LED light-emitting unit and LED light source

Abstract

Disclosed are an LED light-emitting unit (10) and an LED light source (20). The LED light-emitting unit (10) comprises a support frame (100) and three or more light-emitting light sources (200) mounted on the support frame (100). All of the light-emitting light sources (200) are light sources of three or more different colors. The support frame (100) has a light-emitting surface and a non-light-emitting surface disposed opposite to each other, and all of the light-emitting light sources (200) are disposed on the light-emitting surface. Each light-emitting light source (200) is connected to a positive electrode and a negative electrode corresponding thereto, and the positive electrode and the negative electrode of each light-emitting light source (200) are separately disposed on the non-light-emitting surface. The LED light-emitting unit (10) provides rich color effects. All of the light-emitting light sources (200) of the LED light-emitting unit are disposed on the light-emitting surface of the support frame (100), and all of the positive electrodes and the negative electrodes are arranged on the non-light-emitting surface of the support frame (100). Thus, a plurality of LED light-emitting units (10) can be assembled more compactly, thereby reducing the area of the LED light source (20) and facilitating miniaturization of the LED light source (20).

Description

LED light-emitting unit and LED light source

[0001] This application claims priority to Chinese Patent Application No. 2025202806444, filed on February 20, 2025, entitled "LED Light Emitting Unit and LED Light Source", the whole or part of which is incorporated herein by reference. Technical Field

[0002] This application relates to the field of lighting equipment technology, and in particular to an LED light-emitting unit and an LED light source. Background Technology

[0003] In modern photography and videography, LED photography and videography lights are often used as auxiliary light sources to achieve better image quality. To adjust the color of the emitted light, LED photography and videography lights now have multiple different colored light-emitting chips, such as RGB, mounted on their substrate.

[0004] To facilitate installation, current market LEDs often integrate multiple color LED chips onto a single mounting bracket to form a single light-emitting unit. These units are then arranged on a substrate according to specific rules to create an LED light source. The LED chips and the substrate are connected via electrodes located on the bracket. However, due to limitations in current LED packaging structures, these electrodes can only extend from the outside of the bracket, resulting in significant spacing between adjacent light-emitting units on the substrate. This makes the assembly of multiple units less compact, increasing the area of ​​the LED light source and hindering its miniaturization. Summary of the Invention

[0005] In a first aspect, embodiments of this application provide an LED light-emitting unit, including a bracket and three or more light-emitting light sources mounted on the bracket, wherein all light-emitting light sources are three or more different colors of light sources;

[0006] The bracket has a light-emitting surface and a backlight surface arranged opposite to each other. All light sources are arranged on the light-emitting surface, and each light source is connected to a corresponding positive electrode and a negative electrode. The positive electrode and negative electrode of each light source are arranged on the backlight surface.

[0007] In the LED light-emitting unit, the positive electrode and negative electrode of each light-emitting source are respectively arranged to protrude from the backlight surface.

[0008] In the LED light-emitting unit, the support is made of ceramic material and has a rectangular horizontal cross-section; the positive electrodes of all light-emitting sources are distributed on the same side of the support, and the negative electrodes of all light-emitting sources are distributed on the opposite side of the positive electrodes.

[0009] In the LED light-emitting unit, the positive electrode of each light-emitting source has a gap with the peripheral edge of the bracket, and the negative electrode of each light-emitting source has a gap with the peripheral edge of the bracket.

[0010] In the LED light-emitting unit, the LED light-emitting unit also includes a heat sink structure, which is disposed on the bracket and located between the positive and negative electrodes of all light-emitting light sources, and the heat sink structure protrudes from the backlight surface.

[0011] In the LED light-emitting unit, light sources of different colors are connected to different positive and negative electrodes respectively; light sources of the same color are connected in series and connected to the same positive and negative electrodes.

[0012] In the LED light-emitting unit, there are three light-emitting sources, each of which is a different color, and the three light-emitting sources are arranged in a triangular pattern.

[0013] In the LED light-emitting unit, there are three light-emitting sources, each of which is a different color, and the three light-emitting sources are arranged in an L-shape.

[0014] In the LED light-emitting unit, the three light sources are a red light source, a green light source, and a blue light source.

[0015] In the LED light-emitting unit, the three light sources are a warm light source, a cool light source, and a neutral light source.

[0016] In the LED light-emitting unit, there are four light-emitting sources, which are arranged in a rectangular array and are four different colors.

[0017] In the LED light-emitting unit, there are four light-emitting sources, which are arranged in a rectangular array and are each a different color light source.

[0018] In the LED light-emitting unit, the four light sources are two red light sources, one green light source, and one blue light source, with the two red light sources arranged diagonally.

