CN213040507U - Lamp set - Google Patents

Abstract

This application is applicable to lighting device technical field, provides a lamps and lanterns, includes: a substrate; the first light-emitting sources are annularly arranged on one surface of the substrate, and each first light-emitting source comprises at least two light-emitting elements emitting different colors; the second light-emitting sources are annularly arranged on the same surface of the substrate and the first light-emitting sources, and each second light-emitting source comprises at least two light-emitting elements emitting different colors; the plurality of first light-emitting sources and the plurality of second light-emitting sources are arranged at intervals, wherein the color emitted by each light-emitting element in the plurality of first light-emitting sources is different from the color emitted by each light-emitting element in the plurality of second light-emitting sources. The number of the light-emitting elements on the substrate is more than four, and each light-emitting element can output at least four colors, so that the lamp has a larger color gamut and good spectral continuity.

Description

Lamp set

Technical Field

The application relates to the technical field of lighting devices, in particular to a lamp.

Background

With the continuous maturity and development of lighting technology, Light Emitting Diode (LED) Light sources are widely used in the fields of lighting, industry and the like, and not only have the advantages of small volume, low heat productivity, energy saving and the like, but also can normally work in various working environments, and have a wide application range. The light emitting principle of the LED is that the free moving electrons and holes are recombined to emit light under forward voltage, which sets the LED light emitting source to have strong monochromaticity.

When the LED luminous source is designed and manufactured, multicolor light mixing is carried out by utilizing the related principle of colorimetry, or fluorescent paint is coated, so that the illumination effect close to white light is achieved. In the traditional light emitting source and lamp adopting multi-color LED mixed light, the tricolor LED is usually adopted as the light emitting source, the fitting degree of the tricolor LED to sunlight is not good enough, the color gamut area is small, and the shooting requirement in multiple scenes cannot be met.

SUMMERY OF THE UTILITY MODEL

The application aims to solve the technical problems that the fitting degree of a traditional LED light source to sunlight is poor and the color gamut is narrow.

The present application is thus implemented, a luminaire, comprising: a substrate; a plurality of first light-emitting sources annularly arranged on one surface of the substrate, each first light-emitting source including at least two light-emitting elements emitting different colors; and a plurality of second light-emitting sources annularly arranged on the same surface of the substrate as the plurality of first light-emitting sources (22), each second light-emitting source comprising at least two light-emitting elements emitting different colors; the plurality of first light-emitting sources and the plurality of second light-emitting sources are arranged at intervals, wherein the color emitted by each light-emitting element in the plurality of first light-emitting sources is different from the color emitted by each light-emitting element in the plurality of second light-emitting sources.

In one embodiment of the present application, the first light-emitting source includes two or more monochromatic light-emitting elements and/or white light-emitting elements emitting different peak wavelengths, and the second light-emitting source includes two or more monochromatic light-emitting elements and/or white light-emitting elements emitting different peak wavelengths. The peak wavelength of each monochromatic light emitting element of the first light emitting source is different from the peak wavelength of each monochromatic light emitting element of the second light emitting source, and the color temperature of each white light emitting element of the first light emitting source is different from the color temperature of each white light emitting element of the second light emitting source.

In one embodiment of the present application, the number of the light emitting elements of the first light emitting source having different peak wavelengths is four, the number of the light emitting elements of the second light emitting source having different peak wavelengths is four, and the number of the visible light band wavelengths that can be output by each of the light emitting elements of the first light emitting source and the second light emitting source is eight.

In one embodiment of the present application, the light emitting elements include a first light emitting element with a wavelength in the range of 620-625nm, a second light emitting element with a wavelength in the range of 525-530nm, a third light emitting element with a wavelength in the range of 589-595nm, a fourth light emitting element with a wavelength in the range of 560-565nm, a fifth light emitting element with a wavelength in the range of 390-395nm, a sixth light emitting element with a wavelength in the range of 490-495nm, a seventh light emitting element with a wavelength in the range of 510-515nm, and an eighth light emitting element with a wavelength in the range of 460-465 nm;

the first light emitting source includes four of the first light emitting element, the second light emitting element, the third light emitting element, the fourth light emitting element, the fifth light emitting element, the sixth light emitting element, the seventh light emitting element, and the eighth light emitting element; the second light emission source includes another four of the first light emission element, the second light emission element, the third light emission element, the fourth light emission element, the fifth light emission element, the sixth light emission element, the seventh light emission element, and the eighth light emission element.

