A light source module and a lamp

Abstract

This utility model discloses a light source module, comprising: a light-emitting unit, which includes four LEDs arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction; the four chips in each LED emit different colors; for two adjacent LEDs in the first direction, the two adjacent chips in the first direction emit different colors; for two adjacent LEDs in the second direction, the two adjacent chips in the second direction emit different colors; and a lens, which includes an incident end, with LEDs disposed at the incident end. The light-emitting unit of this utility model can achieve a light-emitting surface with four colors evenly distributed; and the lens concentrates the light emitted by the LEDs into a smaller angle beam, while the light spots formed by the light-emitting units overlap, thereby obtaining a high-brightness light spot with uniform color.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, specifically relating to a light source module and a lighting fixture. Background Technology

[0002] LED (Light Emitting Diode) lights, film and television lights, and other lighting devices typically emit light through a light source equipped with LED beads.

[0003] For example, panel lights are a type of LED lighting fixture, typically featuring a large luminous surface and a relatively thin profile, making them widely used in film and television lighting. Early panel lights used direct-emission LED chips. Because the light emitted by LED chips follows a Lambertian distribution, the beam angle is relatively large, resulting in low illuminance and limiting their use to soft lighting. To improve illuminance, some panel lights employ secondary optical designs such as TIR lenses, Fresnel lenses, and aspherical lenses to reduce the beam angle.

[0004] However, due to the large light-emitting surface of panel lights, there is usually a large gap between the LED chips, resulting in insufficient light mixing. Therefore, light mixing of colored LED panel lights is a major problem, and the problem will be further aggravated when the beam angle is reduced.

[0005] To solve the problem of light mixing, compound eye lenses are usually added in optical design or the surface of TIR lenses is made into a frosted surface with a large degree of haze. However, the essence of these light mixing measures is to increase the disordered diffusion of light, which will lead to the expansion of the beam angle, resulting in a decrease in illuminance and an increase in stray light.

[0006] Therefore, in related technologies, panel lights cannot reduce the beam angle while ensuring uniform light spot, resulting in low illuminance. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a light source module in which the light-emitting unit can obtain four light-emitting surfaces with uniform color, and uses a lens to concentrate the light emitted by the lamp beads into a smaller angle beam. At the same time, the light spots formed by the four chips in each lamp bead are superimposed on each other, and the light spots formed by the four lamp beads in the light-emitting unit are further superimposed to obtain a high-brightness light spot with uniform color.

[0008] The second objective of this utility model is to provide a lamp, including at least one light source module, to obtain a beam with a smaller angle, higher illuminance, and uniform light mixing.

[0009] One of the objectives of this utility model is achieved through the following technical solution: A light source module, comprising: The light-emitting unit includes four LED beads arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction. Each LED bead includes four chips arranged in two columns along the first direction and in two rows along the second direction, wherein the four chips in each LED bead emit different colors. For two adjacent LED beads in the first direction, the light emitted by the two adjacent chips in the first direction is different; For two adjacent LED beads in the second direction, the light emitted by the two adjacent chips in the second direction is different; The lens includes an incident end, and the lens is correspondingly arranged with the lamp bead, with the lamp bead located at the incident end.

[0010] As an optional implementation, the lens is a total internal reflection lens.

[0011] As an alternative implementation, in the light-emitting unit, and among the two LEDs located diagonally, the chip color arrangement of one LED after rotating 180 degrees around its geometric center is consistent with the chip color arrangement of the other LED.

[0012] As an optional implementation, the lens also includes an exit end, which is disposed opposite to the incident end; The incident end is provided with an incident cavity, and the exit end is provided with an exit surface. The light beam emitted by the light-emitting unit enters through the incident cavity and exits through the exit surface.

[0013] As an optional implementation, a first incident surface is provided on the side of the incident cavity, and a second incident surface is provided on the end face of the incident cavity. The lens has a total reflection surface on its side; Among them, part of the light beam that enters the incident cavity through the lamp bead enters the lens through the first incident surface, and after total internal reflection at the total reflection surface, it exits from the exit surface. In this process, a portion of the light beam emitted by the lamp bead enters the lens through the second incident surface and then exits from the exit surface.

[0014] As an alternative implementation, the geometric center of the LED is located on the central axis of the lens.

[0015] As an optional implementation, the edges of the exit surface and the total reflection surface have a distance H1 in the direction of the central axis of the lens, and the value of H1 ranges from 0.5mm to 2mm.

