A COB light source and system for adjusting color coordinates along a black trajectory
By integrating three light-emitting modules with different color temperatures into the COB light source and setting an auxiliary light-emitting area, combined with the power supply circuit and control unit, high-precision color temperature adjustment and wide spectral coverage are achieved, solving the problem of insufficient color temperature adjustment capability of traditional COB light sources and improving the performance of the light source in high-end applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN EVERCORE OPTOELECTRONICS TECH
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
Smart Images
Figure CN224414932U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED lighting technology, and in particular to a COB light source and system that adjusts the color coordinates along a black track. Background Technology
[0002] Traditional COB (Chip on Board) light sources typically use single-color-temperature light-emitting modules, resulting in a limited color temperature range and usually providing only a fixed warm white or cool white light. This type of single-color-temperature light source has several limitations in practical applications:
[0003] Limited color temperature adjustment capability: It is impossible to flexibly adjust the color temperature according to different application scenarios and needs; Insufficient color rendering: Light sources with a single color temperature have defects in color rendering; Narrow spectral coverage: The spectrum of traditional COB light sources is mainly concentrated in a specific wavelength band, and the color temperature adjustment capability is limited.
[0004] To address the limitations of traditional COB light sources, multicolor COB light sources have emerged. By integrating multiple light-emitting modules with different color temperatures, multicolor COB light sources can expand the color temperature range and improve color rendering to some extent. However, existing multicolor COB light sources still have the following problems:
[0005] Insufficient color temperature adjustment precision: Although it can provide multiple color temperatures, the color temperature adjustment precision is low, making it difficult to meet the requirements of high-end applications for color temperature consistency.
[0006] Its narrow spectral coverage makes it difficult to meet the requirements of high-end applications for color temperature consistency and color rendering.
[0007] Therefore, there is an urgent need to design a COB light source and its system that adjusts the color coordinates along the black track to solve the above problems. Utility Model Content
[0008] The technical problem to be solved by this utility model is to provide a COB light source and system that adjusts the color coordinates along the black track line, with high color temperature adjustment accuracy and a wide spectral coverage.
[0009] To address the aforementioned technical problems, this utility model provides a COB light source with adjustable color coordinates along a black track line, comprising a substrate and a light-emitting module assembly. The substrate has a central light-emitting region and an auxiliary light-emitting region for emitting white light. The auxiliary light-emitting region is a closed ring structure surrounding the central light-emitting region. The light-emitting module assembly is disposed within the central light-emitting region and includes several first color temperature modules, several second color temperature modules, and several third color temperature modules. The first, second, and third color temperature modules are alternately distributed within the central light-emitting region. The white light emitted by the auxiliary light-emitting region has a color temperature of 4000K-6000K, and the color temperature of the light-emitting modules is 1800K-8500K.
[0010] As an improvement to the above scheme, the white light emitted by the auxiliary light-emitting area has a color temperature of 5000K.
[0011] As an improvement to the above scheme, the central light-emitting area is provided with a central area, and the central area is provided with a plurality of second color temperature modules and a plurality of third color temperature modules arranged in a rectangular array with alternating intervals, and the first color temperature modules are located on the periphery of the central area.
[0012] As an improvement to the above solution, the substrate has a square planar shape with a side length of 6.5cm-35.5cm.
[0013] As an improvement to the above scheme, the planar shape of the auxiliary light-emitting area is a ring with an outer diameter of 4.5cm-30cm and a width of 0.3cm-1.5cm.
[0014] As an improvement to the above scheme, the central region is provided with the first color temperature module on both sides in the horizontal direction; the central region is provided with a number of second color temperature modules and a number of third color temperature modules on both sides in the vertical direction.
[0015] As an improvement to the above solution, the central region is provided with the first color temperature module on both sides in the vertical direction.
[0016] As an improvement to the above solution, the intermediate light-emitting region further includes a thermally conductive insulating layer, which is disposed between the light-emitting module group and the substrate.
[0017] As an improvement to the above solution, the intermediate light-emitting area further includes an optical lens, which covers the light-emitting module group, and the shape of the optical lens is adapted to the shape of the intermediate light-emitting area.