In one embodiment of the present application, the light emitting elements include at least one white light emitting element for increasing the illuminance of the light of the lamp and a plurality of single color light emitting elements for adjusting the color temperature of the light of the lamp.

In one embodiment of the present application, the first light emitting source further includes a first package, and each of the light emitting elements of the first light emitting source is disposed in the first package; the second light emitting source further comprises a second package body, and each light emitting element of the second light emitting source is arranged in the second package body; the first packaging body and the second packaging body are transparent packaging bodies.

In one embodiment of the present application, the surfaces of the first package body and the second package body away from the substrate are planar; or one surfaces, far away from the substrate, of the first packaging body and the second packaging body are compound eye surfaces.

In an embodiment of the present application, the lamp includes a plurality of the first light-emitting sources and a plurality of the second light-emitting sources, a first electrical connection line for connecting each of the first light-emitting sources and a second electrical connection line for connecting each of the second light-emitting sources are disposed on the substrate, and the second electrical connection line is disposed to avoid the first electrical connection line.

In one embodiment of the present application, the first light-emitting source is connected to form a first light-emitting ring band, the second light-emitting source is connected to form a second light-emitting ring band, and the first light-emitting ring band and the second light-emitting ring band are arranged at intervals from inside to outside; in one embodiment of the present application, the first light emitting zone and the second light emitting zone are both circular zones; the first light-emitting ring zone has the number of the first light-emitting sources proportional to the diameter of the first light-emitting ring zone, and the second light-emitting ring zone has the number of the second light-emitting sources proportional to the diameter of the second light-emitting ring zone.

In one embodiment of the present application, a side of the substrate on which the first and second light-emitting sources are disposed is provided with a white coating layer; or one surface of the substrate, which is provided with the first luminous source and the second luminous source, is provided with a black coating layer.

In one embodiment of the present application, the luminaire further includes an optical accessory located on the light emitting side of the first and second light emitting sources, the optical accessory being capable of mixing the color lights of the light emitting elements; the optical accessory includes at least one of a fresnel lens, frosted glass, opal glass, a diffuser, and a soft light box.

The lamp provided by any embodiment of the application at least has the following beneficial effects:

the first light-emitting source and the second light-emitting source respectively comprise two or more light-emitting elements, so that the number of the light-emitting elements on the substrate is more than four, each light-emitting element can output at least four wavelengths of visible light bands, the colored light corresponding to the four visible light wavelengths can respectively correspond to one point on a CIE chromaticity diagram according to the light-emitting intensity of the colored light, and the region formed by the four points corresponding to the four visible light wavelengths in a surrounding mode is the color gamut of the lamp.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lamp provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a first light-emitting source according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a second light-emitting source according to an embodiment of the present application;

FIG. 4 is a CIE chromaticity diagram of the illumination light of a luminaire provided by one embodiment of the present application;

fig. 5 is a schematic diagram of a spectral range of each light-emitting element provided by an embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

