Decorative lamp
By creating a through-hole in the central area of the light guide plate and adding a filler plate and a reflective layer, the light propagation is optimized, solving the problem of increased cost caused by the increase in the size of the light guide plate, and achieving cost reduction and improved light emission effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO LAIHE CHRISTMAS GIFTS
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
In existing decorative lights, the increase in the size of the light guide plate leads to an increase in the number and length of LED beads or light strips, thereby increasing product costs.
A through hole is made in the central area of the light guide plate, and the LED is installed in the through hole. The cross-sectional perimeter of the through hole is smaller than the outer contour perimeter of the light guide plate. The LED is fixed with a filler plate with a matching geometry. The concave and convex structure of the light guide plate and the reflective layer are combined to optimize light propagation.
The reduced coverage length of the LED beads decreases light escape, improving the luminous effect and the aesthetics of the decorative lights, while also reducing costs and enhancing the installation stability of the LED beads.
Smart Images
Figure CN224135737U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting technology, and in particular to a decorative lamp. Background Technology
[0002] Existing decorative lights typically attach LED beads or LED strips to the outer surface of a light guide plate, with the LED beads or strips emitting light on the front of the light guide plate to display the lighting effect. The LED beads need to cover as much of the outer surface of the light guide plate as possible to achieve good light emission. However, this results in a larger light guide plate size and a larger perimeter of its outer contour, requiring a greater length of light to be illuminated by the LED beads or strips. Consequently, the number of LED beads or the length of the strip increases with the size of the light guide plate, leading to a rise in product cost. Utility Model Content
[0003] This utility model proposes a decorative lamp to overcome the shortcomings of the prior art, thereby solving the problem that the increased size of the light guide plate in the existing decorative lamp leads to increased costs for the lamp beads or light strips.
[0004] To achieve the above technical objectives, this utility model proposes a decorative lamp, including a light guide plate and a plurality of lamp beads. The light guide plate has a through hole in the thickness direction, the through hole is located in the central area of the light guide plate, the lamp beads are installed in the through hole, the sidewall of the through hole forms a light-inlet surface, the light-emitting side of the lamp beads is close to the light-inlet surface, and the perimeter of the cross-section of the through hole is smaller than the perimeter of the outer contour of the cross-section of the light guide plate.
[0005] The decorative lamp of this utility model has a through hole in the central area of the light guide plate, and the perimeter of the cross-section of the through hole is smaller than the perimeter of the outer contour of the cross-section of the light guide plate. This greatly reduces the illumination length that the lamp beads need to cover, thereby reducing costs. At the same time, the light-emitting side of the lamp beads faces the sidewall of the through hole, which helps to reduce the escape of the lamp beads' light and improve the luminous effect of the light guide plate.
[0006] Preferably, the decorative lamp also includes a filler plate, the outer contour shape of which is adapted to the geometry of the through hole, the filler plate being fitted into the through hole, and the lamp beads being fixed between the light guide plate and the filler plate.
[0007] By adopting the aforementioned technical solution and setting a filling plate that adapts to the geometry of the through hole, it is helpful for the installation and fixation of the LED beads, which improves the installation stability of the LED beads and also enhances the aesthetics of the decorative light.
[0008] Preferably, the light guide plate and the filler plate are fixedly connected by clips or glue.
[0009] By adopting the aforementioned technical solution, the reliability and stability of the connection between the filler plate and the light guide plate are improved, and the installation stability of the LED beads is further enhanced.
[0010] Preferably, the area of the through hole cross-section is S1, and the area of the geometric shape enclosed by the outer contour of the light guide plate cross-section is S2, where 1:20≤S1:S2≤1:4.
[0011] By adopting the aforementioned technical solution, the cross-sectional area of the through hole and the cross-sectional area of the light guide plate are configured within a reasonable range, so that the light guide plate has sufficient light output area and the decorative light can have sufficient decorative effect.
