LED lighting structure

Abstract

The utility model discloses an LED (light-emitting diode) lighting structure, which comprises a long strip-shaped shell; the light-transmitting module is connected with the shell, and at least one cavity is formed between the light-transmitting module and the shell; the illumination module is arranged in the cavity, the shell is located on the backlight side of the illumination module, and the light transmitting module is located on the light emitting side of the illumination module; the light guide filling unit is arranged in the cavity in the extending direction of the shell and located between the lighting module and the light transmitting module. The LED lighting structure provided by the utility model not only can improve the optical output and enhance the protection performance, but also can improve the heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially relates to a LED lighting structure. BACKGROUND

[0002] In prior art, air gap exists between lens and lamp bead, which will cause light loss, dust pollution and affect the protection ability of the lamp.

[0003] In addition, a large amount of heat is generated in the working process of LED lamp bead, and the traditional lens structure fails to effectively improve the heat dissipation problem. SUMMARY

[0004] The utility model provides a LED lighting structure, fill material between the light transmission module and the lighting module to make the LED lighting structure provided by the utility model can improve optical output, enhance the protection performance, and, the shell and the light transmission module are connected through the buckle, further simplify the installation process of LED lighting structure, it is more convenient to use under different scenes.

[0005] According to the first aspect of the utility model, a LED lighting structure is provided, which comprises:

[0006] The shell is in the shape of a long strip;

[0007] The light transmission module is connected with the shell, and at least one cavity is formed between the light transmission module and the shell;

[0008] The lighting module is arranged in the cavity, the shell is located at the backlight side of the lighting module, and the light transmission module is located at the light emitting side of the lighting module; and

[0009] The light guide filling unit is arranged in the cavity along the extension direction of the shell and located between the lighting module and the light transmission module.

[0010] Optionally, the refractive index of the light guide filling unit is 1.4-1.55.

[0011] Optionally, the light transmission module comprises a light transmission part and a first clamping part, the shell has a second clamping part, the at least one cavity is formed between the light transmission part and the shell, and the first clamping part is located on both sides of the light transmission part.

[0012] The first clamping part and the second clamping part are detachably connected. Optionally, the light transmission part is made of light transmission material, and the first clamping part is made of non-light transmission material.

[0013] Optionally, the first snap-fit ​​portion is a buckle, the second snap-fit ​​portion is a slot, the lighting module includes a substrate and LED beads arranged on the substrate, the substrate and the housing are fixedly connected; the first snap-fit ​​portion is raised in a direction away from the substrate relative to the extension line of the width direction of the light-transmitting portion.

[0014] Optionally, the cavity is composed of multiple elongated cavities, each of which contains multiple LED beads arranged along its extension direction to form a light strip. Optionally, the inner and outer walls of each cavity are free-form surfaces. Optionally, there are three elongated cavities, wherein the LED beads in the middle cavity are red LED beads, and the LED beads in the two outer cavities are white LED beads. Optionally, the material of the light guide filling unit includes UV-curable adhesive or silicone gel. Optionally, the multiple elongated cavities are interconnected.

[0015] This utility model discloses an LED lighting structure, comprising: a housing, which is elongated; a light-transmitting module connected to the housing, with at least one cavity formed between the light-transmitting module and the housing; an lighting module disposed in the cavity, with the housing located on the backlight side of the lighting module and the light-transmitting module located on the light-emitting side of the lighting module; and a light-guiding filling unit disposed in the cavity along the extension direction of the housing, located between the lighting module and the light-transmitting module. The LED lighting structure provided by this utility model fills the space between the light-transmitting module and the lighting module with material, eliminating gaps between them, preventing dust accumulation and enhancing protective performance. Furthermore, the light-transmitting module can improve optical output and heat dissipation.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0018] Figure 1 This is a cross-sectional view of an LED lighting structure provided in an embodiment of this utility model;

[0019] Figure 2 This is a partial physical image of an LED lighting structure provided in an embodiment of this utility model. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] LED is a semiconductor device that can directly convert electrical energy into light energy and is widely used in lighting and other fields.

[0023] In traditional lighting structures, there is often a gap between the lighting module and the lens. The applicant found that this gap not only affects the aesthetics, but more importantly, it also causes the light emitted by the lighting module to be lost. Dust can more easily enter the gap, causing pollution, which in turn affects the lifespan of the lighting structure and damages its protective capabilities. Moreover, in traditional lighting structures, the lamp beads and the lens are connected by a rubber sealing ring, which makes manufacturing and installation more complicated.