[0019] In the LED light-emitting unit, the four light sources are one warm light source, one cold light source, and two neutral light sources, with the two neutral light sources arranged diagonally.

[0020] In the LED light-emitting unit, the four light sources are a red light source, a green light source, a blue light source, and a white light source.

[0021] Secondly, embodiments of this application also provide an LED light source, including a substrate and two or more LED light-emitting units as described in any of the preceding claims arranged on the substrate, wherein the backlight surface of the support of each LED light-emitting unit is connected to the substrate, and the peripheral side surfaces of the supports of any two adjacent LED light-emitting units are closely attached to each other.

[0022] The substrate is equipped with a power supply circuit, and the positive and negative electrodes of all light sources of each LED light-emitting unit are electrically connected to the power supply circuit.

[0023] In the LED light source described above, all LED light-emitting units arranged on the substrate are the same type of light-emitting unit.

[0024] In the LED light source, all the LED light-emitting units arranged on the substrate include a first light-emitting unit and a second light-emitting unit, and the light sources in the first light-emitting unit and the second light-emitting unit are different in color.

[0025] The LED light-emitting unit and LED light source provided in this application include a bracket and three or more light-emitting sources mounted on the bracket, all of which are light sources of three or more different colors. The bracket has a light-emitting surface and a backlight surface arranged opposite to each other, and all light-emitting sources are disposed on the light-emitting surface. Each light-emitting source is connected to a corresponding positive electrode and a negative electrode, and the positive electrode and negative electrode of each light-emitting source are disposed on the backlight surface.

[0026] By incorporating three or more different colors of light sources into an LED light-emitting unit, the color effects of the LED light-emitting unit can be enriched, expanding its applicable scenarios. By placing all light sources on the emitting surface of the bracket and arranging the positive and negative electrodes connected to each light source on the backlight surface of the bracket, the peripheral side space of the bracket is not occupied. Therefore, when multiple LED light-emitting units are mounted on the LED light source substrate, the peripheral side surfaces of the brackets of any two adjacent LED light-emitting units can be tightly fitted, greatly reducing the installation spacing between the LED light-emitting units. This allows for a more compact assembly of multiple LED light-emitting units, thereby reducing the area of ​​the LED light source and promoting its miniaturization. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the light-emitting surface of the bracket of an LED light-emitting unit according to an embodiment of this application.

[0028] Figure 2 is a schematic diagram of the backlight surface of the support for the LED light-emitting unit shown in Figure 1.

[0029] Figure 3 is a schematic diagram of the light-emitting surface of the support of an LED light-emitting unit according to another embodiment of this application.

[0030] Figure 4 is a schematic diagram of the backlight surface of the support for the LED light-emitting unit shown in Figure 3.

[0031] Figure 5 is a schematic diagram of the light-emitting surface of the bracket of an LED light-emitting unit according to another embodiment of this application.

[0032] Figure 6 is a schematic diagram of the backlight surface of the support for the LED light-emitting unit shown in Figure 5.

[0033] Figure 7 is a schematic diagram of the AA cross-section of the LED light-emitting unit shown in Figure 3.

[0034] Figure 8 is a schematic diagram of the BB cross-section of the LED light-emitting unit shown in Figure 3.

[0035] Figure 9 is a schematic diagram of the structure of an LED light source according to an embodiment of this application.

[0036] The reference numerals in the attached figures are explained as follows: 10-LED light-emitting unit; 100-support; 200-light source; 210-red light source; 220-green light source; 230-blue light source; 240-warm light source; 250-cool light source; 260-neutral light source; 270-white light source; 300-positive electrode; 400-negative electrode; 500-heat sink structure; 20-LED light source; 21-substrate; 22-first light-emitting unit; 23-second light-emitting unit. Detailed Implementation

[0037] This application provides an LED light-emitting unit and an LED light source. To make the purpose, technical solution, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0038] Referring to Figure 1, the LED light-emitting unit 10 according to an embodiment of the present invention includes a bracket 100 and three or more light-emitting sources 200 mounted on the bracket 100, all of which are light sources of three or more different colors.

[0039] As shown in Figure 1, in one embodiment, the number of light-emitting sources 200 mounted on the bracket 100 is three, and the three light-emitting sources 200 are light sources of three different colors. For example, the three light-emitting sources 200 can be red light source 210 (labeled R), green light source 220 (labeled G), and blue light source 230 (labeled B).

