Ultrathin down lamp
By designing a combined structure of surface ring, diffuser, light guide plate and reflector in an ultra-thin downlight, the problem of light concentration caused by bright spots is solved, and the uniform distribution and diffusion of light is achieved, and the lighting effect is improved.
Patent Information
- Application Number
- CN202422035581.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In existing ultra-thin downlights, light that has not been refracted by the light guide plate cannot form a scattering effect when passing through the corners of the diffusion cover, resulting in concentrated light spots.
An ultra-thin downlight structure is designed, including a surface ring, a diffuser, a light guide plate, a reflector and a light source. The light source and light guide plate are arranged in the installation cavity. After being refracted through the light guide plate, the light is uniformly projected in the main diffusion area of the diffusion plate. The unrefractive light is refracted through the dispersion area to diffuse to avoid concentration of light.
It effectively avoids the bright spot problem caused by concentration of light, increases the light area and evenly distributes the light, and improves the lighting effect.
Smart Images
Figure CN223076808U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lighting fixtures, and more specifically, relates to an ultra-thin downlight. Background Art
[0002] Downlights usually refer to a type of lamp that places a light source component inside the lamp body and uses the reflective surface of the lamp body to reflect the light emitted by the light source component, thereby emitting uniform light. The light source component usually uses energy-saving lamp beads or LED lamp beads, and the lamp body can use reflective cups, reflective coatings, etc. to help reflect light. By adjusting the parameters of the lamp body, the model of the lamp beads, the installation position, etc., a very flexible lighting effect can be obtained.
[0003] Most of the existing ultra-thin downlights adopt the form of side-lighting, and the side-lighting downlights usually surround the light source outside the light guide plate, and a diffusion cover is provided on the light-emitting side of the light source and the light guide plate, and the diffusion cover projects the light refracted by the light guide plate outward. Since there is a gap between the light source and the light guide plate, it is easy for the light to overflow directly from the gap without being refracted by the light guide plate. The above-mentioned light is directly projected outward through the diffusion cover without being refracted by the light guide plate. Because the connection between the side wall and the bottom plate of the diffusion cover forms a sharp corner, the light that is not refracted by the light guide plate will be projected to the corner, and a bright spot will be generated due to the concentration of light, affecting the light output effect. Utility Model Content
[0004] The utility model aims to provide an ultra-thin downlight, aiming to solve the problem in the prior art that light that has not been refracted by a light guide plate cannot form a scattering effect when passing through the corner of a diffusion cover, resulting in light concentration and bright spots.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] In a first aspect, an ultra-thin downlight is provided, comprising a face ring and a diffuser connected to an opening side of the face ring, the face ring and the diffuser together forming an installation cavity, and further comprising a light guide plate arranged in the installation cavity and a light source arranged outside the light guide plate, and a reflector arranged on a side of the light guide plate away from the diffuser, the diffuser comprising a diffuser plate and a diffuser ring connected to the diffuser plate, the diffuser ring being connected to the face ring, a plate surface of the diffuser plate located in the installation cavity forming a diffuser surface, the diffuser surface comprising a main diffuser area and a dispersed area arranged outside the main diffuser area, the main diffuser area being a plane, and the dispersed area being an arc-shaped surface recessed toward a side away from the light guide plate.
[0007] In a possible implementation, the ultra-thin downlight further includes a focusing ring arranged around the outer periphery of the light guide plate, the focusing ring is arranged between the light guide plate and the light source, and the focusing ring has a focusing surface protruding toward a side close to the light guide plate.
[0008] In a possible implementation, the ultra-thin downlight also includes a shading ring arranged between the light source and the diffuser along the light projection direction, the shading ring is used to shield the gap between the light guide plate and the light source, and the inner hole of the shading ring forms an avoidance area for avoiding the light guide plate.
[0009] In a possible implementation, the ultra-thin downlight also includes a diffuser ring arranged between the shading ring and the diffuser along the light projection direction, the inner diameter of the diffuser ring is smaller than the inner diameter of the shading ring, and is used to evenly diffuse the light projected by the light guide plate to the diffuser ring.
[0010] In a possible implementation, a slot is formed on the inner circumference of the surface ring, and a block adapted to the slot is formed on the outer circumference of the diffusion ring, and the block is engaged in the slot.
[0011] In a possible implementation, the slot is an annular slot body, and a plurality of the blocks are distributed at intervals along the circumference of the diffusion ring, and the plurality of blocks are all engaged in the slot.
[0012] In a possible implementation, a mounting column is provided on a side of the face ring facing away from the diffuser, and a mounting hole is formed along the axial direction of the mounting column, and the mounting hole is used for inserting the mounting component.
[0013] In a possible implementation, the mounting column is further provided with a positioning hole, and the positioning hole is used for plugging and matching with the positioning piece.