[0024] To address this technical problem in the existing technology, the applicant has creatively provided a lighting structure. Figure 1 This is a cross-sectional view of an LED lighting structure provided in an embodiment of this utility model, for reference. Figure 1The LED lighting structure provided in this embodiment includes: a housing 1 and a light-transmitting module 2. The housing 1 is elongated, and the light-transmitting module 2 is connected to the housing 1. At least one cavity 3 is formed between the light-transmitting module 2 and the housing 1. As shown in the figure, the lighting module 4 is arranged in the cavity 3 along the extending direction of the housing 1. The housing 1 is located on the backlight side of the lighting module 4, and the light-transmitting module 2 is located on the light-emitting side of the lighting module 4. A light-guiding filling unit 5 is arranged in the cavity 3 along the extending direction of the housing 1, located between the lighting module 4 and the light-transmitting module 2.

[0025] Specifically, the LED lighting structure provided in this embodiment of the present invention includes a housing 1, which is an important part of protecting the lighting structure. The material of the housing 1 can be aluminum alloy, copper, and composite materials, etc. The light-transmitting module 2 is connected to the housing 1. The main function of the light-transmitting module 2 is to make the lighting light emitted by the lighting module 4 be emitted evenly. At least one cavity 3 is formed between the light-transmitting module 2 and the housing 1.

[0026] The lighting module 4 is arranged in the cavity 3 along the extending direction of the housing 1. In this embodiment of the present invention, Figure 1 The cross-section of the LED lighting structure is shown, with the extension direction of housing 1 perpendicular to... Figure 1 On the paper's orientation, housing 1 is located on the backlight side of lighting module 4, i.e. Figure 1 The upper side of the light-transmitting module 2 is positioned to better protect the lighting structure, and is located on the light-emitting side of the lighting module 4 to ensure more uniform light emission from the lighting module 4. A light-guiding filling unit 5 is arranged in the cavity 3 along the extending direction of the housing 1, and is located between the lighting module 4 and the light-transmitting module 2. The cavity 3 is exemplarily shown with three units (e.g.,...). Figure 1 As shown in the figure, the present invention does not limit the number of cavities 3, and the number of cavities 3 can be set according to actual needs.

[0027] Preferably, the light-guiding filling unit 5 is filled into all the cavities 3, completely filling the gaps in the cavities 3.

[0028] The LED lighting structure provided in this embodiment of the utility model, by arranging a light guide filling unit between the light-transmitting module and the lighting module, makes the light-transmitting module and the lighting module seamless, preventing dust accumulation and enhancing protection performance. Moreover, the light-transmitting module can improve optical output, making the light emitted from the lighting module softer and more uniform. At the same time, the light guide filling unit can provide better heat dissipation for the lighting module.

[0029] Optionally, the refractive index of the light guide filling unit 5 in the LED lighting structure provided in this embodiment of the present invention is 1.4-1.55.

[0030] Specifically, setting the refractive index of the light guide filling unit 5 to 1.4-1.55 can improve the transmission efficiency of the light emitted from the illumination module 4, reduce the reflection loss of the light through the light transmission module 2, and form a good performance match with the refractive index between adjacent components.

[0031] In one or more embodiments, reference continues to... Figure 1 The light-transmitting module 2 includes a light-transmitting part 21 and a first snap-fit ​​part 22. The housing 1 has a second snap-fit ​​part 11. At least one cavity 3 is formed between the light-transmitting part 21 and the housing 1. The first snap-fit ​​part 22 is located on both sides of the light-transmitting part 21. The first snap-fit ​​part 22 and the second snap-fit ​​part 11 are detachably snap-fitted together. By setting the first snap-fit ​​part 22 and the second snap-fit ​​part 11, it is easy to replace the light-transmitting module 2 and improve the service life of this LED lighting structure.

[0032] Furthermore, in one or more embodiments, the light-transmitting portion 21 is made of a light-transmitting material, and the first latching portion 22 is made of an opaque material. By configuring the light-transmitting portion 21 to be light-transmitting and the first latching portion 22 to be opaque, light will not be scattered through the first latching portion 22, making the illumination emitted by the lighting module 4 more concentrated. At the same time, the first latching portion 22 can cover air bubbles that are easily generated in the housing 1 when filling the light guide filling unit 5. In some specific embodiments, the light-transmitting portion is the part located on the outside of the lighting module that forms the cavity 3, and the remaining areas can be configured as opaque first latching portions 22.

