Light source assembly and lamp

Abstract

A light source assembly (10) and a lamp. The light source assembly (10) comprises a light source substrate (11) and a plurality of light-emitting units (12) provided on the light source substrate (11); the light source substrate (11) has a geometric center (O); each light-emitting unit (12) comprises two light-emitting chips (13) of different colors which are integrated in one packaging unit and can be independently controlled; a lamp cup boundary line (15) is formed between the two light-emitting chips (13) of different colors, and each light-emitting unit (12) has a light-emitting center; and the line connecting the light-emitting center of the light-emitting unit (12) to the geometric center (O) of the light source substrate (11) is perpendicular to the lamp cup boundary line (15). The light source assembly (10) can solve the problem of non-circular light spots of existing two-color LEDs and improve the lighting effect.

Description

Light source components and lamps

[0001] This application claims priority to Chinese patent applications with application date of March 28, 2024, application number 202410370472.X, invention name “Light source assembly and lamp” and application date of March 28, 2024, application number 202420627214.0, invention name “Light source assembly and lamp”. Portions of the contents of these patent applications are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of lighting, and in particular to a light source assembly and a lamp. Background Art

[0003] In the field of lighting technology, bi-color LED lamps are widely used due to their unique ability to adjust light color. Bi-color LEDs typically contain two LED chips of different colors. By controlling the on / off and brightness of each chip, a variety of colors can be mixed and adjusted. However, existing bi-color LEDs have a significant problem when used with lenses: when only a single color chip is illuminated, the light spot distribution often becomes non-circular, similar to a semicircular spot.

[0004] This non-circular light spot results in severely uneven brightness distribution in the lamp. In lighting applications, uniform brightness distribution is crucial, not only providing a comfortable visual environment but also ensuring uniform illumination of the illuminated object. However, the non-circular light spot of existing bi-color LEDs severely impacts the lighting effect of these lamps, failing to meet user requirements for uniform brightness.

[0005] In view of this, it is indeed necessary to provide a light source assembly and a lamp to solve the above problems. Summary of the Invention

[0006] The purpose of the present application is to provide a light source assembly that can achieve uniform surface light emission when only a single-color light-emitting chip is lit.

[0007] To achieve the above-mentioned purpose, the present application provides a light source assembly for use in lamps, wherein the light source assembly includes a light source substrate and a plurality of light-emitting units arranged on the light source substrate, the light source substrate having a geometric center, each of the light-emitting units including two light-emitting chips of different colors integrated in a packaging unit and capable of being independently controlled, a lamp cup dividing line being provided between the two light-emitting chips of different colors, and each of the light-emitting units having a light-emitting center, a line connecting the light-emitting center of the light-emitting unit and the geometric center of the light source substrate being perpendicular to the lamp cup dividing line.

[0008] Optionally, the light source assembly includes light-emitting units of at least two colors, and the colors of the light-emitting chips in the light-emitting units of at least two colors are different, wherein the light-emitting units of at least two colors are arranged in a circular pattern on the light source substrate, and in two adjacent light-emitting units of the same color, the two light-emitting chips of different colors are arranged inverted.

[0009] Optionally, the plurality of light-emitting units are arranged in a multi-circle manner on the light source substrate to form a multi-circle light-emitting assembly arranged in a surrounding manner, and each circle of the light-emitting assembly includes the light-emitting units of all colors.

[0010] Optionally, the light-emitting units of all colors in the same circle are arranged cyclically on the light source substrate in sequence, and in two adjacent light-emitting units of the same color in the same circle, the light-emitting chips of two different colors are arranged inverted.

[0011] Optionally, the light-emitting units in any circle of the light-emitting components have different colors from the light-emitting units closest to them in an adjacent circle.

[0012] Optionally, the light rays emitted by the plurality of light-emitting units intersect at the geometric center of the light source substrate.

[0013] Optionally, the light source assembly further includes a plurality of lenses, and the lenses are arranged in a one-to-one correspondence with the light-emitting units.

