Light source module and linear lamp
By introducing primary and secondary light mixing components into the light source module and utilizing microstructure reflection and diffusion technology, the problem of uneven light distribution in decorative linear lights has been solved, achieving uniform brightness and aesthetic effect for narrow-line lamps.
Patent Information
- Application Number
- CN202520503527.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing decorative linear lights suffer from concentrated light energy within a narrow angle range, resulting in an overly bright center and darker edges. Furthermore, the large size of the lights makes it difficult to achieve uniform brightness and aesthetics in narrow linear lighting fixtures.
The system employs a combination of primary and secondary light mixing components. By utilizing the reflective and incident light surfaces with microstructures, light is reflected and mixed to form a linear light spot with uniform brightness. The primary light mixing component performs initial light mixing, while the secondary light mixing component further diffuses and modulates the light energy.
By creating a linear light spot with uniform brightness transition within a narrower light emission dimension, abrupt bright or dark spots are eliminated, reducing the size of the luminaire and enhancing its aesthetics.
Smart Images
Figure CN223840226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a light source module and a linear luminaire, belonging to the field of lighting technology. Background Technology
[0002] Currently available decorative linear lights mostly use the traditional solution of light strips plus diffuser materials to mix the light. The light strips themselves are relatively large, and the direct-down light output of LEDs concentrates the light energy within a small angle range, resulting in problems such as the center being too bright, the edges being too dark, and even sudden changes in brightness. The only way to improve this is by widening and thickening the size of the linear light body, which makes it less refined and aesthetically pleasing as a linear light.
[0003] In view of this, it is indeed necessary to improve the existing linear lights to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a light source module that can form a linear light spot with a relatively uniform brightness transition in a narrow light emission dimension, without any sudden bright or dark spots.
[0005] To achieve the above objectives, this utility model provides a light source module, comprising:
[0006] Light-emitting components;
[0007] A primary light mixing component, located on the light-emitting side of the light-emitting component, is provided with a reflective surface with a first microstructure to reflect and initially mix part of the light emitted by the light-emitting component;
[0008] The secondary light mixing component is assembled on the light-emitting side of the primary light mixing component. It has a light-incident surface with a second microstructure to mix and emit the light directly incident from the light-emitting component and the light reflected by the primary light mixing component.
[0009] Optionally, the light-emitting component, the primary light-mixing component, and the secondary light-mixing component together define the light-mixing cavity, and the inner diameter of the light-mixing cavity gradually increases from the light-emitting component toward the secondary light-mixing component.
[0010] Optional, primary light mixing components include:
[0011] The reflective part extends along the longitudinal direction of the light source module and is arranged around the outside of the light-emitting component;
[0012] The mounting section is formed by a vertical bend from the end of the reflective section, and the secondary light mixing component is mounted on the mounting section.
[0013] Optionally, the reflective surface is located on the inner wall of the reflective part and forms the inner peripheral wall of the light mixing cavity.
[0014] Optionally, the first microstructure is arranged in a stepped pattern. The first microstructure can disrupt the light energy concentrated on the reflective surface, effectively eliminating the abrupt bright line at the edge of the ultra-narrow light-emitting surface of the linear luminaire.
[0015] Optionally, the secondary light-mixing element is positioned opposite to the light-emitting component, and the thickness of the secondary light-mixing element is configured to gradually increase from the edge towards the center. This initially reduces the light energy projected from the center of the light-emitting component onto the light-emitting surface.
[0016] Optionally, the incident light surface protrudes toward the mixing cavity and is connected to the reflecting surface. The secondary mixing component also has an exiting light surface opposite to the incident light surface, and the exiting light surface is planar.
[0017] Optionally, the second microstructure is an array of prismatic microstructures disposed on the light-incident surface, and the protrusion trend of several prismatic microstructures gradually flattens outward from the center of the secondary light-mixing element towards the edge. The second microstructure further diffuses the light emitted to the secondary light-mixing element, effectively improving the brightness uniformity of the light-emitting surface.
[0018] Optionally, the light-emitting component uses a Lambertian light source.
[0019] Another objective of this invention is to provide a linear luminaire having the aforementioned light source module.