[0018] Accordingly, this utility model also discloses a COB light source system for adjusting color coordinates along a black track, including the aforementioned COB light source for adjusting color coordinates along a black track, and a power supply circuit and a control unit electrically connected to the COB light source; the power supply circuit is used to provide power to the COB light source, and the control unit is used to adjust the luminous intensity of the first color temperature module, the second color temperature module, the third color temperature module and the auxiliary light-emitting area according to a preset color temperature or a user input command.
[0019] The beneficial effects of implementing this utility model are as follows:
[0020] This invention relates to a COB light source that adjusts color coordinates along a black track. By integrating three modules with different color temperatures (a first color temperature module, a second color temperature module, and a third color temperature module) and employing an alternating and distributed arrangement, it achieves an ultra-wide color temperature range adjustment. Furthermore, by setting up an auxiliary light-emitting area, a new white light channel is added, enabling precise color coordinate adjustment and accurate positioning of the color coordinates along the black track. This further expands the spectral coverage of the light source and optimizes its spectral characteristics. This allows the light source to more closely approximate the spectral characteristics of natural light, improving its performance in simulating natural light, with high color temperature adjustment accuracy and a wide spectral coverage.
[0021] Furthermore, this invention expands the spectral coverage of the light source and optimizes its optical performance by optimizing the color temperature design and precise size and structural definition of the auxiliary light-emitting area, making it closer to the characteristics of natural light sources. In addition, integrating the COB light source with the driving circuit and control unit enables intelligent control, providing users with a convenient operating experience. It also improves the performance of the light source in different application scenarios, making it more practical and competitive in fields such as professional lighting, film and television shooting, and high-end displays. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the first embodiment of the COB light source that adjusts the color coordinates along the black track line according to this utility model.
[0023] Figure 2 This is a schematic diagram of the second embodiment of the COB light source of the present invention, which adjusts the color coordinates along the black track line.
[0024] Figure 3 This is a schematic diagram of the third embodiment of the COB light source that adjusts the color coordinates along the black track line according to this utility model.
[0025] Figure 4 The CIE chromaticity diagram is provided for the COB light source of this invention, which adjusts the chromaticity coordinates along the black track to achieve precise positioning of the chromaticity coordinates on the black track.
[0026] Figure 5This is a schematic diagram of the COB light source system that adjusts the color coordinates along the black track line according to this invention. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.
[0028] like Figure 1 As shown, Figure 1 The first embodiment of the COB light source of the present invention, which adjusts the color coordinates along the black track, is shown. It includes a substrate 1 and a light-emitting module group 2. The substrate 1 is provided with a central light-emitting area 11 and an auxiliary light-emitting area 3 for emitting white light. The auxiliary light-emitting area 3 is a closed ring structure and surrounds the central light-emitting area 11.
[0029] The light-emitting module group 2 is located within the central light-emitting area 11. The light-emitting module group 2 includes a plurality of first color temperature modules 21, a plurality of second color temperature modules 22, and a plurality of third color temperature modules 23.
[0030] The first color temperature module 21, the second color temperature module 22, and the third color temperature module 23 are alternately distributed in the intermediate light-emitting area 11;
[0031] The white light emitted by the auxiliary light-emitting area 3 has a color temperature of 4000K-6000K, and the color temperature of the light-emitting module 2 is 1800K-8500K.
[0032] This invention relates to a COB light source with adjustable color coordinates along a black track. By integrating three modules with different color temperatures (first color temperature module 21, second color temperature module 22, and third color temperature module 23) and employing an alternating distribution, it achieves an ultra-wide color temperature range adjustment. Furthermore, by setting the auxiliary light-emitting area 3, a new white light channel is added, enabling precise color coordinate adjustment and accurate positioning of the color coordinates along the black track. This further expands the spectral coverage of the light source and optimizes its spectral characteristics. This allows the light source to more closely approximate the spectral characteristics of natural light, improving its performance in simulating natural light, with high color temperature adjustment accuracy and a wide spectral coverage.
[0033] To achieve more precise color coordinate adjustment, preferably, the white light emitted by the auxiliary light-emitting area 3 has a color temperature of 5000K. By providing white light with a color temperature of 5000K as a "reference", it helps other colors of light to mix better, thereby achieving a wider range of color temperature adjustments.
