Lamp

Abstract

The invention provides a lamp which comprises a light source assembly and a shell, and the light source assembly is installed in the shell and movably connected with the shell. The light mixing assembly is located on a light path of the light rays emitted by the light source assembly and fixedly connected with the light source assembly, and the light mixing assembly is configured to mix the light rays emitted by the light source assembly; the second-stage module comprises a lens and a reflector, the lens is located on the side, back to the light source assembly, of the light mixing assembly, the reflector is located on the side, back to the light source assembly, of the lens, the lens and the reflector are both fixedly connected with the shell, and the light source assembly is located in the shell. The lens is configured to converge light rays emitted by the light mixing assembly, the reflector is configured to filter the light rays refracted by the lens, and the first-stage module can be driven by the first shell to be close to or away from the second-stage module.

Description

Technical Field

[0001] The present invention relates to the field of lighting, and in particular to a lamp capable of controlling the beam angle size. Background Art

[0002] In modern society, the demand for lighting in various scenarios is increasing, and people's requirements for lighting quality are also getting higher and higher.

[0003] Currently, most lamps on the market, especially spotlights, control the light emission angle through TIR lenses. However, the TIR lenses have the problem that the light in the central area is not easy to control. When applied to spotlights, it is easy to produce secondary light spots, resulting in relatively similar visual effects of the wall-washing light spots of spotlights with the same size but different angles, and the distinguishability is relatively low. At the same time, when the light source has multiple spectra, the TIR lenses are also prone to the problem of uneven light color, affecting the quality of the light spots of the spotlights. At the same time, for existing adjustable-focus spotlights, when the focus is adjusted to increase the beam angle of the light emitted by the lamp, the optical efficiency will also decrease accordingly.

[0004] In view of this, it is necessary to provide a lamp to achieve high-quality lighting. Summary of the Invention

[0005] The purpose of the present invention is to provide a lamp that emits high-quality light spots.

[0006] To achieve the above purpose, the present invention provides a lamp, including:

[0007] A housing having a light outlet, including a first housing and a second housing, the first housing being capable of rotating relative to the second housing;

[0008] A first-stage module disposed in the first housing and fixedly connected to the first housing, the first-stage module including: a light source assembly and a light mixing assembly, the light source assembly being configured to emit light; the light mixing assembly is located on the light emission path of the light source assembly and fixedly connected to the light source assembly, and the light mixing assembly is configured to mix the light emitted by the light source assembly;

[0009] A second-stage module disposed relatively close to the light outlet with respect to the first-stage module and fixedly connected to the second housing, including a lens and a reflector, the lens being disposed relatively closer to the light mixing assembly than the reflector, the lens being configured to converge the light emitted from the light mixing assembly, and the reflector being configured to filter the light refracted from the lens;

[0010] The first-stage module can be moved closer to or away from the second-stage module under the drive of the first housing.

[0011] Optionally, the lens includes a light incident surface facing the light source assembly and a light exit surface facing away from the light source assembly. The light incident surface is concave, and the light exit surface is convex. A light control structure is provided on the light exit surface, and the light control structure is configured to mix the light refracted by the lens.

[0012] Optionally, the light exit surface includes a top portion and a side portion. The light control structure includes a plurality of spiral protrusions continuously arranged along the light exit surface. The spiral protrusions protrude outward from the light exit surface and extend spirally from the top portion to the side portion.

[0013] Optionally, from the top portion to the side portion, the cross-sectional area of the spiral protrusion gradually increases.

[0014] Optionally, the light control structure further includes a light transmission region located at the top portion of the light exit surface. The light transmission region includes a plurality of closely arranged sub-light transmission portions, and the plurality of spiral protrusions jointly surround the light transmission region.

[0015] Optionally, the reflector includes an incident port close to the lens, an exit port far from the lens, and a peripheral wall connecting the incident port and the exit port. The area of the exit port is larger than the area of the incident port, and the inner wall of the peripheral wall is black.

