Light source module and lamp

Abstract

The present application relates to the technical field of illumination, and discloses a light source module and a lamp. The light source module comprises a light source, a first reflector, and a light distribution assembly, wherein the first reflector is provided with a first light inlet, a first light outlet, and a first reflecting surface, the first reflecting surface is connected between the first light inlet and the first light outlet, and the light source is arranged at the first light inlet; the light distribution assembly is arranged in an accommodating cavity of the first reflector, the light distribution assembly is located on a main optical axis of the light source, the first reflecting surface and the light distribution assembly both face the light source, light emitted by the light source passes through the first reflecting surface and the light distribution assembly to form parallel light beams, and the parallel light beams are emitted from the first light outlet.

Description

Light source modules and lamps

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311872720.2, and invention name “Light source module and lamp”, and the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202323669623.1, and utility model name “Light source module and lamp”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of lighting technology, and specifically relates to a light source module and a lamp. Background Art

[0004] With the development of lighting technology, lamps are not only used for illumination, but also for environmental decoration. For example, they can create and enrich the visual effects of a space through light and shadow effects, or use lighting changes to create an ambient atmosphere. However, the light source modules of some lamps currently on the market have uneven light distribution, resulting in stray light and secondary light spots in the light spots, which affects the lighting effect. Summary of the Invention

[0005] The purpose of this application is to provide a light source module and a lamp.

[0006] In the first aspect, the technical solution of the present application provides a light source module, including a light source, a first reflector and a light distribution component, the first reflector is provided with a first light inlet, a first light outlet and a first reflecting surface, the first reflecting surface is connected between the first light inlet and the first light outlet, and the light source is arranged at the first light inlet; the light distribution component is arranged in the accommodating cavity of the first reflector, and the light distribution component is located on the main optical axis of the light source, the first reflecting surface and the light distribution component are both facing the light source, and the light emitted by the light source forms a parallel light beam after passing through the first reflecting surface and the light distribution component, and the parallel light beam is emitted from the first light outlet.

[0007] In a second aspect, an embodiment of the present application further provides a lamp, comprising a lamp body and the above-mentioned light source module, wherein the light source module is arranged on the lamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic structural diagram of a light source module according to an embodiment of the present application.

[0009] Explanation of the reference numerals: 100 - light source; 200 - first reflector, 210 - first light inlet, 220 - first light outlet, 230 - first reflecting surface; 300 - light distribution assembly, 310 - second reflector, 311 - second light inlet, 312 - second light outlet, 313 - second reflecting surface, 320 - lens, 321 - light outlet surface, 322 - flange; 400 - light shield, 410 - annular light blocking portion; 500 - mounting plate. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0011] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0012] The light source module and lamp provided by the technical solution of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0013] As shown in FIG1 , an embodiment of the present application provides a light source module, which includes a light source 100 , a first reflector 200 and a light distribution assembly 300 .

[0014] In one embodiment, the light source 100 may be an LED lamp, and may also be other types of light sources, which is not specifically limited in this embodiment of the present application.

[0015] In one embodiment, the light source module also includes a mounting plate 500, and the light source 100 is arranged on the mounting plate 500. The light source 100 can be located in the first light entrance 210, and the mounting plate 500 can cover the first light entrance 210; or, part of the mounting plate 500 is located in the first light entrance 210, and the peripheral surface of the mounting plate 500 is in contact with the first light entrance 210, thereby blocking the first light entrance 210 to prevent the light emitted by the light source 100 from being emitted from the first light entrance 210 and causing light leakage.

[0016] The first reflector 200 is provided with a first light inlet 210, a first light outlet 220, and a first reflective surface 230. The first reflective surface 230 is connected between the first light inlet 210 and the first light outlet 220 and faces the first light inlet 210 and the first light outlet 220, respectively. The light source 100 is disposed at the first light inlet 210, that is, light emitted by the light source 100 enters the receiving cavity of the first reflector 200 through the first light inlet 210. In one embodiment, the first reflector 200 may be a reflective cup, which has the function of converging light, thereby improving the utilization rate of the light emitted by the light source 100.