1-a substrate; 100-color gamut; 20-a light emitting element; 201-a first light emitting element; 202-a second light emitting element; 203-third light emitting element; 204-a fourth light emitting element; 205-fifth light emitting element; 206-sixth light emitting element; 207-seventh light emitting element; 208-eighth light emitting element; 21-a first light emitting source; 211-a first package; 22-a second light emitting source; 221-a second package; and 3, supporting.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 to 4, an embodiment of the present application provides a lamp, including: a substrate 1; the substrate 1 may be made of ceramic or metal, although other materials with high thermal conductivity are also possible. The light emitting device comprises a plurality of first light emitting sources 21, wherein the plurality of first light emitting sources 21 are annularly arranged on one surface of a substrate 1, the plurality of first light emitting sources 21 can be uniformly arranged at intervals, and each first light emitting source 21 comprises at least two light emitting elements 20 emitting different colors. The plurality of second light-emitting sources 22 may be uniformly spaced apart from each other, the plurality of second light-emitting sources 22 are annularly disposed on the surface of the substrate 1 on which the first light-emitting source 21 is disposed, and the second light-emitting sources 22 include two or more light-emitting elements 20 emitting different colors. The first light-emitting source 21 and the second light-emitting source 22 are spaced apart from each other, and it is understood that the first light-emitting source 21 and the second light-emitting source 22 form a ring shape spaced apart from each other, and the ring shape may be a circular shape, a substantially circular shape, a regular polygon shape, or the like, so as to facilitate the light convergence and the later light mixing. Wherein each light emitting element 20 in the first light emitting source 21 emits a color different from the color emitted by each light emitting element 20 in the second light emitting source 22. It is understood that the color herein may be the visual perception of the normal human eye, and specifically may be red, green, blue, white, lemon, purple, cyan, amber, royal blue, etc., and it is understood that the white color may be cool white, normal white, neutral white, warm white, etc. having different color temperatures.

It should be understood that when a higher power illumination requirement is required, the annular first light-emitting sources 21 and the annular second light-emitting sources 22 are arranged in an inner and outer ring alternately, and the specific number of the rings can be set as required.

The lamp provided by the embodiment at least has the following beneficial technical effects:

each of the first light-emitting sources 21 and each of the second light-emitting sources 22 respectively include two or more light-emitting elements 20, so that the number of the light-emitting elements 20 on the substrate 1 is more than four, and each of the light-emitting elements 20 can output light of at least four colors, for example, including but not limited to white light with wavelengths in four visible light bands or different color temperatures, although the combination thereof can synthesize light of more other colors, the four colors emitted by the light-emitting elements 20 respectively correspond to one point on a CIE chromaticity diagram, and the area formed by the four points by enclosure is the color gamut of the lamp.

Referring to fig. 4, the CIE chromaticity diagram of the present application refers to a chromaticity diagram used under the chromaticity standard established by the Commission Internationale de l' Eclairage. Specifically, according to the wavelength and intensity corresponding to the light of each wavelength band output by the lamp, a point corresponding to the wavelength and intensity can be found in the CIE chromaticity diagram, and the area of a polygon enclosed by the points corresponding to the light of each wavelength band output by the lamp is larger, so that the light finally output by the lamp is closer to white light.

As a specific aspect of this embodiment, the color gamut 100 in the CIE chromaticity diagram according to the light output by the luminaire can enclose the area corresponding to the standard white light in the CIE chromaticity diagram. In this way, the light of at least four visible light bands output by each light emitting element 20 can realize a lighting effect highly close to white light after further mixing. More specifically, the lamp can at least output a red color light with a wavelength of 620-625nm, a green color light with a wavelength of 525-530nm, a blue color light with a wavelength of 460-465nm, and a color light with other colors, wherein the intensities of the red color light, the green color light and the blue color light are the same.

Referring to fig. 1 to fig. 3, as a specific solution of the present embodiment, each light emitting element 20 may be mounted on the substrate 1 through the bracket 3, which is favorable for the arrangement of the electrical circuit of the lamp and the improvement of the heat dissipation efficiency of each light emitting element 20.

In one embodiment of the present application, the first light-emitting source 21 includes two or more monochromatic light-emitting elements and/or white light-emitting elements emitting different peak wavelengths, and the second light-emitting source 22 includes two or more monochromatic light-emitting elements and/or white light-emitting elements emitting different peak wavelengths; the peak wavelength of each monochromatic light emitting element of the first light emitting source 21 is different from the peak wavelength of each monochromatic light emitting element of the second light emitting source 22, and the color temperature of each white light emitting element of the first light emitting source 21 is different from the color temperature of each white light emitting element of the second light emitting source 22.