[0014] In a possible implementation, the face ring has a fixing portion protruding into the mounting cavity, and the fixing portion abuts against the reflective plate.
[0015] In a possible implementation, the surface ring is provided with heat dissipation holes corresponding to the plate surface of the reflector.
[0016] The beneficial effect of the ultra-thin downlight provided by the utility model is that: compared with the prior art, the ultra-thin downlight of the utility model sets the reflector, the light guide plate, and the light source in the installation cavity, and the light generated by the light source enters the light guide plate from the side wall of the light guide plate, and is refracted in the light guide plate and projected outward through the main diffusion area of the diffusion plate. The light refracted by the light guide plate is projected to the side away from the reflector, and the light can be evenly projected outward through the planar main diffusion area, which not only avoids the problem of excessive local brightness caused by light concentration, but also increases the illumination area. The light that is directly emitted from the gap between the light source and the light guide plate without being refracted by the light guide plate is refracted when passing through the dispersion area and then projected outward. Since the dispersion area is concave to the side away from the light guide plate to form an arc surface, the incident angles of the light are different, and the light output angles of the light after refraction by the diffusion cover are also different. The dispersion area diffuses the light, avoiding the problem of bright spots caused by light concentration. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 This is an exploded view of the ultra-thin downlight provided in the first embodiment of the utility model;
[0019] Figure 2 A cross-sectional view of an ultra-thin downlight provided in Embodiment 1 of the utility model;
[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A part;
[0021] Figure 4 This is an exploded view of the ultra-thin downlight provided in the second embodiment of the utility model;
[0022] Figure 5 A partial cross-sectional view of an ultra-thin downlight provided in the second embodiment of the utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the diffuser used in the second embodiment of the present utility model.
[0024] In the figure: 1, face ring; 101, fixing part; 102, heat dissipation holes; 103, mounting posts; 1031, mounting holes; 104, card slots; 2, light guide plate; 3, reflector; 4, light source; 5, light condensing ring; 6, diffusing member; 601, diffusing plate; 6011, main diffusing area; 6012, dispersing area; 602, diffusing ring; 603, clamping block; 7, light shielding ring; 8, light dissipating ring. Detailed implementation manners
[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0026] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., they are all used to distinguish different objects and are not used to describe a specific order. Unless otherwise specified, the remaining orientation terms, such as "vertical", "clockwise", "counterclockwise", etc., indicate the orientation and position relationship based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model. In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "fixed connection" or "fixedly connected", it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrally connected, and being fixedly connected through other devices or elements. In the claims, description and above-mentioned drawings of the present utility model, when using terms such as "including", "having" and their variants, the intention is to "include but not limited to".
[0027] Please refer to Figures 1 to 6 , and now the ultra-thin downlight provided by the present utility model will be described. The ultra-thin downlight includes a face ring 1 and a diffusing member 6 connected to the opening side of the face ring 1. The face ring 1 and the diffusing member 6 enclose an installation cavity. It further includes a light guide plate 2 disposed in the installation cavity and a light source 4 surrounding the outside of the light guide plate 2, and a reflector 3 disposed on the side of the light guide plate 2 facing away from the diffusing member 6. The diffusing member 6 includes a diffusing plate 601 and a diffusing ring 602 connected to the diffusing plate 601. The diffusing ring 602 is connected to the face ring 1. The plate surface of the diffusing plate 601 located in the installation cavity forms a diffusing surface. The diffusing surface includes a main diffusing area 6011 and a dispersing area 6012 surrounding the outside of the main diffusing area 6011. The main diffusing area 6011 is a plane, and the dispersing area 6012 is an arc surface recessed toward the side away from the light guide plate 2.
[0028] Compared with the prior art, for the ultra-thin downlight provided by the present utility model, the reflector 3, the light guide plate 2, and the light source 4 are all arranged in the installation cavity. The light generated by the light source 4 enters the light guide plate 2 from the side wall of the light guide plate 2, and after refraction in the light guide plate 2, it is projected outward through the main diffusion area 6011 of the diffusion plate 601. The light refracted by the light guide plate 2 is projected to the side away from the reflector 3, and the planar main diffusion area 6011 can project the light evenly outward, not only avoiding the problem of excessive local brightness caused by light concentration, but also increasing the illumination area. The light that directly exits from the gap between the light source 4 and the light guide plate 2 without being refracted by the light guide plate 2 is refracted again when passing through the dispersion area 6012 and then projected outward. Since the dispersion area 6012 is recessed toward the side away from the light guide plate 2 to form an arc surface, the incident angles of the light are different, and the light exit angles of the light after refraction by the diffusion cover are also different. The dispersion area 6012 diffuses the light, avoiding the problem of light concentration and generating bright spots.