[0014] Optionally, the lens includes a light incident cavity and a light emitting surface that are relatively arranged, the light emitting unit is arranged in the light incident cavity, and the light emitting surface includes two outer arc surfaces symmetrically arranged along the dividing line of the lamp cup, and both of the outer arc surfaces bulge toward the side away from the light emitting unit.

[0015] Optionally, the arrangement shape of the plurality of light-emitting units on the light source substrate is non-circular.

[0016] Another object of the present application is to provide a lamp including the above-mentioned light source assembly.

[0017] To achieve the above objectives, the present application provides a lamp, comprising the above light source assembly.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] The light source assembly of the present application integrates each light-emitting unit into two light-emitting chips of different colors that can be independently controlled. The brightness and color of the light-emitting chips of different colors can be adjusted according to actual needs, thereby enabling the light source assembly to achieve a variety of lighting effects and color combinations.

[0020] The light source assembly of the present application optimizes the distribution and uniformity of light by setting the line connecting the luminous center of each light-emitting unit and the geometric center of the light source substrate perpendicular to the lamp cup dividing line. Even when only a single-color light-emitting chip is lit, uniform surface illumination can be achieved. In addition, light can be projected more concentratedly and evenly to the area that needs illumination, reducing the non-circular distribution and glare problems of the light spot and improving the lighting quality and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of a light source assembly according to an embodiment of the present application.

[0022] FIG2 is an overall arrangement diagram of the light source assembly shown in FIG1 without the lens.

[0023] FIG3 is a partial enlarged view of the light source assembly shown in FIG2 .

[0024] FIG4 is a schematic structural diagram of the first light-emitting unit in the light source assembly shown in FIG3 .

[0025] FIG5 is a schematic structural diagram of a second light emitting unit in the light source assembly shown in FIG3 .

[0026] FIG6 is a cross-sectional view of the light emitting unit covering the lens in the light source assembly shown in FIG1 .

[0027] FIG. 7 is an exploded view of the structure of a lamp according to an embodiment of the present application.

[0028] FIG8 is a diagram showing the lighting effect of a single dual-color LED light-emitting chip being lit in the prior art.

[0029] FIG9 is a diagram showing the lighting effect of a single light-emitting chip in the lamp of the present application being illuminated.

[0030] Explanation of the accompanying drawings: Light source assembly 10; light source substrate 11; main body 111; extension portion 112; opening 113; light-emitting unit 12; first light-emitting unit 121; second light-emitting unit 122; light-emitting chip 13; red light-emitting chip 131; green light-emitting chip 132; white light-emitting chip 133; blue light-emitting chip 134; lens 14; light entrance cavity 141; light-emitting surface 142; curved surfaces 1421, 1422; lamp cup dividing line 15; driving assembly 20; shell 30; mask 40; lamp fixture 100. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of this application clearer, this application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] It should be noted here that in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present application are shown in the accompanying drawings, while other details that are not closely related to the present application are omitted.

[0033] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] Please refer to Figures 1 to 6 , which illustrate a light source assembly 10 according to a preferred embodiment of the present application. Light source assembly 10 includes a light source substrate 11 and a plurality of light-emitting units 12 disposed on said substrate 11. Light source substrate 11 has a geometric center O, and the plurality of light-emitting units 12 are symmetrically distributed about said geometric center O. This arrangement improves the uniformity of illumination brightness of a lamp 100 incorporating said light source assembly 10.

[0035] In this embodiment, the light source substrate 11 is an irregular structure, including a main body 111 and an extension portion 112 extending outward from the main body 111. The main body 111 is a polygonal structure, and the polygonal structure is similar to a rectangular structure, with an opening 113 in the center, and the opening 113 is a non-circular opening 113, which is used to provide installation space for the driving assembly 20 of the lamp 100. Optionally, the opening 113 is a quasi-rectangular structure, with two long sides, two short sides and a hypotenuse arranged between the long sides and the short sides. Extension portions 112 are provided at the four corners of the main body 111. The main body 111 and the extension portion 112 are covered with light-emitting units 12. In other embodiments, the light source substrate 11 may also be other structures, which are not limited here.