[0012] Preferably, the shape of the through hole is the same as the geometry of the outer contour of the light guide plate.
[0013] The aforementioned technical solution helps to reduce stress concentration caused by opening through holes in the light guide plate and improve the stability of the light guide plate. On the other hand, it also makes the decorative lights look more harmonious and beautiful.
[0014] Preferably, the front side of the light guide plate forms a light-emitting surface, and the light-emitting surface is provided with a concave-convex structure.
[0015] Using the aforementioned technical solution, the concave-convex structure is used to generate light refraction and reflection, which can blur the light of the LED beads and expand the area illuminated by the LED beads. This makes the front of the light guide plate present visual effects such as light refraction and diffusion, thus improving the aesthetics of the decorative light. At the same time, the concave-convex structure can partially disrupt the total internal reflection condition of the light guide plate, reduce the total internal reflection inside the light guide plate, thereby reducing edge light leakage and further improving the light efficiency of the light guide plate.
[0016] Preferably, the concave-convex structure is a light-guiding rib protruding on the light-emitting surface, and the light-guiding rib is provided in multiple forms and extends in the same direction, with the multiple light-guiding ribs distributed at intervals on the light-emitting surface.
[0017] By employing the aforementioned technical solution, multiple light guide ribs extending in the same direction and spaced apart enable light to be scattered step by step during its propagation within the light guide plate, thereby optimizing the light output effect on the light guide plate. Simultaneously, by adjusting the density and cross-sectional parameters of the light guide ribs, the attenuation gradient along the light propagation path can be precisely controlled, resulting in a more uniform light output effect on the light guide plate. Furthermore, setting multiple light guide ribs to extend in the same direction allows the scattered light to exhibit regular scattering, further optimizing the light output effect of the light guide plate.
[0018] Preferably, the concave-convex structure consists of a plurality of light-guiding protrusions that protrude from the light-emitting surface, and the plurality of light-guiding protrusions are spaced apart on the light-emitting surface.
[0019] By adopting the aforementioned technical solution, the refraction and scattering of light by the light guide plate are enhanced, which helps to improve the light output effect of the light guide plate and increase the decorative effect of the decorative light.
[0020] Preferably, the back of the light guide plate is provided with a reflective layer so that the back of the light guide plate forms a reflective surface.
[0021] By adopting the aforementioned technical solution, a reflective layer is provided on the back of the light guide plate. The reflective layer can reflect part of the light emitted by the lamp beads toward the light-emitting surface, which helps to improve the light emission effect of the light-emitting surface and thus increase the aesthetics of the decorative lamp.
[0022] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of a decorative lamp in an embodiment of this utility model;
[0024] Figure 2 This is a partial schematic diagram of the light guide plate at the through hole position in an embodiment of this utility model;
[0025] Figure 3 This is another schematic diagram of the decorative lamp in an embodiment of this utility model;
[0026] Figure 4 This is a schematic diagram of the concave-convex structure in an embodiment of the present utility model;
[0027] Figure 5 This is another schematic diagram of the decorative lamp in an embodiment of this utility model;
[0028] Figure 6 This is another schematic diagram of the decorative lamp in an embodiment of this utility model.
[0029] Figure label:
[0030] 100, light guide plate; 110, through hole; 111, light inlet surface; 120, light outlet surface; 130, light guide rib; 140, light guide protrusion; 150, reflective layer.
[0031] 200. Filler plate;
[0032] 300. LED beads. Detailed Implementation
[0033] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.
[0037] like Figure 1 , Figure 2 As shown, in one embodiment of the present invention, a decorative lamp is provided, including a light guide plate 100 and a plurality of lamp beads 300. The light guide plate 100 has a through hole 110 in the thickness direction. The through hole 110 is located in the central region of the light guide plate 100. The lamp beads 300 are installed in the through hole 110. The sidewall of the through hole 110 forms a light-incoming surface 111. The light-emitting side of the lamp beads 300 is close to the light-incoming surface 111. The perimeter of the cross-section of the through hole 110 is smaller than the perimeter of the outer contour of the cross-section of the light guide plate 100.