[0033] Optional, continue to refer to Figure 1 The first latching part 22 is a snap-fit, and the second latching part 11 is a slot. The lighting module 4 includes a substrate 41 and LED beads 42, with the LED beads 42 disposed on the substrate 41. The substrate 41 and the housing 1 are fixedly connected. Along the thickness direction of the housing 1, the substrate 41 is located between the housing 1 and the light-transmitting module 2. The first latching part 22 is raised away from the substrate relative to the extension line 21x of the width direction of the light-transmitting part 21. Specifically, as shown in the figure, between the light-transmitting part 21 and the first latching part 22, the light-transmitting module 2 includes a first part A near the LED beads 42 and a second part B away from the LED beads 42. The light-transmitting module 2 is raised away from the substrate 41 from the first part A to the second part B, so that along the thickness direction of the housing 1, the distance between the first part A and the substrate 41 is smaller than the distance between the second part B and the substrate 41.

[0034] Specifically, along the thickness direction of shell 1 (i.e. Figure 1In the "up and down" direction (as indicated in the text), substrate 41 is located between housing 1 and light-transmitting module 2, and substrate 41 is tightly attached to housing 1. The material of substrate 41 can be polymethyl methacrylate (also called acrylic sheet) or polycarbonate. Light-transmitting module 2 includes a first part A near the lamp bead 42 and a second part B away from the lamp bead 42, along the thickness direction of housing 1 (i.e., along the thickness direction of housing 1). Figure 1 In the "up and down" direction (as shown in the image), the distance between the first part A and the substrate 41 is less than the distance between the second part B and the substrate 41. Figure 1 As shown, the line connecting the first part A and the second part B has a certain angle. This setting is to ensure that the light-transmitting module 2 will not be damaged due to the expansion of the internal space after the light-guiding filling unit 5 is filled. In other words, it is a pre-tilt made to fill the light-guiding filling unit 5.

[0035] In this embodiment of the invention, the housing and the light-transmitting module are connected by a snap-fit ​​mechanism. The distance between the first part A and the substrate 41 is set to be smaller than the distance between the second part B and the substrate 41. This not only makes the installation and disassembly of the housing and the light-transmitting module more convenient and quick, but also avoids damage to the light-transmitting module caused by internal space expansion during filling. Furthermore, after the LED lighting structure with the aforementioned pre-deformed light-transmitting module 2 structure is assembled, the light-transmitting module 2 will fit more closely to the substrate 41.

[0036] Figure 2 This is a partial physical drawing of an LED lighting structure provided in an embodiment of this utility model, for reference. Figure 1 and Figure 2 Optionally, the cavity 3 is composed of multiple elongated cavities 31, and multiple LED beads 42 are evenly distributed inside the elongated cavities 31, forming an LED strip 6.

[0037] Specifically, cavity 3 is composed of multiple elongated cavities 31, and multiple LED beads 42 are evenly distributed within each elongated cavity 31. These LED beads 42 form the LED strip 6, such as... Figure 2 As shown, the leftmost column of squares also forms a light strip structure, and the middle part is also a light strip structure. This arrangement makes the light emitted by the LED beads 42 more uniform. Due to the setting of the elongated cavity 31, the heat dissipation performance of the entire lighting structure can also be improved.

[0038] Optionally, the distance between two adjacent light strips 6 is 5 to 15 mm.

[0039] Specifically, the distance between two adjacent light strips 6 can be set to 5-15mm. This setting can further improve the uniformity of emitted light and reduce the generation of stray light.

[0040] Optionally, the material of the light guide filling unit 5 may include UV-curable adhesive or silicone gel.

[0041] Specifically, the material of the light guide filling unit 5 can be ultraviolet curable adhesive or silicone gel. The light guide filling unit 5 is a composite material containing organosilicon. 0.1wt%-0.5wt% of core-shell scattering particles of SiO2 and TiO2 are added to the light guide filling unit 5. The refractive index of the light guide filling unit 5 is 1.4-1.55, the thermal conductivity is greater than or equal to 0.5W / (m·K), and the coefficient of thermal expansion is less than or equal to 80ppm / ℃.

[0042] Optionally, the light-transmitting portion 21 corresponding to the light-emitting side of each cavity 3 is in the shape of a free curve. That is, in the cross-section shown in the figure, the inner wall 301 and the outer wall 302 of the light-transmitting portion 21 corresponding to the light-emitting side of each elongated cavity 31 are both free curves.

[0043] Specifically, through the above configuration, instead of the traditional regular surface, it is possible to achieve precise control of the light emitted by the lighting module 4, improve heat dissipation efficiency, further increase the effective illumination range and light utilization rate, and enhance the aesthetics of the lighting structure.

[0044] Optionally, the housing includes a heat sink, which is provided with multiple heat dissipation fins 7; the multiple heat dissipation fins 7 are spaced apart; and the end of the heat sink is provided with mounting holes.

[0045] Specifically, the housing 1 in the lighting structure provided in this embodiment can be a heat sink, so that the housing 1 can better dissipate heat for the lighting module 4 while protecting the lighting structure from damage caused by external forces. In order to improve the heat dissipation performance of the lighting structure, the heat sink is provided with multiple heat dissipation fins 7; and the multiple heat dissipation fins 7 are arranged in sequence at intervals, so as to further improve the heat dissipation performance of the lighting structure.