[0036] Optionally, the plurality of light-emitting units 12 are arranged in a non-circular shape on the light source substrate 11. In this embodiment, the arrangement of the light-emitting units 12 is similar to the shape of the light source substrate 11. That is, in the main body 111, the plurality of light-emitting units 12 are arranged in a non-circular shape along the opening 113. For example, the plurality of light-emitting units 12 are arranged in a quasi-rectangular shape along the opening 113. That is, the plurality of light-emitting units 12 are provided on the long side, short side, and oblique side of the opening 113, and each light-emitting unit 12 is arranged in a different direction.

[0037] Each light-emitting unit 12 includes two light-emitting chips 13 of different colors that can be independently controlled and integrated in a packaging unit. In this embodiment (as shown in Figure 4), a red light-emitting chip 131 and a green light-emitting chip 132 are provided in a square packaging unit. The red light-emitting chip 131 and the green light-emitting chip 132 are both semicircular, forming a circle as a whole, and have a lamp cup dividing line 15. In other embodiments, the packaging unit can also be circular, the light-emitting chip 13 is rectangular, and the two rectangular light-emitting chips 13 are assembled and have a lamp cup dividing line 15. This application does not limit the shape of the light-emitting chip 13 and the packaging unit. It is sufficient that two light-emitting chips 13 of different colors are assembled and have a lamp cup dividing line 15. By integrating each light-emitting unit 12 into two light-emitting chips 13 of different colors that can be independently controlled, the brightness and color of the light-emitting chips 13 of different colors can be adjusted according to actual needs, so that the light source assembly 10 can achieve a variety of lighting effects and color combinations. For example, it can simulate effects similar to the blue sky, sunset, morning light, and blue sky and white clouds. It can also control the light color and light brightness of each light-emitting chip 13 to form light and dark contrast and color changes in the lighting area, thereby enhancing the layering and three-dimensional sense of the space.

[0038] Furthermore, the placement of each light-emitting unit 12 is directional. That is, the line connecting the luminous center of each light-emitting unit 12 and the geometric center O of the light source substrate 11 is perpendicular to the lamp cup dividing line 15. This arrangement optimizes the distribution and uniformity of light, achieving uniform surface illumination even when only a single-color light-emitting chip 13 is illuminated. Furthermore, light can be more concentrated and evenly projected onto the area requiring illumination, reducing non-circular distribution and glare issues associated with the light spot, thereby improving lighting quality and comfort.

[0039] The line connecting the luminous center of the light-emitting unit 12 and the geometric center O of the light source substrate 11 is perpendicular to the lamp cup dividing line 15, which can solve the problem of non-circular light spots of two-color lamp beads. This is because the line connecting the luminous center of the light-emitting unit 12 and the geometric center O of the light source substrate 11 is set to be perpendicular to the lamp cup dividing line 15, which can make the direction and intensity of light emitted from each light-emitting unit 12 more uniform in the horizontal direction. When the light is projected onto the mask 40 of the lamp 100, the light spot is more likely to be circular or nearly circular. Moreover, the layout of the line connecting the luminous center and the geometric center O of the light source substrate 11 is perpendicular to the lamp cup dividing line 15, which also makes the light emitted in a more consistent and concentrated manner, rather than diffusing or deviating from the target lighting area. This directional control ensures that the light is more evenly distributed in the target area and reduces the change in the shape of the light spot.

[0040] The reason why the line connecting the luminous center of the light-emitting unit 12 and the geometric center O of the light source substrate 11, perpendicular to the lamp cup dividing line 15, can solve the glare problem is that the direction and angle of the light emitted by the light-emitting unit 12 are precisely controlled, avoiding direct conflict between the light and the line of sight. The light will not be directly directed at the human eye, thereby reducing the risk of glare. Moreover, the layout of the line connecting the luminous center and the geometric center O of the light source substrate 11, perpendicular to the lamp cup dividing line 15, makes the light emitted in a more concentrated and consistent manner, and it is more likely to be projected directly onto the target area rather than scattered around the lamp 100. This reduces unnecessary light reflection and scattering, thereby reducing the occurrence of glare.

