Light source assembly and lamp

Abstract

The utility model provides a light source assembly and a lamp, the light source assembly comprises a light source substrate and a plurality of light emitting units arranged on the light source substrate, and the light source substrate is provided with a geometric center. Each light-emitting unit comprises two light-emitting chips which are integrated in a packaging unit, have different colors and can be independently controlled, a lamp cup boundary is arranged between the two light-emitting chips with different colors, and each light-emitting unit is provided with a light-emitting center; the connecting line of the light-emitting center of the light-emitting unit and the geometric center of the light source substrate is perpendicular to the lamp cup boundary. According to the light source assembly, the problem of non-circular light spots of an existing double-color LED can be solved, and the lighting effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of lighting, in particular to a light source component and a lamp. Background Art

[0002] In the field of lighting technology, two-color LED lamps are widely used due to their unique light color adjustment capabilities. Two-color LEDs usually contain two LED chips of different colors. By controlling the on and off and brightness of each chip, multiple colors can be mixed and adjusted. However, there is a significant problem when using existing two-color LEDs with lenses: when only a single-color chip is lit, the distribution of the light spot often appears non-circular, similar to a semicircular light spot.

[0003] This non-circular light spot causes serious uneven brightness distribution of the lamp. In lighting applications, uniform brightness distribution is crucial, which not only provides a comfortable visual environment, but also ensures that the illuminated object is evenly illuminated. However, due to the non-circular light spot problem of existing two-color LEDs, the lighting effect of the lamp is seriously affected and cannot meet the user's demand for uniform brightness.

[0004] In view of this, it is indeed necessary to provide a light source assembly and a lamp to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a light source assembly which can realize uniform surface light emission when only a single-color light-emitting chip is lit.

[0006] To achieve the above-mentioned purpose, the utility model provides a light source component, which is applied to a lamp, wherein the light source component includes a light source substrate and a plurality of light-emitting units arranged on the light source substrate, the light source substrate has a geometric center, each of the light-emitting units includes two light-emitting chips of different colors integrated in a packaging unit and can be independently controlled, a lamp cup dividing line is provided between the two light-emitting chips of different colors, and each of the light-emitting units has a light-emitting center, and a line connecting the light-emitting center of the light-emitting unit and the geometric center of the light source substrate is perpendicular to the lamp cup dividing line.

[0007] As a further improvement of the present invention, 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.

[0008] As a further improvement of the present invention, a plurality of the light-emitting units are arranged in a plurality of circles on the light source substrate to form a plurality of circles of light-emitting components arranged in a surrounding manner, and each circle of the light-emitting components includes the light-emitting units of all colors.

[0009] As a further improvement of the present invention, the light-emitting units of all colors in the same circle are arranged in a circular pattern on the light source substrate, 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.

[0010] As a further improvement of the present invention, 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.

[0011] As a further improvement of the present invention, the light rays emitted by the plurality of light emitting units intersect at the geometric center of the light source substrate.

[0012] As a further improvement of the present invention, 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.

[0013] As a further improvement of the utility model, the lens includes a light incident cavity and a light emitting surface which are relatively arranged, the light emitting unit is arranged in the light incident cavity, and the light emitting surface includes two outer arc surfaces which are symmetrically arranged along the dividing line of the lamp cup, and both of the two outer arc surfaces are convex to the side away from the light emitting unit.

[0014] As a further improvement of the present invention, the arrangement shape of the plurality of light-emitting units on the light source substrate is non-circular.

[0015] Another object of the present invention is to provide a lamp including the light source assembly.

[0016] In order to achieve the above object, the utility model provides a lamp, including the above light source assembly.

[0017] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0018] The light source assembly of the utility model 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, so that the light source assembly can achieve a variety of lighting effects and color combinations.

[0019] The light source assembly of the utility model optimizes the distribution and uniformity of light by setting the line connecting the light emitting center of each light emitting unit and the geometric center of the light source substrate to be perpendicular to the lamp cup dividing line. Even when only a single-color light emitting chip is lit, uniform surface light emission 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

[0020] Figure 1 It is a structural schematic diagram of a light source assembly according to an embodiment of the utility model.