[0040] It is worth noting that in this embodiment, the number of light-emitting sources 200 mounted on the bracket 100 is three, namely a red light source 210, a green light source 220, and a blue light source 230. However, this application is not limited to this. In other embodiments, the light source colors of the three light-emitting sources 200 can be changed according to specific needs. For example, the three light-emitting sources 200 can be respectively a warm light source 240, a cool light source 250, and a neutral light source 260. Alternatively, the three light-emitting sources 200 can be respectively a red light source 210, a cool light source 250, and a blue light source 230. In other words, the three light-emitting sources 200 can be any three different colors of light sources among red light source 210, green light source 220, blue light source 230, warm light source 240, cool light source 250, neutral light source 260, and white light source 270.

[0041] Alternatively, referring to Figure 3, in another embodiment, the number of light-emitting sources 200 mounted on the bracket 100 is four. These four light-emitting sources 200 can be three different colors of light, meaning that two of the four light-emitting sources 200 have the same color. For example, the four light-emitting sources 200 can be two red light sources 210 (labeled R), one green light source 220 (labeled G), and one blue light source 230 (labeled B). Alternatively, the four light-emitting sources 200 can be one warm light source 240, one cool light source 250, and two neutral light sources 260.

[0042] Of course, in other embodiments, as shown in FIG5, the number of light-emitting sources 200 mounted on the bracket 100 is four, and the four light-emitting sources 200 can be four different colors of light sources. For example, the four light-emitting sources 200 are a red light source 210 (marked as R), a green light source 220 (marked as G), a blue light source 230 (marked as B), and a white light source 270 (marked as W).

[0043] It is understood that in other embodiments, the colors of the four light-emitting light sources 200 can also be changed according to specific needs. That is, in this application, the four light-emitting light sources 200 can be any three or four different colors of light sources, such as red light source 210, green light source 220, blue light source 230, warm light source 240, cool light source 250, neutral light source 260, and white light source 270.

[0044] It is understood that in other embodiments, the number of light sources 200 mounted on the bracket 100 in each LED light-emitting unit 10 can be further increased, and the number of light source colors can be increased or not increased, which will not be elaborated further here. In other words, in this application, the number of light sources and the number of light source colors in each LED light-emitting unit 10 can be designed as needed, as long as the purpose of multiple light sources 200 mounted on the bracket 100 being light sources of three or more different colors is achieved.

[0045] In this application, by including three or more light sources 200 of different colors in the LED light-emitting unit 10, users can select and activate the light sources 200 of different colors according to their own preferences to achieve a variety of color effects, thereby enriching the color presentation style of the LED light-emitting unit 10 and expanding the applicable scenarios of the LED light-emitting unit 10.

[0046] It should be noted that, in this application, the red light source 210 is a light source capable of emitting red light, with a wavelength range of 615nm to 660nm. The green light source 220 is a light source capable of emitting green light, with a wavelength range of 515nm to 540nm. The blue light source 230 is a light source capable of emitting blue light, with a wavelength range of 420nm to 485nm. The warm light source 240 is a light source capable of emitting warm light, such as amber light, with a wavelength range of 580nm to 600nm. The cool light source 250 is a light source capable of emitting cool light, such as cyan light, with a wavelength range of 485nm to 515nm. The neutral light source 260 is a light source capable of emitting neutral light, such as lemon yellow light, with a wavelength range of 520nm to 580nm. The white light source 270 is a light source capable of emitting white light, with a wavelength range of 450nm to 465nm.

[0047] It should be noted that in this application, the red light source 210 can be a red light-emitting chip that emits red light when powered on. The green light source 220 can be a green light-emitting chip that emits green light when powered on. The blue light source 230 can be a blue light-emitting chip that emits blue light when powered on. The warm light source 240 can be a light source device that emits amber light by combining a blue light-emitting chip with a corresponding phosphor. The cool light source 250 can be a cyan light-emitting chip that emits cyan light when powered on. The neutral light source 260 can be a light source device that emits lemon-yellow light by combining a blue light-emitting chip with a corresponding phosphor. The white light source 270 can be a light source device that emits white light by combining a blue light-emitting chip with a corresponding phosphor.

[0048] It is understood that in other embodiments, the red light source 210 can also be a light source device that emits red light by combining a non-red light-emitting chip with a corresponding phosphor. Similarly, the green light source 220, blue light source 230, and cool light source 250 can also be in this manner. Furthermore, the warm light source 240 can be a light source device composed of multiple chips, which emits amber light when powered on. Similarly, the neutral light source 260 can be a light source device composed of multiple chips, which emits lemon-yellow light when powered on; the white light source 270 can be a light source device composed of multiple chips, which emits white light when powered on, depending on the specific circumstances.