[0038] The lamp bead 300 can be either an LED lamp bead 300 or an LED light strip. The light guide plate 100 can be made of acrylic or PC material. The light emitted by the lamp bead 300 can be diffused through the light guide plate 100; alternatively, multiple light guide points can be processed on the light guide plate 100, and the light can achieve a uniform light output effect through diffuse reflection from multiple light guide points; or tiny diffuse reflection particles can be added during the casting or injection molding process of the light guide plate 100, and the light can be reflected by the diffuse reflection particles to achieve a uniform light output effect.
[0039] In this embodiment, the LED beads 300 are glued to the side wall of the through hole 110. Multiple LED beads 300 are connected in series and / or in parallel by a power cord, which leads out from one side of the through hole 110 to the back of the light guide plate 100.
[0040] The decorative lamp of this utility model has a through hole 110 in the central area of the light guide plate 100, and the perimeter of the cross-section of the through hole 110 is smaller than the perimeter of the outer contour of the cross-section of the light guide plate 100. The lamp beads 300 are installed in the through hole 110, which greatly reduces the illumination length to be covered by the lamp beads 300, thereby reducing the cost. At the same time, the light-emitting side of the lamp beads 300 faces the sidewall of the through hole 110, which helps to reduce the escape of the light from the lamp beads 300 and improve the luminous effect of the light guide plate 100.
[0041] In one embodiment, such as Figures 1 to 3 As shown, the decorative lamp also includes a filler plate 200. The geometry of the outer contour of the filler plate 200 is adapted to the geometry of the through hole 110. The filler plate 200 is fitted into the through hole 110, and the lamp bead 300 is fixed between the light guide plate 100 and the filler plate 200.
[0042] In this embodiment, the base of the LED bead 300 is fixed to the filler plate 200. The two are bonded together with adhesive.
[0043] In this embodiment, the filler plate 200 and the light guide plate 100 are made of the same material. The through holes 110 on the light guide plate 100 are formed by cutting, and the filler plate 200 is processed from the cut material.
[0044] In some other embodiments, the filler plate 200 may also be made of other materials.
[0045] By setting a filler plate 200 that conforms to the geometry of the through hole 110, the installation and fixation of the LED bead 300 are facilitated, the installation stability of the LED bead 300 is improved, and the aesthetics of the decorative light are also enhanced.
[0046] In one embodiment, the light guide plate 100 and the filler plate 200 are fixedly connected by a snap fastener.
[0047] In this embodiment, the light guide plate 100 and the filler plate 200 are held together by snap-fit fasteners, thus fixing one end of the light guide plate 100 and the filler plate 200. Multiple sets of snap-fit fasteners are used to fix the light guide plate 100 and the filler plate 200 together.
[0048] In another embodiment, the light guide plate 100 and the filler plate 200 are fixedly connected by adhesive. The adhesive can be a UV adhesive, applied to adjacent positions of the light guide plate 100 and the filler plate 200, and then cured by ultraviolet light to fix them together.
[0049] The above settings improve the reliability and stability of the connection between the filler plate 200 and the light guide plate 100, and further enhance the installation stability of the lamp beads 300.
[0050] In one embodiment, such as Figure 1 , Figure 3 As shown, the area of the cross-section of the through hole 110 is S1, and the area of the geometric shape enclosed by the outer contour of the cross-section of the light guide plate 100 is S2, where 1:20≤S1:S2≤1:4.
[0051] In this way, the cross-sectional area of the through hole 110 and the cross-sectional area of the light guide plate 100 are configured within a reasonable range, so that the light guide plate 100 has a sufficient light-emitting surface area 120, ensuring that the decorative lamp can have a sufficient decorative effect.
