitting chips; the light-emitting area is filled with a fluorescent adhesive layer, which covers the plurality of short-wavelength blue light-emitting chips, the plurality of long-wavelength blue light-emitting chips, and the plurality of red light-emitting chips; the fluorescent adhesive layer contains a mixture of green phosphor and red phosphor. The peak wavelength of the green phosphor is 535nm~540nm; The peak wavelength of the red phosphor is 650nm~655nm; The ratio of the number of short-wavelength blue light-emitting chips, long-wavelength blue light-emitting chips, and red light-emitting chips is 10:10:6; The top of the substrate is provided with a ring-shaped dam, which encloses and forms the light-emitting area; The dam has an inner ring sidewall facing the light-emitting area, which is arranged around the circumference of the light-emitting area. The inner ring sidewall is provided with a plurality of stepped rings, which are arranged sequentially at intervals along the height direction of the inner ring sidewall. The stepped rings are arranged around the circumference of the inner ring sidewall. The outer periphery of the fluorescent adhesive layer abuts against the inner ring sidewall and covers the plurality of stepped rings.
2. The LED light source with improved spectral continuity as described in claim 1, characterized in that, The ratio of the number of short-wavelength blue light-emitting chips to the number of long-wavelength blue light-emitting chips is 1:
1.
3. The LED light source for improving spectral continuity as described in any one of claims 1 to 2, characterized in that, Multiple short-wavelength blue light-emitting chips and multiple long-wavelength blue light-emitting chips are arranged alternately at intervals.
4. The LED light source with improved spectral continuity as described in claim 3, characterized in that, Multiple red light-emitting chips are arranged in a dispersed manner between the short-wavelength blue light-emitting chips and the long-wavelength blue light-emitting chips.