Lamp capable of uniformly emitting light
By using light guides and reflective surface structures in the luminaire, the use of LED lights and PCBAs is reduced, achieving uniform light emission on the lampshade surface. This solves the problems of high cost and poor uniformity in existing technologies, reduces product costs, and improves color consistency.
Patent Information
- Application Number
- CN202520115829.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing lighting fixtures require multiple LEDs and multiple PCBAs to achieve uniform light emission, resulting in high costs and poor overall uniformity, and there may be color differences between different LEDs.
By using light guide teeth and multiple reflective surfaces inside the light guide, light is evenly distributed through reflection and the light guide teeth inside the light guide, reducing the number of LEDs and PCBA area, and achieving uniform light emission on the lampshade surface.
This reduces the number of LEDs and the PCBA area, lowers product costs, and improves overall color consistency and lampshade surface uniformity.
Smart Images
Figure CN223649164U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting fixtures, and more particularly to a lighting fixture that emits light uniformly. Background Technology
[0002] For existing lighting products, such as Figure 1 As shown, the device comprises an LED light board 91, a diffuser lampshade 92, and a lower cover 93. The LED light board 91 includes multiple LEDs and multiple PCBAs. The lamp uses multiple LEDs arranged in multiple rows to illuminate the light, which then shines onto the diffuser lampshade 92 to achieve uniform light emission.
[0003] This solution requires an array of many LEDs to provide uniform illumination and necessitates the splicing of multiple PCBAs, resulting in high costs for electronic components.
[0004] Therefore, considering the aforementioned technical problems, it is necessary to provide a new technical solution. Utility Model Content
[0005] To address at least one of the technical problems existing in the prior art, this utility model provides a lamp with uniform light emission. It employs a light guide body with internal light guide teeth and a first, second, and third reflective surface to reflect the light emitted from the light source, thereby achieving uniform light emission across the entire lampshade. This effectively reduces the number of LEDs and the PCBA area, significantly lowering product costs. The specific technical solution is as follows:
[0006] This utility model provides a lamp that emits light uniformly, which includes a lamp plate, a light guide, a lamp cover and a bottom cover;
[0007] The light panel includes a light source and a circuit board that is fixedly connected to the light source, and the light guide is located on the side of the light panel closer to the light source;
[0008] The light guide is provided with a cavity, a second reflective surface, and a third reflective surface;
[0009] The inner wall of the cavity corresponding to the light source is the first inner wall, the inner wall of the cavity adjacent to the light source is the second inner wall, and the inner wall of the cavity away from the light source is the third inner wall; a conical groove is formed on the first inner wall, the groove wall of the conical groove is the first reflective surface, the first reflective surface is configured to allow the light emitted by the light source to shine on the first reflective surface and reflect it to the second reflective surface, the second inner wall is uniformly provided with first light guide teeth, and the third inner wall is uniformly provided with second light guide teeth;
[0010] A second reflective surface and a third reflective surface are respectively provided on the side surface of the light guide along the circumferential direction. The second reflective surface is located at the end of the light guide closer to the light source, and the third reflective surface is located at the end of the light guide away from the light source. The second reflective surface is configured to reflect the light emitted by the first reflective surface onto the first light guide tooth or the third reflective surface, and the third reflective surface is configured to reflect the light reflected by the second reflective surface onto the second light guide tooth.
[0011] The lampshade has an installation opening, through which the lamp plate and light guide are fixedly housed within the lampshade.
[0012] The bottom cover fits onto the mounting opening of the lampshade.
[0013] As a preferred embodiment of the uniformly emitting lamp described in this utility model, the conical groove is a circular conical groove or a polygonal conical groove; and / or
[0014] The light panel consists of a light source and a circuit board.
[0015] As a preferred embodiment of the uniformly emitting lamp described in this utility model, the second reflective surface is an annular inclined surface, and the second reflective surface is disposed at the end of the light guide near the light source. The inclined direction of the second reflective surface is consistent with the inclined direction of the first reflective surface.
[0016] The third reflecting surface is an annular inclined surface, and the inclination direction of the third reflecting surface is mirror-symmetrical to the inclination direction of the second reflecting surface.