[0020] To achieve the above objectives, this utility model provides a linear lighting fixture, comprising:
[0021] Lamp body;
[0022] The aforementioned light source module is assembled into the lamp body.
[0023] The beneficial effects of this invention are as follows: The light source module of this invention places a primary light-mixing component on the light-emitting side of the light-emitting component and assembles a secondary light-mixing component on the light-emitting side of the primary light-mixing component. This allows the primary light-mixing component, with its first microstructure-covered reflective surface, to reflect and initially mix a portion of the light emitted from the light-emitting component. Then, the secondary light-mixing component, with its second microstructure-covered incident light surface, mixes the light directly incident on the light-emitting component and the light reflected by the primary light-mixing component before emitting it. Compared to existing technologies, the light source module of this invention can form a linear light spot with a relatively uniform brightness transition within a narrow light-emitting dimension, without any sudden bright or dark spots. Attached Figure Description
[0024] Figure 1 This is a cross-sectional view of the light source module of this utility model.
[0025] Figure 2 yes Figure 1 A three-dimensional structural diagram of a primary light mixing component.
[0026] Figure 3 yes Figure 2 Optical path diagram inside the intermediate level light mixing component.
[0027] Figure 4 yes Figure 1 A three-dimensional structural diagram of the intermediate-level light mixing component.
[0028] Figure 5 yes Figure 4 Optical path diagram inside the secondary light mixing component.
[0029] Figure 6 This is a simulation diagram of the brightness of the light-emitting surface of the light source module of this utility model.
[0030] Figure 7 This is a tangential brightness transition diagram of the light-emitting surface of the light source module of this utility model.
[0031] Figure label:
[0032] 100-Light Source Module;
[0033] 1-Light-emitting component; 11-Circuit board; 12-Light source; 2-Primary light mixing component; 21-Reflective part; 22-Mounting part; 221-Clip groove; 23-Reflective surface; 231-First microstructure; 3-Secondary light mixing component; 31-Light incident surface; 311-Second microstructure; 32-Light emitting surface; 33-Fastener; 4-Light mixing cavity. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Please see Figures 1-7 As shown, this utility model discloses a linear luminaire for decorative lighting. The linear luminaire includes a lamp body (not shown) and a light source module 100 assembled on the lamp body. The light source module 100 can form a linear light spot with a relatively uniform brightness transition in a narrow light emission dimension, and can reduce the overall size of the linear luminaire, improve its aesthetics, and be applied to more scenarios.
[0036] The light source module 100 includes a light-emitting component 1, a primary light-mixing component 2 located on the light-emitting side of the light-emitting component 1, and a secondary light-mixing component 3 assembled on the light-emitting side of the primary light-mixing component 2. That is, the secondary light-mixing component 3 is located on the side of the primary light-mixing component 2 away from the light-emitting component 1. The primary light-mixing component 2 can reflect and initially mix some of the light emitted from the light-emitting component 1, and the secondary light-mixing component 3 can mix and emit the light directly incident on the light-emitting component 1 and the light reflected by the primary light-mixing component 2, so that the light-emitting surface of the light source module 100 has uniform brightness.
[0037] Specifically, the light source module 100 has a longitudinal direction, such as... Figure 2 The arrows indicate the direction. The light-emitting component 1, the primary light-mixing component 2, and the secondary light-mixing component 3 together define the light-mixing cavity 4, as shown. Figure 1 As shown. The light mixing cavity 4 extends along the longitudinal direction and is preferably an ultra-narrow linear light mixing cavity. The inner diameter of the light mixing cavity 4 gradually increases from the self-emitting component 1 toward the secondary light mixing component 3. In this embodiment, the light-emitting component 1 includes a circuit board 11 extending along the longitudinal direction and a plurality of light sources 12 uniformly arranged on the circuit board 11. The light sources 12 are housed in the light mixing cavity 4, so that all the light emitted by the light sources 12 can be emitted after being acted upon by the primary light mixing component 2 and the secondary light mixing component 3 within the light mixing cavity 4. Preferably, the light source 12 is a Lambertian light source with a size of less than 3mm*3mm.