[0016] Optionally, the light mixing component includes a light guiding member having a columnar structure. In the height direction of the light guiding member, the cross-section of the columnar structure is rectangular or square. The light guiding member has a light incident end, a light exit end, and a side wall connecting the light incident end and the light exit end. The side length of the light exit end is larger than the side length of the light incident end. The light incident end is connected to the light source assembly, and a plurality of micro-light mixing structures are arranged on the side wall in a circumferential arrangement along the side wall. Each of the protrusions extends from the light incident end to the light exit end.

[0017] Optionally, the micro-light mixing structure is a rib protruding outward from the side wall. In the height direction of the light guiding member, the contour of the cross-section of the rib is arc-shaped.

[0018] Optionally, the light source assembly includes at least two different color light emitting units. The light emitting units of all colors are combined to form a light emitting assembly. The light source assembly includes at least one light emitting assembly, and the light mixing component includes at least one light guiding member. Each light guiding member is arranged corresponding to one light emitting assembly.

[0019] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: In the lamp of the present invention, the light source assembly in the first-level module is fixedly connected to the first housing, and the second-level module composed of the lens and the reflector is fixedly connected to the second housing. By driving the light source assembly to move up and down relative to the second-level module through the first housing, that is, both the lens and the reflector are fixedly connected to the housing, and the light mixing assembly and the light source assembly are movably connected to the housing. By moving the light source assembly and the light mixing assembly together relative to the housing, the beam angle of the light spot emitted by the lamp can be changed, and at the same time, the positions of the lens and the reflector always remain unchanged, and the loss of light during the traveling process is always maintained at a relatively low level, that is, the lamp can always maintain a high optical efficiency. Description of the Drawings

[0020] Figure 1 is a cross-sectional view of the lamp according to an embodiment of the present invention.

[0021] Figure 2 is Figure 1 a front view of the internal partial structure of the shown lamp after removing the housing.

[0022] Figure 3 is Figure 1 a three-dimensional structure diagram of the light guide member in the shown lamp.

[0023] Figure 4 is Figure 1 a three-dimensional structure diagram of the lens in the shown lamp.

[0024] Figure 5 is Figure 1 a three-dimensional view of the internal partial structure of the shown lamp after removing the housing.

[0025] Figure 6 is a plan view of the light source assembly in the lamp according to an embodiment of the present invention.

[0026] Description of the Reference Numerals:

[0027] 100 - lamp;

[0028] 200 - housing, 210 - first housing, 220 - second housing;

[0029] 300 - first-level module, 310 - light source assembly, 311 - light-emitting assembly, 3111 - light-emitting unit, 312 - light source substrate, 320 - light mixing assembly, 321 - light guide member, 3211 - light incident end, 3212 - light exit end, 3213 - side wall, 322 - diffuser, 340 - connecting seat, 341 - connecting surface, 342 - seat cylinder, 343 - connecting column, 350 - heat dissipation device;

[0030] 400 - Secondary module, 410 - Lens, 412 - Light-emitting surface, 4121 - Top, 4122 - Side, 4131 - Spiral protrusion, 4132 - Translucent area, 420 - Reflector, 421 - Incident port, 422 - Exit port, 423 - Peripheral wall, 424 - Connecting buckle. Detailed implementation

[0031] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Here, it should be noted that in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, while other details less related to the present invention are omitted.

[0033] In addition, it should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0034] Please refer to Figures 1-2 As shown, it is a lamp 100 of a preferred embodiment of the present invention. The lamp 100 includes:

[0035] A housing 200 having a light-emitting port. The housing 200 includes a first housing 210 and a second housing 220, and the first housing 210 can rotate relative to the second housing 220;

[0036] A primary module 300 disposed in the first housing 210 and fixedly connected to the first housing 210. The primary module 300 includes a light source assembly 310 and a light mixing assembly 320. The light source assembly 310 is configured to emit light; the light mixing assembly 320 is located on the light-emitting path of the light source assembly 310 and fixedly connected to the light source assembly 310, and the light mixing assembly 320 is configured to mix the light emitted by the light source assembly 310;