[0049] It is understood that in this application, each light source 200 includes a corresponding light-emitting chip, and each light-emitting chip of the light source 200 is connected to a corresponding positive and negative electrode. When the positive and negative electrodes are connected to the positive and negative terminals of an external power supply respectively, the light-emitting chip can emit light to obtain a light source 200 of the corresponding color.

[0050] As shown in Figures 3, 4, and 7, the bracket 100 has a light-emitting surface and a backlight surface arranged opposite to each other, and all light-emitting sources 200 are disposed on the light-emitting surface. For example, the light-emitting chips of all light-emitting sources 200 are disposed on the light-emitting surface.

[0051] The bracket 100 may have a three-dimensional shape, with its light-emitting surface and backlight surface facing each other. The bracket 100 also has a circumferential outer side located between the light-emitting surface and the backlight surface.

[0052] Referring to Figure 3, when the backlight surface of the bracket 100 faces vertically downwards, the horizontal cross-section of the bracket 100 is rectangular. Optionally, the horizontal cross-section of the bracket 100 is square. In this embodiment, by designing the bracket 100 as a rectangle, the bracket 100 has four straight outer surfaces circumferentially, which facilitates seamless splicing between adjacent brackets 100, allowing multiple LED light-emitting units 10 to be seamlessly assembled onto the LED light source substrate. It is understood that in other embodiments, the bracket 100 may also have other shapes, such as regular polygons, parallelograms, or semicircles, etc.

[0053] It should be noted that, in this application, the bracket 100 is preferably designed with at least one side of its circumference being flat, so that it can be spliced ​​with another bracket 100.

[0054] In the embodiments of this application, the bracket 100 may be made of ceramic material. Ceramic material has at least excellent insulation and high temperature resistance, thereby enabling the bracket 100 to reliably maintain the insulation between the electrodes of the LED light-emitting unit 10, maintain the structural stability of the LED light-emitting unit 10, and ensure the stable and safe operation of the LED light-emitting unit 10. Of course, it is understood that in other embodiments, the bracket 100 may also be made of metal or plastic material, depending on the specific circumstances.

[0055] As shown in Figures 3, 4, and 7, each light source 200 is connected to a corresponding positive electrode 300 and a negative electrode 400. For example, the light-emitting chip of each light source 200 is connected to a corresponding positive electrode 300 and a negative electrode 400. Furthermore, the positive electrode 300 and the negative electrode 400 of each light source 200 are respectively disposed on the backlight surface.

[0056] In conventional technology, because the electrodes extend outward from the support, adjacent supports not only need to be spaced apart by two electrode thicknesses, but also require a certain safety distance between the two electrodes to prevent short circuits. Therefore, in conventional technology, the distance between the supports of two adjacent light-emitting units is relatively large.

[0057] In the embodiments of this application, by arranging multiple light-emitting sources 200 on the light-emitting surface of the bracket 100, and by arranging the positive electrode 300 and negative electrode 400 connected to each light-emitting source 200 on the backlight surface of the bracket 100, the outer peripheral side surface of the bracket 100 is not occupied. Since the positive electrode 300 and negative electrode 400 connected to each light-emitting source 200 are respectively arranged on the backlight surface of the bracket 100, there is no need to space the positions of the two electrodes and maintain a safe distance between adjacent brackets 100. Therefore, when multiple LED light-emitting units 10 are mounted on the substrate 21 of the LED light source 20, the peripheral side surfaces of the brackets 100 of any two adjacent LED light-emitting units 10 can be tightly fitted, thereby greatly reducing the installation spacing between the LED light-emitting units 10, allowing the multiple LED light-emitting units 10 to be assembled more compactly, thus reducing the area of ​​the LED light source 20 and facilitating the miniaturization of the LED light source 20.

[0058] Referring to Figure 1, in one embodiment, the number of light-emitting sources 200 mounted on the bracket 100 is three, and the three light-emitting sources 200 can be distributed in an L-shape on the light-emitting surface of the bracket 100. Alternatively, in other embodiments not shown, the three light-emitting sources 200 can also be distributed in a triangular shape on the light-emitting surface of the bracket 100.

[0059] In this embodiment, the LED light-emitting unit 10 includes three light-emitting light sources 200 arranged in a triangular or L-shaped pattern. The distribution of each light source in the LED light-emitting unit 10 is relatively regular and symmetrical, which can help improve the light emission uniformity and consistency of the LED light-emitting unit 10.

[0060] Referring to Figure 3, in one embodiment, four light-emitting sources 200 are mounted on the bracket 100, and the four light-emitting sources 200 are distributed in a rectangular array on the light-emitting surface of the bracket 100. For example, the four light-emitting sources 200 are two red light sources 210, one green light source 220, and one blue light source 230, and these four light sources are distributed in a 2×2 matrix. The two red light sources 210 are arranged diagonally. Alternatively, in other embodiments, the two red light sources 210 may be arranged side-by-side.