For example, as a specific scheme of the embodiment, the first light-emitting source 21 and the second light-emitting source 22 both include three monochromatic light-emitting elements and one white light-emitting element, wherein the three monochromatic light-emitting elements of the first light-emitting source 21 all emit light with a color different from the color of the light emitted by the three monochromatic light-emitting elements of the second light-emitting source 22. The color temperature of the white light of the first light emitting source 21 is different from the color temperature of the white light of the second light emitting source 22. For example, the warm white color temperature may be 2700K-3300K, the neutral white color temperature may be 4000K-5000K, the positive white color temperature may be 5500K-6500K, and the cold white color temperature may be greater than 7000K. In this way, the basic color temperature of the lamp can be controlled by controlling the light emitting power of each white light emitting element, and further, the basic color temperature of the lamp can be finely adjusted by controlling the light emitting power of each light emitting element in the first light emitting source 21 and each light emitting element in the second light emitting source 22.

The above specific solution is only used for explaining the specific principle and beneficial effect of the lamp provided by the present embodiment, and is only one of the alternatives of the present embodiment; in this embodiment, it is also optional that the first light-emitting source 21 includes two monochromatic light-emitting elements and two white light-emitting elements, the second light-emitting source 22 includes two monochromatic light-emitting elements and two white light-emitting elements, color temperatures of the white light-emitting elements of the first light-emitting source 21 and the second light-emitting source 22 are different from each other, and the like, all of which can achieve the above advantageous technical effects.

Referring to fig. 2 and 3, in an embodiment of the present application, the number of the light emitting elements 20 with different peak wavelengths of the first light emitting source 21 is four, the number of the light emitting elements 20 with different peak wavelengths of the second light emitting source 22 is four, and the number of the visible light band wavelengths that can be output by each of the light emitting elements 20 of the first light emitting source 21 and the second light emitting source 22 is eight.

The lamp can output eight bands of color light, has a color gamut 100 with a larger coverage area, and can output illumination light closer to white light or sunlight. As a specific solution of this embodiment, the first light-emitting source 21 and the second light-emitting source 22 can output color lights in eight visible light bands, the outputs of the color lights are connected as points to form an exemplary color gamut 100 (where the points of one light band are defined in the area 100), and a color gamut area is formed in the CIE chromaticity diagram as shown in fig. 4, it can be understood that the area of the color gamut 100 occupies at least 85% of the total area of the chromaticity diagram. It should be noted here that the color gamut 100 in fig. 4 visually appears to be a heptagon because the point corresponding to one of the light-emitting elements 20 falls inside the color gamut formed by connecting the points corresponding to the other seven light-emitting elements 20.

Referring to fig. 2, fig. 3 and fig. 5, in an embodiment of the present application, the light emitting device 20 includes a first light emitting device 201 having a wavelength in the range of 620-625nm, a second light emitting device 202 having a wavelength in the range of 525-530nm, a third light emitting device 203 having a wavelength in the range of 589-595nm, a fourth light emitting device 204 having a wavelength in the range of 560-565nm, a fifth light emitting device 205 having a wavelength in the range of 390-395nm, a sixth light emitting device 206 having a wavelength in the range of 490-495nm, a seventh light emitting device 207 having a wavelength in the range of 510-515nm, and an eighth light emitting device 208 having a wavelength in the range of 460-465 nm.

The first light-emitting source 21 includes four of a first light-emitting element 201, a second light-emitting element 202, a third light-emitting element 203, a fourth light-emitting element 204, a fifth light-emitting element 205, a sixth light-emitting element 206, a seventh light-emitting element 207, and an eighth light-emitting element 208; the second light-emitting source 22 includes the other four of the first light-emitting element 201, the second light-emitting element 202, the third light-emitting element 203, the fourth light-emitting element 204, the fifth light-emitting element 205, the sixth light-emitting element 206, the seventh light-emitting element 207, and the eighth light-emitting element 208.