[0037] A secondary module 400 disposed relatively closer to the light-emitting port than the primary module 300 and fixedly connected to the second housing 220. The secondary module 400 includes a lens 410 and a reflector 420. The lens 410 is disposed relatively closer to the light mixing assembly 320 than the reflector 420. The lens 410 is configured to converge the light emitted from the light mixing assembly 320, and the reflector 420 is configured to filter the light refracted from the lens 410;

[0038] Driven by the first housing 210, the first-level module 300 can approach or move away from the second-level module 400 to focus the lamp 100 and change the beam angle of the light spot emitted by the lamp 100, that is, change the size of the light spot.

[0039] When it is necessary to change the size of the beam angle, the first housing 210 drives the first-level module 300 to move up and down relative to the second housing 220, so that the first-level module 300 approaches or moves away from the second-level module 400, changing the distance between the second-level module 400 and the first-level module 300, so as to achieve the purpose of changing the beam angle of the lamp 100. When the distance between the second-level module 400 and the light mixing structure is relatively large, the beam angle is relatively small, and when the distance between the second-level module 400 and the light mixing structure is relatively small, the beam angle becomes larger, thus meeting the needs of different occasions and improving the adaptability of the lamp 100. In this embodiment, the range of the beam angle of the light spot emitted by the lamp 100 is between 15° and 70°.

[0040] At the same time, in the present invention, the positional relationship between the lens 410 and the reflector 420 in the second-level module 400 always remains unchanged. When the beam angle becomes larger, the light rays refracted by the lens 410 will still all be emitted outward after passing through the reflector 420, and the loss of light rays is less, and the lamp 100 can still maintain a high optical efficiency.

[0041] In this embodiment, the first housing 210 and the second housing 220 are screwed together. By simply rotating the first housing 210, the first housing 210 can move up and down relative to the second housing 220. The light source assembly 310 is fixedly connected to the first housing 210. The first housing 210 rotates relative to the second housing 220 to drive the light source assembly 310 to move up and down, realizing the focusing function of the lamp 100 to change the beam angle of the light spot emitted by the lamp 100.

[0042] In this embodiment, the light source assembly 310 is fixedly connected to the first housing 210 through a connecting seat 340, as Figure 5 shown. The connecting seat 340 includes a connecting surface 341 for mounting the light source assembly 310, and a seat cylinder 342 extending from the connecting surface 341 in a direction away from the light source assembly 310. A protruding connecting column 343 is provided on the outer side of the cylinder wall of the seat cylinder 342. When connecting the connecting seat 340 to the first housing 210, the connecting column 343 can be inserted into the card slot in the first housing 210, and the assembly is convenient.

[0043] The light mixing assembly 320 includes a light guide member 321 having a columnar structure, as Figure 3As shown, in this embodiment, the cross-section of the columnar structure in the height direction of the light guide 321 is rectangular or square. The light guide 321 includes a light incident end 3211 and a light emitting end 3212. The light incident end 3211 is connected to the light source assembly 310. The shape of the light emitting end 3212 is the same as that of the light incident end 3211, and the side length of the light emitting end 3212 is greater than that of the light incident end 3211. The light guide 321 further includes a side wall 3213 extending from the light emitting end 3212 to the light incident end 3211. The side wall 3213 is provided with a plurality of micro light mixing structures arranged continuously or at intervals along the circumferential direction of the side wall 3213. Each micro light mixing structure extends from the light incident end 3211 to the light emitting end 3212. In this embodiment, the micro light mixing structure is a rib protruding outward from the side wall 3213. In the height direction of the light guide 321, the contour of the cross-section of the rib is arc-shaped. From the light incident end 3211 to the light emitting end 3212, the thickness of the rib remains consistent to enable stable reflection of light. The micro light mixing structures on the side wall 3213 can make the light emitted by the light source assembly 310 reach the total reflection condition during the internal transmission in the light guide 321, increase the path of light in the light guide 321, disrupt the regular light path, and perform sufficient light mixing. At the same time, it can also increase the light transmission efficiency. The area of the light emitting end 3212 is larger than that of the light incident end 3211. The overall conical design of the light guide 321 can make the angle of the light emitted after passing through the light guide 321 wider, which is more conducive to light divergence.