[0021] Figure 2 yes Figure 1 The overall layout of the light source assembly without the lens is shown.

[0022] Figure 3 yes Figure 2 A partial enlarged view of the light source assembly is shown.

[0023] Figure 4 yes Figure 3 A schematic structural diagram of the first light-emitting unit in the light source assembly is shown.

[0024] Figure 5 yes Figure 3 A schematic structural diagram of the second light-emitting unit in the light source assembly is shown.

[0025] Figure 6 yes Figure 1 A cross-sectional view of a light emitting unit covering a lens in a light source assembly is shown.

[0026] Figure 7 It is a structural explosion diagram of a lamp according to an embodiment of the utility model.

[0027] Figure 8 This is a lighting effect diagram of a two-color LED single light-emitting chip being lit in the prior art.

[0028] Fig. 9 It is a lighting effect diagram of a single light-emitting chip in the lamp of the utility model being lit.

[0029] Description of reference numerals:

[0030] Light source assembly 10; light source substrate 11; main body 111; extension 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 exit surface 142; arc-shaped surfaces 1421, 1422; lamp cup dividing line 15;

[0031] Driving assembly 20; housing 30; mask 40; lamp 100. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] It should be noted here that in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0034] 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 other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] See also Figures 1 to 6 As shown, a light source assembly 10 according to a preferred embodiment of the present utility model is shown. The light source assembly 10 includes 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 has a geometric center O, and the plurality of light emitting units 12 are symmetrically distributed along the geometric center O, so as to improve the uniformity of the illumination brightness of the lamp 100 having the light source assembly 10.

[0036] In the present 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 an 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 arranged 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.

[0037] Optionally, the arrangement shape of the plurality of light emitting units 12 on the light source substrate 11 is non-circular. In this embodiment, the arrangement shape of the light emitting units 12 is similar to the shape of the light source substrate 11. That is, at 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, a plurality of light emitting units 12 are arranged on the long side, the short side and the oblique side of the opening 113, and the arrangement direction of each light emitting unit 12 is different.

[0038] Each light-emitting unit 12 includes two light-emitting chips 13 of different colors that can be independently controlled and integrated into one packaging unit. Figure 4 As shown in the figure, a red light-emitting chip 131 and a green light-emitting chip 132 are arranged in a square packaging unit, and the red light-emitting chip 131 and the green light-emitting chip 132 are both semicircular, and the whole is formed into a circle, and has a lamp cup dividing line 15. In other embodiments, the packaging unit can also be circular, the light-emitting chip 13 is rectangular, and two rectangular light-emitting chips 13 are assembled, and have a lamp cup dividing line 15. The utility model does not limit the shape of the light-emitting chip 13 and the packaging unit, as long as 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 blue sky, sunset, morning light and blue sky and white clouds, and it can also control the light color and light brightness of each light-emitting chip 13, so as to form light and dark contrast and color changes in the lighting area, and enhance the layering and three-dimensional sense of space.

[0039] Furthermore, each light-emitting unit 12 is placed in a directional manner. That is, the line connecting the light-emitting 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. This arrangement can optimize the distribution and uniformity of light, and even surface light emission can be achieved when only the monochromatic light-emitting chip 13 is lit. In addition, light can be projected more concentratedly and evenly to the area that needs to be illuminated, reducing the non-circular distribution of light spots and glare problems, and improving lighting quality and comfort.

[0040] The line connecting the luminous center of the luminous 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 luminous 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 luminous 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 allows the light to be emitted in a more consistent and concentrated manner, rather than diffused or deviated from the target lighting area. This directional control ensures that the light is more evenly distributed in the target area and reduces changes in the shape of the light spot.

[0041] The reason why the glare problem can be solved by the line connecting the luminous center of the luminous unit 12 and the geometric center O of the light source substrate 11 being perpendicular to the lamp cup dividing line 15 is that the direction and angle of the light emitted by the luminous unit 12 are precisely controlled, avoiding direct conflict between the light and the line of sight, and the light will not be directly directed to the eyes of the person, 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 being perpendicular to the lamp cup dividing line 15 allows the light to be emitted in a more concentrated and consistent manner, and they are 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.