[0041] Furthermore, the light rays emitted by the plurality of light-emitting units 12 intersect at the geometric center O of the light source substrate 11, so that the light rays at the geometric center O can be relatively concentrated and distributed to the entire lighting area through an appropriate diffuser or reflector, thereby achieving uniform lighting. Moreover, such an arrangement enables more light rays to be effectively utilized for lighting purposes, reduces energy loss, and improves energy efficiency. In addition, since the light rays of the light-emitting units 12 intersect at the geometric center O, the light spot in the lighting area of ​​the lamp 100 having the light source assembly 10 presents a clearer and more three-dimensional effect, thereby enhancing the sense of layering and three-dimensionality of the space and bringing a more vivid and realistic visual experience to the user.

[0042] Furthermore, in addition to the directionality of placement of each light emitting unit 12 , the arrangement of the plurality of light emitting units 12 is also regular.

[0043] The light source assembly 10 includes light-emitting units 12 of at least two colors, each containing light-emitting chips 13 of different colors. The light-emitting units 12 of at least two colors are arranged in a cyclical pattern on the light source substrate 11. Within two adjacent light-emitting units 12 of the same color, the two light-emitting chips 13 of different colors are arranged in reverse. This arrangement enables the light source assembly 10 to have a large number of light-emitting chips 13 of different colors while requiring fewer light-emitting units 12, thereby producing diverse lighting effects. For example, light-emitting units 12 or light-emitting chips 13 of different colors can be alternately illuminated to create dynamic lighting effects; all light-emitting units 12 can be illuminated simultaneously to achieve mixed-color lighting; or only light-emitting chips 13 of a single color can be illuminated to achieve monochromatic lighting. Furthermore, by arranging the two light-emitting chips 13 of different colors in reverse within two adjacent light-emitting units 12 of the same color, light is evenly distributed within the illumination area, reducing the potential for bright and dark areas in the light spot.

[0044] In this embodiment, the light source assembly 10 includes two light-emitting units 12 of two colors: a first light-emitting unit 121 and a second light-emitting unit 122. The first light-emitting unit 121 includes two light-emitting chips 13 of different colors, and the second light-emitting unit 122 includes two light-emitting chips 13 of different colors from the two light-emitting chips 13 in the first light-emitting unit 121. The first light-emitting units 121 and the second light-emitting units 122 are arranged in a circular pattern on the light source substrate 11. In two adjacent light-emitting units 12 of the same color, the two light-emitting chips 13 of different colors are arranged in reverse.

[0045] As shown in Figures 2 to 5, the first light-emitting unit 121 includes a red light-emitting chip 131 and a green light-emitting chip 132, and there is a lamp cup dividing line 15 between the red light-emitting chip 131 and the green light-emitting chip 132. The second light-emitting unit 122 includes a white light-emitting chip 133 and a blue light-emitting chip 134, and there is a lamp cup dividing line 15 between the white light-emitting chip 133 and the blue light-emitting chip 134.

[0046] The first light-emitting units 121, each having a red light-emitting chip 131 and a green light-emitting chip 132, and the second light-emitting units 122, each having a white light-emitting chip 133 and a blue light-emitting chip 134, are arranged alternately on the light source substrate 11. Of two adjacent first light-emitting units 121, the red light-emitting chip 131 of one first light-emitting unit 121 faces the opening 113, while the green light-emitting chip 132 of the other first light-emitting unit 121 faces the opening 113. Of two adjacent second light-emitting units 122, the white light-emitting chip 133 of one second light-emitting unit 122 faces the opening 113, while the blue light-emitting chip 134 of the other second light-emitting unit 122 faces the opening 113.

[0047] The multiple light-emitting units 12 are arranged in multiple circles on the light source substrate 11 to form a multi-ring light-emitting assembly. Each circle of the light-emitting assembly includes light-emitting units 12 of all colors. This arrangement ensures a more uniform light distribution from the light source assembly 10. Because each circle of the light-emitting assembly contains light-emitting units 12 of all colors, these light-emitting units 12 can work together to reduce uneven illumination intensity and color deviation.