[0029] It should be noted that the bottom of the face ring 1 has an installation groove, and the diffusion member 6 is inserted into the installation groove and then connected to the face ring 1 to form an installation cavity. The reflector 3 can make the light in the light guide plate 2 project only toward the diffusion member 6, avoiding the problem that the light dispersion affects the illumination brightness.
[0030] In some embodiments, please refer to Figures 1 to 3 , the ultra-thin downlight further includes a light condensing ring 5 disposed around the outer periphery of the light guide plate 2. The light condensing ring 5 is disposed between the light guide plate 2 and the light source 4, and the light condensing ring 5 has a light condensing surface protruding toward the side close to the light guide plate 2.
[0031] The light condensing surface can condense the light, converge the angle of the light, enhance the total reflection effect of the light entering the light guide plate 2, reduce the divergence of the light at the light inlet of the light guide plate 2, and thus eliminate the light spot.
[0032] In some embodiments, please refer to Figures 4 to 5 , the ultra-thin downlight further includes a light shielding ring 7 disposed between the light source 4 and the diffusion member 6 along the light projection direction. The light shielding ring 7 is used to shield the gap between the light guide plate 2 and the light source 4, and the inner hole of the light shielding ring 7 forms an avoidance area for avoiding the light guide plate 2.
[0033] The light shielding ring 7 can shield the light overflowing from the gap between the light source 4 and the light guide plate 2, avoiding the problem that the light is directly projected to generate light spots. The light shielding ring 7 cooperates with the dispersion area 6012, which can effectively avoid the situation that the light directly projected without being refracted by the light guide plate 2 generates light spots.
[0034] In some embodiments, please refer to Figures 4 to 5, the ultra-thin downlight further includes a light diffusion ring 8 disposed between the light shielding ring 7 and the diffusion member 6 along the light projection direction. The inner diameter of the light diffusion ring 8 is smaller than the inner diameter of the light shielding ring 7, and is used to uniformly diffuse the light projected by the light guide plate 2 to the light diffusion ring 8.
[0035] After the light shielding ring 7 shields the gap between the light source 4 and the light guide plate 2, it will cause the light at the edge of the diffusion cover to be dim, affecting the overall illumination brightness. By setting the light diffusion ring 8 between the light shielding ring 7 and the diffusion member 6, the inner hole of the light diffusion ring 8 allows the light refracted by the light guide plate 2 to pass through directly, and then projects outward through the main diffusion area 6011. In the area of the light guide plate 2 corresponding to the light diffusion ring 8, after the light is projected onto the light diffusion ring 8, it is uniformly diffused through the refraction effect, so that the light passing through the light diffusion ring 8 is projected onto the light diffusion ring 8, making up for the phenomenon of the edge of the diffusion member 6 being darker caused by the light shielding ring 7, and making the overall luminescence of the lamp more uniform.
[0036] Optionally, the outer diameters of the light diffusion ring 8 and the light shielding ring 7 are the same.
[0037] In some embodiments, please refer to Figure 5 , a clamping groove 104 is provided on the inner peripheral surface of the face ring 1, and a clamping block 603 adapted to the clamping groove 104 is provided on the outer peripheral surface of the diffusion ring 602. The clamping block 603 is clamped in the clamping groove 104.
[0038] In this embodiment, by means of the clamping cooperation between the clamping block 603 and the clamping groove 104, the diffusion ring 602 is connected to the face ring 1 without drilling holes in the face ring 1 and the diffusion ring 602. This not only avoids the problem of damage to the face ring 1 or the diffusion ring 602 caused by drilling, but also does not require external connectors, simplifies the installation steps, and improves the installation efficiency.
[0039] Optionally, the light source 4, the light guide plate 2 and the reflector 3 are fixed under the clamping force of the face ring 1 and the diffusion ring 602.
[0040] Optionally, a plurality of clamping blocks 603 are provided and are arranged in one-to-one correspondence with the clamping grooves 104.
[0041] Optionally, the clamping block 603 is of an annular structure, the clamping groove 104 is an annular groove body, and the clamping block 603 is in clamping cooperation with the clamping groove 104.
[0042] In some embodiments, please refer to Figure 6 , the clamping groove 104 is an annular groove body, and a plurality of clamping blocks 603 are distributed at intervals along the circumferential direction of the diffusion ring 602, and all the plurality of clamping blocks 603 are clamped in the clamping groove 104.
[0043] The solution in this embodiment does not require circumferential positioning during installation, which simplifies the installation steps. In addition, compared with the solution of setting the clamping block 603 as an annular structure along the outer peripheral surface of the diffusion ring 602, this embodiment reduces the resistance that the clamping block 603 needs to overcome during the installation process, making it more convenient for installation and disassembly.