[0016] As an optional implementation, the distance between the geometric centers of two adjacent LEDs in the first direction is H2, the distance between the geometric centers of two adjacent LEDs in the second direction is H3, and the diameter of the emission surface is Φ, where H2 = H3 ≥ Φ.

[0017] As an optional implementation, the exit surface is a frosted surface.

[0018] The second objective of this utility model is achieved by the following technical solution: A lighting fixture includes a fixed structure and a light source module, wherein the light source module is mounted on the fixed structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In the light-emitting unit of the light source module of this utility model, the four chips in each lamp bead emit different colors. For two lamp beads adjacent to each other in the first direction, the two chips adjacent to each other in the first direction emit different colors. For two lamp beads adjacent to each other in the second direction, the two chips adjacent to each other in the second direction emit different colors. Thus, the light-emitting unit can obtain a light-emitting surface with four colors evenly arranged. The light emitted by the lamp beads is focused into a smaller angle beam by the lens. At the same time, the light spots formed by the four chips in each lamp bead are superimposed on each other. The light spots formed by the four lamp beads in the light-emitting unit are further superimposed to obtain a high-brightness light spot with uniform color.

[0020] 2. The lamp of this utility model includes at least one of the above-mentioned light source modules to obtain a beam with a smaller angle, higher illuminance, and uniform light mixing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the external structure of the lamp bead and lens from a first-view perspective in Embodiment 1 of this utility model.

[0023] Figure 2 This is a schematic diagram of the external structure of the lamp bead and lens from a second perspective in Embodiment 1 of this utility model.

[0024] Figure 3 This is a schematic diagram of the internal structure of the lamp bead and lens in Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of the light path of light in the lens in Embodiment 1 of this utility model.

[0026] Figure 5 This is a schematic diagram of the chip color arrangement of the light-emitting unit in Embodiment 1 of this utility model.

[0027] Figure 6 This is a structural schematic diagram of the lamp in Embodiment 2 of this utility model from a first-view perspective.

[0028] Figure 7 This is a structural schematic diagram of the lamp in Embodiment 2 of this utility model from a second perspective.

[0029] Figure 8 This is an exploded structural diagram of the lamp in Embodiment 2 of this utility model.

[0030] Explanation of key figure labels: 10. Light-emitting unit; 101. Lamp bead; 1011. Chip; 20. Lens; 201. Incident end; 202. Exit end; 203. Incident cavity; 204. Exit surface; 205. First incident surface; 206. Second incident surface; 207. Total reflection surface; 208. Positioning post; 30. Fixing structure. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0035] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0036] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0037] Example 1 See Figure 1 as well as Figure 5 This utility model discloses a light source module, including: a light-emitting unit 10, which includes four LED beads 101 arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction. Each LED bead 101 includes four chips 1011 arranged in two columns along the first direction and in two rows along the second direction. The four chips 1011 in each LED bead 101 emit different colors. For two adjacent LED beads 101 in the first direction, the two adjacent chips 1011 in the first direction emit different colors. For two adjacent LED beads 101 in the second direction, the two adjacent chips 1011 in the second direction emit different colors. A lens 20 includes an incident end 201, which is correspondingly disposed with the LED beads 101, and the LED beads 101 are disposed at the incident end 201.

[0038] In the light emitting unit 10 of the light source module of the present utility model, the four chips 1011 in each light bead 1011 have different luminous colors. For two adjacent light beads 101 in a first direction, the two chips 1011 adjacent to each other in the first direction have different luminous colors; for two adjacent light beads 101 in a second direction, the two chips 1011 adjacent to each other in the second direction have different luminous colors, so that the light emitting unit 10 can obtain a light emitting surface with four colors uniformly arranged; and the lens 20 is used to converge the light emitted by the light beads 101 into a small-angle light beam, meanwhile, the light spots formed by the four chips 1011 in each light bead 101 are superimposed on each other, and the light spots formed by the four light beads 101 in the light emitting unit 10 are further superimposed, so as to obtain a high-brightness light spot with uniform color.

[0039] For example, the first direction is Figure 5 is the direction A in Figure 5 , and the second direction is the direction B in

[0040] It should be noted that the light beads 101 and the lenses 20 are arranged in one-to-one correspondence.

[0041] In the embodiment of the present utility model, the lens 20 is a total internal reflection lens.

[0042] For example, the lens 20 can directly be a TIR lens, of course, the lens 20 can also adopt other types of lenses, and the specific type of the lens 20 is not limited.