[0044] In this embodiment, the light guide 321 can significantly reduce the length of the light guide 321 by using the protrusions provided on its side wall 3213. The length of the light guide 321 is shortened to about 20 mm, which is 50% shorter than the conventional light guide structure with a length of about 40 mm. Furthermore, it can significantly reduce the size of the lamp 100100, reduce costs, and improve efficiency.

[0045] The lens 410 includes a light incident surface and a light exit surface 412. The light incident surface is located on the side facing the light guide 321 and is a concave surface. The light exit surface 412 is located on the side of the lens 410 facing away from the light guide 321 and is a convex surface. A light control structure is provided on the light exit surface 412. The function of the light control structure is to mix the light refracted by the lens 410. The light exit surface 412 includes a top 4121 and a side 4122. The light control structure includes a number of spiral protrusions 4131 continuously arranged along the light exit surface 412. The spiral protrusions 4131 protrude outward from the light exit surface 412 and extend spirally from the top 4121 to the side 4122. From the top 4121 to the side 4122, the cross-sectional area of the spiral protrusions 4131 gradually increases. The light incident surface of the lens 410 is a concave surface and the light exit surface 412 is a convex surface. This structure can reduce the stray light generated when the light passes through the lens 410, and the spiral protrusions 4131 at the light exit surface 412 can achieve a better light mixing effect, avoiding the generation of secondary light spots. The light spot emitted by the lens 410 is always uniformly cut-off, without stratification, ensuring a high lighting quality.

[0046] As Figure 4 shown, the light control structure further includes a light transmission area 4132 located at the top 4121 of the light exit surface 412. The light transmission area 4132 includes a number of closely arranged sub-light transmission parts. A number of spiral protrusions 4131 jointly surround the light transmission area 4132. The number of closely arranged sub-light transmission parts mix the light emitted from the central area of the top 4121 of the lens 410. Due to manufacturing process and cost considerations, it is difficult for the spiral protrusions 4131 on the lens 410 to intersect at the vertex of the lens 410. A light transmission area 4132 is provided at the top 4121 of the lens 410 to enable all the light passing through the lens 410 to be fully mixed, avoiding stratification of the light spot, and making the light spot cleaner without stray light.

[0047] The reflector 420 includes an incident port 421 close to the lens 410 and an exit port 422 far from the lens 410. The area of the exit port 422 is larger than that of the incident port 421. The reflector 420 further includes a peripheral wall 423 extending from the incident port 421 to the exit port 422. The inner side of the peripheral wall 423 is black, and the peripheral wall 423 is configured to absorb some of the light refracted by the lens 410. The light refracted by the lens 410 will pass through the reflector 420. Some of the light with too large a beam angle or some light with too high a brightness mixed in will be incident on the peripheral wall 423. The black peripheral wall 423 will absorb this part of the light. The stray light in the light after passing through the reflector 420 will be less, the light will be softer, the anti-glare effect will be better, and at the same time, the beam angle of the lamp 100 can be more accurately controlled.

[0048] Connecting buckles 424 are symmetrically arranged on the peripheral wall 423, and clamping grooves are arranged on the inner wall of the second housing 220. When the reflector 420 is installed in the second housing 220, the connecting buckles 424 are clamped with the clamping grooves in the second housing 220 to fixedly connect the reflector 420 and the second housing 220. The assembly is more convenient and fast, and the connection is firm and not easy to loosen.

