Light-emitting device and lighting system
By adopting multiple strip-like color luminous groups, misaligned arrangement and combinations of different lengths in the LED lamp beads, the uneven spot distribution and heat dissipation problems are solved, and the efficient color mixing effect of multi-color LED lamp beads is achieved.
Patent Information
- Application Number
- CN202422466526.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The arrangement of existing LED lamp beads leads to uneven distribution of spots, difficult to ensure color accuracy and illumination uniformity, and heat dissipation problems lead to higher costs.
Multiple color luminous groups arranged in strips are adopted, and the color mixing and homogenization of multi-color LED lamp beads is achieved through the combination of misalignment arrangement and the combination of light luminous groups of different lengths.
The color mixing of multi-color LED lamp beads is achieved, the color accuracy reaches more than 80%, the illuminance uniformity reaches more than 90%, and the energy utilization rate reaches more than 90%.
Smart Images
Figure CN223020112U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a light-emitting device and a lighting system including the light-emitting device. Background Art
[0002] At present, there are mainly two ways of light color switching technology. One way is to use a color wheel to switch the light color. However, this way has very few selectable colors, large light energy loss, and it is difficult to ensure color accuracy. The other way is to integrate multiple single LED lamp beads of multiple primary colors and project the mixed color light of the lamp beads by using simple lenses, etc., and mix the required colors by using the three-primary-color or multi-primary-color mixing theory. The arrangement of LED lamp beads in the prior art is regular arrangement, that is, the lamp beads of three colors R, G, and B (red, green, and blue) are arranged alternately. For example, refer to Chinese Patent Application No. 201820636702.2. The arrangement of LED lamp beads in the prior art results in uneven spot distribution, large differences in brightness and color between the center and the edge of the spot, and the LED lamp beads are too concentrated. During operation, heat is concentrated. In order to ensure normal operation, the radiator has a large volume and high cost. Summary of the Utility Model
[0003] Therefore, in view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a light-emitting device capable of mixing multiple single-color LED lamp beads to obtain a uniformly mixed color and a lighting system having the light-emitting device.
[0004] One aspect of the utility model is to provide a light-emitting device, which is characterized by including: a plurality of first-color light-emitting groups, each first-color light-emitting group including one or more first-color light-emitting elements arranged in a strip shape; a plurality of second-color light-emitting groups, each second-color light-emitting group including one or more second-color light-emitting elements arranged in a strip shape; a plurality of third-color light-emitting groups, each third-color light-emitting group including one or more third-color light-emitting elements arranged in a strip shape. The first-color light-emitting groups, the second-color light-emitting groups, and the third-color light-emitting groups are arranged side by side. For each first-color light-emitting group, a second-color light-emitting group or a third-color light-emitting group is arranged on one side thereof, or a second-color light-emitting group and a third-color light-emitting group are respectively arranged on both sides thereof.
[0005] In the light-emitting device as described above, each light-emitting element in the light-emitting group is arranged in a staggered manner with respect to the light-emitting elements in the adjacent light-emitting group.
[0006] In the light-emitting device as described above, each light-emitting element in the light-emitting group is arranged at the middle position corresponding to two light-emitting elements in the adjacent light-emitting group.
[0007] In the light-emitting device as described above, the light-emitting elements in two light-emitting groups separated by one light-emitting group are arranged in alignment.
[0008] In the light-emitting device described above, the strip-shaped light-emitting groups have different lengths. In at least part of the light-emitting device, a short light-emitting group is arranged between two long light-emitting groups. In the edge area of the light-emitting device, the lengths of the light-emitting groups are arranged in a decreasing manner.
[0009] In the light-emitting device described above, the light-emitting groups in the left-to-right direction respectively include 1 first-color light-emitting element, 2 third-color light-emitting elements, 3 second-color light-emitting elements, 4 first-color light-emitting elements, 3 third-color light-emitting elements, 4 second-color light-emitting elements, 3 first-color light-emitting elements, 4 third-color light-emitting elements, 3 second-color light-emitting elements, 4 first-color light-emitting elements, 3 third-color light-emitting elements, 2 second-color light-emitting elements, and 1 first-color light-emitting element.