[0034] In terms of the overall structure of the COB light source that adjusts the color coordinates along the black track line in this utility model, the middle light-emitting area 11 is provided with a central area 111, and the central area 111 is provided with a plurality of second color temperature modules 22 and a plurality of third color temperature modules 23 that are arranged in a rectangular array at intervals.
[0035] The first color temperature module 21 is located on the periphery of the central region 111;
[0036] Regarding the specific shape and size of the substrate 1, the planar shape of the substrate 1 is square, and the side length a is 6.5cm-35.5cm.
[0037] The auxiliary light-emitting area 3 has a planar shape of a ring, with an outer diameter R of 4.5cm-30cm and a width of 0.3cm-1.5cm for the ring D.
[0038] It should be noted that the COB light source of this invention, which adjusts the color coordinates along the black track line, limits the planar shape of the substrate 1 to a square with a side length of 6.5cm-35.5cm, making it adaptable to the needs of different application scenarios. This design not only improves the flexibility of the light source but also ensures the performance stability of the light source at different sizes. By limiting the planar shape of the auxiliary light-emitting region 3 to a ring with an outer diameter R of 4.5cm-30cm and a ring width D of 0.3cm-1.5cm, the size and structure of the auxiliary light-emitting region 3 are further optimized. This design not only improves the optical performance of the light source but also ensures the coordinated operation of the auxiliary light-emitting region 3 and the central light-emitting region 11, thereby enhancing the overall performance of the light source.
[0039] like Figure 1 As shown, in the first embodiment, the side length a of the substrate 1 is 13.35cm, the outer diameter of the auxiliary light-emitting area 3 is 9cm, and the width of the ring is 0.65cm;
[0040] The central region 111 is provided with a second color temperature module 22 and a third color temperature module 23 arranged alternately in the horizontal and vertical directions, and the rows and columns formed by the second color temperature module 22 and the third color temperature module 23 are 4 rows and 4 columns.
[0041] The central region 111 is provided with the first color temperature module 21 on both sides in the horizontal direction;
[0042] The central region 111 has several second color temperature modules 22 and several third color temperature modules 23 arranged alternately on both sides in the vertical direction.
[0043] Specifically, the central region 111 has two vertically arranged first color temperature modules 21 on both horizontal sides;
[0044] The central area 111 has two second color temperature modules 22 and two third color temperature modules 23 on both vertical sides, wherein the two third color temperature modules 23 are arranged vertically in the middle, and the two second color temperature modules 22 are arranged horizontally on both sides of the two third color temperature modules 23.
[0045] like Figure 2 As shown, Figure 2 The second embodiment of the COB light source of the present invention, which adjusts the color coordinates along the black track line, is shown. Unlike the first embodiment, the side length a of the substrate is 15.8 cm, the outer diameter R of the auxiliary light-emitting area 3 is 12.5 cm, and the width D of the ring is 0.65 cm.
[0046] Furthermore, since the outer diameter of the auxiliary light-emitting area 3 is larger than that of the first embodiment, the first color temperature module 21 is provided on both sides of the central area 111 in the vertical direction, that is, the first color temperature module 21 is added on both sides of the central area 111 in the vertical direction.
[0047] The central region 111 is provided with a second color temperature module 22 and a third color temperature module 23 arranged alternately in the horizontal and vertical directions, and the rows and columns formed by the second color temperature module 22 and the third color temperature module 23 are 4 rows and 6 columns.
[0048] The central region 111 has two vertically arranged first color temperature modules 21 on both horizontal sides;
[0049] The central area 111 has two first color temperature modules 21, six second color temperature modules 21 and six third color temperature modules 23 arranged in three rows on both vertical sides. The first row consists of first color temperature modules 21, second color temperature modules 22, third color temperature modules 23 and first color temperature modules 21 arranged in sequence at intervals.
[0050] The second row consists of a second color temperature module 22, a third color temperature module 23, and a second color temperature module 22 and a third color temperature module 23 arranged at intervals in sequence.
[0051] The third row consists of the second color temperature module 22, the third color temperature module 23, the second color temperature module 22, the third color temperature module 23, the second color temperature module 22, and the third color temperature module 23 arranged at intervals.