[0061] In this embodiment, the LED light-emitting unit 10 includes four light-emitting light sources 200 arranged in a rectangular array. The distribution of each light source 200 in the LED light-emitting unit 10 is relatively regular and symmetrical, which can help improve the light emission uniformity and consistency of the LED light-emitting unit 10.

[0062] In one embodiment, light sources 200 of different colors are connected to different positive electrodes 300 and negative electrodes 400, respectively. Light sources 200 of the same color are connected in series and connected to the same positive electrode 300 and the same negative electrode 400. For example, as shown in Figures 1 and 2, when three light sources 200 are mounted on the bracket 100, and the three light sources 200 are a red light source 210, a green light source 220, and a blue light source 230, the red light source 210 is connected to a red light source 210 positive electrode R+ and a red light source 210 negative electrode R-. The green light source 220 is connected to a green light source 220 positive electrode G+ and a green light source 220 negative electrode G-. The blue light source 230 is connected to a blue light source 230 positive electrode B+ and a blue light source 230 negative electrode B-. These six electrodes, R+, R-, G+, G-, B+, and B-, are all disposed on the backlight surface of the bracket 100.

[0063] For example, as shown in Figures 3 and 4, when four light-emitting sources 200 are mounted on the bracket 100, and these four light-emitting sources 200 are two red light sources 210, one green light source 220, and one blue light source 230 respectively, the two red light sources 210 are connected in series and connected to the same positive electrode R+ and the same negative electrode R- of the red light source 210. The green light source 220 is connected to a positive electrode G+ and a negative electrode G- of the green light source 220. The blue light source 230 is connected to a positive electrode B+ and a negative electrode B- of the blue light source 230. These six electrodes, R+, R-, G+, G-, B+, and B-, are all located on the backlight surface of the bracket 100.

[0064] For example, as shown in Figures 5 and 6, when four light-emitting sources 200 are mounted on the bracket 100, and these four light-emitting sources 200 are respectively a red light source 210, a green light source 220, a blue light source 230, and a white light source 270, the red light source 210 is connected to a positive electrode R+ and a negative electrode R-. The green light source 220 is connected to a positive electrode G+ and a negative electrode G-. The blue light source 230 is connected to a positive electrode B+ and a negative electrode B-. The white light source 270 is connected to a positive electrode W+ and a negative electrode W-. These eight electrodes, R+, R-, G+, G-, B+, B-, W+, and W-, are all located on the backlight surface of the bracket 100.

[0065] In this embodiment, by connecting light sources 200 of different colors to different positive electrodes 300 and negative electrodes 400 respectively, it is convenient to independently control the light sources of different colors, thereby realizing a variety of different lighting effects of the LED light-emitting unit 10. By connecting light sources 200 of the same color in series and to the same positive electrode 300 and the same negative electrode 400, the number of electrodes set on the bracket 100 can be effectively reduced, and independent control of different color light sources can be reliably realized.

[0066] Referring to Figures 7 and 8, in one embodiment, the positive electrode 300 and negative electrode 400 of each light-emitting source 200 protrude from the backlight surface. By making the positive electrode 300 and negative electrode 400 protrude from the backlight surface, when the LED light-emitting unit 10 is mounted on the substrate 21 of the LED light source 20, the positive electrode 300 and negative electrode 400 can better contact the substrate 21, ensuring reliable electrical connection between the positive electrode 300 and negative electrode 400 and the circuit on the substrate 21, thereby improving the operational stability of the LED light-emitting unit 10.

[0067] Referring to Figure 6, in one embodiment, the positive electrodes 300 of all light-emitting light sources 200 are distributed on the same side of the support 100, and the negative electrodes 400 of all light-emitting light sources 200 are distributed on the opposite side of the positive electrodes 300.

[0068] For example, taking a rectangular bracket 100 as an example, as shown in Figure 6, the bracket 100 has four peripheral edges: upper, lower, left, and right. The positive electrodes 300 of all light-emitting sources 200, such as R+, G+, B+, and W+ mentioned above, are distributed on the upper edge of the backlight surface of the bracket 100, and the negative electrodes 400 of all light-emitting sources 200, such as R-, G-, B-, and W- mentioned above, are distributed on the lower edge of the backlight surface of the bracket 100.