Referring to fig. 4, an octagonal color gamut 100 in the drawing is the color gamut 100 of the lamp provided in this embodiment, and it can be seen that the area of the color gamut 100 of the lamp provided in this embodiment occupies at least 85% of the total area of the chromaticity diagram, so that more color temperature and color mixing can be realized, and the lighting effect is highly close to white light. In addition, referring to fig. 5, the first light emitting element 201, the second light emitting element 202, the third light emitting element 203, the fourth light emitting element 204, the fifth light emitting element 205, the sixth light emitting element 206, the seventh light emitting element 207 and the eighth light emitting element 208 correspond to different wavelength ranges respectively, and the wavelength ranges are evenly distributed in the wavelength range of the visible light, so that the first light emitting group 21 and the second light emitting group 22 which are arranged in this way not only have high color rendering property, and can obtain an illumination effect of very white light, but also can obviously improve the spectral continuity of light output by the lamp, and realize an illumination effect of higher color rendering property.

It should be noted that, in some other embodiments of the present application, the number of the light emitting elements 20 included in the first light emitting source 21 may also be two, three, four or more than four, and the number of the light emitting elements 20 included in the second light emitting source 22 may also be two, three, four or more than four, that is, the total number of the light emitting elements 20 included in the first light emitting source 21 and the second light emitting source 22 may be four or more. Moreover, the light emitting elements 20 included in the first light emitting source 21 and the second light emitting source 22 may include two or more light emitting elements outputting the same wavelength, and it is only necessary that the light emitting elements 20 of the first light emitting source 21 and the second light emitting source 22 can output at least four wavelengths in the visible light band.

In addition, in some other embodiments of the present application, the light emitting elements 20 of the first light emitting source 21 and the second light emitting source 22 may also include a white LED composed of a high frequency light LED and phosphor, such as a cold white LED and a warm white LED, so that other light emitting elements 20 with a specific output waveband may be used as a supplement to the white LED to adjust the color temperature of the output light of the luminaire.

In one embodiment of the present application, the light emitting elements 20 include at least one white light emitting element 20 and a plurality of single color light emitting elements 20, the white light emitting element 20 is used for increasing the illuminance of the light of the lamp, and the single color light emitting elements 20 are used for adjusting the color temperature of the light of the lamp.

In the present embodiment, the light emitting elements 20 include at least one white light emitting element 20 and a plurality of single-color light emitting elements 20, and the white light emitting element 20 is used as a basic lighting component for increasing the illuminance of the light of the lamp; the plurality of monochromatic light emitting elements 20 have different colors, and can adjust the color temperature of the light of the lamp, for example, the light can be adjusted to warm-tone white light illumination or cold-tone white light illumination, so that the light of the lamp can better fit the illumination effect of the sunlight at different time intervals in one day, and the user can adjust the indoor illumination color according to the decoration style.

Referring to fig. 2 and fig. 3, in an embodiment of the present application, the first light emitting source 21 further includes a first package 211, and each light emitting element 20 of the first light emitting source 21 is disposed in the first package 211; the second light source 22 further includes a second package 221, and each light emitting element 20 of the second light source 22 is disposed in the second package 221; the first package 211 and the second package 221 may be transparent packages. Of course, other packages made of transparent materials are also possible, and are not limited herein.

The first package body 211 and the second package body 221 may both be transparent package bodies, which improves the utilization efficiency of the light emitted by the light emitting element 20, so that the lamp can exhibit an illumination effect close to sunlight.

Referring to fig. 2 and fig. 3, as a specific embodiment of the present embodiment, four light emitting elements 20 are disposed in the first package 211, and four light emitting elements 20 are disposed in the second package 221, for example, the first light emitting element 201, the second light emitting element 202, the third light emitting element 203, and the fourth light emitting element 204 may be disposed in the first package 211, and the fifth light emitting element 205, the sixth light emitting element 206, the seventh light emitting element 207, and the eighth light emitting element 208 may be disposed in the second package 221. In this way, the first package 211 and the second package 221 are close in size, which is beneficial to the arrangement and the arrangement of the first light-emitting source 21 and the second light-emitting source 22 on the substrate 1, and is also beneficial to simplifying the arrangement of the electronic control circuit.