[0010] In the light-emitting device described above, the light-emitting groups are arranged at the same distance, and the light-emitting elements in each light-emitting group are arranged at the same distance.
[0011] In the light-emitting device described above, the first color is red, the second color is green, and the third color is blue.
[0012] Another aspect of the present utility model lies in providing an illumination system, including the light-emitting device, a first collimating lens group, a second collimating lens group, and a first light homogenizing lens group arranged in sequence as described above.
[0013] In the illumination system described above, a second light homogenizing lens group and / or a converging lens are further included.
[0014] Through the present utility model, compared with the existing color mixing and light distribution scheme, the color mixing and homogenization of multi-color LED lamp beads can be effectively realized. The color accuracy can reach more than 80%, the uniformity of illuminance can reach more than 90%, and the energy utilization rate can reach more than 90%. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the first embodiment of the illumination system according to the present utility model.
[0016] Figure 2 It is a schematic diagram of the second embodiment of the illumination system according to the present utility model.
[0017] Figure 3 It is a schematic diagram of the third embodiment of the illumination system according to the present utility model.
[0018] Figure 4 It is a schematic diagram of the first implementation manner of the light-emitting device according to the present utility model.
[0019] Figure 5 Schematic diagram of the first embodiment of the light-emitting device according to the present utility model.
[0020] Figure 6 Optical path schematic diagram of the lighting system according to the present utility model. Detailed implementation mode
[0021] As Figure 1 As shown, the first embodiment of the lighting system according to the present utility model includes a light-emitting device 1, a first collimating lens group 2, a second collimating lens group 3, a first light homogenizing lens group 4, a second light homogenizing lens group 5, and a converging lens 6 arranged in sequence.
[0022] The light-emitting device 1 includes a plurality of LED lamp beads arranged on a substrate. The first collimating lens group 2 is placed in front of the light-emitting device 1. The first collimating lens group 2 includes a plurality of first collimating lenses 21. Each LED lamp bead of the light-emitting device 1 corresponds to each first collimating lens 21 of the collimating lens group 2. All the first collimating lenses 21 are in the same plane, forming the first collimating lens group, and performing the first collimation on the light emitted from the LED lamp beads. The first collimating lens 21 can be a spherical mirror. When the first collimating lens 21 is a spherical mirror, the radius of curvature is preferably 4.28 mm, and the aperture is preferably 6.71 mm.
[0023] The second collimating lens group 3 is placed behind the first collimating lens group 2. The second collimating lens group 3 includes a plurality of second collimating lenses 31. Each first collimating lens 21 of the first collimating lens group 2 corresponds to and is placed with a second collimating lens 31 of the second collimating lens group 3. All the second collimating lenses 31 are in the same plane, forming the second collimating lens group 3, and performing the second collimation on the beam after the first collimation. The second collimating lens 31 can be a spherical mirror. When the second collimating lens 31 is a spherical mirror, the radius of curvature is preferably 5.43 mm, and the aperture is preferably 8.2 mm.
[0024] The first light homogenizing lens group 4 is placed behind the second collimating lens group 3. The first light homogenizing lenses 41 of the first light homogenizing lens group 4 do not have to correspond to the previous collimating lenses one by one. The first light homogenizing lens group 4 performs the first light homogenization on the collimated beam. The first light homogenizing lens group 41 can be a spherical mirror. When the first light homogenizing lens group 41 is a spherical mirror, the radius of curvature is preferably 2.14 mm, and the aperture is preferably 3.1 mm. The second light homogenizing lens group 5 is placed behind the first light homogenizing lens group 4. The structure of the second light homogenizing lenses of the second light homogenizing lens group 5 can be exactly the same as that of the first light homogenizing lens 41, and performs the second light homogenization on the beam after the first light homogenization. The converging lens 6 is arranged behind the second light homogenizing lens group 5.