[0017] The light distribution assembly 300 is disposed within the housing cavity of the first reflector 200 and is located on the principal optical axis of the light source 100. In one embodiment, the light distribution assembly 300 can be disposed within the housing cavity of the first reflector 200 via an additional bracket or other component. The first reflective surface 230 and the light distribution assembly 300 both face the light source 100, and the light distribution assembly 300 faces the first light inlet 210 and the first light outlet 220, respectively. Light emitted from the light source 100 forms a parallel beam after passing through the first reflective surface 230 and the light distribution assembly 300. This parallel beam is then emitted from the first light outlet 220. Specifically, of the light emitted from the light source 100, a portion of the light is directed toward the first reflective surface 230, where it is reflected to form a parallel beam that is then emitted from the first light outlet 220. Another portion of the light is directed toward the light distribution assembly 300, where it is distributed and shaped to form a parallel beam that is then emitted from the first light outlet 220.

[0018] In the light source module provided by the technical solution of the present application, an additional light distribution assembly 300 is provided within the accommodating cavity of the first reflector 200, and the light distribution assembly 300 is located on the principal optical axis of the light source 100. Light emitted by the light source 100 forms a parallel light beam after passing through the first reflective surface 230 and the light distribution assembly 300, and then is emitted from the first light outlet 220. In other words, all light emitted from the first light outlet 220 is shaped by the first reflective surface 230 and the light distribution assembly 300 to reduce stray light, thereby forming a parallel light beam, improving the uniformity of the light emitted from the first light outlet 220, and thus avoiding the formation of secondary light spots. Therefore, the embodiments of the present application are conducive to solving the problem of secondary light spots in the light spots formed by the light emitted by the current light source module.

[0019] It should be noted that since the light emitted by the light source 100 is scattered, the scattered light is changed in propagation direction by the first reflector 200 and the light distribution component 300 to form a parallel light beam. At this time, the boundary of the light spot formed by this part of the light is clearer, which is beneficial to improving the lighting effect.

[0020] In one embodiment, the curved surface formed by rotating the line connecting the center point of the light source 100 and the edge of the first light outlet 220 around the principal optical axis of the light source 100 intersects with the second light inlet 311 of the light distribution component 300. That is, of all the light rays entering the first light inlet 210, some of the light rays are directed toward the first reflective surface 230, and the remaining light rays are directed toward the light distribution component 300, to ensure that all light rays emitted from the first light outlet 220 are shaped, thereby improving the uniformity of the light rays emitted from the first light outlet 220. Of course, in other embodiments, the curved surface formed by rotating the line connecting the center point of the light source 100 and the edge of the first light outlet 220 around the principal optical axis of the light source 100 may not intersect with the second light inlet 312, but may be as close to the second light inlet 312 as possible.

[0021] In one embodiment, the light distribution component 300 includes a second reflector 310, which is provided with a second light inlet 311, a second light outlet 312 and a second reflective surface 313. The second reflective surface 313 is connected between the second light inlet 311 and the second light outlet 312. In one embodiment, the second reflector 310 can be a reflective cup, which has the function of gathering light. The second light inlet 311 faces the light source 100, that is, the second light inlet 311 faces the first light inlet 210, and the second light outlet 312 faces the first light outlet 220. A portion of light passing through the second light inlet 311 is reflected by the second reflective surface 313 and then emitted from the second light outlet 312. That is, light entering the second reflector 310 is reflected by the second reflective surface 313 and then emitted from the second light outlet 312. This removes stray light from the light entering the second reflector 310, thereby shaping this portion of light so that it is emitted in a direction parallel to the main optical axis of the light source 100, thereby improving the uniformity of this portion of light. Of course, the second reflector 310 can also be a collimator, etc.

[0022] In one embodiment, the structure of the second reflector 310 may be similar to or identical to that of the first reflector 200 , so that the light reflected by the second reflective surface 313 directly forms a parallel light beam and then is emitted from the first light outlet 220 .