[0052] In one embodiment, such as Figure 1 , Figure 3 , Figure 6 As shown, the geometry of the cross-section of the through hole 110 is the same as the geometry of the outer contour of the light guide plate 100.
[0053] In this embodiment, reference Figure 1 As shown, the outer contour of the light guide plate 100 is roughly rectangular, and the cross-sectional geometry of the through hole 110 is also roughly rectangular.
[0054] In other embodiments, the light guide plate 100 may also be other shapes, such as circular, triangular, pentagonal, etc. Figure 6 As shown, the light guide plate 100 is pentagonal in shape, and the cross-sectional geometry of the through hole 110 is also pentagonal.
[0055] In the geometric shapes of the outer contour of the light guide plate 100 with corners (e.g., triangles, rectangles, pentagons, etc.), the geometry of the through hole 110 is set to be approximately the same as the geometry of the outer contour of the light guide plate 100. This reduces the abrupt change in shape between the outer contour of the light guide plate 100 and the through hole 110, thereby reducing stress concentration at these locations. This helps to reduce stress concentration caused by opening the through hole 110 on the light guide plate 100 and improves the stability of the light guide plate 100.
[0056] Correspondingly, in the case where the outer contour of the light guide plate 100 is circular, elliptical, or has a rounded transition geometry, the geometry of the through hole 110 is set to be approximately the same as the geometry of the outer contour of the light guide plate 100. This can reduce the abrupt changes in shape caused by the inconsistency between the two shapes, thereby reducing stress concentration at the shape change location. This helps to reduce stress concentration caused by opening the through hole 110 on the light guide plate 100 and improve the stability of the light guide plate 100.
[0057] The above-mentioned settings help to reduce stress concentration caused by opening through holes 110 in the light guide plate 100 and improve the stability of the light guide plate 100. On the other hand, they also make the appearance of the decorative lamp more harmonious and beautiful.
[0058] In one embodiment, such as Figures 3 to 5 As shown, the light guide plate 100 has a light-emitting surface 120 on its front side, and the light-emitting surface 120 has a concave-convex structure.
[0059] The "concave-convex structure" here does not refer to the concave-convex structure of the microstructure. In this embodiment, the concave-convex height of the structure ranges from 1 mm to 10 mm.
[0060] The concave-convex structure of this embodiment is used to generate light refraction and reflection, which can blur the light of the LED bead 300 and expand the illuminated area of the LED bead 300, so that the front of the light guide plate 100 presents visual effects such as light refraction and diffusion, and improves the aesthetics of the decorative light. At the same time, the concave-convex structure can partially disrupt the total internal reflection condition of the light guide plate 100, reduce the total internal reflection inside the light guide plate 100, thereby reducing edge light leakage and further improving the light efficiency of the light guide plate 100.
[0061] In one embodiment, such as Figure 3 , Figure 4 As shown, the concave-convex structure is a light guide rib 130 protruding on the light-emitting surface 120. Multiple light guide ribs 130 are provided and extend in the same direction. Multiple light guide ribs 130 are distributed at intervals on the light-emitting surface 120.
[0062] As light propagates within the light guide plate 100, it is modulated by the surface geometry of each light guide rib 130 it passes through. The inclined or curved surfaces of the light guide ribs 130 force the light to undergo refraction or scattering. This interaction between the light and the light guide ribs 130 releases some light to the light-emitting surface 120 through refraction or scattering, while the remaining light continues to propagate to the next light guide rib 130. Furthermore, since the scattering of light through the light guide ribs 130 is multidirectional, by setting multiple light guide ribs 130 to extend in the same direction, the scattered light can exhibit a regular scattering pattern.