[0052] like Figure 3 As shown, Figure 3 The third embodiment of the COB light source of this utility model, which adjusts the color coordinates along the black track, is shown. Unlike the first embodiment, the side length a of the substrate is 17.85cm, the outer diameter R of the auxiliary light-emitting area 3 is 15.5cm, and the width D of the ring is 0.65cm.
[0053] The intermediate light-emitting area 11 has a central area 111 located at its center. The central area 111 has a second color temperature module 22 and a third color temperature module 23 arranged alternately along the horizontal and vertical directions. The rows and columns formed by the second color temperature module 22 and the third color temperature module 23 are 5 rows and 8 columns.
[0054] The central region 111 has two vertically arranged first color temperature modules 21 on both horizontal sides;
[0055] The central area 111 has four first color temperature modules 21, eight second color temperature modules 22 and eight third color temperature modules 23 arranged in four rows on both vertical sides, wherein the first row has two first color temperature modules 21 arranged at intervals.
[0056] The second row consists of a second color temperature module 22, a third color temperature module 23, and a second color temperature module 22 and a third color temperature module 23 arranged at intervals in sequence.
[0057] The third row consists of a third color temperature module 23, a second color temperature module 22, a third color temperature module 23, a second color temperature module 22, a third color temperature module 23, and a second color temperature module 22 arranged at intervals in sequence.
[0058] The fourth row consists of the first color temperature module 21, the second color temperature module 22, the third color temperature module 23, the second color temperature module 22, the third color temperature module 23, the second color temperature module 22, the third color temperature module 23, and the first color temperature module 21 arranged at intervals.
[0059] It should be noted that the three embodiments of the COB light source with color coordinate adjustment along the black track line of this utility model all further optimize the structural design of the light source by specifically defining the side length of the substrate 1, the outer diameter R and the width D of the auxiliary light-emitting area 3, and the specific arrangement of the modules in the central light-emitting area 11. This design not only improves the light output efficiency of the light source, but also ensures the performance stability of the light source under specific dimensions, while providing more precise color temperature adjustment capabilities for different application scenarios.
[0060] The central light-emitting region 11 also includes a thermally conductive insulating layer (not shown in the figure), which is disposed between the light-emitting module group 2 and the substrate 1. The thermally conductive insulating layer can quickly conduct heat generated by the module, improving heat dissipation efficiency and extending the chip's lifespan. The thermally conductive insulating layer is made of thermally conductive silicone or aluminum nitride ceramic, but is not limited to these two materials.
[0061] To improve light transmission efficiency, the intermediate light-emitting region 11 also includes an optical lens (not shown in the figure), which covers the light-emitting module group 2, and the shape of the optical lens is adapted to the shape of the intermediate light-emitting region 11. The optical lens is made of optical glass or polycarbonate, but is not limited to these.
[0062] like Figure 4 As shown, this invention's COB light source, which adjusts color coordinates along the black body line, provides more precise color coordinate adjustment capabilities in the CIE chromaticity diagram by adding a white light channel. This allows for accurate positioning of the color coordinates along the black body trajectory (black body line). Whether reproducing the soft warm white light of early morning or simulating the bright cool white light of midday, the product can dynamically adjust the light intensity of each channel to ensure the color coordinates stably align with the black body line, significantly improving the color rendering consistency and color temperature accuracy of the light source.
[0063] like Figure 5 As shown, correspondingly, this utility model also discloses a COB light source system that adjusts the color coordinates along the black track, including the COB light source 101 that adjusts the color coordinates along the black track, and a power supply circuit 102 and a control unit 103 that are electrically connected to the COB light source 101.
[0064] The power supply circuit 102 is used to provide power to the COB light source 101, and the control unit 103 is used to adjust the luminous intensity of the first color temperature module 21, the second color temperature module 22, the third color temperature module 23 and the auxiliary light-emitting area 3 according to the preset color temperature or user input instructions, so as to achieve precise control of color temperature and adjustment of color coordinates.
[0065] The luminous intensity of the first color temperature module 21, the luminous intensity of the second color temperature module 22, the luminous intensity of the third color temperature module 23, and the luminous intensity of the auxiliary luminous region 3 can all be adjusted independently.