[0043] In the embodiment of the present utility model, in the light emitting unit 10, among the two light beads 101 located on the diagonal, the color arrangement of the chips 1011 of one light bead 101 after rotating 180 degrees around its geometric center is consistent with that of the other light bead 101.

[0044] Referring to Figure 5 , for example, the four light beads 101 in the light emitting unit 10 are arranged in a "field-shaped" layout, and the four chips 1011 in each light bead 101 are also arranged in a "field-shaped" layout.

[0045] Among the four chips 1011 of the light bead 101 located in the first row and first column, the chip 1011 located in the first row and first column has a white luminous color; the chip 1011 located in the first row and second column has a blue luminous color, the chip 1011 located in the second row and first column has a green luminous color, and the chip 1011 located in the second row and second column has a red luminous color.

[0046] Of the four chips 1011 in the LED beads 101 located in the first row and second column, the chip 1011 located in the first row and first column emits green light, the chip 1011 located in the first row and second column emits red light, the chip 1011 located in the second row and first column emits white light, and the chip 1011 located in the second row and second column emits blue light.

[0047] Of the four chips 1011 in the LED beads 101 located in the second row and first column, the chip 1011 located in the first row and first column emits blue light, the chip 1011 located in the first row and second column emits white light, the chip 1011 located in the second row and first column emits red light, and the chip 1011 located in the second row and second column emits green light.

[0048] Of the four chips 1011 in the second row and second column of the LED beads 101, the chip 1011 in the first row and first column emits red light, the chip 1011 in the first row and second column emits green light, the chip 1011 in the second row and first column emits blue light, and the chip 1011 in the second row and second column emits white light.

[0049] Therefore, the four chips 1011 in each LED bead 101 emit different colors, namely red, blue, green and white.

[0050] The above-mentioned two adjacent LED beads 101 in the first direction have different light emission colors, specifically as follows: For the LED 101 in the first row and first column and the LED 101 in the first row and second column, the LED 101 chip in the first row and second column of the LED 101 emits blue light, while the LED 101 chip in the first row and second column of the LED 101 emits green light. Therefore, the LED 101 chip in the first row and second column of the LED 101 emits a different light color than the LED 101 chip in the first row and second column of the LED 101.

[0051] For LED beads 101 in row 1 and column 1 and LED beads 101 in row 1 and column 2, the light emission color of chip 1011 in row 2 and column 1 of LED beads 101 in row 1 and column 1 is red, and the light emission color of chip 1011 in row 2 and column 1 of LED beads 101 in row 1 and column 2 is white. Therefore, the light emission color of chip 1011 in row 2 and column 1 of LED beads 101 in row 1 and column 2 is different from the light emission color of chip 1011 in row 2 and column 1 of LED beads 101 in row 1 and column 2.

[0052] For LED 101 in row 2, column 1 and LED 101 in row 2, column 2, the light emission color of chip 1011 in row 1, column 1 of LED 101 in row 2, column 1 is white, and the light emission color of chip 1011 in row 1, column 1 of LED 101 in row 2, column 2 is red. Therefore, the light emission color of chip 1011 in row 1, column 1 of LED 101 in row 2, column 1 is different from the light emission color of chip 1011 in row 1, column 1 of LED 101 in row 2, column 2.

[0053] For LED 101 in row 2, column 1 and LED 101 in row 2, column 2, the light emission color of chip 1011 in row 2, column 1 of LED 101 is green, and the light emission color of chip 1011 in row 2, column 1 of LED 101 is blue. Therefore, the light emission color of chip 1011 in row 2, column 1 of LED 101 is different from the light emission color of chip 1011 in row 2, column 1 of LED 101.

[0054] The above-mentioned two adjacent LED beads 101 in the second direction have different light emission colors compared to two adjacent chips 1011 in the second direction, specifically as follows: For the LED beads 101 in the first row and first column and the LED beads 101 in the second row and first column, the light emission color of the chip 1011 in the second row and first column of the LED beads 101 in the first row and first column is green, and the light emission color of the chip 1011 in the first row and first column of the LED beads 101 in the second row and first column is blue. Therefore, the light emission color of the chip 1011 in the second row and first column of the LED beads 101 in the first row and first column is different from the light emission color of the chip 1011 in the first row and first column of the LED beads 101 in the second row and first column.

[0055] For the LED 101 in the first row and first column and the LED 101 in the second row and first column, the chip 1011 in the second row and second column of the LED 101 in the first row and first column emits red light, and the chip 1011 in the first row and second column of the LED 101 in the second row and first column emits white light. Therefore, the light emission color of the chip 1011 in the second row and second column of the LED 101 in the first row and first column is different from the light emission color of the chip 1011 in the first row and second column of the LED 101 in the second row and first column.