[0017] As a preferred embodiment of the uniformly emitting lamp of this utility model, a first light guide tooth is annularly wound around the second inner wall along the radial direction of the light guide body, the radial direction of the first light guide tooth is consistent with the radial direction of the light guide body, and multiple first light guide teeth are uniformly distributed on the second inner wall; or
[0018] The first optical guide tooth is a dot-shaped optical guide tooth, and multiple first optical guide teeth are evenly arranged in an array on the second inner wall.
[0019] As a preferred embodiment of the uniformly emitting lamp of this utility model, the second light guide tooth is an annular light guide tooth, and multiple annular second light guide teeth are evenly distributed along the center outward on the third inner wall; or
[0020] The second optical guide tooth is a dot-shaped optical guide tooth, and multiple second optical guide teeth are evenly arranged in an array on the third inner wall.
[0021] As a preferred embodiment of the uniformly emitting lamp described in this utility model, there are several light sources, and several conical grooves are provided on the first inner wall. The several conical grooves are evenly distributed on the first inner wall around the center point of the first inner wall.
[0022] Each conical groove corresponds to a light source.
[0023] As a preferred embodiment of the uniformly emitting lamp described in this utility model, the light guide is designed in two parts, including a first light guide part and a second light guide part, which are connected together to form the light guide.
[0024] As a preferred embodiment of the uniformly emitting lamp described in this utility model, the light source is fixed on the circuit board, the light guide is fixedly connected to the circuit board on the side where the light source is located, and the lamp plate is fixedly connected to the bottom cover.
[0025] As a preferred embodiment of the uniformly emitting lamp described in this utility model, the light guide is a cylindrical light guide with a cylindrical cavity.
[0026] As a preferred embodiment of the uniformly emitting lamp of this utility model, the first light guide tooth has a triangular or arc-shaped cross-section along its radial direction; and / or
[0027] The second optical guide tooth has a triangular or arc-shaped cross-section along its radial direction.
[0028] Compared with the prior art, the technical solution of this utility model has at least one or more of the following beneficial effects:
[0029] This technical solution requires only one LED and one circuit board. The LED light, guided by the light guide 2, illuminates the entire light guide, projecting the light onto the lampshade and achieving uniform illumination across the entire lampshade surface. Compared to existing technologies, this patent effectively reduces the number of LEDs and the PCBA area, significantly lowering product costs.
[0030] Existing lampshades do not have LEDs illuminating the upper side, resulting in poor overall uniformity. Furthermore, there may be color differences between different LEDs, leading to uneven color in some areas after lighting. This patented technology uses a single LED, resulting in better overall color consistency and the ability to illuminate the upper surface of the lampshade, thus improving overall uniformity.
[0031] The light emitted by the LED light is reflected by the first reflective surface on the light guide to the second reflective surface. Then, a portion of the light is reflected by the second reflective surface to the first light guide tooth. This portion of the light is emitted from the side surface of the light guide through the first light guide tooth, thus illuminating the entire side wall of the lampshade. At the same time, another portion of the light is reflected by the second reflective surface to the position of the third reflective surface. This portion of the light is then reflected by the third reflective surface to the position of the second light guide tooth. This portion of the light is emitted from the top surface of the light guide through the second light guide tooth, thus illuminating the entire top of the lampshade.
[0032] Several light sources are set up and fixed on a circuit board. These light sources facilitate different color temperature adjustments, and different colored light sources can also be set up for color matching, etc.
[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0034] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0035] Figure 1 This is an exploded structural diagram of a lighting product in the prior art;
[0036] Figure 2 This is an exploded structural diagram of the lamp described in this utility model;
[0037] Figure 3 This is a cross-sectional view of the lamp described in this utility model;
[0038] Figure 4 This is a three-dimensional structural schematic diagram of an embodiment of the first light guide portion or the second light guide portion of this utility model;
[0039] Figure 5 This is a three-dimensional structural schematic diagram of another embodiment of the first light guide part or the second light guide part of this utility model;
[0040] Figure 6 This is a three-dimensional structural schematic diagram of another embodiment of the first light guide part or the second light guide part of this utility model.