[0049] The light mixing structure further includes a diffusing member 322. The diffusing member 322 covers the light emitting end 3212 of the light guiding member 321. The diffusing member 322 can enhance the scattering of light. After the light emitted by the light source assembly 310 is mixed by the light guiding member 321 and then diffused by the diffusing member 322, it can become a secondary light source with a larger area, better uniformity, and stable chromaticity. In some embodiments, the diffusing member 322 is a diffusion film, and the diffusion film has good heat resistance. In some embodiments, the diffusing member 322 can also be a lens 410 with a bead surface structure, and the lens 410 with a bead surface structure can also play a good role in scattering light.

[0050] In this embodiment, the light guiding member 321 is transparent in color, and the material used is silica gel or PC. The silica gel or PC material has high transparency and uniformity during the transmission of light, and at the same time has a high refractive index, which can effectively transmit light to the place where lighting is required, reduce the loss during the light transmission process, and improve the light transmission efficiency. In some other embodiments, the light guiding member 321 can also use other materials, and the present invention does not limit this.

[0051] The lamp 100 further includes a heat dissipation device 350. The heat dissipation device 350 is located on the side of the light source assembly 310 facing away from the light mixing structure. When the lamp 100 needs to perform long-term illumination, a relatively high amount of heat will be generated. By providing the heat dissipation device 350, the heat can be dissipated outward, avoiding excessive heat inside the second housing 220 of the lamp 100, and effectively extending the service life of the lamp 100.

[0052] The light source assembly 310 includes at least two different color light emitting units 3111. All the color light emitting units 3111 are combined to form a light emitting assembly 311. At least one light emitting assembly 311 is arranged on the light source substrate 312 in the light source assembly 310. The light guiding member 321 in the light mixing assembly 320 is arranged in one-to-one correspondence with the light emitting assembly 311. The light emitted by the multiple different color light emitting units 3111 in the light emitting assembly 311 is fully mixed by the light guiding member 321 to form a uniform white light color.

[0053] Such as Figure 6As shown, in this embodiment, the light source assembly 310 includes 7 light emitting assemblies 311, each light emitting assembly 311 includes four light emitting units 3111 of different colors, and the light guide 321 is arranged in a one-to-one correspondence with the light emitting assembly 311, so that the four different colors of light in each light emitting unit 3111 are mixed evenly, and the light after mixing between multiple light emitting units 3111 can be closer to the expected light effect. The lens 410 covers the light output ends 3212 of multiple light guides 321. Through the multiple light emitting assemblies 311 arranged in the lamp 100, the lamp 100 can emit a combination of multiple light spots outward, and by using the cooperation of the light guide 321 and the secondary module 400, the light beams in each light spot are more concentrated, and the light spots are not easy to interfere with each other, and the light spots are clearly distinguished.

[0054] The lamp 100 also includes a heat dissipation device 350, which is located in the base tube 342 on the side of the mounting base away from the light source assembly 310. When the lamp 100 needs to be irradiated for a long time, it will generate a high amount of heat. The heat dissipation device 350 can be set to dissipate the heat outward to avoid excessive heat inside the lamp 100, which will cause damage to the light source assembly 310, and effectively extend the service life of the lamp 100.

[0055] To summarize, in the lamp 100 of the present invention, the first shell 210 drives the primary module 300 to move up and down relative to the second shell 220, so that the primary module 300 is close to or away from the secondary module 400, and the distance between the secondary module 400 and the primary module 300 is changed, so as to achieve the purpose of changing the beam angle of the lamp 100. At the same time, in the present invention, the positional relationship between the lens 410 and the reflector 420 in the secondary module 400 remains unchanged. When the beam angle increases, the light emitted after refraction by the lens 410 will still all be emitted outward after passing through the reflector 420, and the loss of light is relatively small. The lamp 100 can still maintain a relatively high optical efficiency. The light control structure on the lens 410 ensures that the light spot projected by the lamp 100 is always cut off evenly, and no secondary light spot is generated. The lamp 100 can always maintain a relatively high quality lighting effect.