[0056] For the LEDs 101 in the first row and second column and the LEDs 101 in the second row and second column, the chip 1011 in the second row and first column of the LEDs 101 in the first row and second column emits white light, while the chip 1011 in the first row and first column of the LEDs 101 in the second row and second column emits red light. Therefore, the light emission color of the chip 1011 in the second row and first column of the LEDs 101 in the first row and second column is different from the light emission color of the chip 1011 in the first row and first column of the LEDs 101 in the second row and second column.

[0057] For the LED beads 101 in the first row and second column and the LED beads 101 in the second row and second column, the light emission color of the chip 1011 in the second row and second column of the LED beads 101 in the first row and second column is blue, and the light emission color of the chip 1011 in the first row and second column of the LED beads 101 in the second row and second column is green. Therefore, the light emission color of the chip 1011 in the second row and second column of the LED beads 101 in the first row and second column is different from the light emission color of the chip 1011 in the first row and second column of the LED beads 101 in the second row and second column.

[0058] Therefore, the color arrangement of the chip 1011 after the LED bead 101 in the first row and first column is rotated 180 degrees clockwise or 180 degrees counterclockwise around its geometric center is the same as the color arrangement of the chip 1011 in the second row and second column of the LED bead 101.

[0059] Therefore, the color arrangement of the chip 1011 after the LED bead 101 in the first row and second column is rotated 180 degrees clockwise or counterclockwise around its geometric center is the same as the color arrangement of the chip 1011 in the second row and first column.

[0060] Of course, in other embodiments, the light emission color of chip 1011 can be other colors. The light emission color of chip 1011 is selected according to the actual application scenario and is not limited.

[0061] In this embodiment of the present invention, the lens 20 further includes an exit end 202, which is disposed opposite to the incident end 201; the incident end 201 is provided with an incident cavity 203, and the exit end 202 is provided with an exit surface 204. The light beam emitted by the light-emitting unit 10 enters through the incident cavity 203 and exits through the exit surface 204.

[0062] In this embodiment of the invention, a first incident surface 205 is provided on the side of the incident cavity 203, and a second incident surface 206 is provided on the end face of the incident cavity 203; a total reflection surface 207 is provided on the side of the lens 20; wherein, part of the light beam from the lamp bead 101 entering the incident cavity 203 enters the lens 20 through the first incident surface 205, and after total internal reflection on the total reflection surface 207, it exits from the exit surface 204; wherein, part of the light beam from the lamp bead 101 entering the incident cavity 203 enters the lens 20 through the second incident surface 206 and exits from the exit surface 204.

[0063] See Figure 3 as well as Figure 4 Since the incident cavity 203 is located inside the lens 20, a structure of inner layer incident and outer layer reflection is formed.

[0064] Since the lens 20 is set in a one-to-one correspondence with the lamp bead 101, the lens 20 concentrates the light emitted by the corresponding lamp bead 101 into a small-angle beam.

[0065] In this embodiment of the invention, the geometric center of the lamp bead 101 is located on the central axis of the lens 20.

[0066] In this embodiment of the invention, the edges of the exit surface 204 and the total reflection surface 207 are spaced apart by a distance H1 along the central axis of the lens 20, with H1 ranging from 0.5 mm to 2 mm.

[0067] Because of the spacing H1, the risk of breakage due to the sharp edges of the lens 20 is reduced, and the installation of the structure is also facilitated.

[0068] In this embodiment of the present invention, the distance between the geometric centers of two adjacent LED beads 101 in the first direction is H2, the distance between the geometric centers of two adjacent LED beads 101 in the second direction is H3, the diameter of the emission surface 204 is Φ, and H2=H3≥Φ.

[0069] For example, see Figure 7 H2=H3=Φ.

[0070] Of course, in some application scenarios, H2 = H3 > Φ.

[0071] In this embodiment of the invention, the emission surface 204 is a frosted surface.

[0072] To achieve more complete light mixing, the emission surface 204 is made into a frosted surface, which can increase the diffusion of light and make the light spot formed by the lens 20 of each LED 101 more uniform, preventing the formation of cross-shaped dark lines due to the gaps between the chips 1011.

[0073] However, to avoid the beam angle being too large due to the fog-like shape of the exit surface 204, the exit surface 204 is slightly fogged, for example, with a fog value range of 10%-30%, so that the resulting beam angle is smaller and the beam spot is more uniform.