[0038] The primary light mixing component 2 includes a reflective portion 21 extending along the longitudinal direction of the light source module 100 and a mounting portion 22 formed by a vertical bend from the end of the reflective portion 21. The reflective portion 21 is arranged around the outside of the light-emitting component 1. Specifically, the reflective portion 21 is connected to the circuit board 11 and surrounds the outside of a plurality of light sources 12. The secondary light mixing component 3 is mounted on the mounting portion 22.
[0039] The reflective surface 23 of the primary light mixing element 2 is disposed on the inner sidewall of the reflective part 21, forming the inner peripheral wall of the light mixing cavity 4. The reflective surface 23 has a first microstructure 231. In this embodiment, part of the light emitted from the light source 12 is incident on the reflective surface 23 and dispersed into several small beams by the first microstructure 231, so that the light energy concentrated on the reflective surface 23 is dispersed, which can effectively eliminate the abrupt bright line at the edge of the ultra-narrow light-emitting surface of the linear lamp, specifically as follows: Figure 3 and Figure 6 As shown, the reflective surface 23 with the first microstructure 231 reflects and initially mixes some of the light emitted from the light-emitting component 1. Preferably, the first microstructure 231 is arranged in a stepped shape that is parallel, equidistant, of equal height, and linearly staggered. Of course, in other optional embodiments, the first microstructure 231 can also be set as a structure of other shapes, as long as it can disperse the light irradiated onto the reflective surface 23 for reflection and mixing.
[0040] In this embodiment, the primary light-mixing component 2 is made of plastic and manufactured by injection molding. The reflective surface 23 is formed by spraying a white, opaque reflective paint onto the inner surface of the primary light-mixing component 2. The reflectivity of the reflective surface 23 is above 80%, and the absorptivity is below 5%. Optionally, the first microstructure 231 can be formed during the injection molding stage or during the reflective paint spraying stage; there is no limitation on this.
[0041] like Figure 1As shown, the secondary light-mixing element 3 extends longitudinally and is positioned opposite to the light-emitting component 1. The thickness of the secondary light-mixing element 3 gradually increases from the edge towards the center. The light-incident surface 31 of the secondary light-mixing element 3 protrudes towards the light-mixing cavity 4 and is connected to the reflective surface 23. The light-incident surface 31 of the secondary light-mixing element 3 has a second microstructure 311. Light rays directly incident from the light source 12 and light rays reflected by the primary light-mixing element 2 are refracted after passing through the second microstructure 311 and diffused towards the edge, achieving the purpose of light mixing.
[0042] Specifically, since the light energy within a 12-small-angle radius of the light source accounts for more than 85% of the total radiant energy (i.e., high brightness at the center and low brightness around the edges), the light energy within a 12-small-angle radius of the light source can be further modulated after passing through the secondary light mixing element 3. Specifically, as follows... Figure 5 and Figure 7 As shown.
[0043] By setting the thickness of the secondary light mixer 3 to gradually increase from the edge to the center, the light energy projected onto the emitting surface from the center (small angle) of the light source 12 can be initially reduced. Furthermore, the second microstructure 311 further disperses and refracts the light emitted to the secondary light mixer 3, effectively improving the brightness uniformity of the linear luminaire's emitting surface. The small angle is approximately ±60°.
[0044] In this embodiment, the second microstructure 311 is an array of prismatic microstructures disposed on the light-incident surface 31, and the protrusion trend of several prismatic microstructures gradually flattens from the center position of the secondary light-mixing element 3 towards the edge position. Preferably, the second microstructure 311 is defined to have an angle α, which increases in a gradient from the center position towards the edge position. Optionally, the angle α is approximately 90° at the center position and approximately 110° at the edge position, specifically as follows: Figure 5 As shown.
[0045] The secondary light mixing element 3 also has a light emitting surface 32 opposite to the light incident surface 31, and the light emitting surface 32 is planar. In this embodiment, the light emitting surface 32 is the light-emitting surface of the linear lamp. The minimum width of the light mixing cavity 4 in the direction perpendicular to its longitudinal direction can be 4mm, corresponding to a width of 8mm for the light emitting surface 32, thereby forming a linear light spot with brightness that naturally dims from the center to the edge, and the entire light emitting surface has no sudden bright or dark spots.