[0023] Alternatively, in other embodiments, the light distribution assembly 300 further includes a lens 320 connected to the second reflector 310. The lens 320 is disposed between the second light outlet 312 and the first light outlet 220. The side of the lens 320 facing away from the second reflector 310 is provided with a light outlet surface 321. Light emitted from the second light outlet 312 forms the aforementioned partially parallel light beam after passing through the lens 320. In other words, the light entering the second light inlet 311 first undergoes a shaping operation by changing its propagation path through the second reflective surface 313, and then undergoes a further shaping operation by changing its propagation path through the lens 320, thereby further removing stray light from this portion of light and improving the uniformity of the central light beam.

[0024] In the above embodiment, the focal point of the light-emitting surface 321 can be located on the central axis of the second light-emitting port 312, and this focal point can be located on the side of the light-emitting surface 321 facing away from the first light-emitting port 220. The second reflective surface 313 is an arc-shaped concave surface. Light entering the second light-inlet 311 is reflected by the second reflective surface 313 and converges at the focal point of the light-emitting surface 321. The central axis of the second light-outlet 312 coincides with the principal optical axis of the light source 100. In this case, among the light rays emitted by the light source 100, the light rays entering the second light-inlet 311, with the principal optical axis as its central axis, first travel toward the second reflective surface 313 and converge at the focal point of the light-emitting surface 321. The light rays are then diffused by the lens 320 before being emitted from the first light-emitting port 220, thereby improving the utilization efficiency of the light rays entering the second light-inlet 311.

[0025] In one embodiment, lens 320 is a convex lens. The second reflective surface 313 first focuses the light entering the second light inlet 311, and then diffuses it through lens 320. In this case, the second reflector 310 and lens 320 are both relatively small, so that the light distribution assembly 300 occupies less space within the housing of the first reflector 200. Of course, lens 320 can also be a concave lens. In this case, the light exit surface 321 is a curved concave surface, which requires increasing the volume of both the second reflector 310 and lens 320.

[0026] In one embodiment, the focus of the light emitting surface 321 can be located on the side of the second light outlet 312 close to the light source 100, or on the side close to the first light outlet 220, but in both cases, the second light outlet 312 must be large enough to facilitate light passing through.

[0027] In some other embodiments, the focus of the light-emitting surface 321 coincides with the center point of the second light-emitting port 312. In this case, the size of the second light-emitting port 312 can be set smaller, thereby reducing the volume of the second reflector 310, and further reducing the space occupied by the light distribution component 300 in the accommodating cavity of the first reflector 200.

[0028] In one embodiment, both the first reflecting surface 230 and the second reflecting surface 313 can be planes; or, in other embodiments, at least one of the first reflecting surface 230 and the second reflecting surface 313 is a curved concave surface. Since the curved concave surface has the function of gathering light, it can not only improve the utilization rate of light, but also reduce the size of the first reflector 200 and the second reflector 310.

[0029] In one embodiment, the second light entrance 311 of the second reflector 310 is larger than the second light exit 312, that is, the second reflective surface 313 has a contracted structure. In this case, the second reflective surface 313 can focus the light entering the second light entrance 311, thereby reducing the size of the second reflector 310. Of course, the second light entrance 311 of the second reflector 310 can also be smaller than the second light exit 312.

[0030] It should be noted that when the second light entrance 311 is larger than the second light exit 312 , the shape of the second reflector 310 may be the same as or similar to that of the first reflector 200 , and this embodiment of the present application does not impose any limitation on this.

[0031] In one embodiment, the lens 320 may be directly attached to a surface of the second reflector 310 facing the lens 320 , for example, by bonding or the like.

[0032] In another embodiment, the lens 320 has a flange portion 322 at one end close to the second reflector 310, and the flange portion 322 is in contact with the side of the second reflector 310 facing the lens 320. In this case, the connection area between the lens 320 and the second reflector 310 can be increased, thereby improving the connection strength between the two.

[0033] In one embodiment, one of the flange portion 322 and the second reflector 310 may be provided with a positioning groove, and the other may be provided with a positioning protrusion. The positioning protrusion and the positioning groove are positioned and matched, which not only facilitates installation, but also can further increase the connection area between the two and improve the connection stability.