[0048] Furthermore, the light-emitting units 12 of all colors within the same circle are arranged in a circular pattern on the light source substrate 11. Furthermore, in two adjacent light-emitting units 12 of the same color within the same circle, the light-emitting chips 13 of two different colors are arranged in reverse. This arrangement makes the light emitted by the light-emitting units 12 within the same circle more evenly distributed, thereby achieving a more uniform lighting effect.

[0049] The light-emitting units 12 in any circle of the light-emitting assembly have a different color than the light-emitting units 12 closest to them in the adjacent circle. This arrangement can reduce the overlap and mutual interference of light spots. When multiple circles of light-emitting assemblies are operating simultaneously, the light-emitting units 12 of different colors will complement each other rather than offset or overlap each other, thereby ensuring the uniformity and continuity of light within the illuminated area. When the single-color chip of the light-emitting unit 12 is illuminated, the positions of the illuminated and unilluminated areas in the light source assembly 10 are evenly staggered, so that the light of the entire light source assembly 10 is uniform.

[0050] Furthermore, when the light-emitting units 12 in any circle of the light-emitting assembly have a different color than the closest light-emitting unit 12 in the adjacent circle, the distance between that light-emitting unit 12 and the light-emitting units 12 of the same color in the adjacent circle remains the same. As shown in Figure 3, a first light-emitting unit 121 in the second circle is designated P0, while the second light-emitting unit 122 closest to P0 in the first and third circles is designated Q0. Two first light-emitting units 121 are positioned on either side of Q0, designated P1 and P2, respectively. The red and green light-emitting chips 131 and 132 in P1 and P2 are arranged in reverse. When only the red light-emitting chip 131 is illuminated, the red light-emitting chip 131 in P0 faces away from the opening 113, while the red light-emitting chip 131 in P1 faces toward the opening 113. This allows the light emitted by P0 and P1 to merge into a complete light-emitting unit 12, resulting in more uniform light output from the light source assembly 10.

[0051] Furthermore, the light source assembly 10 further includes a plurality of lenses 14, which are arranged one-to-one with the light emitting units 12. This arrangement allows the light emitted by the light emitting units 12 to be concentrated at the center of the lens 14 and then emitted outward, thereby avoiding interference between the light rays.

[0052] Furthermore, the lens 14 includes a light entrance cavity 141 and a light exit surface 142 that are oppositely disposed. The light-emitting unit 12 is disposed in the light entrance cavity 141. The light exit surface 142 includes two outer curved surfaces 1421 and 1422 that are symmetrically disposed along the lamp cup dividing line 15. Both outer curved surfaces 1421 and 1422 are convex toward a side away from the light-emitting unit 12. This arrangement ensures that, regardless of whether only a single-color light-emitting chip 13 or both color light-emitting chips 13 are illuminated, the light emitted by the light-emitting unit 12 can be guided and concentrated to the center of the lens 14. It is then diffused and distributed outwardly through the two outer curved surfaces 1421 and 1422 that are symmetrically disposed along the lamp cup dividing line 15, making the emitted light more uniform.

[0053] Please refer to Figure 7, which shows a lamp 100 in accordance with a preferred embodiment of the present application. The lamp 100 includes a light source assembly 10, a driving assembly 20, a shell 30, and a mask 40. A mounting position for mounting the light source assembly 10 is provided on the bottom plate of the shell 30. The light source assembly 10 is arranged on the mounting position and is electrically connected to the driving assembly 20. The shell 30 and the mask 40 are fixedly connected, and the light emitted by the light source assembly 10 is emitted outward through the mask 40. Preferably, the lamp 100 is a direct-type surface light source and has a geometric center. The geometric center of the lamp 100 coincides with the geometric center O of the light source substrate 11. This arrangement ensures that after the light is emitted from the light-emitting unit 12, it can be emitted from the lamp 100 in the most direct and efficient manner, reducing the reflection and scattering of light inside the lamp 100, improving the utilization rate of light and the uniformity of lighting, and thus enhancing the lighting effect.