[0069] In this embodiment, by distributing the positive electrodes 300 and negative electrodes 400 of all light-emitting sources 200 on opposite sides of the bracket 100, the distribution of each electrode on the bracket 100 is relatively regular and symmetrical. This facilitates the connection of the positive and negative terminals of an external power supply to the multiple positive electrodes 300 and multiple negative electrodes 400 on both sides of the bracket 100, simplifying the circuit layout. Furthermore, this design also increases the relative distance between the multiple positive electrodes 300 and multiple negative electrodes 400 on the bracket 100, reducing the risk of short circuits between electrodes and ensuring the reliable operation of the LED light-emitting unit 10.

[0070] Referring to Figure 6, in one embodiment, the positive electrode 300 of each light source 200 has a gap with the peripheral edge of the support 100. The negative electrode 400 of each light source 200 also has a gap with the peripheral edge of the support 100.

[0071] Optionally, as shown in Figure 6, the positive electrode 300 of each light source 200, such as the positive electrode R+ of the red light source 210, is located at the upper left corner of the backlight surface of the bracket 100, with a certain gap between it and the upper and left edges of the bracket 100. Similarly, the positive electrode B+ of the blue light source 230 is located at the upper edge of the backlight surface of the bracket 100, with a certain gap between it and the upper edge of the bracket 100.

[0072] As shown in Figure 6, the negative electrode 400 of each light source 200, for example, the negative electrode R- of the red light source 210, is located at the lower left corner of the backlight surface of the bracket 100, and has a certain gap between it and the lower and left edges of the bracket 100. Similarly, the negative electrode B- of the blue light source 230 is located at the lower edge of the backlight surface of the bracket 100, and has a certain gap between it and the lower edge of the bracket 100.

[0073] In this embodiment, by having gaps between the positive electrode 300 and the negative electrode 400 of each light source 200 and the peripheral edge of the bracket 100, it is possible to prevent the electrodes between two adjacent brackets 100 from coming into contact and causing a short circuit when multiple brackets 100 are installed close together. This helps to ensure that multiple LED light-emitting units 10 are independent of each other and work stably and safely.

[0074] Referring to Figures 4 and 6, in one embodiment, the LED light-emitting unit 10 further includes a heat sink structure 500, which is disposed on the support 100 and located between the positive electrode 300 and the negative electrode 400 of all light-emitting sources 200. The heat sink structure 500 can be a heat sink made of a highly thermally conductive material, such as copper or aluminum. The heat sink structure 500 can be disposed on the backlight surface of the support 100 and located between the positive electrode 300 and the negative electrode 400 of all light-emitting sources 200.

[0075] In this embodiment, by providing a heat sink structure 500, the heat generated by the LED light-emitting unit 10 during operation can be rapidly conducted to the substrate 21 and the surrounding environment, thereby helping to extend the service life of the LED light-emitting unit 10 and ensuring its stable operation. Furthermore, by arranging the heat sink structure 500 between the positive electrode 300 and the negative electrode 400 of all light-emitting sources 200, the heat sink structure 500 can fully utilize the space between the positive and negative electrodes on the backlight surface of the support 100, thus facilitating the compact design and miniaturization of the LED light-emitting unit 10.

[0076] As shown in Figure 8, optionally, the heat sink structure 500 protrudes from the backlight surface. Therefore, when the LED light-emitting unit 10 is mounted on the substrate 21 of the LED light source 20, the heat sink structure 500 can better contact the substrate 21 to quickly and reliably conduct heat to the substrate 21, thereby improving the heat dissipation effect of the LED light-emitting unit 10 and enhancing its operational stability.

[0077] Referring to Figure 9, one embodiment of this utility model also provides an LED light source 20, which includes a substrate 21 and two or more LED light-emitting units 10 of any of the above embodiments arranged on the substrate 21. The peripheral surfaces of the supports 100 of any two adjacent LED light-emitting units 10 are tightly abutted against each other. A power supply circuit is provided on the substrate 21, and the positive electrode 300 and negative electrode 400 of all light-emitting sources 200 of each LED light-emitting unit 10 are electrically connected to the power supply circuit.

[0078] In this embodiment of the LED light source 20, all light sources 200 of each LED light-emitting unit 10 are disposed on the light-emitting surface of the bracket 100, and the positive electrode 300 and negative electrode 400 connected to all light sources 200 are arranged on the backlight surface of the bracket 100, so that the peripheral side surface of the bracket 100 is not occupied. Therefore, when multiple LED light-emitting units 10 are mounted on the substrate 21, the peripheral side surfaces of the brackets 100 of any two adjacent LED light-emitting units 10 can be tightly attached, thereby reducing the mounting distance between each LED light-emitting unit 10 and making the multiple LED light-emitting units 10 more compactly assembled. Consequently, the area of ​​the LED light source 20 can be made smaller, which facilitates the miniaturization of the LED light source 20.