[0034] Furthermore, in one embodiment, the above-mentioned positioning groove and positioning protrusion can both be annular structures to further play a light-shielding role, preventing a small amount of stray light from being emitted from the assembly gap between the lens 320 and the second reflector 310 and causing light leakage, thereby improving the utilization rate of light in the second reflector 310.

[0035] In some embodiments, the light source module further includes a light shield 400. In one embodiment, the light shield 400 may be a cylindrical structure.

[0036] The light shield 400 is arranged at the end of the first reflector 200 away from the light source 100, and the accommodating space of the light shield 400 is connected to the first light outlet 220 so that the parallel light beam mentioned above can be emitted through the light shield 400. The inner wall of the light shield 400 is provided with a plurality of grooves along its circumference, which can further remove stray light in the light emitted from the first light outlet 220, thereby improving the clarity of the light spot boundary, and further improving the overall illumination effect of the light source module.

[0037] In one embodiment, each groove is a strip groove, and the extension direction of the strip groove is the same as the extension direction of the light shield 400, that is, the extension direction of the groove is the same as the propagation direction of the light, avoiding blocking part of the edge light and causing light loss.

[0038] In one embodiment, the cross-sectional area of ​​the groove may be rectangular or semicircular; or, the groove includes a first inclined surface and a second inclined surface connected to each other, that is, the cross-sectional area of ​​the groove is V-shaped, which can not only absorb stray light but also ensure the structural strength of the sunshade 400.

[0039] In one embodiment, adjacent grooves can be arranged at intervals along the circumference of the light shield 400; or, the first inclined surface of adjacent grooves is connected to the second inclined surface, that is, multiple grooves are connected in sequence along the circumference of the light shield 400, thereby improving its effect of absorbing stray light.

[0040] It should be noted that the shapes of the multiple grooves can be the same for ease of manufacturing, and of course they can also be different (for example, some grooves are V-shaped structures, and other grooves are U-shaped structures). The embodiments of the present application do not impose specific restrictions on this.

[0041] In addition, when the shapes of multiple grooves are the same, the sizes of the grooves (such as groove depth and groove width) can be the same or different, and the embodiments of the present application do not impose any specific restrictions on this.

[0042] In some embodiments, the cross-sectional areas of the first reflector 200 and the light shield 400 gradually increase as the first reflector 200 extends toward the light shield 400. This improves the continuity of the outer surface of the entire light source module, facilitating assembly and enhancing the aesthetics of the light source module. Of course, the cross-sectional areas of the light shield 400 can also be equal at all locations along the axial direction of the light shield 400.

[0043] In one embodiment, the maximum cross-sectional area of ​​the first reflector 200 can be equal to the minimum cross-sectional area of ​​the light shield 400. In other words, in the direction of the main optical axis of the light source 100, the projection contour line of the first light outlet 220 coincides with the projection contour line of the light entrance of the light-transmitting cover 400, thereby facilitating that all light emitted from the first reflector 200 enters the light shield 400, while improving the continuity and aesthetics of the outer side of the light source module.

[0044] In one embodiment, the end surface of the light shield 400 and the end surface of the first reflector 200 can be bonded by adhesive to prevent light leakage. However, since both are hard structures, the connection process has high requirements and the assembly is difficult.

[0045] Alternatively, in some other embodiments, an annular light-blocking portion 410 is provided on the outer circumference of the light shield 400. The annular light-blocking portion 410 covers the mating gap between the light shield 400 and the first reflector 200. The annular light-blocking portion 410 cooperates with the first reflector 200 to prevent some light from escaping from the mating gap between the light shield 400 and the first reflector 200. The annular light-blocking portion 410 here can achieve a good light-blocking effect. Therefore, a high degree of sealing is not required between the end face of the light shield 400 and the end face of the first reflector 200. Therefore, this embodiment can reduce the sealing requirements between the two.