[0042] 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 can be distributed to the entire lighting area through a suitable 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 three-dimensional effect, enhancing the sense of hierarchy and three-dimensionality of the space, and bringing a more vivid and realistic visual experience to the user.

[0043] 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.

[0044] The light source assembly 10 includes at least two colors of light-emitting units 12, and the colors of the light-emitting chips 13 in the light-emitting units 12 of at least two colors are different. The light-emitting units 12 of at least two colors are arranged in a circular manner on the light source substrate 11, and the two light-emitting chips 13 of different colors in two adjacent light-emitting units 12 of the same color are arranged in reverse. In this way, the light source assembly 10 can have many light-emitting chips 13 of different colors under the premise of having fewer light-emitting units 12, so as to produce different lighting effects. For example, light-emitting units 12 or light-emitting chips 13 of different colors can be alternately lit to create a dynamic lighting effect; or, all light-emitting units 12 can be lit at the same time to achieve mixed color lighting, or, by lighting only a single-color light-emitting chip 13, a single-color lighting can be achieved. In addition, by arranging the two light-emitting chips 13 of different colors in reverse in two adjacent light-emitting units 12 of the same color, the light in the lighting area can be evenly distributed, reducing the bright and dark areas that may appear in the light spot.

[0045] In this embodiment, the light source assembly 10 includes two light-emitting units 12 of two colors, namely 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 other 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 unit 121 and the second light-emitting unit 122 are sequentially 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 upside down.

[0046] like Figures 2 to 5 As shown, the first light-emitting unit 121 includes a red light-emitting chip 131 and a green light-emitting chip 132, with a lamp cup dividing line 15 between the red light-emitting chip 131 and the green light-emitting chip 132, and the second light-emitting unit 122 includes a white light-emitting chip 133 and a blue light-emitting chip 134, with a lamp cup dividing line 15 between the white light-emitting chip 133 and the blue light-emitting chip 134.

[0047] The first light-emitting units 121 having red light-emitting chips 131 and green light-emitting chips 132 and the second light-emitting units 122 having white light-emitting chips 133 and blue light-emitting chips 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, and 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, and the blue light-emitting chip 134 of the other second light-emitting unit 122 faces the opening 113.

[0048] The plurality of light-emitting units 12 are arranged in a plurality of circles on the light source substrate 11 to form a plurality of light-emitting components arranged in a surrounding manner, and each circle of the light-emitting components includes the light-emitting units 12 of all colors. Such an arrangement can make the light distribution of the light source component 10 more uniform. Since each circle of the light-emitting components includes the light-emitting units 12 of all colors, these light-emitting units 12 can work together to reduce the unevenness of the light intensity and the deviation of the color.

[0049] Furthermore, 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 the light emitting chips 13 of two different colors in two adjacent light emitting units 12 of the same color in the same circle are arranged upside down. This arrangement makes the light emitted by the light emitting units 12 in the same circle more evenly distributed, so that the light emitting effect is more uniform.

[0050] The light-emitting units 12 in any circle of the light-emitting components are different in color from the light-emitting units 12 that are 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 components work simultaneously, the light-emitting units 12 of different colors will complement each other instead of offsetting or overlapping each other, thereby ensuring the uniformity and continuity of light in the illuminated area. When the chip of a single color of the light-emitting unit 12 is lit, the positions of the lit areas and the unlit areas in the light source assembly 10 are evenly staggered, so that the light of the entire light source assembly 10 is uniform.

[0051] In addition, when the light-emitting unit 12 in any circle of the light-emitting assembly has a different color from the light-emitting unit 12 closest to it in the adjacent circle, the distance between the light-emitting unit 12 and the light-emitting unit 12 of the same color in the adjacent circle is the same. Figure 3As shown, a first light-emitting unit 121 in the second circle is defined as P0, and the second light-emitting unit 122, defined as Q0, is closest to P0 in the first circle and the third circle. Two first light-emitting units 121 are respectively arranged on both sides of Q0, which are defined as P1 and P2 respectively. Among them, the red light-emitting chip 131 and the green light-emitting chip 132 in P1 and P2 are arranged upside down. When only the red light-emitting chip 131 is lit, the red light-emitting chip 131 in P0 is facing away from the opening 113, while the red light-emitting chip 131 in P1 is facing the opening 113. In this way, the light emitted by P0 and P1 can be merged into a complete light-emitting unit 12, thereby making the light output of the light source assembly 10 more uniform.