[0025] The distance between the first collimating lens group 2 and the second collimating lens group 3 is preferably 2 mm, the distance between the second collimating lens group 3 and the first light homogenizing lens group 4 is preferably 1 mm, and the distance between the first light homogenizing lens group 4 and the second light homogenizing lens group 5 is preferably 6 mm. The first collimating lens group 2 and the second collimating lens group 3 can compress the divergence angle of the incident light beam, concentrate more than 80% of the incident light energy within the range of 40 - 70 mm, and compress the divergence angle to within the range of 10° - 20°. After being homogenized twice by the first light homogenizing lens group 4 and the second light homogenizing lens group 5, the uniformity of the light spot is above 0.8.
[0026] Figure 2 For the second embodiment of the lighting system according to the present invention, compared with Figure 1 the first embodiment shown, only the first light homogenizing lens group 4 is adopted, and the second light homogenizing lens group 5 is omitted. The structures of other components can be the same as those in Figure 1 the embodiment shown.
[0027] Figure 3 For the third embodiment of the lighting system according to the present invention, compared with Figure 1 the first embodiment shown, the converging lens 6 is omitted. The structures of other components can be the same as those in Figure 1 the embodiment shown.
[0028] Figure 1-3 The embodiments shown are only the implementation manners of the present invention, but the present invention is not limited thereto. Other structures can be adopted without departing from the scope of the present invention. For example, the collimating lens group can be set to more than two or only one.
[0029] Figure 4 The first embodiment of the light emitting device 1 according to the present invention is disclosed. The light emitting device includes a plurality of light emitting unit devices, and these light emitting unit devices are integrated on a planar substrate. The light emitting unit device can be an LED lamp bead or other light emitting elements. Hereinafter, an LED lamp bead will be taken as an example for detailed description.
[0030] As Figure 4 shown, the LED lamp beads of the light emitting device are arranged in a multi-column arrangement. From left to right, the LED lamp beads are arranged as the first column light emitting group 71, the second column light emitting group 72, the third column light emitting group 73, the fourth column light emitting group 74, the fifth column light emitting group 75, the sixth column light emitting group 76, the seventh column light emitting group 77, the eighth column light emitting group 86, the ninth column light emitting group 85, the tenth column light emitting group 84, the eleventh column light emitting group 83, the twelfth column light emitting group 82, and the thirteenth column light emitting group 81.
[0031] In Figure 1In the illustrated embodiment, the first column of light-emitting groups 71 includes a single red LED lamp bead, the second column of light-emitting groups 72 includes two blue LED lamp beads arranged side by side, the third column of light-emitting groups 73 includes three green LED lamp beads arranged side by side, the fourth column of light-emitting groups 74 includes four red LED lamp beads arranged side by side, the fifth column of light-emitting groups 75 includes three blue LED lamp beads arranged side by side, the sixth column of light-emitting groups 76 includes four green LED lamp beads arranged side by side, the seventh column of light-emitting groups 77 includes three red LED lamp beads arranged side by side, the eighth column of light-emitting groups 86 includes four blue LED lamp beads arranged side by side, the ninth column of light-emitting groups 85 includes two green LED lamp beads arranged side by side, the tenth column of light-emitting groups 84 includes four red LED lamp beads arranged side by side, the eleventh column of light-emitting groups 83 includes three blue LED lamp beads arranged side by side, the twelfth column of light-emitting groups 82 includes two green LED lamp beads arranged side by side, and the thirteenth column of light-emitting groups 81 includes a single red LED lamp bead.
[0032] In Figure 1 In the illustrated embodiment, except for the light-emitting groups at both ends of the light-emitting device, light-emitting groups of different colors are arranged on both sides of each light-emitting group. For example, the seventh column of light-emitting groups 77 is a red light-emitting group, and the sixth column of light-emitting groups 76 that emits green light is arranged on its left side, and the eighth column of light-emitting groups 86 that emits blue light is arranged on its right side. Another example is that the sixth column of light-emitting groups 76 is a green light-emitting group, the fifth column of light-emitting groups 75 that emits blue light is arranged on its left side, and the seventh column of light-emitting groups 77 that emits red light is arranged on its right side.