[0044] In some embodiments, referring to Figure 1 and Figure 2 , on one side of the face ring 1 facing away from the diffusion member 6, there is an installation post 103. The installation post 103 is axially provided with an installation hole 1031 along its own axis, and the installation hole 1031 is used for inserting the installation member.
[0045] By providing the installation hole 1031 on the installation post 103, the contact area with the installation member can be increased, and it can be avoided that the face ring 1 is damaged due to force after the installation member is inserted into the installation hole 1031.
[0046] Optionally, the installation hole 1031 corresponds to the through hole on the installation seat. The installation member is respectively inserted into the through hole and the installation hole 1031 to fix the face ring 1.
[0047] In some embodiments, referring to Figure 1 , the installation post 103 is further provided with a positioning hole, and the positioning hole is used for inserting and mating with the positioning member.
[0048] The positioning hole is inserted and mated with the positioning member on the installation seat, so that the installation hole 1031 corresponds to the through hole on the installation seat. The solution in this embodiment does not require realignment and positioning when installing the face ring 1, improving the installation efficiency.
[0049] In some embodiments, referring to Figures 1 to 5 , the face ring 1 has a fixing portion 101 protruding into the installation cavity, and the fixing portion 101 abuts against the reflector 3.
[0050] The fixing portion 101 protruding into the installation cavity can, on the one hand, abut against the reflector 3 to limit the reflector cup and the light guide plate 2 in the up and down directions, and on the other hand, can increase the strength of the face ring 1, improving the strength and anti-deformation ability of the face ring 1 without increasing the thickness of the face ring 1.
[0051] In some embodiments, referring to Figure 1 , the face ring 1 is provided with heat dissipation holes 102 corresponding to the plate surface of the reflector 3.
[0052] After the light source 4 is powered on, a large amount of heat will be generated. The heat dissipation holes 102 can quickly dissipate the heat in the installation cavity to the outside, avoiding the temperature in the installation cavity being too high and affecting the normal operation of the light source 4.
[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. Slim downlight, characterized in that, It includes a face ring and a diffuser connected to the open side of the face ring, the face ring and the diffuser together form an installation cavity, and also includes a light guide plate arranged in the installation cavity and a light source arranged outside the light guide plate, and a reflective plate arranged on the side of the light guide plate away from the diffuser, the diffuser includes a diffuser plate and a diffuser ring connected to the diffuser plate, the diffuser ring is connected to the face ring, the plate surface of the diffuser plate located in the installation cavity forms a diffuser surface, the diffuser surface includes a main diffuser area and a dispersed area arranged outside the main diffuser area, the main diffuser area is a plane, and the dispersed area is an arc-shaped surface recessed toward the side away from the light guide plate.
2. The ultra-thin downlight according to claim 1, wherein The ultra-thin downlight further comprises a focusing ring arranged around the outer periphery of the light guide plate, the focusing ring is arranged between the light guide plate and the light source, and the focusing ring has a focusing surface protruding toward a side close to the light guide plate.
3. The ultra-thin downlight according to claim 1, characterized in that, The ultra-thin downlight also includes a shading ring arranged between the light source and the diffuser along the light projection direction, the shading ring is used to shield the gap between the light guide plate and the light source, and the inner hole of the shading ring forms an escape zone for avoiding the light guide plate.
4. The ultra-thin downlight according to claim 3, wherein, The ultra-thin downlight also includes a light diffusion ring arranged between the light shielding ring and the diffuser along the light projection direction. The inner diameter of the light diffusion ring is smaller than the inner diameter of the light shielding ring and is used to evenly diffuse the light projected by the light guide plate to the light diffusion ring.
5. The ultra-thin downlight according to claim 1, wherein, The inner circumference of the surface ring is provided with a clamping groove, and the outer circumference of the diffusion ring is provided with a clamping block adapted to the clamping groove, and the clamping block is clamped in the clamping groove.
6. The ultra-thin downlight according to claim 5, characterized in that, The clamping groove is an annular groove body, and a plurality of clamping blocks are distributed at intervals along the circumference of the diffusion ring, and the plurality of clamping blocks are all clamped in the clamping groove.
7. The ultra-thin downlight according to claim 1, wherein A mounting column is arranged on a side of the face ring facing away from the diffuser. The mounting column is provided with a mounting hole along its axial direction. The mounting hole is used for inserting the mounting piece.
8. The ultra-thin downlight according to claim 7, characterized in that, The mounting column is also provided with a positioning hole, and the positioning hole is used for plugging and matching with the positioning piece.
9. The ultra-thin downlight according to claim 1, characterized in that, The face ring has a fixing portion protruding into the mounting cavity, and the fixing portion abuts against the reflective plate.
10. The ultra-thin downlight according to claim 1, wherein, The surface ring is provided with heat dissipation holes corresponding to the plate surface of the reflector.