[0052] Furthermore, the light source assembly 10 further includes a plurality of lenses 14, and the lenses 14 are arranged one by one corresponding to the light emitting units 12. Such an arrangement allows the light emitted by the light emitting units 12 to be concentrated to the center of the lens 14 and then emitted outward, thereby avoiding interference between the light rays.

[0053] Furthermore, the lens 14 includes 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, and the light exit surface 142 includes two outer arc surfaces 1421, 1422 which are arranged symmetrically along the lamp cup dividing line 15, and the two outer arc surfaces 1421, 1422 are both convex to the side away from the light emitting unit 12. With this arrangement, whether only the light emitting chip 13 of a single color is lit or the light emitting chips 13 of two colors are lit, the light emitted by the light emitting unit 12 can be guided and concentrated to the central part of the lens 14, and diffused and distributed outwardly through the two outer arc surfaces 1421, 1422 which are arranged symmetrically along the lamp cup dividing line 15, so that the emitted light can be more uniform.

[0054] See also Figure 7 As shown, a lamp 100 in accordance with a preferred embodiment of the utility model is shown. 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, and 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-down surface light source and has a geometric center, and the geometric center of the lamp 100 coincides with the geometric center O of the light source substrate 11. Such a configuration can ensure 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 the light inside the lamp 100, improving the utilization rate of the light and the uniformity of the lighting, thereby enhancing the lighting effect.

[0055] See also Figure 8and Fig. 9 As shown. Figure 8 In the existing two-color LED lamp beads, when only a single-color chip is lit, for example, only a red chip is lit, or only a green chip is lit, its light spot is set asymmetrically. Fig. 9 In the present invention, by setting the arrangement shape, arrangement direction, and arrangement position of the light-emitting unit 12 on the light source substrate 11, when the lamp 100 only lights up the monochrome light-emitting chip 13 of the light-emitting unit 12, the lamp 100 can achieve uniform surface light emission.

[0056] In summary, the light source assembly 10 of the utility model 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, and even surface light emission can be achieved when only a single-color light-emitting chip 13 is lit, and light can be projected to the area that needs to be illuminated more concentratedly and evenly, reducing the non-circular distribution and glare problems of the light spot, and improving the lighting quality and comfort.

[0057] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A light source assembly, used in a lamp, characterized in that: 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) has a geometric center (O); each of the light emitting units (12) comprises two light emitting chips (13) of different colors which are integrated in a packaging unit and can be independently controlled; a lamp cup dividing line (15) is provided between the two light emitting chips (13) of different colors; and each of the light emitting units (12) has a light emitting center; a line connecting the light emitting 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).

2. The light source assembly according to claim 1, characterized in that: The light source assembly comprises light-emitting units (12) of at least two colors, the light-emitting chips (13) in the light-emitting units (12) of at least two colors are of different colors, 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, characterized in that: The plurality of light-emitting units (12) are arranged in a plurality of circles on the light source substrate (11) to form a plurality of circles of light-emitting components arranged in a surrounding manner, and each circle of the light-emitting components includes light-emitting units (12) of all colors.

4. The light source assembly according to claim 3, characterized in that: The light-emitting units (12) of all colors in the same circle are arranged in a circular pattern on the light source substrate (11) in sequence, 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, characterized in that: 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.

6. The light source assembly according to claim 1, characterized in that: 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, characterized in that: The light source assembly further comprises a plurality of lenses (14), wherein 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, characterized in that: 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); the two outer arc surfaces (1421, 1422) are both convex to a side away from the light emitting unit (12).

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

10. A lamp, characterized in that: The light source assembly comprises any one of claims 1 to 9.

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