In one embodiment of the present application, the surfaces of the first package body 211 and the second package body 221 away from the substrate 1 are planar; alternatively, the surfaces of the first package 211 and the second package 221 that are away from the substrate 1 are compound-eye surfaces. That is, the surface of each light emitting element 20 facing each other is a plane or a compound eye surface, and the light emitted by the light emitting elements 20 in the first package 211 and the second package 221 passes through the transparent plane or the compound eye surface to realize illumination; when the surfaces of the first package 211 and the second package 221 away from the substrate 1 are compound-eye surfaces, the first package 211 and the second package 221 can also play a role in premixing light emitted from the light emitting element 20.

More preferably, in an embodiment of the present application, the luminaire further comprises an optical accessory (not shown in the figures) arranged on the side of the substrate 1 on which the first light-emitting source 21 and the second light-emitting source 22 are arranged.

The optical accessory can mix the color lights of different colors emitted by the light-emitting elements 20, so that the lamp has a lighting effect close to sunlight while avoiding glare. As a specific aspect of this embodiment, the optical accessory may adopt one of a fresnel lens, frosted glass, opal glass, a diffusion sheet, and a soft light box, or may adopt a combination of a plurality of the fresnel lens, frosted glass, opal glass, diffusion sheet, and the soft light box.

In an embodiment of the present application, the lamp includes a plurality of first light-emitting sources 21 and a plurality of second light-emitting sources 22, a first electrical connection line (not shown) for connecting each first light-emitting source 21 and a second electrical connection line (not shown) for connecting each second light-emitting source 22 are disposed on the substrate 1, and the second electrical connection line is disposed to be away from the first electrical connection line.

The second electric connection line is arranged to avoid the first electric connection line, so that the first electric connection line and the second electric connection line cannot be influenced mutually, power supply and control of each light-emitting element 20 can be realized only by printing a circuit on one side of the substrate 1, and the design of the circuit is simplified.

Referring to fig. 1, in one embodiment of the present application, the first light sources 21 are connected to form a first light-emitting ring, the second light sources 22 are connected to form a second light-emitting ring, and the first light-emitting ring and the second light-emitting ring are spaced from inside to outside. Such a design may facilitate the flat cable arrangement of the first and second electrical connection lines. Specifically, the first light emitting ring zone and the second light emitting ring zone may each be configured in a circular shape or a substantially circular shape, or the first light emitting ring zone and the second light emitting ring zone may each be configured in a polygonal shape such as a triangle, a quadrangle, a hexagon, and an octagon close to a circle. In particular, when the first light-emitting ring band and the second light-emitting ring band are configured as a triangle, a quadrangle and a hexagon, it is advantageous to configure the substrates 1 as a triangle, a quadrangle and a hexagon, respectively, and such an arrangement can facilitate seamless splicing between a plurality of substrates 1.

Referring to fig. 1, when the number of the first light-emitting zones is multiple, or when the number of the second light-emitting zones is multiple, the first light-emitting zones and the second light-emitting zones are arranged at intervals, so that the light emitted from the lamp is more uniform. For example, the first light emitting source 21 may be connected to form two first light emitting zones, the second light emitting source 22 may be connected to form two second light emitting zones, the first light emitting zones are disposed on the outermost layer and the secondary inner layer, and the second light emitting zones are disposed on the innermost layer and the secondary outer layer, so that the first electrical connection line and the second electrical connection line can be conveniently arranged on the substrate 1, and the light emitting of the lamp can be more uniform and close to the lighting effect of sunlight.