[0041] Among them, 1-lamp board, 2-light guide, 3-lamp cover, 4-bottom cover, 11-light source, 12-circuit board, 21-cavity, 211-first inner wall, 212-second inner wall, 213-third inner wall, 214-first reflective surface, 215-first light guide tooth, 216-second light guide tooth, 217-conical groove, 22-second reflective surface, 23-third reflective surface, 24-first light guide part, 25-second light guide part. Detailed Implementation
[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0043] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "provided with," "equipped with," "connected," "installed," "sleeved," "opened," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
[0046] Please refer to Figure 2-6 ,like Figure 2-6 As shown, this utility model provides a lamp that emits light uniformly, which includes a lamp plate 1, a light guide 2, a lampshade 3, and a bottom cover 4;
[0047] The lamp panel 1 includes a light source 11 and a circuit board 12 fixedly connected to the light source 11. The light guide 2 is disposed on the side of the lamp panel 1 close to the light source 11.
[0048] The light guide 2 is provided with a cavity 21, a second reflective surface 22 and a third reflective surface 23;
[0049] The inner wall of the cavity 21 corresponding to the light source 11 is the first inner wall 211, the inner wall of the cavity 21 adjacent to the light source 11 is the second inner wall 212, and the inner wall of the cavity 21 away from the light source 11 is the third inner wall 213. A conical groove 217 is provided on the first inner wall 211, and the groove wall of the conical groove is the first reflective surface 214. The first reflective surface 214 is configured so that the light emitted by the light source 11 can be irradiated onto the first reflective surface 214 and reflected onto the second reflective surface 22. First light guide teeth 215 are uniformly arranged on the second inner wall 212, and second light guide teeth 216 are uniformly arranged on the third inner wall 213.
[0050] A second reflective surface 22 and a third reflective surface 23 are respectively provided on the side surface of the light guide 2 along the circumferential direction. The second reflective surface 22 is located at the end of the light guide 2 closer to the light source 11, and the third reflective surface 23 is located at the end of the light guide 2 away from the light source 11. The second reflective surface 22 is configured to reflect the light emitted by the first reflective surface 214 onto the first light guide tooth 215 or the third reflective surface 23. The third reflective surface 23 is configured to reflect the light reflected by the second reflective surface 22 onto the second light guide tooth 216.
[0051] The lampshade 3 has an installation opening, through which the lamp plate 1 and the light guide 2 are fixedly housed within the lampshade 3.
[0052] The bottom cover 4 fits onto the mounting opening of the lampshade 3.
[0053] In the example, the light emitted by the LED light is reflected by the first reflective surface on the light guide to the second reflective surface. Then, a portion of the light is reflected by the second reflective surface to the first light guide tooth. This portion of the light is emitted from the side surface of the light guide through the first light guide tooth, thereby illuminating the entire side wall of the lampshade. At the same time, another portion of the light is reflected by the second reflective surface to the position of the third reflective surface. It is then reflected by the third reflective surface to the position of the second light guide tooth. This portion of the light is emitted from the top surface of the light guide through the second light guide tooth, thereby illuminating the entire top of the lampshade.
[0054] In a preferred embodiment, the light guide 2 is a cylindrical light guide or a polygonal cylindrical light guide. More preferably, when the light guide 2 is a cylindrical light guide, the cavity 21 is a cylindrical cavity; when the light guide 2 is a polygonal cylindrical light guide, the cavity 21 is a polygonal cylindrical cavity. In this example, the light guide 2 is a cylindrical light guide, and the cavity 21 is a cylindrical cavity. In this example, the length of the light guide 2 is the same as its diameter.
[0055] Preferably, the conical groove 217 is a circular conical groove or a polygonal conical groove, and the conical groove 217 corresponds to the light source 11. Similarly, when the light guide 2 is a cylindrical light guide, the conical groove 217 is a circular conical groove; when the light guide 2 is a polygonal cylindrical light guide, the conical groove 217 is a polygonal conical groove, and the number of angles of the polygonal conical groove is the same as the number of angles of the polygonal cylindrical light guide, and the angles of the polygonal conical groove correspond one-to-one with the angles of the polygonal cylindrical light guide.
[0056] In a preferred embodiment, such as Figure 2-6 As shown, the second reflective surface 22 is an annular inclined surface. The second reflective surface 22 is disposed at one end of the light guide 2 near the light source 11. The inclined direction of the second reflective surface 22 is consistent with the inclined direction of the first reflective surface 214.
[0057] The third reflecting surface 23 is an annular inclined surface, and the inclination direction of the third reflecting surface 23 is mirror-symmetrical to the inclination direction of the second reflecting surface 22.