[0046] In one or more embodiments, reference continues to... Figure 2 There are three elongated cavities 31. The middle elongated cavity contains red LEDs 4201, while the cavities on both sides contain white LEDs 4202. The red LEDs 4201 have a peak wavelength range of 620-760 nanometers (nm), and the white LEDs 4202 have a color temperature range of 2700K-6500K. By placing white LEDs 4202 on both sides of the LED strip composed of red LEDs 4201, the light spectrum between 620-760 nanometers (nm) can be supplemented, making the fixed light more suitable for plant growth.

[0047] In one or more embodiments, the LED lighting structure is a plant lighting lamp.

[0048] In one or more embodiments, a plant lighting system is also provided, wherein the plant lighting system employs an LED lighting structure as described in the preceding one or more embodiments. In one or more embodiments, the plurality of elongated cavities are interconnected. In another embodiment, the plurality of elongated cavities are not interconnected.

[0049] In addition, continue to refer to Figure 1 The LED lighting structure described in one or more of the preceding embodiments is fabricated using the following LED lighting structure fabrication process:

[0050] First, the lighting module 4 is fixed to the housing 1. Specifically, the substrate 41 of the lighting module 4 is fixed to the housing 1 using adhesive, and then cured by baking at high temperature.

[0051] Subsequently, the light-transmitting module 2 is fixed to the housing 1. Specifically, after the clip 22 of the light-transmitting module 2 is engaged with the slot 11 in the housing 1, the light-transmitting module 2 is fixedly connected to the housing 1 by adhesive. After fixing, a cavity 3 is formed between the light-transmitting module 2 and the housing 1.

[0052] Subsequently, the liquid light-guiding filling unit 5 is injected into the cavity 3 from one end. Specifically, a dispensing machine is used for the injection.

[0053] Subsequently, the liquid level of the light-guiding filling unit 5 within the cavity 3 is observed until completion. Specifically, the liquid level of the light-guiding filling unit 5 within the cavity 3 can be observed visually or by ultrasonic testing.

[0054] Finally, after plugging the injection hole with a plug, let it stand at room temperature or with added heat until the light guide filling unit 5 is cured.

[0055] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An LED lighting structure, characterized in that, include: The shell is long and narrow; A light-transmitting module is connected to the housing, and at least one cavity is formed between the light-transmitting module and the housing; An illumination module is disposed within the cavity, the housing is located on the backlight side of the illumination module, and the light-transmitting module is located on the light-emitting side of the illumination module; and A light-guiding filling unit is arranged in the cavity along the extension direction of the housing, located between the lighting module and the light-transmitting module.

2. The LED lighting structure according to claim 1, characterized in that, The refractive index of the light guide filling unit is 1.4 to 1.

55.

3. The LED lighting structure according to claim 1, characterized in that, The light-transmitting module includes a light-transmitting part and a first snap-fit ​​part, the housing has a second snap-fit ​​part, the at least one cavity is formed between the light-transmitting part and the housing, and the first snap-fit ​​part is located on both sides of the light-transmitting part; The first snap-fit ​​portion and the second snap-fit ​​portion are detachably snap-fitted together.

4. The LED lighting structure according to claim 3, characterized in that, The light-transmitting part is made of a light-transmitting material, while the first snap-fit ​​part is made of an opaque material.

5. The LED lighting structure according to claim 3, characterized in that, The first snap-fit ​​part is a buckle, the second snap-fit ​​part is a slot, the lighting module includes a substrate and LED beads arranged on the substrate, and the substrate and the housing are fixedly connected. The first snap-fit ​​portion is raised in a direction away from the substrate relative to the extension line of the width direction of the light-transmitting portion.

6. The LED lighting structure according to claim 3, characterized in that, The cavity is composed of multiple elongated cavities, and each elongated cavity contains multiple LED beads arranged along the extension direction of the elongated cavity to form a light strip.

7. The LED lighting structure according to claim 6, characterized in that, The light-transmitting portion corresponding to the light-emitting side of each of the elongated cavities is in a free-curve shape.

8. The LED lighting structure according to claim 6, characterized in that, There are three elongated cavities. The LED beads arranged in the middle elongated cavity are red LED beads, and the LED beads arranged in the elongated cavities on both sides are white LED beads.

9. The LED lighting structure according to claim 1, characterized in that, The material of the light guide filling unit includes ultraviolet-curable adhesive or silicone gel.

10. The LED lighting structure according to claim 6, characterized in that, The multiple elongated cavities are interconnected.

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