As a specific aspect of the present embodiment, each of the first light-emitting sources 21 of the first light-emitting ring band and each of the second light-emitting sources 22 of the second light-emitting ring band are arranged in different circumferential orientations, that is, the first light-emitting sources 21 and the second light-emitting sources 22 are in different directions as viewed from the axial positions of the respective light-emitting ring bands toward the periphery. Due to the configuration, the space on the surface of the substrate can be saved, the positions of the first light-emitting source 21 and the second light-emitting source 22 can be more uniformly arranged, the light mixing effect is further enhanced, and the uniform heat distribution of the substrate 1 is facilitated; the first light sources 21 of the first light-emitting zone and the second light sources 22 of the second light-emitting zone may also be arranged in the same radial direction, which arrangement also has a good light mixing effect.

In one embodiment of the present application, the first light emitting zone and the second light emitting zone are both circular zones; the first luminous zone has a number of first luminous sources 21 proportional to the diameter of the first luminous zone and the second luminous zone has a number of second luminous sources 22 proportional to the diameter of the second luminous zone. As the number of the first light-emitting ring zones and the second light-emitting ring zones increases, the distance between two adjacent first light-emitting sources 21 of the first light-emitting ring zone of the outer ring is larger, and the distance between two adjacent second light-emitting sources 22 of the second light-emitting ring zone of the outer ring is larger, so that the light mixing effect is influenced; the number of the first light-emitting sources 21 of the first light-emitting ring zone is configured to be in direct proportion to the diameter of the first light-emitting ring zone, and the number of the second light-emitting sources 22 of the second light-emitting ring zone is configured to be in direct proportion to the diameter of the second light-emitting ring zone, so that the light-emitting ring zone on the outer ring has more light-emitting sources, and the light mixing is more uniform.

It should be understood that, in order to achieve the avoidance arrangement of the first electrical connection line and the second electrical connection line, the plurality of first light-emitting sources 21 and the plurality of second light-emitting sources 22 are arranged on the surface of the substrate 1 according to a certain rule. For example, the first light-emitting sources 21 and the second light-emitting sources 22 may be arranged in rows and columns and staggered with each other.

In one embodiment of the present application, the side of the substrate 1 provided with the first light emitting source 21 and the second light emitting source 22 is provided with a white coating layer; alternatively, the substrate 1 may have a black coating layer on one surface thereof on which the first and second light-emitting sources 21 and 22 are disposed.

The white coating layer is disposed on the surface of the substrate 1 on which the first light-emitting source 21 and the second light-emitting source 22 are disposed, so that the utilization efficiency of the light energy of the light-emitting element 20 can be improved, and the illumination brightness of the lamp can be improved. Of course, in some embodiments, the substrate 1 may be blackened, and a black coating layer is disposed on the side of the substrate 1 where the first light-emitting source 21 and the second light-emitting source 22 are disposed, so as to ensure that the white light illumination effect of the lamp is still highly close to white light after a long time use.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A light fixture, comprising:

a substrate (1);

a plurality of first light-emitting sources (21), wherein the plurality of first light-emitting sources (21) are annularly arranged on one surface of the substrate (1), and each first light-emitting source (21) comprises at least two light-emitting elements (20) emitting different colors; and

a plurality of second light-emitting sources (22), wherein the plurality of second light-emitting sources (22) are annularly arranged on the same surface of the substrate (1) and the plurality of first light-emitting sources (21), and each second light-emitting source (22) comprises at least two light-emitting elements (20) emitting different colors;

the plurality of first light-emitting sources (21) and the plurality of second light-emitting sources (22) are arranged at intervals, wherein the color emitted by each light-emitting element (20) of the plurality of first light-emitting sources (21) is different from the color emitted by each light-emitting element (20) of the plurality of second light-emitting sources (22).

2. A luminaire as claimed in claim 1, characterized in that the first light-emitting source (21) comprises two or more monochromatic and/or white-light emitting elements emitting at different peak wavelengths, and the second light-emitting source (22) comprises two or more monochromatic and/or white-light emitting elements emitting at different peak wavelengths; the peak wavelength of each monochromatic light emitting element of the first light emitting source (21) is different from the peak wavelength of each monochromatic light emitting element of the second light emitting source (22), and the color temperature of each white light emitting element of the first light emitting source (21) is different from the color temperature of each white light emitting element of the second light emitting source (22).