[0058] In a preferred embodiment, along the radial direction of the light guide 2, the first light guide tooth 215 is circumferentially wound around the second inner wall 212, such as... Figure 2 , Figure 4 and Figure 6 As shown, the radial direction of the first optical guide tooth 215 is consistent with the radial direction of the light guide body 2, and multiple first optical guide teeth 215 are evenly distributed on the second inner wall 212.
[0059] Another embodiment, such as Figure 5 As shown, the first optical guide tooth 215 is a dot-shaped optical guide tooth, and multiple first optical guide teeth 215 are evenly arranged in an array on the second inner wall 212.
[0060] In a preferred embodiment, such as Figure 4 As shown, the second optical guide tooth 216 is an annular optical guide tooth, and multiple annular second optical guide teeth 216 are evenly distributed outward from the center of the third inner wall 213.
[0061] Another embodiment, such as Figure 5 As shown, the second optical guide tooth 216 is a dot-shaped optical guide tooth, and multiple second optical guide teeth 216 are evenly arranged in an array on the third inner wall 213.
[0062] In a preferred embodiment, such as Figure 2-3As shown, the lamp board 1 includes a light source 11 and a circuit board 12. In this example, the light source 11 corresponds to the center point of the first inner wall 211, and a tapered groove is disposed at the center point of the first inner wall 211. Preferably, the light source 11 is an LED lamp. This technical solution only requires one LED lamp and one circuit board. After the LED light is guided by the light guide 2, the entire light guide can emit light, illuminating the lampshade and achieving a uniform light emission effect on the entire lampshade surface. Compared with the prior art, this patent effectively reduces the number of LEDs and also reduces the PCBA area, greatly reducing product costs.
[0063] Existing lampshades do not have LEDs illuminating the upper side, resulting in poor overall uniformity. Furthermore, there may be color differences between different LEDs, leading to uneven color in some areas after lighting. This patented technology uses a single LED, resulting in better overall color consistency and the ability to illuminate the upper surface of the lampshade, thus improving overall uniformity.
[0064] In other preferred embodiments, such as Figure 6 As shown, there are several light sources 11. Several conical grooves 217 are formed on the first inner wall 211. These grooves 217 are evenly distributed circumferentially on the first inner wall 211, with the center point as the center. Each groove 217 corresponds to a light source. Preferably, the light source 11 is an LED lamp. Several light sources are set and fixed on a circuit board. These multiple light sources facilitate adjustment of different color temperatures and can also be set with different colors for color matching, etc.
[0065] In this embodiment, the light guide 2 is designed as a split unit, comprising a first light guide portion 24 and a second light guide portion 25, which are fixedly connected to form the light guide 2. In this example, the first light guide portion 24 and the second light guide portion 25 are arranged in a mirror-symmetrical manner along the axis. The split design of the light guide facilitates manufacturing; of course, other split design schemes are also possible for the light guide.
[0066] In a specific embodiment, the light source 11 is fixed to the circuit board 12, the light guide 2 is fixedly connected to the circuit board 12 on the side where the light source is located, and the lamp board 1 is fixedly connected to the bottom cover 4. In this example, the light source 11, i.e., the LED light, is mounted on the circuit board 12, the circuit board 12 is glued to the bottom cover 4, and the light guide 2 is glued to the circuit board 12. In this example, the circuit board 12 is a PCBA board.
[0067] As an example, the radial cross-section of the first optical guide tooth 215 is triangular, arc-shaped, or has other micro-patterns, etc. Arc-shaped teeth include spheres, hemispheres, etc. When the radial cross-section of the first optical guide tooth is triangular, one corner of the triangle faces inwards towards the optical conductor.
[0068] As an example, the radial cross-section of the second optical guide tooth 216 is triangular, arc-shaped, or has other micro-patterns, etc. Arc-shaped teeth include spheres, hemispheres, etc. When the radial cross-section of the second optical guide tooth is triangular, one corner of the triangle faces inwards towards the optical conductor.
[0069] It should be noted that, unless otherwise specified, all features in the above embodiments or embodiments described herein can be freely combined.
[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "yet another embodiment," "another embodiment," "other embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.