[0074] Example 2 See Figures 1 to 8 This utility model discloses a lamp, including a fixed structure 30 and at least one of the above-mentioned light source modules, the light source modules being disposed on the fixed structure 30.

[0075] The lamp of this invention includes at least one of the above-mentioned light source modules to obtain a beam with a smaller angle, higher illuminance, and uniform light mixing.

[0076] It should be noted that the fixing structure 30 can be integrally molded or made in parts. When the fixing structure 30 is made in parts, the fixing structure 30 includes a lens 20 cover plate, a protective plate, and a housing. The lens 20 cover plate, the protective plate, and the housing are all made of plastic. The lens 20 cover plate is provided with a groove for installing the lens 20. The protective plate is a transparent PC sheet. The protective plate can prevent the exit surface 204 of the lens 20 from being scratched, thereby achieving better optical effects.

[0077] Furthermore, three positioning posts 208 are provided at the bottom of the lens 20, and three positioning holes are provided on the fixing structure 30 with each lamp bead 101 as the center. The positioning holes are set one-to-one with the positioning posts 208 to ensure that the lamp bead 101 and the lens 20 are coaxial during installation.

[0078] Of course, the lighting fixture also includes a driver and a heat sink. The driver is electrically connected to the light source module to realize the opening and closing of the light source module. How the driver realizes the opening and closing of the light source module can be directly adopted using existing technology, which will not be elaborated here. The heat sink is used to dissipate heat from the light source module and the driver.

[0079] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A light source module, characterized in that, include: The light-emitting unit (10) includes four LED beads (101) arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction. Each LED bead (101) includes four chips (1011) arranged in two columns along the first direction and in two rows along the second direction. The four chips (1011) in each LED bead (101) emit different colors. For two adjacent LED beads (101) in the first direction, the light emission colors of the two adjacent chips (1011) in the first direction are different; For two adjacent LED beads (101) in the second direction, the light emission colors of the two adjacent chips (1011) in the second direction are different; The lens (20) includes an incident end (201), the lens (20) is disposed corresponding to the lamp bead (101), and the lamp bead (101) is disposed at the incident end (201).

2. The light source module according to claim 1, characterized in that: The lens (20) is a total internal reflection lens.

3. The light source module according to claim 1, characterized in that: In the light-emitting unit (10), and in the two lamp beads (101) located diagonally, the color arrangement of the chip (1011) of one lamp bead (101) after rotating 180 degrees around its geometric center is consistent with the color arrangement of the chip (1011) of the other lamp bead (101).

4. The light source module according to any one of claims 1-3, characterized in that: The lens (20) further includes an exit end (202), which is disposed opposite to the incident end (201); The incident end (201) is provided with an incident cavity (203), and the exit end (202) is provided with an exit surface (204). The light beam emitted by the light-emitting unit (10) enters through the incident cavity (203) and exits through the exit surface (204).

5. The light source module according to claim 4, characterized in that: The side of the incident cavity (203) is provided with a first incident surface (205), and the end face of the incident cavity (203) is provided with a second incident surface (206). The lens (20) has a total reflection surface (207) on its side. In this process, a portion of the light beam emitted by the lamp bead (101) into the incident cavity (203) enters the lens (20) through the first incident surface (205), and after total internal reflection at the total reflection surface (207), it exits from the exit surface (204). In this process, a portion of the light beam emitted by the lamp bead (101) into the incident cavity (203) enters the lens (20) through the second incident surface (206) and then exits from the exit surface (204).

6. The light source module according to claim 4, characterized in that: The geometric center of the lamp bead (101) is located on the central axis of the lens (20).

7. The light source module according to claim 5, characterized in that: The edges of the exit surface (204) and the total reflection surface (207) are spaced apart by a distance H1 along the central axis of the lens (20), where H1 ranges from 0.5 mm to 2 mm.

8. The light source module according to claim 4, characterized in that: The distance between the geometric centers of two adjacent LED beads (101) in the first direction is H2, the distance between the geometric centers of two adjacent LED beads (101) in the second direction is H3, the diameter of the emission surface (204) is Φ, and H2=H3≥Φ.

9. The light source module according to claim 4, characterized in that: The exit surface (204) is a fog surface.

10. A lamp, characterized in that, It includes a fixed structure (30) and at least one light source module as described in any one of claims 1-9, the light source module being disposed on the fixed structure (30).

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