[0033] For the light-emitting groups at both ends of the light-emitting device, light-emitting groups of different colors are arranged only on one side thereof. The light-emitting groups at both ends of the light-emitting device are the first column of light-emitting groups 71 and the thirteenth column of light-emitting groups 81. The first column of light-emitting groups 71 is a red light-emitting group, and the second column of light-emitting groups 72 that emits blue light is arranged on its right side. The thirteenth column of light-emitting groups 81 is a red light-emitting group, and the twelfth column of light-emitting groups 82 that emits green light is arranged on its left side.
[0034] Each light-emitting element in each light-emitting group is arranged in a staggered manner with respect to the light-emitting elements in the adjacent light-emitting group. For example, the first column of light-emitting groups 71 includes one lamp bead, and the adjacent light-emitting group is the light-emitting groups 72 that includes two lamp beads. The lamp bead of the light-emitting groups 71 is arranged in a staggered manner with respect to the two lamp beads of the light-emitting groups 72, and is preferably located at the middle position between these two lamp beads. Another example is that the two lamp beads of the light-emitting groups 72 are both arranged in a staggered manner with respect to the three lamp beads of their corresponding light-emitting groups 73.
[0035] As Figure 4 shown, the lengths of the light-emitting groups of the light-emitting device according to the present utility model are different. It can be in accordance with as Figure 4Arrange the light-emitting groups of different lengths in the manner shown. In the middle region of the light-emitting device, arrange them in the order of one long and one short, so as to form a structure in which a short light-emitting group is arranged between two long light-emitting groups. In the edge region of the light-emitting device, the length of the light-emitting group can be made shorter and shorter based on the size of the light-emitting device. Of course, if the size of the light-emitting device permits, the edge region can also be arranged in a manner similar to that of the middle region.
[0036] Furthermore, the light-emitting elements in the light-emitting group can be arranged in alignment as Figure 5 shown. Figure 5 The dotted line in Figure 5 shows the alignment manner of the light-emitting elements. It can be seen that the light-emitting elements in two light-emitting groups separated by one light-emitting group are aligned with each other and thus located on a straight line.
[0037] In the present utility model, the light-emitting groups can be arranged at the same distance apart, and the light-emitting elements in each light-emitting group can also be arranged at the same distance apart.
[0038] It should be clear that the above embodiments are merely one implementation manner of the present utility model, and other alignment manners can be adopted without departing from the scope of the present utility model.
[0039] In addition, any two or three of the three-color (red, green, blue) LED lamp beads in the above embodiments can be interchanged, and the present utility model can still be realized. For example, all the red LED lamp beads in the above embodiments can be replaced with blue LED lamp beads, all the green LED lamp beads can be replaced with red LED lamp beads, and the blue LED lamp beads can be replaced with green LED lamp beads at the same time.
[0040] In addition, in addition to the three-color (red, green, blue) combination in the above embodiments, combinations of other colors can also be used.
[0041] Next, with reference to Figure 6 , the light mixing principle according to the present utility model will be described in detail.
[0042] The light emitted by the LED lamp beads on the light-emitting device 1 becomes collimated light after being collimated by the first collimating lens group 2 and the second collimating lens group 3 located in front of the light-emitting device 1. The first light homogenizing lens group 4 and the second light homogenizing lens group 5 perform two light homogenizing operations on the collimated light. Subsequently, through the action of the converging lens 6, it is converged on the projection plane 7. By adjusting the power of each LED lamp bead on the light-emitting device 1, a light spot of the required color can be obtained on the projection plane 7.
[0043] Although regardless of how the LED lamp beads on the light-emitting device 1 are arranged, ultimately the light emitted by all the LED lamp beads will pass through the first collimating lens group 2, the second collimating lens group 3, the first light homogenizing lens group 4, and the second light homogenizing lens group 5, and be projected onto the projection plane 7 through the converging action of the converging lens 6, in the prior art, the LED lamp beads of various colors are relatively dispersed, so the color accuracy and uniformity of the light spot obtained on the projection plane 7 are not very satisfactory.