[0054] Please refer to Figures 8 and 9. In Figure 8, the existing dual-color LED lamp beads have an asymmetrical light spot when illuminating only a single-color chip, for example, only the red chip or only the green chip. In contrast, in Figure 9, the present application, by configuring the arrangement shape, arrangement direction, and arrangement position of the light-emitting units 12 on the light source substrate 11, can achieve uniform surface illumination when the lamp 100 only illuminates the single-color light-emitting chip 13 of the light-emitting unit 12.

[0055] In summary, the light source assembly 10 of the present application integrates each light-emitting unit 12 into two light-emitting chips 13 of different colors that can be independently controlled. The brightness and color of the light-emitting chips 13 of different colors can be adjusted according to actual needs, so that the light source assembly 10 can achieve a variety of lighting effects and color combinations. By setting the arrangement of multiple light-emitting units 12 on the light source substrate 11, that is, setting the line connecting the light-emitting center of each light-emitting unit 12 and the geometric center O of the light source substrate 11 to be perpendicular to the lamp cup dividing line 15, the distribution and uniformity of light can be optimized. Even when only a single-color light-emitting chip 13 is lit, uniform surface illumination can be achieved. In addition, light can be projected more concentratedly and evenly to the area that needs to be illuminated, reducing the non-circular distribution and glare problems of the light spot, and improving the lighting quality and comfort.

[0056] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A light source assembly, used in a lamp, wherein: The light source assembly comprises a light source substrate (11) and a plurality of light-emitting units (12) arranged on the light source substrate (11), the light source substrate (11) having a geometric center (O), each of the light-emitting units (12) comprising two light-emitting chips (13) of different colors that are integrated in a packaging unit and can be independently controlled, a lamp cup dividing line (15) being provided between the two light-emitting chips (13) of different colors, and each of the light-emitting units (12) having a light-emitting center, and a line connecting the light-emitting center of the light-emitting unit (12) and the geometric center (O) of the light source substrate (11) being perpendicular to the lamp cup dividing line (15).

2. The light source assembly according to claim 1, wherein The light source assembly comprises light-emitting units (12) of at least two colors, wherein the colors of the light-emitting chips (13) in the light-emitting units (12) of at least two colors are different, wherein the light-emitting units (12) of at least two colors are sequentially arranged in a circular pattern on the light source substrate (11), and in two adjacent light-emitting units (12) of the same color, the light-emitting chips (13) of two different colors are arranged in reverse.

3. The light source assembly according to claim 2, wherein: The plurality of light-emitting units (12) are arranged in a multi-circle manner on the light source substrate (11) to form a multi-circle light-emitting assembly arranged in a surrounding manner, and each circle of the light-emitting assembly includes the light-emitting units (12) of all colors.

4. The light source assembly according to claim 3, wherein: The light-emitting units (12) of all colors in the same circle are arranged in a circular pattern on the light source substrate (11), and in two adjacent light-emitting units (12) of the same color in the same circle, the light-emitting chips (13) of two different colors are arranged in reverse.

5. The light source assembly according to claim 3, wherein: The light-emitting units (12) in any circle of the light-emitting components have different colors from the light-emitting units (12) closest to them in an adjacent circle. The light source assembly according to claim 1 , wherein: Light rays emitted by the plurality of light-emitting units (12) intersect at the geometric center (O) of the light source substrate (11).

7. The light source assembly according to claim 1, wherein: The light source assembly further comprises a plurality of lenses (14), and the lenses (14) are arranged in a one-to-one correspondence with the light-emitting units (12).

8. The light source assembly according to claim 7, wherein: The lens (14) comprises a light entrance cavity (141) and a light exit surface (142) which are arranged opposite to each other; the light emitting unit (12) is arranged in the light entrance cavity (141); the light exit surface (142) comprises two outer arc surfaces (1421, 1422) which are symmetrically arranged along the lamp cup dividing line (15); and the two outer arc surfaces (1421, 1422) are both convex toward a side away from the light emitting unit (12).

9. The light source assembly according to claim 1, wherein: The arrangement shape of the plurality of light-emitting units (12) on the light source substrate (11) is non-circular.

10. A lamp, wherein: The light source assembly comprises the light source assembly according to any one of claims 1 to 9.

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