[0066] In summary, this invention's COB light source, which adjusts color coordinates along a black track, integrates three modules with different color temperatures (first color temperature module 21, second color temperature module 22, and third color temperature module 23) and employs an alternating distribution to achieve an ultra-wide color temperature range adjustment. Furthermore, by setting the auxiliary light-emitting area 3, a new white light channel is added, providing precise color coordinate adjustment capabilities. This enables accurate positioning of the color coordinates along the black track, further expanding the spectral coverage of the light source and optimizing its spectral characteristics. This allows the light source to more closely resemble the spectral characteristics of natural light, improving its performance in simulating natural light, with high color temperature adjustment accuracy and a wide spectral coverage. This invention's COB light source, which adjusts color coordinates along a black track, also optimizes the color temperature design of the auxiliary light-emitting area 3 to more closely approximate the characteristics of natural light. In addition, integrating the COB light source 101 with the driving circuit 102 and control unit 103 achieves intelligent control, providing users with a convenient operating experience. Simultaneously, it enhances the performance of the light source in different application scenarios, making it more practical and competitive in professional lighting, film and television shooting, and high-end displays.
[0067] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A COB light source that adjusts chromatic coordinates along a black track, characterized in that, The device includes a substrate and a light-emitting module assembly. The substrate has a central light-emitting area and an auxiliary light-emitting area for emitting white light. The auxiliary light-emitting area is a closed ring structure and surrounds the central light-emitting area. The light-emitting module group is located in the central light-emitting area, and the light-emitting module group includes a plurality of first color temperature modules, a plurality of second color temperature modules and a plurality of third color temperature modules; The first color temperature module, the second color temperature module, and the third color temperature module are alternately distributed within the central light-emitting area; The white light emitted by the auxiliary light-emitting area has a color temperature of 4000K-6000K, and the color temperature of the light-emitting module is 1800K-8500K.
2. The COB light source with adjustable chromatic coordinates along the black track line according to claim 1, characterized in that, The white light emitted by the auxiliary light-emitting area has a color temperature of 5000K.
3. The COB light source with chromatic coordinates adjusted along the black track line according to claim 1, characterized in that, The central luminescent area has a central region, on which are arranged a plurality of second color temperature modules and a plurality of third color temperature modules arranged in a rectangular array with alternating intervals. The first color temperature modules are located on the periphery of the central region.
4. The COB light source with chromatic coordinates adjusted along the black track line according to claim 1, characterized in that, The substrate has a square shape with a side length of 6.5cm-35.5cm.
5. The COB light source with adjustable chromatic coordinates along the black track line according to claim 4, characterized in that, The auxiliary light-emitting area is circular in shape, with an outer diameter of 4.5cm-30cm and a width of 0.3cm-1.5cm.
6. The COB light source with adjustable chromatic coordinates along the black track line according to claim 3, characterized in that, The central area is equipped with the first color temperature module on both sides in the horizontal direction; The central area has several second color temperature modules and several third color temperature modules arranged alternately on both sides in the vertical direction.
7. The COB light source with adjustable chromatic coordinates along the black track line according to claim 6, characterized in that, The central area has the first color temperature module on both sides in the vertical direction.
8. The COB light source with adjustable chromatic coordinates along the black track line according to claim 1, characterized in that, The central light-emitting region also includes a thermally conductive insulating layer, which is disposed between the light-emitting module group and the substrate.
9. The COB light source with adjustable chromatic coordinates along the black track line according to claim 1, characterized in that, The central light-emitting area also includes an optical lens, which covers the light-emitting module group, and the shape of the optical lens is adapted to the shape of the central light-emitting area.
10. A COB light source system for adjusting chromatic coordinates along a black track, characterized in that, Includes a COB light source that adjusts the color coordinates along a black track as described in any one of claims 1-9, and a power supply circuit and a control unit electrically connected to the COB light source; The power supply circuit is used to provide power to the COB light source, and the control unit is used to adjust the luminous intensity of the first color temperature module, the second color temperature module, the third color temperature module and the auxiliary light-emitting area according to the preset color temperature or user input instructions.