[0063] By using multiple light guide ribs 130 that extend in the same direction and are spaced apart, light can be scattered step by step during its propagation inside the light guide plate 100, thus optimizing the light output effect on the light guide plate 100. At the same time, by adjusting the density and cross-sectional parameters of the light guide ribs 130, the attenuation gradient on the light propagation path can be precisely controlled, making the light output effect on the light guide plate 100 more uniform. Furthermore, by setting multiple light guide ribs 130 to extend in the same direction, the scattered light can exhibit regular scattering, thus optimizing the light output effect of the light guide plate 100.
[0064] In one embodiment, reference Figure 1 , Figure 5 As shown, the concave-convex structure consists of several light-guiding protrusions 140 raised on the light-emitting surface 120, with the light-guiding protrusions 140 spaced apart on the light-emitting surface 120.
[0065] When light propagates inside the light guide plate 100, it is modulated by the surface geometry of each light guide protrusion 140 it passes through. The inclined or curved surface of the light guide protrusion 140 forces the light to be refracted or scattered. The refracted or scattered light propagates in different directions of the light guide protrusion 140, thereby breaking the direction of light propagation and making the light emission on the light emission surface 120 more random.
[0066] The above settings enhance the refraction and scattering of light by the light guide plate 100, which helps to improve the light output effect of the light guide plate 100 and increase the decorative effect of the decorative light.
[0067] In one embodiment, reference Figure 1 , Figure 4 As shown, a reflective layer 150 is provided on the back of the light guide plate 100, which reflects the light from the lamp bead 300 toward the light emitting surface 120.
[0068] The reflective layer 150 can be a metal reflective layer 150 coated on the back of the light guide plate 100, such as aluminum or silver; or it can be a high-reflective material layer, such as a white PET film or a white ink layer.
[0069] By providing a reflective layer 150 on the back of the light guide plate 100, the reflective layer 150 can reflect part of the light emitted by the lamp bead 300 toward the light-emitting surface 120, which helps to improve the light emission effect of the light-emitting surface 120, thereby increasing the aesthetics of the decorative lamp.
[0070] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A decorative lamp, comprising a light guide plate and a plurality of LED beads, characterized in that, The light guide plate has through holes in the thickness direction. The through holes are located in the central area of the light guide plate. The LEDs are installed in the through holes. The sidewalls of the through holes form light-incoming surfaces. The light-emitting side of the LEDs is close to the light-incoming surfaces. The perimeter of the through hole cross-section is smaller than the perimeter of the outer contour of the light guide plate cross-section.
2. A decorative lamp as described in claim 1, characterized in that, The decorative light also includes a filler plate, the outer contour shape of which is adapted to the geometry of the cross-section of the through hole. The filler plate is fitted into the through hole, and the lamp beads are fixed between the light guide plate and the filler plate.
3. A decorative lamp as described in claim 2, characterized in that, The light guide plate and the filler plate are fixedly connected by clips or glue.
4. A decorative lamp as described in claim 1, characterized in that, The area of the through hole cross-section is S1, and the area of the geometric shape enclosed by the outer contour of the light guide plate cross-section is S2, where 1:20≤S1:S2≤1:
4.
5. A decorative lamp as described in claim 1, characterized in that, The geometry of the cross-section of the through hole is the same as the geometry of the outer contour of the light guide plate.
6. A decorative lamp as described in claim 1, characterized in that, The front side of the light guide plate forms a light-emitting surface, and the light-emitting surface is provided with a concave-convex structure.
7. A decorative lamp as described in claim 6, characterized in that, The concave-convex structure is a light-guiding rib protruding on the light-emitting surface. Multiple light-guiding ribs are provided and extend in the same direction. The multiple light-guiding ribs are distributed at intervals on the light-emitting surface.
8. A decorative lamp as described in claim 6, characterized in that, The concave-convex structure consists of a plurality of light-guiding protrusions that protrude from the light-emitting surface, and the plurality of light-guiding protrusions are spaced apart on the light-emitting surface.
9. A decorative lamp as described in claim 6, characterized in that, The back of the light guide plate is provided with a reflective layer, which reflects the light from the LED beads toward the light-emitting surface.