[0079] Referring to Figure 9, in one embodiment, all the LED light-emitting units 10 arranged on the substrate 21 may include a first light-emitting unit 22 and a second light-emitting unit 23, and the light source colors of the first light-emitting unit 22 and the second light-emitting unit 23 are different from each other.

[0080] It should be noted that in the embodiments of this application, the number and arrangement of light sources in the first light-emitting unit 22 and the second light-emitting unit 23 can be the same; the only difference between them is that the colors of the light sources are different. For example, as shown in FIG9, the first light-emitting unit 22 may include two red light sources 210 (labeled R), one green light source 220 (labeled G), and one blue light source 230 (labeled B) arranged in a matrix. The second light-emitting unit 23 may include one warm light source 240 (labeled A), one cool light source 250 (labeled C), and two neutral light sources 260 (labeled L) arranged in a matrix.

[0081] It is worth noting that in this embodiment, the first light-emitting unit 22 includes four light sources of three colors: red, green, and blue, and the second light-emitting unit 23 includes four light sources of three colors: warm, cool, and neutral. However, this application is not limited to this. In other embodiments, the number and color of the multiple light sources included in the first light-emitting unit 22 and the second light-emitting unit 23 can be changed according to specific needs. For example, the first light-emitting unit 22 may include three light sources: a red light source 210, a cool light source 250, and a blue light source 230; the second light-emitting unit 23 may include three light sources: a warm light source 240, a green light source 220, and a neutral light source 260. Alternatively, the first light-emitting unit 22 may include four light sources: a red light source 210, a cool light source 250, a blue light source 230, and a white light source 270; the second light-emitting unit 23 may include four light sources: one warm light source 240, one green light source 220, and two neutral light sources 260.

[0082] In this embodiment, by making the number and arrangement of all LED light-emitting units 10 arranged on the substrate 21 the same, it is beneficial to improve the light emission uniformity and consistency of the LED light source 20. By making the light emission colors of the multiple LED light-emitting units 10 arranged on the substrate 21 different, it is beneficial to allow more different colors of light to interweave and blend, thereby improving the light mixing effect of the LED light source 20 and improving the light emission uniformity of the LED light source 20.

[0083] As shown in Figure 9, in one embodiment, the number of first light-emitting units 22 and second light-emitting units 23 arranged on the substrate 21 are equal. For example, the number of first light-emitting units 22 and second light-emitting units 23 are both two. The two first light-emitting units 22 and the two second light-emitting units 23 can be arranged in a matrix.

[0084] Of course, in other embodiments, the number of the first light-emitting unit 22 and the second light-emitting unit 23 arranged on the substrate 21 may not be equal.

[0085] As shown in Figure 9, for example, the arrangement angles of the two first light-emitting units 22 may be different. For instance, taking the line connecting the centers of the two red light sources 210 in each first light-emitting unit 22 as the reference line for the arrangement angle, the arrangement angles of the two first light-emitting units 22 differ by 90°. Of course, in other embodiments, the arrangement angles of the two first light-emitting units 22 may also be the same.

[0086] Similarly, the arrangement angles of the two second light-emitting units 23 can be the same or different.

[0087] In embodiments not shown in this application, all LED light-emitting units 10 arranged on the substrate 21 may be identical light-emitting units. For example, identical light-emitting units refer to units with the same number of light sources, arrangement, and color. For instance, all LED light-emitting units 10 arranged on the substrate 21 may be the LED light-emitting units 10 shown in FIG. 1, that is, each LED light-emitting unit 10 includes a red light source 210, a green light source 220, and a blue light source 230 arranged in an L-shape.

[0088] For example, all the LED light-emitting units 10 arranged on the substrate 21 can be the LED light-emitting units 10 shown in Figure 3, that is, each LED light-emitting unit 10 includes two red light sources 210, one green light source 220 and one blue light source 230 arranged in a matrix.

[0089] By ensuring that all LED light-emitting units 10 arranged on the substrate 21 are identical light-emitting units, it is beneficial to improve the uniformity and consistency of light emission of the LED light source 20.

[0090] It is understood that in other embodiments, the number and arrangement of light sources in all the LED light-emitting units 10 arranged on the substrate 21 may also be different. For example, some of the LED light-emitting units 10 may include three light-emitting sources 200 arranged in a triangular pattern, while other LED light-emitting units 10 may include four light-emitting sources 200 arranged in a matrix, depending on the specific situation.