Claims
1. A lamp that emits light uniformly, characterized in that, It includes a lamp panel (1), a light guide (2), a lampshade (3), and a bottom cover (4); The lamp panel (1) includes a light source (11) and a circuit board (12) that is fixedly connected to the light source (11). The light guide (2) is disposed on the side of the lamp panel (1) close to the light source (11). The light guide (2) is provided with a cavity (21), a second reflective surface (22) and a third reflective surface (23); The inner wall of the cavity (21) corresponding to the light source (11) is the first inner wall (211), the inner wall of the cavity (21) adjacent to the light source (11) is the second inner wall (212), and the inner wall of the cavity (21) away from the light source (11) is the third inner wall (213). A conical groove (217) is provided on the first inner wall (211), and the groove wall of the conical groove (217) is the first reflecting surface (214). The first reflecting surface (214) is configured so that the light emitted by the light source (11) can be irradiated onto the first reflecting surface (214) and reflected onto the second reflecting surface (22). The second inner wall (212) is uniformly provided with first light guide teeth (215), and the third inner wall (213) is uniformly provided with second light guide teeth (216). The side surface of the light guide (2) is provided with a second reflective surface (22) and a third reflective surface (23) along the circumferential direction. The second reflective surface (22) is located at the end of the light guide (2) closer to the light source (11), and the third reflective surface (23) is located at the end of the light guide (2) away from the light source (11). The second reflective surface (22) is configured to reflect the light emitted by the first reflective surface (214) onto the first light guide tooth (215) or the third reflective surface (23). The third reflective surface (23) is configured to reflect the light reflected by the second reflective surface (22) onto the second light guide tooth (216). The lampshade (3) has an installation opening, through which the lamp plate (1) and the light guide (2) pass and are fixedly housed inside the lampshade (3); The bottom cover (4) fits over the mounting opening of the lampshade (3).
2. The lamp with uniform light emission according to claim 1, characterized in that, The conical groove (217) is a conical groove or a polygonal conical groove; and / or The light panel (1) includes a light source (11) and a circuit board (12).
3. The lamp with uniform light emission according to claim 1, characterized in that, The second reflective surface (22) is an annular inclined surface. The second reflective surface (22) is located at one end of the light guide (2) near the light source (11). The inclined direction of the second reflective surface (22) is consistent with the inclined direction of the first reflective surface (214). The third reflecting surface (23) is an annular inclined surface, and the inclination direction of the third reflecting surface (23) is mirror-symmetrical to the inclination direction of the second reflecting surface (22).
4. The lamp with uniform light emission according to claim 1, characterized in that, Along the radial direction of the light guide (2), the first light guide tooth (215) is annularly wound around the second inner wall (212), and the radial direction of the first light guide tooth (215) is consistent with the radial direction of the light guide (2). Multiple first light guide teeth (215) are evenly distributed on the second inner wall (212); or The first optical guide tooth (215) is a dot-shaped optical guide tooth, and multiple first optical guide teeth (215) are evenly arranged in an array on the second inner wall (212).
5. The lamp with uniform light emission according to claim 1, characterized in that, The second optical guide tooth (216) is an annular optical guide tooth, and multiple annular second optical guide teeth (216) are evenly distributed outward from the center of the third inner wall (213); or The second optical guide tooth (216) is a dot-shaped optical guide tooth, and multiple second optical guide teeth (216) are evenly arranged in an array on the third inner wall (213).
6. The lamp with uniform light emission according to claim 1, characterized in that, There are several light sources (11), and several conical grooves (217) are provided on the first inner wall (211). The several conical grooves (217) are evenly distributed on the first inner wall (211) around the center point of the first inner wall (211). The conical groove (217) corresponds one-to-one with the light source.
7. The lamp with uniform light emission according to claim 1, characterized in that, The light guide (2) is designed in two parts. The light guide (2) includes a first light guide part (24) and a second light guide part (25). The first light guide part (24) and the second light guide part (25) are connected together to form the light guide (2).
8. The lamp with uniform light emission according to claim 1, characterized in that, The light source (11) is fixed on the circuit board (12), the light guide (2) is fixedly connected to the circuit board (12) on the side where the light source is located, and the lamp board (1) is fixedly connected to the bottom cover (4).
9. The lamp with uniform light emission according to claim 1, characterized in that, The light guide (2) is a cylindrical light guide, and the cavity (21) is a cylindrical cavity.
10. The lamp with uniform light emission according to claim 1, characterized in that, The first optical guide tooth (215) has a triangular or arc-shaped cross-section along its radial direction; and / or The second optical guide tooth (216) has a triangular or arc-shaped cross section along its radial direction.