3. A lamp as claimed in claim 1, characterized in that the number of light-emitting elements (20) of the first light-emitting source (21) having different peak wavelengths is four, the number of light-emitting elements (20) of the second light-emitting source (22) having different peak wavelengths is four, and the number of wavelengths in the visible light band that can be output by each of the light-emitting elements (20) of the first light-emitting source (21) and the second light-emitting source (22) is eight.

4. The lamp as claimed in claim 3, wherein the light emitting elements (20) comprise a first light emitting element (201) having a wavelength in the range of 620-625nm, a second light emitting element (202) having a wavelength in the range of 525-530nm, a third light emitting element (203) having a wavelength in the range of 589-595nm, a fourth light emitting element (204) having a wavelength in the range of 560-565nm, a fifth light emitting element (205) having a wavelength in the range of 390-395nm, a sixth light emitting element (206) having a wavelength in the range of 490-495nm, a seventh light emitting element (207) having a wavelength in the range of 510-515nm, and an eighth light emitting element (208) having a wavelength in the range of 460-465 nm;

the first light emitting source (21) includes four of the first light emitting element (201), the second light emitting element (202), the third light emitting element (203), the fourth light emitting element (204), the fifth light emitting element (205), the sixth light emitting element (206), the seventh light emitting element (207), and the eighth light emitting element (208); the second light-emitting source (22) includes four other of the first light-emitting element (201), the second light-emitting element (202), the third light-emitting element (203), the fourth light-emitting element (204), the fifth light-emitting element (205), the sixth light-emitting element (206), the seventh light-emitting element (207), and the eighth light-emitting element (208).

5. A lamp as claimed in any one of the claims 1 to 4, characterized in that the first light-emitting source (21) further comprises a first package (211), each light-emitting element (20) of the first light-emitting source (21) being arranged within the first package (211); the second light-emitting source (22) further comprises a second packaging body (221), and each light-emitting element (20) of the second light-emitting source (22) is arranged in the second packaging body (221); the first packaging body (211) and the second packaging body (221) are transparent packaging bodies.

6. A lamp as claimed in claim 5, characterized in that the faces of the first package (211) and the second package (221) remote from the substrate (1) are plane; or the surfaces of the first packaging body (211) and the second packaging body (221) far away from the substrate (1) are compound eye surfaces.

7. A lamp as claimed in any one of the claims 1 to 4, characterized in that the lamp comprises a plurality of said first light-emitting sources (21) and a plurality of said second light-emitting sources (22), and in that a first electrical connection line for connecting each of said first light-emitting sources (21) and a second electrical connection line for connecting each of said second light-emitting sources (22) are arranged on said substrate (1), said second electrical connection lines being arranged offset with respect to said first electrical connection lines.

8. A lamp as claimed in claim 7, characterized in that said first light-emitting sources (21) are connected in a first annular zone and said second light-emitting sources (22) are connected in a second annular zone, said first annular zone and said second annular zone being alternately spaced from the inside towards the outside; the first light-emitting ring belt and the second light-emitting ring belt are both circular ring belts; the first luminous zone has a number of the first luminous sources (21) proportional to the diameter of the first luminous zone and the second luminous zone has a number of the second luminous sources (22) proportional to the diameter of the second luminous zone.

9. A luminaire as claimed in claim 1, characterized in that the side of the substrate (1) provided with the first light-emitting source (21) and the second light-emitting source (22) is provided with a white coating; or a black coating layer is arranged on one surface of the substrate (1) provided with the first luminous source (21) and the second luminous source (22).

10. A lamp as claimed in claim 1, characterized in that it further comprises an optical accessory arranged on the side of the substrate (1) on which the first (21) and second (22) luminous sources are arranged, the optical accessory being able to mix the light of the colors of the luminous elements (20); the optical accessory includes at least one of a fresnel lens, frosted glass, opal glass, a diffuser, and a soft light box.

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