[0056] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A lighting fixture, characterized in that, Comprising: A housing (200) having a light-emitting port, including a first housing (210) and a second housing (220), wherein the first housing (210) is capable of rotating relative to the second housing (220); A first-stage module (300) disposed in the first housing (210) and fixedly connected to the first housing (210), the first-stage module (300) including: a light source assembly (310) and a light mixing assembly (320), the light source assembly (310) being configured to emit light; the light mixing assembly (320) being located on the light-emitting path of the light source assembly (310) and fixedly connected to the light source assembly (310), the light mixing assembly (320) being configured to mix the light emitted by the light source assembly (310); A second-stage module (400) disposed closer to the light-emitting port relative to the first-stage module (300) and fixedly connected to the second housing (220), including a lens (410) and a reflector (420), the lens (410) being disposed closer to the light mixing assembly (320) relative to the reflector (420), the lens (410) being configured to converge the light emitted from the light mixing assembly (320), and the reflector (420) being configured to filter the light refracted from the lens (410); The first-stage module (300) can be moved closer to or away from the second-stage module (400) under the drive of the first housing (210).

2. The lamp according to claim 1, characterized in that The lens (410) includes a light-incident surface facing the light source assembly (310) and a light-emitting surface (412) facing away from the light source assembly (310), the light-incident surface being concave, the light-emitting surface (412) being convex, and a light control structure being provided on the light-emitting surface (412), the light control structure being configured to mix the light refracted by the lens (410).

3. The luminaire according to claim 2, characterized in that, The light-emitting surface (412) includes a top (4121) and a side (4122), the light control structure includes a plurality of spiral protrusions (4131) continuously arranged along the light-emitting surface (412), the spiral protrusions (4131) protruding outward from the light-emitting surface (412) and spirally extending from the top (4121) to the side (4122).

4. The luminaire according to claim 3, characterized in that, From the top (4121) to the side (4122), the cross-sectional area of the spiral protrusions (4131) gradually increases.

5. The luminaire according to claim 3, characterized in that, The light control structure further includes a light-transmitting region (4132) located at the top (4121) of the light-emitting surface (412), the light-transmitting region (4132) including a plurality of closely arranged sub-light-transmitting portions, and the plurality of spiral protrusions (4131) jointly surround the light-transmitting region (4132).

6. The luminaire according to any one of claims 1-5, characterized in that, The reflector (420) includes an incident port (421) close to the lens (410), an exit port (422) far from the lens (410), and a peripheral wall (423) connecting the incident port (421) and the exit port (422), the area of the exit port (422) being larger than the area of the incident port (421), and the inner wall of the peripheral wall (423) being black.

7. The luminaire according to any one of claims 1-5, characterized in that, The mixing light component (320) includes a light guide (321) with a columnar structure. In the height direction of the light guide (321), the cross-section of the columnar structure is rectangular or square. The light guide (321) has a light incident end (3211), a light exit end (3212), and a side wall (3213) connecting the light incident end (3211) and the light exit end (3212). The side length of the light exit end (3212) is greater than that of the light incident end (3211). The light incident end (3211) is connected to the light source component (310). A plurality of micro mixing light structures arranged circumferentially along the side wall (3213) are provided on the side wall (3213). Each of the protrusions extends from the light incident end (3211) to the light exit end (3212).

8. The luminaire according to claim 7, characterized in that, The mixing light micro structure is a rib protruding outward from the side wall (3213). In the height direction of the light guide (321), the contour of the cross-section of the rib is arc-shaped.

9. The luminaire according to claim 8, characterized in that, The light source component (310) includes light emitting units (3111) of at least two different colors. The light emitting units (3111) of all colors are combined to form a light emitting component (311). The light source component (310) includes a plurality of light emitting components (311). The mixing light component (320) includes at least one light guide (321). Each light guide (321) is arranged corresponding to the light emitting component (311) one by one.

10. The luminaire according to claim 7, characterized in that, The mixing light component (320) further includes a diffusing member (322). The diffusing member (322) is arranged at the light exit end (3212) and covers the light exit end (3212).

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