[0044] In the present utility model, the LED lamp beads of different colors are arranged in a strip-like order. The LED lamp beads of each strip are mixed with the LED lamp beads of the adjacent strip respectively. Taking Figure 4 the illustrated embodiment as an example for description, the LED lamp beads in the middle strip (the seventh column light-emitting group 77) are red, the LED lamp beads in the left strip (the sixth column light-emitting group 76) are green, and the LED lamp beads in the right strip (the eighth column light-emitting group 86) are blue, that is, the LED lamp beads of the three primary colors are distributed in adjacent strips. By adjusting the power of the LED lamp beads in each strip, the desired color can be obtained. Since the LED lamp beads of each primary color are regularly arranged in a strip-like shape, the dimming color can be controlled more effectively.
[0045] Moreover, in the present utility model, each LED lamp bead in each strip is arranged in a staggered manner with respect to the LED lamp beads in the adjacent strip. For any one LED lamp bead among the three primary colors, it is at the same distance from the LED lamp beads of the other two primary colors, and the distance is not compact. That is to say, compared with the side-by-side arrangement in the prior art, the distance between any two LED lamp beads of different primary colors is larger. This not only facilitates manufacturing, but also can obtain a more uniform light mixing effect.
[0046] Experiments show that the color accuracy of the LED lamp beads arranged in this way can reach more than 80%, the uniformity of illuminance can reach more than 90%, and the energy utilization rate can reach more than 90%.
[0047] In this specification, the specific features, mechanisms, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0048] The above are only the implementation examples of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present application by the same token.
Claims
1. A light emitting device, characterized in that include: A plurality of first color light-emitting groups, each of which includes one or more first color light-emitting elements arranged in strips, A plurality of second color light-emitting groups, each second color light-emitting group comprising one or more second color light-emitting elements arranged in a strip shape, A plurality of third color light-emitting groups, each of which includes one or more third color light-emitting elements arranged in a strip shape, The first color light emitting group, the second color light emitting group, and the third color light emitting group are arranged side by side. For each first color light-emitting group, a second color light-emitting group or a third color light-emitting group is arranged on one side thereof, or a second color light-emitting group and a third color light-emitting group are arranged on both sides thereof respectively.
2. The light emitting device according to claim 1, characterized in that: Each light emitting element in the light emitting group is arranged in a staggered manner relative to the light emitting elements in the adjacent light emitting group.
3. The light emitting device according to claim 2, characterized in that: Each light emitting element in the light emitting group is arranged corresponding to the middle position of two light emitting elements in the adjacent light emitting group.
4. The light emitting device according to claim 3, characterized in that: The light emitting elements in two light emitting groups separated by one light emitting group are aligned.
5. The light emitting device according to claim 4, characterized in that: The strip-shaped light-emitting groups have different lengths. In at least a partial area of the lighting device, a short lighting group is arranged between two long lighting groups. In the edge region of the lighting device, the lengths of the lighting groups are arranged in a decreasing manner.
6. The light emitting device according to claim 5, characterized in that: The light-emitting groups from left to right include 1 first color light-emitting element, 2 third color light-emitting elements, 3 second color light-emitting elements, 4 first color light-emitting elements, 3 third color light-emitting elements, 4 second color light-emitting elements, 3 first color light-emitting elements, 4 third color light-emitting elements, 3 second color light-emitting elements, 4 first color light-emitting elements, 3 third color light-emitting elements, 2 second color light-emitting elements, and 1 first color light-emitting element.
7. The light emitting device according to any one of claims 1 to 6, characterized in that: The light-emitting groups are arranged at the same distance, and the light-emitting elements in each light-emitting group are arranged at the same distance.
8. The light emitting device according to any one of claims 1 to 6, characterized in that: The first color is red, the second color is green, and the third color is blue.
9. A lighting system, characterized in that: The invention comprises the light emitting device as claimed in any one of claims 1 to 8, a first collimating lens group, a second collimating lens group and a first light homogenizing lens group which are arranged in sequence.
10. The lighting system according to claim 9, characterized in that: It further includes a second light homogenizing lens group and / or a converging lens.
Citation Information
Patent Citations
Be used for LED polychrome lamp pearl structure of arranging
CN208474962U