[0046] like Figure 2 and Figure 4As shown, the secondary light mixing element 3 and the primary light mixing element 2 are connected by a snap-fit mechanism. Specifically, the secondary light mixing element 3 has protruding fasteners 33 on opposite sides, and the mounting portion 22 of the primary light mixing element 2 has corresponding fastening grooves 221 that mate with the fasteners 33. The fasteners 33 and fastening grooves 221 engage to connect the secondary light mixing element 3 and the primary light mixing element 2, further maintaining the connection between the light incident surface 31 and the reflective surface 23. Of course, in other alternative embodiments, the secondary light mixing element 3 can also be fixed to the mounting portion 22 by adhesive.
[0047] In this embodiment, the secondary light mixing element 3 is made of diffusing silicone material. The diffusing silicone material requires that the ratio of the height of the light mixing cavity 4 in the vertical direction to the distance between two adjacent light sources 12 is 1.5 to 2 and the thickness of the diffusing silicone material is 2 mm. The transmittance needs to be controlled between 40 ± 2% so that the light emitted through the second microstructure 311 can be emitted from the light emitting surface 32.
[0048] In summary, the light source module 100 of this invention, by placing the primary light-mixing element 2 on the light-emitting side of the light-emitting component 1 and assembling the secondary light-mixing element 3 on the light-emitting side of the primary light-mixing element 2, can utilize the reflective surface 23 with the first microstructure 231 on the primary light-mixing element 2 to reflect and initially mix part of the light emitted from the light-emitting component 1; then, the light-incident surface 31 with the second microstructure 311 on the secondary light-mixing element 3 is used to mix and emit the light directly incident on the light-emitting component 1 and the light reflected by the primary light-mixing element 2. Compared with the prior art, the light source module 100 of this invention can form a linear light spot with a relatively uniform brightness transition in a narrow light-emitting dimension, without sudden bright or dark spots.
[0049] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.
Claims
1. A light source module, characterized in that, include: Light-emitting component (1); A primary light mixing element (2) is located on the light-emitting side of the light-emitting component (1) and has a reflective surface (23) with a first microstructure (231) to reflect and initially mix some of the light emitted by the light-emitting component (1). The secondary light mixing component (3) is assembled on the light-emitting side of the primary light mixing component (2) and has a light-incident surface (31) with a second microstructure (311). It mixes the light directly incident on the light-emitting component (1) and the light reflected by the primary light mixing component (2) and emits it.
2. The light source module according to claim 1, characterized in that: The light-emitting component (1), the primary light-mixing component (2), and the secondary light-mixing component (3) together define a light-mixing cavity (4), and the inner diameter of the light-mixing cavity (4) gradually increases from the light-emitting component (1) toward the secondary light-mixing component (3).
3. The light source module according to claim 2, characterized in that: The primary light mixing element (2) includes: The reflective part (21) extends along the longitudinal direction of the light source module and is arranged around the outside of the light-emitting component (1); The mounting part (22) is formed by bending vertically from the end of the reflective part (21), and the secondary light mixing component (3) is mounted on the mounting part (22).
4. The light source module according to claim 3, characterized in that: The reflective surface (23) is disposed on the inner sidewall of the reflective part (21) and forms the inner peripheral wall of the light mixing cavity (4).
5. The light source module according to claim 2, characterized in that: The first microstructure (231) is arranged in a stepped manner.
6. The light source module according to claim 2, characterized in that: The secondary light mixing element (3) is disposed opposite to the light emitting component (1), and the thickness of the secondary light mixing element (3) is configured to gradually increase from the edge position toward the center position.
7. The light source module according to claim 6, characterized in that: The light-incident surface (31) protrudes toward the light-mixing cavity (4) and is connected to the reflective surface (23). The secondary light-mixing component (3) is also provided with a light-emitting surface (32) opposite to the light-incident surface (31), and the light-emitting surface (32) is a plane.
8. The light source module according to claim 7, characterized in that: The second microstructure (311) is a prismatic microstructure array disposed on the light incident surface (31), and the protrusion trend of several of the prismatic microstructures gradually becomes gentler from the center position of the secondary light mixing element (3) toward the edge position.
9. The light source module according to claim 1, characterized in that: The light-emitting component (1) adopts a Lambert-type light source.
10. A linear luminaire, characterized in that, include: Lamp body; The light source module according to any one of claims 1-9 is assembled on the lamp body.