[0046] In one embodiment, the inner circumference of the light shield 400 and the outer circumference of the first reflector 200 can be fitted together, thereby further improving the light shielding effect of the light shield 400 . In this case, the difficulty of connecting the light shield 400 and the first reflector 200 can be reduced.

[0047] Based on the light source module disclosed in the embodiments of the present application, the embodiments of the present application further disclose a lamp, which includes a lamp body and the light source module described in any of the above embodiments, and the light source module is arranged on the lamp body.

[0048] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A light source module, wherein, It includes a light source (100), a first reflector (200) and a light distribution component (300). The first reflector (200) is provided with a first light inlet (210), a first light outlet (220) and a first reflecting surface (230). The first reflecting surface (230) is connected between the first light inlet (210) and the first light outlet (220), and the light source (100) is arranged at the first light inlet (210). The light distribution component (300) is arranged in the accommodation cavity of the first reflector (200), and the light distribution component (300) is located on the main optical axis of the light source (100). Both the first reflecting surface (230) and the light distribution component (300) face the light source (100). The light emitted by the light source (100) forms a parallel light beam after passing through the first reflecting surface (230) and the light distribution component (300), and the parallel light beam is emitted from the first light outlet (220).

2. The light source module according to claim 1, wherein, The curved surface formed by the connection line between the center point of the light source (100) and the edge of the first light outlet (220) rotating around the main optical axis of the light source (100) intersects with the second light inlet (311) of the light distribution component (300).

3. The light source module according to claim 2, wherein, The light distribution component (300) includes a second reflector (310). The second reflector (310) is provided with the second light inlet (311), a second light outlet (312) and a second reflecting surface (313). The second reflecting surface (313) is connected between the second light inlet (311) and the second light outlet (312). The second light inlet (311) faces the light source (100), and the second light outlet (312) faces the first light outlet (220). Part of the light passes through the second light inlet (311), is reflected by the second reflecting surface (313) and then is emitted from the second light outlet (312).

4. The light source module according to claim 3, wherein, The light distribution component further includes a lens (320) connected to the second reflector (310). The lens (320) is arranged between the second light outlet (312) and the first light outlet (220). The side of the lens (320) facing away from the second reflector (310) is provided with a light-emitting surface (321). The light emitted from the second light outlet (312) forms part of the parallel light beam after passing through the lens (320).

5. The light source module according to claim 4, wherein, The lens (320) is a convex lens.

6. The light source module according to claim 4, wherein, One end of the lens (320) close to the second reflector (310) has a flange portion (322), and the flange portion (322) is attached to the surface of the second reflector (310) facing the lens (320).

7. The light source module according to claim 3, wherein, At least one of the first reflecting surface (230) and the second reflecting surface (313) is an arc-shaped concave surface.

8. The light source module according to claim 3, wherein, The second light inlet (311) is larger than the second light outlet (312).

9. The light source module according to claim 1, wherein, The light source module further includes: a light-shielding cover (400), the light-shielding cover (400) is disposed at an end of the first reflector (200) away from the light source (100), a receiving space of the light-shielding cover (400) is communicated with the first light outlet (220), so that the parallel light beam passes through the light-shielding cover (400) and is emitted, and a plurality of grooves are provided on an inner side wall of the light-shielding cover (400) along its circumference.

10. The light source module according to claim 9, wherein, Each of the grooves is a strip-shaped groove, an extending direction of the strip-shaped groove is the same as an extending direction of the light-shielding cover (400), the groove includes a connected first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface of adjacent grooves are connected.

11. The light source module according to claim 9, wherein, In an extending direction of the first reflector (200) towards the light-shielding cover (400), cross-sectional areas of both the first reflector (200) and the light-shielding cover (400) gradually increase; An outer peripheral surface of the light-shielding cover (400) is provided with an annular light-blocking portion (410), the annular light-blocking portion (410) covers a fitting gap between the light-shielding cover (400) and the first reflector (200), and the annular light-blocking portion (410) is fitted with the first reflector (200).

12. A lighting fixture, wherein, The lamp includes a lamp body and the light source module according to any one of claims 1 to 11, and the light source module is disposed on the lamp body.

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