[0091] In the LED light-emitting unit and LED light source embodiments of this application, all light-emitting sources of each LED light-emitting unit are disposed on the light-emitting surface of the bracket, and the positive and negative electrodes connected to all light-emitting sources are arranged on the backlight surface of the bracket, so that the peripheral edges of the bracket are not occupied. Therefore, when multiple LED light-emitting units are mounted on the substrate, the peripheral edges of the brackets of any two adjacent LED light-emitting units can be tightly fitted, thereby reducing the mounting distance between each LED light-emitting unit and making the assembly of multiple LED light-emitting units more compact. Consequently, the area of ​​the LED light source can be made smaller, facilitating the miniaturization of the LED light source.

[0092] The specific implementation of each of the above operations can be found in the preceding embodiments, and will not be repeated here. It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this application, and all such changes or substitutions should fall within the protection scope of the appended claims.

Claims

1. An LED light-emitting unit, comprising a bracket and three or more light-emitting sources mounted on the bracket, wherein all the light-emitting sources are three or more different colors of light sources; The bracket has a light-emitting surface and a backlight surface arranged opposite to each other. All the light-emitting sources are disposed on the light-emitting surface. Each light-emitting source is connected to a corresponding positive electrode and a negative electrode. The positive electrode and the negative electrode of each light-emitting source are disposed on the backlight surface.

2. The LED light emitting unit of claim 1, wherein, The positive electrode and the negative electrode of each of the light-emitting sources are respectively arranged to protrude from the backlight surface.

3. The LED light emitting unit according to claim 1 or 2, wherein The support is made of ceramic material and has a rectangular horizontal cross-section; The positive electrodes of all the light-emitting sources are distributed on the same side of the bracket, and the negative electrodes of all the light-emitting sources are distributed on the opposite side of the positive electrodes.

4. The LED light-emitting unit according to claim 3, wherein, The positive electrode of each of the light-emitting sources has a gap with the peripheral edge of the bracket, and the negative electrode of each of the light-emitting sources has a gap with the peripheral edge of the bracket.

5. The LED light emitting unit according to claim 3 or 4, wherein It also includes a heat sink structure, which is disposed on the bracket and located between the positive electrode and the negative electrode of all the light-emitting light sources, and the heat sink structure protrudes from the backlight surface.

6. The LED light-emitting unit according to any one of claims 1 to 5, wherein, The light sources of different colors are respectively connected to different positive electrodes and negative electrodes; The light sources of the same color are connected in series and connected to the same positive electrode and the same negative electrode.

7. The LED light emitting unit according to any one of claims 1 to 6, wherein, The number of light sources is three, and the three light sources are three different colors of light sources, and the three light sources are arranged in a triangular shape.

8. The LED light emitting unit according to any one of claims 1 to 6, wherein, The number of light sources is three, and the three light sources are three different colors of light sources, and the three light sources are distributed in an L-shape.

9. The LED light emitting unit according to claim 7 or 8, wherein The three light sources are a red light source, a green light source, and a blue light source.

10. The LED light emitting unit according to claim 7 or 8, wherein, The three light sources are a warm light source, a cool light source, and a neutral light source, respectively.

11. The LED light emitting unit according to any one of claims 1 to 6, wherein, The number of light sources is four, and the four light sources are arranged in a rectangular array. The four light sources are four different colors of light sources.

12. The LED light emitting unit according to any one of claims 1 to 6, wherein, The number of light sources is four, and the four light sources are arranged in a rectangular array. The four light sources are three different colors of light sources.

13. The LED light emitting unit according to claim 11 or 12, wherein, The four light sources are two red light sources, one green light source, and one blue light source, with the two red light sources arranged diagonally.

14. The LED light emitting unit of claim 11 or 12, wherein, The four light sources are a warm light source, a cold light source, and two neutral light sources, with the two neutral light sources arranged diagonally.

15. The LED light emitting unit of claim 11 or 12, wherein, The four light sources are a red light source, a green light source, a blue light source, and a white light source.

16. An LED light source, comprising a substrate and two or more LED light-emitting units as described in any one of claims 1-15 disposed on the substrate, wherein the backlight surface of the bracket of each LED light-emitting unit is connected to the substrate, and the peripheral side surfaces of the brackets of any two adjacent LED light-emitting units are closely abutting each other. The substrate is provided with a power supply circuit, and the positive and negative electrodes of all the light emitting sources of each LED light emitting unit are electrically connected to the power supply circuit.

17. The LED light source of claim 16, wherein, All the LED light emitting units arranged on the substrate are identical light emitting units.

18. The LED light source of claim 16, wherein, All the LED light emitting units arranged on the substrate include first light emitting units and second light emitting units, and the colors of the light sources in the first light emitting units and the second light emitting units are different from each other.

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